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Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: The collision frequency function for aerosol particles has already been calculated for the free moleculemagnetic force, electric force and molecular forces, created by particles themselves, recalculated the collisionAttractive forces increase naturally the collision frequency, while repulsive forces decrease it.

Keywords： aerosol particles     collision frequency function     coagulation    

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The research of ship-bridge collision protection system for Taizhou Bridge

Shen Gang,Fu Yaohua,Jin Yunnlong

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 73-77

Abstract:

The risk of ship collision to the center tower located at the edge ofcombination of ship navigation planning, bridge parameters and characteristics of bridge foundation, the ship collisionThe safety of the bridge and effectiveness of the protection system under ship collision is studied by

Keywords： ship-bridge collision     ship-collision force     the numerical simulation of ship collision     pile supported    

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An Intelligent System for Navigation Collision Prevention

Hao Yanling,Liu Yuhong,Sun Feng,Sun Yao

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 48-53

Abstract:

The purpose of this thesis is to developing and exploiting an intelligent system for collision prevention, namely “Intelligent Collision Prevention Expert System for Navigation”(NICPES).KR, procedure KR and neural network KR, to represent and store all kinds of knowledge for navigation collisionFor-some problems in collision prevention region, the NICPES builds a set of models to solve them.These models comprise the models of judging collision risk, the model of determining collision prevention

Keywords： collision prevention     expert system     neural network     fuzzy technique     multi-target optimizing    

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Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 151-162 doi: 10.1007/s11465-020-0617-z

Abstract: based on small-angle approximation to improve the simulation model for shipborne helicopter landing collisionResults show that the proposed dynamic model can simulate the collision motion of helicopter landing

Keywords： shipborne helicopter     landing model     Lagrange equations     dynamics     validation    

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Controlling the contact levels of details for fast and precise haptic collision detection Article

A Ram CHOI, Sung Min KIM, Mee Young SUNG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 8,   Pages 1117-1130 doi: 10.1631/FITEE.1500498

Abstract: For accurate and stable haptic rendering, collision detection for interactive haptic applications hasdetails (CLOD), which can fit objects while maintaining the balance between high speed and precision of collisionOur method is composed mainly of two parts: bounding sphere formation and two-level collision detectionTwo-level collision detection has two stages as well: fast detection of spheres and precise detectionOnce a collision is probed, a more precise detection is executed by examining the distance between a

Keywords： Collision detection     Haptic rendering     Bounding sphere     Clustering     Contact levels of details (CLOD)    

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Using improved particle swarm optimization totune PID controllers in cooperative collision avoidance Article

Xing-chen WU, Gui-he QIN, Ming-hui SUN, He YU, Qian-yi XU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1385-1395 doi: 10.1631/FITEE.1601427

Abstract: The introduction of proportional-integral-derivative (PID) controllersinto cooperative collision avoidancecontrollers usingan improved particle swarm optimization (PSO) algorithm, and to bettermanipulate cooperative collision

Keywords： Cooperative collision avoidance system (CCAS)     Improved particle swarm optimization (PSO)     PID controller    

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Anti-collision monitoring based on detecting casing head vibration induced by drill movements

He Baosheng,Liu Gang,Wang Shuangping,Wen Min

Strategic Study of CAE 2011, Volume 13, Issue 5,   Pages 74-78

Abstract: justify;">Now encryption adjustment wells are getting widely used in offshore, and the risk of well collisionWell anti-collision is becoming more and more important.An anti-collision monitoring system based on detecting casing head vibration induced by drilling movementsIt also indicates that the anti-collision monitoring system for detecting casing head vibration is practicable

Keywords： encryption adjustment well     anti-collision     risk well     vibration signal     time domain analysis     frequency    

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Dynamic response of precast segmental bridge columns under heavy truck impact

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 327-349 doi: 10.1007/s11709-023-0911-z

Abstract: simulation results demonstrated that the engine and cargo caused two major peak impact forces during collision

Keywords： precast segmental bridge columns     heavy truck     collision     dynamic response    

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Probabilistic model for vessel-bridge collisions in the Three Gorges Reservoir

Bo GENG , Hong WANG , Junjie WANG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 279-285 doi: 10.1007/s11709-009-0044-z

Abstract: Three Gorges Reservoir, and an analysis of the geometric probabilistic model of transiting vessels in collision

Keywords： vessel-bridge collision     probabilistic model     parameter statistics    

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Challenge and Innovation in Sutong Bridge Foundation Proje ct

You Qingzhong,Dong Xuewu,Wu Shouchang

Strategic Study of CAE 2007, Volume 9, Issue 6,   Pages 22-26

Abstract: establish a construction platform for Sutong Bridge' s super-large and deep-pile groups ; Permanent collisionfacilities consisting of collision structure and 5 000 ton steel cofferdam which is lowered as a whole

Keywords： Sutong Bridge     construction platform     steel cofferdam     collision structure     lowering as awhole     permanent    

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A novel motion coordination method for variable-sized multi-mobile robots Research Article

Zichao XING, Xingkai WANG, Shuo WANG, Weimin WU, Ruifen HU,zcxing@zju.edu.cn,wmwu@iipc.zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4,   Pages 521-535 doi: 10.1631/FITEE.2200160

Abstract: s (MMRSs) are widely used for transportation in industrial scenes such as manufacturing and warehousing. In an MMRS, is important as collisions and deadlocks may lead to losses or system stagnation. However, in some scenarios, robot sizes are different when loaded and unloaded, which means that the robots are variable-sized, making more difficult. The methods based on zone control need to first divide the environment into disjoint zones, and then allocate the zones statically or dynamically for . The zone-control-based methods are not accurate enough for variable-sized multi-mobile robots and reduce the efficiency of the system. This paper describes a method based on , which can dynamically avoid collisions and deadlocks according to the roadmap structure and the real-time paths of robots. Dynamic features make this method directly applicable to various scenarios, instead of dividing a roadmap into disjoint zones. The proposed method has been applied to many industrial projects, and this study is based on some manufacturing projects for experiments. Theoretical analysis and experimental results show that the proposed algorithm is effective and efficient.

Keywords： Multi-mobile robot system     Collision avoidance     Deadlock avoidance     Glued nodes     Motion coordination    

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Quadrupole-Linear Ion Trap Tandem Mass Spectrometry System for Clinical Biomarker Analysis Article

Xiang Fang, Jie Xie, Shiying Chu, You Jiang, Yuting An, Chang Li, Xiaoyun Gong, Rui Zhai, Zejian Huang, Chunling Qiu, Xinhua Dai

Engineering 2022, Volume 16, Issue 9,   Pages 56-64 doi: 10.1016/j.eng.2020.10.021

Abstract: The dimensionless Mathieu parameter (q) value used in this study was 0.40 for collision-induced dissociation

Keywords： Linear ion trap     Quadrupole     Space charge effect Collision-induced dissociation     Biomarker    

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Title Author Date Type Operation

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article

The research of ship-bridge collision protection system for Taizhou Bridge

Shen Gang,Fu Yaohua,Jin Yunnlong

Journal Article

An Intelligent System for Navigation Collision Prevention

Hao Yanling,Liu Yuhong,Sun Feng,Sun Yao

Journal Article

Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Journal Article

Controlling the contact levels of details for fast and precise haptic collision detection

A Ram CHOI, Sung Min KIM, Mee Young SUNG

Journal Article

Using improved particle swarm optimization totune PID controllers in cooperative collision avoidance

Xing-chen WU, Gui-he QIN, Ming-hui SUN, He YU, Qian-yi XU

Journal Article

Anti-collision monitoring based on detecting casing head vibration induced by drill movements

He Baosheng,Liu Gang,Wang Shuangping,Wen Min

Journal Article

Dynamic response of precast segmental bridge columns under heavy truck impact

Journal Article

Probabilistic model for vessel-bridge collisions in the Three Gorges Reservoir

Bo GENG , Hong WANG , Junjie WANG ,

Journal Article

Challenge and Innovation in Sutong Bridge Foundation Proje ct

You Qingzhong,Dong Xuewu,Wu Shouchang

Journal Article

A novel motion coordination method for variable-sized multi-mobile robots

Zichao XING, Xingkai WANG, Shuo WANG, Weimin WU, Ruifen HU,zcxing@zju.edu.cn,wmwu@iipc.zju.edu.cn

Journal Article

Lin Ou: Collision and Challenge between New Technology and Ship Construction (2019-9-18)

7 Nov 2021

Conference Videos

Quadrupole-Linear Ion Trap Tandem Mass Spectrometry System for Clinical Biomarker Analysis

Xiang Fang, Jie Xie, Shiying Chu, You Jiang, Yuting An, Chang Li, Xiaoyun Gong, Rui Zhai, Zejian Huang, Chunling Qiu, Xinhua Dai

Journal Article