bluuebunny/crossref_metadata_2025 huggingface dataset:
A 4-Bit 5 GS/s Current Steering DAC Integrated Circuit
Authors: Li Weng Yuan , Jiang Teng Xiao
Published: February 2014

In order to satisfy the higher and higher transmission rate and broadband requirement of modern communication, a 4-bit 5 GS/s digital-to-analog converter (DAC) integrated circuit is presented. The DAC circuit is based on current steering architecture and segmented with a 4 bit unary. The circuit is designed and analyzed in TSMC 0.18 μm CMOS technology. The chip size is 0.675 mm 0.525 mm. Simulation results show that the maximum integral nonlinearity (INL) is 0.15 LSB. The DAC can achieve a spurious-free dynamic range (SFDR) of 22.76 dB under a clock frequency of 5 GHz with an input signal frequency of 250 MHz, while the power consumption is 11.6 mW.
Research on Indirect Charging Radio Frequency Explosive Magnetic Flux Compression Generator
Authors: Li Hong Mei , Wang Jin Yue , Xing Li Kun , Yang Tie Xin
Published: February 2014

It is necessary to make full use of explosive energy and reduce the loss of unnecessary energy when we study high-powered radio frequency explosive magnetic flux compression generator . Therefore, this paper proposed that indirect charging was used in radio frequency explosive magnetic flux compression generator. Based on the equivalent circuit theory, we studied the interaction of two loops in the case of indirect charging. The numerical simulation results showed that we must choose appropriate circuit parameters of charging in order to guarantee the radio frequency explosive magnetic flux compression generator to run steadily.
A 8GHz Differential Comparator for Ultra High Speed ADC in 90nm CMOS Technology
Authors: Zhu Zhong Ying , Hong Hui , Li Shi Liang
Published: February 2014

A high speed, low offset fully differential comparator for high-speed analog-to-digital converter which can work at a sampling rate of 8GS/s is presented in this paper. The three-stage pre-amplifiers in the improved comparator structure is proposed to ameliorate its gain. The positive feedback regeneration circuit and the improved output buffer are used to ameliorate the comparator bandwidth. Operating with an input sine signal of 1GHz frequency, the circuit can oversample up to 8GS/s with 5bits of resolution. The simulated offset voltage of the comparator by Monte Carlo at 8GHz clock is 5.09mV.
Building Distance Education System Based on Cloud Computing
Authors: Zhao Hong Yu , Zhang Ping , Zhang Hong , Zhang Xue Yan
Published: February 2014

This paper describes overall framework of distance education system based on cloud computing. First, it points out the construction of cloud data centers. Second, it points out the construction of storage Platform. Third, it points out the construction of search engines and search navigation platform for teaching resources.
Multi-Modality Video Scene Segmentation Algorithm with Shot Force Competition
Authors: Xiang Yun Zhu
Published: February 2014

In order to quickly and effectively segment the video scene, a multi-modality video scene segmentation algorithm with shot force competition is proposed in this paper. This method is take full account of temporal associated co-occurrence of multimodal media data, to calculate the similarity between video shot by merging the video low-level features, then go to the video scene segmentation based on the judgment method of shot competition. The authors experiments show that the video scene can be efficiently separated by the method proposed in the paper.
Research on the Digital City Geospatial Framework Construction
Authors: Liu Rong , Liu Yang , Huang Zheng
Published: February 2014

With the development of urbanization process, the city scale has become more extended. The traditional city manage method can not meet the request of the modern city management. As the "digital China" stratagem advanced, "Digital City" appeared. The" Digital City " as a symbol of the city informatization construction is quickly developing. The network infrastructure and spatial information infrastructure both are the most important infrastructure in the digital city construction, and the geo-spatial framework is an important composition part of the spatial information infrastructure and the foundation supporting platform of the economic society informatization development. The paper explores the process of construction digital city geospatial framework.
Analysis of River Regime Data Based on the Improved Apriori Algorithm
Authors: Cang Yi Qian , Zhou Xiao Feng , Zhou Fa Chao , Gu Ai Hua , Liu Tian , Cao Zhen
Published: February 2014

With the informatization development of water conservancy, the data of water conservancy increased gradually. The data of river regime comes up with the features of real-time and historicity. Therefore, the data has the character of diversity, large and abundant contents. Because of the restrict of the classic Apriori algorithm, many researchers cant meet the requirements of those large data analysis. So, this thesis explained the improvements of the classic Apriori algorithm, designed and elaborated the effectiveness of association rules in river regime resource.
Research and Application on Reports Function of Protection Equipment Management Information System
Authors: Wu Chun Liang , Hua Shen , Wang Shan Dan
Published: February 2014

The main task of the protection equipment management information system is statistical analysis, which requires presenting the analytical results in the form of reports. Therefore, the statistical analysis module of the system contains the reports of Evaluation Code with complex business logic and stable structure, as well as common analysis reports with simple business logic and flexible structure. As the growth of the business complexity and the requirements for diversification, existing reporting mode cannot adapt to the system. The reports component using B/S architecture, which adopts the independent engine mechanism, has become the developing trend of statistical reports.
The Design of Public Key Cryptography for Key Exchange Base on Multivariate Equations
Authors: Liu Chang Ming , Zhao Lei , Sun Yan Jun
Published: February 2014

. Public key encryption method contrasts with traditional encryption method has the advantage of very powerful, especially in applications and network security. With the development of these years public key encryption method is a mature, open, standard security mechanism for network encryption and digital signatures. The key exchange plays an important role in cryptography. It is an important research issue that how to ensure the security of key exchange. In this paper we present a key exchange method based on multivariate public key cryptography.
Research on the Domination-Stability of Network G2
Authors: Cao Jian Xiang , Jiang Zheng Tao , Xin Feng
Published: February 2014

It has been known that an interconnection network can be modeled by a connected graph whose vertices represent sites of the network and whose edges represent physical communication links. Being the underlying theory of network, graph theory can be used to investigate network issues. In this paper we consider two parameters of graph: the domination number and bondage number b (G). These parameters measure to some extent the robustness of an interconnection network with respect to link failures. By constructing a family of minimum dominating sets we calculate the domination number and bondage number of graph G2.
A DDoS Detection Approach Based on CNN in Cloud Computing
Authors: Yang Zhong Xue , Qin Xiao Lin , Li Wen Rui , Yang Ying Jie
Published: February 2014

A novel DDoS detection approach based on Cellular Neural Network (CNN) model in cloud computing is proposed in this paper. Cloud computing is a new generation of computation and information platform, which faces many security issues owing to the characteristics such as widely distributed and heterogeneous environment, voluminous, noisy and volatile data, difficulty in communication, changing attack patterns. CNN is an artificial neural network which features a multi-dimensional array of neurons and local interconnections among cells and CNN can be used to solve the cloud security difficulties according to the nature of non-linear and dynamic. RPLA and Tabu optimized algorithm is employed to learn the CNN classifier templates and bias for DDoS intrusion detection in cloud computing. Experiments on DDoS attacks detection show that whether RPLA-CNN or Tabu-CNN models are effective for DDoS Attacks detection. Results show that CNN model for DDoS attacks detection in cloud computing exhibits an excellent performance with the higher attack detection rate with lower false positive rate.
A Trustworthy Software Designing Approach and Credibility Evaluation
Authors: Zhu Jian Xin
Published: February 2014

Aiming at the problem that the trust chain of TCG cannot insure the dynamic trustworthiness, this paper expands the trust chain and brings in the the trust chain of the trustworthy software driven by trustworthy engine.
An Initial Study for PET Imaging Simulation
Authors: Hu Yang Sheng , Zhang Jun , Cui Rui , Xiang Yan , Ma Lei , Yi San Li , Shao Dang Guo , He Jian Feng
Published: February 2014

Simulation play an important role in the research of PET/CT imaging technology. In this paper, GATE (Geant4 Application Tomography Emission) software packages and NCAT(dynamic NURBS-based cardiac-torso phantom) were used to simulate GE ST PET/CT imaging. GATE provides abundant of functions to simulate both PET/CT imaging procedure and geometric phantom generation. NCAT can generate voxlised body torso phantom. Three different kinds of digital phantoms were designed and generated for PET/CT imaging simulation. The simulation output of GATE was converted to the data format that the STIR (Software for Tomographic Image Reconstruction) requires to reconstruct image by the OSEM (ordered subsets expectation-maximization) algorithm. The experiment results validate that GATE and NCAT are able to simulate PET/CT imaging.
A Research of the Application of the RFID in the Library Management
Authors: Wang Ji Kun , Hu Xing Zhi , Li Xue Zhe , Ding Fei Ji
Published: February 2014

As the application of the information network technology continuously extended, library management service platform is experiencing a shift to the information service system. In the library information management field, researchers are seeking a library identification system which is more convenient and comprehensive. Under the circumstance of the information technology conditions, Radio Frequency Identification (RFID) technology completes the automatic identification of the electronic identification tags--the two-dimensional code. The RFID technology is a contactless scanning recognition technology. And the core technology of RFID can be described as follows: using two-dimensional code as the filter identification tool according to backup data of the book management.
Algorithm for Automatic Deciphering of Mono-Alphabetical Substituted Cipher Realized in MS Excel Spreadsheet
Authors: Hubalovsky Stepan , Musilek Michal
Published: February 2014

The mono-alphabetical substituted cipher is a cipher where one-to-one mapping is used to substitute each of the characters of the plaintext by a corresponding character of the ciphertext. One of the possibility, how solve the mono-alphabetical substituted text is frequency analysis of the single letters and frequency analysis of the bigrams of the ciphertext. The paper presents algorithm for automatic deciphering of the mono-alphabetical substituted ciphertext. Computer simulation model of the algorithm is realized in MS Excel Spreadsheet. The computer simulation enables deciphering of ciphertext of different languages.
The Security Analysis of WLAN Protocol Based on 802.11i
Authors: Xia Wen Yu , Wu Kai Jun , Zhou Liang
Published: February 2014

This article briefly describes the weaknesses of WEP,which is previous generation wireless LAN security standard, then introduces the new generation of wireless network security standard 802.11i. Then the article introduces the process of TKIP and CCMP encryption. We use experiments to compare TKIP with CCMP about protocol security. Ultimately we conclude that CCMP encryption is safer.
Research on Uighur Web Pages Classification
Authors: Xu Gui Xian
Published: February 2014

Uighur web pages classification is meaningful for the Uighur information processing. In this paper, we propose a classification approach for Uighur web pages. It utilizes the combination of two methods to classify the Uighur web pages into the predefined classes. One is the classification method based on Column Navigator of web page. The other is the content classification method based on the classes feature dictionary. Based on the proposed approach, we design the classification system of Uighur web pages. The experimental results present that the system has better performance for Uighur web pages classification. It is useful and helpful for the construction of high-quality Uighur corpus, Uighur information retrieval as well as Uighur text mining.
Research on the Network Congestion Control Based on GA-PSO Path Optimization
Authors: Ren Jin Xia , Guo Hao Yang
Published: February 2014

Based on the integration of the genetic algorithm and particle swarm algorithm, a network congestion control method is proposed for path optimization, which takes the load balanced distribution function and the resource consumption function as optimization target and optimizes path under the condition of meeting a number of QoS metrics such as bandwidth, delay, expense. Aiming at avoidance of network congestion, the approach attempt to minimize the network resource consumption and balance the distribution of network load. Simulation results show that the method is effective and reliable.
Extension of VIKOR Method for Multi-Attribute Group Decision Making with Incomplete Weights
Authors: Xu Chen Guang , Liu Dong Xiao , Li Min
Published: February 2014

In this paper, we First utilize the induced interval-valued intuitionistic fuzzy hybrid averaging (I-IIFHA) operator to aggregate all individual interval-valued intuitionistic fuzzy decision matrices provided by the decision makers into a collective interval-valued intuitionistic fuzzy decision matrix. Based on the basic ideal of traditional VIKOR method, we establish an optimization model to determine the weights of attributes. Then, calculation steps based on the collective interval-valued intuitionistic fuzzy decision matrix and traditional VIKOR method for solving the MAGDM problems with interval-valued intuitionistic fuzzy assessments and partially known weight information are given. Finally, a numerical example is used to illustrate the applicability of the proposed approach.
Simulated Annealing Algorithm Improved BP Learning Algorithm
Authors: Lin Ying Jian , Chen Xiao Ji
Published: February 2014

BP learning algorithm has advantage of simple structure, easy to implement and so on, it has gained wide application in the malfunction diagnosis and pattern recognition etc.. For BP algorithm is easy to fall into local minima shortcoming cites simulated annealing algorithm. Firstly, study the basic idea of BP learning algorithm and its simple mathematical representation; Then, research simulated annealing algorithm theory and annealing processes; Finally, the study makes BP algorithm combine with simulated annealing algorithm to form a hybrid optimization algorithm of simulated annealing algorithm based on genetic and improved BP algorithm, and gives specific calculation steps. The results show that the content of this study give full play to their respective advantages of two algorithms, make best use of the advantages and bypass the disadvantages, whether in academic or in the application it has a very important significance.
Design of the Miniature Programmable Logic Controller Based on STM32
Authors: Liu Yong , Li Xiao Meng , Zhang Shu Ce , Wang Xue Jun , Tao Xue Heng , Lu Jin Shi
Published: February 2014

In order to reduce production cost and simplify programming, the miniature programmable logic controller is designed, which realized restructure of the master control module based on STM32, and completed the control for external actuators through digital input and output module. Upper PC machine is used to monitor the running status of the controller with exchanging data through serial communication module.
The Implementation and Application of Image Adaptive Dictionary Algorithm Based on Manifold
Authors: Jin Ju Bo , Liu Yu Xi
Published: February 2014

As an important field of image processing, image restoration has ever been a hot research topic. Our paper will focus on the adpative dictionary. We propose a novel improved adaptived dictionary learning algorithm. Utilizing the thoughts of manifold, for each atom in dictionry, we calculate the principal components of responding representaion errors as the tangent vector of the atom, which improves the representaion ability of dicitonary. Meanwhile, dictionary learned from the origin image is better at image denoising than adpative dictionary.
Link Quality and MAC-Overhead Aware Predictive Preemptive Multipath Routing Protocol for Mobile Ad Hoc Networks
Authors: Cherif Moussa Ali , Feraoun Mohamed Kamel , Hacene Sofiane Boukli
Published: February 2014

In Ad Hoc networks, route failure may occur due to less received power, mobility, congestion and node failures. Many approaches have been proposed in literature to solve this problem, where a node predicts pre-emptively the route failure that occurs with the less received power. However, these approaches encounter some difficulties, especially in scenario without mobility where route failures may arise. In this paper, we propose an improvement of AOMDV protocol called LO-PPAOMDV (Link Quality and MAC-Overhead aware Predictive Preemptive AOMDV). This protocol is based on new metric combine two routing metrics (Link Quality, MAC Overhead) between each node and one hop neighbor. Also we propose a cross-layer networking mechanism to distinguish between both situations, failures due to congestion or mobility, and consequently avoiding unnecessary route repair process. The LO-PPAOMDV was implemented using NS-2. The simulation results show that our approach improves the overall performance of the network. It reduces the average end to end delay, the routing overhead, and increases the throughput and packet delivery fraction of the network.
The Preparation and Characterization of the Mesoporous Poly(bisphenol-A carbonate) – Silica Nanocomposites
Authors: Li Rui Rui , Shi Yue , Zu Lei , Lian Hui Qin , Liu Yang , Cui Xiu Guo
Published: February 2014

The mesoporous polycarbonate-silica nanocomposite materials were synthesized through the modified sol-gel approach under acidic condition. The specific surface area, pore diameter and pore volume of polycarbonate-silica could be controlled by changing the acidity of the synthesis system. The polycarbonate-silica possess an irregular block morphology according to the scanning electron microscopy observations. With decreasing the pH value of the synthesis system, the specific surface area and pore diameter of polycarbonate-silica were raised but the pore volume was reduced. The maximum specific surface area of polycarbonate-silica was 701.71m2/g which presented by the results of Nitrogen adsorptiondesorption isotherms.
Design and Implementation of Dormitory Disciplinary Monitoring and Management System
Authors: Su Xiang Jun , Guo Guan Qi , Liu Liang Ji
Published: February 2014

Using NRF905 wireless data transmission and STM32 microprocessor chips, a dormitory disciplinary monitoring and management system is designed. It can be real-time monitoring of each bedroom sound information and smoke information. Through the rational design of data frame structure, the system power consumption is minimal, with lowest system cost and ease of expansion.
A Framework for Virtual Assembly Based on AR Environments
Authors: Gao Kang , Xu Hai Lin , Zhang De Ming , Ouyang Zhuang , Wei Cheng Yang
Published: February 2014

We had present a generic software framework introducing augmented reality technology into the virtual assembly system. The framework is built by the means of integrating OSG and osgART into the MFC application framework. On the basis, we developed an assembly operation system. We showcased the example applications, demonstrating the new possibilities created by augmented assembly.
Literature Review on Suitability Monitoring of Emerging Technology Transfer for Sustainable Development
Authors: Feng Xiu Zhen , Li Meng
Published: February 2014

Based on literature review from both perspectives between emerging technology transfer and sustainable development, this paper conducts a study on identifying some fundamental components and approaches. The research results are significantly important for further modeling on suitability monitoring related with emerging technology transfer, as well as extending research scope on suitability monitoring modeling.
A Diversity-Guided Particle Swarm Optimization Method for Blind Source Separation
Authors: Wei Shuang , Jiang De Fu , Gao Yang
Published: February 2014

This paper presents a diversity-guided Particle swarm optimization (PSO) algorithm to resolve the Blind source separation (BSS) problem. Because the independent component analysis (ICA) approach, a popular method for the BSS problem, has a shortcoming of premature convergence during the optimization process, the proposed PSO algorithm aims to improve this issue by using the diversity calculation to avoid trapping in the local optima. In the experiment, the performance of the proposed PSO algorithm for the BSS problem has been investigated and the results are compared with the conventional PSO algorithm. It shows that the proposed PSO algorithm outperforms the conventional PSO algorithm.
Multiple Access Acquisition Technique Based on CAZAC Sequences in OFDM System
Authors: Huang Chang Jiang , Hua Yu , Hu Yong Hui , Xiang Yu
Published: February 2014

The sliding correlation acquisition technique, which is based on CAZAC sequences in OFDM time-domain multiple access, is proposed and verified. This technique takes advantage of the characteristics of good auto-correlation and cross-correlation characteristics of CAZAC sequences in time domain and achieves the purpose of multiple access discrimination by the different correlation peaks. Whats more, this technique can increase acquisition performance by multiple frames adding up in a receiver according to the receivers demand. The simulation in AWGN channel shows that the technique is feasible and effective in time-domain signal acquisition in OFDM system.
Monitoring and Control System Design and Implementation of Emulational Transformer Substation Based on the MCGS
Authors: Li Run Sheng , Fan Ai Long
Published: February 2014

This paper describes the use of configuration software MCGS as a platform to achieve the simulation data of transformation substation monitoring system and to achieve monitoring capabilities. It includes designing the interface of simulation system, creating the database, arranging the operation process, etc., and thus achieves the switching operation of substation system, failure demo, data display and record. The whole simulation system is convenient and simple to use, and can be applied to the practice of teaching and on-site training.
The Design and Implementation of Intelligent High-Speed Disk Storage Protocols
Authors: Shen Jin Xing
Published: February 2014

In this paper, through the analysis of the redundant array of independent disks system (RAID), storage area network system (SAN), network storage system (NAS), based on RAID on the system FPGA is used to design a set of intelligent high speed disk storage protocol, through the test and analysis can meet the continuous data acquisition, the real-time data storage needs, in the software through providing high access speed increases memory buffer, large storage capacity and higher data security.
Building Complex Network Similar to Facebook
Authors: Guo Dong Wei , Meng Xiang Yan , Hou Cai Fang
Published: February 2014

Social networks have been developed rapidly, especially for Facebook which is very popular with 10 billion users. It is a considerable significant job to build complex network similar to Facebook. There are many modeling methods of complex networks but which cant describe characteristics similar to Facebook. This paper provide a building method of complex networks with tunable clustering coefficient and community strength based on BA network model to imitate Facebook. The strategies of edge adding based on link-via-triangular, link-via-BA and link-via-type are used to build a complex network with tunable clustering coefficient and community strength. Under different parameters, statistical properties of the complex network model are analyzed. The differences and similarities are studied among complex network model proposed by this paper and real social network on Facebook. It is found that the network characteristics of the network model and real social network on Facebook are similar under some specific parameters. It is proved that the building method of complex networks is feasible.
Automatic Manufacturing Cloud Service Composition Based on AI Plan
Authors: Zhong Pei Si , Zhu Shao Qi , Huang De Jie , Xin Hai Liang
Published: February 2014

Manufacturing cloud service composition is the key way to improve the utilization of manufacturing resources and manufacturing capabilities, realize added value and efficiency of manufacturing resources and manufacturing capabilities. It has great significance on cloud manufacturing implementation and carry. Therefore, the paper presents automatic forwarding search method called AMCSC-HFS for manufacturing cloud service composition based on AI plan. The main purpose is to support meeting the actual need of large-scale and dynamic cloud manufacturing cloud service environment.
The Influence of Laser Treatment and the Application of Reduced Pressure Force Piston Rings on the Engine Exhaust Emissions under the Conditions of Engine Lubrication with Different Engine Oils
Authors: Merkisz Jerzy , Mizera Jaroslaw , Bajerlein Maciej , Rymaniak Lukasz , Maj Piotr
Published: February 2014

The paper discusses the investigations on combustion engines that aim at the evaluation of the influence of engine design modifications on the exhaust emissions under application of lubricants of different physicochemical parameters. In the engines the authors applied laser treated cylinder liners, piston rings of reduced pressure force on the cylinder liner and optimized the assembling clearances in the slide bearings. The research was carried out in accordance with the ESC and ELR compliant procedures using different engine lubricants. The measurement series were performed for diesel engines of the capacity of 1.3 dm3of the power outputs of 51 kW and 66 kW. The tested objects were fitted with aftertreatment systems (oxycat and DPF filter).
Exact Solutions for the Fractional Time-Dependent Oldroyd-B Fluid Model Subject to a Constantly Accelerated Shear Stress
Authors: Li Chun Rui , Zheng Lian Cun
Published: February 2014

In this paper, based on the fractional model, we present an investigation on the couette flow of a generalized Oldroyd-B fluid within an infinite cylinder subject to a time-dependent shear stress which is affected by the internal constantly decelerated pressure gradient. By using the fractional derivatives Laplace and finite Hankel transforms, the obtained solutions for the velocity field and shear stress, written in terms of generalized R function, are presented the similar characteristics with Newtonian and non-Newtonian fluids. Moreover, the effects of various parameters are systematically analyzed.
The Development Situation of Selective Laser Melting Metal Powder Based on 3D Printing
Authors: Zhang Chun Yu , Ren Yun Peng , Chen Xian Shuai
Published: February 2014

This paper make a review of some researches on selective laser melting, including its history, materials, working principle, industry use and working processes. Meanwhile, it points out that the development potential of the Selective Laser Melting and its prospects.
Regression Model and Control in Experimental Mechanical Processes
Authors: Oliveira Sant’Anna Ângelo Márcio , Filho Danilo Marcondes
Published: February 2014

The use of the regression model is usually applied in experimental mechanics processes and allowing for modeling the relationship between one or more process variables. Besides, the regression models are used for monitoring of response variables as function of one or more process variables. The scheme is based on the residuals deviance from regression model for detecting any disturbance in the control variables. This paper presents the control charts from modeling of an experimental mechanic industrial processes that involve count variables. We illustrated the performance of scheme to case study based on real process.
Relations of Lift and Drag Coefficients of Flow around Flat Plate
Authors: Jiang Hai Bo , Li Yan Ru , Cheng Zhong Qing
Published: February 2014

In this paper, when Reynolds number is within the range of 10000 to 1000000, the horizontal component of the total pressure of flow around flat plate at high angle of attack was regarded as lift of high angle of attack, and the vertical component was regarded as drag of high angle of attack. The horizontal component of total pressure at small angle of attack was regarded as shape drag, and the total drag coefficient at small angle of attack was considered to the sum of the shape drag and frictional drag at zero angle of attack. For the two states of large and small angle of attack, the application scopes of the formulas of lift and drag coefficients were given. Final, the relations of lift and drag coefficients were obtained by eliminating all angles of attack. Research results show that lift - drag curve of small angles of attack is parabola, and the lift - drag curve of high angles of attack is circle.
A Feasibility Study of the Material Removal Rate of the Conical End-Face of the Optical Fiber under Polishing
Authors: Tsai Ying Chien , Huang Guang Miao , Chen Jun Hong , Her Inn Chyn
Published: February 2014

The surfaces of the microlenses at the conical end-faces of optical fibers require high quality to keep the best performance of laser beam delivery. The polishing parameters play an important role to get the best quality of the microlenses. Most of the past researches study on the polishing parameters of flat surfaces. In this study, the polishing area of the conical end-face of the optical fiber is varied during fabrication. The relation between removed volume and removed thickness is built to determine the material removal rate. An experiment is carried out and the results show that the first two spinning turns are much effective for polishing under the parameters of the experiment.
Regular Hexagonal Grid Single-Layer Cylindrical Latticed Shell Parametric Design
Authors: Wang Qiao Sha , Lu Xiao Yang , Chen Shi Ying
Published: February 2014

Hexagonal grid cylindrical latticed shell structure is proposed, due to honeycomb structure (although the hexagon structure) is the most effective structure on save the building materials. As a result of the shell structure always with numerous bars, the distribution of internal force and the design of bars often rely on many parameters, likes the span of the structure, the rise-span ratio of the structure, the size of mesh etc., the large scaled finite element software ANSYS parametric design language ANSYS Parametric Design Language (APDL) be used to establish the model of hexagonal grid single-layer cylindrical reticulated shell. The optimization design also was done to found whether the model was a feasibility one. The analysis process shows that the parametric design method provides great convenience for the design of the structure.
Rapid Defect Reconstruction Based on Genetic Algorithm and Similar Model in Remote Field Eddy Current Non-Destructive Testing
Authors: Xu Xiao Jie , Pei Wen Lin
Published: February 2014

Defect reconstruction of remote field eddy current belonged to electromagnetic inverse problem in materia Non-Destructive Testing. In view of disadvantages in present defect reconstruction methods, such as over-long time or excessive need for training samples, a new defect reconstruction method based on similar model and genetic algorithm was investigated as follows: similar model between non-axisymetric defect and axisymetric defect was represented, and proportionality factor was deduced by skin depth equation. As a result, the time-consuming forward problem solution in defect reconstruction, which using 3D finite element computation conventionally, was simplified to 2D finite element computation. At the same time, a method designed to accelerate convergence of genetic algorithm was adopted, and more times saving were obtained. Computation results show that, total defect reconstruction time is reduced to 7.6%, compared with directly 3D finite elemet computation, while reconstruction accuracy remains almost the same.
Stress Analysis and Optimization Design of Pressure Vessel of Underwater Gamma Spectrometer
Authors: Gao Feng , Zhang Jian Guo , Yang Fang Fang
Published: February 2014

Pressure vessel makes the underwater gamma spectrometer can operation in underwater environment. In this paper, a kind of cylindrical pressure vessel has been simulated and analyzed using CAD software named Solidworks. Analysis results show the end covers are much thicker than the side wall to satisfy the same design safety factor and the centers of the end covers are the stress concentration areas. Further more, a 2× 2 LaBr3: Ce scintillation detector and a series of pressure vessels with various design safety factors and same inner space have been simulated by Monte Carlo code MCNP. Calculation indicates that the thicker the shell, the lower the detection efficiency. Further more, calculation shows the impact of the pressure vessel on detection efficiency of underwater gamma spectrometer varies with the photon energy. The law is that the higher the photon energy, the lower the influence on the detection efficiency.
Subjective and Objective Quantificational Description of Vehicle Interior Noise during Acceleration
Authors: Jiang Ji Guang , Zeng Yue
Published: February 2014

In 8 domestic car smooth acceleration to 80km/h when rear seat operator of ear noise samples as the evaluation object at idle condition, Cluster analysis theory, the subjective evaluation irritability of vehicle interior sound quality rating test method; Through the calculation of main psychoacoustic parameters all samples obtained value, the subjective evaluation results and psychoacoustic parameters calculated by correlation analysis and multiple linear regression analysis, established a quantitative model of loudness as noise annoyance index to describe the quality of the car.
Research on Offline Storage of Web Page
Authors: Liu Wen Tao
Published: February 2014

Offline storage technology has many uses in the Web application and it can store the user status, cache data, temporary data, and persistent data and so on. In this paper several typical web client storage technologies are discussed and it includes the IE browser's unique storage technology UserData, localStorage and sessionStorage of HTML5, Web SQL Databases, Indexed Database, as well as classic storage technology Cookie and so on. Their concrete using methods are explained and their individual strengths and differences are compared. Their respective applications occasions and some issues that need attention are discussed. The general cross-browser offline storage method is presented and it can use the same application programming interface to complete different browser offline storage technologies.
Multimedia Image Compression Algorithm Based on WBCT
Authors: Geng Kun
Published: February 2014

Gibbs effect appears inevitable in the decoded image can result in filter DFB. In this paper, through in-depth study of the nature of WBCT transform domain analysis of the causes of WBCT Gibbs effect, transformed itself in the parameter selection gives a solution, and in the transform domain creatively put forward the direction of the weighted model, in a WBCT The best way in JPEG2000 coding framework.
Sustainable and Inclusive Development Products Applied to Form Engineers in the Citizenship
Authors: Okumura Maria Lucia Miyake , Canciglieri Osiris
Published: February 2014

This paper presents a multiple case study concerning to the Integrated Product Development Process (IPDP) that involves the concepts of environmental sustainability and social inclusion to build solar water heating system made of discarded and recyclable materials in a way that People with Visual deficiency (PwVD) can participate in its manufacturing. This research proposes that Engineering courses in a near future adopt the aspect of Citizenship Education systematically, contextualizing environmental impact reduction and social inclusion of people with disabilities. The technical procedure of the study was delineated according to IPDP phases defined in two multidisciplinary strands leading to raw materials data collection through recycling and manufacturability with accessibility process to develop the product prototype. The analysis of the results presents the tooling developed for manufacturing with accessibility of people with visual impairments and the efficiency of the prototype installed. At the end, it is placed the relevant notes observed during the research and sustainable assignments in social and environmental dimensions for the education of engineering professionals.
Theoretical and Experimental Investigation on Modal Characteristics of Rotating Flexible Beam under Dynamic Boundary Conditions
Authors: Yin Hai Bin , Li Yu Feng , Zhao Yan , Cui Pei Juan
Published: February 2014

In order to exactly formulate the dynamics and solve the flexible vibration in the studies on the flexible structure, it is inevitable to study the modal characteristics of the flexible structure; while the accuracy of the modal characteristics relies on the choice of its boundary conditions. This paper investigates the modal characteristics of a flexible beam considering dynamic boundary conditions. Firstly, the first three mode shape functions and frequencies of a sliding-mass beam model are obtained through theoretical solutions. The concept of dynamic boundary conditions is brought forward by the study of special boundary conditions. Secondly, a rotating-free beam model is proposed to describe the dynamic boundary conditions of the rotating flexible beam. The first three frequencies and the mode shape functions of the rotating-free beam model are obtained. Finally, a series of samples and experiments proves the validity of the proposal on the rotating-free beam model.
Sustainable Product Design: The Development of a Conceptual Model
Authors: Fernandes Pâmela Teixeira , Canciglieri Osiris
Published: February 2014

This paper presents the development of a conceptual model for Method Integrated Product Development Oriented for Sustainability. The proposed method aims to assist designers in the development process, generating design alternatives directed at sustainable development and full life cycle of the product. This research was limited to application of the method to a product category through a case study. The research objective is to present the process of development and application of the method. The results indicate that the proposed method provides the development process to insert the rationale for the development of sustainability-oriented products as a complement to traditional design requirements in existing models of product development. It is believed that its application to other product designs is promising for the development of sustainable solutions.
New Application of Selection of Customized Lens Fitting in Optometry Services
Authors: Chang Lin Song , Wu Bo Wen
Published: February 2014

Judging from existing technologies, using human eye measurement devices to obtain individual relevant optical feature parameters is no longer difficult. These parameters allow us to construct an eye model for individual eyeballs. Such customized eye models are used to select appropriate glass material for each lens fitting to achieve a relatively minimal degree of spherical aberration. However, due to the variety of glass materials, the selection process is time consuming and not cost-effective. Therefore, it is necessary to design a set of feasible methods to select appropriate glass material quickly. In this study, then, we used the CODE V macro programming language to develop a new set of methods for glass selection. Glass with a smaller degree of spherical aberration and lower cost was selected via automatic algorithm to be applied in customized lens fitting. This method was validated as feasible and practical based on experimental results, and this method can greatly increase the degree of customization in lens fitting.
Design of the Electronic Waste Recycle Network System Based on GIS
Authors: Zhou Gui Liang , Zhu Yan Ru , Mao Li Na
Published: February 2014

The output of the electronic waste has increased greatly along with the economic development and improvement of peoples living standard. It has become a difficult research problem that how to recycle the electronic waste efficiently. The paper forecasts the total quantity of the electronic waste based on the status analysis on the electronic waste recycles. Then it gives the operation sites in the recycle system such as recycling site, disassembly/test center, disposal factory, etc. through forecast and GIS combining with the general process of the electronic waste recycle. Finally, it designs the integral electronic waste recycle system based on GIS, and applies the design to the electronic waste recycle system of Huaian. Furthermore, it carries out overall evaluation from three aspects: economy, environment protection and society according to the application result. The evaluation shows good result.
Numerical Simulations of the Perforation in Metal Plates with Different Conical-Nosed Projectiles
Authors: Sun Wei Hai , Ju Gui Ling , Yang Ban Quan
Published: February 2014

Numerical simulations with ABAQUS/Explicit into which Johnson-Cook constitutive relation is incorporated, are performed to study the perforation of Weldox 460E steel plates struck normally by conical-nosed projectiles with different cone angles. Different failure modes and perforation process are obtained. Numerical results are found to be in good agreement with available test data. It is revealed that with increasing cone angle, the failure modes of metal plates become to shear plugging from ductile hole enlargement, and the ballistic limits decrease with that. The conclusions are helpful for the design of protective structures.
Nonlinear Dynamic Response of a Thin Plate in a Fractional Viscoelastic Medium under Internal Resonance 1:1:2
Authors: Rossikhin Yury , Shitikova Marina
Published: February 2014

Dynamic behaviour of a nonlinear plate embedded in a fractional derivative viscoelastic medium and subjected to the conditions of the internal resonances two-to-one has been studied by Rossikhin and Shitikova in [1]. Nonlinear equations, the linear parts of which occur to be coupled, were solved by the method of multiple time scales. A new approach proposed in this paper allows one to uncouple the linear parts of equations of motion of the plate, while the same method, the method of multiple time scales, has been utilized for solving nonlinear equations. The new approach enables one to find a new type of the internal resonanse, i.e., one-to-one-to-two, as well as to solve the problems of vibrations of thin bodies more efficiently.
The Reduction of Fuel Consumption on the Example of Ecological Hybrid Buses
Authors: Bajerlein Maciej , Rymaniak Lukasz
Published: February 2014

For city buses, the costs of operation and maintenance are critical in the overall purchase and operation cost analysis. That is why the scientists from the Institute of Combustion Engines and Transport have taken up the subject of economic balance on the example of urban public transport operators. For an objective assessment of the fuel consumption it is necessary to determine all the variables. Hence, driving tests are developed that characterize the actual operating conditions and stringent procedures of their realization are set out. The paper presents the results of the fuel consumption tests carried out on public transport buses (SORT Standardized On-Road Tests Cycles).
Research on Network Security Issues and Security Model
Authors: Tang Jian Gang , Zhang Shi Jun , Jiang Ji
Published: February 2014

Network security issues came from traditional network, wireless network and cloud computing environment. Large-scale cloud computing, versatility and virtualization features of network security had become a hidden threat source. This paper analyzed the sources of network security threats, and established a network security model which encompasses all types of currently known network security factors; it could provide countermeasures to ensure network security. The security model had capabilities of real-time detection, rapid response, immediate recovery, and interaction between various independent modules. The security model used such security technologies as firewall, intrusion detection, intrusion deception, security scanning and PKI.
Construction of Data Warehouse Platform in Continual Quality Improvement
Authors: Tan Jun , Zhao Hai Ming
Published: February 2014

Aiming at improving product quality continually, we proposed an association rules mining system (ARMS) based on idea of PDCA cycling. Data warehouse is very useful for integrating heterogeneous database. Therefore, this paper designed a data warehouse platform as process data exchange module in ARMS. The role of data warehouse platform module is to integrate XML with enterprise process for realizing process data exchange among departments. In design of data warehosue, this paper chooses three-tier data warehouse structure and snowflake schema for indicating the complex relation between process data.
A Novel Mobility Management Scheme for Hierarchical MIPv6 Network
Authors: Sun Jin Shan , Wen Ying You , Liu Yu Hui , Zhao Hong
Published: February 2014

Delay and packet loss caused by the basic mobile IPv6 handover protocol can not guarantee the service quality of real-time communication. In order to improve the performance of fast handover of the mobile IPv6, we proposed a fast handover scheme based on hierarchical mobility which combines micro mobility and the link layer trigger. By shielding local mobility of the mobile node, the scheme can greatly reduce the signaling information traffic from mobile node to HA and CN. Through the link layer trigger mechanism, the scheme builds a tunnel in advance to avoid packet loss. In order to verify the performance of the proposed scheme, we did some simulation experiments in the NS-2 environment. The simulation results show that the scheme reduces handover delay and packet loss effectively.
A Secure Mobile Payments Protocol Based on ECC
Authors: Chen Xiao Mei , Zou Shi Hong
Published: February 2014

Owing to the limitations of mobile terminals and network bandwidth, the current Secure Electronic Transaction (SET) protocol can not be introduced into mobile payment directly. Present mobile payment system often uses symmetric encryption algorithm that may bring in some security risks. A new secure mobile payment protocol based on ECC was presented ,which ensures information flows from merchant to customer and enhances the security of customer’s information. Theoretical analysis shows that, ECC can not only meet the requirements of short key generation time, but also ensure that at the same time of cracking code the ratio of RSA and ECC key length is greater than 5:1. The number of signing the certificate verification, asymmetric and symmetric encryption of the new protocol is also lesser than SET protocol, so the current mobile terminal and network capabilities can support this protocol to ensure safe and effective mobile payment process.