期刊文献+
共找到118,636篇文章
< 1 2 250 >
每页显示 20 50 100
Africa's Perspectives on China-Africa Relations and Forum on China-Africa Cooperation(FOCAC) 被引量:1
1
作者 Osita C.Eze 《国际展望》 2009年第2期48-61,132,共15页
China is in Africa in a vigorous way,and doing business in several countries like Sudan,Congo DRC,Angola,South Africa,and Nigeria.In the short term,the relationship may appear to be mutually beneficial.This paper seek... China is in Africa in a vigorous way,and doing business in several countries like Sudan,Congo DRC,Angola,South Africa,and Nigeria.In the short term,the relationship may appear to be mutually beneficial.This paper seeks to address the issue of Africa's perspectives on China-Africa Relations and the FOCAC and examine the concept of strategic partnerships,determine the state of China-Africa relations,examines FOCAC and draw conclusion as well as recommendation on possible ways and issues for future engageme... 展开更多
关键词 Africa’s Perspectives on china-africa relations and Forum on china-africa Cooperation FOCAC
下载PDF
New DevelopmenTrends of the China-Africa Relationship
2
作者 ZHOU LIN 《China Today》 2018年第9期28-30,共3页
THE scorching weather in Beijing could not deter a group of young Africans from visiting the myriad of high-tech companies scattered across the city’s Zhongguancun Science Park(Z-Park)in late June.Tese youth represen... THE scorching weather in Beijing could not deter a group of young Africans from visiting the myriad of high-tech companies scattered across the city’s Zhongguancun Science Park(Z-Park)in late June.Tese youth representatives from 53 African countries and the African Union(AU)are also members of the Forum on China-Africa Cooperation(FOCAC).Since its establishment in 2000,FOCAC has become a vital platform to coordinate and strengthen cooperation between China and African countries. 展开更多
关键词 New Development Trends the china-africa relationship
下载PDF
China-Africa Relations Shift
3
作者 Martyn Davies 《ChinAfrica》 2013年第5期22-23,共2页
PRESIDENT Xi Jinping's trip to Africa was as refreshing as it was reinforcing. Considering the significant effort and financial commitments of China's foreign policy toward Africa under Hu Jintao's administration, ... PRESIDENT Xi Jinping's trip to Africa was as refreshing as it was reinforcing. Considering the significant effort and financial commitments of China's foreign policy toward Africa under Hu Jintao's administration, there are concerns as to whether or not Beijing's generous policies will change with the new government. While there was less mention of sizeable multi-billion dollar deals during Xi's time in Africa, this probably reflects the China-Africa relationship as it matures. 展开更多
关键词 china-africa relations Shift
下载PDF
New AU HQ-A Tribute to China-Africa Relations
4
作者 Antoine Roger Lokongo 《ChinAfrica》 2012年第5期57-57,共1页
In her article Chika Ezeanya reckons that it is an insult to the AU and to every African that a building as symbolic as the AU headquarters (HQ) is designed, built and maintained by a foreign country [China].
关键词 New AU HQ-A Tribute to china-africa relations
下载PDF
People-to-People Cooperation: Foundation to Consolidate China-Africa Relations
5
作者 He Wenping Shi Dongme 《International Understanding》 2012年第3期6-9,共4页
The Fifth Ministerial Meeting of the Forum on China-Africa Cooperation was successfully held i Beijing from July 19th to 20th . At the meeting assessment was made on the follow-up actions since the Fourth Ministerial ... The Fifth Ministerial Meeting of the Forum on China-Africa Cooperation was successfully held i Beijing from July 19th to 20th . At the meeting assessment was made on the follow-up actions since the Fourth Ministerial Meeting of FOCAC. Beijing Declaration of the Fifth Ministerial Meeting of th Forum on China-Africa Cooperation and 展开更多
关键词 People-to-People Cooperation Foundation to Consolidate china-africa relationsr
下载PDF
A Cornerstone of China-Africa Relations-Financial Institutions
6
《ChinAfrica》 2018年第4期44-45,共2页
China was one of the countries that managed to largely defy the trend of economic collapse lollowing the 2008 financial crisis by boosting internal investment through its major financial institutions and state-owned e... China was one of the countries that managed to largely defy the trend of economic collapse lollowing the 2008 financial crisis by boosting internal investment through its major financial institutions and state-owned enterprises. 展开更多
关键词 A Cornerstone of china-africa relations-Financial Institutions
下载PDF
New Political Trends in Africa and the Impact on China-Africa Relations
7
作者 Li Wentao Sun Hong 《Contemporary International Relations》 2019年第1期13-27,共15页
During the past few years, African political development has demonstrated positive trends: democratic election practices and civilmilitary relations have become more rational; multi-party democracy has led to diversif... During the past few years, African political development has demonstrated positive trends: democratic election practices and civilmilitary relations have become more rational; multi-party democracy has led to diversified patterns, with Party-led administrations becoming a marked phenomenon in several countries; endogenous political values have become highlighted, and developmental state theory has surged,propelling reforms in governance models. African countries are eagerly exploring paths of development that are suited to their conditions, and pushing forward transformations in both the economy and governance. In the meantime, African countries remain vulnerable to the tumultuous external environment, and as such suffer from certain"growing pains"as part of this process. These trends will consolidate the strategic base of China-Africa cooperation. The prospects of a closer China-Africa community with a shared future are becoming more promising. 展开更多
关键词 AFRICAN POLITICS POLITICAL development Sino-Africa relations
下载PDF
Diplomatic Discourse Analysis:Translating and Reconstructing“Zhengqueyiliguan”in China-Africa Relations
8
作者 Queen Modestus 《Fudan Journal of the Humanities and Social Sciences》 2024年第2期361-381,共21页
China's diplomatic discourse is a complicated system underpinned by divergent translations.As such,the concept of"Zhengque Yi Li Guan"(ZhèngquèYìLìGuān in Pinyin),like numerous other... China's diplomatic discourse is a complicated system underpinned by divergent translations.As such,the concept of"Zhengque Yi Li Guan"(ZhèngquèYìLìGuān in Pinyin),like numerous other Chinese concepts,is not well appreciated.This could be due to the dearth of a uniform official translation and inconsistent interpretation.Therefore,this paper seeks to draw awareness to this vital issue that has been neglected in the China-Africa diplomatic discourse.As a way of filling this gap in the literature,the author argues that literal translation is not enough in diplomatic discourse.Searches of Chinese classical works from texts and dictionaries were carried out to identify the equivalent English words for"Zhengque,""Yi,""Li,"and"Guan."Based on the scope of this paper,emphasis will be placed on"Yi"because it plays a critical role in the"ZhèngquèYìLìGuān"concept and has been the term with the most controversial interpretation.The paper uses the critical discourse analysis(CDA)method as its theoretical framework.The author contends that"justice"(meaning impartiality)is a preferable translation for"Yi"while"interests"is fit for"Li."The article also suggests that"Yi"should be reconceptualized using three approaches:the strategic partnership approach,the international approach,and the regional approach,to represent the realities of current China-Africa relations. 展开更多
关键词 china-africa Diplomatic discourse Justice and interest Reconstructing discourse Translation Zhengqueyiliguan
原文传递
China-Africa Relations : Progress, Challenge, and Prospect
9
作者 Xiao Jia--ling 《Fudan Journal of the Humanities and Social Sciences》 2010年第1期55-89,共35页
Although being far apart geographically, China and Africa have kept friendly contacts since ancient times, enjoyed an increasing friendship since 1949, and benefited more from economic exchanges in recent decades. As ... Although being far apart geographically, China and Africa have kept friendly contacts since ancient times, enjoyed an increasing friendship since 1949, and benefited more from economic exchanges in recent decades. As the development of China-Africa relations carries significant implications for the interests of direct and indirect nations, as well as for the world, this paper, based on a brief retrospection, focuses on examining the recent progress and the challenges of China-Africa relations. The author argues that to reach a " harmonious all-win games" on the AfiScan continent, China first has to get a holistic, comprehensive, and objective picture of China-Africa relations under a multi--dimensional spectrum, and then do lots of concrete jobs. 展开更多
关键词 china-africa relations progress and challenge all-win games
原文传递
Tunable dispersion relations manipulated by strain in skyrmion-based magnonic crystals 被引量:1
10
作者 金兆年 何宣霖 +3 位作者 于超 方贺男 陈琳 陶志阔 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第1期692-696,共5页
We theoretically investigate the propagation characteristics of spin waves in skyrmion-based magnonic crystals. It is found that the dispersion relation can be manipulated by strains through magneto-elastic coupling. ... We theoretically investigate the propagation characteristics of spin waves in skyrmion-based magnonic crystals. It is found that the dispersion relation can be manipulated by strains through magneto-elastic coupling. Especially, the allowed bands and forbidden bands in dispersion relations shift to higher frequency with strain changing from compressive to tensile,while shifting to lower frequency with strain changing from tensile to compressive. We also confirm that the spin wave with specific frequency can pass the magnonic crystal or be blocked by tuning the strains. The result provides an advanced platform for studying the tunable skyrmion-based spin wave devices. 展开更多
关键词 SKYRMION magnonic crystal spin wave dispersion relation
下载PDF
Understanding the Relationship Between Shrinking Cities and Land Prices:Spatial Pattern,Effectiveness,and Policy Implications 被引量:1
11
作者 WANG Xiaohui PENG Li +1 位作者 HUANG Kexin DENG Wei 《Chinese Geographical Science》 SCIE CSCD 2024年第1期1-18,共18页
Urban shrinkage has emerged as a widespread phenomenon globally and has a significant impact on land,particularly in terms of land use and price.This study focuses on 2851 county-level cities in China in 2005–2018(ex... Urban shrinkage has emerged as a widespread phenomenon globally and has a significant impact on land,particularly in terms of land use and price.This study focuses on 2851 county-level cities in China in 2005–2018(excluding Hong Kong,Macao,Taiwan,and‘no data’areas in Qinhai-Tibet Plateau)as the fundamental units of analysis.By employing nighttime light(NTL)data to identify shrinking cities,the propensity score matching(PSM)model was used to quantitatively examine the impact of shrinking cities on land prices,and evaluate the magnitude of this influence.The findings demonstrate the following:1)there were 613 shrinking cities in China,with moderate shrinkage being the most prevalent and severe shrinkage being the least.2)Regional disparities are evident in the spatial distribution of shrinking cities,especially in areas with diverse terrain.3)The spatial pattern of land price exhibits a significant correlated to the economic and administrative levels.4)Shrinking cities significantly negatively impact on the overall land price(ATT=–0.1241,P<0.05).However,the extent of the effect varies significantly among different spatial regions.This study contributes novel insights into the investigation of land prices and shrinking cities,ultimately serving as a foundation for government efforts to promote the sustainable development of urban areas. 展开更多
关键词 shrinking cities land price propensity score matching(PSM) relative effectiveness China
下载PDF
Generating Sets of the Complete Semigroup of Binary Relations Defined by Semilattices of the Class Σ8(X, 5)
12
作者 Nino Tsinaridze 《Applied Mathematics》 2024年第2期169-197,共29页
In this article, we study generating sets of the complete semigroups of binary relations defined by X-semilattices of unions of the class Σ<sub>8</sub>(X, 5). Found uniquely irreducible generating set for... In this article, we study generating sets of the complete semigroups of binary relations defined by X-semilattices of unions of the class Σ<sub>8</sub>(X, 5). Found uniquely irreducible generating set for the given semigroups and when X is finite set formulas for calculating the number of elements in generating sets are derived. 展开更多
关键词 SEMIGROUP SEMILATTICE Binary relation
下载PDF
Dispersion Relations in Diffraction in Time
13
作者 Salvador Godoy Karen Villa 《Applied Mathematics》 2024年第7期464-468,共5页
In agreement with Titchmarsh’s theorem, we prove that dispersion relations are just the Fourier-transform of the identity, g(x′)=±Sgn(x′)g(x′), which defines the property of being a truncated functions at the... In agreement with Titchmarsh’s theorem, we prove that dispersion relations are just the Fourier-transform of the identity, g(x′)=±Sgn(x′)g(x′), which defines the property of being a truncated functions at the origin. On the other hand, we prove that the wave-function of a generalized diffraction in time problem is just the Fourier-transform of a truncated function. Consequently, the existence of dispersion relations for the diffraction in time wave-function follows. We derive these explicit dispersion relations. 展开更多
关键词 Diffraction in Time Dispersion relations Hilbert Transforms
下载PDF
The Impact of Adolescent and Young Adult Cancer-AJA-on Family Functioning.Study of Family Relationships in Terms of Adaptability and Cohesion
14
作者 Voskan Kirakosyan Manon Arnoult 《Psycho-Oncologie》 SCIE 2024年第4期337-347,共11页
Objectives:The arrival of cancer in adolescents and young adults(aged 15 to 24 years)-Adolescents and young adults(AJA)-corresponds to a fragile period during which the adulthood of the young person and the evolution ... Objectives:The arrival of cancer in adolescents and young adults(aged 15 to 24 years)-Adolescents and young adults(AJA)-corresponds to a fragile period during which the adulthood of the young person and the evolution of family ties mobilize the family as a whole.Therefore,cancer,beyond its individual traumatic dimension,affects the whole family,which can modify family ties and family functioning.Our objective is to evaluate family functioning from the complex model evaluating cohesion and adaptability when an adolescent or young adult has cancer.Methods:Adolescents and young adults with cancer(n=41),mothers(n=41),and fathers(n=13)participated in this study.They completed the Family Adaptation and Cohesion Scales(FACES Ⅲ)questionnaire.Family functioning when an aya is ill has been compared to that of families without any disease.Results:a comparison of the mean scores of perceived cohesion and adaptability of face Ⅲ indicates no significant difference for cohesion.In contrast,the averages of the adaptability scores of our sample with those of the general population indicate that families with cancer hais generally feel more“adaptable”than the non-clinical population.These results are statistically significant for AJA,but also for mothers and fathers.Regarding the mean scores of ideal cohesion and ideal adaptability,there are no significant differences between fathers in our sample and fathers in the general population.In contrast,mothers in our sample had less ideal adaptability than those in the general population.In aya patients with cancer,the scores of both adaptability and cohesion were significantly different from those of non-diseased adolescents.Conclusion:Cancer leads to many changes in family relationships,making it difficult to empower the young patient and latent the evolution of the relationship. 展开更多
关键词 Adolescent and young adult CANCER and family and family functioning family relations relations
下载PDF
Relationship of Ambient Humidity with Cardiovascular Diseases:A Prospective Study of 24,510 Adults in a General Population
15
作者 Congyi Zheng Jiamin Wu +12 位作者 Haosu Tang Xin Wang Ye Tian Xue Cao Yixin Tian Runqing Gu Yuxin Song Xuyan Pei Jiayuan Qiu Zujiao Nie Minmei He Gang Huang Zengwu Wang 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2024年第12期1352-1361,共10页
Objective This study aimed to explore the association between humidity exposure and the risk of cardiovascular disease(CVD),utilizing follow-up data and relative humidity(RH)metric assessments.Methods We extracted the... Objective This study aimed to explore the association between humidity exposure and the risk of cardiovascular disease(CVD),utilizing follow-up data and relative humidity(RH)metric assessments.Methods We extracted the baseline data from the China Hypertension Survey(CHS)of 24,510 enrolled participants aged≥35 years without a history of CVD between 2012 and 2015 and followed them up from 2018 to 2019.The National Meteorological Information Center(NMIC)of the China Meteorological Administration(CMA)provided the quality-controlled relative humidity(RH)datasets.Cox proportional hazards models were used to estimate hazard ratios(HRs)for CVD in relation to RH.Results During the follow-up period(2018-2019),973 patients with CVD were identified.The HR of CVD risk was 1.17(95%CI:1.04-1.31)per 10%increase in summer mean RH.Compared with participants in the 3rd quintile group,those in the 1st and 5th quintiles of RH had a higher risk of CVD.For summer mean RH,the HRs(95%CIs)for the 1st and 5th quintiles were 1.34(1.04-1.71)and 1.44(1.14-1.83),respectively.The relationship(“U”shape)between summer mean RH and the risk of CVD was nonlinear.Stratified analyses indicated that the risk of CVD was substantially influenced by the summer mean RH in female,older individuals,and those in southern China.Conclusion Unsuitable(too high or low)humidity environments affect the risk of CVD.Our study highlights those future policies for adapting to climate change should consider the humidity-CVD relationship. 展开更多
关键词 relative humidity Cardiovascular disease Risk factors Climate change
下载PDF
Enhancing Data Forwarding Efficiency in SIoT with Multidimensional Social Relations
16
作者 Fang Xu Songhao Jiang +3 位作者 Yi Ma Manzoor Ahmed Zenggang Xiong Yuanlin Lyu 《Computers, Materials & Continua》 SCIE EI 2024年第1期1095-1113,共19页
Effective data communication is a crucial aspect of the Social Internet of Things(SIoT)and continues to be a significant research focus.This paper proposes a data forwarding algorithm based on Multidimensional Social ... Effective data communication is a crucial aspect of the Social Internet of Things(SIoT)and continues to be a significant research focus.This paper proposes a data forwarding algorithm based on Multidimensional Social Relations(MSRR)in SIoT to solve this problem.The proposed algorithm separates message forwarding into intra-and cross-community forwarding by analyzing interest traits and social connections among nodes.Three new metrics are defined:the intensity of node social relationships,node activity,and community connectivity.Within the community,messages are sent by determining which node is most similar to the sender by weighing the strength of social connections and node activity.When a node performs cross-community forwarding,the message is forwarded to the most reasonable relay community by measuring the node activity and the connection between communities.The proposed algorithm was compared to three existing routing algorithms in simulation experiments.Results indicate that the proposed algorithmsubstantially improves message delivery efficiency while lessening network overhead and enhancing connectivity and coordination in the SIoT context. 展开更多
关键词 SIoT data forwarding social attributes social relations COMMUNITY
下载PDF
Defining the We-map Reference Frames and Providing Mathematical Expressions for Transformation Relations
17
作者 WANG Xiaolong YAN Haowen +2 位作者 WANG Zhuo MA Wenjun YU Yitao 《Journal of Geodesy and Geoinformation Science》 CSCD 2024年第3期76-88,共13页
We-map is an interactive mobile map that can be easily communicated and applied on personal electronic devices,such as personal computers and mobile phones.Therefore,the study of direction systems and coordinate syste... We-map is an interactive mobile map that can be easily communicated and applied on personal electronic devices,such as personal computers and mobile phones.Therefore,the study of direction systems and coordinate systems is critical,and exploring reference frames is essential in direction and coordinate systems.Despite its significance,existing research on We-map lacks specific solutions for the exploration of reference frames is indispensable for the establishment of accurate direction and coordinate systems.In this paper,we endeavor to address this gap by elucidating the significance of We-map reference frames,defining them with mathematical constraints,summarizing their nature and characteristics,deriving their transformation relationships and representing them through mathematical formulars and equations.Our work contributes to the fundamental theory of We-map and provides valuable systems and support for the mathematical foundation of We-map,map production,and platform development.Ultimately,this research serves to advance the development of We-map. 展开更多
关键词 We-map reference frames spatial direction relation coordinate system
下载PDF
Relational Turkish Text Classification Using Distant Supervised Entities and Relations
18
作者 Halil Ibrahim Okur Kadir Tohma Ahmet Sertbas 《Computers, Materials & Continua》 SCIE EI 2024年第5期2209-2228,共20页
Text classification,by automatically categorizing texts,is one of the foundational elements of natural language processing applications.This study investigates how text classification performance can be improved throu... Text classification,by automatically categorizing texts,is one of the foundational elements of natural language processing applications.This study investigates how text classification performance can be improved through the integration of entity-relation information obtained from the Wikidata(Wikipedia database)database and BERTbased pre-trained Named Entity Recognition(NER)models.Focusing on a significant challenge in the field of natural language processing(NLP),the research evaluates the potential of using entity and relational information to extract deeper meaning from texts.The adopted methodology encompasses a comprehensive approach that includes text preprocessing,entity detection,and the integration of relational information.Experiments conducted on text datasets in both Turkish and English assess the performance of various classification algorithms,such as Support Vector Machine,Logistic Regression,Deep Neural Network,and Convolutional Neural Network.The results indicate that the integration of entity-relation information can significantly enhance algorithmperformance in text classification tasks and offer new perspectives for information extraction and semantic analysis in NLP applications.Contributions of this work include the utilization of distant supervised entity-relation information in Turkish text classification,the development of a Turkish relational text classification approach,and the creation of a relational database.By demonstrating potential performance improvements through the integration of distant supervised entity-relation information into Turkish text classification,this research aims to support the effectiveness of text-based artificial intelligence(AI)tools.Additionally,it makes significant contributions to the development ofmultilingual text classification systems by adding deeper meaning to text content,thereby providing a valuable addition to current NLP studies and setting an important reference point for future research. 展开更多
关键词 Text classification relation extraction NER distant supervision deep learning machine learning
下载PDF
Explanation of Two Important Empirical Relations for Galaxies
19
作者 Yingqiu Gu 《Journal of Applied Mathematics and Physics》 2024年第1期284-304,共21页
The phenomenon of “missing mass” in galaxies has triggered new theoretical exploration, forming a competition between dark matter assumption, modified Newtonian dynamics and modified gravity. Over the past forty yea... The phenomenon of “missing mass” in galaxies has triggered new theoretical exploration, forming a competition between dark matter assumption, modified Newtonian dynamics and modified gravity. Over the past forty years, various versions of the modified scenario have been proposed to simulate the effects of missing mass. These schemes replace the dynamic effect of dark matter by introducing some tiny extra force terms in the dynamic equations. Such extra forces have mainly interactions on large scales of galaxies, such as fitting the Tully-Fisher relation or asymptotically flat rotation curves. The discussion in this paper shows that the evidence of taking the modified schemes as fundamental theory is still insufficient. In this paper, we display a system of simplified galactic dynamical equations derived from weak field and low-speed approximations of Einstein field equations, and then we use it to discuss two important empirical relations in galactic dynamics, namely the Faber-Jackson relation and Tully-Fisher relation, as well as the related fundamental plane. These discussions provide a reference scheme for improving the dispersion of the empirical relations, and also provide a theoretical foundation to analyze the properties of dark matter and galactic structures. 展开更多
关键词 Galactic Dynamics Faber-Jackson relation Tully-Fisher relation Dark Matter MOND
下载PDF
Iran-Turkmenistan Relations:Cross-Border Ethnic Groups and Comprehensive Governance Strategies
20
作者 WU Tongyu 《International Relations and Diplomacy》 2024年第5期181-190,共10页
This study delves into the bilateral relations between Iran and Turkmenistan,focusing on the multidimensional impacts of cross-border ethnic groups,cultural diplomacy,and energy cooperation.The research reveals that d... This study delves into the bilateral relations between Iran and Turkmenistan,focusing on the multidimensional impacts of cross-border ethnic groups,cultural diplomacy,and energy cooperation.The research reveals that despite challenges in security cooperation,such as regional political ideological differences and uneven power distribution,Iran has adopted diverse strategies to enhance cultural identity,social cohesion,and promote economic cooperation.Iran actively seeks to repair relations with Turkmenistan by emphasizing shared historical and cultural backgrounds,particularly the presence of cross-border Turkmen ethnic groups.Specific measures include developing cultural tourism,organizing cultural weeks,and establishing commemorative days.In the economic sphere,the two countries have signed significant natural gas supply agreements,strengthening energy cooperation.Iranian leaders often emphasize“blood ties”and deep cultural connections in diplomatic statements,combining cultural diplomacy with practical economic cooperation.The study’s findings indicate that Iran’s initiatives have led to the reorganization of national space and social reconstruction in border regions,promoting changes in public policy.By integrating cultural identity,historical connections,and economic interests,Iran has adopted a sophisticated diplomatic approach,laying the foundation for more stable and enduring bilateral relations while contributing to regional stability and sustainable development. 展开更多
关键词 Iranian foreign policy cross-border ethnic groups Iran-Turkmenistan relations
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部