Pixel-based Optical Feedback to Correct Ageing and Non-uniformities in Large-area Displays

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Electronic compensation for fringe-field effects in VAN LCOS microdisplays

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VAN LCOS microdisplays: a decade of technological evolution

Abstract—Microdisplays of the liquid crystals on silicon (LCOS) type have gone through a rapid evolution during the last decade. We present an overview of how vertically aligned nematic (VAN) LCOS have evolved from an attractive, but notoriously difficult and even infamous technology, to the mainstream microdisplay technology that it is today. At the same time, we highlight a number of remaining issues and concerns, and present some ideas of how to remedy them

A breakdown voltage model for implanted resurf p-LDMOS device on n+ buried layer

This paper presents an analytical expression of the breakdown voltage of a high voltage implanted RESURF p-LDMOS device which uses the n+ buried layer as an effective device substrate. In this model, the doping profile of the buried layer is considered and discussed. The implant dose for the drift region to implement the RESURF principle is also described by this model. Results calculated from this model are verified by experimental values

Measurement and evaluation of the applicability of reflective displays for direct view applications

A measurement set-up is presented to analyse the applicability of reflective displays for direct view applications. Essential for this set-up is to simulate the different types of illumination caused by environmental light. As an example the applicability of a reflective PNLC display is evaluated

The Role of Private International Law in Corporate Social Responsibility

__Abstract__ This contribution firstly reviews developments in the EU and in the United States on corporate social responsibility and conflict of laws. It concludes with reference to some related themes, in particular on the piercing of the corporate veil and with some remarks on compliance strategy, and compliance reality, for corporations

Tree regeneration responds more to shade casting by the overstorey and competition in the understorey than to abundance per se

Manipulating the overstorey is the key tool for forest managers to steer natural regeneration. Opening up the canopy does not only create favourable light conditions for tree seedling growth, but also for (competitive) understorey species. Therefore, a thorough understanding of how changes in the abundance of the overstorey and understorey influence tree regeneration is needed to attain successful regeneration. To this end, we used the regional Flemish Forest Inventories, which contain vegetation plots that were surveyed at two times and include large variation in species composition and abundance of both overstorey and understorey layers. These plots were classified into poor and rich forest types, which differ in overstorey and understorey species composition and soil fertility. For each forest type, we first investigated the effect of overstorey abundance and shade-casting ability on the understorey herbaceous vegetation cover and its competitive nature. Then, we modelled how both these strata influence the presence-absence as well as the cover of tree regeneration, using the zero-inflated beta distribution. Our results show that the understorey cover and its competitiveness mainly increase when the abundance and shade-casting ability of the overstorey is reduced. The shade-casting ability of the overstorey and competitiveness of the understorey were more important in determining tree regeneration, especially probability of presence, than the abundance of these layers per se. This was consistent for both forest types, although directions and magnitudes of the effects differed. In predictions mimicking several thinning scenarios we found that in the poor forests, reducing overstorey abundance could lead to an increase in seedling cover, whereas in rich forests, the opposite is true and seedling cover will potentially be reduced. Finally, in a single-species analysis focusing on Quercus, we found a trade-off between sufficiently reducing overstorey abundance, while at the same retaining parent trees as potential seed sources. These findings can be used to guide forest management decisions in order to attain successful forest regeneration in temperate forests

Crime, Control and Complexity On the ‘Crime and Security Complex’ in Modern Western Society

The dominant scientific methodology utilised by social scientists to study problems of crime and disorder is a macroscopic perspective that focuses on order and control; the molar. It assumes the ‘outside’ position of the researcher who focuses on functionality. Researchers construct their object of research as a distinct phenomenon and try to find links between it and its environment: the research object is assumed to be goal-driven. However, social reality is much more complex than this dominant perspective is able to research. This thesis argues that the molar cannot be fully understood without the molecular, a concept that expresses the idea of the unpredictable: sentiments, such as misunderstandings, fears and aspirations are key. However, the molar and the molecular are inextricably connected and emerge at the same time. Consequently, small changes on the molecular level could have huge and unpredictable effects on the molar level. Then, it becomes key to study the emergence of systems of control, such as law and partnerships, in relation to these molecular liquidities. Such an approach might teach us how crime policies deviate from the goals intended and start to produce undesirable side-effects. The thesis explores an alternative epistemology for examining issues of criminological concern which centers the molecular. It presents three case studies to illustrate the way both levels are interconnected. The first is concerned with the messiness and unpredictability of everyday relations and interactions in a criminal network. The second explores two Dutch police partnerships. Molecular elements such as personal preferences, frustrations and tensions are found to have a significant impact on the outcome of these partnerships. The third examines a measure introduced to prevent anti-social behaviour in the Netherlands which made shopkeepers and security personnel co-responsible for detecting and punishing acts such as shoplifting and fraud. The case is embedded in civil, not criminal, law and it is the diffuse nature of quasicriminal law that leads shopkeepers to refer to internal rules to justify their own actions. The cases show that the molecular is crucial in understanding crime problems and possible solutions, and the thesis concludes that the molecular should form the basis of a new epistemology for criminology research