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Jonathan D. Morales</title> <meta name="description" content="Search results for: M. Jonathan D. Morales"> <meta name="keywords" content="M. Jonathan D. Morales"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="M. 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Jonathan D. Morales"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 223</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: M. Jonathan D. Morales</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">133</span> Synthesis and Gas Transport Properties of Polynorbornene Dicarboximides Bearing Trifluoromethyl Isomer Moieties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jorge%20A.%20Cruz-Morales">Jorge A. Cruz-Morales</a>, <a href="https://publications.waset.org/abstracts/search?q=Joel%20Vargas"> Joel Vargas</a>, <a href="https://publications.waset.org/abstracts/search?q=Arlette%20A.%20Santiago"> Arlette A. Santiago</a>, <a href="https://publications.waset.org/abstracts/search?q=Mikhail%20A.%20Tlenkopatchev"> Mikhail A. Tlenkopatchev</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In industrial processes such as oil extraction and refining, products are handled or generated in the gas phase, which represents a challenge in terms of treatment and purification. During the past three decades, new scientific findings and technological advances in separation based on the use of membranes have led to simpler and more efficient gas separation processes, optimizing the use of energy and generating less pollution. This work reports the synthesis and ring-opening metathesis polymerization (ROMP) of new structural isomers based on norbornene dicarboximides bearing trifluoromethyl moieties, specifically N-2-trifluoromethylphenyl-exo,endo-norbornene-5,6-dicarboximide (2a) and N-3-trifluoromethylphenyl-exo,endo-norbornene-5,6-dicarboximide (2b), using tricyclohexylphosphine [1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene][benzylidene] ruthenium dichloride (I), bis(tricyclohexylphosphine) benzylidene ruthenium (IV) dichloride (II), and bis(tricyclohexylphosphine) p-fluorophenylvinylidene ruthenium (II) dichloride (III). It was observed that the -CF3 moiety attached at the ortho position of the aromatic ring increases thermal and mechanical properties of the polymer, whereas meta substitution has the opposite effect. A comparative study of gas transportation in membranes, based on these fluorinated polynorbornenes, showed that -CF3 ortho substitution increases permeability of the polymer membrane as a consequence of the increase in both gas solubility and gas diffusion. In contrast, gas permeability coefficients of the meta-substituted polymer membrane are rather similar to those of that which is non-fluorinated; this can be attributed to a lower fractional free volume. The meta-substituted polymer membrane, besides showing the largest permselectivity coefficients of all the isomers studied here, was also found to have one of the largest permselectivity coefficients for separating H2/C3H6 into glassy polynorbornene dicarboximides. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20transport%20membranes" title="gas transport membranes">gas transport membranes</a>, <a href="https://publications.waset.org/abstracts/search?q=polynorbornene%20dicarboximide" title=" polynorbornene dicarboximide"> polynorbornene dicarboximide</a>, <a href="https://publications.waset.org/abstracts/search?q=ROMP" title=" ROMP"> ROMP</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20isomers" title=" structural isomers"> structural isomers</a> </p> <a href="https://publications.waset.org/abstracts/44054/synthesis-and-gas-transport-properties-of-polynorbornene-dicarboximides-bearing-trifluoromethyl-isomer-moieties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44054.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">255</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">132</span> Development and Implementation of a Business Technology Program Based on Techniques for Reusing Water in a Colombian Company</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Miguel%20A.%20Jimenez%20Barros">Miguel A. Jimenez Barros</a>, <a href="https://publications.waset.org/abstracts/search?q=Elyn%20L.%20Solano%20Charris"> Elyn L. Solano Charris</a>, <a href="https://publications.waset.org/abstracts/search?q=Luis%20E.%20Ramirez"> Luis E. Ramirez</a>, <a href="https://publications.waset.org/abstracts/search?q=Lauren%20Castro%20Bolano"> Lauren Castro Bolano</a>, <a href="https://publications.waset.org/abstracts/search?q=Carlos%20Torres%20Barreto"> Carlos Torres Barreto</a>, <a href="https://publications.waset.org/abstracts/search?q=Juliana%20Morales%20Cubillo"> Juliana Morales Cubillo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This project sought to mitigate the high levels of water consumption in industrial processes in accordance with the water-rationing plan promoted at national and international level due to the water consumption projections published by the United Nations. Water consumption has three main uses, municipal (common use), agricultural and industrial where the latter consumes a minimum percentage (around 20% of the total consumption). Awareness on world water scarcity, a Colombian company responsible for generation of massive consumption products, decided to implement politics and techniques for water treatment, recycling, and reuse. The project consisted in a business technology program that permits a better use of wastewater caused by production operations. This approach reduces the potable water consumption, generates better conditions of water in the sewage dumps, generates a positive environmental impact for the region, and is a reference model in national and international levels. In order to achieve the objective, a process flow diagram was used in order to define the industrial processes that required potable water. This strategy allowed the industry to determine a water reuse plan at the operational level without affecting the requirements associated with the manufacturing process and even more, to support the activities developed in administrative buildings. Afterwards, the company made an evaluation and selection of the chemical and biological processes required for water reuse, in compliance with the Colombian Law. The implementation of the business technology program optimized the water use and recirculation rate up to 70%, accomplishing an important reduction of the regional environmental impact. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-reactor" title="bio-reactor">bio-reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=potable%20water" title=" potable water"> potable water</a>, <a href="https://publications.waset.org/abstracts/search?q=reverse%20osmosis" title=" reverse osmosis"> reverse osmosis</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20treatment" title=" water treatment"> water treatment</a> </p> <a href="https://publications.waset.org/abstracts/69256/development-and-implementation-of-a-business-technology-program-based-on-techniques-for-reusing-water-in-a-colombian-company" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69256.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">235</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">131</span> Thermal Performance of Fully Immersed Server into Saturated Fluid Porous Medium</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yaser%20Al-Anii">Yaser Al-Anii</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulmajeed%20Almaneea"> Abdulmajeed Almaneea</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20L.%20Summers"> Jonathan L. Summers</a>, <a href="https://publications.waset.org/abstracts/search?q=Harvey%20M.%20Thompson"> Harvey M. Thompson</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikil%20Kapur"> Nikil Kapur</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The natural convection cooling system of a fully immersed server in dielectric liquid is studied numerically. In present case study, the dielectric liquid represents working fluid and it is in contact with server inside capsule. The capsule includes electronic component and fluid, which can be modelled as saturated porous media. This medium follow Darcy flow regime and assumed to be in balance between its components. The study focus is on role of spatial parameters on thermal behavior of convective heat transfer. Based on server known unit, which is 1U, two parameters Ly and S are changed to test their effect. Meanwhile, wide range of modified Rayleigh number, which is 0.5 to 300, are covered to better understand thermal performance. Navier-Stokes equations are used to model physical domain. Furthermore, successive over relaxation and time marching techniques are used to solve momentum and energy equation. From obtained correlation, the in-between distance S is more effective on Nusselt number than distance to edge Ly by approximately 14%. In addition, as S increase, the average Nusselt number of the upper unit is increased sharply, whereas the lower one keeps on same level. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=convective%20cooling%20of%20server" title="convective cooling of server">convective cooling of server</a>, <a href="https://publications.waset.org/abstracts/search?q=darcy%20flow" title=" darcy flow"> darcy flow</a>, <a href="https://publications.waset.org/abstracts/search?q=liquid-immersed%20server" title=" liquid-immersed server"> liquid-immersed server</a>, <a href="https://publications.waset.org/abstracts/search?q=porous%20media" title=" porous media"> porous media</a> </p> <a href="https://publications.waset.org/abstracts/24864/thermal-performance-of-fully-immersed-server-into-saturated-fluid-porous-medium" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24864.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">397</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">130</span> Truancy Trends in the Pacific: Exploring Truancy from Students’ Perspectives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20W.%20Shute">Jonathan W. Shute</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Truancy – unexcused absences from school and class – continues to challenge educators throughout the world, including in Oceania. Traditionally, the focus of attendance issues has been on students, parents, and social factors. While these factors obviously contribute to truancy, research suggests that most truants are rational decision-makers who claim to be bored and intellectually unfulfilled, choosing to avoid specific classes and teachers. For this study, 2,536 Junior and senior high school students were surveyed from six high schools in the following island nations: Tonga, Samoa, Kiribati, and Fiji. From these data, patterns and characteristics emerged which seem to influence truancy from the truant’s perspective, and which may enlighten teachers in their practice. For lasting solutions to an age-old challenge, the 21st century educational community should consider sharing the responsibility for truancy by focusing on pedagogy practices as a possible explanation for truancy. Specific ideas are suggested to inform teacher effectiveness and therefore keep our students in school and class. This research does not focus on the effectiveness of Teacher Education Programs from which teachers arrive in their careers or the potential cultural, linguistic, and political trends and policies that may or may not influence truancy. While these are critical topics to be researched, this research focuses on students’ opinions and perspectives of why they choose to truant from entire days of school or from specific classes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=truancy" title="truancy">truancy</a>, <a href="https://publications.waset.org/abstracts/search?q=student%20engagement" title=" student engagement"> student engagement</a>, <a href="https://publications.waset.org/abstracts/search?q=effective%20pedagogy" title=" effective pedagogy"> effective pedagogy</a>, <a href="https://publications.waset.org/abstracts/search?q=student%20perspectives" title=" student perspectives"> student perspectives</a> </p> <a href="https://publications.waset.org/abstracts/192120/truancy-trends-in-the-pacific-exploring-truancy-from-students-perspectives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192120.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">22</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">129</span> Companies’ Internationalization: Multi-Criteria-Based Prioritization Using Fuzzy Logic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Anibal%20Restrepo%20Morales">Jorge Anibal Restrepo Morales</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonia%20Mart%C3%ADn%20G%C3%B3mez"> Sonia Martín Gómez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A model based on a logical framework was developed to quantify SMEs' internationalization capacity. To do so, linguistic variables, such as human talent, infrastructure, innovation strategies, FTAs, marketing strategies, finance, etc. were integrated. It is argued that a company’s management of international markets depends on internal factors, especially capabilities and resources available. This study considers internal factors as the biggest business challenge because they force companies to develop an adequate set of capabilities. At this stage, importance and strategic relevance have to be defined in order to build competitive advantages. A fuzzy inference system is proposed to model the resources, skills, and capabilities that determine the success of internationalization. Data: 157 linguistic variables were used. These variables were defined by international trade entrepreneurs, experts, consultants, and researchers. Using expert judgment, the variables were condensed into18 factors that explain SMEs’ export capacity. The proposed model is applied by means of a case study of the textile and clothing cluster in Medellin, Colombia. In the model implementation, a general index of 28.2 was obtained for internationalization capabilities. The result confirms that the sector’s current capabilities and resources are not sufficient for a successful integration into the international market. The model specifies the factors and variables, which need to be worked on in order to improve export capability. In the case of textile companies, the lack of a continuous recording of information stands out. Likewise, there are very few studies directed towards developing long-term plans, and., there is little consistency in exports criteria. This method emerges as an innovative management tool linked to internal organizational spheres and their different abilities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=business%20strategy" title="business strategy">business strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=exports" title=" exports"> exports</a>, <a href="https://publications.waset.org/abstracts/search?q=internationalization" title=" internationalization"> internationalization</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20set%20methods" title=" fuzzy set methods "> fuzzy set methods </a> </p> <a href="https://publications.waset.org/abstracts/38137/companies-internationalization-multi-criteria-based-prioritization-using-fuzzy-logic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38137.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">128</span> Out of Pocket Costs for Patients with Tuberculosis in Colombia: Evidence from Three Metropolitan Areas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jose%20Hernandez">Jose Hernandez</a>, <a href="https://publications.waset.org/abstracts/search?q=Lina%20Mart%C3%ADnez"> Lina Martínez</a>, <a href="https://publications.waset.org/abstracts/search?q=Gustavo%20Gonzalez"> Gustavo Gonzalez</a>, <a href="https://publications.waset.org/abstracts/search?q=Carlos%20L%C3%A1zaro"> Carlos Lázaro</a>, <a href="https://publications.waset.org/abstracts/search?q=Diana%20Castrillon"> Diana Castrillon</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Cardona"> Jonathan Cardona</a>, <a href="https://publications.waset.org/abstracts/search?q=Laura%20Mej%C3%ADa"> Laura Mejía</a>, <a href="https://publications.waset.org/abstracts/search?q=Yina%20Sanchez"> Yina Sanchez</a>, <a href="https://publications.waset.org/abstracts/search?q=Luisa%20Ochoa"> Luisa Ochoa</a>, <a href="https://publications.waset.org/abstracts/search?q=Evert%20Jimenez"> Evert Jimenez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives: Economic analyses of tuberculosis control interventions are usually focused on the payer’s perspective. To assess the overall economic impact of the disease, out-of-pocket and indirect costs are also required. This research is aimed to estimate overall economic impact under DOTS-strategy (Directly Observed Therapy Short Course). Methods: A cross-sectional survey of 91 adult tuberculosis patients in treatment for at least two months was conducted from the society perspective. A standardized questionnaire was used in three different cities of Colombia: Medellin (poverty is 17.7%), Monteria (poverty is 36.9%) and Quibdó (poverty is 51.2%). Costs were converted to 2013 USD and categorized into two periods: diagnostics phase and treatment. Results: The median cost during diagnostics was 13$ (±SD 9.5). The median monthly patient out-of-pocket costs during treatment were 32$ (±SD 6.8), equivalent to 17% of patient’s median monthly income, estimated in 186$ (±SD 23). Costs recorded in Medellin were 47$ in Monteria was 18$ and in Quibdó was 13$. Conclusion: Patient costs under DOTS strategy are high even when services are provided free of charge. The creation or strengthening of community-based treatment supervisors could greatly impact costs of tuberculosis and lower drop-outs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tuberculosis" title="tuberculosis">tuberculosis</a>, <a href="https://publications.waset.org/abstracts/search?q=costs%20and%20cost%20analysis" title=" costs and cost analysis"> costs and cost analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20promotion" title=" health promotion"> health promotion</a>, <a href="https://publications.waset.org/abstracts/search?q=Colombia" title=" Colombia"> Colombia</a> </p> <a href="https://publications.waset.org/abstracts/5825/out-of-pocket-costs-for-patients-with-tuberculosis-in-colombia-evidence-from-three-metropolitan-areas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5825.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">367</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">127</span> Educating Empathy: Combining Active Listening and Moral Discovery to Facilitate Prosocial Connection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Erika%20Price">Erika Price</a>, <a href="https://publications.waset.org/abstracts/search?q=Lisa%20Johnson"> Lisa Johnson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cognitive and dispositional empathy is decreasing among students worldwide, particularly those at university. This paper looks at the effects of encouraging empathetic positioning in divisive topics by teaching listening skills and moral discovery to university students. Two groups of university students were given the assignment to interview individuals they disagreed with on social issues (e.g. abortion, gun control, legalization of drugs, involvement in Ukraine, etc.). One group completed the assignment with no other instruction. The second group completed the assignment after receiving instruction in active listening and Jonathan Haidt’s theory of moral foundations in politics. Results show that when students are given both active listening techniques and awareness of moral foundations, they are significantly more likely to have socially positive interactions with those they disagree with on issues as compared to those who listen passively to ideological opponents. As students interacted with those they disagreed with, they evidenced prosocial behaviors of acknowledgement, validation, and even commonalities with their opponents’ viewpoints, signifying a heartening trend of empathetic connection that is waning in students. The research suggests that empathy is a skill that can be nurtured by active listening but that it is more fully cultivated when paired with the concept of moral foundations underpinning political ideologies. These findings shed light on how to create more effective pedagogies for social and emotional learning, as well as inclusion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=empathy" title="empathy">empathy</a>, <a href="https://publications.waset.org/abstracts/search?q=listening%20skills" title=" listening skills"> listening skills</a>, <a href="https://publications.waset.org/abstracts/search?q=moral%20discovery" title=" moral discovery"> moral discovery</a>, <a href="https://publications.waset.org/abstracts/search?q=pedagogy" title=" pedagogy"> pedagogy</a>, <a href="https://publications.waset.org/abstracts/search?q=prosocial%20behavior" title=" prosocial behavior"> prosocial behavior</a> </p> <a href="https://publications.waset.org/abstracts/173825/educating-empathy-combining-active-listening-and-moral-discovery-to-facilitate-prosocial-connection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173825.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">68</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">126</span> Preparation of Activated Carbon Fibers (ACF) Impregnated with Ionic Silver Particles from Cotton Woven Waste and Its Performance as Antibacterial Agent</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Andres%20Pullas%20Navarrete">Jonathan Andres Pullas Navarrete</a>, <a href="https://publications.waset.org/abstracts/search?q=Ernesto%20Hale%20de%20la%20Torre%20Chauvin"> Ernesto Hale de la Torre Chauvin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, the antibacterial effect of activated carbon fibers (ACF) impregnated with ionic silver particles was studied. ACF were prepared from samples of cotton woven wastes (cotton based fabrics 5x10 cm) by applying a chemical activation procedure with H3PO4. This treatment was performed using several H3PO4: Cotton based fabrics weight ratios (1:2–2:1), temperatures (600–900 ºC) and activation times (0.5–2 h). The ACF obtained under the best activation conditions showed BET surface area of 1103 m2/g; this result along with iodine index demonstrated the microporous nature of the fibers herein obtained. Then, the obtained fibers were impregnated with ionic silver particles by immersion in 0.1 and 0.5 M AgNO3 solutions followed by drying and thermal decomposition in order to fix the silver particles in the structure of ACF. It was determined that the presence of Ag ions lowered the BET surface area of the ACF in approximately 17 % due to the obstruction of the porosities along the carbonized structure. Finally, the antibacterial effect of the ACF impregnated with silver was studied through direct counting method for coliforms. The antibacterial activity of the impregnated fibers was demonstrated, and it was attributed to the strongly inhibition of bacteria growth because of chemical properties of the particles of silver inside the ACF. This behavior was demonstrated at concentrations of silver as low as 0.035 % w/w. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=activated%20carbon" title="activated carbon">activated carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=adsorption" title=" adsorption"> adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=antibacterial%20activity" title=" antibacterial activity"> antibacterial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=coliforms" title=" coliforms"> coliforms</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20area" title=" surface area"> surface area</a> </p> <a href="https://publications.waset.org/abstracts/58753/preparation-of-activated-carbon-fibers-acf-impregnated-with-ionic-silver-particles-from-cotton-woven-waste-and-its-performance-as-antibacterial-agent" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58753.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">282</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">125</span> Leveraging on Youth Agricultural Extension Outreach: Revisiting Young Farmer’s Club in Schools in Edo State, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christopher%20A.%20Igene">Christopher A. Igene</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20O.%20Ighodalo"> Jonathan O. Ighodalo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Youths play a critical role in the agricultural transformation of any developing nation such as Nigeria. Hence, the preparation of any nation for productive life depends on the policies and programmes designed for its youths. Studies have shown that children and youths contribute significantly in agricultural activities. Youths have vigour and prone to physical work, they constitute a great percentage of labour force in the country. It is of necessity that every policy on national development must of necessity take cognizance of the youths. Hence, the focus on youths in agricultural extension outreaches most especially, the young farmers club. It is an out-of-school education in agriculture and home economics for rural youth through learning by doing. Young farmers club in schools enables the young to learn and acquire those attributes that will enable them grown into useful and mature adult. There appears to be numerous constrains in the use of youths in extension, they are inadequate personnel, poor funding of agricultural sector, poor marketing channels, lack of good roads, others are poor input and lack of information. However, there is a need for Agricultural Development Programme (ADP) to organize workshop for secondary students and agricultural science teachers, schools to organize seminars and workshops for secondary schools who are members of Young Farmers Club (YFC). ADP should also organize agricultural show to encourage students to be members of Young Farmers Club (YFC). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=agricultural%20extension" title="agricultural extension">agricultural extension</a>, <a href="https://publications.waset.org/abstracts/search?q=agricultural%20role" title=" agricultural role"> agricultural role</a>, <a href="https://publications.waset.org/abstracts/search?q=students" title=" students"> students</a>, <a href="https://publications.waset.org/abstracts/search?q=youths" title=" youths"> youths</a>, <a href="https://publications.waset.org/abstracts/search?q=young%20farmers%20club%20%28YFC%29" title=" young farmers club (YFC)"> young farmers club (YFC)</a> </p> <a href="https://publications.waset.org/abstracts/121467/leveraging-on-youth-agricultural-extension-outreach-revisiting-young-farmers-club-in-schools-in-edo-state-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/121467.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">164</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">124</span> Multi-Atlas Segmentation Based on Dynamic Energy Model: Application to Brain MR Images</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jie%20Huo">Jie Huo</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Wu"> Jonathan Wu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Segmentation of anatomical structures in medical images is essential for scientific inquiry into the complex relationships between biological structure and clinical diagnosis, treatment and assessment. As a method of incorporating the prior knowledge and the anatomical structure similarity between a target image and atlases, multi-atlas segmentation has been successfully applied in segmenting a variety of medical images, including the brain, cardiac, and abdominal images. The basic idea of multi-atlas segmentation is to transfer the labels in atlases to the coordinate of the target image by matching the target patch to the atlas patch in the neighborhood. However, this technique is limited by the pairwise registration between target image and atlases. In this paper, a novel multi-atlas segmentation approach is proposed by introducing a dynamic energy model. First, the target is mapped to each atlas image by minimizing the dynamic energy function, then the segmentation of target image is generated by weighted fusion based on the energy. The method is tested on MICCAI 2012 Multi-Atlas Labeling Challenge dataset which includes 20 target images and 15 atlases images. The paper also analyzes the influence of different parameters of the dynamic energy model on the segmentation accuracy and measures the dice coefficient by using different feature terms with the energy model. The highest mean dice coefficient obtained with the proposed method is 0.861, which is competitive compared with the recently published method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brain%20MRI%20segmentation" title="brain MRI segmentation">brain MRI segmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20energy%20model" title=" dynamic energy model"> dynamic energy model</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-atlas%20segmentation" title=" multi-atlas segmentation"> multi-atlas segmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20minimization" title=" energy minimization"> energy minimization</a> </p> <a href="https://publications.waset.org/abstracts/68716/multi-atlas-segmentation-based-on-dynamic-energy-model-application-to-brain-mr-images" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68716.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">336</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">123</span> An Evaluation Framework for Virtual Reality Learning Environments in Sports Education</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20J.%20Foo">Jonathan J. Foo</a>, <a href="https://publications.waset.org/abstracts/search?q=Keng%20Hao%20Chew"> Keng Hao Chew</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Interest in virtual reality (VR) technologies as virtual learning environments have been on the rise in recent years. With thanks to the aggressively competitive consumer electronics environment, VR technology has been made affordable and accessible to the average person with developments like Google Cardboard and Oculus Go. While the promise of virtual access to unique virtual learning environments with the benefits of experiential learning sounds extremely attractive, there are still concerns over user comfort in the psychomotor, cognitive, and affective domains. Reports of motion sickness and short durations create doubt and have stunted its growth. In this paper, a multidimensional framework is proposed for the evaluation of VR learning environments within the three dimensions: tactual quality, didactic quality, and autodidactic quality. This paper further proposes a mixed-methods experimental research plan that sets out to evaluate a virtual reality training simulator in the context of amateur sports fencing. The study will investigate if an immersive VR learning environment can effectively simulate an authentic learning environment suitable for instruction, practice, and assessment while providing the user comfort in the tactual, didactic, and autodidactic dimensions. The models and recommendations developed for this study are designed in the context of fencing, but the potential impact is a guide for the future design and evaluation of all VR developments across sports and technical classroom education. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=autodidactic%20quality" title="autodidactic quality">autodidactic quality</a>, <a href="https://publications.waset.org/abstracts/search?q=didactic%20quality" title=" didactic quality"> didactic quality</a>, <a href="https://publications.waset.org/abstracts/search?q=tactual%20quality" title=" tactual quality"> tactual quality</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20reality" title=" virtual reality"> virtual reality</a> </p> <a href="https://publications.waset.org/abstracts/120719/an-evaluation-framework-for-virtual-reality-learning-environments-in-sports-education" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120719.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">135</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">122</span> An Empirical Study of the Moderation Effects of Commitment, Trust, and Relationship Value in the Relation of Goods and Services Related to Business to Business Brand Images on Customer Loyalty</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Luis%20Morales%20Romero">Jorge Luis Morales Romero</a>, <a href="https://publications.waset.org/abstracts/search?q=Enrique%20Murillo%20Oth%C3%B3n"> Enrique Murillo Othón</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Business to business (B2B) relationships generally go beyond a purely profit-based result, with firms seeking to maintain a relationship for many years because a breakup or getting a new supplier can be very costly. Therefore, identifying the factors which determine a successful relationship in the long term is of great interest to companies. That is why their reputation and the brand image that customers have of them are among the main factors that can achieve a successful relationship; Because of the positive effect which is driven by the client’s loyalty. Additionally, the perception that a customer may have about a brand is different when it is related to goods or to services. Thereby, they create in their minds their own brand image of it based on the past experiences they have had; Thus, a positive relationship is established between goods-related brand image, service-related brand image, and customer loyalty. The present investigation examines the boundary conditions of said relationship by testing the moderating effects of trust, commitment, and relationship value in a B2B environment. All the variables were tested independently as moderators for service-related brand image/loyalty and for goods-related brand image/loyalty, as they are assumed to be separate variables. Survey data was collected through interviews with customers that have both a product-buying relationship and a service relationship with a global B2B brand of healthcare equipment operating in the Mexican healthcare market. Interviewed respondents were either the user or the purchasing manager and/or the responsible for the equipment maintenance for the customer organization. Hence, they were appropriate informants regarding the B2B relationship with this healthcare brand. The moderation models were estimated using the PROCESS macro for the Statistical Package for the Social Sciences Software (SPSS). Results show statistical evidence that both Relationship Value and Trust are significant moderators for the service-related brand image/loyalty relation but not significant for the goods-related brand/loyalty relation. On the other hand, Commitment results in a significant moderator for the goods-related brand/loyalty relation but is not significant for the service-related brand image/loyalty relation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=commitment" title="commitment">commitment</a>, <a href="https://publications.waset.org/abstracts/search?q=trust" title=" trust"> trust</a>, <a href="https://publications.waset.org/abstracts/search?q=relationship%20value" title=" relationship value"> relationship value</a>, <a href="https://publications.waset.org/abstracts/search?q=loyalty" title=" loyalty"> loyalty</a>, <a href="https://publications.waset.org/abstracts/search?q=B2B" title=" B2B"> B2B</a>, <a href="https://publications.waset.org/abstracts/search?q=moderator" title=" moderator"> moderator</a> </p> <a href="https://publications.waset.org/abstracts/162723/an-empirical-study-of-the-moderation-effects-of-commitment-trust-and-relationship-value-in-the-relation-of-goods-and-services-related-to-business-to-business-brand-images-on-customer-loyalty" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162723.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">93</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">121</span> Ab Initio Approach to Generate a Binary Bulk Metallic Glass Foam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Galvan-Colin">Jonathan Galvan-Colin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ariel%20Valladares"> Ariel Valladares</a>, <a href="https://publications.waset.org/abstracts/search?q=Renela%20Valladares"> Renela Valladares</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Valladares"> Alexander Valladares</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Both porous materials and bulk metallic glasses have been studied due to their potential applications and their exceptional physical and chemical properties. However, each material presents certain drawbacks which have been thought to be overcome by generating bulk metallic glass foams (BMGF). Although some experimental reports have been performed on multicomponent BMGF, still no ab initio works have been published, as far as we know. We present an approach based on the expanding lattice (EL) method to generate binary amorphous nanoporous Cu64Zr36. Starting from two different configurations: a 108-atom crystalline cubic supercell (cCu64Zr36) and a 108-atom amorphous supercell (aCu64Zr36), both with an initial density of 8.06 g/cm3, we applied EL method to halve the density and to get 50% of porosity. After the lattice expansion the supercells were subject to ab initio molecular dynamics for 500 steps at constant room temperature. Then, the samples were geometry-optimized and characterized with the pair and radial distribution functions, bond-angle distributions and a coordination number analysis. We found that pores appeared along specific spatial directions different from one to another and that they differed in size and form as well, which we think is related to the initial structure. Due to the lack of experimental counterparts our results should be considered predictive and further studies are needed in order to handle a larger number of atoms and its implication on pore topology. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ab%20initio%20molecular%20dynamics" title="ab initio molecular dynamics">ab initio molecular dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=bulk%20mettalic%20glass" title=" bulk mettalic glass"> bulk mettalic glass</a>, <a href="https://publications.waset.org/abstracts/search?q=porous%20alloy" title=" porous alloy"> porous alloy</a> </p> <a href="https://publications.waset.org/abstracts/4111/ab-initio-approach-to-generate-a-binary-bulk-metallic-glass-foam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4111.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">263</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">120</span> Non-Family Members as Successors of Choice in South African Family Businesses </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Marks">Jonathan Marks</a>, <a href="https://publications.waset.org/abstracts/search?q=Lauren%20Katz"> Lauren Katz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Family firms are a vital component of a country’s stability, prosperity and development. Their sustainability, longevity and continuity are critical. Given the premise that family firms wish to continue the business for the benefit of the family, the family founder / owner is faced with an emotionally charged transition option; either to transfer the family business to a family member or to transfer the firm to a non-family member. The rationale employed by family founders to select non-family members as successors/ executives of choice and the concomitant rationale employed by non-family members to select family firms as employers of choice, has been under-researched in the literature of family business succession planning. This qualitative study used semi-structured interviews to gain access to family firm founders/ owners, non-family successors/ executives and industry experts on family business. The findings indicated that the rationale for family members to select non-family successors/ executives was underpinned by the objective to grow the family firm for the benefit of the family. If non-family members were the most suitable candidates to ensure this outcome, family members were comfortable to employ non-family members. Non- family members, despite the knowledge that benefit lay primarily with family members, chose to work for family firms for personal benefits in terms of wealth, security and close connections. A commonly shared value system was a pre-requisite for all respondents. The research study provides insights from family founders/ owners, non-family successors/ executives, and industry experts on the subject of succession planning outside the family structure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=agency%20theory" title="agency theory">agency theory</a>, <a href="https://publications.waset.org/abstracts/search?q=family%20business" title=" family business"> family business</a>, <a href="https://publications.waset.org/abstracts/search?q=institutional%20logics" title=" institutional logics"> institutional logics</a>, <a href="https://publications.waset.org/abstracts/search?q=non-family%20successors" title=" non-family successors"> non-family successors</a>, <a href="https://publications.waset.org/abstracts/search?q=Stewardship%20Theory" title=" Stewardship Theory "> Stewardship Theory </a> </p> <a href="https://publications.waset.org/abstracts/62919/non-family-members-as-successors-of-choice-in-south-african-family-businesses" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62919.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">368</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">119</span> Music Training as an Innovative Approach to the Treatment of Language Disabilities</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Bolduc">Jonathan Bolduc</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Studies have demonstrated the effectiveness of music training approaches to help children with language disabilities. Because music is closely associated with a number of cognitive functions, including language, it has been hypothesized that musical skills transfer to other domains. Research suggests that music training strengthens basic auditory processing skills in dyslexic children and may ameliorate phonological deficits. Furthermore, music instruction has the particular advantage of being non-literacy-based, thus removing the frustrations that can be associated with reading and writing activities among children with specific learning disabilities. In this study, we assessed the effect of implementing an intensive music program on the development of language skills (phonological and reading) in 4- to 9-year-old children. Seventeen children (N=17) participated in the study. The experiment took place over 6 weeks in a controlled environment. Eighteen lessons of 40 minutes were offered during this period by two music specialists. The Dalcroze, Orff, and Kodaly approaches were used. A series of qualitative measures were implemented to document the contribution of music training to this population. Currently, the data is being analyzed. The first results show that learning music seems to significantly improve verbal memory. We already know that language disabilities are considered one of the main causes of school dropout as well as later professional and social failure. We aim to corroborate that an integrated music education program can provide children with language disabilities with the same opportunities to develop and succeed in school as their classmates. Scientifically, the results will contribute to advance the knowledge by identifying the more effective music education strategies to improve the overall development of children worldwide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=music%20education" title="music education">music education</a>, <a href="https://publications.waset.org/abstracts/search?q=music" title=" music"> music</a>, <a href="https://publications.waset.org/abstracts/search?q=art%20education" title=" art education"> art education</a>, <a href="https://publications.waset.org/abstracts/search?q=language%20diasabilities" title=" language diasabilities"> language diasabilities</a> </p> <a href="https://publications.waset.org/abstracts/139875/music-training-as-an-innovative-approach-to-the-treatment-of-language-disabilities" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/139875.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">231</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">118</span> Applying Serious Game Design Frameworks to Existing Games for Integration of Custom Learning Objectives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20D.%20Moore">Jonathan D. Moore</a>, <a href="https://publications.waset.org/abstracts/search?q=Mark%20G.%20Reith"> Mark G. Reith</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20S.%20Long"> David S. Long</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Serious games (SGs) have been shown to be an effective teaching tool in many contexts. Because of the success of SGs, several design frameworks have been created to expedite the process of making original serious games to teach specific learning objectives (LOs). Even with these frameworks, the time required to create a custom SG from conception to implementation can range from months to years. Furthermore, it is even more difficult to design a game framework that allows an instructor to create customized game variants supporting multiple LOs within the same field. This paper proposes a refactoring methodology to apply the theoretical principles from well-established design frameworks to a pre-existing serious game. The expected result is a generalized game that can be quickly customized to teach LOs not originally targeted by the game. This methodology begins by describing the general components in a game, then uses a combination of two SG design frameworks to extract the teaching elements present in the game. The identified teaching elements are then used as the theoretical basis to determine the range of LOs that can be taught by the game. This paper evaluates the proposed methodology by presenting a case study of refactoring the serious game Battlespace Next (BSN) to teach joint military capabilities. The range of LOs that can be taught by the generalized BSN are identified, and examples of creating custom LOs are given. Survey results from users of the generalized game are also provided. Lastly, the expected impact of this work is discussed and a road map for future work and evaluation is presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=serious%20games" title="serious games">serious games</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20objectives" title=" learning objectives"> learning objectives</a>, <a href="https://publications.waset.org/abstracts/search?q=game%20design" title=" game design"> game design</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20theory" title=" learning theory"> learning theory</a>, <a href="https://publications.waset.org/abstracts/search?q=game%20framework" title=" game framework"> game framework</a> </p> <a href="https://publications.waset.org/abstracts/156029/applying-serious-game-design-frameworks-to-existing-games-for-integration-of-custom-learning-objectives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156029.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">115</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">117</span> Safety Management on Construction Sites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Doku">Jonathan Doku</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study's goal was to evaluate construction site safety management in Ghana. The construction sector has long been seen as a high-risk business. It entails a variety of hazardous and challenging labor duties, such as lifting and working at a height, among others. The accident rate is a standard indicator for comparing the safety performance of construction projects. Because of its high-risk and fast-changing work environment, the construction business is regarded as one of the industries with the highest accident rates in the world. Many mishaps and work-related diseases have occurred there, and construction workers are particularly vulnerable to catastrophic calamities such as falls, collapses, and burial. The study's main goals were to discover characteristics that have a substantial impact on construction site safety, to evaluate the safety management methods utilized on construction sites, and to assess the obstacles associated with construction site safety management. The study was conducted using a quantitative research method and a purposive sampling strategy. Google forms were used to distribute self-administered surveys to 85 responders. 72 of the 85 questionnaires were completed and submitted for analysis, accounting for 84.7 percent of the total. The variables were analyzed using descriptive statistics, mean score ranking, and Cronbach's Alpha Coefficient to ensure the scale's reliability. The formal safety organization structure and the Safety checklist were identified as the key practices of safety management on site as part of the study goals. In addition, it was discovered that the most serious problem with safety management is ineffective supervision. To guarantee efficient monitoring and proper implementation of health and safety rules on building sites, management must be on the ball. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=construction" title="construction">construction</a>, <a href="https://publications.waset.org/abstracts/search?q=safety" title=" safety"> safety</a>, <a href="https://publications.waset.org/abstracts/search?q=risk" title=" risk"> risk</a>, <a href="https://publications.waset.org/abstracts/search?q=management" title=" management"> management</a> </p> <a href="https://publications.waset.org/abstracts/169073/safety-management-on-construction-sites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169073.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">81</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">116</span> Dancing in Bullets and in Brokenness: Metaphor in Terracotta on Canvas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Okewu">Jonathan Okewu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Socio-economic occurrences and developments in any society is usually a thing of concern especially when this is been jeopardised as a result of insecurity of all sorts. There are numerous channels that such issues are brought to the fore for attention. Among this channels are the art media and more precisely the ceramic art media. Renown ceramic artists in Nigeria have taken to the medium of expression (clay) to contribute to succinct issues as it affects the society. This study takes advantage of a unique form of ceramic press moulding termed clay palm press. This uncommon production technique has been developed in this study to interrogate socio-economic insecurity in the form of ceramic art titled; “dancing in bullets and in brokenness”. This work was made possible through a ceramic medium that has been termed “terracotta on canvas”. Extensive studio practice was carried out to generate the terracotta forms for this study. Findings from this study indicates that the medium and mode of execution of the art work shows a unique side of working with clay that negates tactile or three dimensionality of inured ceramic practice. Additionally, the process of clay palm press in this study indicates that it could be therapeutical against medical conditions of muscles of the palm. This is because the process tightens and develops the muscles of the palm further. Dancing in bullets and in brokenness as portrayed through the medium of terracotta on canvas that social and security challenges are not a limiting factor to a resolute Nigerian, despite all, the strong will of Nigerians keeps persisting and overcoming challenges. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=canvas" title="canvas">canvas</a>, <a href="https://publications.waset.org/abstracts/search?q=dancing%20in%20bullets%20and%20in%20brokenness" title=" dancing in bullets and in brokenness"> dancing in bullets and in brokenness</a>, <a href="https://publications.waset.org/abstracts/search?q=metaphor" title=" metaphor"> metaphor</a>, <a href="https://publications.waset.org/abstracts/search?q=terracotta" title=" terracotta"> terracotta</a>, <a href="https://publications.waset.org/abstracts/search?q=palm%20press" title=" palm press"> palm press</a> </p> <a href="https://publications.waset.org/abstracts/124597/dancing-in-bullets-and-in-brokenness-metaphor-in-terracotta-on-canvas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124597.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">129</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">115</span> Satellite Images to Determine Levels of Fire Severity in a Native Chilean Forest: Assessing the Responses of Soil Mesofauna Diversity to a Fire Event</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Carolina%20Morales">Carolina Morales</a>, <a href="https://publications.waset.org/abstracts/search?q=Ricardo%20Castro-Huerta"> Ricardo Castro-Huerta</a>, <a href="https://publications.waset.org/abstracts/search?q=Enrique%20A.%20Mundaca"> Enrique A. Mundaca</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The edaphic fauna is the main factor involved in the transformation of nutrients and soil decomposition processes. Edaphic organisms are highly sensitive to soil disturbances, which normally causes changes in the composition and abundance of such organisms. Fire is known to be a disturbing factor since it affects the physical, chemical and biological properties of the soil and the whole ecosystem. During the summer (December-March) of 2017, Chile suffered the major fire events recorded in its modern history, which affected a vast area and a number of ecosystem types. The objective of this study was first to use remote sensing satellite images and GIS (Geographic Information Systems) to assess and identify levels of fire severity in disturbed areas and to compare the responses of the soil mesofauna diversity among such areas. We identified four areas (treatments) with an ascending level of severity, namely: mild, medium, high severity, and free of fire. A non-affected patch of forest was established as a control. Three samples from each treatment were collected in the form of a soil cube (10x10x10 cm). Edaphic mesofauna was obtained from each sample through the Berlese-Tullgren funnel method. Collected specimens were quantified and identified, using the RTU (Recognisable Taxonomic Unit) criterion. Diversity was analysed using inferential statistics to compare Simpson and Shannon-Wiener indexes across treatments. As predicted, the unburned forest patch (control) exhibited higher diversity values than the treatments. Significantly higher diversity values were recorded in those treatments subjected to lower fire severity. We conclude that remote sensing zoning is an adequate tool to identify different levels of fire severity and that an edaphic mesofauna is a group of organisms that qualify as good bioindicators for monitoring soil recovery after fire events. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioindicator" title="bioindicator">bioindicator</a>, <a href="https://publications.waset.org/abstracts/search?q=Chile" title=" Chile"> Chile</a>, <a href="https://publications.waset.org/abstracts/search?q=fire%20severity%20level" title=" fire severity level"> fire severity level</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a> </p> <a href="https://publications.waset.org/abstracts/92135/satellite-images-to-determine-levels-of-fire-severity-in-a-native-chilean-forest-assessing-the-responses-of-soil-mesofauna-diversity-to-a-fire-event" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92135.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">160</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">114</span> Evaluation of the Effect of Lactose Derived Monosaccharide on Galactooligosaccharides Production by β-Galactosidase</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yenny%20Paola%20Morales%20Cort%C3%A9s">Yenny Paola Morales Cortés</a>, <a href="https://publications.waset.org/abstracts/search?q=Fabi%C3%A1n%20Rico%20Rodr%C3%ADguez"> Fabián Rico Rodríguez</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Carlos%20Serrato%20Berm%C3%BAdez"> Juan Carlos Serrato Bermúdez</a>, <a href="https://publications.waset.org/abstracts/search?q=Carlos%20Arturo%20Mart%C3%ADnez%20Riascos"> Carlos Arturo Martínez Riascos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Numerous benefits of galactooligosaccharides (GOS) as prebiotics have motivated the study of enzymatic processes for their production. These processes have special complexities due to several factors that make difficult high productivity, such as enzyme type, reaction medium pH, substrate concentrations and presence of inhibitors, among others. In the present work the production of galactooligosaccharides (with different degrees of polymerization: two, three and four) from lactose was studied. The study considers the formulation of a mathematical model that predicts the production of GOS from lactose using the enzyme β-galactosidase. The effect of pH in the reaction was studied. For that, phosphate buffer was used and with this was evaluated three pH values (6.0.6.5 and 7.0). Thus it was observed that at pH 6.0 the enzymatic activity insignificant. On the other hand, at pH 7.0 the enzymatic activity was approximately 27 times greater than at 6.5. The last result differs from previously reported results. Therefore, pH 7.0 was chosen as working pH. Additionally, the enzyme concentration was analyzed, which allowed observing that the effect of the concentration depends on the pH and the concentration was set for the following studies in 0.272 mM. Afterwards, experiments were performed varying the lactose concentration to evaluate its effects on the process and to generate the data for the adjustment of the mathematical model parameters. The mathematical model considers the reactions of lactose hydrolysis and transgalactosylation for the production of disaccharides and trisaccharides, with their inverse reactions. The production of tetrasaccharides was negligible and, because of that, it was not included in the model. The reaction was monitored by HPLC and for the quantitative analysis of the experimental data the Matlab programming language was used, including solvers for differential equations systems integration (ode15s) and nonlinear problems optimization (fminunc). The results confirm that the transgalactosylation and hydrolysis reactions are reversible, additionally inhibition by glucose and galactose is observed on the production of GOS. In relation to the production process of galactooligosaccharides, the results show that it is necessary to have high initial concentrations of lactose considering that favors the transgalactosylation reaction, while low concentrations favor hydrolysis reactions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%CE%B2-galactosidase" title="β-galactosidase">β-galactosidase</a>, <a href="https://publications.waset.org/abstracts/search?q=galactooligosaccharides" title=" galactooligosaccharides"> galactooligosaccharides</a>, <a href="https://publications.waset.org/abstracts/search?q=inhibition" title=" inhibition"> inhibition</a>, <a href="https://publications.waset.org/abstracts/search?q=lactose" title=" lactose"> lactose</a>, <a href="https://publications.waset.org/abstracts/search?q=Matlab" title=" Matlab"> Matlab</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a> </p> <a href="https://publications.waset.org/abstracts/65743/evaluation-of-the-effect-of-lactose-derived-monosaccharide-on-galactooligosaccharides-production-by-v-galactosidase" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65743.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">358</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">113</span> Teacher Agency in Media Literacy: A Qualitative Study of Bolivian Teachers and Their Room to Manoeuvre </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daniela%20Lamaison%20Sepulveda">Daniela Lamaison Sepulveda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Critical media literacy teaches people to think analytically about the information they receive through the media. It is heavily influenced by Paulo Freire’s critical pedagogy and the necessity of becoming conscious of one’s reality in order to transform it. This qualitative research examines the case of Bolivia, which experienced dramatic political change after the first indigenous president, Evo Morales, was elected in 2006. In 2010, the government passed an education reform — the Avelino Siñani Elizardo Pérez (ASEP) —that draws heavily on decolonial thought and the Freirean notion of critical consciousness. The extent to which these theories were implemented in practice is evaluated in context of a media literacy project, run by an NGO, that trains secondary school teachers from public schools across Bolivia through yearly workshops ranging from producing media to identifying fake news. This context is examined against the backdrop of the highly contested general elections in October 2019. While there is plenty of literature that outlines the benefits of teaching media literacy in the classroom and different ways to apply it, little research has been done analysing implementation at an institutional level and how to best enable teachers who are motivated to teach the subject. Through semi-structured interviews, document analysis and naturalistic observations, this study aims to identify the struggles faced by teachers who are dedicated to teaching critical media literacy in their classrooms and how they navigate educational spaces while being subject to a demanding national curriculum that supposedly also seeks to promote critical thinking. The interplay between the aspirations of teachers and NGOs in contrast to the top-down discourse and policy of governmental institutions provides for a very enlightening case. By exploring these institutional, cultural, sociopolitical and economic barriers the teachers face, this research attempts to contribute to the debate in media literacy theories concerned with implementing the practice in schools. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=media%20literacy" title="media literacy">media literacy</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20pedagogy" title=" critical pedagogy"> critical pedagogy</a>, <a href="https://publications.waset.org/abstracts/search?q=teacher%20agency" title=" teacher agency"> teacher agency</a>, <a href="https://publications.waset.org/abstracts/search?q=misinformation" title=" misinformation"> misinformation</a>, <a href="https://publications.waset.org/abstracts/search?q=education%20reform" title=" education reform"> education reform</a>, <a href="https://publications.waset.org/abstracts/search?q=Bolivia" title=" Bolivia"> Bolivia</a> </p> <a href="https://publications.waset.org/abstracts/128359/teacher-agency-in-media-literacy-a-qualitative-study-of-bolivian-teachers-and-their-room-to-manoeuvre" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128359.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">126</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">112</span> Two-Phase Flow Study of Airborne Transmission Control in Dental Practices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mojtaba%20Zabihi">Mojtaba Zabihi</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephen%20Munro"> Stephen Munro</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Little"> Jonathan Little</a>, <a href="https://publications.waset.org/abstracts/search?q=Ri%20Li"> Ri Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Joshua%20Brinkerhoff"> Joshua Brinkerhoff</a>, <a href="https://publications.waset.org/abstracts/search?q=Sina%20Kheirkhah"> Sina Kheirkhah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Occupational Safety and Health Administration (OSHA) identified dental workers at the highest risk of contracting COVID-19. This is because aerosol-generating procedures (AGP) during dental practices generate aerosols ( < 5µm) and droplets. These particles travel at varying speeds, in varying directions, and for varying durations. If these particles bear infectious viruses, their spreading causes airborne transmission of the virus in the dental room, exposing dentists, hygienists, dental assistants, and even other dental clinic clients to the infection risk. Computational fluid dynamics (CFD) simulation of two-phase flows based on a discrete phase model (DPM) is carried out to study the spreading of aerosol and droplets in a dental room. The simulation includes momentum, heat, and mass transfers between the particles and the airflow. Two simulations are conducted and compared. One simulation focuses on the effects of room ventilation in winter and summer on the particles' travel. The other simulation focuses on the control of aerosol and droplets' spreading. A suction collector is added near the source of aerosol and droplets, creating a flow sink in order to remove the particles. The effects of the suction flow on the aerosol and droplet travel are studied. The suction flow can remove aerosols and also reduce the spreading of droplets. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerosols" title="aerosols">aerosols</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID-19" title=" COVID-19"> COVID-19</a>, <a href="https://publications.waset.org/abstracts/search?q=dental" title=" dental"> dental</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20phase%20model" title=" discrete phase model"> discrete phase model</a>, <a href="https://publications.waset.org/abstracts/search?q=droplets" title=" droplets"> droplets</a>, <a href="https://publications.waset.org/abstracts/search?q=two-phase%20flow" title=" two-phase flow"> two-phase flow</a> </p> <a href="https://publications.waset.org/abstracts/130160/two-phase-flow-study-of-airborne-transmission-control-in-dental-practices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130160.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">265</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">111</span> The Role of Cognitive Impairment in Asthma Self-Management Behaviors and Outcomes in Older Adults</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gali%20Moritz">Gali Moritz</a>, <a href="https://publications.waset.org/abstracts/search?q=Jacqueline%20H.%20Becker"> Jacqueline H. Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Jyoti%20V.%20Ankam"> Jyoti V. Ankam</a>, <a href="https://publications.waset.org/abstracts/search?q=Kimberly%20Arcoleo"> Kimberly Arcoleo</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthew%20Wysocki"> Matthew Wysocki</a>, <a href="https://publications.waset.org/abstracts/search?q=Roee%20Holtzer"> Roee Holtzer</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Wisnivesky"> Juan Wisnivesky</a>, <a href="https://publications.waset.org/abstracts/search?q=Paula%20J.%20Busse"> Paula J. Busse</a>, <a href="https://publications.waset.org/abstracts/search?q=Alex%20D.%20Federman"> Alex D. Federman</a>, <a href="https://publications.waset.org/abstracts/search?q=Sunit%20P.%20Jariwala"> Sunit P. Jariwala</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20M.%20Feldman"> Jonathan M. Feldman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: Cognitive impairment (CI), whose incidence is greater among ethnic/racial minorities, is a significant barrier to asthma self-management (SM) behaviors and outcomes in older adults. The aim of this study was to examine the relationships between CI, assessed using the Montreal Cognitive Assessment (MoCA), and asthma SM behaviors and outcomes in a sample of predominantly Black and Hispanic participants. Additionally, we evaluated whether using two different MoCA cutoff scores influenced the association between CI and study outcomes. Methods: Baseline cross-sectional data were extracted from a longitudinal study of older adults with asthma (N=165) age≥ 60 years and used for analysis. Cognition was assessed using the MoCA. Asthma control, asthma-related quality of life (QOL), inhaled corticosteroid (ICS) dosing, and ICS adherence were assessed using self-report. The inhaler technique was observed and rated. Results: Using established MoCA cutoff scores of 23 and 26 yielded 45% and 74% CI rates, respectively. CI, defined using the 23 cutoff score, was significantly associated with worse asthma control (p=.04) and worse ICS adherence (p=.01). With a cutoff score of 26, only asthma-related QOL was significantly associated with CI (p=.03). Race/ethnicity and education did not moderate the relationships between CI and asthma SM behaviors and outcomes. Conclusions: CI in older adults with asthma is associated with important clinical outcomes, but this relationship is influenced by the cutoff score used to define CI. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cognition" title="cognition">cognition</a>, <a href="https://publications.waset.org/abstracts/search?q=respiratory" title=" respiratory"> respiratory</a>, <a href="https://publications.waset.org/abstracts/search?q=elderly" title=" elderly"> elderly</a>, <a href="https://publications.waset.org/abstracts/search?q=testing" title=" testing"> testing</a>, <a href="https://publications.waset.org/abstracts/search?q=adherence" title=" adherence"> adherence</a>, <a href="https://publications.waset.org/abstracts/search?q=validity" title=" validity"> validity</a> </p> <a href="https://publications.waset.org/abstracts/163963/the-role-of-cognitive-impairment-in-asthma-self-management-behaviors-and-outcomes-in-older-adults" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163963.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">80</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">110</span> 4D Modelling of Low Visibility Underwater Archaeological Excavations Using Multi-Source Photogrammetry in the Bulgarian Black Sea</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rodrigo%20Pacheco-Ruiz">Rodrigo Pacheco-Ruiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Adams"> Jonathan Adams</a>, <a href="https://publications.waset.org/abstracts/search?q=Felix%20Pedrotti"> Felix Pedrotti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduces the applicability of underwater photogrammetric survey within challenging conditions as the main tool to enhance and enrich the process of documenting archaeological excavation through the creation of 4D models. Photogrammetry was being attempted on underwater archaeological sites at least as early as the 1970s’ and today the production of traditional 3D models is becoming a common practice within the discipline. Photogrammetry underwater is more often implemented to record exposed underwater archaeological remains and less so as a dynamic interpretative tool.  Therefore, it tends to be applied in bright environments and when underwater visibility is > 1m, reducing its implementation on most submerged archaeological sites in more turbid conditions. Recent years have seen significant development of better digital photographic sensors and the improvement of optical technology, ideal for darker environments. Such developments, in tandem with powerful processing computing systems, have allowed underwater photogrammetry to be used by this research as a standard recording and interpretative tool. Using multi-source photogrammetry (5, GoPro5 Hero Black cameras) this paper presents the accumulation of daily (4D) underwater surveys carried out in the Early Bronze Age (3,300 BC) to Late Ottoman (17th Century AD) archaeological site of Ropotamo in the Bulgarian Black Sea under challenging conditions (< 0.5m visibility). It proves that underwater photogrammetry can and should be used as one of the main recording methods even in low light and poor underwater conditions as a way to better understand the complexity of the underwater archaeological record. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=4D%20modelling" title="4D modelling">4D modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=Black%20Sea%20Maritime%20Archaeology%20Project" title=" Black Sea Maritime Archaeology Project"> Black Sea Maritime Archaeology Project</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-source%20photogrammetry" title=" multi-source photogrammetry"> multi-source photogrammetry</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20visibility%20underwater%20survey" title=" low visibility underwater survey"> low visibility underwater survey</a> </p> <a href="https://publications.waset.org/abstracts/77593/4d-modelling-of-low-visibility-underwater-archaeological-excavations-using-multi-source-photogrammetry-in-the-bulgarian-black-sea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/77593.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">236</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">109</span> Bioinformatic Design of a Non-toxic Modified Adjuvant from the Native A1 Structure of Cholera Toxin with Membrane Synthetic Peptide of Naegleria fowleri</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Frida%20Carrillo%20Morales">Frida Carrillo Morales</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Maricela%20Carrasco%20Y%C3%A9pez"> Maria Maricela Carrasco Yépez</a>, <a href="https://publications.waset.org/abstracts/search?q=Sa%C3%BAl%20Rojas%20Hern%C3%A1ndez"> Saúl Rojas Hernández</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Naegleria fowleri is the causative agent of primary amebic meningoencephalitis, this disease is acute and fulminant that affects humans. It has been reported that despite the existence of therapeutic options against this disease, its mortality rate is 97%. Therefore, the need arises to have vaccines that confer protection against this disease and, in addition to developing adjuvants to enhance the immune response. In this regard, in our work group, we obtained a peptide designed from the membrane protein MP2CL5 of Naegleria fowleri called Smp145 that was shown to be immunogenic; however, it would be of great importance to enhance its immunological response, being able to co-administer it with a non-toxic adjuvant. Therefore, the objective of this work was to carry out the bioinformatic design of a peptide of the Naegleria fowleri membrane protein MP2CL5 conjugated with a non-toxic modified adjuvant from the native A1 structure of Cholera Toxin. For which different bioinformatics tools were used to obtain a model with a modification in amino acid 61 of the A1 subunit of the CT (CTA1), to which the Smp145 peptide was added and both molecules were joined with a 13-glycine linker. As for the results obtained, the modification in CTA1 bound to the peptide produces a reduction in the toxicity of the molecule in in silico experiments, likewise, the prediction in the binding of Smp145 to the receptor of B cells suggests that the molecule is directed in specifically to the BCR receptor, decreasing its native enzymatic activity. The stereochemical evaluation showed that the generated model has a high number of adequately predicted residues. In the ERRAT test, the confidence with which it is possible to reject regions that exceed the error values was evaluated, in the generated model, a high score was obtained, which determines that the model has a good structural resolution. Therefore, the design of the conjugated peptide in this work will allow us to proceed with its chemical synthesis and subsequently be able to use it in the mouse meningitis protection model caused by N. fowleri. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=immunology" title="immunology">immunology</a>, <a href="https://publications.waset.org/abstracts/search?q=vaccines" title=" vaccines"> vaccines</a>, <a href="https://publications.waset.org/abstracts/search?q=pathogens" title=" pathogens"> pathogens</a>, <a href="https://publications.waset.org/abstracts/search?q=infectious%20disease" title=" infectious disease"> infectious disease</a> </p> <a href="https://publications.waset.org/abstracts/166457/bioinformatic-design-of-a-non-toxic-modified-adjuvant-from-the-native-a1-structure-of-cholera-toxin-with-membrane-synthetic-peptide-of-naegleria-fowleri" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166457.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">92</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">108</span> Potential for Biological Control of Postharvest Fungal Rot of White Yam (Dioscorea rotundata Poir) Tubers in Storage with Trichoderma harzianum</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Victor%20Iorungwa%20Gwa">Victor Iorungwa Gwa</a>, <a href="https://publications.waset.org/abstracts/search?q=Ebenezer%20Jonathan%20Ekefan"> Ebenezer Jonathan Ekefan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Potential of Trichoderma harzianum for biological control of postharvest fungal rot of white yam (Dioscorea rotundata Poir) tubers in storage was studied. Pathogenicity test revealed the susceptibility of healthy looking yam tubers to Aspergillus niger, Botryodiplodia theobromae, and Fusarium oxysporum f. sp. melonganae after fourteen days of inoculation. Treatments comprising A. niger, B. theobromae, and F. oxysporum each paired with T. harzianum and were arranged in completely randomized design and stored for five months. Experiments were conducted between December 2015 and April 2016 and December 2016 and April 2017. Results showed that tubers treated with the pathogenic fungi alone caused mean percentage rot of between 6.67 % (F. oxysporum) and 22.22 % (A. niger) while the paired treatments produced only between 2.22 % (T. harzianum by F. oxysporum) and 6.67 % (T. harzianum by A. niger). In the second year of storage, mean percentage rot was found to be between 13.33 % (F. oxysporum) and 28.89 % (A. niger) while in the paired treatment rot was only between 6.67 % (F. oxysporum) and 8.89% (A. niger). Tubers treated with antagonist alone produced 0.00 % and 2.22 % in the first and second year, respectively. Result revealed that there was a significant difference (P ≤ 0.05) in mean percentage rot between the first year and the second year except where B. theobromae was inoculated alone, A. niger and T. harzianum paired and B. theobromae and T. harzianum paired. The most antagonised fungus in paired treatment for both years was F. oxysporum f. sp. melonganae, while the least antagonised, was A. niger and B. theobromae. It is, therefore, concluded that T. harzianum has potentials to control rot causing pathogens of yam tubers in storage. This can compliment or provide better alternative ways of reducing rot in yam tubers than by the use of chemical fungicides which are not environmentally friendly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biological%20control" title="biological control">biological control</a>, <a href="https://publications.waset.org/abstracts/search?q=fungal%20rot" title=" fungal rot"> fungal rot</a>, <a href="https://publications.waset.org/abstracts/search?q=postharvest" title=" postharvest"> postharvest</a>, <a href="https://publications.waset.org/abstracts/search?q=Trichoderma%20harzianum" title=" Trichoderma harzianum"> Trichoderma harzianum</a>, <a href="https://publications.waset.org/abstracts/search?q=white%20yam" title=" white yam"> white yam</a> </p> <a href="https://publications.waset.org/abstracts/122946/potential-for-biological-control-of-postharvest-fungal-rot-of-white-yam-dioscorea-rotundata-poir-tubers-in-storage-with-trichoderma-harzianum" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122946.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">162</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">107</span> Forecasting Equity Premium Out-of-Sample with Sophisticated Regression Training Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Iworiso">Jonathan Iworiso</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Forecasting the equity premium out-of-sample is a major concern to researchers in finance and emerging markets. The quest for a superior model that can forecast the equity premium with significant economic gains has resulted in several controversies on the choice of variables and suitable techniques among scholars. This research focuses mainly on the application of Regression Training (RT) techniques to forecast monthly equity premium out-of-sample recursively with an expanding window method. A broad category of sophisticated regression models involving model complexity was employed. The RT models include Ridge, Forward-Backward (FOBA) Ridge, Least Absolute Shrinkage and Selection Operator (LASSO), Relaxed LASSO, Elastic Net, and Least Angle Regression were trained and used to forecast the equity premium out-of-sample. In this study, the empirical investigation of the RT models demonstrates significant evidence of equity premium predictability both statistically and economically relative to the benchmark historical average, delivering significant utility gains. They seek to provide meaningful economic information on mean-variance portfolio investment for investors who are timing the market to earn future gains at minimal risk. Thus, the forecasting models appeared to guarantee an investor in a market setting who optimally reallocates a monthly portfolio between equities and risk-free treasury bills using equity premium forecasts at minimal risk. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=regression%20training" title="regression training">regression training</a>, <a href="https://publications.waset.org/abstracts/search?q=out-of-sample%20forecasts" title=" out-of-sample forecasts"> out-of-sample forecasts</a>, <a href="https://publications.waset.org/abstracts/search?q=expanding%20window" title=" expanding window"> expanding window</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20predictability" title=" statistical predictability"> statistical predictability</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20significance" title=" economic significance"> economic significance</a>, <a href="https://publications.waset.org/abstracts/search?q=utility%20gains" title=" utility gains"> utility gains</a> </p> <a href="https://publications.waset.org/abstracts/154547/forecasting-equity-premium-out-of-sample-with-sophisticated-regression-training-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154547.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">107</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">106</span> Environmental Consequences of Metal Concentrations in Stream Sediments of Atoyac River Basin, Central Mexico: Natural and Industrial Influences</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=V.%20C.%20Shruti">V. C. Shruti</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20F.%20Rodr%C3%ADguez-Espinosa"> P. F. Rodríguez-Espinosa</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20C.%20Escobedo-Ur%C3%ADas"> D. C. Escobedo-Urías</a>, <a href="https://publications.waset.org/abstracts/search?q=Estefan%C3%ADa%20Martinez%20Tavera"> Estefanía Martinez Tavera</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20P.%20Jonathan"> M. P. Jonathan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Atoyac River, a major south-central river flowing through the states of Puebla and Tlaxcala in Mexico is significantly impacted by the natural volcanic inputs in addition with wastewater discharges from urban, agriculture and industrial zones. In the present study, core samples were collected from R. Atoyac and analyzed for sediment granularity, major (Al, Fe, Ca, Mg, K, P and S) and trace elemental concentrations (Ba, Cr, Cd, Mn, Pb, Sr, V, Zn, Zr). The textural studies reveal that the sediments are mostly sand sized particles exceeding 99% and with very few to no presence of mud fractions. It is observed that most of the metals like (avg: all values in μg g<sup>-1</sup>) Ca (35,528), Mg (10,789), K (7453), S (1394), Ba (203), Cr (30), Cd (4), Pb (11), Sr (435), Zn (76) and Zr (88) are enriched throughout the sediments mainly sourced from volcanic inputs, source rock composition of Atoyac River basin and industrial influences from the Puebla city region. Contamination indices, such as anthropogenic factor (AF), enrichment factor (EF) and geoaccumulation index (I<sub>geo</sub>), were used to investigate the level of contamination and toxicity as well as quantitatively assess the influences of human activities on metal concentrations. The AF values (>1) for Ba, Ca, Mg, Na, K, P and S suggested volcanic inputs from the study region, where as Cd and Zn are attributed to the impacts of industrial inputs in this zone. The EF and I<sub>geo</sub> values revealed an extreme enrichment of S and Cd. The ecological risks were evaluated using potential ecological risk index (RI) and the results indicate that the metals Cd and V pose a major hazard for the biological community. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Atoyac%20River" title="Atoyac River">Atoyac River</a>, <a href="https://publications.waset.org/abstracts/search?q=contamination%20indices" title=" contamination indices"> contamination indices</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20concentrations" title=" metal concentrations"> metal concentrations</a>, <a href="https://publications.waset.org/abstracts/search?q=Mexico" title=" Mexico"> Mexico</a>, <a href="https://publications.waset.org/abstracts/search?q=textural%20studies" title=" textural studies"> textural studies</a> </p> <a href="https://publications.waset.org/abstracts/56024/environmental-consequences-of-metal-concentrations-in-stream-sediments-of-atoyac-river-basin-central-mexico-natural-and-industrial-influences" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56024.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">292</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">105</span> Geosynthetic Reinforced Unpaved Road: Literature Study and Design Example </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Jayalakshmi">D. Jayalakshmi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20S.%20Bhosale"> S. S. Bhosale </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper, in its first part, presents the state-of-the-art literature of design approaches for geosynthetic reinforced unpaved roads. The literature starting since 1970 and the critical appraisal of flexible pavement design by Giroud and Han (2004) and Jonathan Fannin (2006) is presented. The design example is illustrated for Indian conditions. The example emphasizes the results computed by Giroud and Han's (2004) design method with the Indian road congress guidelines by IRC SP 72 -2015. The input data considered are related to the subgrade soil condition of Maharashtra State in India. The unified soil classification of the subgrade soil is inorganic clay with high plasticity (CH), which is expansive with a California bearing ratio (CBR) of 2% to 3%. The example exhibits the unreinforced case and geotextile as reinforcement by varying the rut depth from 25 mm to 100 mm. The present result reveals the base thickness for the unreinforced case from the IRC design catalogs is in good agreement with Giroud and Han (2004) approach for a range of 75 mm to 100 mm rut depth. Since Giroud and Han (2004) method is applicable for both reinforced and unreinforced cases, for the same data with appropriate Nc factor, for the same rut depth, the base thickness for the reinforced case has arrived for the Indian condition. From this trial, for the CBR of 2%, the base thickness reduction due to geotextile inclusion is 35%. For the CBR range of 2% to 5% with different stiffness in geosynthetics, the reduction in base course thickness will be evaluated, and the validation will be executed by the full-scale accelerated pavement testing set up at the College of Engineering Pune (COE), India. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=base%20thickness" title="base thickness">base thickness</a>, <a href="https://publications.waset.org/abstracts/search?q=design%20approach" title=" design approach"> design approach</a>, <a href="https://publications.waset.org/abstracts/search?q=equation" title=" equation"> equation</a>, <a href="https://publications.waset.org/abstracts/search?q=full%20scale%20accelerated%20pavement%20set%20up" title=" full scale accelerated pavement set up"> full scale accelerated pavement set up</a>, <a href="https://publications.waset.org/abstracts/search?q=Indian%20condition" title=" Indian condition"> Indian condition</a> </p> <a href="https://publications.waset.org/abstracts/134938/geosynthetic-reinforced-unpaved-road-literature-study-and-design-example" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/134938.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">193</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">104</span> Relational Effect of Parent Interest, Basic School Attended, Gender, and Scare of Basic School Mathematics Teacher on Student Interest in Mathematics </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yarhands%20Dissou%20Arthur">Yarhands Dissou Arthur</a>, <a href="https://publications.waset.org/abstracts/search?q=Samuel%20Asiedu%20Addo"> Samuel Asiedu Addo</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Annan"> Jonathan Annan </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Interest in subject specific is very essential in the quest to ensure effective teaching and learning. In building interest in subject specific areas requires certain factors and strategies well-spelled out.The factors such as the gender of the student, the type of basic school attended, the parent interest as well as the scare of the basic school mathematics teacher is very important to consider. The relational effect and the contribution these above mentioned variables on student have not been fully investigated and this paper address the effect of these factors on the student interest. In the attainment of this goal, the current paper addresses the effect of parent interest, the type of basic school attended, the scare by basic school mathematics teacher and its effect on student’s interest in mathematics. A cross sectional data collected from two hundred and sixty post-secondary school student were analyzed using descriptive and inferential statistical methods by aid of SPSS version 16. The study found that parent interest and value for mathematics significantly influenced students interest and joy in solving mathematical problems. Moreover, we also observed that the fear imposed by basic school mathematics teachers was found to significantly influence students’ interest. The study further found that the type of basic school attended and gender are factors that do not influence students’ interest in mathematics. In addition to concluding that a student’s interest is influenced by both parent interest and the fear of basic school mathematics teacher, the study also showed that the type of basic school attended and gender does not affect the students’ interest in mathematics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gender" title="gender">gender</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematics%20interest" title=" mathematics interest"> mathematics interest</a>, <a href="https://publications.waset.org/abstracts/search?q=teacher%20interest" title=" teacher interest"> teacher interest</a>, <a href="https://publications.waset.org/abstracts/search?q=teacher%20interest" title=" teacher interest"> teacher interest</a>, <a href="https://publications.waset.org/abstracts/search?q=student%20interest" title=" student interest"> student interest</a> </p> <a href="https://publications.waset.org/abstracts/41372/relational-effect-of-parent-interest-basic-school-attended-gender-and-scare-of-basic-school-mathematics-teacher-on-student-interest-in-mathematics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41372.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">367</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=M.%20Jonathan%20D.%20Morales&page=3" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=M.%20Jonathan%20D.%20Morales&page=1">1</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=M.%20Jonathan%20D.%20Morales&page=2">2</a></li> <li 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