bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Group Key Agreement Protocol with Anonymity
Authors: Yao Gang , Guo Li
Published: August 2013

Popularity of group-oriented applications motivates research on security protection for group communications. A number of group key agreement protocols have been proposed for this objective, but most current group key agreement protocols do not consider privacy protection. Group key agreement protocols for networks should also handle dynamic group membership events such as user join and leave events. The Join and Leave Protocols provide backward and forward secrecy respectively. In this paper, we proposed a new anonymous group key agreement protocol based on ID-based encryption cryptosystems. The proposed protocol not only benefits from the desirable features of ID-based cryptosystem, but also provides privacy protection for users. The proposed protocol achieves the following security attribute: anonymity, unlinkability, group key secrecy, group forward secrecy, group backward secrecy, perfect forward secrecy for the group session key and entity authentication.
The Design and Application of Teaching Office Buildings with Electrical Control System Based on RF Wireless Network Technology
Authors: Wang Zuo Xun , Cheng Xiao Hui , Liu Yi
Published: August 2013

This paper an analysis of the present teaching of electric control system of the office building,the use of RF wireless communication technology combined with single chip microcomputer, using infrared technology, through the central control room for the entire teaching office lights and other electrical equipment for centralized, reasonable control; to ensure the stability of the system.
Research on the Information Interface at the Demand Side in Smart Grid
Authors: Li Wen Jing
Published: August 2013

In this paper, with the information analysis at the demand side in smart grid, two interactive modes and four interface protocols in application layer have been proposed according whether the main station exists or not. With comprehensively reviewing the smart electricity businesses related with power consumers, this paper defined the requirement and interaction content and four kinds of Web Service interface protocols in the application layer. Meanwhile, examples of information exchange in the actual scenarios was carried out. The results in this paper can impel the construction of smart electricity service system, enhance the user QoS and comprehensively intelligentize the demand response to a certain extent.
Research and Design of School's Architecture Based on SOA
Authors: Yang Yue
Published: August 2013

In order to realize the digital school, the school network is realized information sharing and service sharing by SOA. In the paper, the logic architecture of digital school is presented, including the user interface layer, the service control layer, the department service layer, the business logic layer and the data persistence layer. And the UDDI system of school network is designed of data management module, user management module, system log, UDDI server, Web manager and UDDI client.
HPRD: High Performance Tiered Replica Distribution in Cluster Storage System
Authors: Zhang Lei , Zhu Li Gu , Zeng Sai Feng
Published: August 2013

The cluster system exists as a variety of different machines. There are Nodes with high performance and nodes with lower performance. The distribution of data on each machine and I / O are determined by the equalization of load balancing. According to the traditional way of clustering data distribution, high performance node performance generally can't fulfill full potential. In this way, the lower performance nodes will become bottleneck. To address this issue we carried out some research and propose a High Performance Tiered Replica Distribution (HPRD) a way of the replica data distribution in the cluster storage system. HPRD can fulfill full high-performance nodes potential in the aspect of the performance benefits and high performance nodes can share more high-performance I/O load. Such performance bottleneck will not exist in the lower performance nodes. It can improve the performance of cluster system and the cluster system resource Utilization rate.It also can reduce inefficient use of resources.
Study of DDS-Based Test-Bed Architecture
Authors: Lin Qi , Chen Yong
Published: August 2013

Simulation technology is commonly used to study physical systems or imagined systems. Simulation systems can be used to perform what-if analysis on the simulated system, to predict the different results of varying key parameters/estimates or to examine a series of solutions prior to making the final implementation decision. It introduces the integration requirement of simulation test-bed, and the importance of decoupling the simulation component from normal federates is explained. The framework of test-bed which is based on the Data Distribution Service (DDS) model is proposed. A series of experiments to compare the decoupled architecture with a normal one are performed to study the scalability by emulating the simulation process based on the decoupled architecture.
The Reform for Software Engineering Majors Based on CDIO
Authors: Chen Xiang , Qiu Ye
Published: August 2013

In order to cultivate application oriented and high skilled talent s in the public education phase, it is essential for full development of students practice, design and innovation abilities by strengthening the experiment teaching. The CDIO(conceive, design, implement, operate) advocates learning by doing and project based education and learning. The CDIO theory is introduced in experiment teaching for software engineering majors, and experiment teaching is reformed based o n CDIO Syllabus. Specifically, a four level experiment system is designed, project based experiment contents are developed, and diversity evaluation methods are proposed. Through the new experiment teaching , students capacities as required by CDIO are fully trained to enhance students comprehensive quality.
Research on HW/SW Co-Verification Platform
Authors: Chang Li Bo , Du Hui Min , Han Jun Gang
Published: August 2013

The high complexity of very deep-submicron design makes their verification extremely challenging task. Various methodologies such as assertion-based verification and formal verification increase the confidence that a circuit is working according to specification, but in most of cases to guarantee a circuit is 100% compliant to its specifications is very difficulty . In this paper we present a platform for HW/SW Co-verification which takes both the advantages of hardware accelerators and the merit of reusable object-oriented verification method. According to the complex circuits, the experiment results show that this verification platform enhances the verification efficiency and function coverage.
Cloud Hierarchical Analysis for Educational Resources of Engineering Education Accreditation in China
Authors: Xiao Niu , Hou Kai Hu , Liao Wei Zhen
Published: August 2013

The core of engineering education Accreditation is to estimate engineering education qualification of each institute and make a direction for institutes development. The purpose of Accreditation is to improve universities ability to educate high quality engineers and to enhance Chinese engineering education and to make pace with international engineering education. Educational resources that affect the engineering education accreditation is one of important factors, Therefore, the model of educational resource for engineering education Accreditation becomes very important to insure the quality of Accreditation. This paper use Cloud Hierarchical Analysis (CHA) to deal with the fuzziness and uncertainty in the engineering education Accreditation. The Cloud Hierarchical Analysis can efficiently describe the fuzziness and randomness of judgment graphically by cloud figure and provide a picture for decision maker. Using cloud operator and geometric mean method to calculate the Cloud weights for each positive reciprocal Cloud matrix, and these weights are combined to determine the final Cloud scores for the alternatives. Finally, the calculation results show that Cloud Hierarchical Analysis model is suitable for educational resources of engineering education Accreditation.
Identity-Based Proxy Signcryption Schemes
Authors: Wu Jian
Published: August 2013

Identity-based encryption and signature schemes that allow any pair of users to communicate securely and to verify each other's signatures without verifying certificate. A signcryption is a primitive that provides the properties of both digital signatures and encryption schemes in a way that is more efficient than signing and encrypting separately. Proxy signature schemes are a variation of ordinary digital signature scheme that allow a proxy signer to sign messages on behalf of the original singer which proxy signcryption simultaneously fulfill both the functions of signature and encryption in a single step with a lower computational cost than that required by the traditional signature-then-encryption. In this paper, we present identity-based proxy signcryption schemes with lower efficient..
Design of Integrated Control and Support Platform for Airborne Digital Image Transmission System
Authors: Li Xu , Chang Li Min , Zhang Li Jing , Shi Yan Bin
Published: August 2013

Aiming at the problems of guarantee equipment deficiency and poor versatility in airborne digital image transmission system, and adopting ATE design ideas, this paper presents a design scheme of integrated control and support platform based on VME bus architecture. With the technology of software radio and software function modules, the design realizes the universal support of multi-type digital image transmission system. Adopting the technology of virtual system, software designs which are hierarchical, modular and interface, it realizes the integrated control of test system. The practice has proved that this support platform has the advantage of stable operation, good versatility, strong practicality and broad application prospects.
Improvement of a Dynamic ID-Based Remote User Authentication Scheme for Multi-Server Environment Using Smart Card
Authors: Wang Zhen Zhen , Ding Jin Kou , Jin Zheng Ping , Zhang Hua
Published: August 2013

In 2011, Lee et al. analyzed the security weaknesses of Hsiang et al.s scheme and proposed a security dynamic ID-based multi-server remote user authentication scheme. They claimed that their protocol is secure and efficient. However, we observe that Lee et al.'s scheme is still vulnerable to stolen smart card attack, malicious server attack. To remedy these security weaknesses, we propose an improved dynamic ID-based remote user authentication scheme for multi-server environment. Besides, security analysis and performance analysis show that compared with other remote user authentication schemes, the proposed scheme is more secure and possesses lower computation cost. As a result, the proposed scheme seems to be more practical for users with portable mobile devices in multi-server environment.
Mining Frequent Items in Uncertain Dataset
Authors: Chen Chao Quan , Huang Jia Huan , Jiang Yun Hui
Published: August 2013

Because of uncertainty data, traditional algorithm of mining frequent items in certain dataset is difficult to apply to uncertain dataset. Considering characteristics of uncertain data, an improved vertical mining algorithm to find frequent items in uncertain dataset was proposed with the algorithm thought of classic vertical algorithm-Eclat in certain dataset. The improved algorithm merged TID field and corresponding probability field into probability vector. During the expansion of itemset and probability vector, itemset tree was established, and the support of candidate itemsets was calculated by means of vector operations. The improved algorithm is proved to be feasible and efficient according to experimental comparison and analysis.
Multi-Resolution Meshes Deformation Based on the Offset of Sketching
Authors: Sha Chen Ming , Yue Ya Jie , Zhang Xiao Jing
Published: August 2013

The 3D meshes deformation is the deformation on 3D mesh models under users want, and keeping the mesh details at the same time. In this paper, we present a technique for multi-resolution meshes deformation based on the offset of sketching. In order to decrease the computational cost, the proposed method reduces the number of vertices involved in the deformation. First, we construct a simplified mesh using a modified CPM algorithm; and then correct Laplacian coordinates rotation by the offset of sketching and generate the deformed models by solving linear system in least squares sense with Gauss-Seidel algorithm; finally, series of details are added to the deformed simplified mesh. In contrast with the traditional deformation, our method can achieve natural deformed models more efficiently.
Collection Tree Protocol Research for Reliability of Data Transmission
Authors: Qiao Chang Fu , Yin Shou Yi , Ling Li , Cheng Ren Jun , Xu Chang Liang , Wang Jun
Published: August 2013

Collection Tree Protocol is a data collection protocol for wireless sensor network, which is based on an embedded operating system --TinyOS. This article briefs the mechanism of Collection Tree Protocol, analyzes the principle of data transmission. Especially, when mass of data must be transferred, it solves the reliability of Collection Tree Protocol. This improves its performance and has wide development prospects.
Study of PWM Voltage Source Rectifier Based on Predictive Current Control Strategy
Authors: Wen Quan , Zhu Ling
Published: August 2013

Traditional current strategy based on dq transformation used in three-phase PWM voltage source rectifier (VSR) has some shortcomings, such as dynamic response slow and DC voltage fluctuation. According to the problems, firstly this paper established discrete mathematical model of VSR, derived predictive current control strategies for VSR. Secondly, design a dual-closed-loop controller with current inner loop and voltage outer loop for the system. Finally, experimental researches are done. The results show that the three-phase PWM voltage source rectifier based on predictive current control in stabilizing DC voltage, control the AC current, etc, it has good steady-state and dynamic performance. The control method is simple, easy to implement, and has a certain practical value.
The Stability and the Computed Speed of Application Boundary Element Numerical Method to Compute the Electric Field Intensity Generated of One Hundred and Fifty-Needle Electrodes
Authors: Wang An Ling , Liu Fu Ping
Published: August 2013

According to the electric field intensity of one hundred and fifty-needle electrodes (OONE), the discrete equations based on the indetermination linear current density were established by the boundary element integral equations (BEIE) The non-uniform distribution of the current flowing from one hundred and fifty-needle electrodes was imaged by solving a set of linear equations. Then, the electric field intensity generated by OONE at any point can be determined through the boundary element method (BEM). The time of program running and stability of computing method are examined by an example. It demonstrates that the algorithm possesses a quick speed and the steady computed results. It means that this method has an important referenced significance for computing the electric field intensity generated by OONE, which is a fast, effective and accurate computing method.
Agent-Based Distributed Formation Tracking Adaptive Collaborative Control Simulation System
Authors: Zhao Ying Hong , Wang Yan Kai , Zhang Chong
Published: August 2013

Collaboration of multi-satellite system has a good application effect in the global remote sensing and three-dimensional observations field. Develop collaborative multi-satellite formation flight simulation system based on HLA is of great significance for the study of complex formation change process in the multi-satellite formation flying. We first design the collaborative multi-satellite formation flight simulation system based on HLA, then study the application of Agent-based modeling technology in the collaborative of multi-satellite formation flight simulation. The key technologies involved the establishment of the satellite relative kinetic model and formation remains adaptive control problem. Therefore, we have designed a state-space model identification-based adaptive decoupling generalized minimum variance controller to solve the problem of precise control of the system. Digital simulation results show that the adaptive control method based on state space model identification can track the desired trajectory in the presence of unknown environmental disturbances and measurement noise and the simulation system can effectively verify Multi-satellite collaborative control method at the same time.
Studies on Compound Control-Based Single-Phase Photovoltaic Inverter
Authors: Xue Peng , Wei Wei , Zhang Bin
Published: August 2013

An inverter arranged in the photovoltaic generating system is required to be with higher working efficiency and lower degree of distortion on waveform. In this thesis, mathematic model of inverter has been given out through an analysis using the structure of two-level inverter, and then put forward a traditional PID control in combination with rerunning control for output waveform from an inverter. It has been proven through simulation effects that a better control precision for output waveform can be given out by this method.
Position Tracking System of Filling Machine Based on Compound Control Strategy
Authors: Wei Zhi Qiang , Jin Dan
Published: August 2013

In view of the complexity and periodic motion of automatic filling machine, a novel compound control strategy based on single neuron PID model reference adaptive control and repetitive control is proposed. Diagonal recurrent neural network (DRNN) is used as on-line identifier of system for the single neuron PID controller to adjust its weights and PID parameters by self-learning and self-adapting. The dynamic state performance can be improved by adaptive PID controller based on DRNN on-line Identification and the steady state performance is improved by modified repetitive controller. Simulation results show that the control system has good ability of restraining disturbances and high position tracking precision and good robustness.
New Method of Single-Phase Photovoltaic Inverter Based on Energy Power Grid Control
Authors: Liu Xiao Yue , Yao Le Le , Yang Jin Biao
Published: August 2013

Nowadays, the use of new energy increasing attention has been paid. In response to the current situation of shortage of energy, people will treat photovoltaic inverter as a new power supply. In order to improve the utilization of solar energy, the single-phase photovoltaic inverter power grid and the public grid operation. It is important that the effective control in the process of grid Inverter for solar. Lack of the PID strategy in the grid control, model reference adaptive control is improved. The method is verified by simulation applied to the reasonableness of the grid control.
A High-Performance Hardware Design for Digital Predistortion System
Authors: Wang Jian , Zeng Zhi Bin
Published: August 2013

Digital predistortion (DPD) is a method widely used to compensate the nonlinearity of power amplifier to improve the transmitting signals. The DPD performance, however, depend heavily on the hardware design on signal integrity, EMI and low additional distortion of downconversion circuit. In this paper, a new high-performance hardware solution for DPD is introduced. Engineering tests show that this hardware design characterizes by high reliability and excellent performance to satisfy the requirements of DPD.
Design and Realization of the Calibration Equipment for Inertial Navigation System by the Control Computer
Authors: Zhao Chao Feng , Li Guo Dong , Wang Xiang Jin , Zhang Zhi Lu , Li Cheng Yu , Kong Qing Bing
Published: August 2013

Aiming at the problem of calibrating the INS in non-laboratory conditions, this thesis proposes the calibration methods by as the core and combined use of double-position directional gyro calibration, four-position horizontal gyro calibration and Schuler circuit accelerometer calibration etc. It builds up the model for scale factor calibrating, controls the inertial platform by the embedded control technique to make it the three-axis turntable state, and uses the Linux OS and C language design control software to design and develop the automatic calibration equipment for the INS. This equipment is simple in operation, easy in use and portable, and therefore can realize automatic calibration in non-laboratory conditions. And the results meet the requirements for guarantee the precision of the system in use.
Efficient and Accurate Testing of On-Chip ADC Based on ATE
Authors: Wei Shu Hua , Dai Lan , Zhang Xiao Bo , Jiang Yan Feng
Published: August 2013

The embedded digital-analog mixed-signal circuit testing has become one of the difficulties to be solved. In this paper, a SoC embedded ADC has been tested based on the Credence Gemini500 verification system. The testing method is studied and verified through the test experiment and results. This testing method is an important reference for general embedded IP core testing.
Gaussian Mixture Model Clustering Based Optimal Location of EV Charging Stations
Authors: Shi Qing Sheng , Cao Yi
Published: August 2013

Building enough charging stations is the only way to let new energy vehicles come into our daily life. While, the cost of building a charging station is very expensive. Therefore, spatial optimal location of charging stations has to be dealt with. The main purpose of this paper is to investigate the spatial optimal location of charging stations using Gaussian Mixture Model clustering and charging requirement spots are taken as the clustering benchmark. The clustering procedure of charging station spatial optimal location is programmed using m-language. Finally, simulation results show the validity of proposed method.
Dissemination Protocol Research for Message Transmission Rapidly
Authors: Qiao Chang Fu , Yin Shou Yi , Ling Li , Cheng Ren Jun , Xu Chang Liang , Wang Jun
Published: August 2013

Dissemination is a data dissemination protocol for wireless sensor network based on TinyOS. The purpose of it is that we can send data to every node reliably Dissemination can reconfigure,query and reprogram nodes easily This article briefs the mechanism of Dissemination,and analyzes its principle. At last, it is applied in practice. Practice shows that, when network traffic is small, Dissemination has good performance, and reliable, simple to deploy, with high practicability and value. But when network is large, its performance is poor. So, based on the specific practice, Dissemination is improved.
Aural Spectrum Analysis for Naval Vessel Radiation Noise
Authors: Xie Jun
Published: August 2013

A passive long wave cochlea model is applied to extract audial feature of naval vessel radiation noise. Based on the model, a two dimensional time space distribution Spectrum of noise signal is calculated. Four one dimensional features with simple form are presented. The experiment results shows that the features based on cochlea model is consistent with auditory perception of noise signal. The approach is a new method to extract feature for passive sonar target recognition.
Design of Antipodal Vivaldi Antenna Array
Authors: Tang Hai Bo , Shui Xiao Zhong
Published: August 2013

Firstly in this paper,an antipodal Vivaldi antenna is designed.The bandwidth is from 6GHz to 18GHz. The simulated results show good electric performance and the voltage standing wave ratio is less than 2 in the whole bandwidth.Secondly depending on this unit,this paper designs two kinds of arrays and estimates their radiation characteristics,respectively.The one array is a 1×8 array and the another array is a X-cross structure array with four elements.
The Calculation Model and Correction Method of Identifying Deflexion of Oil Tank
Authors: Liu Dong Bing , Liu Wen Bin
Published: August 2013

In the paper,using geometry and integral knowledge, the functional relationship is determined between standard oil height and oil storage capacity when oil tank doesnt change position.Then we study that the location of tank can incline in vertical direction furtherly, and compare the theoretical calculation with experimental data .Finally, factual oil storage tank model is discussed.
Research and Application of FPGA-Based Polling Strategy in Ad Hoc Network Data Acquisition System
Authors: Zhao Zheng Peng , Yu Yan Yan , Jiang Zhe , Yang Jun
Published: August 2013

Ad Hoc network has the characteristics of self-organization and dynamic topology, so it can use polling strategy for data collection. In this paper, the data link layer of the Ad Hoc network data acquisition system has been carried out the detailed analysis and study, through the use of polling policy in the access network node to solve the problem of competition for resources and allocation mechanism in the network link, and improve the channel utilization and system stability. The design based on VHDL language to achieve RTL-level description of the Ad Hoc network data acquisition system, and Altera Corporation EP2C35F672C6 as target chip, and in the Quartus II platform 8.0 conducts synthesis, placement, routing, and comprehensive simulation, and finally inDE2 the experimental board download is verified. The entire hardware design is of simple structure, reliable high, real-time, and can be widely used in the field of sensor networks and mobile communications network.
Face Recognition with Single Sample Based on Candide-3 Reconstruction Model
Authors: Deng Nan , Pei Ya Bo , Xu Zheng Guang
Published: August 2013

In this study, we present a method for virtual images generation based on Candide-3 model to increase the number of training samples for the face recognition with single sample, where the Principle Component Analysis is used for feature extraction and the test samples are classified by the method of Support Vector Machine (SVM). Experimental results on from the YaleB and ORL databases show that the recognition rate of the face recognition with single sample can be improved by the proposed method.
Extracting of Five Characteristic Parameters Using in Static Gesture Recognition
Authors: Duan Hong , Luo Yang
Published: August 2013

Proposed a static gesture recognition method for identifying characteristics of the object in combination. With the feature vector composed of five features, such as the number of fingers, gesture outline convex defect characteristics, the length and area of contour and Hu matrix, we adopted the template-matching method to conduct the matching of featured parameters. Experiments show that the method successfully recognized static gestures under complex background and could reduce the impact of environmental change simultaneously.
The Image Steganography Method Based on the Nonlinear Optimization
Authors: Chen Yu , Yang Ren Er , Yuan Min , Mo Jun , Ma Cheng Hong
Published: August 2013

On digital image steganography, the traditional LSB method usually makes the histograms change relatively large after the image steganography; therefore,the hidden information can be detected easily. This paper puts forward a new method based on the nonlinear optimization to determine the best LSB steganography technology of histogram detecting. It can make the histograms total change to be smaller and difficulter to be detected.
Research on Switching Control of Brushless Permanent Magnet Motor for EMA for Aerospace
Authors: Lv Yong Jian , Li Fei , Li Zi Long
Published: August 2013

The switching system is one of the important models which describe the hybrid dynamical systems. Different models and the switching rules are adopted to better describe the motion of the actual complicated systems. Combined with advantages of the PMSM and BLDCM, the paper proposed the switching control strategy for Brushless PM Motor with the rule of output feedback based on switching system theory. Then the linear model of the switching control system was obtained and the stability of it was analyzed. The results of the simulation and the experiment show that the switching control strategy is stable and could effectively improve the efficiency and reduce the torque ripple of the motor in full speed range.
Systems Errors Identification Method of Hull Deformation Data Based on Total Variation Constrained
Authors: Yang Lei , Chen Feng , Zhang Tong Shuang , Li Xiao Yong , Zhou Hai Yuan
Published: August 2013

Based on the analysis of influence factors for hull deformation data, physical models including hull curve deformation, hull torsion deformation and hull athletics deformation were established according to mechanical principle. Considering characteristics of the space instrumentation ship, systems errors identification method based on total variation constrained was provided. First order differential coefficient of deformation data was joined in a constrained equation in the method. Systems errors coefficient and exact value of deformation data were solved through alternating iterations. The simulation result of deformation measured data indicated that identification errors were in consistent with plus errors, and systems errors coefficient was also estimated accurately. This demonstrated that the proposed method is suitable for systems errors identification of hull deformation data.
Research on the Optimal Design of Soccer Robot Based on the Mechanical Analysis
Authors: Han Jian Wen , Hong Lei
Published: August 2013

According to the defects of classical k-means clustering algorithm such as sensitive to the initial clustering center selection, the poor global search ability, falling into the local optimal solution. A differential evolution algorithm which was a kind of a heuristic global optimization algorithm based on population was introduced in this article, then put forward an improved differential evolution algorithm combined with k-means clustering algorithm at the same time. The experiments showed that the method has solved initial centers optimization problem of k-means clustering algorithm well, had a better searching ability,and more effectively improved clustering quality and convergence speed
Bidirectional 2DPCA Based on L1-Norm Maximization
Authors: Zhong Fu Jin
Published: August 2013

In this paper, we propose a simple but effective bidirectional 2DPCA based on L1-norm maximization ((2D)2PCA-L1). Traditional bidirectional 2DPCA is sensitive to outliers for its L2-norm-based least squares criterion, while (2D)2PCA-L1 is robust. Experimental results demonstrate its advantages in the fields of data compression and object recognition.
Research the Intelligent Injection Wells Monolayer Segment Control Strategy
Authors: Zhang Shu Jin
Published: August 2013

Testing and commissioning process for intelligent injection process of production engineering monolayer segment flow have strong non-linear, interlayer interference, time-varying, complex model and other characteristics, using the traditional model-based control strategy can not meet the control requirements, puts forward the new dual-core structure variable spacing of the self-adaptive fuzzy control strategy, the rate of change of flow error and flow error as the controller input, through the sub-fuzzy The Controller Online amend the main fuzzy controller input and output dilation factor of the universe, and the universe with the amount of control variable parameters to variable space adjustment, and simplify the design and implementation of a variable universe fuzzy controller. Simulation results show that the proposed control strategy used in intelligent injection wells in the monolayer segment flow control system, allowing the system to obtain better control performance, and shorten the response time and reduce the overshoot.
Simulation Analysis on DPD Performance with DC Offset
Authors: Zhang Qin , Zeng Zhi Bin
Published: August 2013

DC offset of the input analog signal I and Q of quadrature modulator which is as DAC and RF channel interface will affect bit error rate (BER) of the system, the quality of the emission signals and the overall effect of DPD[. This paper focuses on the influences of non-ideal characteristics quadradure modulator on DPD technology.
Structure Design Draft Tube of Xiaoshankou Hydropower Station
Authors: Kang Ying Bin , Rjap Abdurxt , Huang Kun
Published: August 2013

This The draft tube is one of the main load-bearing structure of the hydropower plant, The hydropower draft tube of Xiaoshankou is an underground space structure, mainly composed by the taper pipe segment, elbows segment and diffusion segment. This paper describe the structure design and calculation process of Xiaoshankou hydropower draft tube, including the draft tube load calculation, structural mechanics just Rigid panels calculate internal force calculation and reinforcement calculation.
The Research on Cooperation Coordination Model of Transboundary Water Pollution
Authors: Sun Dong
Published: August 2013

At first, this paper introduced some related domestic and global researches which are about lake basin transboundary water pollution, and put forward several basic assumptions combining the lake basin situation. Based on this foundation, this paper constructed the minimum cost of the whole region, and proposed the cooperation coordination model of the lake basin transboundary water pollution. Then it took advantage of Poyang lake for empirical analysis, and got the function of pollutant reduction cost and function of environmental damage cost by means of multiple regression analysis with the five main data of Poyang lake from 2001 to 2010. Next, through cooperation coordination model establishment and solution, the paper could get the conclusion that compared with the actual pollution reduction plan the model solution is better. At last, the paper talked about the deficiencies and improvement.
Effect of Nanometer Calcium and Magnesium Oxides Addition on the Cast Microstructure Grain Size of Pipeline Steel
Authors: Wang Jian Ming , Liu Yan , Ding Long Xian , Ma Qian He
Published: August 2013

Nanometer calcium and magnesium oxides were added into molten steel by the carrier method in the experiment. The experiment takes the X80 pipeline steel as the research object and analyses the effect of nanometer calcium and magnesium oxides addition on the cast microstructure grain size. The grain size of the cast microstructure in each sample was measured by the cutting line method. The results show that the nanometer oxides addition has a great influence on the cast microstructure grain size. When adding 0.01 wt% nanoCaO or MgO oxides, the grain size decreases from 0.664 mm to 0.632 mm and 0.457 mm, respectively. When adding 0.02 wt% nanoCaO or MgO oxides, the grain size becomes finer, and the cast microstructure is remarkably refined. In contrast with the grain size of no nanometer oxides addition, the grain size decreases from 0.644 mm to 0.438 mm and 0.389 mm and is refined by 1.47 and 1.66 times, respectively. When adding 0.05 wt% nanoMgO oxides, the grain size does not decrease, but increases to 0.778 mm. The reason is that as the amount of adding oxides increases, the dispersity of the nanometer oxides becomes worse, and the agglomeration of the grains occurs. Therefore, the nanometer oxides can not achieve the role of grain refinement.
Investigation of Laser Parameters Influence of Color Marking on AISI 304 Stainless Steel
Authors: Li Chuan Zeng , Li Jun Ge , Zhou Yun Feng , Xie Hai Rui , Zhu Zuo Qing
Published: August 2013

This paper studies of laser parameters for color marking on AISI 304 stainless steel by using Nd:YAG laser. Different laser parameters can affect metal color profoundly. The experiment focuses on some key parameters, and their optimum laser parameters are as follows: the vector step 0.005mm~0.010mm, the inter-step time 35μs~60μs, laser Q frequency 2KHz~4KHz, laser Q release time 10μs~20μs, scanning space 0.006mm~0.010mm. It is of significance in guiding practical application of laser color marking.
Semiconductor Manufacturing Math Model Based on Analytic Hierarchy Process
Authors: Xiao Can Jun , Huang Jun Bing , Jin Yao
Published: August 2013

On the basis of brief introduction of Analytic Hierarchy Process algorithms and its research status in flow shop, a kind of AHP-based scheduling Evaluation method is proposed for semiconductor manufacturing line. An expert's experience and judgment are syncretized into hierarchy structure for making an integrated analysis and judgment towards the considered problem. An example of Intel real-world data evaluation process is used to explain this method. The result shows that the approach made the scheduling approach selection complete, scientific and precise.
Enterprise Merger of Financial Risk Management and Protection
Authors: Deng Hong Mei
Published: August 2013

The acquisition is a effective way of enterprise expand market share, improving the competition ability and economic benefit, however, the risk passes through the entire merger and acquisition activity, including financial risk is a successful merger or not. Enterprise merger is a kind of high yield, high risk investment activities. Especially enterprise merger uncertainty characteristics which greatly increased the risk of mergers and acquisitions. The empirical results show that enterprise merger failure rate is very high. How to guard against the risk, increase the probability of successful merger, almost become involved in the enterprise merger each common concern. This article through the study of potential merger of the financial risk, puts forward the prevention measures, and we hope it can provide reference for m&a standard mergers and acquisitions.
A Novel Approach to Visualize Co-Authorship and Co-Contribution of Research
Authors: Jing Ming , Li Xue Qing
Published: August 2013

Text visualization method depends on the contents of documents to analyze patterns and abstract characters. However, visualizing the scholar text as an understandable view for users is a challenging. We propose an interactive model to collect, analyse and visualize co-authoring data of publication information. We divide the author to students and advisors. This approach can be used for observe the research performance of students and advisor separately. Especially, we analyse the contribution of each author by presenting the quantity and quality of publications. Meanwhile, the rank of the most important authors is shown in the interface which is designed to access publication details easily. Our conception comes from our experiences designing the Scholar Browser for a university which displays research quality.
Research on the Freight Station Layout
Authors: Du Miao , Qin Yong , Wang Zi Yang , Zhao Zhong Xin , Yu Hong Fei , Jiang Hao
Published: August 2013

At present, there are many problems existing in railway stations, such as excessive numbers and over-crowded layout, which seriously affect the scale benefit generation and rapid expansion of rail freight capacity. Aimed at these problems, a Mixed Integer programming model is proposed. Taking Lanzhou train operation depot for example, applying lingo software, the layout of freight station is obtained.
One-Factor and Two-Factor Dynamic Hedging of Futures Contracts with Different Maturities for Emissions Allowances
Authors: Kai Chang , Yu Zhen
Published: August 2013

Unexpected market information have a different speed change to market price of futures contracts with different maturities, and the paper estimates one-factor and two-factor dynamics hedge ratios and hedging effectiveness evaluation. One-factor and two-factor hedge ratios of futures contracts with different maturities for emissions allowances have time-varying trends. Compared with one-factor hedging, with an increase of span period, market participations can achieve a slight effect on risk reduction of portfolio revenues of futures contracts with different maturities by using two-factor hedge ratios, and especially two-factor hedging policy exhibits better hedging effectiveness for longer-term span period of futures contracts with different maturities for emissions allowances.
The Design and Implementation of GIS Logistics Distribution System Considering Traffic Information
Authors: Zhu Xiao Fei , Liu Tao , Qiao Pei Li
Published: August 2013

We put forward the combination of traffic information and gis logistics distribution system, which has a comprehensive and integrated consideration of the cost shift, road congestion, road blocks, odd/even license plate restrictions and other transportation traffic limit line on the logistics cost factors. based on supermap software platform, with visual c++6.0 as its development language, we focus on solving the vehicle routing problem (vrp). the development of the gis logistics and distribution system v1.0 software is used to compensate for lack of traditional gis software, which can greatly reduce the time and costs of logistics and distribution.
The Construction of Agricultural Information Service Support and Information Management System
Authors: Niu Xiang Jie , Xu Jian
Published: August 2013

The agriculture information service support and information management system is the provider of agriculture information, which can provide large amount of effective agriculture products information. Through the effective management of information, it is able to regulate the process of production and sales of agricultural products. The rural grassroots information service management system is based on B/S (Browser/Server) distribution network technology, application system engineering thoughts and software technology. The system can provide some information security protection mechanisms to ensure the safety during operation. The establishment and application of the system can greatly improve the rural information service level to promote the rural information development.
The Research of Educational Resource Management System Based on Cloud Computing
Authors: Zhao Gang , Ye Qiu Xu , Chen Li Juan
Published: August 2013

The sharing and optimized configuration of educational information resources is very important of the realization of fair education. Cloud Computing is a new service computing model, which can integrate, manage and allocate the computing resources distributed. In this paper, we introduce a system based on cloud computing that can make full use of the educational information resources. This system is to face the challenge that resource developers in different areas construct repeatedly without communication. It can also realize the integration of resources in different areas by utilizing cloud computing technology.
A Bayesian Network Model for Aeration Management of Stored Grain
Authors: Sun Ling , Zhu Ze Sheng
Published: August 2013

This paper discuses a Bayesian-network method for building an aeration management model for high performance management of stored grain. This model is designed and implemented with a dividing-layer architecture, which is used to complete aeration management of a number of stored grain warehouses in order to increase stored grain safety and to decrease stored grain management cost.
The Construction and Simulation Analysis of Three-Qubit Hxx Chain Refrigerator Based on Quantum Entangled States
Authors: Huang Xing Kui
Published: August 2013

Quantum entangled state theory is combined with quantum thermodynamics theory to build quantum entangled state heat engine. The basic nature of three-qubit Hxx chain, and all parameters of the orbit are analyzed. Energy model of quantum entangled state refrigerator in working process is taken as as a theoretical basis to construct three qubits Hxx chain refrigerator based on quantum entangled states. The working nature of the new quantum entangled state refrigerator under different field strength is studied. Compaired with two-qubit Hxxx chain refrigerator based on quantum entangled states and mapping analysis, the working efficiency of three qubits Hxx chain refrigerator based on quantum entangled states is much higher when the field strength is not zero and its working state is more stable.
Analysis on the Effect of Low Carbon Building on Ecological Urban Construction
Authors: Yang Ying
Published: August 2013

Low carbon building is one of the important goals of constructing ecological city, which aims at energetically developing green building resources with high technology and low energy consumption on the basis of reducing carbon dioxide emissions within building materials and construction cycle. Firstly, this paper analyzes the connotation of low carbon buildings. And then, on the basis of life cycle and materials selection of low carbon building, this paper makes a correlation analysis on the ecological city construction and low carbon building. Next, based on this, the model of analyzing the effect of low carbon building on ecological urban construction has been built by using the grey correlation degree. Thus it provides theoretical basis and practice guidance for the application of low carbon building in the ecological city construction in China and other developing countries.
The Research on Electronic Smart Clutch Operating System
Authors: Ruan Guan Qiang , Liu Jian Cun , Cheng Wen Chao
Published: August 2013

Today, the sensors are used in the different fields, especially in the automobiles and Aeronautics and Astronautics industry. Speed sensor in the car is very useful . The engine speed sensor and speed sensor are used to collect the movement of the car, which Can intelligently judge drivers true intentions of the operation, in accordance with a set of systems, intelligently solve the problem that driver can not reasonably Use the clutch. Through intelligent systems, controlling the clutch can effectively reduce the fuel consumption of the car.The system enables more intelligent operation of the vehicle, improved shift quality of the car, to improve vehicle handling and stability. Operating system with high intelligent and saving fuel is easy to operate. The operating system can effectively prevent the occurrence of car flameout. The operating system can adapt to all kinds of driver to use, especially for beginners and handicapped people to bring the gospel.
Architecture Design and Implementation of Real-Time Tracking System for Vehicular Terminal
Authors: Chen Hai
Published: August 2013

To meet enterprise-class application, the paper constructs a general distributed value-added logistics services platform for real-time tracking and querying the goods during storage and shipping process. Based on RFID, GPS and GSM/GPRS to improve storage and transport efficiency, the whole project consists of vehicle-mounted terminals, control center, and warehouse management system. Focused on the onboard system, architecture design and software implementation of terminals are given. The result shows that the system can provide some references for addressing the transparency of the third party logistics and efficient collaboration.
Research on Sensing Detection Technology in the Automotive Electronic Program Design
Authors: Luo Li
Published: August 2013

with the rapid development of information technology, the deepening of sensing detection and automobile electronic technology, the safety and reliability of vehicle electronic control has been the core problem to be solved in the automotive electronic control system. Sensor detection technology has become an important part of the development of automotive technology. This paper first analyzes the automobile electronic detection technology and sensing detection applications. Based on this, the theoretical framework principle model of automotive electronic software program design has been further deepened, so as to take the electronic program design of automotive anti-collision radar as the empirical analysis example. Finally, the optimization of automotive electronic program software design provides scientific basis and practice way to a certain extent in this field research.