• Keeping Connected When the Mobile Social Network Goes Offline 

      Sigholt, Øystein Løkken; Tola, Besmir; Jiang, Yuming (Journal article; Peer reviewed, 2019)
      WiFi Direct is an embedded technology in a vast majority of smartphone devices running the Android operating system. As a result, it represents a promising technology that can be exploited in re-establishing connectivity ...
    • Keeping one step ahead: A qualitative study among Norwegian health-care providers in hospitals involved in care coordination for patients with complex needs 

      Høyem, Audhild; Gammon, Barbara Deede; Berntsen, Gro Karine Rosvold; Steinsbekk, Aslak (Journal article; Peer reviewed, 2018)
      ntroduction Various efforts aim to enhance continuity of care for patients with long-term health-care needs. Since 2012, Norwegian hospitals are mandated to appoint individual care coordinators for patients with complex ...
    • Keeping Systems at Work: Electricity Infrastructure from Control Rooms to Household Practices 

      Silvast, Antti; Virtanen, Mikko J. (Journal article; Peer reviewed, 2014)
      This article discusses the reliability of electricity supply and the management of its uncertainties from a systems theoretical point of view. We begin by outlining recent Science and Technology Studies (STS) literature ...
    • Keeping the human element to secure autonomous shipping operations 

      Meland, Per Håkon; Nesheim, Dag Atle; Rødseth, Ørnulf Jan (Peer reviewed; Journal article, 2023)
      Autonomous shipping operations are becoming economically and technically feasible, but this development also requires new human roles and responsibilities onshore for managing cyber events. The goal of this paper is to ...
    • Kelp and seaweed feeding by High-Arctic wild reindeer under extreme winter conditions 

      Hansen, Brage Bremset; Aanes, Ronny (Journal article; Peer reviewed, 2012)
      One challenge in current Arctic ecological research is to understand and predict how wildlife may respond to increased frequencies of “extreme” weather events. Heavy rain-on-snow (ROS) is one such extreme phenomenon ...
    • Kennfeld und Leistungsanalyse einer zweistufigen Turbokompressor-Brüdenverdichtung 

      Bantle, Michael; Schlemminger, Christian; Ahrens, Marcel Ulrich; Evenmo, Kjetil (Chapter, 2018)
      Die mechanische Brüdenverdichtung ist eine Spezialform der Wärmepumpentechnologie. Überschüssiger Dampf aus industriellen Prozessen (R718) wird verdichtet und die Kondensationswärme genutzt um den Prozess zu hei-zen. ...
    • Kernel regression on graphs in random Fourier features space 

      Elias, Vitor; Gogineni, Vinay Chakravarthi; Martins, Wallace; Werner, Stefan (Chapter, 2021)
      This work proposes an efficient batch-based implementation for kernel regression on graphs (KRG) using random Fourier features (RFF) and a low-complexity online implementation. Kernel regression has proven to be an efficient ...
    • Kernel Regression over Graphs using Random Fourier Features 

      Meireles Elias, Vitor Rosa; Gogineni, Vinay Chakravarthi; Martins, Wallace; Werner, Stefan (Peer reviewed; Journal article, 2022)
      This paper proposes efficient batch-based and online strategies for kernel regression over graphs (KRG). The proposed algorithms do not require the input signal to be a graph signal, whereas the target signal is defined ...
    • Kerr nonlinear switching in a hybrid silica-silicon microspherical resonator 

      Suhailin, Fariza; Healy, N; Franz, Y; Sumetsky, Misha; Ballato, John; Dibbs, Andrew; Gibson, Ursula; Peacock, Anna (Journal article; Peer reviewed, 2015)
      A hybrid silicon-core, silica-clad microspherical resonator has been fabricated from the semiconductor core fiber platform. Linear and nonlinear characterization of the resonator properties have shown it to exhibit ...
    • Kerr-Lens Mode-locked Cr:ZnS Laser 

      Sorokin, Evgeni; Tolstik, Nikolai; Sorokina, Irina T (Chapter, 2012)
      The first Kerr-Lens mode-locked Cr:ZnS laser generates the shortest and highest-energy mid-IR near transform-limited pulses of 69 fs duration at 550 mW output power. The 3.7 nJ pulses have 193 nm wide spectrum around 2.39 µm
    • Kerr-lens mode-locked Cr:ZnS laser 

      Tolstik, Nikolai; Sorokin, Evgeni; Sorokina, Irina T (Journal article; Peer reviewed, 2013)
      We report the soft-aperture Kerr-lens mode-locked Cr:ZnS laser, generating 550 mW of 69 fs nearly transform-limited pulses at 2.39 μm wavelength. The pulse energy reached 3.8 nJ at 145 MHz repetition rate, limited by the ...
    • Key challenges of climate change adaptation in the building sector 

      Kristl, Živa; Senior, Coline; Temeljotov Salaj, Alenka (Peer reviewed; Journal article, 2020)
      This paper addresses the main challenges in climate resilience of the building sector, including climate adaptation schemes, energy efficiency, and mitigation approaches. These challenges are evaluated with regard to the ...
    • Key Competencies for Critical Infrastructure Cyber-Security: a Systematic Literature Review 

      Chowdhury, Nabin; Gkioulos, Vasileios (Peer reviewed; Journal article, 2020)
      Purpose The purpose of this paper can be encapsulated in the following points: identify the research papers published on the topic: competencies and skills necessary for critical infrastructure (CI) cyber-security (CS) ...
    • Key Contributors to Lifetime Accumulated Fatigue Damage in an Offshore Wind Turbine Support Structure 

      Smilden, Emil; Bachynski, Erin Elizabeth; Sørensen, Asgeir Johan (Chapter; Peer reviewed, 2017)
      A simulation study is performed to identify the key contributors to lifetime accumulated fatigue damage in the support-structure of a 10 MW offshore wind turbine placed on a monopile foundation in 30 m water depth. The ...
    • Key Elements of and Materials Performance Targets for Highly Insulating Window Frames 

      Gustavsen, Arild; Grynning, Steinar; Arasteh, Dariush; Jelle, Bjørn Petter; Goudey, Howdy (Journal article; Peer reviewed, 2011)
      The thermal performance of windows is important for energy efficient buildings. Windows typically account for about 30–50 percent of the transmission losses though the building envelope, even if their area fraction of the ...
    • Key factors for child participation – an empowerment model for active inclusion in participatory processes 

      Olsen, Rita Karoline (Journal article; Peer reviewed, 2023)
      Child participation is advocated for in many contexts related to children, such as in education and health services, but also in everyday life settings. To facilitate children’s real opportunities for participation, it is ...
    • Key factors in facilitating collaborative research with children: A self-determination approach 

      Olsen, Rita Karoline; Stenseng, Frode; Kvello, Øyvind (Journal article; Peer reviewed, 2022)
      User involvement in research has gained increased attention in recent decades. However, there is a lack of studies involving children as co-researchers, and particularly uncertainty regarding how to facilitate this type ...
    • Key Factors Needed for Developing a Higher Education Cross-Campus Learning Environment in a Nordic Context 

      Nykvist, Shaun S.; de Caro-Barek, Veruska; Støckert, Robin; Lysne, Dag Atle (Peer reviewed; Journal article, 2021)
      The use of digital technologies and online tools to support both students and educators has become synonymous with transforming learning within Higher Education, particularly within post graduate courses. It can be argued ...
    • Key issues for enhancing citizen participation in co-constructing city futures 

      Smørdal, Ole; Wensaas, Kristina Ebbing; Lopes-Aparicio, Susana; Pettersen, Ida Nilstad; Hoelscher, Kristian (Journal article; Peer reviewed, 2016)
      Citizen participation is often a goal of urban development. However, in reality levels of actual participation are often low, limited to certain sets of stakeholders, and the collaboration between them often poor. In ...
    • Key performance indicators for wind farm operation and maintenance 

      Gonzalez, Elena; Nanos, Emmanouil; Seyr, Helene; Valldecabres, Laura; Yürüsen, Nurseda; Smolka, Ursula; Muskulus, Michael; Melero, Julio (Journal article; Peer reviewed, 2017)
      Key performance indicators (KPI) are tools for measuring the progress of a business towards its goals. Although wind energy is now a mature technology, there is a lack of well-defined best practices to asses the performance ...