bluuebunny/crossref_metadata_2025 huggingface dataset:
The New Progressive Polymeric Materials for the Reduction of VOC in the Woodworking Industry
Authors: Ružinská Eva , Wilkowski Jacek , Mitterová Iveta , Zachar Martin
Published: January 2015

The paper deals with the preparation of new type of progressive polymer blends created from bicomponent synthetic fibres (PP/PA6) with addition of interfacial agent maleine-anhydrid (MAH) and polymeric mixtures with varying content of the polyamide component for the purpose of subsequent production of a highly efficient filters for collection of hazardous chemical (VOC) in processes surface finishing and treatment of wood products. Morphological parameters were studied in relation to the supramolecular structure of the mechanical properties and the specific rheological characteristics in terms of their experimental process of spinning of bicomponent fibres.
CATIA-Based Strength Analysis on Key Components of Large Bulb Turbine
Authors: Tian Lei , Jin Yong Xin , Shi Jian Wei
Published: January 2015

Tubular hydropower station is a better way in the development of low-head hydraulic power resources. More and more people begin to study the tubular turbine in depth with the development of hydraulic power recourses in the direction of low head and large capacity. With the unique structural features and adaptive head range of tubular turbine, its development is very fast in recent years. The strength analysis of a tubular turbine is an important research aspect with the increasing of its capacity. Bulb turbine is one of the main types of tubular turbines. This paper uses CATIA software and finite element analysis to analyze and calculate the strength and deformation of key components of a bulb turbine, so as to ensure the bulb turbine's safe and reliable operation.
Design of a Compact Bluetooth and UWB Antenna for Wireless Communications
Authors: Feng Hui , Mao Hong Bao , Long Guang Zheng
Published: January 2015

A compact and planar dual band antenna for Bluetooth and ultra-wideband (UWB) is presented. The antenna exhibits a dual band operation covering Bluetooth (2.4-2.484 GHz) and UWB (3.1-10.6 GHz) frequency bands. It is composed of a semi-circular and an L-shaped strip and fed by a microstrip line and built on a FR4 substrate with only 23 × 35 mm2surface area. Details of the antenna design and measured results are presented and discussed.
Video Analysis of Conflict Situations at Cross Intersection with Cranked Priority
Authors: Petru Jan , Krivda Vladislav , Mahdalova Ivana , Skvain Vaclav
Published: January 2015

The article deals with a description of methodology of video analysis of conflict situations, which is used for monitoring and evaluation of road users’ behaviour with usage of video. This methodology is taking e.g. for safety inspections on roads in Czech Republic. In this article, there are also presented results of analysis of conflict situations at concrete cross intersection with cranked priority.
Analysis on Construction Control about Main Cable System of Cableway Bridge
Authors: Yang Guo Jun , Hao Xian Wu , Yang Ji Peng
Published: January 2015

Cableway bridge is a type of suspension bridge which mainly depends on the cable to suffer the force. The method of calculation unstressed length by parabolic method is introduced in this paper, and the form finding analysis of main cable is also analyzed, thus the method of calculation vector height of middle cross and cable force is concluded. Finally, the relationship between vector height and cable force is fitted based on the practical engineering, bedsides, the error is analyzed between design value and measured value, which comes to the conclusion that measured value is good agreement with design value.
Durability Evaluation of Frost-Resistant Concrete Modified with Additives
Authors: Rajczyk Jarosław , Halbiniak Jacek , Langier Bogdan
Published: January 2015

The article presents the influence of the addition of microsilica, finely divided sodium bentonite and air-entraining admixture for concrete frost-resistance and characteristics of examined concrete pores. Examination of frost-resistance was conducted for 150 cycles of freezing and thawing. For selected series of concrete the examination of the porosity structure of concrete composites was conducted with the use of a device for automatic image analysis and computer program Lucia Concrete. What is more, there was made a designation of: consistency of concrete mix, air content in concrete mix, compression strength, water penetration depth and concrete absorbability.
Research on Motion Characteristics and Formation Mechanism of Debris Flow
Authors: Xu Ji Wei , Zhang Ming Dong , Zhang Mao Sheng
Published: January 2015

On July 9 2013, debris flows occurred around Longchi town with large scale and wide harm, which was a great threat to people's life and property as well as reconstruction work. Debris flow ditch in the surrounding town was studied. This paper focused on loose materials, topography and rainfall characteristics, and explored the formation mechanism of debris flow in Longchi town. The result shows that: a small catchment area in valleys also have the risk of large range of accumulation of debris flow, the debris flow is caused by a lot of loose materials in mountains after earthquake and extreme rainfall. Research results contribute to a better understanding of trigger condition of debris flow after earthquake.
The Influence of Bridge Length on Failure Patterns of Specimens Containing Two Coplanar Cracks under Uniaxial Compression Load
Authors: Jin Jin , Cao Ping , Liu Jie
Published: January 2015

Unixial compression tests have been conducted to investigate the influence of bridge length between two collinear cracks on the specimen strength and fracture patterns. Based on the local connectivity rate of cracks, the evolution of the fracture patterns of the bridge is illustrated. It can be concluded that the sensitivity of the strength to the bridge length is reduced as the connectivity rate, L, is higher than 0.8. The fracture pattern composed of tensile and shear fracture will be induced in rock bridges when the bridges are short. Wing cracks develop well as the distance between prefabricated cracks increases, however, the fracture events caused by the conjunction of the secondary cracks are restrained.
Observation on Single Fiber Pull-Out Testing of Carbon Fiber Concrete with Scanning Electron Microscopy
Authors: Wu Jing , Xu Ai Qin
Published: January 2015

The destruction mechanism of carbon fiber cement was studied by Scanning Electron Microscopy with single fiber pull-out testing. The result showed that the interfacial strain increasing is accompanied with fiber pull-out, fiber fracture and interfacial debonding, which provides a basis for the analysis of numerical simulation.
Reliability Analysis on Load-Bearing Capacity of Axially Loaded of Recycled Aggregate Concrete-Filled Steel Tube
Authors: Yang Rong Hua , Mai Gao Bo
Published: January 2015

The first degree second order moment method (JC method) is applied to analyze the reliability of recycled aggregate concrete-filled steel tube (RACFST). Several performances are studies, which are the influences of different load combinations, specific values of loads,confinement coefficients and recycled coarse aggregate replacement percentage on the reliability of the column. It is found that the reliability index varied with the load combination and specific value of loads. The analytical results indicate that the reliability index of the round steel tube is higher than square steel tube and the influence of recycled coarse aggregate replacement percentage can almost be ignored It can be concluded that the formula had great influence on reliability index and the revised formula can meet the requirements of the ductility of structure reliability.
Structural Responses of Recycled Concrete Beams under Room Temperature
Authors: Cui Wen Xiao , Chen Zhong Fan
Published: January 2015

Three full-scale reinforced supported beams with different recycled coarse aggregate percentage were researched and compared in order to research their structural responses under different temperature. This paper investigated the impacts of recycled coarse aggregate on the strain of concrete, deformation and the bearing strength of specimen. The experiments show that the flat section assumption is available for RAC components. Besides, the failure force of RAC components is slightly poorer than that of NAC component. By analyzing a large number of studies, the predictions of bending failure strength and deformation of RAC specimen according to the code for design concrete structures (CDCS) are compared with the experimental results. Besides, the bending performances under room temperature and fire were compared.
Study on Macroseismic Response of an Special-Shape Concrete-Filled-Steel-Tube Arch Bridge
Authors: Huang Guo Ping
Published: January 2015

It is extremely complex for the seismic response of special-shape Concrete-filled-steel-tube arch bridge under severe earthquake, mainly in: the structure may enter elastic-plastic working state and nonlinear border, etc., with regards to this, the elastic-plastic beams unit of concrete-filled-steel-tube is introduced, using different boundary processing modes and establishing three different Midas finite element models. According to the second-level requirements of seismic probability level, regarding the artificial seismic waves as seismic input wave, it is carried out the three-dimensional seismic response of arch bridge. The results is showed that it have not yet entered elastic-plastic work scope for structure under E2 action of earthquake and the special-shape concrete-filled-steel-tube arch bridge is with the features of light deadweight and good seismic behavior.
Research on Chloride Diffusion Model of PC with Chloride Attack in Marine Atmosphere Zone
Authors: Chen Yu , Xu Jie , Liu Rong Gui , Chen Su Bi , Gao Yuan
Published: January 2015

Based on the existing studies about chloride ion erosion in prestressed concrete structures, this paper intends to discuss the effects of the stress level and environment factors (including temperature and humidity, etc.) on chloride ion diffusion under marine atmosphere zone. The investigation from pre-stressed concrete crossbeams which service for 39 years in Lianyungang Port shows the chloride ion concentration distribution and chloride ion diffusion. According to the chloride ion concentration distribution, it finds that chloride ion concentration values in pre-concrete structures is Cmax,1> Cmax,2. In addition, the free chloride concentration distribution values go down smoothly after the second peak. Therefore, the result shows that the improved model can be used in marine atmosphere zone.
Wooden House from Natural Renewable Materials
Authors: Kucerova Lucie , Trajkov Radim
Published: January 2015

The article deals with the issue of wooden buildings in terms of their critical details. Specifically, the details such as the bottom corner in connection with the foundation and the external wall corners or at the level of spatial bracing. Incorrectly performed details may considerably affect the properties of the whole structure both in terms of thermal technical engineering and mechanical stability. In particular, the condensation of water vapor in the construction may cause serious problems.
Elastic-Plastic Seismic Response Analysis on the Special-Shaped Chimney
Authors: Liu Huan Qin , Li Wei Bin , Wu Ruo Yang , Yan Lin Fei
Published: January 2015

Based on one 240-meter-high special-shaped RC chimney, the structure’s dynamic performance and elastic-plastic seismic response analysis has been studied in detail. From the analysis, it demonstrates the weak areas in the chimney. The interlayer displacement angle about corresponding performance points under four kinds of loading mode were also acuired, and the response of four loading patterns were analyzed.
Weight Analysis of Accident Factors in Deep Foundation Excavation Based on Analytic Hierarchy Process
Authors: Yang Zi Sheng , Liu Jun Xia , Wang Yi Ren
Published: January 2015

For the past few years, great development has been achieved in deep foundation excavation. However, due to foundation excavation’s locality, individual diversity, complexity and uncertainty, the probability of accidents in foundation pit engineering tends to be greater than that in main works, and the accident rate may even reach about 20%, which makes the study on factors leading to foundation excavation accidents quite necessary and meaningful. By use of Analytic Hierarchy Process (AHP), this paper has figured out the ratio (weight) of the investigation, design, construction and other factors leading to foundation excavation accidents to the whole factor set, which is of great guiding significance to the study on prevention and treatment of foundation excavation accidents in future.
Ride Comfort Simulation of Minibus under Road Random Input
Authors: Li Jie , Zhang Zhen Wei , Chen Shao Wei , Zhang Chu Xu
Published: January 2015

The plane vibration model of minibus with 7 DOF is used to study ride comfort of minibus under road random input. The system frequency response characteristics based on the road input of front wheel is derived with the analysis method in frequency domain. The frequency response function, power spectral density and root mean square value of vibration response variables are determined. Ride comfort simulation software for minibus under road random input is developed with Matlab and applied to ride comfort analysis of a minibus under road random input. The results show that ride comfort of the minibus is better in the case of full load and road Class B at the speed of 70km/h.
Sequential Quadratic Programming Method of Cabin Optimization
Authors: Liu Han , Song Fang Zhen , Li Ming Ming , Song Bo
Published: January 2015

The basic principle of sequential quadratic programming method and the concrete implementation steps in MATLAB are expounded. Sequential quadratic programming method is used for the cabin structure optimization. In the optimization, the minimal sizes of components stipulated by the rules are used as size constraints, the frequencies required by the rules are used as performance constraints and the minimum lightness of the ship are used as objective. Finite element analysis of the ship structure optimized is done and the results obtained show that both the maximum equivalent stress and the maximum shear stress meet the requirements and first three order frequencies of the cabin structure are also far away from the working frequency of propeller and host. The optimization reduces the weight of the cabin under the condition of meet the static characteristic and dynamic characteristic.
Finite Element Modal Analysis and Size Optimization of Annular Piezoelectric Resonator
Authors: Liu Xi Wen , Liu Chao Ying
Published: January 2015

The analysis model of ANSYS finite element for annular piezoelectric resonator is built in this paper, and experiments are carried out for verifying the validity of the finite element model. The influence of the piezoelectric resonator's sizes on the natural frequencies is discussed; and the optimization for the piezoelectric resonator's sizes by using ANSYS is carried out, in the optimization procedure, the piezoelectric ceramic volume is made minimal while its first order natural frequency is kept in a range. These researches provide a theoretical basis and effective way for piezoelectric resonator design and optimization.
Study of Ozone Decomposition Using TiO2-Graphene Composites
Authors: Tan Xin , Shang Qian Qian , Wang Si Yu
Published: January 2015

Graphene (Gn) were prepared by reduction of graphite oxide (GO), which was obtained from oxidation of graphite powder by a modified Hummers method. The composite of titanium dioxide/graphene (TiO2/Gn) was synthesized using tetrabutyl titanate and GO as the precursors by a sol-gel method. The ozone photodecomposition efficiency of TiO2/Gn was operated under ultraviolet-visible (UV-Vis, λ>365nm) light irradiation. Results showed that as-prepared TiO2/Gn composite exhibited photodecomposition efficiency of 66.12% under UV-Vis light irradiation 1h with the initial concentration of 0.150ppm-0.200ppm, preliminary larger than that of pure TiO2(25.95%), self-photolysis of ozone without photocatalysts (1.33%). The effects of initial concentration of ozone and photodecomposition mechanism were discussed.
Frequency Spectrum Estimate Based on FLOS in Various Radar Clutter Noises Environments
Authors: Li Peng , Xie Hui Cheng , Wang Hai Bin , Long Jun Bo , Zha Dai Feng
Published: January 2015

It is very important that radar clutters are distinguished from others exactly when radar working in a complex environment. A new method named square convergence was proposed to classify radar clutter noises. The performance of conventional spectrum estimate algorithms based on second order statistic (SOS) degenerate in stable distribution environment, auto-covariation and auto-covariance methods based on fractional lower order statistics (FLOS) were proposed in this paper. The simulation results showed that the proposed FLOS methods were robust.
RFLP Analysis of Soil Microbial Diversity Chromium Contaminated Soil Remediation Process
Authors: Yang Jing Po , Lu Fei , Luo Jian Mei , Chen Jing
Published: January 2015

Chromium contaminated soil restoration has been an important environmental restoration research. Changes of microbial diversity repair, repair tools can reflect the interaction with microbial interaction effect. The experiment uses a different repair methods chromium contaminated soil restoration for the study, using PCR-RFLP study the relationship between chromium contaminated soil remediation technology and changes in bacterial communities.
New Method of Optimal Deployment of Radar Network
Authors: Cui Yu Juan
Published: January 2015

In order to improve the detection performance with the limited radar resources in the given defense zone, it is necessary to make reasonable and effective deployment of radar network. According to the principles of radar network deployment, its mathematical model is established at the beginning. And then, on the base of the shuffled frog leaping algorithm (SFLA) principle, a new method-improved shuffled frog leaping algorithm (ISFLA) is introduced through the technique of algorithm hybrid. By integrating updated strategy and chaotic optimization into SFLA, it greatly enhances the local searching efficiency and global searching performance. Moreover, the frogs are divided into two types and perform different operations to co-evolve. Finally, by analyzing an example and comparing the results with those algorithms, it comes to a conclusion that several network schemes can be obtained much more quickly by this way with better operability.
Research on Automatic Tracking of MCS Based on Infrared Satellite Cloud Image of FY2D
Authors: Duan Lian , Wu Jun Jie , Liu Fan
Published: January 2015

Mesoscale convective system (MCS) has a great influence on the air flight, this article used infrared cloud image data detected by FY2D static satellite, through TBB and area threshold found the MCS from cloud image, then calculated and analyzed the adjacent period of MCS’ cloud area ,centroid position, the development strength and some other characteristic changes to test whether it meet the targets matching principle, finally, discriminated whether the signed cloud were the same target cloud so as to realize the automatic tracking of MCS.
Study on the Preparation of Oil-Coal-Water Slurry
Authors: Qi Hui Li , Gai Ke , Ma Dong Ping , Zheng Bo
Published: January 2015

This paper presented a method of a new kind of triplex mixture system of oil-water-coal slurry preparation.Triplex synfuel containing gasoline, water and coal was prepared using nonionic surfactant. Tween 80 was used as emulsifying agent. The ratio of water, gasoline and coal was optimized. The optimum prescription of oil-water-coal slurry was obtained by means of orthogonal experiment. Results showed that stable triplex mixture systems were prepared with the ratio of the components of coal (C) to water (W) to oil (O) by weight was C:W:O=45%:30%:25% when 0.2% Tween 80 were added into the system. Rheological properties of oil-water-coal slurry were also investigated.
Droplet Mobility Actuated by Surface Acoustic Wave
Authors: Li Yi Gui , Zhang Jun Feng
Published: January 2015

Droplet mobility actuated by surface acoustic wave (SAW) was demonstrated in this paper. On the surface of the LiNBO3substrate, pairs of copper inter-digital transducer (IDT) were fabricated to generate Rayleigh wave at different radio frequency (RF) voltages. The various droplet motions, such as mixing, flowing and atomization were analyzed by adjusting pulse frequency and input power. The experimental results demonstrated that the SAW could function as an atomizer when the input power was higher than 25W. Based on fundamental experiments, a novel driving curve for micro droplets under different driving power was obtained as well.
Research on the Orthogonal Test of Spot Welding Parameters of Power Battery Packs
Authors: Yang Jian Dong , Tian Chun Lin , Hu Hai Yan , Yan Hui
Published: January 2015

Due to the complexity in the process of the welding, the welding parameters selection and reasonable matching will influence the quality of the power battery joints. There are not specific mathematical models between the welding parameter and the welding quality in the current period and the selection of the welding parameters is only depended on experience. In this paper, the orthogonal test is conducted on the main technological parameter of the welding of power battery packs and the optimal combination of parameters is gained after the analysis of the results of the test, which promotes the quality of the spot welding of power battery packs in series connection and in parallel connection.
Research of the Effects of On-Grid Distributed Generation on Traditional Distribution Network
Authors: Zhao Dong Mei , Wang Xin
Published: January 2015

This paper is focused on technical features of large-capacity distributed power generation and takes the example 33 in distribution system as illustration. What is more, the paper analyzes how injection capacity and access locations of distributed generation can affect voltage and network losses. The analysis carries out the trend that indicators changing regarding to change in injection capacity and access locations. Take a typical distribution network of 10kV with distributed power for example, and analysis what affect will happen to the access point upstream, downstream and adjacent current protection that brings by the distributed generation. It is concluded that the main factor that restrains distributed power capacity in photovoltaic power generation is voltage fluctuation and the relay operation of distributed system.
Research on the Alarm Device Based on the Expert Control Algorithm
Authors: Liu Lan Xiang , Zhang Wei Jing
Published: January 2015

This paper summarizes the position detection and location estimation method, and it has a analysis of the position type alarm classification and related technical problems based on that; Position type alarm system related control algorithm is proposed and the related design, combined with the actual design of the circuit debugging steps and specific experimental parameters is given, the practice shows that the stability and reliability of design.
Design of Low Voltage High Current DC-DC Converter Based on TPS54810
Authors: Wang An , Wang Wei Guo , Wu Rong , Zhang Qian
Published: January 2015

In digital signal processing system and microcomputer system, often need to high speed DSP devices and large-scale ASIC, FPGA to design and development, in these systems, the high requirement of the precision of the power module and power supply current, power supply module design will directly affect the stability of the whole system. In addition, the power supply module is usually low voltage large current of DC/DC converter, the requirement of efficiency is very high, generally over 90%. This paper introduces the FPGA based on TI company's TPS54810 power supply with low voltage large current DC/DC converter module design, this paper introduces in detail the external compensation of synchronous buck DC/DC converter power supply circuit design methods.
Effect of Antenna Layout on the Capacity of Massive MIMO
Authors: Li Xiao Yu , Zhang Xiao Fei , Xu Da Zhuan , Zhu Qui Ming
Published: January 2015

This paper addresses the problem of the effect of different antenna layouts on the capacity of massive multiple-input multiple-output (MIMO) system capacity. Based on the narrow-band, flat fading channel model, the effect of scattering environment and antenna layout are considered by incorporating the power azimuth spectrum (PAS) and the array manifold vector. Under the same antenna aperture, six antenna layouts are investigated among which the UCA yields the best capacity while ULA yields the lowest capacity. The more symmetric the antenna geometry is, the better capacity performance it has.
Research on the Failure Characteristics of Porous Ceramic Capacitor Based on Numerical Simulation Technology
Authors: Chao Yang
Published: January 2015

In the electronics industry, people has higher and higher demand for the performance of electronic products, but the requirement of volume is more and more small, it will promote the electronic products toward the direction of miniaturization. Porous ceramic capacitor is one of the most commonly used small electronic devices, but the capacitor thermal failure problem is always a difficult problem plagued capacitor design. This paper establishes the mathematical model of porous ceramic capacitors failure stress, and ABAUQS software is introduced to the failure simulation calculation process of porous ceramic capacitor, to establish the numerical simulation model of capacitor. Through the boundary conditions, the capacitor’s maximum failure stress are calculated, the failure force and the relationship between the thickness of dielectric layer and ceramic layer are obtained, which provide a new computer method for the design of porous ceramic capacitor and the study.
Study on Heat Stability of Polyphenol Oxidase from Purple Sweet Potato
Authors: Gao Lu , Lin Lin , Zhao Li Chun , Wu Fan
Published: January 2015

The basic study on heat stability of polyphenol oxidase (PPO) from purple sweet potato (PSP) was mainly carried out here. Research on thermal stability showed that PPO from PSP was very sensitive to the changes of temperatures. The optimum temperature of PPO was 16°C with the second optimum temperature of 30°C and PPO activity dropped rapidly when temperature was below 5°C or above 45°C. Half-lives of PPO were 450, 240, 66, 50, 21 and 13s respectively at tested temperatures from 65 to 90 °C at 5°C intervals.
Realization of Automatic Power Control in HVDC Control and Protection System
Authors: Zhang Rui , Shen Yan Hong , Yu Cun , Li Feng Long , Pang Ke Wei , Zhang Ling
Published: January 2015

The paper briefly investigates the importance of power control of HVDC (high voltage direct current) control system in the HVDC projects and focus on the actual analysis and research on the realization of automatic power control in HVDC transmission. It has the important guiding significance for the implementation of automatic power control in HVDC transmission.
Design of Voice Communication System Based on the ZigBee Technology for Power Plant
Authors: Xue Chun Wei
Published: January 2015

In this paper, the overview of ZigBee technology is firstly introduced. Futhermore, in order to evaluate the feasibility of voice communication over ZigBee network, this paper takes ZigBee as a wireless communication technology to investigate wireless voice communication. The results show that the voice communication based on ZigBee technology turn out to be effective.
Development of an Organic Acid Antifreeze Coolant
Authors: Chen Jin Mao , Leng Guan Jun , Yi Ru Juan , Gao Bo
Published: January 2015

An organic acid antifreeze coolant was developed in this paper which consisted mainly of deionized water, organic acid, pyrrole compound, alkali and dye. Glycol, nitrite, chromate, inorganic phosphate and other harmful additives were not contained in this formulation. The coolant overcomes the disadvantages in environmental protection, heat transfer and cost of the current technology which uses the ethylene glycol as antifreeze. The coolant has good low temperature protection, thermal conductivity and corrosion protection performance. Further more, the coolant has the advantages of simple preparation, good storage stability and a promising prospects.
An Improved Sensor Positioning for Wireless Sensor Networks
Authors: Lin Jin Tao , Fan Guang Yu , Liu Wen Hong , Hu Ying Da
Published: January 2015

Sensor positioning is a fundamental block in various location-dependent applications of wireless sensor networks. In order to improve the positioning accuracy without increasing the complex and cost of sensor nodes, an improve sensor positioning method is proposed for wireless sensor networks. In the method, after receiving the broadcasting message of the neighboring anchor nodes, the sensor nodes calculate a modifying factor of the change of the signal strength. And they modify the distances between themselves and neighboring anchor nodes with the modifying factor. Simulation results show that the proposed method can obtain a high positioning accuracy.
Numerical Simulation of Dendrite Growth of Binary Alloy Using Phase-Field Method
Authors: Liu Fang Hui , Gao Ming
Published: January 2015

In order to study the growth process and morphology of dendrite directly, a phase field model of binary alloy was established. In this model the order parameter equation was coupled with the temperature field and the solute field. The growing processes and morphology of dendrite were simulated by using this phase field model. Through analyzing the results, we discussed the effects of anisotropic strength and temperature gradient on dendrite morphology. The results shows that with the increasing of anisotropic strength, the dendrite growth rate of the dendrite will increase and the secondary branches appear more clearly. Besides, the temperature gradient has influence on the appearance of secondary arms during the dendrite growing. With the increase of temperature gradient, the size of secondary dendrite arms increase.
Realization of Digital Chaotic Signal Generation Circuits
Authors: Gao Hua Qiang , Wang Yu Jing , Kang Shou Qiang , Le Zhang , Wang Jian Qing , Wei Jing Jing
Published: January 2015

To overcome the shortcomings of realizing chaotic system by analog circuits, digital chaotic signal generation circuits based on DSP are designed. Computer simulation of chaotic system is performed firstly, and the discrete equations are obtained using discretization algorithm. On this basis, the design of hardware circuits based on DSP is made, and the corresponding C programs are constructed. Through the debugging of software and hardware, digital design of chaotic system based on DSP is achieved, and chaotic attractor is observed through an oscilloscope by digital-to-analog conversion circuit. The experimental results coincide with the simulation, proving the correctness of the design. The chaotic signal generation circuits can provide rich digital chaotic signals sources for the application of chaotic systems in engineering.
Realization and Design of SMS Alarm System in Satellite TT&C Ground Station
Authors: Zhang Tao , Li Wei Guo , Li Yi Chao
Published: January 2015

The existed MCS in ground station is local monitoring and control system , so there must be a man on duty all day long to monitor the whole system . In order to make all the staff of the station get the real time alarm messages of the system , we use a SMS modem and a serial server to realize the SMS alarm system on the basis of existed MCS in the ground station . The program language is Visual C#.Net . Based on the alarm system , the staff not on duty can also get the alarm messages of devices in ground station .
Steam Gasification of Biomass Coupled with Lime-Based CO2 Capture in a Dual Fluidized Bed: A Modeling Study
Authors: Wang Xiao Ming , Xiao Xian Bin , Chen Xu Jiao , Liu Ji , Li Wen Yan
Published: January 2015

Biomass is an important renewable energy and making hydrogen-rich syngas from biomass is promising. Dual fluidized bed gasification technology can increase hydrogen content in the syngas. Moreover, steam gasification of biomass coupled with lime-based CO2 capture in a dual fluidized bed can further improve the syngas quality . This paper established a dual fluidized bed gasification model using Aspen plus,in order to explore the effect of different gasification temperatures and steam to biomass ratios on hydrogen content in syngas, providing a theoretical basis for the optimization of operating parameters and process.
Anti-Collision System on Embedded Visual Distance Measurement Based on ARM
Authors: Yang Wei Rong , Liu Chang Hui , Shuai Kao
Published: January 2015

In the actual operation by crane operator, there will appear situation that operator cannot make timely judgment on distance between crane and adjacent obstacle and cause collision accident. For this problem, this paper establishes anti-collision system on distance measurement focuses on ARM 11, on the basis based on machine vision and image procession, it considers effect of corresponding point match and extraction deviation of single characteristics point on measurement result, adopts one kind of method of distance measurement by monocular vision based on single characteristic point. The test result indicates that this system can effectively measure distance with obstacle, it has accurate measurement, high reliability and it can meet real-time requirement.
Energy Optimization of the Wire Part Driven by Three Different Motors in Paper Machine
Authors: Yao Fu Lai , Cao Cheng Yu
Published: January 2015

This paper defines the efficiency similarity of different motor driving devices. Based on the efficiency function characteristics which can be approximately considered a concave, non-negative function through the origin, we present a kind of optimal control method for a felt driven by three different motors in paper machine. It gives the minimum total power consumption. The optimal control method is to keep the same torque rate for each motor driving device. This method is independent of the linearity or nonlinearity of the system and has no need for the system’s state equation or transfer function. Since the shapes of efficiency functions in nature are similar, the conclusion can also be applied to the energy optimization of other general devices.
Study of Electricity Powered Four-Wheel Steering System Based on Fuzzy Neural Network
Authors: Li Wei Dong , Zhang Yi
Published: January 2015

By the analysis of the operational principle of electricity powered four-wheel steering system, a new system based on the fuzzy neural network. Since this is a complex multivariate and non-linear system, by making use of the characteristics of fuzzy control and the neural network, a fuzzy neural network can be established. The speed of car and front-wheel steering angle being the input and steering model being the output, the side-slip angle of the in the process of steering can be control to zero. At last, by emulating this system with the software Matlab/Simulink, it shows that self-healing control technology can effectively control the side-slip angle and improve the motility and stability of a car.
Design of the Automatic Spraying Equipment for Tubular Parts
Authors: Dong Jian Cheng , Zhou Chuan
Published: January 2015

The automatic spraying equipment for tubular parts is used for spraying the tubular parts, especially the ones with the lengths from 1 meter to 15 meters and the diameters from 3 millimeters to 20 millimeters. The whole equipment includes frame, drive unit, fixture, anti-bending device, spray gun, protective cover and so on. During the spraying process, the tubular part will rotate and move forward, to make it get uniform surface coating. The equipment is installed with the anti-bending device, to prevent the tubular part from bending and shaking. The spraying process is controlled by the control system, which makes the automatic spraying come true.
Modeling and Simulation of Mechatronic Technology Based on Intelligent Network Control
Authors: Hu Zhi Xin , Xu Jiu Nan , Weng Ling Xiao
Published: January 2015

This paper designs a new mechatronic modeling and simulation platform, which uses Solidworks to establish the mechanical model, and uses LabVIEW intelligent network library function to realize mechatronic control. Combining with VC software it realizes the simulation results visualized output, which realizes the co-simulation design of SolidWorks, LabVIEW and VC software. With the help of this system, engineers can establish mechanical model by computer software, and use interdisciplinary field theory to analyze the product key performance indicators in the virtual operating environment, further visual processing, and according to the simulation data to improve and optimize the system. It provides a new method for computer research and development of mechatronic products.
Synthesis, Spectroscopic Properties of Bis-Boc-L-alanine Modified 1,8-Naphthyridine Ligand Induced by Cr3+
Authors: Gou Gao Zhang , Zhou Bo , Shi Ling , Wu Na , Chen Xian Lan , Liu Wei
Published: January 2015

One Bis-Boc-L-alanine-1,8-naphthyridine ligand containing amino acid by amido bond named 2,7-Bis-Boc-L-alanine-1,8-naphthyridine (L1) was synthesized and characterized. And there absorption and fluorescence spectra in methanol is presented. Then, the comprehensive study of spectroscopic properties upon titration of L1 with heavy metal ions as ion source in CH3OH was investigated. It shows compound L1 can use as a fluorescent probe for heavy metal ions like Cr3+.
Estimate the Size of the Moving Vehicle LWH Based on Machine Vision
Authors: Wang Jie , Li Tong Qiang
Published: January 2015

The main content of this paper is based on the estimate of LWH(length width and height) dimensions of a machine vision moving vehicle. The information of a vehicle’s length width and height is an important parameter to monitor Road. To achieve non-contact rapid detection of the parameter of a moving vehicle’s size, can effectively improve the efficiency of the road monitoring and provide effective technical means for China's road transport management department. First get the vehicle in sequences image and extract the vehicle from background. Then, we transform the two-dimensional image to three-dimensional image with a simple projection model for getting the parameters of the length, width and height of the vehicle. Experiments show that the accuracy of the test results of this algorithm is relatively high.
Optimization Design of Fuzzy Control Rules Based on Ant Colony Algorithm
Authors: Xing Ya Lang , Xin He , Zhao Jin Cheng
Published: January 2015

To avoid the fuzzy rules getting into “rule exploding” in fuzzy control system, a fuzzy control rules optimization algorithm based on compatibility coefficient is proposed. The method defines the compatibility coefficient of fuzzy rules, and the compatibility coefficient matrix is used to be the heuristic information in ant colony algorithm. Ant colony algorithm is used to optimize designed complete fuzzy rule base. Simulation results show that the fuzzy rules have good compatibility and control performance.
Analysis of the Reactive Power Control Strategy Based on Improved Particle Swarm Algorithm
Authors: Yu Zhang
Published: January 2015

According to the number of constraints of the reactive power control equipment, this paper considers the constraints of the voltage in the load of extreme points of the segmentation program period, and uses dynamic optimization of sub-segmentation in the load curve. It solves the optimization based on applying improved particle swarm optimization into load curve segments, and uses particle swarm optimization through adaptive inertia weight and acceleration factor, phase initialization and mutation operations in order to improve the ability of global optimization.
Fuzzy Nonsingular Terminal Sliding Mode Control for Attitude of Flapping Wing Micro Aerial Vehicle
Authors: Hu Sheng Bin , Yin Jian Feng , Liang He Ju , Liu Hui
Published: January 2015

A fuzzy nonsingular terminal sliding mode control scheme for the attitude of flapping wing micro aerial vehicle is proposed in this paper. Based on the feedback linearization technique, a nonsingular terminal sliding mode controller is designed. To reduce the chattering in the control input, a fuzzy controller is designed to adaptively tune the switch part gain of nonsingular terminal sliding mode controller according to the nonsingular terminal sliding mode surface. The stability of the control scheme is verified by using Lyapunov principle. Simulation results show that the proposed control scheme is effective.
Temperature Optimal Control Model Design of the Metal Material Smelting
Authors: Wu Zhao Yu
Published: January 2015

The accurate control methods for temperature of metallic materials smelting is studied. For the defect of temperature changes with quite high frequency caused by complicated process during metallic materials smelting process, a temperature optimal control method of the metallic material smelting based on 2T-S fuzzy model is proposed. Temperature state signal is collected by the sensor during the smelting of metallic materials, then filtered and regarded as input data for a 2T-S fuzzy model. 2T-S fuzzy model is established to achieve temperature optimal control during metallic material smelting. The experimental results show that the proposed algorithm can effectively improve the accuracy of the temperature control of metallic materials smelting process, and achieved satisfactory results.
Electronic Structure and Optical Properties of Cu-Doped SnO2
Authors: Xu Min
Published: January 2015

based on Density Functional Theory, we investigated the optical structures and the electronic properties of Cu doped SnO2with density of 12.5%, including band structure, the density of state (dos), Dielectric function and optical absorption spectrum. The results show that Fermi level access conduction band gradually with the doped density. It has enhanced the electrical and metal property of material. The peaks of reflectivity spectrum and absorption spectrum correspond density of state.
Study on the Structure of the Alloy Welding Mold and the Welding Specifications
Authors: Yu Ke Long
Published: January 2015

ordinary carbon steel hardness and life is difficult to achieve blanking dies and drawing dies requirements. In the surfacing alloy steel and alloy steel base can improve the surface hardness and durability of the mold. To reduce the use of electric arc welding carbide decomposition and burn in the shielding gas . Welding mold base structure to meet the requirements of the welding . Mold heat treatment after welding specifications and hardness to meet the processing requirements and use of strength requirements. Welding process design mold substrate heating requirements and the requirements of the solder layer thickness and the thickness between layers allocation.
Research on Measures of Civil Engineering Construction to Achieve the Landscape Green Energy Saving
Authors: Ke Lin , Chang Ji Cui , Zheng Quan
Published: January 2015

Low-carbon environment and energy saving have gradually into the enterprise development idea. In the construction industry, civil engineering construction of energy conservation and environmental protection has reached a certain level after a period of development. It is of great significance to build energy conservation measures in civil engineering for improving environmental quality and save energy consumption. This article analyzes measures from the civil engineering overview and application status of building energy saving measures, the importance of building energy saving measures in combination with civil engineering. The measures are important for our country to make a certain contribution to saving energy consumption and realize the sustainable development.
Research on Spatial Coupling of the Urban Planning Based on Master and Main Functional Area
Authors: Zhao Jing , Zhao Jing
Published: January 2015

In this paper, based on the reality and the goal of congruence scenario, expound and analysis of the similarities and differences between urban master planning and the main functional area, and found that there is an unity within them. From three aspects including the space boundary theory, the function orientation and index control, it reveals the nature , content of the main functional areas and the urban master planning control district, the purpose is to make the main functional areas of planning based on the urban maser planning more systematic and scientific.
The Analysis of Reconstruction Planning on Service Area of Mount Wudang, Hanshi Expressway in Hubei Province by GIS Technology
Authors: Zheng Quan , Shen Dian Dong
Published: January 2015

Service area of Mount Wudang is located in the west of Hubei Province of Fuzhou-Yinchuan expressway. Though owning a large number of cultural and geographical resources, its functions and characteristics have not been fully developed because of some geographical reasons. This paper comprehensively analyzes the current overall status of the service area. Drawing on the advanced domestic and foreign management experience in construction of expressway service area and service demand of modern highway, this paper repositions the construction, operation, management and service of this service area and puts forward some reconstruction planning and assumptions with more regional characteristics and time demands.
Numerical Analysis of Natural Foundation Settlement under Different Subgrade Height in the Yellow River Flood Area
Authors: Geng Jie , Ren Xiao Gang , Wang Xiao Guang , Jin Zhuang
Published: January 2015

Foundation subsidence is an important factor affecting the life of the highway, as well as one of the important evaluation indicators of the foundation disposal measures. In this paper, by selecting typical foundations of Jile express highway, FLAC3D was used to simulate the natural foundation settlement under different subgrade height considering the impact of groundwater levels in the Yellow River flood area. The relationship between the time T (Month) from subgrade construction completed to stabilization and the subgrade height H was found as: T=0.36H2-1.63H+33.47, and the appropriate value of time was got to be placed under different circumstances.
Design of Rational Concatenation between Bridge and Portal for Mountain Tunnel on High and Steep Slope
Authors: Zhou Xiao Jun , Jiang Bo , Zhou Yue Feng , Yu Yu
Published: January 2015

Two typical structures to concatenate bridge and tunnel portal for railway line on high and steep mountainous slope have been presented according to the complicated landform and ground geology in a new high speed railway line. Comparison between the two types of bridge-tunnel concatenation shows that separated structure is more superior in lessening train vibration than integrated structure. The prevention of rockfall from front slope at tunnel portal is still considered in the two structures. The concatenation types presented in the paper can be used to guide the design of bridge-tunnel concatenation in high speed railway line on complex and abrupt mountainous slope.