One of the challenges that must be overcome to realize the practical benefits of ad hoc networks is quality of service (QoS). However, the IEEE 802.11 standard, which undeniably is the most widespread wireless technology of choice for WLANs and ad hoc networks, does not address this issue. In order to support applications with QoS requirements the upcoming IEEE 802.11e standard enhances the origin

Many control systems have a global dynamical behavior that in addition to a desired stable equilibrium has one or more unstable equilibria or other exceptional trajectories. Typical examples of such systems are pendulums or so called phase locked loops. The objective of the paper is to compare two different methods for analysis of the global behavior in such systems. The first method is LaSalle's

Yta är, paradoxalt nog, ofta något grundläggande i receptet för framgång i dagens ekonomiska system. Utseende, klädsel, attityd och attribut är centrala element i det som Erving Goffman kallar impression management: förmågan att avge ”rätt” intryck med hjälp av välformulerade självpresentationer som, baserade på statussymboler och associationer, indikerar vem man är eller vill vara (se Goffman 195

Geometric reconstruction from image collections is a classical computer vision problem. The problem essentially consists of two steps; First, the identification of matches and assembling of point tracks, and second, multiple view geometry computations. In this paper we address the problem of constructing point tracks using graph theoretical algorithms. From standard descriptor matches between all

Popular Abstract in Swedish En kontinuerlig alkoholkonsumtion leder till en ökad tolerans för alkohol (dvs en allt större dos krävs för att uppnå samma effekt) och kan slutligen också leda till ett alkoholberoende. Alkoholism är ett betydande samhällsproblem och en personlig tragedi för de som drabbas och deras omgivning. Alkohol har till skillnad från andra beroendeframkallande droger som tex koAlcohol induces profound effects on the function of the nerve cells in the nervous system. Alterations in gene expression is an important way by which these effects could be induced and sustained. Activating Protein-1 (AP-1) is a dimeric transcription factor constituted of proteins from the fos and jun immediate-early gene families. AP-1 induces gene expression of genes having a functional AP-1 bi

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n this paper, we consider the problem of multi-pitch estimation and tracking of an unknown number of harmonic audio sources. The regularized least-squares is a solution for simultaneous sparse source selection and parameter estimation. Exploiting block sparsity, the method allows for reliable tracking of the found sources, without posing detailed a priori assumptions of the number of harmonics for