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Becker</title> <meta name="description" content="Search results for: A. A. Becker"> <meta name="keywords" content="A. A. Becker"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="A. 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A. Becker"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 19</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: A. A. Becker</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Efficient Design of Distribution Logistics by Using a Model-Based Decision Support System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20Becker">J. Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Arnold"> R. Arnold</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The design of distribution logistics has a decisive impact on a company's logistics costs and performance. Hence, such solutions make an essential contribution to corporate success. This article describes a decision support system for analyzing the potential of distribution logistics in terms of logistics costs and performance. In contrast to previous procedures of business process re-engineering (BPR), this method maps distribution logistics holistically under variable distribution structures. Combined with qualitative measures the decision support system will contribute to a more efficient design of distribution logistics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=decision%20support%20system" title="decision support system">decision support system</a>, <a href="https://publications.waset.org/abstracts/search?q=distribution%20logistics" title=" distribution logistics"> distribution logistics</a>, <a href="https://publications.waset.org/abstracts/search?q=potential%20analyses" title=" potential analyses"> potential analyses</a>, <a href="https://publications.waset.org/abstracts/search?q=supply%20chain%20management" title=" supply chain management"> supply chain management</a> </p> <a href="https://publications.waset.org/abstracts/44230/efficient-design-of-distribution-logistics-by-using-a-model-based-decision-support-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44230.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">406</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">18</span> Modern Work Modules in Construction Practice</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Robin%20Becker">Robin Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Nane%20Roetmann"> Nane Roetmann</a>, <a href="https://publications.waset.org/abstracts/search?q=Manfred%20Helmus"> Manfred Helmus</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Construction companies lack junior staff for construction management. According to a nationwide survey of students, however, the profession lacks attractiveness. The conflict between the traditional job profile and the current desires of junior staff for contemporary and flexible working models must be resolved. Increasing flexibility is essential for the future viability of small and medium-sized enterprises. The implementation of modern work modules can help here. The following report will present the validation results of the developed work modules in construction practice. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=modern%20construction%20management" title="modern construction management">modern construction management</a>, <a href="https://publications.waset.org/abstracts/search?q=construction%20industry" title=" construction industry"> construction industry</a>, <a href="https://publications.waset.org/abstracts/search?q=work%20modules" title=" work modules"> work modules</a>, <a href="https://publications.waset.org/abstracts/search?q=shortage%20of%20junior%20staff" title=" shortage of junior staff"> shortage of junior staff</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20personnel%20management" title=" sustainable personnel management"> sustainable personnel management</a>, <a href="https://publications.waset.org/abstracts/search?q=making%20construction%20management%20more%20attractive" title=" making construction management more attractive"> making construction management more attractive</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20time%20model" title=" working time model"> working time model</a> </p> <a href="https://publications.waset.org/abstracts/170352/modern-work-modules-in-construction-practice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170352.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">86</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">17</span> Evaluating the Logistic Performance Capability of Regeneration Processes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thorben%20Kuprat">Thorben Kuprat</a>, <a href="https://publications.waset.org/abstracts/search?q=Julian%20Becker"> Julian Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonas%20Mayer"> Jonas Mayer</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Nyhuis"> Peter Nyhuis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For years now, it has been recognized that logistic performance capability contributes enormously to a production enterprise’s competitiveness and as such is a critical control lever. In doing so, the orientation on customer wishes (e.g. delivery dates) represents a key parameter not only in the value-adding production but also in product regeneration. Since production and regeneration processes have different characteristics, production planning and control measures cannot be directly transferred to regeneration processes. As part of a special research project, the Institute of Production Systems and Logistics Hannover is focused on increasing the logistic performance capability of regeneration processes for complex capital goods. The aim is to ensure logistic targets are met by implementing a model specifically designed to align the capacities and load in regeneration processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capacity%20planning" title="capacity planning">capacity planning</a>, <a href="https://publications.waset.org/abstracts/search?q=complex%20capital%20goods" title=" complex capital goods"> complex capital goods</a>, <a href="https://publications.waset.org/abstracts/search?q=logistic%20performance" title=" logistic performance"> logistic performance</a>, <a href="https://publications.waset.org/abstracts/search?q=regeneration%20process" title=" regeneration process"> regeneration process</a> </p> <a href="https://publications.waset.org/abstracts/10591/evaluating-the-logistic-performance-capability-of-regeneration-processes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10591.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">489</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">16</span> Optimization of the Transfer Molding Process by Implementation of Online Monitoring Techniques for Electronic Packages</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Burcu%20Kaya">Burcu Kaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan-Martin%20Kaiser"> Jan-Martin Kaiser</a>, <a href="https://publications.waset.org/abstracts/search?q=Karl-Friedrich%20Becker"> Karl-Friedrich Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanja%20Braun"> Tanja Braun</a>, <a href="https://publications.waset.org/abstracts/search?q=Klaus-Dieter%20Lang"> Klaus-Dieter Lang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Quality of the molded packages is strongly influenced by the process parameters of the transfer molding. To achieve a better package quality and a stable transfer molding process, it is necessary to understand the influence of the process parameters on the package quality. This work aims to comprehend the relationship between the process parameters, and to identify the optimum process parameters for the transfer molding process in order to achieve less voids and wire sweep. To achieve this, a DoE is executed for process optimization and a regression analysis is carried out. A systematic approach is represented to generate models which enable an estimation of the number of voids and wire sweep. Validation experiments are conducted to verify the model and the results are presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dielectric%20analysis" title="dielectric analysis">dielectric analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20packages" title=" electronic packages"> electronic packages</a>, <a href="https://publications.waset.org/abstracts/search?q=epoxy%20molding%20compounds" title=" epoxy molding compounds"> epoxy molding compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=transfer%20molding%20process" title=" transfer molding process"> transfer molding process</a> </p> <a href="https://publications.waset.org/abstracts/46904/optimization-of-the-transfer-molding-process-by-implementation-of-online-monitoring-techniques-for-electronic-packages" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46904.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">382</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">15</span> Determining Full Stage Creep Properties from Miniature Specimen Creep Test</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20Sun">W. Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Wen"> W. Wen</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Lu"> J. Lu</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20A.%20Becker"> A. A. Becker</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, methods for determining creep properties which can be used to represent the full life until failure from miniature specimen creep tests based on analytical solutions are presented. Examples used to demonstrate the application of the methods include a miniature rectangular thin beam specimen creep test under three-point bending and a miniature two-material tensile specimen creep test subjected to a steady load. Mathematical expressions for deflection and creep strain rate of the two specimens were presented for the Kachanov-Rabotnov creep damage model. On this basis, an inverse procedure was developed which has potential applications for deriving the full life creep damage constitutive properties from a very small volume of material, in particular, for various microstructure constitutive  regions, e.g. within heat-affected zones of power plant pipe weldments. Further work on validation and improvement of the method is addressed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=creep%20damage%20property" title="creep damage property">creep damage property</a>, <a href="https://publications.waset.org/abstracts/search?q=miniature%20specimen" title=" miniature specimen"> miniature specimen</a>, <a href="https://publications.waset.org/abstracts/search?q=inverse%20approach" title=" inverse approach"> inverse approach</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20modeling" title=" finite element modeling"> finite element modeling</a> </p> <a href="https://publications.waset.org/abstracts/87573/determining-full-stage-creep-properties-from-miniature-specimen-creep-test" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87573.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">231</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> A Look Back at America’s Transit History and the Impacts of Household Income on Walkability</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jackson%20Becker">Jackson Becker</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transportation produces the largest amount of carbon dioxide emissions in the United States of America. Today, cars are the predominant mode of transportation across the country, and our cities have been reshaped due to them. This was not always the case. Streetcars were seen in almost every American city of the early 1900s. These streetcar systems were viewed as obsolete with the rise of the automobile. With fewer streetcars came lower public transport ridership. Austin, Texas is one of the fastest growing cities in the country, and it used to have an extensive streetcar line. Today, it plans to build a light rail line with less rail mileage than 100 years ago. This research looks at the areas of Austin that are not included in the city’s new transit plan. Transit connectivity is one factor that goes into walkability rates for cities. This study also looks at the correlation between walkability ratings with median household income levels from the 2019 Census. The results showed a correlation between higher income neighborhoods having higher walkability rates, which was influenced by the lack of public transportation options. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=transportation" title="transportation">transportation</a>, <a href="https://publications.waset.org/abstracts/search?q=walkability" title=" walkability"> walkability</a>, <a href="https://publications.waset.org/abstracts/search?q=income" title=" income"> income</a>, <a href="https://publications.waset.org/abstracts/search?q=austin" title=" austin"> austin</a> </p> <a href="https://publications.waset.org/abstracts/191382/a-look-back-at-americas-transit-history-and-the-impacts-of-household-income-on-walkability" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/191382.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">13</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">13</span> Photoimpedance Spectroscopy Analysis of Planar and Nano-Textured Thin-Film Silicon Solar Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Kumar">P. Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Eisenhauer"> D. Eisenhauer</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20M.%20K.%20Yousef"> M. M. K. Yousef</a>, <a href="https://publications.waset.org/abstracts/search?q=Q.%20Shi"> Q. Shi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20S.%20G.%20Khalil"> A. S. G. Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Saber"> M. R. Saber</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Becker"> C. Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Pullerits"> T. Pullerits</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20J.%20Karki"> K. J. Karki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In impedance spectroscopy (IS) the response of a photo-active device is analysed as a function of ac bias. It is widely applied in a broad class of material systems and devices. It gives access to fundamental mechanisms of operation of solar cells. We have implemented a method of IS where we modulate the light instead of the bias. This scheme allows us to analyze not only carrier dynamics but also impedance of device locally. Here, using this scheme, we have measured the frequency-dependent photocurrent response of the thin-film planar and nano-textured Si solar cells using this method. Photocurrent response is measured in range of 50 Hz to 50 kHz. Bode and Nyquist plots are used to determine characteristic lifetime of both the cells. Interestingly, the carrier lifetime of both planar and nano-textured solar cells depend on back and front contact positions. This is due to either heterogeneity of device or contacts are not optimized. The estimated average lifetime is found to be shorter for the nano-textured cell, which could be due to the influence of the textured interface on the carrier relaxation dynamics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carrier%20lifetime" title="carrier lifetime">carrier lifetime</a>, <a href="https://publications.waset.org/abstracts/search?q=impedance" title=" impedance"> impedance</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-textured" title=" nano-textured"> nano-textured</a>, <a href="https://publications.waset.org/abstracts/search?q=photocurrent" title=" photocurrent"> photocurrent</a> </p> <a href="https://publications.waset.org/abstracts/85196/photoimpedance-spectroscopy-analysis-of-planar-and-nano-textured-thin-film-silicon-solar-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85196.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">233</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">12</span> Dynamic Effects of Charitable Giving in a Ramsey Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Riham%20Barbar">Riham Barbar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper studies the dynamic effects of charitable giving in a Ramsey model à la Becker and Foias (1994), such that heterogeneity is reduced to two types of agents: rich and poor. It is assumed that rich show a great concern for poor and enjoy giving. The introduction of charitable giving in this paper is inspired from the notion of Zakat (borrowed from the Islamic Economics) and is defined according to the warm-glow of Andreoni (1990). In this framework, we prove the existence of a steady state where only the patient agent holds capital. Furthermore, we show that local indetermincay appears. While moderate values of charitable-giving elasticity makes the appearance of endogenous fluctuations due to self-fulfilling expectations more likely, high values of this elasticity stabilizes endogenous fluctuations, by narrowing down the range of parameter values compatible with local indeterminacy and may rule out expectations-driven fluctuations if it exceeds certain threshold. Finally, cycles of period two emerge. However, charitable-giving makes it less likely for these cycles to emerge. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=charitable%20giving" title="charitable giving">charitable giving</a>, <a href="https://publications.waset.org/abstracts/search?q=warm-glow" title=" warm-glow"> warm-glow</a>, <a href="https://publications.waset.org/abstracts/search?q=bifurcations" title=" bifurcations"> bifurcations</a>, <a href="https://publications.waset.org/abstracts/search?q=heterogeneous%20agents" title=" heterogeneous agents"> heterogeneous agents</a>, <a href="https://publications.waset.org/abstracts/search?q=indeterminacy" title=" indeterminacy"> indeterminacy</a>, <a href="https://publications.waset.org/abstracts/search?q=self-fulfilling%20expectations" title=" self-fulfilling expectations"> self-fulfilling expectations</a>, <a href="https://publications.waset.org/abstracts/search?q=endogenous%20fluctuations" title=" endogenous fluctuations"> endogenous fluctuations</a> </p> <a href="https://publications.waset.org/abstracts/19063/dynamic-effects-of-charitable-giving-in-a-ramsey-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19063.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">316</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">11</span> Heading for Modern Construction Management: Recommendation for Employers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Robin%20Becker">Robin Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Maike%20Eilers"> Maike Eilers</a>, <a href="https://publications.waset.org/abstracts/search?q=Nane%20Roetmann"> Nane Roetmann</a>, <a href="https://publications.waset.org/abstracts/search?q=Manfred%20Helmus"> Manfred Helmus</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The shortage of junior staff in the construction industry is a problem that will be further exacerbated in the coming years by the retirement of the baby-boom generations (1955-1969) from employment. In addition, the current working conditions in the field of construction management are not attractive for young professionals. A survey of students revealed a desire for an increase in flexibility and an improved work-life balance in everyday working life. Students of civil engineering and architecture are basically interested in a career in construction management but have reservations due to the image of the profession and the current working conditions. A survey among experts from the construction industry shows that the profession can become more attractive. This report provides recommendations for action in the form of working modules to improve the working conditions of employees. If these are taken into account, graduates can be attracted to the profession of construction management, and existing staff can be retained more effectively. The aim of this report is to show incentives for employers to respond to the wishes and needs of their current and future employees to the extent that can be implemented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=modern%20construction%20management" title="modern construction management">modern construction management</a>, <a href="https://publications.waset.org/abstracts/search?q=construction%20industry" title=" construction industry"> construction industry</a>, <a href="https://publications.waset.org/abstracts/search?q=work%20modules" title=" work modules"> work modules</a>, <a href="https://publications.waset.org/abstracts/search?q=shortage%20of%20junior%20staff" title=" shortage of junior staff"> shortage of junior staff</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20personnel%20management" title=" sustainable personnel management"> sustainable personnel management</a>, <a href="https://publications.waset.org/abstracts/search?q=making%20construction%20management%20more%20attractive" title=" making construction management more attractive"> making construction management more attractive</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20time%20model" title=" working time model"> working time model</a> </p> <a href="https://publications.waset.org/abstracts/155803/heading-for-modern-construction-management-recommendation-for-employers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155803.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">83</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">10</span> Effect of an Interface Defect in a Patch/Layer Joint under Dynamic Time Harmonic Load</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elisaveta%20Kirilova">Elisaveta Kirilova</a>, <a href="https://publications.waset.org/abstracts/search?q=Wilfried%20Becker"> Wilfried Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Jordanka%20Ivanova"> Jordanka Ivanova</a>, <a href="https://publications.waset.org/abstracts/search?q=Tatyana%20Petrova"> Tatyana Petrova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study is a continuation of the research on the hygrothermal piezoelectric response of a smart patch/layer joint with undesirable interface defect (gap) at dynamic time harmonic mechanical and electrical load and environmental conditions. In order to find the axial displacements, shear stress and interface debond length in a closed analytical form for different positions of the interface gap, the 1D modified shear lag analysis is used. The debond length is represented as a function of many parameters (frequency, magnitude, electric displacement, moisture and temperature, joint geometry, position of the gap along the interface, etc.). Then the Genetic algorithm (GA) is implemented to find this position of the gap along the interface at which a vanishing/minimal debond length is ensured, e.g to find the most harmless position for the safe work of the structure. The illustrative example clearly shows that analytical shear-lag solutions and GA method can be combined successfully to give an effective prognosis of interface shear stress and interface delamination in patch/layer structure at combined loading with existing defects. To show the effect of the position of the interface gap, all obtained results are given in figures and discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=genetic%20algorithm" title="genetic algorithm">genetic algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=minimal%20delamination" title=" minimal delamination"> minimal delamination</a>, <a href="https://publications.waset.org/abstracts/search?q=optimal%20gap%20position" title=" optimal gap position"> optimal gap position</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20lag%20solution" title=" shear lag solution"> shear lag solution</a> </p> <a href="https://publications.waset.org/abstracts/74794/effect-of-an-interface-defect-in-a-patchlayer-joint-under-dynamic-time-harmonic-load" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74794.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">301</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">9</span> Validation of Modern Work Modules and Their Impact on Sustainable Human Resource Management in the Construction Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Robin%20Becker">Robin Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Nane%20Roetmann"> Nane Roetmann</a>, <a href="https://publications.waset.org/abstracts/search?q=Manfred%20Helmus"> Manfred Helmus</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The construction industry faces a significant challenge due to a shortage of skilled work-ers, especially in construction management, despite an increase in graduates. This is main-ly because the job is associated with high stress, long hours, and poor work-life balance. A survey revealed that the profession is unattractive to students, who prioritize personal growth, flexibility, and digitalization in their careers. To address this issue, companies can consider implementing various work modules like "working time documentation," "home office," "job sharing," and "time off." These modules can improve control, work-life bal-ance, and efficiency if tailored to the company's framework. They offer a way to make the field more appealing to future employees while benefiting existing staff, provided that both employers and employees are flexible and considerate of project-specific conditions and teams. The feasibility of these models depends on the company's overall framework, with potential for cost-neutral implementation and positive effects on efficiency and men-tal health. However, their success also relies on the specific context of the company, and more data is needed to assess their full impact. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=modern%20construction%20management" title="modern construction management">modern construction management</a>, <a href="https://publications.waset.org/abstracts/search?q=construction%20industry" title=" construction industry"> construction industry</a>, <a href="https://publications.waset.org/abstracts/search?q=work%20modules" title=" work modules"> work modules</a>, <a href="https://publications.waset.org/abstracts/search?q=shortage%20of%20junior%20staff" title=" shortage of junior staff"> shortage of junior staff</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20personnel%20management" title=" sustainable personnel management"> sustainable personnel management</a>, <a href="https://publications.waset.org/abstracts/search?q=making%20construction%20management%20more%20attractive" title=" making construction management more attractive"> making construction management more attractive</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20time%20model" title=" working time model"> working time model</a> </p> <a href="https://publications.waset.org/abstracts/188338/validation-of-modern-work-modules-and-their-impact-on-sustainable-human-resource-management-in-the-construction-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188338.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">40</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">8</span> Fruit Identification System in Sweet Orange Citrus (L.) Osbeck Using Thermal Imaging and Fuzzy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ingrid%20Argote">Ingrid Argote</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20Archila"> John Archila</a>, <a href="https://publications.waset.org/abstracts/search?q=Marcelo%20Becker"> Marcelo Becker</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In agriculture, intelligent systems applications have generated great advances in automating some of the processes in the production chain. In order to improve the efficiency of those systems is proposed a vision system to estimate the amount of fruits in sweet orange trees. This work presents a system proposal using capture of thermal images and fuzzy logic. A bibliographical review has been done to analyze the state-of-the-art of the different systems used in fruit recognition, and also the different applications of thermography in agricultural systems. The algorithm developed for this project uses the metrics of the fuzzines parameter to the contrast improvement and segmentation of the image, for the counting algorith m was used the Hough transform. In order to validate the proposed algorithm was created a bank of images of sweet orange Citrus (L.) Osbeck acquired in the Maringá Farm. The tests with the algorithm Indicated that the variation of the tree branch temperature and the fruit is not very high, Which makes the process of image segmentation using this differentiates, This Increases the amount of false positives in the fruit counting algorithm. Recognition of fruits isolated with the proposed algorithm present an overall accuracy of 90.5 % and grouped fruits. The accuracy was 81.3 %. The experiments show the need for a more suitable hardware to have a better recognition of small temperature changes in the image. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Agricultural%20systems" title="Agricultural systems">Agricultural systems</a>, <a href="https://publications.waset.org/abstracts/search?q=Citrus" title="Citrus">Citrus</a>, <a href="https://publications.waset.org/abstracts/search?q=Fuzzy%20logic" title="Fuzzy logic">Fuzzy logic</a>, <a href="https://publications.waset.org/abstracts/search?q=Thermal%20images." title=" Thermal images. "> Thermal images. </a> </p> <a href="https://publications.waset.org/abstracts/39767/fruit-identification-system-in-sweet-orange-citrus-l-osbeck-using-thermal-imaging-and-fuzzy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39767.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">229</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">7</span> The Role of Cognitive Impairment in Asthma Self-Management Behaviors and Outcomes in Older Adults</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gali%20Moritz">Gali Moritz</a>, <a href="https://publications.waset.org/abstracts/search?q=Jacqueline%20H.%20Becker"> Jacqueline H. Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Jyoti%20V.%20Ankam"> Jyoti V. Ankam</a>, <a href="https://publications.waset.org/abstracts/search?q=Kimberly%20Arcoleo"> Kimberly Arcoleo</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthew%20Wysocki"> Matthew Wysocki</a>, <a href="https://publications.waset.org/abstracts/search?q=Roee%20Holtzer"> Roee Holtzer</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Wisnivesky"> Juan Wisnivesky</a>, <a href="https://publications.waset.org/abstracts/search?q=Paula%20J.%20Busse"> Paula J. Busse</a>, <a href="https://publications.waset.org/abstracts/search?q=Alex%20D.%20Federman"> Alex D. Federman</a>, <a href="https://publications.waset.org/abstracts/search?q=Sunit%20P.%20Jariwala"> Sunit P. Jariwala</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20M.%20Feldman"> Jonathan M. Feldman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: Cognitive impairment (CI), whose incidence is greater among ethnic/racial minorities, is a significant barrier to asthma self-management (SM) behaviors and outcomes in older adults. The aim of this study was to examine the relationships between CI, assessed using the Montreal Cognitive Assessment (MoCA), and asthma SM behaviors and outcomes in a sample of predominantly Black and Hispanic participants. Additionally, we evaluated whether using two different MoCA cutoff scores influenced the association between CI and study outcomes. Methods: Baseline cross-sectional data were extracted from a longitudinal study of older adults with asthma (N=165) age≥ 60 years and used for analysis. Cognition was assessed using the MoCA. Asthma control, asthma-related quality of life (QOL), inhaled corticosteroid (ICS) dosing, and ICS adherence were assessed using self-report. The inhaler technique was observed and rated. Results: Using established MoCA cutoff scores of 23 and 26 yielded 45% and 74% CI rates, respectively. CI, defined using the 23 cutoff score, was significantly associated with worse asthma control (p=.04) and worse ICS adherence (p=.01). With a cutoff score of 26, only asthma-related QOL was significantly associated with CI (p=.03). Race/ethnicity and education did not moderate the relationships between CI and asthma SM behaviors and outcomes. Conclusions: CI in older adults with asthma is associated with important clinical outcomes, but this relationship is influenced by the cutoff score used to define CI. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cognition" title="cognition">cognition</a>, <a href="https://publications.waset.org/abstracts/search?q=respiratory" title=" respiratory"> respiratory</a>, <a href="https://publications.waset.org/abstracts/search?q=elderly" title=" elderly"> elderly</a>, <a href="https://publications.waset.org/abstracts/search?q=testing" title=" testing"> testing</a>, <a href="https://publications.waset.org/abstracts/search?q=adherence" title=" adherence"> adherence</a>, <a href="https://publications.waset.org/abstracts/search?q=validity" title=" validity"> validity</a> </p> <a href="https://publications.waset.org/abstracts/163963/the-role-of-cognitive-impairment-in-asthma-self-management-behaviors-and-outcomes-in-older-adults" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163963.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">80</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Systematic Analysis of Immune Response to Biomaterial Surface Characteristics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Florian%20Billing">Florian Billing</a>, <a href="https://publications.waset.org/abstracts/search?q=Soren%20Segan"> Soren Segan</a>, <a href="https://publications.waset.org/abstracts/search?q=Meike%20Jakobi"> Meike Jakobi</a>, <a href="https://publications.waset.org/abstracts/search?q=Elsa%20Arefaine"> Elsa Arefaine</a>, <a href="https://publications.waset.org/abstracts/search?q=Aliki%20Jerch"> Aliki Jerch</a>, <a href="https://publications.waset.org/abstracts/search?q=Xin%20Xiong"> Xin Xiong</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthias%20Becker"> Matthias Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Joos"> Thomas Joos</a>, <a href="https://publications.waset.org/abstracts/search?q=Burkhard%20Schlosshauer"> Burkhard Schlosshauer</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulrich%20Rothbauer"> Ulrich Rothbauer</a>, <a href="https://publications.waset.org/abstracts/search?q=Nicole%20Schneiderhan-Marra"> Nicole Schneiderhan-Marra</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanna%20Hartmann"> Hanna Hartmann</a>, <a href="https://publications.waset.org/abstracts/search?q=Christopher%20Shipp"> Christopher Shipp</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The immune response plays a major role in implant biocompatibility, but an understanding of how to design biomaterials for specific immune responses is yet to be achieved. We aimed to better understand how changing certain material properties can drive immune responses. To this end, we tested immune response to experimental implant coatings that vary in specific characteristics. A layer-by-layer approach was employed to vary surface charge and wettability. Human-based in vitro models (THP-1 macrophages and primary peripheral blood mononuclear cells (PBMCS)) were used to assess immune responses using multiplex cytokine analysis, flow cytometry (CD molecule expression) and microscopy (cell morphology). We observed dramatic differences in immune response due to specific alterations in coating properties. For example altering the surface charge of coating A from anionic to cationic resulted in the substantial elevation of the pro-inflammatory molecules IL-1beta, IL-6, TNF-alpha and MIP-1beta, while the pro-wound healing factor VEGF was significantly down-regulated. We also observed changes in cell surface marker expression in relation to altered coating properties, such as CD16 on NK Cells and HLA-DR on monocytes. We furthermore observed changes in the morphology of THP-1 macrophages following cultivation on different coatings. A correlation between these morphological changes and the cytokine expression profile is ongoing. Targeted changes in biomaterial properties can produce vast differences in immune response. The properties of the coatings examined here may, therefore, be a method to direct specific biological responses in order to improve implant biocompatibility. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomaterials" title="biomaterials">biomaterials</a>, <a href="https://publications.waset.org/abstracts/search?q=coatings" title=" coatings"> coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=immune%20system" title=" immune system"> immune system</a>, <a href="https://publications.waset.org/abstracts/search?q=implants" title=" implants"> implants</a> </p> <a href="https://publications.waset.org/abstracts/106219/systematic-analysis-of-immune-response-to-biomaterial-surface-characteristics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106219.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">189</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">5</span> Optimising Post-Process Heat Treatments of Selective Laser Melting-Produced Ti-6Al-4V Parts to Achieve Superior Mechanical Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gerrit%20Ter%20Haar">Gerrit Ter Haar</a>, <a href="https://publications.waset.org/abstracts/search?q=Thorsten%20Becker"> Thorsten Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Deborah%20Blaine"> Deborah Blaine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Additive Manufacturing (AM) process of Selective Laser Melting (SLM) has seen an exponential growth in sales and development in the past fifteen years. Whereas the capability of SLM was initially limited to rapid prototyping, progress in research and development (R&D) has allowed SLM to be capable of fully functional parts. This technology is still at a primitive stage and technical knowledge of the vast number of variables influencing final part quality is limited. Ongoing research and development of the sensitive printing process and post processes is of utmost importance in order to qualify SLM parts to meet international standards. Quality concerns in Ti-6Al-4V manufactured through SLM has been identified, which include: high residual stresses, part porosity, low ductility and anisotropic mechanical properties. Whereas significant quality improvements have been made through optimising printing parameters, research indicates as-produced part ductility to be a major limiting factor when compared to its wrought counterpart. This study aims at achieving an in-depth understanding of the underlining links between SLM produced Ti-6Al-4V microstructure and its mechanical properties. Knowledge of microstructural transformation kinetics of Ti-6Al-4V allows for the optimisation of post-process heat treatments thereby achieving the required process route to manufacture high quality SLM produced Ti-6Al-4V parts. Experimental methods used to evaluate the kinematics of microstructural transformation of SLM Ti-6Al-4V are: optical microscopy and electron backscatter diffraction. Results show that a low-temperature heat treatment is capable of transforming the as-produced, martensitic microstructure into a duel-phase microstructure exhibiting both a high strength and improved ductility. Furthermore, isotropy of mechanical properties can be achieved through certain annealing routes. Mechanical properties identical to that of wrought Ti-6Al-4V can, therefore, be achieved through an optimised process route. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EBSD%20analysis" title="EBSD analysis">EBSD analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20treatments" title=" heat treatments"> heat treatments</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructural%20characterisation" title=" microstructural characterisation"> microstructural characterisation</a>, <a href="https://publications.waset.org/abstracts/search?q=selective%20laser%20melting" title=" selective laser melting"> selective laser melting</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20behaviour" title=" tensile behaviour"> tensile behaviour</a>, <a href="https://publications.waset.org/abstracts/search?q=Ti-6Al-4V" title=" Ti-6Al-4V"> Ti-6Al-4V</a> </p> <a href="https://publications.waset.org/abstracts/60678/optimising-post-process-heat-treatments-of-selective-laser-melting-produced-ti-6al-4v-parts-to-achieve-superior-mechanical-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60678.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">421</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">4</span> Sensory Ethnography and Interaction Design in Immersive Higher Education</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anna-Kaisa%20Sjolund">Anna-Kaisa Sjolund</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The doctoral thesis examines interaction design and sensory ethnography as tools to create immersive education environments. In recent years, there has been increasing interest and discussions among researchers and educators on immersive education like augmented reality tools, virtual glasses and the possibilities to utilize them in education at all levels. Using virtual devices as learning environments it is possible to create multisensory learning environments. Sensory ethnography in this study refers to the way of the senses consider the impact on the information dynamics in immersive learning environments. The past decade has seen the rapid development of virtual world research and virtual ethnography. Christine Hine's Virtual Ethnography offers an anthropological explanation of net behavior and communication change. Despite her groundbreaking work, time has changed the users’ communication style and brought new solutions to do ethnographical research. The virtual reality with all its new potential has come to the fore and considering all the senses. Movie and image have played an important role in cultural research for centuries, only the focus has changed in different times and in a different field of research. According to Karin Becker, the role of image in our society is information flow and she found two meanings what the research of visual culture is. The images and pictures are the artifacts of visual culture. Images can be viewed as a symbolic language that allows digital storytelling. Combining the sense of sight, but also the other senses, such as hear, touch, taste, smell, balance, the use of a virtual learning environment offers students a way to more easily absorb large amounts of information. It offers also for teachers’ different ways to produce study material. In this article using sensory ethnography as research tool approaches the core question. Sensory ethnography is used to describe information dynamics in immersive environment through interaction design. Immersive education environment is understood as three-dimensional, interactive learning environment, where the audiovisual aspects are central, but all senses can be taken into consideration. When designing learning environments or any digital service, interaction design is always needed. The question what is interaction design is justified, because there is no simple or consistent idea of what is the interaction design or how it can be used as a research method or whether it is only a description of practical actions. When discussing immersive learning environments or their construction, consideration should be given to interaction design and sensory ethnography. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=immersive%20education" title="immersive education">immersive education</a>, <a href="https://publications.waset.org/abstracts/search?q=sensory%20ethnography" title=" sensory ethnography"> sensory ethnography</a>, <a href="https://publications.waset.org/abstracts/search?q=interaction%20design" title=" interaction design"> interaction design</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20dynamics" title=" information dynamics"> information dynamics</a> </p> <a href="https://publications.waset.org/abstracts/85077/sensory-ethnography-and-interaction-design-in-immersive-higher-education" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85077.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">137</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">3</span> Developing a Tissue-Engineered Aortic Heart Valve Based on an Electrospun Scaffold </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sara%20R.%20Knigge">Sara R. Knigge</a>, <a href="https://publications.waset.org/abstracts/search?q=Sugat%20R.%20Tuladhar"> Sugat R. Tuladhar</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Becker"> Alexander Becker</a>, <a href="https://publications.waset.org/abstracts/search?q=Tobias%20Schilling"> Tobias Schilling</a>, <a href="https://publications.waset.org/abstracts/search?q=Birgit%20Glasmacher"> Birgit Glasmacher </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Commercially available mechanical or biological heart valve prostheses both tend to fail long-term due to thrombosis, calcific degeneration, infection, or immunogenic rejection. Moreover, these prostheses are non-viable and do not grow with the patients, which is a problem for young patients. As a result, patients often need to undergo redo-operations. Tissue-engineered (TE) heart valves based on degradable electrospun fiber scaffolds represent a promising approach to overcome these limitations. Such scaffolds need sufficient mechanical properties to withstand the hydrodynamic stress of intracardiac hemodynamics. Additionally, the scaffolds should be colonized by autologous or homologous cells to facilitate the in vivo remodeling of the scaffolds to a viable structure. This study investigates how process parameters of electrospinning and degradation affect the mechanical properties of electrospun scaffolds made of FDA-approved, biodegradable polymer polycaprolactone (PCL). Fiber mats were produced from a PCL/tetrafluoroethylene solution by electrospinning. The e-spinning process was varied in terms of scaffold thickness, fiber diameter, fiber orientation, and fiber interconnectivity. The morphology of the fiber mats was characterized with a scanning electron microscope (SEM). The mats were degraded in different solutions (cell culture media, SBF, PBS and 10 M NaOH-Solution). At different time points of degradation (2, 4 and 6 weeks), tensile and cyclic loading tests were performed. Fresh porcine pericardium and heart valves served as a control for the mechanical assessment. The progression of polymer degradation was quantified by SEM and differential scanning calorimetry (DSC). Primary Human aortic endothelial cells (HAECs) and Human induced pluripotent stem cell-derived endothelial cells (iPSC-ECs) were seeded on the fiber mats to investigate the cell colonization potential. The results showed that both the electrospinning parameters and the degradation significantly influenced the mechanical properties. Especially the fiber orientation has a considerable impact and leads to a pronounced anisotropic behavior of the scaffold. Preliminary results showed that the polymer became strongly more brittle over time. However, the embrittlement can initially only be detected in the mechanical test. In the SEM and DSC investigations, neither morphological nor thermodynamic changes are significantly detectable. Live/Dead staining and SEM imaging of the cell-seeded scaffolds showed that HAECs and iPSC-ECs were able to grow on the surface of the polymer. In summary, this study's results indicate a promising approach to the development of a TE aortic heart valve based on an electrospun scaffold. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electrospun%20scaffolds" title="electrospun scaffolds">electrospun scaffolds</a>, <a href="https://publications.waset.org/abstracts/search?q=long-term%20polymer%20degradation" title=" long-term polymer degradation"> long-term polymer degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20behavior%20of%20electrospun%20PCL" title=" mechanical behavior of electrospun PCL"> mechanical behavior of electrospun PCL</a>, <a href="https://publications.waset.org/abstracts/search?q=tissue%20engineered%20aortic%20heart%20valve" title=" tissue engineered aortic heart valve"> tissue engineered aortic heart valve</a> </p> <a href="https://publications.waset.org/abstracts/136128/developing-a-tissue-engineered-aortic-heart-valve-based-on-an-electrospun-scaffold" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136128.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">2</span> Self-Stigmatization of Deaf and Hard-of-Hearing Students</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nadezhda%20F.%20Mikahailova">Nadezhda F. Mikahailova</a>, <a href="https://publications.waset.org/abstracts/search?q=Margarita%20E.%20Fattakhova"> Margarita E. Fattakhova</a>, <a href="https://publications.waset.org/abstracts/search?q=Mirgarita%20A.%20Mironova"> Mirgarita A. Mironova</a>, <a href="https://publications.waset.org/abstracts/search?q=Ekaterina%20V.%20Vyacheslavova"> Ekaterina V. Vyacheslavova</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20A.%20Mikahailov"> Vladimir A. Mikahailov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Stigma is a significant obstacle to the successful adaptation of deaf students to the conditions of an educational institution, especially for those who study in inclusion. The aim of the study was to identify the spheres of life which are the most significant for developing of the stigma of deaf students; to assess the influence of factors associated with deafness on the degree of their self-stigmatization (time and degree of hearing loss, type of education - inclusion / differentiation) and to find out who is more prone to stigma - which characteristics of personality, identity, mental health and coping are specific for those deaf who demonstrates stigmatizing attitudes. The study involved 154 deaf and hard-of-hearing students (85 male and 69 female) aged from 18 to 45 years - 28 students of the Herzen State Pedagogical University (St. Petersburg), who study in inclusion, 108 students of the National Research Technological University and 18 students of the Aviation Technical College (Kazan) - students in groups with a sign language interpreter. We used the following methods: modified questionnaire 'Self-assessment and coping strategies' (Jambor & Elliot, 2005), Scale of self-esteem (Rosenberg et al, 1995), 'Big-Five' (Costa&McCrae, 1997), TRF (Becker, 1989), WCQ (Lazarus & Folkman, 1988), self-stigma scale (Mikhailov, 2008). The severity of self-stigmatization of deaf and hard of hearing students was determined by the degree of deafness and the time they live with hearing loss, learning conditions, the type of self-identification (acculturation), personality traits, and the specifics of coping behavior. Persons with congenital hearing loss more often noted a benevolent and sympathetic attitude towards them on the part of the hearers and less often, due to deafness, limited themselves to visiting public places than late deaf people, which indicates 'get rid of' the experience of their defect and normalization of the state. Students studying in conditions of inclusion more often noted the dismissive attitude of society towards deaf people. Individuals with mild to moderate hearing loss were more likely to fear marriage and childbearing because of their deafness than students with profound hearing loss. Those who considered themselves disabled (49% of all respondents) were more inclined to cope with seeking social support and less used 'distancing' coping. Those who believed that their quality of life and social opportunities were most influenced by the attitude of society towards the deaf (39%) were distinguished by a less pronounced sense of self-worth, a desire for autonomy, and frequent usage of 'avoidance' coping strategies. 36.4% of the respondents noted that there have been situations in their lives when people learned that they are deaf, began to treat them worse. These respondents had predominantly deaf acculturation, but more often, they used 'bicultural skills,' specific coping for the deaf, and had a lower level of extraversion and emotional stability. 31.2% of the respondents tried to hide from others that they have hearing problems. They considered themselves to be in a culture of hearing, used coping strategies 'bicultural skills,' and had lower levels of extraversion, cooperation, and emotional stability. Acknowledgment: Supported by the RFBR № 19-013-0040 <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acculturation" title="acculturation">acculturation</a>, <a href="https://publications.waset.org/abstracts/search?q=coping" title=" coping"> coping</a>, <a href="https://publications.waset.org/abstracts/search?q=deafness" title=" deafness"> deafness</a>, <a href="https://publications.waset.org/abstracts/search?q=stigmatization" title=" stigmatization"> stigmatization</a> </p> <a href="https://publications.waset.org/abstracts/131115/self-stigmatization-of-deaf-and-hard-of-hearing-students" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131115.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">233</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">1</span> Identity and Mental Adaptation of Deaf and Hard-of-Hearing Students</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20F.%20Mikhailova">N. F. Mikhailova</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20E.%20Fattakhova"> M. E. Fattakhova</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Mironova"> M. A. Mironova</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20V.%20Vyacheslavova"> E. V. Vyacheslavova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For the mental and social adaptation of the deaf and hard-of-hearing people, cultural and social aspects - the formation of identity (acculturation) and educational conditions – are highly significant. We studied 137 deaf and hard-of-hearing students in different educational situations. We used these methods: Big Five (Costa & McCrae, 1997), TRF (Becker, 1989), WCQ (Lazarus & Folkman, 1988), self-esteem, and coping strategies (Jambor & Elliott, 2005), self-stigma scale (Mikhailov, 2008). Type of self-identification of students depended on the degree of deafness, type of education, method of communication in the family: large hearing loss, education in schools for deaf, and gesture communication increased the likelihood of a 'deaf' acculturation. Less hearing loss, inclusive education in public school or school for the hearing-impaired, mixed communication in the family contributed to the formation of 'hearing' acculturation. The choice of specific coping depended on the degree of deafness: a large hearing loss increased coping 'withdrawal into the deaf world' and decreased 'bicultural skills' coping. People with mild hearing loss tended to cover-up it. In the context of ongoing discussion, we researched personality characteristics in deaf and hard on-hearing students, coping and other deafness associated factors depending on their acculturation type. Students who identified themselves with the 'hearing world' had a high self-esteem, a higher level of extraversion, self-awareness, personal resources, willingness to cooperate, better psychological health, emotional stability, higher ability to empathy, a greater satiety of life with feelings and sense and high sense of self-worth. They also actively used strategies, problem-solving, acceptance of responsibility, positive revaluation. Student who limited themselves within the culture of deaf people had more severe hearing loss and accordingly had more communication barriers. Lack of use or seldom use of coping strategies by these students point at decreased level of stress in their life. Their self-esteem have not been challenged in the specific social environment of the students with the same severity of defect, and thus this environment provided sense of comfort (we can assume that from the high scores on psychological health, personality resources, and emotional stability). Students with bicultural acculturation had higher level of psychological resources - they used Positive Reappraisal coping more often and had a higher level of psychological health. Lack of belonging to certain culture (marginality) leads to personality disintegration, social and psychological disadaptation: deaf and hard-of-hearing students with marginal identification had a lower self-estimation level, worse psychological health and personal resources, lower level of extroversion, self-confidence and life satisfaction. They, in fact, become 'risk group' (many of them dropped out of universities, divorced, and one even ended up in the ranks of ISIS). All these data argue the importance of cultural 'anchor' for people with hearing deprivation. Supported by the RFBR No 19-013-00406. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acculturation" title="acculturation">acculturation</a>, <a href="https://publications.waset.org/abstracts/search?q=coping" title=" coping"> coping</a>, <a href="https://publications.waset.org/abstracts/search?q=deafness" title=" deafness"> deafness</a>, <a href="https://publications.waset.org/abstracts/search?q=marginality" title=" marginality"> marginality</a> </p> <a href="https://publications.waset.org/abstracts/131021/identity-and-mental-adaptation-of-deaf-and-hard-of-hearing-students" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131021.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">204</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Explore <li><a href="https://waset.org/disciplines">Disciplines</a></li> <li><a href="https://waset.org/conferences">Conferences</a></li> <li><a href="https://waset.org/conference-programs">Conference Program</a></li> <li><a href="https://waset.org/committees">Committees</a></li> <li><a href="https://publications.waset.org">Publications</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Research <li><a href="https://publications.waset.org/abstracts">Abstracts</a></li> <li><a href="https://publications.waset.org">Periodicals</a></li> <li><a href="https://publications.waset.org/archive">Archive</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Open Science <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Philosophy.pdf">Open Science Philosophy</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Award.pdf">Open Science Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Society-Open-Science-and-Open-Innovation.pdf">Open Innovation</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Postdoctoral-Fellowship-Award.pdf">Postdoctoral Fellowship Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Scholarly-Research-Review.pdf">Scholarly Research Review</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Support <li><a href="https://waset.org/page/support">Support</a></li> <li><a href="https://waset.org/profile/messages/create">Contact Us</a></li> <li><a href="https://waset.org/profile/messages/create">Report Abuse</a></li> </ul> </div> </div> </div> </div> </div> <div class="container text-center"> <hr style="margin-top:0;margin-bottom:.3rem;"> <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" class="text-muted small">Creative Commons Attribution 4.0 International License</a> <div id="copy" class="mt-2">© 2024 World Academy of Science, Engineering and Technology</div> </div> </footer> <a href="javascript:" id="return-to-top"><i class="fas fa-arrow-up"></i></a> <div class="modal" id="modal-template"> <div class="modal-dialog"> <div class="modal-content"> <div class="row m-0 mt-1"> <div class="col-md-12"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> </div> </div> <div class="modal-body"></div> </div> </div> </div> <script src="https://cdn.waset.org/static/plugins/jquery-3.3.1.min.js"></script> <script src="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/js/bootstrap.bundle.min.js"></script> <script src="https://cdn.waset.org/static/js/site.js?v=150220211556"></script> <script> jQuery(document).ready(function() { /*jQuery.get("https://publications.waset.org/xhr/user-menu", function (response) { jQuery('#mainNavMenu').append(response); });*/ jQuery.get({ url: "https://publications.waset.org/xhr/user-menu", cache: false }).then(function(response){ jQuery('#mainNavMenu').append(response); }); }); </script> </body> </html>