bluuebunny/crossref_metadata_2025 huggingface dataset:
Fixed Boundaries Receptance Coupling Substructure Analysis for Tool Point Dynamics Prediction
Authors: Mancisidor Iker , Zatarain Mikel , Munoa Jokin , Dombovari Zoltan
Published: April 2011

In many applications, chatter free machining is limited by the flexibility of the tool. Estimation of that capacity requires to obtain the dynamic transfer function at the tool tip. Experimental calculation of that Frequency Response Function (FRF) is a time consuming process, because it must be done using an impact test for any combination of tool, toolholder and machine. The bibliography proposes the Receptance Coupling Substructure Analysis (RCSA) to reduce the number of experimental test. A new approach consisting of calculating the fixed boundary dynamic behaviour of the tool is proposed in the paper. This way the number of modes that have to be considered is low, just one or two for each bending plane, and it supposes an important improvement in the application of the RCSA to the calculation of stability diagrams. The predictions of this new method have been verified experimentally.
Modeling the Varying Dynamics of Thin-Walled Aerospace Structures for Fixture Design Using Genetic Algorithms
Authors: Meshreki Mouhab , Attia Helmi , Kövecses József
Published: April 2011

Fixture design for milling of aerospace thin-walled structures is a challenging process due to the high ﬂexibility of the structure and the nonlinear interaction between the forces and the system dynamics. At the same time, the industry is aiming at achieving tight tolerances while maintaining a high level of productivity. Numerical models based on FEM have been developed to simulate the dynamics of thin-walled structures and the effect of the ﬁxture layout. These models require an extensive computational effort, which makes their use for optimization very unpractical. In this research work, a new concept is introduced by using a multi-span plate with torsional and translational springs to simulate the varying dynamics of thin-walled structure during machining. A formulation, based on holonomic constraints, was developed and implemented to take into account the effect of rigid ﬁxture supports. The developed model, which reduces the computational time by one to two orders of magnitude as compared to FE models, is used to predict the dynamic response of complex aerospace structural elements including pockets and ribs while taking into account different ﬁxture layouts. The model predictions are validated numerically. The developed model meets the conﬂicting requirements of prediction accuracy and computational efﬁciency.
Optimization of High Speed Machine Tool Frames
Authors: Kosmol Jan , Wilk Piotr
Published: April 2011

The article presents elaboration of problems pertaining to the evaluation of design variants of machine tool frames. The presented method has been implemented in the optimization process of geometrical parameters of frames, such as: dimensions, thickness and layout of walls. The solution obtained as the result of optimization process has been compared to the ideal variant, which in this case was a machine tool with frames suggested by the designer.
Optimization of Process Parameters in CFRP Machining with Diamond Abrasive Cutters
Authors: Boudelier Aude , Ritou Mathieu , Garnier Sebastien , Furet Benoît
Published: April 2011

The present paper proposes a methodology to optimize process parameters for trimming applications with diamond abrasive cutters. This methodology is based on the study of quality of trimmed surface, through material integrity and surface roughness, and on the study of cutting mechanisms. Their evolutions according to tool parameters and cutting conditions have been analysed. Results show that diamond grits size must be chosen according to the required surface roughness. Feedrate must respect cutting limitations due to CFRP removal mechanisms with abrasive cutters, which have been identify through analyses of specific cutting energy. Finally, a protocol in two steps is proposed to determine the optimum process parameters according to the application. Firstly, constraint functions due to respect of quality and to limiting cutting phenomena are defined. Thus, limiting values of process parameters are determined. Then, process parameters are selected in order to optimize productivity.
Effects of the Cutting Tool Edge Radius on the Stability Lobes in Micro-Milling
Authors: Afazov Shukri , Ratchev Svetan , Segal Joel
Published: April 2011

This paper investigates the effects of the cutting tool edge radius on the cutting forces and stability lobes in micro-milling. The investigation is conducted based on recently developed models for prediction of micro-milling cutting forces and stability lobes. The developed models consider the nonlinearities of the micro-milling process, such as nonlinear cutting forces due to cutting velocity dependencies, edge radius effect and run-out presence. A number of finite element analyses (FEA) are performed to obtain the cutting forces in orthogonal cutting which are used for determining the micro-milling cutting forces. The chip morphology obtained for different tool edge radii using FEA is presented. It is observed that at large tool edge radii the influence of the ploughing effect become more significant factor on the chip morphology. The results related to micro-milling cutting forces and stability lobes show that by enlarging the tool edge radius the micro-milling cutting forces increase while the stability limits decrease.
Simulation of Serrated End Milling Using Solid Modeling Techniques
Authors: Hosseini Ali , Moetakef Imani Behnam , Kishawy Hossam A. , El Mounayri Hazim
Published: April 2011

Rough end mill tools with serrated cutting edges profile are extensively used for removing a bulk of material and suppressing the chatter vibrations during milling operations. The serrated profile of cutting edge has phase shift from one flute to the next and interfere with the regeneration of waviness of the cut surface. In this research, serrated cutting edges are analytically defined and geometrically modeled as a NURBS curve. In addition; the chip load on the serrated cutting edges is calculated by a newly proposed algorithm. The validity of the algorithm is investigated by applying solid modeling techniques using ACIS 3D solid Modeler. In order to validate the results, several experiments were performed by utilizing serrated end mill. Verification of simulated and experimental results shows that the developed algorithm can be effectively implemented to simulate the cutting force for any geometry of milling tools as well as serrated end mills.
Optimization of Non-Cutting Tool Paths
Authors: Denkena Berend , Böß Volker , Hoppe Patryk Manuel
Published: April 2011

The focus of CAM systems is on effectively creating cutting tool paths. However, collision risk is very high on multi axes machines when performing non-cutting traverse moves. If available, CAM systems offer limited setting options for non-cutting tool moves. In this paper an approach is presented that allows to automatically generating non-cutting tool paths. Process planners will not only be released from developing and simulating time-consuming multi axes traverse moves. The automatically calculated traverse moves will also machine-specifically optimized with respect to various optimization criteria.
An Analytical Thermomechanical Modelling of Peripheral Milling Process Using a Predictive Machining Theory
Authors: Moufki Abdelhadi , Dudzinski Daniel , Le Coz G.
Published: April 2011

In this work, a predictive machining theory, based on an analytical thermomechanical approach of oblique cutting [17,18], has been applied to the peripheral milling process. That leads to a three dimensional cutting force model for end milling operations which is an alternative approach in comparison with the mechanistic one. In this model, the material characteristics such as strain rate sensitivity, strain hardening and thermal softening are considered and thermomechanical coupling and inertia effects are accounted for. Calculated and experimental results are compared for up-milling.
Factors Influencing Bonding Strength of Geopolymer-Aggregate Interfacial Transition Zone
Authors: Wang Qing , Ding Zhao Yang , Da Jing , Ran Kun , Sui Zhi Tong
Published: April 2011

Fundamental studies on geopolymer are increased rapidly because of its potential commercial applications. However, little work has been done on the relationship of the interfacial transitional zone between geopolymer and aggregate and its influence on the final chemical and physical properties of geopolymeric products derived from waste materials. In this paper, factors that influencing the interfacial transition zone of geopolymer concrete such as the type of the aggregate and the oxide compositions of raw materials was studied. The microstructure was also observed through relative devices. The presented results show that bonding strength of geopolymer-marble interfacial transitional zone, of which the 28d bonding strength reached up to 7.9 MPa, was higher than that of geopolymer-granite. The bonding strength of geopolymer-marble/geopolymer-granite interfacial transitional zone increased and finally reached up to 7.9 MPa/4.3 MPa with the molar ratio of n(SiO2)/n(Al2O3) increased within the range of 2.6～2.9. Both geopolymer-marble and geopolymer-granite bonding strength decreased as the molar ratio of n(SiO2)/ n(Na2O) increased. The mechanical properties of interfacial transitional zone between geopolymer and stone were affected by the oxide component of the geopolymer and the type of the raw materials.
The Research on the Sustainable Development of Chinese Rural Cultural Architecture
Authors: Li Shu Ting , Zhou Kun , Liu Jia Ping
Published: April 2011

In the new rural construction of our country, the key jobs are to increase the cultural facilities at rural and to improve the cultural level of rural residents. But with the accelerating process of urbanization and the start of rural primary schools "closing and merging schools”, the rural settlement is showing a rapid declining trend. This article profits from the regional design concept and method in Taiwan rural education construction and summarizes the successful experiences on the functional constitution ways, campus openness, ecology design strategies as well as regional design methods. With the present development situation of our rural areas, the author makes an integrated design of rural teaching rooms and other cultural and educational facilities. And then proposed a concept of "Rural Cultural Center" to support the heritage of local traditional culture, and thus to promote the comprehensive development of rural areas.
A Study on the Luminance of Landscape Lighting of Chinese Classical Architectures Based on Mesopic Vision
Authors: Sun Li Ye , Liu Gang , Hai Hong
Published: April 2011

Landscape lighting of Chinese classic architectures can reappearing the historical, cultural connotation and artistic appeal of architectures at night. Most of these scenes are low luminance and weak contrast, and the visual level is in mesopic vision. Taking the Summer Place as an example, considering the characteristics of vision in different luminance levels, this research obtains a series of simulant scenes with low luminance and weak contrast in mesopic vision by using physical quantity relations between the luminance of actual scene and reappearance scene. Utilizing experiment observation, computer simulation, quantification analysis and subjective evaluation, the research relate the quantitative index and the qualitative description and then realize the synthetically consideration of the relationship between the physics and the psychology stimulation in the lighting environment. Through the statistical analysis of experimental result, it suggests the satisfactory scope of the luminance and the luminance ratio. Similarly, the results of this research have significance to energy saving and the development of green lighting.
Evolution Characteristics of Wuhan Lakeshore Land Utilization in Urbanization Process
Authors: Wu Jing , Xie Hao
Published: April 2011

As the important region of economic growth in Wuhan City, lakeshore region has become a major concern in recent years. Because of vast population and limited land, there is a contradiction of lakeshore utilization. According to the quantitative data of transformation from lakeshore land to construction land in Wuhan in different years, this paper aims at the evolution characteristics of lakeshore land utilization by the analysis of GIS data and the relevant policies. The purpose of the paper is to provide theoretical support for the development and plan of Wuhan lakeshore land utilization and offer bases for the trend of development of lakeshore land utilization in urbanization process of Wuhan.
Studies on Ecological Design Strategies of Greening of Building External Wall
Authors: Wu Jing , Xie Hao
Published: April 2011

Building energy conservation has become the worldwide tendency since the mid-1970s. The Theory of Sustainable Development raised in 1990s as well as the deterioration of ecological environment made the building energy conservation became the international focus all over the world. China is a country with high energy consumption and large population and the percentage of its building energy consumption has reached about 25% on total energy consumption. The energy conservation condition of building external wall is one of the direct influencing factors of thermal comfort of indoor environment. However, greening is a kind of natural sunshade of the nature. The key to the study is how to improve the temperature of building walls and thermal comfort of indoor environment by the way of greening sunshade of external walls.
Studies on Ecological Strategies of Architectural Environment of Small-Scale Landscape Based on Climate Adaptability
Authors: Wu Jing , Xie Hao
Published: April 2011

With the development of economy, pollutions of energy and environment have severely threatened the survival of human beings. Besides, the increasing population and disordered urban expansion also have aroused the deterioration of urban hardening and heat island effect. Therefore, effective ecological design strategies of landscape will become the key point to deal with the current situation. While microclimate, as one of the most significant elements to improve small-scale landscape, requires much more attention. Based on such thought, the thesis takes pains to analyze the different impacts on thermal comfort caused by soft landscape and hard landscape in urban architectural environment, and to put forward ecological design strategies of pavements in urban architectural landscape from the aspect of feasibility.
Experiment Research on the Steel Fiber Reinforced Concrete in the Acid Environment
Authors: Qiang Yue , Li Li , He Ze Ping
Published: April 2011

For the purpose of studying the resistance of steel fiber reinforced concrete against the corrosion of different acid, test compressive strength and flexural strength of the steel fiber reinforced concrete of different volume rate after the corrosion of organic and inorganic acid, and express experiment results with the form of comprehensive corrosion coefficient and the flexural corrosion coefficient in order to reflect the corrosion degree. The results shows that, the organic corrosion has a stronger corrosion effect on the steel fiber reinforced concrete than the inorganic acid under the environment of same PH value. When steel fiber volume rate is 1.5%, the corrosion resistance capacity of the steel fiber reinforced concrete is best.
Analysis of the Application of Rice Straw Brick in Civil House
Authors: Wang Shi Jie , Zhu Xun
Published: April 2011

Winter heating costs is a large proportion of the economy in the account of farmers in cold regions, which can be solved exactly by rice straw brick house. Because the rice straw brick house has many advantages, such as turning waste into treasure, cleaning up the environment and saving heating costs. In this paper, a rice straw brick house and a common brick house have been theoretically designed with the same size and in the same area. The heating load calculation, construction cost, operating costs and social benefits have been compared between the two. From the comprehensive results, the performance of the rice straw brick house is superior to that of the common red brick house
Appropriate Schemes of Rural Eco-Houses in Northwest China
Authors: Zhang Qun , Liu Jia Ping , Liang Rui
Published: April 2011

Taking the rural houses in northwest China as study object, combining with the local conditions of climate and economy, the paper put forward the appropriate schemes of solar energy utilization to meet with ecological building trends, which were experimented in Jianfuqiao village. Also, the indoor objective appropriate temperature is used to analyze the indoor thermal environment of experimental rural houses in winter. Accordingly, the availability and effectiveness of ecological technology utilization in the rural areas has been tested and proved in the northwest China.
Transformation of Traditional Industrial Regions into Campus in Sustainable Way
Authors: Zhou Kun , Li Shu Ting , Liu Jia Ping
Published: April 2011

With the rapid growth of social economy and continuous reformation of industry structure, many enterprises that cannot keep up with the pace of change have gone bankrupt, which have been playing an important part in urban renewal. With a contrastive analysis of traditional resources perspective and sustainable resource concept, an in depth case study on the transformation of a traditional urban industrial region was elaborated in the article, then the concept of resource was proposed, and several corresponding measures were suggested.
Test and Research of Solar Water Heating System on High-Rise Residences
Authors: Du Xiao Hui , Xia Hai Shan , Yi Zhong
Published: April 2011

During the integrated design of solar hot water system into high-rise residences, economy of solar hot water system directly effects its popularization and application. Combining with the concentrated solar water heating system on one high-rise residences, This paper tidies up the testing data on the June to October, and calculates solar insuring rate, auxiliary heat source heating rate and hot water cost at the different weather conditions, analyzes on the causes and provides some improvement advice, which will put forward the reference for architects to make the integrated design on the solar water heating system on high-rise residences.
The Mode Study on Digital Network Technology and Interior Design
Authors: Chen Yan , Tang Jian , Hu Shen Jian , Guo Fei
Published: April 2011

By analyzing the process of interior design creation, the authors formulate a new mode of the digital network design. Moreover, they study the profound change of architectural theory and practice, from fuzzy border sketch to present digital network architecture creation, disclosing the renovation of interior design with digital network technology.
Morphology and Electrical Characteristics of (PEO)10LiClO4 Electrolyte with Nanosized CeO2
Authors: Qi De Jiang , Yang Xiao Hong , Bi Xiao Guo , Ru Hong Qiang
Published: April 2011

In the present work, using nanosized rare earth oxide CeO2 as filler and acetonitrile as organic solvent, a novel solid-state composite polymer electrolyte (CPE) films (PEO)10LiClO4-x wt.%CeO2 (x=0,2,6,9,12,15) was prepared by solution-casting technique. The effect of CeO2 filler concentration on morphology and electrical characteristics of CPE films has been investigated and analyzed. The AC impedance measurements show that the ionic conductivity of CPE can be efficiently enhanced by adding appropriate CeO2. The highest room temperature (25OC) ionic conductivity of 1.71×10-5S•cm-1 is achieved with the CeO2 content of 9 wt.%. With the CeO2 content continues to increase, CPE ionic conductivity begin to decline. This is because appropriate CeO2 can disorder the chain structure and effectively inhibit the crystallization of PEO, which expands the amorphous region required for the lithium-ion transport.
Wood in Architecture: Rediscover the Material of Our Time
Authors: Liu Chang An
Published: April 2011

Wood has been one of the most popular building materials of the world and wooden buildings served as the predecessors and prototypes of architecture in history. This paper focuses on a single material, wood, as a tool to discuss the potential continuity of meaning in the material language of architecture and addresses the topic of the material imagination in architecture.
Simulation of the Control System of Step Motor Based on LabVIEW
Authors: Wu Tao , Fu Kai Ge
Published: April 2011

Based on the mathematical model of the step motor, a new method for modeling and simulation of step motor based on LabVIEW is proposed. The reasonability and validity are testified by the coincidence of the simulation and experimentation results and theory analysis. This method offers a new thinking for designing and debugging actual motors.
Markov Process-Based Availability Analysis of Rendering Cluster Systems
Authors: Wang Yong Bin , Hong Zhi Guo , Shi Min Yong
Published: April 2011

Considering common mode failure (CMF) in the rendering cluster systems, the availability of rendering cluster systems with the increase of cluster’s number was studied. Firstly, based on availability of system with one cluster node, system with two cluster nodes was modeled with continuous time markov chain (CTMC) model. Then, the CTMC model was extended to the case of system with three cluster nodes. Furthermore, by solving these three CTMC models, availability for different cases were numerically deduced. Additionally, during one year the unavailable time for different cases was calculated and analysis by comparison was conducted. Finally, conclusions on different cases’ advantages and disadvantages are derived thereby, which offers theoretical foundations for establishing rendering cluster systems.
Strategy Research on Textile and Garment Export in Jiangsu Province
Authors: Chen Jun Yi , Jiang Rong
Published: April 2011

Textile industry is China's traditional leading industries and pillar industries. Total economic output of Textile industry occupy a pivotal position in all large-scale industries, and is the pillar industry in Jiangsu province's industrial economy, and makes an important contribution for the province's economic development and employment. This article discusses existing problems and countermeasures to address these issues of textile export in the Jiangsu Province. At present, Textile Industry is undergoing a critical period of structural adjustment and industrial upgrading. The textile export industry of Jiangsu Province would continue to grow and develop in the increasingly open a mature socialist economy with Chinese characteristics and a closely intertwined world economy.
Location-Transparent Mobile Agent Communication
Authors: Zhang Qi Cong
Published: April 2011

The mobile agent research has become a hot topic. It is an agent’s fundamental functionality to effectively exchange information with others. In a Mobile Agent System (MAS), the location transparency is critical for inter-agent communications. This paper presented a location-transparent communication model by describing the process of agent migration, inter-agent communication and message delivery. To wrap up the discussion, the author suggested the direction of related future research work.
A Kind of Remote Intellectualized System in Water Quality Analyzing
Authors: Zhao Xiao Qiang , Cheng Wen
Published: April 2011

A kind of Remote Intellectualized System in Water Quality Analyzing is designed, using Menlow and Moblin as its embedded platform and operating system, respectively. The combination of mobile monitoring module and biological monitoring module gives the system a whole cover in monitoring water area. Moreover, the system is armed with such functions as obstacle detection, GPS positioning and automatic control ship ,it even not only can transport the information which are written and stored into the memory-chip to the distant computer, but also alarm when it finds data exceeds the National Standard. Scientific decision can also be made and given by this system in order to help our Environment Supervision Department take effective measures as soon as possible. The system has many advantages like high reliability, ease of installation and low cost characteristics, and even good application value.
Hydrodynamic and Mass Transfer Performance of Bilayer Fixed Valve Tray
Authors: Sun Lan Yi , Wang Ru Jun , Zhai Cheng , Li Qing Song
Published: April 2011

Fixed valve trays have the advantages of low pressure drop, high efficiency, anti-fouling, simple structure, low manufacture cost and long runtime and therefore have been widely used abroad. This paper presents a new bilayer fixed valve (BFV) tray which has some improvements on traditional fixed valve trays. The hydrodynamic and mass transfer performance of BFV tray, sieve tray and F1 valve tray was experimentally studied with air-water-oxygen system in a 1.2m column. The results showed that the BFV tray possesses low pressure drop, high capacity, wide operating range and high efficiency.
Median Filter based Manifold Ranking Approach for Robust Image Annotation
Authors: Hu Xiao Hong , Tu Hong
Published: April 2011

A novel median filter based manifold ranking approach for robust image annotation was presented in this paper. Firstly, we propose a similarity matching approach of manifold ranking to improve the robustness of traditional label propagation with median filter. Then the refined affinity matrix was applied to label propagation. Thus, the traditional pair-wise similarity is updated with scores using median filter of its neighbors in manifold space. Finally, the proposed image annotation approach propagated the image labels from the labeled images to the whole image database. The experiments over Corel images have shown that embedding median filter approach in manifold space is beneficial in image annotation.
Harmony Search Algorithm and its Application to Product Module Identification
Authors: Shan Quan , Chen Yan
Published: April 2011

Point to product module identification, a new optimization method is proposed in this paper. This approach uses the harmony search (HS) algorithm with the synthesis design structure matrix (DSM). The synthesis DSM thinks a series of property correlations facing the product lifecycle, such as function, geometer, physics, assistant and so on. An optimization function for module identification, based on the axiomatic design theory, is established. This optimization approach, which used HS algorithm, is tested several times and compared with other classical algorithms, such as simulated annealing algorithm (SAA) and genetic algorithm (GA). The result demonstrates the feasibility of the proposed approaches.
An Improved Text Similarity Calculation Algorithm Based on VSM
Authors: Li Lian , Zhu Ai Hong , Su Tao
Published: April 2011

Text similarity calculation is a key technology in the fields of text clustering, Web intelligent retrieval and natural language processing etc. Because the traditional text similarity calculation algorithm does not consider the affect of same feature words between texts, sometimes this algorithm may lead to inaccurate results. To solve this problem, this paper gives an improved text similarity calculation algorithm. Considering that the amount of same feature words reflects two texts’ similarity in some extent, the improved algorithm adds in the coverage measured parameter, which effectively reduces the interference of texts with lower similarity. The simulation and experimental results verify the improved algorithm’s correctness and effectiveness.
Research of Product Dependability Strengthen Design Method
Authors: Jiang Wen Wen , Xie Zhi Bin
Published: April 2011

This paper adopts the methods of entity type experiment, experience model test, analyze model simulation artificial method to research of strengthen design method of product dependability. It is found that the design need to search and lock risking factors to influence product quality carrying on product dependability and need to set up product reference system of index to weigh properties to construct figure analyze model, mathematics derive model and entity prove testing model, establish function value of terminal parameter to carry on the experiment. The result indicates that implement of product dependability strengthen design need to test foundational test target of pertinence implement model plan using entity test, model emulation, deriving, experience judgement comprehensive method of mathematics to implement experiment plan, lock risk factor, construct risk factor system in order to optimize whole product dependability design plan model.
Research of Method of Transfering Research Content into Product Property Parameter
Authors: Xie Zhi Bin , Jiang Wen Wen
Published: April 2011

This paper adopts the methods of analysising and summarizing the primitive information which is from the users to study on how to transfer initial requirements of users and research content into product specific property parameter and functional service project. It is found that it needs to summarize the research materials, to discover structural systematicness, technological detail, man-machine interoperability, semantic symbolic, economic rationality, manufacturing simplicity, model artistry among them, base on the peripheral culture history development system, humanization entity system, rational system, society and politics system, economy environment system, social life environment system of the design object to put forward the solutions centrally, systematically and scientifically. The result indicates that every performance index and function service content of products should take people's physical, mental and emotional tolerance as measure.
The Research on Fuzzy Neural Networks in the Multi-Sensor Information Fusion of Intelligent Robots
Authors: Hu Lian Jun , Song Hong , Luo Yi , Zeng Xiao Hui , Wang Bing Qiang
Published: April 2011

A controller based on fuzzy neural network is designed in the paper. Fuzzy neural networks are introduced into the information fusion of signals from sensors of an AS-R intelligent robot. Characteristic information of unknown environments acquired by ultrasonic sensors, infrared sensors and vision sensors are fused together in order to eliminate uncertainty caused by single sensor. Therefore, precise environment information can be obtained and the fault tolerant capabilities of robots are improved. It is proved that intelligent robots adopting multi-sensor information fusing techniques have better real-time and robust characteristics according to simulation results.
Performance Improvement of Handover Process Using Monitor Equipment in Vehicle Mobile Device
Authors: Liu Zhuang , Fang Zhi Yi , Zhao Xu
Published: April 2011

In this paper, a new method of handover process of moving vehicle mobile device is proposed in order to reduce the time delay caused by handover. A new monitor equipment is set in access network part to respond for reducing the time delay of handover by processing the security and authentication access for new session beforehand. Experiments of this work were done, and the result has proved that this method can reduce time delay of handover efficiently.
The Application of Analysis of Variance Method to Optimize Injection Parameters of Polymer Flooding in Sub-Layers
Authors: Yang Er Long , Geng Wen Shuang
Published: April 2011

Combining with static information of injection wells and using effective thickness, number of layers greater than 1 meter and ratio of 3 to 4 connected thickness greater than 1 meter as evaluation index, this paper use cluster analysis method to category injection wells of west and east blocks in north first and second row of Sazhong development area in Daqing oilfield. Then, with evaluation of accumulated increased oil per unit thickness, using single dependent variable two-factor variance analysis method to optimize injection rate and injection concentration of injection well groups which have been classified into different types.
Exploring the Application of Voice Interactive Technology in Distance Language Teaching
Authors: Xia Fang Yi
Published: April 2011

Rapid development of communication technologies has brought revolutionary changes to language teaching and learning. The use of computer technology has become an integral aspect of language learning. A diverse array of technologies, such as online learning platform, CD-ROMs, Multimedia Network Courseware, write site and videoconferencing etc. have been used to enhance distance language teaching, but they don’t provide opportunities for oral output since most of the communication tools are text-based. This poses great impediment to language learning, so, this research strongly recommends that voice interactive technology, such as Wimba Voice, should be applied to distance language teaching especially in Radio & TV Universities—China’s largest provider of open and distance education.
Size Estimation of Tomato Fruits Based on Spectroscopic Analysis
Authors: Yang Hai Qing , Kuang Bo Yan , Mouazen Abdul M.
Published: April 2011

This study used visible and near-infrared (VIS-NIR) spectroscopy for size estimation of tomato fruits of three cultivars. A mobile, fibre-type, VIS-NIR spectrophotometer (AgroSpec, Tec 5, Germany) with spectral range of 350-2200 nm, was used to measure reflectance spectra of on-vine tomatoes growing from July to September 2010. Spectra were divided into a calibration set (75%) and an independent validation set (25%). A partial least squares regression (PLSR) with leave-one-out cross validation was adopted to establish calibration models between fruit diameter and spectra. Furthermore, the latent variables (LVs) obtained from PLS regression was used as input to back-propagation artificial neural network (BPANN) analysis. Result shows that the prediction of PLSR model can produce good performance with coefficient of determination (R2) of 0.82, root-mean-square error of prediction (RMSEP) of 4.87 mm and residual prediction deviation (RPD) of 2.35. Compared to the PLSR model, the PLS-BPANN model provides considerably higher prediction performance withR2of 0.88, RMSEP of 3.98 mm and RPD of 2.89. It is concluded that VIS-NIR spectroscopy coupled with PLS-BPANN can be adopted successfully for size estimation of tomato fruits.
Prediction of Soil TN and TC at a Farm-Scale Using VIS-NIR Spectroscopy
Authors: Yang Hai Qing , Kuang Bo Yan , Mouazen Abdul M.
Published: April 2011

Building cost-effective models is of academic and practical value for fast measurement of soil properties, especially at a farm-scale. The aim of this study is to build quantitative models for soil total nitrogen (TN) and total carbon (TC) using visible and near infrared (VIS-NIR) spectroscopy. Dried samples (n=122) collected from an experimental farm, at Silsoe, Bedfordshire, United Kingdom, were scanned from 350 to 2500 nm at 1-nm intervals. Samples were divided into a calibration set (75%) and an independent validation set (25%). A partial least squares regression (PLSR) with leave-one-out cross validation was carried out based on different spectral ranges. Result shows that the best predictions (R2>0.90 and RPD>3.3) are achieved for TN using the VIS range (400-700nm) and for TC using the VIS-NIR range (400-2500nm). It is concluded that VIS-NIR spectroscopy coupled with PLSR can be adopted for the prediction of soil TN and TC at a farm-scale.
Ownership Structure and Corporate Governance - A Empirical Study of Chinese Listed Companies
Authors: Tan Duo Jiao , Yu Si Lin
Published: April 2011

Based on the cross-sectional data and from the shareholding structure, this paper analyzes the current status of ownership structure of Chinese listed companies, with ROE as the measure of the efficiency of corporate governance. It uses the regression analysis method to study the equity structure effects of listed corporate governance empirically. The conclude points out the factors of imperfect governance structure and the resolutions of that, as well as the policy recommendations of optimizing the ownership structure of listed companies and improving the governance structure.
On the Sustainable Development of Competitive Sports in "Post Olympic" Period of Olympic Hosting Countries - Based on System Regulation Theory
Authors: Han Chun Li , Wei Chun Ling
Published: April 2011

From the three aspects which conclude the strength and level, the function and the development condition of the competitive sports, it analyzed the competitive sports sustainable development system of host countries of the Olympic Games after the period of Olympic Games. From the three aspects which conclude the regulation thoughts, modulation methods and regulation ways, it constructed the competitive sports sustainable development’s system regulation of host countries of the Olympic Games after the period of Olympic Games. It introduced the intelligent control methods of the fuzzy control, the vague control, the set control, extension control, the rough control, fuzzy extension and consultation control and so on, as well as proposed the viewpoint that carried on the control by using the intelligent control body of the intelligent control integration, and established the intelligent control body model.
Application of Difference Frequency Laser in Trace Gas Measurement System
Authors: Yang Qiu Xia , Zhu Yang Ping , Li Zhi Quan , Liu Zheng Jun
Published: April 2011

Based on Nd:YAG laser, tunable diode laser, electro-optic amplitude modulator and the difference frequency generator, a servo scanning laser source is designed, and the principle of trace gas concentration measurement model is introduced as well, which can realize the gas concentration measurement in the band of mid-infrared and far-infrared. Based on the theory of electromagnetic field, mutual coupling equation about laser transmission in nonlinear crystal and the optical frequency conversion characteristics are analyzed theoretically. As a result, in the range of far-field, electric field intensity of coupled wave increases approximatively exponentially,then tends to be stable.
Robustness Problem Argumentation from Image Quantization Errors in Vision Location
Authors: Qin Li Juan
Published: April 2011

In our vision location system, error is inevitable. Image quantization errors play an important role in computer vision field. Quantization errors are the primary sources that affect the precision of pose estimation and they are inherent and unavoidable. It is important to analysis on the effect of this error on compute process. In this paper, Robustness problem argumentation in vision location is presented in detail. Then we introduce image quantization error. Robustness mathematical model for vision location is set up at last.
BP Model Used for Calculating the High Efficient Sediment-Transport Water Volume in the Lower Yellow River
Authors: Yan Jun , Liang Biao , Cao Hui , Zhang Yu Hua
Published: April 2011

Analyzed the sediment-transport process in the Lower Yellow river, the concept and normal calculating method for sediment-transport water volume are proposed. Based on field data of sediment and water volume in the Lower Yellow River from 1950 to 2000, the sediment-transport water volume and unit sediment-transport water volume in LYR are calculated. Furthermore, BP model is set up to calculate the high efficient sediment-transport water volume in the Lower Yellow River. Compared the results of BP model with normal calculating method, BP model is confirmed for calculating the high efficient sediment-transport water volume in the Lower Yellow river.
The Suitable Water-Sand Combination Used for Controlling the Environmental Abnormal Variation in the Lower Yellow River
Authors: Yan Jun , Zhang Ju , Yang Xian Bo , Zhang Yu Hua
Published: April 2011

Analyzed the variation reasons and its influence factors of the Lower Yellow River (LYR), the characteristics of typical water environment abnormal variation caused by human activities and the natural influence factors are put forward. The concept of environmental abnormal variation has been proposed. Further more, the reparation methods for the environment abnormal variation in the Lower Yellow River are stated.
GSM(1) Model and its Application
Authors: Zeng Bin , Zeng Wu Jun
Published: April 2011

Although the GM(1,1) model has been successfully adopted in various fields and has been demonstrated promising prospect. But the form of the GM(1,1) model is single and obviously is not suitable for all data with different character. In order to increase the adaptive capability some different forms of the grey model is needed to be established. The paper adopts combinatorial form instead of const in the right part of the grey equation which we call it GSM(1) model. GSM(1) model is one variable index serials function which contains more information in the equation and can find more complicated law between data. On the condition of the original data multiplying the time interval the paper introduces difference quotient into the equation and establishes the unequal GSM(1) model. The examples prove GSM(1) is an effective form to improve the accuracy of the grey model. It provides a new way for the grey system application.
The Research of Re-Winder Bottom Roller Feed-Forward Control Tactic
Authors: Chen Jing Wen , Sun Xiao Ping
Published: April 2011

As the last working procedure in the paper production process, re-winder control technology is crucial to the quality of finished paper scroll. To obtain the paper scroll with inner tight and outer loose, the control of bottom rollers must satisfy the double closed-loop feedback control with torque difference. While the feedback control exists time-delay and may cause the slowness of system response. Here on the basis of re-winder production process and control requirements, a novel feed-forward control tactics is proposed to combine with feedback control. According to the compensation of feed-forward control, rapid system response is obtained and system performance is improved. And corresponding simulation shows the validity and feasibility of the feed-forward control tactics.
Effect of Clay Content on the Adsorption Loss of Surfactant in ASP Floods Systems
Authors: Song Wen Ling , Pan Jing , Gao Yue Hong
Published: April 2011

This paper discussed the mechanism of adsorption of the petroleum sulfonate and heavy alkylbenzene sulfonate on reservoir sand mixed with clay of Daqing oil field. The results showed that: the adsorption of surfactant increased with the increasing of the surfactant equilibrium concentration and clay content in the ASP floods systems; interfacial tension decreased with the increasing of surfactant content; the interfacial tension become higher after adsorption on the reservoir sand. Application result of weak base system is better than strong base, because of the lower adsorption and interfacial tension is provided.
An Analysis of the Development of Logistics in Guangxi Beibu Gulf Economic Zone
Authors: Lan Qian
Published: April 2011

Although the logistics of Beibu gulf (Guangxi) is still in the primary stage such as the small-scaled logistics enterprises, low service level, weak logistics demand, sluggish infrastructure, and the chaotic logistics market, etc, it faces a series of development opportunities, its second-mover advantage is obvious and the growth potential is great. As long as we straighten out the management mechanism, overcome the bottleneck of the system, position accurately, analyze rationally, distribute reasonably, build logistics infrastructure according to the situation of the economic zone, pay great attention to the personnel training and learn from others’ experience, logistics can become a pillar industry in Beibu gulf economic zone.
Autocontrol of Water Condenser Based on PID Controller
Authors: Yang Xing Hua , Liu Ting Rui , Sun Ai Qin
Published: April 2011

To maintain the outlet temperature at the desired set-point, a high-order outlet temperature control model is established for a water condenser, and different PID controller design methods are applied to its temperature control process. The control function model is based on the analysis of the heat balance equation and the heat transfer rate equation. The design process of three different PID control methods, including Ziegler-Nichols Method, Modified Ziegler–Nichols Formula and the Optimum PID Controller, together with the unit step response consequence are provided and compared, and the numerical simulation results show that the Optimum PID Controller has a favorable control performance.
Design Practical FBG Sensor Applied to Bridge Health Monitoring
Authors: Wu Zhao Xia , Zhang Zhi Yuan , Fu Bin , Wei Xian Ping
Published: April 2011

Monitoring systems based on fiber optic technology have proved to exhibit meaningful benefits when compared with the current solutions of an electricnature. A novel low cost sensing system for measuring temperature, strain and pressure based on practical fiber Bragg grating (FBG) to be embedded into concrete is given in this paper. At the same time, the main principles of multi-parameter are introduced. The wavelength scanning demodulation system based on continuous wave tunable frequency is designed. The practical FBG sensors have been successfully used in monitoring cable-stayed bridge’s health monitoring. The system's conception, the adopted sensors network architecture, and the practical installation of a monitoring system based on FBG sensors are discussed. The experimental results indicate that practical FBG sensors can monitor the structure parameters for a long time, as well as have higher stability.
An Overview of Optical Music Recognition in China
Authors: Chen Gen Fang , Zhang Wen Jun
Published: April 2011

OMR (Optical Music Recognition) is a technology for digital musical score image processing and recognition by computer, which has broad applications in the digital music library, contemporary music education, music theory, music automatic classification, music and audio sync dissemination and etc. This paper first has a brief description of OMR research and focuses on describing the research of Chinese OMR literature, it represents the research status and results in China, then the paper pointes out that the target of OMR research in China must tend to Chinese traditional musical score image processing and pattern recognition.
Vertex-Distinguishing Total Coloring of Ladder Graphs (N=0(mod 8) )
Authors: Wang Zhi Wen
Published: April 2011

A proper total coloring of a simple graph G is called vertex distinguishing if for any two distinct vertices u and v in G, the set of colors assigned to the elements incident to u differs from the set of colors incident to v. The minimal number of colors required for a vertex distinguishing total coloring of G is called the vertex distinguishing total coloring chromatic number. In a paper, we give a “triangle compositor”, by the compositor, we proved that when n=0(mod 8) and , vertex distinguishing total chromatic number of “ladder graphs” is n.
The Research of the Odorous Pollutants Dispersion Forecasting and Simulating Model
Authors: Wang Yuan Gang , Bao Jing Ling , Zhang Hui , Zou Ke Hua
Published: April 2011

Odorous pollution increasingly becomes a serious environmental and social problem. Due to its complexity and a wide range of sources, affected by meteorological, topography, hypsography etc surroundings, being not easy to master its pollution diffusion regularity, odor has been a major hot and difficult problem in the departments of environmental protection administration. According to its characteristics of various composition, odorous pollutants having short time in diffusion way, the higher instantaneous concentrations, the odorous pollutants forecast models are established on the basis of gauss diffusion model, In the paper, we establish odorous pollutants dispersion prediction stimulation models on the basis of gauss diffusion model, including point source diffusion model, enclosed point source diffusion model. it provides technical support odorous pollutants forecasting and simulating.