bluuebunny/crossref_metadata_2025 huggingface dataset:
Fault Diagnosis of some TV Seeker Based on General Grey Relation Analysis
Authors: Li Qing , Sun Da Lin , Gao Song
Published: May 2014

Grey system theory has obvious advantage on handling “poor information and small sample data” problems. Some TV seeker’s faults performance of such characteristics that the date is less and not integrity, and failure phenomenon is not explicit. So it comes to be difficult to diagnose the faults at the Basic level by a quick way. This paper means to build a model using the general gray relational analysis in order to establish contact between the fault parameter names and failure phenomenon. Then by using gray relational analysis on the fault records in the database and checking the model with another data. Calculation result shows that the method can judge fault position simply and quickly. The paper provides a kind of relatively reliable quantitative analysis basis for the fault diagnosis and locating faults.
Kinematic Transmission Analysis of a Novel Spherical 3-RRR Parallel Manipulator
Authors: Zhang Liang , Jin Zhen Lin
Published: May 2014

The kinematic transmission property and distributions in workspace of a novel spherical 3-RRR parallel mechanism are given. The orthogonal layout feature of the parallel mechanism is described. The equations for inverse displacement and kinematic transmission property are derived by the relation of geometry. The kinematic transmission evaluation index of a spherical 3-RRR parallel mechanism is defined. Finally, the distribution of the index in workspace was given, which can provide theoretical basis for the application of the spherical mechanism.
One Method of Design and Implementation of LAN Resources Search Platform
Authors: Kong Yi Quan , Jin Yi Fu , Zhao Fa Xin
Published: May 2014

The paper designed one LAN resources search platform, and established the search technology, including crawling documents from the web site, parsing, and then indexing, publishing search, building the user interface to the entire process. The LAN resources search platform provides users with network resources retrieval service well.
The Testing Filtering and Majorized Algorithm of a Kind of Nonstationary Stochastic Transmission System in Intelligence Control
Authors: Xiao Xiao Nan
Published: May 2014

In intelligence control, applying the method of optimal non-linear filtering and majorized algorithm, this paper discusses the optimal control of a kind of incomplete data and continuous nonstationary stochastic process; yields two optimal control mathematical models in these two situations; illustrates how to establish the optimal coding and decoding of the nonstationary stochastic process; and provides an effective and reliable approach for the optimal control of such a process.
FPGA Implementation of PDCCH Blind Detection Algorithm in TD-LTE
Authors: Chen Fa Tang , Zheng Wang Qiang , Lv Nan
Published: May 2014

As bearing of the DCI format information, PDCCH is the core of resource allocation and control information scheduling of TD-LTE system. The receiver PDCCH blind detection process has a crucial impact on the response time of the system. This article first introduced the blind detection process, then based on the research of the blind detection algorithm, FPGA implementation of the algorithm is presented and simulation, synthesis and board level validation is carried out on XINLINX Virtex-6 (XC6VSX475T) chip, finally the results of simulation and realization are analyzed. Results show that the proposed blind algorithm applied to the TD-LTE RF conformance test instrument has good efficiency and reliability.
Study on the Traffic Behavior of On-Ramp System Considering Driver Behavior
Authors: Liu Li Na , Wang Jie , Zhu Chang Sheng , Yang Qing
Published: May 2014

based on the main road into a two lane entrance ramp system the open boundary conditions, using the asymmetric lane changing rules, considering driver behavior characteristics, from standpoint of safety driving ,simulate the entrance ramp system. We get a basic road map different entrance probability of flow, velocity, and analyze the driving safety.compared with reference, and the reference results show that after considering driver behavior, in the ramp at the interface, reduce the interaction with the main ramp,not only the system traffic flow in each section is improved, and but also improve the driving safety.Considering the entrance ramp system driver behavior can be simulated more in line with the running state of the vehicle in real life.
Study on the Stability of Virtual Network Mapping Algorithm Based on the Improved Genetic Algorithm
Authors: Ge Jun Wei , Yu Yun , Fang Yi Qiu
Published: May 2014

A based on the improved genetic algorithm of the stability is presented, for the current virtual network mapping study based on the underlying resources load imbalance. The algorithm consider for the constraint of the underlying physical node, link resources and the parameters of virtual network requests. Join control threshold α to decide to accept the request. Use the improved genetic algorithm to automatically adapt to the current load overheating network node, choose the best physical link and line up a virtual mapping. As can be seen through the analysis of simulation results, the algorithm can process the request maps faster than others algorithm, improve the stability and the load balancing capability.
Evaluation of Emergency Plans of High-Speed Railway in Mountainous Area Based on Intuitionistic Fuzzy Sets
Authors: Yao Yun Hao , Li Yuan Fu
Published: May 2014

The emergency plan of high-speed railway plays an important role in guiding railway emergency management, the quality of which will directly affect the effectiveness and efficiency of emergency and rescue. Aiming at characteristics emergency plans of high-speed railway in mountainous areas, the evaluation index system of emergency plan of high-speed railway in mountainous areas is proposed. Based on the index system and intuitionistic fuzzy sets evaluation matrix, the scoring function value method is used to evaluate the index system. This paper uses the entropy method to assign weight to the index system, and finally take the emergency plan of high-speed railway from Guiyang to Guangzhou as an example to demonstrate the rationality.
Gibbs Sampling Method in the Multidimensional Logistic Response Model with Missing Responses
Authors: Fu Zhi Hui , Peng Cui Xin , Li Bin
Published: May 2014

Missing data are often a problem in statistical modeling. How to estimate item parameters with missing data in item response theory (IRT) is an interesting issue. The Bayesian paradigm offers a natural model-based solution for this problem by treating missing values as random variables and estimating their posterior distributions. In this article, based on a data augmentation scheme using the Gibbs sampler, we propose a Bayesian procedure to estimate the multidimensional two parameter Logistic model with missing responses.
Predicting Sales with Social Media Data
Authors: Zhang Wu Ke
Published: May 2014

With the development of social media in all over the world, some researchers have tried to predict indexes of economy and society with the social media data. And this method has been proved to be effective in the field of presidential election, stock market and macro economy. But there are no researches about the sales prediction with the data from social media. This paper selects variables from Sina MicroBlog (the biggest social media in China) and builds a predicting model with the sales data of Sony Camera. The model is tested to be significant and effective with an error rate about 13%. These results indicate that the social media data is valuable in sales forecasting.
Research on the Model of Reverse Logistics Networks Planning Based on Recycling Waste Household Appliances
Authors: Pan Xiao Yong , Liu Yong Liang , Wu Jiang , Zhang Quan Wei , Lai Dong
Published: May 2014

In the case of four kinds discarded appliances of TV set, refrigerators, air conditioners and washing machines, build a reverse logistics network model of waste household appliances recycling by planning to establish three nodes of collection points, recycling centers and dismantling treatment plants. The reverse model with the minimum total cost as the objective, including recycling costs, transportation costs, the node infrastructure investment costs, operating costs, government subsidies and renewable resource recycling revenue. Finally, the operation analysis of an example shows that the model is effective and reasonable. The model provides an important theoretical reference to solve the reverse logistics network planning, the optimal siting of new node and distribution optimization problem.
Risk Assessment of Chemical Plants Based on the Vulnerability
Authors: Zhao Dong Feng , Hu Su , Chen Shuang , An Cong
Published: May 2014

. The vulnerability of chemical plants’ disaster bodies was put forward through analyzing the four aspects of disaster bodies’ vulnerability. The impacted factors were analyzed and people, facilities, materials, environment and other targets’ exposure, sensibility, coping ability, resilience were also analyzed, so as to present the index system of chemical plants’ disaster bodies. Therefore, it can give a good idea and method to establish the chemical plants’ overall vulnerability.
The Research of NBA Sports Culture Communication Strategy in China
Authors: Zhou Yan Lin
Published: May 2014

As the world's highest level of professional basketball league, NBA has been successfully broke through the sports and business scope, it is not just a sports league and business groups, their cultural heritage make it a cultural transmission body. Using the power of media as a carrier, NBA basketball helm adopt various of means and strategies toconveysports culture and values to the Chinese. So what kind of qualities doseNBA sports culture have? What kind of cultural communication strategydoes NBA adopt? From the three aspects of communication strategies, NBA sports culture in China were discussed. Finally, we believe, NBA cultural communication strategy is an important reference significance for China's sports undertakings and cultural transmission.
Valuing Research Investment Projects Based on Discrete Time Model: A Real Options Approach
Authors: Xue Yong Gang , Zhang Ming Li
Published: May 2014

The methodology is proposed to value a project based on real options model firstly. Then the BOPM is used to value a project and the empirical results are compared with the results which are based on NPV approach. The results favor the application of the real option theory and show that the option value have important role on investment decision. The results show that the real option approach is more rational than the traditional NPV approach in valuing project because the uncertainty is considered in real option approach. The uncertainty with respect to project return has a substantial effect on investment decision, which is only explained by the option theory.
Research on the Network of China's Rural Market Information Service
Authors: Li Hong Xin
Published: May 2014

The information work in rural areas has important strategic significance in China's economic and social development. Rural information means is a process to realize the rural production and management, public services, government administration and living consumption by strengthening the rural network, and telecommunications networks and the Internet infrastructure, making full use of information resources and improving the information service system. Rural information service model is composed of organization model, five parts services, distribution channels, distribution mechanisms and support the interests of security system by certain organic unity of the inner workings of the relationship constituted. This paper analyzes the of China's rural current status of information service model, provides a useful thinking for rural information servicea and propose a new model of the trinity "diamond" services.
Analysis of Wellbore Integrity System
Authors: Zhao Xiao Feng , Wu Yan Xian
Published: May 2014

Wellbore system is the flow channel of the well fluid and the key link of pressure control. Along with more and more frequent accidents caused by the failure of well integrity in recent years, how to ensure well integrity in physics and function has become a research focus. Based on the analysis of the domestic and foreign papers about well integrity and well integrity management, this paper explained the concepts and histories related to well integrity, the dangerous consequences resulting from the failure of wellbore integrity and the reasons of the failure are analyzed selectively. Then, proposed the research direction of the wellbore integrity and the main problems that could be solved respectively.
Effect of Regulated Deficit Irrigation on Water Use and Economic Benefit of Processing Tomato (Solanum lycopersicum) in an Arid Environment
Authors: Zhang Heng Jia , Wen Ai Cun , Zhang Ji Dong
Published: May 2014

An experiment was conducted to determine the effect of regulated deficit irrigation (RDI) on water use and economic benefit of processing tomato in an arid environment. The results indicated that seasonal total irrigation water applied to processing tomato was significantly (p<0.05) saved by 14.3% to 42.9% under RDI compared to full irrigation. The irrigation water use efficiency (IWUE) of processing tomato was significantly improved with 32.4% and 57.2% in RDI plots respectively subjected to high and low water deficits at seedling as well as 26.1% in RDI plots subjected to low deficit at late fruiting compared with full irrigation, but no difference (p>0.05) occurred between fully irrigated crops and RDI plants subjected to water deficits at full fruiting as well as low deficit at late fruiting. However, in comparison with fully irrigated crops IWUE was significantly reduced with 20.5% and 22.2% in RDI plants both subjected to water deficits at flowering. Compared to full irrigation, the net income was significantly reduced with 11.3% to 45.3% in RDI plots except that subjected to low water deficit at seedling. Therefore, low water deficit RDI at seedling while full irrigation during flowering to late fruiting could be used to effectively reduce irrigation water application and improve IWUE of processing tomato without causing economic benefit reduction in arid areas.
Sequence Strata Division and Source Bed of Coal Bed Gas Accumulation Law of Early~Middle Jurassic at Xinjiang KuBai Coalfield
Authors: Wang Hao , Pang Ling Yun
Published: May 2014

The coal accumulation effect occurred at KuBai Coalfield in the early~middle Jurassic, including three major coal-bearing strata: Tarja Chick and Yangxia Group of Early Jurassic, and Kezilenuer group of Middle Jurassic. This article makes the contrast segment of 20 tie-well sequence strata by dividing the sequence strata and analyzing the depositional environment analysis of 85 drilling wells at Jurassic strata of KuBai Basin. By overall analyzing the materials of drilling, logging, outcropping, core and paleontology, it establishes the contrast framework of isochronal sequence strata with the unit of tertiary sequence at Jurassic strata of KuBai Basin. It also studies the sequence strata and Lithofacies of each sequence, and analyzes the coal accumulation law at Jurassic strata of KuBai Coalfield.
Study on Low-Carbonization of Commerce in Qinhuangdao City
Authors: Ta Li , Wang Lian Long , Gao Hui
Published: May 2014

Carbon emissions from energy consumption of commerce in Qinhuangdao are calculated from year 2001 to 2010, which show a growing tendency from total amounts and intensity. The limited factors of low-carbonization of commerce in Qinhuangdao are analyzed and the corresponding advices of low-carbonization of commerce are raised. Commercial enterprise enterprise should actively take internal governance, control the carbon emission of commercial buildings and properly select suppliers. The government should play a leading role and provide a good external environment for low carbon commercial development, which includes reasonably planning business industrial and commercial network layout, guide the use and development of the low-carbon techniques in commercial field, establishing special funds of low carbon business development to support the medium and small business enterprises, and strengthening the guide of low-carbon consumption.
The Research on Temporal and Spatial Econometric Analysis of Environmental Quality and Economic Growth
Authors: Xu Xian Hong
Published: May 2014

The traditional economic growth rapid growth of the gross national product, but also the natural resources are depleted, increasing environmental pollution, and the relationship between economic growth and environmental quality has caused a lot of controversy. Intuitive description of both the timing of changes in the law, in turn based on in-depth analysis of the dynamic pollution and income associated VAR model, found that there are long-run equilibrium and unilateral Granger causality, and then using the impulse response function analysis and analysis of variance, found that economic growth greater impact on the quality of the environment and the current quality of the environment is very small role in boosting economic growth, and this effect lag effect. Panel Data model to further explore the factors that affect the model, this paper found that the population density, the proportion of secondary industry and environmental governance investment on the quality of the environment has a significant impact, the majority of the pollution indicators are in line with the EKC inverted U-curve hypothesis, and a turning point in the inverted U-curve is also to make the calculation.
Evolution Mechanism Study of Sand and Gravel Braided River
Authors: Liu Lin Shuang , Li Ming , Zhang Ming , Zheng Li , Liu Lin
Published: May 2014

Sand and gravel braided riverbed evolution was controlled by hydrodynamic condition, boundary condition, coming water and sand conditions and diversion ratio. These conditions caused the river regime evolution tend to be complex. This paper analyzes the evolution mechanism of meander branch channels in a case study of Lujiahe reach. The evolution trend was studied through a comprehensive analysis of the runoff and sediment change, sediment diameter change,transverse overbank flow change and diversion ratio change. Lujiahe regime would remain stable, but there will still be a slight adjustment erosion and deposition.
Construction and Application Network to Economic Law Teaching
Authors: You Yu Qing
Published: May 2014

To solve the construction of the course that gives a lecture about economic law in the internet. The building of courses in the internet should be based on constructivist learning theory, so as to give full play to students' academic advantages, setting as its target the cultivation of talents with applied and compound capacities, observing the principle of systemizing and modularizing the content and taking knowledge learning as its means and method awareness as its objective. In practice, some measures should be taken, including publicizing hot cases for discussion, expounding on difficult and key points, providing helpful clues for the resolution of problems, creating learning situation and emphasizing practical skills. At the same time, tests of professional proficiency should also be introduced to facilitate the employment of students. So the applied talents master financial knowledge and master economy law knowledge can be developed. Only in this way can the applied effects of internet courses be guaranteed.
Design of Multimedia Teaching System Platform Based on Cloud Computing
Authors: Yue Li Na , Nie Huai Yong
Published: May 2014

In order to sovle the insufficiencies of multimedia teaching system in Chinese universities, the article analyzed the general problems of multimedia teaching System in Chinese universities and the advantages of Cloud computing by investigation and analysis, then suggested to design a multimedia teaching system Platform Based on Cloud Computing, and intruduced the system layers, whole structure of the Platform in detail.
Reformation and Practice of Integrated Teaching Mode on Professional Curriculum, Graduation Design and Employment for Environmental Engineering
Authors: Li Li Xin , Song Zhi Wei , Zhan You , Liu Yan
Published: May 2014

To resolve the problems of professional curriculum, graduation design and employment for environmental engineering specialty, new mode of "integration" was established by linking three aspects into a whole. It improved the teaching quality of professional curriculum and graduation design, created the conditions of employment for students.
Research on the Construction of Education Network Platform in Universities Based on the WEB Services
Authors: Tian Chun Yan , Guo Dong Mei
Published: May 2014

Research on the Construction of Education Network Platform in Universities Based on the Web Services Universal education and life-long learning has speed up the network development of education, and internet education to the tradition of the level of education has a more flexible and open has become the most rapidly developing education in a network of education. In order to improve information system in the development theory research institutions of higher education, and search for the distribution of resources "information", from the network systems modeling point of departure in institutions of higher education network platform features a full analysis, the use of language, UML modeling build a unified system model, with the web services technologies to find a solution to the institutions of higher education resources deployed problems, then based on the web service network platforms built higher education system integrated mode.
The Effect of Massive Open Online Course on the Universities in the Western Region
Authors: Guo Yu Xiang , Chen Xiao Bei , Li Ping Fen
Published: May 2014

This paper argues that MOOC is really a great opportunity to higher education in the west, but MOOC is not panacea, has its own limitations. Perhaps MOOC can help the Faculty to promote their theory and technology, change the students’ learning methods, and optimize the management processes. But not all learners entered MOOC will become active learners. Compared with the traditional network courses, MOOC has a free open mode, large-scale, community, self-organization and other characteristics, which will bring the huge innovations to universities in the western regions. With the development of western area, people eager for new knowledge, MOOC will have a huge impact on higher education in the west.
The Way to Reasonably Introduce Information Technology into PE Classes
Authors: Zhou Yue Jun
Published: May 2014

Along with the rapid development of society and technology, modern information technology has been applied to almost every aspect of social production and social life. Moreover, applying modern information technology to education and binding modern information technology to education sufficiently can be a very effective method to improve the current situation of education, to raise the educational quality and to strengthen the development of information technology. Introducing information technology into PE(physical education) classes is not only a significant presentation of the reform for teaching forms in PE but also the satisfaction for the demands the social development making on education. This paper gives a brief analysis of how to introduce reasonable information technology into PE classes.
Modern Information Technology Based Interactive Community Sport Education Research and Analysis
Authors: Mei Xu
Published: May 2014

As the development of the advanced information receiving and processing method, the modern technologies including the information and computer technologies are bring into the task of the physical education. The multimedia technology and the interactive technology are taken as the available tools to present vivid samples to the students, helping the students to clearly and deeply understand the information, knowledge as well as the movement of the context. Specialized to the community sport education task, this paper presented the way to introduce the modern information technology into the interactive community sport education and training. The benefit and weakness of the using of the modern information technology is analyzed by comparing to the traditional method. Moreover, we proposed a series of method for fusing the information technology and the community sport education, forming a novel interactive education pattern.
The Design of Indoor Monitoring System Based on Atmega128L
Authors: Zhang Ling , Tian Mu Qin
Published: May 2014

This paper describes an indoor monitoring system based on Atmega128L, which uses the temperature, smoke and carbon monoxide sensor to collect indoor danger signals, analyzes the field data collected wireless transceiver device and a central processing unit composed by Atmega128L and NRF24L01 single chip, and meanwhile transmits the information to a small control room, making abnormal indoor information processed timely.
Poetic Dwelling Art in Information Technology Age
Authors: Liao Hai Yan
Published: May 2014

Poetic dwelling comes from an article by Friedrich Holderlin, and it is well known by interpretation of Heidegger. It has been discussed from a variety of angles for a long time. It is an ideal state for human existence. This idea pursues purity and briefness, people’s harmony with nature. However, the development of information technology makes this ideal become distant to some extent. How to realize the poetic dwelling in information age is worth considering. In this paper, contradictions and reunifications between information technology and poetic dwelling have been discussed. After discussing the meaning of poetic dwelling, this paper analyzes the influence on poetic dwelling brought by information technology and puts forward views on how to realize poetic dwelling in the age of information technology.
The Integration and Innovation Design of Single Chip Computer and NC Machine Tool Control
Authors: Liu Jun Liang , Li Zi Lun , Li Luo Cheng , Song Zi Jie
Published: May 2014

Against to the problem of widely used of software error compensation, raises error compensation device to instead of PC to realize erro r compensation. And introduces multi-body system relating to error compensation, represents the feasibility and implementation techniques of software error compensation using SCM. This program will show great values in the field of CNC.
Analysis of the Stability and Treatment Method of K135+514~+678 Section Landslide of a Highway in Shaanxi Province
Authors: Zhang Zhi Pei , Zhao Guo Qing , Fei Li , Li Fei Long
Published: May 2014

Based on a typical loess landslide of K135+514 ~ +678 section of a Highway in Shaanxi Province, the formation mechanism and the possible failure mode of the loess landslide are analyzed, and the stability of the loess landslide is evaluated. The calculation results show that the landslide is in a stable ~ basically stable state during natural condition and in unstable state after working condition. According to the basis of those analyses, the treating measures of the landslide are put forward. At last after the schemes’ comparison the "anti-slide pile + unloading + slope drainage+ plant greening" comprehensive control scheme is determined, this has certain reference significance for the similar engineering in the future.
Application of Electrical Energy Saving Technology in Architectural Engineering
Authors: Liu Wan Tao
Published: May 2014

With the development of society and science,Our country began to advocate "green environmental protection, energy conservation and emissions reduction". Construction as an important component of the national economy, have begun to attach importance to the development of electrical energy-saving technologies. Energy-saving technology can save resources, ease the energy crisis and to improve the quality of people's lives and the environment. In construction, the use of electrical energy-saving technology, can effectively improve the quality of construction, architectural resources, reduce waste, improve resource utilization. This paper briefly describes the electrical energy-saving technologies, analyzing the status of construction, energy-saving technology in the construction of electrical engineering.
Mechanics Characteristic Analysis of Support Structure of Shallow-Buried Large-Section Loess Tunnel
Authors: Sun Zhi Jie
Published: May 2014

To research the mechanics characteristic of support structure of shallow-buried large section loess tunnel with different construction methods, 3D Numerical Simulation is applied and the large-section loess tunnel of highway is taken as an example. Comparing mechanics characteristic of support structure in three types of construction method conditions, the research results show that:The Benching stepping method which caused large surrounding rock deformation can reduce the value of structural performance. While the Both side heading is just opposite.
Catalytic Conversion of Octanoic Acid over HZSM-5 Catalyst
Authors: Liu Yi Bin , Li Yu Zhen , Ding Xue , Chen Zhao Jun
Published: May 2014

Catalytic conversion experiment of octanoic acid over HZSM-5 catalyst was carried out in a fixed fluidized bed reactor system. The effects of reaction temperature and catalyst to oil ratio on product distribution were investigated. The results showed that temperature influenced the LCO, gasoline and CO yields obviously. LCO yield decreased while CO yield increased with increasing reaction temperature. Gasoline yield reached maximum at 450 oC. CO is the major oxygenated product, and the yield increased linearly with increasing catalyst to oil ratio..
The Research of Ground Deformation Prediction Neural Network Model on City Underground Construction
Authors: Zhu Wen Xin
Published: May 2014

This paper sees the underground construction shield tunnel and foundation trench as study object. It has analyzed disturbance mechanism and ground deformation mechanism, which were caused by shield tunnel and building pit construction. Through the system analysis of ground deformation influence factor, it has confirmed main influence factors, like geological environment condition of overall consideration, physical parameter and construction technology. And it has established ground deformation prediction model based on neural network. Then it has made sensitivity analysis of affecting ground deformation factor by neural network hierarchical analytical approach.
Analysis of Cracking of Automotive Stamping Parts and Improvement Measure
Authors: Zhang Jian Yang , Chen Lian Sheng , Tian Ya Qiang , Song Jin Ying , Qi Xiang Yu
Published: May 2014

By using the optical microscopy, scanning electron microscopy, X-ray fluorescence spectrum analyzers and spectrum analyzers, cracking of automotive stamping parts were researched and analyzed. The results showed that the fracture morphology of grainy layered fracture was caused by a long strip of sulfide inclusions.
Improvement of Process Capability in a Multistep Machining Process
Authors: Zhu Fang , Huang Xiong Fei , Ye Bao Yu
Published: May 2014

The work in this paper will present a developed methodology for process capability evaluation and improvement in a multistep machining process. In this methodology, a physical model is developed to describe the complex variation propagation process throughout all steps in a multistep machining process. Then building on this physical model, a process capability index evaluation method is derived. A capability improvement procedure is developed to prioritize process improvement efforts based on the sensitivity analysis of process parameters. Finally, the effectiveness of the proposed methodology is demonstrated in a case study.
Mechanical Analysis of Cycloid Gear Rod
Authors: Liu Yan Qiu , Peng Yan Ping , Chen Tao
Published: May 2014

This article aims at the fracture problem of the transmission linkage of swaying yarn machine, based on the improved transmission mechanism, used the theory of Kinematics and Mechanics, the paper analyzed and calculated the transverse force and the longitudinal force on the transmission linkage of the swaying yarn machine, and got the force direction and size, and the maximal position and value of bending moment in the one rotary process of the driving crank of transmission linkage, to supply the theory basis of solving the problem of transmission fracture of swaying yarn machine.
Outer Characteristics Simulation and Performance Analysis of Motorcycle’s Rear Shock Absorber
Authors: Shan Chun Xian , Sun Lu Cheng , Sui Mao Hong
Published: May 2014

Motorcycle’s rear shock absorber has been built as a nonlinear mathematical model to analyze the shock absorber damping force characteristic. The model has been divided into various subsystems that including hydrodynamics flow model, friction model, elastic deformation model, and gas pressure model. It has been implemented in MATLAB/Simulink environment, and validated against experimental test data. The results show that the model is sufficiently accurate, the practical behavior of the shock absorber can be reproduced. The relationship between the valve system parameters and shock absorber outer characteristics has also been analyzed. Furthermore, the influence of valve system parameters is analyzed to provide some theoretical basis for the motorcycle shock absorber performance optimization and structure improvement.
Simplified Calculation of the Maximum Thrusting Force of Hydraulic Shear-Fork Type Lifting Platform
Authors: Zheng Hong
Published: May 2014

According to the structure of hydraulic shear-fork type lifting platform, it is divided into different component modules, and each module is deduced to solve the calculation of the primary theoretical expression to simplify the calculation of the thrust, and the corresponding formula is deduced.
Effects of Mixed Template on Pore Structure of Order of Crack-Free Monolithic Mesoporous Carbon
Authors: Jiao Jian , Cui Yong Hong , Cai Yu , Lv Pan Pan
Published: May 2014

Crack-free monolithic mesoporous carbon with worm-like structure has been synthesized by low-temperature autoclaving that use triblock copolymer F127 or P123 as composite template, and resorcinol-formaldehyde resol as carbon precursor. The effects of the composite template ratio on the structure of mesoporous carbon were studied by transmission electron microscopy, nitrogen adsorption measurements and element analysis. The results indicated that mesoporous carbon are worm-like structure when use F127/P123 as composite template. Compared mesoporous carbon synthesized by a single template, the pore size distribution of the mesoporous carbon synthesized by the composite template are directly affected by the molar ratio of P123 in the composite templates, however, the pore size is significantly enlarged when using F127/P123 as template. The pore size of mesoporous carbon increased to 12.0nm when the molar ratio of P123 in the composite templates is 67%. We achieved adjustable pore diameter by use F127/P123 changing the molar ratio of P123 in the composite templates.
Stress Analysis of Interference Fit in Wheelset
Authors: Zhang Min , Hu Guang Zhong , Xiao Shou Ne , Tang Yong Ming
Published: May 2014

The locomotive wheelset running with a high-speed, the wheels and axles of wheelset usually assembled by interference fit, the radial contact stress produced by interference cause the friction on the contact area, the axial force and torque of the wheelset transmitted by the friction. The value of prestress produced by the magnitude of interference change small in each load case, and it plays the main role in total stress of wheelset. So it’s very important that choosing a appropriate interference for the wheelset assembly base on the results solved by the finite element contact analysis.
Effects of Exhaust Gas Recirculation on Combustion and Emission of a Marine Diesel Engine
Authors: Yu Hong Liang , Yu Gong Zhi , Duan Shu Lin
Published: May 2014

Taking into account the formation of thermal NO, the local balance method and Extended Zeldovich model were used in the paper to simulate the combustion and emission of a marine diesel engine with the AVL FIRE software and to verify the model. The effects of exhaust gas recirculation(EGR) ratios of 0%, 10%and 20% on combustion and emission of a diesel engine were discussed. The purpose of the paper provided a theoretical basis for the marine diesel engine upgrade of Chinese small and medium sized vessels, especially fishing vessel engine. The results show that with the increasing of EGR ratio,the cylinder pressure and combustion temperatures decreases and the peak of soot also shown a downward trend and more gentle, under the same load conditions.
Leak-Off Coefficient Analysis in Stimulation Treatment Design
Authors: Cai Bo , Ding Yun Hong , Lu Yong Jun , He Chun Ming , Duan Gui Fu
Published: May 2014

Hydraulic fracturing was first used in the late 1940s and has become a common technique to enhance the production of low-permeability formations.Hydraulic fracturing treatments were pumped into permeable formations with permeable fluids. This means that as the fracturing fluid was being pumped into the formation, a certain proportion of this fluid will being lost into formation as fluid leak-off. Therefore, leak-off coefficient is the most leading parameters of fracturing fluids. The accurate understanding of leak-off coefficient of fracturing fluid is an important guidance to hydraulic fracturing industry design. In this paper, a new field method of leak-off coefficient real time analysis model was presented based on instantaneous shut-in pressure (ISIP). More than 100 wells were fractured using this method in oil field. The results show that average liquid rates of post-fracturing was 22m3/d which double improvement compared with the past treatment wells. It had an important role for hydraulic fracturing stimulation treatment design in low permeability reservoirs and was proven that the new model for hydraulic fracturing treatment is greatly improved.
Facile Systhesis La-Doped Nanoceria and Loaded Silver Nanoparticles Scavenging Hydroxyl Radicals
Authors: Wang Kun Jie , Li Ming Liang , Guan Feng , Li Hong Xia , Wu Yan Ping
Published: May 2014

In this work, we well performed the silver nanoparticles (AgNPs) supported on rare earth oxides ,which La-doped nanoceria nanocomposites for the scavenging Hydroxyl radicals that used facile and readily synthesized strategy .The complex microstructure nanoparticles were characterized by High resolution transmission electron microsopy (HRTEM), Energy dispersive spectrometer (EDS), X-ray diffraction (XRD). This paper showed AgNPs were immobilized on an functionalized dual-rare earth oxides surface that have a potential in biomedicine like antioxidant, anti-inflammatory, antibacterial and anticancer on perspectives future.
A New Cut-Set Distribution in Fuzzy Reliability Models of Mechanical Structures
Authors: Zhang Meng , Lu Shan
Published: May 2014

The mechanical fuzzy reliability models based on cut-set method have been applied to many fields in engineering. The reliability analysis results are affected by the cut-set distribution. In this paper, a basic mechanical fuzzy reliability model using cut-set method was established. Based on this model, the deficiency of the three previous cut-set distributions, i.e. uniform distribution, linear distribution and truncated normal distribution, was analyzed, and a new cut-set distribution named modified truncated normal distribution was proposed. The analysis results showed that when the cut-set is long enough, the reliabilities of the fuzzy models with the three previous cut-set distributions tend to a fixed value which has nothing to do with the specific mechanical structures, which makes the models have no good convergence and unreasonable. While, the fuzzy reliability model with the new cut-set distribution proposed in this paper can converge well to the classical random reliability model. Moreover, the reliabilities of a stress-strength interference problem and a resonance problem were assessed as two examples to verify the theoretical analysis results, which indicate that with this new cut-set distribution, the fuzzy reliability models have better convergence and wider applications.
Literature Review of Studies on Self-Centering Bridge Pier Joint
Authors: Wen Juan Juan , Yi Li Yun
Published: May 2014

A self-centering bridge pier joint consists of energy dissipaters and elastic recovery devices. Energy dissipaters such as energy dissipating bars and dampers can dissipate enough energy; and elastic recovery devices like unbounded prestressed tendons can reduce the post earthquake residual deformation. Combined with relevant literature in this field, this paper analyzes the research status in terms of experimental research, numerical simulation and engineering application of self-centering bridge pier joints and proposes a direction for future research.
Equilibrium State of Football Players Affected by Disturbance
Authors: Dong Chun Ping
Published: May 2014

Strategies of human balance when standing up from static equilibrium strategy began. The paper use bio-mechanical principles study human balance strategies, we will first discuss the stability of the human body measurement problems, and then discuss the footballer walking process disturbed the balance of input recovery strategy, and the results of this study provide enhancements for the body to balance the theoretical support.
The Flexible Control System Development of the Sawing and Milling Machining Center for PVC Door and Window Profile
Authors: Wang Na , Zhang Jun Ming , Zhang Hui , Ze Xiang Bo
Published: May 2014

In the paper, with the secondary development of FANUC-0MD system, the flexible control system which meets the requirements of the sawing and milling machining center for PVC door and window profile is realized. Based on researching the structure, the function, the process of the technologies and the control requirements of the machining center, the CNC system has implemented, including the machine tool origin and work piece coordinate origin establishment and auxiliary control system M code development. In this flexible control system, through studying the geometric character, the technical character and the mutual relation between them, various windows shape on the structure and the machining figuration is possessed of. We gain the feature subclasses aggregate of the machining technology of windows shape. Consequently, CAM system is achieved.
Optimization of Aircraft Mid-Fuselage Structure Design Based on Parametric Modeling
Authors: Zhang Chao Ying , Liu Hu , Ma Yun Peng
Published: May 2014

In aircraft preliminary design, fuselage structure design is important, and to reach the lightest weight is the main target for aircraft design, especially for civil aircraft. Based on CAD/CAE technology, the paper selects a typical structure layout form of aircraft mid-fuselage to study the method of structure model quickly creation and optimization. First, it focuses on fuselage parameterized modeling method, based on CATIA secondary development technology, to create the mid-fuselage parametric model. Then, based on Patran command language, the CAD model achieves automatic meshing. Finally, selecting an appropriate strategy and using iSIGHT integrated with fuselage parametric model and finite element model, and referring to the calculated the structural response by Nastran to realize mid-fuselage structure optimization.
Research on Repetitive Control Strategy of Photovoltaic Grid-Connected Inverter
Authors: Hao Cheng Long , Xie Li Li , Li Xu , Wang Tan , Zhang Jing
Published: May 2014

The photovoltaic grid-connected inverter is the most important device of photovoltaic generation which is a widely adopted application of solar energy. Its control strategy determines the working status and performance of the photovoltaic generation system. Repetitive control strategy of the photovoltaic grid-connected inverter is analyzed in this paper. The method based on repetitive control and pole assignment is also presented to solve the one-cycle-lag disadvantage of repetitive control, and the simulation model in Matlab/Simulink is established. The simulation results show that the dynamic performance of grid-connected inverter is improved and the waveform deviation rate is reduced effectively with the help of pole assignment.
Application and Development of Resin Capsules in Chinese Coal Mines
Authors: Hu Bin
Published: May 2014

Development and application of resin capsules in Chinese coal mines were introduced in this paper, including the category, feature, applicability and basic parameters. The paper pointed out that unsaturated polyester resin capsules were the most widely used in Chinese coal mines. A kind of newly-developed low-viscosity resin capsule was applied to industrial test in Fengshuigou Colliery, and the results showed that the high pre-stress and intensive bolting system could effectively control the violent displacements of the surrounding rock, and it provided an effective approach for the support of soft rock roadway. Finally the future developments of resin capsules were prospected.
High Precision Synchronous Trigger be Researched Based on WSN
Authors: Zhang Dong Hong , Wu De Qiong , Sun Shan Shan , Fang Zhi Fu
Published: May 2014

The traditional synchronous trigger of blasting shock wave field is lineate. Because distributed range of testing field is very wide, the cost is high, disposing line is very inconvenient, reliability of testing system is at a discount. Now a more power node acts as synchronization trigger which starts up all sensor nodes isochronously by broadcast. The author named a synchronization technology as priority sequence. Single broadcast synchronization precision measuring experiment is made by the same testing method as Elson. The new experiment result is the error accord expectation , standard deviation normal school. The standard deviation is 6.8 of Elsons. The precision is exceed demand of shock wave field testing.
A Novel D-STATCOM Synthetical Optimization Configuration Method for Stability Control
Authors: Li Jian Hui , Li Shuai Hu
Published: May 2014

Basic on dynamic analytic method and the trajectory sensitivity index to determine the optimal installation location , this paper propose a new D-STATCOM configuration method to synthesize the index of nodes voltage stability. The trajectory sensitivity index can reflect the general dynamic support effect under various faults, the best configuration scheme can be determined. The result reflect the new method have better play the role of dynamic reactive power compensation device. IEEE39 node system take as the example, the results show the effectiveness of the new method.
Modular Design of Combined Comfort Furniture and Iranian Dining Table
Authors: Faraji Ali , Daeechian Yosra
Published: May 2014

Archaeological remains of the Iranian culture show the rich culture and traditional arts in this country, which is derived from the ancient Persian traditions and commandments of Islam and attends to all of aspect of human life. Dining table is one of the home key products that gathers family members up, in order to keep intimacy among them, whether there is any sign of tradition and culture of the Iranian-Islamic, and it has setting ergonomic problems. This paper has came out of the practical studying in the furniture designing domain and is trying to cover the gap of presenting of Iranian art and culture in current designing of furniture market. By making use of library as well as field research, by employing interaction design principles using questionnaire, personal interview and observation manners, design criteria are obtained and finally, the premier design with details is presented.
Study on Application of Internet of Things in Express Delivery Services Industry
Authors: Han Yang
Published: May 2014

The express delivery services (EDS) industry is an important field for Internet of Things (IOT) application. Based on reviews of current research on IOT and current application of IOT, this paper addresses major issues in the application of IOT in EDS industry, analyzes opportunities and threats in the application of IOT in EDS industry, and gives suggestions on how to apply IOT technology in EDS industry.