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Veiga</title> <meta name="description" content="Search results for: Alvaro Veiga"> <meta name="keywords" content="Alvaro Veiga"> <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 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Alvaro Veiga"> <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> 62</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Alvaro Veiga</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">62</span> Alvaro Siza’s Design Strategy: An Insight into Critical Regionalism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rahmatollah%20Amirjani">Rahmatollah Amirjani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> By the emergence of the debate over the failure of Regionalism in the late 1970s, Critical Regionalism was introduced as a different way to respond to the state of architecture in the post-war era. Critical Regionalism is most often understood as a discourse that not only mediates the language of modern architecture with the local cultures but also revives the relation between architecture and spectator as indexed by capitalism. Since the inception of Critical Regionalism, a large number of architectural practices have emerged around the globe; however, the work of the well-known Portuguese architect, Álvaro Siza, is considered as a unique case amongst works associated with the discourse of Critical Regionalism. This paper intends to respond to a number of questions, including; what are the origins of Critical Regionalism? How does Siza’s design strategy correspond to the thematic of Critical Regionalism? How does Siza recover the relation between object and subject in most of his projects? Using Siza’s housing project for the Malagueira district in Évora, Portugal, this article will attempt to answer these questions, and highlight Alvaro Siza’s design procedure which goes beyond the existing discourse of Critical Regionalism and contributes to our understanding of this practice. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Siza" title="Alvaro Siza">Alvaro Siza</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20regionalism" title=" critical regionalism"> critical regionalism</a>, <a href="https://publications.waset.org/abstracts/search?q=Malagueira%20housing" title=" Malagueira housing"> Malagueira housing</a>, <a href="https://publications.waset.org/abstracts/search?q=placelessness" title=" placelessness"> placelessness</a> </p> <a href="https://publications.waset.org/abstracts/91723/alvaro-sizas-design-strategy-an-insight-into-critical-regionalism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91723.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">180</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">61</span> Nonparametric Estimation of Risk-Neutral Densities via Empirical Esscher Transform</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Manoel%20Pereira">Manoel Pereira</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Veiga"> Alvaro Veiga</a>, <a href="https://publications.waset.org/abstracts/search?q=Camila%20Epprecht"> Camila Epprecht</a>, <a href="https://publications.waset.org/abstracts/search?q=Renato%20Costa"> Renato Costa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduces an empirical version of the Esscher transform for risk-neutral option pricing. Traditional parametric methods require the formulation of an explicit risk-neutral model and are operational only for a few probability distributions for the returns of the underlying. In our proposal, we make only mild assumptions on the pricing kernel and there is no need for the formulation of the risk-neutral model for the returns. First, we simulate sample paths for the returns under the physical distribution. Then, based on the empirical Esscher transform, the sample is reweighted, giving rise to a risk-neutralized sample from which derivative prices can be obtained by a weighted sum of the options pay-offs in each path. We compare our proposal with some traditional parametric pricing methods in four experiments with artificial and real data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=esscher%20transform" title="esscher transform">esscher transform</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20autoregressive%20Conditional%20Heteroscedastic%20%28GARCH%29" title=" generalized autoregressive Conditional Heteroscedastic (GARCH)"> generalized autoregressive Conditional Heteroscedastic (GARCH)</a>, <a href="https://publications.waset.org/abstracts/search?q=nonparametric%20option%20pricing" title=" nonparametric option pricing"> nonparametric option pricing</a> </p> <a href="https://publications.waset.org/abstracts/20964/nonparametric-estimation-of-risk-neutral-densities-via-empirical-esscher-transform" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20964.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">60</span> Leça da Palmeira Revisited: Sixty-Seven Years of Recurring Work by Álvaro Siza</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eduardo%20Jorge%20Cabral%20dos%20Santos%20Fernandes">Eduardo Jorge Cabral dos Santos Fernandes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the last sixty-seven years, Portuguese architect Álvaro Siza Vieira designed several interventions for the Leça da Palmeira waterfront. With this paper, we aim to analyze the history of this set of projects in a chronological approach, seeking to understand the connections that can be established between them. Born in Matosinhos, a fishing and industrial village located near Porto, Álvaro Siza built a remarkable relationship with Leça da Palmeira (a neighboring village located to the north) from a personal and professional point of view throughout his life: it was there that he got married (in the small chapel located next to the Boa Nova lighthouse) and it was there that he designed his first works of great impact, the Boa Nova Tea House and the Ocean Swimming Pool, today classified as national monuments. These two works were the subject of several projects spaced over time, including recent restoration interventions designed by the same author. However, the marks of Siza's intervention in this territory are not limited to these two cases; there were other projects designed for this territory, which we also intend to analyze: the monument to the poet António Nobre (1967-80), the unbuilt project for a restaurant next to Piscina das Marés (presented in 1966 and redesigned in 1993), the reorganization of the Avenida da Liberdade (with a first project, not carried out, in 1965-74, and a reformulation carried out between 1998 and 2006) and, finally, the project for the new APDL facilities, which completes Avenida da Liberdade to the south (1995). Altogether, these interventions are so striking in this territory, from a landscape, formal, functional, and tectonic point of view, that it is difficult to imagine this waterfront without their presence. In all cases, the relationship with the site explains many of the design options. Time after time, the conditions of the pre-existing territory (also affected by the previous interventions of Siza) were considered, so each project created a new circumstance, conditioning the following interventions. This paper is part of a more comprehensive project, which aims to analyze the work of Álvaro Siza in its fundamental relationship with the site. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20Siza" title="Álvaro Siza">Álvaro Siza</a>, <a href="https://publications.waset.org/abstracts/search?q=contextualism" title=" contextualism"> contextualism</a>, <a href="https://publications.waset.org/abstracts/search?q=Le%C3%A7a%20da%20Palmeira" title=" Leça da Palmeira"> Leça da Palmeira</a>, <a href="https://publications.waset.org/abstracts/search?q=landscape" title=" landscape"> landscape</a> </p> <a href="https://publications.waset.org/abstracts/188406/leca-da-palmeira-revisited-sixty-seven-years-of-recurring-work-by-alvaro-siza" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188406.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">31</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">59</span> The Influence of Alvar Aalto on the Early Work of Álvaro Siza</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eduardo%20Jorge%20Cabral%20dos%20Santos%20Fernandes">Eduardo Jorge Cabral dos Santos Fernandes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The expression ‘Porto School’, usually associated with an educational institution, the School of Fine Arts of Porto, is applied for the first time with the sense of an architectural trend by Nuno Portas in a text published in 1983. The expression is used to characterize a set of works by Porto architects, in which common elements are found, namely the desire to reuse languages and forms of the German and Dutch rationalism of the twenties, using the work of Alvar Aalto as a mediation for the reinterpretation of these models. In the same year, Álvaro Siza classifies the Finnish architect as a miscegenation agent who transforms experienced models and introduces them to different realities in a text published in Jornal de Letras, Artes e Ideias. The influence of foreign models and their adaptation to the context has been a recurrent theme in Portuguese architecture, which finds important contributions in the writings of Alexandre Alves Costa, at this time. However, the identification of these characteristics in Siza’s work is not limited to the Portuguese theoretical production: it is the recognition of this attitude towards the context that leads Kenneth Frampton to include Siza in the restricted group of architects who embody Critical Regionalism (in his book Modern architecture: a critical history). For Frampton, his work focuses on the territory and on the consequences of the intervention in the context, viewing architecture as a tectonic fact rather than a series of scenographic episodes and emphasizing site-specific aspects (topography, light, climate). Therefore, the motto of this paper is the dichotomous opposition between foreign influences and adaptation to the context in the early work of Álvaro Siza (designed in the sixties) in which the influence (theoretical, methodological, and formal) of Alvar Aalto manifests itself in the form and the language: the pool at Quinta da Conceição, the Seaside Pools and the Tea House (three works in Leça da Palmeira) and the Lordelo Cooperative (in Porto). This work is part of a more comprehensive project, which considers several case studies throughout the Portuguese architect's vast career, built in Portugal and abroad, in order to obtain a holistic view. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvar%20Aalto" title="Alvar Aalto">Alvar Aalto</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20Siza" title=" Álvaro Siza"> Álvaro Siza</a>, <a href="https://publications.waset.org/abstracts/search?q=foreign%20influences" title=" foreign influences"> foreign influences</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptation%20to%20the%20context" title=" adaptation to the context"> adaptation to the context</a> </p> <a href="https://publications.waset.org/abstracts/188394/the-influence-of-alvar-aalto-on-the-early-work-of-alvaro-siza" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188394.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">30</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">58</span> Induced Bone Tissue Temperature in Drilling Procedures: A Comparative Laboratory Study with and without Lubrication</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=L.%20Roseiro">L. Roseiro</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Veiga"> C. Veiga</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Maranha"> V. Maranha</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Neto"> A. Neto</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Laraqi"> N. Laraqi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ba%C3%AFri"> A. Baïri</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Alilat"> N. Alilat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In orthopedic surgery there are various situations in which the surgeon needs to implement methods of cutting and drilling the bone. With this type of procedure the generated friction leads to a localized increase in temperature, which may lead to the bone necrosis. Recognizing the importance of studying this phenomenon, an experimental evaluation of the temperatures developed during the procedure of drilling bone has been done. Additionally the influence of the use of the procedure with / without additional lubrication during drilling of bone has also been done. The obtained results are presented and discussed and suggests an advantage in using additional lubrication as a way to minimize the appearance of bone tissue necrosis during bone drilling procedures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bone%20necrosis" title="bone necrosis">bone necrosis</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20drilling" title=" bone drilling"> bone drilling</a>, <a href="https://publications.waset.org/abstracts/search?q=thermography" title=" thermography"> thermography</a>, <a href="https://publications.waset.org/abstracts/search?q=surgery" title=" surgery"> surgery</a> </p> <a href="https://publications.waset.org/abstracts/16605/induced-bone-tissue-temperature-in-drilling-procedures-a-comparative-laboratory-study-with-and-without-lubrication" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16605.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">597</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">57</span> One vs. Rest and Error Correcting Output Codes Principled Rebalancing Schemes for Solving Imbalanced Multiclass Problems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Callejas-Ramos">Alvaro Callejas-Ramos</a>, <a href="https://publications.waset.org/abstracts/search?q=Lorena%20Alvarez-Perez"> Lorena Alvarez-Perez</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Benitez-Buenache"> Alexander Benitez-Buenache</a>, <a href="https://publications.waset.org/abstracts/search?q=Anibal%20R.%20Figueiras-Vidal"> Anibal R. Figueiras-Vidal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This contribution presents a promising formulation which allows to extend the principled binary rebalancing procedures, also known as neutral re-balancing mechanisms in the sense that they do not alter the likelihood ratio <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bregman%20divergences" title="Bregman divergences">Bregman divergences</a>, <a href="https://publications.waset.org/abstracts/search?q=imbalanced%20multiclass%20classifi-cation" title=" imbalanced multiclass classifi-cation"> imbalanced multiclass classifi-cation</a>, <a href="https://publications.waset.org/abstracts/search?q=informed%20re-balancing" title=" informed re-balancing"> informed re-balancing</a>, <a href="https://publications.waset.org/abstracts/search?q=invariant%20likelihood%20ratio" title=" invariant likelihood ratio"> invariant likelihood ratio</a> </p> <a href="https://publications.waset.org/abstracts/135039/one-vs-rest-and-error-correcting-output-codes-principled-rebalancing-schemes-for-solving-imbalanced-multiclass-problems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135039.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">216</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">56</span> Neural Networks and Genetic Algorithms Approach for Word Correction and Prediction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rodrigo%20S.%20Fonseca">Rodrigo S. Fonseca</a>, <a href="https://publications.waset.org/abstracts/search?q=Ant%C3%B4nio%20C.%20P.%20Veiga"> Antônio C. P. Veiga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aiming at helping people with some movement limitation that makes typing and communication difficult, there is a need to customize an assistive tool with a learning environment that helps the user in order to optimize text input, identifying the error and providing the correction and possibilities of choice in the Portuguese language. The work presents an Orthographic and Grammatical System that can be incorporated into writing environments, improving and facilitating the use of an alphanumeric keyboard, using a prototype built using a genetic algorithm in addition to carrying out the prediction, which can occur based on the quantity and position of the inserted letters and even placement in the sentence, ensuring the sequence of ideas using a Long Short Term Memory (LSTM) neural network. The prototype optimizes data entry, being a component of assistive technology for the textual formulation, detecting errors, seeking solutions and informing the user of accurate predictions quickly and effectively through machine learning. <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=neural%20networks" title=" neural networks"> neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=word%20prediction" title=" word prediction"> word prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20learning" title=" machine learning"> machine learning</a> </p> <a href="https://publications.waset.org/abstracts/141048/neural-networks-and-genetic-algorithms-approach-for-word-correction-and-prediction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141048.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">194</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">55</span> Application of Artificial Neural Networks to Adaptive Speed Control under ARDUINO</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Javier%20Fernandez%20De%20Canete">Javier Fernandez De Canete</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Fernandez-Quintero"> Alvaro Fernandez-Quintero</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, adaptive control schemes are being used when model based control schemes are applied in presence of uncertainty and model mismatches. Artificial neural networks have been employed both in modelling and control of non-linear dynamic systems with unknown dynamics. In fact, these are powerful tools to solve this control problem when only input-output operational data are available. A neural network controller under SIMULINK together with the ARDUINO hardware platform has been used to perform real-time speed control of a computer case fan. Comparison of performance with a PID controller has also been presented in order to show the efficacy of neural control under different command signals tracking and also when disturbance signals are present in the speed control loops. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=neural%20networks" title="neural networks">neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=ARDUINO%20platform" title=" ARDUINO platform"> ARDUINO platform</a>, <a href="https://publications.waset.org/abstracts/search?q=SIMULINK" title=" SIMULINK"> SIMULINK</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20speed%20control" title=" adaptive speed control"> adaptive speed control</a> </p> <a href="https://publications.waset.org/abstracts/78360/application-of-artificial-neural-networks-to-adaptive-speed-control-under-arduino" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78360.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">363</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">54</span> Multidimensional Item Response Theory Models for Practical Application in Large Tests Designed to Measure Multiple Constructs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maria%20Fernanda%20Ordo%C3%B1ez%20Martinez">Maria Fernanda Ordoñez Martinez</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Mauricio%20Montenegro"> Alvaro Mauricio Montenegro</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents a statistical methodology for measuring and founding constructs in Latent Semantic Analysis. This approach uses the qualities of Factor Analysis in binary data with interpretations present on Item Response Theory. More precisely, we propose initially reducing dimensionality with specific use of Principal Component Analysis for the linguistic data and then, producing axes of groups made from a clustering analysis of the semantic data. This approach allows the user to give meaning to previous clusters and found the real latent structure presented by data. The methodology is applied in a set of real semantic data presenting impressive results for the coherence, speed and precision. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=semantic%20analysis" title="semantic analysis">semantic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=factorial%20analysis" title=" factorial analysis"> factorial analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=dimension%20reduction" title=" dimension reduction"> dimension reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=penalized%20logistic%20regression" title=" penalized logistic regression"> penalized logistic regression</a> </p> <a href="https://publications.waset.org/abstracts/42128/multidimensional-item-response-theory-models-for-practical-application-in-large-tests-designed-to-measure-multiple-constructs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42128.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">443</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">53</span> Oral Microflora and the Risk of Dental Caries in Portuguese Children</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sara%20Sousa">Sara Sousa</a>, <a href="https://publications.waset.org/abstracts/search?q=Veronique%20Gomes"> Veronique Gomes</a>, <a href="https://publications.waset.org/abstracts/search?q=N%C3%A9lio%20Veiga"> Nélio Veiga</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Jos%C3%A9%20Correia"> Maria José Correia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives: To assess the presence or absence of Streptococcus mutans, Streptococcus gordonii and Streptococcus salivarius in the oral biofilm of children in an elementary school of Viseu, Portugal, and verify the relationship between Streptococcus gordonii and Streptococcus salivarius and the absence of dental caries. Methods: A cross-sectional study was designed with a final sample of 40 children aged 6-11 years old. Oral examination was accomplished with the identification of their oral health status and oral biofilm collection. Analysis of biological samples by molecular techniques of DNA isolation and identification of three Streptococci bacteria by Polimerase Chain Reaction (PCR) was made. Results: We identified Streptococcus salivarius and Streptococcus gordoni only in the lower interincisal region. These species were also present mainly in the first permanent non-decayed molars. On the contrary, Streptococcus mutans was found mostly in decayed first permanent molars. Conclusion: This preliminary study establishes a possible association between the absence of dental caries and the presence of Streptococcus gordonii and Streptococcus salivarius. Since these two species are described as alkali producers, it is suggested that their presence somehow confers protection against caries. These results support new dental caries prevention strategies based on oral biofilm modulation by enrichment with alkalinogenic species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dental%20caries" title="dental caries">dental caries</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20biofilm" title=" oral biofilm"> oral biofilm</a>, <a href="https://publications.waset.org/abstracts/search?q=Streptococcus%20gordonii" title=" Streptococcus gordonii"> Streptococcus gordonii</a>, <a href="https://publications.waset.org/abstracts/search?q=Streptococcus%20salivarius" title=" Streptococcus salivarius"> Streptococcus salivarius</a> </p> <a href="https://publications.waset.org/abstracts/61174/oral-microflora-and-the-risk-of-dental-caries-in-portuguese-children" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61174.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> The Coexistence of Dual Form of Malnutrition among Portuguese Institutionalized Elderly People</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20Ca%C3%A7ador">C. Caçador</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20J.%20Reis%20Lima"> M. J. Reis Lima</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Oliveira"> J. Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20J.%20Veiga"> M. J. Veiga</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Teixeira%20Ver%C3%ADssimo"> M. Teixeira Veríssimo</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Ramos"> F. Ramos</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20C.%20Castilho"> M. C. Castilho</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Teixeira-Lemos"> E. Teixeira-Lemos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present study we evaluated the nutritional status of 214 institutionalized elderly residents of both genders, aged 65 years and older of 11 care homes located in the district of Viseu (center of Portugal). The evaluation was based on anthropometric measurements and the Mini Nutritional Assessment (MNA) score. The mean age of the subjects was 82.3 ± 6.1 years-old. Most of the elderly residents were female (72.0%). The majority had 4 years of formal education (51.9%) and was widowed (74.3%) or married (14.0%). Men presented a mean age of 81.2±8.5 years-old, weight 69.3±14.5 kg and BMI 25.33±6.5 kg/m2. In women, the mean age was 84.5±8.2 years-old, weight 61.2±14.7 kg and BMI 27.43±5.6 kg/m2. The evaluation of the nutritional status using the MNA score showed that 24.0% of the residents show a risk of undernutrition and 76.0% of them were well nourished. There was a high prevalence of obese (24.8%) and overweight residents (33.2%) according to the BMI. 7.5% were considered underweight. We also found that according to their waist circumference measurements 88.3% of the residents were at risk for cardiovascular disease (CVD) and 64.0% of them presented very high risk for CVD (WC≥88 cm for women and WC ≥102 cm for men). The present study revealed the coexistence of a dual form of malnutrition (undernourished and overweight) among the institutionalized Portuguese concomitantly with an excess of abdominal adiposity. The high prevalence of residents at high risk for CVD should not be overlooked. Given the vulnerability of the group of institutionalized elderly, our study highlights the importance of the classification of nutritional status based on both instruments: the BMI and the MNA. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nutritional%20satus" title="nutritional satus">nutritional satus</a>, <a href="https://publications.waset.org/abstracts/search?q=MNA" title=" MNA"> MNA</a>, <a href="https://publications.waset.org/abstracts/search?q=BMI" title=" BMI"> BMI</a>, <a href="https://publications.waset.org/abstracts/search?q=elderly" title=" elderly"> elderly</a> </p> <a href="https://publications.waset.org/abstracts/11514/the-coexistence-of-dual-form-of-malnutrition-among-portuguese-institutionalized-elderly-people" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11514.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">324</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">51</span> Impact of Protean Career Attitude on Career Success with the Mediating Effect of Career Insight</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prabhashini%20Wijewantha">Prabhashini Wijewantha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study looks at the impact of protean career attitude of employees on their career success and next it looks at the mediation effect of career insights on the above relationship. Career success is defined as the accomplishment of desirable work related outcomes at any point in person’s work experiences over time and it comprises of two sub variables, namely, career satisfaction and perceived employability. Protean career attitude was measured using the eight items from the Self Directedness subscale of the Protean Career Attitude scale developed by Briscoe and Hall, where as career satisfaction was measured by the three item scale developed by Martine, Eddleston, and Veiga. Perceived employability was also evaluated using three items and career insight was measured using fourteen items that were adapted and used by De Vos and Soens. Data were collected from a sample of 300 mid career executives in Sri Lanka deploying the survey strategy and data were analyzed using the SPSS and AMOS software version 20.0. A preliminary analysis of data was initially performed where data were screened and reliability and validity were ensured. Next a simple regression analysis was performed to test the direct impact of protean career attitude on career success and the hypothesis was supported. The Baron and Kenney’s four steps, three regressions approach for mediator testing was used to calculate the mediation effect of career insight on the above relationship and a partial mediation was supported by the data. Finally theoretical and practical implications are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=career%20success" title="career success">career success</a>, <a href="https://publications.waset.org/abstracts/search?q=career%20insight" title=" career insight"> career insight</a>, <a href="https://publications.waset.org/abstracts/search?q=mid%20career%20MBAs" title=" mid career MBAs"> mid career MBAs</a>, <a href="https://publications.waset.org/abstracts/search?q=protean%20career%20attitude" title=" protean career attitude "> protean career attitude </a> </p> <a href="https://publications.waset.org/abstracts/27602/impact-of-protean-career-attitude-on-career-success-with-the-mediating-effect-of-career-insight" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27602.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">360</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">50</span> Indoor Microclimate in a Historic Library: Considerations on the Positive Effect of Historic Books on the Stability of Indoor Relative Humidity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Magda%20Posani">Magda Posani</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Do%20Rosario%20Veiga"> Maria Do Rosario Veiga</a>, <a href="https://publications.waset.org/abstracts/search?q=Vasco%20Peixoto%20De%20Freitas"> Vasco Peixoto De Freitas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The presented research considers the hygrothermal data acquired in the municipal library of Porto. The library is housed in an XVIII century convent and, among all the rooms in the construction, one, in particular, was chosen for the monitoring campaign because of the presence of a great number of historic books. Temperature and relative humidity, as well as CO₂ concentration, were measured for six consecutive months, in the period December 24th - June 24th. The indoor environment of the building is controlled with a heating and cooling system that is turned on only during the opening hours of the library. The ventilation rate is low because the windows are kept closed, and there is no forced ventilation. The micro-climate is analyzed in terms of users’ comfort and degradation risks for historic books and valuable building surfaces. Through a comparison between indoor and outdoor measured hygrothermal data, indoor relative humidity appears very stable. The influence of the hygroscopicity of books on the stabilization of indoor relative humidity is therefore investigated in detail. The paper finally discusses the benefits given by the presence of historic books in libraries with intermittent heating and cooling. The possibility of obtaining a comfortable and stable indoor climate with low use of HVAC systems in these conditions, while avoiding degradation risks for books and historic building components, is further debated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=books" title="books">books</a>, <a href="https://publications.waset.org/abstracts/search?q=historic%20buildings" title=" historic buildings"> historic buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=hygroscopicity" title=" hygroscopicity"> hygroscopicity</a>, <a href="https://publications.waset.org/abstracts/search?q=relative%20humidity" title=" relative humidity"> relative humidity</a> </p> <a href="https://publications.waset.org/abstracts/110315/indoor-microclimate-in-a-historic-library-considerations-on-the-positive-effect-of-historic-books-on-the-stability-of-indoor-relative-humidity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110315.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">152</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">49</span> Financial Inclusion from the Perspective of Social Innovation: The Case of Colombia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maria%20Luisa%20Jaramillo">Maria Luisa Jaramillo</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Turriago%20Hoyos"> Alvaro Turriago Hoyos</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulf%20Thoene"> Ulf Thoene</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Financial inclusion has become a crucially important factor in debates on economic inequality posing challenges to the financial systems of countries around the world. Nowadays, governments and banks are concerned about creating products that allow access to wide sectors of the population. The creation of banking products by the financial sector for people with low incomes tends to lead to improvements in the quality of life of vulnerable parts of the population. In countries with notable social and economic inequalities financial inclusion is a key aspect for equitable economic growth. This study is based on the case of Colombia, which is a country with a strong record of economic growth over the past decade. Nevertheless, corruption, unemployment, and poverty contribute to uncertainty regarding the country’s future growth prospects. This study wants to explain the situation of financial exclusion and financial inclusion with respect to the Colombian case. Financial inclusion is going to be studied from the perspective of social innovation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Colombia" title="Colombia">Colombia</a>, <a href="https://publications.waset.org/abstracts/search?q=financial%20exclusion" title=" financial exclusion"> financial exclusion</a>, <a href="https://publications.waset.org/abstracts/search?q=financial%20inclusion" title=" financial inclusion"> financial inclusion</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20innovation" title=" social innovation"> social innovation</a> </p> <a href="https://publications.waset.org/abstracts/32076/financial-inclusion-from-the-perspective-of-social-innovation-the-case-of-colombia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32076.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">323</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">48</span> Improvement of Sandy Clay Soils with the Addition of Rice Husk Ash and Expanded Polystyrene Beads</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Quino">Alvaro Quino</a>, <a href="https://publications.waset.org/abstracts/search?q=Roger%20Trejo"> Roger Trejo</a>, <a href="https://publications.waset.org/abstracts/search?q=Gary%20Duran"> Gary Duran</a>, <a href="https://publications.waset.org/abstracts/search?q=Jordy%20Viso"> Jordy Viso</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article presents a study on the lightening and improvement of properties of soil extracted in the province of Talara in the department of Piura -Peru, to be used in filling in the construction of embankments for roads. This soft soil has a high percentage of elastic settlement and consolidation settlement. Currently, there are different methods that seek to mitigate the impact of this problem, which have achieved favorable results. As a contribution to these investigations, we propose the use of two lightening materials to be used in the filling of embankments; these materials are expanded polystyrene beads (EPS) and rice husk ash (RHA). Favorable results were obtained, such as a reduction of 14.34% of the volumetric weight, so the settlement will be reduced. In addition, it is observed that as the RHA dosage increases, the shear resistance increases. In this article, soil mechanics tests were performed to determine the effectiveness of this method in lightening and improving properties for the soil under study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sandy%20clay%20soils" title="sandy clay soils">sandy clay soils</a>, <a href="https://publications.waset.org/abstracts/search?q=rice%20husk%20ash" title=" rice husk ash"> rice husk ash</a>, <a href="https://publications.waset.org/abstracts/search?q=expanded%20polystyrene" title=" expanded polystyrene"> expanded polystyrene</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20soils" title=" soft soils"> soft soils</a> </p> <a href="https://publications.waset.org/abstracts/140613/improvement-of-sandy-clay-soils-with-the-addition-of-rice-husk-ash-and-expanded-polystyrene-beads" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140613.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">172</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">47</span> Solving Dimensionality Problem and Finding Statistical Constructs on Latent Regression Models: A Novel Methodology with Real Data Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sergio%20Paez%20Moncaleano">Sergio Paez Moncaleano</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Mauricio%20Montenegro"> Alvaro Mauricio Montenegro</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a novel statistical methodology for measuring and founding constructs in Latent Regression Analysis. This approach uses the qualities of Factor Analysis in binary data with interpretations on Item Response Theory (IRT). In addition, based on the fundamentals of submodel theory and with a convergence of many ideas of IRT, we propose an algorithm not just to solve the dimensionality problem (nowadays an open discussion) but a new research field that promises more fear and realistic qualifications for examiners and a revolution on IRT and educational research. In the end, the methodology is applied to a set of real data set presenting impressive results for the coherence, speed and precision. Acknowledgments: This research was financed by Colciencias through the project: 'Multidimensional Item Response Theory Models for Practical Application in Large Test Designed to Measure Multiple Constructs' and both authors belong to SICS Research Group from Universidad Nacional de Colombia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=item%20response%20theory" title="item response theory">item response theory</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensionality" title=" dimensionality"> dimensionality</a>, <a href="https://publications.waset.org/abstracts/search?q=submodel%20theory" title=" submodel theory"> submodel theory</a>, <a href="https://publications.waset.org/abstracts/search?q=factorial%20analysis" title=" factorial analysis"> factorial analysis</a> </p> <a href="https://publications.waset.org/abstracts/42131/solving-dimensionality-problem-and-finding-statistical-constructs-on-latent-regression-models-a-novel-methodology-with-real-data-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42131.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">372</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">46</span> Experimental Characterization of the AA7075 Aluminum Alloy Using Hot Shear Tensile Test</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Trunal%20Bhujangrao">Trunal Bhujangrao</a>, <a href="https://publications.waset.org/abstracts/search?q=Catherine%20Froustey"> Catherine Froustey</a>, <a href="https://publications.waset.org/abstracts/search?q=Fernando%20Veiga"> Fernando Veiga</a>, <a href="https://publications.waset.org/abstracts/search?q=Philippe%20Darnis"> Philippe Darnis</a>, <a href="https://publications.waset.org/abstracts/search?q=Franck%20%20Girot%20Mata"> Franck Girot Mata</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The understanding of the material behavior under shear loading has great importance for a researcher in manufacturing processes like cutting, machining, milling, turning, friction stir welding, etc. where the material experiences large deformation at high temperature. For such material behavior analysis, hot shear tests provide a useful means to investigate the evolution of the microstructure at a wide range of temperature and to improve the material behavior model. Shear tests can be performed by direct shear loading (e.g. torsion of thin-walled tubular samples), or appropriate specimen design to convert a tensile or compressive load into shear (e.g. simple shear tests). The simple shear tests are straightforward and designed to obtained very large deformation. However, many of these shear tests are concerned only with the elastic response of the material. It is becoming increasingly important to capture a plastic response of the material. Plastic deformation is significantly more complex and is known to depend more heavily on the strain rate, temperature, deformation, etc. Besides, there is not enough work is done on high-temperature shear loading, because of geometrical instability occurred during the plastic deformation. The aim of this study is to design a new shear tensile specimen geometry to convert the tensile load into dominant shear loading under plastic deformation. Design of the specimen geometry is based on FEM. The material used in this paper is AA7075 alloy, tested quasi statically under elevated temperature. Finally, the microstructural changes taking place during <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AA7075%20alloy" title="AA7075 alloy">AA7075 alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20recrystallization" title=" dynamic recrystallization"> dynamic recrystallization</a>, <a href="https://publications.waset.org/abstracts/search?q=edge%20effect" title=" edge effect"> edge effect</a>, <a href="https://publications.waset.org/abstracts/search?q=large%20strain" title=" large strain"> large strain</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20tensile%20test" title=" shear tensile test"> shear tensile test</a> </p> <a href="https://publications.waset.org/abstracts/129759/experimental-characterization-of-the-aa7075-aluminum-alloy-using-hot-shear-tensile-test" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129759.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">146</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">45</span> Comparative Study of Sub-Critical and Supercritical ORC Applications for Exhaust Waste Heat Recovery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Buket%20Boz">Buket Boz</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Diez"> Alvaro Diez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Waste heat recovery by means of Organic Rankine Cycle is a promising technology for the recovery of engine exhaust heat. However, it is complex to find out the optimum cycle conditions with appropriate working fluids to match exhaust gas waste heat due to its high temperature. Hence, this paper focuses on comparing sub-critical and supercritical ORC conditions with eight working fluids on a combined diesel engine-ORC system. The model employs two ORC designs, Regenerative-ORC and Pre-Heating-Regenerative-ORC respectively. The thermodynamic calculations rely on the first and second law of thermodynamics, thermal efficiency and exergy destruction factors are the fundamental parameters evaluated. Additionally, in this study, environmental and safety, GWP (Global Warming Potential) and ODP (Ozone Depletion Potential), characteristic of the refrigerants are taken into consideration as evaluation criteria to define the optimal ORC configuration and conditions. Consequently, the studys outcomes reveal that supercritical ORCs with alkane and siloxane are more suitable for high temperature exhaust waste heat recovery in contrast to sub-critical conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=internal%20combustion%20engine" title="internal combustion engine">internal combustion engine</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20Rankine%20cycle" title=" organic Rankine cycle"> organic Rankine cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20heat%20recovery" title=" waste heat recovery"> waste heat recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20fluids" title=" working fluids"> working fluids</a> </p> <a href="https://publications.waset.org/abstracts/74033/comparative-study-of-sub-critical-and-supercritical-orc-applications-for-exhaust-waste-heat-recovery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74033.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 class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Expansion of Cord Blood Cells Using a Mix of Neurotrophic Factors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Francisco%20Dos%20Santos">Francisco Dos Santos</a>, <a href="https://publications.waset.org/abstracts/search?q=Diogo%20Fonseca-Pereira"> Diogo Fonseca-Pereira</a>, <a href="https://publications.waset.org/abstracts/search?q=S%C3%ADlvia%20Arroz-Madeira"> Sílvia Arroz-Madeira</a>, <a href="https://publications.waset.org/abstracts/search?q=Henrique%20Veiga-Fernandes"> Henrique Veiga-Fernandes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Haematopoiesis is a developmental process that generates all blood cell lineages in health and disease. This relies on quiescent haematopoietic stem cells (HSCs) that are able to differentiate, self renew and expand upon physiological demand. HSCs have great interest in regenerative medicine, including haematological malignancies, immunodeficiencies and metabolic disorders. However, the limited yield from existing HSC sources drives the global need for reliable techniques to expand harvested HSCs at high quality and sufficient quantities. With the extensive use of cord blood progenitors for clinical applications, there is a demand for a safe and efficient expansion protocol that is able to overcome the limitations of the cord blood as a source of HSC. StemCell2MAXTM developed a technology that enhances the survival, proliferation and transplantation efficiency of HSC, leading the way to a more widespread use of HSC for research and clinical purposes. StemCell2MAXTM MIX is a solution that improves HSC expansion up to 20x, while preserving stemness, when compared to state-of-the-art. In a recent study by a leading cord blood bank, StemCell2MAX MIX was shown to support a selective 100-fold expansion of CD34+ Hematopoietic Stem and Progenitor Cells (when compared to a 10-fold expansion of Total Nucleated Cells), while maintaining their multipotent differentiative potential as assessed by CFU assays. The technology developed by StemCell2MAXTM opens new horizons for the usage of expanded hematopoietic progenitors for both research purposes (including quality and functional assays in Cord Blood Banks) and clinical applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cord%20blood" title="cord blood">cord blood</a>, <a href="https://publications.waset.org/abstracts/search?q=expansion" title=" expansion"> expansion</a>, <a href="https://publications.waset.org/abstracts/search?q=hematopoietic%20stem%20cell" title=" hematopoietic stem cell"> hematopoietic stem cell</a>, <a href="https://publications.waset.org/abstracts/search?q=transplantation" title=" transplantation"> transplantation</a> </p> <a href="https://publications.waset.org/abstracts/52602/expansion-of-cord-blood-cells-using-a-mix-of-neurotrophic-factors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52602.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">267</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">43</span> Family Firms Performance: Examining the Impact of Digital and Technological Capabilities using Partial Least Squares Structural Equation Modeling and Necessary Condition Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pedro%20Mota%20Veiga">Pedro Mota Veiga</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study comprehensively evaluates the repercussions of innovation, digital advancements, and technological capabilities on the operational performance of companies across fifteen European Union countries following the initial wave of the COVID-19 pandemic. Drawing insights from longitudinal data sourced from the 2019 World Bank business surveys and subsequent 2020 World Bank COVID-19 follow-up business surveys, our extensive examination involves a diverse sample of 5763 family businesses. In exploring the relationships between these variables, we adopt a nuanced approach to assess the impact of innovation and digital and technological capabilities on performance. This analysis unfolds along two distinct perspectives: one rooted in necessity and the other insufficiency. The methodological framework employed integrates partial least squares structural equation modeling (PLS-SEM) with condition analysis (NCA), providing a robust foundation for drawing meaningful conclusions. The findings of the study underscore a positive influence on the performance of family firms stemming from both technological capabilities and digital advancements. Furthermore, it is pertinent to highlight the indirect contribution of innovation to enhanced performance, operating through its impact on digital capabilities. This research contributes valuable insights to the broader understanding of how innovation, coupled with digital and technological capabilities, can serve as pivotal factors in shaping the post-COVID-19 landscape for businesses across the European Union. The intricate analysis of family businesses, in particular adds depth to the comprehension of the dynamics at play in diverse economic contexts within the European Union. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=digital%20capabilities" title="digital capabilities">digital capabilities</a>, <a href="https://publications.waset.org/abstracts/search?q=technological%20capabilities" title=" technological capabilities"> technological capabilities</a>, <a href="https://publications.waset.org/abstracts/search?q=family%20firms%20performance" title=" family firms performance"> family firms performance</a>, <a href="https://publications.waset.org/abstracts/search?q=innovation" title=" innovation"> innovation</a>, <a href="https://publications.waset.org/abstracts/search?q=NCA" title=" NCA"> NCA</a>, <a href="https://publications.waset.org/abstracts/search?q=PLS-SEM" title=" PLS-SEM"> PLS-SEM</a> </p> <a href="https://publications.waset.org/abstracts/176603/family-firms-performance-examining-the-impact-of-digital-and-technological-capabilities-using-partial-least-squares-structural-equation-modeling-and-necessary-condition-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176603.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">63</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">42</span> Bridging the Gap: Theoretical Challenges in Cognitive Translation Studies and the Language Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Marin">Alvaro Marin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper explores the challenges in Cognitive Translation Studies (CTS) conceptual development to accommodate professionals’ perceptions in the language industry into CTS established theoretical apparatus, empirical research projects, and university pedagogical proposals. A comparative conceptual assessment framework is developed from a pluralist epistemological stance that promotes interdisciplinary explorations of the translation process. The framework is used to review key notions such as expertise or feedback, as understood by language industry stakeholders. This review is followed by an analysis of how these notions can enrich research constructs to be applied in empirical investigations of translators’ cognitive processes from an embedded, situated cognition perspective. Thus, it will be proposed to apply the conceptual assessment framework as an effort towards strengthening the interpretative research tools and bridging the gap between industry and academia. The conclusions of this analysis will serve as a basis to further discuss how professional practices, combined with our current knowledge about expertise development in cognitive science and Expertise Studies, can enhance the learning experience of university translation students and help them better understand the processes and requirements of professional cross-linguistic mediation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=language%20industry" title="language industry">language industry</a>, <a href="https://publications.waset.org/abstracts/search?q=cognitive%20translation%20studies" title=" cognitive translation studies"> cognitive translation studies</a>, <a href="https://publications.waset.org/abstracts/search?q=translation%20cognitive%20theory" title=" translation cognitive theory"> translation cognitive theory</a>, <a href="https://publications.waset.org/abstracts/search?q=translation%20teaching" title=" translation teaching"> translation teaching</a> </p> <a href="https://publications.waset.org/abstracts/107085/bridging-the-gap-theoretical-challenges-in-cognitive-translation-studies-and-the-language-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107085.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">158</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">41</span> Mental Contrasting with Implementation Intentions: A Metacognitive Strategy on Educational Context</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Paula%20Paulino">Paula Paulino</a>, <a href="https://publications.waset.org/abstracts/search?q=Alzira%20Matias"> Alzira Matias</a>, <a href="https://publications.waset.org/abstracts/search?q=Ana%20Margarida%20Veiga%20Sim%C3%A3o"> Ana Margarida Veiga Simão</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Self-regulated learning (SRL) directs students in analyzing proposed tasks, setting goals and designing plans to achieve those goals. The literature has suggested a metacognitive strategy for goal attainment known as Mental Contrasting with Implementation Intentions (MCII). This strategy involves Mental Contrasting (MC), in which a significant goal and an obstacle are identified, and Implementation Intentions (II), in which an "if... then…" plan is conceived and operationalized to overcome that obstacle. The present study proposes to assess the MCII process and whether it promotes students’ commitment towards learning goals during school tasks in sciences subjects. In this investigation, we intended to study the MCII strategy in a systemic context of the classroom. Fifty-six students from middle school and secondary education attending a public school in Lisbon (Portugal) participated in the study. The MCII strategy was explicitly taught in a procedure that included metacognitive modeling, guided practice and autonomous practice of strategy. A mental contrast between a goal they wanted to achieve and a possible obstacle to achieving that desire was instructed, and then the formulation of plans in order to overcome the obstacle identified previously. The preliminary results suggest that the MCII metacognitive strategy, applied to the school context, leads to more sophisticated reflections, the promotion of learning goals and the elaboration of more complex and specific self-regulated plans. Further, students achieve better results on school tests and worksheets after strategy practice. This study presents important implications since the MCII has been related to improved outcomes and increased attendance. Additionally, MCII seems to be an innovative process that captures students’ efforts to learn and enhances self-efficacy beliefs during learning tasks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=implementation%20intentions" title="implementation intentions">implementation intentions</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20goals" title=" learning goals"> learning goals</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20contrasting" title=" mental contrasting"> mental contrasting</a>, <a href="https://publications.waset.org/abstracts/search?q=metacognitive%20strategy" title=" metacognitive strategy"> metacognitive strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=self-regulated%20learning" title=" self-regulated learning"> self-regulated learning</a> </p> <a href="https://publications.waset.org/abstracts/142228/mental-contrasting-with-implementation-intentions-a-metacognitive-strategy-on-educational-context" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142228.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">241</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">40</span> Detecting Hate Speech And Cyberbullying Using Natural Language Processing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N%C3%A1dia%20Pereira">Nádia Pereira</a>, <a href="https://publications.waset.org/abstracts/search?q=Paula%20Ferreira"> Paula Ferreira</a>, <a href="https://publications.waset.org/abstracts/search?q=Sofia%20Francisco"> Sofia Francisco</a>, <a href="https://publications.waset.org/abstracts/search?q=Sofia%20Oliveira"> Sofia Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=Sidclay%20Souza"> Sidclay Souza</a>, <a href="https://publications.waset.org/abstracts/search?q=Paula%20Paulino"> Paula Paulino</a>, <a href="https://publications.waset.org/abstracts/search?q=Ana%20Margarida%20Veiga%20Sim%C3%A3o"> Ana Margarida Veiga Simão</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Social media has progressed into a platform for hate speech among its users, and thus, there is an increasing need to develop automatic detection classifiers of offense and conflicts to help decrease the prevalence of such incidents. Online communication can be used to intentionally harm someone, which is why such classifiers could be essential in social networks. A possible application of these classifiers is the automatic detection of cyberbullying. Even though identifying the aggressive language used in online interactions could be important to build cyberbullying datasets, there are other criteria that must be considered. Being able to capture the language, which is indicative of the intent to harm others in a specific context of online interaction is fundamental. Offense and hate speech may be the foundation of online conflicts, which have become commonly used in social media and are an emergent research focus in machine learning and natural language processing. This study presents two Portuguese language offense-related datasets which serve as examples for future research and extend the study of the topic. The first is similar to other offense detection related datasets and is entitled Aggressiveness dataset. The second is a novelty because of the use of the history of the interaction between users and is entitled the Conflicts/Attacks dataset. Both datasets were developed in different phases. Firstly, we performed a content analysis of verbal aggression witnessed by adolescents in situations of cyberbullying. Secondly, we computed frequency analyses from the previous phase to gather lexical and linguistic cues used to identify potentially aggressive conflicts and attacks which were posted on Twitter. Thirdly, thorough annotation of real tweets was performed byindependent postgraduate educational psychologists with experience in cyberbullying research. Lastly, we benchmarked these datasets with other machine learning classifiers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggression" title="aggression">aggression</a>, <a href="https://publications.waset.org/abstracts/search?q=classifiers" title=" classifiers"> classifiers</a>, <a href="https://publications.waset.org/abstracts/search?q=cyberbullying" title=" cyberbullying"> cyberbullying</a>, <a href="https://publications.waset.org/abstracts/search?q=datasets" title=" datasets"> datasets</a>, <a href="https://publications.waset.org/abstracts/search?q=hate%20speech" title=" hate speech"> hate speech</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20learning" title=" machine learning"> machine learning</a> </p> <a href="https://publications.waset.org/abstracts/142382/detecting-hate-speech-and-cyberbullying-using-natural-language-processing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142382.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">228</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">39</span> Drying Kinects of Soybean Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amanda%20Rithieli%20%20Pereira%20Dos%20Santos">Amanda Rithieli Pereira Dos Santos</a>, <a href="https://publications.waset.org/abstracts/search?q=Rute%20%20Quelvia%20De%20Faria"> Rute Quelvia De Faria</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20%20De%20Oliveira%20Cardoso"> Álvaro De Oliveira Cardoso</a>, <a href="https://publications.waset.org/abstracts/search?q=Anderson%20%20Rodrigo%20Da%20Silva"> Anderson Rodrigo Da Silva</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%89rica%20%20Le%C3%A3o%20Fernandes%20Ara%C3%BAjo"> Érica Leão Fernandes Araújo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study of the kinetics of drying has great importance for the mathematical modeling, allowing to know about the processes of transference of heat and mass between the products and to adjust dryers managing new technologies for these processes. The present work had the objective of studying the kinetics of drying of soybean seeds and adjusting different statistical models to the experimental data varying cultivar and temperature. Soybean seeds were pre-dried in a natural environment in order to reduce and homogenize the water content to the level of 14% (b.s.). Then, drying was carried out in a forced air circulation oven at controlled temperatures of 38, 43, 48, 53 and 58 ± 1 ° C, using two soybean cultivars, BRS 8780 and Sambaíba, until reaching a hygroscopic equilibrium. The experimental design was completely randomized in factorial 5 x 2 (temperature x cultivar) with 3 replicates. To the experimental data were adjusted eleven statistical models used to explain the drying process of agricultural products. Regression analysis was performed using the least squares Gauss-Newton algorithm to estimate the parameters. The degree of adjustment was evaluated from the analysis of the coefficient of determination (R²), the adjusted coefficient of determination (R² Aj.) And the standard error (S.E). The models that best represent the drying kinetics of soybean seeds are those of Midilli and Logarítmico. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=curve%20of%20drying%20seeds" title="curve of drying seeds">curve of drying seeds</a>, <a href="https://publications.waset.org/abstracts/search?q=Glycine%20max%20L." title=" Glycine max L."> Glycine max L.</a>, <a href="https://publications.waset.org/abstracts/search?q=moisture%20ratio" title=" moisture ratio"> moisture ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20models" title=" statistical models"> statistical models</a> </p> <a href="https://publications.waset.org/abstracts/67860/drying-kinects-of-soybean-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67860.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">627</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">38</span> Numerical Simulations on the Torsional Behavior of Multistory Concrete Masonry Buildings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Jose%20Cordova">Alvaro Jose Cordova</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsuan%20Teh%20Hu"> Hsuan Teh Hu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of concrete masonry constructions in developing countries has become very frequent, especially for domestic purpose. Most of them with asymmetric wall configurations in plan resulting in significant torsional actions when subjected to seismic loads. The study consisted on the finding of a material model for hollow unreinforced concrete masonry and a validation with experimental data found in literature. Numerical simulations were performed to 20 buildings with variations in wall distributions and heights. Results were analyzed by inspection and with a non-linear static method. The findings revealed that eccentricities as well as structure rigidities have a strong influence on the overall response of concrete masonry buildings. In addition, slab rotations depicted more accurate information about the torsional behavior than maximum versus average displacement ratios. The failure modes in low buildings were characterized by high tensile strains in the first floor. Whereas in tall buildings these strains were lowered significantly by higher compression stresses due to a higher self-weight. These tall buildings developed multiple plastic hinges along the height. Finally, the non-linear static analysis exposed a brittle response for all masonry assemblies. This type of behavior is undesired in any construction and the need for a material model for reinforced masonry is pointed out. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete%20damaged%20plasticity" title="concrete damaged plasticity">concrete damaged plasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete%20masonry" title=" concrete masonry"> concrete masonry</a>, <a href="https://publications.waset.org/abstracts/search?q=macro-modeling" title=" macro-modeling"> macro-modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20static%20analysis" title=" nonlinear static analysis"> nonlinear static analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=torsional%20capacity" title=" torsional capacity"> torsional capacity</a> </p> <a href="https://publications.waset.org/abstracts/93745/numerical-simulations-on-the-torsional-behavior-of-multistory-concrete-masonry-buildings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93745.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Feasibility Study for the Implementation of a Condition-Based Maintenance System in the UH-60 Helicopters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Santos%20Cabrera">Santos Cabrera</a>, <a href="https://publications.waset.org/abstracts/search?q=Halbert%20Yesid"> Halbert Yesid</a>, <a href="https://publications.waset.org/abstracts/search?q=Moncada%20Nino"> Moncada Nino</a>, <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Fernando"> Alvaro Fernando</a>, <a href="https://publications.waset.org/abstracts/search?q=Rincon%20Cuta"> Rincon Cuta</a>, <a href="https://publications.waset.org/abstracts/search?q=Yeisson%20Alexis"> Yeisson Alexis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work evaluates the feasibility of implementing a health and use monitoring system (HUMS), based on vibration analysis as a condition-based maintenance program for the UH60L 'Blackhawk' helicopters. The mixed approach used consists of contributions from national and international experts, the analysis of data extracted from the software (Meridium), the correlation of variables derived from the diagnosis of availability, the development, and application of the HUMS system, the evaluation of the latter through of the use of instruments designed for the collection of information using the DELPHI method and data capture with the device installed in the helicopter studied. The results obtained in the investigation reflect the context of maintenance in aerial operations, a reduction of operation and maintenance costs of over 2%, better use of human resources, improvement in availability (5%), and fulfillment of the aircraft’s security standards, enabling the implementation of the monitoring system (HUMS) in the condition-based maintenance program. New elements are added to the study of maintenance based on condition -specifically, in the determination of viability based on qualitative and quantitative data according to the methodology. The use of condition-based maintenance will allow organizations to adjust and reconfigure their strategic, logistical, and maintenance capabilities, aligning them with their strategic objectives of responding quickly and adequately to changes in the environment and operational requirements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20transportation%20sustainability" title="air transportation sustainability">air transportation sustainability</a>, <a href="https://publications.waset.org/abstracts/search?q=HUMS" title=" HUMS"> HUMS</a>, <a href="https://publications.waset.org/abstracts/search?q=maintenance%20based%20condition" title=" maintenance based condition"> maintenance based condition</a>, <a href="https://publications.waset.org/abstracts/search?q=maintenance%20blackhawk%20capability" title=" maintenance blackhawk capability"> maintenance blackhawk capability</a> </p> <a href="https://publications.waset.org/abstracts/135423/feasibility-study-for-the-implementation-of-a-condition-based-maintenance-system-in-the-uh-60-helicopters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135423.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">157</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">36</span> Development of Mg-Containing Hydroxyapatite-Based Bioceramics From Phosphate Rock for Bone Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sara%20Mercedes%20Barroso%20Pinz%C3%B3n">Sara Mercedes Barroso Pinzón</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20Jes%C3%BAs%20Caicedo%20Castro"> Álvaro Jesús Caicedo Castro</a>, <a href="https://publications.waset.org/abstracts/search?q=Antonio%20Javer%20S%C3%A1nchez%20Herencia"> Antonio Javer Sánchez Herencia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years there has been increased academic and industrial research into the development of orthopaedic implants with structural properties and functionality similar to mechanical strength, osseointegration, thermal stability and antibacterial capacity similar to bone structure. Hydroxyapatite has been considered for decades as an ideal biomaterial for bone regeneration due to its chemical and crystallographic similarity to the mineral structure bioapatites. However, the lack of trace elements in the hydroxyapatite structure confers very low mechanical and biological properties. Under this scenario, the objective of the research is the synthesis of hydroxyapatite with Mg from the francolite mineral present in phosphate rock from the central-eastern region of Colombia, taking advantage of the extraction of mineral species as natural precursors of Ca, P and Mg. The minerals present were studied, fluorapatite as the mineral of interest associated with magnesium carbonates and quartz. The chemical and mineralogical composition was determined by X-ray fluorescence (XRF) and X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX); the optimum conditions were established using the acid leaching mechanism in the wet concentration process. From the products obtained and characterised by XRD, XRF, SEM, FTIR, RAMAN, HAp-Mg biocomposite scaffolds are fabricated and the influence of Mg on morphometric parameters, mechanical and biological properties in the formed materials is evaluated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phosphate%20rock" title="phosphate rock">phosphate rock</a>, <a href="https://publications.waset.org/abstracts/search?q=hydroxyapatite" title=" hydroxyapatite"> hydroxyapatite</a>, <a href="https://publications.waset.org/abstracts/search?q=magnesium" title=" magnesium"> magnesium</a>, <a href="https://publications.waset.org/abstracts/search?q=biomaterials" title=" biomaterials"> biomaterials</a> </p> <a href="https://publications.waset.org/abstracts/184860/development-of-mg-containing-hydroxyapatite-based-bioceramics-from-phosphate-rock-for-bone-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184860.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">56</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">35</span> The Mechanical Characteristics of Rammed Earth with Plastic Fibers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Majdi%20Al%20Shdifat">Majdi Al Shdifat</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Chiachio"> Juan Chiachio</a>, <a href="https://publications.waset.org/abstracts/search?q=Esther%20Puertas"> Esther Puertas</a>, <a href="https://publications.waset.org/abstracts/search?q=Mar%C3%ADa%20L.%20Jal%C3%B3n"> María L. Jalón</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20Blanca-Hoyos"> Álvaro Blanca-Hoyos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the world has begun to adopt more sustainable practices in response to today's environmental and climate challenges. The construction sector is one of the most resource-intensive among others, so researchers are testing different types of materials with different processes and methodologies to achieve more environmentally and sustainably friendly buildings. Plastic is one of the most harmful materials for the environment. The global production of plastics has increased dramatically in recent decades, and it is one of the most widely used materials. However, plastic waste is not biodegradable and has a chemical composition that is stable for many years in the environment, both on land and in water bodies. Recycled plastics have been tested to be used in construction in many ways to reduce the amount of plastic in the environment and the use of raw materials in construction. In this context, the main objective of this research is to test the use of plastic fibers with one of the most promising materials to replace cement, which is rammed earth. In fact, rammed earth is considered one of the most environmentally friendly materials due to its use of local raw materials, recyclability, and low embodied energy. In this research, three different types of plastic fibers were used. Then, the blends were evaluated by considering their mechanical properties, including compressive strength and tensile strength. In addition, the non-destructive ultrasonic wave velocity was measured. The result shows excellent potential for the use of plastic fibers in rammed earth, especially in terms of compressive strength. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mechanical%20characterization" title="mechanical characterization">mechanical characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=plastic%20fibers%20reinforcement" title=" plastic fibers reinforcement"> plastic fibers reinforcement</a>, <a href="https://publications.waset.org/abstracts/search?q=rammed%20earth" title=" rammed earth"> rammed earth</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20material" title=" sustainable material"> sustainable material</a> </p> <a href="https://publications.waset.org/abstracts/171927/the-mechanical-characteristics-of-rammed-earth-with-plastic-fibers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171927.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">73</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">34</span> The Mechanical Properties of Rammed Earth with Plastic Fibers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Majdi%20Al%20Shdifat">Majdi Al Shdifat</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Chiachio"> Juan Chiachio</a>, <a href="https://publications.waset.org/abstracts/search?q=Esther%20Puertas"> Esther Puertas</a>, <a href="https://publications.waset.org/abstracts/search?q=Mar%C3%ADa%20L.%20Jal%C3%B3n"> María L. Jalón</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20Blanca-Hoyos"> Álvaro Blanca-Hoyos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the world has begun to adopt more sustainable practices in response to today's environmental and climate challenges. The construction sector is one of the most resource-intensive among others, so researchers are testing different types of materials with different processes and methodologies to achieve more environmentally and sustainably friendly buildings.Plastic is one of the most harmful materials for the environment. The global production of plastics has increased dramatically in recent decades, and it is one of the most widely used materials. However, plastic waste is not biodegradable and has a chemical composition that is stable for many years in the environment, both on land and in water bodies. Recycled plastics have been tested to be used in construction in many ways to reduce the amount of plastic in the environment and the use of raw materials in construction. In this context, the main objective of this research is to test the use of plastic fibers with one of the most promising materials to replace cement, which is rammed earth. In fact, rammed earth is considered one of the most environmentally friendly materials due to its use of local raw materials, recyclability, and low embodied energy. In this research, three different types of plastic fibers were used. Then, the blends were evaluated by considering their mechanical properties, including compressive strength and tensile strength. In addition, the non-destructive ultrasonic wave velocity was measured. The result shows excellent potential for the use of plastic fibers in rammed earth, especially in terms of compressive strength. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mechanical%20characterization" title="mechanical characterization">mechanical characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=plastic%20fibers%20reinforcement" title=" plastic fibers reinforcement"> plastic fibers reinforcement</a>, <a href="https://publications.waset.org/abstracts/search?q=rammed%20earth" title=" rammed earth"> rammed earth</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20material" title=" sustainable material"> sustainable material</a> </p> <a href="https://publications.waset.org/abstracts/171963/the-mechanical-properties-of-rammed-earth-with-plastic-fibers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171963.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">69</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">33</span> Workforce Optimization: Fair Workload Balance and Near-Optimal Task Execution Order</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alvaro%20Javier%20Ortega">Alvaro Javier Ortega</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A large number of companies face the challenge of matching highly-skilled professionals to high-end positions by human resource deployment professionals. However, when the professional list and tasks to be matched are larger than a few dozens, this process result is far from optimal and takes a long time to be made. Therefore, an automated assignment algorithm for this workforce management problem is needed. The majority of companies are divided into several sectors or departments, where trained employees with different experience levels deal with a large number of tasks daily. Also, the execution order of all tasks is of mater consequence, due to some of these tasks just can be run it if the result of another task is provided. Thus, a wrong execution order leads to large waiting times between consecutive tasks. The desired goal is, therefore, creating accurate matches and a near-optimal execution order that maximizes the number of tasks performed and minimizes the idle time of the expensive skilled employees. The problem described before can be model as a mixed-integer non-linear programming (MINLP) as it will be shown in detail through this paper. A large number of MINLP algorithms have been proposed in the literature. Here, genetic algorithm solutions are considered and a comparison between two different mutation approaches is presented. The simulated results considering different complexity levels of assignment decisions show the appropriateness of the proposed model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=employees" title="employees">employees</a>, <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=industry%20management" title=" industry management"> industry management</a>, <a href="https://publications.waset.org/abstracts/search?q=workforce" title=" workforce"> workforce</a> </p> <a href="https://publications.waset.org/abstracts/123745/workforce-optimization-fair-workload-balance-and-near-optimal-task-execution-order" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/123745.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 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