• 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 ...
    • Modeling Prognostic Factors in Resectable Pancreatic Adenocarcinomas 

      Botsis, Taxiarchis; Anagnostou, Valsamo K.; Hripcsak, George; Hartvigsen, Gunnar; Weng, Chunhua (Journal article; Tidsskriftartikkel; Peer reviewed, 2009)
    • Motivating Physical Activity for Individuals with Intellectual Disability through Indoor Bike Cycling and Exergaming 

      Martinez-Millana, Antonio; Michalsen, Henriette; Berg, Valter; Anke, Audny Gabriele Wagner; Martinez, Santiago; Muzny, Miroslav; Torrado, Juan Carlos; Gomez, Javier; Traver, Vicente; Jaccheri, Maria Letizia; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-02)
      People with intellectual disabilities have more sedentary lifestyles than the general population. Regular physical activity is of both medical and social importance, reducing the risk of cardiovascular disease and promoting functioning in everyday life. Exergames have been envisioned for promoting physical activity; however, most of them are not user-friendly for individuals with intellectual ...
    • A multiagent architecture for a distributed artificial intelligence application 

      Hartvigsen, Gunnar; Johansen, Dag (Research report; Forskningsrapport, 1990)
      Artificial intelligence applications are normally complex, demanding much computing power. This paper presents the multiagent architecture of StormCast, a distributed artificial intelligence application for severe storm forecasting. Important objectives as scaleability, robustness and reusability can be met by partitioning an ove rall task in subtasks, distribution of the subtasks on different nodes, ...
    • A Novel Approach for Continuous Health Status Monitoring and Automatic Detection of Infection Incidences in People With Type 1 Diabetes Using Machine Learning Algorithms (Part 2): A Personalized Digital Infectious Disease Detection Mechanism 

      Woldaregay, Ashenafi Zebene; Launonen, Ilkka Kalervo; Albers, David; Igual, Jorge; Årsand, Eirik; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-12)
      <i>Background</i>: Semisupervised and unsupervised anomaly detection methods have been widely used in various applications to detect anomalous objects from a given data set. Specifically, these methods are popular in the medical domain because of their suitability for applications where there is a lack of a sufficient data set for the other classes. Infection incidence often brings prolonged ...
    • Physical Activity With Tailored mHealth Support for Individuals With Intellectual Disabilities: Study Protocol for a Randomized Controlled Trial 

      Michalsen, Henriette; Wangberg, Silje C; Hartvigsen, Gunnar; Jaccheri, Maria Letizia; Muzny, Miroslav; Henriksen, André; Olsen, Monica Isabel; Thrane, Gyrd; Jahnsen, Reidun Birgitta; Pettersen, Gunn; Arntzen, Cathrine; Anke, Audny (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-29)
      <i>Background</i>: Individuals with intellectual disabilities (IDs) have lower levels of physical activity (PA) and greater barriers for participation in fitness activities compared with members of the general population. As increased PA has positive effects on cardiovascular and psychosocial health, it is exceedingly important to identify effective interventions for use in everyday settings. Mobile ...
    • 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 ...
    • Polar Vantage and Oura Physical Activity and Sleep Trackers: Validation and Comparison Study 

      Henriksen, André; Grimsgaard, Sameline; Hartvigsen, Gunnar; Hopstock, Laila Arnesdatter (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-27)
      Background: Consumer-based activity trackers are increasingly used in research, as they have the potential to promote increased physical activity and can be used for estimating physical activity among participants. However, the accuracy of newer consumer-based devices is mostly unknown, and validation studies are needed.<p> <p>Objective: The objective of this study was to compare the Polar Vantage ...
    • Preliminary Evaluation of a mHealth Coaching Conversational Artificial Intelligence for the Self-Care Management of People with Sickle-Cell Disease 

      Issom, David-Zacharie; Rochat, Jessica; Hartvigsen, Gunnar; Lovis, Christian (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
      Adherence to the complex set of recommended self-care practices among people with Sickle-Cell Disease (SCD) positively impacts health outcomes. However, few patients possess the required skills (i.e. disease-specific knowledge, adequate levels of self-efficacy). Consequently, adherence rates remain low and only 1% of patients are empowered enough to master the self-care practices. Health coaching ...
    • Prototyping a Diet Self-management System for People with Diabetes with Cultural Adaptable User Interface Design 

      Lee, Eunji; Årsand, Eirik; Choi, Yoon-Hee; Østengen, Geir; Sato, Keiichi; Hartvigsen, Gunnar (Chapter; Bokkapittel, 2014-08-22)
      Diet management is a critical part of diabetes selfmanagement. This project developed a working prototype application on Android-based mobile phone called SMART CARB that assists people with diabetes to self-manage their diet. The system particularly focused on monitoring carbohydrate intake in order to control their blood glucose levels. The project was positioned as a research extension to the ...
    • Satellite communication applied in a distributed application 

      Farstad, Werner; Johansen, Dag; Hartvigsen, Gunnar (Research report; Forskningsrapport, 1994-12)
      The paper describes the development of a prototype application for access to vital weather information from the Northern Atlantic sea region. The application gives meteorologists access to weather observations measured on sea vessels. Today the available information is very limited. On a daily basis, only 4-5 weather observations in the whole arctic sea-region are conducted. It is therefore suggested ...
    • Sixteen years of ICPC use in Norwegian primary care : looking through the facts 

      Bassøe, Carl-Fredrik; Botsis, Taxiarchis; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
    • Sorterius - An augmented reality app for encouraging outdoor physical activity for people with intellectual disabilities 

      Stellander, Magnus; Henriksen, André; Michalsen, Henriette; Anke, Audny; Ursin, Daniel; Martinez, Santiago; Pelagatti, Susanna; Sato, Keiichi; Haugland, Vebjørn; Johannessen, Erlend; Vidal, Juan Carlos Torrado; Hartvigsen, Gunnar (Chapter; Bokkapittel, 2022-08-22)
      Many with intellectual disabilities (ID) have difficulties adhering to current physical activity guidelines. The goal of this study was to develop a mobile app for assisting people with ID to be more physically active. We implemented a solution that combines the digital and real world using augmented reality (AR). Eight people working with people with ID (special education teachers, social workers, ...
    • The StormCast API. Specification of software interfaces in StormCast 2.1 

      Hartvigsen, Gunnar; Johansen, Dag; Farsi, Vahid; Farstad, Werner; Høgtun, Bente; Knudsen, Pål (Research report; Forskningsrapport, 1994-12)
      This report presents the software architecture in the StormCast meteorological workbench. The focus is on the software interfaces in StormCast version 2.1. For each layer in the architecture the functionality, the call structure, the interfaces, the event diagrams and test data are described. In addition, further works are discussed. The identication of software interfaces are based on the StormCast ...
    • StormVideo - digital video in the field of meteorology 

      Nybø, Olav; Hartvigsen, Gunnar; Johansen, Dag (Research report; Forskningsrapport, 1994-09)
      Visual observations constitute important input to different meteorological tasks. Previously, these observations were made by human observers and manually reported to the meteorologists. With the employment of video technology, this kind of observations can be automated. This paper presents one approach to visual weather observations. This involves software compression and transmission of digital ...
    • Succeeding with prolonged usage ofconsumer-based activity trackers in clinicalstudies: a mixed methods approach 

      Henriksen, André; Sand, Anne-Sofie; Deraas, Trygve Sigvart; Grimsgaard, Sameline; Hartvigsen, Gunnar; Hopstock, Laila Arnesdatter (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-27)
      <i>Background</i> - Lack of physical activity (PA) is a risk factor for death and non-communicable disease. Despite this, more than one fourth of adults worldwide do not follow PA guidelines. As part of a feasibility study to test a complex intervention for increasing PA, we included a consumer-based activity tracker (AT) as a tool to measure PA outcomes and to track heart rate during exercise ...
    • A systematic review of cluster detection mechanisms in syndromic surveillance: Towards developing a framework of cluster detection mechanisms for EDMON system 

      Yeng, Prosper Kandabongee; Woldaregay, Ashenafi Zebene; Solvoll, Terje; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      Time lag in detecting disease outbreaks remains a threat to global health security. Currently, our research team is working towards a system called EDMON, which uses blood glucose level and other supporting parameters from people with type 1 diabetes, as indicator variables for outbreak detection. Therefore, this paper aims to pinpoint the state of the art cluster detection mechanism towards developing ...
    • Søknad på professorat ved norske universiteter og høgskoler 

      Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel, 2015-05)
      En ansatt i vitenskapelig stilling skal utføre minst tre forskjellige oppgaver: forskning, undervisning og formidling. I tillegg kommer administrative gjøremål. Oppgavene trekker på ulike ferdigheter som alle bør dokumenteres i en søknad på en vitenskapelig stilling. Dessverre er det kun et mindretall som utformer sine søknader slik at totalkompetansen anskueliggjøres. En god søknad skal være komplett, ...
    • 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 ...
    • Telemedicine Services for the Arctic: A systematic review 

      Woldaregay, Ashenafi Zebene; Walderhaug, Ståle; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-28)
      Background: Telemedicine services have been successfully used in areas where there are adequate infrastructures such as reliable power and communication lines. However, despite the increasing number of merchants and seafarers, maritime and Arctic telemedicine have had limited success. This might be linked with various factors such as lack of good infrastructure, lack of trained onboard personnel, ...