Sökning: "PEAK"
Visar resultat 1 - 5 av 1556 avhandlingar innehållade ordet PEAK.
1. Peak Car in Sweden?
Sammanfattning : It has long been well-known that economic variables such as GDP and fuel price as well as socio-demographic characteristics and spatial distribution are key factors in explaining car use trends. However, due to the recently observed plateau of total car travel in many high income countries, it has been argued that other factors, such as changes in preferences, attitudes and life-styles, have become more important drivers of car use. LÄS MER
2. Tracing and apportioning sources of dioxins using multivariate pattern recognition techniques
Sammanfattning : High levels of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in edible fish in the Baltic Sea have raised health concerns in the Baltic region and the rest of Europe. Thus, there are urgent needs to characterize sources in order to formulate effective mitigation strategies. LÄS MER
3. The Story of Phosphorus : Sustainability implications of global phosphorus scarcity for food security
Sammanfattning : The story of phosphorus began with the search for the philosopher’s stone, and centuries later the critical role of phosphorus in soil fertility and crop growth was highlighted. Eventually, phosphorus was implicated in the global environmental challenge of eutrophication. LÄS MER
4. Vitamins, fatty acids, physical activity and peak bone mass
Sammanfattning : Osteoporosis is a disease characterized by low bone mineral density, deteriorated bone microstructure and increased fracture risk. About 50% of all women and 25% of all men will have an osteoporotic fracture. Given that there is no effective cure in established osteoporosis, prevention is of high importance. LÄS MER
5. Peak and Power Reduction in Multicarrier Communication Systems
Sammanfattning : Broadband multicarrier communication suffers from a large signal span, causing problems in both wireless and wireline systems. This is commonly referred to as a high peak to average ratio (PAR), and leads to a high power consumption, which is an important limitation in many communication systems. LÄS MER