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norskArtikler, rapporter og annet (teknologi og sikkerhet): Nye registreringer
Viser treff 81-100 av 336
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Data-driven modeling of energy-exergy in marine engines by supervised ANNs based on fuel type and injection angle classification
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-16)The application of artificial neural networks with the involvement of a modified homogeneity factor to predict exergetic terms from combustive and/or mixing dynamics in a marine engine is considered in this study. This is a significant step since the mathematical formulation of exergy in combustion is complicated and even unconvincing due to the turbulent and highly nonlinear nature of the combustion ... -
The influence of different fuels and injection methods of RCCI and DCI in hybrid ICE-Battery vehicle performance
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-16)The incorporation of two recent technologies of using the dual-fuel reactivity controlled compression ignition (RCCI) combustion engine within the hybrid electric vehicle (HEV) is practiced to show how this combination can reduce the emission and enhance the thermal efficiency of the system. In particular, the heat transfers from the engine wall and the exhaust heat flow from the engine under ... -
Analysis of the impact of deploying thermal protective immersion suits on evacuation time for passenger ships operating in polar waters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-22)For passenger vessels operating in polar waters, the Polar Code requires that in case of possibility of immersion in polar waters, thermal protective immersion suits (TPIS) should be available for all passengers. Thus, international standards require that TPIS can be donned within 2 min and that walking speeds are reduced by no more than 25%. Clearlythese requirements are arbitrary and do not ... -
Life cycle emission and cost assessment for LNG-retrofitted vessels: the risk and sensitivity analyses under fuel property and load variations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-13)There are various energy efficiency and emission reduction regulations enforced by the national and international maritime authorities for the shipping industry to adopt greener technologies. In this light, LNG-fueled vessels can be a promising alternative for ocean going diesel operated ships. It will be more beneficial if the price of LNG is lower than diesel to make that an economically viable ... -
“Here, I will stay until I die”—exploring the relationship between place attachment, risk perception, and coping behavior in two small Norwegian communities
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-25)This empirical study explores the interplay between place attachment, risk perception, and coping behavior, within two small Norwegian communities exposed to flash flooding. Through a mixed-methods narrative approach, we found that most of our respondents exhibited positive attachment to their communities, aligning with previous studies in rural settings. Using a conceptual model of place attachment ... -
Enemy image? A comparative analysis of the Russian federation’s role and position in the leading national security documents of Estonia and the Czech Republic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-14)States are security-seekers vis-a-vis ‘significant others’ who are cast as enemies in the international system. Usually, the study of the enemy image is connected with relative equilibrium concerning power capabilities. Less attention was given to a situation of a decisive power imbalance. Thus, a question arises whether such a situation will lead to a uniform enemy image? Concomitantly, what is the ... -
From East to East: Reconceptualization of NATO’s Eastern Flank Engagement in the Middle East
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-06)The role of the North Atlantic Treaty Organization and its influence on the peace and conflict dynamic in the Middle East has always been a discussed and controversial issue. While the United States and the countries of the NATO Southern flank are active in the discussions on NATO engagement in the region, the perspectives of NATO Eastern flank countries is often forgotten. This work contributes to ... -
Arctic Heritage at Risk: Insights into How Remote Sensing, Robotics and Simulation Can Improve Risk Analysis and Enhance Safety
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-23)Increased and enhanced utilisation of remote sensing and robotics in the Arctic can further enhance cultural safety and well-being and reduce the risks posed to archaeologists, heritage workers and others in the field. In this preliminary scoping survey, the authors review the current use of these technologies and consider a range of related issues, from cultural safety to nefarious use by criminals. ... -
Kinematic motion models based vessel state estimation to support advanced ship predictors
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-14)Advanced ship predictors can generally be considered as a vital part of the decision-making process of autonomous ships in the future, where the information on vessel maneuvering behavior can be used as the source of information to estimate current vessel motions and predict future behavior precisely. As a result, the navigation safety of autonomous vessels can be improved. In this paper, vessel ... -
Effect of temperature on the leaching of heavy metals from nickel mine tailings in the arctic area, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023)The leaching of heavy metals from tailings deposit due to the oxidation of sulphidic tailings and formation of acidic leachate is considered a high risk to the surrounding environment. Temperature plays an important role in the leaching of heavy metals from tailings in changing acid-based environment, especially in the Arctic area. To investigate how the temperature variation affected metal release ... -
Factors influencing the time required to don thermal protective immersion suits correctly
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-10)The cold environment in polar regions introduces additional challenges when abandoning passenger vessels and offshore facilities. The International Maritime Organization Polar Code requires vessels operating in polar regions to be equipped with approved thermal protective immersion suits (TPIS) that can be donned unassisted within 120 s. As time is critical during an evacuation, quantifying the Net ... -
What makes an acute emergency? Temporal manifestation patterns and global health emergencies
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-09)In this article, we consider the role that onset patterns play in shaping how acute global events are taken to be, drawing on illustrative cases from the field of global health emergencies. We identify four temporal manifestation patterns that we argue display distinct political dynamics. First, an emergent onset pattern (e.g. the H1N1 health emergency), with political dynamics dominated by ... -
Against the Trend-An tentative Data Analysis Method using Classical Regression against Machine Learning Approach
(Journal article; Tidsskriftartikkel, 2019)The machine learning approach is a new hot topic in recent years that are widely used in different sections, including industries, economy, disaster prediction and politics. After decades’ of development, the available machine learning algorithms are numerous and diverse. Traditional methods such as regression, classical statistical methods, are unfortunately laid aside as non-mainstream. This paper ... -
Modern Army for Modern Times or Private Paramilitary? Polish Territorial Defense Force as a Benchmark Case in Conflict Evolution
(Journal article; Tidsskriftartikkel, 2023)The new Polish military branch, the Territorial Defense Force (TDF), has been described both as a defensive tool against Russian hybrid warfare and as a private paramilitary force of the incumbent Law and Justice Party. This paper examines the strategic, political, and military purposes of the Territorial Defense Force using two theoretical models. One is designed for analyzing units intended to ... -
Bracing for turmoil: temporalities of livelihood adaptation among informal workers in Facatativá, Colombia
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-19)his study considers temporal aspects of livelihood adaptation in times of turmoil by drawing on interviews with informal street vendors in Facatativá, Colombia. By engaging a ‘time stories’ perspective, this article aims to provide a better understanding of how livelihood responses to shocks emerge from (and are constrained by) individuals’ initial and changing assumptions about the continued ... -
Spray Icing on ONEGA Vessel- A Comparison of Liquid Water Content Expressions
(Journal article; Tidsskriftartikkel, 2022)The hazards associated with ice accretion primarily due to impinging freezing sea spray on ship structures are considered among serious safety concerns for ships operating in the colder regions. An accurate sea-spray icing-estimation model to evaluate the ice accumulation during operations in these regions can make marine operations safer. The accuracy of the present icing models for estimating icing ... -
Lean Production – One path to organizational Resilience?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-07)In this indepth singlecase study from a large international aerospace and defence company, we ask the following research question: In what ways does lean production influence organizational resilience? Our findings suggest that various lean practices, such as lean meetings, using lean tools and a lean productioninspired organizational culture promote the development of organizational capabilities ... -
The process of integrating risk management: usefulness, standardisation and adaptation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-25)In this paper we analyse how a municipality set out to integrate risk management throughout an organisation with more than 9000 employees in six divisions and over 100 sub-units. An objective was to ensure coherence in risk management related work conducted in various sub-units in the municipality. Being forerunners, those involved had to find their own way. We identify three focus areas of importance ... -
Vertical profiles of black carbon and nanoparticles pollutants measured by a tethered balloon in Longyearbyen (Svalbard islands)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-09)Airborne meteorological and aerosol measurements have been performed in Longyearbyen (Svalbard islands) in the summer of 2018, coupling an instrumental aerosol payload with a meteorological radiosonde deployed on a tethered balloon. More than 70 vertical profiles of aerosol and meteorological properties have been recorded up to a maximum altitude of 1.2 km. As a main result, the present work provides ... -
Safety challenges related to autonomous ships in mixed navigational environments
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-30)Digitalization and technological advancements have accelerated the development and emergence of autonomous and remotely controlled ships in the maritime transport sector. This type of vessels consists of highly intelligent and adaptive functionalities, equipped with a variety of external sensors and actuators to gain situation awareness, automated control and adaptive maneuvering for achieving more ...
