Recent additions

  • A mixture frailty model for maintainability analysis of mechanical components: a case study 

    Zaki, Rezgar; Barabadi, Abbas; Garmabaki, Amir Hossein Soleiman; Nuri, Ali (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-07)
    Knowing the maintainability of a component or a system means that repair resource allocations, such as spare part procurement and maintenance training, can be planned and optimized more effectively. Repair data are often collected from multiple and distributed units in different operational conditions, which can introduce heterogeneity into the data. Part of such heterogeneity can be explained and ...
  • D8 flow model for pollutants dispersion: A case study at Bogdalen watershed between the Raudfjell and Kvitfjell wind farm, North of Norway 

    Bui, Minh Tuan; Lu, Jinmei (Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
    Investments in wind power are booming in Norway. Several wind power plants have been constructed to exploit the wind energy. However, construction of wind farms has potential impacts on the surrounding environment. Particularly, waste from construction site or activities of workers, leakage of oil and chemical would spread into the nearby waterbodies by runoff or infiltrating into ground. Hence, ...
  • The effect of temperature on the leaching of Cr, Cu, Fe, Ni and Zn from tailings, Ballangen deposit, Norway 

    Lu, Jinmei; Yuan, Fuqing; Leiviska, Tiina (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01)
    In this study, the effect of temperature on the leaching of Cr, Cu, Fe, Ni and Zn from oxidized tailings, Ballangen deposit, Norway, was investigated by a laboratory batch leaching experiment. The leaching was conducted at four different temperatures 5°C, 10°C, 15°C and 20°C and 2 precipitation rates of 8 mm/week and 20 mm/week. The leachates from six leaching cycles were collected, and the concentra- ...
  • Study on the effect of temperature on the leaching of contaminants from Ballangen Tailings Deposit, Norway-A statistical method 

    Yuan, Fuqing; Lu, Jinmei (Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
    Temperature is one important factor that affects the leaching of contaminants from tailings deposit. However, randomness issue due to the precision of the instrument, the variation of ambient temperature, the individual skill of the lab technician etc., is inevitable and will affect the results when we evaluate the dependence of two parameters. In this study, a statistical method was developed to ...
  • Leaders’ Influence Tactics for Safety: An Exploratory Study in the Maritime Context 

    Kim, Tae-Eun; Gausdal, Anne Haugen (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-05)
    A growing body of research has pointed out effective leadership as an important influencing factor for safety performance in various high-risk industrial contexts. However, limited systematic knowledge is available about how leaders can effectively persuade rule compliance, and stimulate actions and participation. Recognizing effective means of influence is of value for safety leadership development ...
  • Risk Assessment of Operation and Maintenance of Wind Turbines in the Arctic [poster] 

    Mustafa, Albara Mohamad Yazid Faisal; Barabadi, Abbas (Conference object; Konferansebidrag, 2019)
  • Auditing Industrial Safety Management: A Case Study 

    Sydnes, Are K.; Bjelle, Sondre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
    As industries are becoming increasingly self-regulatory, external auditing has become increasingly important to ensure that industrial practices are in line with regulations and the public good. This study asks if there is a fit between the industrial practices of safety management and external auditing. It concludes that while companies largely manage safety through operational-level experience and ...
  • Lessons learned from accident and near-accident experiences in traffic 

    Terum, Jens Andreas; Svartdal, Frode (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-17)
    The focus of this article is risky behavior in traffic. What do people learn from accidents and near-accidents? Experience with accidents may demand increased caution. However, near-accidents are inherently ambiguous: On the one hand, they signal that margins were good enough, inspiring increased risk-taking; on the other hand, they signal danger that could induce increased caution. To explore these ...
  • Use of simulator training to mitigate risks in arctic shipping operations 

    Røds, Johan-Fredrik; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06)
    Over the recent years, ship traffic in the polar areas has increased. There is reason to believe that this traffic, and especially the cruise traffic, will increase further as the ice retracts towards the poles. There is also reason to believe that with the continued focus and exposure of the Polar Region, the cruise tourism to the region will grow. The increased presence in the polar areas will ...
  • Optimization Study of Heat Pumps Using Refrigerant Blends – Ejector Versus Expansion Valve Systems 

    Brodal, Eivind; Eiksund, Oddmar (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-19)
    This article investigates tap water heating systems to highlight an ongoing debate. Some report that CO2-based transcritical heat pumps with an ejector have the best coefficient of performance (COP), while others report that blend-based refrigerant systems (without an ejector) are better. In the literature, however, these systems are only compared with conventional heat pump designs, and not against ...
  • Lessons learned from accident and near-accident experiences in traffic 

    Terum, Jens Andreas; Svartdal, Frode (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-17)
    The focus of this article is risky behavior in traffic. What do people learn from accidents and near-accidents? Experience with accidents may demand increased caution. However, near-accidents are inherently ambiguous: On the one hand, they signal that margins were good enough, inspiring increased risk-taking; on the other hand, they signal danger that could induce increased caution. To explore these ...
  • Airmanship - A qualitative approach 

    Nergård, Vegard (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-10)
    The purpose of this study was to investigate how pilots themselves characterize a good pilot and airmanship, and how safety is created by the practice of knowledge. The purpose of this study was to get the insiders’ understanding of the concept of airmanship. Results indicate that the formulation of the concept of airmanship is complex, and it is first and foremost comprised of the knowledge about ...
  • Learning from experience 

    Nergård, Vegard (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-14)
    The purpose of this study was to explore how pilots potentially learn from their and others‘ experience through post-flight debriefing. Through a case study of pilots who fly air ambulances, this article attempts to illustrate the importance of learning from experience (Bion 1962) among pilots in aviation.
  • The Distribution of Heavy Metals in the Sediment of Low Tidal Flat, Eastern Chongming Island, China 

    Lu, Jinmei; Yuan, Fuqing (Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
    The distribution of heavy metals in the tidal flat is of great significance on the estuary environment. This study aims to find the heavy metal distribution mechanism at low tidal flat in Yangtze Estuary, China. 4 sediment cores were collected at low tidal flat of eastern Chongming Island at four seasons spring, summer, autumn and winter. The concentrations of element Al, Cu, Cr, Fe, Mn, Pb, Rb, Zn, ...
  • Multiphysics Study of Forced Convection Conjugate Heat Transfer (CHT) Problem 

    Leyli, Amir Nadem; Moatamedi, Mojtaba; Alzahabi, Basem (Journal article; Peer reviewed, 2019)
    This paper presents a problem undergoing conjugate heat transfer (CHT). Conjugate heat transfer problems are common is domestic heating/cooling, industrial heat exchangers, cooling of electronics (e.g. PC fans). It is to be noted that in conjugate heat transfer problems, the convection part of the heat transfer is dominated.<p> In the given study, a hypothetical case is built where a heat source (a ...
  • Overcoming Barriers to Proactive Response in Slow-onset Disasters 

    Staupe-Delgado, Reidar (Research report; Forskningsrapport, 2019)
    Disasters differ markedly in their speed of manifestation, which in turn greatly affects how researchers as well as authorities interpret and respond to them. In theory, disasters with a gradual and creeping onset are easier to manage than sudden and unexpected ones. However, the unfortunate reality is that hazards with a slow-onset are often ignored, left smouldering in the background, while their ...
  • A study of the socioeconomic factors influencing migration in Russia 

    Wang, Li; Huang, Jixia; Cai, Hongyan; Liu, Hengzi; Lu, Jinmei; Yang, Linsheng (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-19)
    Russia has experienced population decline in years and the economic development in Russia is largely restricted by labor shortage, particularly for the Far North and East region. In order to explore the migration mechanisms, six socioeconomic factors were selected to explore the influences on the net migration. Data from the 82 regions covering four time periods (2000, 2005, 2010 and 2015) was ...
  • User Satisfaction in Augmented Reality-Based Training Using Microsoft HoloLens 

    Xue, Hui; Sharma, Puneet; Wild, Fridolin (Journal article; Peer reviewed, 2019-01-25)
    With the recent developments in augmented reality (AR) technologies comes an increased interest in the use of smart glasses for hands-on training. Whether this interest is turned into market success depends at the least on whether the interaction with smart AR glasses satisfies users, an aspect of AR use that so far has received little attention. <br>With this contribution, we seek to change this. ...
  • Unprecedented Vessel-Icing Climatology based on Spray-Icing Modelling and Reanalysis Data: A Risk-Based Decision-Making Input for Arctic Offshore Industries 

    Naseri, Masoud; Samuelsen, Eirik Mikal (Journal article; Peer reviewed, 2019-04-11)
    Marine icing is considered a major concern for vessels operating in the Arctic Ocean. Interaction between vessels and waves is the major source of sea spray that, under certain conditions, can lead to ice accretion on the vessels and thus create hazardous situations. Various models have been developed for the estimation of ice accretion rate using meteorological and oceanographic parameters. Various ...
  • Multivariate analysis of Co, Fe and Ni leaching from tailings following simulated temperature change 

    Fu, Shuai; Lu, Jinmei; Yuan, Fuqing (Journal article; Peer reviewed, 2018)
    A series of column leaching experiments were performed to understand the leaching behavior of Co, Fe and Ni in Ballangen mine tailings. Multivariate statistical approaches to evaluate potential risk variations in leachate quality and identifies temperature effects on their leaching behavior. Results from column leaching test indicated that the mobility of showed higher temperature may encourage ...

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