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824 Uppsatser om Structural cell - Sida 16 av 55

Algoritmer för objektdetektering i SAR och IR-bilder

The first part of the thesis consists of a brief introduction to the general principles of target detection and the sensor-systems used. In the following part there is a theoretical description of the algorithms this thesis focuses on. The detection algorithms described in this paper are called Cell Average, Ordered Statistics, 2parameter and Gammadetector. Two different discriminators called Extended Fractal Features and Quadratic Gamma Discriminator are also described. The algorithms are tested on three different types of data, simulated SAR-pictures, authentic SAR-targets and IR-pictures.

Alice Springs drivet av solenergi - En jämförelse mellan solceller och Stirlingsystem

In the middle of Australia there is a city called Alice Springs. The city has one of the highest amounts of daily sunshine hours and sun irradiation in the world. The Australian Government runs a project called Solar Cities, and Alice Springs is one of the participators. The main part of the goal with the Solar Cities project is to increase the amount of electricity generated by solar power and by doing that lower the impact on the environment. This thesis examines the possibilities for construction of a large scale solar power plant in Alice Springs. This is done to determine the potential of creating a more sustainable energy system in the city.

Konstruktion av statorstomme för synkrongenerator : Förslag på design av statorstomme för användning i vertikalaxlade vindkraftverk

This thesis describes a conceptual design of a support frame for a synchronousgenerator used in a vertical axis wind power plant. In this system the generator isplaced on ground level. The thesis also considers the design of housing for thesupport frame and generator. The concept presented in this report is based on anearlier design. Besides geometric design, simplified simulations has been run in orderto optimize some of the parts included in the construction considering naturalfrequencies and structural strength.The result is presented as CAD-models andan assembly drawing..

An assessment of public procurement of timber buildings : a multi-level perspective of change dynamics within the Swedish construction sector

The construction and use of buildings in the EU accounts for half of the EU?s extracted materials and energy consumptions, and a third of greenhouse gas emissions. In the past decade, the construction sector has responded to such concerns by focusing on post production energy efficiency. However, new findings indicate that upstream construction processes influence emissions significantly ? necessitating a shift in focus to include material choices and building processes.

Inverkan av röjning och gödsling på mikrofibrillvinkeln i tallens (Pinus sylvestris L.) ungdomsved

Tall (Pinus sylvestris L.) är ett av Sveriges viktigaste trädslag. Med ökad efterfrågan på vedråvara samt ökade krav på naturavsättningar är det viktigt att öka produktionen i skogen. Röjning och tidig gödsling ger ökad volymproduktion men kan ge icke önskvärd påverkan på vedegenskaper som ökad mikrofibrillvinkel (MFV). MFV är vinkeln mellan mikrofibrillerna i cellväggens S2-lager och cellens längdaxel och påverkas av ståndort samt konkurrensen om ljus och näringsämnen. Höga MFV resulterar i sämre kvalitet på papper och sågade trävaror.

Optimering av fackverksmodellering : Ett makro för Tekla Structures

This project is the result of a cooperation between HalmstadUniversity and EABAB. The aim of the project was to create a macro that would help EABAB automate the process of designing steel trusses. When run in Microsoft Excel, the macro imports and processes coordinates from a calculator program. The data is then imported into the Building Information Modelling software Tekla Structures, which creates a 3D structural model of the steel truss.The macro saves much time in the project planning process and also helps minimize the risk of design flaws caused by human error. .

Förstudie för automatisering av manuell lödning

This degree project has been carried out in cooperation with Enertech AB in Ljungby and is pilot study to automating all current manual soldering. The soldering process accounts for a large part of the processing cost in the production of a heat pump. The process is also a quality risk and has a major impact on the lifetime of the final product.The Main task of this project has been to evaluate automation of the soldering process, to develop automation solutions and a principle layout, to draw the design changes required for the automation and to calculate the supposed solution.This pilot study has resulted in a suggested automation solution using laser as a heat source for soldering. Calculations of the solution show that a automating a laser soldering cell is very profitable..

Säkerhetsaspekter vid laddning av elfordon innehållande litium-jonackumulatorer: beskrivning av risker samt en studie av kontrollerande regelverk

Fortum har i samarbete med Stockholms stad presenterat en gemensam vision för att göra Stockholm till en av världens främsta miljöbilsstäder till 2030. Ett viktigt led i detta mål är introduktionen av nya elfordon innehållande litium?jontekniken på den svenska bilmarknaden. Då det befintliga regelverket angående laddning av ackumulatorer i fordon inte nämner den nya tekniken har frågeställningen kring luckor i lagstiftningen lyfts fram av Fortum. Det övergripande syftet med studien har varit att undersöka risker och regelverk kring laddning av elbilar innehållande litium?jonackumulatorer.

Engergieffektivt Bostadsområde : Förstudie Till Aktivhusområde i Halmstad

In the thesis we have shown that it is possible with current technology, to buildneighborhoods that are largely self-sufficient. We have obtained some information aboutongoing work in the field of energy efficient buildings and active house which we have usedto develop a model. The feasibility study for Ranagård we have e.g been forced tofollow laws on groundwater covered, resulting in the construction of basements for singlefamilyhome is not possible. The model that we have built up overtime has been the central part of the work. The model illustrates very well what an activehouse neighborhood means and potential of such an area.

Den oändliga berättelsen : En schematisk och tematisk analys av Michael Endes Den oändliga historien och två adaptioner

The thesis of this essay is concerned with how two adaptations of The Neverending Story have used the novel's vivid intertextuality and dialogism. The essay also discusses the possibilities of adaptation studies and whether an adaptation can explain a novel by emphasizing its themes..

Den moderna matens uttryck : en etnologisk studie om modernitet i Husmoderns Köksalmanack

The aim of this study is to point out different aspects of modernity in the cookbook Husmoderns Köksalmanack. It is a publication that has been published annually since 1933. The books have been studied in the light of Anthony Giddens´ theoretical perspective on modernity. The study is based on three different themes that all can be linked to modernity. These themes are; Time and space, Locally, regionally and globally, and Advice.

Två presentationstekniker för grafer : deras styrkor respektive svagheter inom en bioinformatisk kontext

This degree project has been carried out in cooperation with Enertech AB in Ljungby and is pilot study to automating all current manual soldering. The soldering process accounts for a large part of the processing cost in the production of a heat pump. The process is also a quality risk and has a major impact on the lifetime of the final product.The Main task of this project has been to evaluate automation of the soldering process, to develop automation solutions and a principle layout, to draw the design changes required for the automation and to calculate the supposed solution.This pilot study has resulted in a suggested automation solution using laser as a heat source for soldering. Calculations of the solution show that a automating a laser soldering cell is very profitable..

Metallhantverket i Uppåkra ? en studie av ett hantverksrelaterat material

The aim for this essay is to identify and distinguish the metal casting of Uppåkra during late Iron Age by examine related material that primarily consist of finds made with a metal detector. I intend to, by analysing maps, concentrations in the detector material and probable constructions within the settlement, find patterns that can indicate a metal casting activity. The results of the essay show that a number of concentrations can be seen and that they both indicate metalworking activities and to some degree a structural specialization in the settlement. The exclusive artefacts also indicate that Uppåkra was a settlement with over-regional functions when it comes to traditions dealing with metal casting..

Socialtjänstens utmaningar i mötet med minoritetsgrupper : ? En kvalitativ studie om muslimska kvinnors upplevelser och erfarenheter av bemötandet inom socialtjänsten.

The purpose of this study is to investigate the lived experiences and treatment of Muslim women in their encounters with the social services. The primal themes for this study was: How does Muslim women experience the treatment of their case in the social services in a situation of need? How can the encounter and experience with the social services affect the clients trust in the social services?  What is the ideal treatment of women with a Muslim identity by the social services?The aim of this study was to investigate and capture the respondents lived perceptions and experiences with the social services, and thus the qualitative interview methodology was implemented to answer the research questions and hypotheses. Seven interviews with Muslim women were conducted in various districts of Stockholm, a city in northern Sweden. Five of the respondents were of ethnic Swedish origin and two were of other ethic origin.The results show that the majority of the respondents experienced a negative response at least once when in contact with the social services.

Ideellt kårengagemang - Drivkrafter och resultat

The purpose of this study was to examine how modern information and communication technology influence collective action within the framework of social movements. By studying the protests in the Arab World 2011, and focusing on the social movements in Suleimanya in northern Iraq, by observation taken on place, the essay discusses that collective action is closely related to the use of technology, for example cell phones and Internet.Result shows that modern communication technology has enabled immeasurable access andconnection between individuals throughout the world, which seems to be different from previouscollective action. The new communication channels in the form of social media, has been used for the dissemination of information and news, documentation, organization and membership recruitment in the social movements in the Arab World and Suleimanya. The new social movements have the tendency to be decentralized and flattened organized, they are now self-organizing and that they only do a whole as global patterns, as evidenced by the social movements in the Arab World andSuleimanya..

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