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A Genetic Algorithm-Based Smart Antenna Technique for Anti-Collision of Multiple SAW ID-Tags

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Journal of Shanghai Jiaotong university(Science) 2007年第4期12卷 501-507页

作者：朱华韩韬吉小军施文康 dept.of Instruments Science and eng. Shanghai Jiaotong Univ.

In the radio frequency identification (RFID) system based on surface acoustic wave (SAW) technique, some tags often locate in the field of a transceiver at the same time. These tags produce simultaneous echo signals which "collide" when they arrive back at the transceiver, which leads to difficult identification. In this paper, smart antenna technique is presented to implement anti-collision in SAW RFID system. The direction of arrivals (DOAs) are used to denote the locations of tags, and genetic algorithm (GA) is suggested to find the optimal estimates of the DOAs in complex multimodal search spaces. Once the DOAs are obtained, the array weights are formed and the signals of tags are recovered to implement decoding. The experimental results show that the GA-based smart antenna technique works well in some occasions.

关键词： surface aconstic wave (SAW) tags radio frequency identification (RFID) smart antenna direction of arrival(DOA) genetic algorithm

A Blind Batch Encryption and Public Ledger-Based Protocol for Sharing Sensitive Data

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China Communications 2024年第1期21卷 310-322页

作者： Zhiwei Wang Nianhua Yang Qingqing Chen Wei Shen Zhiying Zhang School of computer Sciences Nanjing University of Posts and TelecommunicationsNanjing 210023China dept.of Intelligent Science and Information Law East China University of Political Science and LawShanghai 201620China Key Laboratory of computational Science and Application of Hainan Province Hainan Normal UniversityHaikou 571158China State Key Laboratory of Public Big Data Guizhou UniversityGuizhou 550025China Yunnan Key Laboratory of Blockchain Application Technology Yunnan Innovation Research Institute of Beijing University of Aeronautics and AstronauticsKunming 650233

For the goals of security and privacy preservation,we propose a blind batch encryption-and public ledger-based data sharing protocol that allows the integrity of sensitive data to be audited by a public ledger and allows privacy information to be *** owners can tightly manage their data with efficient revocation and only grant one-time adaptive access for the fulfillment of the *** prove that our protocol is semanticallly secure,blind,and secure against oblivious requesters and malicious file *** also provide security analysis in the context of four typical attacks.

关键词： blind batch encryption data sharing onetime adaptive access public ledger security and privacy

Scenario-based Participatory Design for Pervasive computing

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Journal of Shanghai Jiaotong university(Science) 2007年第2期12卷 204-210页

作者：刘志强丁鹏盛焕烨 dept.of computer Science and eng. Shanghai Jiaotong Univ.

Lots of pervasive computing researchers are working on how to realize the user-centered intelligent pervasive computing environment as Mark Weiser figured *** abstraction is the fundamentation of configuration for pervasive *** on task-oriented and descriptive properties of scenario,a scenario-based participatory design model was proposed to realize the task *** design model provided users and domain experts a useful mechanism to build the customized applications by separating system model into domain model and design *** this design model,domain experts,together with users,stakeholders focus on the logic rules(domain model)and programmers work on the implementation(design model).In order to formalize the model description,a human-agent interaction language to transform users' goals and domain rules into executable scenarios was also *** agent platform-describer used to link design and implementation of scenarios was developed to realize the configuration of applications according to different *** demand bus application showed the design process and the usability of this model.

关键词： pervasive computing scenario-based design participatory design configurable architecture

Logistic Regression for Evolving Data Streams Classification

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Journal of Shanghai Jiaotong university(Science) 2007年第2期12卷 197-203页

作者：尹志武黄上腾薛贵荣 dept.of computer Science and eng. Shanghai Jiaotong Univ.

Logistic regression is a fast classifier and can achieve higher accuracy on small training ***,it can work on both discrete and continuous attributes with nonlinear *** on these properties of logistic regression,this paper proposed an algorithm,called evolutionary logistical regression classifier(ELRClass),to solve the classification of evolving data *** algorithm applies logistic regression repeatedly to a sliding window of samples in order to update the existing classifier,to keep this classifier if its performance is deteriorated by the reason of bursting noise,or to construct a new classifier if a major concept drift is *** intensive experimental results demonstrate the effectiveness of this algorithm.

关键词： classification logistic regression data stream mining

Pattern Specialization Based on Partial Evaluation

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Journal of Shanghai Jiaotong university(Science) 2007年第5期12卷 633-638页

作者：毛宏燕黄林鹏李明禄 dept.of computer Science and eng. Shanghai Jiaotong Univ.

Design pattern enables software architecture generality and reusability, but which depresses the high performance. The pattern specialization was built on partial evaluation technology to reduce the overheads of design pattern. The design patterns were classified to extract the common features, and the corresponding pattern specializations were constructed. In the pattern specialization, the optimization opportunities were identified, and the specialization methods and conditions were described. The syntax of binding time analysis was defined, and the semantic depicted the invariant of usage context. The virtual invocation and dispatch were eliminated, which enhances the running efficiency. This pattern specialization is a high-level specialization for improving the performance of software aimed at design level that is orthogonal with the low-level code optimization.

关键词： design pattern pattern specialization partial evaluation specialization declaration binding time analysis

An Iterative Power Allocation Algorithm for Group-wise Space-Time Block Coding systems

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Journal of Shanghai Jiaotong university(Science) 2007年第4期12卷 481-485页

作者：张红伟张海滨宋文涛罗汉文刘兴钊 dept.of electronic eng. Shanghai Jiaotong Univ.

An iterative transmit power allocation (PA) algorithm was proposed for group-wise space-time block coding (G-STBC) systems with group-wise successive interference cancellation (GSIC) receivers. Group-wise interference suppression (GIS) filters are employed to separate each group's transmit signals from other interferences and noise. While the total power on all transmit symbols is constrained, all transmit PA coefficients are updated jointly according to the channel information at each iteration. Through PA, each detection symbol has the same post-detection signal to interference-and-noise ratio (SINR). The simulation results verify that the proposed PA algorithm converges at the equilibrium quickly after few iterations, and it achieves much lower bit error rates than the previous single symbol SIC PA and the fixed ratio PA algorithms for G-STBC systems with GSIC receivers .

关键词： power allocation (PA) group-wise space-time block coding (G-STBC) group-wise interference suppression (GIS) group-wise successive interference cancellation (GSIC)

Measuring system Regularity Using Fuzzy Similarity-based Approximate Entropy

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Journal of Shanghai Jiaotong university(Science) 2007年第5期12卷 623-627页

作者：陈伟婷王志中王刚 dept.of Biomedical eng. Shanghai Jiaotong Univ.

Approximate entropy (ApEn), a measure quantifying regularity and complexity, is believed to be an effective analyzing method of diverse settings that include both deterministic chaotic and stochastic processes, particularly operative in the analysis of physiological signals that involve relatively small amount of data. However, the similarity definition of vectors based on Heaviside function, of which the boundary is discontinuous and hard, may cause some problems in the validity and accuracy of ApEn. To overcome these problems, a modified ApEn based on fuzzy similarity (mApEn) was proposed. The performance on the MIX stochastic model, as well as those on the Logistic map and the Hennon map with noise, shows that the fuzzy similarity-based ApEn gets more satisfying results than the standard ApEn when characterizing systems with different regularities.

关键词： regularity approximate entropy (ApEn) fuzzy similarity physiological signal

赛德西港用于船舶减排的陆上可再生能源供电评估

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哈尔滨工程大学学报（英文版） 2024年第2期23卷 506-524页

作者： Merna Makram Ameen M.Bassam Adel A.Tawfik Waleed Yehia Naval Architecture and Marine eng.dept. Faculty of EngineeringPort Said UniversityPort Fuad 42526Egypt

Air pollution from shipping is becoming a critical issue,particularly in dense hub port *** proposed solution to minimize ship-based emissions at ports is the implementation of an Onshore Power Supply(OPS)*** allows ships to shut off their auxiliary engines and instead connect to the port *** there have been numerous studies conducted on ports in Europe and the United States,little research has been done on Egyptian ***,this paper aims to investigate the feasibility of implementing OPS at Port Said West Port in Egypt,aligning with Egypt Vision 2030’s goals for addressing climate *** research primarily focuses on analyzing data collected from calling ships to generate socio-economic and cost-effectiveness analyses of *** further enhance the environmental benefits of OPS,the paper proposes the use of solar energy as the OPS electricity *** findings of the study revealed that by relying on the national grid,emissions can be reduced by 28%.Moreover,it is predicted that this reduction could reach 100%if electricity generation is solely based on solar ***,the economic analysis demonstrates promising profitability,with a payback period of approximately two years.

关键词： Onshore power supply Port sustainability Shipping emissions inventory Solar energy Photovoltaic systems

Secure Authentication of WLAN Based on Elliptic Curve Cryptosystem

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Journal of Shanghai Jiaotong university(Science) 2007年第5期12卷 645-650页

作者：张龙军韩玮陈克非 dept.of computer Science and eng. Shanghai Jiaotong Univ.

The security of wireless local area network （***） becomes a bottleneck for its further applications. At present, many standard organizations and manufacturers of WLAN try to solve this problem. However, owing to the serious secure leak in IEEES02.11 standards, it is impossible to utterly solve the problem by simply adding some remedies. Based on the analysis on the security mechanism of WLAN and the latest techniques of *** security, a solution to WLAN security was presented. The solution makes preparation for the further combination of WLAN and Internet.

关键词： security wireless local area network (WLAN) elliptic curve cryptosystem