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5th International Conference on Logistics and Supply Chain Management, LSCM 2015

作者： Zhang, Fu-Xing Zhang, Tao Wang, Rui Zhang, Yan College of Information System and Management National University of Defense Technology Changsha China State Key Laboratory of High Performance Computing National University of Defense Technology Changsha China

ISBN: (纸本)9781510818071

Energy Local Area Network(ELAN) is the core component of the Energy Internet(EI), including wind power generation, energy storage equipment, electric vehicles and many kinds of intelligent loads. It can be used as a scheduling unit to accept EI layer control system. Complex structure, multiple correlation and strong coordination requirements have been the major obstacle to the realization of the accurate and timely optimization scheduling of ELAN. First of all, we talk about the composition of ELAN, physical structure and relationship between constitute factors. Secondly, Based on drawing the causality diagram and system flow chart, we built the SD model of ELAN. Thirdly, considering from the two aspects of structure and behavior model, we test and verify the model reliability and validity through the structure applicability test, structure consistent test, behavior applicability test and behavioral consistency test. Finally, based on the model correct test, we carried out the regular test and the policy simulation test, and the research conclusions of this paper are presented.

关键词： Economics

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Co-assembly of nanoparticles and block copolymers into hybrid micellar aggregates

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Recent Patents on Materials Science 2013年第1期6卷 40-58页

作者： Li, Weikun Wang, Jianying Liang, Ruijing Deng, Renhua Zhu, Jintao Key Laboratory of Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology No. 1037 Luoyu Road Wuhan Hubei 430074 China Hubei Key Laboratory of Materials Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China

In this review, we outline the most recent publications and patents focusing on hybrid micellar aggregates comprising nanoparticles (NPs) and block copolymers (BCPs) in the last decade, which have attracted much interest owing to their potential applications in the fields of optics, electronics, sensors, drug delivery and release, bioimaging, targeting, and catalysis. Among them, precise location and assembly of NPs in polymers are of great importance in realizing the formation of nanocomposites with high performances. BCPs assembly offers a simple and efficient route to direct and locate NPs in polymer matrix. First, we will outline different synthetic strategies for directing inorganic NPs into the micellar aggregates based on co-assembly of NPs and BCPs. We will then discuss principles and possible mechanisms for precisely regulating NPs in polymer microdomains of BCPs based on the experimental and theoretical results. Potential applications of the hybrid micellar aggregates will finally be discussed, followed by current and future developments of this emerging area. © 2013 Bentham Science Publishers.

关键词： Nanoparticles

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Reader activation scheduling in multi-reader RFID systems: A study of general case

Reader activation scheduling in multi-reader RFID systems: A...

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25th IEEE International Parallel and Distributed Processing Symposium, IPDPS 2011

作者： Tang, Shaojie Wang, Cheng Li, Xiang-Yang Jiang, Changjun Department of Computer Science Illinois Institute of Technology Chicago IL 60616 United States Department of Computer Science Tongji University Shanghai China Key Laboratory of Embedded System and Service Computing Ministry of Education Shanghai China

ISBN: (纸本)9780769543857

Radio frequency identification (RFID) is a technology where a reader device can "sense" the presence of a close by object by reading a tag device attached to the object. To guarantee the coverage quality, multiple RFID readers can be deployed in the given region. In this paper, we consider the problem of activation schedule for readers in a multi-reader environment. In particular, we try to design a schedule for readers to maximize the number of served tags per time-slot while avoiding various interferences. We first develop a centralized algorithm under the assumption that different readers may have different interference and interrogation radius. Next, we propose a novel algorithm which does not need any location information of the readers. Finally, we extend the previous algorithm in distributed manner in order to suit the case where no central entity exists. We conduct extensive simulations to study the performances of our proposed algorithm. And our evaluation results corroborate our theoretical analysis. © 2011 IEEE.

关键词： Graph theory

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LCW: A Lightweight Recommendation Framework for Non-profit Crowdfunding Projects 21

LCW: A Lightweight Recommendation Framework for Non-profit C...

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4th International Conference on Computer Science and Software Engineering, CSSE 2021

作者： Liu, Jinxin Xiao, Yingyuan Zheng, Wenguang Engineering Research Center of Learning-BasedIntelligent System Ministry of Education Tianjin University of Technology China Tianjin Key Laboratory OfIntelligence Computing and Novel Software Technology Tianjin University of Technology China

ISBN: (纸本)9781450390675

In recent years, crowdfunding platform has gradually emerged as a new economic model, and more and more people choose crowdfunding to obtain the initial funds needed by the project. However, with the increasing number of projects, it is difficult for sponsors to find suitable projects they want to invest in. Therefore, it is very important to build an efficient recommendation system on the crowdfunding platform. Different from previous crowdfunding recommendation systems designed to improve returns, this paper designs a lightweight recommendation framework LCW for non-profit crowdfunding platforms. A large number of experiments on real kiva data sets have proved the effectiveness of this method and it obtains the SOTA results. © 2021 ACM.

关键词： Recommender systems

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6th International Conference on Fuzzy systems and Knowledge Discovery, FSKD 2009

作者： Li, Wenjie Zhao, Yan Shen, Nan Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology 300191 Tianjin China Key Laboratory of Computer Vision and System Tianjin University of Technology Ministry of Education 300191 Tianjin China Nankai University 300071 Tianjin China

ISBN: (纸本)9780769537351

Ontology is an explicit specification of a conceptualization. With the development of semantic Web, there are more and more ontologies. How to achieve the reusing and sharing of knowledge between ontologies has become the key to the development of semantic Web. Based on the analysis of the current technologies, a computation method of parsing the feature of concept in the ontologies and making use of the semantic similarity measurement techniques is proposed in the paper, in order to find the same or similar concepts pairs among different ontologies and then can be used in the ontology mapping, which has been proved feasible by experiments. © 2009 IEEE.

关键词： Ontology

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Enhancement of oxygen evolution reaction activity and durability of Ba0.5Sr0.5Co0.8Fe0.2O3-δ by CO2 thermal treatment

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Journal of Materials Science & technology 2019年第6期35卷 1184-1191页

作者： Fengli Liang Ziqiong Yang Haipeng Deng Jaka Sunarso Lili Yang Junkui Mao College of Energy and Power Engineering.Jiangsu Province Key Laboratory of Aerospace Power System Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Research Centre for Sustainable Technologies Faculty of Engineering Computing and Science Swinburne University of Technology Jalan Simpang Tiga93350 Kuching Sarawak Malaysia

This work demonstrates that in situ formation of carbonate layer on the surface of Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF)obtained by exposure to CO2 during heating between 500℃ and 700℃ can provide enhanced oxygen evolution reaction(OER)performance and durability in an alkaline solution relative to the original *** temperatures,i.e., 500℃,600℃,and 700℃ were chosen to perform the CO2 thermal treatment,resulting into BSCF-500,BSCF-600,and BSCF-700 *** OER was enhanced in the order of BSCF-500< BSCF-700 < BSCF-600. BSCF-600 showed the best OER performance, i.e., a low overpotential of 0.36 V required to attain 10 mA cm^-2 current density as well as a mass activity of 74.14 Agcmcat-1 and a specific activity of 5.04 mA cmcat-2 at an overpotential of 0.4 V. The OER performance durability of BSCF-600 was highlighted by its ability to maintain a stable potential of around 1.61 V vs. RHE (RHE: reversible hydrogen electrode) when charged at a constant current density of 10 mA cm^-2 throughout the 800 min continuous chronopotentiometry test. The enhanced OER performance for BSCF-600 relative to the original BSCF is attributed to three factors:(i) higher electrochemically active surface area;(ii) faster charge transfer rate and higher electrical conductivity;and (iii) modified oxidation state of cobalt ions. The formation of thin carbonate layer in BSCF-600 appears to suppress the durability issue observed in BSCF.

关键词： Carbonate Electrocatalysis Oxygen evolution reaction Perovskite Water splitting

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Exploiting robustness in Petri net-based closed-loop systems to accommodate control specification changes

Exploiting robustness in Petri net-based closed-loop systems...

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2013 IEEE International Conference on Automation Science and Engineering, CASE 2013

作者： Li, Jun Zhou, Mengchu Dai, Xianzhong Key Laboratory of Measurement and Control of Complex Systems of Engineering China Ministry of Education Automation School of Southeast University Nanjing 210096 China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 201804 China

ISBN: (纸本)9781479915156

Supervisory control reconfiguration has been paid more attention due to its capacity of handling the uncertainties including resource failures, capability degradation, and task changes in discrete event systems. However, the robustness of closed-loop systems in response to some specification changes was not addressed in the prior studies. This paper presents a reconfiguration method based on Petri nets and integer programming for supervisory control of resource allocation systems with changeable resource allocation relationships (control specifications). First, we propose a reconfiguration mechanism. It updates the P-invariant-based supervisor and evolves the state of the closed-loop system. The latter adapts to the certain changes in specifications by the self-regulation of the closed-loop system's state. It utilizes fully the robustness in a closed-loop system and avoids unnecessary modification of a supervisor. Then, a reconfiguration model with robustness analysis is proposed based on integer programming. By using it, a firing sequence of transitions as a serial of reconfiguration actions can be found. The execution of the sequence implements the state evolution of a closed-loop system. There is no need for making additional efforts to analyze state reachability of the system, since the firability condition of transitions is incorporated into the model. Finally, the method is illustrated through an example of a hospital emergency service system. © 2013 IEEE.

关键词： Closed loop systems

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Knowledge discovery approach based on closeness relationship of FC

Knowledge discovery approach based on closeness relationship...

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6th International Conference on Fuzzy systems and Knowledge Discovery, FSKD 2009

作者： Zhang, Degan Li, Miao Zhang, Xiaoli Wang, Jinhui Tianjin Key Lab. of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9780769537351

A fuzzy clustering is one of important and valid methods to knowledge discovery. One of problems in fuzzy clustering is to determine a certain fuzzy sample classification in given limited sample space. Another is its validity, that is to say, if the sample is resemble in sample space, its fuzzy type will be resemble too. In our research, firstly, using triangle arithmetic operator and triangle transference, we extend fuzzy equivalence relationship to fuzzy closeness relationship, and cluster. Secondly, importing fuzzy coverage based on fuzzy closeness relationship, we judge resemble type of resemble sample. Thirdly, we introduce the clustering method based on fuzzy closeness relationship and fuzzy coverage. The method can overcome information more loss in fuzzy equivalence. Finally, evaluating its validity, we test its feasibility. The method above is applied to knowledge discovery for electronic commerce on Internet, we have got good result. © 2009 IEEE.

关键词： Fuzzy clustering

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An efficient web service composition approach based on improved particle swarm optimization model

An efficient web service composition approach based on impro...

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International Conference on Management and service Science, MASS 2009

作者： Yi, Liang Yingyuan, Xiao Tianjin Key Lab. of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9781424446391

Along with the rapid growth of the number of the available web services over the internet, the quality of services (Qos) becomes an imperative concern for service consumers and providers. How to differentiate their quality based on Qos criteria at web service level is a challenging issue. Considering that evolutionary algorithm has powerful ability of searching information, a new web service composition model under improved particle swarm optimization (IPSO) algorithm is presented in this paper. According to the non-functional attributes Qos of services, the model can select web services with optimal Qos and compose them into value-added web services. Furthermore, IPSO model not only can find the service with optimal Qos immediately but also can overcome the bottleneck of the standard PSO model. It can balance the exploitation and exploration and avoid premature convergence to some extent. As a result, web services can be invocated dynamically and be composed automatically and efficiently. The preliminary experimental results indicate that the web service composition approach based on IPSO model is applicable and feasible to the optimization of general service compositions. ©2009 IEEE.

关键词： Quality of service

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Regular Paper: A Study of Architectural Optimization Methods in Bioinformatics Applications

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The International Journal of High Performance computing Applications 2007年第3期21卷 371 - 384页

作者： G. Tan L. Xu Z. Dai S. Feng N. Sun KEY LABORATORY OF COMPUTER SYSTEM AND ARCHITECTURE INSTITUTE OF COMPUTING TECHNOLOGY CHINESE ACADEMY OF SCIENCES BEIJING CHINA KEY LABORATORY OF COMPUTER SYSTEM AND ARCHITECTURE INSTITUTE OF COMPUTING TECHNOLOGY CHINESE ACADEMY OF SCIENCES BEIJING CHINA

Studies in the optimization of sequence alignment have been carried out in bioinformatics. In this paper, we have focused on two aspects: memory usage and execution time. Our study suggests that cache memory does not have a significant effect on system performance. Our attention then turns to optimize Smith—Waterman's algorithm. Two instruction level methods have been proposed and 2—8 fold speed improvements have been observed after the optimization has been implemented. Further improvements on system performance have been achieved by overlapping computation with system I/O usage.

关键词： bioinformatics sequence alignment cache memory instruction level parallelism I/O overlapping

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