bluuebunny/crossref_metadata_2025 huggingface dataset:
The Model of Estimating MTL Crosstalk in Inhomogeneous Medium
Authors: Gao Yin Han , An Zhan Yang , Wang Tian Hao , Yang Kai Yu , Wang Ju Xian
Published: December 2014

Based on the transmission line theory, this paper applies the mode theory to predict the MTL(multi-conductor transmission line) crosstalk by selecting voltage as the research object, thus establish the model of estimating MTL crosstalk in inhomogeneous medium. Then make numerical calculation in MATLAB for the estimate model established in this paper, and also compare the calculated values with the simulated values in EMC studio. The compared results show that the calculated results of this model is highly consistent with the practical simulated values, verifying the correctness and feasibility of mode theory in MTL crosstalk prediction.
Integrated Avionics Network Dynamics Analysis
Authors: Li Dan , Zhang Jian Dong , Wu Yong , Shi Gou Qing
Published: December 2014

To evaluate the message transmission mechanism of avionics network, we propose the method for studying important performance parameters of integrated avionics system by using complex network knowledge. Consider the topological characteristics of the network and analyze the degree, degree distribution, average path length, clustering coefficients and other important performance parameters. Finally, analyze the calculation approach of robustness through the maximal connected sub-graph. We also analyze the priority and message processing capabilities of avionics subsystem, establish a random failure model of integrated avionics system network, and simulate the robustness of integrated avionics network when random failure occurs with several nodes.
The Design of the Power Energy Management System Based on Wireless Sensor Network
Authors: Li Wei Li , Xie Hai Jiang
Published: December 2014

With the development of science and technology, people's demand for energy is more and bigger, in addition to consider renewable energy. Electricity management system to study the effects of energy saving effect is also very necessary measures. Development of a complete set of monitoring, energy saving, control of intelligent power management system has very important practical significance. Finally, the paper puts forward the energy saving effect of validation, the energy saving analysis and evaluation. Based on the research of the content of this article, it finally realizes the intelligent management and scientific control of electric equipment, to solve the management of electric equipment of large power place management control is limited by geographical, effectively eliminate the phenomenon of energy waste. This system has good scalability can be slightly modified to meet more big power.
A Study of the Model which Can Improve LEACH Protocol
Authors: Wang Chao Gang , Zhang Xin , Han Ke
Published: December 2014

In the application process of wireless sensor network, LEACH protocol solves the problem of data fusion well, and reduces data exchanges between nodes and bases. Based on the research, this paper proposes an advanced LEACH protocol, which is fused by the data of cluster head, and each time when transmits data to the neighbor shortest cluster head, this protocol gets reduction in the aspects of theoretical existing and energy consumption, and improvement in using efficiency. The LEACH protocol Low Energy Adaptive Clustering Hierarchy (LEACH) [1] is designed by Hein Zelman W et al from college of electronic engineering and computer science of MIT University for the wireless sensor network. The protocol divides all nodes in the network into several clusters, in which the cluster members are responsible for the collection of user needs in the news, and the cluster head is responsible for the management of cluster member cluster members, for the allocation of communication time slot to receive the cluster members messages, and these messages are forwarded to fusion processing, the processed data to the base station node. Compared with the planar routing, the cluster structure through data fusion, can eliminate redundant data, reduce network traffic, effectively save energy, and prolong the network survival time. But the protocol still has some problems, such as the burden of cluster heads is too heavy, more energy consumption, cost of frequent building clusters bring and network load balancing.
Design and Algorithm Optimization of P2P Mobile Monitoring Network-Based Facial Recognition System
Authors: Li Xing , Wang Pin , Li Hong
Published: December 2014

To meet the demand of provisional emergency monitoring in large-scale outdoor rallies and emergency situations, this paper designs a P2P mobile monitoring system which would be based P2P wireless network infrastructure. The mobile terminal function of the system is designed to be able to make monitoring recording, play videos and realize P2P video session in the form of streaming media. The embedded design and algorithm optimization of the system’s facial recognition function gives more well-rounded performance to the system in terms of safeguarding, dispatch and commanding. This paper would design the system’s P2P network infrastructure and the function module of the mobile terminal software and propose the optimization of the facial recognition algorithm based on this system.
Rotation Moment Invariant Feature Extraction Techniques for Image Matching
Authors: Lai Yi Qiang
Published: December 2014

In recently years, extracting images invariance features are gaining more attention in image matching field. Various types of methods have been used to match image successfully in a number of applications. But in mostly literatures, the rotation moment invariant properties of these invariants have not been studied widely. In this paper, we present a novel method based on Polar Harmonic Transforms (PHTs) which is consisted of a set of orthogonal projection bases to extract rotation moment invariant features. The experimental results show that the kernel computation of PHTs is simple and image features is extracted accurately in image matching. Hence polar harmonic transforms have provided a powerful tool for image matching.
Effect of Ce on Secondary Extrusion Deformation Microstructure of ZM21 Alloy
Authors: Li Quan , Zeng Bin , Zhu Wei Bo , Wang Si Ya , Jiang Xian Quan , Pan Fu Sheng
Published: December 2014

This article was added to the ZM21 alloy Mg-Ce master alloy containing rare earth Ce get ZM21 slab, and then on the ZM21 and ZM21 + Ce a magnesium alloy extrusion and secondary research Ce on ZM21 alloy secondary squeeze pressure on the deformation microstructure and properties.
Influence of Laminate Scheme on Design of Continuous Fiber Reinforced Composite Turbofan Engine Shaft
Authors: Sha Yun Dong , Jia Que Yue , Luo Li , Zhao Feng Tong , Luan Xiao Chi
Published: December 2014

Advanced materials and processes are required to meet the performance goals in the design of advanced turbofan engine, SiC/Ti composite is typically used in low pressure turbine shaft (LPTS). Firstly, establish the viability and effectiveness of composite cylinder assemblage (CCA) micro-mechanics model and representative volume element (RVE) micro-mechanics model which are utilized to calculate the mechanical parameter of continuous fiber reinforced metal matrix composite (CFRMMC), respectively. Results show that RVE model is more applicable to calculate continuous fiber reinforced LPTS. Secondly, parameters of mechanics performance calculated by RVE model are taken as input to build mechanics analysis model of fiber reinforced metal matrix composite shaft structure. The optimal solution will be got by design and analysis of CFRMMC shaft structure with 2 kinds of loads. Compared with deformation and stress of shaft structure with different material scheme, then an optimization scheme of SCS/Ti2AlNb composite of LPTS can be obtained.
Analysis of Tunnel Running through Bridge Pile Foundation Based on the MIDAS/GTS
Authors: Li Jin Kui , Tang De Jin
Published: December 2014

Based on the problem of tunnel running through bridge pile foundation, a 3d numerical model is built by the finite element software MIDAS/GTS in order to research the internal force and the displacement of the pile and soil during the Construction process. The sedimentation value of the top of the pile is bigger than others. Because the bigger thrust about the Shield machine, the horizontal displacement of the pile is increasing at first and decreasing at last from a positive into a negative. Because of the loss of the soil, the soil beside the pile collapses and causes strong friction force. The surface sedimentation value which is near the central line of the tunnel is bigger than other place. This paper is of good reference roles in the similar underground engineering in Dalian.
Influences of Ground Reflection on the Elevated Box Bridge Structure Noise
Authors: Zhang Xiao Yun , Song Qing , Zhang Xiao An
Published: December 2014

A 32 m simply supported concrete box bridge is taken as the research object. The box bridge structure noise induced by the static loads and how the ground reflection affects it are studied by the modal acoustic transfer vector (MATV) method. The results show that it is commendable to analyze the box bridge structure noise using the MATV method; the regularities of the sound field distribution are changed obviously by the ground reflection, and the directivity is very obvious in the far-field region and there has the stratification of the vertical sound field under the box bridge; the ground reflection enhances the overall sound level of the sound field except the region above the box bridge, and the vertical sound field in the far field is affected very obviously. The buildings, especially the high-rise buildings, are mostly in the far field area, so the influences of the ground reflection on the box bridge structure noise must be paid attention to.
Preparation and Properties of SiO2-P2O5-TiO2 Membrane for Fuel Cell Electrolytes
Authors: Zheng Long , Wang Fei , Li Te , Li Yong Sheng , Li Ji Hua
Published: December 2014

As the key parts to fuel cells, proton conducting electrolytes decides the performance of fuel cells. SiO2-P2O5-TiO2based glasses have been prepared by a sol-gel process in this experiment. Through TG、 XRD and SEM analysis, it was found that the membrane was existed in the form of amorphous structure. And most of the pores were in micro-pores of size less than 10μm. By the results of resistance, the conductivities were obtained by calculation. The influence of temperature to conductivity was discussed in detail. It was found that the conductivity was increased with the increased temperature .The membrane showed overall conductivities greater than 10-2S·cm-1at 2000Hz in the temperature range of 70~140°C.
Analysis of Resistance of Current Collector in Packing-Type Microbial Fuel Cell
Authors: Li Hui , Shao Lin Guang , Jiao Yuan Yuan
Published: December 2014

To reduce the power loss during producing electricity and to improve the efficiency of electron transfer in microbial fuel cell (MFC), now current collector study provide a new direction lead to how to improve its performance. This study uses Titanium mesh (size in 0.45mm×20mesh) as Packing-Type MFC’s current collector, which contains 57.7% pure titanium. The mesh and wire diameter influence its transfer efficiency, that mesh number affects contact resistance while the wire diameter affects conduction resistance.
Effect of Microstructure on Properties of NiCrBSi Alloys Applied by Flame-Powder Deposition
Authors: Mikuš Rastislav , Kováč Ivan , Žarnovský Jozef
Published: December 2014

This article deals with studying the relationships among the chemical composition, microstructure and properties (hardness, micro-hardness, wear resistance) of powder additives based on NiCrBSi after their deposition. Tested materials reached a relatively wide range of hardness after deposition, which corresponds to their chemical composition and microstructure. The abrasive wear resistance of materials was tested on an emery cloth. The results indicate that both the hardness and abrasive wear resistance of tested materials depend especially on the content of carbon and chromium. Microstructural analysis indicates that the structure of tested materials is formed by the γ-Ni solid solution and intermediate phases based on boron, silicon and carbon. Those mostly form eutectics (three types), or are excluded by precipitation. There was also found a significant effect of chromium, but especially carbon content on the ratio between the solid solution and eutectics in the microstructure of tested materials. These different ratios of solid solution and eutectics were markedly reflected in micro-hardness behaviours in deposited layers. Micro-hardness values confirmed also the presence of carbidic particles in the layers with carbon content higher than 0.7 wt%.
Hydraulic Laboratory Devices for Testing of Hydraulic Pumps
Authors: Tkáč Zdenko , Kosiba Ján , Hujo Ľubomír , Uhrinová Daniela , Štulajter Ivan
Published: December 2014

Hydraulic pumps are the most important components of hydraulic circuits in agricultural tractors. Their durability is influenced by flow characteristics and thus the flow efficiency. This paper presents the laboratory test of an ecological synthetic hydraulic fluid of UTTO type. This fluid is currently under development. In terms of a decrease in hydraulic pump flow efficiency, laboratory tests of these fluids did not show negative effects of its application. It can be stated that after completion of laboratory tests, it will be needed to continue with trials under operational conditions.
Study of Particle Size Distribution of Selected Material of Solid Fertilizer by Using Photo-Optical Image Analysis
Authors: Macák Miroslav , Nozdrovický Ladislav
Published: December 2014

In many branches of industrial production, there is a need for continual monitoring of the quality of manufactured product. Such requirements arise in the production of fertilizers, as the physical and mechanical properties of fertilizers affect the quality of application provided by fertilizer spreaders. The aim of the presented paper was to compare the suitability and applicability of the photo-optical image analysis with the sieve analysis used for the determination of fertilizer particle size distribution. The photo-optical method was used by [1] to study the fertilizer particle size distribution. These researchers tried to measure the size and velocity of flying particles in relation to the quality of application of centrifugal spreaders. During our comparative experiments, we have compared the photo-optical image analysis and sieve analysis. In experiments, we used the samples of the granulated fertilizer NMgS produced by the Duslo, a.s. company. The sieve analysis was conducted according to the national standard STN EN 1235 in the laboratories of the Department of Machines and Production Systems at the Faculty of Engineering, Slovak University of Agriculture in Nitra.
Monitoring Liquid Radioactive Waste Discharges Released from Nuclear Power Plant
Authors: Bujna Marián , Prístavka Miroslav , Korenko Maroš , Dostál Petr
Published: December 2014

The purpose of this paper is to monitor the amount of discharged radioactive liquid discharges from nuclear power plant and propose ways to reduce the amount given. The report consists of a literature review, objective and methodology proposed. The methodology and results consist of distribution of waste, originally liquid radioactive waste (LRW), a source of LRW, a year-round monitoring of liquid effluents of nuclear power plant and eventual adoption of protective measures. Tritium, as one of the LRW, is a radioactive substance having a negative impact on the environment. In the course of our research, we have found an increased dose of tritium over permitted annual limit. We investigated the impact of tritium on the environment and took protective measures to reduce the amount of tritium released in the environment. The report may serve as a basis for other nuclear power plants and the entire nuclear industry.
Investigation of Mechanical Property and Springback Behavior with Hot Stamping RCP Process
Authors: He Bin , Ying Liang , Hu Ping , Yu Yang , Zhao Xi , Zhang Li Wen
Published: December 2014

With the current development of hot stamping technology, quality products have been striving for not only uniformity in hardness but also a minimum of springback. Considering the fact that the uniformity distribution of hardness and the randomness distribution of the springback are inevitable in hot stamping process due to many complex factors such as contact sequence, contact clearance, scale and initial stamping temperature, a new method named RCP method was proposed to improve the hardness and springback of hot stamping product in this paper. The cooling rate control before stamping is applied based on CCT curves through a rapid air cooling device which can provide cooling rate of 60°C/s. Three parameters included initial stamping temperature, contacting pressure and dwelling time have been investigated in this paper. According to the experiment results, the hardness deviation is markedly decreased and the springback can be controlled within the threshold value ±0.5mm.
Influences of Austenitization Parameters on Properties of Martensitic Stainless Steel in Hot Stamping
Authors: Wang Kai , Wang Zhi Bin , Liu Pei Xing , Zhang Yi Sheng
Published: December 2014

Due to high temperature and inevitable contact with air, strong oxidation and decarburization of the bare steel exist in hot stamping of ultra-high strength steels. Martensitic stainless steel could be a potential solution with its corrosion resistance and high strength. In this paper, the influences of austenitization temperature (850 to 1000 °C) and time (3 to 10 min) on final properties of 410 martensitic stainless steel were investigated, to obtain an ultra-high strength up to 1500MPa. The hot stamping of 410 steel is simulated by compression tests with a flat die. Mechanical properties of blanks after hot stamping process were detected by tensile tests. Results show that the final strength of 410 steel increases and the plasticity decreases, with the increase of austenitization temperature and time. After austenitization at 1000 °C for 5-10 min, an ultimate tensile strength up to 1500MPa is obtained with a martensite dominated microstructure.
Blank Shape Sensitivity on Temperature Distribution of Hot Stamping Boron Steel through Conduction Heating
Authors: Liang Wei Kang , Wang Liang , Liu Yong , Wang Yi Lin , Zhang Yi Sheng
Published: December 2014

The conduction heating overcomes shortage of the radiation heating because of rapid heating and high energy efficiency. It is suitable for heating of blanks with an appropriate length/width ratio. In this study, a conduction heating system was developed in terms of Joule’s Law. Sensitivity of blank shapes on temperature distribution of hot stamping boron steel during conduction heating was investigated. Heating experiments of boron steel blanks with irregular-shapes, such as ladder, joist and rectangle with variable cross-section were implemented on the system. The results showed that the steady temperature was decided by the shape of the blanks. It was indicated that the steady temperature of the tested blanks was inversely proportion to the sectional area.
New Process of Hot Stamping in Combination with Q-P-T Treatment for Higher Strength-Ductility Auto-Parts
Authors: Li Guang Ying , Ma Ming Tu , Mao Xin Ping , Zhao Chang Xu
Published: December 2014

Hot stamping has been developed into a sophisticated stage with standardized technology and typical product USIBOR1500. Most of the hot stamped components from 22MnB5 blanks possess high strength-ductility with TS⋅El product from 10 to 15 GPa%. To meet the further requirement of automakers on body lightening, energy saving and impact safety, the new HFQPT process is proposed, i.e. Hot Stamping in combination with Quenching-Partitioning-Tempering treatment, for higher strength-ductility auto parts with TS⋅El product 20∼30 GPa%. Based on the key technology of AHSS in retained austenite RA and TRIP effect, the Q-P-T treatment is integrated to hot stamping process to obtain retained austenite on the martensite matrix to improve ductility of hot stamped ultra-high-strength components. A low temperature P-T furnace is added to the hot stamping line followed the hot pressing machine to perform Partitioning-Tempering treatment immediately after Hot Press Forming and Quenching, named as HFQPT process. The blank steels for new hot stamping process HFQPT line can be further developed on the basis of low alloyed TRIP assisted steels, Q-P steels and Q-P-T steels, and produced in traditional hot strip mill HSM or in compact steel production CSP line through thin slab casting & direct rolling to deliver ultra-thin-hot-strip (thickness t = 1.2 ∼2.0 mm).
High-Strength Steel Door-Beam Design and Digital Simulation
Authors: Shan Zhong De , Yan Qin Tai , Jiang Chao , Rong Wen Juan
Published: December 2014

Due to the yield strength σs, tensile strength σb of high-strength steel is much higher than original one, it is applied in making auto’s structure parts to improve the security of passengers and reduce the weight of auto. To make the production of the cold-stamp parts easier, the paper analyzed the structure of a classical part, door-beam, and found that the surface of the part should be G1 continuity at least, rather than G0 continuity. The G1 continuity part has more uniform thickness, less inner strain, and more safety from cracking.
The Effect of Heating Process on Strength and the Original Austenite Grain Size of Hot Forming Parts
Authors: Hu Kuan Hui , Liu Xiang Dong , Feng Guan Wen , Han Rong Dong
Published: December 2014

Strength, microstructure and austenitic grain size of a hot formed steel WHT1300HF after simulative hot stamping were studied by using universal testing machine for materials and optical microscopy. The results show that the yield strength of the hot stamping parts presented the tendency of earlier decrease and later increase with the extension of holding time, tensile strength was first reduced and then hold above 1400 MPa. In addition, the microstructure of the hot stamping parts was lath martensite, and martensite lath length and packet width increases with the heating temperature increased from 850 °C to 1050 °C. Especially, the effect of heat temperature on the original austenite grain size was more obvious, such as the austenite grains grew up quickly with the increase of heating temperature, and the original austenite grain diameter was 37.8 μm when the temperature reached 1050 °C.
Microstructure Development and Mechanical Properties of a Hot Stamped Low-Carbon Advanced High Strength Steel Treated by a Novel Dynamic Carbon Partitioning Process
Authors: Zhang Fei Bao , Song Hong Wu , Cheng Ming , Li Xin , Zhang Shi Hong , Liu Wei Jie
Published: December 2014

To make steel exhibit attractive properties as high strength and good ductility, this paper presents a novel one step method for forming-Q&P integration—Hot Stamping-Dynamic Partitioning (HS-DP) process. The proposed HS-DP process is simulated with salt bath heat treatment. The effect of microstructure and mechanical properties in a low-carbon AHSS with different cooling rate of the new process is investigated by using scanning electron microscopy (SEM), X-ray diffraction (XRD) and tensile test methods. Microstructure of the steel subjected to HS-DP treatment is mainly composed of initial quenched martensite phase , final quenched martensite phase and retained austenite phase formed. The impact of retained austenite is also discussed, especially the influence of elongation caused by various retained austenite volume fraction and carbon-content. This experiment illustrates the promising application potential of the hot stamping-dynamic carbon partitioning process.
Research on Elements Distribution in Hot Dip Aluminum Silicon Coating of Hot Stamping Steel
Authors: Xiong Zi Liu , Liu Hong Qiang , Wang Xue Hui , Cui Yi , Xue Jie , Li Jian Ying
Published: December 2014

Al-Si coating in different hot dip process conditions were made by a hot-dip galvanizing simulator, and distribution regularities of chemical elements in coating were studied by means of GDS, SEM, EDS and XRD. The results show that the hot dip temperature has no obvious impact on elements distribution in coating, but has some impact on Si content in surface coating. The hot dip time has no obvious impact on surface coating element content, but has distinct impact on deep coating element content. With the hot dip time increasing, Al content decreases, Fe content increases, and Si content decreases. Al-Si coating is composed of 3 layers, surface layer contains fine and close Al2O3 film, which has good anti-oxidation property on high temperature and hot stamping property, middle layer contains high melting point phase ,such as rich Fe phase , FeAl3 ,which has excellent anti-oxidation property on high temperature. The elements in diffusion layer can even be transited to basic steel, so coating has good adhesion property.
Hot Formed Steel and its Properties Test
Authors: Li Yan Bo , Huo Wei Tao , Xia Shi Wang
Published: December 2014

The hot forming process can realize the lightweight under the condition that the strength requirement is met, so more and more automobile manufacturers focus on the development of the hot forming products. For there is obvious difference between the hot forming process and the cold forming process, there are several special requirements for the properties test of products. This paper in combination with the actual production parts briefly describes several common properties test methods of the hot forming products and consideration during the detection.
Effects of Austenitizing Temperature on Microstructure and Properties of Hot-Formed Steel
Authors: Cai He Long , Du Peng Ju , Yi Hong Liang , Wu Di
Published: December 2014

Press hardening steel is the best solution for application of extremely high strength steel in automotive structures in order to reduce the weight of body-in-white. Effect of austenitizing temperature on the grain coarsening of a press hardening steel has been investigated by using dilatometer at first. The mechanical properties of press-hardened steel austenitized at temperature between 850 to 950oC by using a pilot hot stamping line have been investigated. The strength, especially the ultimate tensile strength, was improved by the grain refinement with lower austenitization temperature.
Piezoelectric Optimum Placement via LQR Controller
Authors: de Oliveira Aguinaldo Soares , da Costa Ferreira Douglas , Chavarette Fábio Roberto , Peruzzi Nelson José , Marques Viviane Cassol
Published: December 2014

The piezoelectric elements have received important attention from researchers because the piezoelectric materials are small, lightweight and resilient against adverse working environments and also piezoelectric materials can be used as both actuators and sensors. Actuators and sensors placement identification is a center study to avoid undesirable effects in flexible structure under control such as lack of observability and controllability system. In this research it was used a singular analysis of input control matrix as a piezoelectric placement tool and after piezoelectric placement study it was checked these positions through the piezoelectric elements placement in an optimum and no optimum positions and simulating the control through linear quadratic regulator technique in both positions. The flexible structure used as a model is a simply supported beam. As a main result the simulation demonstrate to be robust to piezoelectric placement identification.
Telescopic Boom Design and Finite Element Analysis Based on ABAQUS
Authors: Guo Hao Liang , Mu Xi Hui , Lv Kai , Du Feng Po
Published: December 2014

This document mainly studies the cross-section shape of the box-type telescopic boom. First, the basic structure of the telescopic boom was analyzed, and then, the finite element analysis of the quadrilateral and hexagonal telescopic booms were conducted based on ABAQUS with the same section height, width, thickness, as well as the same constraints and loads condition. The stress-strain diagram was obtained. Comparing to the quadrilateral boom, the hexagonal telescopic boom loads higher, weights lighter, and performs better.
Emotional Classification Algorithm of Micro-Blog Text Based on the Combination of Emotional Characteristics
Authors: Yuan Bin , Jiang Tao , Yu Hong Zhi
Published: December 2014

Now micro-blog media is growing fast and micro-blog short text has also become a new type of information carrier. User’s sentiment orientation and emotion of the topic or event in a large number of user’s micro-blog, can not only provide decision-making basis in business but also provide support for government's public opinion monitoring. During micro-blog emotion classification, characteristic information is extracted directly influences the classification effect. This paper uses emotional sentences, emotional symbol, emotional word polarity and other emotional information as classification feature, and use NLP&CC Chinese micro-blog sentiment analysis evaluation standard segmentation of emotion in the polarity based emotion. This paper proposed the Chinese micro-blog sentiment classification based on the feature of amorous feeling. Parallel tests suggested that this method has better classification results, and has verified when micro-blog text’s emotional level is higher, the effect of the method is better.
Analysis of Fracture Process and Common Defects in Casting Alloys EN43100 Manufactured by Die Casting Technology
Authors: Gaspar Stefan , Pasko Ján
Published: December 2014

Recent research in the process of die casting production of aluminium alloys which are nowadays deeply implemented in the rapidly developing automobile, shipping and airline industry aims to increase the manufacture and quality properties of the casting in order to obtain its high mechanical properties at acceptable economic costs. In terms of ensuring the quality indicators in the production of aluminium castings it is necessary to pay close attention to internal structural quality of the castings characterized by type and extent of foundry defects (cavities, Al2O3 particles, internal cold laps). The presenting contribution deals with the analysis of the fracture process, the microorganism disturbance of test samples, the impact of casting speed on the occurrence and extent of the castings porosity and reasons for the internal foundry defects of casting alloys EN 43100 manufactured by die casting technology.
Investigation on Work Hardening Behavior of Nickel-Base Superalloy during Hot Working Process by EBSD
Authors: Fang Shuang , Zhang Min Cong , Yu Qiu Ying , Wang Shu Yun , Cao Chun Xiao
Published: December 2014

The Nickel-base superalloy samples were prepared by the isothermal forging in strain rate 1s-1 at deformation temperature 1070°C with different strain levels. The EBSD was carried out in order to investigate the microstructural changes that took place due to strain level. The result is the samples has no apparent dynamic recrystallization behavior in hot deformation in 1s-1 at 1070°C. The true stress-true strain curve has two peak values in the strain level of 20% and 60%, and one valley value in the strain level of 50%. The first peak value is result in the activation of slip system and the beginning of recrystallization and the second peak value of the true stress-true strain curve is result in the inhibition of activation of slip system and grain growth by the dislocation density. The work hardening behavior of P/M Nickel-base superalloy may be related to the size ratio of γ’ phase with grain size.
Disk Laser Welding of ZE 41 Magnesium Alloy
Authors: Sahul Miroslav , Sahul Martin , Turňa Milan , Zacková Paulína
Published: December 2014

The paper deals with disk laser welding of magnesium alloy with the content of rare earth elements. ZE 41 magnesium alloy with the thickness of 2.0 mm was used as experimental metal. TruDisk 4002 solid state laser with a wavelength of 1.03 microns and a maximum power of 2.0 kW was used for welding of magnesium alloy. Laser power which was applied ranged from 0.6 to 1.2 kW. The focal position of laser beam was fixed on the surface of magnesium alloy and the welding speed was set to 70 mm/s. Argon with flow rate of 12 l/min was used as shielding gas. Light microscopy, EDX microanalysis and micro hardness measurements across base metal - fusion zone interface were carried out in order to analyze the weld joints.
Application of a Ternary Zn-Based Solder Alloy for Joining of AZ31B Magnesium Alloy with Ultrasonic Support
Authors: Jáňa Miroslav , Turňa Milan , Marônek Milan , Kuruc Marcel , Bílek Pavel
Published: December 2014

Contribution deals with soldering of Mg alloy AZ31B by ternary solder ZnAl6Ag6 with ultrasonic support. Suggested solder has been analyzed from many aspects. Microstructure of solder consistutes of solid solution α-Al (FCC_Al), β-Zn (HCP_Zn) and intermetallic phases AgZn3 and AlAg3. Melting temperature of solder 386.8 °C has been determined by DSC analysis. Metallurgical process of ultrasonic soldering has run at 410 °C for 3 s. Soldered joint has been constituted by eutectic ternary structure β-Mg17(ZnAl)12, solid solution α - Mg, which contains Al and Ag elements. At solder-substrate interface, there has been formed intermetallic phase Mg2Zn11. The highest value of microhardness has been 260 HV. To predict lifetime of soldered joint, calculations in software Thermo-Calc has been performed.
Design and Implementation of Smart Home System Based on RFID Technology
Authors: Xu Wei , Li Dan
Published: December 2014

This paper describes a kind of smart home control system. The system can intelligently adjust the indoor environment, according to the temperature and humidity, the light intensity, the combustible gas levels and other parameters. The smart home control system can intelligently control household appliances in order to achieve energy saving purpose. It uses embedded microprocessor as control unit,and uses RFID technology for household staff identity recognition. The smart home control system uses sensor system to get indoor environment parameters. Through the real-time measurement and control, it helps people to achieve comfortable, intelligent household environment.
Study on the Influencing Factors of the Western Provincial Capital Cities’ Housing Price Differences
Authors: Liu Xi Lu , Yang Jian Ping
Published: December 2014

In recent years, the regional difference of the real estate price in western area gradually increases, making the effects of macroeconomic regulation and control is different among regions. In this paper, based on the theory of market supply and demand, first of all, the indicators are selected that can reflect the conditions of real estate market, then western provincial capital cities’ real estate markets are divided into three regions through cluster analysis. Secondly, the natural logarithmic model is established concerning the commercial housing price and the factors. Multiple regression analysis is performed for each area, in order to analyze the reasons of property price differences in three regions.
Discussion on the Synergy Mechanism of Diversified Coal Enterprises
Authors: Sun Xi Min , Luo Xi
Published: December 2014

Taking the example of aCoal & Chemistry Industry Group and aiming at the problems like unclearindustry synergy motivation, path and target of China’s Diversified large coalenterprise groups, a case study is used to analyze the synergy mechanism of itsdiversified industries through the research procedure of open coding, selectivecoding, axial coding, the test of the theory saturation. The study shows theassociation between the main and expanded coal enterprises business, containingthree forms of association, which are business association, functionassociation and political association respectively. Besides, with the help ofthe internal market, circular utilization, transaction cost reduction,resources sharing, merge and reorganization, scarce resources acquisition andother measures to achieve these effects, for example risk diversification,economy of scope effects, economy of scale effects and market promotion effect,etc.
Research on the Improving of Warm Mix Asphalt Technology by Adding Organic Viscosity-Reducers
Authors: Li Ting , Yin Yan Ping , Gao Li Ning , Chen Hua Xin
Published: December 2014

Inconsideration of the application defects of organic viscosity-reducing warm mixasphalt (represented by Sasobit), such as poor adhesion with aggregate,inadequate of low-temperature deformation, four methods for Sasobit modificationwere proposed and they were blending with polymer, grafting, hydroisomerizationand adjusting molecular weightdistribution width,then the feasibility of each method was analyzed. Moreover, given that performance evaluation of warm mix asphaltmixture still referenced for that of hot mix asphalt mixture, adhesion (water stability) evaluation method based on surface free energy and low temperature performanceevaluation method based on glass transition temperature were put forward to optimize the performance evaluation system of warm mix asphaltmixture.
Research on the Long-Term Memory of Commodity Housing Price Volatility Based on the FIGARCH Model
Authors: Lan Feng , Chen Bao Hua
Published: December 2014

The purpose of this paper is to test whether there exists a long-term memory volatility characteristics of housing price. The paper based on the data ranging of Zhengzhou from January 2004 to May 2014, by adopting the FIGARCH model, empirically studies and analysis this characteristics. The research results indicate that the price fluctuation of Zhengzhou commodity homes exist effect of cluster and long-term memory characteristic. FIGARCH model can capture the long memory well, and can predict the future price of commodity residential house for a period of time .Therefore, FIGARCH model can well catch long-term memory and forecast the commodity housing price in the future period of time, which illustrates that external shocks have long-standing impact on the volatility of commodity housing price as well, reaching the conclusion that long-effect Mechanism of regulation and control should be set and developed during the macro-control of the government.
Supervision Mode of Using Housing Maintenance Funds
Authors: Guo Bin , Yin Xin Ru
Published: December 2014

This paper has found that supervision departments--the department of property management and their subordinate housing maintenance fund management center play the role of “athlete” and “goalkeeper” at the same time when they do supervision of using funds. Then, it puts forward the model of joining third-party supervision. Again according to the analysis of property rights theory, the addition of the third party supervision can make property rights clarity. And it is considered that the way combining the daily supervision with the third party supervision can better control costs, reduce the supervision redundancy and obtain better supervision and benefit. At last, it puts forward feasible supervision mode from the supervision of personnel, the strength and resources three aspects to provide the reference of more efficient and safety using housing maintenance funds.
The Application of Computer IT in Power Business Power Equipment Management
Authors: Huo Ning Ning , Li Xue Lian , Wang Wen Long
Published: December 2014

With the rapid development of technology, computer information technology has been widely developed and applied, particularly in the management of power supply equipment in the enterprise. Because the structure and composition of the power system are more complex and diverse, making the power enterprise power equipment management encounter many difficulties, however, the application of computer IT in power enterprise power equipment management brings a new turn and hope for the development of power enterprises. In this regard, the paper mainly makes a detailed discussion and analysis the for the application of computer information technology in the power enterprise power equipment management, has important practical significance to promote the effective integration of computer information technology and power systems.
The Self-Interest and Altruistic Actions of Institutional Investor: Korea Evidence
Authors: Yuan Tang Mei
Published: December 2014

Using multiple regressions and large sample, this study finds evidence that firms with a high proportion of institutional investors tends toward influence managers to select efficient earnings management and restrain aggressive earnings management. This may result in firms health development and stock returns increase, which not only maintain institutional investors own interests, but also maintain the rights of the other small shareholders. This evidence is not consistent with any prior views of institutional investors role. This may shed a new light on this reach area and have realistic meaning and practice value.
Intelligent Control Technology and its Industrial Application Inquiry
Authors: Tang Sui Xin
Published: December 2014

With the rapid development of computer science and technology, each industry uses this technology to achieve the Intelligent control of the corporate production process. Intelligent control technology applications in the industrial field are more general, but also have made remarkable achievements. This article introduces the development and current situation of intelligent control, and analyzes the current system architecture model of intelligent control technology. After a comprehensive understanding of intelligent control technology, also describes its application in industry.
Urban Slow Transportation System Based on “The Living Environment and Urban Space ”
Authors: Yang Ke
Published: December 2014

Slow transportation system is currently a hot topic among Chinese scholars who are interested in either city planning or urban communications. Although their contentions regarding this issue vary, their concerns can be categorized into two main aspects: traffic speed, and the means of travelling. These two concepts are interconnected, as they at the same time contradict each other. However, traffic speed not only depends on peoples’ travelling methods; In this paper, the researcher intends to accomplish two things; one is to rationally study the “fast and slow” of urban traffic and the pedestrianization of urban streets, the other is to rethink the significance of “slow transportation system.”
Sludge Drying and Incineration Risk Evaluation under BOT Mode
Authors: Meng Jin , Liu Xiao Jun
Published: December 2014

BOT model are usuallyused in sludge drying and incineration project ,This model Effectively solvesthe government's funding gap, however, sludge drying and incineration project needslarge amount of investment and the project company face greater investment risk.How touse the scientific method for quantitative analysis of risk on drying sludgeincineration BOT project has become the most important issue.Based on a typicalproject, this articles analysis deeply the risk of the whole process of sludge incineration,and by quantitative andqualitative analysis, dentify the key risks led to project failure.
Formation Mechanism and Treatment of the Mudstone Landslide of Xi'an-Baoji Expressway, China
Authors: Wang Zhi Bing
Published: December 2014

There is a mudstone landslide that poses threat to ramp bridge of Xishan interchange of Xi'an-Baoji Expressway located in Shanxi province, China. This article analyzes the engineering geology and hydrogeological characteristics at first; and then find out that construction loading in the upper of the slope is the main reason for this landslide. Meantime, rainfall and the special geologic conditions of the slope are also two significant contributors to the slide. Landslide thrusts are calculated under natural state (123 kN/m) and saturated state (1645 kN/m) respectively, and used in the analysis of slope stability. A comprehensive treatment with slope cutting, anti-slide pile and drainage is design for the landslide.
A Study on the Regulations for Inspection Method of High-Rise Building Exterior Wall Tile in Taiwan and Japan
Authors: Liao Chu Tsen , Weng Chia Liang , Fang Yang Sheng
Published: December 2014

Tile is one of the most popular materials for high-rise building exterior wall construction in Taiwan. High-rise buildings in Taiwan were first built approximately 35 years ago. Wall tiles of these buildings currently are deteriorated facing the need of repair. In recent years, subject of exterior wall tile inspection at high-rise building have gained considerable attention. Taiwan government enacted the regulations on fire evacuation and equipment inspection for building safety. And attempt to add the article of exterior wall inspection for building safety. In other ways, high-rise buildings were first built approximately 50 years ago in Japan. Inspection and repair work for high-rise buildings plays an important role in the building construction market in Japan. Jurisdiction of Ministry of Land, Infrastructure, Transport and Tourism legislate the regulations “Periodic Report System”. Exterior wall inspection methods were regulated under these regulations. In order to sustain safety quality environment within existent high-rise buildings, it is necessary for Taiwan government to legislate on exterior wall inspection today. The purpose of this study is to compare the regulations for inspection method of high-rise building exterior wall tile in Taiwan and Japan. We hope the conclusion of this study could give a significant suggestion to Taiwan building inspection method in the future.
Comparative Analysis of Sino-Foreign Wind Load Standard
Authors: Li Chun
Published: December 2014

It has great significanceto conduct comparative analysis on wind load criteria at home and abroad forimproving anti-wind load capacity of the structure. A brief overview of Chinese,American, European and Australia wind load design codes of structure ispresented in this paper. The difference among these wind load codes, theadvantages and disadvantages of Chinese related standards are pointed out.Through comparison of wind load standard between Chinese code and otherstandards, through learning from foreign experience about the determination ofwind load criteria, improvement of wind load of electrical equipment andstandard revised recommendations are provided.
Evaluation Model of Bridges Health State Based on DHNN
Authors: He Min , Hu Rui Guang , Le Shi , Chen Liang
Published: December 2014

Inthis paper, according to the more important ten evaluation indicators, the fourgrades ideal evaluation is established corresponding to the level of healthstate of bridges. Combined with associative memory capacity of discreteHopfield neural networks, a new health state evaluation of bridges ispresented. Five bridges is evaluated by the model, the network connectionweights is obtained by iterative learning using the outer product method. Thesimulation results shows that the health evaluation model can evaluate thehealth state of bridges fast, accurately and intuitively.
Research on Static Load Tests of Damaged Bridge Strengthened with Pre-Stressed HFRP
Authors: Cai Chen Ning , He Shan , Liu Li Na , Ou Shi Kun
Published: December 2014

Thispaper presents an experimental study to strengthen an existing bridge usingpre-stressed carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer(GFRP) materials. The method using pre-stressed hybrid fiber reinforced polymer(HFRP) to strengthened structural members is an emerging pre-stressed strengtheningtechnology. In this study, experimental data selected from result of staticloading test conducted to hollow slabs with CFRP/GFRP has been compared with specimenswithout strengthening. Test results showed that the strengthening methoddeveloped in this study could effectively reduce the stress in hollow slab,improving the flexural rigidity and inhibiting the concrete from fracture.