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从美国EMPIRE软件看大型高功率脉冲电磁等离子体程序研发趋势
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作者 董志伟 董烨 +1 位作者 薛碧曦 周海京 《电波科学学报》 CSCD 北大核心 2024年第5期827-835,957,共10页
EMPIRE软件是美国针对下一代高性能计算平台开发的电磁等离子体模拟软件,可用于高置信度地开展高功率脉冲产生、传输以及与物质互作用的全过程模拟。解读EMPIRE软件的研制进展对发展大型高功率脉冲电磁等离子体软件具有重要借鉴意义。... EMPIRE软件是美国针对下一代高性能计算平台开发的电磁等离子体模拟软件,可用于高置信度地开展高功率脉冲产生、传输以及与物质互作用的全过程模拟。解读EMPIRE软件的研制进展对发展大型高功率脉冲电磁等离子体软件具有重要借鉴意义。首先分析了EMPIRE软件的架构及数学物理方案,然后着重讨论了其性能可移植性的软件特征和各子模块的算法特点,最后结合具体的应用案例展示了EMPIRE的强大计算能力。解读EMPIRE的启示包括如下几点:使用异构架构是实现未来E级(百亿亿次级)计算能力部署的关键点;研制灵活的功能模块,开展分层级的建模计算,最后拉通整个物理过程链条模拟,能够有效发挥装置指标的数值评估作用;多团队协作共同开发是丰富软件功能的基础;软件的置信度需要全方位的验证与确认。 展开更多
关键词 等离子体数值模拟 empire软件 高功率脉冲 粒子-流体混合模拟 性能可移植性
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EMPIRE计算30MeV以下^(238)U中子核反应数据
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作者 陈国长 曹文田 +1 位作者 唐国有 于保生 《原子能科学技术》 EI CAS CSCD 北大核心 2015年第3期385-393,共9页
为进一步完善核数据评价手段,本文将EMPIRE应用到中子引起锕系核素的核反应模型分析中,根据中子核反应机制的特点,选取恰当的核反应模型及模型参数,以实验数据为基础对模型参数进行调整,由EMPIRE计算获得30 MeV以下能区n+238 U的核反应... 为进一步完善核数据评价手段,本文将EMPIRE应用到中子引起锕系核素的核反应模型分析中,根据中子核反应机制的特点,选取恰当的核反应模型及模型参数,以实验数据为基础对模型参数进行调整,由EMPIRE计算获得30 MeV以下能区n+238 U的核反应数据。从计算结果与实验数据以及各评价库数据对比来看,EMPIRE可得到较合理的结果。 展开更多
关键词 empire 中子 截面 238U 核数据
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“MB”首冠!iG击败Empire获MAS总冠军
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作者 尼博 《电子竞技》 2015年第6期28-29,共2页
3月22日,Major All Stars总决赛在马来西亚首度吉隆坡落下帷幕,代表中国参赛的iG收获了最终冠军。值得一提的是,这也是B神加盟iG以来收获的首个线下赛冠军!MB组合线下首秀参加本次MAS总决赛的共有8支队伍,除了iG之外,还有Na’Vi、Empire... 3月22日,Major All Stars总决赛在马来西亚首度吉隆坡落下帷幕,代表中国参赛的iG收获了最终冠军。值得一提的是,这也是B神加盟iG以来收获的首个线下赛冠军!MB组合线下首秀参加本次MAS总决赛的共有8支队伍,除了iG之外,还有Na’Vi、Empire、Rave等世界一线队伍。在这些参赛队中,Na’Vi和Empire无疑是iG的最大对手。 展开更多
关键词 线下 总冠军 empire MAS MB IG MAJOR 修补匠 补刀 强冲
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History dynamics of unified empire in China(770 BC to 476 BC)
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作者 Peng Lu Mengdi Li +1 位作者 Jiawen Lu Zhuo Zhang 《CAAI Transactions on Intelligence Technology》 SCIE EI 2023年第3期880-892,共13页
The laws and regulations in human history can be revealed by computational models.From 221 before Christ(BC)to 1912 Anno Domini(AD),the unification pattern has dominated the main part of Chinese history for 2132 years... The laws and regulations in human history can be revealed by computational models.From 221 before Christ(BC)to 1912 Anno Domini(AD),the unification pattern has dominated the main part of Chinese history for 2132 years.Before the emergence of the first unified empire,the Qin Empire in 221 BC,there existed the Eastern Zhou dynasty(770 BC to 221 BC).This long dynasty has two stages,and here we focus on the first stage.This Spring-Autumn stage was from 770 BC(with 148 states)to 476 BC(with 32 states).The whole country(China)is modelled as a multi‐agent system,which contains multiple local states.They behave autonomously under certain action rules(wars and conflicts),which forms the main reason for the annexations and disappearance of most states.Key factors(power,loyalty,bellicosity and alliance)have been considered in our model settings,and simulation outcomes will be monitored and collected.Eventually,an optimal solution is obtained,which well unveils the internal mechanism and statistical features of real big history.Furthermore,counterfactuals are used to explore the non‐linear effects of the key factors,which deepens the authors’understanding of civilisa-tion evolutions in human history. 展开更多
关键词 civilization dynamics empire dynamics the great unity
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The Importance of Food Security from the Perspective of Food Issue of the Roman Empire
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作者 Lianjing MA Chenyu WANG 《Asian Agricultural Research》 2017年第9期77-80,共4页
This paper firstly introduced characteristics of the food production( or grain production) and regulation of the prosperous period of the Roman Empire. Then,it discussed the shortcomings and summarized the experience ... This paper firstly introduced characteristics of the food production( or grain production) and regulation of the prosperous period of the Roman Empire. Then,it discussed the shortcomings and summarized the experience and lessons. It is expected to provide some references for construction of China's food security. 展开更多
关键词 Roman empire Food security REGULATION RECOMMENDATIONS
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Book Review of The Medical Empire in 20th Century American Literature
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作者 JIANG Jian-song 《Journal of Literature and Art Studies》 2020年第11期989-991,共3页
As a book review of Medicine Empire in American Literature of the 20th Century by Jiang Tianping’s team, thispaper provides an examination of the developing process of the western medicine’s interaction with the imp... As a book review of Medicine Empire in American Literature of the 20th Century by Jiang Tianping’s team, thispaper provides an examination of the developing process of the western medicine’s interaction with the imperialpolitics in the 20th century. It points out that the book has made a great contribution to the interdisciplinary research,medical research, especially western colonialism research. 展开更多
关键词 American literature in the 20th century MEDICINE empire
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From Regional to Intercontinental Trade: The Successive European Trade Empires From the 16th to the 18thCentury in Asia
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作者 Sami Bensassi 《History Research》 2012年第6期355-367,共13页
For a very long time, the areas available for continuous long-distance trade were limited to territories of Braudel's Mediterrande (1949). Whatever the commercial organizations (merchants in the Roman or the Fatim... For a very long time, the areas available for continuous long-distance trade were limited to territories of Braudel's Mediterrande (1949). Whatever the commercial organizations (merchants in the Roman or the Fatimid Empires, the Hanseatic League, the Florentine Companies) were, their trade was not able to directly handle branches more than a month's sailing from their main base (in the best conditions). During the three centuries after Vasco de Gama had reached India, European trading areas dramatically expanded to the shores of Asia, and a long period of harsh competition set the East India Companies of the main European powers of the time against one another. What were the elements that allowed these companies to maintain transactions over such vast areas? And why were some of these companies far more successful than the others? A large set of secondary sources focusing on one company or on a particular aspect of trade (Chauduri, 1978; Israel, 1989; Subrahmanyan, 1993; Ames, 1996) exist, however, none of them treat their successive successes and failures. The aim of this paper is to briefly review these sources, to extract information from them and to compare the economic adaptations and innovations that allowed these companies to be the greatest of their time. 展开更多
关键词 European Trade empires Estado da India Dutch East India Company English East India Company
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值得期待之作EMPIRE EARTH
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作者 比卡超 《广东电脑与电讯》 2001年第1期111-111,共1页
由之前《Age of Empires》的前首席设计师 RickGoodman 所研制的《Empire Earth》,据市场消息称虽然游戏未到达完成阶段,但推出市场的时间约在今年的春季。相信不少读者都玩过《AOE》系列的游戏了,但《Empire Earth》这游戏的玩法会不... 由之前《Age of Empires》的前首席设计师 RickGoodman 所研制的《Empire Earth》,据市场消息称虽然游戏未到达完成阶段,但推出市场的时间约在今年的春季。相信不少读者都玩过《AOE》系列的游戏了,但《Empire Earth》这游戏的玩法会不会跟《AOE》系列的玩法差不多?如果你是这样想便错了! 展开更多
关键词 empire Earth》 电脑游戏 游戏介绍 操作方法
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The Rise of A Casual Wear Empire
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作者 Angel Feng 《China Textile》 2007年第8期10-11,共2页
In the year 1999,when the secretary of Shaxi town,Zhongshan,Guangdong planning the first China's Casual Wear Fair,"Casual Wear" hadn’t become a widly accepted conception yet. At the end of last century,... In the year 1999,when the secretary of Shaxi town,Zhongshan,Guangdong planning the first China's Casual Wear Fair,"Casual Wear" hadn’t become a widly accepted conception yet. At the end of last century,Chinese people,who have just come across with lots of new ideas and new fashions brought from outside world,didn’t realized that casual wear is one of the most important fashion elements in people's daily life. 展开更多
关键词 The Rise of A Casual Wear empire THAN
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China Telecom Forging An Empire of Comprehensive Information Services
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《中国电信业》 2006年第S1期18-,共1页
The transformation of China Telecom starts from late 2004. General Manager Wang Xiaochu put forward the strategy of transforming into a comprehensive information services provider soon after he took the post and defin... The transformation of China Telecom starts from late 2004. General Manager Wang Xiaochu put forward the strategy of transforming into a comprehensive information services provider soon after he took the post and defined transformation as the core mission in the next several years in 2005. 展开更多
关键词 PHS China Telecom Forging An empire of Comprehensive Information Services
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Coming up Roses An NPC deputy’s rose empire is helping lift farmers out of poverty in Sanya
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作者 Zeng Wenhui 《ChinAfrica》 2018年第4期18-19,共2页
The Chinese people are totally opposed to corruption. Establishing supervi sory commissions to perform duties in accordance with the Supervision Law will be the most effective way to fight corruption.
关键词 Coming up Roses An NPC deputy’s rose empire is helping lift farmers out of poverty in Sanya NPC
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A Probe into an Ancient Empire
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《China Today》 2000年第10期28-33,共6页
关键词 A Probe into an Ancient empire
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基于Empire CMS的文档资料管理平台
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作者 徐礼金 《长江信息通信》 2021年第1期159-161,共3页
为了解决学校师生查找相关文档资料的困难,有效解决学校师生收集相关文档资料的情况,通过开发一个在线文档资料管理平台,能够快速有效的解决学校师生在网上收集资料的难题,极大的提高了学校师生在工作和学习中查找相关文档资料的效率,... 为了解决学校师生查找相关文档资料的困难,有效解决学校师生收集相关文档资料的情况,通过开发一个在线文档资料管理平台,能够快速有效的解决学校师生在网上收集资料的难题,极大的提高了学校师生在工作和学习中查找相关文档资料的效率,为解决学校师生收集资料同时需要整合文档,平台还提供文本一键转换成DOC文档等功能。该平台解决了学校师生查找相关文档资料困难的难题,更提供了一键生成DOC文档的便捷功能,同时还支持学校师生在线分享文档即可获得相关收益的功能! 展开更多
关键词 empire CMS PHP 文档资料管理
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Vanished Empire
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作者 Sun Jiahui 《The World of Chinese》 2025年第3期72-77,共6页
Why China's Western Xia tombs were destroyed--and how historians and archaeologists are bringing them back to life。In the 1930s,German pilot Wulf-Diether Graf zu Castell-Rudenhausen captured a remarkable photogra... Why China's Western Xia tombs were destroyed--and how historians and archaeologists are bringing them back to life。In the 1930s,German pilot Wulf-Diether Graf zu Castell-Rudenhausen captured a remarkable photograph over the Helan Mountains in Ningxia,China:clusters of white conical earthen mounds rising from the desolate plain.Initially mistaking them for termite mounds,Castell-Rudenhausen published the image in his book Chinaflug,little expecting that what he had casually recorded was actually the royal necropolis of one of the most mysterious dynasties in Chinese history:the Xixia,or Western Xia. 展开更多
关键词 destroyed ARCHAEOLOGISTS bringing back life s termite moundscastell rudenhausen vanished empire western xia tombs historians
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The Self-Government of Greek Cities and the Local Administration of Parthian Empire
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作者 Shao Dalu 《World History Studies》 2024年第1期48-67,共20页
The Greek cities under Parthian rule inherited the legacy of local administration from the Seleucid Empire.Parthian King Mithridates I conquered the Mesopotamian region and the Iranian plateau.Due to factors such as o... The Greek cities under Parthian rule inherited the legacy of local administration from the Seleucid Empire.Parthian King Mithridates I conquered the Mesopotamian region and the Iranian plateau.Due to factors such as ongoing conquests and political instability,the Greek cities were granted a special autonomous status.After the death of the Parthian king Mithridates Il,the Parthian nobility gained too much power which weakened the central authority,and intense struggles emerged between the elites and the populace within the Greek cities.The Parthian kings began to strengthen their control over the Greek cities by granting the title of“philoi” to local elites,making them the royal agent,thus establishing a relationship of trust.By efectively utilizing the Greek cities'autonomous tradition,the Parthian kings were able to flexibly adjust their relationship to these cities,which proved to be an important approach in improving local governance effectiveness. 展开更多
关键词 Greek Cities Parthian empire Philoi ArtabanosⅡ
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From"Legal Pluralism"to"World Empire":Reading Jiang Shigong's The End of Civilizations and the World Empire
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作者 Yongle ZHANG Xu LI 《Journal of the Chinese Nation Studies》 2024年第2期169-176,共8页
From the perspective of long-term academic development and current practical significance,Jiang Shigong's The End of Civilizations and the World Empire is an important intellectual work.Jiang takes the legal pract... From the perspective of long-term academic development and current practical significance,Jiang Shigong's The End of Civilizations and the World Empire is an important intellectual work.Jiang takes the legal practice of the United States related to foreign countries as an entry point,and starts from how the specific operational mechanism of"extraterritorial jurisdiction"'embodies the United States'"rule of global legal empire,"and gradually rises to a theoretical discussion of"empire."Jiang uses the concept of"empire"in a neutral way,emphasizing the diversity within the empire and responding to Samuel Huntington's theory of"clash of civilizations"from the perspective of Quarrel of the Ancients and the Moderns."He points out that the clash of civilizations"that exists in reality is not a struggle between different regional civilizations,but rather the suppression of regional civilizations by the modern"world empire"'represented by the United States and the resistance of regional civilizations against the"world empire."Jiang argues that in the face of globalization,it is not feasible to fall back on regional civilizations.It is necessary for China to actively participate in the reform of global governance.In this process,China should pay attention to regional civilizations that resist the"world empire,"so as to expand the target of"Exchange and Mutual Learning between Civilizations,"while highlighting the reference significance of China's"civilization renewal"and"Chinese modernisation"for criticizing the hegemony of the"world empire."In addition,the fact that Jiang was able to break away from legal study in the narrow sense and proceed to this interdisciplinary and ambitious topic should be attributed to his previous attention to"legal pluralism"and his long-term study on the paradigm of"empire"vis-a-vis""nationstate."This academic background enabled him to delve into the critical work of the unipolar hegemony of the"world empire"and laid an important theoretical foundation for his later systematic study on the"community for the Chinese Nation." 展开更多
关键词 CIVILIZATION world empire legal pluralism
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Natural and human-induced decline and spatio-temporal differentiation of terrestrial water storage over the Lancang-Mekong River Basin 被引量:2
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作者 CHEN Junxu WANG Yuan +5 位作者 ZHAO Zhifang FAN Yunjiang LUO Xiaochuan YI Lu FENG Siqi YANG Liang Emlyn 《Journal of Geographical Sciences》 2025年第1期112-138,共27页
Due to water conflicts and allocation in the Lancang-Mekong River Basin(LMRB),the spatio-temporal differentiation of total water resources and the natural-human influence need to be clarified.This work investigated LM... Due to water conflicts and allocation in the Lancang-Mekong River Basin(LMRB),the spatio-temporal differentiation of total water resources and the natural-human influence need to be clarified.This work investigated LMRB's terrestrial water storage anomaly(TWSA)and its spatio-temporal dynamics during 2002–2020.Considering the effects of natural factors and human activities,the respective contributions of climate variability and human activities to terrestrial water storage change(TWSC)were separated.Results showed that:(1)LMRB's TWSA decreased by 0.3158 cm/a.(2)TWSA showed a gradual increase in distribution from southwest of MRB to middle LMRB and from northeast of LRB to middle LMRB.TWSA positively changed in Myanmar while slightly changed in Laos and China.It negatively changed in Vietnam,Thailand and Cambodia.(3)TWSA components decreased in a descending order of soil moisture,groundwater and precipitation.(4)Natural factors had a substantial and spatial differentiated influence on TWSA over the LMRB.(5)Climate variability contributed 79%of TWSC in the LMRB while human activities contributed 21%with an increasing impact after 2008.The TWSC of upstream basin countries was found to be controlled by climate variability while Vietnam and Cambodia's TWSC has been controlled by human activities since 2012. 展开更多
关键词 spatio-temporal variation contribution separation GRACE Empirical Orthogonal Function Lancang-Mekong River
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基于差分处理的EMD-LSTM短时空中交通流量预测
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作者 周睿 邱爽 +2 位作者 孟双杰 李明 张强 《科学技术与工程》 北大核心 2025年第2期842-849,共8页
随着中国民航的飞速发展,终端区空中交通流量与日俱增,短时空中交通流量预测对于精准实施空中交通流量管理具有重要意义。为提高短时空中交通流量预测的准确性,提出了基于数据差分处理(data differential processing)的经验模态分解(emp... 随着中国民航的飞速发展,终端区空中交通流量与日俱增,短时空中交通流量预测对于精准实施空中交通流量管理具有重要意义。为提高短时空中交通流量预测的准确性,提出了基于数据差分处理(data differential processing)的经验模态分解(empirical mode decomposition,EMD)和长短期记忆(long short-term memory,LSTM)相结合的短时空中交通流量预测模型。首先,该模型对短时空中交通流量序列进行经验模态分解;其次,为了提高预测精度,运用数据差分对时间序列进行平稳化处理;最后,将平稳处理后的序列分别输入LSTM网络模型进行预测,经过数据重构,得到最终的短时流量预测值。利用郑州新郑国际机场数据进行了实验验证,结果表明,该模型预测精度和拟合程度的典型指标RSME、MAE、R^(2)分别为0.29%,0.08%、96.40%,相较于其他方法,预测精度大幅度提高,可以为短时空中交通流量预测提供有益参考。 展开更多
关键词 空中交通流量管理 短时空中交通流量预测 经验模态分解(empirical mode decomposition EMD) 数据差分处理(data differential processing) 长短期记忆(long short-term memory LSTM)
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Simulating rise and fall cycles of Vietnam empires 被引量:1
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作者 Peng Lu Dianhan Chen Bo Li 《Fundamental Research》 CAS CSCD 2023年第3期442-458,共17页
The life cycle pattern of empires is pervasive worldwide,and this is caused by multiple factors.In the history of Vietnam,there are totally about ten empires or dynasties,which have aggregately lasted for more than on... The life cycle pattern of empires is pervasive worldwide,and this is caused by multiple factors.In the history of Vietnam,there are totally about ten empires or dynasties,which have aggregately lasted for more than one thousand years.Here,we apply the life cycle model and agent-based modeling to uncover the underlying mechanisms of the life cycle pattern for Vietnam empires.Macroscopically,the man-land relationship greatly shapes the life cycle pattern of traditional agricultural empires.The balancing process between land and population is critical for the empires.The relationship between incomes and costs has determined the actions or strategies of the social members or individuals.It suggests that our optimal solutions and simulations have perfectly matched the real history of Vietnam.Under three optimal solutions,the distributions of simulated and real empire durations in history can be well-matched,in terms of both discrete(histogram)and continuous forms(kernel density).It indicates that the history of human society is a dynamic process,which is determined by certain evolutionary rules and regulations.Therefore,we are able to back-calculate,simulate,and even predict the future of empires or countries. 展开更多
关键词 Life cycle model Rise and fall VIETNAM empires Agent-based model
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New quantitative characterizations of flow and heat transfer in hot dry rock fracture 被引量:1
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作者 Tiancheng Zhang Bing Bai +3 位作者 Hongwu Lei Yan Zou Lu Shi Huiling Ci 《Journal of Rock Mechanics and Geotechnical Engineering》 2025年第4期2181-2193,共13页
The overall heat transfer coefficient(OHTC)of rock fractures is a fundamental parameter for characterizing the heat transfer behavior of rock fractures in hot dry rock(HDR)geothermal mining.Although a number of practi... The overall heat transfer coefficient(OHTC)of rock fractures is a fundamental parameter for characterizing the heat transfer behavior of rock fractures in hot dry rock(HDR)geothermal mining.Although a number of practical formulae for heat transfer coefficients have been developed in the literature,there is still no widely accepted analytical solution.This paper constructs highly accurate analytical solutions for the temperatures of the inner fracture wall and the fluid.Then they are employed to develop new definition-based formulae(formula A and its simplification formula B)of the OHTC,which are well validated by the experimental and numerical simulation results.An empirical correlation formula of heat transfer coefficient is proposed based on the definition-based formulae which can be directly used in the numerical simulations of heat transfer in rock fractures.A site-scale application example of numerical simulation also demonstrates the effectiveness of the empirical correlation formula. 展开更多
关键词 Hot dry rock fractures Temperature distribution Convective heat transfer coefficient Empirical correlation formula
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