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Implementing and optimizing a Sparse Matrix-Vector Multiplication with UPC
(Research report; Forskningsrapport, 2016)
Programmability and performance-per-watt are the major challenges
of the race to Exascale. In this study we focus on Partitioned Global
Address Space (PGAS) languages, using UPC as a particular example. This
category of parallel languages provides ease of programming as a strong advantage
over the classic Message Passing Interface(MPI). PGAS has also
advantages compared to classic shared memory ...
Experimental Fault-Tolerant Synchronization for Reliable Computation on Graphics Processors
(Research report; Forskningsrapport, 2012)
Graphics processors (GPUs) are emerging as a promising platform for highly parallel, compute-intensive, general-purpose computations, which usually need support for inter-process synchronization. Using the traditional lock-based
synchronization (e.g. mutual exclusion) makes the computation vulnerable to faults caused by both scientists’ inexperience and hardware transient errors. It is notoriously ...
IMP: a multi-species functional genomics portal for integration, visualization and prediction of protein functions and networks
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
Integrative multi-species prediction (IMP) is an interactive web server that enables molecular biologists to interpret experimental results and to generate hypotheses in the context of a large cross-organism compendium of functional predictions and networks. The system provides a framework for biologists to analyze their candidate gene sets in the context of functional networks, as they expand or ...
Muithu: Smaller Footprint, Potentially Larger Imprint
(Research report; Forskningsrapport, 2012)
We describe our experience with the Muithu sports notational analysis system, a novel digital information system in the popular sports domain. The system integrates real-time coach notations with related video sequences, and is configured with small, off-the shelf and cheap components. Muithu requires little or no human post-processing, which is in strong contrast to state-of-the art resource-intensive ...
Pro-Anorexia and Pro-Recovery Photo Sharing: A Tale of Two Warring Tribes
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
There is widespread use of the Internet to promote anorexia as a lifestyle choice. Pro-anorexia content can be harmful for people affected or at risk of having anorexia. That movement is actively engaged in sharing photos on social networks such as Flickr.
Objective: To study the characteristics of the online communities engaged in disseminating content that encourages eating disorders (known as ...
Improving Diabetes Care for Young People With Type 1 Diabetes Through Visual Learning on Mobile Phones: Mixed-Methods Study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
Background: Only 17% of Norwegian children and adolescents with diabetes achieve international treatment goals measured by glycated hemoglobin (HbA1c). Classic patient–physician consultations seem to be poorly adapted to young children. New strategies that are better attuned to young people to improve support of adolescents’ self-management of diabetes need to be tested and evaluated. Objective: ...
HealthTrust: A Social Network Approach for Retrieving Online Health Videos
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
Background: Social media are becoming mainstream in the health domain. Despite the large volume of accurate and trustworthy health information available on social media platforms, finding good-quality health information can be difficult. Misleading health information can often be popular (eg, antivaccination videos) and therefore highly rated by general search engines. We believe that community ...
Telemedisin - teknologi og helse
(Conference object; Konferansebidrag, 2010-09-02)
Physicians Interrupted by Mobile Devices in Hospitals: Understanding the Interaction Between Devices, Roles, and Duties
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
A common denominator of modern hospitals is a variety of communication problems. In particular, interruptions from mobile communication devices are a cause of great concern for many physicians.
Objective: To characterize how interruptions from mobile devices disturb physicians in their daily work. The gathered knowledge will be subsequently used as input for the design and development of a ...
Secure and scalable statistical computation of questionnaire data in R
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-12)
Collecting data via a questionnaire and analyzing them while preserving respondents' privacy may increase the number of respondents and the truthfulness of their responses. It may also reduce the systematic differences between respondents and non-respondents. In this paper, we propose a privacy- preserving method for collecting and analyzing survey responses using secure multi-party computation. The ...