针对2013年1月23日辽宁灯塔M_(S)5.1地震,利用引潮力附加构造应力(Additional Tectonic Stress Caused By Tidal Force,ATSCTF)计算模型,计算得到震中位置(41.5°N,123.2°E)在地震前5周以及震后3周(2012年12月16日—2013年2月1...针对2013年1月23日辽宁灯塔M_(S)5.1地震,利用引潮力附加构造应力(Additional Tectonic Stress Caused By Tidal Force,ATSCTF)计算模型,计算得到震中位置(41.5°N,123.2°E)在地震前5周以及震后3周(2012年12月16日—2013年2月15日)的ATSCTF变化。地震发生时,ATSCTF垂直方向分量处于高相位点附近,显示引潮力对本次正断层走滑型地震具有诱发作用。以ATSCTF变化周期的各低相位点时间(2012年12月19日、2013年1月4日、2013年1月18日、2013年2月2日)数据分别为背景,各周期期后数据分别与背景逐日相减,计算研究区(36°N~46°N,118°E~128°E)范围内,National Oceanic and Atmospheric Administration(NOAA)卫星射出长波辐射数据(Outgoing Long Wave Radiation,OLR)在各ATSCTF周期时段分布及其变化。结果显示,无震的ATSCTF变化的A、B、D周期,震中附近OLR无变化;发震的ATSCTF变化的C周期,在空间上,该地区震前OLR仅震中及其南侧区域发生了显著连续升高变化过程,在时间上经历了初始微异常→异常加强→高峰→衰减→发震→平静的演化过程,与岩石应力加载—破裂经历:初始微动破裂→扩张破裂→应力闭锁→地震爆发→平静的力学演化过程中各阶段红外辐射特征一致;显示引潮力对处于临界状态的活动断层具有诱发作用,而OLR是地震构造应力应变过程辐射表征。展开更多
F_(10.7)指数是太阳活动的重要指标,准确预测F_(10.7)指数有助于预防和缓解太阳活动对无线电通信、导航和卫星通信等领域的影响.基于F_(10.7)射电流量的特性,在双向长短时记忆网络(Bidirectional Long Short-Term Memory Network,BiLSTM...F_(10.7)指数是太阳活动的重要指标,准确预测F_(10.7)指数有助于预防和缓解太阳活动对无线电通信、导航和卫星通信等领域的影响.基于F_(10.7)射电流量的特性,在双向长短时记忆网络(Bidirectional Long Short-Term Memory Network,BiLSTM)基础上融入注意力机制(Attention),提出了一种基于BiLSTM-Attention的F_(10.7)预报模型.在加拿大DRAO数据集上其平均绝对误差(MAE)为5.38,平均绝对百分比误差(MAPE)控制在5%以内,相关系数(R)高达0.987,与其他RNN模型相比拥有优越的预测性能.针对中国廊坊L&S望远镜观测的F_(10.7)数据集,提出了一种转换平均校准(Conversion Average Calibration,CAC)方法进行数据预处理,处理后的数据与DRAO数据集具有较高的相关性.基于该数据集对比分析了RNN系列模型的预报效果,实验结果表明,BiLSTM-Attention和BiLSTM两种模型在预测F_(10.7)指数方面具有较好的优势,表现出较好的预测性能和稳定性.展开更多
Long Day's Journey Into Night is considered one of the best drama Eugene O'Neill has ever written. It was published and staged posthumously as per the will of the playwright and won him a fourth Pulitzer Prize...Long Day's Journey Into Night is considered one of the best drama Eugene O'Neill has ever written. It was published and staged posthumously as per the will of the playwright and won him a fourth Pulitzer Prize. This paper tries to analyze this tragedy from conventional perspective of tragedies and concludes that the Tyrone family in the play serves as the protagonist and the play conforms to traditional structure of a tragedy,though no deaths and the like are found in the end.展开更多
The Interaction Hypothesis,which was first advanced by Michael Long,is considered as a further supplement or extension of the Input Hypothesis in the field of second language acquisition. This paper explains the main ...The Interaction Hypothesis,which was first advanced by Michael Long,is considered as a further supplement or extension of the Input Hypothesis in the field of second language acquisition. This paper explains the main claims of Michael Long's Interaction Hypothesis,the three steps to study how input and interaction affect the acquisition of a second language,and the importance of the interactional modifications applied by both participants of the interaction. Emphasis is placed on the evaluation of the theory as well as its relation to second language teaching,with many researchers' findings and arguments discussed as supporting evidence. It aims to help the effective application of this theory in second language teaching.展开更多
汽车路噪的分析与治理是NVH(Noise,Vibration And Harshness)工作的重要组成部分。由于路噪的产生机理复杂,建立机理模型较困难,故引入数据驱动方法对路噪进行研究。首先,对路噪影响因素进行剖析,界定出具有显著性的影响因素。在此基础...汽车路噪的分析与治理是NVH(Noise,Vibration And Harshness)工作的重要组成部分。由于路噪的产生机理复杂,建立机理模型较困难,故引入数据驱动方法对路噪进行研究。首先,对路噪影响因素进行剖析,界定出具有显著性的影响因素。在此基础上,运用长短时记忆神经网络算法(LSTM)揭示路噪与其影响因素间的复杂非线性关系,建立路噪预测模型。进而在粗糙沥青路面分别以40 km/h、60 km/h的车速工况采集悬架相关部件振动数据和驾驶员右耳畔噪声数据,以获得样本用于路噪模型的训练和检验。并采用Mixup数据增强策略合成新的样本,从而使样本量不足状况得到改善。进一步,对LSTM路噪预测模型进行检验与分析,测试结果均方误差为0.076 2,表明预测效果良好,证明所提方法的有效性。同时,将BPNN、SVR与LSTM预测方法进行比较,发现LSTM路噪预测模型精度更高,泛化能力更好,从而证明该方法的优越性。展开更多
Long Day' s Journey into Night is one of Eugene O' Neill' s (1888-1953) masterpieces, who is a great American playwright and called the father of modern American drama. This thesis aims at the analysis of ...Long Day' s Journey into Night is one of Eugene O' Neill' s (1888-1953) masterpieces, who is a great American playwright and called the father of modern American drama. This thesis aims at the analysis of the contradictions in family members in the play. The first part analyzes the contradictions between wife and husband. The second part focuses on the contradictory relationship in parents and sons. The contradictions between brothers are discussed in the third part. Through the study of the causes of the contradictory relationship among family members, the tragedy of the characters in the play will be explored to the readers, which is also the tragedy of modern Ameri can people.展开更多
1996,It was the first year of implementing China’s ninth"Five Year Plan".In that year,China’s foreigneconomy & trade policy had been greatly read-justed. Despite so many difficulties and new challenges...1996,It was the first year of implementing China’s ninth"Five Year Plan".In that year,China’s foreigneconomy & trade policy had been greatly read-justed. Despite so many difficulties and new challenges,GuangDong had taken a series of powerful measures on utilizingforeign capital and encouraging imports and exports.Export tradehad continuously increased, reform of enterprises had a greaterbreakthrough,The foreign capitals actually utilized had maintaineda good momentum of development.Looking back upon the passed year,the total annual importand export value of GuangDong had reached USD 110.04 bil-lion.of which the export amounted to USD 59.34 billion,whichis 37.9 percent of total annual Imp.& Exp.Value of the Country.Imports amounted $ 50.7 billion,foreign capital actually usedreached USD 13.9 billion, they were respectively up 5.8 percent,6.8 percent and 14 percent from the previous year.GuangDong’simports and exports emphasized efficient growth.It had展开更多
As Russia＇s ongoing economic restructuring over the past twenty years has revealed, Russia＇s exchange mechanism departs from that of an ideally standard market economy. To a large extent, the problem can be traced b...As Russia＇s ongoing economic restructuring over the past twenty years has revealed, Russia＇s exchange mechanism departs from that of an ideally standard market economy. To a large extent, the problem can be traced back to the ＂power-property＂ system established by Ivan IIL That is to say, the possession of power is equivalent to the possession of property, and property becomes certain functions of power. For a long time, this system has been accepted as a natural state of society by the Russian people. Rapid economic growth under the Putin administration is characterized by the return to and strengthening of a ＂power- property ＂system dominated by the state and an abandonment of ＂institutional transplantation＂ from the Western liberal market economic model in the Yeltsin era under which power and property were separated Mr. Putin＇s reelection in 2012 means that the ＂long-Putin era＂ that started from 2000 will last at least until 2018. However, with the solidification of the ＂power- property＂ system, the Putin administration has been confronted with new challenges, and the prospects for Russia＇s economic modernization still face great uncertainties.展开更多
Eugene O’Neill,one of the essential writers of the 20th century,was hailed as the“American Shakespeare.”He enjoyed a high reputation in America owing to his special writing techniques.Long Day’s Journey into Night...Eugene O’Neill,one of the essential writers of the 20th century,was hailed as the“American Shakespeare.”He enjoyed a high reputation in America owing to his special writing techniques.Long Day’s Journey into Night was his last play,which was an autobiographical play to some extent,and founded on his own authentic experience.The play told the story of an Irish immigrant family’s daily life from day to night.Among the studies at home and abroad,many discuss this play from a psychological perspective and Feminist perspective.The article,instead,gives an interpretation of this play according to Cooperative Principle.Through the analysis of their conversations,it points out what principles their communications violated so as to understand the implied meaning of their conversations.The thesis tries to study the conversations between Mary and other family members,and then demonstrate that Mary is the most tragic person in the family.展开更多
Forest biological disasters(FBD) seriously impact energy flow and material cycling in forest ecosystems,while the underlying causes of FBD are complex. These disasters involve large areas and cause tremendous losses. ...Forest biological disasters(FBD) seriously impact energy flow and material cycling in forest ecosystems,while the underlying causes of FBD are complex. These disasters involve large areas and cause tremendous losses. As a result,the occurrence of FBDs in China( CFBD) threatens the country's ability to realize its strategic target of increasing both forested area(40 million ha) and forest volume(1.3 billion m^3) from 2005 to 2020. Collectively,China has officially named this effort to increase forest area and volume the "Two Increases" as national goals related to forestry. Based on Hurst index analysis from fractal theory,we analyzed the time series of the occurrence area and related data of FBDs from 1950 to 2007 to quantitatively determine the patterns of the macro occurrence of FBDs in China. Results indicates that,the time series of( CFBD) areas is fractal( self-affinity fractal dimension D = 1. 3548),the fluctuation of( CFBD) areas is positively correlated( auto-correlation coefficient C = 0. 2170),and the occurrence of the time series of( CFBD) is long-range dependent( Hurst index H =0. 6416),showing considerably strong trend of increases in FBDC area. Three different methods were further carried out on the original time series,and its two surrogate series generated by function surrogate in library t series,and function Surrogate Data in library in Wavelet software R,so as to analyze the reliability of Hurst indexes. The results showed that the Hurst indices calculated using different estimation methods were greater than 0. 5,ranging from 0. 64 to 0. 97,which indicated that the change of occurrence area data of FBDs was positively autocorrelated.The long-range dependence in forest biological disasters in China is obvious,and the spatial extent of FBDs tended to increase during this study period indicating this trend should be expected to persistent and worsen in the future.展开更多
基金地震数值预测联合实验室开放基金项目(2020LNEF03)APSCO Earthquake Research Project PhaseⅡ:Integrating Satellite and Ground Observations for Earthquake Signatures and Precursors(WX0519502)。
文摘针对2013年1月23日辽宁灯塔M_(S)5.1地震,利用引潮力附加构造应力(Additional Tectonic Stress Caused By Tidal Force,ATSCTF)计算模型,计算得到震中位置(41.5°N,123.2°E)在地震前5周以及震后3周(2012年12月16日—2013年2月15日)的ATSCTF变化。地震发生时,ATSCTF垂直方向分量处于高相位点附近,显示引潮力对本次正断层走滑型地震具有诱发作用。以ATSCTF变化周期的各低相位点时间(2012年12月19日、2013年1月4日、2013年1月18日、2013年2月2日)数据分别为背景,各周期期后数据分别与背景逐日相减,计算研究区(36°N~46°N,118°E~128°E)范围内,National Oceanic and Atmospheric Administration(NOAA)卫星射出长波辐射数据(Outgoing Long Wave Radiation,OLR)在各ATSCTF周期时段分布及其变化。结果显示,无震的ATSCTF变化的A、B、D周期,震中附近OLR无变化;发震的ATSCTF变化的C周期,在空间上,该地区震前OLR仅震中及其南侧区域发生了显著连续升高变化过程,在时间上经历了初始微异常→异常加强→高峰→衰减→发震→平静的演化过程,与岩石应力加载—破裂经历:初始微动破裂→扩张破裂→应力闭锁→地震爆发→平静的力学演化过程中各阶段红外辐射特征一致;显示引潮力对处于临界状态的活动断层具有诱发作用,而OLR是地震构造应力应变过程辐射表征。
文摘F_(10.7)指数是太阳活动的重要指标,准确预测F_(10.7)指数有助于预防和缓解太阳活动对无线电通信、导航和卫星通信等领域的影响.基于F_(10.7)射电流量的特性,在双向长短时记忆网络(Bidirectional Long Short-Term Memory Network,BiLSTM)基础上融入注意力机制(Attention),提出了一种基于BiLSTM-Attention的F_(10.7)预报模型.在加拿大DRAO数据集上其平均绝对误差(MAE)为5.38,平均绝对百分比误差(MAPE)控制在5%以内,相关系数(R)高达0.987,与其他RNN模型相比拥有优越的预测性能.针对中国廊坊L&S望远镜观测的F_(10.7)数据集,提出了一种转换平均校准(Conversion Average Calibration,CAC)方法进行数据预处理,处理后的数据与DRAO数据集具有较高的相关性.基于该数据集对比分析了RNN系列模型的预报效果,实验结果表明,BiLSTM-Attention和BiLSTM两种模型在预测F_(10.7)指数方面具有较好的优势,表现出较好的预测性能和稳定性.
文摘Long Day's Journey Into Night is considered one of the best drama Eugene O'Neill has ever written. It was published and staged posthumously as per the will of the playwright and won him a fourth Pulitzer Prize. This paper tries to analyze this tragedy from conventional perspective of tragedies and concludes that the Tyrone family in the play serves as the protagonist and the play conforms to traditional structure of a tragedy,though no deaths and the like are found in the end.
文摘The Interaction Hypothesis,which was first advanced by Michael Long,is considered as a further supplement or extension of the Input Hypothesis in the field of second language acquisition. This paper explains the main claims of Michael Long's Interaction Hypothesis,the three steps to study how input and interaction affect the acquisition of a second language,and the importance of the interactional modifications applied by both participants of the interaction. Emphasis is placed on the evaluation of the theory as well as its relation to second language teaching,with many researchers' findings and arguments discussed as supporting evidence. It aims to help the effective application of this theory in second language teaching.
文摘Long Day' s Journey into Night is one of Eugene O' Neill' s (1888-1953) masterpieces, who is a great American playwright and called the father of modern American drama. This thesis aims at the analysis of the contradictions in family members in the play. The first part analyzes the contradictions between wife and husband. The second part focuses on the contradictory relationship in parents and sons. The contradictions between brothers are discussed in the third part. Through the study of the causes of the contradictory relationship among family members, the tragedy of the characters in the play will be explored to the readers, which is also the tragedy of modern Ameri can people.
文摘1996,It was the first year of implementing China’s ninth"Five Year Plan".In that year,China’s foreigneconomy & trade policy had been greatly read-justed. Despite so many difficulties and new challenges,GuangDong had taken a series of powerful measures on utilizingforeign capital and encouraging imports and exports.Export tradehad continuously increased, reform of enterprises had a greaterbreakthrough,The foreign capitals actually utilized had maintaineda good momentum of development.Looking back upon the passed year,the total annual importand export value of GuangDong had reached USD 110.04 bil-lion.of which the export amounted to USD 59.34 billion,whichis 37.9 percent of total annual Imp.& Exp.Value of the Country.Imports amounted $ 50.7 billion,foreign capital actually usedreached USD 13.9 billion, they were respectively up 5.8 percent,6.8 percent and 14 percent from the previous year.GuangDong’simports and exports emphasized efficient growth.It had
文摘As Russia＇s ongoing economic restructuring over the past twenty years has revealed, Russia＇s exchange mechanism departs from that of an ideally standard market economy. To a large extent, the problem can be traced back to the ＂power-property＂ system established by Ivan IIL That is to say, the possession of power is equivalent to the possession of property, and property becomes certain functions of power. For a long time, this system has been accepted as a natural state of society by the Russian people. Rapid economic growth under the Putin administration is characterized by the return to and strengthening of a ＂power- property ＂system dominated by the state and an abandonment of ＂institutional transplantation＂ from the Western liberal market economic model in the Yeltsin era under which power and property were separated Mr. Putin＇s reelection in 2012 means that the ＂long-Putin era＂ that started from 2000 will last at least until 2018. However, with the solidification of the ＂power- property＂ system, the Putin administration has been confronted with new challenges, and the prospects for Russia＇s economic modernization still face great uncertainties.
文摘Eugene O’Neill,one of the essential writers of the 20th century,was hailed as the“American Shakespeare.”He enjoyed a high reputation in America owing to his special writing techniques.Long Day’s Journey into Night was his last play,which was an autobiographical play to some extent,and founded on his own authentic experience.The play told the story of an Irish immigrant family’s daily life from day to night.Among the studies at home and abroad,many discuss this play from a psychological perspective and Feminist perspective.The article,instead,gives an interpretation of this play according to Cooperative Principle.Through the analysis of their conversations,it points out what principles their communications violated so as to understand the implied meaning of their conversations.The thesis tries to study the conversations between Mary and other family members,and then demonstrate that Mary is the most tragic person in the family.
基金Supported by the Project "Researches of Southern China’s Forestry Strategy"(2013-R17) and "Improvement of the Forest Resources Monitoring System of China"(2011-R03) Funded by the State Forestry Administration of China
文摘Forest biological disasters(FBD) seriously impact energy flow and material cycling in forest ecosystems,while the underlying causes of FBD are complex. These disasters involve large areas and cause tremendous losses. As a result,the occurrence of FBDs in China( CFBD) threatens the country's ability to realize its strategic target of increasing both forested area(40 million ha) and forest volume(1.3 billion m^3) from 2005 to 2020. Collectively,China has officially named this effort to increase forest area and volume the "Two Increases" as national goals related to forestry. Based on Hurst index analysis from fractal theory,we analyzed the time series of the occurrence area and related data of FBDs from 1950 to 2007 to quantitatively determine the patterns of the macro occurrence of FBDs in China. Results indicates that,the time series of( CFBD) areas is fractal( self-affinity fractal dimension D = 1. 3548),the fluctuation of( CFBD) areas is positively correlated( auto-correlation coefficient C = 0. 2170),and the occurrence of the time series of( CFBD) is long-range dependent( Hurst index H =0. 6416),showing considerably strong trend of increases in FBDC area. Three different methods were further carried out on the original time series,and its two surrogate series generated by function surrogate in library t series,and function Surrogate Data in library in Wavelet software R,so as to analyze the reliability of Hurst indexes. The results showed that the Hurst indices calculated using different estimation methods were greater than 0. 5,ranging from 0. 64 to 0. 97,which indicated that the change of occurrence area data of FBDs was positively autocorrelated.The long-range dependence in forest biological disasters in China is obvious,and the spatial extent of FBDs tended to increase during this study period indicating this trend should be expected to persistent and worsen in the future.
