bluuebunny/crossref_metadata_2025 huggingface dataset:
A Study of Airborne Antennas Radiation and Mutual Coupling
Authors: Yang Hao , Li Bo Nian , Luo Ning , Zhang Si Rui , Zhang Shi Jie , Liu Cheng Qiao
Published: February 2014

Radiation characteristics and mutual coupling are the important factors to the integration design and arrangement for airborne antennas. And the study of them is significant to the EMC of airborne electronic systems. Therefore, by using UTD, a study of predicting the far field pattern of a monopole mounted on the fuselage of an aircraft is described, and the method of computing isolation between airborne antennas is referred to. Initially simple model of large airplane is given by the principle that configuration should be simplified while electromagnetic radiation characteristics should not be neglected. Furthermore, single order, two orders as well as higher orders ray tracing are discussed based on the basic modals such as cylinder, taper and flat. The analytical solution of ray tracing is given out when it exists. If the analytical solution of ray tracing doesnt exist, faster numerical searching method is recommended. Then shadow judgment is introduced briefly. Lastly programs are made, and the results are proved true by comparing them with relative referencesv [1].
Study on the Detection of Slurry Concentration in the Thickener
Authors: Zhang Cheng Lian , Zhang Gong Peng , Ma Jie
Published: February 2014

The detection of flocculation in the thickener has a significant impact on the realization of the closed-loop control of the thickener production. In this paper, a slurry concentration detector is designed based on a parallel plate capacitive sensor. The relation between the slurry concentration and the measurement of the capacitive sensor is obtained for mass percentage concentration of the slurry between 5% and 25% through a large amount of experiments. The results are compared and verified by a known relation experimentally and the errors are less than 5%. The reliability of the relation and the feasibility of the detector equipment are verified, which provides a reliable detection method for the realization of closed-loop control of the thickener production.
Overview of Fault Detection and State Diagnosis Technology in Wind Turbine Blades
Authors: Li Rui , Du Wan Li , Shen Xiao Jun , Li Fu Xing
Published: February 2014

The blade is an important component in wind turbines, and the detection and diagnosis of its defects has become an important subject in wind power industry. This paper introduces the principles of the existing methods for state detection and fault diagnosis in wind blades, and then discusses the deficiency of each method. The existing difficulties and some key problems to be solved are also pointed out in this paper. Finally, the trend of its future development has been discussed.
Dynamic Modeling Method for Generator's Excitation System Based on Smart Component Technique
Authors: Li Fu Xing , Zhang Jian
Published: February 2014

The off-line test method which is generally employed in modeling of generator excitation system has parameter lag and does not fully reflect dynamic characteristics. This article established an online identification and dynamic modeling for the excitation system by smart component technique combined with particle swarm optimization algorithm. It studied the principles of dynamic modeling, taking model parameters corresponding to the minimum objective function as the output result of the identification, also set up implementation steps and flowcharts of the parameter identification based on particle swarm optimization algorithm. An example case was given based on the measured data, and the identification results of the case were taken as the set value of the simulation model. The article compared simulation results to the field test data of 5% step response condition. The comparative results indicated that particle swarm optimization algorithm based on synchronization intelligent component data had the ability to adapt to online identification decently and high identification accuracy.
A Method of Constructing Steiner Triple System of Order 2t+1
Authors: Xu Zhao Di , Li Xiao Yi , Chou Wan Xi
Published: February 2014

The basic concept of constructing the Steiner triple systems of order is described. The detinition of edges matrix of the complete graph is given. A method of constructing Steiner triple system of order is proposed. The errtire procedure of constructing Steiner triple systems of orderand is presented respectively, The enumeration problem of Steiner triple systems of order is discussed [1-1.
The Protection and Control Strategy of Series Compensation Equipment in Distribution Network
Authors: Liu Xue Bo , Wei Tong Zhen , Huo Qun Hai , Han Li Bo
Published: February 2014

The voltage stability can be maintained by the series compensation equipment while the voltage sag of distribution system side occurs. The series compensation equipment of cascade H-bridge type has many advantages such as lower harmonic injection into the power system, lower switching losses, easily to be extended and so on. However, due to the complexity of structure and control of the multilevel converter increase the possibility of device failure. In order to improve the reliability of series compensation equipment, this paper analyzes the possible fault type of series compensation devices and combined with the characteristics of different types of faults, proposing a fault diagnosis method for the series compensation equipment of cascade H-bridge type. This method only needs to detect the voltage and current of output side in series compensation equipment, the fault can be successfully dignosed by a certain equivalent and computation .This method is not affected by voltage and current changes, and easy to implement. This device can rapidly diagnosis and remove faults device in continuous operation, then by changing the modulation of inverter makes the series compensation device work normally. The simulation examples proves the validity of this method.
Ro-Ro Turn Dam Coal Transportation Scheme Selection Based on SEM
Authors: Liu Yao , Liu Ting , Ding Li Qun
Published: February 2014

Ro-ro turn dam transportation has advantages of easy to assemble and unassembled, low cost, large capacity, etc. It plays a positive role in relieving the existing pressure of coal transportation, therefore, it is necessary to research the Ro-ro transportation schemes. This paper takes Yanjia-Tian'e line for example, proposed 27 parking spaces, 32 parking spaces, 38 parking spaces, 59 parking spaces and 250t self-propelled shipping for a total of five schemes. It establishes the evaluation index system, do correlation analysis to the data of the questionnaire, analysis of the evaluation factor by Confirmatory Factor Analysis (CFA). Conclusion shows that 59 parking spaces is the optimal solution.
Design and Implementation of Digital Circuit of Multi Level Experimental System Based on LabVIEW
Authors: Tang Zhong Jian , Li Cheng Yong , Zhao You Gui
Published: February 2014

In order to meet the need of modern experimental teaching, improve experiment of openness and flexibility. Constructing digital circuit experiment system, fully embodies the virtual instruments in experimental operation of the advantage based on the virtual instrument technology, LabVIEW. Through the analysis of digital circuit experiment in actual effect of virtual instrument technology, shows the digital experiment system more simple and convenient, and some characteristics of relative stability and performance and experiments small errors and use convenient and save costs etc,so can be widely used in experiment teaching. Not only expanded experiment scope and space, but also can exert students' initiative and creativity.
Study on Classification of Transport Goods for its Transport Attributes Based on Quantitative Theory III
Authors: Chen Yan Yi , Zhang Pei Lin , Liu Tie Xin
Published: February 2014

According to the coupling relationship of goods transport attributes (goods value, transportation forms, transportation batch, volume and weight, transportation distance, transportation risk, container suitability and timeliness) and transport services attributes (transportation costs, time, punctuality, quality, security and frequency ), the transport goods are divided into six categories by Quantitative Theory III: time-sensitive goods, containerized goods, general break-bulk goods, hazardous goods, long and heavy goods , bulk goods. It provides new idea and way to classification of transport goods, which can give reference for other similar researches.
Lung Segmentation in Feature Images with Gray and Shape Information
Authors: Zhang Guo Dong , Guo Yi Fei , Gao Su , Guo Wei
Published: February 2014

Accurate lung segmentation in chest radiography is an important and difficult task in the development of computer-aided diagnosis. Therefore, we proposed a lung segmentation method in feature images with gray and shape information. Firstly, we extracted six feature images, and built an initial shape model. Then, we calculated the gray cost in the feature images. Finally, the lung profile was determined by use of shape restriction. With the feature images and method of shape restriction, the mean overlap rate was improved to 75.60%. Therefore, the method proposed in our study can improve the performance of lung segmentation.
Research and Implementation of Instrument Management System
Authors: Dong Wei
Published: February 2014

To facilitate instrument management at university, we propose an instrument management system in this paper. This new type of equipment management is expected to replace traditional management methods. Although at university the degree of computer information is rather high, the current instrument management methods are very outdated. Even in some universities, related personnel still adopt very primitive method to manage the teaching equipment. However, with experiment science developing and more and more focus on instrument utilization in the teaching process, the amount of teaching instrument grows exponentially, which imposes a new challenge to the traditional methods of teaching instrument. To cope with this problem, we first conduct some research on this problem. Then, based on this research, an online teaching instrument system is implemented, which nearly covers all the needs of the system requirement.
The Research of the Oil Base Drilling Fluid Hard Brittle Shale Sidewall Instability Mechanism
Authors: Zhen Guang Feng , Jing Go Lin , Hu Wei Jie , Liao Bai Sun
Published: February 2014

With the continuous production of the well development, sidewall instability phenomenon has become increasingly serious, mostly occurs in the shale formation, benefit for oilfield produced great harm. Water-based drilling fluid sidewall instability mechanism has been basically clear, the oil-base drilling fluid influence on sidewall stability is not yet concrete. So this paper mainly for oil-based drilling fluid hard brittle shale sidewall instability mechanism research. This article first from the perspective of chemistry, the hard brittle shale borehole wall instability is studied, the experiment tested respectively by the white oil and water treatment of hard brittle shale of cation exchange capacity (CEC) value, so as to analyze the same and the hydration of clay mineral equivalent after processing samples, through analysis of the temperature, time, media's impact on hard brittle shale wellbore stability. Secondly, from the Angle of mechanics, stress and mechanical properties of mud shale formation is analyzed, and the minimum drilling fluid density model, gives a variety of analysis and calculation formula. In addition, this paper adopted the X ray diffraction (XRD)
Research on Production of Dominant Cluster Supply Chain Logistics Capability Based the LD-CED Model
Authors: Ding Li Qun , Li Yong Zhou , Liu Yao , Jin Yang
Published: February 2014

According to the problem that the cluster supply chain enterprise with R & D and production as the leading effectively and manage the customer-oriented logistics service ability, and proposed the elements of supply chain logistics service capability and evaluation method. Firstly, according to the service object and the evaluation of the different point of view, the supply chain logistics service capability is divided into external logistics service ability and internal logistics service capability, and analyzed, and then clear the logistics service capability was customer-oriented external logistics service capability. And then according to the different characters, elements system is established for supply chain logistics service capacity, and as a main character analyzing logistics service capability, supply chain enterprises put forward basic evaluation chain logistics service ability for customer satisfaction for the method.
A Novel Design on Broadband Circularly Polarized Slot Antenna
Authors: Zhu Li , Gao Xiang Jun , Wu Guo Cheng , Wang Guang Ming
Published: February 2014

In this paper, a novel broadband circularly polarized (CP) slot antenna is proposed and fabricated, in which the perturbation configuration with two quarter annular rings fabricated cornerways in the square slot is designed and a simple Photonic-bandgap (PBG) structure is employed. Through simulating and testing, the broad impedance bandwidth of 81.5%(VSWR<2.0) and the 3dB axial ratio (AR) bandwidth of 48.2% are achieved respectively. This slot antenna will be widely utilized in communication field. These instructions give you basic guidelines for preparing papers for conference proceedings.
Research on CT Image Segmentation of Computer-Aided Liver Operation
Authors: Wei Yun Tao , Zhou Yi Bing
Published: February 2014

The segmentation of liver using computed tomography (CT) data has gained a lot of importance in the medical image processing field. In this paper, we present a survey on liver segmentation methods and techniques using CT images for liver segmentation. Generally, liver segmentation methods are divided into two main classes, semi-automatic and fully automatic methods, under each of these two categories, several methods, approaches, related issues and problems will be defined and explained. The evaluation measurements and scoring for the liver segmentation are shown, followed by the comparative study for liver segmentation methods, pros and cons of methods will be accentuated carefully. Here a fully 3D algorithm for automatic liver segmentation from CT volumetric datasets is presented. The algorithmstarts by smoothing the original volume using anisotropic diffusion. The coarse liver region is obtained from the threshold process that is based on a priori knowledge.
Design of Multi-Point Temperature & Humidity Monitoring System
Authors: Li Hai Yun , Ye Da Peng , Weng Hai Yong , Hu Hong Jun , Xu Wei
Published: February 2014

multi-point temperature and humidity real-time measuring system for maitake mushroom cultivat-ing house is constructed by combining micro control unit (MCU), multi-sensors and personal comp-uter (PC). The sensors for measuring temperature and humidity are designed by the rational arrang-ement of DHT11 and the data will be sent to main processing unit through a wireless data transmis-sion module. This system plays important role in making big progress for the industrial production of maitake mushroom.
Design and Application of Digital Filter Based on Calculus Computing Concept
Authors: Zhao Yan Chun
Published: February 2014

Calculus has been widely applied in engineering fields. The development of Integer order calculus theory is more mature in the project which can obtain fractional calculus theory through the promotion of integration order. It extends the flexibility of calculation and achieves the engineering analysis of multi-degree of freedom. According to fractional calculus features and the characteristics of fractional calculus, this paper treats the frequency domain as the object of study and gives the fractional calculus definition of the frequency characteristics. It also designs the mathematical model of fractional calculus digital filters using Fourier transform and Laplace transform. At last, this paper stimulates and analyzes numerical filtering of fractional calculus digital filter circuit using matlab general numerical analysis software and FDATool filter toolbox provided by matlab. It obtains the one-dimensional and two-dimensional filter curves of fractional calculus method which achieves the fractional Calculus filter of complex digital filter.
Path Reconstruction of Intelligent Traffic Based on Positive Feedback System
Authors: Zhang Xue Li
Published: February 2014

Traffic congestion are prevalent in worldwide cities. The imbalance between demand and supply of urban traffic is the root cause of this problem. So taking effective measures to regulate traffic demand, and guiding the traffic problems of the supply and demand balance is the best way to solve traffic congestion. This paper improves the TDM measure, and combines with intelligent information platform for the design of a new urban transport demand management adaptability of dynamic traffic data analysis platform. The platform supported by the technology of wireless sensor communications, intelligent terminals, the Internet and cloud computing is facing with the dynamic needs of traffic flow and traffic congestion state to carry out the operations of spatiotemporal data mining, clustering, and track detection, and to apply it into the traffic hot spots, abnormal driving track, traffic congestion trends and traffic flow detection and analysis, which has a good reference value for the improvement of management and service level of traffic intelligent systems.
Research on Electrical Radiation of Marine Functional Materials Based on Negative Feedback Control System
Authors: Wang Fei , Ding Tian Ming , Song Wei Hua
Published: February 2014

In marine organisms the carbon sink function of shellfish moves in circles. It not only has a great influence on the marine environment, also has the very important significance for the construction of marine ranching to realize the benefits of recycling economy. If the carbon consumption exceeds marine soil and Photosynthesis Carbon input, the marine environment will be subject to different degrees damage, and affect the marine farming production process. Based on this, this paper analyses and studies the shellfish and algae carbon sink function. The first part of this paper introduces shellfish and algae carbon sink regulation function, gives the schematic diagram of carbon cycle, and establishes a column chart through using the preliminary statistical data. The second part establishes the shellfish and algae carbon sink ecological economic system mathematical model in the construction of marine ranching, and gives the adjustment function diagram of ecosystems two coordination function. The third part uses the professional statistical analysis software SAS to draw the shellfish and algae carbon curve of marine ranching construction, which provides theoretical reference for considering the carbon sink function of marine ranching construction.
Electronic Components Thermal Stability Analysis of PCB Plate Based on the Micro Unit Heat Balance Method
Authors: Luo Jian
Published: February 2014

In the thermal stability analysis of electronic equipment, usually we obtain the temperature by quasi circuit method and analytic method. Quasi circuit method is to use the method of circuit analysis, and the heat flux in electronic equipment is simulated into current value in short circuit analysis. The temperature is simulated into a voltage of the circuit. The values of conductance and resistance are simulated into some other valued of circuit components. Analytical method is set space function subordinate relationship value of temperature in electronic equipment. Usually these two methods are desirable, but in the actual design, due to the large computational quantity of quasi circuit method and analytic method, the calculation is complex. Therefore, we combine these methods to solve some traditional disadvantages using micro unit heat balance method, which provides a new method for optimal portfolio.
A Study on Posture Correction Based on Computer Vision
Authors: Cai De Liang , Lin Shao Na
Published: February 2014

During basketball sport, the movement of a joint is quite complex. And if move fast, it is difficult to constrain by fix algorithm the subtle angle changes between joints. Traditional sports vision modeling method is unable to describe the moving changes of the small areas which causes the unsatisfactory measuring effect of subtle posture in motion. This paper proposes a measurement method for three-dimensional motion posture of basketball athletes. It converts the constrained optimization problem for motion parameters as a nonlinear minimization problem by optimizing human motion parameters; uses L-M motion constraints parameter to provide fast convergent regularization method, in order to seek motion and structural parameters matrix of non-rigid basketball sport and complete three-dimensional measurement for motion parameters. The simulation results show that the method can accurately measure the 3D movement parameters of the athletes.
Modeling and Analysis for Optimization Mode of City Bus Operator Scheduling Management
Authors: Liu Yu Jie
Published: February 2014

This paper proposes a bus route scheduling management model based on Ant Colony Optimization and traditional scheduling model. It optimizes the existing bus route scheduling management model according to Ant Colony algorithm, enhances the performance of both Ant Colony algorithm and the traditional scheduling model, and improves the optimal performance of the combining algorithm. The experiment results show that, the proposed algorithm can effectively deal with the bus route scheduling management, and the optimization result obtained is obviously better than the traditional algorithms. Furthermore, it solve the problems exist in the traditional algorithms, therefore has great application value.
New Method for Assessment Ageing Condition of Oil Impregnated Insulation Pressboard Based on Frequency Domain Spectroscopy
Authors: Hao Jian , Fu Jin , Guo Pei , Wu Gao Lin , Wang Qian , Shuai Yuan
Published: February 2014

It is important to assess the condition of the cellulose insulation in transformer. However, taking paper samples from a transformer is both impractical and destructive. In this paper, a new method for assessment ageing condition of oil impregnated insulation pressboard based on frequency domain spectroscopy (FDS) was proposed. The FDS measurements were taken on oil impregnated insulation pressboards with five ageing levels at moisture content of 1.22%, 2.06%, 3.02% and 3.87%. The dielectric loss of all the samples were calculated by tanδ (f) interpolation and the ageing condition assessment database which contains data of five ageing levels and 1%-4% moisture content was built. It is found that the tanδ (f) interpolation is more sencentive to ageing and moisture. It could realize the ageing condition assessment by comparing the tanδ (f) interpolation curve with the curves in the database.The assessing result of the middle-low main insulation life of a 220kV transformer valided that it is effective and time saving to use the new method for ageing condition assessment.
The Establishment and Simulation of a Limited Floating Body Motion Model under High Sea Condition and Replenishment
Authors: Yu Bo , Yu Ying , Li Chao , Zhu Zhen Kun , Taranov Konstantin
Published: February 2014

For the theoretical research on position and orientation errors of two floating bodies with wave action is researched.Effect on two floating bodies which under original constrained state with flexible connections, with ocean wave, is researched based on spectrum analysis method. Then the force and moment model and the motion equation on constrained floating bodies are established. Based on the theoretical results, a simulation of motion on single floating body and constrained floating bodies in the different sea state are proposed. The results showed that: Two floating body established model under restricted state can describe floating body movement and stress state in a number of factors, it can predict changes in the relationship between the position and orientation of floating body. The theoretical results could provide the sound approach on implementation of docking.
A Fast Object Tracking Approach in Vision Application
Authors: Zhang Xiao Jing , Sha Chen Ming , Yue Ya Jie
Published: February 2014

Object tracking has always been a hot issue in vision application, its application area include video surveillance, human-machine, virtual reality and so on. In this paper, we introduce the Mean shift tracking algorithm, which is a kind of important no parameters estimation method, then we evaluate the tracking performance of Mean shift algorithm on different video sequences.
The Interpretive Structural Model of EPC Project Risk Factors
Authors: Wang Jing Min , Li Yan Mei , Zhu Yi Ping
Published: February 2014

Project invested with a type of Energy Performance Contracting has many stakeholders and its structure is complex. Risk factors produced from it are so widespread that its hard to control the risks of EPC project. Analyzing EPC project risks with interpretive structural model, solving reachability matrix and establishing Interpretive Structural Model to identify the relationship between factors and the surface, middle and deep risk factors affecting EPC project based on determination of risks, which provides a reference for policies and measures formulation of the relevant departments.
A Study on the Tolerance Value and Biodiversity of Benthic Macroinvertebrates
Authors: Luo Zhi Wen , Wu Wen Yan
Published: February 2014

Macroinvertebrates are important components of stream ecosystems. A field experiment was conducted to study the effects of substrate particle size, shape, and roughness on the composition and biodiversity of macroinvertebrates. The results show that the particle sizes, porosity, and interstial dimensions of the substrate affect the macroinvertebrate community, while the shape and surface roughness of the substrate do not strongly affect the macrobenthos composition and density. The macroinvertebrate composition in gravel is stable. The density and species richness in the gravels, leaf humus and are much higher than those in the black silt and sands.
An Improved Personnel Evacuation Cellular Automata Model Based on the Ant Colony Optimization Algorithm
Authors: Wang Dan Qing , Gong Qing Ge , Shen Xiao Fei
Published: February 2014

Nowadays, public safety has already attracted great attention, especially when natural disasters and other emergencies happen more and more frequently. So, personnel evacuation simulation research in the populated areas has become one of the core issues to reduce the social damage. To improve the simulation theory, this paper puts forward an improved cellular automata model using some idea of the classic Ant Colony Optimization Algorithm for reference when making rules for the evacuating personnel. And the improved model takes the interaction among the crowd and the influences exerted by the evacuating personnel upon the environment into account. The new model cares more specific details of both environment and the personnel, so it simulates the crowd psychology successfully and provides a more reliable theory that is to expand and improve the cellular automaton simulation model on personnel evacuation.
W-Doped TiO2 Preparation and Photocatalytic Degradation of Guaiacol
Authors: Xie Zi Chang , Wang Ying , Wang Peng , Zhang Lei
Published: February 2014

In this paper, W-doped TiO2 (W-TiO2) powder was prepared in hydrothermal method by mixing TiO2 and ammonium metatungstate. The catalysts were characterized by X-ray diffraction and ultraviolet spectrophotometer. The results displayed that W-TiO2 showed an anatase crystallite structure with 2 % W content. W-element in W-TiO2 was amorphous state. The guaiacol was degraded with the W-TiO2 in the visible light. It was a model compounds of lignin existed in the plant fibers. The degradation rate of guaiacol was increased with the photocatalytic time, as high as 88.21 % after 360 min irradiation. It was concluded that the W-TiO2 had an obvious photocatalytic activity under visible light. It can be used in the photocatalytic degradation of lignin.
Design of Control System Based on Siemens (LOGO!) for Vegetable Greenhouse
Authors: Zhang Shu Ce , Liu Yong , Li Xiao Meng , Wang Xue Jun , Lu Jin Shi , Tao Xue Heng
Published: February 2014

Timely monitoring and controlling light intensity,temperature,air humidity, soil moisture by Siemens (LOGO!) and analyzing and regulating,which comprised the controlling system for vegetable greenhouse. Controlling greenhouse shutter, filling light, moisturizing, dehumidifying and ventilating for vegetables automatically or artificially, the robust growth of vegetables is achieved in relatively appropriate environment in greenhouse.
Study on the Ultrasonic Extraction of Polysaccharides of Barley Rice
Authors: Bi Yong Guang , Li Yu Min
Published: February 2014

The paper discusses the role of ultrasonic time, ultrasonic power, solid-liquid ratio and extraction temperature on the extraction yield of coix seed, the results show that: with the increase of extraction time, extraction temperature with increasing rates of coix seed polysaccharides upward trend, coix seed polysaccharides first increased and then decreased with the increase of the amount of solvent, coix seed polysaccharides and first increased and then leveled off with the ultrasonic power increases, coix seed polysaccharides first increased and then decreased. Compared with conventional extraction methods, ultrasonic extraction of polysaccharides coix seed is fast, solvent savings, save time, extraction rate and so on.
Power Equipment Control in Four-Footed Bearing-Burden Robot Dog
Authors: Wang Jun , He Lian , Zhang You Tong
Published: February 2014

To meet the control demand of power equipment in robot dog, development on control system for robot dog is made. Based on the brief analysis of demand in power and configure in power assembly of robot dog, whole design sketch of control system for power is presented, electronic control system based on MC9S12DP512 microprocessor and neural control algorithm for network structure PID is found. Control algorithm and control effect of control system is verified in experimental bench, experimental results showed that designed control system control effect is stable and it can meet the design requirement in transient speed adjusting and stable speed fixing.
Image Segmentation Algorithm Research for Sport Graphics Based on Artificial Life
Authors: Qi Jian Min , Liang Guo Ying
Published: February 2014

In this paper, linking with the basic principle of artificial life for image segmentation, on the basis of theory research, the segmented partitions emerge when the state of the lives reaches an equilibrium. The artificial life approach is promising in image processing because it is inherently parallel and coincides with the self-governing biological process. The final segmentation result is achieved at last. The experiments demonstrate the feasibility of the artificial life approach on both intensity images and color images. The experiment results prove that in the view of the sport image segmentation, this algorithm provides fast segmentation with high perceptual segmentation quality.
Enhancement Algorithm of Color Fog Image Based on the Adaptive Scale and S-Cosine Curve
Authors: Gao Yin , Yun Li Jun , Shi Jun Sheng , Cheng Fei Yan
Published: February 2014

To deal with the image contrast and color fidelity details problem in the traditional Center around the Retinex image enhancement algorithms, Enhancement algorithm of color fog image based on the adaptive scale and s-cosine curve is proposed. Firstly, the image is transformed into the RGB color space. Then the each channel pixel values can be stretched the grayscale range by S-cosine curve and introduces the local correction function. It can calculate the scale of the Gaussian kernel, and then proceeds to do the Gamma correction for the estimates of the reflection component, obtains the multi-scale image by the weighted average. Afterwards, the obtained image is used to global nonlinear correction, image sharpening and smoothing, and being superimposed reflection components, achieving the image enhancement. At last, it can carry on the intensity adjustment and grayscale adjustment for the obtained image. Through the subjective observation and objective evaluation, this algorithm is better than the traditional center around Retinex algorithm and MSRCR algorithm in processing effect.
Fluid Model Driven by an M/M/1 Queue with Set-Up and Close-Down Period
Authors: Wang Fu Wei , Mao Bing Wei
Published: February 2014

The fluid model driven by an M/M/1 queue with set-up and close-down period is studied. The Laplace transform of the joint stationary distribution of the fluid model is of matrix geometric structure. With matrix geometric solution method, the Laplace-Stieltjes transformation of the stationary distribution of the buffer content is obtained, as well as the mean buffer content. Finally, with some numerical examples, the effect of the parameters on mean buffer content is presented.
Modified Worst Case Response Time Analysis of CAN Bus Consisting of Nodes with Buffers
Authors: Jin Wen , Chen Xi , Zhang Hui Qun
Published: February 2014

Worst case response time analysis of CAN Bus is the de facto method for evaluating the real-time performance which is a key feature of industrial bus. Compared with WCRT which aimed at nodes without buffer, a modified algorithm was presented to calculate the response time of CAN Bus consisting of nodes with both hardware and software buffers. The modified algorithm introduced local blocking time to describe the effect of buffers on response time. Based on the analysis of the different structures between hardware and software buffers, modified WCRT calculation methods of messages in hardware or software buffers were presented. Then the WCRT analysis of the whole system was obtained by consolidating the response time of node and bus. Results show that the response time calculated by the modified method is much longer than that calculated by the traditional WCRT. The modified method makes the WCRT analysis more coincident with the application of engineering, which helps the design and optimization of CAN based industrial bus.
A Simple Finger Stimulator for Simultaneous Vibration and Heat Stimulation
Authors: Kim Hyung Sik , Choi Mi Hyun , Hong Sang Pyo , Lee Jung Chul , Park Sung Jun , Jeong Ul Ho , Chung Soon Cheol , Yi Jeong Han
Published: February 2014

In this study, we developed a simple finger stimulator that can simultaneously control vibration and heat stimulation. The newly developed stimulator consists of three parts, namely the control unit, drive unit, and an actuator. The control unit controls the stimulation type, frequency, intensity, and time. The drive unit amplifies the stimulation signal that drives the actuator. The actuator displays the vibration and heat stimuli quantitatively and simultaneously. Although the developed stimulator is simple, it has a wide frequency range of 0-400 Hz comprising 40 levels, and vibration stimulation intensity comprising 50 levels. The control temperature and stimulation temperature used for heat stimulation comprise four and eight levels, respectively. In addition, the developed stimulator has many advantages in terms of the overall system, stimulation control, and safety. Therefore, the developed stimulator can be used for integrative tactile perception and cognition studies on various vibration and heat sensations.
Fear Enabled Security System Using Spectroscopy, Sensing & Imaging
Authors: Dutta Bahnisikha
Published: February 2014

Crime rates especially atrocities involving women have been ever increasing. Even in the presence of technologies like cell phones, tablets; people can hardly make use of them in their hour of need to prevent or at least halt misfortunes because of the promptness which such situations demands. This paper proposes a solution for maximizing the usage of technology in preventing crimes such as rape through the development of an automated system that will be able to gauge fear of a prospective victim and click pictures of the prospective criminal (s) and send them along with GPS coordinates or location information to the nearest police station and the relatives of the prospective victim. The proposed system can also be useful in aiding anti-theft systems in houses and stores.
Context Representation and Reasoning Based on Spatial Objects for Smart Space Service
Authors: Rhee Sang Keun , Lee Kangwoo
Published: February 2014

Within a smart space where users are provided with proactive services and enhanced interaction experiences, context-awareness is one of the fundamental requirements. Upon representing and deriving higher-level contextual knowledge from sensory observations, especially where the target environment involves physical spaces and objects, their spatial characteristics are the major elements for monitoring and understanding meaningful contexts and their changes. This paper outlines our context representation and reasoning approach based on spatial objects, along with a layered knowledge model for contextual knowledgebase and the reasoning process for higher-level context generation.
Power Allocation and Relay Selection Algorithm in Multi-Relay Amplify-and-Forward Networks
Authors: Zhou Zhi Kang , Zhu Qi
Published: February 2014

In this paper, an amplify-and-forward (AF) multi-relay network is considered. In order to minimize the system outage probability, a new power allocation and multi-relay selection algorithm is proposed under total power constraint and each node power constraint. In the proposed algorithm, the ideal of ordering is adopted, which leads to the remarkable decrease of the computation complexity together with simple power reallocation. Simulation results show that the proposed multi-relay selection algorithm performs close to the optimal scheme with optimal power allocation and exhaustive search (OPA-ES) but with much lower complexity.
The Influence of Cetane Additive on Diesel Oil Performance
Authors: Liang Chao , Chu Ya Xu , Zhang Jian
Published: February 2014

The production of mesothermal coal tar dutrey oil cetane number is low grade, heavy fraction is too much, and will affect the use of the product range. Generally only used as a boiler fuel, not as a diesel engine fuel. By adding a cetane number of Heavy Dutrex by join cetane additive, can increase the cetane number of Heavy Dutrex oil and accelerate the burning rate of Heavy Dutrex, improve thermal efficiency and emissions of combustion quality, the use of diesel engines to meet the needs.
Study on Delay Synchronizing Rectification Control Method of Bi-Directional DC-DC Converter for Photovoltaic System
Authors: Zhang Chun Long , Wu Bin
Published: February 2014

A novel photovoltaic (PV) system is proposed, which exhibits the advantages of better protection and more efficient control on charge/discharge of the battery. Furthermore, it can realize power management of the system. The key point of power management is how to control the bi-directional converter effectively. Considering traditional soft start strategy would be ineffective for bi-directional converter in the double sources application for the possibility of damaging the power device, a new soft start control method named delay synchronizing rectification control method is proposed. A 500W prototype converter is built to verify the theoretical analysis and the control method.
Design of Adaptive Precision Power Supply Based on STM32
Authors: Qu Bo , Gu Hui Juan
Published: February 2014

Two independent 0-10V programmable power supply and protection system are introduced in this paper, using ST 32bit processor STM32F103 as the control chip to receives the voltage output command of the PC, In order to achieve the purpose of stable output, through continuous output sampling for multiple sets of data. use curve fitting algorithm and the dichotomy successively for adaptive adjustment. This scheme also uses the software protection and hardware protection double insurance design, to ensure that the safety of power supply and the electric appliances.
The NFE Model and its Convergence
Authors: Zong Hua , Qi Jia Ran , Fan Shao Wei , Qiu Jing Hui , Wu Qun
Published: February 2014

A tightly-coupled NFE model combined with Neural network, Fuzzy reasoning and Expert system is constructed in this paper based on the neural network-fuzzy reasoning model by introducing expert system technology. The structure and modeling process of the generalized model are presented, and it is derived in theory that this model possesses convergence property and can be regarded as a category of complete information fusion model.
Based on Grey Relational Analysis Research on Fabrication Parameters of Polypropylene Part by Selective Laser Sintering
Authors: Qin Xu , Zhang Jian
Published: February 2014

In the modern manufacturing the 3D printing technology is the largest reform. The Selective Laser Sintering (SLS) occupies a special place in a hierarchical manufacturing technology. In the SLS process the shrinkage brought the ports size decreased and caused the warp. The fabrication parameters in SLS process played a major influence on the molding accuracy. With the sintering process of Polypropylene composite powder, the fabrication parameters were investigated. Through the gray relational analysis to manipulate the test date about the warp and molding accuracy, we could determine the impact of the most important factors molding accuracy. The result showed that about the warp and molding accuracy the most important parameter was the scan speed, followed by laser power.
Research on a New Type of Plating Power Supply
Authors: He Yi Hong , Yu Shui Yong
Published: February 2014

Viewing the problems of lower power factor, high harmonic content, lots of switch losses in tubes of lagging bridge arm when using FB-ZVS-PWM converter in plating power supply, this paper applied the three-level PWM rectifier technology to electroplating power supply, A new converter has been researched. Both different converters have also been compared and analyzed. Phase shift pulse generator and simulation models have been established in Matlab/Simulink. The results show that the PS-FB-ZVZCS PWM converter is more suitable for plating power supply, phases of current and voltage are synchronous, it has the advantages of higher power factor, low harmonic content. All the switch tubes have achieved soft switch, reducing the switch losses, it can improve the efficiency and its performance effectively.
Design of Illumination Intensity Measure Instrument
Authors: Song Wei , Meng Zhi Yong , Chen Shu Wang
Published: February 2014

Photoelectric detection technology is a kind of new technology of non-contact measurement in terms of the modern photoelectric devices such as laser, infrared ray and optical cable. Through the detecting on the radiation with the information of the detecting objects and extracting the useful information by the input circuits, inputting LED from the A/D interface, and then the parameters such as geometric quantity or physical quantity are displayed. The design of illumination intensity measure instrument is based on photoelectric detection technology. It receives the incident light through the photodiode and converts the light energy into electrical energy. Have been filtered and amplified, the current is converted into digital value by the ICL7106 A/D converter, and the accurate data is displayed on the LED digital tube. So the data is the value of Illumination intensity at the moment.
Suspended Four-Dimensional Motor-Driven Adjusting Mount Structure with High Resolution
Authors: Wang Jin Song , He Xiao Xuan , An Zhi Yong
Published: February 2014

Optical components require multi-dimensional adjustment when being accurately detecting its surface shape.The most of existing adjusting mounts are hand regulation that their efficiency and resolution are lower. Against this situation,a motor-driven four-dimensional adjusting mount which is high resolution and stability is designed. An experiment against the whole structure and the static analysis of key component were carried out. Analysis and experimental results show that the the four-dimensional adjustment mounts can realize the translation adjustment in X, Y direction and the angular adjustment indirection. The angular displacement resolution is and linear displacement adjustment resolution is when the load is 37 kg.
Partial Discharge Characteristics of GIS
Authors: Wang Zhi Hui , Gou Lin , Wang Xin Ming
Published: February 2014

Gas insulated switchgears (GIS) occupy an important position in the power system. Insulating spacers surface discharge is an important factor to the safe operation of GIS. The authors set up different insulation defect models in insulator surface and use the UV camera to observe the surface discharge phenomena, we have obtained the following conclusions: (1) the photon numbers increase with increasing length of the models, however, there are many repetitive experiments show that it has saturation characteristic ;(2) When the same kind of simulation insulation fault in different position, the initial discharge voltage is different, photon numbers under the same voltage also is put in bigger difference;(3) When the distance between insulation defect models and bar is more than 6 cm, the discharge decreased significantly under the same voltage, and the ultraviolet photon numbers decreased significantly. These conclusions is helpful to following in-depth study of insulator surface charge characteristics, and provide the certain basis for the scene detection of GIS partial discharge.
Modeling and Simulation of Combustion Chamber
Authors: Duan Run Ze , Chen Zhi Ying , Yang Li Jun
Published: February 2014

The work process of oil fuel burner consists of atomization and combustion of oil. In this process, different atomization and air-distribution methods would affect the quality of combustion and then bring out problems of life-span of the burner, energy efficiency and environmental pollution. Therefore, in this paper, different air distribution devices and different sizes of nozzles are designed, and the numerical simulation software, Fluent 6.3, was employed to simulate the flow field of different conditions in combustor,. Through the simulation, the best work condition was achieved, which could help to provide optimization design parameters of the combustor.
Air Conditioning Units Optimize Control Strategy Based on Multi-Objective Optimization Evolutionary Algorithms
Authors: Xu Bing , Xu Cheng Qian , Shi Zhong Jin , Zheng Bao Guo , Zhu Xue Han
Published: February 2014

In order to reduce the energy consumption of air conditioning systems, the best running model is adjusting the humiture according to actual needs of environment and groups.This paper take out a control strategy based on the Multi-objective Optimization Evolutionary Algorithms.With cntrol simulation, it achieve the energy saving effect in air conditioning units groups, proposed multi-objective optimization control strategy.
The Energy-Saving Control of Combined Multi-Unit for Building Automatic System in the Subway
Authors: Shi Zhong Jin , Xu Bing , Zheng Bao Guo , Zhu Xue Han
Published: February 2014

Multi-unit operation in building automatic system (BAS) is an important part for the equipment operation; it is essentially a distributed multi agent system (MAS). In this paper, Petri net is adopted to establish the control model about the equipment operation in BAS, know the operating characteristics and start-stop conditions of energy consumption equipment in the rail which are in under different circumstances. Based on the analysis of BAS and the theory of distributed intelligent systems, according to the actual environment and energy requirements, the start-stop arrays are selected dynamically as the basis for the units operating, and ultimately achieve energy-saving operation of multi-unit control purposes.