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检索条件"任意字段=2012 International Conference on Computer Science and Service System, CSSS 2012"

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Signal-to-Interference-Ratio based Capacity Analysis for Vehicular Ad Hoc Networks

Signal-to-Interference-Ratio based Capacity Analysis for Veh...

引用

17th international IEEE conference on Intelligent Transportation systems & The Asia-Pacific Council on systems Engineering conference 2014

作者： Minming Ni Jian Yu Hao Wu Zhangdui Zhong State Key Lab.of Rail Traffic Control and Safety Beijing Jiaotong University School of Computer and Information Technology Beijing Jiaotong University

Considering the different quality of service(Qo S)requirements posed by the various applications of vehicular ad hoc networks(VANETs),the characteristic of communication capacity is vital for the design of the Intelligent Transportation system(ITS).Although some scaling law-based results had already been obtained for VANETs to describe the general performance changing pattern when the total number of network nodes goes to infinity,they cannot be used directly to estimate the actual capacity of a communication pair or the entire *** make up with this disadvantage,a interference-based capacity analysis is finished in this paper for the VANET *** representing the unique constrain of inter-vehicle distance,which directly affects both the signal and interference power decaying,the car-following model is used to describe the vehicles' mobility *** on that,a series of probability characteristics are derived for the worst interfered scenario,which finally leads to the expected VANET *** believe the new results obtained in this paper will provide useful guidelines for the deployment of future VANETs.

关键词： VANETs Signal-to-Interference-Ratio based Capacity Analysis for Vehicular Ad Hoc Networks

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Adaptive Power Allocation and Performance Analyses of Cognitive Best Relay Cooperation Schemes with Multiple Primary Users Under Outage and Interference Constraints

Adaptive Power Allocation and Performance Analyses of Cognit...

引用

2014 international conference on Remote Sensing and Wireless Communications(RSWC 2014)

作者： MING ZHOU XIANGDONG JIA College of Computer Science and Engineering Northwest Normal University

This work focuses on the impact of the number of primary users(PUs)pairs and the outage constraint of PUs on the power allocation of secondary users(SUs)and outage performance of cognitive *** at such objects,we consider a cognitive opportunistic relaying(COR)system with multiple primary user ***,by using the concept of outage constraint,we obtain the adaptive power allocation schemes of ***,based on the results,the exact closed-form solution to outage probability is achieved by using appreciate mathematical *** simulated results show that the derivations match well the simulations,which validate the *** the same time,the simulations show that the system performance is impacted by the number of PU pairs,***,in practical implementation,we should decrease the number of PU pairs as much as possible in order to improve the performance of COR systems.

关键词： Adaptive Power Allocation and Performance Analyses of Cognitive Best Relay Cooperation Schemes with Multiple Primary Users Under Outage and Interference Constraints

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Research on transformation technology: converting river GIS maps to S57 standard charts

Research on transformation technology: converting river GIS ...

引用

2014 international conference on computer science and systems Engineering（CSSE2014）

作者： Q.Hu L.L.Cong S.F.Zhang College of Information and Science Technology Dalian Maritime University

ISBN: (纸本)9781784660543

Because of the lack of inland river charts based on the S57 standard, the positive effect of Electronic Chart Display and Information systems(ECDIS) and Electronic Chart system(ECS) are limited. For resolving the deficiency of S57 standard charts in inland waterways and ensuring the safety of ship navigation in those areas, this paper presents the technology for transforming Geographic Information system(GIS) maps to S57 standard charts. First, the vector topologic structures of Map Info universal exchange format and S57 standard format are demonstrated. Then, transformation parameters and the target objects matching between the GIS maps and S57 charts are analysed. Based on the above, some key techniques are designed, including a model of vector data transformation, topological mapping relationships between the target objects of river GIS maps and the feature objects or special objects of S57 standard charts. Furthermore, the implementation process of transformation technology between river GIS maps and S57 charts is developed. The result show that the transformed S57 river charts can work perfectly on the ECDIS and ECS devices, which promotes the application of ECDIS and ECS, whilst ensuring the safety of vessel navigation.

关键词： Mapinfo universal exchange data format river GIS map S57 standard transformation technology

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Using Off-Line Features and Synthetic Data for On-Line Handwritten Math Symbol Recognition

Using Off-Line Features and Synthetic Data for On-Line Handw...

引用

international Workshop on Frontiers in Handwriting Recognition

作者： Kenny Davila Stephanie Ludi Richard Zanibbi Department of Computer Science Rochester Institute of Technology Rochester New York USA Department of Software Engineering Rochester Institute of Technology Rochester New York USA

We present an approach for on-line recognition of handwritten math symbols using adaptations of off-line features and synthetic data generation. We compare the performance of our approach using four different classification methods: AdaBoost. M1 with C4.5 decision trees, Random Forests and Support-Vector Machines with linear and Gaussian kernels. Despite the fact that timing information can be extracted from on-line data, our feature set is based on shape description for greater tolerance to variations of the drawing process. Our main datasets come from the Competition on Recognition of Online Handwritten Mathematical Expressions (CROHME) 2012 and 2013. Class representation bias in CROHME datasets is mitigated by generating samples for underrepresented classes using an elastic distortion model. Our results show that generation of synthetic data for underrepresented classes might lead to improvements of the average per-class accuracy. We also tested our system using the Math Brush dataset achieving a top-1 accuracy of 89.87% which is comparable with the best results of other recently published approaches on the same dataset.

关键词： Accuracy Training Shape Histograms Support vector machines Testing Kernel

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Drug identification and interaction checker based on IoT to minimize adverse drug reactions and improve drug compliance

Drug identification and interaction checker based on IoT to ...

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作者： Jara, Antonio J. Zamora, Miguel A. Skarmeta, Antonio F. Clinical Technology Lab Computer Science Fac University of Murcia Murcia Spain

Drug compliance and adverse drug reactions (ADR) are two of the most important issues regarding patient safety throughout the worldwide healthcare sector. ADR prevalence is 6.7 % throughout hospitals worldwide, with an international death rate of 0.32 % of the total of the patients. This rate is even higher in Ambient Assisted Living environments, where 15 % of the patients suffer clinically significant interactions due to patient non-compliance to drug dosage and schedule of intake in addition to suffering from polypharmacy. These instances increase with age and cause risks of drug interactions, adverse effects, and toxicity. However, with a tight follow-up of the drug treatment, complications of incorrect drug use can be reduced. For that purpose, we propose an innovative system based on the Internet of Things (IoT) for the drug identification and the monitoring of medication. IoT is applied to examine drugs in order to fulfill treatment, to detect harmful side effects of pharmaceutical excipients, allergies, liver/renal contradictions, and harmful side effects during pregnancy. The IoT design acknowledges that the aforementioned problems are worldwide so the solution supports several IoT identification technologies: barcode, Radio Frequency Identification, Near Field Communication, and a new solution developed for low-income countries based on IrDA in collaboration with the World Health Organization. These technologies are integrated in personal devices such as smart-phones, PDAs, PCs, and in our IoT-based personal healthcare device called Movital. © 2012 Springer-Verlag London.

关键词： Internet of things

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Network automatic test system based on database middleware

Network automatic test system based on database middleware

引用

2nd international conference on Information Engineering and Applications, IEA 2012

作者： Jia, Zhiyan Xie, Han School of Electronics and Computer Science and Technology North University of China Xueyuan Road 3 Taiyuan 030051 Shanxi China

ISBN: (纸本)9781447148463

According to the feature of data format in network automatic test system, a database model integrated DBMS and file system is advanced in this paper. Based on the model and java technology, combined with general and common features of business operation, a database middleware of network automatic test system is designed and implemented. The middleware provides users with a single, powerful application interface. And it is able to provide client a common CRUD and data access service, which enhances the scalability and reusability of system, and reduces the burden of system maintenance and upgrade. Experiments show that the network automatic test system based on database middleware is stable and scalable. © 2013 Springer-Verlag.

关键词： Middleware

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Analysis and Implementation of computer system of College Students' PE Scores Management

Analysis and Implementation of Computer System of College St...

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international conference of Modern computer science and Applications (MCSA 2012)

作者： Ma, Jianfeng Xian Int Univ Sports Dept Xian Shanxi Province Peoples R China

ISBN: (纸本)9783642330292

computer system of college students PE scores management is intended to take the place of teachers in calculating and counting scores of PE courses, and implement information management of scores of PE courses. The system implements PE scores management by B / S mode, this mode solved the drawback that it was essential to enter the specialized laboratories to access the system by C / S mode, it facilitates the storage and query of students' scores. The computer system has completed tedious calculations and statistics of sports scores automatically, achieved information management of sports scoers, alleviated working pressure of the PE teachers, improved the working efficiency of PE teachers.

关键词： C / S mode PE scores computer management

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Effects of dissimilar rootstocks on major nutrients translocation of bleeding sap in muskmelon

Effects of dissimilar rootstocks on major nutrients transloc...

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The international conference on Biotechnology,Agriculture,Environment and Energy(ICBAEE 2014)

作者： Y.F.Liu Q.B.Song H.J.Liu H.Y.Qi X.R.Han T.L.Li C.M.Bai Y.Li Z.X.Cen Shenyang Agricultural University Liaoning Academy of Agricultural Sciences Shandong Agricultural University Patent Examination Cooperation Center of the Patent Office SIPO

This paper was focused on the discussion about the major nutrients translocation in bleeding sap during muskmelon development and its responses to dissimilar grafting *** experiments with muskmelon（Cucumismelo *** 1） as scion and white seed pumpkin（Cucurbita maximaxmoschata *** Strong,Qianwang and Shengzhen 1） as rootstocks have indicated that these dissimilar scion/rootstock combinations will exert different influences on the total volume and major nutrients translocation in bleeding *** increased the total volume of bleeding sap at different developmental stages,and G1（Zhongmi 1/Riben Strong） and G3（Zhongmi 1/Shenzhen 1） enhanced the supply capacity of NO-N,NH-N,phosphorus and potassium to the aboveground parts from the root *** based on the major nutrient supply capacity of root system for comprehensive consideration,G1 and G3 were superior grafting combinations for top quality and high yield potential.

关键词： nutrient translocation bleeding sap scion/rootstock combinations grafting

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A new DNA algorithm for solving the minimum set covering problem based on molecular beacon

A new DNA algorithm for solving the minimum set covering pro...

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2014 international conference on Communication Technology and system(ICCTS 2014)

作者： Yecai Guo Binglong Zhang School of Electronic and Information Engineering Nanjing University of Information Science and Technology

DNA computing is a new way of computing in computer research, which is different from the traditional method of calculation. A large number of facts indicate that many complex problems can be solved by using it. Molecular beacon is a biological molecule with similar to hairpin and can detect the target sequences in solution accurately. According to the characteristics of mathematical model for the minimum set covering problem, this paper proposed a new DNA algorithm for solving the minimum set covering problem based on molecular beacon. In this proposed algorithm, the principle of molecular beacon is introduced and the procedure of solving the minimal set covering problem model is analyzed, the corresponding experimental operations were designed and a specific instance is used to verify the correctness of the proposed algorithm. The results show that this proposed algorithm is reliable and easy to be carried out without any catalyst and enzymes. Besides, molecular structures used in experiments are simple.

关键词： Minimum set covering molecular beacon DNA algorithm experimental operations specific instance

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Study on Improved Expert PID Controller Based on PSO Algorithm for Maglev Transportation system with Time Delay

Study on Improved Expert PID Controller Based on PSO Algorit...

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2014 international conference on Mechanical Design, Manufacture and Automation Engineering(MDMAE 2014)

作者： Rong-rong SONG Zi-li CHEN Wei-hua MA College of Electrical Engineering Southwest Jiaotong University College of Computer Science and Technology Southwest University for Nationality College of Maths Southwest Jiaotong University Traction power state key laboratory Southwest Jiaotong University

Time delay is one of the most important aspects of the suspension control performance impact in maglev transportation system(MTS).By using the traditional PID control,the problem is that it is difficult to confirm the PID parameters and have long settling time,even appear the chaotic ***,using Expert PID(EPID)control method produced over-fitting to initial assignments,local optimum induced easily and slow convergence rate *** on the global optimization feature of PSO algorithm,it has been adopted to optimize the initial values of Expert PID control in this *** intelligent control algorithm for the maglev transportation system was put forward based on Expert PID optimized by Particle Swarm Optimization algorithm(EPID-PSO).The expert rule is that if the absolute value of the error trended to decrease,the PID current control kept its maintenance;if not,then the PID current control applied strong *** this rule,the dynamic error is reduced,and the performance of time delay is *** results by MATLAB proved that the control scheme compared with EPID control and PSO-PID control has good robustness,shorter adjustment time,faster response time,achieving better quality of control.

关键词： Maglev transportation system Expert PID control PSO algorithm Time delay MATLAB simulation

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