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2010 Chinese Control and Decision Conference

作者： Feng Li~1 Juanjuan Hu~2 Jian Wang~3 1 2.Transport Management Institute Ministry of Transport of the People’s Republic of china,Beijing,101601 3.china academy of transportation sciences,Beijing 100029,china

Current active transit signal priority(TSP) methods are based on real-time detection of information,often with the green extension and early green to make bus pass through the intersection as soon as *** this paper,according to domestic environment,applying active transit signal priority in artery coordination system,using related transit priority principle and parameter,can not only guarantee to execute transit priority,but also make the impact of transit signal priority on coordination system ***,the active transit signal priority in artery coordination system should consider the intersection with irregular phase,such as overlapping phase to ensure traffic flow smoothly *** this paper provides active transit signal priority algorithm with overlapping phase in artery coordination system(ATSPOP),and this new green decision model including green of overlapping phase,green of priority transit pahse consider green of overlapping phase in early green strategy can keep the same and in green extension strategy can change as flow needs and transit priority *** based on effect of the green extension and early green on general traffic and bus traffic by academic and simulation analysis,using delay of the intersection,this thesis shows the result:ATSPOP can reduce bus delay to transit priority and better than transit signal priroity without considering overlapping phase in the degree of transit priority,and alsocan keep the delay of intersection little ***, ATSPOP in artery progression is effective,which can provide a theoretical foundation and application experience in practice.

关键词： transit signal priority overlapping phase coordination system vehicle delay

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工程项目计划“关键性”问题拓展研究

系统工程与电子技术 2004年第7期26卷 914-917,923页

作者：王仁超欧阳斌王琳褚春超天津大学建筑工程学院天津300072

工程项目计划中传统“关键”概念及其衡量指标存在着局限性。基于风险管理理论对网络计划中的“关键”进行拓展研究。对几个经典关键性指标———线路关键概率 (PCP)、工作关键概率 (ACP)和工作关键指标(ACI)进行了比较研究 ;鉴于各自... 详细信息

工程项目计划中传统“关键”概念及其衡量指标存在着局限性。基于风险管理理论对网络计划中的“关键”进行拓展研究。对几个经典关键性指标———线路关键概率 (PCP)、工作关键概率 (ACP)和工作关键指标(ACI)进行了比较研究 ;鉴于各自的利弊 ,提出应将ACP与ACI相结合的管理思路。同时提出了一个表征项目整体关键 /风险水平的新指标PCI,着重阐述了各指标在项目决策与管理中的重要作用。用VisualC ++开发了相应网络计划蒙特卡洛仿真 (MCS)软件NETSIMU ,并将其应用于一个工程实例分析。

关键词：网络计划风险管理关键性蒙特卡洛仿真

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公路路域生态环境保护与恢复技术现状与展望

水土保持研究 2007年第5期14卷 106-109页

作者：陈学平江玉林张洪江李振宇北京林业大学水土保持学院北京100083 交通部科学研究院交通可持续发展研究中北京100029 交通部科学研究院交通可持续发展研究中心北京100029

针对公路建设造成的环境影响,综述了发达国家在公路生态环境保护与恢复建设的经验教训,并在对我国公路建设生态环境保护制度建设、技术发展、管理体制问题等综合分析基础上,提出了我国公路生态环境保护发展思路。

关键词：公路路域生态环境保护环境恢复展望

Community-based prevention and treatment of cardiovascular diseases

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Journal of Geriatric Cardiology 2024年第3期21卷 315-322页

作者： Sheng-Shou HU The Writing Committee of the Report on Cardiovascular Health and Diseases in china Fuwai Hospital National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

The Annual Report on Cardiovascular Health and Diseases in china(2022)intricate landscape of cardiovascular health in *** is the third section of the report with a specific focus on community-based prevention and treatment of cardiovascular diseases(CVD).This section of the report underscores the importance of initiatives outlined in the"Healthy china 2030 Plan,"emphasizing the comprehensive prevention and control strategy for chronic diseases.A key aspect of this plan involves the establishment of national demonstration areas aimed at comprehensive prevention and control of chronic *** 2020,488 such areas had been set up across china,surpassing the initial target and covering a significant proportion of counties and *** report highlights the successful implementation of these strategies in Lishan district,Anshan city,where demonstration areas for comprehensive prevention and control of chronic diseases were launched in *** the course of seven years,the number of healthy units increased substantially,leading to improvements in managing risk factors for CVD among *** reductions in prevalence rates of overweight,obesity,smoking,passive smoking,and drinking were observed,along with the development of healthier behaviors among ***,Qiaokou district in Wuhan City,designated as a national demonstration area in 2014,implemented comprehensive public health promotion ***,special clinics for hypertension intervention were established,contributing to an increase in self-reported rates of hypertension,a slight decrease in prevalence,and a remarkable improvement in the control rate among treated ***,these efforts underscore the effectiveness of community-based approaches in driving positive health outcomes and advancing the comprehensive prevention and control of chronic diseases,particularly cardiovascular diseases,in china.

关键词： prevention district treatment

Cardiovascular Risk Factors in china

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Journal of Geriatric Cardiology 2024年第2期21卷 153-199页

作者： Sheng-Shou HU the Writing Committee of the Report on Cardiovascular Health and Diseases in china Fuwai Hospital National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina 不详

The Annual Report on Cardiovascular Health and Diseases in china(2022) intricate landscape of cardiovascular health in china. This section dissects cardiovascular risk factors in china which including hypertension, dyslipidemia, diabetes mellitus, chronic kidney disease, metabolic syndrome and air pollution. Hypertension prevalence has steadily increased in china,with efforts to control it facing challenges in achieving optimal rates, especially in rural areas. Interventions like salt substitutes and intensive blood pressure control show promise but need improvement. Abnormal lipid levels, indicative of dyslipidemia,have risen significantly, posing a risk for cardiovascular diseases. Despite efforts, many patients struggle to achieve target lipid levels, necessitating improved treatment strategies. Both type 1 and type 2 diabetes mellitus affect millions of adults in china,with long-term complications adding to the disease burden. Early intervention and effective management are crucial to mitigate its impact. Prevalent among older adults, chronic kidney disease is associated with diabetes mellitus, hypertension, and cardiovascular diseases, necessitating comprehensive management approaches. The prevalence of metabolic syndrome, characterized by a cluster of risk factors, has increased in both adults and adolescents, calling for lifestyle modifications and public health interventions. Ambient and household air pollution remain significant environmental risk factors, despite some improvements in air quality. Continued efforts to reduce emissions are essential for mitigating associated health risks. Addressing these risk factors requires a multifaceted approach, including public health initiatives, policy interventions, and individual-level strategies to promote healthy lifestyles and reduce environmental exposures. Surveillance and research efforts are crucial for monitoring trends and developing effective strategies to lessen the burden of cardiovascular diseases in

关键词： landscape adding spite

Heart failure in china:epidemiology and current management

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Journal of Geriatric Cardiology 2024年第6期21卷 631-641页

The Annual Report on Cardiovascular Health and Diseases in china(2022)intricate landscape of cardiovascularhealth in *** connection with the previous section,this sixth section of the report offers a comprehensive analysis of heart failure(HF)in *** is one of the most important cardiovascular disease in the 21st *** mortality is equivalent to that of *** is an important public health problem that seriously affects the health of Chinese *** recent years,with the deepeningof understanding,the change of treatment principles,the innovation of treatment methods and the update of treatment guidelines,the in-hospital mortality of HF patients has declined,and the long-term prognosis is also ***,there are stilldifferences in the management level of HF among different hospitals in *** to improve the standardized diagnosis andtreatment level of HF in china remains an important challenge.

关键词： epidemiology diagnosis treatment

ON DISCRETE PROJECTION AND NUMERICAL BOUNDARY CONDITIONS FOR THE NUMERICAL SOLUTION OF THE UNSTEADY INCOMPRESSIBLE NAVIER-STOKESEQUATIONS

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Journal of Computational Mathematics 2002年第1期20卷 35-56页

作者： Lan Chieh Huang (ICMSEC, academy of Mathematics and System sciences, Chinese academy of sciences, Beijing 100080, china) ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences 北京 100080

Focuses on a study on the fully implicit Crank Nicholson (CN) schemes and three projection methods for approximate preservation of component-consistency under projection. Transformation from incompressible Navier-Stokes equations to differential algebraic equations CN schemes; Local errors of CN projection methods; Numerical boundary conditions.

关键词： differential algebraic equations discrete projection numerical boundary conditions

Direct Optimization of Low-thrust Many-revolution Earth-orbit Transfers

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Chinese Journal of Aeronautics 2009年第4期22卷 426-433页

作者： Gao Yang academy of Opto-Electronics,Chinese academy of sciences,Beijing 100190,china [a]academy of Opto-Electronics Chinese Academy of Sciences Beijing 100190 China

Low-thrust Earth-orbit transfers with 10^- 5-order thrust-to-weight ratios involve a large number of orbital revolutions which poses a real challenge to trajectory optimization. This article develops a direct method to optimize minimum-time low-thrust many-revolution Earth-orbit transfers. A parameterized control law in each orbit, in the form of the true optimal control, is proposed, and the time history of the parameters governing the control law is interpolated through a finite number of nodal values. The orbital averaging method is used to significantly reduce the computational workload and the trajectory optimization is conducted based on the orbital averaging dynamics expressed by nonsingular equinoctial elements. Furthermore, Earth＇s shadowing and perturbation effects are taken into account. The optimal transfer problem is thus converted to the parameter optimization problem that can be solved by nonlinear programming. Taking advantage of the mapping between the parameterized control law and the Lyapunov control law, a technique is proposed to acquire good initial guesses for optimization variables, which results in enlarged convergence domain of the direct optimization method. Numerical examples of optimal Earth-orbit transfers are presented.

关键词： low thrust orbital transfer optimization direct method orbital averaging Lyapunov method

THE DUAL MIXED METHOD FOR AN UNILATERAL PROBLEM

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Journal of Computational Mathematics 2003年第6期21卷 733-746页

作者： Lie-heng Wang(LSEC, ICMSEC, academy of Mathematics and System sciences, Chinese academy of sciences,Beijing 100080, china) LSEC ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China

In this paper, the dual mixed method for an unilateral problem, which is the simplified modelling of scalar function for the friction-free contact problem, is considered. The dual mixed problem is introduced, the existence and uniqeness of the solution of the problem are presented, and error bounds O(h3/4) and O(h3/2) are obtained for the dual mixed finite element approximations of Raviart-Thomas elements for k = 0 and k = 1 respectively.

关键词： Dual Mixed Method Unilateral Problem.