bluuebunny/crossref_metadata_2025 huggingface dataset:
Structural, Electrical and Magnetic Properties of Nanocrystalline Mg-Co Ferrites Prepared by Co-Precipitation
Authors: Anis-ur-Rehman M. , Ali Malik Muhammad , Khan Kishwar , Maqsood Ashari
Published: April 2011

Mg-Co nano crystalline ferrites having general formula Mg1-xCoxFe2O4 (x=0, 0.05, 0.1, 0.15, 0.2, 0.25) were prepared by co-precipitation method. X-ray powder diffraction (XRD) patterns of the prepared samples show the formation single spinel phase. The crystallite size, lattice parameters and porosity of samples were calculated by XRD data analysis as function of cobalt concentration. The crystallite size for each sample was calculated using the Scherrer formula considering the most intense (3 1 1) peak lies in the range 27-35 nm. The lattice parameters increased with increase of cobalt concentration. It is because of the fact that cobalt has greater ionic radius then magnesium. The dielectric constant, dielectric loss tangent and ac electrical conductivity of the prepared samples is also measure. The observed variation in electrical and dielectric properties is explained on the basis of cations distribution among tetrahedral (A) and octahedral (B) sites. The variance in saturation magnetization, remanence magnetization and magnetic moment was also measured from BH curve of samples.
One-Pot Synthesis of Coral-Shaped Gold Nanostructures for Surface-Enhanced Raman Scattering
Authors: Yang Jian Hui , Sardar Dhiraj K.
Published: April 2011

In this work, a chelating agent, ethylenediaminetetraacetic acid (EDTA) was used for the controllable synthesis of gold nanostructures in aqueous solution. Coral-shaped Au nanostructures were synthesized by reducing HAuCl4 with EDTA. EDTA serves not only as a reducing agent but also as a particle capping agent in the formation of coral-shaped Au nanostructures. It is found that the molar ratio of HAuCl4:EDTA and reacted temperature play significant effects on the formation and growth of these novel nanostructures. These Au nanostructures could serve as highly sensitive and reproductive surface-enhanced Raman scattering (SERS) substrates for chemical and biological detection.
Optical and Wetting Properties of Femtosecond Laser Nanostructured Materials
Authors: Vorobyev A.Y. , Guo Chun Lei
Published: April 2011

We modify optical and wetting properties of solids using a femtosecond laser surface nanostructuring technique. We demonstrate that this technique allows creating black and color metals. Absorptance of black titanium created in our study is measured to be about 90-97% over a broad wavelength range from the ultraviolet to infrared. Moreover, our technique can be also used for modifying wetting properties of solids. Here, we create a novel surface structure that transforms regular silicon to superwicking. This surface structure makes water run vertically uphill in a gravity defying way. Our study of the liquid motion shows that the extraordinarily strong self-propelling motion of water is due to a capillary effect from the surface structures we created.
Low-Temperature Synthesis and Growth Mechanism of ZnO Nanorods on Crystalline Si Substrate
Authors: Pérez-Hernández Raul , Velázquez-Salazar J. Jesús , José-Yacamán Miguel
Published: April 2011

Single crystalline zinc oxide (ZnO) nanorods have been grown on Si (100) substrates by a hydrothermal method at 65 °C. In order to show the habit of crystalline growth and applied these ZnO 1D to the electron radiation. The ZnO nanorods grown on Si (100) have been characterized in detail using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The XRD studies revealed that the ZnO nanowires showed the wurtzite structure (hexagonal). The Secondary Electron SEM image showed different morphology of the ZnO nanorods as a function of the reagents concentration. These nanorods have uneven tops and showed an apparent screw growth pattern with a typical hexagonal facets structure on the (0001) surface. The spiral growth step morphology strongly suggests that screw dislocations can play a significant role in promoting the ZnO nanorods growth and that the screw dislocation is growing in the polar axis of the ZnO nanorods. The ZnO nanorods were irradiated with electron beam (30 kV) for 100 minutes. We observed that the one-dimensional (1-D) ZnO nanorods were resistant to the electron radiation. This finding is interesting because, we can use these 1-D ZnO nanorods to development materials which can be resistant to radiation.
Growth, Microstructure and Properties of Epitaxial La1-XSrxMnO3 Thin Films on Various Substrates Using RF Magnetron Sputtering
Authors: Fang Y. , Sakhalkar V.R. , He J. , Jiang H.Q. , Jiang Jiechao , Meletis Efstathios I.
Published: April 2011

Synthesis of high quality epitaxial LaMnO3 and (La,Sr)MnO3 films on large areas is highly desirable. Recently, we have deposited LaMnO3 and (La,Sr)MnO3 films on the MgO (001) and LaAlO3 (001) substrates using RF magnetron sputtering. Highly epitaxial quality thin films have been successfully obtained at 750 °C by manipulating processing parameters as characterized by X-ray diffraction, electron diffraction and HRTEM. The epitaxial LaMnO3 and (La,Sr)MnO3 thin films have either a tetragonal or orthorhombic crystal structure depending on the film (target) composition and substrate type. The (La,Sr)MnO3 films were found to have an orthorhombic crystal structure when deposited on LaAlO3 substrate and a tetragonal structure when deposited on MgO substrate; whereas LaMnO3 films have a tetragonal structure when deposited on LaAlO3 substrate and an orthorhombic crystal structure when deposited on MgO substrate. The orthorhombic structures of the (La,Sr)MnO3 film on LaAlO3 and LaMnO3 on MgO are oriented with their c-axis on the film plane. Magnetic studies show that the epitaxial films have higher phase transition temperature than the corresponding bulk material and to those obtained using pulse laser deposition. Successful synthesis of highly epitaxial quality films by RF magnetron sputtering over a larger area can result in reduced cost for fabricating and processing epitaxial thin films.
Analysis of Smart Antenna Interference Suppression Base on LMS Improved Algorithm
Authors: He Hong , Wu Cong Cong , Yang Tong , He Lin , Li Dan
Published: April 2011

Smart antenna technology can increase channel capacity, improve spectrum efficiency and enlarge cover area by using its spatial diversity ability , which greatly improve system performance . A least mean squares (LMS) is posed for the smart antenna adaptive interference suppression system based on the training sequence. Also , the least mean square (LMS) and least squares (RLS) algorithm are proposed for the design and simulation about interference suppression and compare and analyze the result which can prove the effectiveness about algorithm in TD-SCDMA system .According to the results, the new method with a faster convergence speed, which doesn`t matter with interference environments, is better than LMS.
Preparation and Electromagnetic Property of Hexagonal W-Type Ferrite Obtained by the Sol-Gel Method
Authors: Xiong Zheng , Xi Zhu , Jun Zhang Li
Published: April 2011

Hexagonal W-type ferrite BaZn0.6Co1.4Fe16O27 was prepared by the sol-gel method. The formation, microstructure, element composition and phases were analyzed by TG-DTA, SEM, EDS and XRD. The electromagnetic parameters and microwave absorption capability were measured by the microwave vector network analyzer. The results showed that the reflection loss of the ferrite BaZn0.6Co1.4Fe16O27 in the spectrum of 8-18GHz came up to -10dB and came up to -20dB in the spectrum of 9.5-16.4GHz.
Use of Municipal Solid Waste Incineration Bottom Ash in Adsorption of Heavy Metals
Authors: Zhang Hai Ying , Zheng Yi , Hu Hong Tao , Qi Jing Yu
Published: April 2011

Bottom ash from municipal solid waste incineration (MSWI) has been previously suggested as an adsorbent for removing heavy metals from wastewater due to its high porosity and large surface area. In this study the adsorption characteristics of heavy metals were investigated using various particle sizes of MSWI bottom ash. The adsorption experiment was conducted using synthetic wastewater containing Cu, Zn, Pb and Cd as a function of residence time, initial pH, ash dosage and particle size, respectively. The adsorption rate increased with decreasing particle size and with increasing residence time. Through the above analysis, this work proved that bottom ash was effective in adsorbing the four heavy metals.
Simulation Study on Attrition to Centrifugal Sewerage Pump
Authors: Liu Jian Hua , Zhu Ming Yi
Published: April 2011

By Means of Fluent 6.3，the paper simulated the solid-liquid two-phase flow to a type of centrifugal sewerage pump under different sand size and contain arenaceous concentration conditions, using Eulerian Mixture Model, adopting SIMPLE algorithm, k-ε-Ap turbulence model and partitioning non-structure hex grid in the area of flow passage in the pump. The paper analyzed wear characteristics in different parts of centrifugal sewage pump impeller and put forward some means to decrease attrition for impeller. The results can be as theoretical reference for the optimization design of the centrifugal sewage pumps
The Application in Grain Monitoring Based on Particle Swarm-Fuzzy Neural Network Algorithm
Authors: Tong Zhen , Jing Wang , Ming Yi , Wu Jian Jun
Published: April 2011

In order to strengthen the administration of the barn, we need to storage environment for scientific and effective monitoring and analysis. This paper firstly filter and merge the temperature and humidity information in the environment by using fuzzy neural network, then regard the temperature and humidity as particles, calculate the fitness of the particles according to corresponding mildew rate and cost, finally the outputs of temperature and humidity curve values are obtained through iterative optimization of local and global extreme by particle swarm algorithm.
Research on Improving LFMCW Radar Level Measurement Accuracy
Authors: Yu Xiao Min , Yu Xiao Kun
Published: April 2011

LFMCW radar have a high range measuring accuracy in theory. But in practice, the picket fence effect of the FFT transform, making the range resolution and range accuracy in the same order of magnitude, can not meet the accuracy requirements for the near range measuring . Cascade FFT method is adopted to reduce frequency space of the main lobe of echo range spectrum on the FFT with increasing the less operation .The method can greatly improve the range precision of LFMCW Radar.
Method of Construction and Enumeration Steiner Triple Systems with Order 19
Authors: Li Xiao Yi , Xu Zhao Di , Chou Wan Xi
Published: April 2011

Basic idea of this paper is constructing the v order Steiner triple systems. A definition of the edge matrix is given, a method of constructing and technology view for sub graph decomposition of is proposed. Giving an introduction of constructing and counting 19 order Steiner triple systems. The method of constructing and counting Steiner triple systems in this paper is effective.
Velocity Field in 90°Curved Duct of Cycle Section
Authors: Sun Tao , Zhang Yi , Sun Hai Ou , Wang Zhong Yi
Published: April 2011

Flow in curved duct is different from that happens in straight pipeline. Affected by the curved duct curvature, the flow field in a curved duct is uneven. The flow in the curved duct suffers serious loss. Considering the flow field characteristic and engineering applications, the characteristic of the flow field in curved duct without guide plate and the curved duct with different guide plates have been studied based on the numerical results. The velocity distribution and unevenness on the outlet of the curved duct have been analyzed too. Then the best conditions for guide plates installed in curved duct are achieved.
Rehydration Performance of Binary Binders Made with Dehydrated Cement Paste and Phosphogypsum
Authors: Sun Tao , Shui Zhong He , Huo Tao
Published: April 2011

This paper presents the rehydration performance of binary binders made with dehydrated cement paste (DCP) and phosphogypsum (GP). DCP was obtained by thermal treatment of hardened cement pastes in which the initial water to cement ratio was 0.5. DCP we mixed with phosphogypsum (PG) to prepare the binary binders . The effect of PG on the physical and mechanical properties of the binary binders was investigated. Scanning electron microscope (SEM) was used to indentify the structural characteristics of the rehydration products. The results showed that the setting time was prolonged and the compressive strength increased slightly by mixing DCP with PG. Microstructural observations indicated that an remarkable amount of ettringite intergrows with the hydrated calcium silicate to form a network structure. Thus, the addition of phosphogypsum can not only utilize the industrial by-product, but enhances the hydraulic properties of the DCP.
Synthesis and Optoelectronic Properties of a Novel Photochromic Diarylethene Bearing a Six-Membered Aryl Unit
Authors: Tong Zhi Peng , Pu Shou Zhi , Cui Shi Qiang , Liu Wei Jun
Published: April 2011

A new photochromic diarylethene, 1-(2-ethyl-3-benzothienyl)-2-[2-methyl-5-(3-trifluoromethylphenyl)-3-thieny] perfluorocyclopentene (1a) was synthesized, and its photochromic and fluorescent properties were also investigated. such as photochromism in solution as well as in polymethylmethacrylate (PMMA) amorphous films, Diarylethene 1a changed the color from colorless to purple upon irradiation with 297 nm UV light, in which absorption maxima were observed at 555 nm in hexane and at 581nm in PMMA amorphous film, the result showed that it can be useful in molecular scale optoelectronics and potential use for data storage. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 413 nm when excited at 303 nm. The fluorescence intensity decreased along with the photochromism upon irradiation with 297 nm light and its closed-ring isomer showed weak fluorescence.
The Application of Job Bidding Mechanism in Electrical Enterprises
Authors: Zhao Jian Na , Xu Jing
Published: April 2011

With the advent of knowledge economy era, the man is becoming the key factor to achieve his own strategic objectives. Therefore,in the development of the electric power Industry, the development, utilization and management of human resources have become not only the key factor of electrical enterprises’ economic growth, but also form the strategic resources of enterprises' core competitiveness directly. Consequently, Human Resource Management becomes the main question electrical enterprises’ management. The purpose of human resource management is to put all staff to the best use and put them in the proper positions in order to bring all their creativity. Competition mechanism can fully motivate the staff’s initiative and creativity. That can allocate human resources rationally. Job Bidding is a competitive merit-based, effectively encouraging and energetic working mechanism which is formed during the practice of personnel reform in electrical enterprise.
Fuzzy Comprehensive Evaluation Method for Mechanical Seal Risk Assessment of Centrifugal Pumps
Authors: Hao Ying Jie , Gu Bo Qin
Published: April 2011

A failure analysis of mechanical seals of centrifugal pumps was presented with fuzzy comprehensive evaluation method. Both failure probability and failure consequence were analyzed to evaluate the risk grade of the mechanical seals. The potential risk level of a mechanical seal was estimated by the application of risk matrix. The proposed fuzzy comprehensive evaluation method can be used to judge the reliability of mechanical seals and provide an important reference for the safe and stable operation of centrifugal pumps.
Study on the Chlorophyll-a and Primary Production in the Luanhe–Beidaihe Estuary
Authors: Wang Su Feng , Zhang Yan Long , Li Jian
Published: April 2011

The chlorophyll-a and the primary production on different sections in the Luanhe-Beidaihe Estuary in August 2007 respectively ranged from (2.9 ± 0.5) to (10.5 ± 2.0) ( mg/m3), and from (14.9 ± 3.4) to (84.0 ± 7.6) (mgC/m2∙d). The chlorophyll-a concentration and the primary production in the southern part (section A-section E) were more than that in the northern part (section F- section H). It would suggested that the agriculture and aquiculture in the southern part imported more nutrients than that of the leisure and recreation industries imported in the the northern part, and the discrepancy of chlorophyll-a concentrations and primary production of different sections should be resulted from the different intensity of people activity in these areas.
Kinematical Analysis and Simulation of Upper Limb Rehabilitation Robot
Authors: Cheng Xiang Li , Zhou Yi Qi , Zuo Cui Peng , Fan Xiao Hua
Published: April 2011

To assist stroke patients with rehabilitation training, an upper limb rehabilitation robot with an exoskeleton structure and three degrees of freedom (DOF) was developed in this paper. Under the guidance of the theory of rehabilitation medicine, the mechanical design of the robot was completed. Then, the kinematics equations were established by means of homogeneous transformation, including the forward kinematics and the inverse kinematics. The kinematical analysis was carried out and the algebraic solution of inverse kinematics was derived, which provided a theoretical basis for realizing the intelligent control. To validate the performance, the kinematical simulation was conducted, and the simulation results showed that the design of the exoskeleton robot was feasible.
Research on the Transformer Phase Testing Methods
Authors: Li Ting Jun , Ni Bao Hang , Wang Jie , Lin Hong Wen , Wang Jia Li
Published: April 2011

Using the general digital phase transformer is unable to measure the minimum phase of the mutual inductor. This paper introduced the basic principles of using an oscilloscope to measure the minimum phase of the mutual inductor. It gives a measurement method and the steps. It has certain significance to small precision measurement phase transformer.
A New Network Security Evaluation Model Based on Multi-Data and Layer
Authors: Ma Xiao Hu
Published: April 2011

The last few years, research on network risk evaluation technique[1], and establishment of risk evaluation system facing integrity grade protection is the hot problem. There is great significance. The existing network safety valuation system exists many blemishes in science, and nationality, etc. Such as pole light, Nessus, Anluo network risk valuation system etc, they evaluate only from loophole scan or permeating test etc. There Lack important contents, for example, the safe grade and safety of target management strategy of the evaluation network. The standards, such as CC and OB 17859, OBIT 18336, OBIT 20984[2] etc ,are the outline requests , don't have easy operability. The existing network safety valuation methods and models, for example, network safety valuation model based on the discharge attack judges[3] , visit control model[4], network safety valuation model based on the diagram talks[5], all have blemish, there have a few evaluate objects, it's strong to limit, the function is bad. To resolve the above problem, this paper provides a model named NSEMML (Network Security Evaluation Model based on Multi-data and Layer), And a new risk evaluation system based on FNSEM is developed.
ZARA-Based Design Management
Authors: Guan Jia Qing , Zhang Gen Yuan
Published: April 2011

ZARA is a pioneer of fast fashion brand which has strong advantages in integration of industrial chain, market and user research. This article tries to analyze ZARA in depth, including finding models and theories behind its success. And the last part of the article is a relatively new perspective, that is, using predictions in the design.
A Chaos Particle Swarm Optimization Based on Adaptive Inertia Weight
Authors: Jie Zheng
Published: April 2011

In this paper, the chaotic optimization algorithm is embedded in traditional PSO algorithm using randomness and ergodicity of the chaotic characteristic, and random numbers and a inertia weight factor in PSO algorithm is substituted respectively by chaotic variables and an adaptive inertia weight function, so the ACEPSO algorithm is proposed in order to overcome the drawbacks of CPSO algorithm that easily falls into local optimum. With the simulation experiments, the effectiveness of ACEPSO algorithm is verified by optimization tests with the complex multi-dimensional function. The simulation results verify that the ACEPSO algorithm is robust, high precision, and strong global convergence, and is a kind of practical and feasible optimization algorithm.
Automatic Detection Method of Internal Waves Based on SAR
Authors: Li Ting Jun , Ren Jian Cun , Han Jian Li , Zhu Ai Hong , Zhang Hao
Published: April 2011

We all known that using space-borne or airborne SAR can implement the parameters of internal wave, but the automatic method to abstract internal wave parameters from SAR data depend on computer is a practical question without settled. Based on practical application, this paper established automatic detection method of internal waves; through this method we can get the wave’s transmission direction. This method had been checked through multiple SAR data of internal wave and also had been approved validity and utility.
The Removal of In2O3SnO4 Using a Round Bar-Shaped Micro Machining Tool for the Economic Recycling of Defective Displays
Authors: Pa Pai Shan
Published: April 2011

A newly devised process using round bar-shaped electrodes and ultrasonic enhancement in a micro-electrochemical machining (UMECM) process is described. The purpose is the precise removal of In2O3SnO2thin-film nanostructures from optoelectronic flat panel display color filter surfaces. In the current experiment it was found that a large surface area cathode and a small gap-size between the cathode and workpiece was found to remove the In2O3SnO2rapidly. A high feed rate of the workpiece (the display with color filter) and adequate electrical power results in fast machining. Pulsed direct current improves dregs discharge and this is an advantage with a fast feed. A high electrode rotational speed also corresponds to faster removal of the In2O3SnO2nanostructures. The development of the proposed precision production design is based on both technical and economic considerations.
Syntheses and Properties of a Novel Unsymmetrical Photochromic Diarylethene
Authors: Jiang Duo Hua , Wu Mei Ping , Pu Shou Zhi , Liu Wei Jun
Published: April 2011

A novel unsymmetrical diarylethene derivative bearing both phenyl and thiophene moieties, in which a trifluoromethyl group was substituted at the meta-positions of the terminal phenyl ring, was synthesized. At the same time, its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 517 nm in hexane and at 523 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with 297 nm UV light in PMMA. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 395 nm when excited at 295 nm.
Efficient Synthesis, Photochromic Properties and Application of a New Unsymmetrical Diarylethene
Authors: Wang Ren Jie , Xia Hong Ying , Pu Shou Zhi , Cui Shi Qiang
Published: April 2011

A new unsymmetrical photochromic diarylethene compound, [1-(2-methyl-5-(3-fluorophenyl)-3-thienyl), 2-(2-methyl-3-benzothienyl)]perfluorocyclopentene (1o), was synthesized and its photochemical properties, such as photochromism and fluorescence in solution as well as in PMMA amorphous film were investigated in detail. The results showed that the compound exhibited remarkable photochromism, changing from colorless to violet after irradiation with 297 nm UV light both in solution and in PMMA film. Finally, using this dithienylethene as recording medium, polarization optical recording was carried out successfully.
What Factors Affect People's Stickiness on the Social Network Site? The Case of Facebook in Taiwan
Authors: Wu Chao Ming
Published: April 2011

With the rapid growth of population of Internet, social network site has become a communicable platform that people share some information themselves or connecting whit friends, such as MySpace, Facebook, Twitter. This study uses TRA and TAM as basic model, and combined with the Social Identity Theory to explore what factors affect internet users to stick on the social network site. The study adopts the Facebook as experiment platform, and collects 318 Taiwanese samples from internet. After the analysis of structural equation model, main results are the followings: (1)Users’ social identity, perceived usefulness, perceived entertainment, attitude toward a social network site will significantly and positively affect their stickiness on a social network site; (2)Users’ perceived usefulness, perceived ease of use, perceived entertainment will significantly and positively affect their attitude toward a social network site; (3)Users’ social identity will affect their perceived usefulness and perceived entertainment toward a social network site.
A Method for Web Services Fault Tolerance Based on Ripple Effect Analysis
Authors: Yang Dong , Liu Lei , Llinares Manuel Bernal
Published: April 2011

In this paper we first establish a dependency matrix over the inputs of web services in composition and the degree of dependency between the interface parameters for a single web service. Operating over the matrices, the ripple effect of a single service's fault at runtime has been analysed and computed. Based on this, we have looked for a method to substitute the failing service with an equivalent one at runtime. Using simulations and real examples we have confirmed the effectiveness of the method shown in this paper.
Design and Simulation of Emulsion Winch Based on Virtual Prototype
Authors: Zhang Xin , Zang Meng , Liu Xiao Zhe , Wang Zai Chang
Published: April 2011

Aiming at the actual requirement of hauling hydraulic support along coalface, this paper presents a novel hydraulic winch powered by emulsion and detailedly designs mechanical transmission system and hydraulic control system. Based on virtual prototype, the 3-D model of the designed emulsion winch is built by Pro/E software, and interference simulation is carried out. In order to prove strength requirement of key component, the drum is analyzed by means of finite element analysis method and ANSYS software, and the maximum stress is obtained which less than the allowable stress. All this provides theoretical basis for the optimal design of emulsion winch.
Optimum Sintering Temperature for Fabrication of 0.8Bi0.5Na0.5TiO3-0.2Bi0.5K0.5TiO3 Lead-Free Ceramics by Combustion Technique
Authors: Thongtha Atthakorn , Bongkarn Theerachai
Published: April 2011

The effect of sintering temperatures (1050-1200 °C) on the phase formation, microstructure and dielectric properties of a binary system lead-free ceramic bismuth sodium titanate–bismuth potassium titanate were investigated. 0.8Bi0.5Na0.5TiO3-0.2Bi0.5K0.5TiO3; BNKT ceramics were successfully fabricated using the combustion technique. XRD results showed the rhombohedral-tetragonal morphotropic phase boundary (MPB). The SEM results showed the average grain size (0.51-2.59 µm) of the samples increased with the increase of sintering temperatures. The sample sintered at the optimum temperature of 1150 °C exhibited the maximum density, shrinkage, dielectric constant at Curie temperature and remanent polarization (Pr) which were around 5.65 g/cm3, 17.75%, 5014 and 1.6 mC/cm2, respectively. The dielectric constant was related to the XRD results and density of the sintered ceramic.
Cellular Differential Evolution for Optimization
Authors: Hu Gui Wu , Du Xiao Yong
Published: April 2011

This paper is to illustrate the Cellular Differential Evolution with the cellular structure originated from Cellular automata. Cellular neighbor local search has been designed; base vector or global best in mutation operator is substituted by neighborhood-best, which overcomes the weakness of single selection relating to global best, and balances the contradiction of local and global search, and improves the diversity of population. In addition, cellular structure ensures information exchange, inheritance and diffusion. Finally, a specific algorithm has been implemented: compared with similar variants of DE, the simulation results on 9 benchmark functions demonstrate that cellular differential evolutions are provided with obvious advantages in the solution-quality, stability and speed. 
Modular Network in Manufacturing Industry and its Competitive Advantages
Authors: Cao Hong Jian , Zhang Hui
Published: April 2011

There has been a modularization trend in manufacturing industry since 1990s. Modular network is a simpler and more effective way to form complex product system. The information processing in modular network includes information assimilation and information encapsulation. The competitive advantages of modular network lie in Network Externality, back-to-back competition, innovation and anti-risk abilities. The emergence of modular network leads to the change of industrial organization. Adjustments should be made to enterprises’ competition strategies.
Investigating Vocational High School Students’ Cognitive Load of Infusing Nanotechnology into Electronics Subjects
Authors: Dai Chien Yun , Lin Syuan Zih , Yeh Chih Hsiang
Published: April 2011

The purposes of this study were to develop a novel material which was infused nanotechnology into electronics subjects to vocational high school students’with no background in nanotechnology. And then to investigate the cognitive load of them, after they learnedthenovel curriculum pattern. The researchers began todevelop a novel electricsmaterial which is consisted of four chapters includedseven sectionsby experts of electronics, nanotechnology and vocational education. Theexperimentswere conducted by using PPT pedagogy to teach the nanotechnology infused into electronicscourse between twodepartments ofvocational high schools. After four months and four times in one month experimental teaching, cognitive load scale questionnaireand K of KAP scale questionnairewere examined.Finally, the applications of this materialare illustrated that the performances of K scores weresignificant differencebetween electronic engineering department and information engineering department.
A Scalable Heuristic Based on Hypercube Graph for Automated Planner
Authors: Qian Hong , Sui Ming Xiang , Jiang Yun Fei , Zhang Dong Hui , Guo Heng
Published: April 2011

There are much research into Artificial Intelligence (AI) and Semantic Web over the past few years and intelligent behaviour such as learning, analysing, problem solving, planning and abstracting is displayed by modern computer systems. Automatically acquiring domain-knowledge for planning, as it is the case for Machine Learning in general, strongly depends on the training material. In planning, there is a novel ways to search knowledge when solving problems. This Paper presents a new heuristic for carrying out searches of training material, where metadata and the knowledge build into them are captured and fully scalable. These insfrastructure use AI Planning and Ontology technologies, allowing to construct learning rules dynamically based on the general Domain independent Planner even from disjoint learning objects, and meeting the learner’s profile, preferences needs and abilitity. We provide an efficient topology construction and maintenance algorithm, and show how our scheme can be made even more efficient by using a globally known ontology to determine the organization of nodes in the graph topology, allowing for efficient concept-based search.
A Customer Credit Visual Analytics Model Based on Markov Logic Networks
Authors: Chen Zhen Zi , Chen Yi
Published: April 2011

Customer credit evaluation is very important for customer relationship management in Enterprise Resource Planning. However, how to evaluate the customers’ credit is a complicated problem. In this paper, we present a Customer Credit Visual Analysis Model (CCVAM) that can be used to evaluate and classify the credibility of new customers according to the historical data about past customers. The model is based on Markov Logic Networks (MLNs) that combines probability and first-order logic with a weight attached to each formula. In this model, the basic rules or indexes based on expert knowledge are transformed into the representation of normal form. Then MLNs is obtained by combining first-order logic and probabilistic graphical models of the rules. After acquiring the weights attached to the rules in a first-order logic knowledge base, the model provides an interface for visualize the corresponding relationships among the rules and weights. The model has been applied to grade clients’ credit degree in an international enterprise and achieved anticipative results. This model can also be used in other areas where level evaluation is required.
The Research of SiC and Si3N4 Whiskers Reinforced Si3N4 Composites to Improve its Wear and Mechanical Properties
Authors: Yang Lian Wei , Li Jin Hui , Wang Rui Jie
Published: April 2011

To improve the wear and mechanical properties, SiCand Si3N4whiskers reinforced Si3N4composites were sintered by hot press sintering technique at 1800 and 1900°C for 1 h. The Friction and wear behaviors of Si3N4-SiC whisker reinforced Si3N4composites have been studied by using a reciprocating sliding apparatus. The results show that Si3N4-SiC whisker can greatly improve the hardness, fracture toughness and wear resistance of Si3N4. Lower sintering temperature can make both the grain dimension and interface area of the whiskers with the matrix decrease, resulting in relatively uneasy fracture of the whiskers. This uneasy fracture of the whiskers is the main reason for improvement in fracture toughness, and thus, the decrease in wear rate compared with those of the samples sintered at higher temperature and Si3N4material.
Research on Relationship of Electronic Business and Logistics
Authors: Sheng Yu Kui , Lan Wan Lian
Published: April 2011

Electronic business is an emerging business activity. Electronic busines affects commodity trading activities, so it affects logistics deeply. It is important to the development of logistics. Logistics support electronic busines strongly. The rapid and health development of logistics and electronic busines are benefit to each other.
MIDI and Music Teaching in Colleges of Multimedia System Application
Authors: Zhu Jia
Published: April 2011

Computer MIDI and multimedia system in university music teaching application is still at the development phase. Combining with the teaching practice, the articles analyzes and studies some problems focused on computer and multimedia systems in university MIDI music theory in the teaching of practical application.
A Computer-Aided Approach to Undergraduate Engineering Education
Authors: Wang Wei , Jia Shen Jie , Liu Shu Chong , Wang Hui Yan
Published: April 2011

Despite the quality of engineers that still universities are forming, the existing system for educating engineers must change, provides the courses for engineering educators, and a large experience developing and implementing engineering programs, the engineering education research team has decided to develop and to offer a graduation level program for engineers dedicated to education. Through the application of computer-mediated communication educators or instructional designers in the field of engineering with an opportunity to share the ideas and experience of innovating curriculum and instructional methods of engineering education. In this paper, we briefly review the status of engineering education in China. Additionally, we provide details of how these concepts can be used in an educational model, a learning system is also believed to be the stepping stone to one that generates and rewards “active, independent, self-directed learning” for students to gather and assess data rigorously and critically.
Effect of Titanium Particle Size on Osteogenic Differentiation of Bone Marrow–Derived Mesenchymal Stem Cells
Authors: Wu Jiang , Guo Ying Qiang , He Xue Ling , Chen Huai Qing
Published: April 2011

Aseptic loosening induced by wear debris particles of artificial joint is characterized by a considerable suppression of osteogenesis. The objective of this investigation was to determine the effect of different-sized titanium particle on protein synthesis, and mineralization in bone marrow–derived mesenchymal stem cells(BMSCs) induced toward osteogenic differentiation in vitro. Rat bone marrow–derived mesenchymal stem cells (rBMSCs) induced toward osteogenesis were cultured in the presence or absence of titanium particles in varied size, 0.9µm, 2.7µm, 6.9µm, respectively. Flow cytometry characterization of rBMSCs proved 99% homogeneity by using with cell-surface antibody. The bone matrix protein synthesis evaluation showed that three size groups of titanium particles could suppress early, middle, and late markers of the osteogenic lineage, i.e., alkaline phosphatase activity, C-terminal type I procollagen and osteocalcin secretion repectively, in a dose- and time-dependent manner. The least detrimental particle size group was 0.9 μm, which is a reasonable finding as this group is more susceptible to phagocytosis due to smaller size. The cell-mediated matrix mineralization in terminally differentiated cultures by Alizarin Red S assay revealed a reduction in the number and area of mineralizing nodules, even mineralization calcium concentration in BMSCs cultures after titanium particles treatment. Collectively, the data suggest that different size titanium particles alters osteogenic differentiation in BMSCs cultures during lineage progression and provide further insight into wear debris-induced reduced bone formation.
3D Interaction Design and Implementation in Virtual Spinal Fixation Surgery System
Authors: Song Hua Zhu , Liu Bo , Zhao Bin
Published: April 2011

The 3D interaction design solution and implementation with VTK and QT were proposed in the system of virtual spinal fixation surgery. After discussing the background of 3D interaction technology, the principles of the interaction design about 3D interaction used in the system was given. According to the requirement of the system, the observer pattern and command pattern were adopted. And then 3D interactive design based on 3D Widgets was given in detail, the implementation view was shown. Finally, some implementation interface and five kinds of widgets design were displayed.
Kinematic Analysis of Feed-Dog Mechanism in Overlock Machine
Authors: Han Yu Qiang , Li Fei Zhou , Guo Bian
Published: April 2011

The kinematic modeling of 2P-R linkage, which is part of the differential feed mechanism of overlock machine, is built with the method of successive approximation of link length. The mechanism is analyzed with the secant method. The locus curves of center point of feed mechanism, motion curves of execution component are obtained. The performance improvement of the differential feed-dog mechanism is put forward, based on the analysis of variation behavior of feed-dog path. This has great significance for designing overlock machine and improving the working function.
Experimental Study on Dynamic Compaction-Plastics Drain Board Method in Backfill Subgrade Reinforcement
Authors: Ma Yong , Luan Mao Tian , Wang Zhong Chang
Published: April 2011

Plastics drain board method is one of the most effective ways of reducing excess pore water pressure during the process of dynamic compaction in soft soil subgrade reinforcement. Based on field test in neritic backfilled area of Jinzhou Port 207B berth, the pore water pressure, groundwater level, subgrade bearing capacity and time effect of deformation have been measured and analyzed. The application of dynamic compaction-PDB method makes a mighty advance of the dynamic compaction method, which provides a new way for soft soil treatment in coastal areas.
The Analysis and Detection of Double JPEG2000 Compression
Authors: Wang Wei , Wang Rang Ding
Published: April 2011

In order to detect double JPEG2000 compression, through analyzing the different statistical characterization of DWT coefficients between single and double compression, and through analyzing the “filling feature” of the DWT coefficients, we proposed a new method which we called as “Comparing the adjacent value around the maximum” in this paper. Experimental results show that this method is effective.
Energy Environment and Economic Sustainable Growth
Authors: Zhang Li Feng , Liu Qun
Published: April 2011

The question of energy and enviorment is a hot question in the world, it is a hot and difficult problem in China also.To issue the sustainable growth of economy is the problem that all countries in the world care about including our country. So, this text sets up endogenous economic growth model by restricted energy and enviorament and discusses the condion of the economy sustainable development, and obtains the balanced economic growth path and some policy meanings.
Multi-Objective Optimal Approach Based on Kriging Model in a Deep Drawing Process
Authors: Xie Yan Min
Published: April 2011

Sheet metal stamping processes design is not a trivial task due to the complex issues to be taken into account. Therefore, proper design methodologies to reduce times and costs have to be developed mostly based on computer aided procedures. This paper presents a methodology to effectively determine the optimal process parameters using finite element analysis (FEA) and design of experiments (DOE) based on Metamodels. The idea is to establish an approximation function relationship between quality objectives and process parameters to alleviate the expensive computational expense in the optimization iterations for the sheet metal forming process. This paper investigated the Kriging metamodel approach. In order to prove accuracy and efficiency of Kriging method, a nonlinear function as test functions is implemented. At the same time, the practical nonlinear engineering problems such as square drawing are also optimized successfully by proposed method.
A Text Hybrid Clustering Algorithm Based on HowNet Semantics
Authors: Zhu Zheng Yu , Dong Shu Jia , Yu Chun Lei , He Jie
Published: April 2011

Many existing text clustering algorithms overlook the semantic information between words and so they possess a lower accuracy of text similarity computation. A new text hybrid clustering algorithm (HCA) based on HowNet semantics has been proposed in this paper. It calculates the semantic similarity of words by using the words’ semantic concept description in HowNet and then combines it with the method of maximum weight matching of bipartite graph to calculate a semantic-based text similarity. Based on the new text similarity and by combining an improved genetic algorithm with k-medoids algorithm, HCA has been designed. The comparative experiments show that: 1) compared with two existing traditional clustering algorithms, HCA can get better quality and 2) when their text cosine similarity is replaced with the new semantic-based text similarity, all the qualities of the three clustering algorithms can be improved significantly.
Application of CMAC-PID Controller Based FPGA in the Wastewater Treatment
Authors: Li Lin , Shan Yi Xian , Shi Hai Tao , Wang Xin Gang
Published: April 2011

PID controllers are widely used in the Wastewater treatment plants. However the existence of the control disturbance and measurement error may greatly reduce the controller's stabilization, and even lead the control to failure. In order to improve the performance capacity, a new compound control method based on the cerebellar model articulation controller (CMAC) is proposed. We adapt the traditional PID controller to realize the feedback control and CMAC controller to realize the feed forward control. For real-time control, Altera Nios II FPGA (Field Programmable Gate Array) is employed to construct a hardware-in-the-loop system through writing C and VHDL codes on this FPGA.The control results revealed the compound CMAC-PID controller had excellent control performance such as systemic stability, disturbance resistance, fast response rate and small overshoot. It can be concluded that the compound controller is robust, self adaptive and effective.
An Improved Crawler Algorithm Based on Hierarchical Structure Preservation
Authors: Hao Zhi Feng , Zhang Ze Bin , Cai Zhao Quan , Huang Han
Published: April 2011

This paper proposes an improved web crawler algorithm to climb more useful information since the basic web crawler algorithm is low-efficiency and easy to climb useless repeated information. By the proposed algorithm, the website urls are hierarchical saved to store websites overall topology, which will make crisscross complex web URL system from a graphic structure into a tree structure. The actual website BBS experiments show that the algorithm is much better than the basic web crawler algorithm in crawling speed and download information such as the usefulness of baking. Furthermore, it provides a performing structure mode for the increment crawler algorithm.
DDoS Detection and Prevention Based on Joint Entropy and Conditional Entropy
Authors: Gu Yong Hao , Wu Wei Ming
Published: April 2011

Distributed Denial of Service (DDoS) imposes a very serious threat to the stability of the Internet. Compared with many detection approaches, detecting DDoS attacks based on entropy has advantages such as simplicity, high sensitivity and low false positive rate. But the method with single attribute entropy has high false positive rate when detecting attribute forged attacks. This paper presents a detecting method based on joint entropy and a filtering way based on conditional entropy. The efficiency of this scheme is validated with simulation on the research lab network.
Analytic Solutions of a Nonhomogeneous Iterative Functional Differential Equation
Authors: Liu Ling Xia
Published: April 2011

This paper is concerned with an iterative functional differential equation with state-dependent delay As well as in previous works, we reduce this problem with the Schroeder transformation to obtain auxiliary equation. For technical reasons, in previous work the constantgiven in the Schroeder transformation, is required to fulfill that is off the unit circle or lies on the circle with the Diophantine condition. In this paper, we discuss not only thoseat a root of the unity, but also those near resonance under the Brjuno condition.
Research on Impact of Radio Irregularity on Self-Localization of WSN
Authors: Zhang Jia , Zhang Hai Yan , Lv Jin Na , Yin Li Qiang
Published: April 2011

Localization is a vital foundation work in Wireless Sensor Network (WSN). Almost all of location algorithms at present need the position information of reference nodes to locate the unknown nodes. But most of algorithms assume an idealistic radio propagation model that is far from the reality. This will lead to obvious difference compared with real localization of WSN. In this paper we investigate the impact of radio irregularity on the localization algorithms performance in WSN. We introduce the Radio Irregularity Model (RIM) which is established upon empirical data. With this model, this paper analyzes the impact of radio irregularity on localization algorithms. We compare three typical coarse-grained localization algorithms: APIT, Centroid and DV-HOP in simulated realistic settings. Our experimental results show that radio irregularity has a significant impact on some main evaluation aspects of localization algorithms. Some interesting phenomena is worthy of further study.
Informationization Modes Study for Discrete Manufacturing Enterprises in China
Authors: Ren Xiao Jiang
Published: April 2011

The development history and situation of Chinese Discrete Manufacturing Enterprises are reviewed in this paper. Then the problems existed are explained and analyzed from business process prospective. At last, some proper modes based on the process analysis are proposed.