Plagiarism is a common problem in undergraduate computer science courses that involve assessment of programming assignments, and the Department of Informatics (Ifi) at the University of Oslo is no exception. One way of ...

This master thesis investigates the use of dual layer virtualisation to create a homogenous computing environment and enable live migration between cloud providers. Dual layer virtualisation was successfully implemented ...

In 2004, the European Space Agency proposed a new Synthetic Aperture Radar mission, Wavemill, which would use new techniques to measure ocean height and ocean velocity down to 10 cm/s. Due to the high sampling frequency ...

In an emergency and rescue (ER) scenario, e.g. in the aftermath of an earthquake, the regular communication infrastructure might not be available. Modern mobile devices can still, however, form a network between themselves. ...

Static non-linear Hamilton-Jacobi equations are often used to describe a propagating front. Advanced numerical algorithms are needed to effi- ciently compute solutions to these non-linear equations. In geological modelling, ...

The objective of this study is to improve completeness, accuracy and timely reporting of maternal health data in the health information system. This will improve the availability of reliable data for making appropriate ...

We introduce Dynamic SOS as a framework for describing semantics of programming languages that include dynamic software upgrades. Dynamic SOS is built on top of theModular SOS of P.Mosses, with an underlying category theory ...

The purpose of a simulation is to try to get an indication on how a given system will behave in a range of different scenarios. For this kind of research to have any value, it is important that the simulator models reality ...

In recent years, there has been a drive towards parallel architectures to further increase computational performance. The many-core architecture of modern Graphics Processing Units (GPU) can be used for general computations in ...

This thesis investigates the predictability of Twitter traffic for topic-related websites’ resource requirements by developing and implementing a data mining methodology. The new traffic correlation mining process is able ...

Information overload is a complex and growing problem that many systems have tried to remedy. Recognizing that technology alone will probably not be enough to solve this problem, and that conventional knowledge work practices ...

Deterministic, transition-based parsing has seen a surge of interest over the recent decade, with research efforts targeting Dependency Grammar, Context-Free Grammar, Head-Driven Phrase Structure Grammar (HPSG), and ...

The purpose of this thesis was to investigate the use of a microcontroller and mobile phone to create a highly mobile data acquisition device for human movement. Another aim was to make the technology as transparent as ...

Modern computing systems, such as supercomputers, data centers and multicore chips, generally require efficient communication between their different system units; tolerance towards component faults; flexibility to expand ...

Dette eksplorative studiet undersøker hvordan sosiale medier blir benyttet og oppfattet av både grasrot og tradisjonelle interessegrupper i Norge for å skape sivilt engasjement, spesifikt politisk mobilisering. Basert på ...

With the continual growth in number of cores on the Central Processing Unit (CPU), developers will need to focus more and more on concurrent programming to get the desired performance boost that in the past have come ...

This thesis presents an overall performance comparison between the Btrfs and Ext4 filesystems by using both synthetic and real world application benchmarking tools. It also compares Btrfs's transparent compression and ...

Mobiltelefoner har de siste årene fått økt popularitet i samfunnet vårt. Gjennom mobilteknologi er man ikke lenger bundet til en fastlåst, innendørs setting, og mobiltelefonen har blitt en viktig enhet for kommunikasjons- ...

Denne oppgaven går gjennom forskjellige type teknologier for å utvikle en mobil offshore klatre robot.

This thesis is generally about network performance analysis. It contains two parts. The theory part summarizes what network performance is and inducts the methods of doing network performance analysis. To answer what network ...

This thesis will explore and investigate the possibility of implementing nested clouds to increase flexibility. A nested cloud is a private cloud running inside another private or public cloud. The goal is to enable live ...

Natural Language Processing and Information Extraction systems can annotate free text with meta-data, thus making it possible to automate processes within clinical care as well as helping medical research gain insight into ...

In the networked world, privacy and visibility become entangled in new and unexpected ways. This article uses the concept of networked visibility to explore the entanglement of technology and the visibility of patient ...

In modern computing, the Graphical Processing Unit (GPU) has proven its worth beyond that of graphics rendering. Its usage is extended into the field of general purpose computing, where applications exploit the GPU's massive ...

One of the main challenges when developing mobile robots is path planning. Efficient and robust algorithms are needed to produce plans for the movements of the robot. Many classical path planning algorithms depend on ...

Bærbare datamaskiner, nettbrett, smarttelefoner o.l. har gradvis fått støtte for flere nettverkstilkoblinger med stor båndbredde. Bærbare maskiner har muligheter for tilkoblinger via ethernet og trådløse nett (WLAN). De ...

In recent years, adaptive beamformers have been researched more extensively, to be able to use it in the application of medical ultrasound imaging. The adaptive beamformers can provide a higher resolution and better ...

Probabilistic models such as Bayesian Networks are now in widespread use in spoken dialogue systems, but their scalability to complex interaction domains remains a challenge. One central limitation is that the state space ...

Nowadays, individuals are surrounded by several personal multimedia capable devices. This can leverage ubiquitous computing. Yet, in recent years, multimedia applications have increased their popularity and demand. These ...

We present a new wireless transceiver board for the CUI32 sensor interface, aimed at creating a solution that is flexible, reliable, and with little power consumption. Communication with the board is based on the ZigFlea ...

Oppgaven beskriver og diskuterer utviklingen av rammeverket GraphiteJS (Graphite), en implementering av et JavaScript (JS) Application Programming Interface (API) for å aksessere Semantic Web (SW). Den skisserer den ...

Database management systems have traditionally been implemented entirely in software. However, adding hardware to database cluster servers to gain more speed has its price. Firstly, the cost of the hardware itself, secondly ...

In today's distributed computing environment where computer networks and Internet are convenient medium of communication and information exchange, security is becoming more and more of an issue. Security in computer networks ...

This paper contributes to the general understanding of the geometrical model of concurrency that was named higher dimensional automata (HDAs) by Pratt and van Glabbeek. In particular we provide some understanding of the ...

A central part of the ubiquitous computing world of today is Wireless Sensor Networks (WSN), consisting of node-based components in a mesh that detects the environment around it. The sensing and radio part of the WSN ...

Salgstallene på smarttelefoner og nettbrett har de siste årene skutt i været, og disse mobile enhetene bringer med seg nye tjenester og muligheter. Dette har ført til mye oppmerksomhet rundt valg av plattformer, standarder ...

This report provides an overview over our efforts in continuing the work started by two previous students with the goal of implementing a full WirelessHART network stack on Atmel wireless sensor nodes. This is a collaborative ...

TCP tries to send as quickly as possible, yet react to congestion in the network by reducing its send rate when a packet is dropped. This function, however, only concerns one out of the two directions that TCP is operating ...

In this thesis a large dataset is investigated with respect to consistency and periodicity with the purpose of being used as basis for prediction. The dataset is then to be used to train a artificial neural network which ...

This thesis presents an investigation into the idea of using Cellular Automata to compress digital data. The approach is based on the fact that many CA configurations have a previous configuration, but only one next ...

Det å vedlikeholde systemer som tar i bruk åpen kildekode rammeverk viste seg å være krevende. I denne oppgaven har vi videreutviklet Joly med nye funksjonaliter hvor dette hovedsakelig dreier seg om å benytte Joly som et ...

In computer vision, silhouette extraction plays an important role. Many applications need to extract people or objects, e.g. in video surveillance, tracking of objects, human or object detection, 3D-reconstruction or mixed ...

The motivation for this master thesis originates from Lars Nygaard s cand. philol. thesis from 2006 (Nygaard, 2006), from which a prototype for a Norwegian wordnet was generated by analyzing definitions for nouns in ...

This paper presents an experiment on sound tracing, meaning an experiment on how people relate motion to sound. 38 participants were presented with 18 short sounds, and instructed to move their hands in the air while acting ...

Distributed and concurrent object-oriented systems are difficult to analyze due to the complexity of their concurrency, communication, and synchronization mechanisms. Rather than performing analysis at the code level of ...

An increasing volume of text is currently in the process of being digitized from paper, or converted to plaintext from paper-centric file formats. Since these kinds of documents have typically been typeset for a two-dimensional ...

Node selecting tree automata (NSTAs) constitute a general formalism defining unary queries over trees. Basically, a node is selected by an NSTA when it is visited in a selecting state during an accepting run. We consider ...

In this master thesis the modular architecture SQSI (Search Queries for Sysadmin Information) aimed at facilitating efficient information retrieval, unification and personalization, for system administrators is designed. ...

Advances in microelectronics and communication technology have provoked a significant increase in computing devices equipped with sensors and communication capabilities. This has led to an increasing interest in software ...

An investigative study on community, reliability and usability of CFEngine, Chef and Puppet is represented in this paper. This research study attempts to quantify software qualities like community, reliability and usability ...

This thesis investigates the topic of subsurface reservoir grid visualization. An open-source Matlab toolbox for simulating and visualizing reservoirs is introduced. To make this toolbox work in Octave, an open-source ...

This thesis explores the possibilities of using iPad in a master study environment as a mobile tool for collaboration among students. The study is done in the period of one semester at IFI2 building at the University of ...

The aim of this thesis was to explore the relationship between Kinetic User Interfaces (KUI) and exercise motivation in youths. This thesis divided this exploration into three sections, and began by examining how the KUI ...

In the recent years, the graphics processing unit (GPU) has emerged as a popular platform for performing general purpose calculations. The high computational power of the GPU has made it an attractive accelerator for ...

Key Words: Natural Language Processing (NLP), Software Infrastructure, Language Engineering (LE), Analysis Engines, Distributed Hash Tables (DHT), RESTFul, Service Oriented Architecture (SOA), NLP Interchange Format ...

Spoken dialogue systems are instantiated in complex architectures comprising multiple interconnected components. These architectures often take the form of pipelines whose components are essentially black-boxes developed ...

The use of robotic systems for remote ultrasound diagnostics has emerged over the last years. This thesis looks into the possibility of integrating the Kinect sensor from Microsoft into a semi-autonomous robotic system for ...

Background Cancer progression is associated with genomic instability and an accumulation of gains and losses of DNA. The growing variety of tools for measuring genomic copy numbers, including various types ...

Background Expression of the two transcription factors microphthalmia-associated transcription factor (MITF) and signal transducer and activator of transcription 3 (STAT3) are tightly connected to cell ...

Software product-line engineering is a paradigm for developing software applications through reuse and mass customization. A product family provides a repository of reusable components, where each component has a number ...

Code smells are indicators of software design shortcomings that can decrease software maintainability. An advantage of code smells over traditional software measures is that the former are associated with an explicit set ...

Health reform initiatives in most developing countries include introduction of information and communication technologies (ICTs). Conventio nally, it is thought that the introduction of ICTs will also help to modernize ...

Real-time embedded systems (RTES) are part of a vast majority of computing devices available today. They are widely used in critical domains where high system dependability is required. These systems typically work in ...

Critical systems such as those found in the avionics, automotive, maritime, and energy domains are often subject to a formal process known as certification. The goal of certification is to ensure that such systems will ...

It is both an experimental and theoretical fact that imaging of scatterers using bandlimited signals results in what is known as a diffraction-limited image. As a consequence, the best possible resolution obtained from a ...

This thesis studies how the multi-core hardware architecture can be efficiently used for real-world scientific applications that arise from computational cardiology and computational geoscience. The investigation has been ...

Countless applications use the propagation and reflection of sound to gain better knowledge of the surrounding medium. This medium can, for instance, be made of a set of complex and heterogeneous biological tissues or of ...

Abstract To strengthen and further develop health information in Kerala, the state decided to implement a robust Health Management Information System (HMIS) and to switch to electronic reporting from facility level up to ...

A gameplay scenario can be defined as a series of events that emerge from a given context. These events can potentially be influenced by the player through gameplay, which results in meaningful interaction with the simulation. ...

I 2011 blei det for første gong selt fleire smarttelefonar enn PC-ar, og dette viser til at det er nødvendig å tilpasse seg den raskt veksande trenden både for offentlege og private verksemder. Eg har hatt som mål å utvikle ...

Det finnes mye forskning på bruken av mobiltelefon som et musikkinstrument. Derimot har det blitt gjort mindre forskning på bruk av mobile enheter til å skape et musikalsk nettverk som gir en gruppe mennesker muligheten ...

E-bøker har de siste årene etablert seg som et alternativ til de tradisjonelle papirbøkene. Samtidig har digitale bibliotek som Prosjekt Runeberg vokst frem og kan tilby litteratur som har "falt i det fri". Prosjekt Runeberg ...

Microcontrollers with little available resources, such as program memory, RAM and speed, are in most cases programmed in low level languages such as Assembly, C and C++, these languages can be hard to learn for new programmers ...

Today, a large number of (elite) sports clubs spend a large amount of resources to analyze their game performance, either manually or using one of the many existing analytics tools. In the area of soccer, there exist several ...

The necessity of allowing time-sharing a single computer between multiple, single tasking operating systems emerged the concept of virtualization. As a result, old concept of one-operating system for one-server paradigm ...

Software traceability is an important factor for effective development, maintenance, understanding and reuse of a software system. While traceability historically focused on ensuring that all requirements were implemented ...

The aim of this thesis was to investigate different performance aspects of two reverse proxy cache servers which are called Varnish and Apache Traffic Server. It uses the tool Web Polygraph to generate various types of web ...

Denne oppgaven tar for seg hvordan unge tenåringer benytter humor i sin onlinehverdag. For å belyse problemstillingen har jeg benyttet meg av teori som omhandler digitale medier og humor, samt kvalitative og kvantitative ...

Health Information Systems (HIS) are a critical component of a health system, but have often been neglected in most developing countries. The Health Information Systems Programme (HISP) tries to remedy this, by working ...

Oppgaven gikk ut på å designe et nettsted gjennom å utføre en brukersentrert iterativ designprosess. Designeren blir ofte forestilt en designprosess der alt skal gå bra og der brukerne er mennesker uten egenskaper. Det er ...

This report extends our behavioral type and effect system for detecting dealocks in [8] by polymorphism and formalizing type inference (wrt. the lock types. Our inference is defined for a simple concurrent, first-order ...

Over the past decades, a number of calculi for automated reasoning have been proposed that share some core features: 1. proofs are built in a tableau/sequent style as trees where nodes are labeled with literals, and 2. ...

Coherent logic is a syntactically defined fragment of first-order logic. The paper describes an experiment with a prover for coherent logic. A prover here means software that takes as input a theory in coherent logic, and ...

We study the membership problem for regular expressions extended with operators for unordered concatenation and numerical constraints. The unordered concatenation of a set of regular expressions denotes all sequences ...

In emergency intervention and rescue operations, the coordination and collaboration of the rescue personnel is highly important for the success of the mission. Data networks formed between the devices carried by the rescue ...

Federation of semantic data on SPARQL endpoints will allow data to remain distributed so that it can be controlled by local curators and swiftly updated. There are considerable performance problems, which the present work ...

Den første smarttelefonen ble lansert av Apple i 2007 og ble kalt iPhone. Siden da har flere produsenter lansert sine egne smarttelefoner, samtidig som Apple har lansert nye utgaver av iPhone. iPhone og Android er nå de ...

With musical applications in mind, this paper reports on the level of noise observed in two commercial infrared marker-based motion capture systems: one high-end (Qualisys) and one affordable (OptiTrack). We have tested ...

Background We recently reported that in an experimental setting the zero pressure level of solid intracranial pressure (ICP) sensors can be altered by electrostatics discharges. Changes in the zero pressure ...

Our research on music-related actions is based on the conviction that sensations of both sound and body motion are inseparable in the production and perception of music. The expression "musicrelated actions" is here used ...

Masteroppgaven presenterer ulike verktøy for Object/Relational mapping og deres spørreteknikker. Videre presenteres en prototype for et nytt spørre-API, kalt Fluenty. I løpet av implementeringen av Fluenty har det blitt ...

With the blossom of virtualization and cloud computing, virtualized systems can be found from small companies to service providers and big data centers. All of them use this technology because of the many benefits it has ...

Holmenkollen is a ski jumping hill, a place and a structure of cultural and historical importance in Norway. This thesis describes the development of the situated simulation Holmenkollen Time Travel (HTT), an application ...

The purpose of this project has been to look at different approaches to test if a software program works as wanted or as expected. Testing is a broad term, and is used in different ways and for different purposes. This ...

The scheduler is the key component of the Linux kernel. What makes the scheduler crucial is that scheduler serves as a mediator between system resources such as CPU, and requests. It schedules and manages processes to have ...

As of today, sonar imaging is the most effective means of documenting the subsea environment. Existing sonar imaging systems generally rely on conventional beamforming methods to form the image. While conventional beamformers ...

This thesis provides a tool for helping wireless network professionals to recognize different Rate Adaptation Algorithms (RAA) implemented in IEEE 802.11 wireless network device drivers. The RAA used in the wireless network ...

In this thesis it has been discovered that the verbally based communication amongst paramedics is unsatisfactory. The ‘one-to-all’ radio communication system which is utilized today does not have the capacity needed to ...

Computer networks are growing, making it difficult to keep track of all the hosts and services running on these hosts on the network. Using traditional methods like port scanning to detect hosts and services is cumbersome, ...