bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation and Fixation Ability for Pb2+ of Geopolymeric Material Based on Bayer Process Red Mud
Authors: Xie Xiang Li , Peng Peng , Zhu Wen Feng , Wang Lin Iang
Published: October 2014

Geopolymeric material (geopolymer) was synthesized by casting and curing method using Bayer process red mud and metakaolin as starting materials. The fixation ability of the geopolymer for Pb2+ was studied by leaching method. The results shown that metakaolin played the role of aluminum and silicon donor during the initial strong alkaline aqueous phase. Red mud had principally the role of filler, increasing in this way the final compressive strength of the geopolymer. The compress strength of geopolymer curing 3 days from metakaolin and red mud mixture is 66MPa. The leaching concentration of Pb2+ from 50% red mud geopolymer is 0.891mg/L as the Pb2+ content in geopolymer is 2.5%; the metakaolin-red mud geopolymer has better Pb2+ fixation ability than metakaolin geopolymer.
Audio Signal Processing Based on FPGA
Authors: Zhang Jing Bo , Wang Xiao Feng , Zhang Shu Fang
Published: October 2014

This paper presents a system of audio signal processing based on FPGA,the system uses audio codec chip LM4550 to A/D transform and D/A transform the input analog audio signal and output digital audio signal.Using FPGA as the high speed signal processor to realize volume adjustment and audio effect control,so it can output different style music.Meantime, the system designs a FFT computing module and control system of VGA display interface,to compute the digital audio signal which is A/D transformed,and real-time display the frequency spectrum of audio signal on VGA.
Construction of Campus Network Service Platform Based on Virtualization Technology
Authors: Jing Shan , Qi Qi , Sun Run Yuan , Yang Bo
Published: October 2014

With the gradual improvement of the level of college informatization, it has become more and more important to build a stable and efficient service platform. In this paper, by analyzing the problems in the process of information construction of colleges, the research focuses on the platform of front-end server technology, reliability, security and manageability to complete the design and implementation of campus network virtualization service platform by adopting server virtualization technology. This research also provides the reference for small and medium-size campus network service platform construction and management.
An Online Jewelry Cert Print Service Based on Web Service
Authors: Li X.Y.
Published: October 2014

For implementing jewelry cert print in the web environment, based on web service and ActiveX technology, an online jewelry cert print service is proposed by encapsulation the jewelry cert print module running in the local network environment. The service can implement the cert typesetting and batch print, and can communicate soap message with other web services. The practicability and validity of the online jewelry cert print service is verified through the application in the jewelry inspection business management system.
Research on IP Traceback Technology Based on DDoS Attack
Authors: Tian Zhuo , Li Bai Cheng
Published: October 2014

DDoS attack threatens the stable development of internet and national information security seriously. IP traceback technology can track the attack packages to the attack source, and is making an important significance in against DDoS attack. For the DDoS attack, the basic theory and advantages and disadvantages of several common IP traceback technologies are analyzed and compared. Some ideas to improve the technologies are proposed by analyzing some current problems of IP traceback and source-finding technologies.
Segment-Based Proxy Caching for Streaming Media Delivery
Authors: Tian Zhuo , Li Bai Cheng
Published: October 2014

At present the majority of streaming media files is large and it requires a lot of network bandwidth and disk bandwidth. We propose an adaptive segment-based method, the cache replacement method and the multi technologies combined optimized transmission policy. Simulation results indicate that they are highly efficient methods for use of caching proxy server resources, reducing the startup latency and save of bandwidth of backbone network.
Research on Sharing Information Technology of Job Hunting and Recruitment Based on Mobile Internet and Web Service
Authors: Zhang Li Na , Yang Bo
Published: October 2014

The paper analyses the present situation and characteristics of job hunting and recruitment information sharing in China, takes a technical scheme of distributed data sharing based on mobile Internet and web service, combined with the actual situation of data source of job hunting and recruitment in China, designs and develops middleware of the application service. The scheme uses the mobile phone as the terminal, to publish and browse talent supply and demand data, to effectively solve the problem of distributed data sharing, and the use of google android integrated development environment-Android Studio, designs the information sharing platform of the job hunting and recruitment based on android system.
Research on Database Schema Comparison of Relational Databases and Key-Value Stores
Authors: Zhou Peng , Li Mei , Huang Jing , Fang Hua
Published: October 2014

With the rapid development of Internet technology, the management capacity of traditional relational databases becomes relatively inefficient when facing the access and processing of big data. As a kind of non-relational databases, the key-value stores, with its high scalability, provide an efficient solution to the problem. This article introduces the concept and features of Key-Value stores, and followed by the comparison with the traditional relational databases, and an example is illustrated to explain its typical application and finally the existing problems of Key-Value stores are summarized.
Research on Dictionary for Personalized Chinese Word Segmentation
Authors: Jiang Huan Jun , Ren Xiang , Liu Ke
Published: October 2014

One of the key technologies of the Web personalized service is the user’s model which can precisely describe user’s interests. Mining user’s interests by their behavior is an important method in this research field. In order to analyze and study user’s browsing documents in web personalized service, this article uses a new type of personalized participle dictionary. The experimental result shows that the method is feasible. In addition, it greatly improves the efficiency of the system.
Research on Mount Tai Tourism E-Commerce
Authors: Ren Xiang , Liu Ke , Jiang Huan Jun
Published: October 2014

The construction of informationization is an important indicator to the promotion of tourism services. Mountain Tai tourism is an important subject of Tai’an cultural tourism industry, and the tourist information construction has already have a certain amount of development, but there is still a great weakness to realize truly the goal of building cultural tourism. This article starts with tourist electronic commerce and put forward some ideas on Mountain Tai tourist information construction, hoping to make efforts to the construction of Mount Tai tourist informationization.
Analysis of Channel Transmission Performance in UHF RFID System
Authors: Lu Zhi Jia , Liu Zhen Yong , Han Wan Qiang , Li Yu Jian
Published: October 2014

This paper analyzes the characteristics of four kinds of possible channels in UHF RFID communication system, and makes a deep analysis on additive white Gaussian noise channel and binary symmetric channel. At the same time, it sets up the ASK modulation and demodulation simulation models of those two kinds of channels, summarizing the relationship between the bit error rate and the variety of signal to noise ratio of those two kinds of system. Finally, it concludes the optimal parameter of transmission process in the RFID system in experiments.
Design of Regional Coverage Resource Satellite Constellation Based on Analytical Method
Authors: Gao Hua Meng , Liu He
Published: October 2014

Using analytical method, based on the principle of effectively using satellite coverage area, constrained by satellite load operating height, the paper designed the regional coverage resource satellite constellation and presented all the design process. After that, the satellite orbit and constellation’s orbit parameters were obtained. Based on that, the resource satellite constellation graph was generated by using STK.
Research on Spaceflight TT&C Ground System Data Exchange Pattern Based on Google Protocol Buffers
Authors: Wang Yi , Li Yong Gang , He Jian Wei , Guo Li Bing , Wang Heng
Published: October 2014

Focus on designing data exchange pattern for Spaceflight TT&C Ground System based on Google Protocol Buffers, this paper carried through research and design on related critical technology. The basic theory and using method of Protocol Buffers were introduced, encoding and decoding mechanism using Protocol Buffers were designed, TT&C data processing & transmitting pattern as well as data structure renewing & maintaining pattern were discussed, and the advantages of applying Protocol Buffers to Spaceflight TT&C Ground System data exchange area were also analyzed.
Application of the IOCP in Multi-Domain Modeling and Simulation Based on Multiple Interfaces of Satellite
Authors: Ye Xin , Dong Zheng Hong , Pan Qing , Liu Li Hao
Published: October 2014

Aiming at modeling and simulation, the study of improving the performance of the method of multi-domain based on multiple interfaces of satellites by the IOCP technology were focused on. The satellite's attitude and orbit controlling simulation platform was build, with the server based on the IOCP technology build, and the designation problem of interfaces between different software solved, while the model of the satellite build, by using software , such as MATLAB / Simulink, ADAMS, Pro/E, STK and VS. Finally, the model of satellite's attitude maneuver was simulated, and the result proved the efficiency of the method of multi-domain based on multiple interfaces of satellites improved by the IOCP technology.
Research on the Model of Sports Action Features Based on the Computer Image Processing and Multimedia Databases Technology
Authors: Wang Zhi Dong
Published: October 2014

As we all known, the physical education and sports training are inseparable from the sports action, and the standardization of action is the key to raise the standard of sports. Meantime, in the scientific training process, the analysis and comparison of technical movements’ morphology are essential. And traditional motion analysis technology uses high-speed photography and video image analysis, which cannot accurately determine the action features, therefore cannot meet the needs of quantitative analysis and morphological analysis. In this paper, using the computer image processing and multimedia databases and other computer technology to do quantitative research on sports action characteristics, and establishing the motion feature model, all these will provide a scientific basis and action paradigm for sports teaching and training.
Projection Transformation on 3D Object’s Three Views
Authors: Wang Yu Lei , Gao Yin Han , Wang Wei Lei
Published: October 2014

We always use projection transformation to display and draw 3D object. With the aid of matrix transformation algorithm, this paper deduces projection transformation matrix of 3D object’s three views, gets these points’planar coordinate, then we can present the three views. It has practical application value.
Based on Simulink the MSK Communication System Design and Research
Authors: Tao Qiu Xiang
Published: October 2014

Minimum shift keying (MSK) signal is constant envelope modulation technology, It has the characteristics of continuous phase, high frequency band utilization, is very attractive in the field of wireless communications digital modulation mode, the current in short wave, microwave and satellite communications have been adopted. This paper studies the working principle of MSK modulation and demodulation, and then build simulation module based on Simulink environment, through the simulation design to render the MSK system performance advantages.
An Online Balance Weigh Service Based on Web Service
Authors: Li X.Y.
Published: October 2014

For implementing jewelry weigh with balance in web environment, based on web service, an online balance weigh service is developed by encapsulating RS232 interface with ActiveX technology, and then other web services can call the weigh service to get quality of jewelry ornament with SOAP message request. Practicability and validity of the online balance weigh service is verified through the application in jewelry business management system.
Reliability Evaluation for Tunnel Lining with Cracks Based on Extension Theory
Authors: Xue Xiao Hui , Su Zhong Ming , Sun Zhi Jie , Song Fei
Published: October 2014

In order to solve the problem of multi-index amalgamation on the reliability evaluation for tunnel lining with cracks, this paper based on extension theory, use matter element model theory to establish the matter element of the reliability evaluation for tunnel lining with cracks, use the dependent function to establish the relevance between matter element and reliability grade, combine the research result of the Beiru tunnel lining cracks disease to evaluate the reliability. The results show that it could consider the multi-index of the cracks to use the extension theory to evaluate the reliability of the tunnel lining with cracks, and the evaluation results are more scientific and reasonable. It is viable to use the dimensionless parameters to represent the crack geometry. In the K6, the treatment scheme is mechanical reinforcement. In the K2 and K3,the treatment scheme is surface sealing. The reliability evaluation results supply theory basis and technical guidance for the tunnel long-term health service and the disease treatment.
The Design of Network Communication System for Smart Phones Based on VoIP
Authors: Liang Gui Cai , Wu Yao Zhong
Published: October 2014

Along with the computer technology, network transmission technology and the rapid development of digital signal processing technology, the application of real-time multimedia services based on IP packet networks more and more, including VoIP is a typical multimedia communication based on IP packet network business, has become the hot topics in the study of the current technology. As a network researchers, to research and development of VoIP technology is of great significance. In this paper, the VoIP key technologies were studied, especially the SIP agreement, then put forward and designed a kind of network communication system for smart phones based on VoIP.
Performance Analysis of 60GHz Cooperative Communication System with Directional Transmission
Authors: Wang Min , Zhang Hao
Published: October 2014

60GHz wireless communication is a promising technology for multi-gigabit communication in future home networks. It brings possibility of achieving in-door high-definition multimedia applications with high-speed and low-delay experience. However, to maintain the network connectivity with 60GHz links, which are susceptible to propagation and penetration losses, is a major challenge. The quality and robustness of 60GHz links can be effectively improved by employing relay nodes or cooperative nodes in the network. In this paper, taking into consideration the directional transmission character of 60GHz system, we conduct performance analysis and simulations for the 60GHz cooperative communication system. Two cooperative forwarding approaches are analyzed and compared, and the optimal position of the cooperative relay node is proposed.
Research on Component Retrieval
Authors: Lv Sai Dong , Li Zhi Ping
Published: October 2014

How to quickly and effectively from the multiple candidate member of selecting optimal or approximate optimal components, so as to improve the success rate of component composition is a key problem. The basic idea of this article is based on tabu search algorithm; we design a tabu search algorithm, and prove the effectiveness of the proposed method.
Research on the Key Technology of Security Detection of Computer BIOS
Authors: Liu Wei , Lin Jun
Published: October 2014

The firmware is an indispensable basic system in computer systems. With the increase of BIOS chip capacity and module functions, the hidden security problems of BIOS are also more and more. But there is no BIOS production capacity in Chinese mainland currently. The whole information security system has not really established completely. In the circumstances of computer widespread using in the government, institutions, commercial, schools and so on, how to ensure and monitor the security of BIOS system has important significance to ensure overall control of information security in China. This paper proposes the design and implementation methods for BIOS security testing procedures and testing system through the analysis of BIOS security, and provides a new way of thinking for BIOS security.
Optimization Model Research on WSNs Intrusion Tolerance with Scale-Free Topology
Authors: Fan Xun Li , Du Fei Fei , Guo Jun , Zhang Jie
Published: October 2014

This paper proposes a new scale-free network BA Improved Model (BAIM) for the scale-free topology of WSNs intrusion tolerance issues. Through analyzing the power law index of the network invulnerability and topology of fault tolerance, the results of BAIM in the topology of the network survivability maximize the optimal network topology. Simulation results show that BAIM can not only keep the scale-free network robust to random failures, and but also improve the scale-free network vulnerability against intentional attacks and prolong the network lifetime.
Signal Detection Algorithms for Massive MIMO
Authors: Wang Xiao Tian , Yang Long Xiang
Published: October 2014

massive MIMO (also known as Large-Scale Antenna Systems),which is one of the key technologies for the fifth generation (5G) mobile systems, brings huge improvements in spectral efficiency and energy efficiency through the use of a large excess of antennas for base station. This paper analyses and simulates the performances of several signal detection algorithms under the massive MIMO system model. The results show that when the number of base station antennas is considerably larger than the number of users, even the simple signal detection algorithms can achieve good system performance.
Java Code Coverage Test Technology Based on EMMA
Authors: Liu Yan Yun , Hu Bin , Rao Li Ping , Pan Lin
Published: October 2014

Traditionally, at the end of functional testing, testers resort to the numbers of problems reported and the test cases executed to evaluate the adequacy of the testing. This method generally results in that testers have no confidence in the test results. Therefore, we introduce coverage to settle this problem. EMMA is an open source testing tool which detects and reports Java code coverage. In this paper, two actual functional testing as examples to explain the processes of using EMMA command line and EMMA with Ant to obtain code coverage, further to explain how to increase test cases to accumulate code coverage based on EMMA. The final code coverage analysis reports testify that using EMMA can greatly ensure the integrity of the functional testing.
The Design of Computer Network Traffic Monitoring System
Authors: Yin Xiao Hong , Guo Song
Published: October 2014

With the rapid development of Internet and the growing, today's network structure complexity is increasing day by day, network scale, network security has gradually become the focus of attention. To build a stable and secure network management system naturally become the focus of attention, one of network traffic monitoring system is one of the important means. The network traffic load monitoring system from the perspective of packet traffic analysis, through real-time information collection and monitor network packets, to check the network performance. It is help to monitor and analysis the network running status, improve the efficiency of network management and network security status, having a basic and decisive significance.
Study on Active Earth Pressure of Sheet Pile Model Test on Foundation Pit Engineering
Authors: Xia Xiong , Wang Yi Bo , Xu Han Dong , Xi Sai Ying , Huang Yi
Published: October 2014

In recent years, building density in the city is increasing as the promoting of urban modernization. Deep foundation pit excavation and bracing is a topic in geotechnical engineering, including strength and stabilization of soil mechanics, and transmutation and sedimentation of deep foundation, and common effect between soil and shoring structure. The paper based on the design and fabrication of indoor model test device. This paper respectively explored the destroy mechanism of cantilever and anchored sheet pile support structure on the soil pressure under the different loads, and comprehensively carried through cantilever and anchored sheet pile support test under four-grades excavation depth and four-grades load combination, and specially researched the transformation of soil pressure. At the same time, the piles spacing changed among 3cm, 4cm and 5cm. Theoretical results showed that the active earth pressure increased with the increase of load and excavation depth. Model test results showed that the earth pressure behind the piles increased with the increase of excavation depth and the load. The biggest earth pressure was 19.38kPa when loading 40kPa. The changing curves of soil pressure were similar when piles spacing was 3cm and 4cm. Earth pressure after the piles was negative when piles spacing exceeded 4cm, which illustrated that active earth pressure had changed into passive soil pressure.
Research on Cloud Computing Environment Energy Saving Optimization Method
Authors: Li Hong Li
Published: October 2014

In this paper, the background of cloud computing technology to study how to optimize cloud computing data center energy efficiency mechanisms. This paper analyzes the DVFS energy saving strategy, virtualization energy saving strategy, turn off / on energy saving strategies, such as the current mainstream strategy, comparing different energy saving strategies have not applied scenes.
Speculative High Performance Computation on Heterogeneous Multi-Core
Authors: Liu Cong , Wang Wen , Wang Zhi Ying
Published: October 2014

Thread level speculation has been proposed and researched to parallelize traditional sequential applications on homogeneous multi-core architecture. In this paper, a heterogeneous multi-core hardware simulation system is present, which provides with TLS execution mechanism. With a novel TLS programming model and a number of new speculative tuning techniques, benchmarkGzipis parallelized from-3% to 195% on a four-core processor, and the speedup of the test benchmarks are 30%, 43% and 156%, respectively with arbitrary, hotspot and insight speculation.
Implementation of IEEE 802.11s in OPNET
Authors: Yang Kai
Published: October 2014

Wireless mesh network (WMN) is an up-to-date network emerging with the development of wireless communication technology. Nowadays, it has become more and more popular. Along with this development, its performance has been research focus. However, the problem is that there are less than a handful of tools available to provide IEEE 802.11s mesh nodes or mesh models, which hampers its progressive research. In this paper, we propose a generic model for modeling and simulating IEEE 802.11s in OPNET. A prototype is implemented. According to the analysis of the simulation results, the proposed simulation platform satisfies the workflow of IEEE 802.11s and implements basic functions of IEEE 802.11s, and hence is shown to be an effective tool to develop IEEE 802.11s.
Framework and Design of the Enterprise Integration Based on SaaS Platform
Authors: Guo Yan Qun , Han Min , Sun Lin Fu
Published: October 2014

In the process of enterprise integration which carried on in the environment of could computing, we met the problems of multi-factor and the lack of systematic design. To solve the problems, the paper gives analyses on the enterprises integration requirements, and then puts forward the architecture of enterprise integration based on the SaaS platform. The paper designed the enterprise integration form the platform layer, the logic layer, the data layer, the exhibition layer and the business layer. And then focused on the technology of interface integration, data integration, service integration and business integration, the paper gives the design and realization of the key technology. In the practical application, we used the architecture on the design of the automobile supply platform which can realize the integration of the enterprises in the automobile supply chain, and improve the efficiency of the enterprise evidently.
An Improved Localization Algorithm in Wireless Sensor Networks
Authors: Li Ran Ran , Li Lei , Li Xiao Hui
Published: October 2014

Min-Max localization algorithm is usually used to acquire the position of a sensor node in wireless sensor networks by the reason of its simpleness and low complexity. However, Min-Max algorithm provides a coarse position estimation. In order to increase its accuracy, an Extended Min-Max (E-Min-Max) algorithm has been proposed. In this paper we focus on this algorithm and propose an improved E-Min-Max algorithm to enhance its accuracy further. Simulations show that the improved E-Min-Max algorithm outperforms its original version in localization.
Microstrip Balun Design Based on Metamaterial
Authors: Xu Sheng Hua , Zhu Wei , Guo Jin Cui
Published: October 2014

Proposed of a model of microstrip balun based on metamaterial ,it uses the unique aspect of negative dielectric constant and negative magnetic permeability of metamaterial in the microwave , and designs the dielectric substrate , based on which we constructed a microstrip balun which can translate unbalanced 50 ohm signal to 120 ohm balanced .Simulation results show that it can perform well at reducing the size of balun , at the return loss (s11) ,insertion loss (s21) from 2G to 6G. As well as it can effectively meet the two-ports phase difference about 180 degrees.
Influence of Stressed Skin Effect on the Bearing Capacity of Electrostatic Precipitator Casing Wall
Authors: Pan Li Cheng , Wang Xi Yan , Wang Deng Feng
Published: October 2014

In wall-column structural system of electrostatic precipitator casing, wall will share the load with column and provide lateral bracing support when the load is applied on the column .Then the wall panel exert the stressed skin effect, which will influence its load bearing capacity. By nonlinear finite element method, when wall panel exerts stressed skin effect, whether the effect will influence the wall bearing capacity is investigated as well as the failure mode. The relationship is analyzed between the loading level onto column, panel thickness, loading form onto wall and the affecting degree on the bearing capacity of wall panel. The computation results indicate that the bearing capacity of wall panel is lower when it exerts the stressed skin effect. When the wall is thin, the weakening degree of panel bearing capacity resulting from stressed skin effect is slightly affected by loading level onto column. When the wall is thicker, the weakening degree of panel bearing capacity increases apparently as the loading level onto column increases. For a certain loading level onto column, compared with the locally loaded wall panel, the impact on load bearing capacity is greater for the globally loaded wall panel. Research work has reference value for the calculation and design of enclosure structures of electrostatic precipitator casing.
Study on Preparation and the Setting Time of Magnesium Phosphate Cement
Authors: Liu Run Qing , Chen Ding Qiang , Hou Tian Bo
Published: October 2014

This paper mainly researched on preparation and the setting time of Magnesium Phosphate Cement (MPC). The method of orthogonal experiment was adapted to determine the best ratio of MPC, and change the content and types of the material according to the influence of various factors, so as to get the longer setting time of MPC. The results showed that, when the water cement ratio is 0.12, the factors significantly influencing the setting time is magnesium phosphorus ratio (M/P), fly ash and borax. The optimal mixture ratio was obtained through the orthogonal analysis, namely M/P is 3/1, borax content is 16%, and the amount of fly ash is 40%. When M/P is 1/1 and 2/2, borax content is not more than 22%, and the amount of fly ash was less than 60%, the longer setting time of MPC can be produced.
Application of Lime Soil Pile in Collapsible Loess Ground Treatment
Authors: Chen Pei , Cui Qiang
Published: October 2014

When the bearing capacity of natural foundation cannot meet load requirements, generally the ground treatment usually can be taken to strengthen it. In this paper, from the practical engineering, the design, construction, and detection of the lime soil pile were introduced. The results show that the lime soil pile in collapsible loess area reinforcement technology foundation is feasible. The bearing capacity and stability of the treated foundation can meet the requirements.
Finite Element Analysis on Integral Structures of Mobile Steel Buildings
Authors: Zhang Zheng , Cai Xue Feng , Ma Yong Chao , Lian Meng Yi , Zhou Ji Zhong
Published: October 2014

Mobile steel building is a prefabricated building built in a factory, with advantages on moving conveniently, simple structure and scalability. There are still not enough relevant standards and requirements to conduct the design and construction of this kind of buildings. In order to precede to theoretical study on integral structures of mobile steel buildings a method which used to set up finite element analysis model about this kind of structure was proposed. This method is based on finite element analysis software, ANSYS. Using this method a two-story structure model with one box unit in each story was analyzed. Lateral deformations under design load of the integral structure were solved out by these finite element models and were compared with the former experimental results, and the results were discussed.
The Finite Element Simulation Analysis of HPFL Reinforced Concrete Slab-Column Structure
Authors: Jiang Long Min , He Ai Bo , Huang Yan
Published: October 2014

High performance ferrocement laminate (HPFL) reinforcement method is used in this paper to make a finite element analysis on mechanical properties of five reinforced slab-column members. The analysis shows that the bearing capacity of reinforced slab columns and rigidity of midspan slab band have been improved accordingly. Furthermore, with different layout types (field type, groined type and, cross type) of steel mesh in reinforced layer, reinforcement effect and mechanical behavior of reinforced columns can be different. On the premise that punching shear resistance of original columns is strong enough, cross-type reinforcement is the best bending resistance reinforcement pattern of the best reinforcement effect with field-type reinforcement as the second. A reasonable selection of reinforcement pattern shall be made on the basis of the structure’s own mechanical characteristics while a reasonable reinforcement pattern can both ensure the effect of reinforced columns and cut the costs. Conclusions of the paper are supposed to provide some references for reinforcement design in practical engineering.
Enhanced Coupling Effect between Plasmonic and Dielectric Nanocylinders
Authors: Gu Qiong Chan , Jiang Xiao Xiao , Lv Jiang Tao , Si Guang Yuan
Published: October 2014

Surface plasmons have been used to enhance the surface sensitivity of several spectroscopic measurements including fluorescence, Raman scattering, and second harmonic generation. However, in their simplest form, SPR reflectivity measurements can be used to detect proteins by the changes in the local index of refraction upon adsorption of the target molecule to the metal surface. If the surface is patterned with different biopolymers, the technique is called Surface Plasmon Resonance Imaging (SPRI).
Effect of Pulse Electrodeposition Parameters on Microhardness of Ni-ZrO2-CeO2 Nanocomposite Coating
Authors: Liu Shuang Shuang , Xue Yu Jun , Xu Yang Yang , Li Ji Shun
Published: October 2014

Ni-ZrO2-CeO2 nanocomposite coating was prepared by pulse electrodeposition. The effect of addition of ZrO2 and CeO2 nanoparticles, average current density, duty cycle and pulse current on microhardness of Ni-ZrO2-CeO2 nanocomposites were studied. The results show that microhardness of nanocomposite is increased at first and then decreased with the increasing additive amounts of two kinds of nanoparticles. With increasing reverse the average current density, the microhardness of the composite coating increases. Also, the microhardness of nanocomposite fall with the increasing of pulse frequency. With the positive duty ratio increasing, the microhardness of the composite coating increase at first and then decreased, but with the increasing of the reverse duty ratio, the microhardness of nanocomposite coating is gradually decreased.
Experimental Research on Influencing Factors of Remolded Fine Soil Strength
Authors: Zhan Gao Feng , Gao Zhen , Zhu Fu , Dong Wei Zhi
Published: October 2014

In order to research on the influence law of fine soil strength affected by plasticity index, moisture content,compactness, the unconfined compressive resilient modulus of the soil is as the evaluation index of remolded soil strength. Three fine soils with different plasticity index are selected from field. Test scheme was obtained with the method of orthogonal design. By the static molding method,the soil sample was compacted from the prescriptive moisture content and compactness. The unconfined compressive resilient modulus of the soil sample were tested respectively. The experiments show that sort of influencing factors is plasticity index, moisture content, compactness. With the increase of plasticity index, remolded soil strength increases and increasing extent is significantly large. With the increase of moisture content, remolded soil strength decreases and increasing extent is larger. With the increase of compactness, soil subgrade strength increases, but increasing extent is significantly small.The exponential function is adopted for multiple nonlinear fitting. The relationship between the unconfined compressive resilient modulus and plasticity index, moisture content, compactness is obtained and shows a good correlation.
The Effect of the Calcium Leaching on the Microstructure and Rupture Strength of CA Mortar
Authors: Wang Yong , Deng De Hua , Yuan Qiang , Peng Jian Wei , Fang Lei
Published: October 2014

This paper deals with the effect of calcium leaching on the microstructure and rupture strength of cement asphalt (CA) mortar. It is conducted by an accelerated experiment method with species obtained from construction site. Results show that the leaching process mainly contains a total leaching of CaOH2 (CH) and some other cement hydrations. The leaching is proved by the “portlandite dissolution front” on the cross-section of species using a reagent of phenolphthalein. As time goes, the species are continually leached, and then the loss of mass and porosity ratio are obviously increased. Fick’s law can describe the relationship between leaching depth and time very well. The loss of mass and increasing of porosity ratio respond to the shrinking of mechanical properties of CA mortar.
Study of Dynamic Mechanical Properties on Cement Asphalt Mortar of High Elastic Type
Authors: Fang Lei , Deng De Hua , Peng Jian Wei , Wang Yong , Tian Qing
Published: October 2014

Dynamic mechanical properties of high elastic type cement and asphalt mortar (CA mortar) for high-speed railway was studied by split Hopkinson pressure bar (SHPB) in this paper. The experimental result show that the compressive strength of CA mortar increases gradually with the increasing of strain-rate. However, the increasing rate of compressive of CA mortar decreases with the further increasing strain-rate. The increasing rate of compressive strength is 57.65% for the strain-rate ranging from 25.16 s-1to 35.79 s-1 and 20.39% for the strain-rate from 94.64 up to 111.15 s-1, respectively. The larger the strain-rate is, the more serious the cracking is when CA mortar specimen damaged. The specific energy adsorption of CA mortar increases with the increasing strain-rate.
Studies on the Organic Utilization of the Traditional Materials in the Construction of the Folk Houses in North Guangxi
Authors: Liang Yan Min
Published: October 2014

Lying in the southwest of China and having a very unique environment and history, north Guangxi is known for its great variety of natural conditions and folk cultures. Addressing the application of the traditional construction material from the ecological prospective, this paper looks into how the traditional construction materials are utilized in the folk houses in the northern part of Guangxi, the reason behind and the impacts upon the architecture. The related finding will provide suggestions on the protection, renovation, as well as the inheritance of the traditional folk architectural heritage.
Analysis on In-Plane Seismic Performance of Aluminium Beams under Cyclic Bending
Authors: Zhang Zheng , Zhuang Jin Ping , Chen Xue Chao , Wang Zhi Bin
Published: October 2014

The in-plane mechanical properties of aluminium beams under cyclic bending were analyzed and contrasted to those of steel beams. In order to carry out research on in-plane seismic performance of aluminium beams, a finite element analysis method was presented. The method was based on general FEA software, ANSYS. The analysis method considered the effects of material nonlinearity and geometrical nonlinearity. On this basis, hysteretic curves and reversal skeleton curves of 6061-T6 aluminium beams, 6061-T4 aluminium beams and Q235 steel beams under cyclic bending were get and contrasted. The analysis shows that the in-plane seismic performance of the aluminium beams is similar with the low carbon steel beams and is notably influenced by material properties.
Influence of Pedestrian Number on Vibration Serviceability of Footbridge
Authors: Zhang Ju Bing , Zhang Shao Xia , Zou Ying
Published: October 2014

In recent years, the problem of the human-induced bridge vibration has attracted more and more concerns. In this paper , a steel structure footbridge named Shuang'an East in Beijing was taken as the example to collect the whole bridge vibration data and build the finite element model with the finite element software. In addition, this research changes the limitation of considering the pedestrian load as a whole with a traffic flow simulation software, which is based on social force model, applying to reflect the pedestrians' locations during walking. Comparing the simulation data with the the measured data, the vibration serviceability of footbridge will decrease with the increasing of the number of the pedestrians. The analysis results will provide reference for the dynamic characteristic of similar structures.
The Dynamic Response of a Steel Box-Girder Footbridge under Synchronized Human Stance Excitation
Authors: Zhang Ju Bing , Zhang Xian , Li Xiao Peng
Published: October 2014

In order to research into the dynamic response of a steel box-girder continuous beam footbridge excited by a synchronised human stance excitation, a in-situ test and a code comparison were conducted. Sixteen model 891-B accelerometers of vertical, horizontal and lateral directions were instrumented on the bridge and the vibration signals were aqcuired at a sampling frequency of 512 Hz. The acceleration data were transformed into frequency domain to find out the fundamental frequency of the bridge, and the frequency weighted root-mean-square acceleration data were analysed to evaluate the bridge’s vibration serviceability under synchronised human excitation. Further more, the international standard of BSI5400, Bro2004, EN1990, and ISO10137 were applied to the aquired acceleration data to compare their applicability. The results indicate that the dynamic response of the footbridge will not invite uncomfortableness of the pedestrians.
Degradation of Carcinogenic Hydroquinone in Coal Gasification Wastewater by Using Anaerobic Shaker Test
Authors: Ji Qin Hong , Tabassum Salma , Chu Chun Feng , Li Chun Jie , Zhang Zhen Jia
Published: October 2014

Coal gasification wastewater, as a typical industrial wastewater has poor biodegradability and high toxicity. In this paper, simple anaerobic shaker test was conducted to investigate the degradation of hydroquinone in coal gasification wastewater. Anaerobic sludge shaker test were run for 27, 50 and 73 days, the phenol concentration were adjusted to 300 mg/L and 500 mg/L with pH 7.5, respectively. The experimental results also showed that this system could effectively deal with COD and phenol removal and remain in a stable level when the operational parameters altered while the hydrolysis acidification at 45h is appropriate. Organics degradation and transformation of anaerobic coal gasification wastewater samples at 12h, 24h, 36h, 48h, and 60h were analyzed by GC/MS and it was found that hydrolysis acidification played an important role in degradation of methyl phenol, hydroquinone and refractory compounds. Therefore, the results illustrated that the simple anaerobic shaker process is an easy way for pollutant degradation and treat coal gasification wastewater effectively.
Rock Core Thin Section Image Stitching Based on SIFT Features
Authors: Yin Juan Juan , Cheng Guo Jian , Liu Na , Qiang Xin Jian , Liu Ye
Published: October 2014

Because of the inherent conflict between visual area and resolution in rock microscope structure, during the study of the RCTS (Rock Core Thin Section) microstructure, we cannot focus on the multi-scale structure characteristics of the particles, pores and throats, and it is fail to satisfy the demands of a more comprehensive study. In order to solve this problem, a microscopic image stitching method in RCTS is proposed by applying SIFT (Scale Invariant Feature Transform) detection algorithm. This method can successfully solve the conflict between the visual area and resolution, overcoming the problem of inclining and deformation in images acquisition under the microscope and finally, achieving the seamless stitching of RCTS microscopic image for big visual area. The experimental results show that this method can improve the accuracy of rock analysis in microstructure and has important practical and theoretical significance for the development of tight sandstone reservoir.
Elastic Modulus of Star-Shaped Honeycomb Structure with Negative Poisson's Ratio
Authors: Xin Zhou , Fan Wang
Published: October 2014

Negative Poisson's ratio honeycomb structure has unique mechanical properties. It has very good prospects for development. A mechanical model of star-shaped honeycomb structure is proposed and the mechanical properties of the model are derived. It can provide theoretical reference for engineering design of this kind of new structure.
Study on Construction Technology of Coal Mine Using Inorganic Solidification Foam
Authors: Yang Xing Bing
Published: October 2014

Selection of mechanical equipment is realized in the technical study on site. And according to different device powers and flow, relevant piping connections are perfected; then according to proportion of foaming agent developed in the lab, at the scene foaming equipment with compressed air is used to prepare foaming agent with good stability; then according to construction process, different dosage of early-strength admixture effecting the performance of compressive resistence of inorganic solidification foam materials in different time; at last, after the equipment being debugged well and relevant materials being prepared, inorganic solidification foam prepared to be 900 kg/m3 in the experiment is injected into baffle made from wood for solidifying; after 7 days, the dam constructed by this technology is detected with the result that there exists no apparent air leakage, forming a light closed-cell structure. The dam has a good performance of crack resistance and prevent air leakage.
Bending Response of Composite Sandwich Beams with M-Type Folded Cores
Authors: Cong Li Xin , Sun Yu Guo
Published: October 2014

Bending properties and failure modes of sandwich structure with carbon fiber composite M-type folded cores were investigated and presented in this paper. Three point bending responses of both sandwich beams were measured. The finite element method was utilized to determine deformation mode of sandwich beam with M-type folded cores. Cores buckling and debonding have been studied under three point bending and the maximum displacement was also studied using FE-analytical and experimental methods.
Effect of Finish Rolling Process on Improvement of Lamellar Tearing Resistance of High-Rise Building Steel
Authors: Li Xin Cheng , Luo Yu Ting , Zhu Wei Xing , Wang Xiao Li , Chen Yi
Published: October 2014

A process of finish rolling was researched to enhance lamellar tearing resistant of the high-rise building steel EH36. Experimental results indicate that gain size decreased with the decrease of finish temperature. When the finishing temperature on 840/810/780/750°C respectively, microstructure is finest with the size of 11.4μm. Moreover, the size of TiC precipitation turned ideal as the coiling temperature decreased. When coiling temperature is 550°C, the average size of TiC precipitation is only 0.09μm, refined by 40% relative to the conventional process. The microstructure and precipitation phase size of test steel are both effectively controlled because of the improved process. Therefore, high-rise building steel EH36 is finally prepared, and the lamellar tearing resistance reaches up to 78.2%.
On the Use of Waste Materials in Emergency Shelter - A Case Study on Ya’an Post-Earthquake Resettlement
Authors: Han Xu , Lin Geng , Tang Hao
Published: October 2014

Based on the shortage of materials during emergency rescue after the earthquake, it proposes the self-rescue principle for the temporal relocation of victims. Through analyzing different types of emergency shelter, and combined with features and purposes of local materials that can be directly used after the earthquake, it puts forward the method of locally selecting materials and rapidly building emergency shelters. It provides victims with a new choice for the temporal relocation during emergency rescue after the earthquake.
Progress of Intravascular Optical Coherence Tomography Image Technology and Vascular Three-Dimensional Reconstruction
Authors: Chen Yan Hua
Published: October 2014

Intravascular optical coherence tomography (IV-OCT) is a new intervention imaging technology for the diagnosis of coronary heart disease. Because of its high-resolution and non-invasive characteristics, it is widely used in clinical medicine. It has a revolutionary impact on coronary artery disease diagnosis, prognosis and treatment decisions. This paper studied this hot topic, gave the basic concepts of intravascular OCT image sequences. In accordance with current development studies, the key technology for three-dimensional reconstruction of the coronary vascular system is proposed and analyzed. On this basis, we proposed future research directions on IV-OCT vascular three-dimensional reconstruction, including clinical trial frequency domain OCT (OFDI), the combination of IV-OCT and intravascular ultrasound (IVUS) and a preliminary study of intravascular photoacoustic (IVPA) imaging.
Improved Ant Colony Algorithm and Application in Sequence Images of Prostate DWI Registration
Authors: Zong Xiao Ping , Zhang Hai Bin , Hao Lei , Wang Pei Guang
Published: October 2014

Because of the drift which exists in sequence image of prostate DWI (Diffusion Weighted Imaging), the global ant colony algorithm is introduced into the paper for registration optimization. The paper introduces an ant colony algorithm for continuous function optimization, based on max-min ant system (MMAS). This paper controls the transition probabilities and enhances the abilities of ants seeking globally optimal solutions by adding an adjustable factor in the basic ant colony algorithm and updating the local pheromone and global pheromone. Experimental results verify the effectiveness of the algorithm.