bluuebunny/crossref_metadata_2025 huggingface dataset:
Applied Technology in Analysis of Status Quo of University Library Social Network Service and the Treatment Countermeasures
Authors: Zhu Kong Guo
Published: April 2014

More and more university students is getting used to get information through SNS (Social Network Service) as the development of network technology, this make university library SNS play a positive and significant role in university students. Because of the speed and advantages of popularity of SNS, using SNS to make the students establish virtual learning community become the study object of many university libraries. The paper established the evolutionary game model of knowledge management of university library SNS, and analysed its dynamic evolutionary process. Moreover, key factors such as the income, cost, the status of the knowledge management and knowledge absorption which affects the effectiveness of knowledge management were discussed. Finally, the measures on the improvement of domestic university library SNS were put forward.
Construction of Fo Zhao Gui Dan Intercity Bridge Project in Guang Zhou
Authors: Zhu Xiang Hong , Jiang Zeng Bin
Published: April 2014

Construction of Fozhao intercity bridge in Guangzhou was a three-span prestressed concrete continuous beam bridge. The bridge adopted triangle hanging basket cantilever pouring construction method. The bridge mixed cable-stayed spans, H form tower and typical highway bridge elements. It spaned across the exiting transport hubs center, with modern and ethereal shape, and became a new landmark of the city.
Boost Keywords Conversion of Search Engine
Authors: Zou Pin Jia , Cheng Yang , Xu Yan Yan , Fang Zheng
Published: April 2014

more and more people are used to purchase online. And companies also want to pay for the keyword on big search engine, such as Baidu, Google. So the strength of the competition plays a significant role in the efficiency of an online advertising campaign. Models for keyword auctions usually assume that, the value of a click is fixed and independent of the other sponsored ads in the auctions result, for the advertiser. In china, the big Online shopping mallTmall. Consumers can search products and service through Tmall Search Engine, a search engine allows consumers search in the Tmall. And we employ a zero-inflated Poisson regression to model the conversion of keywords.
Constructing Elliptic Curves over Ramanujan's Class Invariants
Authors: Hu Jian Jun
Published: April 2014

The Complex Multiplication (CM) method is a widely used technique for constructing elliptic curves over finite fields. The key point in this method is parameter generation of the elliptic curve and root compution of a special type of class polynomials. However, there are several class polynomials which can be used in the CM method, having much smaller coefficients, and fulfilling the prerequisite that their roots can be easily transformed to the roots of the corresponding Hilbert polynomials.In this paper, we provide a method which can construct elliptic curves by Ramanujan's class invariants. We described the algorithm for the construction of elliptic curves (ECs) over imaginary quadratic field and given the transformation from their roots to the roots of the corresponding Hilbert polynomials. We compared the efficiency in the use of this method and other methods.
Intelligent Path Analysis System about Based on the Sharing Information of Highway
Authors: Xu Shi Shi , Qin Yong , Liu Wei Hua
Published: April 2014

With the development of highway construction and technology, various highways could be integrated via the Internet. According to the relevant highway map, we could notice the serious loop network problem. To provide useful information for the highway companies, we need to identify the path of vehicles on the highway network by using the sharing information of highways. This research analyzes some polysomic identification of path about several main expressways; furthermore, it provides a new path-identification method that is the time scheduling match based on the dynamic weights. The new path-identification method includes the later polysomic analysis and statistical analysis on the flow of vehicles, which is able to offer the highway companies sound information. Moreover, the research also establish the smart analysis system about path based on the sharing information of highways, then using data to test the efficiency of the analysis system.
Method of Inserting Barcodes in DWG Files Based on ActiveX Automation Technology
Authors: Chen Xiao Bing , Wang Wen Hao
Published: April 2014

In order to implement information management precisely during the whole life cycle of drawings, a method of insertion barcodes in DWG files based on ActiveX Automation technology is proposed. The AcadDocument, AcadPolyline and AcadGroups objects of AutoCAD ActiveX Automation are used in the method to realize insertion of barcodes in DWG files interactively or automatically, and drawing versions are marked by the newest date of insertion of barcodes, then the DWG files are automatically converted to DWF files for browsing, checking and reviewing on Internet/Intranet. The proposed method has been applied to the developed document management system, operation results of the system show that the method is stable and effective.
Modeling and Reasoning about States in Late Launch Based on Horn Clauses
Authors: Xu Shi Wei , Zhang Huan Guo , Dai Zheng , Dai Xin Fa , Chen Jing Dong
Published: April 2014

Late Launch, which is a kind of dynamic measurement technology proposed by both Intel and AMD, offers isolated execution environment for codes needed to be protected. However, since the specifications and documents of Late Launch have hundreds of pages, they are too long and complicated to be fully covered and analyzed. A model based on Horn clauses is presented to solve the problem that there is a lack of realistic models and of automated tools for the verification of security protocols based on Late Launch. A running example is taken to show the execution details of Late Launch. Based on the example, secrecy properties of Late Launch are verified. Whats more, the automatic theorem proving tool ProVerif is used to make the verification more fast and accurate.
Quality Assessment of the Retrieval System Based on Web-Related Degree
Authors: Yang Xiao Bo
Published: April 2014

In order to further improve the quality and efficiency of Web search, the method of retrieval system quality assessment based on Web-related degree is proposed in this paper. The specific research process is as follows. Firstly, analyzing category for query and building a set of queries, then, studying the retrieval quality differences of different search engines through assessment experiment, finally, analyzing the factors which impact Web retrieval system quality assessment through four sides separately. The study result shows that using quality assessment method for retrieval system based on Web-related degree can better improve the accuracy of the corresponding assessment indicators and distinguish ability, accuracy ratio is over 90%, which can verify the validity of this method.
Regional Education Development Research Based on Robust Principal Component Analysis
Authors: Xie Xian Fen , Wang Bin Hui
Published: April 2014

Education development is the product of endogenous socio-economic; studying on regional differences of education level plays an important role in social and economic development. This paper constructs regional education development index system based on two aspects of basic educational facilities and educational scale, applies robust principal component analysis method to explore education development level differences of China's 31 provinces, and with the traditional principal component analysis for comparison. Research shows that, results obtained by robust principal component analysis is more in line with China's actual situation; the overall level of education is not high and the difference between regions is large; China's basic education is positively correlated with regional economy, while inversely correlated with regional population.
Research and Design of SaaS-Based Conference Service Platform
Authors: Liu Cong , Xiao Ping , Liu Yang , Wu Xin Gang
Published: April 2014

With the deficiencies of the traditional conference organization and management way in information collection, distribution, storage and sharing, we introduce the concept of software as a service (SaaS), analyze SaaS maturity model, propose a conference service platform based on the fourth maturity of SaaS, namely scalable multi-instance configurable level, research and design a multi-tenant, multi-service SaaS system architecture. Meanwhile, with the research and feasibility analysis of the conference service on the business affairs, processes and characteristics, we propose system design objective of quaternity and the general function mode, and discuss the system design, implementation and characteristics. The platform design can meet the general operation process of the conference to achieve one-stop service of conference organization management and to enhance the user experience. Application results demonstrate the effectiveness of the platform.
Crack Analysis of Bridge Piers of a Rail Transit Line in Guangzhou City
Authors: Chen Mu , Xue Jiang Hong
Published: April 2014

In order to study the bridge of a rail transit line in Guangzhou city, we use the finite element program Midas/FEA. Combining with the structure characteristics of the bridge, we establish space finite element model of piers. The linear and nonlinear analysis have been done respectively. In view of the nonlinear analysis, we analyze the left and right bearing under the most unfavorable load and dead load. The results show that as the ordinary reinforced concrete structure, bridge piers are bending crack under the design load. The width of crack controlled by force is less than the design value, so the bridge piers are in a safe state and it does not affect the normal operation. We noticed that the crack in piers appear a feature that width of crack become narrow in points under force controlling, but in other areas the crack in piers appear a feature that width of crack become wide. We have a preliminary judgment that the cause of this phenomenon may be the construction quality such as the actual reinforced protective layer are excessivecooling measures in the process of the construction of the pier head of mass concrete did not reach the designated positionmaintenance measures were in place and so on. The construction quality cause combined effects of mass concrete shrinkage crack and the structure of normal stress fracture.
Scenic Management System Based on Number of Visitors
Authors: Liu Yu Mei , Dong Yu Dan , Wu Jing
Published: April 2014

SOA-based travel management system combines Web Service can communicate and advantages of reusable code and data, such as through cross-platform and cross-network, allows users to easily view or query tourist information, hotel information line and through the system, as well as lines and hotel online booking, fully tease out the business needs of the tourism industry, and based on this technology was designed based on SOA architecture, information management system for a specific application of the foundation.
Special Database System Design Using Sector Organization and Server Clustering Techniques
Authors: Sun Qiu Dong , Zuo Jian Cun , Shao Yu Feng , Gui Lin
Published: April 2014

In order to reform the shortcomings of common database with a slower access speed and lower security level, this paper applied sector operating directly instead of general file access, and used the distributed computing and clustering techniques to form an information server cluster as the special database system. Firstly, the layout and sector segmentation methods were provided for data access in sector based database. And then some management methods were given to control information servers in the cluster. Finally, to more efficiently schedule the tasks for storing data and querying information, a dynamic and self-adaptive scheduling algorithm was introduced into the application server of cluster. The practice shows that the system developed by this design strategy has good efficiency and security, and the access speed of the special database system is almost 25 times than that of common database.
Task Scheduling and Resource Allocation of Cloud Computing Based on QoS
Authors: Pan Bai Lin , Wang Yan Ping , Li Han Xi , Qian Jie
Published: April 2014

With the enlargement of the scope of cloud computing application, the number of users and types also increases accordingly, the special demand for cloud computing resources has also improved. Cloud computing task scheduling and resource allocation are key technologies, mainly responsible for assigning user jobs to the appropriate resources to perform. But the existing scheduling algorithm is not fully consider the user demand for resources is different, and not well provided for different users to meet the requirements of its resources. As the demand for quality of service based on cloud computing and cloud computing original scheduling algorithm, the computing power scheduling algorithm is proposed based on the QoS constraints to research the cloud computing task scheduling and resource allocation problems, improving the overall efficiency of cloud computing system.
The Design and Implementation of Data Independence in the CSP Model of Security Protocol
Authors: An Jing , Zhang Lei , You Chun Lan
Published: April 2014

The CSP method has been extremely effective in checking for, and finding, attacks on security protocol. On the other hand, it has been limited to showing that a given small instance, usually restricted by the finiteness of some set of resources, is free of attacks. In order to resolve this problem, the data independence has been developed by Roscoe. This paper first introduce the new process to expand the CSP model on the base of data independence, and present the whole CSP model of Yahalom and its formalization description. At last, the checking is accomplished by writing in script language CSPM.
The Research of Energy Consumption Control of Tobacco Information Based on Cloud Computing
Authors: Jiang Xue Feng , Wang Zheng Min , Dong Hui Liang , Li Wei
Published: April 2014

With the development of technology and enterprise information resources utilization improving system reliability requirements, cloud computing is becoming more and more widely used. To improve the tobacco resource utilization of a lot of information and increase reliability of resource platform, this article is based on cloud computing technology, to research the use of virtualization technology on tobacco cloud computing platform architecture carried on the system design, and studies the tobacco cloud management platform, based on effective control of tobacco information resource utilization and energy consumption, to improve the reliability of the resource platform, having the vital significance to the development of the tobacco industry.
The Research of Oil Fields Heterogeneous Data Management Technology
Authors: Li Bing , Wang Yon Gan , Gao Ya Tian
Published: April 2014

With the continuous development of petroleum exploration technology and exploitation business, the data types involved in the petroleum field are getting more complicated and richer, so a lot of heterogeneous data types emerged, data interchange can not be achieved directly among them. In this paper, the integration middle framework of heterogeneous data types is built based on XML, to realize the transition and integration of relational data and XML data, and to provide support for the data sharing and application among data model. Foundation item .The project of youth fund of Northeast Petroleum University (The research of XML heterogeneous data management technology applied in oilfield management)
The User Interface Design of Lifting Equipment Based on MATLAB
Authors: Jia Xian Zhao , Li Hui Liang , Zhang Wei Wei
Published: April 2014

Deficiency of traditional lifting equipment selection among Multi-Rope mining friction hoist mainly displays in: the existence of larger theoretical and practical deviation of skip load. Key components do not match lifting machine. In consistency between design and actual situation, significantly affected the accuracy of the lifting equipment type selection.Therefore according to the working conditions, it has set up some different multiple mathematical models by the stepwise regression method, nonlinear regression modeling method, method of weighted coefficient and other different modeling methods. Design and select the optimal model for user interface screen by using Matlab GUI and access to calculation data and describe the graphic curve for various model result. Calculate the model results and the average error of the standard load and obtain the optimal model. Finally, design out the lifting equipment selection software of different situations such as economic speed, cycle time, single and double skip, which reduce the selection error, tedious calculation, low efficiency. At the same time, it is convenient for user to use and can constantly expand other functions.
Development of Computerize Value Stream System
Authors: Ahmad A.N.A. , Hasan Sulaiman Hj. , Norafifah H.
Published: April 2014

Value stream mapping (VSM) was initially developed to use of the suite of tools to help researcher or practitioner to identify waste in individual value streams and find an appropriate method to its removal. The process itself is simple and straightforward is used to identify waste using lean manufacturing technique, determined causes of the waste through the value stream mapping method and to propose solution to improve workplace environment. In this project is made an attempt to computerize the process though the application of VSM. Computerize value stream system is basically a method which is an internet networking system combining traditional concept of value stream mapping method to be used at manufacturing company to reduce wastes. This paper summarizes the way to develop an internet, online and network based of an efficient computerize value stream system to improve operation value of the manufacturing company. This paper reviews the design of package that will replace the manual method of doing VSM. This package will be applied in a real shop floor environment.
The Bivariate Minimum-Energy Tight Wavelet Frames and Applications in Economics and Management
Authors: Shen Jian Guo
Published: April 2014

Material science is an interdisciplinary field applying the properties of matter to various areas of science and engineering. Frames have become the focus of active research field, both in the-ory and in applications. In the article, the binary minimum-energy wavelet frames and frame multi-resolution resolution are introduced. A precise existence criterion for minimum-energy frames in terms of an ineqity condition on the Laurent poly-nomial symbols of the filter functions is provided. An explicit formula for designing minimum-energy frames is also established. The sufficient condi tion for the existence of tight wavelet frames is obtained by virtue of a generalized multiresolution analysis.
The Inter-Datacenter Connection in SDN and Traditional Hybrid Network
Authors: Hu Si Quan , Zhou Peng Yuan , Wang Jun Feng
Published: April 2014

With the extensive application and continuous growth of big data, new challenges are imposed into network design. Without enough consideration of big data in traditional design, bottleneck problems will occur frequently in such IT infrastructure. SDN (Software Defined Network) is one of the solutions to conquer such problems. However, most current SDN applications are limited to pure SDN structure or internal data centers. Differently, we focus on the traffic transmission between data centers in this paper. We construct the WAN links between data centers through VPN based on SDN architecture and traditional network. Both theoretical analysis and experiment results show that SDN had advantage over traditional network. Our work also suggested SDN architecture and traditional network could coexist in the real condition.
Finite Element Analysis and Research of Engine Connecting Rod
Authors: Zheng Qing Qian , Yang Bin , Yang Hui Min , Hu Min
Published: April 2014

The 3D Finite Element Method (FEM) model of engine connecting rod was established in this paper. And, nonlinear analysis of engine connecting rod was made, Stress distribution of the connecting rod under condition of maximum stretching and maximum compressing was simulated. The result shows that the results coincide with the actual results and connecting rod can satisfy the strength requirement, the method turns out to be very effective in practice.
Designed on Information Security Systems for Mobile Databases
Authors: Li Feng , Wang Hai Ying
Published: April 2014

In this paper, the existing transmission network message transfer protocol and conducted in-depth analysis to identify which existing security measures and the presence of hidden proposed secure data transmission scheme. The program takes into account the feasibility of the existing network to transmit messages that programs load capacity, on the other hand give full consideration to the needs of users, providing different levels of security services for different users.
Optimum Load Dispatching Model in Intelligent Distribution Network
Authors: Zhang Xiu Ge , Ren Ye , Huang Xun Cheng
Published: April 2014

The increase of the intensive power proportion in distribution network brings new challenges to load dispatch of power plant, and intelligent distribution would be a key issue in the future power integrated system. The paper combined the strength Pareto evolutionary algorithm with the parallel genetic algorithm (PGA) ,namely the Pseudo-parallel SPEA2 Algorithm for solving the dynamic economic load dispatch problem. This problem is formulated as a nonlinear constrained multi-objective optimization problem, meanwhile, synthetically considers dynamic constraints handling, the minimum of fuel cost and the pollution emission. Besides, the paper analyzed the feasibility and validity of this algorithm in the load dispatch of power system.
The Research of Production Split Using Well Logging and Well Testing Method
Authors: Wei Xi
Published: April 2014

The most popular method to split the production is mainly based on permeability and effective thickness of reservoir. In this general method, the permeability comes from the well logging interpretation. But this permeability can not reflect the flow characteristics of real fluid in the reservoir. In this paper, a new production split method is proposed considering the well logging method, the well test method and relative permeability curve. It is proved to be reliable and effective after cases study. It is worth to promote in oilfields.
Comparisons of Two Methods for Regional Dividing Technology of Liquefaction Based on ArcGIS
Authors: Li Cheng Cheng , Yuan Xiao Ming
Published: April 2014

Quantitative characterization of liquefaction degree in the south region of Tangshan city has been done by methods of code evaluation and multi-factor regression evaluation. By use of those criterition, liquefaction degree maps were prpared through collecting totally 65 boreholes, and compiling drilling graphics database and attribute database on ArcGIS. In this procedure, the potential of liquefaction values were given respectively. While the quality and quantity of geotechnical test data directly affact the statistical accuracy with which area can be characterized, different method affact it more considerable. According to these drilling data, liquefaction condition for each borehole was discriminated, and the liquefaction condition of the unknown area was speculated by Kriging interpolation method, then the liquefaction zoning map of south of Tangshan and its southern region is presented based on ArcGIS, and comparisons have been made for the two methods.
Research on Intelligent Collaborative System for Auto Parts Industry
Authors: Wu Peng Cheng , Zhang Wei , Zhang Yong , Zhou Dong Jun
Published: April 2014

Through the demand analysis of the business collaborative activities of auto parts enterprises, we establish the Intelligent Collaborative System. After the research on interaction process of collaborative quotation among auto parts enterprises, we build the product data model that supports multi enterprises’ collaborative response to customer requirements; according to the research of collaborative production planning principle, we propose the framework of auto parts enterprises’ building collaborative production planning; Based on the study of the hierarchical model of collaborative control of production process among multi enterprises, we discuss the framework of collaborative production process controlling among multi enterprises. The research indicates this system can meet the collaborative business demand of auto parts industry by using ASP mode and intelligent technology, also realize the intelligence.
Small Shifts Quality Control Schemes under MMSE Feedback Adjustment
Authors: Wang Hai Yu
Published: April 2014

This paper discusses small shifts process monitoring under MMSE adjustment. Based on the analysis of affect of feedback adjustment method to effective of control charts, small shifts process monitoring schemes of process output and control actions are proposed. An optimal strategy is provided by comparing monitoring performances of different control charts with different small abnormal shifts.
Study of Minimal Power Demand and Life Sustainable Time in the Residential Sector during Power Failure (in Korea)
Authors: Won An Na , Hong Won Hwa
Published: April 2014

A survey was carried out on 2,250 households around the nation for the purpose of understanding the awareness about minimal power demand and life sustainable time during power failure in the household sector. Implications of this study are as follows. When emergency power can be used during power failure, power required to maintain minimal livelihood was 20.3% of ordinary power use and power needed to maintain maximally abstained life was 27.3% of ordinary power use. 4% responded as We cannot sustain a moment, 13% as About 30 minutes, and 75% of cumulative households answered they can sustain for 12 hours. However, it must be noted that about 10% of households showed shortening of life sustainable time during power failure due to existence of infants / weak persons who rely upon medical devices.
Study on Development Model of Engineering Manufacturing
Authors: Li Xue Zhu
Published: April 2014

This paper theoretically studied the structure of manufacturing development; we conclude from the results that manufacturing and its decomposition index mainly due to increased levels of technological progress, offset by a decline in technical efficiency effect of technological progress, digestion and absorption capacity needs to be strengthened.
Supply Chain Risk Identification Based on State Space
Authors: Zhao Xiao Hui , Li Pei Pei , Duan Xuan , Li Xiao Yao
Published: April 2014

Supply chain risk produces and develops with the operation of supply chain. Its characteristics are dynamic and conductivity. In recent years, supply chain risk events occur frequently and cause serious consequences. It makes industry and academia pay much attention on conductive effect of supply chain risk. State space method is introduced in estimating of supply chain risk in this paper. The model of supply chain risk based on state space is given. Then we discuss the prediction error of the system.
The Applying of Grey Correlation Degree Theory on Quantitative Area Risk Assessment
Authors: Si Qing Min , Zhang Hao , Wu Jin Lin , Yu Jing Qi , Yi Jian Min
Published: April 2014

The quantitative area risk assessment (QARA) are definitted based on the characteristics of the area risk assessment, and the model of the QARA are proposesed. Based on the accident consequences analysis method and the theory of grey correlation, it presents the risk correlation analysis method which is used to analysis the risk correlation value between the projects, and discusses the grading method of the risk correlation according to the smooth handling idea. The practical applying results show that the theory of risk correlation has a good practical in QARA.
Research and Development of Project Management System for Mechanical Products
Authors: Wen Xiu Lan
Published: April 2014

Based on the informatization of mechanical manufacturing enterprise, the characteristics of mechanical manufacturing enterprise product development and research project have studied in this paper. Workflow technology was applied to the execution of project tasks . Through the adoption of user role - permission model, the system user access is controlled. In the end the method to develop the project management system is described.
Concurrent Decision-Making of Product Architecture and Supply Chain Configuration
Authors: Chen Jie , Huang Yue
Published: April 2014

The product architecture at early product design stagte has important effects on product design, and supply chain design decision. Considering the mutual effects between product architecture and supply chian design, this paper proposed an improved current decision-making method for product architecture and supply chain configuration. Taking use of an improved product architecture model expression GBOM, we establish mixed integer programming model to optimize the supply chain configuration, which can concurrently determine the product architecture and supply chain configuration, as well as get minimized the total supply chain cost. The numeric example shows that the proposed method is valid.
Study on Prediction Technology for Type Test Demand of Construction Machinery
Authors: Li Xiao Dong , Zhou Ke , Hao Xue Gui , Zhang Ying
Published: April 2014

In order to reduce the pressure of type test resource of construction machinery and make full use of type test organization, a type test prediction model was established on the basis of type tests analysis. The type test demand and test limit of old construction machinery was predicted according to test data history, the national standards and industry standards. Then the type test demand of new construction machinery was predicted according to development data history, and was corrected by the national policy factor, the national economic situation factor, the enterprise's current economic factor, the current economic factor of construction machinery and the market factor. After that, the type tests of construction machinery were prearranged according to all the type test demand and test limit. Finally practicability and effectiveness of the prediction technology were verified by enterprise application.
Numerical Research on Internal Flow Induced Noise of Rotor Oil Pump
Authors: Cai Hao , Li Jian , Yu Li Ping , Liu Ya Fei , Geng Yu He
Published: April 2014

The fluid noise of rotor oil pump is studied in this paper, and the turbulent and flow sound field model of rotor oil pump are built. Based on CFD software, three dimensional unsteady internal flow field numerical simulation of some type rotor oil pump is carried out. And, the velocity and pressure simulation results at different speeds are obtained. Based on acoustic finite element and infinite element method, CFD software and acoustic solver software are used to simulate the flow induced noise of rotor oil pump. And, the sound pressure level values of monitor points in the pump are obtained. This paper puts forward some methods to reduce noise which has been verified by the experiment result effectively.
Research on Micro-Pool Drill and its Drag Reduction Effect
Authors: Luo Peng , Yang Shuang
Published: April 2014

To the problem that drills are easy to break off during working, apply micro-pool lubrication technology in the field of drill cutting. Drill a micro hole with a diameter of 70μm, a depth of 30μm and a space of 100μm on the oblique plane of the front-end blade of a common drill with HDM-50 semiconductor side pump YAG laser to form a micro-pool drill which constitutes a contrast group with a common drill. Lubricate both of the two kinds of drills with 2# micro high pressure lithium grease and use them to drill holes on a 25mm A3 plate. The experiment indicates that: when the depth of the processed holes are 5mm, the average powers of the micro-pool drill at the speeds of 600R/min, 850R/min and 1100R/min are 3.243% higher than those of the common drill; and the average power of the micro-pool drill is 4.547% lower than that of the common drill when the depth is 12mm; and the average power of the micro-pool drill is 4.09% lower than that of the common drill when the depth is 22mm.
Analysis on the Bias of Seismic Ground Motion Prediction in a Shallow Stiff-Soil Site by LSSRL-1 Program
Authors: Chen Zhuo Shi , Yuan Xiao Ming , Meng Shang Jiu
Published: April 2014

The main causes of the ground motion blind prediction bias are the variability of the adopted program, the shear-wave velocity of the site, and the soil nonlinear dynamic parameters. By considering the variability of shear-wave velocity and the dynamic parameters, this essay used LSSRLI-1 Codes and Mw6.0 seismic record of Parkfield earthquake to calculate ground responses of 9 different conditions at Turkey Flat site. The authors believe that the variability of shear-wave velocity caused the dominant impact to the blind prediction of this shallow stiff-soil site. That impact is much greater than that of the dynamic parameters. LSSRLI-1 program may either underestimate the ground response of the shallow stiff-soil site or may overestimate it, so we should combine the specific site conditions and a large amounts of data to do the further analysis.
Study on the Effect upon Wear of Steel Ball from Injection Pressure in Reinforced Grinding Processing
Authors: Xiao Jin Rui , Liu Xiao Chu , Xie Bi Hong , Zhang Jian Wen , Huang Jun , Chen Zhi Bin
Published: April 2014

An experiment is used to research the influence of injection stress towards the wear of steel ball in reinforced grinding processing under the setting condition. The field-emission electron microscope is used to obverse the samples surface morphology and the phonology equipment of surface morphology is used to measure the surface morphology of samples. The surface of the steel ball wear degree is analyzed by the surface morphology indirectly. Experimental research shows that in the condition of setting experiment, the injection pressure of reinforced grinding should not lager than 0.6MPa. If not, the obvious wear will appear in the surface of steel ball and the disadvantageous influence will happen, such as scratching the surface of workpiece under processing.
The Analysis on the Tribological Properties of TPU/PVC Blends with Chrome-Plated Steel under Dry Sliding
Authors: Wang Cheng Long , Pan Dao Yuan , Wang Qi Bing , Zhao Rui Fang , Zhang Yu Zeng
Published: April 2014

It is based on actual working conditions and parameters of the hydraulic steering gear, to reach the purpose of the optimizing rubber by different rubbers mixing technology. Comparison the five kinds rubber and metal of the friction characteristics in dynamic fit, obtained a performance excellent rubber in the specific operating conditions. Then improve the overall service life of the transportation equipment. It is first prepared the same hardness TPU and PVC and blends that is ratio of 2:8, 5:5and8:2 in this article. The pros and cons of the five rubbers are analyzed by friction and wear properties of the above experimental. The test curve of coefficient friction and wear with time has been done under different load at constant low speed, friction and wear and wear mechanism of five rubbers with chrome-plated steel comparatively analyses to determine TPU/PVC = 8:2 blends has the heat resistance and wear resistance are better than TPU and PVC under dry sliding conditions.
The Fault Analysis and Research of Turbine Generator Sliding Bearing Oil Film Instability
Authors: Han Guo Dong , Wu Zhang Qin , Wan Shu Ting , Lv Zhan Jie , Liu Rong Hai , Wang Jin
Published: April 2014

This article are discussed Sliding Bearing for Turbine instability failure research status in detail; Gives the theoretical analysis On sliding bearing oil film instability failure mechanism, to further explore the oil whirl and oil whip manifestations and signal spectral characteristics. And analysis of the oil whirl speed changes the vibration characteristics of typical regions, given the time-domain waveform oil whirl and oil whip axis trajectory. Details of the turbine generator film and the main reason for the instability factors and made a film instability fault governance approach. It helped for Fault Diagnosis of Turbine film and achieving security and stability of Turbine provides technical reference.
A Study about Wind Stresses of 4-Dish Parabolic Solar Collector System by Using FEM and Response Surface Method
Authors: Song Byeong Uk , Seo Tae Il , Jeong Youn Seung
Published: April 2014

This paper presented a study about maximum stresses acting on the 4-dish solar collector system, which caused by excessive wind. For this, Central Composite Design and Response Surface Method were used on the basis of maximum stresses calculated by Finite Element Method. VisualDOC was used for CCD (Central Composite Design) and RSM (Response Surface Method), and Ansys was used for FEM (Finite Element Method) analysis. 9 cases of CCD points were selected and FEM analyses were conducted at these points. Based on these results, response surface function was constructed to model maximum stresses as function of wind velocity and thickness of dish support bar. In order to evaluate RSM model, arbitrary point were selected, and maximum stresses calculated by RSM were compared with those calculated by FEM.
Design and Optimization of the Flywheel Compressor Based on SolidWorks and Fluent
Authors: Li Ru Ju , Gao Qiang , Zhang Bao Cheng
Published: April 2014

To deal with the problem of energy waste in High-pressure gas relief of pulverized coal injection in the blast furnace, designed a flywheel compressor which consists of an energy storage mechanism and a power mechanism. It is used for recycling and reusing the energy released by the high-pressure nitrogen gas in pulverized coal mixing. It is a safe and an energy saving equipment without motor driving. In this paper, the model of the flywheel compressor was established in Solidworks and Fluent to simulate the flow field, then basic dimensions of the compressor was conducted, and structural design and optimization were completed at last.
Design of Electrically Controlled Movable Vane Regulation System of Axial Flow Fan
Authors: Zhu Ai Hua , Zhang Jin Kun , Chen Zhao Pu
Published: April 2014

This paper introduces the role of axial flow fan with adjustable movable vane, aiming at complicated structure, difficult regulation and hydraulic device leakage of hydraulic movable vane regulation device, designs a new kind of movable vane regulation system-electronically controlled movable vane regulation system, describes the composition and working principle of electronically controlled movable vane regulation system, and emphasizes on structure features of control system, reducing mechanism and impeller assembly.
Development of a 90°/180° Upender for Large and Heavy Workpiece by Using Airbags-Drived Flipping Worktable
Authors: Qiu Xue Song , Wang Liang , Wang Lei , Liu Jia Qi , Zhou Yu Lin
Published: April 2014

There is a serious security problem in the process of workpieces flipping, which restricts the increase of production capacity in manufacturing process of large workpieces applied in nuclear power equipment. The shapes and characteristics of flipping workpieces were analyzed; the general model of workpieces outer contour was established. The design goals of heavy castings and forgings cold-work turnover mechanism were formulated based on the requirements of turning process, then the basic constraint-face was build and the geometric constraint-model was uniformed. A novelty 3- DOF planar serial mechanism of heavy upender was proposed whose overall configuration consists of three movements, that is roll, mobile, folding turn, which can realize the double function of turning 90 ° and 180 ° of large workpiece as hollow cylindrical, conical and spherical crown three types. On this basis, the airbags-drived flipping worktable was designed; Topological optimization of flipping worktable was further conducted. Its key technology will provide useful ideas and references for the development of large heavy duty positioner and turnover machine with its other related equipment.
Hypoid Gear Three-Dimensional Modeling with Pro/E
Authors: Yang Man , Li Hui Bin , Xu Bao Yun
Published: April 2014

For hypoid gear which processed by HFT (hypoid gear formate tilt) method, geometry parameters and machining parameters of hypoid gear were calculated by using Gleason card. According to the actual machining process and meshing principle, tooth surface equation was derived by coordinate transformation. Then the discrete coordinates points of tooth surface were obtained by using MATLAB tools and projection transformation principle, and data were saved in ibl format. At last the 3-demensional model of hypoid gear were established by importing the ibl format data in Pro/e.
Optimal Design of Conductor Clamps Based on Abaqus
Authors: Liu Kai , Jiang Ming , Peng Fei
Published: April 2014

Three dimensional models and finite element models of conductor clamps are built in software Solidworks and Abaqus. Different forces are loaded on finite element model of conductor clamps to obtain distributions of stress and displacement. Optimal design of conductor clamps is performed with finite element analysis and field test data. The results show that optimal design scheme achieves optimal target.
Research on the Arc-Teeth Synchronous Belt's Tooth Load Distribution Caused by the Machining Error
Authors: Shi Yao Chen , Li Zhan Guo , Li Hao
Published: April 2014

This paper aimed at the machining error of the arc-teeth synchronous belts tooth ,the 3D model was established with CATIA ,the finite element model of belt was established by HYPERMESH ,and using the multibody dynamic software RECURDYN, the models with different machining errors were simulated by rigid-flexible coupling technology. Systematically studied the changing rule of the wedged stress and the contact stress under the influence of the machining error. So it has certain value to enhance the loading capacity, transmission performance and useful life.
Study of the Flexible Clamping Technology on the Detection Platform of Automobile Electric Glass Regulator
Authors: Li Qing Hua , Li Yue Guang , Yang Hua Peng
Published: April 2014

According to the comprehensive performance of electric glass regulator detection process, the installation screw hole of the glass regulator often was damaged when electric glass regulator was installed, so the flexible clamping mechanism of floating force was is designed, to fix and clamp the electric glass regulator, and all flexible clamping mechanism was emulated and analyzed, the results show that the flexible clamping mechanism is safe and reliable, so the theoretical basis was provided to optimize and design the online comprehensive performance equipment in the further.
The Design Method of Major Parameters for Built-Up Columns
Authors: Lin Gui Yu , Luo Yan Feng , Sun Ting Na , Li Kui Xian
Published: April 2014

Built-up columns are widely used in engineering structure, but it is confusing for designers how to determine the parameters of built-up columns. The paper based on the user's basic needs which are the minimum working radius and working load, would simplify working load, support force and hoisting force to the vertex of built-up columns. From the origin of design, and to analyze mechanic behavior of built-up columns, and have found the relationship between internal forces, that is, the axial force, the swing force, the support force, and the working load. In accordance with design experience, the relationship between axial internal stress and its total working stress, critical stress and limit of yielding, had been respectively determined. According to this knowledge to determine the mass and the geometrical parameters of major cross-sections and roots of built-up columns, and a comparison between the results and ones of examples calculations were made, and it was found that the results are reasonable. This will offer a design method of determining the major parameters of built-up columns at the phase of the preliminary design, and improve the independent design capability.
Flexible Manufacturing System CNC and the Integration of SmarTeam
Authors: Yuan Zhi Hua , Wang Ji Peng , Duan Mei
Published: April 2014

Adopt API provided bySmarteam realize CNC subsystem parameter of The ball arrow manufacture and SmarTeam integration base on Re-development of Pro/E，Realize the integrated function of PLM.，This technology scheme has been resolved the data share in the process of The ball arrow manufacture. Have improved the product mass，have shortened production cycle of the product.
Research on CISSCAx System of Suitable for Flexible Manufacturing Mechanical Products
Authors: Yuan Zhi Hua , Han Tie , Duan Mei
Published: April 2014

CAx system is the common application system of CIMS engineering, the data sharing between different systems is the basic problem of realizing data integration to solve. We analyze the implementation approach of CISSCAx system in this paper, adopting the extended commercial database is suitable for engineering application, building engineering database based on STEP standard, and solve the problem of information sharing in the design of automation.
Analysis and Experiment Study of Continuous Beam Arch Composite Bridge
Authors: Yang Jian Rong , Bai Yu , Yang Xiao Dong , Chen Yong Hong
Published: April 2014

Three dimension finite element analysis and full-scale testing are carried out on a newly-built continuous beam arch composite bridge. The 3D finite element model of the bridge is generated using a commercially available finite element package. The bridge is modeled under service loads, and the model results are compared to the results of field testing of the structure. Detailed experimental procedure is presented including the data acquisition system, testing truck, and the load distribution. Measured and calculated displacements are in reasonable concordance. And residual deformations meet the specification of the codes.
The Performance Calculation Method of Fouled Axial Flow Compressor Based on the Stage Stacking Method
Authors: Xu Hong , Yang Hua Dong , Hua Guang Ru
Published: April 2014

Fouling is the most important performance degradation factor, so it is necessary to accurately predict the effect of fouling on engine performance. This paper develops a performance calculation method of fouled multi-stage axial flow compressor based on experiment result and operating data. For multistage compressor, the whole compressor is decomposed into two sections. In this model, the performance of the first section is obtained by stage stacking method by combining scaling law method, linear progression model with traditional stage stacking method. On the other hand, the performance of the second section is calculated by averaged infinitesimal stage method. Finally, the model is successfully applied to predict the 8-stage axial flow compressor.
A Pulsed Diaphragm Piezoelectric Pump Using Centrifugal Force
Authors: Deng Zhi Sen , Ma Yu Ting
Published: April 2014

A pulsed diaphragm piezoelectric pump using centrifugal force is introduced in this paper. It utilizes centrifugal force in the swing motion of a vibrating tube as the driving force, and to input and output liquid continuously at first bending resonant frequency. The piezoelectric pump based on this principle is expected to effectively coordinate the high frequency characteristics of piezoelectric materials and low frequency characteristics of check valves. Resonant frequency of the pump is studied. A prototype pump was fabricated and tested. Experimental results show that the pump can hold and discharge very precise volume of liquid in every pulse, and can pump tap water at a flow rate of 6.12ml/min under a backpressure of 0.3kPa.