bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Collision-Proof Equipments for Non-Navigable Hole of Inland River Bridge
Authors: Liu Guo Bin , Lei Mu Xi , Lei Zheng Bao , Chen Chen Chen , Ou Bi Feng
Published: June 2011

This paper is based on the two model demonstrative project of science and technology of Changsha-Xiangtan highway which are non-navigable piers, which belong to a new extra large bridge in Xiang River. We designed Collision-proof equipment for the piers to prevent the collision between the bridge and ship. Considering the crash conditions of the local actual environment, the design could withstand the collision force created by a Ship loaded with 2000 tons, and plays a certain guiding function, so as to ensure the safety of the bridge. This paper had designed a variety of programs through UG,VPG/LS-DYNA model and simulation software, through comparing, eventually determined the optimal scheme.
Progressive Collapse Mechanics of Reticulated Dome under Impact
Authors: Wang Duo Zhi , Dai Jun Wu , Fan Feng , Zhi Xu Dong
Published: June 2011

FE models of both the single-layer Kiewitt reticulated domes and the impactor were developed incorporating ANSYS/LS-DYNA. Three failure modes for Kiewitt reticulated dome under impact load are discerned. Moreover, Global collapse of structure belongs to the progressive collapse, and is the most serious failure. After this, stress of members, velocity and strain energy of each component are introduced to display the progressive process of collapse. It shows that the dome does not defend impact load as a whole. Each component of structure is impacted and dented in turn. And the collapse enlarges from impact zone to the supports of dome. Furthermore, collapse relates to energy transform among kinetic energy, stain energy and potential energy of structure. Moreover, collapse will continue, if initial kinetic energy and release of potential energy of structure exceed the strain needed.
Vibration Source Inversion and Vibration Evaluation of a Tall Residential Building
Authors: Li Min Feng , Jin Guo Fang
Published: June 2011

Vibration sources, which caused the vibration of a shear-wall residential building, are inversed in this paper. In light of the test data, frequency-domain analysis is presented, and a finite element model is established. Furthermore, the time-domain acceleration responses of the structure are obtained. In compare with the British standard Vibration Dose Value (VDV) method, an Annoyance-Based Checking Procedure (ABCP) is proposed to evaluate the vibration of the building. The analysis indicates that both results agree reasonably well. A suggestion for structure engineers is proposed to consider the effect of environment vibration in the vicinity of the building.
Vibration and Bridge-Borne Noise from Urban Rail Transit Trough Beam
Authors: Han Jiang Long , Wu Ding Jun , Li Qi
Published: June 2011

Vehicle-track-bridge dynamic interaction analysis is applied to compute local dynamic responses of a trough beam under urban rail transit train by mode superposition method. The modal acoustic transfer vectors (MATVs) are obtained by boundary element method. The bridge-borne noise at different field points is then computed based on the MATVs and Fourier spectra of the mode coordinate responses of the bridge. The numerical results show that the noise level is significantly affected by the train speed but hardly influenced by the fastening stiffness. The residents in the high-rise buildings near the bridge may be much affected by the bridge-borne noise.
3-D Numerical Analysis on Performance of Prestressed and Precast Concrete Segment Joint
Authors: Liu Feng Jun , Xie Lei , Zhu He Hua , Yu Ning
Published: June 2011

The rotational angle of joint is the key factor for segment lining design. Using the nonlinear finite element program of MARC (MSC2003), the 3D numerical analysis on segment joint of prestressed concrete lining has been carried out. During the analysis, Coulomb and Stick-slip friction models were used as the friction type between the concrete and the prestressing steel strands. The selection of friction model used in the numerical analysis is very important. The study showed that the Stick-slip friction model is more suitable than Coulomb friction model for analysis of the P&PCSL joint. The value of friction coefficient should be thought over carefully.
Numerical Study on Progressive Failure of the Marble Plate Based on the Thin-Layer Tri-Node Jointed Element
Authors: Qi Jing Hua , Zhang Zhen Nan , Ge Xiu Run
Published: June 2011

In order to model the mechanical behavior of joints efficiently, a thin-layer tri-node joint element is constructed. The stiffness matrix of the element is derived in the paper. For it shares the common nodes with the original tri-node triangle element, the tri-node joint element can be applied to model the crack propagation without remeshing or mesh adjustment. Another advantage is that the cracked body is meshed without consideration of its geometry integrity and existence of the joints or pre-existed crack in the procedure of mesh generation, and then the triangular element intersected by the crack or joint is automatically transformed into the tri-node joint element to represent pre-existed cracks. These make the numerical simulation of crack propagation highly convenient and efficient. After CZM is chosen to model the crack tip, the mixed- energy simple criterion is used to determine whether the element is intersected by the extended crack or not, the extended crack is located in the model. By modeling the marble plates with two edge cracks subjected to the uniaxial compressive loads, it is shown that the numerical results are in good agreement with the experimental results, which suggests that the present method is valid and feasible in modeling rock crack propagation.
On Validity of the Crack3D FEM Code to Solve the Crack Cylinder of the Saint-Venant's Torsion Problem
Authors: Tang Xin Yan
Published: June 2011

This paper examines the validity of the Crack3D FEA Code method to solve the crack cylinder of the Saint-Venant’s torsion problem. To finish it, a useful comparison was obtained between the numerical results calculated by two different methods on the crack cylinder.
Secondary Development of ANSYS Software to Calculating Sunshine Temperature Stress of Hollow Pier
Authors: Ge Jun Ying
Published: June 2011

For hollow but high bridge piers, single side sun exposure causes great temperature stress. Currently, the bridge specifications of each countries have different regulations on hollow pier’s temperature load, partly can only reference to the temperature gradient curve of box girders, but the errors might be large sometimes. This paper gives a method to calculate the hollow pier’s temperature field and stress that caused by solar radiation, a method which can consider any region, any season and any time. A secondary development is also applied to reinforce ANSYS software, and the aforementioned functions is embedded in the ANSYS GUI.
A Beam-and-Column Based Macro Model for Masonry Infill Walls in RC Frames under Cyclic Loading
Authors: Zhang Jia Chao , Zhang Lei Ming , Liu Xi La
Published: June 2011

Reinforced concrete (RC) frame with masonry infill walls is a very common structural system in low and medium rise buildings. The infill walls are usually considered as non-structural components in the design or assessment of buildings. However, many damages in earthquakes have shown that the infill walls can significantly change the structural response to seismic action. Consequently the evaluation of the seismic performance of RC frame with masonry infill walls becomes very important, and also turns to be a major challenge for structure engineers. In this paper a beam-and-column (BAC) macro model for walls is proposed to simulate the masonry infill walls in RC frames. In this model, the masonry panel is replaced by an equivalent rigid frame which is made up of some beam-and-column members. The geometric parameters of each member can be determined simply by equivalent stiffness combined with the original dimensions of wall panel. The physical characteristics are described directly by material properties of wall panel under investigation. To validate the rationality of proposed model, a masonry-infilled RC frame under cyclic reversed loading is analyzed by the proposed model. The results, including crack pattern, load versus displacement relation are then compared with the experiment response. Good agreements are found.
Study on the Dedicated CAD Sub-System for Custom Tooling
Authors: Cheng Xiang , Liu Jun Ying , Yang Xian Hai , Tian Zhong Qiang , Jia Peng
Published: June 2011

Custom tooling is an effective method to improve surface roughness, geometrical accuracy, machining efficiency, and consequently the core competitiveness of the final products in very complicated freeform creation and micro/nano machining, such as the propeller, blisk and ductile-mode machining of hard and brittle materials. However, commercially available CAM systems have limitations in generating CNC programs for these customized tools due to considerations for special custom tool fabrication processes. Therefore unique CAM system is needed and consequently dedicated CAD sub-system is the prerequisite for such CAM system. In this paper, the dedicated CAD sub-system design is studied to extend the authors’ previous study. The characteristics of customized tools are summarized and analyzed. Then, the functions for the dedicated CAD sub-system are analyzed and defined. Finally, the system is designed and developed by using VC++, Open CASCADE, and ActiveX Data Object techniques.
Design Method of Longitudinal Bracing Force Based on Monte Carlo Simulation
Authors: Zhao Jin You , Guo Xun , Liu Wan Cheng , Zuo Hong Liang
Published: June 2011

The bracing force of top horizontal braces supporting a row of columns under the only vertical load has been investigated in this paper. A large number of one-story longitudinal column-bracing systems were modeled and analyzed by second-order analysis using finite element method, in which the random combination of the initial imperfections between columns and braces was well considered by Monte Carlo method. According to the analysis results, three kinds of instability modes of one-story column-bracing system have been found, triple-normal probability density function of the top horizontal bracing forces is established based on probability statistics, and the design bracing forces are also obtained. A check method based on the vertical load analysis is supplied for the top horizontal bracing forces which are usually designed by the longitudinal horizontal load.
Preprocess and Post-Process Tunnels with Parameterized EPS Layers Based on ABAQUS Using Python
Authors: Wang De Ling
Published: June 2011

In this study, expanded polystyrene (EPS) geofoam is placed between first lining and second lining of tunnels, serving as isolation buffer in earthquake. In order to investigate isolation effect of elastic modulus and thickness of EPS layer, ABAQUS script interface based on Python language is employed. The technological process of this parameterized analysis is elaborately designed. Parameterized modeling is realized by secondary development which controls the preprocessing process. Some technology such as infinite element boundary, definition of initial ground stress field, modification of input file and stress report in preprocessing is described. Python language is also used for secondary development of ABAQUS post-processing. Then the simulation results of different models under earthquake can be effectively computed from huge result data. The isolation effect with the change of elastic modulus and thickness of EPS can be presented clearly. That is, with the decreasing elastic modulus and increasing EPS layer thickness, the isolation effect is more obvious.
Finite Element Analysis of a Steel Spiral Staircase with Multiple Supports
Authors: Chen Tao , He Hua Dong
Published: June 2011

This paper presents finite element analyses of a steel spiral staircase with multiple supports. The complex geometries were modeled using commercial finite element method (FEM) software. Linear elastic analyses were carried out to investigate its deformation and moment distribution. Besides these, mode analysis was also performed to explore its pedestrian comfort. Finally the reliability of the structure is proved.
Data-Based Adaptive Fuzzy Wavelet Filter for Robot-Assisted System
Authors: Liu Zhi , Wu Qi Hang , Zhang Yun
Published: June 2011

One of the main problems for effective control of a minimally invasive surgery (MIS) is the imprecision that caused by hand tremor. In this paper, a new kind of nonlinear adaptive filter, the fuzzy wavelet neural network filter (FWNNF), is proposed to alleviate this problem. With the FWNNF, we can model and predict the hand tremor more effectively and improve the precision and reliability in the robot-assisted system for microsurgery. Extensive simulation results demonstrate the effectiveness of the proposed filter and its superior performance over its competing rivals.
The Research on Mediating Effect Model of Relationship Benefits in Materials Industries: Data Mining
Authors: Kong Qing Min , Zhang Ming Li
Published: June 2011

This article introduces the relationship benefits into the research area of materials industries. Through data mining, the study has shown that in the materials industries area, through relationship benefits, relationship marketing have significant impact on customer loyalty, relationship benefits play a fully mediating effect role. If customers of materials industries receive the relationship benefits from materials industries enterprises, they would maintain the relationship with materials industries enterprises. Our conclusions have the guiding effect for the materials industries enterprises, especially for the materials industries service enterprises.
User Identification Based on Force-Sensing Keypad by Force-Space-Time Method
Authors: Tang Liang , Yang Chang Qi , Wu Zhi Wen
Published: June 2011

In this research, a force-sensing keypad was constructed by adding the pressure sensors with the individual keys on the standard keypad. The sensors permit the dynamic measurement of applied force and key-press timings. It can provide an advantage of more detailed information about key-press force. Details of the experimental setup used are given, and the results from initial tests are reported. The results shows the force-space-time method for user identification based on force-sensing keypad is valid.
Enhancing the Flexibility of Kademlia under Churn
Authors: Xu Qiang , Sun Le Chang , Zhang Min , Zhao Ting
Published: June 2011

Churn is a great challenge for the development and deployment of Distributed Hash Table networks, but current churn treatments ignore the effect of adapting the size of routing table flexibly to handle churn. In this paper, we research the routing table self-adaptive mechanism for Kademlia. Based on quantifying the influence ofK, the parameter representing the size of ak-bucket, on routing performance, a self-adaptive algorithm of K is proposed. This algorithm adapts K to the variation of churn rate which is estimated by the validity of data in routing table. Simulation results show that it can reduce the lookup latency under churn. Even if the churn rate varies remarkably, the network is flexible enough to provide fine performance.
Super-Resolution Reconstruction of Video Sequences by GST-Driven Adaptive Filtering
Authors: Guo Lin , Lian Li Zhen
Published: June 2011

A GST-driven spatially adaptive filter is developed in this paper based on the framework of non-local means (NLM) avoiding explicit motion estimation. Gradient Structure Tensor (GST) is introduced to express the underlying local image structural patterns, which drives the window function to yield adaptive scale and shape fitting for the local structure. This leads to patches with more similar gray-level and local structures being gathered for super-resolution estimation of image. Results on several test video sequences show that the proposed method is effective in providing super-resolution on general sequences and achieves improvement of performance on the compared method.
ID-Based Deniable Ring Signature with Constant-Size Signature
Authors: Hu Cheng Yu , Liu Peng Tao
Published: June 2011

The ring signature can guarantee the signer’s anonymity. Most proposed ring signature schemes have two problems: One is that the size of ring signature depends linearly on the ring size, and the other is that the signer can shift the blame to victims because of the anonymity. Some authors have studied the constant-size ring signature and deniable ring signature to solve these two problems. This paper shows that an identity-based ring signature scheme with constant size has some security problems by using an insecure accumulator and its verification process does not include the message m. Then we combine the concepts of “constant-size” and “deniable” to form an id-based deniable ring signature with constant-size signature. The new scheme with constant-size signature length is proposed based on an improved accumulator from bilinear pairings and it solves the problem of anonymity abuse.
Enforcing Data Privacy in Outsourced Database Services
Authors: Yu Yong Hong , Bai Wen Yang
Published: June 2011

Advances in networking technologies and the continued growth of the internet have triggered a new trend towards outsourcing data management and information technology needs to external service providers, and privacy requirements have an increasing impact on such real-world applications. In this paper, we propose a solution to enforce data privacy over outsourced database services. The approach starts from a flexible definition of privacy constraints on a relational schema, applies encryption on information in parsimonious way and mostly relies on attribute partition to protect sensitive information. Based on the approximation algorithm for the minimal encryption of attribute partition and the decomposition of SQL queries, the approach allows storing the outsourced data on a single database server and minimizing the amount of data represented in encrypted format, and allows executing queries over encrypted outsourced database efficiently.
A Novel Secure Communication Scheme Based on Chaotic System
Authors: Wei Peng Cheng , Ran Wei , Huang Jun Jian
Published: June 2011

A secure communication scheme based on piecewise linear chaotic system is proposed. Two Chaotic Systems are used in this algorithm, with a symbolic sequence generated by a Chaotic System the message sequence is tracked, employing the chaotic masking technique the message for transmitted is encrypted with a binary sequence extracted from another Chaotic System. The theoretic and experience results stated that the proposed algorithm has many properties such as high speed and easy implementing and high security and it is suitable for practical use in the secure communication.
Research on Exact Lower Bounding Segmentation of DTW Distance
Authors: Feng Lin , Xu Chang You , Zheng Hu , Jin Bo
Published: June 2011

Dynamic time warping(DTW) distance is the most effective similarity measurement methods in time-series data mining area. Because of the high computational complexity of DTW, it is not suitable for huge amounts of data. Thus, some DTW distance lower bound methods are proposed, which can improve the efficiency of DTW distance calculation. In this paper, we summarized the existing lower bound of DTW method and then proposed a closely related field with the application and exacted Lower Bounding distance measure with Segmentation(eLBS). Experiment results show that this method meet the need of non-omission.
Research on Human Behavior Recognition in Video Surveillance
Authors: Zhu Wen Qiu , Li Qian Qian , Man Jun Feng , Wen Xiang Bing
Published: June 2011

For effectively solving human behavior recognition in video surveillance, a novel behavior recognition model is presented. New behaviors may be produced in the process of human motion, hierarchical Dirichlet process is used to cluster monitored feature data of human body to decide whether unknown behaviors occur or not. The infinite hidden Markov model is used to learn unknown behavior patterns with supervised method, and then update the knowledge base. When knowledge base reaches a certain scale, the system can analyze human behaviors with unsupervised method. The Viterbi decoding algorithm of HMM is adopted to analyze current behavior of the human motion. The simulation experiments show that this method has unique advantage over others.
Plant Identification Based on Artificial Intelligence
Authors: Gan Yang Ying , Hou Chun Sheng , Zhou Ting , Xu Shu Fa
Published: June 2011

Species identification plays an important role in botanical research, but traditional identification tool, which mainly depends on reference books or identification keys, is often recognized as a difficult and frustrating task, especially for novices. In recent decades, many efforts have been made by taxonomists and programmers to ease the difficulty of species identification by developing a range of tools that increasingly involved the use of computers. In this paper, new advances of plant identification based on three main artificial intelligent technologies: expert system, artificial neural network, and machine vision are briefly introduced. Several trends of plant identification tools for non-expert users are also proposed in the last part.
Nonlinear Finite Element Analysis on CFRP-Confined Square Concrete Column under Cyclic Lateral Loading
Authors: Chen Qin , Wu Hui
Published: June 2011

An analog computation of carbon fiber-reinforced polymer (CFRP)-confined rectangular concrete column under cyclic lateral load is carried out using the finite element method (FEM) and is compared with the experimental results. The comparison indicates that the FEM could accurately predict the behavior of CFRP-confined reinforced concrete (RC) column under cyclic lateral loading. The reinforcement mechanism of carbon fiber sheets on RC columns is studied by analyzing the results calculated with FEM such as the stress-strain of carbon fiber sheets, stirrups, and concrete. The effect of axial compression ratio and the number of layers of fiber sheet on the ultimate bearing capacity and displacement ductility of RC column are studied by the finite element analysis. Part of the conclusion, namely, the effect of the number of layers and setting height of fiber sheet on the RC column, offers the reference and basis for further engineering application. template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.
Analysis of Seismic Resistance Capability of Masonry Structure
Authors: Liu Hong Biao , Guo Xun , Yu Yuan Yuan
Published: June 2011

In order to analysis the seismic resistance mechanism of Staff apartment block of Beichuan telecommunication bureau (a six-storey-high masonry building in Beichuan County, meizoseismal area of Wenchuan earthquake), which just suffered from a moderate damage in the earthquake, ambient vibration survey and numerical simulation of structural earthquake response are carried out. Based on the ambient vibration survey, the natural frequencies of the building are acquired after Wenchuan earthquake. The first natural frequency in transverse and longitudinal is 3.45Hz and 3.65Hz, respectively, and the torsion frequency is 4.05Hz. The second natural frequency of the building in transverse is 7.55Hz, and that in longitudinal is not tested out. With Abaqus software, the earthquake response is computed out by inputting Wolong earthquake wave recorded in Wenchuan earthquake. The results of numerical simulation illustrate that the maximum acceleration amplification factor of the top floor in transverse and longitudinal is 5.28 and 6.68 severally. The maximum inter-story drift in transverse and longitudinal is 1/359 and 1/274 respectively, which are all exceed the limit of inter-story drift of masonry structure.
Comparison between Supporting Structure Programs in Deep Foundation of Zhengzhou Exhibition Hotel and Analysis on Monitoring Results
Authors: Chen Gui Xiang , Xiao Zhao Ran , Shan Ming
Published: June 2011

This article compared the two supporting structure programs which were prepared for the foundation pit of Zhengzhou Exhibition Hotel, from the angle of cost, duration, and deformation conditions. The better one was selected for the project. Monitoring results of two important indicators with the security of supporting structure were analyzed, they were deep displacement in supporting structure and displacement of pile top. With the conditions of continuous excavation, this paper also concluded shifty discipline and tendency of the supporting structure, which could provide some references to similar projects.
Seismic Performance Evaluation for Steel Reinforced Concrete Frame Structures
Authors: Wang Qiu Wei , Shi Qing Xuan , Tang Liu Jiu
Published: June 2011

The randomness and uncertainty of seismic demand and structural capacity are considered in demand-capacity factor method (DCFM) which could give confidence level of different performance objectives. Evaluation steps of investigating seismic performance of steel reinforced concrete structures with DCFM are put forward, and factors in calculation formula are modified based on stress characteristics of SRC structures. A regular steel reinforced concrete frame structure is analyzed and the reliability level satisfying four seismic fortification targets are calculated. The evaluation results of static and dynamic nonlinear analysis are compared which indicates that the SRC frame has better seismic performance and incremental dynamic analysis could reflect more dynamic characteristics of structures than pushover method.
Dynamic Response Analysis for Intersection of Transverse Traffic Tubes and Main Tunnel in a Highly Seismic Region
Authors: Chen Lin Jie , Liang Bo , Wang Zhi Yong
Published: June 2011

The intersection of the transverse traffic tube and main tunnel is the weak link in the tunnel, as its structural forms are changed greatly and stiffness is discontinuous, so it does not help resist the seismic action. Based on the soil-structure interaction model and the use of visco-elastic boundary conditions and of time history analysis method, this paper, in combination with the Menglian tunnel engineering on the Bao-Teng Highway in Yunnan, has made a research of seismic dynamic response in the aforesaid intersection by analyzing its seismic dynamic characteristics and stability upon acquiring its displacement, stress, acceleration of dynamic response and distribution characteristics, and then put forth some disposal measures by seismic reinforcement, which can serve as reference to seism-reducing design of the weak link in the tunnel as well as other similar projects in a highly seismic region.
Research on Elastic-Plastic Seismic Response of Inclined Mega-Structures
Authors: Zhao Nan , Jiang Lei Xin
Published: June 2011

With a special structure system and architectural shape, Kelamayi Exhibition Building has a quite complicated seismic response and dynamic behavior. Based on performance-based seismic design method, vibration characteristics and seismic response under different earthquakes are researched in this paper. Elastic-plastic model is made, and elastic-plastic time history analysis of structure subjected to strong earthquake is carried out, to verify the bearing capacity of the structure according to aseismic behavior indexes. The results of static analysis and elastic-plastic time history analysis show that, the maximum storey drift angle is less than the limit value 1/100. Parts of the structure is in plastic, but not deep, and can be put into use after some repairment. In a word, Kelamayi Exhibition Building can meet the requirement of seismic fortification and fixed aseismic behavior indexed, and have enough seismic bearing capacity.
Test of Fire Response of a Profiled Sheet-Ceramsite Concrete Composite Floor
Authors: Wang Xin Tang , Wang Hai Jiang , Zhou Ming , Ji Yao
Published: June 2011

For study of the post-fire characteristics of the profiled sheet-ceramsite concrete composite floor (noted as PSCCF) subjected to fire load, the experimental research on post-fire bearing capacity of a PSCCF after fire is carried out. Based on the experimental results, effect of the fire on post-fire bearing capacity of the profiled sheet-ceramsite concrete composite floor is discussed, and the failure phenomenon and mechanism are analyzed. It is shown that the failure form of the profiled sheet-ceramsite concrete composite floor after fire has great change compared with the floor not subjected to fire load, but the composite floor subjected to fire still exhibits higher bending capacity, and the ultimate value of the equivalent distributed load is up to 25kN/m2, which may be used as basis of strengthening and repairing of the profiled sheet-ceramsite concrete composite floor after exposure to fire.
Seismic Vulnerability of Long-Span Continuous Rigid Frame Bridge with High Pier Based on Fiber Model and IDA Method
Authors: Gu Yin , Zhuo Wei Dong , Zheng Wen Ting
Published: June 2011

The failure behavior and the vulnerable position of the rigid frame bridge are analyzed by nonlinear response analysis, based on incremental dynamic analysis (IDA). The damage index, applying for long-span continuous rigid frame bridge with high pier, is studied. The seismic vulnerability problem of the whole bridge is analyzed by fiber model. The strain was used for damage index of piers. The displacement was used for damage index of bearings. According to the studies above, the fragility curves are established based on integral performance of the bridge.
Behavior of Lolium perenne, Festuca arundinacea and Trifolium repens Growing in Textile Dyeing Sludge
Authors: Lu Xu Jie , Liu Qiong Yu , Li Xiao Ge , Xi Dan Li
Published: June 2011

A greenhouse pot experiment was carried out to evaluate the feasibility of three turfgrasses:Lolium perenne, Festuca arundinacea andTrifolium repensfor the phytomanagement of textile dyeing sludge. The sludge was mixed with soil at proportion of 0, 25%, 50%, 75% and 100% (w/w), respectively. This experimental result showed that good responses were observed among them, improved physical and chemical properties of the textile dyeing sludge, all parameters were respectively lower than before. The chlorophyll content increased in the amount of textile dyeing sludge. Compared with the control, the total chlorophyll contents of L. perenne, F. arundinacea and T. repens increased by 50%, 97% and 42%, respectively, under the condition of 100% textile dyeing sludge. However, there has been a decrease in the root activity of L. perenne, F. arundinacea and T. repens, which are 28%, 29% and 43%, respectively.
Simulation of Simultaneous Nitrogen and Phosphorus Removal in MUCT System by ASM2d
Authors: Wang Xiao Ling , Yin Jun , Wei Xin Dong , Gao Shang
Published: June 2011

Based on ASM2d, establish a mathematical model to describe the transformation of different components including carbon, nitrogen and phosphorus, to explore the consistency between simulation and observed values of different compunents, to anlyze the kinetics and stoichiometric parameters in MUCT process. The results showed that, the qPHA, KA, KPP, YPO4, μAUTand ηNO3were 2.90gXPHAg-1XPAOd-1, 3.85gXPHAg-1XPAOd-1, 1.35gXPHAg-1XPAOd-1, 0.35, 1.6 and 0.8, respectively. The typical parameters given by the ASM No. 2d were used as others kinetic and stoichiometric parameters.
Comparison and Analysis of Denitrification Effect and Kinetics Regarding Several New Type Carbon Sources
Authors: Li Hao Yan , Yang Dian Hai , Wu Hai Yan , Lu Qin , Zheng Xiang
Published: June 2011

Three typical external carbon sources (i.e. leachate, hydrolysates from primary sludge and starch solution) with regard to the denitrification process were investigated respectively in sequencing batch reactors (SBR) and their denitrification properties were compared to provide the optimum substrate suited for nitrogen removal processes. The variations of nitrogen were examined and nitrate utility ratio as well as carbon consumption rate was exhibited, denitrification kinetics regarding leachate was also analyzed by use of zero-order kinetic model. The experimental results indicated that the similar denitrification trend was achieved between hydrolysates from primary sludge and starch solution other than leachate as carbon source in denitrification system. The nitrate was not entirely degraded and the nitrite generated permanent accumulation. Compared with other carbon sources, leachate in steady operation showed the highest nitrate removal concentration and rate in phase I with an average of 13 mg/L and 86%, respectively. In phase II, the maximum nitrate and carbon decomposition rates were 0.088 g N/g VSS•d and 0.848 g TOC/g VSS•d respectively occurring at leachate as substrate. Thus, stable leachate was considered as the most suitable carbon source in comparison with other substrates.
Experiment Research on Extraction Method by Chloroform Treatment Poly-THF Wastewater
Authors: Ai Sheng Shu , Zuo Yan , Wan Li Guo , Cui Zhen Feng , Bian De Jun
Published: June 2011

Poly-THF production wastewater was treated by Liquid-liquid extraction method, chloroform as extraction agent. the influences of phase ratio and temperature, extraction equilibrium time on wastewater treatment effect have been studied. The results showed that, under the operating conditions of temperature of 25°C, phase ratio 1:1 and extraction equilibrium time 40 min, CODCr removal efficiency above 75% is achieved, in order to lay the foundation for subsequent treatment.
Innovative Stormwater Treatment Implementation at Parking Lot in China
Authors: Zhang Ru , Tafuri Anthony N. , Field Richard , Yu Shaw L. , Zhou Wen Bin , Zhang Hao
Published: June 2011

Xikeng Reservoir is one of the major water supply reservoirs in Shenzhen. The water quality of Xikeng Reservoir has been poor, with much of the pollution coming from nonpoint sources. An innovative low impact development type of BMP called the BioBox was used at the Administration Building parking lot location, as a research site and demonstration project to show how small alterations to parking lot designs can dramatically decrease pollutant loads. Manual samples were collected during storm events and analyzed for total suspended solids (TSS); five-day biochemical oxygen demand (BOD5); ammonia nitrogen (NH3-N), and total phosphorus (TP). In summary, the ranges of removal rates of the BioBox are: TSS 70% - 90%; BOD5 20% - 50%, and ammonia and phosphorus 30% - 70%. The BioBox system effectively reduced the concentrations of pollutants in the parking lot runoff.
Evaluation of Shallow Groundwater Quantity in Harbin by Numerical Modeling
Authors: Dai Chang Lei , Li Zhi Jun , Du Shao Min , Liu Chun He
Published: June 2011

In order to complete the geological survey of Harbin, it is necessary to understand the regime and law of groundwater in Harbin with the method of groundwater numerical modeling which requires the evaluation of groundwater resources quantity as a basic and critical step. Based on the analysis of hydrogeological conditions of the shallow aquifer in Harbin which includes the characteristics of aquifer system structure, boundary conditions, groundwater regime and recharge and discharge, a conceptual hydrogeological model has been built up with GMS (Groundwater Modeling System). With the numerical simulation model transferred by the conceptual model, the total amounts of renewable groundwater resources under different precipitation frequencies have been calculated. The result not only illustrates that the shallow aquifer in Harbin has certain potential in development and utilization but also provides some reference for managing a highly precise groundwater quantity evaluation by groundwater numerical modeling techniques.
Experimental Study on Rubberized Cement-Soil Resistance to Chlorine-Ion Permeation
Authors: Wang Feng Chi , Li Qing Bing , Li Peng Fei
Published: June 2011

Mixing abandoned tyre rubberized powder as filler into cement-soil to form rubberized cement-soil can improve physical mechanical properties of cement-soil. By the methods of natural immersion and chemical titration, the rubberized cement-soil resistance to chlorine-ion permeation was tested and measured. With rubber content increasing, the chlorine-ion content and the apparent diffusion coefficient gradually reduces. The effects of large rubber particle size are better than that of the small. The soluble chlorine-ion content decreases with the erosion depth increasing. In the same depth, as erosion solution concentration increases, the apparent diffusion coefficient increases manyfold. It deduces that rubberized cement-soil resistance to chlorine-ion permeation is superior to common cement-soil.
Inhibition of Population Growth in the Copepod Calanus sinicus during Diatom Bloom
Authors: Li Jie , Liang Yan Juan , Zhang Guo Wei , Liu Ze Hao
Published: June 2011

Field evidence is presented showing that egg production rate and hatching success in the copepod Calanus sinicus were greatly modified during a major late-winter diatom blooms in the Jiaozhou Bay (Yellow Sea). The diatom species composition in this period had shifted to a dominance of Skeletonema costatum and Thalassiosira sp, and comprised about 65% of phytoplankton population among all six sampling stations. Calanus sinicus were examined to determine the effects of the diatom bloom on reproduction and recruitment. The results of egg production rate and hatching success were significantly decreased with the increase of chlorophyll a concentration, indicating that diatom bloom induced negative effect on the copepods population recruitment.
Classification of Area Flowing Based on KRNN Method
Authors: Sun Xiang
Published: June 2011

It is hard to search the influence variables and to classify the flowing areas of graduate employment due to the complex factor inputs. Recently the neural network method has been successfully employed to solve the problem. However the classification result is not ideal due to the nonlinearity and noise. In this work, by combining Recurrent Neural Network (RNN) with Kernel Principal Component Analysis (KPCA), a KRNN model is presented, based on which, the flowing areas of graduate employment is tried to be classified, and the complex factor problem has been well dealt with. In the model, RNN with Kernel Principal Component Analysis (KPCA) and Principal Component Analysis (PCA) as the feature extraction is introduced in as comparison. And then by an empirical study with actual data, it is shown that the proposed methods can both achieve good classification performance comparing with NN method. And the Kernel Principal Component Analysis method performs better than the Principal Component Analysis method.
Warehouse Management System Applicable to Small and Medium Retailer Enterprises
Authors: Wu Yun Na , Luo Wei , Ba Xi
Published: June 2011

Warehouse management is an extremely elementary and important part of logistics management, its effect would affect the cost of logistics immediately, and thereby it would influence an enterprise’s operation performance as a whole. Taking advantage of information technology to realize warehouse management could increase managing efficiency and record precision and improve economic performance.The article concludes all kinds of functional requirements in warehouse management, like inquiry and retrieval, and then abstract out the general pattern of warehouse management systems and design the system.
Approach of Customer Requirement Decomposition Based on Requirement Element in Product Configuration Design and its Application
Authors: Yuan Chang Feng , Wang Wan Lei , Shen Li Xin
Published: June 2011

Accurate acquisition for customer’s requirements is the base and key in product configuration design. However, original customer’s requirements must be decomposed in order to comprehend truly and apply them to guide product configuration design, because they are usually some fuzzy, general even contradictory customized demands. In the paper, two concepts are introduced for customer’s requirement decomposition. One is the requirement element, and the other is the granularity of requirement element. Moreover, the controlling principle for granularity of requirement element is given and the method of requirement decomposition is proposed. This method means semantic segmentation, semantic translation, supplement or subdivision of human-machine-environment and semantic combination. Customer’s abstract demands could be effectively decomposed into some specific requirement elements according to the proposed method of requirement decomposition as well as by controlling the granularity of requirement element reasonably. Finally, the customized design of a money-binding machine is taken as an example to validate the effectivity of proposed method.
Study on Threshold Detection of Micro-Seismic Signal Based on Constraint Judgment
Authors: Ji Chang Peng , Gao Mo , Yang Jie
Published: June 2011

Double threshold detection based on constraint judgment is proposed for micro-seismic signal detection. The improvement effect on Probability of False Alarm and influence on Probability of Detection are quantitatively analyzed with constraint judgment. The mathematical models of total PFA and PD of double threshold detection based on constraint judgment are built, and the validity of the mathematical model is verified by simulation tests and experiments. The results show that the signal-to-noise ratio under scheduled PFA and PD Call be decreased by introducing constraint judgment to double threshold detection, and improve the identification accuracy of micro-seismic signal.
Decolorization of Methyl Orange Simulated Wastewater by Chlorine Dioxide with Ultrasound
Authors: Huang Li Jie , Xu Ting , Wang Shuang Fei
Published: June 2011

Experiments were conducted to investigate the decolorization of methyl orange simulated wastewater in order to assess the effectiveness and feasibility of ultrasound(US) enhanced high-purity chlorine dioxide(ClO2) oxidation process. The results showed that in ClO2/US system the decolorization rate of methyl orange was up to 96%, which was increased by 8% as compared to ClO2treatment alone. The decolorization of methyl orange with/without ultrasonic irradiation follows apparent pseudo-first-order reaction kinetics. The apparent pseudo-first-order rate constant kappwas 0.19min-1in the ClO2/US system, which was a little higher than 0.13min-1of rate constant achieved in ClO2treatment alone. It shows that ClO2/US system can be an effective technology for the decolorization of azo dyes in wastewater.
Comprehensive Assessment System for Resource and Environmental Attribution in Manufacturing Process Chains
Authors: Zhang Hua , Wang Yan Hong , Yue Wen Hui , Jiang Zhi Gang , Zhao Gang
Published: June 2011

In order to assess the condition of the resource consumption and environmental emission in manufacturing process chains, .this study has proposed a method to assess their attributions from the viewpoint of green manufacturing, and has developed a comprehensive assessment system based on it. The results generated from the system can be used to diagnose the key factors producting the excessive resource consumption and environmental emission, and to assist technologist to optimize and improve on the green-orientation.
A Study on the Relationship between Crown Characteristics, Fractal Dimension and Water Consumption of Poplars
Authors: Chen An Qiang , Liu Gang Cai , Zhang Dan
Published: June 2011

The relationships among crown characteristics, crown fractal dimensions and water consumption were studied in seven 5-year-old poplar clones that were selected from the nursery garden of the Gaomi Forestry Bureau in China. The closest positive correlation was between single tree leaf area (TLA) and water consumption followed by the tree crown area (TCA). The leaf area index (LAI) and crown layer density (CLD) were positively correlated with water consumption but were not significantly correlated. There was a negative correlation between the crown shape ratio (CSR) of the L35, NL895 and I-107 poplars and water consumption. The CSR of the other clones was positively correlated with water consumption. But neither the positive nor negative correlations of CSR with water consumptions were significant. The crown characteristics of the fractal dimension had a similar variation trend. The fractal dimension had a significant positive correlation with TLA, LAI and CLD but no significant correlation with CSR and TCA. The fractal dimension of TCA (FDa) and the fractal dimension of crown volume (FDv) had a significant positive correlation with water consumption, and FDa was more closely correlated with water consumption than FDv. More fractal dimension resulted in more water consumption. Correlation analysis indicated that the presence of more foliage distributed in the crown surface or the more evenly distributed foliage in the inner crown resulted in more water consumption with the same leaf area.
Medium Optimisation for Improved Growth-Rate Inhibition of Microcystis Aeruginosa Exposed to AgBiO3 Using Response-Surface Methodology
Authors: Yu Xiao Juan , Zhou Jiang Ya , Wang Zhi Ping , An Yang , Cai Wei Min
Published: June 2011

Blooms of the Microcystis aeruginosa in water have been a long-standing problem for water quality and a human-health issue. Public concern for the inhibition of Microcystis aeruginosa has become increasingly urgent. AgBiO3 is an algaecide having good inhibitory effects on the growth of Microcystis aeruginosa with hydroxyl radicals generated by photocatalyst. The inhibition of Microcystis aeruginosa exposed to AgBiO3 was optimised using statistically-based experimental designs. The four variables, namely, ZnSO4, CaCl2, CuSO4 and NaNO3, were screened as significant effects and were further optimised to determine the optimum levels and their interactions. The optimal concentrations of variables for maximum inhibition were 0.24 mg/L ZnSO4, 125.94 mg/L CaCl2, 0.28 mg/L CuSO4 and 600 mg/L NaNO3. The maximum inhibition rate predicted by the model was 61.86%, in near-perfect agreement with the experimental value (60.07%), and significantly better than unoptimised medium (42.79%).
Fluorescence Polarization Immunoassay in the Detection of Brucella
Authors: Li Peng , Geng Tao , Wu Hai Bin
Published: June 2011

Brucellosis is a disease which is caused by Brucella .The virus can make human and livestock sick. Its transmission of wide range is easy to occur and it is large harm to human and livestock. In this paper, based on fluorescence polarization immunoassay method, a experimental system is designed. The system consists of optical, circuit components. In order to improve the sensitivity of the system, Photomultiplier tube is used as detector. A number of experiments carried out. The result shows that the design is flexible, stable which can be used widely.
The Thermal Induced Temperature and Stress Damage
Authors: Li Ai Fei , Luo Si Hai , Gui Yue
Published: June 2011

During the Canister Retrieval Test (CRT), the temperature around the deposition hole DD0092G01 was elevated and the stress in the rock was consequently increased. This report concerns the study to investigate if the increased stress around the deposition hole has led to micro fracturing in the surrounding rock and if the temperature and possible heat induced damage can be predicted by numerical simulation.The temperature field from thermal analysis generally matches the measured results well, whereas the calculated temperature is much higher than measured.The damage analysis might be a quite reasonable simplification for the area near the middle height of the hole. For the other part, the influence due to tunnel excavation or the end effect should have more important influence.