摘要：
In this paper, A class of third-order nonlinear neutral damped functional differential equations with distributed deviating arguments are studied. By using a generalized Riccati transformation and Kamenev-type or Philos-type integral averaging technique,we establish some new sufficient conditions which insure that any solution of this equation oscillates or converges to zero.
作者机构：
[Xu, Yuming; Zhao, Huihuang] Hengyang Normal Univ, Dept Comp, Hengyang 421002, Peoples R China.;[Zhao, Huihuang] Xidian Univ Technol, Sch Mechano Elect Engn, Xian 710071, Peoples R China.;[Zhou, Dejian] Guangxi Univ Technol, Dept Mech Engn, Liuzhou 545006, Peoples R China.
通讯机构：
[Zhao, Huihuang] H;Hengyang Normal Univ, Dept Comp, Hengyang 421002, Peoples R China.
会议名称：
2nd International Conference on Manufacturing Science and Engineering
会议时间：
APR 09-11, 2011
会议地点：
Guilin, PEOPLES R CHINA
会议主办单位：
[Zhao, Huihuang;Xu, Yuming] Hengyang Normal Univ, Dept Comp, Hengyang 421002, Peoples R China.^[Zhao, Huihuang] Xidian Univ Technol, Sch Mechano Elect Engn, Xian 710071, Peoples R China.^[Zhou, Dejian] Guangxi Univ Technol, Dept Mech Engn, Liuzhou 545006, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Character segmentation;Contour feature;Image processing;Surface mount technology
摘要：
The principles of the Surface Mount Technology (SMT) product character segmentation and its technology could be described as following: SMT product character image is obtained by image sampling equipment and its ideal binary images is got after image processing. In order to segment the SMT product character effectively, a novel character segmentation algorithm is proposed based on contour feature. Three kinds of information are extracted, one is the up contour feature, another is the under contour feature, the third is the width and the height of the image. Then the position of character segmentation is determined according to the width and height of single character, and character segmentation can be accomplish according to its up contour feature and under contour feature. By analyzing the test result, the proposed approach has excellent properties in character segmentation.
作者机构：
Department of Economics and LawHengyang Normal UniversityHengyang,Hunan P.R. China;Department of Economics and Law Hengyang Normal University Hengyang,Hunan P.R. China
会议名称：
2011 International Conference on Business Management and Electronic Information(2011商业管理与电子信息国际学术会议 BMEI2011)
会议时间：
2011-05-13
会议地点：
广州
会议论文集名称：
2011 International Conference on Business Management and Electronic Information(2011商业管理与电子信息国际学术会议 BMEI2011)论文集
摘要：
For the popularizing of the negotiation application in E-commerce a practical many-many bargaining mechanism is to be studied and designed. The function�√ criteria and information carrier of agent have been analyzed and specified in the negotiation. A set of rules based on fair exchange protocol, especially the sealed bidding mechanism, have been proposed,which guarantee the Justice and efficiency in negotiation.. Keywords-e-commerce; many-many bargaining; synchronous negotiation; negotiation protocol; dynamic strategy
摘要：
Although widely applied in many industries, anionic surfactants (AS) have been shown to contaminate the natural environment. Therefore, the detection of trace amounts of AS in environmental samples is of great interest. Here, we report a novel fluorescence quenching method for the determination of trace AS, specifically, sodium dodecyl sulfate (SDS), using 1-(5-naphthol-7-sulfonic acid) -3-(4-pheny-lazophenyl)-triazene (NASAPAPT). Under optimum conditions, the degree of fluorescence quenching is linearly proportional to the concentration of SDS from 2.08×10-8 to 8.67×10-7mol L-1 with a detection limit of 8.35×10-9mol L-1. The proposed method exhibits high sensitivity and selectivity, yet it avoids the use of toxic organic solvents and tedious solvent extraction procedures. It has been applied to the determination of trace SDS in both natural water and industrial samples with recoveries between 99.04 and 103.58%. Results indicated that the hydrogen bonds formed between NASAPAPT and SDS played an important role in the detection process and that the π→π* transition was crucial for fluorescence of the NASAPAPT complex.
