Sökresultat:
1784 Uppsatser om Substrate choice. - Sida 27 av 119
Fysiska strukturer i Umeälvens gamla älvfåra och dess inverkan på laxsmoltens utvandringsframgång
The survival of hatchery reared smolts is generally low after release. To get a better understanding of what variables affecting migration success, Atlantic salmon smolts were studied during their out-migration in the old river channel in the lower part of river Umeälven. The area consists of shifting habitat and complex structures which causes difficulties for smolt on their migration out to sea. The aim of this study was to try to determine the effects of feed restriction, fin conditions and different physical barriers in the river, on the migratory behavior of Atlantic salmon smolts in the river Umeälven.
The river was divided into six different sections using acoustic receivers strategically deployed along the river. Two-year old hatchery-reared smolts (n=150), in three different weight classes, were tagged with acoustic transmitters.
Spawning site selection of brown trout in habitat restored streams
During the timber floating era, most of Sweden?s watercourses were altered. This decreased the amount of available spawning habitats for salmonids, and hence had a negative effect on the riverine brown trout (Salmo trutta) populations. Reconstruction of spawning grounds is today a common measure in restoration of altered streams in Sweden. However, very little evaluation of the effectiveness of these reconstructed spawning grounds exists.
Förhöjd kompetens eller välling i hjärnan?
The purpose of this study was to examine if women's career was affected by becoming a mother after 35 years old. It was also our intention to discover if it was an intentional or an unintentional choice to postpone giving birth just for the sake of the career. We have read articles that are implying that women´s career possibilities, combined with children, is difficult and of current interest in today's society. Science has shown that it no longer appears to be women's main life objective to give birth but they now also wants a career. We wanted to shed some light on the subject from two different angles, so we looked both from the women's perspective and from the employer's perspective.
Farmers preferred end-values related to their use of forward contract : a means-end chain analysis
Today?s farmers are constantly affected by the fluctuating world market prices on grain and thereby the price risk that comes with the price fluctuations. The volatile prices of grain increase the price risk within the business, which in turn affects the profitability of the business. The fluctuating prices together with the increased price risk within the farm business have opened up the market for hedging instruments.
In this master thesis project, the aim is to identify the underlying end-values of 30 Swedish farmers? related to their choice of using hedging and the product; forward contract.
På vilka grunder sker beslutsfattandet i viltförvaltningsdelegationerna?: En hypotesprövande studie utifrån rational choice
Den politiska målsättningen är att den svenska rovdjursförvaltningen skall grunda sig på acceptans och förståelse för olika särintressen. Därför infördes 2010 viltförvaltningsdelegationer i varje län för att skapa regional och lokal förankring. Delegationen består av olika särintressen som ska besluta i frågor som rör riktlinjer för rovdjur och annat vilt. Den här uppsatsen har undersökt Norrbottens-, Västerbottens-, Jämtlands- och Dalarnas läns delegationsprotokoll vad gäller beslutsfattande angående björn och lodjur under tidsperioden 2011-2012. Det är jakt- och viltvårdsintresset, rennäringen och naturvårdsintressets beslutsfattande som har valts ut för granskning på grund av deras olika preferenser.
Det känns konstigt att vara på samma ställe : Ungdomars upplevelse av kommunikationsprocessen i samband med växelvis boende
Summary:Teenage girls? choice of dropping out or complete a treatment.The purpose of this study is to investigate, from a client?s perspective, why teenage girls (age 13 to 17) drop-out or complete a treatment at Familjehuset in Karlstad, Sweden. We also want to investigate if the teenage girls? experiences coordinate with the social workers opinion of why the teenage girls choose to drop-out or complete the treatment. Earlier research shows that many factors influence the client?s choice.
Band eller hjul? : Lämpligt fordon för EOD-specifika behov i Afghanistan.
The background to this paper is the events that have taken place in the Swedish area of responsibility in Afghanistan where Swedish troops have been ambushed by the insurgents. Although the troops primarily where riding in Toyota Land Cruisers they had no casualties. I think that the Swedish force needs other vehicles that can be armed and are armoured.When I compared three different types of armoured vehicles, I found that PTGB 6 is the vehicle of choice, according to the special needs that a Swedish EOD-squad, their task and their equipment have. .
Trä som fasadmaterial ? behandling och beständighet
Since prehistoric time man has used wood to build their environment. The material?s availabilitycombined with its good mechanical properties has often made it the material of choice. Like allmaterials exposed to natures degradative processes the properties of wood decreases over time.Rot, UV radiation and attacks by insects and pests damage wood if not protected. Since we wantwhat we build to consist, optimizing our building materials durability is of great interest.Techniques and methods for increasing the endurance of wood have been developed in severaldifferent places and for a long time.
Utilization of different habitatsin Colobus angolensis palliatus in the forests of Diani Beach, Kenya
The Angolan black and white colobus monkey (Colobus angolensis palliatus) is an arboreal primate that inhabits coastal forest fragments on the south cost of Kenya and is consequently vulnerable to forest fragmentations. The study was carried out in March and April 2011 in Diani Beach in Kenya where two of the largest populations of the species are distributed. This study is a pilot study to test methods for a Master?s thesis. The aim was to investigate any variations in use of two habitats of C.a.
Elstart Motorsåg
As requested by the company Husqvarna AB, we have developed a prototype of an electrical start device to a chainsaw. This was done through the development of new details in Catia, which has been integrated with existing details. Electrical components have been purchased by HAB electronics. In parallel with the modeling calculations was done, which was the basis for determine dimensions and the choice of an electric motor and gears. Prototype 1 improved gradually and led to prototype number 2, which became the final result.
FAKTORER BAKOM M?GELTILLV?XT P? N??S SLOTT
With climate change, the temperature and relative humidity in Sweden are increasing. The majority of historical environments lack protection against this increase, which also increases the risk of mold infestation in these environments. One of these environments is N??s Slott, in which several rooms have recurring mold growth on objects and furniture. By examining one of the rooms in the castle that is in the risk zone or has mold growth, factors behind the mold growth can be investigated in order to create a basis for future actions against mold.
Likvärdighet, i vilket syfte för vem och när? : En idéanalys av likvärdigheten i utbildningssystemet från grundskola till gymnasiet utifrån frihetsbegreppet
In which purpose, for who and when does equality get fullfilled in the education system? This studie takes aim on the upper level and second upper level school system to study what the curriculum says on the one hand and what the system brings out on the other. With critical theory as method, with Herbert Tingsten as founder, this studie analyzes the logic of the education system to set out if the pupils choice of education, after the upper level lower secondary school, in second upper level is legit with democratic principles such as freedom (of choice). The theory, used to analyze the individuals progress to be autonomous, uses Adam Swifts definition of freedom as an individual being autonomous. The findings of the study shows that what politicians chases as equality really i´snt equality.
Fysisk aktivitet i ett livslångt perspektiv : En studie om lärares, i ämnet idrott och hälsa,syn på fysisk aktivitet i ett livslångt perspektiv
AimThe aim of this study has been to examine how health enhancement teachers in Montana, USA, view the value of physical activity from a lifelong perspective.In what way does the health enhancement teacher think the importance of physical activity from a lifelong perspective could be presented?What resources are available for teachers to present the value of physical activity from a lifelong perspective?MethodThe issue has been answered through qualitative interviews consisting of six health enhancement teachers, four women and two men, in Montana, USA. One of the teachers worked at an elementary school (for 30 years), three teachers worked at middle schools (20, 10 and 8 years of work experience) and two of the teachers interviewed worked at a high school (30 and 3 years). ResultsThe majority of teachers feel that a wide variety of activities, adapted to an individual level, and the understanding of a healthy lifestyle are important in order for the teacher to present the value of physical activity from a lifelong perspective.The teachers felt they had sufficient material in order to present the value of physical activity, where the school budget provided the teachers with materials every year. In addition to the budget, all the teachers had 12 hours of professional development every year where they could attend conferences or their own choice of professional development.ConclusionWith the help in forms of professional development offered by the school, conferences, meeting with other teachers, and their own choice of development, the teachers instruction techniques could increase which could help the teachers to find the pupils? interest for different kinds of physical activities.KeywordsPhysical education and health, physical activity, SOC, sense of coherence..
Utvärdering av klusteranalytiska metoder i kombination med bibliografisk koppling: en bibliometrisk kartläggning av aktuella forskningsteman inom informationsvetenskap
The purpose of this thesis is to evaluate the combination of bibliographic coupling and three hierarchical cluster analytic techniques: average, complete and single linkage. Bibliographic coupling is applied as a measure of similarity between recently published articles and the cluster techniques are used for the partition of a set of articles into subsets of articles with similar research focus. The field of information science is applied as the test arena and the selection of data, i.e., the article population to be partitioned, is based on a number of central journals. Methods of evaluation include both quantitative approaches as well as a qualitative one. For comparing the resulting partitions, adjusted Rand index is utilized and for the establishment of cluster coherence and isolation, measures of average normalized coupling strength is applied.
Kvalitetsarbetet i Nacka : En fallstudie av kundvalsmodellen inom äldreomsorgen
This essay discusses the interaction between the authorities in Nacka municipality in Sweden and supervisors within the eldercare. In Nacka politicians have gradually started delegate responsibility for how care-giving for the elder should be done and focus instead on formulating economical objectives and overall rules. It is up to the approved supervisors of eldercare to deliver good care and quality. The method chosen to accomplish this is public choice. This method is a part of the big New Public Management (NPM) reform which have had a big impact on Swedish public sector since the 1980´s.