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11215 Uppsatser om Stand-alone power system - Sida 53 av 748
Utvecklingen av energieffektiv teknologi i svenska datorcenter
This thesis investigate how energy efficient measures has spread throughout the data centers in Sweden. These questions are put up against a theoretical use of such concepts such as green IT, technological evolution, large technical systems and knowledge dissemination. These theories are used to answer the questions that are encountered during the study, such as how green IT is approached, how big of a role environmental thinking has had in the evolvement of these new technologies. The study has been conducted in a longitudinal manner, it is an observation of the phenomenon that is data centers over a longer period of time. 23 non structured interviews spanning over 27.5 hours of recorded material have been conducted alongside a study of archived material.
Vindkraft ? en alternativ drivkälla för tågtrafiken
Målet med detta examensarbete, utfört på uppdrag av Vectura Consulting AB, har varit att undersöka möjligheten att ansluta en vindkraftpark till järnvägens kontaktledningsnät. Möjligheten att koppla om vindkraftparken till järnvägens hjälpkraftnät, som bland annat förser växelvärmare och signalsystem med effekt, har också undersökts. Eftersom kontaktledningsnätet och hjälpkraftnätet arbetar med olika frekvenser och spänningar, 16? Hz och 15 kV respektive 50 Hz och 22 kV, måste därför en komplett krets för frekvensomvandling, spänningsomvandling och omkoppling tas fram. Projektet har begränsats till en del av Botniabanan, sträckan Örnsköldsvik-Nordmaling.I denna rapport har trafikfrekvensen på den valda sträckan på Botniabanan undersökts för att bestämma en genererad effekt till inkopplingspunkten, samt för att undersöka när det kan vara lämpligt att koppla om till hjälpkraftnätet.
Utveckling av programvara till ett inbyggt styrsystem
This thesis considers the development of the software for an, newly developed, embedded real-time control system, based on a Periferal Interface Controller (PIC). The control system is developed to be used for several different applications. In this thesis work, software for two different applications are developed. The first task is a time controlled system, while the other task is implementation of aPI-/PID-controller. A user interface is also developed and implemented.The time controlled system is an automatic horse feeder, which is used for feeding horses at certain predefined points in time.
Hur uppnås användbarhet? En studie av ett system vid Landstinget i Östergötland
När ett system införs, spelar det ingen roll hur god funktionalitet det har, om användarna av någon anledning inte kan eller vill använda det på ett effektivt sätt. I första hand bestäms användbarheten hos ett program av egenskaper hos detta och hos de aktuella användarna. God användbarhet beror av acceptans från användarna, kompetens hos användarna och användarvänlighet hos systemet.För att undersöka hur man kan uppnå hög användbarhet och därmed en hög grad av användande vid införande av ett nytt system, har vi gjort en undersökning av användbarheten och användandet av ett system vid Landstinget i Östergötland.Våra slutsatser visar på att utbildning och information är mycket viktiga faktorer för att uppnå hög användbarhet för ett system. Många har en motvilja mot att använda datorer och problem med att se vilka fördelar ett införande av ett nytt system kan medföra, något vi anser kan lösas med bättre utbildning och information. Trots att teorier om användbarhet funnits i över tio år, har vi funnit att det forfarande inte tas tillräcklig hänsyn till de grundläggande faktorer som påverkar användbarheten vid införande av ett system..
Lägesuppfattning vid en svensk stridsvagnspluton
Abstract: After their introduction, technical systems designed for Situational Awareness have changed the possibilities on the battlefield. Today, Swedish tanks use a system known as the TCCS. This system offers many advantages to a tank platoon, but does it also bring disadvantages? This essay examines pros and cons with the TCCS. To find these the author uses a Swedish Armed Forces analyze model in a comparative study.
Protected Designation of Origin, Protected Geographical Indication : their significance for the growth of the food industries in France and Sweden
Protected Designation of Origin (PDO) is a quality control system created by the European Union (EU) to protect integrity of certain food and drinks that are produced in a specific area in a unique way. By protecting these products, the EU can certify that the traditional region-specific methods of food and drink production are preserved. The EU countries that follow such a system are mostly from Southern Europe. For instance in France, the PDO system has helped improve the income for farmers, boosted the rural development and assured protection for farmers against the abuse of their brand and the selling of their products by outsiders. In Sweden, there are no PDO products yet, instead there is Protected Geographical Indication (PGI) and Traditional Speciality Guarantee (TSG) that are not as protective as PDO.
The influence of forestry stands treatments on brown bears (Ursus arctos) habitat selection in Sweden ? an option for Alberta forestry?
The brown bear population in Alberta, Canada has been decreasing, while the Swedish has been increasing and all the affecting parameters are not known. This study examined the difference in these populations to see if an explanation could be found in differences between the forest management. The aim of the paper was to see if stand treatments had an influence of brown bears habitat selection in autumn in Sweden and how the results can be used in Alberta. This was done by analyzing bear positions in Sweden with forest data, and comparing forest management data for the study area in Sweden with forest management data for Alberta. The results displayed that mature forests over 60 years that have been commercially thinned are selected by bears rather than forests over 60 years that have not been commercially thinned in.
Kommunikation mellan två medium
The aim of this project is to find a concept solution for a wireless transmitting system, installed to transmit data from a hydrophone of the ocean floor down by a wave power generator to the office on shore. The project is a literature review in which previous observations and tests are analyzed and put together to find a solution. The result was a comprehensive solution that includes an acoustic modem to transfer captured information from the bottom to the surface, wirelessly through the water. The information is then sent fron the surface on radio waves through the GSM network to the office on land. Between under and over water there are components to convert information between acoustic waves and radio waves, but also various types of modulation, such as amplitude and frequency modulation is required..
Orientalisk institution eller institutionaliserad orientalism? : En arkivvetenskaplig studie av Carolina Redivivas orientaliska handskriftssamling.
This thesis aims to shed light on the collection of Oriental manuscripts at the Uppsala University Library Carolina Rediviva and how the collection is a part of the collective memory. The main question which is central for this thesis is: have orientalism and structures of power influenced the acquisition, arrangement and methods of accessability regarding the Oriental manuscripts? If yes, in what way and why? If no, how has this been avoided?The theoretical framework consists of four approaches: phenomenology, sociology of knowledge, orientalism and power which are applied to the archival concept of collective memory. The main source of material consists of three parts: the historical texts which gives an informational framework regarding the time and place in which the manuscripts were collected, the catalogues in which the manuscripts are described and the transcripted interviews alongside correspondence. Methodologically the thesis is based upon a qualitative method which also partly makes up the foundation for the main material.
Prövning av ett praktiskt verktyg för att främja likabehandling i skolan
The purpose of this study was to examine the laws, govern documents and guiding principals that are available for schools and their work regarding the work against discrimination, insulting and other forms of harassments, and then to form a method for the schools to implement this work in practice.The work to counteract discrimination, insult treatment and other forms of harassments should be done both in a short term and a long term. In this paper there is a presentation of a project, a set of lessons that was created and carried out as a trial. The project aims for conscious making among children and students in school regarding norm, deviation, discrimination and power and the fact that equal treatment is hard to achieve. The basic purpose behind the project is to offer a tool to schools and teachers so that they can decrease the possible gap between the laws and the practice of these laws by creating awareness among students and other teachers. The long term work for achieving equal treatment should be done on a political level.
Klassifikation och ordning
This master thesis concerns the relationship the librarianhas to the libraries classification system. The system itselfis made by librarians for librarians and is only used bylibrarians. This raises the question of how the librariansrelate to their own system to create order. The empiricalmaterial consists of five in-depth interviews with librarians.Two theoretical approaches were used in the analysis of thematerial with one focus on the librarian?s professional rolland the other on the postmodern theories about humansneed for order.
Dynamisk modellering av kärnreaktor
The purpose of this thesis has been to develop a tool for modelling and simulating the nuclear plant Ringhals 3. The model should be used to improve the knowledge on the dynamics of the plant. Ringhals 3 is being upgraded to produce more power and a tool for analyzing the new operating conditions is needed.The work in this thesis has consisted of improving and developing an existing model of Ringhals 3 made with the modelling tool Dymola. The model has been validated by comparing the results of a simulated house load transient with data from the actual plant. Validation shows good agreement with data from the real plant.
Arbetsmiljöarbete enligt OHSAS 18001 : En inledande undersökning
There are regulations in sweden that require organizations to manage occupational, health and safetey (OH&S) issues in a systematic way. The contents of the management system vary depending of the activity of the specific organisation. An accurate management system is crucial in order to assure that rules and regulations are fullfilled. The OHSAS 18001 standard covering OH&S management is intended to provide organizations with the elements of an efficient OH&S management system. The work with this thesis was done at Swemat AB in Härnösand wich is a mechanical industry. In the thesis, the requirements of the OHSAS standard are compared with the current management system.
NÄR VÅLD FÖRSTÅS SOM LEGITIMT. : En maktanalys av polisvåldets performativitet utifrån erfarenheter hos våldsutsatta.
Violence is put in a specific context when the police are the perpetrator of violence rendering violence possibly legitimate through sovereignty. The possibility of legitimization of police violence raises important questions of how such violence is legitimized and how resistance is conceived of and defined. I have interviewed seven people in Sweden from different backgrounds, all of whom share the experience of having been subjugated to police violence, including threats, harassments and physical violence.This paper analyzes the performativity of police violence through the relations between police violence, power, sovereignty, subjectstatus and resistance, in order to understand how police violence is being legitimized and to understand its consequenses with respect to those subjugated to it. I?ve also analyzed if this violence is being politicized and, in that case, how politicization is made possible.
Användbarhet ? En fallstudie av ett point-of-sale system
Problem: Our opinion is that it is important to consider about usability in system development. In this thesis we will focus on usability in point-of-sale systems. The point-of-sale system we base this thesis on is Extenda Retail. Our case study is performed on Ica Kvantum in Bromölla, which implemented Extenda Retail about two years ago. Purpose: The purpose of this thesis is to figure out what important factors there are to consider, in usability aspects, when developing point-of-sale systems, with focus on the cashier.