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

Background Photodynamic therapy (PDT) involves systemic or topical administration of a lesion-localizing photosensitizer or its precursor, followed by irradiation of visible light to cause singlet ...

This paper addresses the problem of base station coordination and cooperation in wireless networks with multiple base stations. We present a distributed approach to downlink multibase beamforming, which allows for the ...

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 ...

Oppgaven har til hensikt å foreta en ytelseanalyse av to rutingalgoritmer; FRoots og Dimension-Order. Dimension-Order er egentlig ikke navnet på en spesifikk rutingalgoritme, men heller navnet på en kategori rutingalgoritmer ...

This thesis is the final part of my Master Degree at the University of Oslo Department of Informatics. The thesis has been carried out under the supervision of Professor Thomas Plagemann and Phd. student Matija Pužar (Author ...

This thesis presents an in-depth theoretically underpinned empirical analysis of the challenges to integrate the fragmented health information systems within the Zanzibar health care system. The research is situated in the ...

This study focuses on the challenges of building health workers capacity for understanding and using health data through training and support. The study falls under the action research paradigm in which health workers at ...

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 ...

Et sentralt problem innen medisinsk forskning er å gruppere pasienter med hensyn til diagnose, prognose eller behandling, ut fra prøveresultater. Hvis prøveresultatene for en pasient består av genekspresjonsmålinger fra ...

As automated fingerprint recognition systems gain popularity, the proliferation of information about unchangeable biometric characteristics causes serious privacy and security concerns. This information may enable an ...

Denne oppgaven vurderer hvordan moderering i et webbasert diskusjonsforum kan gjøres på en best mulig måte. Den tar for seg de dilemmaer moderatorer sitter med i disse foraene. Det være seg ansvar for nettstedet, redaktør- ...

Current object-oriented approaches to distributed programs may be criticized in several respects. First, method calls are generally synchronous, which leads to much waiting in distributed and unstable networks. Second, the ...

User profiling based on process usage is on approach for adding an extra security layer to our computer systems. In addition it can be of great value for classification of a company/school network and the their user groups. ...

This thesis has two main objectives. First is to investigate the two research questions. Second objective is to find how information system can support the processes related to care delivery. The setting is at Rikshospitalet ...

Forskning i beslutnings- og bedømmingspsykologi har vist at statistisk prediksjon har potensiale til å forbedre prediktiv beslutningstaking på mange områder. Dette har foreløpig fått liten innvirkning på praktisk ...

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 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 ...

This master thesis looks at how electronic mail (e-mail) should be assessed when used as evidence. There are two parts, a theoretical part that focus on the technical properties of e-mail, and a practical part which includes ...

The aim with this thesis is to investigate how we can create unified interfaces to some key software components that are needed when solving partial differential equations. Two particular components are addressed here: ...

Current research is fine-tuning the usability evaluation methods in order to aid current and future usability practitioners. Some of the main research topics are sample sizes and appropriate statistical methods for analysing ...

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 ...

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 ...

Several data stream management systems (DSMSs), enabling their users to measure and analyze the behavior of a data stream on-line, are now available to the public. Network monitoring, as a challenging application domain, ...

Serious Games: Video game design techniques for academic and commercial communication, by Christian Bull-Hansen, Department of Informatics, University of Oslo, Norway. Traditional academic and commercial communication ...

When you are going to make a prediction about a person or an event based on a set of data, there are two possible modes of data combination available. One is the clinical method which relies on human judgment, experience, ...

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 ...

The usage of collaborative filtering mechanisms has become widespread on the web. But how reliable are such recommendation systems as a basis for making out choices? This thesis starts by compiling a list of known weaknesses ...

Flere helseforetak er i gang med, eller har utviklet systemer som gir brukere av foretakene tilgang til ulike elektroniske tjenester. Hva disse portalene tilbyr av innhold og funksjonalitet varier i form av hvilke tjenester ...

I oppgaven vurderes forskjellige kommunikasjonsmodeller i global softwareutvikling og hvordan disse påvrker utviklingsprosessen. Fire modeller blir utforsket: En hierarkisk modell, en nettverksmodell, en fellesskaps/comm ...

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 ...

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 ...

Todays computer networks are continuously expanding both in size and capacity to accommodate the demands of the traffic they are designed to handle. Depending on the needs of the network operator, different aspects of ...

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 ...

In software development tool support is essential. Since the standardization of UML and Model Driven Architecture (MDA), new approaches in the design and implementation of software systems have flourished. These approaches ...

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 ...

This thesis presents an interpretative study of technology use. It attempts to deepen our understanding of the relationship between users and the equipment they use. In particular, it tries to address the ways in which the ...

Network monitoring is an important task in the Internet. It is also a very complex task. Especially managing the measurement data, since the amount of data involved makes it difficult to organise and store. InTraBase was ...

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 ...

In this thesis, I investigate the style guide processes in Telenor, a Norwegian mobile operator that is one of the largest in the world. The ‘style guide problem’ is well known, and it is difficult to handle guidelines, ...

This thesis is about methods to tackle large quantities of information. It will give an introduction to how information is structured to increase understanding and how to present this in a simple and effective manner. The ...

Ulike kontekster kan kreve ulike egenskaper ved plagiatdeteksjonssystemer. Det beste systemet for plagiatdeteksjon ved et innføringskurs i programmering trenger ikke nødvendigvis å være det beste til bruk ved senere kurs. ...

Today, the computation power and storage capability on mobile devices are increasing rapidly, and together with new interactive services this creates a demand for more bandwidth. To keep track of this evolution, the use ...

In order to achieve shorter execution times of Python code, I look at means of compiling Python into C++. To perform this task, I have written a Python compiler, and this compiler generates C++ code from a subset of the ...

Late binding allows flexible code reuse but complicates formal reasoning significantly, as a method call’s receiver class is not statically known. This is especially true when programs are incrementally developed by extending ...

Abstract Microsoft Word has been used a lot for a long period of time, but still we can hear complaints from the users, where they for instance say that they cannot find the file they know they saved. And if they take ...

Model-Driven Development (MDD) with UML is gaining widespread use in the IT-industry. However, little is known with regards to the actual costs and benefits of MDD with UML. This thesis is a systematic review of 21 selected ...

This thesis delves into the field of general purpose computation on graphics processing units (GPGPU). A MATLAB interface for solving numerical linear algebra on the graphics processing unit (GPU), and three algorithms from ...

Oppgaven har gått ut på å utvikle et verktøy for å konstruere PANS-OPS prosedyrer og luftrom tredimensjonalt. En PANS-OPS prosedyre er en prosedyre for inn- eller utflyging til en flyplass og har til hensikt å beskrive en ...

This paper presents a case study evaluating the use of STAIRS when specifying a system for connecting service providers and people requesting those services. As part of the case study, we give an example of how STAIRS may ...

This research falls under the domain of design and implementation of Health Information Systems (HIS) mainly in developing countries. The study was motivated by previous research conducted on HIS which have revealed that ...

The aim of this thesis is to discuss some sociotechnical aspects of the Semantic Web’s somewhat, at least so far, seemingly failure to materialize on a larger scale, by using the methodology of Actor-Network Theory and ...

Collaborative tools in general and the MOSCITO-group with their search for social capital in special, and as our case-study. We wanted to look into which collaborative technologies were available. Which collaborative ...

This paper describes a technique for realizing a high-rank channel matrix in a line-of-sight (LOS) multiple-input multiple-output (MIMO) transmission scenario. This is beneficial for systems which are unable to make use ...

Today, there are several algorithms and tools available for aligning nucleotide sequences locally. In this master thesis is especially MegaBlast, bu also other tools in the BLAST family, used in the construction of two ...

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 ...

Parallellisering har blitt et veldig aktuelt tema de siste årene innenfor software-utvikling. En vesentlig grunn til dette er at hardwareprodusenter velger å gi ut datamaskiner og spillekonsoller med flere prosessorer. I ...

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 ...

OSPF, Open Shortest Path First, is an Intra-gateway routing protocol first developed as an IETF effort. It is widely adopted in large enterprise-scale networks, being well regarded for its fast convergence and loop-free ...

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 ...

Design of sensors with limitations in areas up to a few mm2, ultra low-power, capable of customization into aWireless Sensor Network (WSN) for monitoring applications, represents one of the most challenging and discussed ...

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

Abstract In the QuA component based middleware architecture, the implementation broker assists the service planner in service planning by performing resource discovery. Pluggable core services is a key feature in QuA, and ...

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 ...

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 ...

Client-server architecture is a well documented and popular approach to design of distributed systems. A server that provides a set of services (applications) to various clients is called an application server; such servers ...

Masteroppgaven dreier seg om utforming og implementasjon av et UML utviklingsverktøy som utnytter et Model/View konsept hvor viewet kan se helt annerledes ut enn modellen. Som eksempel skal det utvikles et verktøy som har ...

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 ...

More and more evidence in criminal proceedings are digital and an increasing amount of evidence is being gathered during crime investigation in Norway. The prosecuting authority’s obligation to present information about ...

This thesis investigates issues related to the development and implementation of OSS (Open Source Software) for health care in developing countries. The aim is to understand why the same OSS technology for health care leads ...

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 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. ...

Mobile Ad-Hoc Networks (MANETs) are an important communication infrastructure to support emergency and rescue operations. To address the frequent disconnections and network partitions that might occur, we have developed a ...

It is well known that software documentation in open source projects is often poor and incomplete. Open source communities are generally driven by project members doing what they want to do, and because few programmers ...

Soft real-time requirements are often related to communication in distributed systems. Therefore it is interesting to understand how UML sequence diagrams can be used to specify such requirements. We propose a way of ...

Proper authentication is needed to avoid theft and destruction of data by unauthorized parties. This research proposes to add software biometrics to the authentication and verification process, using keystroke dynamics. ...

The traffic and the number of users on the Internet are increasing, and service providers must respond to this demand if they are not to loose both customers and revenue. In order to provide a satisfactory level of QoS, ...

Virtualization and virtual machines are becoming more and more important for businesses. By consolidating many servers to run as virtual machine on a single host companies can save considerable amounts on money. The savings ...

Parprogrammering er en arbeidsmetodikk som ble gjort kjent gjennom den smidige(agile) utviklingsmetodikken Extreme Programming(XP). De siste årene har smidige utviklingsmetodikker fått stadig mer oppmerksomhet og utbredelse. ...

In this report we explore aspect-oriented modeling for UML 2.0 sequence diagrams. We ensure that the aspect weaving is semantics-based by using a formal trace model for sequence diagrams. A major challenge is to handle ...

UML sequence diagrams is a specification language that has proved itself to be of great value in system development. When put to applications such as simulation, testing and other kinds of automated analysis there is a ...

Tjenesteorienterte arkitekturer er et av begrepene i dagens IT-industri som får mest oppmerksomhet. Offentlige myndigheter har også adoptert dette begrepet og ønsker å tilby tjenester til borgere og næringsliv gjennom ...

I have designed and implemented an application for collaborative work and socializing for the design group at the Institute for Informatics (IFI) at the University of Oslo (UIO) and this thesis will present the results of ...

Plagiarism in connection with computer programming education is a serious problem. This problem is common to many universities around the world, and the University of Oslo (UoO) makes no exception. The major problem is ...

Mange unge mennesker opplever museumsbesøk som kjedelige. Utstillingene er ofte uten noen form for brukerinteraksjon og er på den måten lite underholdende. Dette er ikke tilfellet for det interaktive Vitensenteret som ...

Mobile Ad-Hoc Networks maintain information about reachable nodes in the routing table. In many application scenarios, human groups play an important role. This is visible at the network level as independent network ...

Background: Like any research discipline, software engineering research must be of a certain quality to be valuable. High quality research in software engineering ensures that knowledge is accumulated and helpful advice ...

This doctoral thesis contains a collection of five papers preceded by an introduction. The papers investigate channel models for, design of, and performance analysis of wireless multiple-input multiple-output (MIMO) systems ...

With the wireless media and ad hoc nodes operating both as routers and communication end-terminals, the ad hoc routing protocols are more prone to attacks than the network layer of fixed networks. Authenticated routing ...

The first commercial Cochlea implant was released in 1982. In the following ten years the implants were significantly improved, and has now become a common aid for individuals with severe to profound hearing loss. Briefly ...

"The CORAS language is a graphical modeling language used to support the security analysis process with its customized diagrams. The language has been developed within the research project "SECURIS" (SINTEF ICT/University ...

The Universal Mobile Telecommunication Services (UMTS) network was envisioned to carry a wide range of new services; however, the first UMTS release was not designed to efficiently support multimedia content. In this thesis ...

Interconnection networks were traditionally confined to multiprocessors where low latency and high bandwidth were necessary for interprocessor communication. But in the last decade interconnection networks have become ...

STAIRS is a method for the step-wise, compositional development of interactions in the setting of UML 2.x. UML 2.x interactions, such as sequence diagrams and interaction overview diagrams, are seen as intuitive ways of ...

The request for on-line privacy is rapidly increasing. More and more Internet users realize that information about their on-line activities is highly valuable information for commercial companies and open for potential ...

The Internet is increasingly used to transport time-critical traffic. Applications like video conferencing, television, telephony and distributed games have strict requirements to the delay and availability offered by the ...