Evaluation of the particle geometry and interphase influence on the filler-matrix debonding process

Incorporation of rigid fillers into polymer matrices represents a widely used technique to obtain improved performance. The mechanical behavior finally obtained is closely related to a wide range of involved factors (filler type and size, internal structure, filler-matrix interaction, among others) and to activated dissipative mechanisms (debonding, plastic void growth, crazing, matrix yielding, etc). In this work, a debonding strength approach was applied for rigid particles (spherical, elliptical and fiber) surrounded by an interphase. The effect of interphase mechanical properties and thickness on the debonding process was investigated. The obtained results suggested a significant influence of the transition rigidity. In general, stiffer interphases promoted higher critical strength values. On the other hand, particle surrounded by a softer transition region displayed higher dissipated energy for all examined particle, except for spheres.Fil: Perez, Ezequiel Martin. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lauke, B.. No especifíca

"…een bepaalde bril die we moeten opzetten". Een onderzoek naar een mogelijke educatieve bijdrage van geestelijk verzorgers aan de bevordering van herstelondersteunende zorg in de psychiatrie

In de geestelijke gezondheidszorg is verandering gaande: steeds meer psychiatrische instellingen streven ernaar om herstelondersteunende zorg als leidend principe van hun dienstverlening te implementeren. In deze scriptie onderzoek ik in hoeverre hierdoor voor geestelijk verzorgers mogelijkheden ontstaan hun kennis en expertise over zingeving ten behoeve van deze nieuwe benadering in te brengen. Daarbij heb ik gefocust op een educatieve bijdrage in vorm van een module voor verpleegkundigen en begeleiders. Het gaat om een exploratieve case study bij Delta Psychiatrisch Centrum waarvoor ik vijf (ex)cliёnten en zes verpleegkundigen/begeleiders geïnterviewd heb. Uit de theorie komt naar voren dat binnen de herstelliteratuur zingevingselementen aanwezig zijn, echter redelijk versnipperd. De analyse van de empirische data bevestigt deze indruk. Met name binnen persoonlijk herstel, maar ook binnen maatschappelijk en functioneel herstel komen zingevingselementen aan bod. Wat betreft klinisch herstel zou verder onderzoek verricht moeten worden. Concluderend levert herstelondersteunende zorg tal van aangrijpingspunten voor geestelijk verzorgers om hun kennis op educatieve wijze in te brengen, en zich tegelijkertijd als beroepsgroep te profileren. Als eerste opzet heb ik een voorbeeld module vormgegeven

The placement of sound in artistic contexts

There are a range of compositional approaches and techniques to consider when producing work of a sonic nature; from decisions about source material and location, to set-up configurations and sound diffusion. The presented case studies will examine approaches taken by the composer for indoor and outdoor spaces and discuss the artistic intention of each piece within a specified space. The case study examples will range from contemporary theatrical sound designs to sound art performance and audio-visual installations. Comparisons will be made between the various disciplines of sound art in relation to theatre sound in order to seek common ground and the suggestion of a sharing of practice

Hepatitis B virus infection and the immune response: The big questions

Clinical events and the host immune response during hepatitis B virus (HBV) infection are intricately linked. Despite decades of research, important questions concerning the immunopathogenesis of chronic HBV infection remain unanswered. For example, it is unclear which immune parameters facilitate persistence, and if HBV can be completely cleared from the human liver. Recent technological breakthroughs now allow researchers to address these seemingly basic, but essential questions surrounding HBV immunity. It will be important to better define the molecular underpinnings of immune cell function and dysfunction during chronic disease and in controlled infection, with particular focus on the liver, as little information is available on the intrahepatic compartment. In the near future, it may be possible to solve some of the controversy surrounding the immune responses to HBV, and establish the features of both the innate and adaptive arms of the immune system required to achieve sustained control of HBV infection

Accessibility 2.0: people, policies and processes

The work of the Web Accessibility Initiative (WAI) is described in a set of technical guidelines designed to maximise accessibility to digital resources. Further activities continue to focus on technical developments, with current discussions exploring the potential merits of use of Semantic Web and Web 2.0 approaches.In this paper we argue that the focus on technologies can be counter-productive. Rather than seeking to enhance accessibility through technical innovations, the authors argue that the priority should be for a user-focussed approach, which embeds best practices through the development of achievable policies and processes and which includes all stakeholders in the process of maximising accessibility.The paper reviews previous work in this area and summarises criticisms of WAI’s approach. The paper further develops a tangram model which describes a pluralistic, as opposed to a universal, approach to Web accessibility, which encourages creativity and diversity in developing accessible services. Such diversity will need to reflect the context of usage, including the aims of a service (informational, educational, cultural, etc.), the users’ and the services providers’ environment.The paper describes a stakeholder approach to embedding best practices, which recognises that organisations will encounter difficulties in developing sustainable approaches by addressing only the needs of the end user and the Web developer. The paper describes work which has informed the ideas in this paper and plans for further work, including an approach to advocacy and education which coins the “Accessibility 2.0” term to describe a renewed approach to accessibility, which builds on previous work but prioritises the importance of the user. The paper concludes by describing the implications of the ideas described in this paper for WAI and for accessibility practitioner stakeholders

An den Grenzen der Archive. Archivarische Praktiken in Kunst und Wissenschaft

Peter Bexte, Valeska Bührer, Stephanie Sarah Lauke (Hgg.). Mit Beiträgen von Reem Akl, Lotte Arndt, Friedrich Balke, Peter Bexte, Lisa Bosbach, Valeska Bührer, Michael Crone, Susanne Foellmer, Paul Klimpel, Corinna Kühn, Stephanie Sarah Lauke, Boris Nieslony, Sven Spieker und Renate Wöhre