bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Quality of Steering Systems Using the Honing Process and Surface Response Methodology
Authors: Silva Sandro Pereira , Brandao Lincoln Cardoso , Pimenta Pereira Rafael Flávio
Published: April 2011

Gears are components indispensable in power systems, gearboxes, and machine tools. Modern gears have preferably high strength, high hardness, wear resistance, and low weight. According to this characteristics, the manufacturing process of gear generally use undefined cutting edge. Nowadays, honing process has been introduced in Brazil into companies that manufacturing steering systems and gearboxes. Honing has great advantages that are the possibility of adjustment of gearing failures and mixed orientation of the manufacturing of grooves approaching to the pitch diameter. This paper shows an analysis of honing process that includes a modeling of accurate, the Brazilian development status, and mainly the optimization using response surface methodology. Tests were carried out in plant using 54 pinions of 4320-H steel with hardness of core of 295 HV2 and surface hardness of 600 HV2. The machine used in tests was a Fässler model HMX-400. The input parameters were spindle speed of pinion, speed of grinding wheel, feed rate, spark out, and cycle time. The results showed that the cycle time and feed rate influenced directly the helix form error and the evolvent profile error. The re-sults showed not only on the decrease of surface roughness but also on that, the geo-metric errors were below the standard DIN 5.
Study on the Simulation Model and High-Speed Characteristics of Cylindrical Grinding
Authors: Yang Jian Guo , Zhou Zhen Xin , Li Bei Zhi , Zhu Da Hu
Published: April 2011

The existing research shows that high-speed grinding is the main way to machining the common materials and difficult-to-machine materials efficiently and critically. However, the research on mechanism and high-speed characteristics of high-speed cylindrical grinding is few searched. Based on three-dimensional simulation software DEFORM-3D, the simulation model of high speed cylindrical grinding with single grit was established, and the relevant experiment of 3D simulation for high speed cylindrical grinding process was processed. In this paper, the impact of the grinding parameters, such as wheel speed and depth of cut on the grinding force and grinding temperature is explored through analyzing the variation of strain rate, grinding force and temperature, and found that the increasing strain rate can lead to the increase in grinding force and temperature. According to the simulation experiment results, the control model of grinding temperature for prediction of grinding temperature and optimization of grinding parameters, is analyzed and developed in the end. The engineering experiment, conducted on the high speed cylindrical grinder and measured grinding temperature with thermal infrared imager, has been carried out in this study. Engineering and simulation experiments results show good match, for grinding temperature would decline with the increasing wheel speed when the grinding depth keeps constant, and thus can reduce grinding burn, improve the surface quality of workpiece.
Real-Time Cutting Force Prediction and Cutting Force Coefficient Determination during Machining Processes
Authors: Tukora Balázs , Szalay Tibor
Published: April 2011

In this paper a new method for instantaneous cutting force prediction is presented, in case of sculptured surface milling. The method is executed in a highly parallel manner by the general purpose graphics processing unit (GPGPU). As opposed to the accustomed way, the geometric information of the work piece-cutter touching area is gained directly from the multi-dexel representation of the work-piece, which lets us compute the forces in real-time. Furthermore a new procedure is introduced for the determination of the cutting force coefficients on the basis of measured instantaneous or average orthogonal cutting forces. This method can determine the shear and ploughing coefficients even while the cutting geometry is continuously altering, e.g. in the course of multi-axis machining. In this way the cutting forces can be predicted during the machining process without a priori knowledge of the coefficients. The proposed methods are detailed and verified in case of ball-end milling, but the model also enables the applying of general-end cutters.
Interest of Multiphysics and Multilevel Simulation Approaches to Enhance the Machining Process
Authors: Rauch Matthieu , Hascoet Jean Yves
Published: April 2011

The rise of high speed manufacturing gave birth to high capabilities machine tools; meanwhile the constraints have increased. To face these challenges, several simulation solutions have been proposed. They cover many aspects of the manufacturing process such as CNC controller behavior, cutting forces estimation or geometric errors. However, most of them center on a specific view of the machining process. In contrast, combined multiphysics and multiscale approaches are beneficial, in particular for surface integrity improvements purposes. This paper discusses the interest of using simulation approaches at different levels. The first target is to analyze existing parameterizations. Then, a comparison of several parameters tuning extends the space of acceptable solution and provides new enhancements. Finally, a simulation method for form defect of machined surfaces identification is introduced. Several simulation solutions developed in the laboratory are taken as illustrative examples.
Surface Quality of Cavities Obtained by EDM Process
Authors: Zeilmann Rodrigo Panosso , Nicola Gerson Luiz , Bordin Fernando Moreira , Vacaro Tiago , Zanotto Mariana Czarnobay
Published: April 2011

The electrical discharge machining (EDM) is a process widely used in machining of complex geometries and hardened materials, conditions that often are not met by conventional machining processes. In EDM the electrode reproduces its image or geometry on the part and this image is obtained by chip removing process, which is given by high frequency electrical discharges, causing the melting and vaporization of electrically conductive materials. Due to this mechanism of material removal, the surface is subjected to high thermal loads, which heavily influences the surface quality of obtained parts. For the characterization of these surfaces must be considered the surface topography and the metallurgical changes of the subsurface layer, since both characteristics influence the functionality of the machined parts. In addition, several variables related to the EDM process have influence on the characteristics of the generated surface. This work presents a study of the influence of EDM process on the surface quality of square cavities. It was evaluated different regions of the cavities, such as side wall, bottom and corners. The results showed significant differences between the analyzed regions.
Development of a Prototype of Electrochemical Machining
Authors: Neto Silva , Cirilo João
Published: April 2011

Electrochemical machining (ECM) is the controlled removal of material by anodic dissolution in an electrolytic cell in which the workpiece is the anode and the tool is the cathode. The ECM presents the advantages: three-dimensional surfaces with complicated profiles can be easily machined in a single operation, irrespective of the hardness and strength of the material. ECM offers a higher rate of metal removal as compared to traditional and nontraditional methods, especially when high machining currents are employed. There is no wear of the tool, which permits repeatable production. This work shows a study of development of a prototype of electrochemical machining (ECM) developed at the Federal University of Uberlândia Minas Gerais-Brazil. A state-of-the-art ECM system is the art of assemblage of facilities including a proper ECM machine, a power supply, a process parameter control system, and an electrolyte preparation, feed and purification system. With the prototype developed, the material removal rate (MRR) was studied. The MRR was influenced by tool feed rate and type of electrolyte.
Finite Element Modeling of Microstructural Changes in Hard Turning
Authors: Caruso Serafino , Di Renzo Serena , Umbrello Domenico , Jayal Anshu Dhar , Dillon O.W. , Jawahir I.S.
Published: April 2011

The material grain size changes significantly during machining of hardened steels, and this must be taken into account for improved modeling of surface integrity effects resulting from machining. Grain size changes induced during orthogonal cutting of hardened AISI 52100 (62 HRC) are modeled using the Finite Element (FE) method; in particular, a user subroutine involving a hardness-based flow stress model is implemented in the FE code and empirical models are utilized for describing the phase transformation conditions to simulate formation of white and dark layers. Furthermore, a procedure utilizing the Zener-Hollomon relationship is implemented in the above-mentioned user subroutine to predict the evolution in material grain size at different cutting speeds (300, 600, 900 SFPM). All simulations were performed for dry cutting conditions using a low CBN-content insert (Kennametal KD050 grade, ANSI TNG-432 geometry). The model is validated by comparing the predicted results with experimental evidence available in the literature.
Research on New Technology of Energy Efficient Buildings and Utilization of Renewable Energy Sources
Authors: Sun Ya Guang
Published: April 2011

Current social development is pressing for energy efficient buildings. The trend of consistent updating of energy-efficient building technology reflects the importance and urgency of energy efficiency in buildings. Through analysis on the current situation of building development, it can be obtained that the energy efficient buildings as well as utilization of renewable energy sources in buildings will be bound to be one of main topics for discussion in future building design.
Preliminary Exploration of the Appropriate Technologies of Ecovillage in Germany - Taking Bramwich Ecovillage in Hamburg as an Example
Authors: Yue Xiao Peng
Published: April 2011

Germany has always taken the lead in the research of ecological energy-saving design and relevant high technologies in the world, while the appropriate technology is prospering in the ecovillages constructed in a self-organized way. By taking the Bramwich Ecovillage in Hamburg as an example, the present paper carries out primary explorations on appropriate technologies of German ecovillages, and summarizes the reasons of the success for these ecovillages. In the present paper based on the in-field interview and data collection in the ecovillages, the emphasis is put on the analysis of solar energy district heating system, energy conservation measures of low energy building and biological sewage technologies. So the paper is of practical significance in instructing the specific measures in the ecological construction of our country.
Discussion on Guidance Space and Mediation Space Environment Design in Cinema
Authors: Shi Qian Fei , Wang Yu Tao
Published: April 2011

In recent years, with the accelerating process of urbanization and increasing environmental problems, there has been increasing awareness of environmental quality for the taste of the importance of building space. Therefore, many buildings actively create the garden space environment in order to further improve the environment, enhance the image of architectural space and taste the environment. China has a rich cultural heritage and development advantages. Chinese contemporary landscape design should fully learn the traditional classical garden design, construction techniques and artistic expression, to guide the construction of indoor and outdoor landscape design. From the cinema users' point of view, the construction of indoor and outdoor space and intermediate space environment design are discussed, and this article introduced the two space environment to create the built environment means, and from the perspective of environmental psychology,cinema and architecture space environment lead the design of the space environment to improve the quality of cinema space.
Cooltek House in Malaysia
Authors: Muhammad Azzam Ismail , Fahanim Abdul Rashid
Published: April 2011

Currently, there is a distinct lack of innovative approaches to designing and building houses in Malaysia that could overcome the harsh climatic conditions to achieve thermal comfort. At the same time, demand for residential air-conditioning units has skyrocketed due to the lifestyle expectations of home buyers, the low prices of the units and the very low national residential electricity tariff. Most existing and new houses are not designed to be air-conditioned properly due to poor building material selections and endemic construction practices. These houses are not sealed and are thermally inefficient. Besides looking back to the indigenous passive solar design strategies, new design paradigms have to be explored and promoted for the benefit of all. One innovative approach that has been well-developed and proven successful is the Cooltek concept which was first used at a private bungalow in Melaka, Malaysia. The overarching principle of this concept is to reverse the role of the building envelope of colder climates from keeping the heat inside the building to keeping the heat out of the building which could provide a more conducive indoor environment for air-conditioning in order to reduce the indoor temperature and the relative humidity with minimal use of electricity. This paper describes the Cooltek concept and a case study in detail and how the concept works.
Applying Modular Greening Technology in Living Walls of Shanghai Expo
Authors: Wang Hong Bing , Qin Jun , Hu Yong Hong , Dong Li
Published: April 2011

The living wall of theme pavilion of Shanghai Expo was enrolled in World Record Association for its 5,000 m2area. The wall with modular design concept was also a symbol of energy-saving. This study took Shanghai Expo as a case to explore the modular greening technology including theory analysis, design factor and cooling effect. The technology has the following virtues: Environment-friendly idea of recycled waster paper pulp, reused litter and other organic waste; economy concept of collecting rain, holding water and nutrient in medium and tolerating extensive management; integrity medium formula; modular suitable to plant upward growth; applicable for district of hot summer and cold winter, Plum rain and typhoons. After victory exhibition of the World Expo, living wall will further popularize in compact metropolitans.
Analysis on the Optimal Subsidy Strategy of Government in Green Supply Chain
Authors: Jin Chang Fei , Wang Xin , Mei Li Jun
Published: April 2011

In order to study the role that the government played in the green supply chain, we constructed a supply chain model by two kinds of manufacturers, consumers and government environmental fund, on this basis, the optimal government subsidies and products' optimal production and price were obtained by game theory and utility function. Then, according to the results of numerical example we draw the conclusion that if the government adopts optimal subsidies policy, social welfare will be substantially increase, and the demand for green products will rise too, on the other side, the prices will be bring down. It is shown that with the guidance of the government subsidy mechanism, the green supply chain will be on the track that is conducive to the rapid development of environmental protection.
Multicriteria Evaluation of the Selection of Green Glazing Material by Using the Analytic Hierarchy Process (AHP)
Authors: Chen Cheng Chen , Chiang Che Ming , Horng Richard S. , Lee Shin Ku
Published: April 2011

The window glazing system provides comfortable living environment for residents and also exhibits the esthetics of architectural design. Its quality is dependent upon glass material selection; there are many factors determining glazing material selection, which might further affects the building safety and energy savings. An analytic hierarchy process (AHP) is used to analyze the trade-off of these impact factors. In the survey, both positive and negative impact factors on the glazing material selection are considered. The results, based on 40 expertise questionnaires, indicated that “performance”, in overall, was perceived to be most important core selection criterion for the green glazing material, but among all assessed items, “hazardous substance release” was concerned the most. The “appearance” was regarded as a minor factor in this analysis. In addition, BIPV alternative was also ranked in the first position regardless of criteria weight variations. The results provide valuable information for building material manufacturers, architects and interior designers in selecting glass material in their the glazing system.
Continuum Method and Effect Analysis of Energy Dissipation System for High-Rise Shear-Wall Structure
Authors: Gao Li Yan , Liu Wen Feng , He Yu Ao
Published: April 2011

In this paper, the continuum method is applied in the energy dissipation systems for high-rise shear-wall structure of double-limb in order to set up the differential equations of the limbs and the method about solving the equations according to mode superposition principle of linear system is discussed. The fundamental natural period of a example is calculated by self-compiled program with visual Fortran language and currency program SAP2000 in order to check the applicability, reliability and effect of the continuum method to the energy dissipation system for high-rise shear-wall structure.
Discussion on Humidity Environment Passive Adjustment Methods in Hot Summer and Cold Winter Zone
Authors: Liang Shuang , Liu Jia Ping
Published: April 2011

Humidity is one of the major factors affects the summer thermal environment in hot summer and cold winter zone. This article through calculation and analysis the humidity on environmental thermal comfort and influence of humidity the effect on the energy consumption, explain dehumidifying is one of the most efficient, energy saving measures to improve the hot summer and cold winter zone indoor thermal humidity environment. Aiming at the humidity environment characteristic in hot summer and cold winter zone, puts forward several design strategy of passive dehumidification for reference.
Energy Efficient Retrofit Technology of Existing Village and Town Residential Houses in Southern Region
Authors: Feng Xiao Ping , Zhang Pen Fei , Ji Su
Published: April 2011

A survey has been made to investigate possession of power-wasting facility and the present condition of building construction in existing village and town residential houses in southern region of Jiangsu. The results show that air-conditioners are widely used so that power-wasting is grow rapidly. In addition, because of the poor heat insulation of the house, indoor human comfort is poor. According to the house present conditions and the climatic conditions, the suited energy efficient retrofit technologies of the house enclosure are proposed.
Stress Performance Analysis on a New Type of Flexible Suspension Tension Structure
Authors: Zhang Ming Bo , Zeng Bin , Xu Qing
Published: April 2011

A new type of flexible suspension tension structure (FSTS) is presented in this paper, which has the advantages of high-efficiency, convenient construction and wide application sphere, and it is also a kind of green and low carbon structure. In order to investigate the mechanical behavior of FSTS under the vertical load, series of structures under 10 groups of upward loads and 8 groups of downward loads are calculated with the matrix analysis method. The results show that the passive tensions of cables and displacement in the middle of span present approximate linear features under the downward loads. However, there are double broken linear features in FSTS under the upward loads. So this regularity can be utilized for the simple analysis and two-stage design calculation. Finally, the reliability of FSTS with the initial tension is investigated with the interval method. 81 kinds of structures with different initial tension are calculated, and the influence regularity of the initial tension in the back cable and the bottom cable are given. It is found that the deformation of FSTS is more sensitive to the initial tension of cables. Consequently, the initial tensions of cables are dominated by deformation of structures under design and construction.
The Strategies for the Sustainable Development of the Old Industrial Building in China
Authors: Liu Wei , Tang Guo An
Published: April 2011

Sustainable strategies have been employed in the construction and retrofit of the old architectures, here we summarize the technology-related and humanity-related methodologies in the process of sustainable rebuild process in China and its relative results.
Bringing Natural Elements and Process into Landscape Design
Authors: Zhu Xun , Wang Wei
Published: April 2011

The article is aim to consciously bring natural elements and natural processes into landscape design, which have such sound effect of continuously changing features from a traditional garden. There are two main methods of design with natural thinking: one is expansion of the natural elements, including direct and indirect demonstration of the natural elements and abstract refinement of the natural forms; the other is expression of natural dynamic forces, such as site conditions, the forces of nature and ecological significance. The landscape reacting with natural affinity and dynamic helps people to re-perception, experience and care of natural realism and vitality.
Gas Diffusivity in Fractal - Characterized Porous Materials
Authors: Zhang Ge , Zhang Yun Fan , Ma Fei
Published: April 2011

The porous materials are usually the sources or sinks of indoor volatile organic compounds (VOC). In order to predict the VOC emission rate and choose best adsorbents, reasonable estimation of the diffusion coefficients of porous materials is required. Porous materials were usually depicted as a random network of interconnected pores of unspecified sizes and shapes. It may generate deviation to assume the network as simple topological structures. This paper investigated the diffusion coefficients of porous mate­­rials with the fractal theory and derived their diffusion coefficients considering the pore size distribution of the materials. The calculated result was validated by published experimental data.
Rheological Behavior of Bamboo Charcoal PET
Authors: Wang Li Na , Deng Zhao Xi , Wang Yan Wei
Published: April 2011

In this paper some of rheological properties of bamboo charcoal polyester (BC-PET) are presented. The BC-PET is derived from PET modified through commix with bamboo charcoal master batch. The additive content of blends ranged between 0% and 10%. Rheological measurements were effectuated with a Brookfield viscometer (RVDV-II+Pro). The results showed that molten BC-PET exhibited shear thinning fluid, these were verified with some rheological models. Non-Newtonian index decreased significantly and structural viscosity index increased obviously with the master-batch content increased, but the viscosity was stable in the shear rate range of spinning (γ=103-104s-1), so decreased the temperature was beneficial to spinning.
Appropriate Sustainable House Design for China’s Countryside
Authors: Cui Yi Fei , Cui Jun Shan , Zhou Meng Ling
Published: April 2011

This thesis studies on the principle and design of sustainable housing to find a low-cost and low-energy model for China’s countryside residents. Currently, the most popular energy source served in most sustainable houses is solar panel electricity energy system, which has been widely applied in western low-energy houses, but unfortunately is too expensive here. Consequently, we have to search for a cheaper and more easy-got energy system. By collecting data and doing relative research, it turns out that the solar energy heater is the most available source. After an on-line secondary survey, the appropriate areas for developing solar energy sustainable housing industry could be located with the figure of annual sunshine hour in different cities. Then, by studying mature sustainable architectures and translating them to a more convenient, economic house plan adjusting to common Chinese families, a model of low-energy residential houses which is suitable for developing countries like China could finally be made, as well as the way to change the environment pollution and energy waste model in housing industry in these areas.
Ecological Agriculture Technology in Urban Agriculture
Authors: Lv Yan Hang , Zhang Rui
Published: April 2011

Farming in city is the most significant practice of Urban Agriculture with important social and economic impact. It constructs a stable and sustainable eco-recycling system, utilizing daily waste for crops irrigation, livestock breeding and energy production. And these ecological technologies will be discussed about ecological characters, scientific principles and operation steps, to present the artificial agro-ecosystem efficiently in limited space.
Wind Design Practice for High-Rise Residential Districts in Liaoning Coastal Cities
Authors: Guo Fei , Yue Fan , Hu Shen Jian , Deng Wei
Published: April 2011

Windbreak design for high-rise residential districts in Liaoning coastal cities is a decisive factor and favorable to deduce building energy due to the high mean wind speed in winter. The article discussed the windbreak strategies for local residence districts and to apply them to an actual architectural scheme using CFD simulative technology
The Study of Method Preparing Golden Yellow Melted Glass and its Optical Performance
Authors: Bai Xiao Hua , Wang Yong Gang
Published: April 2011

This paper presents the method of preparing a new golden yellow glass with relatively strong absorption of ultraviolet light. This golden yellow glass is to be produced from the glass raw material, Na2O-CaO-SiO2, as fundamental material with addition of cerium(IV) Oxide (CeO2) and titanium(IV) Oxide (TiO2) in combination as colorants.The analysis of spectrum transmittance and chroma Index have been carried out on the plates of this golden yellow glass by light dispersion equipment CARY500. Results indicate that the optical performance and chorma index of this new Golden Yellow melted Glass are largely depended on the factors such as concentration of colorants , oxidizability – reducibility of mixed batch and addition of fluorite.
Properties of Flexible Fiber and Rigid Fiber Reinforced Cement Concrete Used on Surface Layer of Wharf Pavement
Authors: Wang Yan Ming , Liu Ke , Yang Wen Wen , Sun Ji Zheng
Published: April 2011

Different fiber reinforced concrete was experimentally investigated by adding flexible fiber and rigid fiber respectively into C20, C30 and C40 plain concrete. First the workability of fiber reinforced concrete was tested. Then the mechanical property and frost resistance property was tested after curing on standard condition for 28 days. The flexible fiber is American Durafiber and domestic nylon fiber. The rigid fiber is domestic steel fiber. The result shows that fiber concrete can improve cohesiveness and water retention, the flexible fiber reinforced concrete presents more apparent. Compared with plain concrete, the slump and setting time decreases a little for flexible fiber reinforced concrete and increases a little for rigid fiber reinforced concrete. The compressive strength and flexural strength of fiber reinforced concrete can be increased compared with plain concrete. The rigid fiber reinforced concrete presents more obviously. For example, the compressive strength and the flexural strength of C30 concrete with the addition of steel fiber were increased by 24% and 34% respectively. The frost resistance of fiber reinforced concrete improves compared with plain concrete. The flexible fiber reinforced concrete presents more noticeably. For example, after 250 freezing-thawing cycles, the mass loss of C30 concrete with the addition of Durafiber is decreased by 15% and the relative dynamic elastic modulus is increased by 6% compared with plain concrete.
Energy-Efficient Land-Saving and Low-Carbon Art of Dwelling Environment - Research from the Underneath Type Earth Cave Dwelling in Bai She Village, San Yuan County of Shaanxi Province
Authors: Li Yuan , Wu Wen Chao
Published: April 2011

The purpose of this paper is that energy-efficient and land-saving buildings should be designed and constructed using low-tech approaches according to local regional properties, which is the foundation of the art of dwelling environment. The experiment consisted of three steps, which are described in: first and foremost, this paper submits that the climate crisis of global warming has become a problem and disaster faced by people all over the world. As every individual plays a part in leading to the outbreak of the disaster, our human beings should adjust our life style and structure to minimize our energy consumption. In the next place, this paper analyzes these reasons of the underneath type earth cave dwelling belonging to the type of building format, which possess the advantages of resource friendly and zero carbon emission. Finally, this paper takes the example of the underneath type earth cave dwelling in Bai She Village, San Yuan County of Shaanxi Province as a research case. In conclusion, this paper explains the art of dwelling environment in the format of underneath type earth cave dwelling after renovation and improvements in terms of technology and architectural esthetics.
The Research and Application of Short Message Name and Address System
Authors: Zhang Chen Guang , Zhao Yu Lan , Jiang Feng Xian , Ji Chao
Published: April 2011

With the rapid development of mobile communication technology, the short message name and address system [1] has been developed swiftly nowadays. We make the short message to be a kind of carrier, for delivering the requirements which clients required and return the answers which clients seek for. This paper contains such contents as follows based on the research of the system: analyzing the problems and defections existed in the system, enhancing the transfer mode to be a standard way, and improving the efficiency of data query and transfer. Taking advantages of the superiority of this system and innovate on the technology, we have completed a business software based on J2ME platform[2-7].In the research and development process we designed client-side functions and structural model combined with some functions used on the mobile phones, accordingly, the system technology has been practiced to some extents. And we optimize the software interface by a third party plug-in board called the “polish”, this work must will provide far-reaching significance for later research on this technology.
Design of Wireless Monitoring System of Semi-Lean Pumps
Authors: Li Yue , Ma Ru Jian
Published: April 2011

A design scheme is proposed in this paper for wireless monitoring system of semi-lean pumps based on ZigBee and XBee-Pro module. The XBee-Pro module is placed inside the semi-lean pump to monitor the working parameters. The monitoring data is transmitted to the computer in the monitoring and control center by means of ZigBee through routers and coordinators. System tests show that wireless network system based on ZigBee and XBee-Pro module is convenient to use and reliable to transmit monitoring data.
SPN-Based Performance Evaluation for ON-OFF Voice Traffic System
Authors: Hong Zhi Guo , Wang Yong Bin , Shi Min Yong
Published: April 2011

By taking voice traffic system as study object, mathematical modeling methodology was used to investigate different parameters’ variations on system’s performance. Firstly, on the basis of analyzing the characteristics of voice traffic, this paper constructed a Stochastic Petri Net (SPN) model for ON-OFF voice traffic system. Furthermore, average time delay of the system was analyzed and model-based simulation was conducted with Stochastic Petri Net Package (SPNP) 6.0. For different parameters of ON to OFF rate and user’s voice connections, variation trends of number of user’s connections and ON to OFF rate are derived thereby. The methodology of modeling and simulation in this paper can be further used to analyze the performance of multimedia hybrid traffic system.
Experiment Study on Thermodiode and Energy Storage Material
Authors: Li Shi Dong , Zhang Ren Yuan , Liu Liang De , Zhong Hao Yuan
Published: April 2011

To research for application of thermodiode in energy storage solar water heater, experimental research on heat transfer of thermodiode using myristic acid as heat storage material was made, starting characteristics of thermodiode using acetone and R134a was compared. Especially for working fluid of R134a, influence of thermodiode on heat storage process of myristic acid was tested for under different working conditions such as thermodiode’s positions, liquid charge ratios, etc. Test result shows, thermodiode charged with R134a was quicker in start-up than the case of myristic acid; with liquid charge ratio of 80% , heat transfer coefficient was the highest; with an inclination angle η=30°C of thermodiode plane to horizontal plane, an inclination angle α=10°C of heating-evaporating section to horizontal line, 25W power input and a liquid charge ratio of 80%, average heat transfer coefficient was 113 W/(m2·K).
The Impact of Brand Experience on Relational Benefit: The Role of Brand Familiarity, Brand Image and Brand Personality
Authors: Xu Yue Heng , Zhang Ming Li , Tang Sai Li
Published: April 2011

Little research has considered brand experience and relational benefit together in a single model. This study was designed to investigate how brand experience enhances relational benefit. Using a self-administered questionnaire survey, 182 effective respondents from college students were used for the study. In this paper, an integrated model was established through the inclusion of brand familiarity, brand image, brand personality. The study finds that brand experience could be positively associated with relational benefit indirectly and that brand familiarity, brand image and brand personality could serve as mediators between them. The finding suggests that practitioners better understand customers’ perceptions towards relational benefit and help them in developing marketing strategies to gain relationship with consumers.
A Data Stream Outlier Detection Algorithm Based on Reverse K Nearest Neighbors
Authors: Zhang Zhong Ping , Liang Yong Xin
Published: April 2011

This paper proposes a new data stream outlier detection algorithm SODRNN based on reverse nearest neighbors. We deal with the sliding window model, where outlier queries are performed in order to detect anomalies in the current window. The update of insertion or deletion only needs one scan of the current window, which improves efficiency. The capability of queries at arbitrary time on the whole current window is achieved by Query Manager Procedure, which can capture the phenomenon of concept drift of data stream in time. Results of experiments conducted on both synthetic and real data sets show that SODRNN algorithm is both effective and efficient.
The Design and Implementation of a Editor that Supports Syntax Highlighting of E-Lotos
Authors: Guo Xiao Qing , Zhao Yu Lan , Ji Chao , Jiang Feng Xian , Feng Le Le
Published: April 2011

Formal methods (FM) are mathematically based techniques that provide a rigorous basis for software development: the application of FMs makes it possible to achieve provable correctness and reliability in the various steps of system design and implementation. Generally, Formal methods need the support of formal description technique (FDT). Because the FDL has strict syntax and semantics. It is the realization of the abstract to the concrete, strictly, can be symbolic execution, unambiguous. E-LOTOS formal description is an important technology. This paper describes the design and the implement of the editor that support syntax highlighting of E-LOTOS. The editor is implemented using java Swing and JFlex.
The Optimization on the Expected Utility Portfolio Selection Model without Short Sales
Authors: Zhang Peng , Wang Hui Li
Published: April 2011

A new expected utility (EU) portfolio selection model without short sales is proposed. In the model, the expected utility function is quadratic. The model is solved by the pivoting algorithm. The paper showed in the EU portfolio selection model without the short sales, the relationship between the risk preference coefficient and the expected return is not linear but more complex. The risk preference coefficient could just reflect the investors’ preference in some intervals. We wrote program to calculate the optimal portfolios with the different coefficient. Investors could choose the optimal investment strategy according to both their own risk preference and the expected return of the portfolio.
Extensive 6.0-18.0 GHz Frequency Low Noise Amplifiers Integrated to Form LC-Feedback Oscillators
Authors: Yang Hsin Chia , Wang Mu Chun
Published: April 2011

Low Voltage supplied radio-frequency (RF) CMOS devices by TSMC 0.18 micron process are used for the RF circuit designs of low noise amplifiers. Three components, low noise amplifiers (LNA), Class-E power amplifiers (PA), and LC oscillator simultaneously working at 6.0 to 18.0 GHz, are explored. The scenario combining two matched amplifiers, LNA and PA, and then amplifying the coupled signals from the oscillators is proven to be working. LNA usually runs prior to PA to suppress the noises, and thus the whole set functions like an integrated LNA, whose forward gain may be promoted as high as at least over 40 dB just as expected. At 6.0, 12.0 and 18.0 GHz, magnitudes of both S11 and S22 in the Smith Chart are deliberately tuned to approach to zero as shown. And Noise Figure determined to be 1.175 gives promising integrated circuit.
Effect of Hot Compression on Mechanical Properties of Gray Iron
Authors: Zhao Xin , Yang Xiao Ling
Published: April 2011

Gray iron was hot-compressed on a Gleeble 3500 machine. The effect of hot compression on mechanical properties of gray iron was studied. The result shows that gray iron with the sandwich structure of graphite and ferrite matrix is prepared after more than 45% reduction of hot compression. The mechanical properties of 80% hot-compressed gray iron are significantly enhanced: tensile strength from 117MPa to 249MPa, and total elongation from 0 to 5.2%. The tensile fracture surface presents ductility characters after more than 45% reduction of hot deformation. The increase of the strength and ductility of the hot-compressed gray iron is caused by delamination toughening.
A Novel Web Services Composition Compensation Method Based on Extended Petri-Net
Authors: Mei Xiao Yong , Jiang Ai Jun , Li Shi Xian , Huang Chang Qin , Zheng Xiao Lin , Fan Yi Yan
Published: April 2011

Web Services Composition (WSC)-based applications are widely using in the heterogeneous environment, which has inevitably led to the need for reliable methods for the WSC paradigm Firstly this paper presents formal description of Web service and then proposes a novel WSC compensation method based on paired net which can dynamically construct agile compensation business process according to original business process and implements it. Secondly, we introduce a formal definition of execution logs, which ensures the reliability and consistency of composition execution. Finally, Composition-based application of trip reservation process shows that it is feasible.
A Feasible Algorithm for Designing Biorthogonal Binary Finitely Supported Multiwavelet Functions
Authors: Yu Bao Min
Published: April 2011

Wavelet analysis has been a powerful tool for exploring and solving many complicated problems in natural science and engineering computation. In this paper, the notion of vector-valued multiresolution analysis is introduced and the definition of the biorthogonal vector-valued bivariate wavelet functions is given. The existence of biorthogonal vector-valued binary wavelet functions associated with a pair of biorthogonal vector-valued finitely supported binary scaling functions is investigated. An algorithm for constructing a class of biorthogonal vector-valued finitely supported binary wavelet functions is presented by virtue of multiresolution analysis and matrix theory.
A Novel Improved Edge Detection Method
Authors: Guo Yan Ying , Guo Yan Ying
Published: April 2011

In this paper, a novel morphological edge detection using adaptive weighted morphological operators is presented. The newly introduced operators employ weighted structuring element (SE) and apply multiplication or division in place of addition and subtraction in classical morphological operations. It judges its edge and its direction by means of training method and differentiable equivalent representations for the operators, efficient adaptive algorithms to optimize SEs are derived. The gradient of the adaptive weighted morphology utilizes a set of SEs to detect the edge strength with a view to decrease the spurious detail edge and suppressed the noise. Results will be presenting for images in comparison with the others edging detectors.
An Algorithm of Synchronous Mining Frequent Neighboring Class Set with Constraint Class Set
Authors: Tu Cheng Sheng , Fang Gang
Published: April 2011

Due to these reasons that present frequent neighboring class set mining algorithms are unsuitable for extracting any length frequent neighboring class set with constraint class set, this paper proposes an algorithm of synchronous mining frequent neighboring class set with constraint class set, which is suitable for mining any length frequent neighboring class set with constraint class set in large spatial database. The algorithm creates mining database through digitization method, and then gains candidate frequent neighboring class set with constraint class set via synchronous search strategy, namely, it uses computing (k-1)-subset of k-non frequent neighboring class set with constraint class set to generate candidate frequent neighboring class set, meanwhile, it also uses connecting (l+1)-superset of l-frequent neighboring class sets to generate candidate frequent neighboring class set with constraint class set, it only need scan database once to extract frequent neighboring class set with constraint class set. The result of experiment indicates that the algorithm is faster and more efficient than present algorithms when mining any length frequent neighboring class set with constraint class set.
Analysis on Welding Performance of the WH80 Steel Used in the Hydraulic Support
Authors: Cao Lian Min , Su Guo Xiu , Zeng Qing Liang , Xiao Xing Yuan
Published: April 2011

This paper mainly has carried on the analysis to the welding performance of high strength steel WH80, through the stretch and the bend test of manual welding rod, arc welding, the slanting y bevel weld crack test and the highest hardness test in welding heat-affected zone. It indicates that the WH80 steel has the good welding performance and is good material for hydraulic support.
Arithmetic Expression Evaluation in Membrane Computing with Priority
Authors: Guo Ping , Liu Sheng Jiao
Published: April 2011

Arithmetic operation and arithmetic expression evaluation are basic operations of a computing model. Based on the rules with priority, this paper discusses arithmetic operation and arithmetic expression evaluation in transition P system. We present the rules of arithmetic operation and the arithmetic of constructing arithmetic expression evaluation’s membrane structure based on the arithmetic operation rules. In the arithmetic operation rules, we use some specifically symbols to make rules applied in a maximally parallel manner, and also assure synchronization need during the rules application.
Inventory Management of Medical Equipment Vendors under the Uncertain Demand
Authors: Shi Lu , Ma Xin
Published: April 2011

The remarkable interest in the supply chain management related research in the last decade has been due to its potential to improve the efficiency of operations and reduce cost. Vendor managed inventory is an integrated approach for market patricians coordination according to which the vendor decides on the appropriate inventory levels within bounds. The coordination problem for a two stage supply chain composed of a medical equipment supplier and a retailer is considered in this paper. The inventory management of medical equipment vendors under the uncertain demand is analysis and the model is designed, the variables of shortage cost and inventories cost are derived on the two cases with the demand fluctuations and the results are also discussed.
Novel Recursive Construction Method for Resilient S-Boxes
Authors: Gao Sheng , Ma Wen Ping
Published: April 2011

Resilient S-boxes have many applications in quantum cryptographic key distribution, random sequence generation for stream ciphers, and fault-tolerant distributed computing. In this paper, we provide a novel method of constructing new resilient S-boxes from old ones. The proposed method is a simple modification on the recursive construction technique for resilient S-boxes due to Zhang and Zheng. The modified Zhang-Zheng construction has better performance since it increases the output dimensions of S-boxes, whereas having the same resiliency as the existing method. Using this new method, given an (n, m, t)-resilient S-box, one can construct an ((h+1)kn, (h+1)km, 2k(1+t) -1)-resilient S-box for all h = 2, 3,…, and k =1, 2,….
Research of Product Prototype Model
Authors: Xie Zhi Bin , Zhou Yue Xi
Published: April 2011

This paper uses the method of model production planning, various of models are woven in the whole product research progress of each link, R&D team should assess and adjust the real role the models playing in time according to the actual product research progress to prevent the model from overlapping in the course of researching and developing. When more broad overlay take place in different model functions, one model function will be reduce greatly when studying and using the function of making technological progress for reference from the previous model, so R&D team should adjust and change the progress of research and working content in time, and cut down production of some little value model prototype in right time and amount in order to raise the development efficiency, reduce research and develop cost.
The Algorithm for Graphic Method of Rain-Flow Counting in Programming
Authors: Deng Qing , Yuan Hong Jie
Published: April 2011

In this article, a new algorithm for rain-flow counting method in computer program is introduced. In the whole counting process, this algorithm entirely follows the principle of graphic method of rain-flow counting method, and so it can embodies the mechanical basis of extracting load cycle in rain-flow counting method; during the processing of counting, the information of every load cycle can be accurately recorded, such as starting and ending time, the time of peak or valley, the value of starting point and peak (or valley), mean value and amplitude. Besides, the counting result is in full accordance with the result from graphic method. Compared to four peak-valley method, this algorithm has shorter execution time and higher efficiency.