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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> 415</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Juan Pablo Rubio Ospina</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">295</span> Production of Bioethanol through Hydrolysis of Agro-Industrial Banana Crop Residues</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S%C3%A1nchez%20Acu%C3%B1a">Sánchez Acuña</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Camilo"> Juan Camilo</a>, <a href="https://publications.waset.org/abstracts/search?q=Granados%20G%C3%B3mez"> Granados Gómez</a>, <a href="https://publications.waset.org/abstracts/search?q=Mildred%20Magaly"> Mildred Magaly</a>, <a href="https://publications.waset.org/abstracts/search?q=Navarrete%20Rodr%C3%ADguez"> Navarrete Rodríguez</a>, <a href="https://publications.waset.org/abstracts/search?q=Luisa%20Fernanda"> Luisa Fernanda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, the main biofuels source production as bioethanol is food crops. This means a high competition between foods and energy production. For this reason, it is necessary to take into account the use of new raw materials friendly to the environment. The main objective of this paper is to evaluate the potential of the agro-industrial banana crop residues in the production of bioethanol. A factorial design of 2<sup>4</sup> was used, the design has variables such as pH, time and concentration of hydrolysis, another variable is the time of fermentation that is of 7 or 15 days. In the hydrolysis phase, the pH is acidic (H<sub>2</sub>SO<sub>4</sub>) or basic (NaOH), the time is 30 or 15 minutes and the concentration is 0.1 or 0.5 M. It was observed that basic media, low concentrations, fermentation, and higher pretreatment times produced better performance in terms of biofuel obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioethanol" title="bioethanol">bioethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=biofuels" title=" biofuels"> biofuels</a>, <a href="https://publications.waset.org/abstracts/search?q=banana%20waste" title=" banana waste"> banana waste</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrolysis" title=" hydrolysis"> hydrolysis</a> </p> <a href="https://publications.waset.org/abstracts/54596/production-of-bioethanol-through-hydrolysis-of-agro-industrial-banana-crop-residues" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54596.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">433</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">294</span> Data Acquisition System for Automotive Testing According to the European Directive 2004/104/EC</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Herminio%20Mart%C3%ADnez-Garc%C3%ADa">Herminio Martínez-García</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20G%C3%A1miz"> Juan Gámiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Yolanda%20Bolea"> Yolanda Bolea</a>, <a href="https://publications.waset.org/abstracts/search?q=Antoni%20Grau"> Antoni Grau</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article presents an interactive system for data acquisition in vehicle testing according to the test process defined in automotive directive 2004/104/EC. The project has been designed and developed by authors for the Spanish company Applus-LGAI. The developed project will result in a new process, which will involve the creation of braking cycle test defined in the aforementioned automotive directive. It will also allow the analysis of new vehicle features that was not feasible, allowing an increasing interaction with the vehicle. Potential users of this system in the short term will be vehicle manufacturers and in a medium term the system can be extended to testing other automotive components and EMC tests. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=automotive%20process" title="automotive process">automotive process</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20acquisition%20system" title=" data acquisition system"> data acquisition system</a>, <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20compatibility%20%28EMC%29%20testing" title=" electromagnetic compatibility (EMC) testing"> electromagnetic compatibility (EMC) testing</a>, <a href="https://publications.waset.org/abstracts/search?q=European%20Directive%202004%2F104%2FEC" title=" European Directive 2004/104/EC"> European Directive 2004/104/EC</a> </p> <a href="https://publications.waset.org/abstracts/41207/data-acquisition-system-for-automotive-testing-according-to-the-european-directive-2004104ec" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41207.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">346</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">293</span> Installing Beehives in Solar Parks to Enhance Local Biodiversity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nuria%20Rubio">Nuria Rubio</a>, <a href="https://publications.waset.org/abstracts/search?q=Mar%C3%ADa%20Campo"> María Campo</a>, <a href="https://publications.waset.org/abstracts/search?q=Joana%20Ruiz"> Joana Ruiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Paola%20Vecino"> Paola Vecino</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Renewable energies have been proposed for some years as a solution to the ecological crisis caused by traditional fuels. The installation of solar parks for electricity production is therefore necessary for a transition to cleaner energy. Additionally, spaces occupied by solar parks can be ideal places for biodiversity promotion consisting in controlled areas allowing free transit of numerous animal species in absence of phytosanitary products or other substances commonly used in rural areas. The main objective of this project is increasing local biodiversity. Secondary objectives include the installation of beehives with Apis mellifera iberiensis swarms (native honeybee species), the monitoring and periodic evaluation of the state of health and demographic progression of these swarms and study of biodiversity increase in these areas, mainly due to the presence of Apis mellifera iberiensis. Prior to bee-hives installation, a preliminary study of the area is carried out to quantify floral load, biocenosis and geo-climatological characteristics of the area of study for determining the optimal number of hives for the benefit of the local ecosystem. Once beehives set up, the bee-swarms health status is monitored and evaluated quarterly using monitoring systems. Parameters studies are weight, humidity inside the hive, external and internal temperature, and sound inside the hive. Furthermore, a biodiversity study of the area was conducted by direct observation and quantification of species (S) in the area of bee-foraging (1 km around the beehives). A great diversity of species has been detected in the area of study. Therefore, the population of Apis mellifera iberiensis is not displacing other pollinators in the area, on the contrary, results show that it is contributing to the pollination of the different plant species enhancing wild bees’ biodiversity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiversity" title="biodiversity">biodiversity</a>, <a href="https://publications.waset.org/abstracts/search?q=honeybee" title=" honeybee"> honeybee</a>, <a href="https://publications.waset.org/abstracts/search?q=pollination" title=" pollination"> pollination</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20park" title=" solar park"> solar park</a> </p> <a href="https://publications.waset.org/abstracts/182137/installing-beehives-in-solar-parks-to-enhance-local-biodiversity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182137.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">59</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">292</span> Mobile Health Apps Can Cause More Harm Due to Health Anxiety Than Good</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Malik%20Takreem%20Ahmad">Malik Takreem Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Lamata"> Pablo Lamata</a>, <a href="https://publications.waset.org/abstracts/search?q=Rasi%20Mizori"> Rasi Mizori</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: In recent years, mobile health apps have grown in popularity as a means for people to track and manage their health. While there is increasing worry that these applications may potentially contribute to the emergence of health anxiety, they can also help to encourage healthy behaviours and provide access to health information. Objective: The objective of this literature review is to look at available mhealth apps and critically evaluate the compromise between reassurance and anxiety. Methodology: A literature review was carried out to analyse the effects of mhealth apps on the creation of health anxiety within the general population. PubMed and SCOPUS were used to search for relevant articles, and abstracts were screened using inclusion criteria of the terms: mhealth apps; e-Health; healthcare apps; cyberchondria; Health anxiety; illness anxiety disorder. A total of 27 studies were included in the review. Results and discussion: The findings suggest a direct relationship between mobile health app use and health anxiety. The impact of mobile health apps on health anxiety may depend on how they are used - individuals receiving a constant stream of health-related information may trigger unnecessary concern about one's health. The need for more regulation and oversight is identified, which can lead to app quality and safety consistency. There are also concerns about data security and privacy and the resulting "digital gap" for individuals without mobiles or internet access. Conclusion: While health apps can be valuable tools for managing and tracking health, individuals need to use them in a balanced and informed way to avoid increased anxiety. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mobile%20health" title="mobile health">mobile health</a>, <a href="https://publications.waset.org/abstracts/search?q=mhealth%20apps" title=" mhealth apps"> mhealth apps</a>, <a href="https://publications.waset.org/abstracts/search?q=cyberchondria" title=" cyberchondria"> cyberchondria</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20anxiety" title=" health anxiety"> health anxiety</a> </p> <a href="https://publications.waset.org/abstracts/163156/mobile-health-apps-can-cause-more-harm-due-to-health-anxiety-than-good" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163156.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">97</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">291</span> Towards the Inhibition Mechanism of Lysozyme Fibrillation by Hydrogen Sulfide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Indra%20Gonzalez%20Ojeda">Indra Gonzalez Ojeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Tatiana%20Quinones"> Tatiana Quinones</a>, <a href="https://publications.waset.org/abstracts/search?q=Manuel%20Rosario"> Manuel Rosario</a>, <a href="https://publications.waset.org/abstracts/search?q=Igor%20Lednev"> Igor Lednev</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Lopez%20Garriga"> Juan Lopez Garriga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Amyloid fibrils are stable aggregates of misfolded protein associated with many neurodegenerative disorders. It has been shown that hydrogen sulfide (H2S), inhibits the fibrillation of lysozyme through the formation of trisulfide (S-S-S) bonds. However, the overall mechanism remains elusive. Here, the concentration dependence of H2S effect was investigated using Atomic force microscopy (AFM), non-resonance Raman spectroscopy, Deep-UV Raman spectroscopy and circular dichroism (CD). It was found that small spherical aggregates with trisulfide bonds and a unique secondary structure were formed instead of amyloid fibrils when adding concentrations of 25 mM and 50 mM of H2S. This could indicate that H2S might serve as a protecting agent for the protein. However, further characterization of these aggregates and their trisulfide bonds is needed to fully unravel the function H2S has on protein fibrillation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amyloid%20fibrils" title="amyloid fibrils">amyloid fibrils</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20sulfide" title=" hydrogen sulfide"> hydrogen sulfide</a>, <a href="https://publications.waset.org/abstracts/search?q=protein%20folding" title=" protein folding"> protein folding</a>, <a href="https://publications.waset.org/abstracts/search?q=raman%20spectroscopy" title=" raman spectroscopy"> raman spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/86031/towards-the-inhibition-mechanism-of-lysozyme-fibrillation-by-hydrogen-sulfide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86031.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">220</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">290</span> The LIP’s Electric Propulsion Development for Chinese Spacecraft</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhang%20Tianping">Zhang Tianping</a>, <a href="https://publications.waset.org/abstracts/search?q=Jia%20Yanhui"> Jia Yanhui</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Juan"> Li Juan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Le"> Yang Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Hao"> Yang Hao</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Wei"> Yang Wei</a>, <a href="https://publications.waset.org/abstracts/search?q=Sun%20Xiaojing"> Sun Xiaojing</a>, <a href="https://publications.waset.org/abstracts/search?q=Shi%20Kai"> Shi Kai</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Xingda"> Li Xingda</a>, <a href="https://publications.waset.org/abstracts/search?q=Sun%20Yunkui"> Sun Yunkui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lanzhou Institute of Physics (LIP) is the major supplier of electric propulsion subsystems for Chinese satellite platforms. The development statuses of these electric propulsion subsystems were summarized including the LIPS-200 ion electric propulsion subsystem (IEPS) for DFH-3B platform, the LIPS-300 IEPS for DFH-5 and DFH-4SP platform, the LIPS-200+ IEPS for DFH-4E platform and near-earth asteroid exploration spacecraft, the LIPS-100 IEPS for small satellite platform, the LHT-100 hall electric propulsion subsystem (HEPS) for flight test on XY-2 satellite, the LHT-140 HEPS for large LEO spacecraft, the LIPS-400 IEPS for deep space exploration mission and other EPS for other Chinese spacecraft. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ion%20electric%20propulsion" title="ion electric propulsion">ion electric propulsion</a>, <a href="https://publications.waset.org/abstracts/search?q=hall%20electric%20propulsion" title=" hall electric propulsion"> hall electric propulsion</a>, <a href="https://publications.waset.org/abstracts/search?q=satellite%20platform" title=" satellite platform"> satellite platform</a>, <a href="https://publications.waset.org/abstracts/search?q=LIP" title=" LIP"> LIP</a> </p> <a href="https://publications.waset.org/abstracts/39136/the-lips-electric-propulsion-development-for-chinese-spacecraft" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39136.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">746</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">289</span> Financial Analysis of the Foreign Direct in Mexico</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juan%20Pe%C3%B1a%20Aguilar">Juan Peña Aguilar</a>, <a href="https://publications.waset.org/abstracts/search?q=Lilia%20Villasana"> Lilia Villasana</a>, <a href="https://publications.waset.org/abstracts/search?q=Rodrigo%20Valencia"> Rodrigo Valencia</a>, <a href="https://publications.waset.org/abstracts/search?q=Alberto%20Pastrana"> Alberto Pastrana</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Vivanco"> Martin Vivanco</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Pe%C3%B1a%20C"> Juan Peña C </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Each year a growing number of companies entering Mexico in search of the domestic market share. These activities, including stores, telephone long distance and local raw materials and energy, and particularly the financial sector, have managed to significantly increase its weight in the flows of FDI in Mexico , however, you should consider whether these trends FDI are positive for the Mexican economy and these activities increase Mexican exports in the medium term , and its share in GDP , gross fixed capital formation and employment. In general stresses that these activities, by far, have been unable to significantly generate linkages with the rest of the economy, a process that has not favored with competitiveness policies and activities aimed at these neutral or horizontal. Since the nineties foreign direct investment (FDI) has shown a remarkable dynamism, both internationally and in Latin America and in Mexico. Only in Mexico the first recipient of FDI in importance in Latin America during 1990-1995 and was displaced by Brazil since FDI increased from levels below 1 % of GDP during the eighties to around 3 % of GDP during the nineties. Its impact has been significant not only from a macroeconomic perspective , it has also allowed the generation of a new industrial production structure and organization, parallel to a significant modernization of a segment of the economy. The case of Mexico also is particularly interesting and relevant because the destination of FDI until 1993 had focused on the purchase of state assets during privatization process. This paper aims to present FDI flows in Mexico and analyze the different business strategies that have been touched and encouraged by the FDI. On the one hand, looking briefly discuss regulatory issues and source and recipient of FDI sectors. Furthermore, the paper presents in more detail the impacts and changes that generated the FDI contribution of FDI in the Mexican economy , besides the macroeconomic context and later legislative changes that resulted in the current regulations is examined around FDI in Mexico, including aspects of the Free Trade Agreement (NAFTA). It is worth noting that foreign investment can not only be considered from the perspective of the receiving economic units. Instead, these flows also reflect the strategic interests of transnational corporations (TNCs) and other companies seeking access to markets and increased competitiveness of their production networks and global distribution, among other reasons. Similarly it is important to note that foreign investment in its various forms is critically dependent on historical and temporal aspects. Thus, the same functionality can vary significantly depending on the specific characteristics of both receptor units as sources of FDI, including macroeconomic, institutional, industrial organization, and social aspects, among others. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=foreign%20direct%20investment%20%28FDI%29" title="foreign direct investment (FDI)">foreign direct investment (FDI)</a>, <a href="https://publications.waset.org/abstracts/search?q=competitiveness" title=" competitiveness"> competitiveness</a>, <a href="https://publications.waset.org/abstracts/search?q=neoliberal%20regime" title=" neoliberal regime"> neoliberal regime</a>, <a href="https://publications.waset.org/abstracts/search?q=globalization" title=" globalization"> globalization</a>, <a href="https://publications.waset.org/abstracts/search?q=gross%20domestic%20product%20%28GDP%29" title=" gross domestic product (GDP)"> gross domestic product (GDP)</a>, <a href="https://publications.waset.org/abstracts/search?q=NAFTA" title=" NAFTA"> NAFTA</a>, <a href="https://publications.waset.org/abstracts/search?q=macroeconomic" title=" macroeconomic "> macroeconomic </a> </p> <a href="https://publications.waset.org/abstracts/32728/financial-analysis-of-the-foreign-direct-in-mexico" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32728.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">455</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">288</span> Contentious Politics during a Period of Transition to Democracy from an Authoritarian Regime: The Spanish Cycle of Protest of November 1975-December 1978</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juan%20Sanmart%C3%ADn%20Bastida">Juan Sanmartín Bastida</a> </p> <p class="card-text"><strong>Abstract:</strong></p> When a country experiences a period of transition from authoritarianism to democracy, involving an earlier process of political liberalization and a later process of democratization, a cycle of protest usually outbreaks, as there is a reciprocal influence between that kind of political change and the frequency and scale of social protest events. That is what happened in Spain during the first years of its transition to democracy from the Francoist authoritarian regime, roughly between November 1975 and December 1978. Thus, the object of this study is to show and explain how that cycle of protest started, developed, and finished in relation to such a political change, and offer specific information about the main features of all protest cycles: the social movements that arose during that period, the number of protest events by month, the forms of collective action that were utilized, the groups of challengers that engaged in contentious politics, the reaction of the authorities to the action and claims of those groups, etc. The study of this cycle of protest, using the primary sources and analytical tools that characterize the model of research of protest cycles, will make a contribution to the field of contentious politics and its phenomenon of cycles of contention, and more broadly to the political and social history of contemporary Spain. The cycle of protest and the process of political liberalization of the authoritarian regime began around the same time, but the first concluded long before the process of democratization was completed in 1982. The ascending phase of the cycle and therefore the process of liberalization started with the death of Francisco Franco and the proclamation of Juan Carlos I as King of Spain in November 1975; the peak of the cycle was around the first months of 1977; the descending phase started after the first general election of June 1977; and the level of protest stabilized in the last months of 1978, a year that finished with a referendum in which the Spanish people approved the current democratic constitution. It was then when we can consider that the cycle of protest came to an end. The primary sources are the news of protest events and social movements in the three main Spanish newspapers at the time, other written or audiovisual documents, and in-depth interviews; and the analytical tools are the political opportunities that encourage social protest, the available repertoire of contention, the organizations and networks that brought together people with the same claims and allowed them to engage in contentious politics, and the interpretative frames that justify, dignify and motivates their collective action. These are the main four factors that explain the beginning, development and ending of the cycle of protest, and therefore the accompanying social movements and events of collective action. Among those four factors, the political opportunities -their opening, exploitation, and closure-proved to be most decisive. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=contentious%20politics" title="contentious politics">contentious politics</a>, <a href="https://publications.waset.org/abstracts/search?q=cycles%20of%20protest" title=" cycles of protest"> cycles of protest</a>, <a href="https://publications.waset.org/abstracts/search?q=political%20opportunities" title=" political opportunities"> political opportunities</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20movements" title=" social movements"> social movements</a>, <a href="https://publications.waset.org/abstracts/search?q=Spanish%20transition%20to%20democracy" title=" Spanish transition to democracy"> Spanish transition to democracy</a> </p> <a href="https://publications.waset.org/abstracts/135616/contentious-politics-during-a-period-of-transition-to-democracy-from-an-authoritarian-regime-the-spanish-cycle-of-protest-of-november-1975-december-1978" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135616.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">143</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">287</span> VDGMSISS: A Verifiable and Detectable Multi-Secret Images Sharing Scheme with General Access Structure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Justie%20Su-Tzu%20Juan">Justie Su-Tzu Juan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming-Jheng%20Li"> Ming-Jheng Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Ching-Fen%20Lee"> Ching-Fen Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruei-Yu%20Wu"> Ruei-Yu Wu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A secret image sharing scheme is a way to protect images. The main idea is dispersing the secret image into numerous shadow images. A secret image sharing scheme can withstand the impersonal attack and achieve the highly practical property of multiuse  is more practical. Therefore, this paper proposes a verifiable and detectable secret image-sharing scheme called VDGMSISS to solve the impersonal attack and to achieve some properties such as encrypting multi-secret images at one time and multi-use. Moreover, our scheme can also be used for any genera access structure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=multi-secret%20image%20sharing%20scheme" title="multi-secret image sharing scheme">multi-secret image sharing scheme</a>, <a href="https://publications.waset.org/abstracts/search?q=verifiable" title=" verifiable"> verifiable</a>, <a href="https://publications.waset.org/abstracts/search?q=de-tectable" title=" de-tectable"> de-tectable</a>, <a href="https://publications.waset.org/abstracts/search?q=general%20access%20structure" title=" general access structure"> general access structure</a> </p> <a href="https://publications.waset.org/abstracts/118758/vdgmsiss-a-verifiable-and-detectable-multi-secret-images-sharing-scheme-with-general-access-structure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118758.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">286</span> Secondary True to Life Polyethylene Terephthalate Nanoplastics: Obtention, Characterization, and Hazard Evaluation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aliro%20Villacorta">Aliro Villacorta</a>, <a href="https://publications.waset.org/abstracts/search?q=Laura%20Rubio"> Laura Rubio</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Alaraby"> Mohamed Alaraby</a>, <a href="https://publications.waset.org/abstracts/search?q=Montserrat%20L%C3%B3pez%20Mesas"> Montserrat López Mesas</a>, <a href="https://publications.waset.org/abstracts/search?q=Victor%20Fuentes-Cebrian"> Victor Fuentes-Cebrian</a>, <a href="https://publications.waset.org/abstracts/search?q=Oscar%20H.%20Moriones"> Oscar H. Moriones</a>, <a href="https://publications.waset.org/abstracts/search?q=Ricard%20Marcos"> Ricard Marcos</a>, <a href="https://publications.waset.org/abstracts/search?q=Alba%20Hern%C3%A1ndez."> Alba Hernández.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Micro and nano plastics (MNPLs) are emergent environmental pollutants requiring urgent information on their potential risks to human health. One of the problems associated with the evaluation of their undesirable effects is the lack of real samples matching those resulting from the environmental degradation of plastic wastes. To such end, we propose an easy method to obtain polyethylene terephthalate nano plastics from water plastic bottles (PET-NPLs) but, in principle, applicable to any other plastic goods sources. An extensive characterization indicates that the proposed process produces uniform samples of PET-NPLs of around 100 nm, as determined by using a multi-angle and dynamic light scattering methodology. An important point to be highlighted is that to avoid the metal contamination resulting from methods using metal blades/burrs for milling, trituration, or sanding, we propose to use diamond burrs to produce metal-free samples. To visualize the toxicological profile of the produced PET-NPLs, we have evaluated their ability to be internalized by cells, their cytotoxicity, and their ability to induce oxidative stress and induce DNA damage. In this preliminary approach, we have detected their cellular uptake, but without the induction of significant biological effects. Thus, no relevant increases in toxicity, reactive oxygen species (ROS) induction, or DNA damage -as detected with the comet assay- have been observed. The use of real samples, as produced in this study, will generate relevant data in the discussion about the potential health risks associated with MNPLs exposures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanoplastics" title="nanoplastics">nanoplastics</a>, <a href="https://publications.waset.org/abstracts/search?q=polyethylene%20terephthalate" title=" polyethylene terephthalate"> polyethylene terephthalate</a>, <a href="https://publications.waset.org/abstracts/search?q=physicochemical%20characterization" title=" physicochemical characterization"> physicochemical characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20uptake" title=" cell uptake"> cell uptake</a>, <a href="https://publications.waset.org/abstracts/search?q=cytotoxicity" title=" cytotoxicity"> cytotoxicity</a> </p> <a href="https://publications.waset.org/abstracts/152948/secondary-true-to-life-polyethylene-terephthalate-nanoplastics-obtention-characterization-and-hazard-evaluation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152948.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">102</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">285</span> Kinetic Study of Thermal Degradation of a Lignin Nanoparticle-Reinforced Phenolic Foam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juan%20C.%20Dom%C3%ADnguez">Juan C. Domínguez</a>, <a href="https://publications.waset.org/abstracts/search?q=Bel%C3%A9n%20Del%20Saz-Orozco"> Belén Del Saz-Orozco</a>, <a href="https://publications.waset.org/abstracts/search?q=Mar%C3%ADa%20V.%20Alonso"> María V. Alonso</a>, <a href="https://publications.waset.org/abstracts/search?q=Mercedes%20Oliet"> Mercedes Oliet</a>, <a href="https://publications.waset.org/abstracts/search?q=Francisco%20Rodr%C3%ADguez"> Francisco Rodríguez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present study, the kinetics of thermal degradation of a phenolic and lignin reinforced phenolic foams, and the lignin used as reinforcement were studied and the activation energies of their degradation processes were obtained by a DAEM model. The average values for five heating rates of the mean activation energies obtained were: 99.1, 128.2, and 144.0 kJ.mol-1 for the phenolic foam, 109.5, 113.3, and 153.0 kJ.mol-1 for the lignin reinforcement, and 82.1, 106.9, and 124.4 kJ. mol-1 for the lignin reinforced phenolic foam. The standard deviation ranges calculated for each sample were 1.27-8.85, 2.22-12.82, and 3.17-8.11 kJ.mol-1 for the phenolic foam, lignin and the reinforced foam, respectively. The DAEM model showed low mean square errors (< 1x10-5), proving that is a suitable model to study the kinetics of thermal degradation of the foams and the reinforcement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=kinetics" title="kinetics">kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=lignin" title=" lignin"> lignin</a>, <a href="https://publications.waset.org/abstracts/search?q=phenolic%20foam" title=" phenolic foam"> phenolic foam</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20degradation" title=" thermal degradation"> thermal degradation</a> </p> <a href="https://publications.waset.org/abstracts/25484/kinetic-study-of-thermal-degradation-of-a-lignin-nanoparticle-reinforced-phenolic-foam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25484.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">493</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">284</span> Renewable Energy System Eolic-Photovoltaic for the Touristic Center La Tranca-Chordeleg in Ecuador</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christian%20Castro%20Samaniego">Christian Castro Samaniego</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Icaza%20Alvarez"> Daniel Icaza Alvarez</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Portoviejo%20Brito"> Juan Portoviejo Brito</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For this research work, hybrid wind-photovoltaic (SHEF) systems were considered as renewable energy sources that take advantage of wind energy and solar radiation to transform into electrical energy. In the present research work, the feasibility of a wind-photovoltaic hybrid generation system was analyzed for the La Tranca tourist viewpoint of the Chordeleg canton in Ecuador. The research process consisted of the collection of data on solar radiation, temperature, wind speed among others by means of a meteorological station. Simulations were carried out in MATLAB/Simulink based on a mathematical model. In the end, we compared the theoretical radiation-power curves and the measurements made at the site. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hybrid%20system" title="hybrid system">hybrid system</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20turbine" title=" wind turbine"> wind turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=validation" title=" validation"> validation</a>, <a href="https://publications.waset.org/abstracts/search?q=experimental%20data" title=" experimental data"> experimental data</a>, <a href="https://publications.waset.org/abstracts/search?q=panel" title=" panel"> panel</a>, <a href="https://publications.waset.org/abstracts/search?q=Ecuador" title=" Ecuador"> Ecuador</a> </p> <a href="https://publications.waset.org/abstracts/88903/renewable-energy-system-eolic-photovoltaic-for-the-touristic-center-la-tranca-chordeleg-in-ecuador" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88903.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">249</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">283</span> A Petri Net Model to Obtain the Throughput of Unreliable Production Lines in the Buffer Allocation Problem</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joselito%20Medina-Marin">Joselito Medina-Marin</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandr%20Karelin"> Alexandr Karelin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ana%20Tarasenko"> Ana Tarasenko</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Carlos%20Seck-Tuoh-Mora"> Juan Carlos Seck-Tuoh-Mora</a>, <a href="https://publications.waset.org/abstracts/search?q=Norberto%20Hernandez-Romero"> Norberto Hernandez-Romero</a>, <a href="https://publications.waset.org/abstracts/search?q=Eva%20Selene%20Hernandez-Gress"> Eva Selene Hernandez-Gress</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A production line designer faces with several challenges in manufacturing system design. One of them is the assignment of buffer slots in between every machine of the production line in order to maximize the throughput of the whole line, which is known as the Buffer Allocation Problem (BAP). The BAP is a combinatorial problem that depends on the number of machines and the total number of slots to be distributed on the production line. In this paper, we are proposing a Petri Net (PN) Model to obtain the throughput in unreliable production lines, based on PN mathematical tools and the decomposition method. The results obtained by this methodology are similar to those presented in previous works, and the number of machines is not a hard restriction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=buffer%20allocation%20problem" title="buffer allocation problem">buffer allocation problem</a>, <a href="https://publications.waset.org/abstracts/search?q=Petri%20Nets" title=" Petri Nets"> Petri Nets</a>, <a href="https://publications.waset.org/abstracts/search?q=throughput" title=" throughput"> throughput</a>, <a href="https://publications.waset.org/abstracts/search?q=production%20lines" title=" production lines"> production lines</a> </p> <a href="https://publications.waset.org/abstracts/79811/a-petri-net-model-to-obtain-the-throughput-of-unreliable-production-lines-in-the-buffer-allocation-problem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79811.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">314</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">282</span> Gender and Hostile Behavior: An Experimental Study Using the Hawk-Dove Game</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ruggero%20Roni">Ruggero Roni</a>, <a href="https://publications.waset.org/abstracts/search?q=Ennio%20Bilancini"> Ennio Bilancini</a>, <a href="https://publications.waset.org/abstracts/search?q=Erica%20Ordali"> Erica Ordali</a>, <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Marcos%20Prieto"> Pablo Marcos Prieto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, we examine the behavioral patterns underlying social conflicts, focusing on gender and gender pairing effects on hostile behavior. While gender differences in willingness to compete are well-documented, we aim to study whether these differences persist once individuals are already engaged in competition. On top of this, we investigate if the gender of the opponent(s) may interact with one's own gender. Using a one-shot Hawk-Dove game with varying levels of harshness, i.e., cost of conflict, we will conduct an experiment in which we will manipulate two factors in a between-subject design: order of play (simultaneous, sequential first mover, sequential second mover) and gender pairing (anonymous, same gender, opposite gender). This setting will permit us to model competitive relationships over limited resources, thus interpreting the ‘hawk’ strategy as a proxy for hostile behavior. Data collection is currently under process. Based on our pre-registered hypotheses, we expect males and same-gender couples to behave more hostilely than females and opposite-gender couples, respectively. Moreover, we expect males to show more negative reciprocity while we predict females to exhibit more positive reciprocity toward their opponents. Lastly, we suspect that females' predisposition to conflict, unlike males', might be affected by the strategic context, instrumentalized through the harshness of conflict and the order of play. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hawk-dove" title="hawk-dove">hawk-dove</a>, <a href="https://publications.waset.org/abstracts/search?q=order%20of%20play" title=" order of play"> order of play</a>, <a href="https://publications.waset.org/abstracts/search?q=gender" title=" gender"> gender</a>, <a href="https://publications.waset.org/abstracts/search?q=gender%20pairing" title=" gender pairing"> gender pairing</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20conflict" title=" social conflict"> social conflict</a>, <a href="https://publications.waset.org/abstracts/search?q=hostile%20behavior" title=" hostile behavior"> hostile behavior</a>, <a href="https://publications.waset.org/abstracts/search?q=online%20experiment" title=" online experiment"> online experiment</a> </p> <a href="https://publications.waset.org/abstracts/195609/gender-and-hostile-behavior-an-experimental-study-using-the-hawk-dove-game" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/195609.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">20</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">281</span> High Accuracy Analytic Approximation for Special Functions Applied to Bessel Functions J₀(x) and Its Zeros</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fernando%20Maass">Fernando Maass</a>, <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Martin"> Pablo Martin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Olivares"> Jorge Olivares</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Bessel function J₀(x) is very important in Electrodynamics and Physics, as well as its zeros. In this work, a method to obtain high accuracy approximation is presented through an application to that function. In most of the applications of this function, the values of the zeros are very important. In this work, analytic approximations for this function have been obtained valid for all positive values of the variable x, which have high accuracy for the function as well as for the zeros. The approximation is determined by the simultaneous used of the power series and asymptotic expansion. The structure of the approximation is a combination of two rational functions with elementary functions as trigonometric and fractional powers. Here us in Pade method, rational functions are used, but now there combined with elementary functions us fractional powers hyperbolic or trigonometric functions, and others. The reason of this is that now power series of the exact function are used, but together with the asymptotic expansion, which usually includes fractional powers trigonometric functions and other type of elementary functions. The approximation must be a bridge between both expansions, and this can not be accomplished using only with rational functions. In the simplest approximation using 4 parameters the maximum absolute error is less than 0.006 at x ∼ 4.9. In this case also the maximum relative error for the zeros is less than 0.003 which is for the second zero, but that value decreases rapidly for the other zeros. The same kind of behaviour happens for the relative error of the maximum and minimum of the functions. Approximations with higher accuracy and more parameters will be also shown. All the approximations are valid for any positive value of x, and they can be calculated easily. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=analytic%20approximations" title="analytic approximations">analytic approximations</a>, <a href="https://publications.waset.org/abstracts/search?q=asymptotic%20approximations" title=" asymptotic approximations"> asymptotic approximations</a>, <a href="https://publications.waset.org/abstracts/search?q=Bessel%20functions" title=" Bessel functions"> Bessel functions</a>, <a href="https://publications.waset.org/abstracts/search?q=quasirational%20approximations" title=" quasirational approximations"> quasirational approximations</a> </p> <a href="https://publications.waset.org/abstracts/92867/high-accuracy-analytic-approximation-for-special-functions-applied-to-bessel-functions-j0x-and-its-zeros" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92867.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">259</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">280</span> Microstructural and Magnetic Properties of Ni50Mn39Sn11 and Ni50Mn36Sn14 Heusler Alloys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mst%20Nazmunnahar">Mst Nazmunnahar</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20del%20Val"> Juan del Val</a>, <a href="https://publications.waset.org/abstracts/search?q=Alena%20Vimmrova"> Alena Vimmrova</a>, <a href="https://publications.waset.org/abstracts/search?q=Blanca%20Hernando"> Blanca Hernando</a>, <a href="https://publications.waset.org/abstracts/search?q=Julian%20Gonz%C3%A1lez"> Julian González</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We report the microstructural and magnetic properties of Ni50Mn39Sn11 and Ni50Mn36Sn14 ribbon Heusler alloys. Experimental results were obtained by differential scanning calorymetry, X-ray diffraction and vibrating sample magnetometry techniques. The Ni-Mn-Sn system undergoes a martensitic structural transformation in a wide temperature range. For example, for Ni50Mn39Sn11 the start and finish temperatures of the martensitic and austenite phase transformation for ribbon alloy were Ms = 336K , Mf = 328K, As = 335K and Af = 343K whereas no structural transformation is observed for Ni50Mn36Sn14 alloys. Magnetic measurements show the typical ferromagnetic behavior with Curie temperature 207K at low applied field of 50 Oe. The complex behavior exhibited by these Heusler alloys should be ascribed to the strong coupling between magnetism and structure, being their magnetic behavior determined by the distance between Mn atoms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=as-cast%20ribbon" title="as-cast ribbon">as-cast ribbon</a>, <a href="https://publications.waset.org/abstracts/search?q=Heusler%20alloys" title=" Heusler alloys"> Heusler alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20properties" title=" magnetic properties"> magnetic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20transformation" title=" structural transformation"> structural transformation</a> </p> <a href="https://publications.waset.org/abstracts/23193/microstructural-and-magnetic-properties-of-ni50mn39sn11-and-ni50mn36sn14-heusler-alloys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23193.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">462</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">279</span> Extraction, Characterization, and Applicability of Rich β-Glucan Fractions from Fungal Biomass</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zaida%20Perez-Bassart">Zaida Perez-Bassart</a>, <a href="https://publications.waset.org/abstracts/search?q=Berta%20Polanco-Estibalez"> Berta Polanco-Estibalez</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Jose%20Fabra"> Maria Jose Fabra</a>, <a href="https://publications.waset.org/abstracts/search?q=Amparo%20Lopez-Rubio"> Amparo Lopez-Rubio</a>, <a href="https://publications.waset.org/abstracts/search?q=Antonio%20Martinez-Abad"> Antonio Martinez-Abad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mushroom production has enormously increased in recent years, not only as food products but also for applications in pharmaceuticals, nutraceuticals, and cosmetics. Consequently, interest in its chemical composition, nutritional value, and therapeutic properties has also increased. Fungi are rich in bioactive compounds such as polysaccharides, polyphenols, glycopeptides, and ergosterol, of great medicinal value, but within polysaccharides, β-glucans are the most prominent molecules. They are formed by D-glucose monomers, linked by β-glucosidic bonds β-(1,3) with side chains linked by β-(1,6) bonds. The number and position of the β-(1,6) branches strongly influence the arrangement of the tertiary structure, which, together with the molecular weight, determine the different attributed bioactivities (immunostimulating, anticancer, antimicrobial, prebiotic, etc.) and physico-chemical properties (solubility, bioaccessibility, viscosity or emulsifying). On the other hand, there is a growing interest in the study of fungi as an alternative source of chitin obtained from the by-products of the fungal industry. In this work, a cascade extraction process using aqueous neutral and alkaline treatments was carried out for Grifola frondosa and Lentinula edodes, and the compositional analysis and functional properties of each fraction were characterized. Interestingly, the first fraction obtained by using aqueous treatment at room temperature was the richest in polysaccharides, proteins, and polyphenols, thus obtaining a greater antioxidant capacity than in the other fractions. In contrast, the fractions obtained by alkaline treatments showed a higher degree of β-glucans purification compared to aqueous extractions but a lower extraction yield. Results revealed the different structural recalcitrance of β-glucans, preferentially linked to proteins or chitin depending on the fungus type, which had a direct impact on the functionalities and bioactivities of each fraction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fungi" title="fungi">fungi</a>, <a href="https://publications.waset.org/abstracts/search?q=mushroom" title=" mushroom"> mushroom</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B2-glucans" title=" β-glucans"> β-glucans</a>, <a href="https://publications.waset.org/abstracts/search?q=chitin" title=" chitin"> chitin</a> </p> <a href="https://publications.waset.org/abstracts/128677/extraction-characterization-and-applicability-of-rich-v-glucan-fractions-from-fungal-biomass" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128677.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">140</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">278</span> Greenhouse Gas Emissions from a Tropical Eutrophic Freshwater Wetland</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juan%20P.%20Silva">Juan P. Silva</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20R.%20Canchala"> T. R. Canchala</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20J.%20Lubberding"> H. J. Lubberding</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20J.%20Pe%C3%B1a"> E. J. Peña</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20J.%20Gijzen"> H. J. Gijzen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study measured the fluxes of greenhouse gases (GHGs) i.e. CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O from a tropical eutrophic freshwater wetland (“Sonso Lagoon”) which receives input loading nutrient from several sources i.e. agricultural run-off, domestic sewage, and a polluted river. The flux measurements were carried out at four different points using the static chamber technique. CO<sub>2</sub> fluxes ranged from -8270 to 12210 mg.m<sup>-2</sup>.d<sup>-1</sup> (median = 360; SD = 4.11; n = 50), CH<sub>4</sub> ranged between 0.2 and 5270 mg.m<sup>-2</sup>.d<sup>-1</sup> (median = 60; SD = 1.27; n = 45), and N<sub>2</sub>O ranged from -31.12 to 15.4 mg N<sub>2</sub>O m<sup>-2</sup>.d<sup>-1</sup> (median = 0.05; SD = 9.36; n = 42). Although some negative fluxes were observed in the zone dominated by floating plants i.e. <em>Eichornia crassipes, Salvinia </em>sp<em>.</em>, and <em>Pistia stratiotes </em>L., the mean values indicated that the Sonso Lagoon was a net source of CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O. In addition, an effect of the eutrophication on GHG emissions could be observed in the positive correlation found between CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O generation and COD, PO<sub>4</sub><sup>-3</sup>, NH<sub>3</sub>-N, TN and NO<sub>3</sub><sup>-</sup>N. The eutrophication impact on GHG production highlights the necessity to limit the anthropic activities on freshwater wetlands. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eutrophication" title="eutrophication">eutrophication</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20gas%20emissions" title=" greenhouse gas emissions"> greenhouse gas emissions</a>, <a href="https://publications.waset.org/abstracts/search?q=freshwater%20wetlands" title=" freshwater wetlands"> freshwater wetlands</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change" title=" climate change"> climate change</a> </p> <a href="https://publications.waset.org/abstracts/43499/greenhouse-gas-emissions-from-a-tropical-eutrophic-freshwater-wetland" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43499.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">365</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">277</span> Analysis of Preferences in Decision Making in a Bilateral Negotiation Context: An Experimental Approach from Game Theory</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Laura%20V.%20Gonzalez">Laura V. Gonzalez</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20B.%20Duarte"> Juan B. Duarte</a>, <a href="https://publications.waset.org/abstracts/search?q=Luis%20A.%20Palacio"> Luis A. Palacio</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Decision making can be conditioned by factors such as the environments, circumstances, behavioral biases, emotions, beliefs and preferences of the participants. The objective of this paper is to analyze the effect ‘amount of information’ and ‘number of options’, on the behavior of competitors under a bilateral negotiation context. For the above, it has been designed an experiment as a classroom game where they negotiate goods, under the condition that none of the players knows exactly the real value of the asset. The game is designed under the concept of zero-sum (non-cooperative game) and focuses on the fact that agents must anticipate the strategies of their opponent to improve their chances of winning in the negotiation. The empirical results show that, contrary to the traditional view of expected utility theory, players prefer to obtain low profits and losses, when faced with a higher expectation of losses, using sub-optimal strategies not in accordance with game theory. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bilateral%20negotiation" title="bilateral negotiation">bilateral negotiation</a>, <a href="https://publications.waset.org/abstracts/search?q=classroom%20game" title=" classroom game"> classroom game</a>, <a href="https://publications.waset.org/abstracts/search?q=decision%20making" title=" decision making"> decision making</a>, <a href="https://publications.waset.org/abstracts/search?q=game%20theory" title=" game theory"> game theory</a> </p> <a href="https://publications.waset.org/abstracts/87095/analysis-of-preferences-in-decision-making-in-a-bilateral-negotiation-context-an-experimental-approach-from-game-theory" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87095.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">272</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">276</span> Pollution Associated with Combustion in Stove to Firewood (Eucalyptus) and Pellet (Radiate Pine): Effect of UVA Irradiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Y.%20V%C3%A1squez">Y. Vásquez</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Reyes"> F. Reyes</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Oyola"> P. Oyola</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Rubio"> M. Rubio</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Mu%C3%B1oz"> J. Muñoz</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Lissi"> E. Lissi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In several cities in Chile, there is significant urban pollution, particularly in Santiago and in cities in the south where biomass is used as fuel in heating and cooking in a large proportion of homes. This has generated interest in knowing what factors can be modulated to control the level of pollution. In this project was conditioned and set up a photochemical chamber (14m3) equipped with gas monitors e.g. CO, NOX, O3, others and PM monitors e.g. dustrack, DMPS, Harvard impactors, etc. This volume could be exposed to UVA lamps, producing a spectrum similar to that generated by the sun. In this chamber, PM and gas emissions associated with biomass burning were studied in the presence and absence of radiation. From the comparative analysis of wood stove (eucalyptus globulus) and pellet (radiata pine), it can be concluded that, in the first approximation, 9-nitroanthracene, 4-nitropyrene, levoglucosan, water soluble potassium and CO present characteristics of the tracers. However, some of them show properties that interfere with this possibility. For example, levoglucosan is decomposed by radiation. The 9-nitroanthracene, 4-nitropyrene are emitted and formed under radiation. The 9-nitroanthracene has a vapor pressure that involves a partition involving the gas phase and particulate matter. From this analysis, it can be concluded that K+ is compound that meets the properties known to be tracer. The PM2.5 emission measured in the automatic pellet stove that was used in this thesis project was two orders of magnitude smaller than that registered by the manual wood stove. This has led to encouraging the use of pellet stoves in indoor heating, particularly in south-central Chile. However, it should be considered, while the use of pellet is not without problems, due to pellet stove generate high concentrations of Nitro-HAP's (secondary organic contaminants). In particular, 4-nitropyrene, compound of high toxicity, also primary and secondary particulate matter, associated with pellet burning produce a decrease in the size distribution of the PM, which leads to a depth penetration of the particles and their toxic components in the respiratory system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass%20burning" title="biomass burning">biomass burning</a>, <a href="https://publications.waset.org/abstracts/search?q=photochemical%20chamber" title=" photochemical chamber"> photochemical chamber</a>, <a href="https://publications.waset.org/abstracts/search?q=particulate%20matter" title=" particulate matter"> particulate matter</a>, <a href="https://publications.waset.org/abstracts/search?q=tracers" title=" tracers"> tracers</a> </p> <a href="https://publications.waset.org/abstracts/73231/pollution-associated-with-combustion-in-stove-to-firewood-eucalyptus-and-pellet-radiate-pine-effect-of-uva-irradiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73231.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">198</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">275</span> Ion Thruster Grid Lifetime Assessment Based on Its Structural Failure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juan%20Li">Juan Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiawen%20Qiu"> Jiawen Qiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuchuan%20Chu"> Yuchuan Chu</a>, <a href="https://publications.waset.org/abstracts/search?q=Tianping%20Zhang"> Tianping Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Meng"> Wei Meng</a>, <a href="https://publications.waset.org/abstracts/search?q=Yanhui%20Jia"> Yanhui Jia</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaohui%20Liu"> Xiaohui Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article developed an ion thruster optic system sputter erosion depth numerical 3D model by IFE-PIC (Immersed Finite Element-Particle-in-Cell) and Mont Carlo method, and calculated the downstream surface sputter erosion rate of accelerator grid; Compared with LIPS-200 life test data, the results of the numerical model are in reasonable agreement with the measured data. Finally, we predict the lifetime of the 20cm diameter ion thruster via the erosion data obtained with the model. The ultimate result demonstrates that under normal operating condition, the erosion rate of the grooves wears on the downstream surface of the accelerator grid is 34.6μm⁄1000h, which means the conservative lifetime until structural failure occurring on the accelerator grid is 11500 hours. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ion%20thruster" title="ion thruster">ion thruster</a>, <a href="https://publications.waset.org/abstracts/search?q=accelerator%20gird" title=" accelerator gird"> accelerator gird</a>, <a href="https://publications.waset.org/abstracts/search?q=sputter%20erosion" title=" sputter erosion"> sputter erosion</a>, <a href="https://publications.waset.org/abstracts/search?q=lifetime%20assessment" title=" lifetime assessment"> lifetime assessment</a> </p> <a href="https://publications.waset.org/abstracts/33020/ion-thruster-grid-lifetime-assessment-based-on-its-structural-failure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33020.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">572</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">274</span> Current Status of 5A Lab6 Hollow Cathode Life Tests in Lanzhou Institute of Physics, China </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yanhui%20Jia">Yanhui Jia</a>, <a href="https://publications.waset.org/abstracts/search?q=Ning%20Guo"> Ning Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Li"> Juan Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Yunkui%20Sun"> Yunkui Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Yang"> Wei Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tianping%20Zhang"> Tianping Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Lin%20Ma"> Lin Ma</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Meng"> Wei Meng</a>, <a href="https://publications.waset.org/abstracts/search?q=Hai%20Geng"> Hai Geng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current statuses of lifetime test of LaB6 hollow cathode at the Lanzhou institute of physics (LIP), China, was described. 5A LaB6 hollow cathode was designed for LIPS-200 40mN Xenon ion thruster and it could be used for LHT-100 80 mN Hall thruster, too. Life test of the discharge and neutralizer modes of LHC-5 hollow cathode were stared in October 2011, and cumulative operation time reached 17,300 and 16,100 hours in April 2015, respectively. The life of cathode was designed more than 11,000 hours. Parameters of discharge and key structure dimensions were monitored in different stage of life test indicated that cathodes were health enough. The test will continue until the cathode cannot work or operation parameter is not in normally. The result of the endurance test of cathode demonstrated that the LaB6 hollow cathode is satisfied for the required of thruster in life and performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LaB6" title="LaB6">LaB6</a>, <a href="https://publications.waset.org/abstracts/search?q=hollow%20cathode" title=" hollow cathode"> hollow cathode</a>, <a href="https://publications.waset.org/abstracts/search?q=thruster" title=" thruster"> thruster</a>, <a href="https://publications.waset.org/abstracts/search?q=lifetime%20test" title=" lifetime test"> lifetime test</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20propulsion" title=" electric propulsion"> electric propulsion</a> </p> <a href="https://publications.waset.org/abstracts/32964/current-status-of-5a-lab6-hollow-cathode-life-tests-in-lanzhou-institute-of-physics-china" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32964.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">616</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">273</span> Modeling and Simulation of Flow Shop Scheduling Problem through Petri Net Tools</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joselito%20Medina%20Marin">Joselito Medina Marin</a>, <a href="https://publications.waset.org/abstracts/search?q=Norberto%20Hern%C3%A1ndez%20Romero"> Norberto Hernández Romero</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Carlos%20Seck%20Tuoh%20Mora"> Juan Carlos Seck Tuoh Mora</a>, <a href="https://publications.waset.org/abstracts/search?q=Erick%20S.%20Martinez%20Gomez"> Erick S. Martinez Gomez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Flow Shop Scheduling Problem (FSSP) is a typical problem that is faced by production planning managers in Flexible Manufacturing Systems (FMS). This problem consists in finding the optimal scheduling to carry out a set of jobs, which are processed in a set of machines or shared resources. Moreover, all the jobs are processed in the same machine sequence. As in all the scheduling problems, the makespan can be obtained by drawing the Gantt chart according to the operations order, among other alternatives. On this way, an FMS presenting the FSSP can be modeled by Petri nets (PNs), which are a powerful tool that has been used to model and analyze discrete event systems. Then, the makespan can be obtained by simulating the PN through the token game animation and incidence matrix. In this work, we present an adaptive PN to obtain the makespan of FSSP by applying PN analytical tools. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flow-shop%20scheduling%20problem" title="flow-shop scheduling problem">flow-shop scheduling problem</a>, <a href="https://publications.waset.org/abstracts/search?q=makespan" title=" makespan"> makespan</a>, <a href="https://publications.waset.org/abstracts/search?q=Petri%20nets" title=" Petri nets"> Petri nets</a>, <a href="https://publications.waset.org/abstracts/search?q=state%20equation" title=" state equation"> state equation</a> </p> <a href="https://publications.waset.org/abstracts/48746/modeling-and-simulation-of-flow-shop-scheduling-problem-through-petri-net-tools" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48746.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">304</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">272</span> High Accuracy Analytic Approximations for Modified Bessel Functions I₀(x)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Martin">Pablo Martin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Olivares"> Jorge Olivares</a>, <a href="https://publications.waset.org/abstracts/search?q=Fernando%20Maass"> Fernando Maass</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A method to obtain analytic approximations for special function of interest in engineering and physics is described here. Each approximate function will be valid for every positive value of the variable and accuracy will be high and increasing with the number of parameters to determine. The general technique will be shown through an application to the modified Bessel function of order zero, I₀(x). The form and the calculation of the parameters are performed with the simultaneous use of the power series and asymptotic expansion. As in Padé method rational functions are used, but now they are combined with other elementary functions as; fractional powers, hyperbolic, trigonometric and exponential functions, and others. The elementary function is determined, considering that the approximate function should be a bridge between the power series and the asymptotic expansion. In the case of the I₀(x) function two analytic approximations have been already determined. The simplest one is (1+x²/4)⁻¹/⁴(1+0.24273x²) cosh(x)/(1+0.43023x²). The parameters of I₀(x) were determined using the leading term of the asymptotic expansion and two coefficients of the power series, and the maximum relative error is 0.05. In a second case, two terms of the asymptotic expansion were used and 4 of the power series and the maximum relative error is 0.001 at x≈9.5. Approximations with much higher accuracy will be also shown. In conclusion a new technique is described to obtain analytic approximations to some functions of interest in sciences, such that they have a high accuracy, they are valid for every positive value of the variable, they can be integrated and differentiated as the usual, functions, and furthermore they can be calculated easily even with a regular pocket calculator. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=analytic%20approximations" title="analytic approximations">analytic approximations</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical-physics%20applications" title=" mathematical-physics applications"> mathematical-physics applications</a>, <a href="https://publications.waset.org/abstracts/search?q=quasi-rational%20functions" title=" quasi-rational functions"> quasi-rational functions</a>, <a href="https://publications.waset.org/abstracts/search?q=special%20functions" title=" special functions"> special functions</a> </p> <a href="https://publications.waset.org/abstracts/77484/high-accuracy-analytic-approximations-for-modified-bessel-functions-i0x" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/77484.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">257</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">271</span> Innovation in Information Technology Services: Framework to Improve the Effectiveness and Efficiency of Information Technology Service Management Processes, Projects and Decision Support Management </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Cardozo%20Herrera">Pablo Cardozo Herrera</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In a dynamic market of Information Technology (IT) Service and with high quality demands and high performance requirements in decreasing costs, it is imperative that IT companies invest organizational effort in order to increase the effectiveness of their Information Technology Service Management (ITSM) processes through the improvement of ITSM project management and through solid support to the strategic decision-making process of IT directors. In this article, the author presents an analysis of common issues of IT companies around the world, with strategic needs of information unmet that provoke their ITSM processes and projects management that do not achieve the effectiveness and efficiency expected of their results. In response to the issues raised, the author proposes a framework consisting of an innovative theoretical framework model of ITSM management and a technological solution aligned to the Information Technology Infrastructure Library (ITIL) good practices guidance and ISO/IEC 20000-1 requirements. The article describes a research that proves the proposed framework is able to integrate, manage and coordinate in a holistic way, measurable and auditable, all ITSM processes and projects of IT organization and utilize the effectiveness assessment achieved for their strategic decision-making process increasing the process maturity level and improving the capacity of an efficient management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=innovation%20in%20IT%20services" title="innovation in IT services">innovation in IT services</a>, <a href="https://publications.waset.org/abstracts/search?q=ITSM%20processes" title=" ITSM processes"> ITSM processes</a>, <a href="https://publications.waset.org/abstracts/search?q=ITIL%20and%20ISO%2FIEC%2020000-1" title=" ITIL and ISO/IEC 20000-1"> ITIL and ISO/IEC 20000-1</a>, <a href="https://publications.waset.org/abstracts/search?q=IT%20service%20management" title=" IT service management"> IT service management</a>, <a href="https://publications.waset.org/abstracts/search?q=IT%20service%20excellence" title=" IT service excellence"> IT service excellence</a> </p> <a href="https://publications.waset.org/abstracts/74112/innovation-in-information-technology-services-framework-to-improve-the-effectiveness-and-efficiency-of-information-technology-service-management-processes-projects-and-decision-support-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74112.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">400</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">270</span> An Open Loop Distribution Module for Precise and Uniform Drip Fertigation in Soilless Culture</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juan%20Ignacio%20Arango">Juan Ignacio Arango</a>, <a href="https://publications.waset.org/abstracts/search?q=Andres%20Diaz"> Andres Diaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Giacomo%20Barbieri"> Giacomo Barbieri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In soilless culture, the definition of efficient fertigation strategies is fundamental for the growth of crops. Flexible test-benches able to independently manage groups of crops are key for investigating efficient fertigation practices through experimentation. These test-benches must be able to provide nutrient solution (NS) in a precise, uniform and repeatable way in order to effectively implement and compare different fertigation strategies. This article describes a distribution module for investigating fertigation practices able to control the fertigation dose and frequency. The proposed solution is characterized in terms of precision, uniformity and repeatability since these parameters are fundamental in the implementation of effective experiments for the investigation of fertigation practices. After a calibration process, the implemented system reaches a precision of 1mL, a uniformity of 98.5% at a total cost of 735USD. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=recision%20horticulture" title="recision horticulture">recision horticulture</a>, <a href="https://publications.waset.org/abstracts/search?q=test-bench" title=" test-bench"> test-bench</a>, <a href="https://publications.waset.org/abstracts/search?q=fertigation%20strategy" title=" fertigation strategy"> fertigation strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=automation" title=" automation"> automation</a>, <a href="https://publications.waset.org/abstracts/search?q=flexibility" title=" flexibility"> flexibility</a> </p> <a href="https://publications.waset.org/abstracts/113536/an-open-loop-distribution-module-for-precise-and-uniform-drip-fertigation-in-soilless-culture" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/113536.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">144</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">269</span> A Dream to Bicycle: A Curriculum Practice of Thematic Teaching Constructed by Scaffolding Theory</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gu%20Chun-Mei">Gu Chun-Mei</a>, <a href="https://publications.waset.org/abstracts/search?q=Kung%20Mei-Juan"> Kung Mei-Juan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this research is to examine (1) how a kindergarten teacher followed the scaffolding theory to inspire children’s interest in bicycling and (2) how these children had learned the skill of bicycling. Results revealed that: first of all, the teacher (1) used questions during the teaching process to stimulate the levels of children’s abilities; (2) provided follow-up thematic clues and hints which are based on children’s abilities (e.g., would not provide instructions and demonstrations except children continued failing to solve the current problems); (3) assisted only when children needed it. Furthermore, when children continued failing the task and being frustrated, instead of providing more concrete guidance, the teacher would utilize the following strategies: (1) postulating children’s thoughts; (2) encouraging children to feel the difficulties; (3) giving children opportunities to reflect on how to solve the problems. In sum, by raising questions, allowing children to implement by themselves for the first attempt, then inducing children to correct their actions, the teacher built a scaffold with thematic teaching to develop children’s potential on bicycling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thematic%20teaching" title="thematic teaching">thematic teaching</a>, <a href="https://publications.waset.org/abstracts/search?q=scaffold" title=" scaffold"> scaffold</a>, <a href="https://publications.waset.org/abstracts/search?q=zone%20of%20proximal%20development" title=" zone of proximal development"> zone of proximal development</a>, <a href="https://publications.waset.org/abstracts/search?q=children" title=" children"> children</a> </p> <a href="https://publications.waset.org/abstracts/129248/a-dream-to-bicycle-a-curriculum-practice-of-thematic-teaching-constructed-by-scaffolding-theory" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129248.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">199</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">268</span> Internationalization Using Strategic Alliances: A Comparative Study between Family and Non-Family Businesses</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Guadalupe%20Fuentes-Lombardo">Guadalupe Fuentes-Lombardo</a>, <a href="https://publications.waset.org/abstracts/search?q=Manuel%20Carlos%20Vallejo-Martos"> Manuel Carlos Vallejo-Martos</a>, <a href="https://publications.waset.org/abstracts/search?q=Rub%C3%A9n%20Fern%C3%A1ndez-Ortiz"> Rubén Fernández-Ortiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Miriam%20Cano-Rubio"> Miriam Cano-Rubio</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The different ways in which companies enter foreign markets, exporting their products and direct investment and using strategic alliances or not, are influenced by a series of peculiarities specific to family businesses. In these companies, different systems, such as the family, property, and business overlap; giving them unique and specific characteristics which on occasions can enhance the development of cooperation agreements and in other situations can hinder them. Previous research has shown that these companies are more likely to enter into strategic alliances with certain specific features, and are more reluctant to take part in others in which some of the advantages of the family business are put at risk, such as control of ownership and decision-making over the company by the family, among others. These arguments show that there is a wide range of interesting aspects and peculiarities in the process of internationalization of the family business, although the research objectives of this paper focus on three in particular. Our first objective will be to discover why family businesses decide to establish or not strategic alliances in their internationalization processes in comparison with other companies that are not family owned. Secondly we will be identifying the idiosyncratic aspects of family businesses that favor or hinder the use of strategic alliances as a means of entering foreign markets. Our third and final objective will be to define the types of strategic alliance most commonly used by family businesses and the reasons why they choose these particular forms of alliance rather than others. We chose these research objectives for three main reasons. Firstly because research on this subject shows that alliances are the best way to begin the international expansion process, among other reasons because they provide the partners with different kinds of resources and capacity, so increasing the probability of successful internationalization. Secondly, because family and non-family businesses are often equipped with different types of resources and strategic alliances, offer them the chance to acquire resources less frequently found in family businesses. Thirdly, because the strengths and weaknesses of these companies could affect their decisions whether or not to use strategic alliances in their international expansion process and the success achieved in these alliances. As a result, these companies prefer to enter into cooperation agreements with conditions that do not put their specific status as family companies at risk. <p class="card-text"><strong>Keywords:</strong> <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=internationalization" title=" internationalization"> internationalization</a>, <a href="https://publications.waset.org/abstracts/search?q=strategic%20alliances" title=" strategic alliances"> strategic alliances</a>, <a href="https://publications.waset.org/abstracts/search?q=olive-oil%20and%20wine%20industry" title=" olive-oil and wine industry"> olive-oil and wine industry</a> </p> <a href="https://publications.waset.org/abstracts/15142/internationalization-using-strategic-alliances-a-comparative-study-between-family-and-non-family-businesses" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15142.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">454</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">267</span> Risk Analysis of Leaks from a Subsea Oil Facility Based on Fuzzy Logic Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bel%C3%A9n%20Vinaixa%20Kinnear">Belén Vinaixa Kinnear</a>, <a href="https://publications.waset.org/abstracts/search?q=Arturo%20Hidalgo%20L%C3%B3pez"> Arturo Hidalgo López</a>, <a href="https://publications.waset.org/abstracts/search?q=Bernardo%20Elembo%20Wilasi"> Bernardo Elembo Wilasi</a>, <a href="https://publications.waset.org/abstracts/search?q=Pablo%20Fern%C3%A1ndez%20P%C3%A9rez"> Pablo Fernández Pérez</a>, <a href="https://publications.waset.org/abstracts/search?q=Cecilia%20Hern%C3%A1ndez%20Fuentealba"> Cecilia Hernández Fuentealba</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The expanded use of risk assessment in legislative and corporate decision-making has increased the role of expert judgement in giving data for security-related decision-making. Expert judgements are required in most steps of risk assessment: danger recognizable proof, hazard estimation, risk evaluation, and examination of choices. This paper presents a fault tree analysis (FTA), which implies a probabilistic failure analysis applied to leakage of oil in a subsea production system. In standard FTA, the failure probabilities of items of a framework are treated as exact values while evaluating the failure probability of the top event. There is continuously insuﬃciency of data for calculating the failure estimation of components within the drilling industry. Therefore, fuzzy hypothesis can be used as a solution to solve the issue. The aim of this paper is to examine the leaks from the Zafiro West subsea oil facility by using fuzzy fault tree analysis (FFTA). As a result, the research has given theoretical and practical contributions to maritime safety and environmental protection. It has been also an effective strategy used traditionally in identifying hazards in nuclear installations and power industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=expert%20judgment" title="expert judgment">expert judgment</a>, <a href="https://publications.waset.org/abstracts/search?q=probability%20assessment" title=" probability assessment"> probability assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=fault%20tree%20analysis" title=" fault tree analysis"> fault tree analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20analysis" title=" risk analysis"> risk analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20%20pipelines" title=" oil pipelines"> oil pipelines</a>, <a href="https://publications.waset.org/abstracts/search?q=subsea%20production%20system" title=" subsea production system"> subsea production system</a>, <a href="https://publications.waset.org/abstracts/search?q=drilling" title=" drilling"> drilling</a>, <a href="https://publications.waset.org/abstracts/search?q=quantitative%20risk%20analysis" title=" quantitative risk analysis"> quantitative risk analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=leakage%20failure" title=" leakage failure"> leakage failure</a>, <a href="https://publications.waset.org/abstracts/search?q=top%20event" title=" top event"> top event</a>, <a href="https://publications.waset.org/abstracts/search?q=off-shore%20industry" title=" off-shore industry"> off-shore industry</a> </p> <a href="https://publications.waset.org/abstracts/141591/risk-analysis-of-leaks-from-a-subsea-oil-facility-based-on-fuzzy-logic-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141591.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">196</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">266</span> Microbiological Analysis, Cytotoxic and Genotoxic Effects from Material Captured in PM2.5 and PM10 Filters Used in the Aburrá Valley Air Quality Monitoring Network (Colombia)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Carmen%20E.%20Zapata">Carmen E. Zapata</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Bautista"> Juan Bautista</a>, <a href="https://publications.waset.org/abstracts/search?q=Olga%20Montoya"> Olga Montoya</a>, <a href="https://publications.waset.org/abstracts/search?q=Claudia%20Moreno"> Claudia Moreno</a>, <a href="https://publications.waset.org/abstracts/search?q=Marisol%20Suarez"> Marisol Suarez</a>, <a href="https://publications.waset.org/abstracts/search?q=Alejandra%20Betancur"> Alejandra Betancur</a>, <a href="https://publications.waset.org/abstracts/search?q=Duvan%20Nanclares"> Duvan Nanclares</a>, <a href="https://publications.waset.org/abstracts/search?q=Natalia%20A.%20Cano"> Natalia A. Cano</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aims to evaluate the diversity of microorganisms in filters PM2.5 and PM10; and determine the genotoxic and cytotoxic activity of the complex mixture present in PM2.5 filters used in the Aburrá Valley Air Quality Monitoring Network (Colombia). The research results indicate that particulate matter PM2.5 of different monitoring stations are bacteria; however, this study of detection of bacteria and their phylogenetic relationship is not complete evidence to connect the microorganisms with pathogenic or degrading activities of compounds present in the air. Additionally, it was demonstrated the damage induced by the particulate material in the cell membrane, lysosomal and endosomal membrane and in the mitochondrial metabolism; this damage was independent of the PM2.5 concentrations in almost all the cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cytotoxic" title="cytotoxic">cytotoxic</a>, <a href="https://publications.waset.org/abstracts/search?q=genotoxic" title=" genotoxic"> genotoxic</a>, <a href="https://publications.waset.org/abstracts/search?q=microbiological%20analysis" title=" microbiological analysis"> microbiological analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=PM10" title=" PM10"> PM10</a>, <a href="https://publications.waset.org/abstracts/search?q=PM2.5" title=" PM2.5"> PM2.5</a> </p> <a href="https://publications.waset.org/abstracts/49590/microbiological-analysis-cytotoxic-and-genotoxic-effects-from-material-captured-in-pm25-and-pm10-filters-used-in-the-aburra-valley-air-quality-monitoring-network-colombia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49590.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">352</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Juan%20Pablo%20Rubio%20Ospina&page=4" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Juan%20Pablo%20Rubio%20Ospina&page=1">1</a></li> <li class="page-item"><a class="page-link" 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