Sökresultat:
857 Uppsatser om Sampling techniques - Sida 15 av 58
Identifiering av fosfatfosfors käll- och flödesfördelning i ett litet jordbruksområde
Eutrophication of lakes and streams are nowadays a well known environmental problem and implies an enrichment of the nutrients phosphorus (P) and nitrogen (N). Phosphorus is considered to be the most important component for the growth of aquatic plants and leads in too large quantities to an intensification of growth. Phosphate (PO4) is the fraction of phosphorus that can easiest be taken up by plants and thus have the greatest impact on eutrophication. Increased plant growth in lakes and unfavorable conditions for aquatic animals are two examples of negative consequences. A significant portion of the increased nutrient supply to nearby water can be derived to phosphate leaching from agricultural areas, where private sewers and agriculture is two main sources.
ATP bioluminescence to establish a test procedure for hygiene testing of liners and tubes on farm level : an investigation of the effect of ageing on the hygienic status of rubber liners and tubes
When rubber equipment in a milking system ages, physical and chemical deterioration occurs and cracks, crevices, as well as deposits of organic and inorganic material is formed on the surface. Bacterial colonization can accumulate, especially on ageing rubber equipment and if the cleaning procedure is not functioning properly. Formation of biofilm in milking equipment could in turn cause bacterial contamination of bulk tank milk. ATP bioluminescence is a fast and easy way to determine the hygienic status of a surface based on its ATP content, and results are given in relative light units (RLU). The method measures both bacterial contamination as well as residues from other organic material.
Vektorkvantisering för kodning och brusreducering
This thesis explores the possibilities of avoiding the issues generally associated with compression of noisy imagery, through the usage of vector quantization. By utilizing the learning aspects of vector quantization, image processing operations such as noise reduction could be implemented in a straightforward way. Several techniques are presented and evaluated. A direct comparison shows that for noisy imagery, vector quantization, in spite of it's simplicity, has clear advantages over MPEG-4 encoding..
Det självförsörjande passivhuset
The housing sector uses 40 % of the energy in Sweden and half of the electricity usage. Theuse of energy is the main reason to the increasing rate of carbon dioxide in the atmosphere.This is the main motive but also a wish of higher safety, that is a higher rate of selfsufficientenergy production in Sweden, we want to decrease the need of using fossil fuel. Now whenthe energy price rise, the interest in energy issues increase and more people discuss thepossibility of reducing the usage of fossil fuel. A change to renewable energy such as sun,wind and water is the only solution where we can get a sustainable development.One way to contribute to a better use of energy is to build in the principle of passive house.The house is being built with a thick and tight insulation. If you use a heat-exchanger withhigh degree of efficiency and a final heating battery on the ventilation system, the heat fromlamps, devices and the ones living in the house should be enough to fulfil the criteria ofliving.
Bedömning för att forma och styra? : En kritisk analys av formativ bedömning.
Syftet med föreliggande studie är att undersöka vilket synsätt som råder bland lärare i de lägre årskurserna gällande begreppet bedömning. Studiens metodologiska - och teoretiska utgångspunkter grundar sig i Foucaultiansk teoribildning. Empirin har samlats in genom två stycken fokusgruppintervjuer och materialet har analyserats med utgångspunkt i begrepp som governmentality och disciplinär makt. Resultatet visar att lärarna använder sig av flera styrtekniker som inryms av en dold maktutövning, vars primära mål är att forma och styra subjektet..
Fysiskt aktiva äldres erfarenheter och upplevelser av fysisk aktivitet och hälsa : Intervju med 4 stycken äldre
Aim: The aim with the thesis was to examine elderly peoples? motives towards physical activity. Method: A qualitative approach has been adopted with a purposive sampling procedure. Four half structured interviews have been conducted using a thematic interview guide. Results: The fear of being overweight and not being able to take care of themselves were announced as important aspects, since it motivated them to perform physical activity.
Allmänsjuksköterskans kunskap och attityd gentemot patienter med HIV/AIDS
The aim of this study was to examine nurses knowledge and attitude towards HIV/AIDS patients over the world. A descriptive literature study has been made based on scientific articles from the databases PubMed and Cinahl. The authors have examined the sampling and the falling off of the articles. The result shows that the attitude towards HIV patients is different from one country to another. The attitude was affected by several of factors such as experience, fear, knowledge / education and the nurses attitude and willingness to care for these patients.
Vinster med björkinblandning i granbestånd i syfte att höja markens pH-värde
The soil acidification and the pH-value of the soil have been discussed for many years. Many observations of the tree species effects on the soil pH have been done.
We have discussed the effects on the soil surface pH-value with a birch (Betula spp. L.) admixture in Norway spruce stands (Picea abies L.).We have used data from the Swedish National Forest Inventory. We have also discussed how the wood production and the biodiversity can be increased in mixed stands, in according to the Swedish forestry act Skogsvårdslagen. Our sampling areas are located in Norrland, Sweden.
The results show a significant correlation between an increased birch admixture and an increased pH-value of the soil.
Analys av data från flyglaserscanning :
In forestry there are always needs of forest data to make good strategic decisions of different actions and economic winning. Usually this data gets from field-estimations made by forest workers with expensive costs and sometimes unsatisfied quality.
StoraEnso Skog is a great forest company in Sweden and they have part of the responsibility of the forest own by Bergvik Skog. Bergvik Skog is owner of 1, 9 million hectares productive forest land. Both Bergvik and StoraEnso have great interest in new inventory techniques to get the important forest data.
The company Foran Remote Sensing offers the opportunity with airborne laserscanning of forest and forest land. Foran got the mission of Bergvik and StoraEnso to laser scan Bergviks possession in Älvdalen, Dalarna.
?Det verkar som man helst vill vara någon som är blond, smal och glad? : En komparativ studie av två olika chefredaktörers versioner av Veckorevyn
The purpose of this study is to compare the contents, editorials and front covers of Sweden?s oldest girl?s magazine Veckorevyn during two different years, in which the magazine had two very different chief editors.In the year 2000, Emma Hamberg got the job as editor-in-chief for Veckorevyn, with a vision of changing the way the magazine represented young females. She wanted to add a more feminist viewpoint to the magazine, since she felt that Veckorevyn didn?t live up to its claim of being ?a girl?s best friend?. Six years later, the famous Swedish fashion editor Ebba von Sydow became editor-in-chief for Veckorevyn, with the intention of making the magazine better, smarter and more fun for young girls.
Tillit i moldavien
Moldova is one of Europe?s poorest countries with a struggling business environment and an unpredictable political situation. The purpose of this thesis is to understand the implications of corruptions and why networks have come to play a key role in the Moldovan culture and if the formations of network are due to heritage or an effect of functionalism. The focus of the study is also to explain how the networks develop and the formation and maintenance of loyalty and trust among the members of the network. The study is of a qualitative nature that uses a key informant sampling method to get access to members of different business networks.
Alla är vi lika men ändå olika. Ett mönsterprojekt inspirerat av kroppen
Sweden has a great tradition of pattern in both wallpapers and fabric, where colours and shape matters a lot for the customer. I have through my examination project tried to expand the views and find new alternatives and shapes for the obvious pattern traditions. I have therefore worked with what could be on the verge of attractive or repelling. To create a curiosity of what is considered to be commercial. From the prospective of the body organs I have created physical patterns for fabric and wallpapers.
Nu ska jag berätta en saga : En studie om hur berättarteknik kan främja läsvärde och läsbarhet i ett informationsmaterial
In this study I have examined how narrative techniques can be used to promote the reading value and readability in information. My focus has been on the communication-agency Mandoly?s information-brochure which function is to inform other companies about their own potential for development in collaboration with Mandoly. The purpose with this study is to examine how it is possible to increase the reading value in order to engage the target group. In my study I have used four methods: analysis of Mandoly?s old information-brochure, literature studies, a qualitative interview, and an user test.
Kommunikation från organisation till målgrupp : En undersökning om en NGOs kommunikationsarbete i Tanzania
In this study I have examined how narrative techniques can be used to promote the reading value and readability in information. My focus has been on the communication-agency Mandoly?s information-brochure which function is to inform other companies about their own potential for development in collaboration with Mandoly. The purpose with this study is to examine how it is possible to increase the reading value in order to engage the target group. In my study I have used four methods: analysis of Mandoly?s old information-brochure, literature studies, a qualitative interview, and an user test.
ELVEEL - grafisk identitet till klädmärke
In my project I have collaborated with Linda Larson, who is the creator behind the fashion brand Elveel. The goal was to produce an identity and a graphic profile for Elveel. The aim was that the graphic profile would act as an extension of the clothes aesthetics. I wanted to explore if I by different folding and cutting techniques, in tags and packaging, could reflect the details of the clothes expression. But also how different design elements can reflect the story behind the clothes.