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385 Uppsatser om Diurnal variations - Sida 5 av 26

Kravmärkt? : en studie om gymnasieelevers uppfattningar om krav och förväntningar i deras studiesituation

The purpose of this study is to investigate and describe the variation in perceptions of demands and expectations of study performance among a group of students at an upper secondary school. The study is inspired by a phenomenographic approach in which variations in perceptions of a phenomenon are of importance. Twelve students at a science program participated and were interviewed in groups of four. The results show that among the students there are several different perceptions of the demands and expectations to perform they felt present in their lives. The most important result is that it is the students' own demands and expectations on their performance and study results that are seen as the most demanding..

Timeliness cost for agricultural sprayers : weed control in cereal crops

Evaluation of machinery costs is necessary for selecting appropriate farm machinery. Timeliness cost due to untimely operations is an important component of machinery costs. Timeliness costs can be high for crop sprayers, since pesticide application must be carried out within a short time interval. This Master thesis investigated the timeliness cost and the probability of a suitable workday for spraying. Timeliness factors were estimated for four different crops (oats, spring wheat, winter wheat and barley) using historical weed trial data.

Nätnyttomodellen och dess inverkan på ett distributionsnät - En studie i samarbete med Härryda Energi AB

This report is intended to give an insight in the Network Performance Assessment Modeland the parameters that is needed in the making of a fictitious grid that represents anoptimal grid. A main goal is to investigate how the construction of a real grid iscompared to the fictitious.One of the key parameters is how redundancy is treated in the model and to find theoptimal amount of redundancy versus the costs. Further is the dimensioning of the grid ofinterest. The fictitious grid is based on energy whereas the real grid often is based onsubscribed power and these two principles are compared and analyzed.The difference in the outcome of the model result due to variations in input data of themodel is also discussed in the report..

Språkinlärning-medvetenhet och reflektion. : En komparativ textanalys av fyra lärarhandledningar i spanska för grundskolan.

This study is about language learning and language development. The purpose of the survey is to investigate how current learning theory and language research reflect on teaching instructions for the teaching material in spanish, with focus on the student´s awareness and reflection.The survey is based on a comparative textanalysis of four teaching instructions for the seventh year in the nineyear compulsory school.The result show great variations between the teaching instructions, regarding execercises as well as instructions. A theoretical approach and an explicit connection to research is something that is constantly missing in the instructions to the teachers..

EFFEKTIVISERING AV MATERIALHANTERINGSPROCESSEN TILL OCH FRÅN SERVICEAVDELNING I SJUKHUSMILJÖ

AbstractPurpose ? The purpose of this study is to examine the challenges that exist within thematerial handling process, to and from a department for service and maintenance at a hospital, and how the challenges can be managed to achieve a more efficient material handling process. In order to fulfill the purpose the following two questions where formulated:1. What challenges exist within the material handling process, to and from adepartment for service and maintenance at a hospital?2.

Hur påverkar en ökad andel solceller Umeå Energis elnät? : ? En utredning med fokus på spänningsvariationer och osymmetri inom landsbygds- och tätortsnät vid en- och trefasanslutning av solcellsanläggningar

A good power quality can be an important prerequisite to achieve a sustainable society. Scandinavia's electrical system is in many respects superior, and Sweden has a fossil free electricity generation at 97 % and a reliability of electricity distribution at 99.98 %. Meanwhile, the EU has an ambition to expand the electricity market in order to achieve a joint trading business across Europe. This cross-border market will result in a large proportion of fossil energy sources integrated into our electrical system, which also leads to an increased need for renewable electricity production in Sweden. One part of this development is to increase the share of renewable micro generation that is locally or regionally connected to the power grid.

Tillväxtmönster och åldersstrukturer hos opåverkade bestånd av strömlevande Arktisk harr i Sibirien :

It is hard to find streaming waters where humans haven?t affected the fish populations or the running water it self. In many streams the fish populations are over harvested and this results in a lack of older and larger fish. This is also the situation for many populations of Grayling (Thymallus spp.). To be able to develop management plans and to perform actions that improve the situation for the grayling, it is therefore crucial to know what natural, by humans unaffected populations look like.

Humorns gränslösa begränsningar och möjligheter : En studie av humorns praktiker utifrån exemplet samtida ståuppkomik

For this study I use a critical realism approach and the aim with the thesis is to elucidate humor as a socially reflexive tool. My investigation has its starting point in the stand-up comedy arena, which I mean can exemplify a social context where the communication is focused around humor. I mean that humor can be used to create imaginary variations of the knowledge and truths, which we live our lives according to. The asymmetrical interpretations of the socially reflexive tool humor can be used to identify, elucidate, and cope with the diverging truths of life. But even though humor has boundless possibilities to reshape knowledge, it is also limited by the social contexts where it is mediated and by the involved individuals that create the humor or sanction the humor positive and/or negative..

Kan man genom kartstudier förutse häckningsframgång för ängshök (Circus pygargus) i Uppland? :

Montagu´s harrier (Circus pygargus) is a diurnal, Eurasian raptor, which migrates from its northern breeding grounds to winter in sub-Saharan Africa. In Sweden, its core breeding area is centred on the island of Öland, with a stable breeding population of approximately 40 pairs. The province of Uppland is on the northern end the distribution range, where 4-8 pairs have regularly bred since the 1980s. In Sweden, the Montagu?s harrier is classified as an endangered (EN) species. This classification is partly due to a lack of preferred nesting habitat, such as shrub-lands or dense wetlands with Claudium spp.

Dragleksak för Playsam

The report is a project in cooperation with the Swedish toy company Playsam. The assignment was to design a new toy to their range of products, a pull along toy in shape of a snail with a mechanical function. The research phase contains studies and analysis of the company, its identity, product range and its customers. The research phase includes all the information needed to complete the project. A number of concepts were presented for evaluation by the company.

Är variation i STFI-tjocklek ett bra mått på kartongs bulighet? : Are variation in STFI-thickness a good measure of uneven surface, bumpiness, on cardboard?

This degree project aim to evaluate if variations of the STFI thickness can be used to assess bumpiness on cardboard. During the project cardboard samples were measured using Bendtsen, PPS, a L&W formation tester, OptiTopo, Ambertec formation, the STFI thickness tester and a visual comparison. The different methods were then compared to see if there is any correlations between them. The results showed that the visual comparison and OptiTopo correlates. The STFI thickness tester shows however no correlation with the OptiTopo and visual comparison, thus aren't suitable measuring bumpiness..

Möjligheter att minska kväveutlakningen genom att anpassa kvävegödslingen till variationer inom stråsädesfält

Due to excess precipitation that cause runoff, all soils in Sweden naturally leaches nitrogen.High leaching from arable land is an environmental problem when the runoff reacheswaters. In the international agreement, Baltic Sea Action Plan, the aim is to reduce therunoff of nutrients. Sweden has agreed to reduce its load of e.g. nitrogen to the Baltic Sea.One of the proposed measures is an increased use of site-specific N-fertilization, which hasbeen shown to increase nitrogen use efficiency and therefore also reduce the nitrogen runoff.Either yields are increased with the same total amount of nitrogen, or the total quantityof nitrogen is reduced with preserved yield levels, which is profitable for the farmers.The dynamics of nitrogen leaching differs between top dressing applications above orbelow the economical optimum. There is a consensus about a difference in the dynamics,but not about its magnitude.

Diurnal behaviour of cattle, sheep and goats on semi-arid pastures in Kenya

Studien genomfördes i Shompole i södra Kenya. I det här området är invånarna herdar som förlitar sig på kor, får och getter som sin enda inkomstkälla. De föder upp boskap under extensiva förhållanden, med naturligt bete som huvudsaklig födokälla för sina djur. Sex besättningar av den typen ingick i studien som genomfördes från mitten av december 2009 till mitten av februari 2010, vilket gav totalt 65 observations-dagar. Syftet med studien var att samla in födo- och förflyttningsbeteende hos nötkreatur, får och getter på bete.

Biståndsbedömning inom äldreomsorgen : En studie av genusperspektivet inom biståndsbedömning gällande hemtjänst

Our purpose was to study how care managers in practice evaluate needs in eldercare. A specific focus was set on elderly persons' sex, an area where former research show that decisions vary considerably. Were the care managers influenced in their decision making by the elderly person's sex? If so, in what ways? Were there variations in the definition of eldercare needs between the four chosen municipalities. And, finally, how did the care managers handle set criteria and priorities in their evaluation of such needs?The study was based on literature as well as interviews with eight care managers, chosen from four Scanian municipalities.We arrived at the conclusion that there is no specific difference in how the care managers evaluate eldercare needs in relation to sex..

Mañana mañana eller vi gör det här först? : Några unga människors reflektioner kring spansk, svensk och exemplarisk alkoholkultur

The aim of the essay was to describe what some young Swedish and Spanish people had to say about alcohol cultures. Some of the questions asked were: How are the alcohol cultures in Sweden and Spain described? What are the differences, and where do they come from? What would an ideal alcohol culture look like? The investigation also had a comparing angle, as I was interested in what the people valued in their own culture and in the others´. The result was that there hardly exist a perfect alcohol culture, but that the stricter Sweden as well as the liberal Spain both have positive and negative aspects. Differences in politics and culture seem to create variations in a society´s drinking customs.

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