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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
151

Intensivvårdssjuksköterskors upplevelser av att vårda patienter med covid-19 : En systematisk litteraturstudie

Hunko, Anna January 2022 (has links)
Bakgrund: Covid-19 pandemin åskådliggjorde att intensivvårdssjuksköterskor hade en avgörande roll i vårdarbetet under pandemin. Sjukdomens karaktär, det vill säga att covid-19 är en smittsam sjukdom, samt att många patienter blev kritiskt sjuka och inlagda på IVA samtidigt, överbelastade intensivvården. Dessa påverkade intensivvårdssjuksköterskors upplevelser av att vårda patienter med covid-19. Syftet: Att sammanställa intensivvårdssjuksköterskors upplevelser av att vårda patienter med covid-19. Metod: En systematisk litteraturöversikt med kvalitativ ansats. Dataanalysen inspirerades av Bettany-Saltikovs och McSherrys (2016) analysbeskrivning. Resultat: Fyra teman identifierades: Upplevelser relaterade till sjukdomens karaktär, Upplevelser relaterade till ett förändrat arbetssätt, Upplevelser relaterade till förändrad tillgång av resurser samt Upplevelser kring förändrade relationer. Slutsats: Intensivvårdssjuksköterskor upplevde att det var utmanande, utmattande och stressigt både fysiskt och psykiskt att vårda allvarligt sjuka patienter med covid-19. Eftersom väldigt många människor insjuknade av sjukdomen, blev intensivvården överbelastad. Etisk stress och känsla av vårdens avhumanisering kännetecknade intensivvårdssjuksköterskornas vårdarbete. Rädslan av att bli smittad eller exponera familjen för covid-19 påverkade deras liv både yrkesmässigt och privat. Intensivvårdssjuksköterskorna upplevde både stigmatisering och uppskattning från samhällets alla nivåer. / Bakgrund: Covid-19-pandemin tydliggjorde att intensivvårdssjuksköterskor spelat en viktig roll i vårdarbetet under pandemin. Sjukdomens natur, det vill säga att covid-19 är en smittsam sjukdom, och att många patienter blev kritiskt sjuka och samtidigt lades in på intensivvårdsavdelningar, överbelastade intensivvårdsavdelningarna. Detta påverkade intensivvårdssjuksköterskornas erfarenheter av vården av patienter med covid-19. Syfte: Att sammanfatta intensivvårdssjuksköterskornas erfarenheter av vården av patienter med covid-19. Metod: En systematisk litteraturöversikt med kvalitativ ansats. Dataanalysen inspirerades av Bettany-Saltikovs och McSherrys (2016) analysbeskrivning. Resultat: Fyra teman identifierades: Erfarenheter relaterade till sjukdomens natur, Erfarenheter relaterade till ett modifierat arbetssätt, Erfarenheter relaterade till förändrad tillgång till resurser och Erfarenheter om förändrade relationer. Slutsats: Intensivvårdssjuksköterskor upplevde att det var utmanande, ansträngande och stressande både fysiskt och psykiskt att ta hand om svårt sjuka patienter med covid-19. Eftersom ett stort antal människor insjuknade i sjukdomen blev intensivvårdsavdelningarna överbelastade. Moralisk nöd och en känsla av avhumanisering av vården präglade vårdarbetet hos intensivvårdssjuksköterskorna. Rädslan för att bli smittad eller utsätta sin familj för covid-19 påverkade deras liv både yrkesmässigt och i privatlivet. Intensivvårdssjuksköterskorna upplevde både stigma och uppskattning från alla nivåer i samhället.
152

Impact of task allocation challenges in Global Software Development

Konada, Aditya January 2023 (has links)
Context and Background: Global Software Development involves teams located in different geographical locations, time zones, and cultural contexts working together to accomplish a shared goal or complete a software project. These projects, which are conducted by teams in different locations, have been found to be more risky and challenging than those with teams in the same location. Therefore, it is important to have knowledge of the potential challenges of task allocation in global software development and strategies for addressing them to manage a GSD project successfully. Objective: This thesis aims to identify and tabulate all the Task allocation challenges in Global Software Development and synthesize the mitigation strategies for the challenges identified in task allocation in GSD. To evaluate the challenges that influence the task allocation process in GSD and perform an assessment to find the mitigation strategies for these challenges. Research Method: This is a systematic literature review of studies on empirical research on GSD, covering publications from 1999 to 2022. The focus of this research is specifically on challenges associated with task allocation in GSD projects. A survey was conducted to validate the identified challenges and gather suggestive mitigation strategies. This research aimed to identify task allocation challenges in GSD and suggest mitigation strategies in GSD projects. Results: This research has identified a total of 20 challenges related to task allocation in Global software development based on a review of publications from 1999 to 2022. Additionally, the mitigation strategies for the 20 identified challenges were found in a survey conducted as part of the research. The challenges and mitigation strategies are discussed in the paper.
153

A Comparative Study on Optimization Algorithms and its efficiency

Ahmed Sheik, Kareem January 2022 (has links)
Background: In computer science, optimization can be defined as finding the most cost-effective or notable achievable performance under certain circumstances, maximizing desired factors, and minimizing undesirable results. Many problems in the real world are continuous, and it isn't easy to find global solutions. However, computer technological development increases the speed of computations [1]. The optimization method, an efficient numerical simulator, and a realistic depiction of physical operations that we intend to describe and optimize for any optimization issue are all interconnected components of the optimization process [2]. Objectives: A literature review on existing optimization algorithms is performed. Ten different benchmark functions are considered and are implemented on the existing chosen algorithms like GA (Genetic Algorithm), ACO (Ant ColonyOptimization) Method, and Plant Intelligence Behaviour optimization algorithm to measure the efficiency of these approaches based on the factors or metrics like CPU Time, Optimality, Accuracy, and Mean Best Standard Deviation. Methods: In this research work, a mixed-method approach is used. A literature review is performed based on the existing optimization algorithms. On the other hand, an experiment is conducted by using ten different benchmark functions with the current optimization algorithms like PSO algorithm, ACO algorithm, GA, and PIBO to measure their efficiency based on the four different factors like CPU Time, Optimality, Accuracy, Mean Best Standard Deviation. This tells us which optimization algorithms perform better. Results: The experiment findings are represented within this section. Using the standard functions on the suggested method and other methods, the various metrics like CPU Time, Optimality, Accuracy, and Mean Best Standard Deviation are considered, and the results are tabulated. Graphs are made using the data obtained. Analysis and Discussion: The research questions are addressed based on the experiment's results that have been conducted. Conclusion: We finally conclude the research by analyzing the existing optimization methods and the algorithms' performance. The PIBO performs much better and can be depicted from the results of the optimal metrics, best mean, standard deviation, and accuracy, and has a significant drawback of CPU Time where its time taken is much higher when compared to the PSO algorithm and almost close to GA and performs much better than ACO algorithm.
154

Bibliometric Analysis, Case Analysis and Reappraisal on the Usability and Safety of Medical Devices

Ashwini Srinivasaprasad (14243777) 10 December 2022 (has links)
<p>    </p> <p>Healthcare is one of the most critical and valuable industries. This report is a systematic literature review of the usability and safety of medical devices used extensively for patient care. Safety has been broadly considered to mean in-patient safety and improving patient care. As part of the literature review and bibliometric analysis, a search of all the articles containing the keywords “medical device” AND “usability” AND “safety” was conducted on both Web of Science and Google Scholar (through Harzing’s Publish or Perish). The results that also contained the metadata were exported to VOS Viewer for cluster generation and co-citation analyses. As part of data mining, statistical tests such as regression analysis were conducted to find the causal relationship and significance between the variables. Following this, a core set of articles, some of which demonstrated strong ties to the topic at hand, were chosen from various databases and co-citation analyses. The core set also included a relevant chapter from the <em>Handbook of Human Factors and Ergonomics, Fourth Edition </em>by Salvendy. The articles were added to Mendeley and then exported to MAXQDA for the word-cloud generation. As part of the lexical search, Springer’s AuthorMapper and Digital Science’s Dimensions were used to extract trending keywords, author information, and metadata of relevant contributions made to the topic by institutions worldwide. The regression analysis revealed a significant tie between the database and the number of articles. Additionally, the regression showed that cites per year in Google Scholar had a significant effect on g-index. Finally, the discussion section included a case study of three different drug delivery systems. This aimed to perform a risk assessment of pre-existing “smart” medical devices. The analysis revealed that there is a high risk of malfunction in all the devices due to pre-programmed dose error. None of the devices were capable of “learning’ from patient behavior and adapting accordingly. Finally, the paper discusses Human-Computer Interaction and Human Factors Problems that exist in software medical devices that utilize AI/ML methodologies. Overall, the main keywords of human cognition, health informatics, precision medicine, applied ergonomics, and design safety showed high relevance within all the chosen articles. These keywords are highly reflective of the fields that are currently disrupting the conventional governance of healthcare. </p>
155

Analyzing research communities in Enterprise Architecture : A Data-Driven Systematic Literature Review / Analysering av forskargrupper inom Enterprise Architecture : En datadriven systematisk litteraturöversikt

Tham, Emelie January 2021 (has links)
The field of Enterprise Architecture (EA) emerged as an answer to the increasing complexity in managing and aligning the business-IT relationship within enterprises. Both practitioners and academics have expressed interest in the field, with a growing number of publicized works related to EA. In an attempt to provide an outlook of the current research landscape of EA, a systematic literature review was conducted. Citation data from the Scopus (Elsevier) API were automatically extracted and analyzed. By applying the Louvain method on the collected data, 8 research communities and their topic were identified: (1) Enterprise Engineering (I &amp; II), (2) Enterprise Architecture Management, (3) Enterprise Modelling, (4) IT Architecture, (5) Enterprise Integration, (6) Digital Transformation, and (7) Smart Cities. For each community, a summarized description with sub-community graphs as well as tables (describing the top authors, articles, and affiliation countries) are presented. Lastly, a comparison of the results and the EA trends identified by Gampfer et al. are presented. / Fältet Enterprise Architecture (EA) framkom som ett svar på den ökande komplexiteten i att hantera och anpassa affärs-IT-relationen inom företag. Både utövare och akademiker har uttryckt intresse för området, då antal publicerade verk relaterade till EA fortsätter att växa. I ett försök att ge en syn på det aktuella forskningslandskapet inom EA genomfördes ett systematisk litteraturöversikt. Citeringsdata från Scopus (Elsevier) API extraherades och analyserades automatiskt. Genom att tillämpa Louvain-metoden på insamlade datan identifierades 8 forskarsamhällen och deras ämnen: (1) Enterprise Engineering (I &amp; II), (2) Enterprise Architecture Management, (3) Enterprise Modelling, (4) IT Architecture, (5) Enterprise Integration, (6) Digital Transformation och (7) Smart Cities. För varje gemenskap gavs en sammanfattad beskrivning med undergruppsdiagram samt tabeller (över t.ex. de främsta författarna, artiklarna, och anslutningsländerna). Slutligen så gjordes en jämförelse av resultaten och de EA trender som identifierats av Gampfer et al.
156

Systematic Review of Driver Distraction in the Context of Advanced Driver Assistance Systems (ADAS) & Automated Driving Systems (ADS)

Hungund, Apoorva Pramod 28 October 2022 (has links)
Advanced Vehicle Systems promise improved safety and comfort for drivers. Steady advancements in technology are resulting in increasing levels of vehicle automation capabilities, furthering safety benefits. In fact, some of these vehicle automation systems are already deployed and available, but with promised benefits, such systems can potentially change driving behaviors. There is evidence that drivers have increased secondary task engagements while driving with automated vehicle systems, but there is a need for a clearer scientific understanding of any potential correlations between the use of automated vehicle systems and potentially negative driver behaviors. Therefore, this thesis aims to understand the state of knowledge on automated vehicle systems and their possible impact on drivers’ distraction behaviors. I have conducted two systematic literature reviews to examine this question. This thesis reports these reviews and examines the effects of secondary task engagement on driving behaviors such as take-over times, visual attention, trust, and workload, and discusses the implications on driver safety.
157

Psychic Distance ur ett e-handelsperspektiv : En systematisk litteraturstudie / Psychic Distance from an e-commerce perspective : A systematic literature review

Ticehurst Falk, Maja January 2023 (has links)
Denna studie undersöker internationaliseringsprocessen av e-handelsbolag med fokus på hur psychic distance, ett koncept som hanterar upplevda skillnader i bland annat språk, kultur och politik mellan olika marknader, spelar in i internationaliseringen. Syftet med studien är alltså att undersöka vad den befintliga litteraturen inom fältet för International Business studier säger om sambandet och vilken roll psychic distance spelar i internationaliseringen av e-handelsbolag. Detta kommer göras genom att besvara följande två forskningsfrågor: Vilken roll spelar psychic distance i e-handelsbolags internationaliseringsprocess? samt På vilket sätt har betydelsen av psychic distance förändrats i och med e-handeln? Studien baseras på teorierna kring psychic distance och nätverk från Uppsalamodellens internationaliseringsteorier, CAGE-ramverket samt e-handel och ”the virtuality trap” för att undersöka sambandet mellan dessa traditionella teorier och nya tekniska utvecklingar i form av e-handel. För att undersöka detta har en systematisk litteraturstudie baserad på 29 artiklar från fem olika journaler på fältet genomförts. Resultatet från denna analyserades sedan med hjälp av en tematisk analys för att identifiera mönster i materialet. Detta ledde fram till ett antal slutsatser och det konstaterades att psychic distance spelar en roll även i internationaliseringen av e-handelsbolag men inte riktigt samma roll som för traditionella bolag. Det konstaterades även att betydelsen av psychic distance har ändrats mycket i och med e-handeln och att även om teknik sägs minska avstånd så kan avstånden ändå inte helt elimineras. Slutligen konstateras att det finns mer att lära om psychic distance i e-handelssammanhang och att mer forskning på området är önskvärt. / This study examines the internationalization process of e-commerce companies with a focus on psychic distance, a concept that deals with perceived differences in, among other things, language, culture and politics in different markets and how this plays a role in internationalization. The purpose of the studies is to examine what the existing literature within the field of International Business studies says about the role psychic distance plays in the internationalization of e-commerce companies. This was done by answering the following two research questions: What role does psychic distance play in the internationalization process of e-commerce companies? as well as In what way has the meaning of psychic distance changed with e-commerce? The study is based on the theories around psychic distance and networks from the Uppsala model's internationalization theories, the CAGE-distance framework as well as e-commerce and the virtuality trap to examine the connection between these traditional theories and new technological developments in the form of e-commerce. To investigate this, a systematic literature review, based on 29 articles from five different scientific journals within the field of interest was conducted. The results from these were then analyzed using a thematic analysis to identify patterns in the material. This led to several conclusions, and it was established that psychic distance does plays a role in the internationalization of e-commerce companies, but not quite the same role as for traditional companies. It is also established that the meaning of psychic distance has changed a lot with e-commerce and that even though technology is said to reduces distance, the distance cannot be eliminated. Finally, it is established that there is more to learn about psychological distance in an e-commerce context and that more research in the area is desirable. This thesis is written in Swedish.
158

[pt] MODELANDO A DINÂMICA DE OPERAÇÕES HUMANITÁRIAS / [en] MODELLING THE DYNAMICS OF HUMANITARIAN OPERATIONS

LUIZA RIBEIRO ALVES CUNHA 27 September 2022 (has links)
[pt] Pesquisas no campo de Operações Humanitárias (Humanitarian Operations - HO) vem atraindo a atenção de acadêmicos e profissionais ao abranger o estudo de diversas ferramentas analíticas visando a melhora da resposta aos beneficiários. Diferentes estudos sugerem que a inserção de práticas e teorias tradicionais de logística e gestão de operações (Operation management – OM) - incluindo simulação, otimização, probabilidade e estatística - no contexto de desastres beneficiaria a cadeia de suprimentos humanitária. Uma vez que desastres são eventos complexos, graves e dinâmicos, com recursos humanos e materiais limitados, muitos stakeholders envolvidos e alto nível de incerteza de informação, a capacidade de gerir operações se faz necessária. Uma das técnicas mais comumente reconhecidas em OM é a simulação, sendo o método de Dinâmica de Sistemas (System Dynamics – SD) capaz de modelar representações simplificadas de realidades e obter informações valiosas sobre situações de complexidade dinâmica. O método fornece um conjunto de ferramentas, como mapeamento causal e modelagem de simulação, e permite avaliar os resultados de curto e longo prazo de decisões. Nesse contexto, a presente tese visa estudar a complexidade de HO através de SD. Para isso a tese conta com uma revisão sistemática da literatura (Systematic Literature Review – SLR) a fim de identificar o estado da arte, entregando uma taxonomia, um framework e uma agenda de pesquisa. Em seguida, duas operações são apresentadas, demonstrando a modelagem através de SD em contextos humanitários distintos e de alta relevância. A primeira operação estudada consiste na coleta e distribuição de doações para a população na base da pirâmide (Bottom of the Pyramid – BoP) do Rio de Janeiro, em meio a pandemia de COVID19. Realizamos uma survey e obtivemos 2155 respostas dos beneficiários. Os dados também foram obtidos diretamente com as organizações envolvidas na operação. Como resultado, demonstramos que aumentar o acesso a produtos de limpeza nas comunidades por meio de doações pode reduzir significativamente a transmissão do vírus SARS-CoV-2. Ademais, mostramos que as doações de alimentos podem aumentar a capacidade da população vulnerável de arcar com as necessidades, aliviando o estresse causado pela pandemia nesta parcela da população. Ademais, demostramos que quando todas as doações são na forma de vouchers/ dinheiro, a acessibilidade aumenta em 20 por cento em comparação com todas as doações físicas. Resultados que podem servir de base para formuladores de políticas ajudarem as comunidades vulneráveis, especialmente durante crises nas quais os recursos são escassos e devem ser explorados de forma eficiente. O segundo estudo consiste na operação do governo federal Brasileiro para receber, abrigar e interiorizar Venezuelanos no Brasil. Como o fluxo de Venezuelanos para o Brasil tem crescido e as consequências da pandemia se apresentam como uma preocupação com a capacidade da operação, a Operação Acolhida é modelada a fim de entender os gargalos de sua escalabilidade. Como resultado, demonstramos que: (i) o processo de interiorização é um gargalo, pois além da logística, é necessária a inserção socioeconômica dos Venezuelanos (por meio de vagas de emprego, por exemplo); (ii) a capacidade dos abrigos é um gargalo da operação, pois define uma fila de venezuelanos precisando de ajuda esperando para serem abrigados. / [en] Research in Humanitarian Operations (HO) has attracted the attention of academics and practitioners by applying analytical tools to improve response to beneficiaries. Different studies suggest that the integration of traditional practices and theories of logistics and operations management (OM) in the complex context of disasters would benefit the humanitarian supply chain. One of the most recognised techniques in OM is simulation, being System Dynamics (SD) a method capable of model simplified representations of realities and gain valuable insights into situations of dynamic complexity. In this context, this thesis aims to analyse the complexity of HO through SD. The thesis presents a systematic literature review (SLR) to identify the state of the art of the subject, delivering a taxonomy, a framework, and a research agenda. Then, two complex and dynamic operations are modelled through SD. The first operation involves collecting and distributing donations to the vulnerable population from Rio de Janeiro, Brazil, amid the COVID-19 pandemic. As a result, we demonstrated that: (i) increasing access to cleaning products in communities can significantly reduce COVID-19 transmission; (ii) food donations can increase the population s affordability; (iii) accessibility increases by 20 percent in vouchers/cash donations compared to all in-kind donations. The second one is the Brazilian operation to receive, shelter, and internalise Venezuelans. Since the flow of Venezuelans to Brazil has grown and, the pandemic aftermath presents itself as a concern for the operation capacity, Operation Welcome is modelled to understand the bottlenecks for its scalability. As a result, we demonstrate that: (i) the internalisation process is a bottleneck as, in addition to logistics, it is necessary the socio-economical insertion (through job vacancies, for example); (ii) shelters capacity is an operation bottleneck, as it defines a queue of needing assistance Venezuelans waiting to be sheltered.
159

Behavioral Transportation: The Role of Psychological, Cognitive, and Social Factors in Distracted Driving Behavior

Gabaldon, Janeth 07 1900 (has links)
Logistics 4.0 suggests that increased automation can enhance performance, while Logistics 5.0 emphasizes the advantages of a modern workforce that combines humans and emerging technologies. However, the logistics industry needs a deeper understanding of human factors, an area that has been overlooked so far. To bridge this research gap, this dissertation investigated distracted driving behavior among individuals involved in transportation and logistics-based applications. This investigation employed both qualitative and quantitative research methods. Essay 1 focuses on a systematic literature review (SLR) that comprehensively analyzes published research on self-response studies regarding distracted driving behavior. The study identifies five overarching categories of distractions: (a) cell phone-related, (b) technology-related, (c) nontechnology-related, (d) psychological, and (e) personality. The findings underscore the substantial research conducted on self-reported distractions associated with cell phones and technology. Essay 2 employs the protection motivation theory (PMT) to develop hypotheses that predict the engagement of young drivers in texting while driving (TWD). In addition to TWD, the survey also included cognitive failure to examine the indirect effects of PMT on TWD within a mediation framework. The results, obtained through structural equation modeling with 674 respondents aged 18-25, indicate that several factors including response cost, threat vulnerability, cognitive failure, self-efficacy, and threat severity influence TWD behavior. Essay 3 investigates the influence of young drivers' respect for safety, neutralization techniques, and polychronicity on distracted driving behavior (DDB), based on the cognitive dissonance theory (CDT). The findings, drawn from 326 respondents aged 22-29 years, indicate that drivers who prioritize safety (respect for safety) are less likely to engage in DDB. Lastly, Essay 4 takes a survey-based approach to explore how factors such as respect for safety, polychronicity, and cognitive failure influence the likelihood of engagement in distractions among industrial operators, specifically forklift drivers, in warehouse and distribution centers (WDCs). The study's results indicate that cognitive failure has a negative impact on forklift drivers' distracted driving behavior, while polychronic tendencies help drivers avoid engaging in distracted behavior.
160

Use of Videoconference Technology in the Social Engagement of Older Adults by Aging-in-Place Organizations

Alagood, John 12 1900 (has links)
This dissertation investigates videoconference technology adoption by aging-in-place organizations to facilitate the social engagement of older adults. It comprises three studies that examine the initiation and coordination of technology adoption by aging-in-place organizations and addresses the factors associated with successful adoption of relational videoconference technology by older adults. The first study is a systematic literature review exploring the role of aging-in-place organizations in social engagement of older adults through videoconference technology. The second study is a survey of adult relatives and friends of older adults regarding videoconference technology adoption by older adults during the COVID-19 pandemic and their experience with facilitating resources. It applies technology adoption theory and a structural equation model to characterize the role of aging-in-place organizations. The third study is a pilot test of a new online platform called Circular that is designed to support social engagement of older adults. Through these studies, this research extends the existing body of knowledge regarding modes to facilitate adoption of relational technology by older adults and to empower senior centers and other aging-in-place organizations as they seek to socially engage the aging members of their communities.

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