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Multi-scale strategies for physics-based modelling of elastic and inelastic behaviour of short fiber and continuous fiber reinforced composites
No full textComposietmaterialen hebben brede toepassingen in de luchtvaart, auto-industrie, windenergie, maritieme sector en elektronica-industrie vanwege hun unieke eigenschappen. Echter, hun complexe mechanisch gedrag vereist geavanceerde analytische en numerieke technieken. Deze scriptie richt zich op de ontwikkeling van fysisch gebaseerde multischaalmethoden voor kortevezel- en continuevezelcomposietmaterialen. Het onderzoek heeft als doel om rekentijden te verminderen, de noodzaak voor experimentele testen te minimaliseren en de afhankelijkheid van niet-fysieke materiaaleigenschappen te elimineren door uitsluitend te vertrouwen op intrinsieke kenmerken om het mechanische gedrag van composietmaterialen te voorspellen. Het onderzoek omvat de ontwikkeling van analytische en numerieke methoden om elastisch, elasto-plastisch en snelheidsafhankelijk gedrag van kortevezelcomposieten te voorspellen. Bovendien onderzoekt de scriptie de impact van schade in de lagen van een continuevezelcomposietlaminaat, wat waardevolle inzichten biedt in het mechanisch gedrag van deze laminaatstructuren in de aanwezigheid van matrixscheuren en/of delaminaties
Structural behaviour and safety of restrained prestressed concrete hollow core slabs in relation to robustness and fire design
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The symbolic crusade of policing drugs : an ethnography on local drug policing and the self-legitimacy of drug detectives
No full textDrug detectives are the guardians of the drug prohibition policy and the question is raised to what extent, and on what basis, drug detectives feel their power is morally correct. Ethnographic fieldwork, which included 40 epistemic-confrontational interviews, was carried out over 10 months in two cities in Belgium among drug detectives operating at street level and in local drug investigation units. The work of Michel Foucault inspired the theoretical and analytical framework of the research. The study finds that drug detectives derive their self-legitimacy primarily from subjectivation in the eradicative drug discourse and from endogenous elements such as being good at your ‘craft’ and seeking validation of this from colleagues. It is argued that an endogenous construction of self-legitimacy co-produces and strengthens some (dysfunctional) core characteristics of police culture. Furthermore, drug detectives’ underlying motivation is rarely fuelled by a belief in the effectiveness of their actions in reducing drug use or selling, but by the conviction that they have to take action because ‘otherwise things would get out of hand’. Building on these results, several societal and political implications are offered
Automatic detection of appropriate solution methods for the resource-constrained project scheduling problem via machine learning
No full textThe quest for improved ligands : a study of the functional plasticity of the glucocorticoid receptor
No full textThe wonderful world of histones and stem cells : a fairy tale written by mass spectrometry
No full textDigital exclusion and the welfare state : a systematic mismatch? An in-depth survey-based inquiry into citizens’ opportunities and difficulties with essential internet services
No full textThis doctoral dissertation offers an in-depth and nuanced view of survey research on digital inequalities and digital exclusion. First, by developing a new way to measure who is excluded from internet services and their associated benefits (e.g., finding a job). Second, by examining heterogeneity in inequalities in internet attitudes, access, skills, use experience, and digital exclusion within populations considered homogeneously vulnerable and non-vulnerable. Third, by investigating the role of socio-economic resources in digital exclusion in addition to inequalities in internet attitudes, access, skills and use experience