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3203 Uppsatser om Field measurements - Sida 46 av 214

Träbroar för järnvägstrafik

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Energieffektivisering på gott och ont - Studie av energiåtgång och materialtillverkning

I takt med att besökare och patienter ökar måste kontinuerligt Östra sjukhuset verksamhet utvecklas. Detta medför omläggningar i trafiken och förflyttningar av verksamheter. Idag finns flertalet brister kring Östra sjukhusets fysiska planering som behöver ses över, dessa är bland annat trafikflöden, säkerhetsaspekter och parkeringsmöjligheter.Rapporten redogör för förändringar i den fysiska planeringen som förbättrar dess utformning. Genom studier av relevant litteratur och diskussioner med expertis har förslag av problemområden tagits fram. Dessa har sedan bedömts efter listor av deras respektive för- och nackdelar som kunnat urskiljas.Arbetet visar framtagandet av ett väl fungerande förslag som kan verka som en bas för idéer till nutida och framtida förändringar kring den fysiska planeringen.

Vildsvinsskador inom jordbruket : hur stora är förlusterna?

Problems with wild boars are increasing in Sweden and some people argue that the wild boar population must decrease. This is mostly the opinion by farmers, while the hunters want more wild boars in Sweden. Today the population is the strongest in the south of Sweden and in the eastern parts of the country. However the population is growing stronger in other parts of Sweden as well. The population origins from these areas where they escaped from pens around 1970.

Sälj- och köpprocessen av IT-relaterade tjänster

Background: Companies and organizations of today spend large amounts of money on IT-based business solutions. Such business solutions normally include business- consulting and software-creation (IT-related services). Due to the rapid development of the technology within this field of business the IT-customers find it difficult to select among potential suppliers on objective grounds.Purpose: To increase the understanding for the professionl approach of the people involved in the sales- and purchase process of IT-related services in a business-to-business context. The study is taking the buyers'as well as the sellers'perspective into account when analyzing the process. Method: The empirical findings were collected from eight companies in Linköping and Stockholm.

Bachelor nurses? experiences of working during a natural disaster: The earthquake in Yogyakarta, Indonesia, May 27th 2006

This is a Minor Field Study (MFS) which is a scholarship financed by the Swedish International Development Cooperation Agency (Sida). The study was held in 2007 in Yogyakarta, Indonesia and is based upon retrospective qualitative interviews with five Bachelor nurses who experienced the disaster work during the earthquake 27th of May, 2006. The aim of the study is to explore the experiences, feelings and thoughts of Bachelor nurses who were involved in this natural disaster. The interview, transcription and analyse work were made one year after the earthquake were a qualitative content analysis method was used. Two group interviews were held at the University of Gadjah Mada.

Starkare varumärke genom användande av sociala medier : En kvalitativ fallstudie av Volkswagen Sverige

Problem-definition: How companies work with social media to strengthen their brand equity and what other purposes might lay behind this usage.Purpose: How Volkswagen Sweden use social media in order to strengthen their brand equity.Method: Qualitative case- study of Volkswagen Sweden where a number of respondents will be interviewed with the help of a semi structured interview guide.Theories: A number of theories in the field of brand equity and communication theory will be used in this paper, some of these theories are, Post-model, Social technographics ladder, brand equity and word of mouth.Empiric: A semi-structured interview guide will be shaped from theory and answered through interviews with people who have knowledge within the field.Conclusions: Extracted from the results the research members has identified a number of important factors that business should consider when they work with social media or planning to. They have also answered how business can strengthen their brand equity with social media..

På spaning efter kreativiteten och dess självbild... En studie av unga kvinnor

The aim of this study was to examine creativity, measured with four different tests, and self-image in 18-19 year old women (N = 30), and their earlier presence of imaginary companions. The result showed that there were many correlations between the different creativity measurements. Self-image correlated significant with fluency of ideas in one test. "Psychological health" along with "skills, talent and abilities" were the two most important self-image aspects for creativity. We found negative relationships between imaginary companions and creativity, but a positive relationship with self-image.

Police Science - expansionen av ett kunskapsfält : En studie om vetenskapligt gränsdragningsarbete i 1930-talets Chicago

In 1929, the Scientific Crime Detection Laboratory was established in Chicago?the first of its kind in the United States. The purpose was to engage in practical use of scientific methods in the detection of crime. In 1930, the institute published its own periodical called The American Journal of Police Science. Applying the theory of boundary-work, this essay analyses how the novelty institute argued its legitimacy as a scientific establishment through the expansion of Police Science as a collective field of knowledge.

Scilla-släktets användningsmöjligheter i Sverige : med utgångspunkt i ståndort, egenskaper och historia

This study investigates the main question ?How can the small, blue spring bulb genera Chionodoxa, Puschkinia and Scilla be used in Swedish outdoor settings, with main focus on the genus Scilla?? This is done by answering four sub-questions: Which of these Scilla-species are hardy in Sweden? Which are their characteristics and habitats? What does their history of application look like? What is commercially available today? The aim of the work has been to make a survey of hardy and available Scilla-species, their character-istics, field of application and history. The purpose is to create a tool in the work with geophytes in different outdoor settings in Sweden, and to contribute to the discussion of new fields of application for bulb plants, such as Chionodoxa, Puschkinia and Scilla. The questions are answered through literature studies and discus-sions with knowledgeable persons in the field. First, an investigation and a survey of Scilla-species hardy and commercially available in Sweden, will be presented, where information of appearance, charac-teristics, habitats, varieties and historical and present application of the species will be found. With this background, a discussion around all the questions, today?s use and also new fields of application, has been carried through. The conclusions made from this study, are that there are today 15 Scilla-species commercially available and hardy for the Swedish climate.

Energioptimering av Hemsö fästning med förslag på energieffektivare systemlösningar

The report is a master thesis about energy efficient measures for an underground facility Hemsö fortress.Several proposals are evaluated economically.Statistics of the electricity used and measurements of several heat pumps are analyzed to find energysavings potentials.The results indicate that several units of a dehumidification system are responsible for over 70 % of theyearly electricity cost. The air that is being dehumidified by these units can otherwise cause damage ofculturally important interior designs.The proposal with highest profit suggests an alternative method for dehumidification. The cooler in theair handling units in Hemsö fortress have capacity to dehumidify the air. However complementary fansneed to be installed to circulate humid air towards the air handling units. The solution can be implementedin three different locations within the facility.

GIS-modellering av habitat för vitryggig hackspett (Dendrocopos leucotos) som hjälpmedel i naturvårdsplanering på landskapsnivå :

The white-backed woodpecker is a forest bird being critically endangered in Sweden. The species is dependent on older forests rich in deciduous trees and dead wood. The main problem for the survival of this species is present shortage of habitat. Conservation work on this umbrella species is at present focused on finding remaining or emerging habitat networks. Large areas are scrutinized in search for suitable habitats to be protected or managed for the species sake.

Födoval hos juvenil piggvar (Psetta Maxima) : effekter av bytesstorlek

The effects of prey size on prey choice in different cohorts of juvenile turbot (Psetta maxima)were studied in three nursery areas at Gotland. Prey length measurements showed that gobies(Gobiidae) increased in average length during the season, while mysids (Mysidae) did not.Experiments on predation capacity of different size classes of turbot on different size classesof prey showed that juvenile turbot easily can eat gobies that are up to two thirds of their ownbody length, while the body size of turbot does not have any effect on the predation capacityon mysids. Stomach content of 217 turbots, less or equal 35 mm, was analysed to see if therewas any change in diet during the season, but there was no significant change in diet. Theoverall conclusion was that early settlers most likely have an advantage due to greater accessof alternative prey..

Tillväxt hos Husmossa (Hylocomium splendens) i boreal skog och växthus : effekter av ökad vattentillgång

Hylocomium splendens (Glittering wood-moss) is a common species in the Nordic countries and can be found in many different types of boreal forests. It usually forms dense moss carpets on the forest floor. The shoots grow in segments and new segments form annually on the previous years growth. The size of the segments is probably regulated in a high extent by local micro environmental conditions. Previous experiments suggest increased growth of H.

Prefabricerade ramper i stålfiberbetong

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Den kvantandliga diskursen : En undersökning av nyandlighetens möte med kvantfysiken

This paper aims to describe and elaborate on a recent discursive change within the new-age movement. Since the seventies and the publishing of speculative popular science books like The Tao of Physics by Fritjof Capra and The self-aware Universe by Amit Goswami, the idea that quantum physics resonates with spirituality has become the topic of hundreds of books and movies.The quantum-spiritual discourse has three distinct ways to approach quantum physics in its discussion on spirituality: The parallelistic approach which emphasizes the similarities between eastern philosophies and modern physics, the monistic-idealistic approach which tells us that mind is the foundation of matter and the scientific spiritual approach which tries to explain spiritual claims scientifically. In the quantum-spiritual discourse, quantum physical phenomena (e.g. non-locality and entanglement) are being called upon to validate metaphysical statements. The primary assumption of the discourse is that the shift of paradigm due to the establishment of modern physics also is a shift of paradigm of spirituality.With the object to examine the common claims made in the discourse, cross-references between spiritual arguments and facts of quantum physics are being made.

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