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An analytical stiffness and eigenfrequency model of symmetric parallel 6-6 Stewart platforms (hexapods) is developed based on geometrical design variables to optimize the dynamical performance. The model is based upon Lagrangean dynamics in which the Bryant angles are used for the kinematics formulation. With the analytical eigenfrequency model, optimum stiffness characteristics can be obtained fo
This paper describes the development of a method to determine the extinction cross section for a very large bandwidth in the microwave region. The method is based on measurements of the radar cross section in the forward direction to calculate the extinction cross section for the frequency range [2.5,38] GHz. The method is applicable to samples of arbitrary shape and composition and can also be us
In this paper, we study a flexible routing strategy for demand protection and a corresponding optimization problem for networks that permanently experience fluctuations of the capacity available on their links. This is an important and novel topic as limited link availability is a fundamental feature of wireless networks; yet majority of work in survivable network design is restricted to total fai
EuCARD2 is an Integrating Activity Project for coordinated Research and Development on Particle Accelerators, co-funded by the European Commission under the FP7 Capacities Programme. Within the network EnEfficient we address topics around energy efficiency of research accelerators. The ambitious scientific research goals of modern accelerator facilities lead to high requirements in beam power and
The adsorption of different metal-organic complexes at surfaces was investigated by spectroscopic techniques (x-ray photoemission spectroscopy, x-ray absorption spectroscopy, resonant photoemission spectroscopy) and by scanning tunnelling microscopy. The investigation methods are able to provide atomic scale information on the studied systems, which moreover originates from the top-most atomic lay
Organ trafficking is an illegal means of meeting the shortage of transplant organs on a global market. Reasons that this activity flourishes include medical needs, poverty and criminality. This article is focused on those who sell their organs. The ambition is to see how their actions are the result of a socio-cultural context as well as how ideas and actions impact the trafficking phenomenon. The
This paper presents current results of an ongoing project to develop a Modelica base library for thermohydraulic systems. There are many different aspects to the development of such a library, fromthe basic physics of fluids and heat to the structuring of model classes in the library and the actual implementation in the Modelica language. The structuring should define interfaces and partial classe
Rättsväsendets oförmåga att tillgodose barns rättigheter och rättssäkerhet som brottsoffer har under senare år uppmärksammats och lett till en rad åtgärder, däribland etableringen av s.k. Barnahus. Barnahusidén har genomgått en nordisk spridningsprocess från Barnahusíd på Island som startade 1998 till starten av en försöksverksamhet på sex orter i Sverige år 2006, till ytterligare ett 20-tal orter
