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Research on heart sound identification technology

Science china(Information sciences) 2012年第2期55卷 281-292页

作者： CHENG XieFeng1,3,MA Yong2,LIU Chen1,ZHANG XueJun1 & GUO YuFeng11school of Electronic Science and Engineering,Nanjing university of Posts and Telecommunications,Nanjing 210003,china 2school of Computer Science and Technology,Nanjing university of Science and Technology,Nanjing 210094,china 3Key Lab of Broudbard Wireless Communication and Sensor Network Technology(Nanjing university of Posts and Telecommunications),Ministry of Education,Nanjing 210094,china 1. school of Electronic Science and Engineering Nanjing University of Posts and Telecommunications Nanjing 210003 China3. Ministry of Education Key Lab of Broudbard Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Nanjing 210094 China2. School of Computer Science and Technology Nanjing University of Science and Technology Nanjing 210094 China

In this article,both the basic principles and the experimental methods of identity recognition technology based on heart sounds are ***,the characteristics of heart sounds and the feasibility of heart sounds as a biometric were analyzed.A synthetic model of heart sounds was then developed based on a family of wavelets;Finally,the characteristic parameters of heart sounds were extracted by using the heart sounds linear band frequency cepstra(HS-LBFC)with a specified configuration,and the similarity distance was adopted for heart sound *** highlight the difference in two heart sound signals between the time and frequency domains,a construction method of the heart sound wavelet,a calculation method of the parameters of a synthetic model,selection of the characteristic parameters of heart sounds and the corresponding data processing technology were *** experimental results showed that the proposed method exhibited excellent performance and practicability.

关键词： biometric wavelet family of heart sounds synthetic model of heart sounds heart sounds linear band frequency cepstra(HS-LBFC)

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STUDY ON MAINTAINING DIAGNOSIS TECHNOLOGY

STUDY ON MAINTAINING DIAGNOSIS TECHNOLOGY

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2005年中国机械工程学会年会

作者： YAOFengjin, YANG Hao, YUANPeng (school of Traffic and Transportation, Beijing Jiaotong university, Beijing, 100044 Military Traffic Institute, tianjin, 300161)

＜正＞The longevity of equipment and accessory is largely up to the user. In new century maintaining diagnosis technology should not only diagnose the fault of equipment, but also prevent the fault of equipment happening and keep current equipment in good state. The paper introduces the development and variance of maintaining diagnosis technology from post accident disposed to former prevention, brings forward the demand and characteristic of maintaining diagnosis technology in new century, adopts equipment state variation curve to analyze faults and causes from the side of normalization, gently abnormity, abnormity and fault state, and from the three orientations of renovating inferior quality, preventing inferior quality and improving throughput to put forward the maintaining diagnosis methods with combination of allopathic and cause therapeutics, retails the guidelines and strategy of three R, three D and three P methods from the angle of task to action, which are real scene and real thing, come reality, direct touch and direct observe come direct recept, and principle and principia come primary origin. And the paper also lodges that maintaining diagnosis technology of equipment should take reasonable using methods into consideration, so as to prolong used longevity and maintain function and performance of current equipment. Hope the paper can provide help to future maintaining diagnosis technology engineering.

关键词： maintaining diagnosis technology vibratory diagnosis equipment state fault

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Application of RFID Technology in Home Appliance Distribution Logistics

Application of RFID Technology in Home Appliance Distributio...

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第十五届工业工程与工程管理国际会议

作者： Yan Bo Fu Haiyan He Yunqian school of Economics and commerce South china university of Technology Guangzhou P.R.china 510006

＜正＞Logistics cost is an important measure for home appliance industry that has been developed to a mature period of renewal life *** to the analysis of practical problems in distribution logistics of traditional home appliance industry,this paper proposes a distribution logistics management program for this industry based on RFID technology. It covers the entire distribution process from final linear to distribution center and to distribution *** paper develops a"visual warehouse management system based on RFID"and a"vehicle monitoring and tracking system"with Visual Basic and Map Objects,and they are used to monitor and track products in distribution center or in transit combined with GPS and *** system can effectively improve management efficiency and quality of home appliance distribution center.

关键词： Radio Frequency Identification(RFID) Home Appliance Distribution Distribution Center

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A NOVEL 3-D MODEL FOR THE WATER CRESTING IN HORIZONTAL WELLS

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Journal of Hydrodynamics 2008年第6期20卷 749-755页

作者： LUO Wan-jing ZHOU Ying-fang WANG Xiao-dong school of Energy Resources China University of Geosciences Beijing 100083 China

In the presence of bottom water, a drop in the reservoir pressure due to fluid production causes the aquifer water to expand and to flow into the reservoir. Therefore, hydrocarbon production from a well is limited by the critical flow rate. The main purpose of this study is to investigate the breakthrough time and the critical rate by using a novel 3-D horizontal well model. Based on the hypothesis that the horizontal well is located in any position of a circular reservoir with no-flow boundary on the top of the reservoir and constant pressure boundary at the bottom, the horizontal well has been regarded as an infinite conductivity line sink and then a 3-D steady-state flow model of the horizontal well is set up. A point sink pressure solution can be obtained with the Fourier transform. The result of the pressure distribution of the uniform flux horizontal well can be presented by means of the principle of superposition. According to the stable water cresting theory, this study confirms the stable height of water cresting and the critical rate. Meanwhile, it can re-confirm the breakthrough time at a specific rate. The output of a comparison between this 3-D model and the reservoir numerical simulator （Eclipse） shows the method presented here can be applied to investigate the behavior of a water cresting and to predict the breakthrough time at the bottom water driver reservoir.

关键词： horizontal well bottom reservoir critical rate breakthrough time 3-D model

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机体的免疫反应是如何被激活的?——2011年诺贝尔生理学或医学奖解读

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生物化学与生物物理进展 2011年第10期38卷 900-907页

作者：奇云李大可淮南联合大学淮南232038 复旦大学生命科学学院生理学和生物物理学系立人实验室上海200433

2011年10月3日，举世瞩目的2011年诺贝尔生理学或医学奖在瑞典卡罗林斯卡医学院揭晓”．因在免疫学领域取得杰出成就，美国科学家布鲁斯·博伊特勒（Bruce ***）、法国科学家朱尔斯·霍夫曼（Jules ***）和加拿大科学家拉尔夫·斯坦曼（... 详细信息

2011年10月3日，举世瞩目的2011年诺贝尔生理学或医学奖在瑞典卡罗林斯卡医学院揭晓”．因在免疫学领域取得杰出成就，美国科学家布鲁斯·博伊特勒（Bruce ***）、法国科学家朱尔斯·霍夫曼（Jules ***）和加拿大科学家拉尔夫·斯坦曼（Ralph ***），共同分享了这一奖项．

关键词：诺贝尔生理学或医学奖免疫反应美国科学家激活机体解读免疫学医学院

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油罐整体举升中力与应力经验公式的推导

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天津大学学报（自然科学与工程技术版） 2003年第3期36卷 353-358页

作者：宋安张惠民陈宝珠邓彦吕宝柱司刚强天津大学建筑工程学院天津300072 中石化集团管道储运公司石油机械厂徐州221008

现场实验证明,单点提升力和罐壁受力点的应力状况直接关系到油罐举升的安全.为了解决设计和实施油罐举升方案过程中对提升力及罐壁受力点的应力值进行快捷的科学估算问题,以大量的实测数据和现场经验为基础并结合理论计算,对油罐举升过... 详细信息

现场实验证明,单点提升力和罐壁受力点的应力状况直接关系到油罐举升的安全.为了解决设计和实施油罐举升方案过程中对提升力及罐壁受力点的应力值进行快捷的科学估算问题,以大量的实测数据和现场经验为基础并结合理论计算,对油罐举升过程中力的问题进行了深入的讨论,并对提升力和应力经验公式的推导进行了尝试.在综合修正系数和不均衡系数的求解过程中,尽可能地包容了现场的多种因素.

关键词：油罐举升提升力应力经验公式罐壁受力点综合修正系数不均衡系数

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Involvement of gene expressions in apoptosis of vascularendothelial cells induced by rattlesnake venom

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Cell Research 1999年第3期9卷 237-242页

作者： MIAO JUN YING SATOHIKO ARAKI YI RENHAN HIROSHI HAYASHI(Institute of DeveloPmental Biology, school of Life Sci-ence, Shandong university, Jinan 250100, china)(Sugashima Marine BiolOgical Labomtory, school of Sci-ence, Nagoya university, To6a, Me, 517 Japa 1Institute of Developmental Biology School of Life Science Shandong University Jinan 250100 China 2Sugashima Marine Biological Laboratory School of Science Nagoya University Toba Mie 517 Japan 1Institute of Developmental Biology School of Life Science Shandong University Jinan 250100 China 2Sugashima Marine Biological Laboratory School of Science Nagoya University Toba Mie 517 Japan

Formation of apoptotic bodies is a typical character ofaPoptotic cell death, but how the processes are controlledis not known. In this study, we compared two apoptosisinducing systems in vascular endothelial cells (VEC). Wefound that the formation of aPoptotic bodies during apop-tosis induced by rattlesnake venom, which is an unique andspecific aPoptosis inducer to vascular endotheliaI cells, wasmuch faster than that induced by deprivation of survivalfactors (aFGF and serum). When we blocked the synthesisof mRNAs in cells treated with rattlesnake venom by DRB(5, 6- dichloro- 1 -β- D- rib ofur anosylb enzimidazole ), an in-hibitor of transcription, the formation of aPoptotic bodieswas dramatically inhibited. We examined the expressionof Psa gene and found that its expression was much higherin apoptosis induced by rattlesnake venom than that inaPoptosis induced by deprivation of aFGF and serum. Ourresults suggest that gene expression is important and P53gene may play a major role in inducing the formation ofapoptotic bodies in VEC.

关键词： Apoptosis ratt1esnake venom gene expressions P~53 gene endothelia1 cells

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Solutions of Minimal Period for An Extended Hamiltonian System

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The Journal of china Universities of Posts and Telecommunications 2002年第3期9卷 23-27,37页

作者： LIU Bao-sheng (school of Science, Beijing university of Posts and Telecommunications, Beijing 100876, P.R.china) school of Science Beijing University of Posts and Telecommunications Beijing 100876 P.R.China

Solutions of minimal period for the Hamiltonian system =JH′(x) has been proven under the conditionas H″(x) -1 →0 as |x|→∞ and H(x) is of higher order than 2 in the neighborhood of the origin; In this paper, w... 详细信息

关键词： hamiltonian system morse index minimal period solution

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A symmetric geometric measure and the dynamics of quantum discord

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Chinese Physics B 2013年第4期22卷 94-102页

作者：蒋峰建吕海江闫新虎石名俊 Department of Modern Physics University of Science and Technology of China school of Information Engineering Huangshan University

A symmetric measure of quantum correlation based on the Hilbert–Schmidt distance is presented in this paper. For two-qubit states, we considerably simplify the optimization procedure so that numerical evaluation can be performed efficiently. Analytical expressions for the quantum correlation are attained for some special states. We further investigate the dynamics of quantum correlation of the system qubits in the presence of independent dissipative environments. Several nontrivial aspects are demonstrated. We find that the quantum correlation can increase even if the system state is suffering from dissipative noise. Sudden changes occur, even twice, in the time evolution of quantum correlation. There exists a certain correspondence between the evolution of quantum correlation in the systems and that in the environments, and the quantum correlation in the systems will be transferred into the environments completely and asymptotically.

关键词： quantum correlation geometric measure

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The Preparation and Characterization of Amorphous SiCN Thin Films

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Wuhan university Journal of Natural sciences 2001年第3期6卷 665-669页

作者： Li Jin chai, Lu Xian feng, Zhang Zi hong, Guo Huai xi, Ye Ming sheng school of Physics and Technology, Wuhan university, Wuhan 430072, china Wuhan university School of Physics and Technology Wuhan China (GRID:grid.49470.3e) (ISNI:***)

Radio Frequency plasma enhanced Chemical Vapor Deposition (RF CVD) using N2, SiH4 and C2H4 as the reaction sources was used to prepare amorphous ternary Si x C y N z thin films. The chemical states of the C, Si and N atoms in the films were characterized by X-ray photoelectron spectroscopy (XPS) and Fourier Transform Infrared Spectroscopy (FTIR). The refractive indexn, extinction coefficientk and optical band gapE opt of the thin films were investigated by UV-visible spectrophotometer and spectroscopic ellipsometer. The results show that a complex chemical bonding network rather than a simple mixture of Si3N4, SiC, CN x and a-C etc., may exist in the ternary thin films. Then's of the films are within the range of 1. 90–2. 45, andE opt's of all samples are within the range of 2. 71–2. 86 eV.

关键词： SiCN thin films RF CVD synthesis optical properties X ray photoelectron spectroscopy (XPS) FTIR

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