This master thesis has been done at Enea Epact AB. The purpose of this thesis is to develop and implement a Link Quality Control algorithm for GPRS/EPGRS in the current testing tool. A Link Quality Control (LQC) shall take quality values from mobile stations and base stations and decide a Codingsscheme that opimizes the throughput of data. The Advantage with LQC is that it adapts the used Coding scheme to the channel quality. If the channel quality is too bad for the used Coding scheme, a slower Coding scheme with more redundancy should be selected.

At Saab Aerosystems, situated in Linköping Sweden, there is a presentation and manoeuvre simulator simulating the fighter jet JAS-39 Gripen. This flight simulator is called PMSIM. In this thesis we study how to transfer sensor images generated by PMSIM to other simulators or desktop computers. The transmission is band-limited so some kind of image Coding must be used. Because of this the greater part of this thesis is concerned with image Coding.

n this dissertation a comparison of two evolutionary methods for evolving ANNs for robot control is made. The methods compared are SANE with enforced sub-population and delta-Coding, and marker-based enCoding. In an attempt to speed up evolution, marker-based enCoding is extended with delta-Coding. The task selected for comparison is the hunter-prey task. This task requires the robot controller to posess some form of memory as the prey can move out of sensor range.

Bacteria are exposed to evolutionary pressure to an extent unlike other organisms. This leads to a high degree of adaptation to its surrounding. This thesis investigates the degree of adaptation towards higher accuracy in the transcription of DNA to RNA in Coding sequences in the DNA of the E. coli bacteria. Two Coding sequences with different nucleotide contents were investigated.

This thesis explores the possibilities of avoiding the issues generally associated with compression of noisy imagery, through the usage of vector quantization. By utilizing the learning aspects of vector quantization, image processing operations such as noise reduction could be implemented in a straightforward way. Several techniques are presented and evaluated. A direct comparison shows that for noisy imagery, vector quantization, in spite of it's simplicity, has clear advantages over MPEG-4 enCoding..

This thesis discusses the possibilities to distribute digital video in a military vehicle. Today, an analogue system is used, which has a maximum capacity of eighteen video sources and the same number of monitors. The purpose of this thesis is to increase the systems capabilities regarding secure distribution and additional functions. Both software and hardware tests are made to investigate the features of the digital video standard MPEG-2. Both the Coding delay and the image quality are of great interest.

Syftet med studein är att studera Coding Technologies och hur det som litet företag har etablerat en högteknologisk standard på en marknad dominerad av stora aktörer. Resultatet av detta ska vara att identifiera viktiga faktorer och visa på strategier ett litet företag kan använda i denna situation. Studien är genomförd i form av en fallstudie med djupintervjuer där den teoretiska referensramen arbetats fram utifrån empirin. Uppsatsen behandlar de teoriområden som förknippas med standardsättande. Områden som nätverksmarknader, nätverk och patentproblematik.

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.

Promoters are genetic elements that facilitate the transcription of a gene and they have been found in front of non-Coding RNA (ncRNA) genes in different organ-isms, e.g. the model plant Arabidopsis thaliana. A similar element, DUSE, has been found in front of ncRNAs in the social amoeba Dictyostelium discoideum and a part of this project has been to analyze the function of this putative promoter element through cloning and expression studies. A construct to analyze the func-tion of DUSE was successfully designed and introduced into D. discoideum but full expression studies were not finished because of shortage of time.

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.

Ångest är ett relativt vanligt förekommande psykiatriskt problem hos skolbarn, framförallt flickor. Obehandlad kan den fungera som brygga till annan psykopatologi. I barndomen fungerar föräldrar som viktig bas för inlärning. Förälderns grad av omsorg och överbeskydd anses kunna bidra till utvecklande och vidmakthållande av ångest. Genom reciprocitet påverkar även barnet föräldrarna.

Rheumatoid arthritis is an autoimmune disease, where joints are attacked by the own immune system, leading to chronic inflammation and destruction of bone and cartilage. Inflammation is a complex process, controlled by many different substances. One of them is adenosine, which has anti-inflammatory properties. In this project, three polymorphisms in different genes, involved in synthesis and signaling of adenosine, were genotyped for 188 patients with RA and 362 controls without RA. The results shows that for the polymorphism in A2a, a gene Coding for an adenosine receptor, there was no significant difference in genotype distribution between the groups.

Alternative splicing is a process that partly rejects the common definition of a gene ? that one gene codes for one specific protein. By variable combination of Coding regions (exons) and exclusion of non-Coding regions (introns), formation of several different mRNA-transcripts, and consequently several different proteins, can derive from the same gene. Alternative splicing is an important condition for the development of complex life forms, but it is also a highly sensitive process and inaccurate splicing is the cause of approximately 15 % of mutations that cause genetic diseases. This article presents four genes, BRCA1, BRCA2, ER? and ER?, and inaccurate splicing of these genes increases the risk of developing cancer, particularly breast cancer and ovarian cancer.

This report describes how we made a dynamic website combined with staticalweb pages and a web shop for the Swedish company Tyger & Ting.The employer Tyger & Ting wish to run a working web shop on their site butthey want to keep their old system of updating pages with their old applicationfrom Intellyweb1, which creates statical HTML pages.The goal of this exam paper has been to learn to create a functional web shopwith user friendly layout and appealing design and also to take orders andfulfill wishes from a real employer.The report is describing how Intellyweb?s application and its statical web pageshas been implemented on a dynamic web page. The report does also describehow this site has been build and how the problems with the Coding have beensolved. The Coding has been made with HTML, PHP and MySQL. CSS hasalso been used.

Promoters are genetic elements that facilitate the transcription of a gene and they have been found in front of non-Coding RNA (ncRNA) genes in different organ-isms, e.g. the model plant Arabidopsis thaliana. A similar element, DUSE, has been found in front of ncRNAs in the social amoeba Dictyostelium discoideum and a part of this project has been to analyze the function of this putative promoter element through cloning and expression studies. A construct to analyze the func-tion of DUSE was successfully designed and introduced into D. discoideum but full expression studies were not finished because of shortage of time.