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In this work we present a new low-power medium access scheme for sensor-type networks specifically with low traffic intensity. We call the proposed scheme DCW-MAC where ultra-low-power wake-up receivers are combined with optimal duty-cycled listening. First we introduce a framework for the analysis of energy consumption of the studied network type, then we use it to optimize the MAC scheme to achi

Abstract is not available

Spatial data and related technologies, particularly Geographical Information System (GIS) with the capability of display, retrieval, analysis and management of spatial data, have proven crucial for disaster management. However, there are currently different problems with availability, access and usage of spatial data for disaster management. The problems with spatial data become more serious durin

Purpose: The purpose is to provide insight into how companies in practice work during packaging development to reduce negative environmental impacts along supply chains and to compare their practical approaches with the theoretical concepts presented in the literature. Design/methodology/approach: The research approach is explorative and based on nine cases (26 semi-structured interviews) in the f

This thesis is based upon four original papers describing the characterisation of mantle cell lymphoma (MCL) tumours and cell lines in comparison with different populations of normal B cells. Gene expression profiling, which were used in the studies, has during recent years developed as an important tool in characterisation of different types of malignancies. In this thesis, the technique is used

The ATLAS experiment is one of the four experiments at the Large Hadron Collider (LHC), which is supposed to be operational in early 2007. Proton-proton collisions at an unprecedented center-of-mass energy of 14 TeV will probe new frontiers of the universe, hopefully providing a better understanding of the laws governing our universe. Although the ATLAS detector has been optimized to search for th

Summary form only given. Ballistic devices have received increasing attention for their nonlinear electrical properties, which are interesting from both physics and application points of view. Recently, novel nonlinear electrical properties of three-terminal ballistic junctions (TBJs) have been discovered theoretically and experimentally. In this work we propose and demonstrate functionality of a

Antologin Maktens (o)lika förklädnader tar upp det problematiska förhållandet mellan feminism, eurocentrism och klass från varierande infallsvinklar. Antologin kan läsas som en postkolonialt inspirerad lägesrapport om Sverige i början av det nya millenniet. Även om rasism är och har varit en marginaliserad fråga inom den svenska feministiska forskningen, visar flera texter i denna antologi att ras

The paper presents a study of the dynamics of non-stationary shock wave and its interaction with the boundary layer in a transonic flow inside a channel with a bump. The turbulent flow is handled using Large Eddy Simulations (LES). The computations are done with the recently developed multidimensional upwind scheme and with two other commercial codes. The aim is to improve the understanding of the

We are constantly reminded of the problem of evil. There are a number of models to cope with theodicy, but the problem with most of them is that, in different ways, they tend to legitimate evil and accuse the victims. In this article it is suggested that theodicy may serve as a hermeneutical key when reading often marginalised or misunderstood text belonging to the Jewish and Christian traditions.

A current aim in research on moral cognition is the development of computational models of moral choices and judgements. We fit diffusion models with and without dependence on visual fixations to data on binary moral choices. We find that a fixation dependent model provides a better fit and can capture many features of the empirical data. We discuss the implications for understanding moral cogniti