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COMPARISON OF THE HYDRO-CLIMATOLOGICAL CHARACTERISTICS FOR THE EXTRA-ORDINARY flood INDUCED BY TROPICAL CYCLONE IN THE SELECTED river BASINS

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Tropical Cyclone Research and Review 2013年第1期2卷 45-54页

作者： DONGRYUL LEE BYUNGHWA OH HWIRIN KIM SANGHEON LEE GUNHUI CHUNG Water Resources Research Division Korea Institute of Construction TechnologyRepublic of Korea Water Resources Division Korea Institute of Construction TechnologyRepublic of Korea river Information Center Han River Flood Control OfficeMOLITRepublic of Korea river Information Center Han River Flood Control OfficeMOLITRepublic of Korea Department of Civil Engineering Hoseo UniversityCheongchungnam-DoRepublic of Korea

As the increased interesting on global warming and extreme water-related disasters, there are many countries which have been suffering from the extreme floods induced by tropical cyclones in East Asia. Therefore, in this study, the geographical and hydrometeolorogical characteristics and flood forecasting and warning systems in the selected basins from Thailand, Philippines, and South Korea are compared. Chao Phraya river basin, Pampanga river basin and Nakdong river basin are selected from Thailand, Philippines, and South Korea, respectively. As the results from the comparison, it was discovered that the different geographical and hydrometeolorogical characteristics delivers the different types of flood forecasting and warning systems in each basin. Due to the different geographical characteristics, the damage caused by the similar amount of monthly rainfall is different according to the historical records. This difference is expected to be caused by the different river regime coefficient and soil structures. The flood forecasting and warning systems in three basins are also different. South Korea has the centralized control system for the flood forecasting and warning, while the other basins have the more localized monitoring, forecasting, and warning procedures. In addition to the flood forecasting and warning system, according to the geographical characteristics, the density of the gauging stations is also different. The analyzed results might help the policy makers in the basins develop the adaptive flood forecasting and warning system considering the basin characteristics. In the further study, more investigation has to be done for the quantified results from the three basins.

关键词： global warming extreme water-related disasters countries

Review of the status of urban flood monitoring and forecasting in TC region

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Tropical Cyclone Research and Review 2022年第2期11卷 103-119页

作者： Jinping Liu Hyo-Seob Cho Sazali Osman Hyeon-Gyo Jeong Kwonmin Lee UNESCAP/WMO Typhoon Committe Seccretarist MacaoChina han river flood control office Ministry of EnvironmentSeoulRepublic of Korea Department of Irrigation and Drainage Ministry of Natural Resources and WaterPutrajayaMalaysia Department of Climate and Energy Systems Engineering Ewha Womans UniversitySeoulRepublic of Korea

With the impacts of rapid urbanization and climate change,the urban flood has increasingly become a major hazard risk faced by human being in recent *** catastrophic urban flood events appear every year in the world,especially in Asia and Pacific region due to its geographical composition,density population and un-even economic and social *** reduce the urban flood risk and enhance the resilience of vulnerable communities,especially coastal communities,the Members of ESCAP/WMO Typhoon Committee(TC)have made their great efforts including engineering and non-engineering measures based on their different national *** a key part of non-engineering measures,it is recognized that improving urban flood monitoring and forecasting is a measure with high benefit related to cost on urban flood risk *** recent years,TC Members enhanced their capacity building on urban flood monitoring,forecasting and simulation,inundation mapping,*** order to enhance the technical cooperation and exchange on this aspect,Typhoon Committee Working Group on Hydrology(WGH)conducted two projects on“Urban flood Risk Management in Typhoon Committee Area(UFRM)”and“Operation System for Urban flood Forecasting and Inundation Mapping(OSUFFIM)”in the past *** paper generally reviewed the situation and causes of urban flood in TC region;briefly summarized the progresses and shortages on urban flood monitoring and forecasting in TC Members;and initially discussed the areas to be enhanced in future for improvement of urban flood monitoring,forecasting and simulation,and inundation mapping with up-to-date development of weather radar and satellite monitoring,image-based monitoring,information technology(IT),Internet of Things(IoT),big data and artificial intelligence(AI).

关键词： Urban flood Monitoring Forecasting

Comprehensive benefit of flood resources utilization through dynamic successive fuzzy evaluation model: A case study

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中国科学：技术科学英文版 2010年第2期53卷 529-538页

作者： FENG Feng1,2, XU ShiGuo1, LIU JianWei1, LIU Dan1,3 & WU Bo4 1 Institute of Water Environment, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China 2 Yellow river Conservancy Technical Institute, Kaifeng 475003, China 3 College of Water Resources, Shenyang Agricultural University, Shenyang 110161, China 4 office of flood control and Draught Relief in Jilin Province, Changchun 130033, China Institute of Water Environment School of Civil and Hydraulic Engineering Dalian University of Technology Dalian China Yellow river Conservancy Technical Institute Kaifeng China College of Water Resources Shenyang Agricultural University Shenyang China office of flood control and Draught Relief in Jilin Province Changchun China

Taking the flood resources utilization in Baicheng, Jilin during 2002–2007 as the research background, and based on the entropy weight and multi-level & multi-objective fuzzy optimization theory, this research established a multi-level & semi-constructive index system and dynamic successive evaluation model for comprehensive benefit evaluation of regional flood resources utilization. With the year 2002 as the base year, the analyzing results showed that there existed a close positive correlation between flood utilization volume and its benefits, comprehensive evaluation value and its comparison increment. Within the six successive evaluation years, the comprehensive benefit of 2003 was the best, in which the benefit evaluation increment reached 82.8% whereas the year of 2004 was the worst, in which the increment was only 18.2%. Thus the sustainability and correctness of the evaluation were verified by six years successive evaluation and increment comparison. The analyzing results showed that the economic benefits, ecological benefits and social benefits of flood utilization were remarkable, and that the comprehensive benefit could be improved by increasing flood utilization capacity, which would promote the regional sustainable development as well. The established dynamic successive evaluation provides a stable theoretical basis and technical support for further flood utilization.

关键词： flood resources utilization comprehensive benefit dynamic successive fuzzy evaluation Baicheng City

Characteristics and variation law of wind-blown sand delivered to the Ningxia-Inner Mongolia reach of the Yellow river under a changing environment

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International Journal of Sediment Research 2022年第2期37卷 188-201页

作者： Zhichun Yue Ximin Yuan Lugan Cao Fuchang Tian Chao han Hongwu Zhang State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University State Key Laboratory of Hydroscience and Engineering Tsinghua University flood control and Drought Relief Headquarters office in Ningxia

Wind-blown sand is one of the key factors affecting the evolution of sediment transport,erosion,and deposition in rivers crossing desert ***,the differences and complex variations in the spatial and temporal distribution of the underlying surface conditions are seldom considered in research on the river inflow of wind-blown sand over a long time *** Yellow river contains a large amount of *** Ningxia-Inner Mongolia reach of the Yellow river was selected as the research area of the current *** reach flows out of Heishanxia and then flows through the Tengger,Hedong,Ulan Buh,and Kubuqi *** the current study,the wind speed,vegetation coverage,and sand matter on the river basin’s surface were analyzed from the perspectives of the river basin surface and riverbank *** vegetation coverage of the river basin’s surface was calculated using the normalized difference vegetation *** on the types of sand matter,vegetation coverage,and other underlying surface conditions,the loose particle sediment transport efficiency was determined,the Lettau and Lettau formula for the sediment transport rate was modified,a surface wind-erosion sand flux model was established,and the amount of wind-blown sand transported into the Ningxia-Inner Mongolia reach was *** results show that,from 1981 to 2014,the annual average amount of wind-blown sand transported into the main stream and tributaries of the Ningxia-Inner Mongolia reach of the Yellow river were 7,310,000 and 13,190,000 t,*** Shizuishan-Bayangole reach received51% of the total wind-blown sand that transported into the main stream,while the tributaries in the Shidakongdui area were the most important source wind-blown sand,providing 74% of the total windblown sand inflow from the *** recent years,the amount of sand transported into the river of the mainstream and tributaries of the Ningxia-Inner Mongolia reach of the Yellow river has significantly decr

关键词： Yellow river Wind speed Vegetation coverage Regional wind erosion

Sampling-efficient path planning and improved actor-critic-based obstacle avoidance for autonomous robots

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Science China(Information Sciences) 2024年第5期67卷 197-214页

作者： Yefeng YANG Tao HUANG Tianqi WANG Wenyu YANG han CHEN Boyang LI Chih-yung WEN Department of Aeronautical and Aviation Engineering The Hong Kong Polytechnic University Center for control Theory and Guidance Technology Harbin Institute of Technology School of Engineering The University of Newcastle Research Center for Unmanned Autonomous Systems The Hong Kong Polytechnic University

Autonomous robots have garnered extensive utilization in diverse fields. Among the critical concerns for autonomous systems, path planning holds paramount importance. Notwithstanding considerable efforts in its development over the years, path planning for autonomous systems continues to grapple with challenges related to low planning efficiency and inadequate obstacle avoidance response in a timely *** study proposes a novel and systematic solution to the path planning problem within intricate office buildings. The solution consists of a global planner and a local planner. To handle the global planning aspect, an adaptive clustering-based dynamic programming rapidly exploring random tree(ACDP-RRT) algorithm is proposed. ACDP-RRT effectively identifies obstacles on the map by leveraging geometric *** obstacles are then represented as a collection of sequentially arranged convex polygons, optimizing the sampling region and significantly enhancing sampling efficiency. For local planning, a network decoupling actor-critic(ND-AC) algorithm is employed. The proposed ND-AC simplifies the local planner design process by integrating planning and control loops into a neural network(NN) trained via an end-to-end model-free deep reinforcement learning(DRL) framework. Moreover, the adoption of network decoupling(ND) techniques leads to an improved obstacle avoidance success rate when compared to conventional actor-critic(AC)-based methods. Extensive simulations and experiments are conducted to demonstrate the effectiveness and robustness of the proposed approach.

关键词： rapidly exploring random tree (RRT) adaptive clustering network decoupling actor critic (AC) path planning

Efficacy of substances containing 3 types of active ingredients-saponins, flavones, and alkaloids in regulation of cytokines in autoimmune diseases a systematic review and Meta-analysis based on animal studies

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Journal of Traditional Chinese Medicine 2024年第3期44卷 417-426页

作者： ZHU Ruifang ZhanG Jun LYU Yaru CHEN Yulu han Shifan WANG Hongwei Key Laboratory for Molecular Diagnosis and Treatment of Hematologic Diseases Second Hospital of Shanxi Medical UniversityShanxi 030001China School of Nursing Shanxi Medical UniversityShanxi 030001China Editorial office First Hospital of Shanxi Medical UniversityShanxi 030001China

OBJECTIVE: To investigate the efficacy of substances containing 3 types of active ingredients-saponins,flavones, and alkaloids on experimental animals with autoimmune diseases(AIDs).METHODS: The protocol for this systematic review and Meta-analysis was prospectively registered with PROSPERO(CRD42023395741). Searches were conducted in the China National Knowledge Infrastructure, Wanfang, Chinese Science and Technology Journals, China Biomedical, Pub Med,Cochrane Library, and Embase databases to screen for animal studies investigating the therapeutic effects of saponins, flavones, or alkaloids on autoimmune diseases;consequently, corresponding data extraction tables were prepared. Systematic Review Centre for Laboratory Animal Experimentation was used to assess the risk of methodological bias in the included literature. RevMan 5.4 was used for the Meta-analysis on the 8 serum ***: A total of 31 studies were included, all of which were randomized controlled studies. Meta-analysis indicated that substances rich in saponins, flavones, and alkaloids reduced serum levels of interleukin(IL)-1β[standardized mean difference(SMD) =-1.94, 95%confidence interval(CI)(-2.99,-0.90), P = 0.0003], IL-6 [SMD =-1.65, 95% CI(-2.33,-0.97,) P hanges of immunerelated cytokines, it may be a novel dietary substance to relieve and control autoimmune diseases in the future.

关键词： autoimmune diseases saponins flavones alkaloids system evaluation Meta-analysis

REVIEW AND PROSPECTS OF HYDROLOGICAL COMPONENT DEVELOPMENT OF ESCAP/WMO TYPHOON COMMITTEE

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Tropical Cyclone Research and Review 2018年第1期7卷 11-22页

作者： JINPING LIU YOSHIO TOKUNAGA HYOSEOB CHO JINXING WANG ESCAP/WMO Typhoon Committee Secretariat International Centre for Water Hazard and Risk Management Public Works Research Institute han river flood control office Ministry of Land Infrastructure and Transport Water Information Center Ministry of Water Resources

Hydrological Component has been one of three essential parts of ESCAP/WMO Typhoon *** Working Group on Hydrology(WGH)established at TC 33rd Session in 2000 is the first working group among three basic components of the Committee,which has been repeatedly recognized as the most active component in the Committee who has integrated conducted successfully a number of cooperation projects and integrated actions among *** the past decade,WGH has implemented wide range activities under the framework of Strategic Plan of the *** achievement of those cooperation projects played very important roles in promoting the capacity building on hydrological monitoring,forecasting and early warning among *** paper introduced the Term of Reference for WGH and its high priorities,and summarized the activities conducted in recent *** paper also reviewed the progresses in TC Members on hydrological observation and monitoring network,hydrological data collection and transmission,hydrological information and forecasting,and establishment of flood forecasting *** paper also pointed out the development direction and the area to be enhanced for hydrological component in future,including:(1)application of QPE/QPF in flood forecasting and establishment of the coupled hydro-meteorological modeling;(2)development of impact-based,risk-based and community-based flood forecasting and warning system,including storm surge,urban flood,sediment disaster(flash flood,landslide and mudflow);and(3)application of internet of things(IOT),big data,cloud computing,and mobile internet in flood monitoring,forecasting and early warning,and better response,particularly in flood inundation mapping and QPE/QPF products application.

关键词： Typhoon Committee Hydrological Component development review prospect

Immune control Strategies for Vaccinia Virus-related Laboratory-acquired Infections

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Biomedical and Environmental Sciences 2014年第2期27卷 142-146页

作者： WEI Qiang JIANG Meng Nan han Jun WANG Zi Jun office of Laboratory Management Chinese Center for Disease Control and Prevention National Institute for Virus Disease control and Prevention

While presenting biological characteristics of vaccinia virus and laboratory-acquired infections during related research processes, this paper focuses on benefits and risks of vaccinia virus immunization in relation to laboratory-acquired infections, describes characteristics and the adaptation of vaccinia virus vaccine, analyses the role vaccinia virus immunization plays in the prevention and control of laboratory-acquired infections, and finally proposes solutions and countermeasures to further promote and implement immune control strategies. The problem related to immune strategy and laboratory- acquired infections which is being raised, analyzed and explored plays an active and instructive role in vaccinia virus related researches and laboratory- acquired infections, and also helps to recommend and develop relevant immune strategy for future vaccine control of such infections.

关键词： Immune control Strategies for Vaccinia Virus-related Laboratory-acquired Infections

Qinghai Mountain Disasters and Countermeasures

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Natural Disaster Reduction in China 2001年第3期10卷 28-36页

作者： han Yongrong (office of flood control and Drought Resistance, Qinghai Provincial Government) LI Haiming (Qinghai Institute of Water Conservancy and Hydraulic Power) office of flood control and Drought Resistance Qinghai Provincial Government Qinghai Institute of Water Conservancy and Hydraulic Power

The paper presents a detailed account of the status quo and potential hazards of geological environmental disasters (GED) in Qinghai Province as well as a systematic analysis of the formation and evolution of GED and of the threat and loss caused to the life and property of the local people. Recommendations on how to take effective measures to prevent and control the GED in Qinghai are provided.

关键词： geological disasters cause analysis countermeasures