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To obtain high performance control of a dc-dc converter, a good model of the converter is needed. It is suitable to consider the load to be included in the converter model since it usually affects the dynamics. The load is often the most variable part of this system. If the load current and the output voltage are measured there are good possibilities to obtain a good model of the load on-line. Ada
Measurements and extraction of Q-value and self-resonance frequency of on-chip differential symmetrical inductors have been performed. Both 1-port and 2-port measurements have been carried out. In the 1-port measurements a high frequency broadband 180
Intumescent coating is an important fire protection method for steel structures. Traditionally its fire properties have been evaluated by performing furnace tests using a standardized test procedure and following a standardized time-temperature curve. This procedure is restrictive in performance based fire safety engineering design since it limits the fire condition to the standard one only. In th
This monograph builds a new approach to the interaction of gender systems with socioeconomic and environmental changes, and applies this approach in the analysis of regional trends in Latin America over the past 25 years, together with national and territorial analyses. The book’s main objectives are to advance a theoretical and methodological approach not found in other studies of socioeconomic a
Popular Abstract in Swedish Förutsättningar för gymnasieelevers kunskapsbildning och för undervisning inom miljöområdet. Miljöområdet är flervetenskapligt och komplexiteten i frågeställningarna är uppenbara. Utgångspunkten i avhandlingen är att anlägga ett pedagogiskt perspektiv på detta kunskapsområde. I boken ingår en undersökning av gymnasieelevers miljötänkande, och på vilket sätt skolans unConditions to promote students' knowledge and education about environment The objectives of this Study are: · To describe and analyse the development of students' knowledge about the environment · To elucidate the nature of student thinking about the environment and, from the findings, to suggest the potential of Environmental Education Environmental education is multi-disciplinary and complex.
Popular Abstract in Swedish RB-GENEN SKYDDAR OSS MOT CANCER OCH STYR UTMOGNADEN AV BLODCELLER. Frisk och sjuk blodbildning: Varje dag bildas det ungefär ett tusen miljarder blodkroppar av olika sorter i vår benmärg. Varje dag, livet ut. Denna imponerande massproduktion av celler är livsnödvändig. Dom vita blodkropparna ser tex till att vi inte dukar under i infektioner, dom röda transporterar deThe aim of this study was to investigate the role of some tumor suppressor gene products (with emphasis on the retinoblastoma suppressor gene product) in the regulation of differentiation and proliferation in leukemic and normal hematopoietic cells. For this purpose, the expression of the tumor suppressor genes RB, p53 and p16 were artificially altered. Cells used were human leukemic cell lines an
This paper describes a design of two miniature claw-pole motors, one single phase and one two-phase motor. Both motors are designed to be built in iron powder technology. The designs are optimized and the static characteristics determined by 3D FE modeling. Both motors are being built by separate companies, but no measurements are presented in this paper. The main goal is to evaluate the industria
Dimethyl Ether (DME) has proved to be a promising fuel for diesel engines. It virtually eliminates particulate emissions and reduces the formation of nitrogenous oxides, without negatively affecting engine efficiency. Obtaining a deeper understanding of the mechanisms behind these properties is thus highly desirable. Various authors have suggested that the low NO emissions associated with DME are
