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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.
71

Multilingual Language Learning in EFL Education : A Systematic Literature review

Hermansson, Jim January 2020 (has links)
The aim of the present study was to give a systematic overview of research literature on how bilingual and plurilingual EFL learners at secondary and tertiary education acquire/learn English. By searching three databases, nine peer-reviewed articles were chosen, categorised and analysed. The results indicated that multilinguals use learning strategies, as well as using certain languages for different contexts and tasks. Proficiency might also affect when their languages were used, since proficiency influenced learning strategies. To improve the Swedish EFL education for multilinguals, teachers need to help their pupils to become aware of their own learning by reflecting and thinking about their language production. Teachers need to provide instructions to pupils of how to improve their metacognition, thus becoming more autonomous learners. For multilinguals to achieve this, translanguaging is an important part of EFL education. This means that the teacher-education also needs to educate teachers on how to instruct others in metacognition and other learning strategies. Further investigations concerning both the teachers’ perspective and additional research into multilinguals’ EFL learning are needed.
72

How children of parents with intellectual disabilities experience their everyday life : A systematic literature review from 1985 to 2017

Gilhuber, Christina January 2017 (has links)
Various findings indicate that children of parents with intellectual disabilities have a higher risk for various difficulties, but only few studies interview children for an account of their experiences. This study aimed at assessing how children of parents with intellectual disabilities reflected their upbringing and their everyday life regarding their parent’s disability. Eight studies were identified through a systematic literature review, with publication ranging from 1985 to 2017. Results show that the accounts contain both positive and negative experiences and reflect an ambivalent relationship towards the parents. The small population of the analyzed studies, as well as differences in the context and the method of the studies, allowed no general conclusions to be drawn. Further research is required to allow an evaluation of the experiences of children of parents with intellectual disabilities in a bigger context.
73

Digital Twins in Railways : State of the Art, Opportunities, and Guidelines

Dirnfeld, Ruth January 2022 (has links)
There is growing interest in the concept of digital twins (DTs) among software engineers and researchers. As an emerging topic, DTs are a promising paradigm to enhance the predictability, safety, and reliability of cyber-physical systems in different domains. Despite the increasing trend, it is continually challenging to decide the best approach to implement DTs. Moreover, to the best of the author's knowledge, it was found that there is a lack of conducted research and no systematic reviews on DTs in the transportation industry, especially in the area of railway systems. Therefore, following the systematic literature review method, this thesis work has identified 363 articles in four digital libraries, of which 60 primary articles were included to address three research questions. The review shows that most of the reviewed articles focus on the railway subarea maintenance and inspection, the DT enabling technology artificial intelligence is the most coupled technology. An in-depth analysis found that most of the articles apply machine learning algorithms and techniques in DTs to detect faults, predict failures, make automated decisions, and monitor health status to optimize railway systems. It was also found that interoperability is the most discussed challenge, where the difficulty is to transmit operational data in real-time and also achieve real-time decision making. Furthermore, the analysis shows several opportunities and advantages of DTs, such as reducing maintenance costs and the positive contribution to a reduction in freight transport by road. Finally, based on the findings of the conducted review, a guideline to support the design of a DT for predictive maintenance in railways in the form of a flowchart is presented and explained.
74

Understanding the software engineering challenges in blockchain technology: A systematic literature review

Koraish, Zackarias, Lustig Lindström, Olivia January 2022 (has links)
Blockchain technology has gained significant interest during the previous years and, to some extent, is accredited as a universal solution to enabling online transactions between unknown parties without the need for a central authority. However, as we have yet to see widespread blockchain adoption in government or industrial settings, the question arises: What are the technical challenges hindering blockchain adoption? To this end, a systematic literature review is conducted on 29 academic papers researching software engineering challenges in blockchaintechnology. Initially, the papers are inductively analysed to elucidate and identify the challenges frequently discussed in academic literature. Furthermore, a theoretical framework is produced by drawing from the models mainly used in traditional software development, followed by deductive analysis to map out the software engineering activities related to the challenges. Twenty-four challenges are identified, with 12 relating to smart contracts, 11 to blockchain, and 1 to decentralised applications. The most frequently addressed software engineering activity is design, followed by testing.
75

Resilient Systems : Metrics to Measure Resilience

Vestman, Denise Jasmine Teresia January 2022 (has links)
As our society becomes more dependent on different types of software systems, it is vital that they operate normally under all types of stress. System resilience is a growing subject within computer science and the tech industry. Resilience can be defined as the persistence of dependability when facing change, for example against failures and attacks. During the last few years, a lot of research has been done investigating how to engineer a resilient system, but there seems to be no work reviewing how to actually measure resilience in a software system. By conducting a systematic literature review (SLR) this thesis aims to identify and evaluate different types of methods and metrics to measure system resilience.
76

Reuse in Self-Adaptive Software Systems: A Literature Review / Återanvändning i Självadaptiva Programvarusystem: En litteraturöversikt

Dirnfeld, Ruth January 2021 (has links)
Software engineers and researchers in the field are constantly developing new technologies to manage the complexity of current software systems. There is an increasing need for mechanisms that can deal with dynamics in the systems' environment, goals, and requirements. Self-adaptive software systems are a solution to manage the complexity caused by dynamics or runtime variations. Software reuse is a classical solution to deal with complexity and increase the quality of a system in a systematic and efficient way. Despite the large amount of research on self-adaptation, no systematic study has been found, which surveys and reports the application of reuse methods and techniques for the development of self-adaptive software systems. A systematic analysis of reuse methods and techniques for the development of self-adaptive systems is interesting as it provides useful insights for researchers and practitioners in the self-adaptive area. This study systematically reviews relevant research work published between the years 2000 and 2020 at eight well-known venues on self-adaptation and software engineering. By following the systematic literature review method, 97 studies were reviewed and 40 primary studies identified for addressing the research questions. The main objectives of the review are 1) to collect and analyse the reuse-based methods studied and applied for the design and development of self-adaptive software systems, 2) analyse the challenges in the application of reuse-based methods for the development of self-adaptive software systems. The review shows that most of the analysed studies support reuse with component-based software engineering. The primary studies propose different reuse-based methods to allow faster and simpler development of self-adaptive systems. Furthermore, the analysis shows that the reviewed studies report several challenges related to the configuration process, design, performance and uncertainty in the application of reuse methods for the development of self-adaptive systems.
77

Reuse in Self-Adaptive Software Systems: A Literature Review

Dirnfeld, Ruth January 2021 (has links)
Software engineers and researchers in the field are constantly developing new technologies to manage the complexity of current software systems. There is an increasing need for mechanisms that can deal with dynamics in the systems’ environment, goals, and requirements. Self-adaptive software systems are a solution to manage the complexity caused by dynamics or runtime variations. Software reuse is a classical solution to deal with complexity and increase the quality of a system in a systematic and efficient way. Despite the large amount of research on self-adaptation, no systematic study has been found, which surveys and reports the application of reuse methods and techniques for the development of self-adaptive software systems. A systematic analysis of reuse methods and techniques for the development of self-adaptive systems is interesting as it provides useful insights for researchers and practitioners in the self-adaptive area. This study systematically reviews relevant research work published between the years 2000 and 2020 at eight well-known venues on self-adaptation and software engineering. By following the systematic litera-ture review method, 97 studies were reviewed and 40 primary studies identi-fied for addressing the research questions. The main objectives of the review are 1) to collect and analyse the reuse-based methods studied and applied for the design and development of self-adaptive software systems, 2) analyse the challenges in the application of reuse-based methods for the development of self-adaptive software systems. The review shows that most of the analysed studies support reuse with component-based software engineering. The pri-mary studies propose different reuse-based methods to allow faster and sim-pler development of self-adaptive systems. Furthermore, the analysis shows that the reviewed studies report several challenges related to the configura-tion process, design, performance and uncertainty in the application of reuse methods for the development of self-adaptive systems.
78

Requirement prioritization in Software Engineering : A Systematic Literature Review on Techniques and Methods / Prioritering av krav inom programvaruteknik : En systematisk litteraturöversikt om tekniker och metoder

Rashdan, Adam January 2021 (has links)
The present study provides a systematic overview of the most important software requirement prioritization techniques. Software requirement prioritization is a process in software engineering that precludes the actual development of software application programs and deals with assigning priorities to single requirements to define the order of their implementation. The study aims to help researchers and practitioners in deciding about the right technique since each has its advantages and limitations. Compared to the existing reviews, the current one not only captures the most promising techniques but the more general trends behind them. The study utilizes the review protocol method that aims to answer four research questions about the most popular techniques, their taxonomy, their limitations, and involved processes. The empirical data was collected from six databases for scientific manuscripts and put under scrutiny to identify the most relevant and elaborated papers. The results from 53 selected manuscripts and 106 discovered techniques demonstrate that there is evidence of a gradual shift from purely manual elicitation methods to computed-assisted and/or algorithmic ones.
79

Det brinner i bröstet : En systematisk litteraturstudie om patientens upplevelse av symtom i samband med hjärtinfarkt prehospitalt

De Geer Sahlberg, Freddie, Michalska, Aleksandra January 2022 (has links)
Bakgrund: Hjärtinfarkt är en av de ledande dödsorsakerna i världen. En snabb och effektiv transport till Percutan Coronar Intervention kan reducera vävnadsskador i hjärtat och minska risker för komplikationer i efterförloppet. Det är därför viktigt att kunna känna igen symtom och tidigt söka hjälp. Syfte: Syftet med studien var att belysa patientens upplevelse av symtom vid hjärtinfarkt prehospitalt. Metod: En systematisk litteraturöversikt genomfördes. Artiklarna har tagits fram i databaserna PubMed och CINAHL. Sexton kvalitativa artiklar inkluderas i studien. Resultat: Tre teman samt sju subteman uppstod your analysen: (1) Symtomförlopp: från osäkerhet till övertygelse med efterföljande subtema: Smärtans karaktär, (2) Faktorer som bidrar till försening av vård, med subteman: Förnekelse, Okunskap, Tillskriva symtom ofarliga orsaker samt Strida mot smärtan på egen hand (3) När hela ens existens påverkas med följande subteman: Smärtans påverkan på det dagliga livet samt Dödsångest och rädsla. Resultatet visade att patienterna upplevde en mängd olika symtom vid hjärtinfarkt. Dessa symtom förekom i olika variationer, allt från stark och tydlig smärta i bröstet till svårtolkade symtom ifrån hela kroppen. Resultatet visade även att patienternas tidigare kunskap om hjärtinfarkt är bristfällig och försenar uppsökande av vård. Den religiösa tron har stor betydelse beträffande synen på sjukdomen och döden. Slutsats: Resultatet visade att det är en mångfacetterad symtomupplevelse. Hur dessa tolkas och reageras på av patienten var avgörande för deras beslut om när vård skulle sökas. Det visar också på vikten av att allmänheten besitter kunskap om tidiga varningssignaler för hjärtinfarkt, för att kunna agera snabbt och kontakta larmcentralen. / Bakgrund: Hjärtinfarkt är en av de främsta dödsorsakerna globalt. Snabb och effektiv transport till Percutan Coronar Intervention kan minska hjärtvävnadsskador och risker för framtida komplikationer. Det är därför viktigt att känna igen symtom och söka hjälp tidigt. Avsikt: Illustrera patientens erfarenhet av hjärtinfarkt symtom i prehospital kontext. Metod: En systematisk genomgång genomfördes i databaser pubmed och CINAHL. Sexton artiklar med kvalitativ design valdes ut. Resultat: Tre teman och sju subthemes uppstod från analysen: (1) Sekvens av symtom: från osäkerhet till övertygelse, med subthemes: Smärtans natur (2) Faktorer som bidrar till fördröjd vård, med subthemes: Denial, Ignorance, Attribut symptom till ofarliga orsaker och Bekämpa smärtan på egen hand (3) När hela existensen påverkas med subthemes: Smärtans inverkan på det dagliga livet och dödens ångest och rädsla. Resultaten visade att patienter kan uppleva en mängd olika symtom under en hjärtinfarkt, som uppstår allt från stark och tydlig bröstsmärta till svårtolkade symtom från hela kroppen. Resultaten visar också att patienternas tidigare kunskaper om hjärtinfarkt är bristfälliga och förseningar i vårdsökandet. Religiös tro är av stor betydelse för synen på sjukdom och död. Slutsats: Resultatet visar att den mångfacetterade symptomupplevelsen, tillsammans med patienternas olika tolkningar och reaktioner, var avgörande för när man bestämde sig för att söka vård. Det är därför viktigt att allmänheten känner igen varningssignaler om hjärtinfarkter tidigt för att agera snabbt och kontakta akutsjukvårdscentralen.
80

Kvinnors upplevelser efter genomförd mastektomi vid bröstcancer : En litteraturstudie

Sjöö, Jennifer, Berts, Ida January 2022 (has links)
Bakgrund: Mastektomi är det vanligaste kirurgiska behandlingsformen vid bröstcancer och innebär att bröstkörtelvävnad avlägsnas. Allt fler yngre kvinnor diagnostiseras med bröstcancer. Detta kan komma att påverka kvinnans identitet genom kroppsuppfattning, självkänsla, sexuella samliv samt relationer. Det är operationssjuksköterskans intresse att förstå vad den individuella patienten upplever, för att efter bästa förmåga kunna genomföra en god perioperativ omvårdnad. Syfte: Studiens syfte var att beskriva kvinnors upplevelser efter genomförd mastektomi vid bröstcancer. Metod: En systematisk litteraturstudie där nitton vetenskapliga artiklar med kvalitativ design från databaserna Cinahl, PsychINFO och PubMed har analyserats med hjälp av Bettany-Saltikov och McSherry analysmetod. Resultat: I analysprocessen framkom det två kategorier, Den nya kroppen samt Den förlorade kroppen. Varav varje kategori innefattade fyra subkategorier. Den nya kroppen beskriver skapandet av en ny identitet genom acceptans och bearbetning av den förlorade kroppen. Genom dessa kategorier växte det fram ett tema, Vägen till det nya livet. Slutsats: Kvinnor upplever positiva och negativa känslor samt psykiska och fysiska förändringar efter en mastektomi. Självförtroendet och kroppsbilden kan förändras så att kvinnligheten och sexualiteten utmanas. Varje kvinnas upplevelse är unik och avspeglar varje kvinnas livsvärld och levda kropp. Operationssjuksköterskan behöver därför skapa en trygghet under den perioperativa vården. / Bakgrund: Mastektomi är den vanligaste kirurgiska behandlingen för bröstcancer och innebär avlägsnande av bröstkörtelvävnad. Allt fler yngre kvinnor diagnostiseras med bröstcancer. Detta kan påverka kvinnans identitet genom kroppsuppfattning, självkänsla, sexuell intimitet och relationer. Det är kirurgsjuksköterskans intresse att förstå vad den enskilda patienten upplever, att kunna utföra god perioperativ vård. Syfte: Syftet med studien var att beskriva kvinnors erfarenheter efter att ha utfört mastektomi relaterad till bröstcancer. Metod: En systematisk litteraturstudie där nitton vetenskapliga artiklar med kvalitativ design från databaserna Cinahl, PsychINFO och PubMed har analyserats med analysmetoden Bettany-Saltikov och McSherry. Resultat: Under analysprocessen uppstod två kategorier, Den nya kroppen och den förlorade kroppen. Varje kategori innehöll fyra underkategorier. Det nya organet beskriver skapandet av en ny identitet genom acceptans och bearbetning av den förlorade kroppen. Genom dessa kategorier framkom ett tema, vägen till det nya livet. Slutsats: Kvinnor upplever positiva och negativa känslor samt mentala och fysiska förändringar efter en mastektomi. Självförtroende och kroppsuppfattning kan förändras på ett sätt där kvinnlighet och sexualitet utmanas. Varje kvinnas erfarenhet är unik och återspeglar varje kvinnas livsvärld och levande kropp. Därför måste den kirurgiska sjuksköterskan skapa en känsla av säkerhet under den perioperative vården.

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