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7786 Uppsatser om Density functional theory - Sida 2 av 520

Ett nytt sätt att resa mobilt med cykel

With my bachelorwork I aimed to design a new mobile ?livingspace? which should become as small, functional andeasy to assemble as possible.The ?living space?is made for people who are interested inhaving a biking vacation and getting more close to naturebut at the same time wish to have a comfortable and easyway of traveling and living. The ?living space? is a multipurposevehicle which you transport with a bicycle. Thevehicle contains a kitchen with workspace, a refridgerator,space for luggage and a comfortable sleeping space.In my workingprocess I made research, sketches and modelsto find a functional solution..

En trädgård, en boksamling och det väl valda ordet : genrepedagogik för skriftspråksutveckling hos framgångsrika respektive mindre framgångsrika skriftspråkare i gymnasiet

This is a qualitative analysis that, based on systemic functional linguistics, or SFL, and genre theory, has aimed to study the genre pedagogical implications on written language as they occur in narrative stories and expositions whilst the model is introduced. Systemic functional linguistics is a linguistic theory that views the organisation of language as functional options for meaning; language is a set of resources to channel meaning through realisation. Genre theory elucidates the pragmatic and educational uses of SFL in the categorizing of language in configurations of meanings as they are set and understood in different cultures.  The purpose of the survey is to do so with focus on successful and less successful writers by attempting to answer two primal issues:How is development of written language in reference to the introduction of the genre pedagogical model visible in the studied texts?How does genre pedagogical teaching influence successful and less successful writers as visible in their writing with a certain purpose?To answer these issues the survey is based on narratives and expositions written by high school students who have been divided into two groups according to the purpose of the survey. One text in each genre has been written by the students before and after lessons based on the genre pedagogical learning wheel explaining the relevant genres.

Den erfarne ripjägaren : Optimalt födosök hos homo sapiens?

The purpose of this study is to examine some factors that make a human grouse hunter to prolong and increase its hunting effort. The theory of optimal foraging is used for explaining their behavior.The data of this study is collected from a web-based inquiry from 2007 answered by grouse hunters in Sweden. The method that has been used is mainly bivariate statistics and logistic regression analysis.Key findings shows that an experienced grouse hunter has more than 5 times the chance of prolonging hunting effort when grouse density is high, compared to a beginner grouse hunter. On the same time experienced grouse hunters also stop hunting in advance when grouse density is low to a larger extent than inexperienced hunters. Other factors of importance for prolonging the hunting effort for a day are age and the travel distance to the hunting area.

Identifiering av gallringsbehov med hjälp av flygburen laserskanning :

Thinning is one of the most important silvicultural activities in middle aged forests, partly to minimize damages and partly because it leads to earlier harvesting revenues and increases the value of the remaining trees. There are many different indices used to describe stand density and thereby the need of thinning in forests today. Studies have shown that forest variables can be estimated with high accuracy using airborne laser scanning and it is likely that the method could also be used to estimate forest density indices. In this study, the possibility of using the forest density index ?H² to determine and map priorities for thinning operations for a forest area was examined.

Förbättrad muskelfunktion och balans hos äldre kvinnor efter sex veckors funktionell träning

Sweden is the country that has got the largest amount of elderly in the adult population in the world. The physical activity level decreases as we grow old and we experience muscle mass loss and a bone density reduction. This leads to an increased risk for falls and subsequent fractures. The purpose of this study was to investigate whether an exercise program could affect muscle function and balance ability to prevent falls. 17 women (age 64-79) participated in this study and was assigned to a control group (n=7) and an intervention group (n=10).

Datorbaserad analys av enzymdesign för Diels-Alder  reaktioner

This thesis has been focused around the Diels Alder reaction with the goal to design an enzyme catalyzed reaction pathway. To achieve this goal computer aided enzyme design was utilized. Common traditional methods of computational chemistry (B3LYP, MP2) do not do well when calculating reaction barriers or even reaction energies for the Diels Alder reaction. New calcu- lation methods were developed and tested. This was the focus of the first part of the thesis, by choosing a small system, extensive and heavy calculations could be done with CBS-QB3.

Hur påverkar förtätningen stadens grönstruktur? :

Urban density is not new, but rather one side of the continous processes of change underway in the city. During the urbanizing boom of the industrialization, when the cities grew bigger, the first spaces to be built on were vacant and planted areas in the interior of the district. The gardens that once were there were replaced by yardhouses. The idea of urban density is that a dense city means less distance between residential areas and workplaces, resulting in fewer shipments and travelers, which ultimately leads to lower energy consumption and lower emissions. Urban density may lead to shorter distances, but not necessarily. In the wake of urban density the greenstructures of the city is shattered. The possibilities for green areas to contribute to the health of the city and its inhabitants is dramatically reduced.

Tree species traits response to different canopy cover for 34 tree species in an enrichment planted tropical secondary rain forest in Sabah, Malaysia

Tropical rain forests only cover around six percent of the world?s land area and contain around 70 % of the world´s animals and plants. Tropical rainforests have been, and still are, negatively affected by human activities. These activities lead to forest degradation which has negative impacts on production and biodiversity. Between 1970-1980 forests in Borneo, Sabah, Malaysia, was subjected to intense logging.

Röjning på snö och röjning på barmark : effekter på produktivitet och kvarvarande bestånd

Approximately 4000-5000 hectares, of SCA´s forest land area in Västerbotten, are in need of pre-commercial thinning (PCT) every year. Within the management district, the areas annually treated with PCT must increase, in order to decrease the area with an urgent need for PCT. This can be done by employing more forest workers or entrepreneurs, by mechanized PCT or by an extended season for PCT. Positive experiences from a private forest owner, who started to carry out PCT when the first snow came and then continued for several months, gave an idea to investigate the possibilities to prolong the season of PCT. The purpose of this experiment was to compare PCT carried out when there was snow on the ground with PCT performed when there was no snow on the ground.

Funktionell och aerob träning för U16 ishockeyspelare

The aim of this study was to examine if it was possible to improve fitness and strength in young ice hockey players with help of a training programme based on functional training and aerobic training. The training programme was performed on Halmstad Hockey U-16 team where 17 boys participated in the study. We performed the training in a period of sex weeks with three training occasions each week. These consisted of two functional training sessions and one fitness session. In the beginning we emphasized the importance of a correct performance and technique.

Mobbning i skolan : En studie om omfattningen av mobbning riktad mot funktionshindrade och orsaken till detta

Bullying in schools is a big social problem in today?s society and it affects the children exposed in a very negative way. The aim of my paper is to find out if there is a group of students who gets bullied by other students more often than others. I want to study if children with functional disabilities get more bullied than children without functional disabilities and,if this is the case ? why is it so?My questions are:Are children with functional disabilities particularly exposed to bullying?How is bullying prevented?In order to get my results I have made three qualitative interviews and analyzed two debate articles concerning bullying of the disabled.

Testverktyg för ett automatiserat system

Most often when developing a new system there is a need get a functioning testtool up and running. Including time, cost and resources the solution isn?t always obvious, developing your own or buy one ?of the shelf?. The purpose of this thesis is to study how a general testtool for executing functional tests should be designed to be reusable, be based on recognized knowledge and be able to fast and simple be customized for different types of systems. Key functions from the litterature is presented and used in the design of a testtool prototype.

Planteringsförbandets inverkan på bildningen av kärnved hos tall (Pinus sylvestris L.) : en modellsimulering av planteringsförbandets inverkan?

The current state of knowledge indicates that there is more than one factor that initiates heartwood transition. This study supports its hypothesis on the theory that heartwood is formed by a fixed fraction of the annual growthring, 0,5 to 0,8 rings. To calculate heartwood volume modelings were carried out in four different pine stands with different spacings, 0,75, 1,25, 1,5 and three meters. The model indicates heartwood diameter (HWD) and is based on four explanatory variables, height (H), crown ratio (CR%), diameter breast height (DBH) and tree height (TH). The shifting plant spacing results in varying growth rate in the juvenile stage.

Bastu-frigidarium,energieffektivt system för återhämtning

Sweden is considered to have one of the world's highest animal welfare standards in agriculture. Despite this, there are shortcomings in animal husbandry. One example is overcrowding, which is a way to increase stock size without making costly investments in the buildings. It can be carried out systematically to increase profitability or due to, for example uneven calving during the year. The European Commission criticizes the fact that stocking density is not controlled under Swedish welfare inspections.

UTVÄRDERING AV ARBETSMETODER OCH KONTROLL AV BELÄGGNINGSGRAD BLAND MJÖLKKOR I LÖSDRIFT I HALLAND

Sweden is considered to have one of the world's highest animal welfare standards in agriculture. Despite this, there are shortcomings in animal husbandry. One example is overcrowding, which is a way to increase stock size without making costly investments in the buildings. It can be carried out systematically to increase profitability or due to, for example uneven calving during the year. The European Commission criticizes the fact that stocking density is not controlled under Swedish welfare inspections.

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