bluuebunny/crossref_metadata_2025 huggingface dataset:
Construction and Performance of Pervious Concrete Overlay at Minnesota Road Research Project
Authors: Schaefer Vernon R. , Kevern John T. , Izevbekhai Bernard , Wang Kejin , Cutler Heath E. , Wiegand Paul
Published: November 2010

Portland cement pervious concrete (PCPC) has shown great potential to reduce roadway noise, improve splash and spray, and improve friction as a surface wearing course. A study is under way at Iowa State University and the National Concrete Pavement Technology Center to develop mix designs and procedures for PCPC overlays for highway applications. A report is produced on the construction and performance of a PCPC overlay constructed at the Minnesota Road Research Project low-volume roadway test facility to determine the effectiveness of pervious concrete as an overlay. Issues related to construction of the overlay are described, as are results of field tests to characterize the condition of the pavement 7 months following construction, to determine flow characteristics of the overlay, and to characterize the tire–pavement noise of the overlay. Results of these studies show that effective PCPC overlays can be designed for wearing course applications.
Effects of Soil Clogging and Water Saturation on Freeze–Thaw Durability of Pervious Concrete
Authors: Guthrie W. Spencer , DeMille Carson B. , Eggett Dennis L.
Published: November 2010

The objective of this research was to evaluate the resistance of pervious concrete to degradation during freeze–thaw cycling under different soil clogging and water saturation conditions. Laboratory testing of freeze–thaw durability involved two levels of soil clogging and two water saturation conditions in a full-factorial experimental design, and field testing involved measurements of stiffness and compressive strength on clogged and unclogged locations of an experimental pervious concrete slab placed in northern Utah. Both experimental factors, together with their interaction, were determined to be statistically significant in this research. Specimens that were clogged with soil or completely submerged in water, or both, were damaged at a significantly faster rate than those specimens that remained unclogged and unsaturated. The average number of freeze–thaw cycles to failure was 93 for clogged specimens compared with 180 for unclogged specimens, and 80 for saturated specimens compared with 193 for unsaturated specimens. A comparison of in situ modulus values, core modulus values, and core compressive strengths associated with clogged locations and unclogged locations in the experimental slab indicated no significant differences in structural properties in the clogged and unclogged locations. That was likely attributable to the fact that only the upper 1 to 2 in. of pervious concrete in clogged locations was filled with debris. The remaining depth of the slab seemed to be free draining. These research findings emphasize the importance of ensuring that pervious concrete remains free of debris and well drained during service in cold regions.
Assessing the Effect of Infrastructure and Service Attributes on Realization of Motorways of the Sea
Authors: Tsamboulas D. , Moraiti P. , Vlahogianni E.
Published: November 2010

Motorways of the sea (MoS) is regarded as the integrated modal transportation supply chain that offers a realistic prospect for a substantial modal shift from road. It is also considered to contribute to improving competitiveness, reducing environmental damage, and enhancing regional cohesion. Research on MoS services has only recently started to develop. This paper proposes a probabilistic methodological framework based on Bayesian networks to identify and quantify the effect of different attributes on transportation supply chains that could foster the shift from traditional intermodal services to an integrated MoS process. Aspects such as operational characteristics of ports, hinterland operations, security, and administrative and customs procedures, as well as maritime and rail services, are jointly assessed. The proposed methodology identifies and prioritizes those attributes that most likely will lead to improving the operational state of an intermodal supply chain, thus rendering it an MoS chain. This could be a useful tool for decision makers to obtain the necessary information on a macro scale as they decide whether to proceed with needed investments for those intermodal links selected as potential MoS. Therefore, the model can be integrated into a decision-making framework as a tool by which necessary investments or service improvements or both could be identified.
Effects of posttraumatic carbamylated erythropoietin therapy on reducing lesion volume and hippocampal cell loss, enhancing angiogenesis and neurogenesis, and improving functional outcome in rats following traumatic brain injury
Authors: Xiong Ye , Mahmood Asim , Zhang Yanlu , Meng Yuling , Zhang Zheng Gang , Qu Changsheng , Sager Thomas N. , Chopp Michael
Published: November 2010

Object

Carbamylated erythropoietin (CEPO) is a modified erythropoietin molecule that does not affect hematocrit. In this study, the authors compared the efficacy of a single dose with a triple dose of CEPO treatment for traumatic brain injury (TBI) in rats.

Methods

Traumatic brain injury was induced by controlled cortical impact over the left parietal cortex. Carbamylated erythropoietin (50 μg/kg) was administered intraperitoneally in rats with TBI at 6 hours (CEPO × 1) or at 6, 24, and 48 hours (CEPO × 3) postinjury. Neurological function was assessed using a modified neurological severity score and foot fault and Morris water maze tests. Animals were killed 35 days after injury, and brain sections were stained for immunohistochemical analysis to assess lesion volume, cell loss, cell proliferation, angiogenesis, and neurogenesis after CEPO treatment.

Results

Compared with the vehicle treatment, single treatment of CEPO (6 hours) significantly reduced lesion volume and hippocampal cell loss, enhanced angiogenesis and neurogenesis in the injured cortex and hippocampus, and significantly improved sensorimotor functional recovery and spatial learning in rats after TBI. Importantly, triple dosing of CEPO (6, 24, and 48 hours) further reduced lesion volume and improved functional recovery and neurogenesis compared with the CEPO × 1 group.

Conclusions

The authors' results indicate that CEPO has considerable therapeutic potential in TBI and related pathologies and furthermore that repeated dosing in the subacute phase might have important pharmacological relevance.
Insight into the Strong Antioxidant Activity of Deinoxanthin, a Unique Carotenoid in Deinococcus Radiodurans
Authors: Ji Hong-Fang
Published: November 2010

Deinoxanthin (DX) is a unique carotenoid synthesized by Deinococcus radiodurans, one of the most radioresistant organisms known. In comparison with other carotenoids, DX was proven to exhibit significantly stronger reactive oxygen species (ROS)-scavenging activity, which plays an important role in the radioresistance of D. radiodurans. In this work, to gain deeper insights into the strong antioxidant activity of DX, the parameters characterizing ROS-scavenging potential were calculated by means of quantum chemical calculations. It was found that DX possesses lower lowest triplet excitation energy for its unique structure than other carotenoids, such as β-carotene and zeaxanthin, which endows DX strong potential in the energy transfer-based ROS‑scavenging process. Moreover, the H-atom donating potential of DX is similar to zeaxanthin according to the theoretical homolytic O-H bond dissociation enthalpy. Thus, the large number of conjugated double bonds should be crucial for its strong antioxidant activity.
Role of HIV Subtype Diversity in the Development of Resistance to Antiviral Drugs
Authors: Wainberg Mark A. , Brenner Bluma G.
Published: November 2010

Despite the fact that over 90% of HIV-1 infected people worldwide harbor non‑subtype B variants of HIV-1, knowledge of resistance mutations in non-B HIV-1 and their clinical relevance is limited. Due to historical delays in access to antiretroviral therapy (ART) on a worldwide basis, the vast majority of reports on drug resistance deal with subtype B infections in developed countries. However, both enzymatic and virological data support the concept that naturally occurring polymorphisms among different nonB subtypes can affect HIV-1 susceptibility to antiretroviral drugs (ARVs), the magnitude of resistance conferred by major mutations, and the propensity to acquire some resistance mutations. Tools need to be optimized to assure accurate measurements of drug susceptibility of non-B subtypes. Furthermore, there is a need to recognize that each subtype may have a distinct resistance profile and that differences in resistance pathways may also impact on cross-resistance and the selection of second-line regimens. It will be essential to pay attention to newer drug combinations in well designed long-term longitudinal studies involving patients infected by viruses of different subtypes.
Corporate E-learning Strategy
Authors: Sitnikov Sergey , Kruk Boris , Zhuravleva Olga , Chupakhina Natalia
Published: November 2010

Not the least factor, when launching the corporate training, is strategy determination. On the one hand, an educational institution has to follow the market and be able to satisfy the demands of corporate clients and companies. It is a so called market adaptation. However, this approach implies a number of shortcomings. An excessive interest in market adaptation may lead to lop-sided development of training process: the educational institution turns into the mirror reflecting the corporation opinion and moulds its vision of the future only due to demands of the corporation. In contrast to that, there is an approach when the educational institution searches appropriate development directions independently, thereby taking the lead over corporationsâ?? demands and competitors. Such educational institution tends to excel in changes, which happen in the market, and to make the strategy satisfy future interests and demands of the corporation.

Traditional training is grounded on the disciplinary approach to training. However, today business faces complex problems which solution can be found at the joints of disciplines and activities. Companies need multidisciplinary approaches to training. It is very important to keep the balance between conditional training with the disciplinary approach and training in partnership for multidisciplinary programs.

This paper describes the example of corporate e-learning course for managers and top managers from a major telecommunication company. Each module is dedicated to a concrete interdisciplinary topic developed by a group of several teachers. Practical part of the module consists of concrete problems, which employees have to solve while training.
Mathematical Modeling of Cooperative E-Learning Performance in Face to Face Tutoring (Ant Colony System Approach)
Authors: Mustafa Hassan Mohammed
Published: November 2010

Investigational analysis and evaluation of cooperative learning phenomenon is an interdisciplinary and challenging educational research issue. Educationalists have been interesting in modeling of human's cooperative learning to investigate its analogy with some learning aspects of observed social insect behavior. Specifically, this paper presents realistic modeling inspired from interdisciplinary integrated fields of ecology, education ,and animal behavior learning sciences. Presented modeling considers cooperative behavioral learning at ant colony system (ACS). That's motivated by qualitative simulation results obtained after running of an ACS algorithm searching for optimal solution of Travelling Salesman Problem (TSP). In the context of computational intelligence ; cooperative ACS algorithm reaches optimal TSP solution analogously to convergence process of Hebbian coincidence learning paradigm. Moreover, suggested mathematical modeling presents diversity of positive interdependence aspect observed during human's interactive cooperative learning. Interestingly, presented analysis and evaluation of mathematically modeled practical insights of adopted phenomenon, may shed light on promising future enhancement of cooperative learning performance.
Visualization Cockpit: Orchestration of Multiple Visualizations for Knowledge-Exploration
Authors: Nazemi Kawa , Breyer Matthias , Burkhardt Dirk , Fellner Dieter W.
Published: November 2010

Semantic-Web technologies and ontology-based information processing systems are established techniques, in more than only research areas and institutions. Different worldwide projects and enterprise companies identified already the added value of semantic technologies, so they work on different sub-topics for gathering and conveying knowledge. As the process of gathering and structuring semantic information plays a key role in the most developed applications, the process of transferring and adopting knowledge to and by humans is neglected, although the complex structure of knowledge-design opens many research-questions. The customization of the presentation itself and the interaction techniques with these presentation artifacts is a key question for gainful and effective work with semantic information. The following paper describes a new approach for visualizing semantic information as a composition of different adaptable ontology-visualization techniques. We start with a categorized description of existing ontology visualization techniques and show potential gaps.
Research on Dynamic Characteristics of Steel Bridge Deck Thin Paving
Authors: Xu Xun Qian , Ma Ye Yuan , Wu Guo Qing , Gao Xiu Mei
Published: November 2010

Basing on the coupled vibration theory, dynamic characteristics of steel bridge deck thin paving were investigated. Interaction model and coupled vibration partial differential equation were derived for the coupled vibration system of vehicle and bridge-deck-paving. The results obtained from the finite element analysis were compared with those from the field test, and in general, a good agreement was achieved. Effects of load lateral distribution and road roughness and surface crack and cohesive layer condition on the dynamic amplification factor (DAF) were studied. The results show that adding epoxy asphalt as a sub coat can reduce the dynamic amplification factors obviously, which would be designed as the cohesive layer of steel deck thin paving.
Research on Jet Electrodeposited Cu-Al2O3 Nanocomposition Coatings
Authors: Chen Jin Song , Huang Yin Hui , Qiao Bin , Yang Jian Ming , He Yi Qiang
Published: November 2010

A jet electrodeposition device was carried out to prepare Cu-Al2O3nanocomposite coatings. The influence of the concentration of Al2O3in the electrolyte and the parameters on the content of the Al2O3in the deposit was investigated. The coatings ingredient and microstructure was measured by the scanning electron microscope, the microhardness tests were conducted on an microhardness tester. The results show that the copper deposited layers have nanocrystalline microstructure with grain size of about 50nm . The amount of Al2O3in composites first increased and then decreased with an increase in the concentration of Al2O3, current density, temperature and jet velocity. The composite with optimum atomic percent of Al2O3(14.4 at%) can be obtained at the concentration of 30 g/l , cathodic current densities 300 A/dm2, temperature 30°C, and jet velocity 8 m/s . The addition of Al2O3in copper increases the microhardness of the electrodeposited coatings.
An Improved Adaptive Interpolation Scheme for NURBS Curve
Authors: Chen Jian Xiong , Lin Shu Wen
Published: November 2010

This paper proposes an improved adaptive NURBS curve interpolation scheme, which keeps a constant feedrate most of the time and adaptively changes feedrate with consideration of machine dynamics. It reserves the advantages of adaptive planning, which has a shorter machining time and a better machining performance, and removes abrupt feedrate changes at the beginning and end of sensitive corner. Furthermore, this method reuses the previous interpolation values during look-ahead planning rather than discard them.
Research on Swirl-Core Nozzle with Adjustable Spray Angle Based on Vortex Theory
Authors: Bao An Hong , Yang Ming Jin , Dai Xing , Qiu Zhen Yu , Xie Shou Yong
Published: November 2010

According to Vortex Theory, the fluid flow in a swirl-core nozzle was analyzed, and an equation of spray angle was presented. The fluid in this nozzle was simulated by Volume of Fluid Model through CFD. The fluid dynamic simulation results show that diameters of nozzle opening and swirl chamber, area of spiral groove, and helix angle of the spiral groove affect the spray angle. There are optimum structural parameters for a swirl-core nozzle, and the spray angle can be adjusted by changing the depth of the swirl chamber with fixed structural parameters of the nozzle.
Research on the Measurement System of Large Dimension Workpieces Based on the Technology of CCD and Laser
Authors: Yang Xiu Min , Wang Yan , Zhao Wei Lun , Zhang Lei
Published: November 2010

A kind of the measurement technique of the dimension and the geometry error of large dimension workpiece with two light routes and two CCD sensors has been made. The mathematical models of the dimension and the geometry error based on the technology of CCD and laser are established. The application property parameter to measure workpiece dimension and geometry error and the design characteristic related supplemental hardware of CCD sensor are studied. An on-line data collection system based on laser and liner array CCD is developed. This systematic C8051 single-chip microcomputer as controler that adopt American CYGNAL company's production carry out handling and the collection of data. the system meets the measurement requirement of no-touch, on line and high precision with adopting of machine, laser and electricity comprehensive technology. The result can be got in this paper: the CCD sensor can meet the need of measuring dimension and geometry error of big workpiece and is no-touch, on line measurement and high precision. The on line collecting data system can achieve the expecting function, and measure data on line, and it also can easily connect with auto control apparatus.
Simulation and Analysis of Dynamic Evolution of Electricity Market Based on Bidding Decisions with Heterogeneous Expectations
Authors: Zhang Meng , Yang Hong Ming , Yang De Lun
Published: November 2010

Based on different bidding decisions with heterogeneous expectations of market participants, a dynamic model of electricity market considering power network constraints is proposed. This model is represented by a discrete difference equations embedded with the optimization problem of market clearing. By using the nonlinear complementarity function, the complex dynamic behaviors of electricity market are simulated and analyzed. The Nash equilibrium and its stability, the periodic and even chaotic dynamic behaviors beyond the stability region of Nash equilibrium are investigated.
Simulation Research on Special-Section Ring Radial Rolling Technology
Authors: Sun Bao Shou , Qi Liang Tao , Shu Xue Dao
Published: November 2010

Finite element model was established for the special-section ring rolling. The whole process of ring rolling was simulated based on the DEFORM software. The law that the rolling force is influenced by the idle roll feed speed and main roll rotational speed were found. The results show that the roughcast structure should be similar to finished product structure. IT is significant to optimize roughcast structure and processing parameter, and to improve efficiency of rolling.
Sixth Drawing Process Analysis for Electrodeposited Nickel Coating Battery Shells
Authors: Zhou Li Qun , Huang Xia Chun , Fu Cai Ming
Published: November 2010

A finite element method is used to simulate the sixth drawing process of nickel coating battery shells. The material’s mechanical parameters are tested and shown and the forming tool parameters are given. The Belytschko-Wong-Chiang shell elements are used and the kinematical work hardening model is adopted for the sheets. The stress-strain field in the components in the forming processes is obtained. The nickel coating yielded at the drawing process, the effective plastic strain reached 0.3769-0.7524. The coated sheet does not delaminate in the bonding interface during the deformation process. This study can aid the production of coating battery shells.
The Build of Digitized Design and Manufacture System for NC Machine Tool
Authors: Hu Ping , Yin Guo Fu
Published: November 2010

According to the development of Numerical Control (NC) machine tool’s manufacture, the way to build a platform of digitized design and manufacture system for NC machine tool was proposed, in which the various and relatively simplex digitized technologies were conformed as well as closely combined with the network and information technologies. From that, the real-time and parallel simulation in the whole process of NC machine tool’s design and manufacture would be achieved. Along with the all-sided expanding of digitized technology in the design field of NC machine tool, the corporations’ colligation which includes design, manufacture and management would be greatly upgraded and the development of entire manufacture will be expedited. And the mechanical equipments’ design and manufacture will be promoted at a larger-scale.
The Dynamic Performance Research of Fixture for Automobile Hydraulic Vibration Reliability Test
Authors: Zeng Yi Shan
Published: November 2010

In order to test the reliability of automobile hydraulic, the vibration reliability test needs to be done. The fixture, which is used to clamp and fix the hydraulic system, is one of the most important components of the test. So the dynamic performance of the fixture has great influence on the vibration test. According to the figure and setting localization of electronics, the three-dimensional model of fixture was constituted. The modal frequency and vibration modal were calculated using FEM. By the result of analysis, the structure of the fixture was mended to meet the test requirement.
The Matching Pursuit Method for Extracting Feature Based on DT-CWT and its Application
Authors: Chen Zhi Xin , Shu Xue Dao , Wang Cheng Lin , Xie Shi Kun
Published: November 2010

A matching pursuit method based on Dual-Tree Complex Wavelet Transform (DT-CWT) is proposed for extracting feature. Many new orthogonal wavelet bases formed Hilbert transform pairs is constructed by the method which is based on the sufficient and necessary condition on constructing wavelet, via the flat delay filter, and translated the problem into resolving algebraic equations. And taking these wavelets as choice object, a matching pursuit method based on DT-CWT is used for extracting feature. The matching pursuit method is based on series expansion of the signal by a set of elementary functions of orthogonal wavelets formed Hilbert transform pairs to match feature more effectively. Simulation testing and field experiments confirm that the proposed method is effective especially in extracting impulsive feature on high intensity noise, which matching pursuit method based on Discrete Wavelet Transform and other wavelet de-noising methods based on threshold and frequency-band, etc cannot do it completely.
The Research of Agile Manufacturing Based on Load Current of the Equipment
Authors: Li Guo Fu , Fang Teng Fei , Luo Liang
Published: November 2010

The agility of manufacturing is the key to agile manufacturing (AM). An enterprise can achieve agile manufacturing by inter-firm cooperation or by improving the agility of firms itself internal process. The information about operating state of equipment plays an important role in agile manufacturing and it has a homologous relationship with load current, which has different features at different work loads. According to these, we can collect and statistic devices working information by detecting and analysing the current of the equipment. On this basis, we submit the implementation strategy for agile manufacturing based on equipment load current, achieve the goal of improving the overall agility of the manufacture enterprise by effective agility promotion of production operations planning and manufacturing process control. This method can promote the rationality of resource utilizations in process of manufacture, and improve the agility of the enterprise.
The Research on Generation of Arc Face-Gears
Authors: Cui Yan Mei , Fang Zong De , Su Jin Zhan , Cai Xiang Wei , Wang Li Ping
Published: November 2010

By a study on the theory of generation processing arc face-gears, a machining method was designed by generation characteristics on the arc face-gears pairs. Based on coordinate transformation principle and meshing equation, the arc tooth surface equations were derived and corresponding 3D model was build. It verifies the feasibility of generation processing the arc face-gears. Conjugate enveloping guarantees precise action on the arc face-gear pairs. Gear surface generated by machining angle, curvature features are improved which is helpful to obtain top-quality transmission. Independent cutting major movement achieves high-speed and high-precision process. It is convenient to generating arc face-gears by using the general multi-axle numerical control machine with the common Gleason Cutter. The manufacturing process is simple.
The Ultrasonic Signal Identification of the Nickel-Based Superalloy Based on the Wavelet Neural Network
Authors: Yin Xin , Liu Yuan Peng
Published: November 2010

By using the good time-frequency localized nature of the wavelet transformation and self-learning function of the traditional artificial neural network, this paper constructed a wavelet neural network model for the blemish signals in ultrasonic testing of the nickel-based superalloy GH4169, and it could recognize types of the blemish signals. The results show that the method is effective in fault diagnosis. Finally the article has confirmed its feasibility and superiority.
Total-Probability Method in Reliability Design of Gear Strength
Authors: Li Yan , Xiao Wei , Huang Hai Yang , Yuan Ying Cai
Published: November 2010

Total probability method is based on stress-strength interference theory. There are four acceptable distribution types for gear (strength, stress), which are normal distribution, lognormal distribution, Weibull distribution and the smallest extreme value distribution. Based on the four distribution types, 16 different stress-strength distributions were obtained through permutation respectively. The results show that they summarize the mathematical model of reliability calculation for the gear actual failure mode and get the exact solutions of gear reliability.
Computer Aided Price Quoting Package for Injection Mould Based on Standard Man-Hour Method
Authors: Jia Zhi Xin , Wu Hong Bing , Li Ji Qiang , Fang Ming Cai
Published: November 2010

Mold companies are always facing the urgent price quotation requirements for plastic parts from customers in today’s competition market. This paper analyzed the price composition based on the standard man-hour method of plastic mould. Furthermore, the calculation of manufacturing cost for injecting mold was discussed. A computer aided quotation package for small and medium mould company was developed on SolidWorks software, by which the quotation of plastic mould can be obtained quickly. The application results of a number of actual cases show that the method can satisfy the engineering requirements of mold price.
Design of Surface Roughness Measurement Bench Based on Stewart Platform
Authors: Pan Xiao Bin , Tang Ya Ming , Zhou Xiao Jun
Published: November 2010

This paper designed a type of freeform surface roughness measurement bench using parallel-mechanism. The virtual prototype of surface roughness measurement bench has been established. Basic structure parameters and work-space of bench have been calculated according to the program of surface roughness test. An example of bearing outer circle roughness measurement based on Stewart platform has been analysed. From the example of measurement bench it is observed that the designed bench based on Stewart platform can be used as a multi-DOF structure in the freeform surface roughness measurement.
Electrodeposition of Fe-Diamond Composite Material for Manufacture of Diamond Tools
Authors: Pan Bing Suo , Fang Xiao Hong , Tian Yong Chang
Published: November 2010

For machining of hard and brittle materials, iron electrodeposit is a kind of matrix material with potential advantages for manufacture of diamond tools. Aiming at the problem of difficult codeposition of diamond in iron deposit, this paper adopts orthogonal design of experiment to study the effects of solution pH value, cathodic current density, alkylphenol polyoxyethylene (10) ether (OP-10) concentration and ammonium chloride concentration on codeposition of diamond, and then Fe-based diamond bits were fabricated and drilling tests in granite were carried out. The results show that pH value, cathodic current density, OP-10 concentration and ammonium chloride concentration all have statistically significant effect on codeposition of diamond in iron deposit, whose contributions to the variance of the weight of codeposited diamond are 37.45%, 32.05%, 13.13% and 12.38%, respectively. The result of drilling test indicates that Fe-based diamond bit can achieve much higher penetration rate than common Ni-based diamond bit.
Experimental Study on Piezoresistivity and Magnetoresistivity of Magnetorheological Elastomers
Authors: Ye Wei Qiang , Deng Yi Min , Wang Wei
Published: November 2010

As a new type of smart materials, magnetorheological elastomer (MRE) has become a hot current research focus. However, the piezoresistivity and magnetoresistivity of MRE have not been well studied. In this paper, this was done by using a test rig developed by the authors. The experimental results showed that the conductivity of the MRE responded sensitively to the applied pressure, and a linear relationship between the resistivity of the MRE and the applied pressure can be observed within a certain range. Besides, the sensitivity of piezoresistivity is different among different ratios of metal content, and it becomes more obvious when using the nickel content. And, the magnetoresistivity of MRE is not obvious in a range of low magnetic field intensity, and there is also no hysteresis phenomenon about magnetoresistivity.
Fatigue Life Analysis of Large-Scale Liner Vibration Screener Based on ANSYS
Authors: Wang Yong Yan , Fu Xin Hua , Guo Tian Tong , Chen Li , Mao Hui Qing
Published: November 2010

Based on the theory of fatigue life prediction and by using the local stress-strain method and the material S-N curve of Q235 deduced by empirical formula; the fatigue was analyzed for the key parts of large-scale liner vibration screener by means of the general finite element analysis software, ANSYS. Thereby, the working conditions of force bearing, reliability and fatigue life-span of the key parts can be judged. The study will provide a theoretical basis for the design , manufacture, and installation of the large-scale liner vibration screener.
Feasibility Study of Using the Chinese Traditional Five Elements Chromatology on the Industrial Design
Authors: Zhou Yue Xi , Shen Fa , Yang Li Li
Published: November 2010

In industrial design, Color is not only equally important for product design, but also for building the national brands and increasing the cultural added-value of products. Based on the sustainable development concept, not only analysis the Chinese traditional Five Elements Chromatology is similar to the Modern Chromatology, but also analyzes its significance and the possibility of using it in industrial design. Meanwhile, the study also points out that the Chinese traditional Five Elements Chromatology could be well performed in computer design and networking platform, as well as in industrial design when we already set up the transformation and modernization digital annotation. Experimental results have proved the validity of the application of the traditional Five Elements Chromatology in modern society.
Influence of Bolted Joint on Dynamic Characteristics of Combined Three-Section Crossbeam
Authors: Guo Tie Neng , Guo Dong Liang , Cai Li Gang , Song Bin , Zhao Jing Nan
Published: November 2010

The combined three-section crossbeam is an important component in the heavy gantry CNC milling-lathing machine tool and the dynamic characteristics are key precision factors for the machine tool. Three sections of the combined crossbeam are bolted by large industrial bolts and the influence of bolted joints should be evaluated in the dynamic analysis of the combined crossbeam. The dynamic characteristics of the combined three-section crossbeam were extracted by the modal experiment. The FEM of the monolithic crossbeam was modeled to analyze the dynamic characteristic parameters. The comparison of the analysis result and experimental result were shown. The experimental result matched well with the FEM of the monolithic crossbeam without bolted joints. As a result, the influence of the bolted joints could be ignorable in dynamic characteristic for the combined three-section crossbeam.
Mechanical Analysis and Optimum Design of Universal Panel Construction Formwork System
Authors: Wang Kang , Wang Xiao Tao , Qu Min , Chen Xiao Dong
Published: November 2010

The mechanical analysis of a novel plywood formwork structure with steel frame was studied with finite element method systematically. By optimizing the parameters of the section shape, node position and the number of formwork heel, a kind of the optimization design scheme was presented. Less building construction materials and better mechanical property was accomplished by the scheme. By contrasting the optimization results with experimental results, the design method is valuable.
Microstructure and Wear Resistance of Laser Remelted Boronizing Layer of Petrochemical Key Parts
Authors: Chen Shu Fa , Lei Jian Bo , Liu Xiu Bo
Published: November 2010

The boronizing layers of 45 steel of drilling pump liner have been remelted with laser, and the wear resistance properties, phase transition and microstructures of the boronizing layers before and after laser remelting were analyzed. The results show that laser remelting enhances surface abrasive wear resistance properties by 40% ~90%. Laser remelting achieves improvements mostly by means of alternating boronizing layer morphologies, eliminating FeB and defects within boronizing layer, improving the interface bonding intensity, fining the microstructures, redistributing boron concentration and generating lots of alloy phases. The strong support to material surfaces by martensites gained during remelting process within transition area is also beneficial to improve wear resistance properties. It is shown from the practice that the laser remelting compound technology followed boronizing shall be widely used in surface hardening of petrochemical key parts.
Microstructure Design with Generalized Shape Optimization Based on Level Set Geometrical Description and X-FEM
Authors: Qiu Ke Peng , Zhang Wei Hong
Published: November 2010

In this paper, the microstructures with extreme properties are designed through the generalized shape optimization, which is implemented with the help of the smooth curves representation of the level set description and the numerical analyses of the eXtended Finite Element Method (X-FEM) with the fixed mesh work. The parameters of basic level set features are defined as the design variables. To calculate the given effective computation of microstructures, the energy method and homogenization method are physically identical. But the energy method is advantageous in computing efficiency and numerical implementation. Combining with the CONLIN algorithm, the periodic microstructures with the maximum elastic properties are obtained with the flexibility of handling the topological changes and solid-void boundaries. Numerical examples show the great interests in the microstructure design with the level set method and X-FEM.
Modern Logistics Service Quality Evaluation Index Selection and Empirical Research
Authors: Yang Zhou
Published: November 2010

SERVQUAL, a basic framework adopted wildly in evaluating service quality, was applied in the modern logistics with 32 theory indexes. In order to select the appropriate indexes, an empirical study was conducted by subject degree analysis and importance analysis with questionnaires by experts from logistics industry. An evaluation system consisted of 13 indexes from four dimensions, delivering reliability, service efficiency, equipment assurance and customer empathy, was constructed consequently. An empirical evaluation result of the typical logistics enterprises in Hunan Province proved its feasibility.
Numerical Simulation of Oil Mist Process in Cold Heading Machine
Authors: Xu Gao Chun , Hu Qing Xi , Li Li Min , Dai Chun Xiang
Published: November 2010

Based on control equations in fluid dynamics, the main thought of oil mist process for cold heading machine is proposed according to the idea of green manufacturing. The computation fluid dynamics (CFD) software is applied to simulate the multi-phase oil mist flow in control box. The simulation results give some figures including distribution and stream line path of multi-phase flow of oil mist in the control box. The results show that the inlet position of oil mist effects on its process and three types of control box are compared, from which the best type is obtained.
Numerical Study on Solidification Process and Shrinkage Porosity for Engine Block Casting
Authors: Liu Jin Xiang , Liao Ri Dong , Zuo Zheng Xi
Published: November 2010

The latent heat releasing and the criterion for shrinkage porosity in solidification progress of casting are studied. A numerical analysis is presented for solidification progress of the cylinder head casting using finite element method. The temperature distributions of the casting in different solidification phases are solved, and the shrinkage porosity is predicted. Based on this, the solidification progress of casting is evaluated. The simulation results can offer a helpful reference for casting design of cylinder head casting.
Optimization of Maximum Entropy Model Oriented to Bayes Prior Distribution Based on PSO
Authors: Dai Yi , Wang Zhong Min , Ling Guang
Published: November 2010

How to acquire prior distribution is a key to Bayes method. Firstly, a nonlinear constrained optimal model of probability density function based on the principle of maximum entropy is set up. By using Lagrange multiplier this constrained optimal problem is transformed to a non-constrained optimal one, which is solved by standard particle swarm optimization (PSO) algorithm. Secondly, a new improved particle swarm optimization (IPSO) algorithm is proposed because standard PSO is slow on convergence and easy to be trapped in local optimum. IPSO introduces the hybrid method from genetic algorithm (GA) so that the overall searching ability is enhanced; then linear decreasing inertia weight is used to optimize particles. The simulation examples show that IPSO is simple and effective and it can rapidly converge with high quality solutions.
Parameter Optimization for a Polymer Electrolyte Membrane Fuel Cell Model
Authors: Li Xin , Yan Qun , Yu Da Tai
Published: November 2010

The accurate mathematical model is an important tool for simulation and design analysis of fuel cell power systems. Semi-empirical models are easier to be obtained and can also be used to accurately predict the performance of fuel cell system for engineering applications. Particle swarm optimization (PSO) is a recently invented high-performance algorithm. In this paper, a parameter optimization technique of PEMFC semi-empirical models based on DKPSO was proposed in terms of the voltage-current characteristics. The simulated and experimental data confirmed the validity of the optimization technique, and indicated that PSO is an effective tool for optimizing the parameters of PEMFC models.
QNX and Simulink-Based Control Platform for HIT/DLR II Robot Hand
Authors: Jin Ming He , Wang Dong Jian , Fan Shao Wei , Chen Zhao Peng
Published: November 2010

This paper presented a control platform for HIT/DLR II robot hand, which is based on QNX real-time operating system and Simulink software. The platform accelerates the development of robot hand control algorithm and hardware-in-the-loop (HIL) testing using Model-Based Design techniques of MATLAB Simulink. This paper also validated the performance of the platform by using two applications: single-finger position control and grasp application.
Study on the Internet Protocol Television Development Strategy Based on Tri-Networks Integration
Authors: Yuan Wei Hai , Li Ya Ping
Published: November 2010

With the pilot program of tri-networks integration been finalized and implemented , the development of domestic IPTV (Internet Protocol Television) will usher in a new policy and market environment .On this premise, it is of great practical significance to be aware clearly of the problem and its priority, encountered in the process of disseminating IPTV, and to explore appropriate solutions. Besides, because of the importance and speciality of IPTV in tri-networks integration , to explore the development of the domestic IPTV needs to take into overall consideration the policy, technology, economy and even national security, and other factors.
Research of Revenue Sharing Contract Model under the Linear Quality-Demand in Supply Chain
Authors: Hu Jun
Published: November 2010

As quality management being of great importance on many companies increasingly, quality coordination has become the new one of supply chain coordination. When demand is in the linear correlation with quality in supply chain member, the traditional wholesale price has not coordinated the supply chain. In this paper, the revenue sharing contract is put forward under the linear quality demand and the coordination can be achieved through it. Also the decision variables such as price, quantity and quality are obtained.
Analysis and Implementation of UFS File System Based on Computer Forensics
Authors: Yang Lei , Gao Qin Quan , Luo De Lin , Wu Shun Xiang
Published: November 2010

UFS is the most important file system of the Unix OS and has been widely applied. Adequate understanding of its working principle and organization structure is the key that the computer forensics been successfully applied to this file system. Based on deep analysis of the system architecture and file access flow, this paper has proposed and realized a technology to analyse UFS file system and explored the data recovery thought. It provides forceful support for computer forensics technology applying to UFS .
Research of IPv6 in an Embedded Real-Time OS
Authors: Xu Ye , Zhao Hai
Published: November 2010

This paper designs and implements IPv6 protocol in WebitOS, an embedded real-time OS which is a self-owned intellectual property of Lab. of Embedded Technology, Northeastern University, China. WebitOS is developed on processor of ATmega128 MCU, and is designed to be a configurable embedded operating system and all of its function modules must be published in the form of software component. So the IPv6 module is designed to be in the form of software component too, and to be a co-existing module with IPv4 module. Then, the design of IPv6 header, IPv6 extend header, ICMPv6 header, IPv6 input process and output process, error message echo request and echo reply, neighbor solicitation and neighbor advertisement are fully implemented, respectively. Under the limited resource environment, IP address exhaustive problem is solved by the implementation of IPv6. Besides, the performance analyses between IPv6 and IPv4 are performed through some experiments.
PML’s Optimal Choice in Solving Helmholtz Equation
Authors: Zhang Bo
Published: November 2010

To solve truncation questions of calculation area(unbounded) of Helmhotlz equation, Berenger first proposed concept of Perfectly Matched Layer(PML) in 1994, the method optimizes boundary conditions and reduces computation quantities greatly. By choosing constants p,d,e of PML parameters , we obtain an optimal PML parameter in this paper . The final numerical experiments show that the result obtained by the PML parameter is almost same as accurate result of references [4].
Application of Amphibious Models in Evaluating Sensor Networks Based on LOOL Algorithm
Authors: Qu Zhi Ming
Published: November 2010

The implications of interposable information have been far-reaching and pervasive. In fact, few experts would disagree with the investigation of IPv7. In this paper, it is argued that though the World Wide Web can be made pervasive, certifiable, and semantic, superblocks and expert systems are compatible. It validated that scalability in the algorithm is not an obstacle. LOOL should not successfully store many randomized algorithms at once. These algorithms are withheld for now. On a similar note, the heuristic has set a precedent for psychoacoustic theory, and it is expected that security experts will measure LOOL for years to come. Using the LOOL algorithm, in conclusion, the amphibious models in evaluating sensor networks are available on the Web for public download.
The Development and Application of the Auto Parts Supplier Evaluation System
Authors: Du Li Zhen , Xue Ying Ying
Published: November 2010

According to the processing and methods of auto parts supplier evaluation and selection, this paper develops independently a set of Suppliers Evaluation System on basis of Matlab7.0. The system includes two functional modules that are Analytic Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). In the end, through examples proves the system can provide a simple operation tool and scientific, reasonable decision basis for managers.
Particle Swarm Optimization Based on Genetic Algorithms to Optimize Ultrasonic Conditions of Extracting Chinese Medicine Effective Component
Authors: Tian Jing Wen , Wu Yan Lu , Gao Mei Juan
Published: November 2010

Extraction analysis of Chinese medicine effective component is always the key technique in the production of Chinese traditional medicine. The paper introduces the conventional test method and particle swarm optimization based on genetic algorithms, which optimize ultrasonic conditions of extracting Chinese medicine effective component respectively. Experiment results show that the proposed approach in this paper is of high extraction rate, strong reliability, easy operation and can save a lot of manpower and material resources compared with traditional experiment way. So it makes clear that the presented method is of feasibility and effectiveness.
Research on the Control System of Sort Instrument of Cigarette Draw Resistance
Authors: Wang Xu Guang , Zhang Ji Wei , Guan Zhi Guang
Published: November 2010

With the development of society, the smoking safety has attracted a wide spread attention. Cigarette draw resistance is an important performance index in tobacco enterprises. The traditional instrument has some disadvantage, such as high cost, slow speed and low precision. Therefore, an automatic sort instrument of cigarette draw resistance is developed, which has self-owned intellectual property. In the instrument, the output of all motors is connected with the mechanical device directly and the TMS320LF2407 chip is used as the controller. The system has been used in a cigarette factory in Shandong province. The result of the experiment shows that the instrument is reliable. In the paper, the control system design is introduced in details.
The Modeling of Electromagnetic Linear Actuator for Vehicle Active Suspension System
Authors: Deng Zhao Xiang , Lai Fei
Published: November 2010

A new type of electromagnetic linear actuator for vehicle active suspension system is designed. Combined with the finite element analysis tool and electromagnetic induction principle, the finite element model and mathematic model are built up individually. Based on the simulation results, a prototype of electromagnetic linear actuator is developed. By comparison of the finite element simulation results and the experimental data, it shows the correctness of actuator design and simulation model.