bluuebunny/crossref_metadata_2025 huggingface dataset:
The Application of Fuzzy FMEA in the Development of New Product Decision-Making - A Case Study of the Solar Module Industry
Authors: Chen Wen Chin , Chang Hui Pin
Published: January 2012

In a highly competitive economic society, in order to survive and maintain competitiveness, enterprises must constantly seek beneficial investment opportunities to keep a leading position in competition. The development of new products is the most difficult task in such a process. With solar module industry as the theme, this study explored the new product development decision-making issue and summarized five major key dimensions and 19 their subordinate criteria regarding new product development by literature review and expert interview. It employed the Interpretive Structural Model (ISM) to obtain the dimension-dimension and criterion-criterion dependence relationship, and used the Fuzzy Failure Mode and Effect Analysis (Fuzzy FMEA) to determine the top priority factor for assessment improvement in the new product development solutions of the enterprises.
An Improved Integrated Active Contour Model without Re-Initialization for Vector-Valued Images Segmentation
Authors: Zhao Ji , Shao Fu Qun , Zhao Ji , Zhang Xue Dong , Feng Chuang
Published: January 2012

In this paper, an improved variational formulation for active contours model is introduced to force level set function to become fast and stably close to signed distance function, which can completely eliminate the need of the costly re-initialization procedure. A restriction item that is a nonlinear heat equation with balanced diffusion rate is attached to variational Integrated Active Contour (IAC) model on the basis of analysis on regions and edges information from all channels of the valued-vector images, so that the level set evolution segmentation process becomes fast and stable. In addition, more efficient discretization method with spatial rotation-invariance gradient and divergence operator is proposed as numerical implementation scheme. Finally, the experiments on some images have demonstrated the efficiency, accuracy and robustness of the proposed method.
Comparing Study on Real Drawbead and Equivalent Drawbead Based on Finite Element Analysis
Authors: Qiu Xiao Gang , Huang Hao
Published: January 2012

The dynamic explicit finite element software DYNAFORM was used to simulate the real and equivalent drawbead model. Analyzed the influence of the blank hold force (BHF) and virtual velocity on blank’s deformation behavior after passing through drawbead, compared the results of the FE simulation. The simulation results were confirmed by experiments. The study shows that the equivalent drawbead model can’t simulate the blank’s behavior precisely when it passing the real drawbeads, the effect of BHF on real drawbead model is larger than equal drawbead model; the proper range of virtual velocity was obtained at the same time.
Finite Element Modal Analysis of the Frame of Corn Stubble-Collector
Authors: Tong Jin , Zeng Bai Gong , Chen Dong Hui , Quan Long Zhe , Zhang Shu Jun
Published: January 2012

In this paper, one kind of agriculture machines with picking and separating soil was designed to collect corn stubble. The core component of the machine is the frame of corn stubble-collector. The 3-D solid model of the frame of corn stubble-collector was designed using Pro/Engineer software. The first 10 natural frequencies and vibration modes of the frame were obtained by means of the finite element modal analysis in the ANSYS-Workbench software, and analyze the dynamic characteristics of the frame, which can be used to provide some theory basis for design and optimization of the frame.
Study on Modification of Micro-Crystal Muscovite by Using of Amino Silane
Authors: Liu Jing , Hu Zi Wen , Zhang Ming Gong
Published: January 2012

This study took orthogonal experimental design method to study the use of amino-silane modified microcrystalline muscovite process, and by viscosity, modified powder / PVC composite mechanical testing to characterize the effects of the modification. The results showed that: modified microcrystalline muscovite powder could improve processing rheological property of the powder / organic hybrid system remarkably, the processing rheology has a good effect of further improving filling amount of the powder in organic media, and allows powder Body / PVC composite impact strength, bending strength and tensile strength to get a certain degree of improvement.
Research on Emission Control of Marine Diesel Engine
Authors: Chen Guo Jin , Liu Zhong Min , Liu Ting Ting , Su Shao Hui , Yuan Guang Jie , Cao Yi Jiang
Published: January 2012

In response to the increasingly stringent diesel emission regulations, the paper analyzes the relationship of the low-speed marine diesel engine's emission with the combustion process, the fuel injection law, the exhaust recirculation and the SCR. Then the scheme of the fuel injection system with the high-pressure common rail for the low-speed diesel engine is proposed, and the test system for the diesel engine's emission performance is established. Through the experimental research, the optimization and matching technology for the diesel combustion process based on the emission control is analyzed, and the best injection law of the diesel engine is revealed under the different conditions. That will provide the technical support for the design and operating management of the diesel engine.
Numerical Simulation and Experiment Analysis of MIG Welding for Aluminum Alloy Extrusion
Authors: Luo Zheng Zhi , Pan Yi Su
Published: January 2012

Welding characteristics of MIG welding for aluminum alloy extrusions are studied. In this article, the aluminum alloy is EN AW-6005A. The welding heat source and the welding processing of aluminum alloy extrusions are discussed. A three dimensional finite element model has been developed to dynamically simulate the welding process. The investigations focus on the comparison the welding heat resource of simulation and section of the experiments parts. And the residual stress of numerical simulation and tests are compared. It’s help to optimize the MIG welding processes and improve the welding quality for aluminum alloy extrusion.
Assembly Model Based on Dynamic Transition Graph for Satellite General Assembly Process Planning
Authors: Sun Gang , Yu Jian Feng , Li Yuan
Published: January 2012

Beginning with the disassembly of the semi-finished modules, the general assembly process of satellites is quite different from that of other mechanical products. This kind of disassembly-reassembly process cannot be solved by the widely used cut-set theory that only deals with linear problems, thus an approach called Dynamic Transition Graph (DTG) is proposed to solve this nonlinear assembly sequence planning problem. By analyzing and verifying possible assembly statuses hierarchically through matrix operations, a DTG is produced on the basis of Liaison Graph, where the DTG includes all the geometric feasible assembly sequences for the general assembly of satellite. Finally, the effectiveness of this method is verified by an example.
Sensitivity Analysis of Input Parameters of Cartesian Serial-Parallel Manipulator
Authors: Luo Jian Guo , He Mao Yan
Published: January 2012

Exclusive solution can be found with the presupposition of the kinematical platform of Cartesian serial-parallel manipulator maintain the special shape, practical example carried out on the sensitivity of six input kinematical parameters to output spindle’s position and pose, different importance of input kinematical parameter of upper platform and lower platform to the configuration sensitivity of output spindle obtained, also the different effects of input parameters to the configuration of output spindle based on this type.
Analysis of Static Stability of Articulated Hydraulic Excavator with Two Degree of Freedom
Authors: Sun De Xin , Liu Xin Hui
Published: January 2012

In this paper, the geometric model of the hydraulic excavator with two degree of freedom was built, and then the dynamic model based on the multi-body dynamic software RecurDyn was built, and then the lateral stability and longitudinal stability of the hydraulic excavator on different gradients were analyzed, the result showed the tipping feather of the hydraulic excavator truly, and this paper provides guidance for choosing the hydraulic excavator’s working conditions.
An Image Restoration Algorithm Based on Improved RBF Neural Network
Authors: Zhao Xue Zhang , Liu Zhi Yuan , Xi Yun Jiang
Published: January 2012

In order to improve large amount of computing and slowly convergence speed, an improved radial basis function (RBF) neural network is raised in this paper. According to feature that the more recent data should be the more important in time-series data, it converts width value from original constant value to step function and accelerates the iterative convergence by using nearest neighbor clustering algorithm only at center, training weight by using gradient descent algorithm to correct network parameters and deleting input neurons adaptively. Network size is streamlined through network optimization training. Simulation shows that the restored image is good in visual and quantitative with faster image restoration processing. The algorithm based on improved RBF neural network has significantly improved the image restoration compared to other methods, but also well keeps image detail.
The Research on the Robot Vision System Based on the Target Clamping Technology
Authors: Wen Huai Xing , Wang Wen Sheng
Published: January 2012

Introduces the structure and the components of industrial robot vision system. Through designing the gripping point, the location of the clamping point can be planned out in the clamping operation, and then by visual recognition algorithms to calculate the coordinate figure of the clamping point relative to the camera. Then the calculated values would transmitted to computer, by whose control of the robot’s move can the operation of clamping on the target object be achieved.
Simulation Analysis of Metal Flow during Extending Extrusion Semisolid AA2017 Alloy
Authors: Guan Ren Guo , Zhao Zhan Yong , Lian Chao , Zhang Qiu Sheng , Dai Chun Guang , Liu Chun Ming
Published: January 2012

Extending extrusion process of semisolid AA2017 alloy was achieved. Metal flow during the process was analyzed by the finite element simulation. It was shown that alloy flow velocity decreases gradually from the center part to the sides of the mould, sometimes a transitional turbulence region appears in the middle. A smaller declining angle θ and without step d is suggested in the design mould. Alloy flow velocity at the center of the forming region decreases linearly with increases of the extending ratio s1/s0.
Nanaostructure-Dendrite Ti44Cu46Co4Zr6 Composite with Excellent Mechanical Properties
Authors: Zhang Xin Fang , Guo Xiao Qing , Gao Chang Yin , Jiang Zhi Qiang
Published: January 2012

New bulk nanostructure-dendrite Ti44Cu46Co4Zr6composite with excellent mechanical properties has been fabricated by using copper molder casting through systematic alloy design from binary Ti50Cu50. The results showed that the micro-scaledβ-Ti (M) solid solution embedding on the nanostructured matrix, which resulted in the excellent mechanical properties: high fracture strength (σf=2278 MPa) and good ductility (εp=9.01%) under quasi-static compression.
Preparation and Tribological Behavior of Carbon Fiber Reinforced Pantograph Slide Plate
Authors: Yuan Hua , Wang Cheng Guo , Lu Wen Bo , Zhang Shan
Published: January 2012

The carbon fiber (CF) reinforced pantograph sliding plates were fabricated by hot pressing with modified phenolic resin as bonder, and the continuous carbon fiber, copper and graphite respectively were reinforcing phase, electric conductive phase and lubricating phase, respectively. The impact toughness, electric resistance and wear resistance of the slide plate were tested. The structural characteristics of the pantograph sliding plates were investigated by scanning electron microscopy (SEM). The results show that the addition of CF mass fraction can increase impact strength and density; while resistivity has a lower trend; the volume abrasion loss and friction coefficient are decreased then increased dramatically. The fiber and resin interface adhesion is good for specimen impact cross section smooth. In addition, adhesive wear and abrasive wear are the main wear form of pantograph slide plates.
Application of Fractal Theory in Electro-Discharge Dressing Diamond Grinding Wheel
Authors: Cai Lan Rong , Li Yang , Li Min
Published: January 2012

Electrical discharge dressing and truing of diamond grinding wheel is a non-contact and non-traditional truing and dressing technology. In orde to help selecting optimized parameters under certain conditions such as peak current,etc.Fractal theory is application to set a electrical dischrge model .In this model,the fractal dimension ( ) is proportionately related to peak current( ) and pulse duration ( ).The actual dressing experiment was conducted to demonstrate the simulation model. There is a relationship between fractal dimension ( ) and the surface morphology of diamond grinding wheel.
Synthesis of a Novel Double Crosslinking Amphoteric Cassava Starch
Authors: Lv Hu Qiang , Li He Ping , Bai Guo Wei , Ou Hui , Yang Yong Zhe , Zhang Yao
Published: January 2012

The grafted copolymerization of dimethyldiallylammoniumchloride (DMDAAC) and N,N'-methylene bisacrylamide onto cassava starch was investigated with water as solvent and ammonium persulfate-sodium sulfite as redox initiator. In above conditions, double crosslinking amphoteric cassava starch was synthetized by using sodium hydroxide as catalyst, epichlorohydrin as crosslinking agent and chloroacetic acid as etherification agent. The DS and DC could reach to 0.108 and 0.391 respectively under the following conditions: m(AGU) : m(DMDAAC)=1:1.5, the initiator mass fraction 3.5% (vs. dry starch), grafted polymerization temperature 45°C and time for 5 h, etherification temperature 50°C and time for 5 h, n(AUG):n(ClCH2COOH)=1:1 and n(AUG):n(NaOH)=1:1.5. The product was characterized by infrared spectrum (FTIR), scanning electron microscopy (SEM) and X-ray diffraction spectrum (XRD). The results indicate that the cassava starch is modified successfully, and the final product is a novel double crosslinking amphoteric cassava starch.
Simulation Study on the Fluid-Solid Coupled Heat Transfer of Cylinder Head
Authors: Zhang Ming Yuan , Li Lin , Yan Ming
Published: January 2012

The 3D model of cylinder head and cooling water channel is built in the Pro / E software, the channel model is trimmed and divided to get the grid correspond with the computational requirements in the ICEM CFD, the fluid solving parameters and boundary conditions and other related information is set in the CFX software, the solid domain and the coupling parameter is set in the ANSYS MFX module, then the temperature field of cylinder head and waterways, wall convection heat transfer coefficient and other information is got. The overall design’s rationality can be known from the temperature field, but between two outlets of the cylinder head, the highest temperature of the cooling water is 363K, it can be known from the flow of the cooling water that this part is not easy to be cooled, further improvement of the cylinder head structure should be made to improve the cooling effect of cylinder head.
An Analysis of the Evolution in Internet of Things Industry Based on Industry Life Cycle Theory
Authors: Qiao Hai Shu , Wang Gui Liang
Published: January 2012

As is with general industries, Internet of Things industry also follows life cycle theory in the long run. However, in the short term, its high-tech industrial property will bring with it an inevitable outbreak growth at growth stage. The internal mechanism of explosive growth is that the whole networking industry chain achieves linkage development between supply and demand. Currently, Internet of Things industry in China faces a "quake lakes dilemma", which makes the linkage unrealized. Therefore, to get out of the "quake lakes dilemma" and further accelerate the evolution of Internet of Things, it is vital to make major breakthroughs in technologies, standards bottlenecks and remove cost barriers.
Synthesis and Characterization of LiFePO4 Prepared by Sol-Gel Technique
Authors: Wang Heng , Ruan Yan Li , Shi Zhe Chi
Published: January 2012

LiFePO4 material was synthesized at 650°C in an N2 atmosphere using a sol-gel method. This material showed a well developed XRD pattern (orthorhombic structure, Pnma) without peaks at 2θ=41°, indicating the absence of FeP or metallic Fe2P impurities. The Li/LiFePO4 cell showed a high initial discharge capacity of more than 140mAh/g and no capacity decrease until the 50th cycle (>99.0%).
Study on Influence and Evaluation of Coal Mining on Envionment
Authors: Zhang Jia Yong , Gong Xue Min , Guo Li Wen
Published: January 2012

Through the synthetically analysis of the characteristics of coal mining and the environment quality of the mining area, the environment quality evaluation index system is formed: water and soil environment quality are the principal layer, the influence factors are measure layer. The evaluation degree of every factor is defined by fuzzy synthesis evaluation method and the environment quality level and the problem urgently to result are found, which provides theory support for environmental protection and green development.
Development of a Quality Assurance Framework for Research and Development
Authors: Geum Young Jung , Kim Moon Soo , Yoon Jae Wook
Published: January 2012

The body of literature has been almost unanimous for the needs for quality assurance for R&D. Despite the needs, quality assurance in R&D has been rarely discussed due to the difficulties of defining, measuring, and managing R&D quality. Even some guidelines or standards have been suggested to deal with quality management, there is a lack of research dealing with the concrete framework for quality assurance for R&D. In response, this paper aims to develop a framework for quality assurance for R&D: R&DQASS. The conceptual framework of R&DQASS consists of four dimensions: organizational level management, project level management, process level management, and outcome level management. The role, characteristics, and detailed activities of each dimension are explained in detail. Following on the conceptual framework of R&DQASS, this paper also provides the QA procedures which should be conducted prior to, during, and after the R&D projects. The suggested framework is expected to provide the meaningful implication for the QA managers by providing the role and characteristics of key dimensions which are critical to the quality assurance for R&D.
A Mathematical Model for Predicting Cutting Force in Rotary Ultrasonic Drilling
Authors: Zhang Cheng Long , Feng Ping Fa , Wu Zhi Jun , Yu Ding Wen
Published: January 2012

Rotary ultrasonic machining is a hybrid machining process that combines diamond grinding and ultrasonic machining. The mathematical predictive material removal rate models have been developed in rotary ultrasonic machining with a constant pressure. However, there is no report on mathematical predictive cutting force model in rotary ultrasonic drilling at a constant feedrate presently. Since cutting force can not only reflect the processing state, but also affect the machined surface quality, it is necessary to develop a mathematical model for predicting cutting force which can forecast the machining results. This paper presents a mathematical model to predict the cutting force in rotary ultrasonic machining. On the basis of this model, the relations between cutting force and controllable machining parameters are researched by numerical computation method. This paper also researches the influences of spindle speed and feedrate on cutting force by experiments. The results observed through the experiments agree well with the relations generated from the mathematical model, which verify the developed model.
Research and Implementation of Dynamic Synchronous Visual Teaching System for Data Structure Algorithms
Authors: Huang Tong Cheng , Liu Xin Liang
Published: January 2012

Data Structure is the specialized core course for students majoring in Information Science. It is very important for students to study succesor courses and enhance their programming level. This paper presented the authors’ actual achievement in research and practice of dynamic synchronous visual teaching system for Data Structure algorithms.
A Study on the Improved Harmonic Current Detecting Method Based on ip—iqCalculating Modes
Authors: Xu Bo Qiang , Li Guo Bin
Published: January 2012

With the development of power system, the rapid and accurate detection of harmonic and reactive currents is premise of reactive power compensation and harmonic suppression. With MATLAB software, a research on simulation of harmonic detection and improvement method based on instantaneous reactive power theory is carried out. The result indicates that the harmonic detection improvement method of ¡P—¡qbased on instantaneous reactive power theory have a faster response time and better real-time.
Experimental Investigation on Manufacturing and Environmental Aspects of Electrical Discharge Machining Process Using Graphite Electrode
Authors: Thiyagarajan S. , Sivapirakasam S.P. , Mathew Jose , Surianarayanan M.
Published: January 2012

This paper presents a study on the influence of process parameters on the manufacturing and environmental aspects of die sinking electrical discharge machining process using graphite as the tool electrode. This investigation included peak current, pulse duration, dielectric level and flushing pressure as the input parameters and aerosol emission rate, material removal rate and tool wear rate as the output parameters. The experiments were planned according to the Taguchi L9 orthogonal array. The effects of process parameters on the output responses were analyzed using main effect plots. Peak current was the most significant process parameter. A discussion on the optimization of process parameters is also presented in this paper.
Research and Implementation of Educational Management Information System
Authors: Tao Hong Jian
Published: January 2012

Through the analysis on the status of the existing higher education management, this paper proposes an implementation scheme of higher education management information system. This scheme adopts the application architecture with combination of B/S and C/S, thus having strong versatility, simple operation, and easy maintenance features, and then has a strong practical value.
Winged Aerostat Systems for Better Station Keeping for Aerial Surveillance
Authors: Kanoria Akshay A. , Pant Rajkumar S.
Published: January 2012

An aerostat is a tethered balloon with an aerodynamically shaped envelope containing a lighter-than-air gas that generates bulk of the lifting force. Aerostats are used extensively as an aerial platform for many scientific and commercial applications. Conventional aerostats envelopes have an ellipsoidal shape, due to which they suffer from a large amount of horizontal displacement (called blowby) due to the ambient winds. If the drag force acting on aerostat is high, the resulting blowbyis higher and a longer tether is required to maintain the specified operating altitude; this results in lower payload capacity. Recent studies have shown that winged aerostats (which have an envelope with airfoil cross-section) can reduce blowbydue to a much higher lift/drag ratio. This paper presents a comparative analysis of the operational effectiveness of a winged and conventional aerostat for scientific data gathering in lower Himalayas at various ambient wind speeds. The winged aerostat is seen to be much smaller in size, and has a much lower reduction in operating altitude due to blowby. The paper also describes the design of a prototype winged aerostat currently under development.
Effect of Destroying High Pulsed Electric Field to Ascaris Suum Eggs
Authors: Zhang Ling , Teng Zhao Sheng , Li Hua Zhong , Zhang Qian , Wu Shuang Shuang
Published: January 2012

In order to investigate the effect of high power square-wave pulsed electric field (HPEF) on parasite eggs, Ascaris suum eggs are selected as an example. By changing the voltage, frequency, acting time of the pulse, electrode shape, and living environment of Ascaris suum eggs, this paper discusses the relationship between parameters of HPEF and the effect of destroying Ascaris suum eggs. Then the direct smear for microscopic examination is adopted for counting the death rate of Ascaris suum eggs. The research result shows that with fixed experiment conditions the death rate of Ascaris suum eggs increases with the increase of electric field voltage and acting frequency. Furthermore, the acting time has weak effect to the death rate, and the death rate with pin-pin electrode is the highest. When pulsed voltage is fixed and higher than 60kV with pin-pin electrode, the death rate is always higher than 80%. However, the death rate in pin-board electrode is inconsistent. The experiment results indicate that HPEF has effective impact on Ascaris suum eggs while feasible processing parameters are selected, so it can be used in destroying Ascaris suum eggs and some other parasite eggs.
Study on the Distributed Real-Time and Embedded System Middleware Based on the DDS
Authors: Ren Hao Li , Jiao Yan Ping
Published: January 2012

This paper study on the distributed real-time and embedded system middleware. Presents a comprehensive overview of the Data Distribution Service standard (DDS) and describes its benefits for developing Distributed System applications. DDS is a platform-independent standard released by the Object Management Group (OMG) for data-centric publish-subscribe systems. The standard is particularly designed for real-time systems that need to control timing and memory resources, have low latency and high robustness requirements. To illustrate the benefits of DDS for precision assembly an example application is presented.
Anti-Felting Property of Wool Fabric Treated by Excilamp and Enzyme
Authors: Zhang Qian Jie , Yan Ke Lu
Published: January 2012

In this paper, a shrinkproofing treatment of wool fabrics was carried out by excilamp combined with enzyme. Shrinkproofing properties of the treated fabrics were evaluated by measuring the values of directional friction effect (DFE), felting shrinkage and weight loss. The results showed that felting shrinkage of the treated wool fabrics could achieve the machine washability standard (ISO 6330 and IWS TM 31) with low fiber damage. Surface morphology and chemical composition of the treated fabrics were observed and analyzed by SEM and FTIR-ATR. This treatment was compared with low-temperature oxidation combined with enzyme method (ARS Process).
Dyes & Fluorochromes as Imaging Agents in Biology and Medicine - New Opportunities for Dyestuff and Textile Chemists
Authors: Horobin Richard W.
Published: January 2012

Dyes and fluorochromes are used in biology and medicine to generate informative microscopic and macroscopic images. This means that the presence, location, biological structure, chemical content and physiological function of cells, tissues and whole creatures can be investigated. A wide range of dyes, both textile and functional, are used in this way. It is suggested that the various groups of stakeholders involved in this approach-end-users in biomedicine; synthesizers, manufacturers & vendors of dyes; and regulators and standardizers-have much to gain by becoming significantly better connected with each other. Broadly speaking, textile dyers use colorants to make socks and shirts and ties more visually attractive, which is not an objective of professional concern to biologists or clinicians. Biomedical applications of colorants are commonly aimed at obtaining information about living systems, using imaging technologies. There are also non-imaging dye applications in which they are used as drugs or analytical reagents, but these are not considered here. Note: below, “dyes” often implies fluorochromes, whilst “biomedicine” is short for biology and medicine.
Degradation Kinetics of Reactive Brilliant Red X-3B Dye by UV/Mn2+/H2O2/Micro-Aeration
Authors: Cai Ying Jie , Yang Xiao Jun , Xia Dong Sheng , Zeng Qing Fu
Published: January 2012

Abstract. Degradation of reactive brilliant red X-3B (X-3B) by a UV/Mn2+/H2O2/micro- aeration method was investigated. The influencing factors of degradation of X-3B including UV irradiation, aeration, pH value, H2O2 concentration and X-3B concentration were examined. The results show that X-3B was effectively degraded by the UV/Mn2+/H2O2/micro-aeration method. The degradation rate of X-3B was obtained from weighted linear least squares analysis of the experimental data, and accorded with the pseudo-first order kinetics equation.
The Effect of High-Voltage Electrostatic Field on the Water Performance
Authors: Wang Qing , Min Jie , Tian Jia
Published: January 2012

Water treated by external electric field with different field intensity. The absorbency of water, the changes of dyes solubility, the effect of treatment time and the changes of wool swelling were studied. The results showed that electric field treatments can alter the water physical properties to various degrees. The absorbance of water increased with increasing electric field intensity. The swelling ratio indicated the ability of solvent to penetrate the wool fibers and to swell them.
Effect of Soaping Process on Crimp Properties of Optim Wool
Authors: Quan Qiong Ying , Li Zhi Gang
Published: January 2012

Optim fiber is a kind of modified wool fiber by physical stretching of fine wool fiber, which changes the crimp ratio of the original wool. The effect of the soaping parameters, such as caustic concentration, temperature, treating time on Optim fiber crimp ratio was studied. The results showed that under the same caustic concentration, the crimp ratio is distinctly increased along with the temperature increase when the temperature is under 75 oC. However, when the temperature was higher than 75 oC, the crimp ratio started to reduce fast. Under the same soaping temperature, the caustic concentration change did not have the obvious effect on the crimp ratio change. When the temperature was above 80 oC, the crimp ratio reduced as a whole along with the caustic concentration. The change of the curl ratio was not obvious at the same caustic concentration within 20 min. However, the curl ratio reduced slowly with increasing the soaping time. At the same soaping time, the curl ratio of fibers reduced with increasing concentration of soaping. It could provide some technical reference for dyeing of optim fiber.
Numerical Simulation and Optimization of the YKK355-4 Motor Shaft Welding Structure
Authors: Shi Yi Xin , Shen Yu Long , Pan Wen Hui , Liu Ji Pu
Published: January 2012

Motor shaft is an important component of the electromotor. In the process of motor shaft producing, the motor shaft and the rib plates are usually connected by welding. While in actual use, the structure of the motor shaft may often fracture as a result of the welding, in order to solve the above problem, the structure of YKK355-4 motor shaft and rib plates are modeled and analyzed by using finite element method, and then an optimization on the welding process and shaft structure is performed. By comparison, it is safe to conclude that the welding on both sides at the same time can reduce obviously the welding residual stress and welding deformation and the overall welding quality can be effectively enhanced under the adoption of a 3mm chamfer transition in the connection.
Study on Influence of Freeze-Thaw Cycles on the Physical-Mechanical Properties of Loess
Authors: Bi Gui Quan
Published: January 2012

Loess foundations in seasonally frozen soil region are subject to severe effect of freeze-thaw cycles. This often results in water redistribution and structure weakening. So it is very important to study the physical-mechanical properties of loess under freeze-thaw cycles. In this paper, systematic study was carried out using freeze-thaw cycle machine. The impacts of freeze-thaw cycles on the physical-mechanical properties of loess including deformation, water distribution and dry density under the condition of filling water to loess samples were investigated. The results proved that the freeze-thaw cycles can increase the water content gradually from the bottom to the top in the loess samples under water supplied condition. The water content gradient reaches maximum at the freeze-thaw interface. The loess samples deform sharply at the early stage of the freeze-thaw cycles and then reach a stable status. The freeze-thaw cycles decrease the dry density of the loess samples gradually. The dry density at the top is lower than that at the bottom, due to more severe freeze-thaw effect at the top of the samples.
A Novel Method to Realize the Many-to-Many Mapping in Lifting Appliances' Safety Evaluation
Authors: Rao Hong , Dong Xiao Rui , Gong Hong Wu
Published: January 2012

A code control mechanism (CCM) was proposed in this paper to solve the complex many-to-many mapping problem in lifting appliances safety evaluation, in which, the complicated many-to-many constraints relation is replaced by the character string. The novel method can reduce the redundant data tables and improve the system efficiency. CCM can be extended to realize the object-typed many-to-many mapping in other area.
The Building of Home Automation Electricity Distribution System Based on PLC
Authors: Zhang Ai Rong , Zhang Jin Lan
Published: January 2012

Home automation is a common area of interest the researchers and engineers work, of course, the consumer. Today, intelligent household system is commonly found in many homes in many countries around the world. This system not only provides a high level of control household appliances, also should try to reduce the waste electricity. Electric power communication (PLC) is a kind of common technology used in home automation system, household electric wire reuse for communication. But the current system puts forward the shortcomings of the need to improve. We introduced the design a new generation of intelligent household system that will give consumers with a huge characteristics and businessman. The main characteristics of the system are based on the Internet control, logging-facilities.
The Study on Electric Power System Based on Swarm Intelligence
Authors: Xu Ze Sheng , Ma Zhi Feng , Di Xin Wen , Luo Tao , Guo Hong Yun , Niu Bao Chen
Published: January 2012

In this paper, we introduce the swarm intelligence computation and its applications in power system. Because swarm intelligence does not need any precondition of centralized control and global model, it is very suitable to solve large scale power system nonlinear optimization problems which are hard to establish effective formalized models and difficult to be solved by traditional methods. In order to apply swarm intelligence better in power system, we propose two central research directions in the future: (1) The mathematical basis of swarm intelligence is unsubstantial and it lacks profound and pervasive theoretical analysis, so we must analysis its convergence and selection of parameters, especially the parameter selection of large scale power system optimization problems. (2) Because swarm intelligence is internally parallel, we should realize it based on the parallel computation theory. This work will also be helpful for the real-time need of power system.
Study of an Inorganic Ion Exchanger Mg2Ti1.25(PO4)3
Authors: Li Heng
Published: January 2012

The ion-exchanger Mg2Ti1.25(PO4)3 of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Mg2Ti1.25(PO4)3 was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Mg2Ti1.25(PO4)3) has the saturation capacity of exchange for Li+ higher than those for other alkali ions, the saturation capacity of exchange for Li+ reaches to 6.0mmol/g, MgTi-750(H) has a higher selectivity of ion exchange for Li+ than for other alkali ions. These result show MgTi-750 (H) has better memory and selectivity of ion exchange, and higher capacity of ion exchange for Li+. It is a kind of prospective ionic sieve for Li+.
Effect of Different Ignition Methods on Combustion Characteristics of a Turbocharging Lean Burn LPG Engine
Authors: Qu Da Wei , Li Jun , Gao Ying , Zhou Dong Qing , Fan Lu Yan , Tian Ye
Published: January 2012

A turbocharging lean burn LPG engine combustion model is set up by using three-dimensional simulation software. And the numerical simulation of the engine working process is done. Based on the model validation, the effect of the engine working process is calculated and analyzed by comparing with different ignition models (single spark ignition and dual spark ignition) and the simulation results are validated by experiments. The results show that: dual spark ignition (DSI) model as compared to single spark ignition (SSI) model can reduce flame propagation distance, form the stronger swirl rapidly, accelerate the flame propagation speed, reduce knock phenomena, reduce the emission temperature and improve the engine efficiency. Therefore, the engine has better power performance and fuel economy.
The Study of Residual Stresses in High-Speed Milling of Titanium Alloy TC11
Authors: Yao Chang Feng , Yang Zhen Chao , Huang Xin Chun , Ren Jun Xue , Zhang Ding Hua
Published: January 2012

In order to provide experimental evidence for optimizing high-speed milling parameters and controlling surface integrity, the effects of cooling conditions, tool rake angle and milling parameters on machined surface residual stresses were investigated in high-speed milling titanium alloy TC11. The residual stresses were measured by XStress3000 X-ray stress analyzer, and three points were tested on each workpiece surface, then take average. The milling parameters were optimized based on fatigue performance. The results show that the emulsion cooling get the highest surface residual compressive stress and the dry cutting get the lowest residual compressive stress. With the increasing of cutting tool rake angle, surface residual compressive stresses increase. The most effect on the residual stresses of surface is milling width, next are feed per tooth and milling depth, and the last is milling speed. In the experimental range, the optimized high-speed milling parameters are: vc=377m/min, fz=0.03mm/z, ap=0.2mm, ae=7.5mm.
Primary Study on Crop Wet Biomass Measuring with Dielectric Spectroscopy
Authors: Zhang Hua , Wu Bai Yu , Hou Rui Feng , Zhu Da Zhou , Pan Da Yu , Bi Kun , Wang Cheng
Published: January 2012

Crop wet biomass measuring with dielectric spectroscopy is a non-destructive method to quickly and accurately estimate plant biomass in situ. It optimizes the management of agronomists. An electrostatic free-space system was designed and tested to estimate crop wet biomass in situ. It acts as a parallel plate capacitor. The appropriate size of plate of the system is determined through Finite element analysis (FEA). Water is used to make the exclusion of interference at the earlier stage of the experiment, and Wheat is the experiment material. Results from the measuring system showed The Susceptance through the system was strongly correlated with wet biomass. The coefficient of determination (r2) is greater than 0.9.
Interface between LabVIEW and FANUC Robot
Authors: Zhang Hai Ming , Yang Xi Chen
Published: January 2012

FANUC industrial robots are used more and more widely. However, robots’ communicant protocol and interface are different and unopened. Robot interface technology has become an important factor. Controlling robot movement via interfere has become an important issue in recent years.NI LabVIEW has powerful data acquisition and measurement ability and friendly graphics programming interface. It has the most percentages in the field of automatic measurement. The interface between PC and FANUC industrial robot is studied. A serial of sub VI are developed based on LabVIEW, including connecting robot with PC, initializing robot interface, reading and changing system variables, reading and changing position variables, displaying current position, controlling robot programs and so on. This paper describes the hardware and software components of the system, and the typical communicant and control module between PC and FANUC robot developed by LabVIEW. After testing, the function of every module can be achieved and performs well.
Application Research of APDL on Contrarotating Propeller Parametric Modeling
Authors: Gao Jie , Li Nan
Published: January 2012

In this paper, the approach for the contrarotating propeller parametrization modelling is provided based on the APDL language. Contrarotating propeller's parametrization modelling have several advantageous for the designers. The designers only need input some parameters, then the contrarotating propellers model could be produced automatically. Finally, this models are input into ANSYS to carry on automatically the strength analysis, and input into FLUENT to carry on the fluid analysis. It has saved the analysis efficience and has the very useful values.
The Research on the Electrical Properties Change in Extrusion Molding of Resin Matrix Multi-Walled Carbon Nano Tubes Composites
Authors: Sun Ling , Chen Mao Shun , Zheng Xian Shu
Published: January 2012

Prepare poly butylene terephthalate (PBT)/multi-walled carbon nanotubes (MWNTs) composites through the method of melt blending. Then use low-cost single screw extruder to conduct experimental research and analysis on the extrusion test sample of PBT/MWNTs composites of different proportions under the conditions of changing the extrusion temperature, rate, cooling mode and so on. As a result, the process parameters of the better extrusion temperature, critical extrusion rate, and high-gloss molding etc. to reinforce the electrical properties of composites under low-cost experiment condition have been obtained. The experiment results also indicate that with the increasing of the MWNTs content, the surface resistivity of the composites shows a declining trend.
Dynamic Prediction Model for Rolling Bearing Friction Torque Using Grey Bootstrap Fusion Method and Chaos Theory
Authors: Xia Xin Tao , Lv Tao Mei
Published: January 2012

Synthesizing the grey bootstrap fusion method and the five chaos forecasting methods (viz., the adding-weight zero-rank local-region method, the one-rank local-region method, the adding-weight one-rank local-region method, the improved adding-weight one-rank local-region method, and the maximum Lyapunov exponent method), a dynamic prediction model is proposed to calculate the predicted true value and the predicted interval of a chaotic time series under the condition of unknown probability distributions and trends. At the same time, the five forecasting values are acquired with the help of the five chaos forecasting methods, respectively, and the five forecasting values are fused to deduce the predicted true value and the predicted interval by means of the grey bootstrap fusion method. As time goes on, a series of the predicted true value and the predicted interval is obtained dynamically. Experimental investigation of the rolling bearing friction torque shows that using the grey bootstrap fusion method, the predicted true value and the measured values have an identical trend only with a small error, the predicted interval is acquired along with a high reliability, and the dynamic prediction of the rolling bearing friction torque as a chaotic time series is made without any prior knowledge of probability distributions and trends.
Surfactant Protein A Integrates Activation Signal Strength To Differentially Modulate T Cell Proliferation
Authors: Mukherjee Sambuddho , Giamberardino Charles , Thomas Joseph , Evans Kathy , Goto Hisatsugu , Ledford Julie G. , Hsia Bethany , Pastva Amy M. , Wright Jo Rae
Published: January 2012

Pulmonary surfactant lipoproteins lower the surface tension at the alveolar–airway interface of the lung and participate in host defense. Previous studies reported that surfactant protein A (SP-A) inhibits lymphocyte proliferation. We hypothesized that SP-A–mediated modulation of T cell activation depends upon the strength, duration, and type of lymphocyte activating signals. Modulation of T cell signal strength imparted by different activating agents ex vivo and in vivo in different mouse models and in vitro with human T cells shows a strong correlation between strength of signal (SoS) and functional effects of SP-A interactions. T cell proliferation is enhanced in the presence of SP-A at low SoS imparted by exogenous mitogens, specific Abs, APCs, or in homeostatic proliferation. Proliferation is inhibited at higher SoS imparted by different doses of the same T cell mitogens or indirect stimuli such as LPS. Importantly, reconstitution with exogenous SP-A into the lungs of SP-A−/− mice stimulated with a strong signal also resulted in suppression of T cell proliferation while elevating baseline proliferation in unstimulated T cells. These signal strength and SP-A–dependent effects are mediated by changes in intracellular Ca2+ levels over time, involving extrinsic Ca2+-activated channels late during activation. These effects are intrinsic to the global T cell population and are manifested in vivo in naive as well as memory phenotype T cells. Thus, SP-A appears to integrate signal thresholds to control T cell proliferation.
Development and Function of Murine B Cells Lacking RANK
Authors: Perlot Thomas , Penninger Josef M.
Published: January 2012

RANKL–RANK signaling regulates numerous physiologic processes such as bone remodeling, lymph node organogenesis, central thermoregulation, and formation of a lactating mammary gland in pregnancy. Recently, a receptor activator of NF-κB ligand (RANKL)-blocking Ab has been approved for human use in potentially millions of osteoporosis and cancer patients. However, germline deficiencies in RANKL or receptor activator of NF-κB (RANK) also lead to strong B cell defects in mice and human patients, suggesting that RANKL–RANK inhibition could interfere with B cell physiology and thereby trigger immunologic side-effects. To address this key question—that is, whether RANKL–RANK signaling affects B cell physiology directly or the observed defects are secondary because of the severe osteopetrosis—we generated B cell-specific RANK knockout mice. We show that B cells deficient for RANK undergo normal development and do not show any obvious defects in Ab secretion, class switch recombination, or somatic hypermutation. Our data indicate that ablation of the RANKL–RANK pathway has no direct adverse effect on B cell physiology.