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We present an architecture supporting ad-hoc composition of pervasive services, an open-source framework that implements it, and the key design principles behind it. The architecture focuses on direct human interaction, supporting combination of devices and services that are not explicitly designed to work together. The focus is on local networks, but extension is possible to wide area networks, i

Popular Abstract in Swedish Stroke är den tredje vanligaste dödsorsaken och den vanligaste orsaken till neurologiskt handikapp. Idag är möjligheten att motverka skadeutvecklingen vid stroke begränsad. Experimentella modeller för stroke innebär att vi kan studera mekanismer för nervcellsskada vid patologiskt sänkta blodflödesnivåer (ischemi). I våra studier har mellersta hjärnartären på ena sidan t

Atherosclerosis as a disease is postulated to stem from a response to injury of the arterial wall by various stimuli. The inflammatory response is proposed to mediate intimal formation after injury. One pathway of cellular response to injury is through transcription factor NF-kB. We show that balloon injury of rat arteries leads to increased NF-kB activity and ICAM-1 expression, associated with i

Coordinating a software project across distances is challenging. Even without geographical and time zone distances, other distances within a project can cause communication gaps. For example, organisational and cognitive distances between product owners and development-near roles such as developers and testers can lead to weak alignment of the software and the business requirements. Applying good

Popular Abstract in Swedish Alla kemikalier vi använder oss av och utsätter oss för påverkar både oss och den omvärld vi lever i. Under hela sin livscykel har de en påverkan på miljön, från de att man utvinner råmaterialen, när de tillverkas och när vi använder dem. Till och med efter att vi använt dem har kemikalierna en påverkan på miljön. Det gäller både schampot som följer med duschvattnet ut It is of at most importance that society reduces its impact on the environment. In the chemical industry the use of renewable resources will play a fundamental role in the transition to more sustainable chemical products. Also industrial biotechnology, i.e. the use of enzymes to convert raw material into valuable chemicals at low temperatures, leads to more sustainable processes. The research pres

Experiments have shown that the time is now ripe for a new generation of interactive learning tools for control. The tools are based on objects which admit direct graphical manipulation. During manipulations, objects are updated instantaneously, so that relations between objects are maintained all the time. The tools are natural complements to traditional education, and allow students to quickly g

With its long history of about three thousand years of statehood and with its geographic situation in the Caucasus, at the cross-roads of the Christian and Muslim worlds, Georgia represents an interesting picture in terms of linguistic (and not only linguistic) diversity. During the Soviet period and even since the Russian expansion in Georgia (19th century), minority and majority languages and id

This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype fo