作者机构：
Network Center,Hunan City University Hunan City University Yiyang, P.R .China;Architecture and Urban Planning School,Hunan City University Hunan City University Yiyang, P.R .Chin
会议名称：
The 2010 International Conference on Computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)
会议时间：
2010-10-22
会议地点：
太原
会议论文集名称：
The 2010 International Conference on Computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)论文集
摘要：
The security of a recently proposed ID-based authenticated key agreement protocol was analyzed, and an enhanced ID-based authenticated key agreement protocol is presented based on the previous work, a malicious PKG (private key generator) can still obtain all of the agreed session keys, that is, it doesn't provide PKG-forward secrecy in escrowless mode.Aiming at the security flaws of an existing Idbased key agreement Protocol and a key agreement Protocol for multi-trustdomain proposed based on the new variant mode of ID-Base public key infrastrueture(PKI), an improved scheme is proposed.The new scheme can avoid excessive power of KGC to make up the security flaws in the original protocols, which has a higher level of security.The new schemes have many properties such as equal contribution; non-key control; against man-in-middle attack; etc.
会议名称：
2009 Second International Conference on Intelligent Computation Technology and Automation(2009 第二届IEEE智能计算与自动化国际会议 ICICTA 2009)
会议时间：
2009-10-10
会议地点：
长沙
会议论文集名称：
2009 Second International Conference on Intelligent Computation Technology and Automation(2009 第二届IEEE智能计算与自动化国际会议 ICICTA 2009)论文集
关键词：
urban public transportation;Ecological Niche marginal distance (ENMD);passenger trip cost
摘要：
In the system of urban public transportation, the primary contradiction is contest with service object between convention public buses and urban rail transit at present. The analysis of this study is based on the passenger trip cost, and the ecological niche character of convention public buses and urban rail transit are studied. The passenger trip cost function has been formulated and construct the model of urban public transit ecological niche marginal distance (ENMD) base on it. Through the numerical example, the ENMD of convention public buses and urban rail transit has been analysis and meaningful suggestion for the routes set and adjusts of convention public buses have been put forwards.
期刊：
4TH INTERNATIONAL SYMPOSIUM ON LIFETIME ENGINEERING OF CIVIL INFRASTRUCTURE,2009年:665-670
通讯作者：
Cao, Guo-Hui
作者机构：
[Liu, Xiao-Fang; Cao, Guo-Hui; Liu, Xiang-Rong; He, Ran] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Cao, Guo-Hui] H;Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.
会议名称：
The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)
会议时间：
2009-10-26
会议地点：
长沙
会议论文集名称：
The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)论文集
关键词：
Concrete columns;creep;ultimate strength
摘要：
Long-term mechanical properties test for 864 days were completed on three types column, including plain concrete(PC), reinforced concrete(RC) and concrete-filled steel tube(CFST) columns, the creep performance and ultimate strength were tested and analyzed. Creep test results show that reinforcement can significantly reduce the creep deformation of concrete columns. The creep coefficient of steel pipe surface is larger than that of inner concrete for CFST columns, it would last a long time for the creep of inner concrete to achieve stability. The ultimate strength test results show that loading age and reinforcement have great effect on extreme compression strain and ultimate strength of PC columns and RC columns. Whether it has loading course would influence the stress redistribution of CFST columns, the stress redistribution effect is relatively small for columns having loading course. However, whether it has loading course, the creep effect on the ultimate strength of CFST columns is very small.
摘要：
According to the retaining wall that reinforced by extensible reinforcements such as geogrids and geotcxtiles, a new slice analysis methodology was developed to analyze its internal stability under horizontal and vertical seismic loads. The slide failure wedge of the reinforced retaning wall was divided into a number of soil slices parrallel to the reinforcements. Based on the single line shape assumption for the critical slip surface of the wall, the equilibrium equations for horizontal forces, vertical forces and moments of each soil slice were established. And then, the recurrence formulas for horizontal and vertical inter-slice forces, reinforcement tensile forces were derived consequently, in which the relationship between the inter-slice forces and the safety factor FS of the wall was included. The safety factor FS and the vertical bearing capacity qmat at the wall top were obtained by solving those recurrence formulas. This proposed slice method was applied to analyze the seismic stability of two reinforced retaining walls whose height was 5m and 10m respectively, and the results were compared with those of some conventional approaches such as strength reduction method and FLAC3D. The results show that: this method is simple, practical and good precision in calculation, so it can be used in actual seismic stability design of reinforced walls; the simplifed criteal slip surface is more feasible and convenient for engineering application than the log-spiral failure surface.
期刊：
2009 INTERNATIONAL CONFERENCE ON INFORMATION MANAGEMENT, INNOVATION MANAGEMENT AND INDUSTRIAL ENGINEERING, VOL 3, PROCEEDINGS,2009年:185-188
通讯作者：
Zhang Chengping
作者机构：
[Zhang Chengping; Zhang Dingli; Zhang Sulei] Beijing Jiaotong Univ, Minist Educ, Tunnel & Underground Engn Res Ctr, Beijing 100044, Peoples R China.;[Li Limin] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Zhang Chengping] B;Beijing Jiaotong Univ, Minist Educ, Tunnel & Underground Engn Res Ctr, Beijing 100044, Peoples R China.
会议名称：
International Conference on Information Management, Innovation Management and Industrial Engineering (ICIII 2009)
会议时间：
2009-01-01
会议地点：
Xi'an, China
会议论文集名称：
2009 International Conference on Information Management, Innovation Management and Industrial Engineering (ICIII 2009). [v.3]
关键词：
Metro construction;Safety accident;Accident-characteristic;Risk management;Accident countermeasures
摘要：
Due to the special geological conditions and the surrounding environmental conditions, the urban metro constructions are faced with greater technical difficulty and higher safety risk, which cause many kinds of safety accidents. Taking Beijing metro as the background, the characteristics of the metro project and the main safety risks have been analyzed, and a statistical analysis of accident cases caused by Beijing metro construction has also been made. According to the inducements, the accidents will be divided into 5 categories: accidents caused by pipeline leakage or rupture, bad geology-induced accidents, overmuch deformation of strata-induced accidents, management defects and unexpected accidents, of which management defects are the biggest contributor, and the most serious accidents are caused by pipeline leakage or rupture and bad geology. At last, combined with typical cases, the characteristics and dangers of accidents caused by pipeline rupture and unfavorable geology are analyzed. In addition, countermeasures to prevent and control accidents are proposed.
摘要：
A multirate method with general parameter filter banks for beamforming with constant beamwidth based on harmonic nested array is proposed. The harmonic nested array is composed of several uniformly-spaced linear subarrays, each of which processes an octave subband signal respectively. These nonuniform subband signals are implemented by general parameter filter banks. Each subarray beamforming is carried out by space-frequency signal processing approach, and the number of weights of each subarray is determined by the total frequency bandwidth of its entire subbands correspondingly. This processing architecture based beamformer splits the wideband signal into several narrow subband ones which are processed in parallel, and each subarray is operating with the lowest rate, which contributes to decreasing the computational load significantly and improving the speed and performances as well. Simulations show that the proposed beamformer is competent for constant beamwidth beamforming with much lower computation complexity.
作者机构：
Wuhan University of Technology, Wuhan, P.R. China, 430070;Hunan City University, Yiyang, P.R. Chin
会议名称：
第十三届世界湖泊大会
会议时间：
2009-11-01
会议地点：
武汉
会议论文集名称：
第十三届世界湖泊大会论文集
关键词：
Biological Remediation;Eutrophication;Lake and reservoir;influencing factor
摘要：
It is shown that the eutrophication of lakes and reservoirs has been very serious in China according to the data of recent years,and the level of eutrophication is deteriorating,which affects the fuictions of water body seriously,decreases the use value,destroys the ecological balance,and endangers human health.The formation causes of eutrophication are analyzed based on the influencing factors,such as nutrient,dissolved oxygen,temperature,light,hydrodynamics and bottom mud etc.,respectively.In accordance with the restoration objectives of water body eutrophication,the aquatic plant remediation techniques,the microorganism remediation techniques and the aquatic animal remediation techniques are discussed in detail.Their treatment mechanism,process characteristics,existing problems and the solving measures are put forward.
作者机构：
Department of Computer Science and Technology, Hunan City University, Yiyang, Hunan, China
会议名称：
IET International Communication Conference on Wireless Mobile and Computing (CCWMC 2009)
会议时间：
7-9 Dec. 2009
会议地点：
Shanghai, China
会议论文集名称：
IET International Communication Conference on Wireless Mobile and Computing (CCWMC 2009)
关键词：
wireless sensor network;DAG scheduling;PSO algorithm;schedule length;level of energy consumption;level of balanced use of energy
摘要：
In order to increase the lifetime of entire wireless sensor network, the task scheduling in the network demands to achieve as far as possible the shortest task completion time, the lowest level of energy consumption and the highest level of balanced use of energy under condition of limitation in energy of nodes. Therefore, traditional multiprocessor Directed Acyclic Graph (DAG) scheduling algorith...
摘要：
In the process of cantilever construction of the Longtan River Bridge ,the WZP-035 thermally sensitive electric resistence, as measured points of temperature, was buried into two segments of box-girder,and the temperature field of box-girder concrete was observed for three days. The observation shows that the temperature distribution of concrete box along the height of box-girder is non-linear under solar radiation. The tested temperature and the temperature difference are given a regression analysis using the least square method. Concrete box-girder temperature mode in the sunshine, suited to the western Hubei Province, is proposed.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,2009年7496 ISSN：0277-786X
通讯作者：
Li, C.
作者机构：
[Guo, Baoyun; Li, Cailin; Wang, Qiang] School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;[Wang, Qiang] City Construction Academy, Hunan City University, 4 Chaoyang Road, Yiyang 413000, China
通讯机构：
School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, China
会议论文集名称：
MIPPR 2009: Pattern Recognition and Computer Vision
关键词：
3D reconstruction;Contour line;Microminiature solid of revolution;Outline feature extraction
摘要：
A new 3D automatic reconstruction method of micro solid of revolution is presented in this paper. In the implementation procedure of this method, image sequence of the solid of revolution of 360° is obtained, which rotation speed is controlled by motor precisely, in the rotate photographic mode of back light. Firstly, we need calibrate the height of turntable, the size of pixel and rotation axis of turntable. Then according to the calibration result of rotation axis, the height of turntable, rotation angle and the pixel size, the contour points of each image can be transformed into 3D points in the reference coordinate system to generate the point cloud model. Finally, the surface geometrical model of solid of revolution is obtained by using the relationship of two adjacent contours. Experimental results on real images are presented, which demonstrate the effectiveness of the Approach.
会议名称：
2009 Second International Conference on Intelligent Computation Technology and Automation(2009 第二届IEEE智能计算与自动化国际会议 ICICTA 2009)
会议时间：
2009-10-10
会议地点：
长沙
会议论文集名称：
2009 Second International Conference on Intelligent Computation Technology and Automation(2009 第二届IEEE智能计算与自动化国际会议 ICICTA 2009)论文集
关键词：
Logistics;Logistics Park;Fuzzy Clustering
摘要：
Currently, with the galloping development of logistics in our country, a great number of logistics parks are being built somewhere. However, many of them lack a general layout planning. In this paper is first analyzed the principles of layout planning of regional logistics park and is put forward the layout planning method of logistics park in combination with fuzzy clustering theory. On its basis and at the end, preliminary analysis is performed for the issue-general layout of Hunan provincial logistics park and feasibility of the method provided is verified in this paper.
作者机构：
School of Resources an Safety Engineering,Central South University,Changsha 410083,P. R. China;School of Civil Engineering,Hunan City University,Yiyang 413000,P. R. China
会议名称：
The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)
会议时间：
2009-10-26
会议地点：
长沙
会议论文集名称：
The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)论文集
摘要：
Propagation of a crack in engineering materials including rocks can cause failure. Knowledge of the stress state under which a crack can propagate, and the trajectory it may follow during its growth are thus very important for stability of rock masses/materials and for safe design of structures in rocks and ceramics. In this paper, the surface’ effective shear stress of closed-crack was introduced into calculating the stress intensity factor (SIF). The value of SIF was calculated when cracks were in different length, different angle and different friction coefficient. Introducing τrθ iso-line, the effective shear stress criterion is developed: (1) the crack grows up along the direction in which the sum of twin shear stress reached minimum on τrθ iso-line; (2) the crack begin to grow when the crack tip stress intensity factor KII arrived at critical value KIIC. Accordingly, the proposed criterion successfully predicts critical cracking angle θc of closed-crack. Compared with other criteria in predicting initiation angles θc, it shows that the effective shear stress criterion is accurate and secure in predicting closed-crack’ fracture.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,2009年7495 ISSN：0277-786X
通讯作者：
Wang, Q.
作者机构：
[Wang, Qiang; Li, Cailin; Hu, Hualiang] School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;[Ji, Peihuan] Information Center of China Three Gorges Project Corporation, 1 Jianshe Road, Xiba, Yichang 443002, China;[Wang, Qiang] City Construction Academy, Hunan City University, 4 Chaoyang Road, Yiyang 413000, China
通讯机构：
School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, China
会议名称：
MIPPR 2009: Automatic Target Recognition and Image Analysis
会议时间：
Yichang, China
会议论文集名称：
MIPPR 2009: Automatic Target Recognition and Image Analysis
摘要：
This paper presented an automatic panorama generation and free roaming algorithm for the tedious previous approaches on panorama generation and limitations of single-viewpoint roaming. Firstly, it describes the single-viewpoint panorama generation method: detecting the image point features in SIFT operator, getting the robust homography estimation in RANSAC and stitching the panoramic images by multi-band blending. Secondly, we present the free roaming method. In this method the corresponding pixels in new-viewpoint image can be set from the original images matching points and the new-viewpoint image can be blended by corresponding TIN piece rendering at last. Experimental results show that it is practicable and meets the actual requirements.
