Søk
Viser treff 1-10 av 28
Resilience Assessment: A Performance‐Based Importance Measure
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-12)
The resilience of a system can be considered as a function of its reliability and recoverability. Hence, for effective resilience management, the reliability and recoverability of all components which build up the system need to be identified. After that, their importance should be identified using an appropriate model for future resource allocation. The critical infrastructures are under dynamic ...
Human reliability assessment (HRA) in maintenance of production process: A case study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-04-02)
Human reliability makes a considerable contribution to the maintenance performance, safety, and cost-efficiency of any production process. To improve human reliability, the causes of human errors should be identified and the probability of human errors should be quantified. Analysis of human error is very case-specific; the context of the field should be taken into account. The aim of this study is ...
A methodology for identification of suitable drilling waste handling systems in the Arctic region
(Journal article; Peer reviewed; Tidsskriftartikkel, 2016)
As the demands to reduce the environmental impact of oil and gas operations increase in the Arctic region, the need to identify suitable waste handling systems become more essential. The aim of this paper is to propose a methodology for identifying suitable drilling waste handling system, by considering the distinctive operating condition of the Arctic region. The proposed methodology can help the ...
Bioremediation Treatment of Hydrocarbon-Contaminated Arctic Soils: Influencing Parameters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
Dynamic spare parts transportation model for Arctic production facility
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-14)
Timely delivery of the required spare parts plays an important role in meeting the
availability target and reducing the downtime of production facilities. Spare parts logistics is
affected in complex ways while operating in the Arctic, since the area is sparsely populated and
has insufficient infrastructure. It is also greatly affected by the distinctive operational
environment of the region, ...
Spare Part Transportation Management in High North
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
The demanding physical conditions of the Arctic, remote location, and uncertainty regarding
the travel time can both heighten the challenges related to transportation of spare part in the
region. Managing to get the appropriate path for transportation of spare parts for oil and gas
industries in the region, is one of the major and demanding tasks. In this paper we develop the
concept of ...
Non-Preemptive Open Shop Scheduling Considering Machine Availability
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
This paper considers a non-preemptive open shop scheduling problem (OSSP), in which machines are not available to process jobs on known periodic interval times resulted from periodic service repair, rest period, and so on. Asymmetric transportation time between machines is considered, which can be different from one job to another. The objective is to minimize the weighted mean completion time (WMCT). ...
A Goal Programming Approach for a Fuzzy Single-Source Capacitated Facility Location Problem
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019)
In this paper, we present a new mixed-integer linear goal programming (MILGP) model for a fuzzy single-source capacitated facility location problem (F-SSCFLP), in which demands are considered as triangular fuzzy values and capacity of facilities are fuzzy constraints. At first, the basic fuzzy model for the given problem is presented. Then, utilizing goal programming (GP) approach and fuzzy principals ...
A Holistic View of Health Infrastructure Resilience before and after COVID-19
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04)
Background: Large-scale events such as COVID-19 show that there are situations that can lead to huge stress on health
infrastructure systems (HIS). The pandemic reveals that it is very difficult to protect HIS from all kinds of possible hazards.
They can be unpredictable and spread rapidly; hence, it is hard to find an effective mitigation strategy to completely protect
society and its important ...
Observed and unobserved heterogeneity in failure data analysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-08)
In reality, failure data are often collected under diffract operational conditions (covariates), leading to heterogeneity among the data. Heterogeneity can be classified as observed and unobserved heterogeneity. Un-observed heterogeneity is the effect of unknown, unrecorded, or missing covariates. In most reliability studies, the effect of unobserved covariates is neglected. This may lead to inaccurate ...