This thesis is part of a larger study of the advantages of using colored Petri nets as a modeling language for railway systems. The railroad layout serves as a specification layer, and basic railroad components are constructed ...

The World Wide Web is drowning with too much content. Stagnant websites, dead hyperlinks, inconsistent web-design and chaotic site-maps are all symptoms of a polluted Web where valuable content is hard to find. Web content ...

The heavy load and rich variety of data on the Internet has resulted in the need to gain an understanding of the characteristics of the traffic to better plan, develop, and implement new network devices, applications, and ...

This thesis explores ways to implement transformations from UML 2.0 to code in such a way that the generated code can be customized and extended in a compact and user-friendly way. As a solution to this problem I introduce ...

The amount of time critical data sent on the Internet is increasing. As a result, the networks are in danger of getting congested. When sending time critical data on congested networks, we risk that the data may get too ...

This thesis is based on an action research project in Tanzania where I, together with two other researchers have participated in the deployment of health information system. The project was initiated in Tanzania on an ...

The goal of this project was to implement and evaluate an automatic face recognition system. Face localization was adapted from the algorithm of Rowley et.al. A 20*20 pixel sliding window scans a pyramid of the input ...

Fault-tolerant routing has been a hot topic in the academic community for quite some time now, and several different approaches have been suggested. In the interconnect industry however, fault-tolerant routing has not been ...

A MANET Mobile Ad Hoc Nettverk, is a network consisting of mobile nodes, usually comunicating through radio links. In a MANET it may be that data have to take the path through one or more nodes to reach its destination. Today ...

Voice over IP, short VoIP, is among the fastest growing broadband technologies in the private and commercial sector. Compared to the Plain Old Telephone System (POTS), Internet telephony has reduced availability, measured ...

STAIRS is an approach to the compositional development of sequence diagrams supporting the specification of mandatory as well as potential behavior. In order to express the necessary distinction between black-box and ...

In this master thesis we have investigated how to develop a web application by using free and open source tools, and how to design for flexibility in regards to software change and platform-independency. By incorporating ...

The end-user development (EUD) community has identified the need for new technologies that support the end user in the development and modification processes of applications. This thesis suggests the use of design environments ...

Denne masteroppgaven undersøker hvilke elementer som kan motivere barn til å bruke et informasjonssystem. Feltarbeidet til denne oppgaven ble gjennomført ved Senter for Pasientmedvirkning og Sykepleieforskning (SPS) ved ...

The purpose of this thesis has been to test the Support Vector Machine (SVM) based classifier on hyperspectral data by using quadratic optimizing theory. This has been done by solving the quadratic program C-SVM by using ...

Starting with a problem in wireless telecommunication, we are led to study the multiple knapsack problem with assignment restrictions. This problem is NP-hard. We consider special cases and their computational complexity. ...

The festschrift contains contributions from the following authors: Bergljot Behrens, Reinhard Blutner, Pål Kristian Eriksen, Cathrine Fabricius-Hansen, Jens Erik Fenstad, Atle Grønn, Janne Bondi Johannessen, Sveta Krasikova, ...

På starten av 1970-tallet var store deler av forskningsområdet innen kunstlig intelligens preget av avgrensede problemstillinger i forenklede verdener. Ideen var at dersom det fantes en god løsning på et problem i en ...

Sammendrag Denne oppgaven tar opp problematikken med å streame lyd og video over det mobile tredjegenerasjonsnettverket, UMTS, til en mobiltelefon. Det legges vekt på de egenskapene ved UMTS og mobiltelefonen som er med ...

PRP, Parallel Recursive Procedures, is a high level system for coding parallel programs. Basically, it allows the user to take a sequential program using recursion, and be able to run in on several computers. The system ...

This thesis is based on my participation in the Health Information System Programme (HISP). HISP is an action research project, and is working on development of an open source health information system (DHIS-2), as well ...

Sammendrag Dette er en lang masteroppgave skrevet ved Institutt for Informatikk på Universitetet i Oslo. Oppgaven omhandler fotobransjen og den omstillingsprosessen bransjen har måttet gå igjennom i overgangen fra filmbasert ...

Mobile Ad hoc Networks (MANETs) are wireless networks with no predetermined infrastructure, containing nodes that can form arbitrary topologies. Nodes cooperate to forward packets for each other, functioning both as routers ...

This report presents the techniques used to enable use of Web Feature Service Transactions (WFS-T) from mobile phones. By using these techniques some important aspects for the next generation of mobile phones are proved. Web ...

This thesis is based on an action research project where I have participated in the establishment of an open distributed development network, and the development of the open source health information system District Health ...

In the not so distant future, androids may be a part of our everyday lifestyle. There can be a desire not only to make these androids do our work, but also to enable communication with humans in a natural way. As a substantial ...

This thesis focuses on IEEE 802.11e Enhanced Distribution Channel Access (EDCA). IEEE 802.11e was standardized in July 2005, and there are already numerous papers about 802.11e and its applications. Even so, there are still ...

The main focus of the thesis is two different approaches for establishing wireless communication, by means of electromagnetic fields, between an implanted glucose sensor and an external device in a glucose monitoring system ...

Microsatellites are widely used genetic markers. Although there will often be missing values in a set of microsatellite data, little work has been done to find a good method to estimate these missing values. K-Nearest ...

With background in the proliferation of Information- and Communication Technologies(ICTs) in educational institutions, there is a growing interest in deploying ICT that complies with specifications and standards for learning ...

In our daily life, large amounts of personal data are collected, stored and processed in enterprise systems. This is often done without our knowledge. The protection of these personal data has become a matter of concern ...

This thesis investigates fault tolerance mechanisms for systems that make use of mobile agents. The context for this research has been the use of agent systems in the purchase, sale and dynamic pricing of air tickets. ...

Future ad hoc networks will probably see an increasing demand to be able to communicate with external networks. There has already been done research on connecting ad hoc networks with other networks, like the Internet. ...

This research project explores a new approach to online community building and community health promotion. It is based on the concept of salutogenesis. Salutogenesis is a proactive approach to community health promotion ...

Abstract This document is about the candidate's Master thesis concerning a handheld medical Decision Support System (DSS) for early diagnosis of heart attack. The purpose of such a DSS is to provide faster identification ...

We study two simple multiresoultion analyses and their stability in the L1-norm: Faber decomposition and C1 quadratic Hermite interpolation, both with nonuniform knot sequences. The use of the L1 norm is natural in many ...

Every IT project is executed with set of deliverables and has an expected closure time. Within this closure period, there is a predetermined set of tasks and activities to complete the project successfully. These tasks ...

Digitale, interaktive kunst (DIK) installasjoner består ofte av både live og opptak av lyd og bilde i presentasjonen av ikke-lineære, narrative utrykk. Design og implementering av programvare som støtter den nødvendige ...

Abstract This project is about epidemics spreading in computer networks and the issue of node centrality. The aim of such analysis is to investigate the rate of infection and information spreading in the network, to find ...

Hver dag skjer det ulykker av forskjellige slag. Når en ulykke har skjedd, involveres ulike typer personell i redningsarbeidet. Personellet kan være fra flere forskjellige organisatoriske enheter, som brannvesen, politi ...

The research presented in this thesis identifies the comprehension strategies used by professional programmers with different expertise during maintenance tasks on a previously unknown application in Java. Furthermore the ...

Mobile ad-hoc networks (MANET) are stand alone, wireless networks where nodes can move arbitrary in the network topology and where multi-hop is feasible. MANET has a big potential but the challenges in realizing that ...

This is a master thesis at the Institute of Informatics, University of Oslo. Duration is 30 study points. This thesis is about privacy aspects in relation to usability of internet based search engines. The problem area ...

This thesis presents a free-variable sequent calculi for the modal logics K45, S5 and the logic of Only Knowing. Labels act as placeholders for points in models, using label variables to postpone the choice of point ...

Tradisjonelt brukes relasjonsmodellen som teoretisk rammeverk for studier av databaser. Et alternativ er å modellere databasene i 1. ordens logikk, og i en slik modell kan man se på fakta som aksiomer (``antatte sannheter''), ...

The trends over the recent years show an increase in streaming media transported across the Internet in addition to al- ready abundant web traffic, increasing the need for distri- bution schemes that efficiently handle ...

We propose a semantic paradigm for component-based specification supporting the documentation of security risk behaviour. By security risk, we mean behaviour that constitutes a risk with regard to ICT security aspects, ...

In this paper, elements of network simulations are identified and defined to provide a clear terminology for discourse on network simulators. Then we identify the two stakeholders involved in conducting network simulation ...

Background Measles remains a major public health problem in Mozambique despite significant efforts to control the disease. Currently, health authorities base their outbreak control on data from the routine ...

Background A better understanding of the development of metastatic disease and the identification of molecular markers for cancer spread would be useful for the design of improved treatment strategies. ...

Background Complex traits, which are under the influence of multiple and possibly interacting genes, have become a subject of new statistical methodological research. One of the greatest challenges facing ...

This thesis describes a project which goal was to develop a programming contest system. The programming contest system was designed to be robust, easy to install and maintain, and easy to use. A web-based system has been ...

En utfordring med å lage IT-systemer er å lage dem slik at de blir best mulig tilpasset til hvordan virksomheten fungerer. Hvordan virksomheten fungerer beskrives gjennom dens forretningsprosesser, organisasjonsstruktur, ...

Sammendrag I 2001 introduserte Universitet i Oslo bruken av Learning Management Systems i undervisningen. Systemet som ble tatt i bruk ved Universitet i Oslo heter ClassFronter og er levert av Fronter A/S. Innføringen av ...

This thesis presents a system for adapting the bandwidth of a Delta-Sigma DAC based on the spectral contents of the input signal. By dynamically adjusting the bandwidth of the converter based on the transitory requirements ...

Video streams in general do not adapt to changes in the network environment, causing image quality to suffer. Graceful video scaling requires fine granular adaption, and scalable video codecs like SPEG and MPEG-4 FGS provide ...

Stadig nye krav fra organisasjoner sammen med fremveksten av Internett, har økt betydningen av teknologier som kan integrere flere heterogene datasystemer. Denne oppgaven fokuserer på integrasjon av datasystemer, og gjør ...

oppgaven ser på lineariserings teknikker for å korrigere for statisk ulinearitet i LC-VCO benyttet i FDSM sammenheng. Først litt teori, så simuleringer i Matlab og til slutt en hardware implementasjon av den foreslåtte ...

Denne oppgaven ser på bruken av elektronisk ID i statlige etater i Norge i dag. Det ses spesielt på om bruken av tekologien PKI er en god løsning på etatenes behov på dette området. Som utgangspunkt for analysen er det ...

The demand for reduced area and power consumption have usually been met with improvements in processing techniques, allowing for increased integration and a reduction in the power supply voltage. Some technology improvements ...

Multiple-valued logic is an alternative to traditional binary logic, where the the two states, either on or off, is replaced by several logical values. One promising way of realizing multiple-valued circuits is by using ...

This thesis constitutes the research report submitted as part of my candidatus scientarium program at the Department of Informatics, University of Oslo. In this work, two proposals for the Simula language are discussed and ...

PyPkg is a unified system for distribution and deployment of software, with an initial focus on Linux. It is intended to enable a "direct link" between the provider and user, where dedicated deployment tools obtain software ...

An underlying assumption for this thesis is that quantitative assessment of the ability of a software project to perform software changes can be a valuable complement to qualitative methods for evaluating and improving ...

Oppgaven tar for seg LC-VCO (voltage controlled oscillator) og dens frekvens tuning ved hjelp av en varactor(variabel reactor) i dette tilfellet en variabel kapasitanse og hva slags potensialle denne LC-VCO'en har i en ...

Since early times people have depended on each other for knowledge. This is how we evolve and it is our way of life. We think, we ask questions in attempts to learn and we teach our children to walk. We all do this naturally. ...

The Ad Hoc Routing Protocol with Cellular Assistance is intended to be used for high-bandwidth streaming on a heterogeneous 3G-cellular and Ad Hoc IEEE 802.11 network architecture. This report describes the protocol in ...

MANET has been a widely discussed network type in the last decade, and there have been many proposals for MANET routing protocols. This thesis studies and compares several proposals and focuses mainly on the proposals of ...

This thesis is a part of the knowledge module in the Ad-Hoc InfoWare project at the University of Oslo. The goal of the project is to enable information sharing between rescue personnel at an emergency scenario by the use ...

Dette er en kort masteroppgave som handler om fenomenet brukergenerert innhold, noe som er et svært aktuelt tema. Brukere skriver blogger, publiserer filmer av seg selv, skriver og redigerer i wikier, deler bildene sinemed ...

Det har blitt mye mer vanlig at vi sender store strømmer med data over Internet. Dette kan være fordi slutt-brukerene har fått raskere linje.. Store strømmer med data til mange forskjellige klienter fører til nye utfordringer. ...

Carlsberg Breweries besluttet i 2003 å innføre SAP som standardisert virksomhetssystem (ERP system) i datterselskapet Ringnes AS. Implementeringen av SAP var et ledd i et prosjekt kalt Northern Light , der formålet var å ...

Synthetic aperture sonar (SAS) interferometry is a powerful tool for generating high resolution bathymetric maps. The basic principle of interferometry is to relate the time-delay between echoes received by two displaced sensors ...

Nondeterminism in specifications may be used for at least two different purposes. One is to express underspecification, which means that the specifier for the same environment behavior allows several alternative behaviors ...

In conventional computer language parsing, languages are traditionally expressed in formal grammars and parsed with LR(k) or LL(k) algorithms. However, the size, complexity and ambiguities of natural language processing ...

This master thesis addresses issues concerning the user experience of playing computer games. It focuses on direct manipulation and hyper structure to see how these two interaction paradigms are utilized in computer games ...

This thesis has two main aims, investigated in three research questions. The first aim is to investigate first how hospital professionals, like secretaries’, nurses’, and doctors’, knowledges is accomplished, used and ...

Denne hovedoppgaven tar for seg et eksperiment med et trådløst nettverk. Selve eksperimentet tar for seg hvor mye et trådløst nettverk blir påvirket av værforhold utendørs. Nettverket består av to målemaskiner koblet opp ...

For å få en mer effektiv betjening av reisende, innførte Flytoget AS i mai 2003 sitt system for billettløse reiser. Dette innebærer at reisende ikke lenger må kjøpe papirbillett, men kan reise elektronisk ved å bruke et ...

Bruken av informasjons- og kommunikasjonsteknologi (IKT) står sentralt for læring og utvikling i skolen i dag. Stadig flere arbeidsplasser har behov for arbeidstagere som behersker IKT, og det er derfor viktig at skolen ...

This thesis discusses how a UML2 state machine editor can be integrated with a number of components, including Eclipse. The background for the thesis has been the development and integration of SMach, a UML2 state machine ...

Distributed systems are becoming increasingly important. In order to facilitate the development of distributed systems, new high-level abstractions and programming languages may be convenient. Creol is an experimental ...

Modern software systems have become increasingly complex and they are used to perform vital functions in todays society. It is therefore crucial that software systems are as free of errors as possible. A software system ...

Dette er et kort sammendrag av rapporten som er blitt produsert i forbindelse med min masteroppgave som ble utført ved Byggforsk AS. Hovedfokus for denne oppgaven har vært rettet mot prosjektering av bygg i forbindelse ...

This master thesis focuses on the use of corporate blogs in Norwegian organizations. A review of existing literature and research in the field of blogging and corporate blogging has been done, and the advantages/disadvantages ...

Dette er en masteroppgave på 30 studiepoeng skrevet ved institutt for informatikk ved Universitetet i Oslo. Oppgaven har sett nærmere på hvordan koblinger mellom virtuelle og fysiske rom kan fungere som et ledd i å forbedre ...

On a DNA sequence, we attach information about its features and attributes, and this kind of information is called annotations. Over the past few years there has been a development to gather and group annotations to a ...

A DVI file is the standard output of the TeX typesetting system. My thesis explores the possibility of creating a complete DVI file previewer on the Java platform. I have taken a close look at the various issues that had ...

Denne studien fokuserer på brukeraksept av ny teknologi. Helsesektoren fornyer kontinuerlig sine IT-systemer og beslutninger om dette gjøres sentralt. Samtidig har mobil IT begynt å gjøre inntog også i helsesektoren. I ...

Much effort has been used on the problem of blind source separation (BSS). The problem is the one of separating audio sources present in a room, using a set of differently placed microphones capturing the auditory scene. ...

Sammendrag av masteroppgaven: ”Sammenligning av generiske mekanismer i Java og C#” I oppgaven sammenlignet jeg de nye generiske mekanismene i Java og C#. Jeg så på: 1. Uttrykkskraft 2. Lesbarhet 3. Integrasjon 4. ...

UML and UML-based development methods have become a de facto standards in the industry when modelling object-oriented systems. Mostly the literature covers examples on developing relatively small systems, but it is believable ...

Most networks are inherently prone to failures, and failures do occur on a regular basis. New real-time services, relying on continuous connectivity, are regularly introduced on the Internet - requiring new demands to be ...

This thesis claim that XSL Transformations combined with extensions can be used to process geodata encoded as GML. The assertion is backed up by the following deliverables: • A working proof-of-concept for an XSLT based ...

Current wireless networks only allow users a limited freedom of mobility. This follows from the observation that these networks typically rely on existing infrastructure such as access points. To overcome this restriction, ...