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3234 Uppsatser om Operating systems - Sida 4 av 216
Att dela eller inte dela? : Vad som möjliggör respektive förhindrar produktdelningssystem
Product sharing systems is recently starting to become a more common phenomenon. Carpools exist in more than 40 Swedish towns and both Stockholm and Gothenburg have established bicycle sharing systems. Other products for which sharing systems have been established throughout Sweden are clothing and tools. From the point of view of the consumer, product sharing systems is a form of consumption which can be placed somewhere in between renting and privately owning a product, where the consumers usually pay a membership fee or a monthly fee to have access to the products whenever they need them. The concept is relatively new, and there are many products for which product sharing systems do not exist.
Verksamhetsstyrningens inverkan på målprioritering - En kvalitativ fallstudie av två vårdcentraler i Stockholms läns landsting.
This study aims to examine the effect management control systems have on which goals health centers prioritize. The management control systems of one privately owned and one publicly owned health center have been studied through a qualitative case study. Robert Simons (1995) framework with four levers of control (diagnostic control systems, interactive control systems, belief systems and boundary systems) has been used to structure the study. For both health centers we found a conflict of interest mainly between the diagnostic control system and the beliefs system, where the diagnostic control system is biased towards quantitative goals and the beliefs system is mainly biased towards qualitative goals. However, despite the unbalanced levers of control the studied health centers have been able to reach a well functioning compromise between quantitative and qualitative goals..
Vikten av säkra nätverk
The purpose of this thesis is to show how to use vulnerability testing to identify and search for security flaws in networks of computers. The goal is partly to give a casual description of different types of methods of vulnerability testing and partly to present the method and results from a vulnerability test. A document containing the results of the vulnerability test will be handed over and a solution to the found high risk vulnerabilities. The goal is also to carry out and present this work as a form of a scholarly work.The problem was to show how to perform vulnerability tests and identify vulnerabilities in the organization's network and systems. Programs would be run under controlled circumstances in a way that they did not burden the network.
Undersökning av Informationssystem i småföretag : En studie av hur Växjös små företag är nöjda med sina Informationssystem
In todays sociaty the use of information systems is wide spread and many corporations and buisnesses both in large and small spread make use of more advanced and sopisticated systems. Larger corporations have their own IT sections that maintain and updates their systems on a daily basis. They have the money and resources for it by how do the small businesses coop with it. How satisfied are the small businesses that are maybe runing on systems that might not be supplying the needs that the business is in need of. In this paper we investigate this question in the form of a questionnaire.
SAB-systemet och Yahoo! En jämförelse rörande traditionell och ny klassifikation
The aim of this Master thesis is to investigate the similarities and differences between a traditional and a new classification scheme. Two classification systems are compared, "The Swedish Library Classification System" the SAB-system - and Yahoo!. The SAB-system has been used in Swedish libraries since the beginning of the 20^th century, and Yahoo! has been online since 1994. Yahoo! has a Swedish version of its international original, which is used in this study to get a similar starting point with the SAB-system. The method used for this is a content analysis, which in this case is not a quantitative analysis.
Tillämpning och utvärdering av kriterier för eTjänstetydlighet och handlingsbarhet : Actability, eTjänstetydlighet, MA/SIMM
A sequence of actions in the world have influenced the information science, one of these actions is the lateral movement in how companies use their IT-systems. IT-systems today, in comparison to before, are used by companies to improve their relationship with their customers. Every year a big amount of money is spent on developing and improving IT-systems. That is why it is important to develop and create IT-systems that are clear, and which encourage, enable and simplify a user?s action.
Verksamhetsstyrning : en fallstudie av en revisionsbyrås anpassning och förväntningar vid avskaffandet av revisionsplikten
This study examines how a company adapts its operating control when the environmental circumstances are changing. This is a case study with a qualitative approach which is based on interviews. The main purpose is to examine how an accounting firm adjusts its operating control in order to meet the abolishment of the statutory auditing. Another purpose is to describe how the abolishment of the statutory auditing will influence or have influenced the choice of measures in the balanced scorecard. The question this study aims to examine is: How do audit firms adapt its operating control in order to meet changes in the environment? This question lead to a second question which the study also aims to examine and is How is the abolishment of the statutory auditing influencing the accounting firms goals, measures and focus in the balanced scorecard? The conclusion of this study shows that the abolishment of the statutory auditing has had an influence on the balanced scorecard.
Diagnos av stiktion i reglerventiler för prediktivt underhåll
This master thesis reviews advances in detection and diagnosis of static friction (stiction) in control valves. Control valves suffering from stiction results in oscillating control loops which in turn decreases both the process stability and reliability. Perstorp AB sees a necessity to automatically detect stiction in valves before the effects of the malfunctioning valves have become too severe. This thesis presents an introduction to maintenance, control loops and how stiction in valves can affect performance of control loops.A selection of methods presented in the literature are introduced and examined using normal operating data from the site in Perstorp. Common for all selected methods is their intuitive ideas and that they are based on normal operating data and minimum amount of process knowledge.
Betydelsen av förändringar i DuPont-komponenterna för framtida operativ lönsamhet
The DuPont formula is one of the most well known and basic tools used for financial statement analysis and is highly useful for understanding firms strategies and operating environment. Previous studies on American listed companies have also shown that analysis of the changes in the DuPont components is useful in forecasting contexts. In this thesis we test whether disaggregating the change in return on net operating assets provides incremental information about future performance for Swedish listed and not listed companies. We find that the change in asset turnover is a leading indicator of increased profitability for both listed and private companies, regardless of size. We also find evidence that the usefulness of the disaggregation for understanding future performance is greater in capital intense industries and lesser in service industries..
E-BUSINESS, WHAT IS IT GOOD FOR: AN EXPLANATORY STUDY OF FIVE COMPANIES? E-BUSINESS SOLUTIONS
The notion of firms interacting with technology is not new; these types of systems were already in place in the mid eighties. E-business users worked with connections between their inbound logistics and procurement systems, and suppliers? order-entry systems. When these connections were described for the first time the vertical links between two, or more, value chains in a value system received more attention in firm strategy. The design of the linkages in the value system was said to be a product of the need for coordination and relative bargaining power.
Bedömningsgrunder och reningskrav för avloppsreningsverk, 25-2000 pe, i Laholms kommun
The aim of this project was to look into ten small sewer systems in the municipality of Laholm, in Sweden, in order to work out common assessment grounds for them. The sizes of the systems for purification of wastewater were within the range of 25 to 2000 population equivalents. Our method was to study literature, the laws and regulations applicable and the files at the municipality. The conclusion is that every sewer system is different and every situation is unique. We concluded that based on laws and assessment grounds sewer systems equal in size and pollution load ought to have similar demands attached to them.
Ståndort och växtval på takterrasser
In the country of Jordan, egg production is very important economically, but several bacte-ria are involved in food borne diseases transmitted from eggs or other poultry products. The most important are Salmonella spp., Campylobacter jejuni and Escherichia coli. In Jordan two different housing systems are used for hens in large scale egg production; con-ventional cages and litter floor systems. Eggs from four different farms were analysed and compared to see if a difference could be found regarding the presence of pathogenic bacte-ria on the egg surfaces between these two systems. Total number of aerobic bacteria was analysed, the presence of Salmonella spp., C.
EKONOMISTYRNING I EN MOTORVERKSTAD: En analys av centralt ställda krav ur ett operationellt perspektiv
The purpose of this thesis is to analyze the design and function of an engine production management?s control system and its intended function, and to contrast it with the present management control systems in use on an operational level. Interviews conducted with employees from all levels of the engine production are the main source of this study?s empirical foundation. Information has also been gathered from relevant written material such as annual reports, internal documents etc.
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.