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  • A. Alkhamisi, Mahdi, et al. (författare)
  • A Monte Carlo Study of Recent Ridge Parameters
  • 2007
  • Ingår i: Communications in statistics. Simulation and computation. - 0361-0918. ; 36:3, s. 535-547
  • Tidskriftsartikel (refereegranskat)
  • A. Alkhamisi, Mahdi, et al. (författare)
  • Developing Ridge Parameters for SUR Model
  • 2008
  • Ingår i: Communication in Statistics, Theory and Methods. ; 37:4, s. 544-564
  • Tidskriftsartikel (populärvet., debatt m.m.)
  • A Asif, Farazee M, 1980-, et al. (författare)
  • Performance analysis of the closed loop supply chain
  • 2012
  • Ingår i: Journal of Remanufacturing. - Germany. - 2210-4690. ; 2:4
  • Tidskriftsartikel (refereegranskat)abstract
    • PurposeThe question of resource scarcity and emerging pressure of environmental legislations has brought a new challenge for the manufacturing industry. On the one hand, there is a huge population that demands a large quantity of commodities; on the other hand, these demands have to be met by minimum resources and pollution. Resource conservative manufacturing (ResCoM) is a proposed holistic concept to manage these challenges. The successful implementation of this concept requires cross functional collaboration among relevant fields, and among them, closed loop supply chain is an essential domain. The paper aims to highlight some misconceptions concerning the closed loop supply chain, to discuss different challenges, and in addition, to show how the proposed concept deals with those challenges through analysis of key performance indicators (KPI).MethodsThe work presented in this paper is mainly based on the literature review. The analysis of performance of the closed loop supply chain is done using system dynamics, and the Stella software has been used to do the simulation. Findings The results of the simulation depict that in ResCoM; the performance of the closed loop supply chain is much enhanced in terms of supply, demand, and other uncertainties involved. The results may particularly be interesting for industries involved in remanufacturing, researchers in the field of closed loop supply chain, and other relevant areas. Originality The paper presented a novel research concept called ResCoM which is supported by system dynamics models of the closed loop supply chain to demonstrate the behavior of KPI in the closed loop supply chain.
  • A Atlasov, Kirill, et al. (författare)
  • 1D photonic band formation and photon localization in finite-size photonic-crystal waveguides
  • 2010
  • Ingår i: OPTICS EXPRESS. - 1094-4087. ; 18:1, s. 117-122
  • Tidskriftsartikel (refereegranskat)abstract
    • A transition from discrete optical modes to 1D photonic bands is experimentally observed and numerically studied in planar photonic-crystal (PhC) L-N microcavities of length N. For increasing N the confined modes progressively acquire a well-defined momentum, eventually reconstructing the band dispersion of the corresponding waveguide. Furthermore, photon localization due to disorder is observed experimentally in the membrane PhCs using spatially resolved photoluminescence spectroscopy. Implications on single-photon sources and transfer lines based on quasi-1D PhC structures are discussed.
  • A. Costa, Nicole, 1988-, et al. (författare)
  • Implementing human centred design in the context of a graphical user interface redesign for ship manoeuvring
  • 2017
  • Ingår i: International journal of human-computer studies. - 1071-5819. ; 100, s. 55-65
  • Tidskriftsartikel (refereegranskat)abstract
    • Human Centred Design (HCD) has been well-established in industrial and interaction design since the 1990's. HCD has a significant role to play as maritime industries struggle to retain the best crews and decrease risk in terms of human and environmental safety. This case study describes a test of an HCD approach, conducted within the European Commission project Crew-centred Design and Operations of Ships and Ship Systems (CyClaDes) under its Seventh Framework Programme. The HCD case study was undertaken by a design team at a partner firm for the redesign of a bridge wing conning display (a ship manoeuvring system) in their full mission ship bridge simulator. This paper summarizes the findings from the case study and discusses them from the perspective of the challenges, benefits, and most effective ways to introduce and use HCD in firms in the maritime sector unfamiliar with the concept. The authors of this paper performed observations, interviews and focus groups at regular intervals, augmented with reports and a resource survey completed by the design team. The conclusions highlight the impact of industrial context and constraints on the application of the HCD approach, as well as the impact of who applies HCD, of how it is depicted in literature and perceived by HCDnovice teams.
  • A. Costa, Nicole, 1988-, et al. (författare)
  • Non‑technical communication factors at the Vessel Traffic Services
  • 2017
  • Ingår i: Cognition, Technology & Work. - 1435-5558.
  • Tidskriftsartikel (refereegranskat)abstract
    • This study done at the Vessel Traffic Services (VTS) explored how the VTS operators (VTSOs) communicated with ships and other actors in the maritime sociotechnical system and how decisions were made with regard to assisting traffic in maintaining safe passage in port areas, where most vessel movements are seen and accidents occur. The fieldwork was done during four independent visits to a VTS centre under the Swedish Maritime Authority, with a total sample of six VTSOs and one VTS instructor. The qualitative data were sorted and coded using a grounded theory approach. The data pointed at non-technical information processing and communication factors that play a role in decision-making and ultimately in safety. During protocol operations at the VTS, these factors influenced how VTSOs judged the skills of the vessels’ bridge teams, and how they approached them. This is a time where much effort is being put into upgrading technological systems, and these will have the power to change the ways in which the maritime network obtains and processes information, as well as how they can communicate with each other. The further development of technological systems, work protocols and training programmes can benefit from taking the soft aspects of communication and the needs of the operators and their tasks into account for the enhancement of safety.
  • A. Costa, Nicole, 1988-, et al. (författare)
  • Perceived success factors of participatory ergonomics in ship design
  • 2015
  • Ingår i: Occupational Ergonomics. - 1359-9364. ; 12:4, s. 141-150
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The more complex and perilous a sociotechnical system is, the more crucial it is to have users and other relevant stakeholder groups in focus throughout its design lifecycle. In the design and development of ships and ship systems, there has been resistance towards the integration of ergonomic principles through a human-centred approach as well as to involving the user. This inattention can result in an inadequate design, which may have negative repercussions on usability, ultimately threatening the safety of onboard operations, overall system performance and the well-being of the crew. OBJECTIVE: This study explores the perceived success factors of participatory ergonomics based on the standpoint of young seafarers. METHODS: Such is achieved by examining a focus group with cadets inspired by Grounded Theory approach. RESULTS: The findings reveal user participation as a designer’s essential contact with reality, provided that a set of pre-conditions that supports the success of participatory ergonomics can be fulfilled: involving the right users and filling in the gap between end-user needs and ship-owner requirements. The consequent success factors are described at a usability level, an intrinsic level for the end-users, and ultimately at the level of increased safety and efficiency. CONCLUSIONS: User input may not only affect design as an outcome, it may also influence the way participatory ergonomics is performed in the maritime sector.
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