Filtyp
This paper considers the impact of phaseless (or magnitude only) output antenna patterns on the performance of multiple antenna systems which employ impedance matching networks. In particular, correlation and capacity are used as performance metrics when the output patterns are with or without phase information. Two methods of synthesizing complex antenna patterns are also discussed and their perf
Attofysik handlar om att öppna ögonen för en värld som vi länge vetat fanns men fram till nu inte har kunnat se – elektronernas värld. En värld av ofattbart små och snabba förlopp och fenomen. Utvecklingen av lasertekniken har kommit så långt att vi faktiskt har möjlighet att studera den världen.
This is the third annual report of the Swedish Butterfly Monitoring Scheme, a national monitoring programme coordinated by Lund University for the Swedish Environmental Protection Agency since 2010. The programme is a partnership between the Entomological Society of Sweden, the Swedish Environmental Protection Agency, Lund University, the Swedish University of Agricultural Sciences and the Swedish
The problem of load mitigation in wind turbines located in wind farms is addressed. The benefits of letting turbines communicate with and account for their neighbors are explored. First, the idea of exploiting previewed wind speed measurements is examined. The problem is formulated as an H 2 model matching optimization. The influence of preview length on the performance is analyzed and simulation
In the issue of using Life cycle assessment (LCA) for assessing E-commerce, we had some epistemological observations, via content analyse method, indicating that LCA has not only aspects of the ‘Systems Approach’ but also of the ‘Analytical Approach’, with even less emphasis on the former in practical terms. The purpose of this paper is to shed light on the connection among these observations, and
Under operations in hot regions and flights at low heights the temperature in the fighter cockpit may rise to high levels causing heat stress on pilot. Reducing cockpit glass light permeability or increasing cockpit ventilation reduce heat load. The measures should not affect pilots’ performance. This study investigated if clothing material with reflective properties has an effect on heat gain in
