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The increasing number of mobile devices and high-speed services accelerate the growth of traffic in cellular backhaul networks. The traditional technologies used in the backhaul, copper, radio links and optical fibers, either cannot offer high data-rate, or are expensive. In this paper, we propose mixed integer programming models to facilitate upgrading the cellular backhaul using the free space o
Abstract not available. Sammanfattning av föreläsningen på Internet: http://www.lu.se/info/humanistdag/LittVet.htm
The rise of the far right in Europe is central to an understanding of the new political variables emerging in the face of the European economic crisis. This paper focuses on the media representations of Greece and its role in the economic crisis by extra-parliamentarian groups of the far right in Denmark and Sweden. It demonstrates how the parliamentary extreme right in these countries “blame” Gre
In a small perception study, our ability to estimate speaker age from speech samples was investigated with respect to stimulus duration, stimulus type and speaker gender. Four separate listening tests were carried out with four different sets of stimuli: 10 and 3 seconds of spontaneous speech, one isolated word, and 6 concatenated isolated words, all produced by the same 24 speakers. The results s
The aim of this study is to generate a quality-controlled sub-kilometer dataset of the fraction of absorbed photosynthetically active radiation (FAPAR) across Scandinavia from satellite. FAPAR is required for estimating the amount of PAR absorbed (APAR) by vegetation, which in turn allows for estimation of carbon uptake. In this study, FA-PAR was modeled from normalized difference vegetation index
A previous investigation has shown that at normal angle of incidence, the integral of the reflectance over wavelength is bounded for a flat metal backed absorber. The bound is applicable to any absorber made of linear, time-invariant, causal and passive materials. We generalize the physical bound to arbitrary angle of incidence and polarization. Different design examples and numerical calculations
In Networked Control Systems, time-varying delays and loss of data are two important problems to be taken into account. In this paper, in order to face them, the design of a predictor-observer for possible unstable systems is proposed. A delay-dependent time varying stability condition is expressed in terms of LMIs. Stability and robustness is proved.
Based on an ethnographic study among selected ethnic minority groups in Kon Tum province of the Central Highlands of Vietnam, this paper discusses how popular discourses about social-cultural differences between the ‘civilized’ lowland majority Kinh people and ‘backward’ upland minority groups impact on political participation of the local people. Popular assumptions contend that ethnic minorities
