期刊文献+
共找到4,987篇文章
< 1 2 250 >
每页显示 20 50 100
Representation of the Image of Modern China in the Perspective of the Purpose of Peregrination in China
1
作者 LI Chaojun 《Journal of Landscape Research》 2023年第1期89-92,共4页
Since the middle and late 18th century,the purpose of western peregrinators to China had been in a gradual process from geological survey,to commercial route exploration,commercial development,and then the struggle to... Since the middle and late 18th century,the purpose of western peregrinators to China had been in a gradual process from geological survey,to commercial route exploration,commercial development,and then the struggle to divide power and sphere of influence.The purpose,mode,theme and narrative strategy of missionaries,scientific explorers,business travelers and pilgrims traveling in China were the main elements that affected the representation,construction and production of the image of modern China,as well as the main factors that formed the differentiation of the image of China. 展开更多
关键词 Peregrinator representation of image Image of china
下载PDF
Changes of China’s Status in the Global System and Its Influencing Factors:A Multiple Contact Networks Perspective
2
作者 LIU Jian LIU Jibin +2 位作者 YANG Qingshan CAI Sikai LIU Jie 《Chinese Geographical Science》 SCIE CSCD 2024年第2期265-279,共15页
Clarifying China’s position in the global system is an important logical basis for developing national diplomacy.Although much research has been done on China’s development status,most studies have been based on cou... Clarifying China’s position in the global system is an important logical basis for developing national diplomacy.Although much research has been done on China’s development status,most studies have been based on country comparisons or institutional en-vironment.In today’s networked era in which the global economy,trade,personnel,and information are closely connected,studies on China’s global position and its status changes and influencing factors in multiple contact networks are still insufficient.In this study,from the perspective of diverse global contact networks,we constructed economic,cultural,and political influence indices to explore the changes and influencing factors on China’s status in the global system from 2005 to 2018.The results show that during the study period,China’s global influence in the fields of economic ties,cultural exchanges,and political contacts increased significantly,but its influ-ence in the fields of cultural exchanges and political contacts lagged far economic ties.The pattern of China’s economic influence on various economies around the world has shown a transformation from an‘upright pyramid’to an‘inverted pyramid’structure.The proportion of these economies in low-influence zones has decreased from more than 60%in 2005 to less than 20%in 2018.China’s cultural and political influence on various economies around the world has increased significantly;however,for the former,the percentage of high-influence areas is still less than 20%,whereas for the latter the percentage of these economies in medium-and high-influence areas is still less than 50%.Analyses such as a scatter plot matrix show that geographical proximity,economic globalization,close cooperation with developing countries,and a proactive and peaceful foreign policy are important factors in improving China’s status in the diverse global network system. 展开更多
关键词 global system economic ties cultural exchanges political contacts multiple contact networks china’s status
下载PDF
Understanding the Global Identification with China’s Stories: A Cross-Cultural Perspective
3
作者 Fu Chun Deng Da 《Contemporary Social Sciences》 2024年第1期46-57,共12页
Cross-cultural storytelling is a primary way for humankind to seek mutual recognition of value orientations between cultures,which facilitates the ability to jointly address the problems of human existence in the cont... Cross-cultural storytelling is a primary way for humankind to seek mutual recognition of value orientations between cultures,which facilitates the ability to jointly address the problems of human existence in the context of globalization.In this study,we conducted an interview survey of 6,130 respondents who were college students or graduates from 107 countries.The results show that there were a number of cross-cultural values embodied in China’s stories seen by the respondents as part of a common vision for the future of humankind and widely identified guidance on collaborative responses to global challenges.These cross-cultural values are common prosperity,ecological harmony,individual-collective integration,the urgency of global peace,as well as respect for multicultural and indigenous development paths. 展开更多
关键词 china’s stories global identification cross-cultural communication
下载PDF
Spatio-temporal Variation Characteristics of Extreme Climate Events and Their Teleconnections to Large-scale Ocean-atmospheric Circulation Patterns in Huaihe River Basin,China During 1959–2019
4
作者 YAO Tian ZHAO Qiang +6 位作者 WU Chuanhao HU Xiaonong XIA Chuan'an WANG Xuan SANG Guoqiang LIU Jian WANG Haijun 《Chinese Geographical Science》 SCIE CSCD 2024年第1期118-134,共17页
Huaihe River Basin(HRB) is located in China’s north-south climatic transition zone,which is very sensitive to global climate change.Based on the daily maximum temperature,minimum temperature,and precipitation data of... Huaihe River Basin(HRB) is located in China’s north-south climatic transition zone,which is very sensitive to global climate change.Based on the daily maximum temperature,minimum temperature,and precipitation data of 40 meteorological stations and nine monthly large-scale ocean-atmospheric circulation indices data during 1959–2019,we present an assessment of the spatial and temporal variations of extreme temperature and precipitation events in the HRB using nine extreme climate indices,and analyze the teleconnection relationship between extreme climate indices and large-scale ocean-atmospheric circulation indices.The results show that warm extreme indices show a significant(P < 0.05) increasing trend,while cold extreme indices(except for cold spell duration) and diurnal temperature range(DTR) show a significant decreasing trend.Furthermore,all extreme temperature indices show significant mutations during 1959-2019.Spatially,a stronger warming trend occurs in eastern HRB than western HRB,while maximum 5-d precipitation(Rx5day) and rainstorm days(R25) show an increasing trend in the southern,central,and northwestern regions of HRB.Arctic oscillation(AO),Atlantic multidecadal oscillation(AMO),and East Atlantic/Western Russia(EA/WR) have a stronger correlation with extreme climate indices compared to other circulation indices.AO and AMO(EA/WR) exhibit a significant(P < 0.05) negative(positive)correlation with frost days and diurnal temperature range.Extreme warm events are strongly correlated with the variability of AMO and EA/WR in most parts of HRB,while extreme cold events are closely related to the variability of AO and AMO in eastern HRB.In contrast,AMO,AO,and EA/WR show limited impacts on extreme precipitation events in most parts of HRB. 展开更多
关键词 extreme climate indices sen’s slope variation mutation test atmospheric circulation indices Pearson’s correlation analysis Huaihe River Basin(HRB) china
下载PDF
Transitivity Analysis of the Energy in China’s New Era
5
作者 SHAN Ting WANG Yu 《Journal of Literature and Art Studies》 2024年第2期170-176,共7页
At present,with the steady development of the global economy,more and more countries begin to pay attention to the impact of ecological environment on economic development and human society,so the ecological environme... At present,with the steady development of the global economy,more and more countries begin to pay attention to the impact of ecological environment on economic development and human society,so the ecological environment has become a global issue that cannot be ignored in today’s era.Therefore,from the perspective of the ecological philosophy of Diversity&Harmony as well as Interaction&Co-existence,this paper will conduct ecological discourse analysis on the Energy in China’s New Era based on the transitivity system of systemic-functional grammar,and use the Corpus analysis software UAM Corpus Tool 3.3x to label and make statistics on the transitivity system,aiming to explore the distribution characteristics of the transitivity system in this white paper.Through the transitivity analysis of the white paper,this study helps readers to have a deeper understanding of the positive significance contained in the white paper.To a certain extent,it enables readers at home and abroad to understand China’s stance on energy issues and the positive image of China in energy ecology.It also awaken readers’awareness of environmental protection and acquire good habits of resource conservation to be in harmony between human and nature for sustainable development. 展开更多
关键词 TRANsITIVITY Ecological discourse analysis Energy in china’s new era
下载PDF
From the Green's Function in Tight-Binding Representation to Interatomic Many-body Potentials 被引量:1
6
作者 Shaojun LIU(Department of physics, Beijing Normal University, Beijing 100875, China)Xiaobo WEI(Department of Physics, Liuzhou College of Education, Liuzhou 545005, China)Zhaodou CHEN Jun CAI and Benkun MA(Department of Physics, Beijing Normal University, 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1999年第4期315-319,共5页
In this paper, we deduce the analytical form of many-body interatomic potentials based on the Green’s function in tight-binding representation. The many-body potentials are expressed as the functions of the hopping i... In this paper, we deduce the analytical form of many-body interatomic potentials based on the Green’s function in tight-binding representation. The many-body potentials are expressed as the functions of the hopping integrals which are the physical origin of cohesion of atoms. For thesimple case of s-valent system, the inversion of the many-body potentials are discussed in detail by using the lattice inversion method. 展开更多
关键词 REV Li Chen From the Green’s Function in Tight-Binding representation to Interatomic Many-body Potentials body
下载PDF
Kernel polynomial representation for imaginary-time Green's functions in continuous-time quantum Monte Carlo impurity solver 被引量:1
7
作者 黄理 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第11期418-423,共6页
Inspired by the recently proposed Legendre orthogonal polynomial representation for imaginary-time Green s functions G(τ),we develop an alternate and superior representation for G(τ) and implement it in the hybridiz... Inspired by the recently proposed Legendre orthogonal polynomial representation for imaginary-time Green s functions G(τ),we develop an alternate and superior representation for G(τ) and implement it in the hybridization expansion continuous-time quantum Monte Carlo impurity solver.This representation is based on the kernel polynomial method,which introduces some integral kernel functions to filter the numerical fluctuations caused by the explicit truncations of polynomial expansion series and can improve the computational precision significantly.As an illustration of the new representation,we re-examine the imaginary-time Green's functions of the single-band Hubbard model in the framework of dynamical mean-field theory.The calculated results suggest that with carefully chosen integral kernel functions,whether the system is metallic or insulating,the Gibbs oscillations found in the previous Legendre orthogonal polynomial representation have been vastly suppressed and remarkable corrections to the measured Green's functions have been obtained. 展开更多
关键词 kernel polynomial representation imaginary-time Green’s function continuous-time quantum Monte Carlo impurity solver dynamical mean-field theory
下载PDF
Counteraction to China?Impact of the U.S.International Development Finance Corporation on China’s Development Finance
8
作者 ZHOU Yiwen NIU Xinyi +1 位作者 NI Xintong XU Yue 《International Relations and Diplomacy》 2023年第4期161-170,共10页
The United States passed the Better Utilization of Investment Leading to Development(BUILD Act),as a counterweight to China’s overseas development activities.Under the Act,the US established a new federal agency,the ... The United States passed the Better Utilization of Investment Leading to Development(BUILD Act),as a counterweight to China’s overseas development activities.Under the Act,the US established a new federal agency,the U.S.International Development Finance Corporation(DFC),to enhance U.S.development financing capabilities.To better understand the impact of the DFC on China’s development finance,this article analyzes the DFC’s purpose,functions,structure,and funding.Then it focuses on the purpose of establishing the DFC,providing a preliminary analysis of the potential motivation for its establishment.It also compares the China Development Bank(CDB)and the DFC based on their focused sectors.Finally,through an in-depth analysis of financial frictions in China-U.S.relations,this article argues that the DFC competes with China’s overseas development financing activities in the context of broader strategic competition between China and the U.S. 展开更多
关键词 U.s.International Development Finance Corporation china Development Bank china’s development finance the Belt and Road Initiative(BRI) U.s.-china relations
下载PDF
东北地区土地覆被格局变化模拟:基于CLUE-S和Markov-CA模型的对比分析
9
作者 王端睿 毛德华 +2 位作者 王宗明 相恒星 冯凯东 《地理科学》 CSCD 北大核心 2024年第2期329-339,共11页
研究以遥感解译的东北地区2000年、2010年、2015年的土地覆被变化为基础,充分考虑自然和社会因素对土地覆被变化的影响,分别通过CLUE-S模型和Markov-CA模型对东北地区2015年和2030年土地覆被格局进行模拟,研究结果表明:通过与遥感解译的... 研究以遥感解译的东北地区2000年、2010年、2015年的土地覆被变化为基础,充分考虑自然和社会因素对土地覆被变化的影响,分别通过CLUE-S模型和Markov-CA模型对东北地区2015年和2030年土地覆被格局进行模拟,研究结果表明:通过与遥感解译的2015年实际土地覆被类型数据对比验证,CLUE-S模型和Markov-CA模型模拟结果的总体Kappa指数分别为0.9700和0.9649,结果表明2种模型的模拟结果较为理想,CLUE-S模型的模拟精度较Markov-CA模型更高。2015—2030年东北地区草地、耕地、湿地、其他用地和水体面积呈现下降趋势,林地、人工表面面积呈现增加趋势,人地关系越发紧张。东北地区作为生态环境相对脆弱的区域需警惕不可持续的土地覆被变化,需权衡生态保护、粮食增加与基础设施建设的用地需求和协调发展。 展开更多
关键词 CLUE-s模型 Markov-CA模型 土地利用/覆被变化 空间模拟 东北地区
下载PDF
A Comprehensive Bibliometric Analysis of China’s Free Trade Zones:Status and Evolutionary Trends
10
作者 HUANG Lixia XU Miaoling 《Chinese Business Review》 2023年第3期127-140,共14页
The China free trade zone,crucial for advancing a new open economy,has gained significant attention lately.We analyzed 885 papers from Peking University Core and CSSCI journals(2012-2023)using CiteSpace for visualizat... The China free trade zone,crucial for advancing a new open economy,has gained significant attention lately.We analyzed 885 papers from Peking University Core and CSSCI journals(2012-2023)using CiteSpace for visualization.Our research results indicate that the literature on China’s free trade zone peaked with 171 articles in 2015,and gradually returned to an average of 45 articles per year.The main research focuses in this field include“institutional innovation”,“negative list”,“financial innovation”,“financial openness”,“opening up to the outside world”,and“economic growth”.In addition,cutting-edge analysis indicates that“dual circulation”and“blockchain”are future research trends.The main authors of the literature include Yang Bin,Zhu Xiaolin,Yuan Bo,Li Meng,Zhao Liang,and others.Their affiliated institutions,research institutes,and universities have not yet formed a clear core circle of authors;The top three research institutions with the highest number of publications are the International Trade and Economic Cooperation Research Institute of the Ministry of Commerce,Kaiyuan Law School of Shanghai Jiao Tong University,and the Comprehensive Research Institute of the Free Trade Zone of Sun Yatsen University.This article delves into the current hot topics and progress in the research of China’s free trade zones,providing important references and inspirations for future scholars in this field. 展开更多
关键词 china’s free trade zone bibliometric analysis CITEsPACE
下载PDF
Mg/Ca,Ba/Ca,and S/Ca ratios as environmental and growth proxies for bivalve shells from the Haima cold seep,South China Sea
11
作者 Jingya CAO Shengxiong YANG +2 位作者 Danling TANG Junxi FENG Jinqiang LIANG 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2023年第2期660-672,共13页
Bivalve shell fossils,cemented by authigenic carbonates,are widely spread in the Haima cold seep,Qiongdongnan Basin of the South China Sea(SCS).In this study,we examined an element profile of Gigantidas platifrons in ... Bivalve shell fossils,cemented by authigenic carbonates,are widely spread in the Haima cold seep,Qiongdongnan Basin of the South China Sea(SCS).In this study,we examined an element profile of Gigantidas platifrons in the Haima cold seeps at a water depth of 1381 m.Based on the scanning electron microscope(SEM)analyses,the prismatic layer and nacreous layer were identified,which are characterized by prismatic structure and stratified structure,respectively.In addition,the profile can be subdivided into two parts:altered and unaltered zones.Laser inductively coupled plasma mass spectrometry(LA-ICP-MS)mapping shows that the element concentrations of the altered zones were influenced by the authigenic carbonate rocks,whereas the element concentrations of unaltered zones remain stable.In-situ X-ray diffraction(XRD)analyses show that the mineral constituent of the prismatic layer is mainly composed of aragonite.Along with the growth profile,Mg/Ca ratios of unaltered zones have minor variations,ranging 0.72-0.97 mmol/mol(mean=0.87 mmol/mol),with estimated temperatures of 3.8-4.1℃,indicating that the temperature of the surrounding seawater remains constant and agree with the measured data of 3.9℃which was conducted by a conductivity-temperature-depth system(CTD).The minor variations of Ba/Ca ratios(0.01-0.06 mmol/mol;mean=0.04 mmol/mol)indicate a relatively stabilized salinity of the surrounding seawater.S/Ca ratios show large variations of 0.04-4.15 mmol/mol(mean=1.37 mmol/mol).S/Ca ratios have regular variations which generally correspond to the variations of the Mg/Ca ratios,highlighting that the S/Ca ratios of bivalve shells show the potential to reflect the growth rate of the Gigantides.However,further studies should be carried out on the understanding of the links between the S/Ca ratios and seepage intensity of cold-seep fluids. 展开更多
关键词 Mg/Ca Ba/Ca and s/Ca ratios laser inductively coupled plasma mass spectrometry(LA-ICPMs) Gigantidas platifrons Haima cold seep south china sea
下载PDF
Human Rights in China:Exploration and Development of Whole-process People’s Democracy
12
作者 李君如 《The Journal of Human Rights》 2023年第4期709-721,共13页
Whole-process people’s democracy represents a new exploration of socialism with Chinese characteristics for a new era as well as a novel and important method for protecting the human rights of the Chinese people.It i... Whole-process people’s democracy represents a new exploration of socialism with Chinese characteristics for a new era as well as a novel and important method for protecting the human rights of the Chinese people.It is conducive to solving a multitude of problems hindering the protection of civil rights and political rights.The greatest highlight of whole-process people’s democracy is that the people are the masters of their own country and exercise the power to govern the state through“extensive participation and consultation.”China’s experience and approaches in advancing whole-process people’s democracy provide a reference for other countries. 展开更多
关键词 whole-process people’s democracy human rights in china the 20th National Congress of the Communist Party of china
下载PDF
Resolving the“Matteo Ricci Puzzle”:Top-Level Design of the Grand Canal of China Based on the Ternary Leadership Theory
13
作者 LI Jing TIAN Dexin 《Journalism and Mass Communication》 2023年第1期1-16,共16页
Guided by the ternary leadership theory from the perspective of social psychology,this paper explores the impacts of authoritarian,benevolent,and moral leadership on the top design of the Grand Canal of China in terms... Guided by the ternary leadership theory from the perspective of social psychology,this paper explores the impacts of authoritarian,benevolent,and moral leadership on the top design of the Grand Canal of China in terms of its water management practice,while providing reference for resolving the“Matteo Ricci Puzzle”.The research findings are threefold:first,authoritarian as it is,the central government of China formulates relevant laws and regulations to provide legal system insurance for the construction of the Grand Canal Cultural Belt,thus providing the blueprint for constructing the“bright cultural belt,green ecological belt and colorful tourism belt of the Grand Canal”.Second,led by the Central Government,sticking to benevolent and moral leadership,China advocates scientific water management concepts and methods,and gives long-term and comprehensive care to the well-being of the people along the banks of the Grand Canal.Finally,the top-level design of the Grand Canal of China is based on the ternary leadership theory rooted in social psychology and has formulated a set of properly-scheduled,reasonably-coordinated,and flexibly-operated management system for the fundamental interests of the people and long-term goals of the country. 展开更多
关键词 social psychology ternary leadership theory top design management of the Grand Canal of china Matteo Ricci’s puzzle
下载PDF
Constructing China’s Human Rights Science:Cause,Cognition,and Paradigm
14
作者 鲁广锦 QIAN Chuijun 《The Journal of Human Rights》 2023年第3期473-492,共20页
“China’s Human Rights Science”is undoubtedly a brand-new concept.Just as China has its own philosophy,literature,history,law,political science,and sociology,it should also have its own human rights science.China’s... “China’s Human Rights Science”is undoubtedly a brand-new concept.Just as China has its own philosophy,literature,history,law,political science,and sociology,it should also have its own human rights science.China’s Human Rights Science refers to the cognitive science of human rights in China.Developing its disciplinary system,academic system,and discourse system,and constructing an independent Chinese human rights knowledge system,are essential requirements for promoting the great rejuvenation of the Chinese nation through Chinese modernization and creating a new form of human civilization.China’s Human Rights Science originated in China,grew in China,and deepened through China’s human rights practices.China’s Human Rights Science adhere to the universality of human rights principles and possess distinctive characteristics.It works as the knowledge-based organization,academic refinement,and theoretical expression of the path of human rights development that conforms to the trend of the times and suits China’s national conditions,as pursued by the Communist Party of China in leading the people.China’s Human Rights Science can enrich and develop the theory of human rights civilization,and should become a global public product of human rights. 展开更多
关键词 china’s Human Rights science independent human rights knowledge system Chinese modernization a new form of human rights civilization
下载PDF
The Dilemma and Way Out of China’s Participation in the Development of Marine Genetic Resources in ABNJ from the Perspective of BBNJ
15
作者 Qu Yanan Zhang Zixuan 《Journal of Shipping and Ocean Engineering》 2023年第1期1-9,共9页
The fifth intergovernmental negotiations on marine BBNJ(Biodiversity beyond Areas of National Jurisdiction)concluded in August 2022,in which there are still major differences regarding access to marine genetic resourc... The fifth intergovernmental negotiations on marine BBNJ(Biodiversity beyond Areas of National Jurisdiction)concluded in August 2022,in which there are still major differences regarding access to marine genetic resources,management,and technology transfer.China’s participation in the development of marine genetic resources in ABNJ(areas beyond national jurisdiction)has many dilemmas,which are linked to the difficulties faced in advancing the BBNJ negotiations.The following countermeasures are proposed at the institutional and practical levels respectively:clarifying the legal attributes and applicability of the principles of marine genetic resources;establishing mechanisms for access,management,environmental impact assessment and benefit sharing of marine genetic resources;and using the“Blue Partnership”to build a governance mechanism for marine genetic resources to achieve mutual benefits. 展开更多
关键词 Marine genetic resources ABNJ BBNJ perspective china’s response
下载PDF
Majorana stellar representation for mixed-spin (s, 1/2) systems
16
作者 苏玉国 姚飞 +3 位作者 梁宏宾 车彦明 傅立斌 王晓光 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第3期168-175,共8页
By describing the evolution of a quantum state with the trajectories of the Majorana stars on a Bloch sphere,Majorana’s stellar representation provides an intuitive geometric perspective to comprehend the quantum sys... By describing the evolution of a quantum state with the trajectories of the Majorana stars on a Bloch sphere,Majorana’s stellar representation provides an intuitive geometric perspective to comprehend the quantum system with highdimensional Hilbert space.However,the representation of a two-spin coupling system on a Bloch sphere has not been solved satisfactorily yet.Here,a practical method is presented to resolve the problem for the mixed-spin(s,1/2)system and describe the entanglement of the system.The system can be decomposed into two spins:spin-(s+1/2)and spin-(s−1/2)at the coupling bases,which can be regarded as independent spins.Besides,any pure state may be written as a superposition of two orthonormal states with one spin-(s+1/2)state and the other spin-(s−1/2)state.Thus,the whole initial state can be regarded as a state of a pseudo spin-1/2.In this way,the mixed spin decomposes into three spins.Therefore,the state can be represented by(2s+1)+(2s−1)+1=4s+1 sets of stars on a Bloch sphere.Finally,some examples are given to show symmetric patterns on the Bloch sphere and unveil the properties of the high-spin system by analyzing the trajectories of the Majorana stars on the Bloch sphere. 展开更多
关键词 Majorana’s stellar representation Bloch sphere high-dimensional projective Hilbert space mixedspin
下载PDF
Tensor Product of Krammer’s Representations of the P<sub>3</sub>
17
作者 Hassan A. Tarraf Mohammad N. Abdulrahim 《Advances in Pure Mathematics》 2012年第3期190-194,共5页
We consider the complex specializations of Krammer’s representation of the pure braid group on three strings, namely K(q,t), where q and t are non-zero complex numbers. We then specialize the indeterminate t by one a... We consider the complex specializations of Krammer’s representation of the pure braid group on three strings, namely K(q,t), where q and t are non-zero complex numbers. We then specialize the indeterminate t by one and replace by for simplicity. Then we present our main theorem that gives us sufficient conditions that guarantee the irreducibility of the tensor product of two irreducible complex specializations of Krammer’s repre- sentations . 展开更多
关键词 BRAID GROUP Pure BRAID GROUP Magnus representation Krammer’s representation
下载PDF
基于S-XGBoost融合模型的中国进境快件风险水平评价研究
18
作者 刘昌伟 谢晶 +2 位作者 邹廉青 梅云鹏 Kashif Abbass 《海关与经贸研究》 2024年第1期48-61,共14页
党的二十大报告指出要增强维护国家安全能力,推进国家安全体系和能力现代化,坚决维护国家安全和社会稳定。随着互联网产业的发展壮大,以进境快件为代表的跨境个人消费进入发展的快车道,随之而来的安全准入风险也越来越高。为深入推进智... 党的二十大报告指出要增强维护国家安全能力,推进国家安全体系和能力现代化,坚决维护国家安全和社会稳定。随着互联网产业的发展壮大,以进境快件为代表的跨境个人消费进入发展的快车道,随之而来的安全准入风险也越来越高。为深入推进智慧海关建设,进一步提升进境快件风险防控能力,文章分析了现行监管模式下进境快件存在的问题,运用XGBoost算法和SMOTE技术构建了S-XGBoost进境快件风险评估模型,并对历史通关数据进行了仿真布控和评估。研究结果表明本文提出的S-XGBoost算法模型具有较好的预测效果,风险预测准确率达到了99.06%,能够为海关工作人员提升进境快件布控有效率提出切实参考建议。 展开更多
关键词 数据挖掘 中国进境快件 s-XGBoost 风险水平
下载PDF
Feminine Writings:Between Representations of Past and Present Femininity
19
作者 Priscila Kaufmann Correa 《Psychology Research》 2018年第7期322-334,共13页
The writers of this study are the Countess de Ségur,Louisa May Alcott and Maria Clarice Marinho Villac,from France,the United States and Brazil,respectively.It’s possible to identify a connection in their life t... The writers of this study are the Countess de Ségur,Louisa May Alcott and Maria Clarice Marinho Villac,from France,the United States and Brazil,respectively.It’s possible to identify a connection in their life trajectories―aristocratic and bourgeois families―and the ability to write their books.These publications address a specific audience,composed of children and young people,especially females.The representation of femininity in the narratives is related to the representation of family and religiosity,since it is up to the family to guide the girls in moral terms and this question is quite highlighted by religion.Analyzing the representation of femininity is due to the fact that the main books of female writers bring female protagonists,who exhibit a rebellious and mischievous behavior,which is observed and guided by adults.The representations of femininity is still valued and legitimized.For this reason,the narratives continue to be published and adapted to other languages,bringing to light these representations that remain until the 21st century in new clothing and updated vocabulary.Some adaptations for the Portuguese will also be analyzed,trying to identify longevity the works of these writers and their meaning in some epochs. 展开更多
关键词 feminine writings children’s literature representations of femininity CHILDHOOD family education RELIGION
下载PDF
A State Leader,an Economist and a People's Representative——An exclusive interview with Mr. Cheng Siwei,former Vice-Chairman of the National People's Congress (NPC) and President of the Central Committee of the China National Democratic Construction Asso
20
作者 张翼 《China Economist》 2008年第3期5-10,共6页
In the midst of a stock frenzy in China and tight monetary policy carried out by the Chinese government, what knowledge can we glean from a respected state leader, an economist and a people representative?
关键词 A state Leader an Economist and a People’s representative An exclusive interview with Mr Cheng siwei former Vice-Chairman of the National People’s Congress and President of the Central Committee of the china National Democratic Construction Asso NPC
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部