Sökresultat

Populärvetenskaplig sammanfattning: Under alla tider har planeten Jorden genomgått en naturlig klimat variation. Utöver denna naturliga variation i klimatet, så har människan, under det senaste århundradet, medverkat till en ökning av växthusgaser i atmosfären. Detta kan innebära att växthuseffekten intensifieras och Jorden bli utsatt för onaturliga temperaturökningar. Koldioxid (CO2), från bland In the context of climate change, it is important to understand how the terrestrial carbon cycle is interacting with the anthropogenic increase in atmospheric carbon dioxide (CO2) concentration. Boreal and subarctic regions in the northern hemisphere are great carbon pools, as well as they are subject to predicted warming. These facts place them in the absolute frontline of ecosystems that are to

Populärvetenskaplig sammanfattning: Jordens klimat är ett aktuellt forskningsämne. För att komma fram till resultat som är globalt applicerbara bedrivs forskning för att öka förståelsen och kunskapen om återkopplingsmekanismer mellan klimat och vegetation på många platser runt om i värden och i olika klimatzoner. Sedan början av 1900-talet har det pågått forskningsstudier (av ekosystemprocesser) iThis report investigates the utilization of digital camera images (DCIs), sensitive in the visible part of the spectrum, for documentation of seasonal and inter-annual variations in snow cover and plant phenology. The DCIs used were transformed to orthographic images (ortho-image) from ordinary oblique DCIs taken between January 2001 and December 2003 at a sub- arctic mire (Stordalen) in northern

People have become more and more mobile as a result of advancements in wireless communications technologies. The mobile phone as an enabler of this increased mobility has become an ever more important part of our society but comparatively little research has been done concerning mobile services at the organisational level as opposed to the individual level. With our study we wish to contribute to

One of the most important topics in financial literature is the Efficient Market Hypothesis (EMH). Recent financial research has questioned this hypothesis, and many authors have reached the conclusion that a contrarian strategy creates abnormal positive returns. In other words a strategy profiting buying losers and selling winners. To explain this market behaviour researchers have come up with a

As the title implies this study builds upon earlier research in the area to obtain an increased understanding of the determinants of smoking. Starting from the household production model (Becker 1965; Grossman 1972), the decisions of smoking participation and intensity of cigarette consumption are estimated in two sets of Two-part Models (2PM). Due to the characteristics of the data – the first th

This essay aims to examine whether there is a partisan influence on local government spending using three different measures, ideology, fragmentation and constellations of government. The ideology measure examines the share of socialists (left-wing parties) in the council. Fragmentation consists of a Herfindahl index which uses information on number of parties in the council and their respective s

The role of environmental permits as a driver for environmental improvements has been a topic of debate for a while. Many permitting regulations were designed in the 1970's and have not been updated since then. Consequently, they have acted mostly as a driver for the adoption of pollution control technologies. Some experts now see that appropriately designed and implemented environmental permi

The 21st century is accompanied by a myriad of urban challenges with respect to energy use, waste management, transportation & mobility, water consumption and ecological space. An increasingly growing influx of people from rural to urban areas coupled with the already significant urban growth is presenting businesses, municipalities and the public with a multitude of challenges in managing and

Protected areas serve the purposes of protecting nature and providing possibilities for outdoor recreation. In an area with natural assets, protected or not, different interests are interacting. The aim of this study was to investigate whether nature conservation could enhance environmental benefits as well as provide economic and social benefits to a region. Another aim was to investigate the de

Recently, industries have changed their efforts of collaboration to encompass transformations not just from an economic view but also for enhancement of environmental and social performance. This collaboration is Industrial Ecology (IE), or its regional application of Industrial Symbiosis (IS). IS can be defined as a long-term, symbiotic relationship between and among companies involving physical