bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Implementation of the Intelligent Mobile Phone Platform for English Learning
Authors: Chen Hong Te , Wu Chang Cheng
Published: May 2014

With the rapid development of computer and the mobile communication technology, mobile learning arises at the historic moment, which makes people gain learning environment and resources anytime and anywhere. As English has the characters of weak systematic and trivial knowledge, the paper makes a research of the development of resources to provide learners Flake Learning. Firstly, people make a research of Informal Learning Theory, Situated Cognition and Learning Theory and then discusses their guidance for mobile learning; Secondly, in order to realize Situated Learning, the platform designs modularly learning resources and combine subject type with media formats, based on the characteristics of M-learning; Thirdly, this paper discusses the problem about interaction and question-answering and import the intelligent Q&A system to our design. Fourthly, under the guidance of above theories, the mobile English learning platform is implemented.
Development of Flash Network Courseware
Authors: Liang Wei Yan
Published: May 2014

Flash is one of multimedia invent software featured with small volume, strong interaction and easy network operation. This paper discusses the techniques frequently used for flash courseware: button making, implementation technology for interactive action, voice application, work release, etc. In order to provide certain reference for readers interested in the development of flash courseware.
Research on Social Evaluation System Building for Higher Vocational Education Based on AHP
Authors: Jiao Ya Bing
Published: May 2014

With the popularization of higher education in China, the implementation of the higher vocational education should be to determine the new evaluation standard and value orientation, building a scientific evaluation system, to guide and promote the development of higher vocational education. This article from the characteristics of social assessment in higher vocational colleges, analyzes the influencing factors of higher vocational colleges, determine the corresponding evaluation index system, using the AHP to establish the corresponding vocational education evaluation model, for the relevant departments to provide a quantitative evaluation of the level of higher vocational education reference method.
Research on Teaching Quality Evaluation Using Data Mining Technique
Authors: Li Ai Feng , Hu Ying , Zhao Wen Jing
Published: May 2014

—In this paper, we employ data mining (DM) technique to analyze various potential factors which impact the in-class teaching quality evaluation. Based on an effective dataset, we first exploit association rule method to mine the relationship between the teacher’s attributions, such as title, degree, age, seniority, and load, and the in-class teaching quality evaluation results. Then, we construct the decision tree of course’s attributions to reveal how the course’s attributions, such as property, credit, week hour, and number of students, impact the in-class teaching quality evaluation results. Our mined rules can provide effective guidance to talent development, teaching management, and input of talent in higher education system. Index Terms—data mining, decision tree, association rule, teaching quality evaluation
The Apply of DirectShow in Scenario Interactive Teaching System
Authors: Xiahou Jian Bing , Wang Zhen Xiong
Published: May 2014

This article describes the basic knowledge and principles of the DirectShow technology, including the DirectShow system architecture and COM technologies. And how to use DirectShow to do video real-time acquisition and storage, audio and video synchronization in the scene interactive teaching system.
The Research of Mobile Learning
Authors: Li Lin Tao , Zhu Shan Hong
Published: May 2014

Augmented reality can create a learning environment to learners, combining the actual condition of let them around to see the real environment at the same time, also can see a computer, virtual information generated by mobile phones as the implementation of the augmented reality application platform, due to the mobility, portability, and human-computer interaction, etc, has strong advantage, and therefore more mobile learning application prospect, this paper discusses the structure of augmented reality based on mobile phone key technology and main function features, on the basis of to augmented reality based on mobile phone and its application in mobile learning has a deeper understanding.
Modeling for Talents Development of Colleges and Universities in Jiangxi Province Based on Knowledge Base
Authors: Li Zhi Gang
Published: May 2014

The current education of colleges and universities in Jiangxi province is in a critical period of development. The scale of students taking higher education has increased nearly 10 times from the late 1990s to 2013 in Jiangxi province. According to the international standards, Jiangxi has been in a stage of higher education popularization. Although the overall situation is optimistic, we should realize that the start of education in Jiangxi province is much lower. While teaching scale and quality having a substantial increase, there is still a certain gap in teaching level between Jiangxi and the developed countries. Recently, society has been shifting to the knowledge economy society gradually. Colleges and universities have to reform the situation of education under the guide of information technology. This paper analyzed the connotation of the knowledge-innovative talents. Through the AHP analysis method, the analysis model of knowledge-innovative talents was established to offer new ideas to the innovation of the teaching and improvement of management. for the higher education in Jiangxi province.
Design and Implementation of the English Curriculum Evaluation System
Authors: Zhang Xiao Yan
Published: May 2014

The paper Based on the English test system design and implementation of the background of the system in order to realize the system of thought, framework, methods and the key technology points. This dissertation focuses on the reach new examination mode innovation ability through the online examination, and gives the realization process of online automatic test paper, automatic identification, automatic recovery scores and answers. The system provides anew assessment model to improve the quality of education.
Optical Switches Based on Photoinduced Electron Transfer (PET) Process
Authors: Li Xiao Hui , Yu Zhen Ning , Liu Zhi Lian
Published: May 2014

The fluorescence of N-methyl-1-naphthymethylamine (NA) was reversible modulated by acid and base based on switching photoinduced electron transfer (PET) process, which constituted a reversible on –off switch. However, addition of a calix [4] arene-spiropyran (Calix-2sp) derivative, which has absorption from 200 nm to 400 nm, caused that the fluorescence of protonated NA (NAH) was quenched and it could not be return to its initial high value by means of addition of acid again. Thus, the system made up of an INHIBIT logic gate.
Effect of Grain Size and Specimen Dimension on Triaxial Shear Strength Parameters of Coarse Soil
Authors: Asreazad Saman
Published: May 2014

The triaxial shear strength of two specimen sizes of poorly-graded gravelly sand mixtures (SF) after removing a portion of the coarse aggregate by method called scalped gradation was investigated. The lower shear strength parameters obtained from small specimens for coarse soils in triaxial testing can lead to uneconomic design. In order to reduce testing costs and utilize more economic designs for coarse soils, small specimens can be used instead of large specimens; in addition, the test results can be corrected. The correlation of the triaxial test results of the two different size specimens was evaluated in this paper.
Regionalism in Architectural Design
Authors: He Li Xia , Jiao Tao , Zhang Qian
Published: May 2014

A common phenomenon in modern architecture is the over emphasis on technology at the expense of natural environment, regional culture, and human emotions. In this essay, the regionalism spirit in architectural design is introduced for future reference in architectural design.
The Effect of Dust Overload on Security of Single Layer Steel Structural Workshop
Authors: Wang Chao Nan , Zhang Bo , Hu Xiao Peng
Published: May 2014

Based on the investigation of a single layer steel structure industry workshop in Baoshan Steel Incorporated Company, the effect of dust overload on the security of single layer steel structural workshop is analyzed, which is the basis of maintenance and monitor of the building. The results show that the dust-load overload 16%, the ratio of resistance-load of roof truss, bracket and framework column separately reduce 4%,4%,0.5%. If the dust-load overload 100%, the ratio of resistance-load of roof truss, bracket and framework column separately reduce 20%, 20%,1%.
The Simulation of Foundation Pit Construction on Basis of Strength Reduction Method and the Research on its Stability
Authors: Yang Tao
Published: May 2014

In geotechnical engineering, the support pattern regularly applied is continuous wall, whose high security, strong adaptability, good stability and other characteristics have been widely appraised in engineering circles. This paper use Midas to build the three-dimensional research model on varied construction stages of foundation pit, in which the foundation pit applies the scheme of combing continous wall and inner support. Further more, this paper makes estimation on the machenical stability in varied construction stages of foundation pit and use strength deduction method to analyze the stress and strain conditions of foundation pit in different working states, the results acquired from which researches have certain reference to the engineers.
The Deformation Behavior Analysis for Deep Foundation Pit in Soft Soil Area Considering Seepage-Consolidation Coupling
Authors: Cao Li Qiao
Published: May 2014

After a literature survey, the application of 3D seepage-consolidation coupling FEM model based on Biot theory and Cam-Clay model for simulating deep excavation dewatering in soft soil is studied. A foundation pit in East-China is taken as an example and 3D finite element method is used to simulate the dewatering and excavation. Through the 3D finite element analysis, the three-dimension numerical method can be applied to study the deformation behavior of foundation pit and surrounding soil. The numerical simulation experience and data presented in the paper can be refereed in the design, construction and research of similar projects.
The Research on the Design Method of Urban Metro Viaduct and the Landscape along the Route
Authors: Zhao Jing
Published: May 2014

The design and construction of the viaduct route of the urban metro have a big influence on the urban spatial layout. As a kind of landscape structures with both dynamic and static properties, it brings not only convenient transportation but also the whole cityscapes change. This article aims to solve the effect on the urban spatial environment and the crowd around through the research on the design method of metro viaduct bridge modeling, researching the layout design of surrounding landscape along the viaduct, rebuilding the cityscape and cultural axis and exploring the method of solving the contradiction and conflicts in the process of city and metro construction.
A Study on Industrial Design Patent of Hunan Province — Based on Quantitative Analysis
Authors: Zhang Zhe Yuan
Published: May 2014

Based on quantitative analysis of the application and authorization of industrial design in Hunan Province in recent six years, the present study discussed the main factors restricting the development of the industrial design in Hunan Province, and put forward some strategies and suggestions.
Analysis and Optimization of Motor Assembly Process Flow
Authors: Wang Yun Rui
Published: May 2014

Some motor assembly enterprises manage production site according to experience, which causing process was not scientific and lower efficiency. Through researching for a motor assembly production field, analyzed and improved the process and site layout using industrial engineering method such as 5W1H and ECRS etc., optimized layout of store, reduced processing and transportation 2 times each, canceled unnecessary wait, saved transportation distance 20.6m, reduced production cycle 8.1 min, at the same time, the site operators was decreased through the reasonable allocation, greatly increased the production efficiency, make the management more scientific and reasonable.
Effect of Parameters on Properties of Polypropylene in Dynamic Injection Molding
Authors: Wang Quan , Ren Xin Ping , Sun Xiao
Published: May 2014

A Novel Self-Designed Dynamic Injection Molding Machine by Screw Axial Vibration Introduced in Plasticizing Process was Used in the Preparation of Polypropylene Standard Specimens. the Energy Consumption in the Molding Process, the Tensile Stress, Impact Stress, Density and Differential Scanning Calorimeter (DSC) of the Specimens were Measured. the Experimental Results Showed that the Maximum Increment of Tensile Stress and Impact Stress of the Specimens are 9.8%and 13.8% Respectively by Screw Axial Vibration Introduced in Plasticizing Process.The Maximum Increment of Density are 0.3%. the Melt Point of Specimens have a Significant Increase of 3°C and the Energy Consumption of the Whole Processing Decreases 6.6% at Maximum.
Evolution of the Research on Oxygen-Enriched Intake Air with Variable Composition of a Gasoline Engine
Authors: Xie Dao Wei , Jin Ying Ai , Gao Qing
Published: May 2014

This article presents the engine control studies of the various oxygen-rich aspiration constituent. Which reforms the concentration and distribution of the oxygen constituent in the cylinder before the combustion by changing the aspiration constituent and charge, to improve the active control technology of combustion and emission. Improve the quenching phenomenon at the cylinder wall and raise the high temperature at the cylinder center by controlling the distribution of the various oxygen concentrations, in order to reduce the emissions of CO, HC and the unburned particulate matter (PM), to enhance the economy of the fuel and increase the dynamic property. I make a simulation calculation of the oxygen-rich inlet of gas engine by the CFD software Fluent, analyses the oxygen-rich aspirating rules under particular condition and its adaptability to the hemispherical gasoline combustion chamber, and examines the characteristic of the distribution of oxygen constituent in the cylinder after where oxygen and air mixes.
Finite Element Analysis of Fluid-Elastic Instability of Heat Exchanger Array
Authors: Wang Peng , Hu Jian
Published: May 2014

From the viewpoint of primary theory of Finite Element Analysis, as well as practical application, the present paper sets up a model for the use of analyzing the fluid-elastic instability of heat exchanger array. In accordance with related compared velocity and mass damping parameter, the author obtains the stability diagram and analyzes the diagram of the array displacement when it reaches the critical value of flow velocity. Accordingly, the instability of heat exchanger array in critical value if flow velocity was verified.
Design and Simulation Research of Leveling Tanks System
Authors: Liu Yang , Wang Hong Bo , Liu Dong Di , Zhang Zi Lin
Published: May 2014

This paper introduced a leveling tanks system of the ship based on Visual C++. The simulation system is consisted of a leveling tank, a leveling system controller and a ship motion simulator three parts. This paper focuses on the system leveling effect, when the roll is generated by steering as well as loading and wave interference under conditions of direct of the ship. In the research of the ship rolling, which is generated by steering, tanks model combining of traditional four degrees of freedom, getting a new four degrees of freedom "Ship-Tank" movement mathematical model. We calculate the motion state of the ship, and output multiple parameter information of ship motion based on the mathematical model, and then level the roll motion generated by ship steering using control strategies. Simulation results show that, in the conditions of both direct and steering, the system is able to achieve the desired effect of leveling, and thereby it provides reliable basics for designing and researching of leveling tanks.
Analysis for Ride Comfort Evaluation of Passenger Car Traveling on Roads with Generalized Road Profiles and Conventional Speeds
Authors: Tang Ai Hua , Tian Jian Ping , Liao Ying Hua
Published: May 2014

To investigate how the conventional speeds to affect passenger cars ride comfort under a kind of road surface profiles, in multibody dynamics software (ADAMS/Car), a vehicle model was built based on the characteristic parameters of a passenger car. According to the relevant test regulations of ride comfort, the building methods of road surface profiles were discussed. Furthermore, a dynamics simulation analysis of the car was realized by ADAMS/Car and the acceleration-time histories of the seat surfaces X/Y/Z-axis under three conventional driving-speeds were acquired. A special MATLAB program was compiled to calculate the total weighted Root Mean Square (RMS) value by calling the above histories. According to the GB/T 4970-1996, a road test of a passenger car was carried out in the random road surface which equivalent to B level. The car was driven to get the values of total weighted acceleration RMS under three conventional driving-speeds. By comparing the road test result with simulation, the result indicated that the changing trend of total weighted RMS value is consistent as the driving-speed changes, and the ride comfort will decrease when the driving-speed increase. At the same time, it shows that the consistency of the simulation and road test is better.
Effects of Second Extrusion Deformation on Microstructure and Mechanical Properties of ZM21 Magnesium Alloy
Authors: Li Quan , Liu Wen Jun , Cheng Ren Ju , Jiang Shan , Luo Su Qin , Jiang Xian Quan , Pan Fu Sheng
Published: May 2014

The two-stage deformation was processed to ZM21alloy as cast at different parameter condition, and structure evolution and mechanical property was analyzed. The results indicate that the grain of ZM21 alloy as cast will be fined by the two-stage extrusion deformation, and its size can decreases from about 100μm to 15.6μm. The strength of ZM21 alloy can be raised by the two-stage deformation, up to 261.7MPa, At the same time, the prolongation rate is more than 16% by the two-stage deformation.
On Time Forecast of Short-Term Debris Flow Hazards and Risk Range in Earthquake Region
Authors: Li Chang Chun , Yi Li Yun
Published: May 2014

After the Wenchuan Earthquake, rainstorm-induced debris flows in earthquake region occurred significantly more frequently. Two large debris flows took place in Zoumaling Gully in Qingping Township, Mianzhu County, Sichuan Province during 2008 and 2010, which caused great loss to local residents. Based on model test, a forecast model for the risk range of debris flows in Zoumaling Gully was established using statistic regression methods. A hazard forecast model was established based on grey system theory, which was used to forecast the time series of recent debris flows. The results show that the forecast values are in relatively good agreement with the measured values thus can provide reference for hazard prevention and mitigation in future.
Thinking of the Water Landscape Transformation with "Benevolence" as the Main Body - Take the Yibin Vocational and Technical College as an Example
Authors: Zhang Jian Ying , Feng Xiang
Published: May 2014

In recent years, with the expansion of the scale of Yibin Vocational and Technical College, the old campus scale and facilities can not meet the requirements of teaching development. According to the institute of the eleventh five-year plan, the construction planning of campus culture facilities and the construction of the campus landscape culture is a great urgency. In view of the construction of water campus landscape, this paper expounds how to optimize the water environment of the campus, and build an healthy and harmonious campus landscape, in order to strengthen and promote the education work in vocational and technical college.
Real Time Non-Destructive Testing Methods of Welding
Authors: Kah Paul , Mvola Belinga , Martikainen Jukka , Suoranta Raimo
Published: May 2014

This work presents a review of the three most efficient non-destructive testing methods. The methods are radiography, eddy current and ultrasonic inspection. These particular techniques were chosen because they are able to cover most of the industrial needs for welding joint inspection. The aim of this work is to present the physical background of operation for the given methods, discuss their benefits, limitations, and typical areas of application, and compare them with each other. In the first part of this work, all three methods and their variations are described in detail with schemes and figures which represent their working principles. It appears that, although all the given methods can detect all types of flaws in welded joints, they have their specific limitations. For example, ultrasonic testing is able to detect defects only in certain directions. The eddy current technique is also sensitive to defect direction, but it can be applied for inspecting conductive materials only. The main flaw of radiography is the resolution: it is not usable for very fine defects. The second part of the work is for comparing the testing methods and for drawing the conclusions. The methods are compared according to the possible materials, defect types and their position, as well as the possible areas of application. This part gives the background for choosing a proper welding joint testing method for certain applications in the welding industry.
Study of the Mechanism of Distortion on the Condition of Heating of Composite Bottom Pan (CBP) Based on ANSYS
Authors: Luo Yun Hua , Yan Zhi Xiong , Xiong Jia Lin
Published: May 2014

As for the phenomenon of the bottom thermal inward convex distortion of the Composite Bottom Pan (CBP) on the condition of heating, the mechanism of the bottom distortion was researched on the basis of ANSYS 10.0 considering the structural characteristic and the heating conditions of the composite bottom pan. The results showed that the thicker the bottom of the composite bottom pan, the smaller its thermal deformation amount. The thicker the junction of the pot and wall was, the smaller its deformation. And it was helpful for reduction of deformation to use a big rounded transition. The increase of rings number of magnetic conductive sheet would lead to a less bottom thermal inward convex distortion of the CBP. The larger the area of the additional stainless steel sheet (or ring), the smaller the deformation amount. Consequently, the research laid a solid theoretical foundation for the design and optimization of the structure of composite bottom pan.
Isolation of Streptococcus thermophilus in Different Dairy Products and Analysision on CRISPR Sequences
Authors: Xiong Jian , Wang Zi Rong , Ye Jun , Ma Ai Mi
Published: May 2014

Under the experimental conditions, , specific PCR can can quickly and accurately separate the Streptococcus thermophilus from three categories of dairy products, 14.kinds of dairy products,Both primers CR1 and CR2 optimal annealing temperature was 58.0 °C, annealing temperature of CR3 is 50.0 °C, and those temperatures were used to ensure that the primer CR1, CR2 and CR3 with CRISPR sequences effective annealing, no other non-specific reaction. Gram-positive purple chain coccus, there are differences in morphology, from different samples .The CTAB method was used to extract DNA. After PCR amplification, obtaining 11 different CRISPR sequences amplification results. In six samples of yogurt, there are five kinds of CRISPR sequences, four milk samples obtain three kinds of CRISPR sequences, three kinds of cheese has three deferent CRISPR sequences.
Produce of Strong Pulse Electromagnetic Field and its Biological Effect
Authors: Li Gun
Published: May 2014

Fluorescence emission mechanism of biological tissue is very complex, and related researches have very important significance. Spectroscopy of many biological tissues has been used in clinic; this paper attends to study the mechanism and its implementation pulse electromagnetic fields. We than study the pulse electromagnetic field effect on blood brain barrier of rat by fluorescence spectral properties, which caused by the fluorescent material only could through loose membrane, the results show that pulse electromagnetic field could effect the fluorescence properties of brain in rats, mechanisms of these phenomena also analyzed.
The Mechanism Movement Design of Caving Tool in CBM
Authors: Zou Jun Yan , Zhao Jun You
Published: May 2014

Caving technology means to dig a big stable cave in CBM after drilling a hole in order to eliminate coal bed pollution, link well holes most with the coal bed and keep medium in reserve. Caving technology can raise the collection efficiency of coal seam gas. The water jet-mechanical caving tool in CBM designed in this paper can make high pressure mud open knife shafts, make high pressure mud flow through spray head to drill the coal bed and make bit mechanically drill as well. The general design of caving tools structure is provided in this paper. Movement design of knife shafts which are the basic components in caving tool and optimal internal diameter of hydraulic cylinder bottom are given in this paper as well. The work can lay a foundation of latter detailed design of caving tools structure.
A Mechanical Analysis of BHA Used in Casing-Window-Milling for Sidetracking
Authors: Xu Zhao Hui , Gao De Li
Published: May 2014

As more and more sidetracking old wells are required in mature fields, a lot of applications in casing window milling technology, such as drilling for unconventional oil and gas, multi-lateral wells and laterals, are applied. In this paper, the mechanical properties of the BHA in different stages of window milling for sidetracking are analyzed in detail. Based on the commonly-used vertical and horizontal bending analysis, mechanical analysis models of BHA with three bits for windows milling are proposed. With these mechanical analysis models, different mechanical parameters of window milling BHA at different stages during the window operation can easily be calculated. The research achievement in this paper is helpful not only to understand the relationship between drilling parameters and drill string, stress and deformation of bits, but also to predict the side force and direction of bits and to determine the size of the drill string deformation. It can also provide references to BHA design and the selection of sidetracking operation parameters.
High Temperature Deformation and Corrosion Behavior of 2205 Duplex Stainless Steel under Low Strain Rate of 0.005 s-1
Authors: Yang Yin Hui
Published: May 2014

The effect of deformation temperature on microstructure, flow stress and corrosion resistance of 2205 duplex stainless steel was investigated at low strain rate of 0.005 s-1. The flow curve analysis showed that the specimen was mainly characterized with dynamic recovery (DRV) at 850 °C, and the characteristic of dynamic recrystallization (DRX) was enhanced with deformation temperature increasing to 950 and 1050 °C, then flow curves presented steady state with characteristic of DRV at 1150 and 1250 °C. Microstructure analysis exhibited the austenite DRX at deformation temperatures of 1050 and 1150 °C. The specimens deformed at temperatures ranging from 850 to 1250 °C and strain rate of 0.005 s-1presented active-transpassive behavior, indicating faster corrosion rate compared with the as-received, which can be attributed to more ferrite (δ) and austenite (γ) grain boundaries or δ/γ phase boundaries formation.
Influence of Floor Opening Location on the Dynamic Characteristics of the Building
Authors: Zhang Peng
Published: May 2014

Based on the frame structure of a floor partial discontinuity, the paper using SATWE software, analyzed dynamic characteristics of the structure and focused on the effect of floor opening position on natural vibration period, and provided reference for the design of building floor partial discontinuity.
Stratospheric Airship's Analysis of Application Prospects and Exploration of Critical Technologies
Authors: Wei Tao , Chen Lan , Yang Jie , Hao Cheng Long , Zhang Ke Yi
Published: May 2014

Along with the rapid development of correlative technology in the 21st century comes the upsurge of research and exploitation for stratospheric airship around the world. In this paper, on the basis of the unique strengths of stratospheric airship, we analysed its prospects of application in the fields of communication and earth observation. Besides, we explored the status quo of development and key techniques concerning the stratospheric airship, which lead a significant role in the reference and guidance for future development of advanced information technology and building of national defence.
Design and Implementation of Workflow Management of PDM System of Drilling Rig
Authors: Liu Gui Qin
Published: May 2014

Workflow is a key technology of process management and process control in PDM system. It introduce the definition of workflow and the workflow management model ,and define standard process of all kinds of documents management graphically and task nodes of different business process, which include design flow and drawings change process. It makes the manageability enhanced, and improve the automatization and the efficiency of flow execution, realize the workflow management in the design of drilling rig.
Reliability Study of Aviation Equipment
Authors: Li Jun , Dong Qing Wei , Zhan Ye , Yu Xiang Bin
Published: May 2014

It is well-known that reliability of equipment is the most important of all performance to all equipments. In order to make the equipments which include mechanical equipments, electrical equipments and so on work normally, reliability theory FMECA is applied in an aviation equipment to study its reliability and improve operational reliability of the product. Through its reliability mathematical model, average of operational time is predicted based on calculating failure probability of all electrical components. According to the process of FMECA, all kinds of the failure mode, reasons, effects and criticality of the products can be determined completely. By comparing these criticality data as shown, the paper analyses adopted method by that the contents, accents and operating process of maintenance may be instituted finally. FMECA-based method for reliability study of the equipment and the equipment maintenance perform well. The results indicate that application of FMECA method can analyze reliability in detail and improve operational reliability of the equipment. Therefore this will supply theoretical bases and concrete measures of maintenance of the products to improve operational reliability of products. FMECA can be feasible and effective for improving operational reliability of all equipments.
In Situ Testing and Analysis of Thermal Properties of the Ground Formation in Jiangsu, China
Authors: Chen Shuai
Published: May 2014

Ground source heat pump (GSHP) systems exchange heat with the ground, often through a closed-loop, vertical, borehole heat exchanger (BHE). The performance of the BHE depends on the thermal properties of the ground formation, as well as soil or backfill in the borehole. The design and economic probability of GSHP systems need the thermal conductivity of geological structure and thermal resistance of BHE. Thermal response test (TRT) method allows the in-situ determination of the thermal conductivity (λ) of the ground formation in the vicinity of a BHE, as well as the effective thermal resistance (Rb) of this latter. Thermal properties measured in laboratory experiments do not comply with data of in-situ conditions. The present article describes the results of thermal properties of the BHE whose depth is 100m in Yancheng City, Jiangsu Province, China. As shown in these results, λ and Rb of borehole are determined as 1.84(W·m-1·K-1) and 0.121 (m·K·W-1) respectively.
Implementation Aware Hardware Trojan Trigger
Authors: Yoshikawa Masaya , Mori Yusuke , Kumaki Takeshi
Published: May 2014

Recently, the threat of hardware Trojans has garnered attention. Hardware Trojans are malicious circuits that are incorporated into large-scale integrations (LSIs) during the manufacturing process. When predetermined conditions specified by an attacker are satisfied, the hardware Trojan is triggered and performs subversive activities without the LSI users even being aware of these activities. In previous studies, a hardware Trojan was incorporated into a cryptographic circuit to estimate confidential information. However, Trojan triggers have seldom been studied. The present study develops several new Trojan triggers and each of them is embedded in a field-programmable gate array (FPGA). Subsequently, the ease of detection of each trigger is verified from the standpoint of area.
Modular Design of Urban Furniture for Relaxing and Dining Based on the Iranian-Islamic Life-Style
Authors: Faraji Ali , Daeechian Yosra
Published: May 2014

What can mean Iranians life, is identity thats comes from their rich culture and its roots refer to native Iranians customs and Islam commands. Family in Iran is the basic and main element in the society that because of keeping Iran identity and culture, should attention to its essential requires. Keeping close and effective relationships among Iranian family members can be achieved by designing recreational spaces for spending Leisure. The main purpose of this paper is designing urban furniture for families resting and serving a meal in the urban space. Unfortunately in the current product there is not any sign of Iran-Islamic costume and culture. By making use of library as well as field research by employing questionnaire, personal interview and observation manners as interaction design tools, design criteria are obtained and finally, the premier design with details is illustrated.
Construction of Cable Digital TV Head-End
Authors: Zhang Yang
Published: May 2014

The basic structure of Cable Digital TV Head-end System is presented in this paper. Cable Digital TV Head-end connected between the TV Signal Source and the Transmission Line is a system which can convert a variety of signal sources into a transport stream to meet the exacting standards of the transmission. The transport streams will finally be sent to service terminal by the transmitting device and the existing network. This paper gives the method of constructing Cable Digital TV Head-end System and some useful suggestions about the selection of equipment.
Dual Resource Constrained Job Shop Dynamic Scheduling with Local Time Window
Authors: Huang Yuan , Yan Xiu Tian , Li Jing Yao
Published: May 2014

To solve the Dual Resource Constrained Job Shop Dynamic Scheduling Problem with heterogeneous workers (DRCJDSP-HW),a three-tier dynamic scheduling system including dynamic disturbance analysis, dynamic disturbance evaluation and dynamic scheduling method was constructed based on the idea of scheduling with local time window. To minimize the revision of old scheduling scheme in DRCJDSP-HW, a hybrid dynamic scheduling algorithm was proposed based on the chromosome reduction mechanism and the scheduling optimization of local job in stages. The outstanding application effect of the dynamic scheduling system and the hybrid dynamic scheduling algorithm were validated reducing the influence of dynamic disturbances effectively by simulation experiment at last.
On Detection Technologies of Pre-Stressed Duct Grouting Fullness
Authors: Li Chang Chun , Yi Li Yun
Published: May 2014

Aging and deterioration (such as weakening of concrete strength and loss of prestress) of various degree will inevitably happen to prestressed concrete beam in service. In making the prestressed concrete beam, it is of vital importance to ensure that the prestress tension is sufficient, duct grouting is compact enough and concrete pouring is in good quality. Otherwise, structure will deteriorate faster and safety hazard and even bridge collapse may ensue, causing considerable economic losses.
The Design of Flash Network Courseware
Authors: Liang Wei Yan
Published: May 2014

Flash has become the major technique in developing network courseware. This paper analyzes the advantages of flash network courseware: compactable size, outstanding animation effect, effective interaction and network spread convenience. In addition, it introduces the design process and main content for developing a flash courseware. Finally, it analyzes the major methods for adopting Flash in developing network courseware.
An Unequal Fan-Shaped Cluster Routing Protocol for Wireless Sensor Networks
Authors: Bai Xu , Wang Chang Hong , Zhang Jia Yan
Published: May 2014

A cluster-based network topology can increase the scalability and lifetime. However, the area around the Sink node forms a bottleneck zone due to heavy traffic-flow, which limits the network lifetime in WSN, the energy of the nodes closer to the sink node is depleted very quickly and the network die early, so it is important to ensure that the network energy dissipation is balanced. In this paper, an unequal fan-shaped clustering (UFC) model was proposed, which can lead to more uniform energy dissipation among the entire network, thus increasing network lifetime. The results show that UFC can lead to more uniform energy dissipation in a homogeneous network and prolong network lifetime.
Research on Renewable Resources Industrial Synergy Policy System in China
Authors: Liu Guang Fu , Zhang Shi Bin , Zhang Lei
Published: May 2014

With the guidance of sustainable development strategy, countries around the world poured to carry out the conception of circular economy into the strategy of protecting ecological environment. As an important mode of circular economy, Renewable Resource Industry increasingly draw every parts of worlds attention. However, the Renewable Resource Industry is a typical Institutional Economy, which needs the role of government as well as the market mechanism. However, Renewable Resources Industry is in the primary stage of development, whose policy system is not thorough and guiding concept is not clear. In this background, guided by the full life cycle theory and collaborative theory, starting from the features and realistic demand of Renewable Resources Industry, the authors structure an industrial synergy policy framework for Renewable Resources Industry, which including design policy, manufacturing policy, consumption policy, recycle policy, demands policy and government policy. The research findings provide us with systematic ideas and methods to make the Renewable Resources Industry policy.
Voltage Phase Difference Detection for Superconductor Quench
Authors: Wang Shi Feng , Yue Yi Xiang , Fang Jin
Published: May 2014

In this paper, the actual operation of the superconducting motor and electrical parameters, a detailed analysis of the advantages and disadvantages of the existing quench detection method. After that I proposed an innovative detection method - voltage phase difference detection. On this basis, the design phase detection method based on the voltage difference quench detection and protection systems, based on stand-alone test and NI development platform test results, we verify its feasibility of the voltage phase difference detection method, and great superiority.
The Study on Network Practice Platform of Higher College of Engineering
Authors: Pan Wu Min , Guan Chao
Published: May 2014

Network practice teaching platform is designed with engineering students in College of Engineering learning as the center of the learning, which mainly includes the learning environment design, ruing activity design and the information resources design. The main content of platform includes: teaching practice bulletin board, practice appointment management, scores query management, practice material management and interactive discussion area.
Enterprise Inventory Management and Simulation
Authors: Wang Yun Rui
Published: May 2014

Inventory is an important link in supply chain, according to characteristics and objectives of inventory control, the reasonable safety inventory, order point, the highest inventory and inventory strategy were determined based on historical sales data. Using Witness simulation software, the optimal strategy was selected from nine inventory strategies by running simulation model for one year. If goods shortage was allowing, the seventh schemes (72000,158100) was better ,the minimum total cost was 888158 yuan ; considering allowing a small amount of shortage, the cost of eighth schemes ( 82000,158100) was least of 1095167; the third scenarios (92000,138100) was selected if without shortage, and the minimum total cost was 1254909 yuan. This shows, the application of computer simulation to assist in the management of inventory is scientific and feasible, it can help enterprises to save the order and operation cost.
Research on Release Method of Railway Station Loading Capacity Information Based on Game Theory under E-Business
Authors: Feng Li Yuan , Zhu Xiao Ning
Published: May 2014

To find the release method of railway station loading capacity information under E-business, the concept of game theory was introduced into analyzing the owners response to guidance information. In this paper, we found the loading operations in station are influenced after releasing information of station loading capacity. Besides, the descriptive information has fewer effects on the balance of loading operations. However, the propositional information makes contributions to distributing cargo flow reasonably which increases the efficiency of station loading capacity.
The KPI Evaluation Method of Logistics Service in Railway Logistics Enterprises
Authors: Liu Xiao , Zhu Xiao Ning
Published: May 2014

To improve the level of enterprise performance management and logistics service,this paper proposed the KPI evaluation method of logistics service in railway logistics enterprises. By analyzing the strategic target of railway logistics enterprises logistics service, I decomposed the railway logistics enterprises strategic target to get the key evaluation indicators system of the logistics service in railway logistics enterprises, and used AHP to determine the index weight. Finally, I used the percentage method to evaluate the logistics service of railway logistics enterprises.
Implementation of Web-Based Expert System for Forest Fire Prevention
Authors: Tao Xiao Ming
Published: May 2014

In this paper, we have a research of expert system application in forest fire prevention. Carefully analyzing and studying the method and the way of extinguishing forest fire, hard summarizing the domestic and international forest fire prevention technique, making use of the expert system, the WEB technique and the technique of COM, We have designed a network expert system which may predict the fire and may save reasonable with a fire after taking place.
Study of Hydrogen Permeation in a Micro-Alloyed Heat Treated Steel
Authors: Lopez-Perrusquia N. , Doñu-Ruíz Marco Antonio , Ortega-Herrera J.A. , Urriolagoitia-Calderón G. , Vargas-Oliva Yahir Edgar
Published: May 2014

In this work, an experimental research was conducted to determine of effects hydrogen permeation a micro-alloyed heat treatment steel in order to determine the mechanical properties of the material in this work [1]. Small specimens were taken from the micro-alloyed API-X60 steel. Moreover, by the technique of the three-point test according to ASTM 399-90, the load-displacement curves for each heat treatment with and without hydrogen permeation are determined. Likewise the samples were then mechanically tested for hardness by the technique of nanoindentation to obtain the elastic modulus and hardness of the studied specimens [2]. Scanning electron microscopy (SEM) determines the type of fracture; also EDS revealed the type of precipitate formed in the surface of the material [3]. The optical analysis showed the following microstructures; ferrite/pearlite, bainite/ferrite and martensite/retained-austenite [4]. Finally the experimental and statistical results showed effect of hydrogen permeation and heat treatment on the mechanical properties of the micro-alloyed API X-60 grade pipeline steel.
Effect of Voltage Parameters on Surface Morphology of Micro Arc Oxidized Cp Titanium
Authors: Yazici Selim Kaan , Muhaffel Faiz , Baydogan Murat
Published: May 2014

In this study, commercially pure titanium (Cp-Ti) was micro arc oxidized in an alkaline solution by using a bipolar power supply capable of applying square voltage pulses. In the oxidation process, voltage level and numbers of positive and negative pulses were varied, and the effect of such parameters on surface and cross sectional morphology of the coatings were evaluated. In characterization works, X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), coating thickness measurements and surface roughness measurements were employed. Results generally showed that coating thickness and surface roughness greatly depend on the voltage level in that higher voltage levels give thicker coatings and rougher surfaces. When the number of successive positive voltage pulses is increased, more uniform surface appearance with well distributed and equal sized micro pores are obtained up to 400 V of positive voltage. When the oxidation is performed for positive and negative pulse numbers of 10-1 at higher voltage levels, the average pore size of the coating thickness increased and the number of pores decreased.
Phase Transformation in Granular Alloys of Cu2S-Ni3S2-Na2S System
Authors: Selivanov Evgeny N. , Udoeva L.Yu. , Selmenskich N.I.
Published: May 2014

The effect of Na2S on the phase composition and microstructure of tempered Cu2S-Ni3S2 alloys was studied by X-ray diffraction, optical microscopy and electron probe microanalysis (EPMA). It was found that quick crystallization of the sulfide melt leads to separation into two phases - Ni3S2 and a solid solution of Cu2S with Na2Cu4S5, moreover, nickel is concentrated in large particles and copper – in small ones. In contrast to the fine dendrite solidification of granular Cu2S-Ni3S2 alloys, in the ternary system there is a well-defined two-phase microstructure with rounded borders of the interface. Friability and a low microhardness of Cu2S - Na2Cu4S5 solid solution provide an autodecomposition of the sulfides melt by quenching into water (granulation). The degree of separation of copper and nickel depends on the overheating temperature and a quantity of Na2S in melt. The results can be used to hydrometallurgical processing of copper-nickel convert matt.
Self-Diffusion on Pd(111) from the Point of View of the Band Model of Diffusion
Authors: Baník Ivan , Lukovičová Jozefa , Pavlendová Gabriela
Published: May 2014

In this article we present a different view on the results of experimental investigation of the self - diffusion on Pd (111) published in „Surface Science“ [1]. Our consideration is based on the band model of diffusion. This model is able to explain the Meyer-Neldel rule (MNR) and to clarify “puzzles” mentioned in [1]. The aim of this article is also to familiarize the readers with this model, to the band model of diffusion.