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An effective method for service components selection based on micro-canonical annealing considering dependability assurance

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Frontiers of Computer Science 2019年第2期13卷 264-279页

作者： Shichen ZOU Junyu LIN Huiqiang WANG hongwu lv Guangsheng FENG College of Computer Science and Technology Harbin Engineering University Harbin 150001 China Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China Department of Electrical and Computer Engineering University of Victoria Victoria V8W 3P6 Canada

Distributed virtualization changes the pattern of building software systems. However, it brings some problems on dependability assurance owing to the complex social relationships and interactions between service components. The best way to solve the problems in a distributed virtualized environment is dependable service components selection. Dependable service components selection can be modeled as finding a dependable service path, which is a multiconstrained optimal path problem. In this paper, a service components selection method that searches for the dependable service path in a distributed virtualized environment is proposed from the perspective of dependability assurance. The concept of Quality of Dependability is introduced to describe and constrain software system dependability during dynamic composition. Then, we model the dependable service components selection as a multiconstrained optimal path problem, and apply the Adaptive Bonus-Penalty Microcanonical Annealing algorithm to find the optimal dependable service path. The experimental results show that the proposed algorithm has high search success rate and quick converges.

关键词： service components selection dependability assurance distributed virtualization microcanonical annealing

Optimizing Utility of Cognitive Radio Ad Hoc Networks under the Energy and Retransmission Constraint

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China Communications 2014年第A1期11卷 148-155页

作者： FENG Guangsheng ZHAO Qian WANG Huiqiang lv hongwu Lin JUNYU MA Chunguang CollegeofComputerScienceandTechnology HarbinEngineeringUniversityHarbin150001China SchoolofComputerandInformationEngineering HarbinUniversityofCommerceHarbin150028China

In Cognitive radio ad hoc networks （CRAHNs）, the secondary users （SUs） or cognitive radio nodes （CRs） are always equipped with limited energy and have a high error probability of data transmission. To address this issue, we first describe the network utility under energy constraint as a max-min model, where the re-transmission strategy with network coding is employed. Additionally, the expression of retransmission probability is presented in terms of power and bit error rate （BER）. Moreover, since the max-min model is non-convex in both objective and constraints, we use a normal- form game to find a near-optimal solution. The simulation results show that the proposed approach could achieve a higher network utility than the compared approaches.

关键词： cognitive radio ad hoc networks retransmission probability

V2V Online Data Offloading Method Based on Vehicle Mobility

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国际计算机前沿大会会议论文集 2020年第1期 44-60页

作者： Xianlang Hu Dafang Zhang Shizhao Zhao Guangsheng Feng hongwu lv Jiangsu Automation Research Institute Lianyungang 222002China College of Computer Science and Technology Harbin Engineering UniversityHarbin 150001China

As people are accustomed to getting information in the vehicles,mobile data offloading through Vehicular Ad Hoc Networks(VANETs)becomes prevalent ***,the impacts caused by the vehicle mobility(such as the relative speed and direction between vehicles)have great effects on mobile data *** this paper,a V2V online data offloading method is proposed based on vehicle *** this mechanism,the network service process was divided into continuous and equal-sized time *** were transmitted in a multicast manner for the sake of *** data offloading problem was formalized to maximize the overall satisfaction of the vehicle *** each time slot,a genetic algorithm was used to solve the maximizing problem to obtain a mobile data offloading *** then,the performance of the algorithm was enhanced by improving the *** experiment results show that vehicle mobility has a great effect on mobile data offloading,and the mobile data offloading method proposed in the paper is effective.

关键词： Vehicular Ad Hoc Networks Mobile data offloading Vehicle mobility Multicast manner Genetic algorithm

An Energy Efficient Random Walk Based Expanding Ring Search Method for Wireless Networks

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国际计算机前沿大会会议论文集 2015年第1期 6-7页

作者： Huiqiang Wang Xiuxiu Wen Junyu Lin Guangsheng Feng hongwu lv College of Computer Science and Technology Harbin Engineering University Harbin150001China

Wireless networks generate large amount of data. It is important to design energy efficient data search method since power of wireless nodes is finite. Expanding Ring Search (ERS) is a data search technique exploring for targets progressively, which is widely used to locate destinations or information in wireless networks. The existing studies on improving the energy efficiency of ERS cannot work without positioning systems. In this paper, we combine the technique of random walk with ERS, and propose a random walk based expanding ring search method (RWERS) for large-scale wireless networks. RWERS can work without using positioning systems, and improve the energy efficiency of ERS by preventing each node from transmitting the same request more than once using the technique of random walk. We compare RWERS with the optimal ERS strategy and CERS in networks with various shapes of terrains. The simulation results show that RWERS decreases the energy cost by 50% without decreasing in success rate compared with ERS, and has twice the success rate of CERS when the network is sparse. RWERS can be applied to various shapes of terrains better compared with CERS.

关键词： wireless networks big data Expanding Ring Search random walk energy efficient

Near-Optimal Transmission Optimization of Cache-Based SVC Vehicle Video

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国际计算机前沿大会会议论文集 2020年第1期 341-353页

作者： Xianlang Hu He Dong Xiangrui Kong Ruibing Li Guangsheng Feng hongwu lv Jiangsu Automation Research Institute Lianyungang 222002China College of Computer Science and Technology Harbin Engineering UniversityHarbin 150080China

A problem of video streaming of scalable video coding(SVC)is studied in vehicular *** improve the performance of the video streaming services and alleviate the pressure on backhaul links,the small cell base stations(SBS)is proposed with caching ability to assist the content *** this paper,it introduced the problem of joint optimization of caching strategy and transmission path in SBS cache *** integer programming problem was formulated to maximize the average quality of *** order to obtain the globally optimal solution,the primal problem was first relaxed,then an adaptive algorithm was used based on the joint KKT condition,and the branch definition algorithm was *** simulations were performed to demonstrate the efficiency of our proposed caching strategy.

关键词： SVC Cache Transmission method Vehicle video

An Availability Evaluation Method of Web Services Using Improved Grey Correlation Analysis with Entropy Difference and Weight

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国际计算机前沿大会会议论文集 2015年第1期 87-89页

作者： Zhanbo He Huiqiang Wang Junyu Lin Guangsheng Feng hongwu lv Yibing Hu College of Computer Science and Technology Harbin Engineering University HarbinChina

Web services is one of the basic network services, whose availability evaluation is of great significance to the promotion of users’ experience. This paper focuses on the problem of availability evaluation of Web services and proposes a method for availability evaluation of Web services using improved grey correlation analysis with entropy difference and weight (EWGCA).This method is based on grey correlation analysis, and use entropy difference to illustrate the changes of availability, set weight to quantize availability requirements of different operations or transactions in services. Through simulation experiment in high load scenarios for Web services, the experiment result shows that our method can realize hierarchical description and overall evaluation for availability of Web services accurately in the case of smaller test sample volumes or uncertain data even in the field of big data.

关键词： Web services availability evaluation big data grey correlation analysis entropy difference weight

A Distributed Strategy for Defensing Objective Function Attack in Large-scale Cognitive Networks

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国际计算机前沿大会会议论文集 2015年第1期 4-5页

作者： Guangsheng Feng Junyu Lin Huiqiang Wang Xiaoyu Zhao hongwu lv Qiao Zhao College of Computer Science and Technology Harbin Engineering UniversityHarbin150001China School of Computer and Information Engineering Harbin University of CommerceHarbin150028China

Most of existed strategies for defending OFA (Objective Function Attack)are centralized, only suitable for small-scale networks and stressed on the computation complexity and traffic load are usually neglected. In this paper, we pay more attentions on the OFA problem in large-scale cognitive networks, where the big data generated from the network must be considered and the traditional methods could be of helplessness. In this paper, we first analyze the interactive processes between attacker and defender in detail, and then a defense strategy for OFA based on differential game is proposed, abbreviated as DSDG. Secondly, the game saddle point and optimal defense strategy have proved to be existed simultaneously. Simulation results show that the proposed DSDG has a less influence on network performance and a lower rate of packet *** importantly, it can cope with the large range

关键词： cognitive networks objective function attack game model

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林木种苗在防护林建设中的重要性分析

现代农业研究 2019年第5期25卷 76-77页

作者：吕红武黑龙江省大庆市国营一心苗圃 166200

本文在有关学者的研究基础上,分析了防护林的概念以及建设防护林需要的技术分析,进而阐述了林木种苗在防护林建设中的重要作用,并提出了提高林木种苗培育的对策建议,以期能够促进我国防护林的不断发展建设与可持续发展。

关键词：林木种苗防护林建设重要性对策建议

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论企业融资资金流动分析

价值工程 2010年第32期29卷 43-44页

作者：吕红舞朱学义上海二十冶工程技术有限公司上海201900 中国矿业大学管理学院徐州221116

2008年5月22日,财政部、证监会、审计署、银监会、保监会五部门联合发布了《企业内部控制基本规范》,其中,一个重要内容就是"进行风险评估",并"运用相应的控制措施,将风险控制在可承受度之内"。对企业融资资金进行流动分析,就是分析企... 详细信息

2008年5月22日,财政部、证监会、审计署、银监会、保监会五部门联合发布了《企业内部控制基本规范》,其中,一个重要内容就是"进行风险评估",并"运用相应的控制措施,将风险控制在可承受度之内"。对企业融资资金进行流动分析,就是分析企业从那些途径取得资金,又将这些资金应用到那些方面,从而分析资金来源和资金应用的对应性,考察企业有没有财务风险,有没有经营风险,有没有偿债风险。为了实现这一目标,本文应用实例进行了说明。

关键词：融资资金流动分析资金应用资金来源财务风险经营风险偿债风险