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作者： LIAO Longtao YOU Kai CHEN Zhi Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China

In China,the development and application goals of Small Modular reactor(SMR) aim at electricity generation area,heat supply area,and seawater desalination area,*** main technical features of the SMR areas follows:integrated pressurized water reactor,reactor coolant pump and reactor pressure vessel connected by short pipe,steam generator sets in reactor pressure vessel,control rod drive mechanism(CRDM),pressure vessel,reactor internals,Once-Through Steam Generator(OTSG),and canned motor pump are all mature *** on the characteristic of the reactor and OTSG,the automatic control design of the SMR is discussed in this paper,and the simulation results are presented to illustrate the control scheme.

关键词： small modular reactor control system integrated pressurized water reactor once-through steam generator

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One-dimensional non-linear consolidation of soft foundation with upper crust with depth-dependent additional stress

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Materials Research Innovations 2015年 19卷 S9198-S9204页

作者： Zhang, J.H. Wang, Y.L. Cen, G.M. Jiang, W.W. Zheng, J.L. Wu, H.X. National Engineering Laboratory of Highway Maintenance Technology Changsha University of Science and Technology Changsha410114 China Texas Transportation Institute Texas A and M University System College StationTX77843 United States Guangdong Highway Design Institute Co. Ltd. Guangzhou510030 China Jiangxi Ganyue Expressway Co. Ltd. Nanchang330029 China

A model for one-dimensional non-linear consolidation of a soft foundation with an upper crust with depth-dependent additional stress was presented in this paper. The semi-analytical solution of this model with the boundary condition of the pervious top was derived, which was proved by comparing with the classical solution of a one-layered foundation under an instantaneous loading. Then, the effects of the depth-dependent additional stress on the consolidation of the double-layered foundation were revealed. The results show that the depth-dependent additional stress inside foundation has a great influence on the consolidation rate at the former stage and final settlement of the double-layered foundation. If the change of the additional stress along the depth is neglected, an underestimated consolidation rate and overestimated final settlement will be obtained. © W. S. Maney & Son Ltd 2015.

关键词： Foundations

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Research of service selection algorithm for net-centric simulation task community

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International Journal of Modeling, Simulation, and Scientific Computing 2014年第3期5卷 61-87页

作者： Liyang Sun Jianning Lin Zhenqi Ju Shaojie Mao Zhong Liu Di Lu School of Electronic and Optical Engineering Nanjing University of Science and Technology NJUST NanjingP.R.China Science and Technology on Information system Engineering Laboratory CETC 28th Nanjing P.R.China College of Design North Carolina State University Carolina US

Being a new-generation C4ISR system simulation method,the construction approach of net-centric simulation(NCS)is developing toward net-centric from the traditional approach of *** is mainly completed by the construction of the simulation task community(STC),the key to which being the dynamic integration of the various services spread in the network in order to form a new STC that meets the requirements of different *** this study,a simulation task community service selection algorithm(STCSSA)is *** main idea of this algorithm is to transform the construction of STC to the searching of optimal multi-objectives services with QoS global *** paper first introduces the QoS model of STC and evaluates the service composition process,then presents the detailed operating process of STCSSA and design of the dynamic inertia weight strategy of the algorithm,and also proposes an optional variation *** tests were performed on STCSSA with other particle swarm optimization *** was validated from the perspective of performance that the proposed algorithm has advantages in improving the rate of convergence and avoiding local optimum,and from the perspective of practical application STCSSA also demonstrated feasibility in the construction of large-scale NCS task community.

关键词： Net-centric simulation simulation task community service selection particle swarm optimization dynamic inertia weight optional variation

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design of words similarity based message router in enterprise service bus

Design of words similarity based message router in enterpris...

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2014 International Conference on Computer, Intelligent Computing and Education technology, CICET 2014

作者： Sui, X. Liu, C.Y. Li, J.S. Han, H.B. Henan Key Laboratory for Machinery Design and Transmission System Luoyang Henan China School of Mechatronics Engineering Henan University of Science and Technology Luoyang Henan China

ISBN: (纸本)9781138026391

In order to change the poor adaptability and low efficiency of the message router in enterprise service bus, this paper proposed a natural language processing based semantic-level message routing algorithm and design an intelligent message router which is suitable for large-scale business integration. The designed message router is designed to imply high-efficient, dynamic and intelligent message routing and improve the ability of service integration bus by expanding its adaptation and reducing the cost of maintenance of business collaboration. © 2014 Taylor & Francis Group, London, UK.

关键词： Semantics

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Vibration-modal analysis model for multi-span pipeline with different support conditions

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Computer Modelling and New Technologies 2014年第5期18卷 7-13页

作者： Liu, Jun He, Xing Liu, Qingyou Naibin, Jiang Chen, Huang School of Civil Engineering and Architecture Southwest Petroleum University Chengdu China Modern Design and Simulation Lab for Oil and Gas Equipment's Southwest Petroleum University Chengdu China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

Vibration characteristics analysis is important in the design of multi-span pipeline with different support conditions. In order to analyze the natural frequency and the vibration modal of the multi-span pipeline, a matrix transfer method is proposed in this paper. With the multi-span pipeline divided into single-span pipes, the transmission formulas for the deflection, angle, bending and shear between two adjacent spans are deduced, in combination with the Krylov function solution of the free vibration equation for the single-span pipe, and the constraint condition between the two adjacent spans of the multi-span pipeline. According to the boundary conditions on the starting and ending spans, the natural frequency equation and the vibration modal function between two adjacent spans of the multi-span pipeline are presented. The FORTRAN program based on the above principle is written, and the natural vibration frequencies and the vibration modals of two typical multi-span pipelines are investigated and compared with the results from ABAQUS. It is shown that the model presented in this paper is efficient in the analysis of multi-span pipeline and has the advantages of high computational efficiency and convenience for engineering practice application.

关键词： Natural frequencies

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Study on flow induced vibration characteristics of wo inline tubes and two parallel tubes

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Hedongli Gongcheng/Nuclear Power Engineering 2014年第1期35卷 87-91页

作者： Feng, Zhipeng Zhang, Yixiong Zang, Fenggang Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu 610041 China

In order to investigate the fluid structure interaction problems occurring in tube bundles, a numerical model is presented. The unsteady three-dimensional Navier-Stokes equation and LES turbulence model are computed with finite volume approach on structured grids combined with the technique of dynamic mesh. The model presents a three dimensional fully coupled approach with solving the fluid flow and the structure vibration simultaneously, for the tube bundles in cross flows. The results show that, the presented model is validated with experimental data and compared with existing models in the literature. Trajectory of single tube is "8" shape at "locked in". The two parallel tubes oscillate in opposite phase and both have the same amplitude. For pitch higher than 1.5D, there is no mutual influence of the tubes and response is close to the case of single tube. The lift force and amplitude of downstream tube of two inline tubes are increasing as the pitch increases. The upstream tube is almost not influenced by the downstream one when the pitch is larger than 2D. The fluid force and response are close to the case of single tube.

关键词： Large eddy simulation

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Corrigendum to “Modelling opportunistic spectrum renting in mobile cellular networks” [J. Netw. Comput. Appl. 52 (2015) 129–138]

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Journal of Network and Computer Applications 2016年 73卷 98-98页

作者： Tien Van Do Nam H. Do Ádám Horváth Jinting Wang Division of Knowledge and System Engineering for ICT (KSE-ICT) Faculty of Information Technology Ton Duc Thang University Ho Chi Minh City Viet Nam Analysis Design and Development of ICT Systems (AddICT) Laboratory Budapest University of Technology and Economics H-1117 Magyar tudósok körútja 2 Budapest Hungary Faculty of Informatics University of Debrecen Egyetem tér 1 PO Box 12 4010 Debrecen Hungary Institute of Informatics and Economics University of West Hungary Bajcsy-Zsilinszky u. 9. Sopron Hungary Department of Mathematics School of Science Beijing Jiaotong University Beijing 100044 China

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Per Hop Data Encryption Protocol for Transmission of Motion Control Data Over Public Networks

Per Hop Data Encryption Protocol for Transmission of Motion ...

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International Workshop on Advanced Motion Control

作者： Rajitha Tennekoon Janaka Wijekoon Erwin Harahap Hiroaki Nishi Eiichi Saito Seiichiro Katsura Nishi Laboratory Graduate School of Science and Technology Keio University Japan Katsura Laboratory Graduate School of System Design Keio University Japan

ISBN: (纸本)9781479957637

Bilateral controllers are widely used vital technology to perform remote operations and telesurgeries. The nature of the bilateral controller enables control objects, which are geographically far from the operation location. Therefore, the control data has to travel through public networks. As a result, to maintain the effectiveness and the consistency of applications such as teleoperations and telesurgeries, faster data delivery and data integrity are essential. The Service-oriented Router (SoR) was introduced to maintain the rich information on the Internet and to achieve maximum benefit from networks. In particular, the security, privacy and integrity of bilateral communication are not discoursed in spite of its significance brought by its underlying skill information or personal vital information. An SoR can analyze all packet or network stream transactions on its interfaces and store them in high throughput databases. In this paper, we introduce a hop-by-hop routing protocol which provides hop-by-hop data encryption using functions of the SoR. This infrastructure can provide security, privacy and integrity by using these functions. Furthermore, we present the implementations of proposed system in the ns-3 simulator and the test result shows that in a given scenario, the protocol only takes a processing delay of 46.32 ps for the encryption and decryption processes per a packet.

关键词： Service-oriented Router Bilateral Controllers hop-by-hop routing motion control over networks ns-3

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Development of axial semi-active dynamic vibration absorbers based on magneto-rheological elastomers 21

Development of axial semi-active dynamic vibration absorbers...

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21st International Congress on Sound and Vibration 2014, ICSV 2014

作者： Yang, Zhirong Li, Qingyun Rao, Zhushi Qin, Chunyun Gong, Xinglong Institute of Vibration Shock and Noise State Key Laboratory of Mechanical System and Vibration Shanghai Jiaotong University Shanghai200240 China Marine Engineering Institute Jimei University Xiamen361021 China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Mechanics and Mechanical Engineering University of Science and Technology of China Hefei230027 China

ISBN: (纸本)9781634392389

Magneto-rheological elastomers (MREs) are a new kind of Magneto-rheological materials mainly composed of polymer rubber and micro-sized magnetizable iron particles. In this technical note, a shear-mode semi-active dynamic vibration absorber (SDVA) based on MREs is proposed and the dynamic design principle of an axial SDVA attached to ship shafting is studied. The material preparation of MREs and their properties under different magnetic fields are introduced. The structure of a single SDVA is designed. Furthermore, the natural frequencies of the single SDVA under different magnetic fields and temperatures are experimentally evaluated. It is found that the natural frequency of SDVA has a decreasing trend with the temperature increasing. However, it has an increasing trend with the excitation current increasing in the same temperature situation. The effect of temperature is more obvious than the excitation current.

关键词： Intelligent materials

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The freeform collimating lens designed for light transmission

The freeform collimating lens designed for light transmissio...

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International Conference on Advanced Robotics and Intelligent systems (ARIS)

作者： A. J. W. Whang K. C. Jhan C. C. Su J. W. Chen Photonics System Simulation and Design Laboratory National Taiwan University of Science and Technology Taipei Taiwan Department of Electro-Optical Engineering National Taiwan University of Science and Technology Taipei Taiwan Department of Electronic Engineering National Taiwan University of Science and Technology Taipei Taiwan

This paper explores the design of a collimating lens based on freeform method. With this freeform structure, the light can be propagated as nearly parallel light which allow the light be transmitted to a large distanc... 详细信息

关键词： Lenses Lighting Vectors Educational institutions Laboratories Renewable energy sources Optical fibers

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