Viser treff 501-520 av 640

    • Usage and perceptions of a mobile self-management application for people with type 2 diabetes: qualitative study of a five-month trial 

      Tatara, Naoe; Årsand, Eirik; Bratteteig, Tone; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
    • The Nornir run-time system for parallel programs using Kahn process networks on multi-core machines-a flexible alternative to MapReduce 

      Vrba, Zeljko; Halvorsen, Pål; Griwodz, Carsten; Beskow, Paul; Espeland, Håvard; Johansen, Dag (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Even though shared-memory concurrency is a paradigm frequently used for developing parallel applications on small- and middle-sized machines, experience has shown that it is hard to use. This is largely caused by synchronization primitives which are low-level, inherently non-deterministic, and, consequently, non-intuitive to use. In this paper, we present the Nornir run-time system. Nornir is ...
    • Functional Knowledge Transfer for High-accuracy Prediction of Under-studied Biological Processes 

      Park, Christopher Y.; Wong, Aaron K.; Greene, Casey S.; Rowland, Jessica; Guan, Yuanfang; Bongo, Lars Ailo; Burdine, Rebecca D.; Troyanskaya, Olga (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      A key challenge in genetics is identifying the functional roles of genes in pathways. Numerous functional genomics techniques (e.g. machine learning) that predict protein function have been developed to address this question. These methods generally build from existing annotations of genes to pathways and thus are often unable to identify additional genes participating in processes that are not ...
    • Model-driven diabetes care: study protocol for a randomized controlled trial 

      Skrøvseth, Stein Olav; Årsand, Eirik; Godtliebsen, Fred; Joakimsen, Ragnar Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Background: People with type 1 diabetes who use electronic self-help tools register a large amount of information about their disease on their participating devices; however, this information is rarely utilized beyond the immediate investigation. We have developed a diabetes diary for mobile phones and a statistics-based feedback module, which we have named Diastat, to give data-driven feedback ...
    • Telehealth at UC Davis—A 20-Year Experience 

      Nesbitt, Thomas S; Dharmar, Madan; Katz-Bell, Jana; Hartvigsen, Gunnar; Marcin, James P. (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Telehealth at the University of California Health System began as a telefetal monitoring connection with a rural hospital in 1992 and evolved to become the Center for Health and Technology (CHT) in 2000. The Center supports the vision of the University of California Davis (UC Davis) Health System—a healthier world through bold innovation. The CHT focuses on the four pillars of the academic ...
    • DPC. The distributed personal computer 

      Bjørndalen, Karen E. Hough (Master thesis; Mastergradsoppgave, 2014-01-15)
      Nowadays people have many different personal devices, like laptops and tablets, that they use to access and process data. Very often it is desirable to access and process the same data on different devices without having to copy it from one device to another. Commercial cloud services provide good services for achieving this, but recent events, such as the Snowdon disclosures, have illustrated some ...
    • Mario. A system for iterative and interactive processing of biological data 

      Ernstsen, Martin (Master thesis; Mastergradsoppgave, 2013-11-15)
      This thesis address challenges in metagenomic data processing on clusters of computers; in particular the need for interactive response times during development, debugging and tuning of data processing pipelines. Typical metagenomics pipelines batch process data, and have execution times ranging from hours to months, making configuration and tuning time consuming and impractical. We have analyzed ...
    • Omni-Kernel: An Operating System Architecture for Pervasive Monitoring and Scheduling 

      Kvalnes, Åge; Johansen, Dag; Renesse, Robbert van; Schneider, Fred B.; Valvåg, Steffen (Research report; Forskningsrapport, 2013)
      Clouds commonly employ virtual machine technology to leverage and efficiently utilize computational resources in data centers. The workloads encapsulated by virtual machines contend for the resources of their hosting machines, and interference from resource sharing can cause unpredictable performance. Despite the use of virtual machine technology, the role of the operating system as an arbiter of ...
    • DeltaTree: A Practical Locality-aware Concurrent Search Tree 

      Umar, Ibrahim; Anshus, Otto; Ha, Hoai Phuong (Research report; Forskningsrapport, 2013)
      As other fundamental programming abstractions in energy-e cient computing, search trees are expected to support both high parallelism and data locality. However, existing highly-concurrent search trees such as red-black trees and AVL trees do not consider data locality while existing locality-aware search trees such as those based on the van Emde Boas layout (vEB-based trees), poorly support ...
    • Physicians Interrupted by Mobile Devices in Hospitals: Understanding the Interaction Between Devices, Roles, and Duties 

      Solvoll, Terje; Scholl, Jeremiah; Hartvigsen, Gunnar (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 ...
    • Ruoksat. A system for capturing, persisting and presenting the digital footprint of soccer knowledge and expertise 

      Sørensen, Kim-Edgar (Master thesis; Mastergradsoppgave, 2013-06-01)
      There are currently over 27 000 registered soccer teams in Norway. However, even with mandatory coaching licenses, there are still a vast variety of approaches to how training sessions should be planned and executed. Even in top-level professional soccer organizations, the planning of exercises involves a considerable amount of manual labor. The most common approaches include using old-fashioned pen ...
    • Feature Detector: a support system for tracking satellite detected dynamic and permanent features 

      Jacobsen, Joakim (Master thesis; Mastergradsoppgave, 2013-05-15)
      Even with today's technologies many tasks relies on humans to be completed correctly. Engineers must monitor steps in large chains of operations, and verify the results before the next process is allowed to continue. In many such systems, a lot of useful data passes by without ever been stored for efficient future usage. Even though some operations must be verified by an experienced human eye, ...
    • A Video storage management system for soccer analytics 

      Hansen, Roger Bruun Asp (Master thesis; Mastergradsoppgave, 2012-12-18)
      Video is dominating consumer internet traffic. Restless internet users expect smooth playback and low latency when watching video content and vendors risk losing customers if this cannot be provided. Distributed storage systems specialized for delivering video content and for handling the high traffic this lead to, have been developed over many years. This thesis look into building and deploying a ...
    • Muithu: Smaller Footprint, Potentially Larger Imprint 

      Johansen, Dag; Stenhaug, Magnus; Hansen, Roger Bruun Asp; Christensen, Agnar; Høgmo, Per-Mathias (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 ...
    • HealthTrust: A Social Network Approach for Retrieving Online Health Videos 

      Fernandez-Luque, Luis; Karlsen, Randi; Melton, Genevieve B (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 ...
    • Improving Diabetes Care for Young People With Type 1 Diabetes Through Visual Learning on Mobile Phones: Mixed-Methods Study 

      Frøisland, Dag Helge; Årsand, Eirik; Skårderud, Finn (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: ...
    • Pro-Anorexia and Pro-Recovery Photo Sharing: A Tale of Two Warring Tribes 

      Yom-Tov, Elad; Fernandez Luque, Luis; Weber, Ingmar; Crain, Steven P. (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 ...
    • IMP: a multi-species functional genomics portal for integration, visualization and prediction of protein functions and networks 

      Wong, Aaron K.; Park, Christopher Y.; Greene, Casey S.; Bongo, Lars Ailo; Guan, Yuanfang; Troyanskaya, Olga (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 ...
    • Experimental Fault-Tolerant Synchronization for Reliable Computation on Graphics Processors 

      Hagen, Tor-Magne Stien; Ha, Hoai Phuong; Anshus, Otto (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 ...
    • Mobile Phone-Based Pattern Recognition and Data Analysis for Patients with Type 1 Diabetes 

      Skrøvseth, Stein Olav; Årsand, Eirik; Godtliebsen, F.; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Persons with type 1 diabetes who use electronic self-help tools, most commonly blood glucose meters, record a large amount of data about their personal condition. Mobile phones are powerful and ubiquitous computers that have a potential for data analysis, and the purpose of this study is to explore how self-gathered data can help users improve their blood glucose management. Thirty patients with ...