Results 21 to 30 of about 25,794 (101)
Progressive Collapse Test of Ship Structures in Waves
Polish Maritime Research, 2018 The external loads and structural ultimate strength are two important aspects for the safety of ship hull girder. It may collapse in case the structural capacity is less than the external forces in extreme seas.
Pei Zhiyong, Xu Tao, Wu Weiguo
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Zhongguo Jianchuan Yanjiu, 2021 ObjectivesDue to the aging and illegal operation of crane equipment during hoisting operations on offshore platforms, dropped object accidents are the most prevalent type of accident, of which the dropping of slender rod-like objects such as drill ...
Xiufei WANG +4 more
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Mems Technology Quality Requirements as Applied to Multibeam Echosounder
Polish Maritime Research, 2018 Small, lightweight, power-efficient and low-cost microelectromechanical system (MEMS) inertial sensors and microcontrollers available in the market today help reduce the instability of Multibeam Sonars. Current MEMS inertial measurement units (IMUs) come
Bikonis Krzysztof, Demkowicz Jerzy
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Analysis on the overall model framework of ship steam power based on digital twin
Zhongguo Jianchuan Yanjiu, 2021 Objectives In order to realize the digitalization, networking and intellectualization of ship steam power systems, this paper puts forward an application system based on a digital twin model.
Yuanlong YANG +4 more
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Zhongguo Jianchuan Yanjiu, 2021 Objectives To meet the use requirements of a steam-powered system in different working conditions, it is necessary to study the design of the condensate water distribution and pipeline optimization.MethodsUsing the Flowmaster software, a simulation model
Fan ZHANG, Lianwei WU, Qiaoyu ZHANG
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ACM Transactions on Mathematical Software, 2018 Permutation problems are combinatorial optimization problems whose solutions are naturally codified as permutations. Due to their complexity, motivated principally by the factorial cardinality of the search space of solutions, they have been a recurrent ...
Ekhine Irurozki +4 more
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ESO based anti-disturbance target tracking control for twin-screw unmanned surface vehicle
Zhongguo Jianchuan Yanjiu, 2021 ObjectivesFocusing on the model uncertainties of unmanned surface vehicles (USVs) and unknown marine environmental disturbances, an anti-disturbance target-tracking control algorithm, based on extended state observer (ESO), is proposed for twin-screw ...
Wentao WU +5 more
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Research on Ship Hull Optimisation of High-Speed Ship Based on Viscous Flow/Potential Flow Theory
Polish Maritime Research, 2020 In order to quickly obtain practical ship forms with good resistance performance, based on the linear wave-making resistance theory, the optimal design method of ship forms with minimum total resistance is discussed by using the non-linear programming ...
Baoji Zhang
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The etiologies of non-CF bronchiectasis in childhood: a systematic review of 989 subjects
BMC Pediatrics, 2014 BackgroundWhile cystic fibrosis (CF) is the most common cause of bronchiectasis in childhood, non-CF bronchiectasis is associated with a wide variety of disorders.
Kelly S Brower +2 more
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Multi-Criteria Optimisation of Multi-Stage Positional Game of Vessels
Polish Maritime Research, 2020 The paper presents a mathematical model of a positional game of the safe control of a vessel in collision situations at sea, containing a description of control, state variables and state constraints as well as sets of acceptable ship strategies, as a ...
Lisowski Józef
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