bluuebunny/crossref_metadata_2025 huggingface dataset:
ESP Teaching in Technological Institutes
Authors: Yu Ying
Published: May 2013

Based on the nature and features of ESP teaching in China, this paper analyzes the curriculum position of ESP, puts forward strategies of developing ESP teaching in China: construction of teaching staff, construction of teaching materials, conducting teaching research and construction of evaluation system.
Analysis of Car Interior Noise Induced by Refrigeration System in Air Conditioners
Authors: Ji Ming Hui , Hu Ping , Li Ji , Cai Yun Peng
Published: May 2013

Though the test of a certain domestic car which cause the car body vibration and cab noise under the idle with turning on and off air conditioning system. The result of the test is analyzed by sound pressure and vibration spectrum, which analysis spectrum-frequency characteristics, affecting factors and noise sources of noise.Finding out the main noise and vibration of interior noise caused by air conditioning and refrigeration system; the car dash panel and body wall is the main transmission route of cab vibration;the people feel uncomfortable when opening the air conditioning under idle, because beat frequency is caused by the compressor and engine. It provides a certain reference for the reduction of noise and vibration of car's air conditioning and refrigeration system.
Research and Application of Project-Based Teaching in the Multi-Media Technology
Authors: Li Bing , Wu Xiu Qin , Du Juan
Published: May 2013

The traditional multimedia teaching is often applied in the form of case teaching. As the cases are mostly specific and limited, students cant use software agilely. Through the project teaching method, students will learn in a cooperative way by accomplishing a practical or scientific project. Thus, the method would stimulate students' interest in study, improve the teaching effect, and develop the students' team spirit and innovation ability.
Study of Production, Teaching and Research Integration in Training of Material Engineering Talents
Authors: Guo Xiao Fei , Yin Da Lei , Xu Bin , Wang Yue
Published: May 2013

The training of material engineering talents aims to meet the social development needs and cultivate comprehensive talents who have strong creative ability and practical ability, while integrated teaching mode is the best way to improve their comprehensive ability. Combining with the present development of production, teaching and research integration of our country, this thesis will discuss specific measures in training of material engineering talents from view of innovative and practical talents training and provide application prospect of integrative operation.
Application of Experimental Modal Analysis Method in Researching of Mechanical Structure Dynamic Characteristics
Authors: Yu Zhang , Cai Wen Zheng
Published: May 2013

With the purpose of realizing the analysis of mechanical structure dynamic characteristics and inhibit vibration and noise, combined with the analysis of a certain type of high speed sewing machines vibration characteristics, we carry on the concrete experimental modal analysis, and compare the results of the experimental modal analysis with the results of spectrum analysis. The analysis results show that the second order natural frequency of the shell is close to two octaves under the normal working speed of sewing machine and it will lead to resonance. Enhancing the structural rigidity and the natural frequency under this modal to avoid resonance frequency is the key to improve vibration resistance of the structure.
Study on Multimedia Education System of Technological College
Authors: Hu Yu
Published: May 2013

Computerized teaching has the advantages of eliminating bias and prejudice, while accessing the Internet and its vast amount of resources. Due to the rapid development of computing and its related fields, computers have more capacity and more speed than before. Computer software parallels hardware improvements, becoming more powerful and difficult for one to grasp. These hardware and software improvements create complex and difficult teaching environments. In our paper, we will introduce application of multimedia education in technological college.
Study on Construction and Application of Self-Adaptive Network Virtual Laboratory
Authors: Zhang Li Xia , Liu Guang Ran
Published: May 2013

To facilitate the independent learning and safety experiments, the network virtual laboratory is one of the hot spots of the current research. After analyzing advantages and disadvantages of the current virtual laboratory, this paper introduces the web-based and self-adaptive virtual laboratory platform, with a three-tier structure of the B/S mode. And the platform has two groups of users: teachers and students. Teachers can customize experiments which can be performed by students in the platform. The formation of the experiment consists of two parts: the equipment based on object-oriented ideas and used geometric modeling technology, which has more realistic effect, and achieves real-time rendering; And environmental background using cylindrical panoramic technology, which has photo effects, and loading faster. These two parts is combined through photography geometric principles. The experiment proved that in this virtual laboratory platform, the experiment is loading fast, have stronger sense of immersion and effectively improve the students' network learning efficiency.
Measurement and Research on Stage Machinery Noise in Theatre
Authors: Zhang Jing Jing , Jiang Yu Jian , Su Zhi Bin , Ren Hui
Published: May 2013

In this paper, we studiedthe stage machinery noise in theatre by simulation and measurement. Theconclusion proposed in this paper shows that the region closed to proscenium ismore representative when evaluating or measuring stage machinery noise.Therefore, during the measurement of stage mechanical noise, it is better tochoose the first row of stalls as the representative area than only the middle seatwhich is specified in recent standards and specifications.
Research Development of the Anti-Micro Vibration of Precision Equipment
Authors: Dong Xin Hua , Hao Zhi Ming , Jia Bin , Hou Mu Yi
Published: May 2013

This paper provides a illustration of the micro vibration measurement as well as the major vibration source of precision equipment. According to propagation and attenuation law of vibration in the soil, this paper gives some methods of control vibration which used in practical projects. And it inntroduces the anti-micro vibration measures in the design of precision equipment.
Research on the Application of Body Force in Calculations for Submarine Powering Performance
Authors: Lv Xiao Jun , Zhou Qi Dou , Xie Zhi Yong
Published: May 2013

Using CFD software, the mean wake fraction and thrust deduction fraction are obtained by simulating the flow field around submarine with equally distributed body force adopted to simulate the affection of propeller. The open water performance of propeller 4118 was applied to calculate the rates of propeller rotation required by the submarine at different speeds and corresponding propulsive efficiencies. The comparison between these data and the calculated results of self-propulsion test indicates that a more accurate prediction of the submarine powering performance can be made with the mean wake fraction obtained near the leading edge of the propeller, and the computational error of propulsive efficiency can be reduced to 2%. Research of this paper shows that submarine powering performance can be calculated effectively with the propeller replaced by body force.
Research on State Monitoring Method of Coal Shearer Vibration
Authors: Zhang Dong Jin , Liu Di , Zhao Xin Ying , Xue Guang Hui , Wu Miao
Published: May 2013

In recent years, coal mining machines intellectualization, automation, digitization and informatization have become the development trend in coal mining industry and have gotten more and more researchers attention. This paper presents the research on the vibration state monitoring method of a coal shearer. It shows the vibration intensity of the traction system is quite low when the machine is running, so the fault probability for this part caused by vibration is very low. The research will be beneficial to understand the vibration characteristics of the coal shearer, and provides methods of structure optimization design and fault diagnosis for a coal shearer.
Structural Design and Dynamic Analysis of Anti-Reversion Mechanism of Feed Mechanism
Authors: Yang Li , Sun Zhi Li , Wang Yu Ning , Zhao Qian Li
Published: May 2013

Because of easy for the bomb-stirring system of feed mechanism to reverse at its non-working position, which can affect the stability of the whole system. Virtual Prototyping Technology can help people to complete the design of overall structure of feed mechanism and anti-reversion mechanism of automaton. ADAMS, one kind of dynamics simulation software, can help to complete the motion characteristics analysis of anti-reversion mechanism, achieving the motion law of mechanism parts and movement dynamic characteristics, as well as verifying the rationality of the design of mechanism.
Spatial Vibration Characteristics of Four-High Rolling Mills
Authors: Zheng Yong Jiang , Shen Guang Xian , Li Yi Geng , Li Ming , Liu Hong Min
Published: May 2013

The contemporary four-high mills are unstable and four-high rolling mill vibrations take place in six DOF leading to spatial behaviors involving vertical, horizontal, axial, reverse, cross and swinging vibration modes resulting in complex relative motions between the rolls. In this paper, a spatial vibration characteristic analysis of two four-high rolling mills with different stability will be presented based on the transfer matrix method (TMM) and Finite Element Method (FEM). The natural frequency and mode shape of four-high rolling mill are obtained. Vibration experimental results will be presented to prove the validity of the spatial vibration of rolling mill.
Concept Designs of Headstock Gear for Large-Span Gate
Authors: Peng Xu , Wu Chang Lin , Kim Chol Su
Published: May 2013

Large-span gates with the width of 60m~120m were planed in a lake of China. This paper describes concept designs of headstock gears available in sandy-freshwater. Locomotive engine, with hydraulic-motors & gears, was the selection to drive the floating sector gate; The V-rotating gate was driven by rods or hydraulic-motors.
Tooth Surface Equations of Offset Orthogonal Face Gear and Simulation
Authors: Peng Xue Yu , Li Qing
Published: May 2013

Face gear transmission is widely applied for large transmission torque, low vibration and noise, high contact ratio, not sensitive to the axial error and so on. The curved tooth face gear tooth surface geometry is different from the common spur or helical face gear. In this paper, to offset orthogonal curved tooth face gear as the research object, meshing with involute cylindrical worm, studied its tooth surface equations. With MATLAB, SOLIDWORKS and other computer-aided analysis tools, simulating the real tooth surface, drawing the offset orthogonal face gear model respectively.
Research on Resistance Characteristics of Hydraulic Oil through T-Type Equal Diameter Duct
Authors: Bao Li Qun
Published: May 2013

The formulae of resistance loss for combined and divided flow through T-type equal diameter duct and correlations between resistance loss coefficient in each branches were derived from energy method, on this basis, the numerical simulation studies on resistant characteristics of laminar oil in T-type equal diameter duct with different flow model applying for hydraulic pipeline were conducted by using CFD method, and the reasons induced resistance loss were analysed base on the pressure change mechanism in the flow field, additionally, the numerical results indicate that the resistance loss of hydraulic oil through T-type duct relations with magnitude and matching direction of the flow speed in each branches, and can be applied to optimize the design of hydraulic pipeline, and reduce energy loss.
Simulation of Coolant Flow and Heat Transfer for Hydraulic Free Piston Engine Water Jacket
Authors: Li Peng , Yuan Zhao Cheng , Guo Chao , Yu Ying Xiao
Published: May 2013

The development of hydraulic free piston engine (HFPE) in China is still in the beginning stage of exploration. Based on the project of research group, the coolant flow and heat transfer of water jacket’s for the HFPE were simulated with the three-dimensional CFD software FLUENT, and the field information of the velocity field, pressure field and the transfer coefficient of coolant in the water jacket were achieved. The results indicate that the requirement of cooling system can be meet except some small problems, but it provides a reference for the engine design in the future.
“Reversible” Machine with Applications in the Field of Fluids
Authors: Detzortzis Antonio , Băran Nicolae , Carnaru Stelian
Published: May 2013

The paper presents a new type of machine that can be used as well as working machine or as force machine. The machine consists of two purpose-machined rotors that rotate with the same speed inside a casing; relations used for the computation of machine flow rate and power are presented, as well as results of experimental researches performed for an experimental model tested on a setup.
Calculation of the Coefficients of Ships Resistant Force in MMG Model Based on CFD
Authors: Yang Lin Jia , Tao Yi Han
Published: May 2013

With the rapid development of computer, computer simulation is a reasonable way to study the maneuverability of a ship. The accuracy of ship motion mathematical model has a great effect on research results. The resistant coefficient is a crucial parameter to ship models rapidity. Hence, it is significant and practical to research how to calculate a precise resistant coefficient. This paper introduces the theoretical calculation of ship resistance coefficient and methods to get ships hydrodynamic force based on CFD theory. With the commercial CFD software Fluent, we make numerical calculation for sailing ship based on turbulence theories, and get the ships resistant coefficients of MMG (usually called Maneuvering Model Group) model. Instead of making traditional model-scale numerical calculation, we made full-scale distributed numerical calculation with high-performance computers. After comparing the calculation results with the real ships resistant coefficients, which were obtained by actual host power and ships velocity, there is a conclusion. The calculation results are very close to the real ships resistant coefficients, since the Reynolds number and the Froude number of calculation model are almost equal to those of the real ship. Computer simulations of ships circle turning were made respectively with the resistant coefficients we got and previous estimation formula of MMG model. The simulation result of calculated resistant coefficients was closer to real ships circle turning.
Research of the Refrigeration System of Atmospheric Bridge Type Water Steam Jet Vacuum and Engineering Application
Authors: Feng Yan Feng , Wei Jiu Hong , Wei Hua
Published: May 2013

The steam jet vacuum refrigerant device works through the water three state physical change processes, and translates potential energy of low-pressure and low-grade steam into kinetic energy as power source, makes low temperature water above 0°C by water as refrigerant and coolant. The design principle of the device follows the first, the second law of thermodynamics and flow continuous law of hydromechanics, the device adopts installation method of air bridge type, waste heat of steam pressure during 0.05~0.3MPa is source of power,the system adopt 3 effect instead of traditional 2 effect in order to achieve the purpose of energy saving operation, COP value of the refrigerating system is greater than 0.8, refrigerating output of single sets is more than 6000kw. The device is consists of evaporator, the main ejector, the main condenser, auxiliary ejector, auxiliary condenser, water jet and gas-distributing cylinder. And application directions of the type device are studied.
Numerical Investigation on Water Flow in Engine Cooling-Water Jacket
Authors: He Zhi Xia , Zhang Liang , Jiang Zhao Chen , Shao Zhuang
Published: May 2013

The engine cooling water jacket has a major impact on the efficiency of the engine. In this paper the flow in the cooling water jacket of the six-cylinder four stroke water-cooled diesel engine was studied with the commercial software of STAR CCM+. Results of the simulation reveals that velocity has little effect on the flow field distributions. Dead zone in engine cylinder head appeared far away from the inlet of the flow. But it could be avoided or improved effectively by arranging the inlet and outlet at opposite side of the cooling water jacket. Further study suggests that a good flow field distribution can be achieved near the entrance if one inlet was put at the same side of the outlet and the other the opposite side, while the wall was impacted fierce due to the strong turbulence and eddy existed. Finally some advices were given to solve the problem.
Analysis on Critical Speeds of the Rail Vehicle Based on SIMPACK
Authors: Wang Li Hua , Huang An Ning , Liu Guang Wei
Published: May 2013

Critical speeds are the important indicators when evaluating the dynamic performance of the rail vehicle. In this paper, the whole multi-body dynamic model of the rail vehicle was proposed based on the theory of multi-body dynamics in the software of Simpack. And the linear and nonlinear critical speeds of the whole rail vehicle inspirited by the track spectrum were simulated. This will provide a basis for analyzing on the whole rail vehicle.
Calculation of Heat Transfer Coefficient of Wavy Fin-and-Tube Heat Exchanger of Air Source-Heat Pump
Authors: Wang Yan , Li Jiu Ru , Kong Xiang Peng
Published: May 2013

Air side heat transfer coefficient is a key problem to study thermal regime of air-cooled units. Five commonly used equations for calculating the heat transfer coefficient of wavy finand tube heat exchanger of air source heat pump and scope of application were analyzed. According to the typical example, all the solutions of equation are calculated for the five methods. Comparing between theoretical data and experimental data, the experimental results are basically consistent with the theoretical solution J factor method and McQuiston method is recommended as the optimal method for calculating the heat transfer coefficient of wavy fin and tube heat exchanger. It is provided theoretical basis on optimal design and thermal characteristics.
Thermal Error Modeling of Precision Positioning Stage
Authors: Wang Jing Shu , Feng Ming Chi
Published: May 2013

As the thermal deformation significantly impacts the accuracy of precision positioning stage, it is necessary to realize the thermal error. The thermal deformation of the positioning stage is simulated by the finite element analysis. The relationship between the temperature variation and thermal error is fitted third-order polynomial function whose parameters are determined by genetic algorithm neural network (GANN). The operators of the GANN are optimized through a parametric study. The results show that the model can describe the relationship between the temperature and thermal deformation well.
The Analysis and Discussion of the Actual Case about the Differential Protection Malfunction Caused by the Transient Exciting Current of Large-Scale High-Voltage Main Transformer at the Time of Switching
Authors: Gao Yang , Liang Guo Yan
Published: May 2013

In this paper, based on the choice of voltage level 500kV for large transformer differential protection of maloperation accident actually as an example, discusses how to improve the reliability and the transformer differential protection with the relationship between pressure test. Analysis found that in order to avoid the excitation transient exciting current transformer differential protection sparked the misoperation, on-site technical personnel in the differential protection setting calculation process, make use of data in conformity with the relevant parameters, rules and standards, familiar with differential protection, also need to understand the characteristics of transformer excitation transient exciting current high-voltage tests, the influence of characteristic more should fully exert the modern PC wave record device, instrument function can improve the actual effect of transformer differential protection. This factory for transformer differential protection for setting, protection greatly improves the reliability. This experience is worth popularizing.
Application of Corrected Clarke’s Transformation to the Solution of the Modal Analysis of Un-Transposed Transmission Lines
Authors: Zhang Qing Chao , Jia Peng , Jia Xin Hua , Wei Chao
Published: May 2013

Clark’s transformation can be used to conduct a modal analysis of perfectly balanced three-phase lines. For un-transposed transmission lines, the parameter matrices of line such as impedance matrix and admittance matrix are no longer symmetrical matrices, so Clark’s transformation can’t be used directly in modal analysis. Nevertheless, it still plays an important role in determining the exact phase-mode transformation matrix. This paper showed how this can be done by a series of matrix transformation starting with Clark’s transformation and then used the corrected Clark’s transformation in modal analysis.
The New Type of Reactive Power Compensation Device under Direct Current Control and Indirect Current Control
Authors: Han Yan , Zhang Xiaoming , Yang Pan Pan
Published: May 2013

This Paper Briefly Describes the Basic Principle of Reactive Power Compensation and Introduces the Indirect Current Control and Direct Current Control Method Based on Instantaneous Reactive Power Theory. Compare the Two Control Theory and Use the MATABLE Simulink Environment to Analyzing the Difference between the Two Methods
Study of Influence on Power System Voltage Stability of Wind Farm Power Output Fluctuation
Authors: Xu Jian Yuan , Qi Wei Fu , Teng Yun
Published: May 2013

This paper mainly studies wind power fluctuations how to affect voltage stability after the wind power grid integration, and reactive power compensation equipment on improving effect. In certain parts of the wind farm, for example, firstly, analyzing the wind farm reactive power problems. Then introduce the reactive power compensation equipment that used in the wind farm. Finally, with PSCAD software, making a simulation analysis about the influence on the power grid voltage according to adopting the different reactive power compensation devices or not.
Research on the Formula of the Height of Bearing Push-Extend under-Reamed of the Push-Extend Multi-under-Reamed Pile
Authors: Qian Yong Mei , Liu Xiao Long , Wang Ruo Zhu
Published: May 2013

As there is no definite calculation formula of the height of bearing push-extend reamed of the Push-extend Multi-under-reamed Concrete Pile at present, in the paper, according to the theoretical analysis and the experimental achievements on the failure principle of the soil of the Push-extend Multi-under-reamed Concrete Pile, it is made that using the theory of shear resistance to carry on the analysis, deduce the check formula of the height of bearing push-extend reamed of the Push-extend Multi-under-reamed Concrete Pile, and it is put forward that the reliable theoretical basis of the Push-extend Multi-under-reamed Concrete Pour Pile foundation design for practical engineering.
The New Approximate Calculation Method for the First Order Reliability
Authors: Hao Gang Li , Wang Wei Zao , Liang Xu Li , Wang Hai Bo
Published: May 2013

One new method is presented for computing engineering structure reliability by accelerating convergence based on the analysis of errors in the center point method and borrowing ideas form the merits of the other First-Order Second Moment (FOSM) methods. The accelerating convergence method is based on the first class Chebyshev polynomials. Firstly, the transformation relation of the first class Chebyshev polynomials and the power polynomials is given and expanded to vector formula. Secondly, the outstanding function approximate character of the first class Chebyshev polynomials can supply the high order information for the choosing of approximately surface. An example shows that the method presented in this article has well precision. Although the accelerating convergence method needs choose the format of the structural function properly for get the high precision results, the method can serve as an effective for engineering estimate owing to non-iterative formula and convenience.
Components Importance Analysis Fault Tree of Power Transformer of Gi Simangkuk Switchyard in Indonesia
Authors: Sihite Josep Franklin , Kohda Takehisa
Published: May 2013

The purpose of this paper is to study the importance measures of power transformer system components. Importance measures analysis is a key part of the system reliability quantification process which are most effective towards safety improvement. This paper presented an application and results of the importance measures analysis of a power transformer system of GI Simangkuk switchyard in Indonesia by using Birnbaum importace measures, critically importance measure, and Fussel-Vessely importance measures. These method present the rank of the component importance measures quantitavily according to their contribution to system reliability and safety.
A Collaborative Approach for Multidisciplinary Systems Reliability Design and Optimization
Authors: Zhang Jun , Zhang Bing
Published: May 2013

In order to improve the efficiency and robustness of reliability-based multidisciplinary design optimization (RBMDO), a new collaborative strategy (named C-RBMDO) which integrates performance measure approach (PMA) and concurrent subspace optimization strategy (CSSO) is proposed. Both the mathematical model and optimization procedure are put forward. The traditional triple-level nested flowchart of RBMDO is decoupled with the sequential optimization and reliability assessment (SORA). The deterministic multidisciplinary design optimization and the multidisciplinary reliability analysis are executed by CSSO and PMA respectively. Finally, the proposed method is verified through the design example of gear transmission.
Fuzzy Synthetic Evaluation on Operation Conditions of Power Equipment Based on Optimized Weights
Authors: Zhang Qing Chao , Wei Chao , Zhang Xiao Tian , Jia Xin Hua
Published: May 2013

The need for economic and reliable operation of power equipment has lead to the search for effective methods for evaluating the condition of equipments. In this paper, fuzzy synthetic evaluation based on optimized weights is proposed to enhance the precision and flexibility. This method makes dual optimization on the weights of the factors which have vital influence on the accuracy of condition evaluation. At first, the initial weights are adjusted by entropy method effectively. Then variable weight model is introduced to make correction according to the deviation of actual data and normal state. At last, the fuzzy evaluation thought is utilized to value the ultimate operation condition of power equipment. A numerical example of a condenser in generator set is provided to illustrate the feasibility and effectiveness of the proposed method.
Bayesian Credible Limits of Failure Rate and its Applications in Reliability Engineering
Authors: Han Ming
Published: May 2013

This paper for product obeys exponential distribution, in the case of data with only one failure, one-sided Bayesian upper credible limit, two-sided Bayesian lower and upper credible limits of failure rate are proposed, moreover, the one-sided Bayesian lower credible limit, two-sided Bayesian lower and upper credible limits of the reliability are also provided. Finally, calculation performed on practical problems, show that the provided method is feasible and easy to perform in engineering.
A Study of Tracking System Using Multiple Emitter Towers
Authors: Sun Yi , Ma Tao , Han Chia Yung , Ross Joseph , Wee William
Published: May 2013

This paper presents a simple and accurate coordinate transformation method for extending the tracking space of the Intersense IS-900 spatial and motion tracking system using multiple pre-configured emitter towers to form the emitter constellation, but without resorting to the use of a surveyor machine. The proposed approach uses the differences of positional coordinate readings from each emitter tower among a set of commonly viewed spatial points to calculate the parameters needed to define the coordinate transformation. By applying this method, the tracking accuracy using the entire emitter constellation can be achieved by less than 0.5 inches error in most of the working space, and as low as 0.2 inches error in the frontal part of the working space.
Cooperative Positioning Based on Hybrid Information
Authors: Zeng Xiang Hui , Hou Hong Tao , Chang Qiang , Li Qun , Wang Wei Ping
Published: May 2013

A new localization method has been proposed to overcome the limitations of systems relying on GPS or other terrestrial infrastructure. This method fuses both pseudorange measurements from GNSS satellites and RSSI-based ranging measurements between peers of a wireless network, and uses improved collaborative subtree algorithm to partition the network. In each collaborative subtree, the nodes’ positions can be computed by using the least square algorithm based on Taylor series expansion-based. Simulation results showed that this method improves both availability and positioning accuracy.
Simulation of Gold Nanoparticles Aggravating MEMS Cantilever Optical Static Detection Biochip
Authors: Ge Yue Tao , Yin Xiao Tong
Published: May 2013

A kind of gene detection biochip model based on biological micro electro mechanical systems (BioMEMS) technology and micro optical electro mechanical systems (MOEMS) technology is designed and simulated. In order to detect whether there are nucleic acid components in the testing samples, the biochip in this study issues horizontal light by laser, then receives and reads the deformation signals of MEMS cantilever by optical detector. The MEMS optical reflecting system can amplify MEMS cantilever deformation signal 22 times by micro reflectors which are set on the side wall of the cantilever free end. In order to improve optical detection sensitivity, gold nanoparticles (GNPs) which are combined with hybridization information is taken to aggravate MEMS cantilever, and employ Au - S chemical bond of GNPs and dithiol HS(CH2)6SH to combine and fix DNA probe, and then employ target DNA which is marked with biotin to combine GNPs by Biotin - Streptavidin combining. The simulation results show that this biochip can detect biological samples fast, high throughput, low cost, high sensitivity and reliably.
The Research of Straight Pipe Viscometer
Authors: Zhang En Ping , Liu Bao Shuang , Liu Xi Min , Huang Ming Jian , Ren Hong Wei
Published: May 2013

A straight pipe viscometer is proposed, which consists of the measuring sub-system and the data-acquisition and signal processing sub-system. The measuring sub-system include straight pipe, pressure transmitter, Coriolis flow-meter and slurry bump, and the data-acquisition and signal processing sub-system include single-chip processor, A/D converter, digital display, serial output port, drive circuit and so on. The measuring principle and working process of the straight pipe viscometer are analyzed. The measurement data and results are given and compared with test results of rotary viscometer in the same test conditions. The measuring accuracy is 3% at 5-150mPas, and the online measurement of viscosity is implemented.
Design of Remote Test System for Fiber Bragg Grating Based on LabVIEW
Authors: Liu Chun Tong , Zhang Yang , He Zhen Xin , Li Hong Cai
Published: May 2013

As a new type of wavelength modulated fiber optic sensor, Fiber Bragg Grating (FBG) has been widely used in many fields. The majority of FBG demodulation device just detect the absolute wavelength, however, the change of wavelength is often concerned in actual use. For the purpose of realizing the FBG sensing system automated test, using the remote control port of the Q8384 spectrometer and the LabVIEW language to develop the remote automation testing system, and with the friendly interface of FBG sensing test interface. Realized the real-time monitoring and data storage capabilities by the processing of the collecting data and the FBG sensing remote test system is more practical.
A Method for the Manufacturing of Functionally Graded Material Parts
Authors: Muller Pierre , Hascoet Jean Yves , Mognol Pascal
Published: May 2013

Developments in additive manufacturing add possibilities to produce three-dimensional industrial parts. Nowadays, customized parts can be obtained in short period directly from digital data. One of major recent evolutions of additive manufacturing is the ability to produce functionally graded material (FGM) parts. These materials can be characterized by the variation in composition and structure gradually over the volume. The use of these materials is particularly attractive in fields such as aeronautical or biomedical where the multimaterial parts allow to modify locally mechanical, chemical, physical or biochemical properties. To move from the design to the fabrication of FGM parts, the necessary steps include representation of the part and determination of a manufacturing strategy to control the process.
Numerical Simulation of Springback during an Operation of V-Bending, Application to Titanium and Aluminum Sheets
Authors: Maati Ahmed , Pouzols Virginie , Tabourot Laurent , Balland Pascale , Ouakdi Elhadj H.
Published: May 2013

Generally, the sheet metal forming processes by plastic deformation are difficult to control owing to the multiple phenomena that can occur and disrupt the operation: the springback, the localization, the wrinkling, etc. The springback is a physico-mechanical phenomenon due to the return of the elastic energy stored during the loading phase, which leads to a change in the dimensions of the formed part. In fact, the improvement of the operation presents some complications because an important number of parameters that affect the springback and that can be accurately understood by the use of finite element analysis. In particular, the springback appears so prominent in the bending operations; this mode of deformation is the focus of this work which consists of two main parts: - Mechanical characterization of two alloys frequently used in aerospace manufacturing: aluminum 1050A and titanium T40 commercially available in the form of cold-rolled thin sheets. The conventional and rational curves are obtained by using a tensile test machine (Instron 50kN). - Finite element simulation of a V-bending operation of sheet metal with both materials. This study allows us to calibrate the numerical procedures that could be included in more complex operations.
Effect of Magnetic Field on the Growth of Aligned Carbon Nanotubes Using a Metal Free Arc Discharge Method and their Purification
Authors: Singhal Sonal , Singh Charanjit , Singla Preeti , Dharamvir Keya
Published: May 2013

Multiwalled Carbon Nanotubes (MWCNTs) have been synthesized using a low cost arc discharge method without using metal catalyst and vacuum devices. Effect of magnetic field on the synthesis of MWCNTs and their purity has been scrutinized. A magnetic field of 310 gauss has been found to give better purity of carbon nanotubes as confirmed by Raman spectroscopy. However, the removal of amorphous carbon from the surface of so prepared multiwalled carbon nanotubes has been achieved by different oxidizing conditions. It has been observed that the maximum removal of amorphous carbon found by using the strong oxidizing agent HNO3/H2O2. This strong oxidizing agent HNO3/H2O2removes most of the carbonaceous impurities leading to thermal stability of carbon nanotubes suggested by thermo gravimetric analysis. X-ray diffraction show the formation of carbon nanotubes having a peak indexed at (002) as the fingerprint for multiwalled carbon nanotubes. Fourier Transform Infrared (FTIR) spectra confirmed the formation of the multiwalled carbon nanotubes showing a characteristic stretching band at 1615 cm-1corresponding to the C=C bonds of tubular carbon. Raman spectroscopy revealed invaluable insights into the purification of nanotubes. G-band (1577 cm-1) corresponds to the confirmation of MWCNTs. Defect induced D-band (1355 cm-1) has been minimized after purifying CNTs with HNO3/H2O2for 24 hrs. Transmission Electron microscopic (TEM) studies indicate the formation of CNTs with controlled alignment having diameter in the range 2-8 nm.
Le public, le tact et les savoirs de contact
Authors: Le Marec Joëlle
Published: May 2013

Il existe bien sûr un écart entre ce qui est ressenti et partagé entre chercheurs à propos des situations de communication dans l’enquête, et les représentations du public qui sont construites grâce aux données recueillies dans ces enquêtes. Cet écart vient au moins pour partie de la perte des savoirs mobilisés pour le contact et la relation. Or la condition du public est définie par un mode de relation qui implique un effacement de soi. Ce type de position ne produit pas d’énoncés explicites exploitables en tant que données, mais plutôt la reconnaissance d’implicites difficiles à objectiver et rendus possibles par le tact. Nous proposons une problématisation de la condition du public à partir de cette position de retrait qui oblige au tact et permet de nourrir une relation sociale caractérisée par le respect et l’entretien d’un ensemble de potentialités qui caractérisent selon nous le fonctionnement institutionnel.
Creative Brisbane, Expérience touristique, villes créatives et esthétique de la transformation urbaine
Authors: Da Lage Émilie
Published: May 2013

À travers l’étude de l’expérience touristique de la ville de Brisbane en Australie, est posée la question de la créativité et des référents associés : comment est-elle médiée et diffractée par la presse, les guides touristiques, les institutions culturelles, voire certaines formes de l’espace public urbain ? En articulant approches sémiotique et pragmatique de l’expérience touristique, sont mises en lumière les modalités par lesquelles ces politiques se rendent visibles et sensibles dans l’espace public urbain et participent à produire une esthétique de la créativité, entendue au sens de relation sensible. Ainsi, le touriste est invité à faire l’expérience d’une ville « transformée » et anhistorique. Si l’aménagement urbain tend à évacuer la conflictualité de l’espace public, celle-ci peut refaire surface dans des formes « touristiques » traditionnelles, comme la visite guidée.
Psychometric Evaluation of a Six Dimension Scale of Nursing Performance and Student Nurse Stress Index Using an Objective Structured Clinical Examination - Modules for Asthma and Type 1 Diabetes.
Authors: Park Kyong Ok , Ahn Young Mee , Kang Na Rae , Lee Mi Jin , Sohn Min
Published: May 2013

PURPOSE: The study purposes were to describe the process of developing the Korean versions of the Six Dimension Scale of Nursing Performance (Six-D) and Student Nurse Stress Index (SNSI) and psychometric evaluation of the two measurements.METHODS: This was a methodology study using a descriptive cross-sectional design with 51 nursing students in 4th year of university. Internal consistency reliability was assessed using Cronbach alphas. Construct validity was determined by exploring correlations among Six-D, SNSI, objective structured clinical examination (OSCE), self-efficacy and grade point average (GPA).RESULTS: Internal consistency reliability of Six-D and SNSI was acceptable with Cronbach's alpha of .95 and .82.Correlation analysis to determine construct validity revealed that Six-D presented positive correlations with OSCE (r=.109~.272) and self-efficacy (r=.005~.161) and negative correlation with GPA (r=-.246~-.394), although all were not statistically significant. SNSI presented all negative correlations with OSCE (r= -.007~-.238), self-efficacy (r=-.246~-.394), and GPA (r=-.092~-.426) and were mostly statistically significant except OSCE.CONCLUSION: Six-D needs more evidence to confirm validity to predict observed clinical competency and theoretical relationships with self-efficacy and GPA. However, SNSI presented trends of expected relationships with relevant variables. Therefore, further research is recommended in testing validity of Six-D with other student populations.
Nursing Professionalism, Self-Efficacy and Nurse Parent Partnership in Pediatric Nurses.
Authors: Cho Eun Ju , Bang Kyung Sook
Published: May 2013

PURPOSE: To provide basic data to improve the practice environment of pediatric nurses by identifying their recognition of nursing professionalism and self-efficacy, and to examine the pediatric nurse parent partnership.METHODS: Participants in the study were 165 nurses with 6 months of work experience in a university children's hospital in Seoul. Data were collected using a self-report questionnaire. Research tools measuring nursing professionalism, self-efficacy, and pediatric nurse parent partnership were used. The collected data were analyzed using SPSS PASW statistics 19.0.RESULTS: There were statistically significant positive correlations for nursing professionalism and self-efficacy (r=.359, p<.001), nursing professionalism and the pediatric nurse parent partnership (r=.487, p<.001), and self-efficacy and the pediatric nurse parent partnership (r=.442, p<.001).According to the general characteristics of the participants, nurses who were married, practiced religion and had children tended to have higher nursing professionalism. Higher self-efficacy was exhibited by nurses who were older, married and raising children and the pediatric nurse parent partnership tended to have higher scores for nurses who practiced religion and worked in a general ward.CONCLUSION: The findings indicate that higher nursing professionalism and self-efficacy result in a better pediatric nurse parent partnership which should improve the practice environment of pediatric patients.
Geology and hydrothermal alteration of the Fab lake region, Northwest Territories
Authors: Potter E G , Montreuil J -F , Corriveau L , DeToni A
Published: May 2013

Detailed mapping of the Fab Lake magnetite-group iron oxide-copper-gold (IOCG) system has defined an alteration footprint extending almost 10 by 5 km, with the long axis trending in a southeastnorthwest direction. Within this area, field mapping identified seven
alteration assemblages: 1) high temperature albite and albite + amphibole ± magnetite [HT Na and HT Na-Ca-Fe]; 2) amphibole + magnetite ± apatite and amphibole + magnetite + K-feldspar [HT Ca-Fe and HT Ca-Fe-K]; 3) high temperature K-feldspar + magnetite ± hematite [HT K-Fe]; 4)
K-feldspar; 5) chlorite; 6) hematite; and 7) low temperature epidote + K-feldspar + quartz [LT Ca-Fe]. These alteration assemblages are expressed as incipient to pervasive alteration in the form of veins, hydrothermal breccias and replacement fronts in the host rocks exhibiting multiple
crosscutting and overprinting relationships. All of the historic Fab U-Cu-Fe mineral showings occur within zones characterized by intense, texture-destructive alteration comprising multiple episodes of high temperature albite/albite + amphibole + magnetite (Na and Na-Ca-Fe) and amphibole + magnetite
± apatite/amphibole + magnetite + K-feldspar (Ca-Fe and Ca-Fe-K) overprinted by K-feldspar + magnetite ± biotite (K-Fe) assemblages.
The conceptual alteration to brecciation and mineralization model is key to understanding the alteration assemblages documented in the Fab IOCG system. These assemblages record the build-up of a magnetite-group IOCG system: early high-temperature Na/Na-Ca-Fe and Ca-Fe/Ca-Fe-K alteration, overprinted
by high temperature K-Fe alterations and incipient to well-developed hydrothermal breccias. The alteration assemblages themselves and the zoning observed in outcrop provide true vectors towards mineralization, which based on the nature of the hydrothermal system, can be applied elsewhere in the
Great Bear magmatic zone and other prospective terranes. As field observations indicate that lower-temperature K-Fe alteration associated with hematite-group IOCG systems is only weakly developed, the Fab Lake region is most prospective for magnetite-group types of IOCG
mineralization.
‘No small counsel about self-control’: Enkrateia and the virtuous body as missional performance in 2 Clement
Authors: De Wet Chris L.
Published: May 2013

The question this article addresses is how the encratic, virtuous body in 2 Clement ‘speaks itself’ as a missional performance. It is in essence concerned with the discourses of corporeal virtuosity in 2 Clement. Firstly, the agon motif (2 Clem 7:1−6; 20:1−4) is discussed since it forms the basis metaphor for the understanding of ancient virtue-formation. Secondly, 2 Clement’s encratic technologies of soul and flesh as an extension and overamplification, respectively, of the body are examined (2 Clem 9:1−11). In the third instance, the proliferation of visible technologies of the body in 2 Clement are brought into perspective with special emphasis on these technologies as strategies of andromorphism, a crucial element in the understanding of virtue in antiquity (2 Clem 12:1−6). Fourthly, 2 Clement also links concepts of holiness and the pneumatic dimension of spirituality in its argumentation (2 Clem 14:1−5). This needs to be understood in the light of corporeal virtuosity. Finally, the concepts of suffering (2 Clem 19:3−4), martyrdom (2 Clem 5:1−7) and the apocalyptic anti-spectacle (2 Clem 17:1−7) are central in 2 Clement’s formulations of the missional performance and are therefore clarified. The intersection of these discourses is where the virtuous body in 2 Clement speaks itself as a missional performance. The study concludes by looking at the implications of the findings for understanding early Christian missionality.
Antonio: The other Jew in The Merchant of Venice
Authors: Finn S. M.
Published: May 2013

Antonio’s melancholy and his excessive hatred of Shylock are two puzzling aspects of The Merchant of Venice, most critics agreeing that the cause of the first is never revealed. However, the two (melancholy and mutual detestation) are closely linked. Antonio’s state of mind, his confusion, is brought on by his being (or, more accurately, having been) a Jew, too, who will always have to play the role of the born Christian. His original religious orientation is revealed throughout the play, showing him to be a converted Jew, or marrano (from the Spanish meaning “swine”), a type of person distrusted and abhorred by both “Old Christians” and Jews. Remarks throughout the play bear this out, and make it understandable why Shylock insists on Antonio’s heart, this being understood in Shakespeare’s day to be the centre of religious identity: he wishes to reclaim a Jewish soul.
Die klempatrone van Afrikaanse en Nederlandse simplekse - ’n vergelyking
Authors: Wissing D.
Published: May 2013

The stress patterns of Afrikaans and Dutch simplex words correspond to a large extent. However, a small percentage of words differ with regard to the placing of the main stress. The theoretical descriptions of this phenomenon in Afrikaans and Dutch are compared and the conclusion is reached that the Afrikaans description has a higher degree of descriptive and explanatory adequacy than its Dutch counterpart. This can be ascribed to a number of factors, some of which are dealt with in the article. It is furthermore demonstrated that the majority of shifts in stress patterns from Dutch to Afrikaans take place according to the main stress rule. This article indicates how these shifts provide strong support for the main stress rule for simplex words which forms the basis of the argument.