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Popular Abstract in Swedish Efter terroristattackerna den 11 september 2001 har FN:s säkerhetsråd - med USA i spetsen - radikalt utvidgat sina egna befogenheter när det gäller att upprätthålla internationell fred och säkerhet genom att anta resolutioner som i praktiken är lagstiftande. Resolution 1373 (som behandlar terrorism) och resolution 1540 (som behandlar spridning av massförstörelsevapen tiSince the end of the Cold War, international politics and international law have not only become increasingly intertwined, but their mutual implications have also become increasingly recognized by scholars. Yet research explicitly addressing the question of how political factors affect the emergence of legal rules is still limited. This doctoral dissertation aims to take a step in the direction of

Extremely large filled-aperture ground-based optical-IR telescopes, or ELTs, ranging from 20 to 100m in diameter, are now being proposed. The all-important choice of the aperture must clearly be driven by the potential science offered. We here highlight science goals from the Leiden Workshop in May 2001 suggesting that for certain critical observations the largest possible aperture - assumed to be

In large software organizations with a product line development approach, system test planning and scope selection is a complex tasks for which tool support is needed. Due to repeated testing: across different testing levels, over time (test for regression) as well as of different variants, the risk of double testing is large as well as the risk of overlooking important tests, hidden by the huge a

Uncertainty rules supply chains. Unexpected changes constantly occur on all levels; strategically through globalization, introduction of novel technology, mergers and acquisitions, volatile markets, and on an operational level through demand fluctuations, and events such as late arrival of in-bound material, machine equipment breakdown, and quality problems. The problem with uncertainty is increas

This paper presents a data-aided Carrier Frequency Offset (CFO) estimation algorithm targeting the Wideband OFDM systems. Utilizing 3 consecutive preambles and processing them at frequency domain, the algorithm is robust to both Frequency Independent (F-I) and Frequency Dependent (F-D) I/Q Mismatch (I/Q-M). To evaluate the effectiveness of the proposed CFO estimation technique, we conduct extensiv

Renewable energy systems are likely to become wide spread in the future due to environmental demands. As a consequence of the dispersed nature of renewable energy systems, this implies that there will be a distributed generation of electric power. Since most of the distributed electrical energy sources do not provide their electric power at line frequency and voltage, a DC bus is a useful common c

The paper is in part an evaluation of using virtual focus groups in existing commercial platforms as a research method, in part a pilot study on motives and perceptions of Facebook users concerning political participation in social media. Two focus groups were set up in the commercial social network Facebook, consisting each of six participants, all of them residing in Sweden. One of the groups co

The use of a hydrogen-sensitive palladium-metal oxide semiconductor (Pd-MOS) sensor in combination with a membrane for liquid-to-gas transfer for the detection of dissolved hydrogen was investigated. The system was evaluated with known concentrations of dissolved hydrogen in water. The lowest concentration detected with this set-up was 160 nM. The method was applied to monitoring of a laboratory-s

This paper describes the design, simulation and measurement of a GaN power amplifier suitable for envelope and phase signal combination. The low-frequency envelope signal is used to vary the gate (bias) voltage of the device, resulting in a pulse width modulated drain voltage, while modulation of supply voltage or current is avoided. The test circuit is implemented using a discrete GaN HEMT power

Two alternative Human-Machine-Interface solutions for in-vehicle speed support were evaluated in field trials in Hungary and Spain. Twenty vehicles on both test sites were equipped with two kinds of systems: 1) support via an Active Accelerator Pedal and 2) warning via beep signals and flashing red light when exceeding the speed limit. The test drivers drove one month with each system. Both system