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一个建立在JXTA平台上的对等网络游戏框架的设计

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计算机工程与应用 2004年第17期40卷 144-147,151页

作者：叶绿浙江科技学院计算机与电子工程学系杭州310012

论文针对网络中各种设备与服务管理的复杂性,提出一个采用对等网络计算,使得游戏系统不需要中心服务器的支持,或是中心服务器只需要很少的计算量的可行的办法,设计了一个建立在对等网络计算平台———JXTA平台之上的游戏框架,使各个设... 详细信息

论文针对网络中各种设备与服务管理的复杂性,提出一个采用对等网络计算,使得游戏系统不需要中心服务器的支持,或是中心服务器只需要很少的计算量的可行的办法,设计了一个建立在对等网络计算平台———JXTA平台之上的游戏框架,使各个设备之间能实现相互通信,能为游戏平台系统提供游戏所需要的各种JXTA服务层的服务,以及为不同类型的游戏提供一个统一的运行环境。

关键词：对等网络计算平台 JXTA 游戏框架

SYNTHESIS OF β-BIARYLACRYLFERROCENE WITH PALLADIUM（0）CATALYST

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SYNTHESIS OF β-BIARYLACRYLFERROCENE WITH PALLADIUM（0）CATA...

中国化学会第十三届金属有机化学学术讨论会

作者： SONG Qing-bao LIN Ru-xiang College of Chemical Engineering and Materials Science zhejiang university of technology Hangzhou 310014

＜正＞ Last decade, molecular-based second-order nonlinear optical （NLO） chromophores[1-5] have attracted much interest because of their potential applications in emerging opto-electronic technologies. These efforts have mainly focused on organic systems. More recently, organometallic molecules have been investigated as well[3-5]. In comparison to common organic molecules, they offer a large variety of novel structures. The possibility of high environmental stability, and diversity of turnable electronic behaviors by virtue of the

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Inpainting algorithm for Jacquared Image Based on Phase-Field Model

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Inpainting algorithm for Jacquared Image Based on Phase-Fiel...

2008 3rd International Conference on Intelligent System and Knowledge Engineering(ISKE 2008)

作者： Zhilin Feng 1 Jianwei Yin 2 Jianan Zhou 3 1.College of Zhijiang zhejiang university of technology Hangzhou 310024 China 2.State Key Laboratory of CAD & CG zhejiang university Hangzhou 310027 China 3.Department of Information and technology zhejiang Vocational College of Commerce Hangzhou 310053 China

Jacquard image inpainting is an interesting new research topic in pattern preprocessing for jacquard *** field model has been well acknowledged as an important method for image *** paper discussed the problem of jacquard image inpainting by approaching the phase field paradigm from a numerical approximation *** basic idea is to represent the damaged pattern of interest in implicit form,and fill-in the damaged parts with a system of geometric partial differential equations derived from phase-field *** novelty of our approach lies primarily in exploiting explicitly the constraint enforced by the numerical solving of the sequential evolving of phase-field *** experiments are carried out in order to validate and compare the algorithm both quantitatively and *** show the advantages of our algorithm and its readily application to jacquard texture.

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An Adaptive Controller of Discrete-time Systems with Unknown Control Direction

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An Adaptive Controller of Discrete-time Systems with Unknown...

第三十届中国控制会议

作者： YAN Weili,SUN Mingxuan College of Information Engineering,zhejiang university of technology,Hangzhou 310023,P.R.China

In this paper,a novel adaptive control scheme is proposed for a class of discrete-time nonlinear systems with unknown control *** using the discrete Nussbaum gain,the proposed scheme directly estimates the unknown control gain instead of its *** singularity of the control law is overcome by using the previous estimated control gain when the current one falls into a small neighborhood of *** proposed adaptive control,with using a modified projection algorithm, can guarantee boundedness of all the closed-loop signals and convergence of the tracking *** illustrative example is presented to verify effectiveness of the proposed scheme.

关键词： Adaptive Control Unknown Control Direction Discrete-time Systems

Investigating the Proper Permutants and Size of Permutation Index for High-Dimensional Metric Spaces

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Investigating the Proper Permutants and Size of Permutation ...

2011 International Conference on Future Information technology (ICFIT 2011)

作者： Ben Wang a Hongyan Chen b and Hong Huang c Department of Computer Science zhejiang university of technology Hangzhou China

In high-dimensional metric spaces, similarity search is extremely time-consuming. Approximate algorithm has been suggested as a viable way to overcome the high-dimensional indexing problem. In medium and high-dimensional metric spaces, the permutation index is one of the effective approximate algorithms. However, how to choose proper permutants is still a challenging problem. The authors of permutation index method only provide a random selection solution for it, but there is still no good answer to determine a proper parameter k which is the size of permutants. In this paper, above problems are solved in two parts respectively. Firstly, a proper permutant selection method is suggested to improve the accuracy of indexing. Secondly, an efficient approach is provided to determine the number of permutants in permutation index, which improves searching performance without reducing the accuracy. We also show empirical evidence that supports our techniques.

关键词： metric space indexing similarity search approximate algorithm permutant selection.

A NEW ONE-STEP BAND-LIMITED EXTRAPOLATION PROCEDURE USING EMPIRICAL ORTHOGONAL FUNCTIONS

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Journal of Electronics(China) 2006年第5期23卷 777-780页

作者： Weng Jianfeng School of Information and Electronic Engineering Zhejiang University of Science and Technology Hangzhou 310023 China

A one-step band-limited extrapolation procedure is systematically developed under an a priori assumption of bandwidth. The rationale of the proposed scheme is to expand the known signal segment based on a band-limited basis function set and then to generate a set of Empirical Orthogonal Functions (EOF’s) adaptively from the sample values of the band-limited function set. Simulation results indicate that, in addi- tion to the attractive adaptive feature, this scheme also appears to guarantee a smooth result for inexact data, thus suggesting the robustness of the proposed procedure.

关键词： Band-limited signal One-step extrapolation Empirical Orthogonal Functions (EOF's) Adaptive Robustness

A LOWER BOUND OF STABLE STATIONARY TRAJECTORIES

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Acta Mathematica Scientia 2007年第3期27卷 535-540页

作者： J.M. Soriano C. Ding Departamento de Andlisis Matemdtico Facultad de Matematicas Universidad de Sevilla Aptdo. 1160 Sevilla 41080 Spain Department of Applied Mathematics Zhejiang University of Technology Hangzhou 310032 China

It is proven that an autonomous system verifying some conditions has at least one stable stationary trajectory and it is also given a lower bound to the number of unstable stationary trajectorlies.

关键词： Autonomous system continuation methods trajectory nondegenerate critical point zero point stationary trajectory stable trajectory asymptotically stable Morse inequalities

A method using locality-sensitive hashing for large-scale content-based image retrieval

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A method using locality-sensitive hashing for large-scale co...

2009中国控制与决策会议

作者： WANG Weihong~1,WANG Song~1 1.Software College,zhejiang university of technology,Hangzhou 310023,China

＜正＞To develop a fast solution for indexing high-dimensional image contents,which is crucial to building large-scale CBIR systems,is one key challenge in content-based image retrieval（CBIR）.In this paper,we propose a scalable content-based image retrieval scheme using locality-sensitive hashing（LSH）,and conduct extensive evaluations on a large image testbed of a half million *** the best of our knowledge,there is less comprehensive study on large-scale CBIR evaluation with a half million *** empirical results show that our proposed solution is able to scale for hundreds of thousands of images,which is promising for building web-scale CBIR systems.

关键词： CBIR Large-scale Empirical LSH

基于修正Preston方程的气压砂轮加工特性

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浙江大学学报（工学版） 2013年第7期47卷 1299-1306页

作者：计时鸣曾晰金明生谭大鹏浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室浙江杭州310014

为了解决高硬度、高耐磨激光强化自由曲面难以高效光整的问题,提出软固结磨粒气压砂轮加工方法.通过高聚物黏结剂在充气柔性砂轮表面构成磨粒层,使每颗磨粒受力后可以局部微动,影响周边磨粒群的受力状况而发生群体效应,达到软性条件下... 详细信息

为了解决高硬度、高耐磨激光强化自由曲面难以高效光整的问题,提出软固结磨粒气压砂轮加工方法.通过高聚物黏结剂在充气柔性砂轮表面构成磨粒层,使每颗磨粒受力后可以局部微动,影响周边磨粒群的受力状况而发生群体效应,达到软性条件下的应力集中,形成高效切削.以拉宾诺维奇(Rabinoweizc)磨损理论为依据,引入硬度比例系数和表面硬度系数,结合磨粒粒度对材料去除的影响,给出修正系数.结合弹性力学理论,对柔性基体供力环境下的材料去除进行应力修正,给出修正的Preston方程,提出该方法材料去除的量化模型.建立砂轮表面磨粒群在任一接触状态下的速度计算公式,通过ANSYS仿真给出下压量与压力的关系谱图.修正系数经实验验证基本与理论分析相符,证明该方法可以降低材料去除的量化误差.根据不同磨粒粒度的实验对比,给出针对高硬度表面光整的工艺参照.

关键词：激光强化软固结磨粒气压砂轮修正的Preston方程