bluuebunny/crossref_metadata_2025 huggingface dataset:
Influences of Water Content on Compression Strength of Mortar
Authors: Ma Qiang , Wang Tao
Published: December 2010

Water content has important influences on the compression strength of mortar material. It is necessary to consider these influences when evaluate performances of mortar structures after flood soaking. This paper carried out experiments to explore the rule of water content’s effects on the compression strength of mortar. The results showed that 6 hours after the mortar in the soaking water content close to saturation, moisture content about 14%, after 6 hours the water content change little. Compression strength decreases rapidly after the mortar soaked. Finally, the mortar compression strength formula considering the effects of water content is regressed.
Experimental Study on the Wet Fly Ash Stabilized by Cement
Authors: Shi Wei , Chen Xiao Wen , Yang Jun Jie , Han Jin
Published: December 2010

Through unconfined compressive strength tests and triaxial compression tests made by sea water wet fly ash, fly ash solidified by cement, and the analysis with water wet strength of the material solidified fly ash formation mechanism, getting their basic mechanical properties and index. The results showed that curing water wet fly ash cement has good stability and durability, mixing curing mixture strength with age of stable growth, increased strength by adding cement content. The pilot research on the retaining structure, embankment reinforcement and ground improvement has important engineering applications such as theory and practice of value.
Analysis of the Damping Performance for Large-Span Steel Arch Structure with Buckling Restrained Braces
Authors: Li Xiao Dong , Wang Xiu Li
Published: December 2010

The application of Buckling Restrained Braces(BRBs) in the frame structure becomes mature, but relevant research hasn’t reported for application of steel arch structure with BRBs, so according to the large-span steel arch structure characteristics, puts forward BRBs to replace some braces of steel arch structure system, using finite element method, analyzes the damping performance for steel arch structure with BRBs and compares it with original under different excitation, results show that large-span steel arch structure with BRBs is provided with better damping performance.
Damage Model and Damage Mechanical Characteristics of Loaded Rock under Freeze-Thaw Conditions
Authors: Zhang Hui Mei , Yang Geng She
Published: December 2010

Considering the heterogeneous characteristics of rock at mesoscopic level, the damage propagation constitutive relation and evolution equation of freeze-thaw and loaded rock were established by using the theory of macro phenomenological damage mechanics and the generalized theory of strain equality. The evolutionary mechanisms of micro-structural damage and materials mechanical properties for the loaded rock were discussed under freeze-thaw condition, verified by experimental results of the freeze-thaw cycle and compression test of rock. It is shown that the freeze-thaw and loaded damage model can represent the complicated relations among the freeze-thaw, load and the damage inside the rock, reveal the coupling failure mechanism of macroscopic rock under the freeze-thaw and load from the micro-damage evolution. The combined effect of freeze-thaw and load exacerbates the total damage of rock with obvious nonlinear properties, but the coupling effect weakens the total damage. The lithology and initial damage state of the freeze-thaw and loaded rock in engineering structures in cold regions determine the weights of influence factors to mechanical properties, including environmental factor, loading factor and the coupling effects, so the rock performances different damage mechanical characteristic.
Effect of Vibrating Load on Grain Size Distribution of Crushed Rock Layer
Authors: Yang Li Jun , Bai Wen Hui , Sun Bin Xiang , Wang Shuang Jie , Zhang Jin Zhao
Published: December 2010

For the construction of the proposed Qinghai-Tibet Express Highway in warm and ice-rich permafrost regions, it will be necessary to utilize the new technique of cooling the ground temperature by the coarsely crushed rock layer with a low fines content, instead of the traditional measures taken to increase simply thermal resistances, so as to protect from damage to highway embankment due to thaw settlement. The vibrating loads such as wheel load and tamping load may cause the breakage and abrasion of the matrix grains in the coarsely crushed rock layer. This results in decreasing of grain size and increasing of fines content in the crushed rock layer, thus decreasing the porosity of crushed rock layer. The smaller porosity of crushed rock layer may weaken the cooling effect of buoyancy-driven natural convection of the pore air in the crushed rock layer of the highway embankment, thus resulting in instability and failure of the embankment structure in permafrost regions. Under these conditions, the influence of vibrating load on the grain size distribution of the coarsely crushed rock layer has to be investigated experimentally. In the present study, laboratory experiments on the grain size variation of the coarsely crushed rock layer under vertically vibrating loads were carried out. The test results show that the vibrating load can cause the breakage and abrasion of the matrix grains in the coarsely crushed rock layer and the shapes of coarely crushed rock grain tend to be non-angular.
Study on Micro-Structure Rebuild of Clay in Process of Consolidation
Authors: Li Shun Qun , Gao Ling Xia , Chai Shou Xi
Published: December 2010

Vacuum freeze drying method is applied to prepare samples for SEM from one-dimensional consolidation clay which suffered different pressures from original remolded state. And then simple and synthetical micro-structure parameters of SEM photos obtained from some section are studied to uncover relation between mechanics properties and micro-structure. The results tell us that the first principal component approximately linear increases with consolidation pressure. It is distinct that the synthetical parameters are superior to the simple parameters in construction soil mechanics relation because the former can reflect the whole micro-structure qualities, but the latter can not.
Effect of Aggregate on Drying Shrinkage of Concrete
Authors: Mu Ru , Tian Wen Ling , Guo Yong Gang
Published: December 2010

A modified version of an existing drying shrinkage model developed by the authors is proposed which incorporates the influence of the aggregate on the process of shrinking. Whereas it is traditionally thought that the aggregate restrains the deformation of the cement paste and hence the shrinkage of the concrete, in this paper, the effect of aggregate on shrinkage is better represented by considering the effect of the aggregate on moisture diffusion. It is suggested that the presence of the aggregate modifies the diffusion of moisture which governs the moisture loss and hence the drying of concrete. Also, as the volume fraction of the aggregate in a normal concrete is about 75% or more, the shrinkage of the cement paste is ‘diluted’ by the aggregate in the concrete. Taking into account these effects, this new diffusion based shrinkage model has been proposed. To assess the accuracy of the new model the shrinkage of two concrete mixes is predicted and compared with the measured shrinkage of these mixes. Comparisons are also drawn with the shrinkage predicted using the Model Code 1990 (MC90). It was observed that the new model proposed here predicts the shrinkage of the concrete mixes more accurately than the MC90 model, particularly at early ages.
Lateral and Local Stability of Steel-Concrete Composite Beam
Authors: Jiang Li Zhong , Qi Jing Jing , Zhou Wang Bao , Li Xing
Published: December 2010

Lateral buckling and local buckling are two important influential factors for bearing capacity of a steel-concrete composite beam. The existing codes of a steel-concrete composite beam generally use steel structure design methods to calculate stability of a composite beam, and the results do not agree with the fact. This paper analyses global lateral buckling forms of I shape steel concrete composite beam and a calculation model of I shape composite beam stability analysis is presented. The critical moment of lateral buckling of the composite beam compressive bottom flange in the hogging bending moment region is derived in accordance with computation module. The author also studies the mechanical property of the steel web under combined action of bending stress, axial compressive stress and shear stress in the hogging bending moment region. In the light of correlation equation under combined eccentric compression and shear force, an elastic buckling factor of the steel web in complicated stress state is obtained. Based on buckling analysis results, a height to thickness ratio of steel beam in the elastic strained stage without transverse stiffening rib is proposed. Compared with existing stability theory and calculation method of I shape composite beam, correction methods and advices of stability design for I shape composite beam in the hogging bending moment region are presented.
Experimental Study of Mineral Polymer Made from Iron Tailing
Authors: Nie Yi Miao , Xia Mao Hui , Zhang Jin Xia , Liu Shu Xian , Cui Xu Cheng
Published: December 2010

Iron tailing is a kind of waste after extracting iron element. It caused a series of environmental problems. In this paper, it was used to make mineral polymer. After activation of it, the product compressive strength reached 70.46MPa when the dosage of iron tailing was 70%, sodium hydroxide 50% and the solid-liquid ratio was 0.4. This experimental study provides a good basis for the utilization of iron tailing.
Study of Constitution Relationship Model for Masonry under Axial Compression
Authors: Liu Wei , Tong Li Ping , Xu Peng
Published: December 2010

Based on the study of the unclear mechanical behavior and failure mechanism of masonry components in high axial compression after Wenchuan Earthquake, the thesis analysis the failure mechanism of masonry in compression in microscopic hierarchy process level with the damage mechanics and probability and statistics method. Aimed at making up the shortage of that it is difficult for the previous constitution relationship model to identify the difference between the stress decrease of the material when loading during strain softening stage and the stress decrease of the material when unloading during the elastic stage, the thesis studies the constitution relationship model for masonry in strain space and describes the strain hardening and softening phenomena during the force process of the components with a uniform loading and unloading standard, and avoids the uncertain description on the strain softening stage. Approved by the experiments, the model can show the characters of the compressive masonry experiment, and give a reasonable explanation for the deformation principle of masonry in compression at the micro-level, also fit the experiment results well.
Identification of Nonlinear Structural Parameters under Unmeasured Excitation
Authors: Lei Ying , Wu Yan , Li Tao
Published: December 2010

Recently, detection of structural damage based on the system identification has received great attention. In this paper, a technique is proposed for the identification of nonlinear structural parameters under unmeasured excitation. The identification algorithm is based on the extended Kalman filter for the extended state vectors including nonlinear parameters and the recursive least squares estimation for the unknown inputs. Two different models are used to simulate nonlinear structures: One is a 4-storey Duffing-type nonlinear elastic shear-frame structure, the other is a 4-storey Bouc-Wen hysteretic shear-frame structure.Two numerical examples are carried out on the two kinds of models. The simulation results demonstrate that the proposed approach is capable of identifying the nonlinear structural parameters and unknown inputs with good accuracy.
Numerical Simulation on Influence of Thermal and Moisture Parameters on Concrete Deformation
Authors: Liu Chun Lin , Qian Chun Xiang , Chen De Peng
Published: December 2010

Failures in concrete elements and structures often result from simultaneous effect of heat and moisture in concrete or form environment. Numerical simulation is an efficient way for investigating concrete deformation and the thermal and moisture parameters are the essential inputting data in simulation. Obviously, the numerical deformation of concrete will change with the varying thermal or moisture parameters which result from the materials and mix ratio used in preparing the concrete. The influences of hygro-thermal physical parameters on the deformation of concrete were investigated numerically using a specially developed software, which is named Coupling Temperature and Moisture Simulation System for concrete (CTMSoft) in this paper. The results of numerical experiment imply that evaluating the influence regularity of only a single parameter on the concrete deformation is unscientific and the coupling effect should be considered in the fact that there is not a definite relationship between concrete deformation and a single parameter.
Preparation and Properties of OMMT/ SBS Modified Bitumen
Authors: Han Nian Feng , Zhou De Jie , Tang Xin De
Published: December 2010

Organophilic montmorillonite (OMMT)/SBS modified bitumen composites were prepared by melt intercalation. The physical properties and ageing properties of OMMT/SBS modified bitumen were investigated. The results showed that OMMT/SBS modified bitumen exhibited a decreasing penetration, an increasing softening point, and a decreasing ductility. Compared with that of SBS modified bitumen, the OMMT /SBS modified bitumen can enhance the aging resistance of SBS modified bitumen.
Numerical Simulation for the Thermal Stress of Composite Wall Insulation System
Authors: Cheng Tao , Yan Ke Qin
Published: December 2010

This paper presents the thermal stress characteristics of polystyrene plate - thin plaster wall. Based on thermal stress analysis module of ANSYS software, a three-dimensional element solid5 is selected to mesh the wall model, which can simulate the coupling effects of thermal stress and structural stress field. The critical temperature of hot and cold cycles is taken as the critical temperature condition, which is imposed on the calculation model. Windowless Wall and window wall were modeled separately. Temperature field, thermal stress, and deformation distribution were proposed after comparing and analyzing the two simulation results. Numerical simulation results indicate that: (1) Whether in high or low temperatures, window or windowless, polystyrene plates thin plaster wall insulation system has very good thermal insulation properties；(2) Polystyrene plate - thin plaster wall insulation system is influenced by the temperature stress. Different stress fields concentrate significantly around windows and in the middle of wall especially around the windows. In fact, it is relatively same as the law of cracks around the windows.
Study on Consolidation Technology for Municipal Waste and Its Safety
Authors: Sun Jia Ying , Xu Yi Dong
Published: December 2010

To tackle the annually increasing amount of municipal waste, this paper proposes a new consolidation technology to consolidate stale municipal waste, and elaborates on the consolidation effect and safety. Research results demonstrate that 28-day strength of municipal waste consolidation can be up to more than 38 MPa by this consolidation technology. Thus consolidation durability is better in terms of resistance to freezing, water, dry-wet circle and sulfate erosion. Meanwhile, its amount of leaching-out solidified heavy metal meets the requirements of national standard in China, in other words, heavy metal ions are effectively bound and stably solidified.
Simulation Investigation for Heat Transfer in Fin-Tube Thermal Storage Unit with Phase Change Material
Authors: Long Jian You
Published: December 2010

This paper addresses a simulation investigation of a fin-tube thermal storage unit involving phase change process dominated by heat conduction. The heat transfer of fin-tube thermal storage unit with phase change material (PCM) was simulated by Fluent. Graphical results including outlet temperature of heat transfer fluid (HTF), average temperature of PCM and phase front interface of solid and liquid phase of PCM versus time and fin distance were presented and discussed. According to simulation results, it was concluded that only the fin-tube thermal storage unit with fin distance of 12fin/inch could satisfied the request of heat release performance of household heat pump water heater for shower.
The Optimization Model of Insulation Material of External Wall Based on Multi-Attribute Generalized Connection Degree
Authors: Wang Ming Wu , Chen Guang Yi , Ge Kang , Yang Jiang Feng
Published: December 2010

The optimization of insulation material of external wall is a multi-attribute uncertainty decision-making problem. Herein based on theory of multi-attribute decision making, a novel decision-making model using generalized connection number of set pair was discussed to solve the problem. Namely, the certainty and uncertainty relationship between the evaluation plan and the optimal plan or the worst plan for the optimization of insulation material was described by means of identical-contrary analysis of set pair theory. And a generalized connection degree was introduced to evaluate comprehensively the relative membership degree of the evaluation plan to the optimal plan. The results from a practical example show that the proposed model used to select the plan of insulation material is feasible and reliable, and easy to operate.
Effect of Desulfurization Ash with Different Desulfurization Temperature and Gypsum Content on the Fluidity, Strength and Rebar Protection of Cement Based Materials
Authors: Wen Xiao Dong , Li Guo Song , Song Jiu Yong , Gao Zhi Nan
Published: December 2010

Depending on the desulfurization reaction temperature，it can be divided into fly ash generated at high-temperature furnace zone and at low-temperature flue gas zone. For simulating those two kinds of desulfurization ash, the ordinary fly ash mixed with different weight percentage of CaSO4•2H2O is divided into 2 groups, the first group is followed by calcining at 900 , another drying at 100 . And then by the experiment of workability, strength and steel rebar protection, the effect of morphology and amount of gypsum on material properties and the pretreatment method are studied. The results show that: compared with ordinary fly ash, those two kinds of desulfurization ash can improve workability, but the improving ability of desulfurization ash at high-temperature furnace zone weaker than another’s, in addition, amount of gypsum in desulfurization ash on fluidity has a threshold; Secondly, desulfurization ash can decrease strength, and the early strength of desulfurization ash at high-temperature furnace zone higher than another’s, but the development trend of later strength is in the opposite direction. Thirdly, those two kinds of desulfurization ash are harmless for steel rebar, and the steel rebar’s passive film compactness is followed desulfurization ash formed at low-temperature flue gas zone＞desulfurization ash formed at high-temperature furnace zone＞ordinary fly ash.
Experiment Study on Uniaxial Properties of PVC Membrane Material
Authors: Zhou Chuan Zhi , Zhang Qi Lin , Zhang Ying Ying
Published: December 2010

Uniaxial tensile tests of PVC membrane are carried out at seven kinds of temperature. The change law of tensile strength, strain at break and the Young’s modulus at different temperature are obtained from the tests. The results indicate with the increase of the test temperature, the tensile strength decreases while the tensile strain at break increase, but the load-deformation curve trends are similar. By using molecular break theory, the fitting formulas are proposed to predict the effect of temperature on tensile strength. In addition, the cycle loading tests were carried out in three different phases. This paper studies the residual strain and the elasticity change of the PVC membrane during the test. The results indicate PVC membrane is typical elasto-plasticity material. With the increase of cycle loading the residual strain increases.
The Information Fusion Method Based on a Sort of Multiple Pseudoframes with Arbitrary Real Translation Constant
Authors: Chen Qing Jiang , Chang Miao
Published: December 2010

Wavelet analysis has been a powerful tool for exploring and solving many complicated problems in natural science and engineering computation. The definition of multiple pseudofames for subspaces with real number translation is proposed. The notion of a generalized multiresolution structure (GMS) of is also introduced. The pyramid decomposition scheme is derived based on a GMS. As a major new constribution the sufficient condition for the existence of multiple pseudoframes for subspaces is derived based on such a GMS.
Research on Ontology-Based Semantic Reasoning
Authors: Song Lan , Lei Li Xia , Wang Hong , Hua Jun Hong
Published: December 2010

As a new emerging web, semantic web, has recently drawn considerable attention from both academic and industry field. Nowadays, RDF, RDF Schema, OWL etc. have become commonly used languages in the Semantic Web. This paper describes the ontology language and description logic, shows the relationship of them, and finally presents a reasoning path for transitive closure in an ontology document.
Dominant Factors of Central Air Conditioning System Zoning and Thermal Comfort for Large-Scale Public Buildings in China
Authors: Cai Wei , Cai Ke Jian , Wu Zhao Hui
Published: December 2010

Large-scale public buildings have high energy density, which take big part of the gross energy consumption in buildings in China. It is still in attempting stage about the strategy of energy conservation in air conditioning systems. The objective of this study is to investigate that how to appropriately divide central air conditioning system zoning by using simulation software to calculate the basis dynamic temperature and load in typical large-scale public buildings. Effects of weather conditions, building envelope conditions and building structure on large-scale public building energy consumption were analyzed in this simulation. The results show that the building load is the fundamental factor involved in air conditioning system zoning. Surplus heat recovery in inner zone is also recommended to maintain inner zone comfort and energy conservation. This work provides the theoretical and technological basis for study on central air conditioning system zoning and thermal comfort for large-scale public building.
Studied on Return Water Temperature of Buried Pipe and Soil Temperature Field of Soil-Source Heat Hump System by the Finite-Element Method
Authors: Liu Guo Dan , Liu Fu Sheng , Meng Dan , Li Xu Quan , Shi Zhi Gang , Wang Gang
Published: December 2010

Heat transfer model of buried pipe heat exchanger is established first, and solved by the ANSYS finite element simulation software. Model is verified by experiment, average error is 6.4%. On the above basis, return water temperature of buried pipe and soil temperature are analyzed during whole operation. Through whole cooling season, outlet water temperature of buried pipe increased by 6.7°C, up to 21.2°C. After 45 days on transition season, temperature reduced 3.2°C, up to 18°C. Within one year, temperature difference is above 1.1°C before-and-after heating and cooling operation. It reveals that soil temperature cannot fully recover only by natural heat conduction and soil heat storage appears, which should be paid more attention in the project.
The Evaluation of IT-Based Teaching Abilities Based on Niche Theory
Authors: Zhang Hui , Zhang Yi Chun
Published: December 2010

In order to give a scientific evaluation for teachers’ IT-based teaching abilities, an index system and a set of quantitative analyzing methods are put forward in this paper based on niche theory. By introducing the attributes about teachers’ “ecostate” and “ecorole”, the niche of IT-based teaching abilities is divided into four dimensions: tools and applications, resources and management, instruction and design, performance and development. According to these analyses, an evaluation index system and computational formulas are constructed. At last, in view of the curve of teachers’ “ecostate” and “ecorole”, the principle of teachers’ career development and concerning suggestions are presented. For teachers and schools, this method could work as a model to identify and evaluate IT-based teaching abilities properly.
Ethanol Production from Corn Stover Using Soaking Pretreatment
Authors: Zuo Zhuang , Yang Xiu Shan
Published: December 2010

Corn stover was pretreated using different soaking conditions at mild temperature. Among the tested conditions, the best was 1% NaOH+8% NH4OH，50°C，48 h, Solid-to-liquid ratio 1:10. The results showed that soaking pretreatment achieved 63.6% deligniﬁcation, retained the xylan and glucan. After enzymatic hydrolysis, conversion rates of xylan and glucan were 70.9% and 78.5%, respectively. The pretreated filtration re-soaking cause 52.7% xylan and 65.0% glucan conversion. NaOH+NH4OH treatment can be performed under mild conditions, gives a good buffering effect, low carbohydates degradation and extensive removal of lignin. Additionally, simultaneous sacchariﬁcation and fermentation was conducted with pretreated corn stover to assess the ethanol production. For the whole process, 0.15g ethanol /g corn stover was achieved using Saccharomyces cerevisiae Y5, and 0.19g ethanol /g corn stover when using Pichia stipitis.
Research on Calculating Productivity of Multilateral Horizontal Gas Well with Wellbore Pressure Drop
Authors: Yin Hong Jun , Cai Ming , Chen Xiao Qi , Lv Hang
Published: December 2010

According to the characteristics of multilateral horizontal well, by using pressure superposition and mirror image reflection theory, the mathematical model of steady percolation for multilateral horizontal well in bottom water drive gas reservoir is developed on the basis of a three-dimensional pseudo-pressure distribution model for horizontal gas wells. The wellbore model is formulated in consideration of friction loss and acceleration loss. After a case study with couple models, the effect of wellbore pressure drop on productivity of multilateral horizontal gas well is analyzed.
Normal Operational State Results of Integral Pressurized Water Reactor by Using Relap5/Mod3.4
Authors: Ud Din Khan Salah , Peng Min Jun , Zubair Muhammad
Published: December 2010

In this paper, a research has been carried out on the normal operational state of IPWR by using the thermal hydraulic system code Relap5/Mod3.4.In this study the conceptual study analysis of the reactor named as Inherent Safe Uranium Zirconium Hydride Nuclear Power Reactor INSURE-100 is considered but is only based on the conceptual study so the current research focuses on the normal operational of the reactor by using the Relap5/Mod3.4 code. For this purpose, two passive safety methods have been included for the safe operation as well as for transient analysis of the reactor. In the first one, Passive Residual Heat Removal System (PRHRS) has been modeled by taking the heat exchanger out of the Reactor Pressure Vessel (RPV) in the water tank so that it can absorb core decay heat in case of transient conditions and in the second one heat exchanger is placed both in inside and outside the RPV so that there can be another way to absorb the core residual heat. Considering these concepts figured out the normal operational state of the reactor by using Relap5/Mod3.4 in comparison with the conceptual design study of the reactor under consideration and the results extracted can be a good agreement for the transient analysis of the reactor.
Loss of Feed Water Accident in an Integral Pressurized Water Reactor (IPWR)
Authors: Ud Din Khan Salah , Peng Min Jun , Zubair Muhammad
Published: December 2010

In this paper research has been carried out on Loss of Feed Water Accident (LOFW) scenario of the Integral Pressurized Water Reactor ( IPWR) under two circumstances by the use of thermal hydraulic system code i.e Relap5/Mod3.4. In the first one, Passive Residual Heat Removal System (PRHRS) which is designed to absorb core residual heat in case of transient conditions is included which has the function of operating under the accident vulnerabilities. Concerning with the second case i.e without the use of PRHRS rather a tank of water which has the capacity of about 8% of the total feed water supply and is operated under accident scenario is considered. Taken into account these conditions,first the nodalization diagram of the two cases have been figured out then according to the LOFW accident time event scenario use the Relap5 code to simulate the accident. Finally the graphical explanation (separately) of the two cases with graphical approach as well as the conclusion is given at the end.
Research on the Technology of No-Load Cutting-in Control of Doubly Fed Induction Wind-Power Generator Based-on Fussy PI Controller
Authors: Lu Xiu He , Wei Yong Qiang
Published: December 2010

The methods of vector transform and PI controller are used in no-load cutting-in control scheme of the system of doubly fed induction wind power generator, but the control methods depend on the parameters of electronic machine strongly. For raising the steady of wind power generating system, this paper designs a fuzzy PI controller which with strong robustness and fast dynamic response of fuzzy controller and better steady precision of PI controller. The result of simulation indicates that the fuzzy PI controller not only shorts the process of no-load cutting-in, but also has strong robustness and fast dynamic response, it is an ideal cutting-in control strategy.
Quality of Work Life and Employee Outcomes: A Survey of Employees in Hotel Business
Authors: Ma Yan , Ma Qin Hai , Yu Hao , Hao Jin Jin
Published: December 2010

In this paper, we discussed the relationship between Quality of Work Life and employee outcomes in China. We used organizational commitment and organizational citizenship behavior (OCB) to reflect employee outcomes. By employing several statistics techniques, such as factor analysis, reliability and validity analysis, the data of questionnaires has been analyzed. The results show that there is a significant positive relationship between QWL and all the indicators of employee outcomes (Organizational Commitment and OCB).
Transfer of Electricity in Energy Engineering
Authors: Li Jie
Published: December 2010

This paper aims to suggest and research a revolutionary method-transfer of electricity in outer Space with distance of hundreds of millions kilometers by ultra-cool plasma cables. Theory of plasma cable transferring is offered, developed and its possibilities researched. Offers conclusions from the research of a revolutionary new idea-transferring electric energy in the hard vacuum of outer space wirelessly, using a plasma power cord as an electric cable (wire).Transference of hundreds kilowatts of energy to Earth’s Space Station, transferring energy to the Moon or back, transferring energy to a spaceship at distance 100 million of kilometers, the transfer energy to Mars when one is located at opposite side of the distant Sun, transfer colossal energy from one of Earth’s continents to another continent wirelessly – using Earth’s ionosphere as cable, using Earth as gigantic storage of electric energy, using the plasma ring as huge MagSail for moving of spaceships.
Realization of Adaptive Learning Content Based on Learning Object and Domain Ontology
Authors: Wei Xu
Published: December 2010

With the evolution of information technology, E-learning has spread rapidly. Traditional E-learning has proved not fit requirement of modern education, new trend of developing the adaptive and customized E-learning system draws more and more attentions from researchers and practitioners. In this paper, we proposed an E-learning system which can provide adaptive content according to different situations of user. To achieve the adaptive E-learning system, two new technologies have been adopted by the system: learning object and domain ontology. Using these two technologies the system can provide intelligent learning content based on the user’s context, knowledge’s context. The paper also presents a scenario to demonstrate the step of production of adaptive learning content.
A Data Cooperative Caching Policy Using Human Mobile Patterns for Delay Tolerant Networks
Authors: Ye Hui , Chen Zhi Gang , Shen Xiao Jian
Published: December 2010

Recently, many researchers focus on delay tolerant networks (DTN). In DTN, the mobile characteristic of nodes is used to help transfer data. Therefore, how to use the cooperative relations and cache resource of nodes effectively to avoid network congestion and improve network performance is an important issue. In this paper, we proposed a cooperative caching policy based on human mobile patterns, which referred as HMP-Cache. The node movement characteristics are discussed in detail in HMP-Cache. HMP-Cache uses the standard of target address matching to choose cooperative caching nodes. In addition, the sharing caching information is done by synchronization of caching table in local region. Therefore, the impact of useless data dissemination of multiple hops is reduced. And the shortcoming of limited caching resources is compensated. The simulation results show that our policy can control the network cost effectively. Also, the remote data latency is reduced.
Research on the Heterogeneous Data Integration Platform Based on Extended ETL and Data Federate
Authors: Ma Jiang , Gao Lei , Ding Ai Hua
Published: December 2010

After analyzing the main way of data integration , a compound solution based on extended ETL and data federate is advanced to integrate heterogeneous data and build shared data center. Research shows that the new method can not only guarantee real-time property of data transmission、decrease spending, but also remove bottleneck as well as potential safety hazard and improve the overall performance.
The Design of Multi-Level Interrupt Virtual Experiment Based on Object-Oriented
Authors: Wang Zhi Hui , Hao Shang Fu , Wang Yuan Qiang
Published: December 2010

The virtual reality technology is a three-dimensional virtual environment composed by computer hardware, software and various of sensors. It creates an unprecedented wealth of content and more fantastic teaching environment which reflects strong advantage in experiment and practice. In accordance with the needs of experiment teaching, multi-level interrupt virtual experiment environment is studied combining with the characteristics of its principle. The experiment environment is based on Tec-xp test box designed and developed by Tsinghua University computer factory. Microsoft Visual C++6.0 language is adopted for software platform development. Seen from the system needs analysis, object-oriented simulation method is adopted for modeling in this experiment environment. Meanwhile combining with computer system features and the characteristics of Computer Organization Principle teaching, the basic theory and methods of discrete event system simulation are used, which make the operation of virtual environment the same as on real device.
Characteristics of Central Vertical Tubes of the Gravity Film Exchanger in Hybrid GSHP and UTES Systems
Authors: Yin Yong Lan , Gao Qing , Zhu Bai Fa , Li Ming
Published: December 2010

As key factor to the heat transfer efficiency of the gravity film exchanger, the wave characteristics of gravity films were studied in the experimental setup. The water from the high level storage tank flowed down the vertical circular tube to form the gravity films. The images of the gravity films were captured with the aids of the plane light source and the high speed image technology, and recorded in computers in real time. With the image processing software, the wave profiles varied with time and the height of the tube were both shaped from the images of film thickness fluctuations. The experimental results showed the significant effect of the film Reynolds numbers on the wave characteristics in various positions of the vertical tube. The probability density distributions of the film thickness were also analyzed for different Reynolds numbers.
The Path Analysis of Innovation Networks Construction of China's Equipment Manufacturing Industry Cluster
Authors: Qiao Bin , Liu Wen , Xiang Ting
Published: December 2010

According to the current situation and characteristics of China's equipment manufacturing industry, this paper thinks that the development path of China's equipment manufacturing industry is to construct the network of equipment manufacturing industry cluster innovation. It’s a system to construct China's equipment manufacturing industry cluster innovation network, which need to improve enterprise integration capabilities through the establishment of the network of main business leaders, focus on building innovative platform network and also need collaboration of system and environment to support network. On this basis, this paper analyzes construction strategies of the innovation network of industry cluster.
Fuzzy Comprehensive Evaluation of Graduate Education Quality Based on AHP
Authors: Si Yan , Chao Na , Ma Xiao Qing
Published: December 2010

Based on ahp, the fuzzy mathematical theory, combined with the background knowledge has established the postgraduate education quality analytic hierarchy model, and using this model study postgraduate education quality evaluation question. Take the graduate student factor, the teacher factor, the school factor and the external factor as the foundation variables ,has established the usability fuzzy evaluation indexes of membership functions ,integrating the analytical hierarchy process (ahp) gives evaluation criteria on the relative weight of evaluation target, finally uses the fuzzy comprehensive evaluation method to give the scientific evaluation to the graduate education quality.
Construction and Analysis of the Structural System of Basketball Competition Process
Authors: Gao Ping , Hu Yi Hai , Yu Yin
Published: December 2010

By using the methods of literature, expert surveys, statistics and logical analysis, this essay has constructed and analysised the structure of basketball competition process,and took the structural elements as platform, in order to comprehensive understand the competition process of basketball games and the features of related work,provide the theoretical basis for cientific training and competition.
The Average Message Complexity Analysis for Different Distributed Mutual Exclusion Site-Tolerant Ways
Authors: Li Mei An , Li Wei , Ma Dong
Published: December 2010

Many schemes have been proposed to implementation the distributed mutual exclusion. All those algorithms or schemes can be dived into two types based on the fault-tolerant operation. To any type algorithm, the size of the intersection of any two quorums will impact the number of average messages exchanged per Critical Section (CS) execution importantly if the sites are not always operational. In this paper, Basing on the discussions about the average messages in different cases of different algorithms, we get the average messages in the two types algorithm have the same monotony properties to k. and when N and k are all constants, the average messages functions are monotony descend to p. The average messages are more when k=1 than k=N if p is small enough. The minimum of the average messages is When p=1.
The Impact of Disciplinarity on the Career Patterns of Department Chairs: A Comparison between American CSU and Chinese NCEPU
Authors: Zhang Li , Wu Zhi Gong
Published: December 2010

Based on career study and the disciplinarity in higher education administration, this paper intends to explore the variations of the career patterns of department chairs from differential disciplines. Taking American California State University(CSU) and Chinese North China Electrical University (NCEPU) as examples, it examines the simiarities, differences and limitations related to the overlooking of disciplinarity in regard to choosing of candidates, hiring mechanism, motivation and retention, training program, and post-chair stage. The conclusion is to highlight how university policies can assist chairs during their service: improving recruitment, training, and retention of chairs with the end of making them more enduring and effective leaders of their departments.
The Impact of International Hot Money in International Commodity Future Markets during the Subprime Mortgage Crisis
Authors: Ye Qing , Han Li Yan
Published: December 2010

Behavior of traders including investors and speculators in commodity future markets are studied before and after the subprime mortgage crisis. We put our attention on quantity of traders hold positions instead of price volatility or capital return rate of commodity future markets. By standardize correlation coefficients of net positions we try to quantify the impact of speculative funds on behalf of international hot money in international commodity futures markets in the subprime mortgage crisis. Parametric and non-parametric tests are used in this paper. The empirical results reveal that investment directions of speculators do change in crisis and they connect more tightly with markets compared with investors for that their find more opportunities and higher return rate during the Subprime mortgage crisis.
The Research on the Universities Counselor’s Profession and Competence
Authors: Zhu Hong Chun , Zhou Zhi Gang
Published: December 2010

In the investigation of the universities counselor’s contradiction and bepuzzlement in work and competence, this paper obtain the following results by sample survey of counselors and statistical analysis of profession and competence. Counselors own identity on their career will affect the counselor’s ability. The awareness of the importance of counselor’s ability is by the impact of different occupations. And the difference of this understanding in turn will affect the career development of counselors. The development law of the universities counselor’s profession and competence is explored. According to the analysis and the research, a scientific evaluation system for counselor’s ability is established, which is consistent with the needs of counselors, and is the key to building professionalism for the counselors.
Using Business Intelligence in Supply Chain Management
Authors: Jiang Wen Rong , Chen Jian
Published: December 2010

The paper defines the connotation and technology of business intelligence, discusses its concrete applications in supply chain management and studies the rules that the enterprises should follow while using business intelligence software. Through integrating the Business Intelligence with supply chain management, these problems can be solved effectively.
Software Design of Vice-Steering System for Learner-Driven Vehicle
Authors: Zhang Wei Chun , Pei Bao Hao , Chen Jie , Yu Peng , Ma Bing Bing , Du Xian Bin
Published: December 2010

A structure form is used by one vice-steering system software design for learner-driven vehicle, which combines software polling and interruption with subroutine call, namely a form of main program polling and interrupt service subroutine. Among them, main program mainly realizes the system initialization. Interrupt service subroutine is mainly used to sampling vehicle speed and the engine speed, etc.
Culture and Identity in Higher Education Research: Disciplinary Culture and Institutional Culture
Authors: Zhang Fu Lei
Published: December 2010

The purposes of this article is to develop a cultural approach in higher education studies. It will be argued that the cultural approach is rooted mainly in two different intellectual starting points to analyze academic communities as cultural entities: studies of disciplinary cultures and institutional cultures. Notions of disciplines as cultural entities have been developed in Europe in relation to the “two cultures” topic and to issues developed in the sociology of knowledge. The institutional studies tradition is, in turn, rooted in the American intellectual tradition, where cultural concerns emerge from institutional level phenomena whether they concern students, faculty or higher education institutions. The article discusses the pros and cons of these traditions in order to find new avenues for future research. It will be argued that academic identity provides a seminal perspective for cultural studies in higher education.
Heat Transfer Characteristic Analysis of Confined Impinging Jet Cooling System with Micro-Scale Round Nozzles
Authors: Wang Chang Hong , Chen Ying , Tu Juan
Published: December 2010

In order to investigate the heat transfer of confined impinging jet with tiny size round nozzle, a bakelite laminate was used as the heat transfer surface of simulated chip. The thermocouples were mounted symmetrically along the diagonal of the laminate to measure the temperature distribution of the surface. The parameters such as Reynolds number (Re) and ratio of height-to-diameter were changed to investigate the radial distribution of Nu and the characteristics of heat transfer in stagnant section. The results show that hear transfer coefficient at stagnation point is maximal. It is decreased with the increases of the radial jet distance, but increased with Re and impinging height. Moreover, the effect of single-nozzle type is stronger than that of multi-nozzle type in the cases of same air flow. These studies will give a way for the application of air jet impingement in the electronics chip cooling.
Evaluation of Static Performance of Optoelectronic Semiconductor Devices under X-Rays Irradiation
Authors: Amir Haider F. Abdul , Chee Fuei Pien
Published: December 2010

In this research, optoelectronic devices consisted of an infrared light emitting diode and a phototransistor with no special handling or third party-packaging were irradiated to ionizing radiation utilizing x-rays. It was found that the devices under test (DUTs) undergo performance degradation in their functional parameters during exposure to x-rays. These damaging effects are depending on their current drives and also the Total Ionizing Dose (TID) absorbed. The TID effects by x-rays are cumulative and gradually take place throughout the lifecycle of the devices exposed to radiation.
Synthetic Hydrotalcite Prepared from Modified Combustion Method Using Glucose as Fuel
Authors: Othman M.R. , Martunus Che , Fernando W.J.N.
Published: December 2010

Hydrotalcite (HT) like compounds were successfully synthesized from combustion method using aluminum and magnesium nitrates, and potassium carbonate as solid precursors. Glucose was used as solid fuel to facilitate the reaction into mixed oxide and later HT structure at different combustion temperature. The combusted product initially formed disordered mixed oxides, but later returned to its original, more ordered HT state after being in contact with carbonate solution as analyzed from XRD. SEM analysis showed that the sample's microstructure was more orderly packed, less granular and more refined than its mixed oxide counterpart. The EDX analysis showed that the elemental potassium was the strongest energy binding in the hydrotalcite network followed by Al, Mg, O and C.