bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of Smart Distribution Integration Evolution
Authors: Zhang Zhe Jun , Luo Yu , Yan Du
Published: June 2013

Nowadays, there are too much data residing in various automation islands independently installed in utilities in the past few years. So utilities are facing two problems: (1) how to integrate these islands and transform these data into meaningful information; (2) how to manage evolution of the integration. The entire integration cant be done in one implementation and hence the integration should have a long term evolution (LTE) plan. And now the industry consensus is that we have to use CIM to facilitate all these integrations. How to deal with this evolution is the most challenging issue. The utility should have plug-in monitoring, control, management and services of their new needs using smart grid standard s of IEC SG3. These standards include IEC 61970/61968 CIM and IEC 61850 which could ensure seamless information exchange. This means that legacy CIM version will be updated to a new version of this evolution, and the changes will be continuing within the integration evolutions. The approach is that we provide a LTE framework for the utility and use Common Source Modeling to customize their 61970/61968 CIM model in identified integration scope. A CIM version manager will deal with different CIM versions for information exchange under the latest CIM version. Some MDA (Model Driven Architecture) based tools will provide code generators to make this updating smoothly and automatically when utility business is changing with new or smart grids requirements.
The Extraction of Chinese Temporal Expressions Based on LEX
Authors: Zhao Dan Dan , Song Liang , Yang Qi Wei
Published: June 2013

Temporal Expressions are important structures in natural language. Temporal information is useful in many NLP applications, such as information extraction, question answering and summarization. In this paper, we present an approach for extracting temporal expressions from Chinese texts. Using LEX parser, defining grammar rules of temporal expressions as LEX source program through the cooperation of LEX and C compiler, get the temporal expressions from unprocessed Chinese corpus. Our experiments demonstrate that on the TempEval 2010 Chinese corpus this approach is valid with the F1-measure values of 93.97%.
A Path Summarization and Prediction Method Based on Meaningful Locations
Authors: Kim Jaek Wang , Lee Seung Hoon , Jung Hye Wuk , Lee Jee Hyong
Published: June 2013

In this paper, we propose a path prediction approach using behavioral data of user that it contains the meaningful locations extracting and predicting method. The proposed method has a difference to the previous methods that is considering the interaction data for defining the meaningful location and predicting the future paths. Using these interaction and path data, the proposed method calculates the proximities of adjacency people. For extracting the meaningful locations, we consider the calculated proximity of people around user and stay time based on path data. And we simplify the paths using these extracted meaningful locations. Finally, in prediction step, the method predicts the destination using the simplified paths, and finds detail path from current location to destination using modified Dynamic Time Warping (DTW) algorithm. For verifying the usability of proposed method, first, we analyze the effect of people around the user for predicting the future paths of user. We verify the effectiveness of the proposed method by comparing the prediction accuracies of each method.
Research on Chronic Disease Network Question-Answering System and Similarity Matching Algorithm
Authors: Gao Lei Na
Published: June 2013

In view of the existing circumstances and problems in the medical services of chronic disease health consulting and guidance, an intelligent question-answering (QA) system based on B/S pattern is proposed in this paper. The system adopts a way combining automatic intelligent searching with semi-automatic assistant QA technology. Firstly, a structural model is established, and then the function of each module is discussed. Besides, an improved similarity algorithm is put forward and illustrated to have a good matching effect by experiment analysis.
The Automatic Algorithm of Cause and Effect of Finace Information Systems Based on Management Capabilities
Authors: Ren Fei Yan
Published: June 2013

One of the most important factors of management in obtaining organization targets is effectiveness of financial management structures, and user of the financial management structures have more important role in the effectiveness of the structures. The purpose of this research is to study the influence of human factors including personal and individual characteristics of user of financial management structures based on effectiveness PC. For this target, a sample includes 2354 offices, organizations, private companies and organizations than apply financial management structure based-PC. Has been selected randomly and the investigative data has been counting using questionnaires. In order to find personal characteristics of users, the particular questionnaires which are designed according to four factor model of personality, has been done. In order to research the relation between effectiveness of the structure and personality, four hypotheses based on four features of personality. Moreover, in order to find the relationship between expertise (educational level, educational field and amount of training curriculum of PC knowledge), job satisfaction and experience of users, and effectiveness of the accountancy management structure based-PC, some hypotheses have been studied and written. The study results indicates that personal characteristics including Agreeableness, openness, Conscientiousness and experience working , is efficient on the financial management structures based-PC.
Multi-Objective Optimization of Multi-Mixed-Model Assembly Lines Sequencing Problem
Authors: Li Zhi , Jiang Zhao Liang
Published: June 2013

Multi-mixed model assembly lines (MMMALs) sequencing cooperative optimization is a typical problem that a variety of products models are assembled in multiple assembly lines. It extends the traditional products sequencing from MMAL to MMMALs. In this paper, we pose products assembly sequencing in multi-mixed model assembly lines (MMMALs) as a multiple-objective optimization problem with the objectives to minimize consumption waviness of each material in the lines, total setup cost and finished product inventory cost. The multi-objective optimization algorithm based on NSGAII is designed. Computational experiment has been demonstrated to the applicability of using NSGAII to solve the problem and effectiveness of the proposed approach. By means of this research, the valid solutions for products assembly sequence can be offered to the decision makers effectively.
Embedded Differential Evolution Algorithm for Recurrent Fuzzy Neural Network Controller Optimization
Authors: Wang Xiao Sheng , Li Ying , Guo Yan Hui
Published: June 2013

A chaos concise differential evolution algorithm (CcDE) is proposed for the embedded controller with limited memory, which introduces chaotic local search based on basic differential evolution algorithm to increase exploring and prevent premature convergence. Using virtual population and Gaussian sampling, the CcDE becomes simple and reduces the memory requirements at run time. Experimental simulation on optimizing parameters of the recurrent fuzzy neural network shows that the proposed CcDE can obtain better performance than other concise algorithm.
Rough Set Fuzzy Neural Network Fault Diagnosis for the over Current Detection of Coal Mining Scraper
Authors: Zhang Yong Qiang , Ma Xian Min , Yang Jian Xiang , Zhang Yan Ni
Published: June 2013

In this paper the rough set fuzzy neural network is used to monitor the over current fault problem of the mining scraper conveyor motor driving system. The phase current signals are input into the neural network, and then the current signals are processed with fuzzy logic set theory for optimization. Because too many rules may lead to complex computation, the rough set theory is used to reduce the rules after the signal characteristics are extracted. The simulation results show that the precision and reliability of motor driving system of the mining scraper conveyor can be improved by this method.
Optimization of Ship Field Repair Scheduling Based on Depth First Search Method
Authors: Li Ang , Pu Jin Yun
Published: June 2013

Ship field repair sheduling is a asynchronism and concurrency process. Although it is complex, it is very important in the field repair decision at wartime. Through the optimal field repair scheduling, we can reduce the total repair time and improve repair efficiency. Regretly ship field repair scheduling optimization model has not been researched perfectly. Generally speaking, there are field repair processes of two kinds. Repair processe of one kind is that the repair sequence is fixed and the repair resource need not be scheduled. It is used to schedule repair tasks of the same kind. Repair processe of the other kind is that the repair resoure should be scheduled to reduce the total repair time. It is used to schedule the repair tasks of the different kind. The scheduling method of the first kind has been researched in math work. But the math model turns to be complex when the amount of the object increases. The scheduling method of the second kind is more complex than the first one. It is a typical asynchronism and concurrency process. So the new feasible models should be researched. Based on the repair processes of the two kinds, two ship field repair scheduling models are founded based on timed colored Petri net (TCPN) and depth first search method in this paper. The timed colored Petri net is used to model repair process and its transition rules are used to design the arithmetic. The arithmetics of the two models are explained in detail. In the second arithmetic, the conflict-solution is researched particularly. Conflict-solution method is corresponding to the field repair resource scheduling plan. The conflict-solution problem is solved based on depth first search method of artifical intelligence. Through the examples of the use of the two arithmetics, we find that the arithmetics given in this paper are very feasible and convenient. The field repair scheduling optimization models are the basic of the ship field repair and safety recovery intelligent decision support system. Through the optimization models we can generate the repair scheduling plan intelligently. That is to say the two models are not only optimization models but also intelligent models.
The Design of the Engine Room Cooling Model Based on a Simple Algorithm
Authors: Wei Lian Qiu
Published: June 2013

Computer room cooling performance directly affect the operation of the engine room, the air conditioning out of the wind through the method to build a three-dimensional simulation of the engine room to explore the room hotspot locations, and to optimize the configuration of the cabinet task according to the engine room heat distribution. Using the Fluent Fluid Dynamics processing software provides simple algorithm to simulate the flow and temperature fields of the simulation engine room, the idea of sampling point using the model output parameters, use the function fitting, build a function of the wind speed of the air speed sampling point obtained reasonable outlet velocity.
An optimization Algorithm of LVQ Neural Network Classification by GA
Authors: Liu Liang , He Xiao Hong , Sun Hao
Published: June 2013

This paper describes a dimension reduction method of input vector to improve classification efficiency of LVQ neural network, where GA is used to decrease the redundancy of input data. And in order to solve the initial weight vector sensitivity, GA is also employed to optimize the initial vector. The experimental results on the UCI data sets demonstrate that the efficiency and accuracy of our LVQ network by GA is higher than general LVQ neural network classification algorithm.
The Multi-Point Temperature Decoupling Control Method and its Realization
Authors: Chen Jing , Yang Wei , Luo Aij Un , Wu Xue
Published: June 2013

There is a strong coupling among the multi-point temperatures of rich- or pure-oxygen combustion ceramic roller kiln. The temperature of ceramic kiln is characterized by large inertia, pure time-delay and nonlinear features. The simple and practical decoupling control method in this kiln is proposed, and the multi-point temperature decoupling controller based on DSP is developed. The traditional PID algorithm is improved. Experimental results show that the decoupling controller of multi-point temperature has high control precision, reliability, and high performance-price ratio. It can meet the control requirements of this kiln.
Study on Appling the Sampling Information Processor into the Shared Control System Identification in Internet
Authors: Zhou Jiang Lin , Chen Hong Wei , Zhuang Li Jun
Published: June 2013

In order to realize the parameters estimation of shared plants by the server node in the Internet Based Shared Control System. We propose a new method that can online identify the model parameters through Internet Based Shared Control System under the time-varying and time-delay environment. By applying the Sampling Information Processor to the course of the shared plant online identification, we can decrease the influence of network factor in the online identification system .Taking out all ranks state variable of shared plant’s model by identification algorithm processor in server node, we realize the online identifying the model parameters of the remote terminal. Numerical computer simulations are performed to compare our system’ result with the existing system’ result without influence of network factor. Results show that our method is valid. Lastly, our method realizes to identify the model parameters of the controlled object in different region under the network environment, and extends the applications of the online identification system.
A New Approach for Building Domain-Specific Corpus with Wikipedia
Authors: Zhang Xin Ye , Li Xiu , Ruan Zhi Jian
Published: June 2013

Domain-specific corpus can be used to build domain ontology, which is used in many areas such as IR, NLP and web Mining. We propose a multi-root based method to build a domain-specific corpus making use of Wikipedia resources. First we select some top-level nodes (Wikipedia category articles) as root nodes and traverse the Wikipedia using BFS-like algorithm. After the traverse, we get a directed Wikipedia graph (Wiki-graph). Then an algorithm mainly based on Kosaraju Algorithm is proposed to remove the cycles in the Wiki-graph. Finally, topological sort algorithm is used to traverse the Wiki-graph, and ranking and filtering is done during the process. When computing a node’s ranking score, the in-degree of itself and the out-degree of its parents are both considered. The experimental evaluation shows that our method could get a high-quality domain-specific corpus
Comparison of Déjà Vu X and Trados 7.0
Authors: Tian Xu Jun , Tian Ya Zhou
Published: June 2013

The author will compare and evaluate two translation softwares Déjà Vu X (DVX) and SDL Trados 7.0 mainly from three aspects with his own E-C translation experience: the terminology databases, translation memories, and working interfaces used in DVX and SDL Trados 7.0 respectively, and will accordingly highlight the advantages and disadvantages of both, in the hope that this paper will be of certain help for the choice, application and evaluation of both tools.
Transmission of Timing Sensitive Information Using Photonic Services
Authors: Vojtech Josef , Smotlacha Vladimir , Skoda Pavel
Published: June 2013

Present optical network can allow very stable transmission of information. Photonic services represent a new type of multi-domain, end-to-end network services, besides traditional data transmission enables also real-time and non-data transmission over photonic networks. We proved the concept of photonic services on a specialized metrology application - comparison of time scales, where time scales are compared over distance of 1100km.
Test Research on Engineering Property of Expansive Rocks of Anyang Test Zone in Middle Route of South-North Water Transfer Project
Authors: Cheng Zhuang , Wang Le Hua , Dong Yan Hua , Liu Xiao Ling
Published: June 2013

Test samples are selected in different depths of Pile No.1370 at Anyang test zone in Middle Route of South-North water transfer project. Through a series of experiment, the physical properties, mineral components and properties of mechanics, permeability and swelling-shrinking of expansive rock are well studied. The results show that hydrophilic mineral component of the expansive rock in different depths differ remarkably. To the same kind of expansive rock samples with the same dry density, cohesion and friction angles are negative linear correlation with moisture content respectively and cohesion is more sensitive to moisture content. With the same initial moisture content, the logarithm of saturated permeability coefficients of expansive rock samples are linear correlation with their dry densities. The initial moisture content has a much larger effect on maximum swelling ratio than shrinkage, thus the process of swelling-shrinking is not reversible. The results can supply scientific references for the South-North water transfer project.
Real Time Process Analysis System in Electronic Components Manufacturing
Authors: Suesaowaluk Poonphon
Published: June 2013

A simplified process monitoring system is implemented for process performance analysis. The concept of system is designed to deal with the reuse information from conventional measurement inspection of electronic piece parts. The analytical process depicts the principle of Statistical Process Control (SPC) to manipulate the preliminary data in the database from measurement machines in a real-time manner. The system will firstly generate a comparison graphical data from a particular process which then produces an identical product from the multiple machines. Finally, the system can distribute a variety of reports desired as described in the index of data storage as part of the measurement matrix. The report aims to guide the process improvement as well as the Measurement System Analysis for total quality control.
Estimation of the Parameters in a Dynamical Marine Ecosystem Model Based on the Adjoint Assimilation
Authors: Li Xiao Yan , Wang Chun Hui , Lv Xian Qing
Published: June 2013

By utilizing spatial biological parameterizations, the adjoint variational method was applied to a 3D marine ecosystem model (NPZD-type) and its adjoint model which were built on global scale based on climatological environment and data. When the spatially varying Vm (maximum uptake rate of nutrient by phytoplankton) was estimated alone, we discussed how would the distribution schemes of spatial parameterization and influence radius affected the results. The reduced cost function (RCF), the mean absolute error (MAE) of phytoplankton in the surface layer, and the relative error (RE) of Vm between given and simulated values decreased obviously. The influence of time step was studied then and we found that the assimilation recovery would not be more successful with a smaller time step of 3 hours compared with 6 hours.
Design of Live Evaluation System of Organic Materials Aging
Authors: Shao Lei , Zhao He Ming , Yu Yi Biao , Liu Tao
Published: June 2013

Organic materials (cable particularly) aging has an adverse effect on the safety of productionsituations, and it is unscientific to replace organic materials blindly. A live evaluation system of organicmaterials aging was developed in present paper. This system consists of control and detection circuit(composed by ARM chip S3C6410 and force sensor, etc.) and servo drive motor. Compressivemodulus of organic materials was tested by the system with the help of mechanical system, so as toevaluate the cable aging.
Logical Data Deletion in High-Performance De-Duplication Backup
Authors: Yang Tian Ming , Tang Zhen , Wan Ya Ping , Sun Wei
Published: June 2013

Data de-duplication divides backup stream into chunks and eliminates duplicate chunks across the entire system, thus remarkably reduces the storage and bandwidth requirement for backups. However, this technique also introduced many new problems among which the performance problem has been resolved by many of the existing solutions, while the logical data deletion problem is not well studied till now. This paper studied the logical data deletion mechanism in de-duplication backup systems, analyzed the memory overhead of the Bloom filter, which supports both high performance de-duplication and logical data deletion, and proposed a lazy deletion method to minimize the influence of logical data deletion on de-duplication performance.
Design and Implementation of University Information Service Platform Based on Data Warehouse
Authors: Wang Xiao Guo , Jia Ru
Published: June 2013

Considering the functional requirements of essential service, value-added service, prediction service and personalized service, which are demanded by users from university, enterprise and government, this paper designed an infrastructure of university information service platform using data warehouse technology. By means of the infomation resource integration method put forward by this paper, the platform realized the subject-oriented, multi-scale service to meet users service requirements and support decisions.
Circular Transitivity of a Bidirectional Proxy Re-Encryption Scheme
Authors: Hong Xiao Jing , Wang Bin
Published: June 2013

The concept of proxy re-encryption (PRE) was first introduced by Blaze et al. Since then several CCA secure PRE schemes have been presented. Weng et al. proposed a non-transitive bidirectional PRE scheme without pairings and proved that their scheme to be PRE-CCA secure in the random oracle model under the CDH assumption. However, we show that Weng et als non-transitive scheme is still transitive under the formal definition of non-transitivity presented in this paper. Moreover, the transitivity of Weng et al.s scheme also implies that it is not PRE-CCA secure.
Research on Cloud Computing Security Based on the Remote Attestation
Authors: Xie Fu , Du Yun Yun
Published: June 2013

Cloud computing security has become a key problem of restricting the development of cloud computing, solving the cloud computing security problem has been extremely urgent. At present, it has become a new favorite in the cloud computing security research field that trusted computing is used to solve the cloud computing security, this paper uses remote attestation in trusted computing to solve the cloud computing security problems. In a cloud computing environment, the service provider not only needs to provide reliable components, but also needs to ensure that the computing platform system is reliable. In this paper, in view of the characteristics of the cloud computing platform, these two approaches are consolidated and improved, and a proof method based on the component properties and the system behavior (CPTBA) is put forward.
Study on Transforming Dynamic Modulus Master Curve into Static Relaxation Modulus Master Curve Basing on the Relaxation Time Spectrum of Asphalt Mixture
Authors: Chi Feng Xia , Wang Li Jian , Zhang Xiao Ning
Published: June 2013

In order to transform dynamic complex modulus into static relaxation modulus, an advanced Shear Rheometer is used to get complex modulus master curve of asphalt mixture. Dynamic modulus master curve is transformed into static modulus master curve basing on the relaxation time spectrum. Results show it is feasible that the dynamic modulus master curve can be transformed into relaxation modulus master curve in wide frequency domain basing on the relaxation time spectrum.
Effect of Track Measuring Beam on the Dynamic Properties of Rail Inspection Car
Authors: Wu Long Fa , Dong Hao
Published: June 2013

The track measuring beam is installed in the bogie frame to measure the geometry parameters of the rail. In this paper, the dynamic model of the inspection car was established in order to compare the dynamic properties of the vehicle with and without track measuring beam installation. The motion stability, ride quality, vibration acceleration and curve negotiation performance of the vehicle after the track measuring beam installed were investigated. The results show that after the track measuring beam installation the critical velocity of the inspection car decreases, but the running at speed of 120km/h can be guaranteed. The track measuring beam has no influence on the ride quality and curve negotiation performance and the effect of it on vibration mode is little.
Real-Time Fault-Tolerant Ethernet Technology - TTEthernet and its Feature
Authors: Li Qing Ru , Wang Hong Chun , Han Wei
Published: June 2013

Imported clock synchronization and time-triggered strategy in standard Ethernet, Time-Triggered Ethernet has its unique features. This paper introduces its traffic features, clock synchronization, standard configuration and scheduling strategy. Due to its new features Time-triggered Ethernet will have completely new application areas.
A P2P Reputation Incentive Mechanism based on Artificial Fish-Swarm Model
Authors: Liu Jun , Liu Xi , Zhu Chun Yan , Bai Yi Ying
Published: June 2013

Recently, P2P networks play an important role in network. However, there exist a large amount of malicious actions in P2P networks resulting from the lack of reputation system. For example, nodes are willing to share resources each other and may withdraw from networks at any time. Thus, the system is difficult to guarantee effectiveness and availability. According to the behavior of fish school, A novel optimizing, Fish-swam Algorithm, was proposed in this paper, which can decide the next step when nodes have no interactive experience with others. The algorithm based on the model of autonoms animals and was presented to be a kind of efficient incentive mechanism, through a series of experimental study.
Research of Network Traffic Matrix Based on Improved Fanout Model
Authors: He Lin Bo , Liu Li , Sheng Zhi Wei
Published: June 2013

Traffic matrix plays a very important role in network management field, such as network design, network optimization, traffic detection, etc. As a result, it is always a hot topic in network research. Based on traditional fanout model, an improved fanout model is proposed to conduct traffic matrix estimation. The model takes into consideration of estimation deviation brought by non-persistent sudden burst of networks flow in a short time, which improves the accuracy of traffic matrix estimation. The simulation shows with algorithm the estimation value has greatly improved in a one-day period.
The Research on the Applications and Trends of the Information Communication Technology in the Information Society
Authors: Zheng Yang Shuo
Published: June 2013

The changes caused by the information technology revolution to the society not only improves the science and technology level, but also develops the social information comprehensively. Besides, it leads to the profound reform in the social mode of production and the lifestyle of the ordinary people. The paper does an in-depth analysis and prospect the development trends of the information communication technology from the perspective of relationship among the information society, computer and the Internet, and systematically summarizes the basic characteristics of the information communication technology and the development trend as well as puts forward to the necessity of the close combination of the information communication technology with the user demand.
The Establishment of Distance Learning System Based on Power Line Communication Technology
Authors: Lv Chao , Hong Ying
Published: June 2013

Power Line Communication network has drawn more and more attention and achieved rapid development with its advantages of vast resources and low cost compared with telecommunication network and cable television network. Based on the advantages of Power Line Communication technology, the hardware system was formatted applying four-tier B/S architecture, and the distance learning system based on Power Line Communication technology was established using ASP (Active Server Page) technology. Study shows that the Power Line Communication network is a reliable network learning resources, of great significance to promote distance learning, especially in areas without Internet coverage.
The Study of Interpolation Algorithms in OFDM Systems
Authors: Zhang Xi Jun , Xue Jian Bin , Lin Ying , He Ji Ai
Published: June 2013

Orthogonal frequency division multiplexing (OFDM) is a kind of highly transmission technology. It has been taken more and more attention in many ways. In this paper it mainly discussed the simulation process and several interpolation algorithms in OFDM system. Using computer we simulate the interpolation algorithms in OFDM channel estimation. Through the simulation results we compare the advantage and disadvantage of the interpolation algorithms. At last we can use the conclusion to choose the correct interpolation algorithms in OFDM channel estimation.
K-Best Sphere Decoding of Lattice Codes Based on CRC Code
Authors: Wan Qian , Niu Kai , Lin Jia Ru
Published: June 2013

This work proposes a CRC-aided K-best sphere decoding scheme to improve the performance of lattice codes. The generator of the lattice is designed as to be an upper triangular, which is naturally suited for sphere decoding. When the K is sufficiently large, the naïve K-best sphere decoding can approach the lower bound of block error rate (BLER) of maximum likelihood (ML). Therefore, the proposed scheme can outperforms the naïve K-best sphere decoding with the assistance of CRC code.
Applied Research in the Field of Digital Publishing Based on IOT Model
Authors: Chen Zhi Wen
Published: June 2013

Internet of Things (IOT) model used in the field of digital publishing is studied, which can protect the security of the digital publication and enhance the layout of China's cultural industry and is also the development trend for digital publishing industry. Comparison from RFID tag, digital publication tag based on IOT model has more advantages in position, visibility, environmental impact and cost etc.. Application issues in the digital publishing field are analyzed and suggestions are discussed from technology to standard, which includes security of digital rights, system construction of digital publishing standards and industry research of watermark technology.
A Unix-Based Telecom Billing System
Authors: Huan Shi Yu
Published: June 2013

With the development of computer technology, people are no longer satisfied with a single operating system. More and more people like to use UNIX system because of its high reliability, good open, and powerful network features. The design of this telecommunications billing system is based on Browser / Server model using the java language for the UNIX platforms laboratory environment. The system can accurately time and automatically charge according to the business types when the user rents the server, and to complete information management of the server and user. This system is simple, friendly interface. It reduces operating costs of the telecommunications operators and improves productivity of them.
Density Wave Instability of Supercritical Kerosene in Active Cooling Channels of Scramjets
Authors: Wang Ning , Zhou Jin , Pan Yu , Wang Hui
Published: June 2013

Experimental investigations were made on the instability of supercritical kerosene flowing in active cooling channels. Two approaches were used to control the pressure in the channel. One is the back-pressure valve while the other is the venturi. In both conditions, a kind of low-frequency oscillation of pressure and temperature is observed. And the oscillation periods are calculated. By comparison with the flow time, it is concluded that the instability occurred in active cooling channels is probably one kind of density wave instability. And its period has no relationship with the cooling channel geometry, nor the pressure, but only depends on the flow time of kerosene in active cooling channels. When the mass flow rate, density and pressure drop couple with each other, the density wave instability will appear.
A Study of Parallelization and Performance Optimizations Based on OpenMP
Authors: Shen Hua , Zhou Guo Shun , Yan Hui Qi
Published: June 2013

The primary consequence of the transition to multicore processors is that applications will increasingly need to be parallelized to improve application's throughput, responsiveness and latency. Multithreading is becoming increasingly important for modern programming. Unfortunately, parallel programming is no doubt much more tedious and error-prone than serial programming. Although modern compilers can manage threads well, but in practice, synchronization errors (such as: data race errors, deadlocks) required careful management and good optimization method. This paper presents a preliminary study of the usability of the Intel threading tools for multicore programming. This work compare performance of a single threaded application with multithreaded applications, use tools called Intel® VTune Performance Analyzer, Intel® Thread Checker and OpenMP to efficiently optimize multithreaded applications.
Mobile Phone Virtual Online Exhibition Based on VRML
Authors: Yang Xi Hui , Liu Xiao Yuan , Gong Sheng Yu
Published: June 2013

This paper studies the virtual product model and user interaction techniques for virtual scene of 3DSMAX, VRML and WEB technology to build a phone virtual display system, so that the user can navigate the phone structure from different perspectives, conduct phone local remote zoom, move and rotation and to learn more about the structure of their components, the various parts of the physical shape and assembly characteristics by assembling animation. The phone virtual display system treats VRML as the core, uses JavaScript largely and shows virtual product designing method.
Predicting Bugs in Software Performance Test Process
Authors: Yu Yun , Chen Feng
Published: June 2013

Accurately predicting software bugs is one of software engineering’s great tasks. Current bug prediction algorithm take one aspect of software for granted, while neglecting the other aspect. This paper extracted static and dynamic features from software, which were used to predict bugs using relevance vector machine algorithm. Experimental results show that the new method outperforms others to a great extent.
Student Attendance Management System Based on Campus Smart Card Platform
Authors: Lv Chao , Zhang Ju Jian , Ma Yan
Published: June 2013

Traditionally most of the student attendance monitoring in colleges has manual based solutions, which are of low efficiency and poor accuracy. Using the contactless IC card technology, student attendance management system based on campus smart card platform has been realized, which will provide effective and accurate answer for monitoring absences with reduced workload. This system has achieved good practical performance, improved management quality and efficiency, and also accelerated the application of information technology.
Research and Practice of Scientific Research Quality Cultivation of Undergraduates Majoring in Materials Forming and Control Engineering
Authors: You Wei
Published: June 2013

In this paper, the cultivation mode of scientific research quality of undergraduates majoring in materials forming and control engineering was introduced. The goal of the major is cultivate applied talents of high quality. The authors had designed a training program_SEE Plan to cultivate the scientific research innovation consciousness and capability of undergraduates. Moreover, the authors had made full use of Beijing's academic resources such as various academic meeting of the professional to train the ability of communication of the undergraduates. Through several years cultivation, the undergraduates majoring in materials forming and control engineering had achieved considerable academic achievements, including academic papers, patents application and samples. The work is helpful of cultivating the undergraduates with strong science and technology innovation consciousness and has important theoretical meaning and practical application value in undergraduates cultivation.
Grey Relational Analysis Method for Urban Logistics
Authors: Li Jia Yang , Xiao Qian
Published: June 2013

Urban logistics is an important component of local economy. Vigorous development of urban logistics has profound effect on the economic performance, the urban modernization and the urban integrated competitive power. In order to evaluate the urban logistics performance as a complete system, it must be divided into different gradations firstly, based on which the characteristics and influences of each gradation are analyzed, and appropriate qualitative and quantitative indicators are defined. The grey relational analysis method was proposed to compare the competitiveness of urban logistics. Experiment results prove it has certain practical significance and maneuverability.
Design of the USB Intelligent Controller
Authors: Huang Ke Wang
Published: June 2013

This paper focuses on the design of the USB intelligent controller. The USB intelligent controller can be operated easily. It provides a variety of interfaces to connect MCU8032, MCU8051, Flash controller, Smart Media Controller, MMC controller.
Novel Composite Right/Left-Handed Transmission Lines and their Applications in Infinite Wavelength Resonant Antennas
Authors: Geng Lin , Wang Guang Ming , Wang Ya Wei
Published: June 2013

In this paper, two fractal-based composite right/left-handed (CRLH) transmission lines (TLs) are proposed, and their applications in infinite wavelength resonant (IWR) antennas are investigated. In order to impose CRLH properties on the TLs, both the symmetric and asymmetric unit-cells include a gap for series capacitance and Peano-fractal curves for shunt inductance. The circuit parameters analysis shows that the proposed TLs can be used to design miniaturized IWR antennas with extended bandwidth. Then, two fractal-based IWR antennas are designed and fabricated. The measured results show that the fabricated antennas have advantages in terms of small size and wide bandwidth over the reported IWR antennas.
A High-Performance Full Adder Circuit Based on a Novel 7-T XOR-XNOR Cell
Authors: Ding Yan Yu , Wang De Ming , Huang Qing Qing , Tan Hong Zhou
Published: June 2013

A high performance full adder circuit with full voltage-swing based on a novel 7-transistor xor-xnor cell is proposed in this paper. In our design, we exploit a novel 7-transistor xor-xnor circuit with a signal level restorer in a feedback path to settle the threshold voltage loss problem. Then we present a new high-performance 1-bit full adder based on the designed xor-xnor cell, pass-transistors and transmission gates. The simulation results prove that, compared with other designs in literature, the proposed full adder shows its superiority for less power dissipation, lower critical path delay and smaller power-delay product, and still provides full voltage swing in all nodes of the circuit.
Innovative Structure Improvement of a Glare Shield
Authors: Chang Chia Pao , Lin Ying Hsiang
Published: June 2013

Abstract. A glare shield is usually installed on the cement crash barrier to block strong light from the vehicles in contrary direction. It is useful to prevent car accidents and increase the safety of driving. This study uses the contradiction matrix in the TRIZ method, 39 engineering parameters, and 40 inventive and innovative principles to identify the areas of improvement to address the above problems. There are two features of our study. (1) We install a spring structure for the sake of reducing the damage rate of glare shields. When glare shields suffer from strong wind, a flexible structure located at base can let glare shields curve and spring back to original position, and therefore endures more powerful wind hit. In addition, the spring back function lets the guide post automatically return to original position to block strong light and protect drivers. This structure will have more durable service life, so, it can be used to reduce the maintenance times, and cost for the users.(2) We add solar LED light on the body of a glare shield, that can enhance the alert function when attacked by strong wind on the night time or insufficient light and then reduce the accident rate.
The Chip Design of Resistance Type Humidity Readout Circuit which Include the Temperature Compensation Function for Greenhouse Application
Authors: Feng Wen Jie , Li Jin Ping , Yin Tong Tong , Chung Wen Yaw
Published: June 2013

This paper presents the chip design strategy of resistance type humidity readout circuit for greenhouse application. The designed chip includes resistance change type humidity readout circuit, temperature compensation circuit, low voltage dropout generator (LDO), and analog to digital convertor (ADC).The humidity sensor which used in this research is HCZ_H8, and it is produced by Ghitron Company .Because resistance change type humidity sensor depends much on the temperature, so this paper develops a temperature sensing circuit to compensate the effects caused by the temperature change. The ADC in this research is13-bit fully-differential incremental delta sigma A/D converter, and the power supply is 3.3v, but the power supply of the humidity readout circuit is 5v, so a low voltage dropout generator (LDO) is included to match the power supply.
Design and Application of an In-Line Measurement System for Polarization Parameters
Authors: Wen Zhang Bin , Zhou Mi , Chen Zhe , Luo Yun Han
Published: June 2013

An in-line all-fiber measurement system for polarization parameters is designed and fabricated in this paper. This system implements accurate control of polarization state, together with in-line, accurate, and high-speed measurement of Stokes vector. It can measure the light polarization parameters such as States of Polarization (SOP), Degree of Polarization (DOP), Light Polarization Extinction Ratio (LPER), and related losses of polarization. Besides, polarization monitoring and stabilizing can be achieved using this system. Because there is no discrete device concluded, the optical path of this system is completely constituted by optical fiber, which makes the entire system low-cost, with small size and low insertion loss. Keywords: All-fiber, polarization control, polarization measurement, in-line system, Stokes vector
Design and Simulation Analysis of Scattering Netted Dots on Edge-Lighting Flat Light Guide Plate
Authors: Liu Yuan Feng , Chen Zhe , Luo Yun Han
Published: June 2013

Based on the analysis of the transmission process of light-beam in edge-lighting flat light-guide plate with Cold Cathode Fluorescent Lamp (CCFL) as a light source, this thesis achieved an arrangement formula and related method to design this kind of light-guide plate with scattering netted dots. According to the method, the designs of flat light-guide plate with scattering netted dots were simulated and analyzed by using ASAP software. Comparing the method with others, it was confirmed that the method was feasible and the good uniform luminance distribution on the flat light-guide plate for LCD was obtained by using this method.
Key words: light-guide plate, scattering netted dots, the function of netted dots filling ratios
Round Holes Pattern Design on Patterned Sapphire Substrate of GaN-Based LEDs
Authors: Yu Xin Yu , Zhang Jun , Chen Zhe , Xie Meng Yuan , Yu Jian Hui , Wang Guang Hua , Tian Zheng Wen , Li Te
Published: June 2013

Patterned sapphire substrate (PSS) is effective approach to improve external quantum efficiency of light emitting diode (LED) chip. The round holes pattern was studied in this paper. Simulation was used to study how external quantum efficiency changes in different parameters of the round holes for flip GaN-based LEDs fabricated round holes PSS. Through a series of comparisons on simulation results, the maximum enhancement of LED’s external quantum efficiency is 15% compared to the external quantum efficiency of non-patterned sapphire substrate (non-PSS) LED for a most effective pattern.
Investigations of the Optical Properties of LaNi5 and LaNi4.5Sn0.5
Authors: Chen Dong , Xu Chao
Published: June 2013

The reflectivity, loss function, refractive index, extinction coefficient and dielectric function of the LaNi5and LaNi4.5Sn0.5intermetallic compounds are investigated through the plane-wave pseudo-potential method based on the density functional theory. The effects of Sn impurity are discussed and some interesting features are found in the low frequency region. Some important optical properties such as static dielectric constant and static refractive index are obtained. The equation [n (0)]2=ε1(0)is satisfied according to our calculation, which indicates that our results are correct and reasonable. Nevertheless, the calculated results need to be testified in the future due to the lack of experimental data.
Level and Cluster Based Routing for Wireless Sensor Network
Authors: Yuan Kou Lin , Qiao Lin , Han Lei
Published: June 2013

This paper proposes a level and cluster based routing approach for a wireless sensor network. Nodes in the network are divided into several levels according to their hops to sink node. Every sensor node has a level number. Using level information, a sensor node can send messages to a sink node in a more efficient way, and a sink node can easily locate other sensor nodes. To make network more balanced, the paper introduces a cluster method, which splits nodes in the same level into different clusters, and chooses a cluster head for every cluster, to switch nodes in the cluster to work in turn. Unlike all other cluster routing methods, a cluster head node takes schedule jobs of sensor nodes in the cluster according to their energy left, instead of sensing. The paper also presents several algorithms for constructing a wireless sensor network, querying and scheduling. The simulation experiment shows that the scalability of our method is approximately linear.
Embedded Attitude Estimation System for Quad-Rotor UAVs
Authors: Wu Jing Ran , Sun Zhen Guo , Ma Qi Dong , Zhang Wen Zeng
Published: June 2013

An embedded attitude estimation system is developed for the autonomous flight of Quad-Rotor UAVs. The system hardware is composed of a DSP processor and low-cost MEMS sensors including a 3-axis gyroscope and a 3-axis accelerometer. A Complementary Filter fused the advantages of the gyroscope and accelerometer is designed and embedded on the DSP processor to estimate the real-time attitude. Ground testing experiments show that the system could meet the accuracy and robustness requirements for the Quad-Rotor UAVs attitude estimation.
Robust Multisensor Image Matching Using Bayesian Estimated Mutual Information
Authors: Yan Yu Zhuang , Shen Lu Rong , Zheng Yong Bin , Xu Wan Ying , Huang Xin Sheng
Published: June 2013

Mutual information (MI) has been widely used in multisensor image matching, but it may lead to mismatch among images with messy background. However, additional prior information can be of great help in improving the matching performance. In this paper, a robust Bayesian estimated mutual information, named as BMI, for multisensor image matching is proposed. This method has been implemented by utilizing the gradient prior information, in which the prior is estimate by the kernel density estimate (KDE) method, and the likelihood is modeled according to the distance of orientations. To further improve the robustness, we restrict the matching within the regions where the corresponding pixels of template image are salient enough. Experiments on several groups of multisensor images show that the proposed method outperforms the standard MI in robustness and accuracy and is similar with Pluims method. However, our computation is far more cost saving.