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微博客:图书馆的下一个网络新贵工具 被引量:119
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作者 李华 赵文伟 《图书与情报》 CSSCI 北大核心 2009年第4期78-82,共5页
微博客是结合了博客与即时信息的Web2.0的一种表现形式,用户可以不受限制的用手机、网络等各种途径来更新不超过200字符的博文。自从2006年创立以来,便受到了包括政要、明星等社会各界的青睐与关注,用户数量与访问量一路攀升,在政界、... 微博客是结合了博客与即时信息的Web2.0的一种表现形式,用户可以不受限制的用手机、网络等各种途径来更新不超过200字符的博文。自从2006年创立以来,便受到了包括政要、明星等社会各界的青睐与关注,用户数量与访问量一路攀升,在政界、企业、科技、新闻报道等多个领域开展了应用于发展,图书馆可以利用微博客开展互动的读者服务、信息传播、舆情监控、学术交流等工作,成为继博客等工具之后的下一个网络新贵工具。 展开更多
关键词 微博客 图书馆 工具 TWITTER 同学网
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QoS Adaptive Topology Configuration in Synchronous Wireless Sensor Networks 被引量:1
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作者 杨挺 武娇雯 +1 位作者 李昂 张志东 《Transactions of Tianjin University》 EI CAS 2010年第5期354-358,共5页
By using hyper-graph theory,this paper proposes a QoS adaptive topology configuration(QATC) algorithm to effectively control large-scale topology and achieve robust data transmitting in synchronous wireless sensor net... By using hyper-graph theory,this paper proposes a QoS adaptive topology configuration(QATC) algorithm to effectively control large-scale topology and achieve robust data transmitting in synchronous wireless sensor networks.Firstly,a concise hyper-graph model is abstracted to analyze the large-scale and high-connectivity network.Secondly,based on the control theory of biologic 'Cell Mergence',a novel self-adaptive topology configuration algorithm is used to build homologous perceptive data logic sub-network ... 展开更多
关键词 wireless sensor network QOS TOPOLOGY synchronous network
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A Quantitative and Network Approach to Alignment Effects in L2 Continuation Tasks 被引量:2
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作者 Heng CHEN 《Chinese Journal of Applied Linguistics》 2021年第3期399-416,432,共19页
The present study employed a quantitative and network approach to detect alignment effects in second language(L2) continuation tasks designed on the xu-argument(Wang, 2016). The materials used in this study were 6 sub... The present study employed a quantitative and network approach to detect alignment effects in second language(L2) continuation tasks designed on the xu-argument(Wang, 2016). The materials used in this study were 6 sub-corpora consisting of two selected input stories and two groups of L2 written production based on two continuation tasks. During continuation, the participants were required to continue in English a story with its ending removed, with one group reading and continuing the Chinese version and the other group the English version, and then switching their roles in the two tasks. Results show that the alignment effect differs across the two versions of continuation. Specifically, compared with the Chinese-version continuation, L2 learners produced more use of unigrams and bigrams similar to the input story in terms of lexical items, frequency and ranking correlations in the English-version task;on the other hand, the English-version continuation can facilitate generating linguistic networks that are much closer to the native English networks. Moreover, this research corroborates that written production in L2 continuation tasks can be influenced by input content. 展开更多
关键词 CONTINUATION alignment effect language network quantitative linguistics second language acquisition
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Homogeneity Analysis of Multiairport System Based on Airport Attributed Network Representation Learning 被引量:1
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作者 LIU Caihua CAI Rui +1 位作者 FENG Xia XU Tao 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2021年第4期616-624,共9页
The homogeneity analysis of multi-airport system can provide important decision-making support for the route layout and cooperative operation.Existing research seldom analyzes the homogeneity of multi-airport system f... The homogeneity analysis of multi-airport system can provide important decision-making support for the route layout and cooperative operation.Existing research seldom analyzes the homogeneity of multi-airport system from the perspective of route network analysis,and the attribute information of airport nodes in the airport route network is not appropriately integrated into the airport network.In order to solve this problem,a multi-airport system homogeneity analysis method based on airport attribute network representation learning is proposed.Firstly,the route network of a multi-airport system with attribute information is constructed.If there are flights between airports,an edge is added between airports,and regional attribute information is added for each airport node.Secondly,the airport attributes and the airport network vector are represented respectively.The airport attributes and the airport network vector are embedded into the unified airport representation vector space by the network representation learning method,and then the airport vector integrating the airport attributes and the airport network characteristics is obtained.By calculating the similarity of the airport vectors,it is convenient to calculate the degree of homogeneity between airports and the homogeneity of the multi-airport system.The experimental results on the Beijing-Tianjin-Hebei multi-airport system show that,compared with other existing algorithms,the homogeneity analysis method based on attributed network representation learning can get more consistent results with the current situation of Beijing-Tianjin-Hebei multi-airport system. 展开更多
关键词 air transportation multi-airport system homogeneity analysis network representation learning airport attribute network
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Synchronization in Complex Networks with Multiple Connections
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作者 吴庆初 傅新楚 孙伟刚 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第1期200-204,共5页
In this paper a class of networks with multiple connections are discussed. The multiple connections include two different types of links between nodes in complex networks. For this new model, we give a simple generati... In this paper a class of networks with multiple connections are discussed. The multiple connections include two different types of links between nodes in complex networks. For this new model, we give a simple generating procedure. Furthermore, we investigate dynamical synchronization behavior in a delayed two-layer network, giving corresponding theoretical analysis and numerical examples. 展开更多
关键词 complete synchronization two-layer network delayed feedback
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留学篇
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《成才与就业》 2005年第15期51-51,共1页
新西兰将大力发展与中国的教育科研合作新西兰总理海伦·克拉克曾在新西兰驻华使馆主持新西兰中国同学网成立仪式时说,新西兰十分重视发展与中国的教育和科技交流与合作,并希望吸引更多的优秀人才去新西兰进行研究和学习。克拉克说... 新西兰将大力发展与中国的教育科研合作新西兰总理海伦·克拉克曾在新西兰驻华使馆主持新西兰中国同学网成立仪式时说,新西兰十分重视发展与中国的教育和科技交流与合作,并希望吸引更多的优秀人才去新西兰进行研究和学习。克拉克说,新西兰政府在未来的5年内在国际教育方面将连续投入5000万美元。比如,从2006年1月起,攻读博士的留学生,只要其导师是新西兰的科研带头人,该生就有资格享受与本土学生同样的学费标准。新西兰每所大学的学费标准不同,但粗略计算,如果中国博士生享受本土学生的学费价格,那么一年就可节省学费大约8万元到10万元人民币。另外,新西兰政府还对这些留学生的配偶、子女在新西兰就业和学习方面提供很多优惠条件。 展开更多
关键词 学费标准 克拉克 新西兰 大洋洲 留学生 留学人员 同学网
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SYNCHRONOUS LEARNING NETWORK:HOW COLLEGE STUDENTS USE PEER ASSESSMENT TECHNIQUES IN EVALUATION OF THEIR WRITING
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作者 翁克山 李青 《Chinese Journal of Applied Linguistics》 2009年第6期52-64,129,共14页
This study investigated how students used peer assessments in synchronous learning network (SLN) to assess each other s writing. It focused on examining the frequency and styles of various techniques students employed... This study investigated how students used peer assessments in synchronous learning network (SLN) to assess each other s writing. It focused on examining the frequency and styles of various techniques students employed while assessing each others writing and student response to assessing each other s writing in a SLN context. The findings indicated that these students received many assessments during each peer assessment activity. They preferred to use assessing techniques of less critical types, and had po... 展开更多
关键词 peer assessment synchronous learning network online writing community
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EXPONENTIALLY ADAPTIVE SYNCHRONIZATION OF AN UNCERTAIN DELAYED DYNAMICAL NETWORK 被引量:3
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作者 Qunjiao ZHANG Jun'an LU 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2011年第2期207-217,共11页
Over the past decades, complex networks have been prosperous greatly in various fields of sciences and engineering. Much attention has been given to investigate the synchronization of complex networks in recent years.... Over the past decades, complex networks have been prosperous greatly in various fields of sciences and engineering. Much attention has been given to investigate the synchronization of complex networks in recent years. However, few work has done for the networks with uncertain parameters and unknown topology. In this paper, to further reveal the dynamical mechanism in complex networks with time delays, an uncertain general complex dynamical network with delayed nodes is studied. By constructing a drive network and a suitable slave network, several novel criteria for the networks consisting of the identical nodes and different nodes have been obtained based on the adaptive feedback method. Particularly, the hypotheses and the proposed adaptive laws for network synchronization are simple and can be readily applied in practical applications. Finally, numerical simulations are provided to illustrate the effectiveness of the proposed synchronization criteria. 展开更多
关键词 Adaptive feedback synchronization complex networks delayed nodes uncertain parameter unknown topology.
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Synchronization of switched Boolean networks with impulsive effects 被引量:2
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作者 Xiaojing Xu Yansheng Liu +1 位作者 Haitao Li Fuad E. Alsaadi 《International Journal of Biomathematics》 SCIE 2018年第6期93-110,共18页
This paper studies the state/output synchronization of switched Boolean networks (SBNs) with impulsive effects via the algebraic state space representation (ASSR) approach. First, an algebraic form is established ... This paper studies the state/output synchronization of switched Boolean networks (SBNs) with impulsive effects via the algebraic state space representation (ASSR) approach. First, an algebraic form is established for SBNs with impulsive effects via ASSR. Second, based on the algebraic form, some necessary and sufficient conditions are presented for the state/output synchronization of SBNs with impulsive effects under arbitrary switching signals. Third, two special kinds of switching signals, that is, free switching signal and feedback switching signal, are considered for the state synchroniza-tion of SBNs with impulsive effects. Finally, two illustrative examples are worked out to show the effectiveness of the obtained results. 展开更多
关键词 Switched Boolean network impulsive effects SYNCHRONIZATION algebraic state space representation.
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Finite-Time Generalized Outer Synchronization Between Two Different Complex Networks 被引量:4
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作者 孙永征 李望 阮炯 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第11期697-703,共7页
This paper investigates the finite-time generalized outer synchronization between two complex dynamical networks with different dynamical behaviors. The two networks can be undirected or directed, and they may also co... This paper investigates the finite-time generalized outer synchronization between two complex dynamical networks with different dynamical behaviors. The two networks can be undirected or directed, and they may also contain isolated nodes and clusters. By using suitable controllers, sufficient conditions for finite-time generalized outer synchronization are derived based on the finite-time stability theory. Finally, numerical examples are examined to illustrate the effectiveness of the analytical results. The effect of control parameters on the synchronization time is also numerically demonstrated. 展开更多
关键词 complex dynamical network finite-time synchronization
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