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Organizing of Virtual Enterprise for Customized Artificial Joint and sch.duling of Manufacturing Resources Based on Manufacturing Grid

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Journal of Donghua University(eng.ish Edition) 2005年第5期22卷 12-15页

作者： Deng.Hong CHEN Li 王成焘 Deng.Qian-qi sch. of Mech. and Pow. eng. Shanghai Jiao Tong Univ. Shanghai200030 Dept. of Comp. Sci. and eng. Shanghai Jiao Tong Univ. Shanghai200030

In order to improve efficiency of developing customized artificial joint, a virtual enterprise is organized based on the manufacturing grid. The application-oriented framework of the virtual enterprise is created for organization of the virtual enterprise. The manufacturing system of the virtual enterprise is built up based on the exterior grid and manufacturing subsystems of member enterprises are set up based on the interior grid. Furthermore, according to characteristic matching of manufacturing resources, the sch.duling flow is studied in detail and the related sch.duling strategies are established. The sch.duling procedure is divided into distributed sch.duling stage and local sch.duling *** on the manufacturing grid, the organization of the virtual enterprise for customized artificial joint and the corresponding sch.duling strategies can be utilized to shorten developing cycle and reduce produce cost.

关键词： customized artificial joint virtual enterprise manufacturing grid characteristic matching

Methane emission in a rice field of Thailand

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Journal of Environmental Sciences 1996年第1期8卷 38-47页

作者： Rong Xiang Chuen-How Ng (Environmental eng.neering Program, sch.ol of Environment,Resources and Development,Asian Institute of Technology, Bangkok 10501,Thailand)Su Weihan(Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences,Beijin Envmtl eng.Program Sch of Envmt Asian Inst of Technology Bangkok 10501 Thailand

In this study, emission of methane have been measured in a Thai rice field. Clear patterns of diurnal variations of methane emission have been observed and were found to follow the diurnal variation of the soil temperature. A detailed explanation was given for explaining the occurrence of a methane emission peak at *** effects of urea fertilization and field draining on methane emissions were discussed. Methane emission from Thai rice fields is estimated to be 3. 32 Tg CH_4(2. 49 Tg CH_4-C) each year , contributing about 3. 4% to global methane budget due to rice cultivation.

关键词： methane emission rice field greenhouse gas.

Mathematical Modeling and Simulation of Pressurizer Pressure Control System

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Mathematical Modeling and Simulation of Pressurizer Pressure...

Transient Exergy Analysis of the Condenser and Evaporator of an Air Source Heat Pump Water Heater

2012年计算机应用与系统建模国际会议

作者： Ma Jin Chan Afang Lv Lixia sch.ol of Energy and Power eng.neering Xi'an Jiao tong university North China Electric Power University Sch. of Control & Comput. Eng. Baoding Sinosimu Technology Co.Ltd

The data of pressurizer dynamic characteristics was obtained by the test on simulator. The test included disturbances of spray valve and electric heater power. The transfer function of the pressurizer pressure was established upon the data. The control system was simulated by the use of Simulink simulation package. The simulation result shows that the pressurizer model and its pressure control system are correct and have the reasonable dynamic trend. The pressurizer model can be used on other research.

关键词： Pressurizer Pressure control system Transfer function Simulation

来源： cnki会议评论

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cnki会议

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Journal of Mechanics eng.neering and Automation 2016年第7期6卷 339-347页

作者： Mehmet Mete Ozturk L. Berrin Erbay Transportation Vocational sch. Anadolu University Eskisehir Turkey sch.ol of eng.and Arch. Eskt'sehir Osmangazi University 26480 Ban Meselik Eskisehir Turkey

In this study the performance of an ASHPWH （air source heat pump water heater） is assessed from exergy point of view in component wise. In order to investigate the work potential of energy, the destruction on the exergy is analyzed and results are summarized for the components individually. The exergy destruction of the system is studied by considering real paths of the pressure and temperature data which are collected during the experiments of the ASHPWH under varying environmental conditions. In the following step, the evolution of the exergy destruction of the system is calculated by a code which is compiled on MATLAB along these temperature and pressure paths. The obtained results reveal the importance of the transient exergy analysis by providing detailed information about exergy destruction of the system such as where it drives up and reaches up to its max and where it drops down and evolves on a smooth path.

关键词： Transient exergy analysis heat pump condenser evaporator.

不同注量率对光化性角化病进行光动力学治疗:对光漂白作用、疼痛和初次治疗结果进行评估

维普期刊数据库评论

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维普期刊数据库

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世界核心医学期刊文摘（皮肤病学分册） 2005年第5期1卷 14-15页

作者： Ericson M.B. Sandberg C. Stenquist B. 牛新武 Department of Experi mental Physics Sch. of Phys. and Eng. Physics Gteborg oteborg University SE-412 96 Gweden

Background:Although photodynamic therapy (PDT) is becoming an important treat ment method for skin lesions such as actinic keratosis (AK) and superficial basa l cell carcinoma, there are still discussions about which fluence rate and light dose are preferable. Recent studies in rodents have shown that a low fluence ra te is preferable due to depletion of oxygen at high fluence rates. However, thes e results have not yet been verified in humans. Objectives:The objective was to investigate the impact of fluence rate and spectral range on primary treatment outcome and bleaching rate in AK using aminolaevulinic acid PDT. In addition, th e pain experienced by the patients has been monitored during treatment. Patients/methods Thirty-seven patients (mean age 71 years) with AK located on the head, neck and upper chest were treated with PD T, randomly allocated to four groups:two groups with narrow filter (580-650 nm )and fluence ratesof30or45mWcm-2, and two groups with broad filter (580-690 nm ) and fluence rates of 50 or 75 mW cm-2. The total cumulative light dose was 10 0 J cm-2 in all treatments. Photobleaching was monitored by fluorescence imagin g, and pain experienced by the patients was registered by using a visual analogu e scale graded from 0 (no pain) to 10 (unbearable pain). The primary treatment o utcome was evaluated at a follow-up visit after 7 weeks. Results:Our data show ed a significant correlation between fluence rate and initial treatment outcome, where lower fluence rate resulted in favourable treatment response. Moreover, t he photo-bleaching dose (1/e) was found to be related to fluence rate, ranging from 4.5 ±1.0Jcm-2at30mWcm-2,to7.3 ±0.7 J cm-2 at 75 mW cm-2, indicating h igher oxygen levels in tissue at lower fluence rates. After a cumulative light d ose of 40 J cm-2 no further photobleaching took place, implying that higher dos es are excessive. No significant difference in pain experienced by the patients during PDT was observed in varying the flu

关键词：光动力学治疗光化性角化病注量率初次治疗光漂白荧光成像氨基乙酰丙酸滤光器光敏疗法光剂量

Authenticating QoS-Guaranteed Multicast Route Discovery for Ad hoc Networks

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China Communications 2007年第1期4卷 48-55页

作者： Mingxi, Yang Layuan, Li Yiwei, Fang Wuhan Univ Technol Sch Comp Sci & Tech Wuhan 430070 Peoples R China Huazhong Univ Sci & Technol Dept Elect & Inf Eng Wuhan 430074 Peoples R China

This paper presents SEQMRAN,a novel secure efficient QoS multicast route discovery protocol for mobile ad hoc *** protocol relies entirely on one-time signature mechanism,HORSEI,with very efficient signing and verifying,and we do this by improving the HORSE protocol through the introduction of intermediate hash *** main purpose of SEQMRAN is to provide source authentication for QoS multicast routing discovery messages in MANET by constructing multicast tree with QoS and authentication constrains in mobile ad hoc *** performance measure of SEQMRAN is evaluated using network simulator *** results represent that SEQMRAN produces less end-to -end packet latency than RSA public key encryption based secure routing schem.,and it is a feasible approach to securing multicast routing with multiple QoS constrains for mobile ad hoc networks.

关键词： ad hoc maodv QoS security route

Study on the Accounting Model of Ecological Environment

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Ecological Economy 2005年第4期1卷 18-22页

作者： Liu Ying Zhao Zicheng.Liu Dan Liao Yong College of Environmental Science ＆ eng.neering. Southwest Jiaotong University. Cheng.u 610031 P R. China College of Resources ＆ Environmental Science Chongqing Uniiversity Chongqing 400044 P. R. China sch.ol of Computer sch.＆ eng University of Electronic Science ＆ Technology of China. Chengdu 610054 P R China

This paper explains environmental problems from the point of ecunomy. Referring to the “System of Integrated Environmental and Economicat Accounting”（SEEA） promulgated by United Nations in 1993. the authors have setup a model of environmental and economic accounting after the discussion and modification of the concepts of prodoction, assets, and environmental costs. Taking ecological environment of Chongqing as an example, the envirunmental and economic analyses is done. The nesults of the model reflect .sustainabitity of ecologieal environment and environmental costs directly or indirectly in macro-economy.

关键词： environmentol economy accounting ecologicat environment