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12171 Uppsatser om System theories - Sida 34 av 812

OSE och Linux : En studie om prestanda

There are some key elements which distinguish a general operating system, such as Linux, from a Real Time operating system, such as OSE. The later belongs to the category of soft Real Time systems while Linux is a general operating system, with significantly improved real time properties after version 2.6. These improvements make it interesting to compare the two systems.When comparing two operating systems, there are a number of issues which have to be considered. One way to measure the performance of the systems is by studying the time consumption for the same functionality and hardware.During the study, the items that appeared as the most important for the performance of the systems, were: process primitives, system primitives, interprocess communication, context switches and interrupt latency.This work demonstrates that it is possible and reasonable to do performance testing on two different operating systems. The implemented tests cover a number of basic functionalities, which appeared to be the most crucial ones for the performance of the systems..

Hazel- Ett mjukvarusystem för automatisk och optimal schemaläggning

This report documents the development of a software system for automaticscheduling called Hazel. This system is comprised of a server where an automaticscheduler has been implemented, as well as a web and mobile applicationthat allows users to interact with the system. The scheduler hasbeen developed with the functional programming language Haskell and usesa SAT-solver.Manual scheduling has long been the bane of managers everywhere, asmatching the needs of the employer with those of the employee is often adifficult and time-consuming task. There already exists several automaticschedulers that attempt to solve this problem. The issue with said schedulersis that thay tend to be expensive, or developed to only fulfill the needsof a particular organisation.

Mekaniskt brandsläckningssystem

Electrolux Laundry Systems is the world leader in manufacturing professional laundry equipment.The machines are used in the hotel sector, elderly care, in multifamily houses, laundry bars, and incommercial and institutional laundries.If there is oil or grease left in the clothes after washing may the heat from the dryer cause a chemicalreaction. This reaction may, under certain circumstances cause a fire inside the drum. Competitors toElectrolux has developed its own systems that extinguishes fire inside a tumble dryer and customershave expressed desire to purchase a fire-extinguishing system. Therefore, the project team receivedthe task by Electrolux to develop a fire-extinguishing system that extinguishes a fire in a tumbledryer.The purpose of the project has been to develop a system that both detects and responds to fire in anindustrial tumble dryer to meet the competitors and to satisfy customers' requirements.The goal was to develop a fire-extinguishing system for Electrolux Laundry Systems and develop afully functioning prototype.The project began with information searches on a variety of methods to both detect and extinguish afire. Subsequently, a number of different methods were used to develop a final solution and make aprototype.The result of the project is a fire-extinguishing system that extinguishes a fire inside a dryer.

Framgångsfaktorer i integrationen av elever med särskilda behov i den allmänna skolan

The purpose of this paper is to identify and analyze success factors in the integration of students with special needs in regular schools. This will be done through the case study of a nine year old autistic student in a small town public school ? a fairly representative case for the Swedish school system. The data collection methods used in the paper are; three participant observations of the student, and a qualitative interview with two of the student?s teachers.

Prestanda och precision pa? en enkortsdator i ett system med realtidskrav

The report aims to investigate how well a certain type of affordable embedded single board computer can hold up against today's more expensive computers in a computer system by doing various tests on a system with the specified requirements. The system has a Raspberry Pi as the single board computer which task is to control a camera based on coordinates obtained from a server as well as capture and stream a video signal on a network.The researches were conducted to check how much network traffic a single-chip computer sent in different video formats and how much CPU utilization was required. Studies were also made to ensure the accuracy of the camera control. The researches have been experimental, where several tests have been performed and analyzed.The results show that a sufficiently good accuracy can be obtained from the camera steering unit, in which two different servos have been investigated. When the video format MJPEG and H.264 are used, the single-chip computer is able to transmit a video signal up to 1280x720 at 15 fps.

Valfrihet inom den svenska hälso- och sjukvården: En studie av patienters beslutsfattande

Citizens? freedom of choice has been a subject of debate in Sweden for over 30 years. This study focuses on decision making processes among patients within the Swedish healthcare system. The main conclusions are that in contrast to how patients? freedom of choice is described within governmental bills and governmental inquires and reports, patients are not following the steps included in the rational model of decision making.

Hållbarhetsredovisning : Egenskaper hos styrelsen som påverkar valet att upprätta en hållbarhetsredovisning

The aim of this study was to examine the experience, knowledge and attitude to mandatory reports of mistreatments amongst first line managers and assistance nurses in municipal elderly care. The following questions were at the center of the analysis: how do the different professional groups view having to report their own organization? How can various factors affect the mandatory reporting of mistreatments? What knowledge do the different professional groups have of mistreatments and mandatory reporting? A qualitative research method was used to examine these questions in the form of semi structured interviews and a small document study. The interviews were carried out with assistance nurses and first line manages in elder care, we interviewed four respondents from both professional groups. The interviews were then transcribed and coded with help of a content analysis.

Lärarnas synpunkter på genus och jämställdhet i skolan : Hur lärarkåren inom skolväsendet arbetar med könsfrågor såsom genus och jämställdhet i skolan

The aim of this study was to examine how the interviewed teachers in one school observe their view of gender and equality regarding the educational system.  Accordingly, I would like to present my intention with this study, also be to analyze how the interviewed teachers way of working with matters of gender and equality, carry out as a portrait of their values considering the distribution in terms of gender. The research questions are the following: What is the teachers view on the concepts of equality and gender in school?How do different teachers talk about their way of working in relation to gender and equality in school?How is boys and girls images presented in the teachers descriptions in their discussion about gender and equality?This study is based on a fundamental qualitative method, where a handful number of teacher?s from one school were interviewed in order to obtain information and data for the examination. The interviews were analyzed and discussed in association to earlier research in aspiration to study different writer?s theories about the conception of gender and equality.

Analys av fingeravtryck

This report describes a system for verification of fingerprints against a previous created template. It describes how and why a fingerprint image must be processed before it can be used to either identify or verify a person. The method is based on special features of a fingerprint, called minutiae points. The whole process from image to matching is described, every step in the process with image enhancement, binarization, thinning and how to find the minutiae points. Also what false minutiae points are, how they arise, why they deteriorate the result, and how to handle them, is discussed.

Populära bilderböcker och genus: Genusstrukturerna i de mest utlånade bilderböckerna 2007

The purpose of this Master's thesis is to examine if stereotype gender patterns are showing, and how they are showing, in the picture books that have the highest number of loan in Sweden?s three biggest cities. It is also a purpose to show if these gender patterns can be compared to the outlook on gender in the curriculum. The method used is a qualitative text analysis. 13 picture books are analyzed on the basis of Yvonne Hirdman?s theories on gender and Maria Nikolajeva?s theories on children?s literature.

Kinas intåg på skogsvarumarknaden : idag och i framtiden

Because of the large economic growth in China there are many companies who have economic interests in the Chinese market. Also in the forest market companies have started to invest in China and the interest for the market is growing. The question is how the Chinese forest market will develop in the years to come? How will China?s entry on the market of forest products affect the global forest market? The purposes of this study are to describe production, consumption and trade of forest products, and China?s possible competitive advantage in the forest industry. The purpose of this study is also to describe how China?s entry on the forest market affects the world market of forest products.

Accessoarer för framtidens kontor

This thesis investigates if a system for small scale electricity production located in anurban environment can be profitable. The work has been divided up into two parts,one extensive literature study and one case study. The purpose of the literature studywas to investigate the area, resulting in a choice of which technology to be studied indepth in a case study.In the case study a system containing small scale wind turbines and photovoltaicsmounted on Gränby Centrums roof was examined. From data containing wind power,wind direction and total irradiation, possible production from a system weresimulated. Three products of each technology were examined in the simulations.From the simulated production an economic analysis was carried out, this toinvestigate if a system is profitable.

?Det är för barnens bästa som vi gör det?? : En kvalitativ studie om kriminalvårdens anmälningsskyldighet vid misstanke att barn far illa

Employees of the criminal correctional system have a duty to notify social services if they suspect that children are exposed to maltreatment, according to Chapter 14, § 1 SoL. Despite the obligation to report, studies show that this is not done at all times. The purpose of this paper is to describe and analyze how the criminal correctional system in Kalmar looks at notification if they suspect that children are exposed to maltreatment. To examine this, we used qualitative research method based on semi-structuring interviews; these were carried out with six employees, working in the criminal correctional system. The answers that emerged during the interviews have been analyzed using Yeheskel Hasenfeld theory of human services organizations, and trough previous research.

Studie av utvecklingsverktyg med inriktning mot PLC-system

Datoranvändningen i samhället växer för varje dag. Det är då viktigt att programvara håller hög kvalité, då vissa programvaror styr kritiska maskiner som exempelvis flygplan. Ett sätt att få kvalitativa programvaror är att använda bra utvecklingsverktyg. I detta arbete utvärderas fem olika utvecklingsverktyg: GNAT (Ada), Microsoft Visual C++, Microsoft J++, Borland Delphi och Active Perl. Inriktningen på utvärderingen är mot utveckling av programvara för PLC-system.

Möllevångstorget : en fallstudie utifrån två platsteorier

We are daily using the public space to move throughout the city. The public space is an important part of our city and it?s where a lot of social activities occur and a lot of different events take place. The outdoor environment in the city should offer the residents nice and varying places for staying. In this essay I will try to understand how the physical environment works and how people moves and behave in the public space.

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