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Research and application of real-time monitoring and early warning thresholds for multi-temporal agricultural products information

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Journal of Integrative Agriculture 2020年第10期19卷 2582-2596页

作者： XU Shi-wei WANG Yu WANG Sheng-wei LI Jian-zheng Key Laboratory of Agricultural Information Service Technology of the Ministry of Agriculture and Rural Affairs Bejing 100081P.R.China Research Center of Agricultural monitoring and early warning Engineering Technologies Beijing 100081P.R.China Key Open Laboratory of Itelligent Agricultural early warning Technologies and Systems Chinese Academy of Agricultural SciencesBejjing 100081P.R.China Agriculture Information Institute Chinese Academy of Agricultural SciencesBeiing 100081P.R.China

monitoring and early warning is an important means to effectively prevent risks in agricultural production,consumption and *** particular,with the change of modes of national administration against the background of big data,improving the capacity to monitor agricultural products is of great significance for macroeconomic *** product information early warning thresholds are the core of agricultural product monitoring and early *** to appropriately determine the early warning thresholds of multi-temporal agricultural product information is a key question to realize real-time and dynamic monitoring and early *** on the theory of abnormal fluctuation of agricultural product information and the research of substantive impact on the society,this paper comprehensively discussed the methods to determine the thresholds of agricultural product information fluctuation in different time *** on the data of the National Bureau of Statistics of China(NBSC)and survey data,this paper used a variety of statistical methods to determine the early warning thresholds of the production,consumption and prices of agricultural *** with Delphi expert judgment correction method,it finally determined the early warning thresholds of agricultural product information in multiple time,and carried out early warning analysis on the fluctuation of agricultural product monitoring information in *** results show that:(1)the daily,weekly and monthly monitoring and early warning thresholds of agricultural products play an important early warning role in monitoring abnormal fluctuations with agricultural products;(2)the multitemporal monitoring and early warning thresholds of agricultural product information identified by the research institute can provide effective early warning on current abnormal fluctuation of agricultural product information,provide a benchmarking standard for China's agricultural production,consumption a

关键词： agricultural product information monitoring and early warning threshold multi-temporal real-time dynamics

Design and Availability Research of a Flammable and Explosive Volatiles monitoring and early warning System (FEVMEW) for the Bus Crowded Places

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Journal of Computer and Communications 2020年第12期8卷 83-90页

作者： Cen Yu Weibin Guo Ruyi Li Qiang Chen Tianping Xu Anhui Xin’he Defense Equipment Technology Joint Co. Ltd. Hefei China Institute of Intelligent Machines (IIM) Hefei Institutes of Physical Science (HIPS) Chinese Academy of Sciences (CAS) He-fei China

In order to reduce the arson or accidental fire losses, we developed a gas sensitive detector used for the rapid detection and early warning of flammables in crowded places such as buses. A MEMS (Micro-Electro-Mechanical System) based thin film semiconductor was fabricated as the gas sensor. To obtain the target gas selective response, the surface of the sensitive film was modified with highly active metal catalytic nano-particles. Thus the anti-interference ability was improved and the false alarm rate was effectively reduced. Furthermore, the modular embedded system for information acquisition and transmission was developed. Supported by the Airflow Precision control system (APs), the rapid warning of volatile gas of flammable substances was realized. Experiments showed that RAs has satisfied selectivity to volatiles of usual flammable liquid, such as the output voltage reaches 3 V (0 - 3.3 V). With simulation about the actual installation state in bus, MWs sounds an alarm at 2 minutes after splashing 50 mL 92# petrol to the floor. For the last two years, FEVMEW has been integrated into more than 4000 buses in Hefei. This design has been proved feasible according to the actual operation.

关键词： Flammable and Explosive Volatiles monitoring and early warning Bus Crowded Places Gas Sensitive MEMS Chip Airflow Regulating

Design and Availability Research of a Flammable and Explosive Volatiles monitoring and early warning System（FEVMEW） for the Bus Crowded Places

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Design and Availability Research of a Flammable and Explosiv...

Construction of the monitoring,early warning and Reporting System of Sudden Environmental Pollution Accident

作者： Cen Yu Weibin Guo Ruyi Li Qiang Chen Tianping Xu Anhui Xin'he Defense Equipment Technology Joint Co. Ltd. Institute of Intelligent Machines (IIM) Hefei Institutes of Physical Science (HIPS)Chinese Academy of Sciences (CAS)

In order to reduce the arson or accidental fire losses, we developed a gas sensitive detector used for the rapid detection and early warning of flammables in crowded places such as buses. A MEMS（Micro-Electro-Mechanical System） based thin film semiconductor was fabricated as the gas sensor. To obtain the target gas selective response, the surface of the sensitive film was modified with highly active metal catalytic nano-particles. Thus the anti-interference ability was improved and the false alarm rate was effectively reduced. Furthermore, the modular embedded system for information acquisition and transmission was developed. Supported by the Airflow Precision control system（APs）, the rapid warning of volatile gas of flammable substances was realized. Experiments showed that RAs has satisfied selectivity to volatiles of usual flammable liquid, such as the output voltage reaches 3 V（0-3.3 V）. With simulation about the actual installation state in bus, MWs sounds an alarm at 2 minutes after splashing 50 mL 92# petrol to the floor. For the last two years, FEVMEW has been integrated into more than 4000 buses in Hefei. This design has been proved feasible according to the actual operation.

关键词： Flammable and Explosive Volatiles monitoring and early warning Bus Crowded Places Gas Sensitive MEMS Chip Airflow Regulating

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Construction of the Monitoring,Early Warning and Reporting S...

Chinese public participation monitoring and warning system for geological hazards

2007中国科协年会

作者： Jiang Wei Feng Xueyang School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

Based on the analysis of the hazard in the sudden environmental pollution accidents and the current capacity for emergency monitoring in China,the new concept and suggestions for a sudden environmental pollution respo... 详细信息

关键词： environmental pollution sudden monitoring and early warning reporting system

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Journal of Mountain Science 2020年第7期17卷 1553-1564页

作者： WU Sheng-nan LEI Yu CUI Peng CHEN Rong YIN Pi-hua Key Laboratory of Land Surface Pattern and Simulation Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing10010China Key Laboratory of Mountain Hazards and Earth Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610041China University of Chinese Academy of Sciences Beijing100049China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing100101China Liangshan Prefecture Geological Environmental Center Liangshan615000China Key Laboratory of Environmental Change and Natural Disaster Ministry of EducationBeijing Normal UniversityBeijing100875China Faculty of Geographical Science Academy of Disaster Reduction and Emergency ManagementBeijing Normal UniversityBeijing100875China

In China,many geological hazards occurred in remote mountainous regions,and it was time-consuming to disseminate disaster information for the responsible parties to make timely ***,only relying on professionals to monitor and manage disasters was demanding and *** Chinese government created a system to engage residents in the process of disaster risk management,namely’Public Participation monitoring and warning’(PPMW),to disseminate timely disaster information and bring down management *** objective of this system was to reduce casualties with minimum cost by organizing residents to evacuate from disasters in *** paper introduced the PPMW system,including its structure,operation mechanism by reviewing government documents and research articles,and its implementation by a case study of a landslide at Boli village(E 101°01’,N 27°29’),Yanyuan County,Sichuan Province,China on July 19th ***,this paper analyzed the strengths and limitations of the system and discussed its future *** had the potential to become an affordable disaster risk management tool for other countries facing similar situations to China.

关键词： Geological hazard monitoring and early warning Disaster risk management Public participation Affordable solution

Coalbursts in China: Theory, practice and management

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第1期16卷 1-25页

作者： Yishan Pan Yimin Song Hao Luo Yonghui Xiao Institute of Disaster Rock Mechanics Liaoning UniversityShenyang110036China School of Civil Engineering North China University of TechnologyBeijing100144China College of Computer Science Liaoning UniversityShenyang110036China School of Physics Liaoning UniversityShenyang110036China

Coalburst is one of the most serious disasters that threaten the safe production of coal mines, and this disaster is particularly serious in China. This paper presents an overview of coalbursts in China since 1980s. From the "stress and energy" and "regional and local" perspectives, the achievements in the theory, practice and management of coalbursts in China are systematically summarized. A theoretical system of coalbursts has been formed to reveal the deformational behavior of coalbursts and explain the mechanism of coalbursts. The occurrence conditions of coalbursts are put forward and the critical stress is obtained. The stress index method for risk evaluation of coalbursts before mining is proposed, and the deformation localization prediction method of coalbursts is put forward. The relationship between energy release and absorption in the process of coalbursts is found, and the prevention and control methods of coalbursts, including the regional method, the local method and support, are presented. The safety evaluation index of coalburst prevention and control is put forward. The integrated prevention and control method for coal and gas outbursts is proposed. The prevention and control technology and equipment of coalbursts have also been developed. Amongst them, the distribution law of the critical stress in China coalburst mines is discovered. The technology and equipment for monitoring, prevention and control of coalbursts, as well as for integrated prevention and control of combined coalbursts and other disasters, have been developed. The energy-absorbing and coalburst-preventing support technology for roadways is invented, and key engineering parameters of coalburst prevention and control are pointed out. In China, coalburst prevention and control laws and standards have been developed. Technical standards for coalbursts are formulated, statute and regulations for coal mines are established, and regulatory documents are promoted.

关键词： Coalbursts Rockbursts Dynamic disaster Energy-absorbing support monitoring and early warning

Development of portable user-interactive holographic information collector for agricultural product markets

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International Journal of Agricultural and Biological Engineering 2020年第3期13卷 143-153页

作者： Shiwei Xu Denghua Li Yongen Zhang Wei Chen Jiayu Zhuang Jiajia Liu Shengwei Wang Agricultural Information Institute of Chinese Academy of Agricultural Sciences Beijing 100081China Key Laboratory of Agricultural Information Service Technology Ministry of Agriculture and Rural AffairsBeijing 100081China Research Center of Agricultural monitoring and early warning Engineering Technology Beijing 100081China

The efficient and accurate collection of agricultural product market information serves as the basis for the effective regulation of agricultural product *** achieve a comprehensive,accurate,and timely collection of agricultural product market information,this study puts forth a technique for collecting holographic information of agricultural product markets.A portable human-machine interaction device with an Advanced RISC(reduced instruction set computer)Machines(ARM)-based processor as the core is *** information such as agricultural product market trading time,trading place,product name,price,and trading volume can be *** embedded technology and component technology,innovative agricultural product market positioning,and matching,standardized collection,and data processing,and in combination with intelligent algorithms for analysis and early warning,a mobile application terminal for information collection is developed,namely,a holographic information collector for agricultural product markets(named Nongxincai).By using a layered structure,the hardware integrates microprocessor,storage,power,application and communication interface,and human-machine interaction *** device has the advantages of miniaturization,the whole-machine power consumption of less than 0.5 W,and continuous operating time of at least 10 h.A supporting software system for Nongxincai has also been developed,in which Microsoft Windows Mobile 6.5 is employed as the operating system,and the CPU frequency is up to 600 *** configuration fully meets the computing requirements of map processing and large-volume data processing and has high *** has been popularized and applied in 12 provinces/municipalities in *** has played an important role in the monitoring and early warning of different varieties of agricultural products and target prices of soybean and cotton.

关键词： agricultural product market holographic information portable user-interactive information collector monitoring and early warning

Research on monitoring and earlywarning System of Marine Organisms for the Intake of Nuclear PowerPlants

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Animal Husbandry and Feed Science 2018年第4期10卷 236-240页

作者： lu hairong meng yahui zhang xiaochen duan yongbo Suzhou Nuclear Power Research Institute Co. Ltd. Suzhou 215004 China 不详

An monitoring and earlywarning system is proposed for marine organisms and the cause of water intake blockage is analyzed. Based onthe intelligent sensing technology, computer software and hardware technology and digital signal processing technology, the buoy monitoring platformsystem is developed by internet of things technology, cloud computing and the application of large data. Remote realtime monitoring of aquatic organisms and foreign bodies is realized based on underwater acoustic detection and low light imaging technology. Data processing center is established to store, analyze and process monitoring information and display it in real time, and provide emergency decision support. Through development and test of relevant key equipments, the reliability of cold source system of nuclear power plants is improved, which effectively reduces theinfluence of marine biological invasion on security and economic operation of the units.

关键词： Water intake of nuclear power plants Marine biological invasion monitoring and early warning

Mechanism,prevention,and control of mining-induced dynamic disasters in underground metal mines in China:Challenges and solutions

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Journal of Central South University 2024年第8期31卷 2549-2606页

作者： LI Peng CAI Mei-feng MIAO Sheng-jun REN Fen-hua GORJIAN Mostafa PENG Chao Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China Department of Earth Ocean and Atmospheric SciencesUniversity of British ColumbiaVancouverBCCanada Deep Mining Laboratory of Shandong Gold Group Co. Ltd.Laizhou 261442China

Metal mineral resources play an indispensable role in the development of the national *** disasters in underground metal mines seriously threaten mining safety,which are major scientific and technological problems to be solved *** this article,the occurrence status and grand challenges of some typical dynamic disasters involving roof falling,spalling,collapse,large deformation,rockburst,surface subsidence,and water inrush in metal mines in China are systematically presented,the characteristics of mining-induced dynamic disasters are analyzed,the examples of dynamic disasters occurring in some metal mines in China are summarized,the occurrence mechanism,monitoring and early warning methods,and prevention and control techniques of these disasters are highlighted,and some new opinions,suggestions,and solutions are proposed ***,some shortcomings in current disaster research are pointed out,and the direction of efforts to improve the prevention and control level of dynamic disasters in China’s metal mines in the future is *** integration of forward-looking key innovative theories and technologies in the abovementioned aspects will greatly enhance the cognitive level of disaster prevention and mitigation in China’s metal mining industry and achieve a significant shift from passive disaster relief to active disaster prevention.

关键词： underground metal mines dynamic disasters mechanism monitoring and early warning prevention and control