Wireless sensor network (WSN) is an emerging important research area. The variety in and number of applications is growing in wireless sensor networks. These wireless sensor nodes are tiny devices with limited energy, ...

OQL (Object Query Language) is a language that is to be used to query data from objectoriented databases (OODBs). It has been designed as part of the standards from ODMG (Object Data Management Group), and the one implemented ...

Applications needs to have their working set in main memory to work efficiently. When there is memory contention, data has to be read from and written to slow backing store, such as disk. Compressed caching is a way to ...

Digital information sharing is vital to improve efficiency in rescue and emergency operations. In the absence of infrastructure, the devices brought into the area by rescue personnel, might be used to set up a mobile ad-hoc ...

Sammendrag Denne oppgaven undersøker humor om kjønn og sex i e-post. Sentrale problemstillinger er: Hva er det som kjennetegner humor om kjønn og sex på internett, med hovedfokus på e-post? Hvilke former for relasjoner ...

Open distributed systems are composed of geographically dispersed components that may be modified at run-time. Such systems are becoming increasingly important, particularly when they are part of the infrastructure used ...

Estimating quality of service (QoS) parameters such as link delay distribution from the end-to-end delay of a multicast tree topology in network tomography cannot be achieved without multicast probing techniques or designing ...

Abstrakt: Å få gode indikatorer på prestasjons- og ferdighetsnivåer blant programvareutviklere har mange nyttige anvendelser, blant annet i rekrutteringsøyemed, opplæring og ressursplanlegging i ITprosjekter. Slike indikatorer ...

The master thesis is about the implementation of a mobile personal digital assistant in four home based care units in Almesund and Bakkøy in Norway. The research questions have come up as a result of an inductive process. ...

This thesis describes and analyses an experimental study (2003) which was carried out as a part of the COOL (Comprehensive Object-Oriented Learning) project, which was an introductory course in computer programming. ...

This thesis proposes an architecture for user interaction. The architecture is a message-based middleware that controls and manages the interface. The architecture has built-in features like single responsibility, state ...

I tradisjonell elektronikk er det to hovedproblemer som må løses i fremtidige aplikasjoner: effektforbruk og hastighet. Når det gjelder effektforbruk kan dette blant annet reduseres ved å benytte seg av såkalt ultra ...

Since 1997, when the new standard for wireless data communication emerged, it has been an explosive demand for wireless enabled products. Over time more and more devices get built-in wireless capabilities in connecting to ...

A master's thesis discussing and proposing an approach for model-based specification and realization of security in service-oriented architectures.

Denne hovedfagsoppgaven fokuserer på innføringen og bruken av mobil teknologi i nomadiske arbeidsmiljøer. Det har blitt undersøkt og diskutert hva slags påvirkning innføring av mobil IKT har på organisasjoner med mobile ...

This thesis is a part of the Creol-project. Creol (Concurrent REflective Object-oriented Language) is a language designed to investigate programming constructs and reasoning control in the context of open object-oriented ...

Due to recent advances in computer technology and network infrastructure, databases and data programs are becoming increasingly important in the metrology area. This thesis introduces a new methodology for automatic ...

The thesis is based on an action research project where I participated in the implementation of the health information system District Health Information Software (DHIS). The project was a part of the Health Information ...

Two discretizations of the flow equation for flow in porous media are presented and compared: the mimetic finite-differences method and two-point flux-approximation volume method. Theory and implementation of a layered ...

Digital maps are available on a large range of devices, many of them mobile. Because of the size of map data, they are often stored on a central server. Mobile devices have limited network bandwidth, and the traffic costs ...

As shown in this project the thought of using digital circuits for more than representing two values is almost as old as the semiconductor. In this thesis some of the history of multiple-valued circuits is described. One ...

Oppgaven tar for seg petrinet, og ser på hvordan dette verktøyet egner seg til å modellere større nett. Som eksempel på en type store nett er det brukt jernbanenett. Oppgaven presenterer også noen teknikker for å forenkle ...

This paper deals with horizontal gene transfer in eukaryotes, and the use of bioinformatics methods to detect such events. Horizontal gene transfer is the process where genetic material is exchanged between species. It has ...

Wavelets and wavelet transforms can be applied to various problems concerning signals. The ability to transform the signal into something representing frequencies and to see when the frequencies occurred, can be used in ...

This thesis addresses flow control in backpressured hop-by-hop packet networks. Our work evaluates the properties of a proposed flow control protocol, P, claimed to be lossless and free of both deadlocks and livelocks. The ...

QuA defines a component based software architecture for distributed systems, where QoS management is handled by the platform. To support QoS management, QuA uses pluggable service planners, that configure – or plan – ...

This master thesis provides a set of principles, or guidelines, which aim to give practical and useful information in the process of developing user interfaces on mobile devices. When talking about mobile devices the main ...

This thesis is about Location Based Computing Systems (LBCS), with emphasis on their underlying positioning systems. The first part of the thesis introduces a three-layered reference model for discussing LBCS, and gives ...

I denne oppgaven presenterer vi våre funn relatetert til bruk av Fler- konfigurasjonsruting (MRC, eng.: Multiple Routing Configurations) i data- nettverk som benytter en sentral nettverksadministrator, slik som en bånd- ...

Målet med denne oppgaven var å svare på hypotesen: “Agile metodikk er velegnet for modernisering eller re-design av enterprise informasjonssystemer. Men agile metodikk må følges av arkitektur og teknologi som forsterker ...

The concept of structured documents has been well-established since the 1980's. Current word processors, e.g. Microsoft Office and OpenOffice.org are able to save documents in structured XML-based formats. However, even ...

This thesis presents an analysis and implementation of accelerated power quality signal processing in a field programmable gate array (fpga). The purpose of this study is to show that a medium size FPGA has the necessary ...

In this thesis we study Ethernet as a technology for building interconnection networks. We start by changing the routing tables of traditional Ethernet to better utilize available resources in the interconnection network ...

The objective with this thesis has been to find out if it is possible to utilize low cost image sensors combined with fast digital logic as building blocks in laser based dust monitors. The field of application of these ...

Evaluation of a proposed method for temporal analysis of transient sounds in speech, using elements from neuroscience and speech recognition systems.

This master thesis addresses issues concerning learning from and with computer games. The thesis focus on principles that makes successful commercial computer games engaging and how and what people can learn from playing ...

Denne hovedfagsoppgaven tar for seg metoder innen bildeanalyse for å skille marg- og yteside på limtrelameller slik at disse kan vendes korrekt i forkant av sammenliming til limtrebjelker. Limtrebjelkene vil dermed ikke ...

Parallelt med Internetts fremvekst har vi sett en økt interesse rundt åpent kreativt samarbeid og fri flyt av informasjon. Størst konkret suksess har slike samarbeidsmodeller hatt innen programvareutvikling, hvor det ...

I oppgaven er det jobbet med kretser som er bygget i semi floating-gate logikk. Det er vurdert en binær til flernivå konverter (BFK) som tilsvarer DAC, og en flernivå til binær konverter (FBK) som tilsvarer ADC. Det er ...

The problem addressed is how large organizations may develop information systems that will work together over time. The Case is taken from the Norwegian Defence Logistics Organization (NDLO) where a number of large ...

This paper consists of three complementary parts. First, there are the fundamental problems and challenges about the foundations [1,2,9] of Machine Composition (MC), especially in relation to human composition. Second, ...

Health Information Systems (HIS) are used to collect and analyze health data in order to support the improvement of health care services. Public health care in third world countries are often based on a poor functioning ...

In this thesis we look into the problem of grouping multicast receivers into multicast groups. More groups will give the receivers a stream better customised to their own bandwidth conditions. Less groups will better take ...

In this thesis we show that the Component Quality Modelling Language (CQML) is well suited for use in a real life distributed system. CQML is a language for modelling quality of service (QoS). QoS tells something about ...

The purpose of this project is to extend parallel Diffpack with an external parallel package called Trilinos. Numerical methods are effective at solving a variety of problems on parallel computers. Some of the functions ...

This thesis is about challenges in Information Systems (IS) development in developing countries contexts, with an emphasis on challenges faced in processes dealing with improvement and replacement of Health Information ...

This thesis is documenting the work done in the field of simulating the logical function of an optical packet switch in hardware. By implementing a code written in VHDL in a FPGA, the basic functions for this switch is ...

Denne masteroppgaven har fokusert på å avdekke bruksmønster blant aktive brukere av informasjons- og kommunikasjonsteknologi (IKT) på tog. Motivert av Telenors pilot av Internett på tog, har det også blitt avdekket hvordan ...

Distance Education is one of the important factor for overall development of any society but due to lack of good educational as well as Information Technology Communication infrastructure and many other reasons developing ...

Oppgaven er gjennomført med tanke på å finne ut om genetiske algoritmer kan benyttes i forbindelse med smarte antenner. Etter å ha gjennomført litteratursøk, viste det seg at mange har forsøkt dette med hell, og oppgaven ...

With the multiplicity of operating systems it is becoming common practice for organizations to deploy heterogeneous systems environments in order to benefit from their different advantages. The tradeoff of building ...

This thesis presents a framework for generating clients to computer systems that are based on COMDEF. COMDEF was an early attempt at Modeling Based Development. While working on this thesis, the development of COMDEF has ...

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 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 ...

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 ...

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 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 ...

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 ...

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 ...

This report is a study into the use of a novel Compound back Electromotive Force (CBEMF) method for driving brushless direct current (BLDC) motors. The study was conducted in an attempt to find a simpler drive-method that ...

This thesis investigates the efficiency of extent-based allocator design to satisfy file allocation requests in a CDN proxy cache. The allocator is based on the method inspired by the memory allocators, where free space ...

An Evaluation of CORAS By Jenny B. Hougen The goal of the research was to continue the research of CORAS with the purpose of evaluate and improve the CORAS framework. The research consisted of two main investigations: ...

I introduced a new circuit derived from a real-time reconfigurable perceptron, called “Output-Wired Inverter structure” (“OWIS”) which operates under low energy conditions into a Kogge-Stone adder in order to characterize ...

This paper is submitted as the final work for obtaining the title Cand. Scient. at the Dept. of Informatics at the University of Oslo, Norway. The paper is a case study of working implementations of soft real-time features ...

The purpose of this thesis is to provide a study of an implementation of a graphical user interface (GUI) in a presentation program intended for non-expert users. The type of program is chosen because it’s no secret that ...

Businesses rely increasingly on Internet services as the basis of their income. Downtime and poor performance of such services can therefore be directly translated into loss of revenue. In order to plan and design services ...

Information system implementations in developing countries have demonstrated a tendency to fail to persist over time. This thesis addresses this issue of sustainability by exploring how global software development and local ...

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 ...

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 ...

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 ...

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 ...

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 ...

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) ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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 ...

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 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 ...

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 ...

There are currently few effective methods of entering text by the use of joysticks. Textix is a new strategy for text entry using two small joysticks, preferably controlled by thumbs. The technique is based on mimicking ...

Det er liten tvil om at digitale verktøy kan effektivisere og forenkle arbeidsoppgaver, at de påvirker arbeidsprosesser, og ofte forandrer arbeidsrutiner. Men hva med kreativitet? Kan bruken av digitale verktøy understøtte ...

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 ...

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 ...

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 ...

Denne oppgaven handler om mobil handel, hvordan sluttbrukere aksepterer ny teknologi, og innovasjon i store bedrifter. Spesielt er det tatt utgangspunkt i flyselskapene i Norge og deres løsninger på bookingsystemer for ...

The IT-industry has a poor reputation when it comes to effort and schedule overruns. This thesis seeks to propose ways of reducing overruns in the IT-industry, through investigating the use of estimation in the Norwegian ...