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6494 Uppsatser om Large technical systems (LTS) - Sida 62 av 433

Modelering av Wideband : Code Division Multiple Access

Today wireless transmission of data is becoming more and more popular and the need for faster transmission rates is increasing. Since the bandwidth is limited it is important to try to use it to the fullest. CDMA is a technology that allows multiple accesses on the same frequency and time thus making it very bandwidth efficient. The CDMA technology was first introduced in the second generation?s cellular systems but has since then been improved and is reused in today?s 3G systems as Wideband CDMA.

Inkongruenta styrmodeller: En fallstudie av reparation och underhåll i ett industriföretag

In theory, the management control of maintenance functions is described as problematic due to the nature of the work performed in the unit. The purpose of this thesis is to examine these predicted problems in practice. Further,the thesis aims at identifying how these control problems may affect the relationships between the maintenance department and its internal customers. A case study has been conducted in one of Sweden?s largest industrial companies to investigate the said control problems in practice.

Den trådlösa massan - svärmbeteende och kollektiv handling

This essay seeks to analyze the consequences of modern information and communication technology for collective action within the framework of social movements. With references to the protests in Seattle 1999, the essay argues that the emergence of distributed collective action is closely related to the use of technology, for example cell phones and Internet. This distributed collective action can be characterized by its decentralized and self-organizing features, forming a global pattern emerging from local interactions. Whereas contemporary theories of collective action can be ´stretched´ to fit these aspects, they lack analytical tools to describe and analyze such systems. Further, their rejection of classical crowd theory is problematic, since it contains valuable insights.

Betydelsen av utfodring under sintiden, sintidens längd och kalvningsintervallet med avseende på kons hälsa under kommande laktation

This essay describes and compares the extensive reindeer management to the more intensive, but grazing based, sheep management system in Sweden. Differences and similarities between the two production systems will be investigated by elucidating the economy, land use and possibilities to influence production and economy through breeding, feeding and product development. The reindeer management area covers the northern part of Sweden whilst the sheep management is dispersed over the country. Both reindeer and sheep are ruminants and have relatively high demands on the quality and digestibility of the feed however reindeers graze on mountain-and forest lands whilst sheep often graze inaccessible areas or cultivated grasslands. Selection intensity is generally lower in the reindeer management compared to the intensity in sheep breeding.

Jämkningsregeln 29:5 ABL : -Jämfört med motsvarande dansk rättsregel

There are no set guidelines on how to interpret the criteria?s in the adjustment rule within the meaning of the companies act. The criteria?s are not discussed in literature and the Swedish case law in this area is very limited. A reason for the limited use of the adjustment rule is the slow and very costly process, which does not grantee the outcome of the case.

Konsumtion av försäkringsbeloppet i ansvarsförsäkring : Är skadeståndslagens jämkningsinstitut tillämpliga?

Our digital society encompasses nowadays different channels, which includes social media where many users consider it as a platform where they can fetch news or exchange news and information. This leads to a large spread of news exchange in a very fast speed, which involves the global users within social media to be a part of this social interaction. This study is focused on how Twitter affects the usage of the user?s news consumption. By reaching out to our specific target audience, which includes Twitter users in Sweden, we made a web based survey with a content of relevant questions.

Stomme i småhus ! : - En teoretisk studie av olika bärande vägglösningar !

This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.

Hydroakustisk kommunikation med bandspridningsteknik

This thesis investigates techniques for stealth hydroacoustic communication using spread spectrum. The Swedish naval defense organisations have a vision that all their units should be able to communicate with each other, even between underwater vehicles. But the properties of water makes it a complex channel to use for wireless communications. Radiomagnetic waves have very limited range in water, therefore acoustic waves are used. In this report the basics of wireless communication systems are described including source coding, channel coding, modulation techniques as well as different techniques for spread spectrum.

Ekonomistyrning i primärvården - En jämförelse mellan privata och offentliga utförare

The aim of this thesis is to analyze and explain the similarities and differences in management control between a private and a public primary care company. A comparative case study was developed based on one public and one private primary care company in Stockholm County Council. The framework of Otley (1999) was used to define and limit the area of management control systems, according to his five factors. For the analysis of the empirical results Hood's (1995) seven doctrines of New Public Management was applied, and customized to fit the purpose of the study. The results indicate that the differences between the two organizations are very limited.

Utveckling av fällbart kartbord för militära ledningsfordon : I samarbete med BAE Systems Hägglunds

I dagsläget finns ett problem med det fällbara kartbord som används i militära ledningsfordon. Större fokus på säkerhet och nya förhållanden har lett till att ett nytt bord behövs som är anpassat för den nya miljön och användarna. Arbetet har utförts i samarbete med BAE Systems Hägglunds och handlar omutvecklingen av ett nytt fällbart kartbord till det bepansrade bandfordonet BvS10 MkII.Utgångspunkten har varit att skapa ett mer användarvänligt bord som dessutom är billigare och väger mindre. Slutresultatet baseras till stor del av energonomianalys där höjd och lutning på bordsskivan analyserades med hjälp av datorsimulerade människor baserade på antropometriska data. Utöver ergonomianalysen har även ett koncept på fällning av bordet samt en hjälpmekanism till denna tagits fram.

Är OSSg2 ett lämpligt steg mot Open Source på verksamhetskritiska IT-system?

Sun Microsystems chose its own Open Source path by not following competitors in their commitment toGNU/Linux. Sun instead created its own Open Source project from the source of Solaris under the name ofOpenSolaris. The business model of OpenSolaris belongs to the new and more commercially viable OpenSource, referred to as OSSg2. This survey was based on articles on the adoption of Open Source in organizationsand István Orci?s publication Kritiska IT-System.

Utveckling och utförande av frekvensstudie vid Rapid Granulator AB

The object of this examination project is to produce a method of work sampling at Rapid Granulator AB. The aim is to perform the method at the company and evaluate if it is executable. The study is delimited to the basic construction of the 45-series in the assembly hall.Preparations to produce the method of the work sampling resulted in definitions of activities, a form and a product tree. Several days were spent studying the assembling to learn and understand the entirety.The work sampling result showed a large amount of no value adding time that was used in the assembling. Some of the activities could be reduced and we observed some problems during the assembly process.

En analys av testprocesser med TMap som testmetod

Today there are many system development projects that break both budget and time plan. Often this depends on defects in the information systems that could have been prevented. The cost of test can in some cases be as high as 50 % of the projects total cost and it's at the same time an important part of development. Test as such has moved its focus from the software it self and its faults to a wider perspective on whole infrastructures of information systems where assure a good quality is important. Sogeti in the Netherlands have developed a test method called TMap (Test Management approach) that can be used for structured testing of information systems.

Chinese Remainder Theorem

Chinese Remainder Theorem is used to solving problems in computing, coding and cryptography. In computing we can compute with shorter numbers instead of large numbers and this will make the computing-process faster and easier. In coding it can be used for error-searching and error-regulating.Cryptography means that we can send a coded message and that no one will be able to read it without the decode-key which is based on prim-numbers. I am writing about the history of mathematics and how the number- and decimal number-system is used in Babylon, Egypt, Greece and in China. Abacus was a very important aid to calculate advanced mathematical problems.

CSR, ett spel för gallerierna? : en studie om varför ett antal Svenska företag väljer att arbeta med CSR

Social inequality, economic imbalances and greenhouse gas emissions are some of the greatest risks threatening society today. Society has become more aware of these risks and has started to demand firms to take more responsibility. During the last 30 years firms and mainly large firms has chosen to work with something called CSR. CSR stands for Corporate Social Responsibility which is the work firms engage with to take responsibility for environment and society as a whole. Scientists and business people has taken two sides towards CSR, one side argues that CSR cost more than it tastes and the other side argues that firms which engage with CSR will gain economic benefits.

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