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1189 Uppsatser om Transmission line - Sida 1 av 80

Microstrip Solutions for Innovative Microwave Feed Systems

This report is introduced with a presentation of fundamental electromagnetic theories, which have helped a lot in the achievement of methods for calculation and design of microstrip Transmission lines and circulators. The used software for the work is also based on these theories. General considerations when designing microstrip solutions, such as different types of Transmission lines and circulators, are then presented. Especially the design steps for microstrip lines, which have been used in this project, are described. Discontinuities, like bends of microstrip lines, are treated and simulated.

Implementing a receiver in a fast data transfer system : A feasibility study

This report is an outcome of a master degree project at Linköpings University in co-operation with Micronic Laser Systems AB. The purpose with this master degree project was to investigate how to implement a receiver in a data transfer system. The system consists of several data channels, where every channel consists of three parts: driver, Transmission lines and receiver. The driver send low amplitude differential signals via the Transmission lines to the receiver that amplifies and converts it to a single-ended signal. The receiver has to be fast and be able to feed an output signal with high voltage swing.

Below-the-line : En fallstudie av små företags tillämpning av marknadskommunikation med fokus på below-the-line metoder

This study aims to research how small companies that operate on the Swedish home electronic-market utilize marketing communications to communicate their message. The focus of this study has been to research these companies use of below-the-line activities in their marketing communications. Interviews have been conducted with representatives from each of the three companies Neonode, Jens of Sweden and Tonium, that compose the selection from the population in this study. The use of below-the-line activities in small companies is mainly motivated by lower cost, which suit small company budgets. Below-the-line activities are also used for branding and the creation of credibility among the consumers when the target audience does not yet know the brand.

Sjuksköterskors kunskap om perifert inlagd central venkateter (PICC-line)

A peripherally inserted central catheter (PICC line) is a catheter that is inserted through a peripheral vein in the arm and then on to a central vein in the chest. It is used to give injections and infusions and to take blood samples of patients who need treatment for longer periods.The aim of this study was to investigate nurses' perceived knowledge of the care and use of PICC line in wards where PICC line does not occur daily. The aim was also to investigate if the nurses expressed a need and wished for more knowledge to be able to use PICC line, and if PICC line is not used investigate the cause of that.The study was of a descriptive design with quantitative approach. An online survey was answered by 40 nurses from five wards at a university hospital in central Sweden.A large number of the nurses who responded to the survey reported that they lacked knowledge of the care and use of PICC line. Despite this, three-quarters of the nurses usually use PICC line at the infusion / injection / blood tests on patients with PICC line, if they are cared for in their ward.

Radialtätning till Retarder

This thesis has the overall objective to develop the optimum sealing system between the retarder and transmission. Today, there is a pressure-relief and two radial seals separation between the retarder and transmission. It has been found that carbon residue formation may occur between retarder axle and seal lips with, in some cases, leakage as a result.We have in this thesis tried to explain the phenomenon of carbon residue, how it is formed and why it can be seen just on the seals? A rig test was conducted where we show how friction, speed, transmission temperature and mitigation phases of the retarder affects temperatures in the sealing environment. Factors affecting the coke structure are reported, together with proposals for measures that provide a mitigating seal environment.

Verktyg för värdering av miljöpåverkan vid investeringar i det svenska elstamnätet

During the period 2009-2013, investments in the Swedish national grid increase by a factor of ten compared to previous years. In order to fulfil their mission to manage the national grid in a safe, efficient and environmentally sound way, Svenska Kraftnät (Swedish National Grid) needs to take all these perspectives into account while planning new investments. To compare and relate perspectives of technology, economy and environment the same yard stick must be used. That yard stick is commonly money. A problem arises however as environmental issues are difficult to price.The purpose of this master?s degree project was to develop a tool for evaluation of environmental impact related to investments in the Swedish national grid.

Överföring av digital video via FireWire

Transmission of digital signals is today more frequently used than transmission of analog signals. One reason for this is that a digital signal is less sensitive to noise than an analog, another reason is that almost all signals today are handled in a digital format. This thesis describes the development of a system that receives digital video signals through FireWire. The standard for FireWire, which is a high performance serial bus, is under development. Today the standard of the bus supports transmission of data with a speed of up to 400 Mbit/s.

Mikroföretags kommunikationshantering, off- och on-line, på
konsumentmarknaden: en fallstudie på två företag

The purpose of this thesis was to highlight how different aspects of market communication are used when micro companies choose to use both Internet and store selling activities towards the consumer market. The thesis dealt with off-line and on-line communication considerations with focus on advertising, interactions, and relations. In order to achieve this purpose a case study was conducted, that revealed that the companies acted according to theories. The conclusions drawn from the thesis were that companies tended to rely on traditional ways of dealing with advertising and interaction. We could also see that relations were created as a result of unconscious behavior and that the Internet activities still were on a basic level..

Personalen i frontlinjen som varumärkesbärare : En studie inom träningsanläggningar

The purpose of this research aims investigate whether front line personell are brand carriers who can affect the customers brand experience. This present study focuses on commercial fitness centers in Kalmar. Like brands, training is taking part in people?s everyday lives; fitness centers are offering the customer a wider range of group training.This thesis is based on a qualitative approach whereby eight interviews have been carried out with two members of the board and six employees of the front line. Additionally, this thesis is also based on three focus groups with four customers, representing the majority of each fitness centers.The research findings highlight that the front line employees are very important as they are seen as the brand; therefore the front line employee?s personality and behaviour will influence the customer?s view of the brand.

"Delaktighet är engagemang" : En kvalitativ studie om upplevelsen av delaktighet hos mellanchefer inom hemtjänst  

The aim of this qualitative study is to examine the experience of participation among first line managers within community home care. The study is based on eight interviews with first line managers operating in a metropolitan area in Sweden. A majority of the interviewees worked in private companies.We have used two theories to interpret our empiri: Lean Production and Human Resource Management. The analysis resulted in seven themes: economy, leadership, participation, view on the organization, first line manager, private or municipally operated organization and expectations on the manager. Our results showed that all the interviewees experienced that they were participant in the organization.

Trenders påvekan på Line Extension - En fallstudie av Skånemejerier

The purpose of this study is to look at the line extensions of the Swedish dairy company Skånemejerier. We have chosen to focus on how trends in ecological products and Functional Food influence the line extensions. The competition in the food sector have made it harder for companies to be seen in the market area and the companies have to make their brands more visible. That is one of the reasons why companies work with line extensions. The study is based on a qualitative approach because we wanted to come closer to our subject in order to establish a greater understanding for the case itself.

"Att göra saker rätt" : -En studie av gräsrotsbyråkraters handlingsutrymme

AbstractEssay in political science, C-level, by Line Säll, spring semester 2007.Tutor: Susan Marton.?To do things by the rule of law -A study in the discretion of front-line bureaucrats?This essay has it´s starting-point in the theoretical problem of social science to unite democracy and bureaucracy. The purpose is to illustrate the problems with the discretion of front-line bureaucrats in a democratic state. The theoretical approach is front-line bureaucracy-theory. Certain characteristics of the work of street-level bureaucrats makes it impossible to severly reduce discretion.

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.

International transmission of stock market movements - a Scandinavian focus -

Previous research has found an increased transmission of stock movements in Europe, partly caused by the establishment of institutions as the EU and the EMU. The purpose of this paper is to find the possible impact from the EU and the EMU concerning the evolution of international transmission of stock market movements, on four Scandinavian markets, Denmark, Finland, Norway and Sweden. The research is based on primary data, existing theories and earlier studies regarding international transmission of stock market movements. The examined method is a VAR (Vector autoregressive model) including a 10x1 vector of variables. Furthermore the tests considered are correlation, granger-causality, variance decomposition and impulse response.

Att implementra integration En diskussion kring integrationsbegrepp och integrationspolitik med frontlinjebyråkrater som utgångspunkt

The aim of this study is to discuss the implementation of Swedish integration policy from the perspective that public officials, so called front-line bureaucrats, are the real creators of this policy. The concept of integration is far from unambigous; it can have different meanings depending on the theoretical perspective applied. This give topical interest to the question of how the concept is conceived on the national level versus the implementation level. I also aim to uncover how these front-line bureaucrats look upon their role as creators of integration policy. My material consists mainly of interviews with front-line bureauctrats.

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