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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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, ...

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 ...

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, ...

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 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 ...

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. ...

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, ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

Real-Time Maude extends the rewriting logic-based Maude tool to support formal specification, simulation, and further formal analysis of real-time systems. The specification language of Real-Time Maude emphasizes expressiveness ...

Due to the bandwidth constraint and the dynamic topology of Mobile Ad Hoc networks (MANET), supporting QoS service is very challenging .Among various approaches proposed so far, Stateless Wireless Ad hoc Network (SWAN) ...

This thesis lies within the field of Information Systems and Human-Computer Interaction with a particular focus on user acceptance of tickets in relation with football games. The goal of this thesis is to study user ...

Multicast is a way of grouping receivers and optimizing bandwidth utilization. Introducing multicast in Mobile Ad Hoc Networks (MANETs) appears more challenging than providing multicast services in the fixed Internet, since ...

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 ...

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 ...

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 ...

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 ...

Ad hoc networks have attracted a lot of attention due to their decentralized architecture and potential mobility. The volatile links that are inherent to these networks have generated a need for a cross-layering interface ...

With the Session Initiation Protocol (SIP), it is possible to have telephony on IP network that is originally intended only for computer communication and not communication between human being. The convergence dream is ...

Programmer som benyttes i våre dagligdagse gjøremål tilbyr en overflod av funksjonalitet, og resulterer i komplekse grensesnitt. Et fenomen kjent som bloatware og creeping featurism. Adaptive og tilpassbare grensesnitt er ...

This thesis addresses some of the key aspects of reducing both static and dynamic power consumption in digital circuits, by operating the circuits in the subthreshold region, and at the same time retaining acceptable levels ...

Verbal probability expressions convey both a more or less precise numerical meaning, and they have a positive or negative directionality. Positive phrases, such as possible and likely , focus on the occurrence of ...

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 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 ...

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 ...

According to Darwin every species on this planet have developed froma small group of simple molecules into all the modern species living among us today. The reason why some species survive and others don’t is what Darwin ...

Sammendrag Denne oppgaven dreier seg om hvordan innføringen av et informasjonssystem kan føre til konsekvenser i forhold til endring av læringsprosesser, kunnskapsdeling, arbeid og arbeidsrutiner i en organisasjon. Oppgaven ...

In the recent years the focus and interest for wireless networks has been increasing. However, it is the security mechanisms (or lack of so) that has caught most people's attention. This is mostly well-deserved criticism ...

Concurrent programming using threads is considered a hard and error-prone task. Coroutines are conceptually simpler, they are easier to program with due to their sequential nature. Flexible coroutines as presented by Belsnes ...

Denne masteroppgaven går ut på å finne ut hva som karakteriserer hackere og crackere. Oppgaven tar opp temaer som begrepsdefinering, motivasjoner, moral, metoder, organisering og informasjonsflyt. For å finne ut av dette ...

A new type of network is coming into use, Mobile ad-hoc Networks (MANETs), these networks are dynamically constructed out of wireless nodes. Designing routing protocols for these networks presents several challenges and ...

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 ...

Traditionally, availability has been seen as an atomic property asserting the average time a system is "up" or "down". In order to model and analyse the availability of computerised systems in a world where the dependency ...

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 ...

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. ...

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 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 ...

Successful segmentation of the endocardial boundary of the left ventricle (LV) is an important field of study, as it opens the possibility for automatic quantitative measurements of the cardiac function. The objective of ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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 ...

During the last decade a few countries like India, Ireland, Israel and Malaysia have transformed the infrastructure of their economies to integrate IT infrastructures with a profound recognition of the importance of the ...

I denne verden som styres stadig mer av data og hvor vi alle bruker mye tid hver eneste dag foran PC-en, ville det vært veldig tidsbesparende hvis vi kunne brukt PC for å finne ut ønskede informasjon på lettest mulig måte ...

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 ...

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 ...

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 ...

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 ...

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 ...

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, ...

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 ...

For å få en mer effektiv pasientbehandling ved norske sykehus er innføring av den elektroniske pasientjournalen ett av flere virkemidler. Brukermedvirkning i denne type organisasjoner har vist seg å være utfordrende. Denne ...

Vi tar i denne oppgaven for oss problemet med maskinell vurdering av likheten mellom forskjellige javakodefiler med sikte på å utvikle en algoritme for effektiv sammenligning av innleverte obligatoriske oppgaver i Java. ...

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. ...

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 ...

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 ...