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A Research on the Causes of Chinese College Students’ Overall Physique Decline and Physique Promotion Strategies

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教育研究前沿（中英文版） 2021年第1期11卷 31-35页

作者： fenglin sun Sports Department Beijing Wuzi University100000China

At present,Chinese colleges and universities are facing the reality of the overall physical decline of college students,and the quality of college physical education has been questioned by all *** order to improve the quality of college physical education and strengthen the physique of college students,this paper first studies the causes of the decline of College Students'overall *** study found that,in addition to historical and social factors,many practical factors of college physical education,including teaching content,teaching organization form,teachers’quality,teaching evaluation mechanism and hardware facilities construction,have great influences on the improvement of college students’overall *** on the causes of the decline of college students’overall physique,this paper puts forward feasible promotion strategies from the aspects of physical education curriculum,extracurricular sports activities,and physique monitoring.

关键词： College Students Physique Decline Causes Promotion Strategies

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中国沿海赤潮灾害时间序列特征的模拟与预测

海洋通报 2021年第2期40卷 232-240页

作者：孙丰霖中国海洋大学海洋与大气学院山东青岛266100

对赤潮灾害时间序列的特征分析是进行赤潮灾害防灾减灾工作的基础,对未来赤潮灾害的预测具有重要意义。通过观察发现中国沿海赤潮灾害年发生频次和分布面积的时间序列(2004—2019年)均呈现出趋势项和周期项并存的特征,因此利用灰色-周... 详细信息

对赤潮灾害时间序列的特征分析是进行赤潮灾害防灾减灾工作的基础,对未来赤潮灾害的预测具有重要意义。通过观察发现中国沿海赤潮灾害年发生频次和分布面积的时间序列(2004—2019年)均呈现出趋势项和周期项并存的特征,因此利用灰色-周期外延组合预测模型对两个序列中的趋势项和周期项进行提取,模型的拟合度分别达到95.20%和95.24%,优于灰色模型、Fourier级数扩展模型和Holt-Winter指数平滑模型等。最后将该模型结果应用到对未来中国赤潮灾害的预测中,得到结论:2020和2021年赤潮灾害发生频次分别为39次和42次,与2019年相比略有上升,2020年赤潮灾害分布面积达到3168km^(2),与2019年相比增加了约59%,而2021年赤潮灾害分布面积出现回落,为1901km^(2)。

关键词：赤潮灾害时间序列特征灰色-周期外延组合预测模型

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基于证据理论的风暴潮灾害损失评估

热带海洋学报 2022年第1期41卷 75-81页

作者：孙丰霖中国海洋大学海洋与大气学院山东青岛266100

本文提出了一种基于Dempster-Shafer证据理论的风暴潮灾害损失评估方法。鉴于风暴潮致灾过程中的不确定性,选择合适的具有代表性指标(包括最大风暴潮增水、最大有效波高和防灾减灾能力)产生灾害损失评估的证据,并根据所选指标和风暴潮... 详细信息

本文提出了一种基于Dempster-Shafer证据理论的风暴潮灾害损失评估方法。鉴于风暴潮致灾过程中的不确定性,选择合适的具有代表性指标(包括最大风暴潮增水、最大有效波高和防灾减灾能力)产生灾害损失评估的证据,并根据所选指标和风暴潮直接经济损失之间的相关性大小确定证据权重,最后采用改进的Murphy证据融合算法进行证据融合,从而判断灾害损失等级。通过实证分析发现,本文所提出的方法在判断风暴潮灾害损失等级上的正确率达到93.1%,优于朴素贝叶斯、支持向量机、神经网络和决策树等常用方法,同时本文方法计算简便,且随着训练集样本量的增加,损失评估结果可进一步精细化。

关键词：风暴潮灾害损失评估证据理论灾损等级 Murphy方法

Developing the Science Product Algorithm Testbed for Chinese Next-Generation Geostationary Meteorological Satellites：Fengyun-4 Series

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Journal of Meteorological Research 2017年第4期31卷 708-719页

作者： Min MIN Chunqiang WU Chuan LI Hui LIU Na XU Xiao WU Lin CHEN Fu WANG fenglin sun Danyu QIN Xi WANG Bo LI Zhaojun ZHENG Guangzhen CAO Lixin DONG Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites National Satellite Meteorological Center China Meteorological Administration Beijing 100081

Fengyun-4A（FY-4A）, the first of the Chinese next-generation geostationary meteorological satellites, launched in2016, offers several advances over the FY-2： more spectral bands, faster imaging, and infrared hyperspectral measurements. To support the major objective of developing the prototypes of FY-4 science algorithms, two science product algorithm testbeds for imagers and sounders have been developed by the scientists in the FY-4 Algorithm Working Group（AWG）. Both testbeds, written in FORTRAN and C programming languages for Linux or UNIX systems, have been tested successfully by using Intel/g compilers. Some important FY-4 science products, including cloud mask, cloud properties, and temperature profiles, have been retrieved successfully through using a proxy imager, Himawari-8/Advanced Himawari Imager（AHI）, and sounder data, obtained from the Atmospheric Infra Red Sounder, thus demonstrating their robustness. In addition, in early 2016, the FY-4 AWG was developed based on the imager testbed—a near real-time processing system for Himawari-8/AHI data for use by Chinese weather ***, robust and flexible science product algorithm testbeds have provided essential and productive tools for popularizing FY-4 data and developing substantial improvements in FY-4 products.

关键词： geostationary meteorological satellite FY-4 algorithm testbed cloud properties

基于熵权-灰色关联度分析的暴雨洪涝灾情评估方法

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清华大学学报（自然科学版） 2022年第6期62卷 1067-1073页

作者：陈长坤孙凤琳中南大学防灾科学与安全技术研究所长沙410075

洪涝灾害造成的危害广泛且复杂,合理的洪涝灾害灾情评估方法是制定有效防灾减灾措施的关键手段。根据《洪涝灾情评估标准》(SL579—2012),结合死亡人口、受灾人口、农作物受灾面积、直接经济损失、倒塌房屋、水利设施经济损失等关键影... 详细信息

洪涝灾害造成的危害广泛且复杂,合理的洪涝灾害灾情评估方法是制定有效防灾减灾措施的关键手段。根据《洪涝灾情评估标准》(SL579—2012),结合死亡人口、受灾人口、农作物受灾面积、直接经济损失、倒塌房屋、水利设施经济损失等关键影响因素,建立了洪涝灾害评价指标。综合灰色关联度分析法和熵权法,提出一种针对暴雨洪涝灾情的分级评估方法,并以2014—2018年的全国年度洪灾数据为例进行应用,结合评估结果和实际情况,提出了暴雨洪涝灾害防灾减灾工作的建议。结果表明:全国暴雨洪涝灾情熵权-灰色关联度数值高的区域集中在东南区域和西北区域,防洪防涝工作重点分别在城市防洪和沙漠防洪;2016年全国暴雨灾情熵权-灰色关联度分级属于较大洪涝灾害年。

关键词：暴雨洪涝灾情评价熵权法灰色关联分析防洪治理

Simulation and forecast of the red tide's time series characteristics in China seas

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Marine Science Bulletin 2021年第1期23卷 1-16页

作者： sun fenglin College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100Shandong provinceChina

Analyzing time series characteristics of red tide is the basis of disaster prevention and mitigation,which is very important to red tide *** are trend comp onents and periodic components in annual time series of occurrence freque ncy and area of red tides,so Gray-Periodic Extensional Combinatorial Model(GPECM)is used to extract these *** fitting degree of occurrence frequency and area can reach 95.20% and 95.24%,*** performance of GPECM is better than Gray Model,Fourier Series Extension Model,and Holt-Winter Exponential Smoothing Model in model ***,it is used to forecast the occurrence frequency and area in 2020 and 2021,and results show that the annual frequency of red tides in 2020 and 2021 can rise to 39 and 41,respectively,and that the annual occurrence area of red tides can rise to 3168 km^(2),which is about 59% more than last *** 2021,it can fall to 1901 km^(2).

关键词： red tides time series characteristics Gray-Periodic Extensional Combinatorial Model

FY-3G Satellite Instruments and Precipitation Products:First Report of China’s Fengyun Rainfall Mission In-Orbit

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Journal of Remote Sensing

Journal of Remote Sensing 2023年第1期3卷 463-476页

作者： Peng Zhang Songyan Gu Lin Chen Jian Shang Manyun Lin Aijun Zhu Honggang Yin Qiong Wu Yixuan Shou fenglin sun Hanlie Xu Guanglin Yang Haofei Wang Lu Li HongWei Zhang Sijie Chen Naimeng Lu Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites National Satellite Meteorological Center(National Center for Space Weather)China Meteorological AdministrationBeijingChina Innovation Center for FengYun Meteorological Satellite BeijingChina Shanghai Academy of Spaceflight Technology ShanghaiChina

Precipitation is one of the most important parameters in Earth system but is hard to *** began to develop satellites dedicated to precipitation measurements in the second generation of the FengYun polarorbiting meteorological satellite program(FY-3).The first of total 2 rainfall missions scheduled,FY-3G,was successfully launched on 16 April 2023 and became the world’s third satellite to measure precipitation with space-borne radar after the tropical rainfall measuring mission in 1997 and global precipitation measurement core observatory in *** this manuscript,we illustrate the platform of FY-3G and instruments mounted in great detail,with additional information about ground segments,designed sensor-based products,and retrieval of geophysical *** the 4 months after launch,the specifications of the platform and instruments are under inspection as calibration and validation are carefully *** first images captured by FY-3G are encouraging,and initial results show a strong capability for providing insights into all kinds of precipitation *** important work of data processing,such as data assimilation,data fusion between space-based and ground-based radar,and that between polar and geostationary satellites,as well as future applications in weather modification,has been prepared in *** a pioneer of China’s rainfall missions,FY-3G greatly improves our ability to provide global precipitation measurements,understand Earth’s water and energy cycle,and forecast extreme events for the benefit of society.

关键词： Earth mounted instruments

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天线孔径共用技术研究

电子元件与材料 2014年第7期33卷 48-51页

作者：孙凤林中国西南电子技术研究所四川成都610036

提出了一种新的天线孔径共用的方法。在低频单圆锥天线的辐射非敏感区上加载高频段微带天线阵,可以将两个不同频段和极化的天线集成为一个天线孔径,该天线的体积质量与原低频段天线相当,天线的两个馈电端口集成在原单圆锥天线的地板上... 详细信息

提出了一种新的天线孔径共用的方法。在低频单圆锥天线的辐射非敏感区上加载高频段微带天线阵,可以将两个不同频段和极化的天线集成为一个天线孔径,该天线的体积质量与原低频段天线相当,天线的两个馈电端口集成在原单圆锥天线的地板上。利用电磁仿真软件HFSS分析了该共用孔径天线的性能,在双频段0.7～1.3 GHz和4.1～4.2 GHz内反射系数均小于–10 dB,两个端口之间的隔离度大于31 dB,辐射方向图低频段为全向,高频段为定向,4.15 GHz增益达到11 dBi,仿真结果验证了该孔径共用方法的可行性。

关键词：天线共用孔径双频段双极化宽带全向

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静止轨道微波探测器视场偏差特征分析

热带气象学报 2022年第6期38卷 901-914页

作者：韦晓澄孙逢林中国气象科学研究院北京100081 中国气象局中国遥感卫星辐射测量和定标重点开放实验室/国家卫星气象中心(国家空间天气监测预警中心) 北京100081 许健民气象卫星创新中心北京100081

现有的极轨微波仪器有着较强的穿云能力,空间分辨率较低,故目前而言,国内外鲜有针对微波探测器的视差分析研究,但若未来在静止轨道上搭载空间分辨率较高的静止轨道微波探测器,则微波视场内的视差问题不容忽视。针对未来发展的静止轨道... 详细信息

现有的极轨微波仪器有着较强的穿云能力,空间分辨率较低,故目前而言,国内外鲜有针对微波探测器的视差分析研究,但若未来在静止轨道上搭载空间分辨率较高的静止轨道微波探测器,则微波视场内的视差问题不容忽视。针对未来发展的静止轨道卫星微波探测器,利用辐射传输模式CRTM模拟该类仪器的亮温,并分析其受视场内云影响所产生的视场偏差,结果表明空间分辨率越高,视差问题越明显;天顶角越大,云顶高度越高,视差越大。除此之外,以台风和高云的个例对实际情况中微波探测仪内视差误差进行了展示,说明静止轨道微波仪器尽管有较高的时间分辨率,但是因为视差的存在,仍然会对台风预警的准确性产生影响。

关键词：静止轨道微波探测器视差