Integrasjon av datatyper og funksjoner i Creol. Implementasjon av generelle datatyper og brukerdefinerte funksjoner som tidligere måtte håndkodes i interpreten. Dette omfatter også subtyper og brukerdefinerte datatyper. I ...

Rindex (a short for RAM Index) is designed as a platform to be used top of a traditional database management system (DBMS). The main focus for this project has been on how to maximize the usage of the available main memory ...

How to enable enterprises to interchange autonomously designed information addressing the same domain, is an active research area. Present technology allows enterprises to exchange data, but when it comes to interpreting ...

In UML, the operator neg is used to specify negative, or unwanted, system behaviour. We agree that being able to specify negative behaviour is important. However, the UML neg is currently not wellsuited for this purpose, ...

Today’s computer networks have gone from typically being a small local area network, to wide area networks, where users and servers are interconnected with each other from all over the world. This development has gradually ...

Oppgaven ”Unntakshåndtering i modellering og programmering” tar for seg utfordringen med å lage mekanismer for unntakshåndtering i UML 2 sine sekvensdiagrammer. Unntakshåndtering i sekvensdiagrammer er så langt ikke del ...

Abstract This is a master thesis from a collaboration between Oslo University College and Uninett Research. Uninett have a passive monitoring device on a 2.5 Gbps backbone link between Trondheim and Narvik. They uses ...

Abstract This master thesis presents the effect that security has on a sensor network. A wireless sensor network is composed of a magnitude of sensors that together form a sensor network through self- organizing and self- ...

Generic Packages with Expandable Classes is a statically type safe programming mechanism which combines type parameterisation on the package level with class expansion. The former makes the mechanism useful for solving ...

By making use of a distributed file system, users of physically distributed computers are allowed to share data and storage resources. This paper compares three distributed filesystems: the Sun NFS filesystem, Samba and ...

Multi-protocol label switching (MPLS) integrates the label swapping forwarding paradigm with network layer routing. To deliver reliable service, MPLS requires a set of procedures to provide protection of the traffic carried ...

This document is my master thesis at the Institute of Informatics, University of Oslo. This is a multiple case study where the focus is estimating web based software projects. For consultants in the software industry, the ...

This thesis is based on an action research project where I have participated in the development of internationalisation support to a computerised health information system. The project is a Vietnamese-Norwegian collaboration ...

This research falls under the domain of information systems development in developing countries. The context of the research is Zanzibar, Tanzania. The main objective of this research was to study the existing HIS, identify ...

The thesis is about different approaches to model driven development. Much of the IT industries history can be summarized as a quest for faster and better methods for system development. This thesis has taken a closer look ...

This thesis is about software development practices, including the project management aspects, in the context of global software outsourcing. It was focused on the issues of achieving quality product namely here: software. ...

This thesis describes the design and implementation of JavaSplitter, a prototype incremental proof search engine based on a variable splitting sequent calculus. The prover also includes modes for variable pure derivations, ...

Ruby er et nytt og godt alternativ innenfor de skriptespråkene som finnes i dag og har nylig blitt tatt i bruk i den vestlige delen av verden. I denne oppgaven ser jeg i hovedsak på et Ruby-grensesnitt til Diffpack og på ...

This paper discusses how a PHP development toolbox can be implemented. One toolbox has been implemented, and the implementation is described and documented in the text. The toolbox is primarily meant to help students who ...

For a long time IT-system maintenance has been reckoned as the largest expense attached to the IT-department, but there has been relatively little research on this subject. This investigation looks at IT-system maintenance ...

This thesis describes the foundation for developing a tool that compares Java programs, or different versions of a program. The tool captures syntactic differences and contextual semantic differences as well. Syntactic ...

The aim of this thesis is the specification and development of a new UML virtual machine – UMLexe- capable of executing platform independent system specifications. For executing models, computational completeness is ...

For many reasons, large and small installations of computers can benefit from Automated Configuration Management tools. All the processes from installation, configuration, to maintenance and updating the computers can ...

In this thesis we revisit a handful of well-known experiments, using modern tools, to see if results yielded from earlier experiments are valid for today's heterogeneous networks. The traffic properties we look at are ...

In this thesis we propose a model-based approach to support data integration between heterogeneous enterprise systems. It reviews literature about interoperability, and presents several aspects of data integration problems. ...

Many of today's critical systems offers services that depend upon the correct behaviour of one single physical unit. An attacker able to gain control over one component by exploiting a vulnerability its software, only needs ...

In today's modern society, the increasing demands for connectivity and accessibility place computers in ever larger internetworks. As more and more computers become globally accessible, the number of threats from random ...

This thesis was written as a part of a master degree at the University of Oslo. The thesis work was conducted at SINTEF. The work has been carried out in the period November 2002 and April 2005. This thesis might be ...

In an given system on chip the different IP cores have different capacity needs for communications. Given a fixed communication capacity between two or more IP cores and more than one set of communicating cores with different ...

Multimedia-applikasjoner og andre applikasjoner med høy datagjennomstrømning setter strenge krav til ytelse og krever i mange tilfeller at man kan garantere et bestemt ytelsesnivå for de forskjellige delene av systemet ...

Python – Realizer is basically planned to become the original Python done in C++ and Qt class library. This to make it a brand new implemented Python interpreter with a new rapid application development application extending ...

Visualization of large quantities of structured data is difficult when the relationships are complex. Each information element can be linked to several others at the same time, so it is not possible to merely display ...

This study investigated the factors contributing to unsustainable health information systems and low level of use. Approaches to development and implementation of an integrated district-based health information system ...

The goal of this thesis was to develop an application facilitating patient monitoring by providing a roaming monitor that a physician can carry with him or her at any time. The thesis itself presents an overview of issues ...

Public health systems rely on many different components: the institutions of Ministry of Health; the health staff and the information and communication systems used by these organizations to collect, analyze and disseminate ...

Streamed multimedia is becoming common on the Internet as the bandwidths increase for end-users. To stream data with high bitrates to many concurrent users, servers are needed that can handle these extreme loads. Implementing ...

Honeynett er en forholdsvis ny teknologi som kan benyttes for å innhente informasjon om datainntrengere. Det kan innhentes informasjon om blant annet motiver, taktikk, verktøy og arbeidsmetoder. Denne teknologien er ikke ...

E-learning and intelligent tutorial systems are intended to provide a tailored training and instruction for each student. Computer-based learning is supposed to provide the most possible individualized instruction at an ...

This master thesis is a culmination of two experiments performed with children. The children got to play with Lego Mindstorms, build and program their custom made Lego robots. The first of the experiments was performed ...

I denne oppgaven har man valgt å se på sikkerhetsløsninger knyttet til skoleverket. Man har ønsket å se på i hvilken grad ulike aktører benytter IT-systemer, og hvilke sikkerhetsmekanismer som behøves. I skoleverket er ...

En måte å oppdage ukjente genmodifiseringer er å konstruere et mikroarray med et bestemt probesett. Probesettet er valgt ut ved biokombinatoriske reduksjoner som beskrevet av Nesvold (Nesvold et.al, 2005). Før den endelige ...

Denne oppgaven inngår som en del av Creol-prosjektet. Creol er et høy-nivå objekt-orientert modelleringsspråk for åpne distribuerte systemer. Språket er formelt definert med semantikk i omskrivningslogikk. I Creol tilbys ...

Automatisk identifisering av komplette genmodeller i eukaryotiske organismer er fortsatt en utfordrende oppgave (Zhang, 2002). Selv om det er konstante forbedringer i søkenøyaktigheten til gensøkingsprogrammer klarer de ...

A Personal Area Network consists of a number of personal and usually small devices that are carried by the user. These devices may be equipped with wireless communication interfaces, and can through these interfaces share ...

This thesis explores some of the possibilities web-technology offers for creating an interactive learning environment for bioinformatics on the web. A set of implemented examples on how some of the basic algorithms in ...

This thesis presents an analysis of the information infrastructure for distribution of music to mobile phones. The focus is kept on the users/ listeners throughout the thesis. This study is of importance as there are no ...

It is generally recognized that aggregated network traffic is self similar and that employment of traditional Poisson generators in network simulations may give misleading results when assessing performance. Many methods ...

Sammendrag Flernivålogikk er ikke så mye brukt i kommersielle systemer, på grunn av enkelte problemer med denne typen logikk. I denne oppgaven skal man lage et system ved hjelp av flernivålogikk. Flernivålogikk har enkelte ...

This thesis deals with the problems and solutions encountered during the development of PyMek. PyMek is a make-like tool for building software projects. PyMek uses XML-based buildfiles for project description, and MD5 ...

Abstract The research in this thesis focuses on the users of spreadsheet (Excel) and those who teach it. Several investigations have shown that user teaching and follow-up of users are important factors to achieve reasonable ...

Jeg har i denne oppgaven studert metoder for å utføre divisjon og kvadratrot av binære tall. Fokus for oppgaven har vært multiplikative divisjons- og kvadratrotalgoritmer basert på numerisk tilnærming av resiprokalet og ...

Risk handling of oil recovery projects has become more important as the biggest and least complicated oil fields have been exploited. As exploitation of smaller or more complex oil fields are not as obviously profitable, ...

The thesis is about implementing a generic mechanism, Generic Packages with Expandable Classes, in Java. The thesis desribes the syntax and the semantics for including the generic mechanism into the Java programming language. ...

The book industry in Norway consists of many different types of companies. We have the publisher who publishes the book, the Distribution Central who distributes the book from the publisher to the book store and the book ...

This thesis is drawn from an ongoing large-scale action research project Health Information Systems Program (HISP), which aims to develop sustainable computer based Health Information Systems (HIS) in and for developing ...

This research falls under the area of design and implementation of information systems in developing countries. I have studied the health information systems in Tanzania using case studies in Ilala Municipal, situated in ...

This thesis is a study in the field of quality of service (QoS) aware component-based middleware and separation of concerns. QoS enabled middleware tries to preserve the safe-deployment property of components. QoS is a ...

I dag blir datamaskiner kun brukt som avanserte skrivemaskiner hos bokforlagene. J.W. Cappelens Forlag ønsker å effektivisere prosessene et manus går igjennom fra det kommer fra forfatter til det skal sendes til trykk ved ...

In this thesis, we reexamine the long discussion on which model is suitable for studying Internet traffic: Poisson or Long-tailed Internet traffic. Poisson model, adapted from telephone network, has been used since the ...

When designing webpages for e – commerce it is benefitial to have the users in mind. Users act differently according to their previous experiences with the web. Trying to find out what kind of common denominators users of ...

This thesis investigates the challenges of scaling and standardizing Health Information Systems (HISs) in the context of developing countries. This investigation is based on case studies and action research interventions ...

The purpose of this thesis has been to calculate and implement the Arnold-Winther elasticity elements with strongly imposed symmetry. The next aim has been to investigate the research question: Will mixed finite element ...

Målet med denne oppgaven er å undersøke hvilken innvirkning en utvidelse av den tradisjonelle forståelsen av begrepet mobilitet til å omfatte ikke bare fysisk og tidsmessig kontekst, men også sosial kontekst, har på ...

Software development has reached a new step in the evolution of software developing tools and languages. From the beginning of software development there has been major changes in how software is developed. From the basic ...

Systems where data is collected using arrays of sensors will usually contain a beamformer. When the number of active channels in the sensor array is large, as it often is in imaging systems like sonar and medical ultrasound, ...

This thesis deals with end-user support, and the tools that are necessary in order to take full advantage of information from end-users. Information from end-users can be exploited to improve the support organisation, the ...

This thesis provides contributions to the research programming language Creol (Concurrent REflective Ob ject-oriented Language). The first contribution is the EBNF grammar for Creol. The second contribution suggests how to ...

Rewriting logic can be used to prototype systems for automated deduction. In this paper, we illustrate how this approach allows experiments with deduction strategies in a flexible and conceptually satisfying way. ...

Mobile ad-hoc networks (MANETs) provide the technical platform for efficient information sharing in emergency and rescue operations. Some the data present on the scene is highly confidential and requires protection. However, ...

Background Worldwide immunization coverage shows an increase in the past years but the validity of the official reports for measuring change over time has been questioned. Facing this problem, donor supported ...

Denne oppgaven tar for seg tillit til elektronisk valg, og hvorvidt det er mulig å lage elektroniske valgsystem som velgerne kan ha tillit til. For at en velger skal kunne ha tillit til et elektronisk valgsystem, må han ...

The thesis numerically investigates the stability and convergence properties of the Parareal algorithm when it is run on the unsteady Stokes equations. The Parareal algorithm offers a parallel-in-time scheme for solving ...

The Election Markup Language (EML) is a communication language used between and within different subsystems of a computerized electoral information system. EML is defined by means of a set of 33 XML Schemas. This thesis ...

Applikasjoner som bruker IP-nettverk setter statig større krav til QoS, mens dagens IP nett kun kan tilby en best effort ytelse. Samtidig blir trådløse nettverk mer og mer populært og benyttet i stadig større grad. IEEE ...

This thesis discusses two implementations of file access controls: the UNIX Permissions (UP) and the Access Control List (ACL). We will evaluate advantages and weaknesses in these two implementations. The criteria of ...

Forskningsarbeidet i denne oppgaven har vært rettet mot tilgjengelighet for blinde mennesker på internett. Vi har forsøkt å kartlegge hvilke hindringer blinde møter ved bruk av tjenester på internett. Vi gjorde et utvalg ...

De håndskrevne dagbøkene begynner å bli mindre og mindre populære nå som dagens teknologier klarer å gjøre det samme automatisk uten at vi trenger å tenke over det. Spesielt mobiltelefoner er blitt en av de største vinnerne ...

This thesis is based on my participation in a globally distributed development process of an Open Source Health Information System (DHIS-2). The DHIS-2 project is a collaboration between the countries of Norway, Vietnam, ...

This report concentrates on presenting the predicament of life cycle mismatch between components and the system – described as component obsolescence. The problem seem to be most prevalent for microelectronics, where many ...

Denne oppgaven ser på dataflyttings- og kontekstbytteoverhead i Linux ved nedlasting og streaming. Dataflytting er en kostbar operasjon, og mange mekanismer har blitt foreslått og implementert for å redusere dataflyttingsoverhead. ...

A well-known combinatorial optimization problem is the graph partitioning problem. Since solving it optimally requires very much time, we have to settle for approximated methods. One such method is the multilevel k-way ...

The Resource reSerVation Protocol (RSVP) is a signaling protocol used chiefly by Integrated Services (IntServ) to communicate Quality of Service reservations. While RSVP has a security architecture that was designed for ...

The eXplicit Control Protocol (XCP) was released as an RFC draft on October 17, 2004. In this paper we have looked into the theory behind the development of XCP. In addition, we created a working Linux implementation of ...

Abstract Classical Sampling methods play an important role in the current practice of Internet measurement. With today’s high speed networks, routers cannot manage to generate complete Netflow data for every packet. They ...

Summary This master thesis is a study of a specific process. When working with development of the security system for Øyafestivalen in Oslo, I wanted to improve the process and achieve a more structured process. To do this ...

Vi kombinerer to varianter av pi-kalkylen, asynkron pi-kalkyle og anvendt pi-kalkyle ("applied pi-calculus"), til en ny kalkyle: anvendt asynkron pi-kalkyle. Kalkylen modellerer asynkron kommunikasjon og tillater bruk ...

PRP for C# er en kort masteroppgave som har som mål å konvertere et eksisterende system, JavaPRP, til en ny plattform, .NET og C#. PRP er et system for å spre beregningen av en rekursiv metode til flere maskiner koblet ...

This is a summary of the cand. scient. thesis "En heterogen implementasjon av generiske pakker og ekspanderbare klasser i Java" (in English: "A heterogeneous implementation of generic packages and expandable classes in ...

This is a Master’s degree thesis from the Department of Informatics, University of Oslo, Norway. It is about the user’s experience of tickets in the transition from paper-based tickets to digital Radio Frequency Identification ...

The first mobile commerce services emerged on the Norwegian market in the late nineties and in constant growth. This paper looks at the status on mobile commerce and e-money in Norway today, which participants exists on ...

The thesis investigates how narrative techniques or a narrative form can support the design of political websites. The emphasis is on how known dilemmas, related to narrative and new media, can be resolved in the context ...

Analog to digital conversion has become, like many other processes drawn more and more into the digital domain. Delta-Sigma A/D conversion avoids some of the challenges with the digital components of traditional A/D ...

It has become more and more common to apply the Model-Driven Architecture (MDA) to development of systems based on the Service-oriented architecture (SOA), especially Web services. Standards for development of Web services ...

I datamaskiner må representasjoner baseres på biter og bytes. Dette gir ekstra utfordringer i forbindelse med representasjon av verdier som har en romlig utstrekning, fordi slike verdier ikke lar seg representere så direkte ...

The aim of this thesis is the specification, development and empirical assessment of a new security mechanism Promon capable of protecting existing programs against control flow attacks. Buffer overflows receive special ...

This document contains a description of the network infrastructure belonging to Oslo University College. It takes a large a complicated network and breaks it up into smaller and more manageable parts for a closer examination. ...

Model-driven development is by many predicted to become the next big leap in software development. This thesis investigates how quality of service (QoS) concerns could be incorporated in a model-driven development process. ...

In the present day, distributed systems are becoming more and more important. It can be difficult to stop such systems to perform an update, either because they are critical infrastructure, like air traffic control systems, ...

The increasing use of distributed real-time embedded systems in modern application domains introduces new challenges in developing software [1]. These systems present design constraints such as low memory and reduced ...