This essay directs at the water imagery of two poems Happy Rain on a Spring Night and A Drop Fell on the Apple Tree.Although living in different time and place, Chinese poet Du Fu and American poetess Emily Dickinson ...This essay directs at the water imagery of two poems Happy Rain on a Spring Night and A Drop Fell on the Apple Tree.Although living in different time and place, Chinese poet Du Fu and American poetess Emily Dickinson share some deep understanding of the water. This secret of water imagery is unveiled in this essay with the help of Archetypal Criticism, revealing its significance to the human beings as a race.展开更多
[Objective] The research aimed to review the research progresses and the research achievements of plum rain in China.[Method] By using the precipitation,the sunshine data in the related observatories during 1961-2009 ...[Objective] The research aimed to review the research progresses and the research achievements of plum rain in China.[Method] By using the precipitation,the sunshine data in the related observatories during 1961-2009 and the daily height field data of NCEP/DOE2 in 1996,which were provided by the National Meteorological Information Center,the prior researches about the plum rain in China were reviewed from the division of plum rain,the range of plum rain area and the space distribution.[Result] The formulation of an objective,unified plum rain division standard needed the further research and discussion,which provided the basis for the determination of plum rain range in China.In the division of plum rain period,when the sunshine duration parameter was considered,the division of plum rain period could be more reliable.The climatic mean result showed that the plum rain phenomenon still existed in the southwest part of Hubei Province where was in the west of Yichang,and the plum rain range could extend westward a longitude.In the northwest part of the traditional plum rain area,the plum rain phenomenon wasn’t significant,and it didn’t belong to the plum rain range in China.Spring rain and the plum rain in central Hunan,central Jiangxi and central south of Zhejiang should be differentiated by the objective and unified plum rain standard.[Conclusion] Chinese scholars still had some controversies about the typing of plum rain in Jiang-Huai.The selections of suitable analytical method and region had the important effects on the plum rain typing.展开更多
The 9th Northeast Asian Youth Forum opened on July 22nd , 2012 at the International Youth Center in Seoul, Korea. Over 60 university students from China, Japan and Korea played leading roles on this 6-day forum. With ...The 9th Northeast Asian Youth Forum opened on July 22nd , 2012 at the International Youth Center in Seoul, Korea. Over 60 university students from China, Japan and Korea played leading roles on this 6-day forum. With the theme of "Nature and Youth Extra-curricular Activities", the Forum was designed and hosted by MAR/Initiatives展开更多
2020年超长梅雨期内的持续强降雨,导致安徽省发生全域性洪涝灾害,为了快速、准确地提取洪涝淹没范围,为防汛救灾提供科学支撑,选取安徽境内巢湖流域和淮河流域的灾前和灾中Sentinel-1A数据,首先,在快速预处理基础上,采用双极化水体指数(...2020年超长梅雨期内的持续强降雨,导致安徽省发生全域性洪涝灾害,为了快速、准确地提取洪涝淹没范围,为防汛救灾提供科学支撑,选取安徽境内巢湖流域和淮河流域的灾前和灾中Sentinel-1A数据,首先,在快速预处理基础上,采用双极化水体指数(Sentinel-1A dual-polarized water index,SDWI)法,并结合地形因子对平原和山区分别提取水体信息,建立一套洪水淹没区监测流程;然后通过该流程利用灾前、灾中两期合成孔径雷达数据提取2020年7月27日巢湖流域、淮河流域行蓄洪区洪水淹没范围。结果显示:SDWI比直接用后向散射系数提取水体具有优势;7月27日巢湖流域洪水淹没区面积为524.8 km^(2),其中受洪灾较重的是白石天河子流域,西河子流域次之;淮河流域安徽境内行蓄洪区,沿淮的4个地市淹没面积从大到小依次为淮南市、阜阳市、六安市、蚌埠市。研究表明,基于Sentinel-1A数据,采用SDWI和地形因子建立的洪水淹没区监测流程对平原和山区都具有较好的准确性、适用性,且具有较高的时效性,便于及时开展洪水灾害监测。展开更多
The underground utility tunnel(UUT)is one of the typical urban underground structures,which usually requires mechanical ventilation systems for forced ventilation.In addition to the ventilation scheme for accident sce...The underground utility tunnel(UUT)is one of the typical urban underground structures,which usually requires mechanical ventilation systems for forced ventilation.In addition to the ventilation scheme for accident scenarios,the normal operating ventilation scheme deserves equal attention as it has a great impact on the air quality as well as the thermal and humidity environment inside the UUT.In this study,a UUT located in southern China is taken as the research object,and the effect of ventilation on its internal thermal and humidity distribution is explored with a combined use of field measurements and numerical simulations.The results of field measurements show that the average temperature inside the closed UUT is 20.5℃and the average humidity ratio is 14.1 g/kgdry;both are lower than those of the external environment.In the plum rain season,if the tunnel is ventilated without any treatment of the external airflows,surface condensation tends to occur near the air inlet while the region with high relative humidity would be distributed on both sides far from the air inlet.The study also discusses the effect of different temperatures and humidity ratios of the inflow air on the humidity inside the UUT,and on this basis,the humidity control strategy for UUT in the plum rain season is proposed.展开更多
The Plum Rains Season(PRS)has the typical characteristics of outdoor air temperature dramatic changes and high air humidity in the hot summer and cold winter region in China.Even if the indoor heat source and moisture...The Plum Rains Season(PRS)has the typical characteristics of outdoor air temperature dramatic changes and high air humidity in the hot summer and cold winter region in China.Even if the indoor heat source and moisture production is constant,when the outdoor air temperature rises rapidly during high air humidity PRS,the build-ing envelope temperature heats up much more slower than the indoor air temperature and therefore the wall surface temperature is lower than the indoor air dewpoint which leads to condensation phenomenon,resulting in deterioration of insulation performance,mouldy walls,deterioration of indoor air quality.At present,there is a lack of research on the factors affecting condensation in rural residence during PRS.This paper evaluates the impact of occupants’habit of window opening modes and building construction parameters on the building envelope surface condensation in Changsha during PRS.Using Designer’Simulation Toolkit(DeST)simulated and analysed the impact of key parameters such as window-to-wall ratio,exterior wall reflectivity,window opening mode(open/close),and external wall insulation on the building indoor thermal and humid environment.The condensation risk X is proposed to evaluate the condensation possibility on the building envelope’s inner sur-face.The results show that from the perspective of anti-condensation:The rural residential building in Changsha should balance the window-wall ratio against better natural lighting;Keeping windows closed during PRS can effectively alleviate the condensation problem while the insulation in the external wall layer could aggravate the condensation.展开更多
文摘This essay directs at the water imagery of two poems Happy Rain on a Spring Night and A Drop Fell on the Apple Tree.Although living in different time and place, Chinese poet Du Fu and American poetess Emily Dickinson share some deep understanding of the water. This secret of water imagery is unveiled in this essay with the help of Archetypal Criticism, revealing its significance to the human beings as a race.
基金Supported by " Development of Subtropical Monsoon System Monitoring and Diagnosis Technology " of Cooperative Science and Research Item of Shanghai Meteorological Bureau and School in 2009
文摘[Objective] The research aimed to review the research progresses and the research achievements of plum rain in China.[Method] By using the precipitation,the sunshine data in the related observatories during 1961-2009 and the daily height field data of NCEP/DOE2 in 1996,which were provided by the National Meteorological Information Center,the prior researches about the plum rain in China were reviewed from the division of plum rain,the range of plum rain area and the space distribution.[Result] The formulation of an objective,unified plum rain division standard needed the further research and discussion,which provided the basis for the determination of plum rain range in China.In the division of plum rain period,when the sunshine duration parameter was considered,the division of plum rain period could be more reliable.The climatic mean result showed that the plum rain phenomenon still existed in the southwest part of Hubei Province where was in the west of Yichang,and the plum rain range could extend westward a longitude.In the northwest part of the traditional plum rain area,the plum rain phenomenon wasn’t significant,and it didn’t belong to the plum rain range in China.Spring rain and the plum rain in central Hunan,central Jiangxi and central south of Zhejiang should be differentiated by the objective and unified plum rain standard.[Conclusion] Chinese scholars still had some controversies about the typing of plum rain in Jiang-Huai.The selections of suitable analytical method and region had the important effects on the plum rain typing.
文摘The 9th Northeast Asian Youth Forum opened on July 22nd , 2012 at the International Youth Center in Seoul, Korea. Over 60 university students from China, Japan and Korea played leading roles on this 6-day forum. With the theme of "Nature and Youth Extra-curricular Activities", the Forum was designed and hosted by MAR/Initiatives
文摘2020年超长梅雨期内的持续强降雨,导致安徽省发生全域性洪涝灾害,为了快速、准确地提取洪涝淹没范围,为防汛救灾提供科学支撑,选取安徽境内巢湖流域和淮河流域的灾前和灾中Sentinel-1A数据,首先,在快速预处理基础上,采用双极化水体指数(Sentinel-1A dual-polarized water index,SDWI)法,并结合地形因子对平原和山区分别提取水体信息,建立一套洪水淹没区监测流程;然后通过该流程利用灾前、灾中两期合成孔径雷达数据提取2020年7月27日巢湖流域、淮河流域行蓄洪区洪水淹没范围。结果显示:SDWI比直接用后向散射系数提取水体具有优势;7月27日巢湖流域洪水淹没区面积为524.8 km^(2),其中受洪灾较重的是白石天河子流域,西河子流域次之;淮河流域安徽境内行蓄洪区,沿淮的4个地市淹没面积从大到小依次为淮南市、阜阳市、六安市、蚌埠市。研究表明,基于Sentinel-1A数据,采用SDWI和地形因子建立的洪水淹没区监测流程对平原和山区都具有较好的准确性、适用性,且具有较高的时效性,便于及时开展洪水灾害监测。
基金supported by the Sponsored Shanghai Rising-Star Program,China(Grant No.20QB1404900)the National Natural Science Foundation of China(Grant No.52078380)+3 种基金the Ministry of Science and Technology of China(Grant No.SLDRCE19-B-14)the National Key Research and Development Program of China(Grant Nos.2017YFC0805000 and 2016YFC0802400)the Construction Program of Shanghai Engineering Research Center,China(Grant No.17DZ2251800)which are gratefully acknowledged.
文摘The underground utility tunnel(UUT)is one of the typical urban underground structures,which usually requires mechanical ventilation systems for forced ventilation.In addition to the ventilation scheme for accident scenarios,the normal operating ventilation scheme deserves equal attention as it has a great impact on the air quality as well as the thermal and humidity environment inside the UUT.In this study,a UUT located in southern China is taken as the research object,and the effect of ventilation on its internal thermal and humidity distribution is explored with a combined use of field measurements and numerical simulations.The results of field measurements show that the average temperature inside the closed UUT is 20.5℃and the average humidity ratio is 14.1 g/kgdry;both are lower than those of the external environment.In the plum rain season,if the tunnel is ventilated without any treatment of the external airflows,surface condensation tends to occur near the air inlet while the region with high relative humidity would be distributed on both sides far from the air inlet.The study also discusses the effect of different temperatures and humidity ratios of the inflow air on the humidity inside the UUT,and on this basis,the humidity control strategy for UUT in the plum rain season is proposed.
基金This work was supported by Scientific Research Fund of Hunan Provincial Education Department[19A001]Natural Science Founda-tion of Hunan Province[2019JJ40303]+2 种基金National Natural Science Foun-dation of China(51806021)State Key Laboratory of Air-conditioning Equipment and System Energy Conservation[ACSKL2018KT18]and Double-First class International Collaboration Fund of Changsha Uni-versity of Science and Technology[2018IC16].
文摘The Plum Rains Season(PRS)has the typical characteristics of outdoor air temperature dramatic changes and high air humidity in the hot summer and cold winter region in China.Even if the indoor heat source and moisture production is constant,when the outdoor air temperature rises rapidly during high air humidity PRS,the build-ing envelope temperature heats up much more slower than the indoor air temperature and therefore the wall surface temperature is lower than the indoor air dewpoint which leads to condensation phenomenon,resulting in deterioration of insulation performance,mouldy walls,deterioration of indoor air quality.At present,there is a lack of research on the factors affecting condensation in rural residence during PRS.This paper evaluates the impact of occupants’habit of window opening modes and building construction parameters on the building envelope surface condensation in Changsha during PRS.Using Designer’Simulation Toolkit(DeST)simulated and analysed the impact of key parameters such as window-to-wall ratio,exterior wall reflectivity,window opening mode(open/close),and external wall insulation on the building indoor thermal and humid environment.The condensation risk X is proposed to evaluate the condensation possibility on the building envelope’s inner sur-face.The results show that from the perspective of anti-condensation:The rural residential building in Changsha should balance the window-wall ratio against better natural lighting;Keeping windows closed during PRS can effectively alleviate the condensation problem while the insulation in the external wall layer could aggravate the condensation.
