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Cookie:WWW上Server端与Client端信息交互渠道 被引量:1
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作者 粟虹 陈松乔 《计算机应用》 CSCD 1998年第3期34-36,共3页
本文概要介绍了cookie运行机制,网上应用及安全性有关问题,并举出了一Web站点通过cookie技术对页面访问进行控制的应用简化实例。
关键词 COOKIE Server端 Client端 WWW 信息互交渠道
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交互式多媒体教学模式在职教计算机教学中的应用 被引量:3
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作者 胡阳平 《科技信息》 2009年第17期198-198,共1页
现代信息技术的高速发展,使得多媒体辅助教学得到了极大的推广。本文结合职业教育的特点,分析交互式多媒体教学的建设与应用,探讨了在计算机教学中的常见问题及相应的管理方法。
关键词 多媒体 信息互交 职业教育 计算机网络
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Adaptive topology learning of camera network across non-overlapping views
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作者 杨彪 林国余 张为公 《Journal of Southeast University(English Edition)》 EI CAS 2015年第1期61-66,共6页
An adaptive topology learning approach is proposed to learn the topology of a practical camera network in an unsupervised way. The nodes are modeled by the Gaussian mixture model. The connectivity between nodes is jud... An adaptive topology learning approach is proposed to learn the topology of a practical camera network in an unsupervised way. The nodes are modeled by the Gaussian mixture model. The connectivity between nodes is judged by their cross-correlation function, which is also used to calculate their transition time distribution. The mutual information of the connected node pair is employed for transition probability calculation. A false link eliminating approach is proposed, along with a topology updating strategy to improve the learned topology. A real monitoring system with five disjoint cameras is built for experiments. Comparative results with traditional methods show that the proposed method is more accurate in topology learning and is more robust to environmental changes. 展开更多
关键词 non-overlapping views mutual information Gaussian mixture model adaptive topology learning cross-correlation function
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Quantum Information Splitting Based on Current Cavity QED Techniques 被引量:3
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作者 WU Huai-Zhi YANG Zhen-Biao SU Wan-Jun ZHONG Zhi-Rong HUANG Jian-Min 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第5期1165-1168,共4页
We propose two schemes for quantum information splitting via W-class state. The first scheme is based on the interaction of single atom with single-mode field, while the second scheme is based on the simultaneous inte... We propose two schemes for quantum information splitting via W-class state. The first scheme is based on the interaction of single atom with single-mode field, while the second scheme is based on the simultaneous interaction of two atoms with single-mode cavity. For the first scheme, the difIiculty of two atoms required to be simultaneously sent through one cavity is avoid. For the second scheme, it is immune to thermal field. Both schemes are experimentally feasible based on current cavity QED techniques. 展开更多
关键词 resonant interaction thermal field information splitting
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Integration of Soil Information System and Interactive Self-Organizing Data for Agricultural Developing Zones in Red Soil Region 被引量:3
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作者 SHI ZHOU WANG RENCHAO and M. AL-ABED (Institute of Agricultural Remote Sensing and Information System, Zhejiang Agricultural University, Hangzhou 31029, China) 《Pedosphere》 SCIE CAS CSCD 1999年第1期61-68,共8页
Integration of soil information system (SIS) and interactive self-organizing data (ISODATA) was studied to establish proper agricultural developing zones in red soil region of southern China which are of crucial impor... Integration of soil information system (SIS) and interactive self-organizing data (ISODATA) was studied to establish proper agricultural developing zones in red soil region of southern China which are of crucial importance to farmers, researchers, and decision makers while utilizing and managing red soil resources. SIS created by using ARC/INPO was used to provide data acquisition, systematic model parameter assignment, and visual display of analytic results. Topography, temperature, soil component (e.g., organic matter and pH) and condition of agricultural production were selected as parameters of ISODATA model. Taking Longyou County, Zhejiang Province as the case study area, the effect of the integration and recommendations are discussed for future research. 展开更多
关键词 agricultural developing zonest interactive self-organizing data red soil resources soil information system
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RESEARCH OF PINYIN-TO-CHARACTER CONVERSION BASED ON MAXIMUM ENTROPY MODEL 被引量:1
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作者 Zhao Yan Wang Xiaolong Liu Bingquan Guan Yi 《Journal of Electronics(China)》 2006年第6期864-869,共6页
This paper applied Maximum Entropy (ME) model to Pinyin-To-Character (PTC) conversion in-stead of Hidden Markov Model (HMM) that could not include complicated and long-distance lexical informa-tion. Two ME models were... This paper applied Maximum Entropy (ME) model to Pinyin-To-Character (PTC) conversion in-stead of Hidden Markov Model (HMM) that could not include complicated and long-distance lexical informa-tion. Two ME models were built based on simple and complex templates respectively, and the complex one gave better conversion result. Furthermore, conversion trigger pair of y A → y B cBwas proposed to extract the long-distance constrain feature from the corpus; and then Average Mutual Information (AMI) was used to se-lect conversion trigger pair features which were added to the ME model. The experiment shows that conver-sion error of the ME with conversion trigger pairs is reduced by 4% on a small training corpus, comparing with HMM smoothed by absolute smoothing. 展开更多
关键词 Pinyin-To-Character (PTC) conversion Maximum Entropy (ME) model Hidden Markov Model(HMM) Conversion trigger pair Average Mutual Information (AMI)
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How People Use Earthquake Information and Its Influence on Household Preparedness in New Zealand 被引量:1
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作者 Julia Susan Becker David Moore Johnsto~ +1 位作者 Douglas Paton Kevin Ronan 《Journal of Civil Engineering and Architecture》 2012年第6期673-681,共9页
Forty-eight interviews were undertaken with residents in Timaru, Wanganui and Napier, New Zealand, in 2008 to explore how people understand and use information about earthquake hazards and preparedness, and how this p... Forty-eight interviews were undertaken with residents in Timaru, Wanganui and Napier, New Zealand, in 2008 to explore how people understand and use information about earthquake hazards and preparedness, and how this process affects actual preparedness. Three main types of information were identified as being utilized by people: passive information (e.g., newspapers, brochures, TV, radio, websites), interactive information (e.g., community activities, school activities~ and workplace activities), and experiential information (e.g., experiencing a hazardous event, responding to an event, and working in an organization that deals with hazards). People tended to either contextualize hazard and preparedness information around any prevailing beliefs they had or form new beliefs on exposure to information. A number of core beliefs were identified as crucial for helping people consider that preparing is important and motivating actual adjustment adoption. Society also has an influence on how people interpret information and form intentions to prepare. People are often influenced by the opinions of others, and as preparing for disasters is not seen as a societal norm, this can cause people not to prepare. Feeling a responsibility for others (e.g., children) appears to be a major driver of preparedness. Other societal factors such as trust, leadership and sense of community also influence interpretation, dissemination and use of hazards and preparedness information. Finally, a number of resource issues can help or hinder preparedness. 展开更多
关键词 EARTHQUAKES PREPAREDNESS public education.
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Image Registration Based on Improved Mutual Information with Hybrid Optimizer 被引量:3
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作者 TANG Min 《Chinese Journal of Biomedical Engineering(English Edition)》 2008年第1期18-25,共8页
An improved image registration method is proposed based on mutual infor- mation with hybrid optimizer. Firstly, mutual information measure is combined with morphological gradient information. The essence of the gradie... An improved image registration method is proposed based on mutual infor- mation with hybrid optimizer. Firstly, mutual information measure is combined with morphological gradient information. The essence of the gradient information is that locations a large gradient magnitude should be aligned, but also the orientation of the gradients at those locations should be similar. Secondly, a hybrid optimizer combined PSO with Powell algorithm is proposed to restrain local maxima of mutual information function and improve the registration accuracy to sub-pixel level. Lastly, muhlresolution data structure based on Mallat decomposition can not only improve the behavior of registration function, but also improve the speed of the algorithm. Experimental results demonstrate that the new method can yield good registration result, superior to traditional optimizer with respect to smoothness and attraction basin as well as convergence speed. 展开更多
关键词 image registration mutual information muhiresolution data structure particle swarm optimization powell algorithm
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Information Interaction Is the Fifth Type of Fundamental Interactions
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作者 Igor Gurevich 《Computer Technology and Application》 2011年第10期813-817,共5页
Information is an integral part of the Universe. By its physical essence information is heterogeneity of matter and energy. Therefore information is inseparably connected with matter and energy. The universal measure ... Information is an integral part of the Universe. By its physical essence information is heterogeneity of matter and energy. Therefore information is inseparably connected with matter and energy. The universal measure of information in physical heterogeneity is the Shannon information entropy. An information approach along with a physical one allows to obtain new, sometimes more general data in relation to data obtained on the ground of physical rules only. The results presented in this paper show the effectiveness of informational approach for studying the interactions in the Universe. The paper shows that, along with the physical interactions the gravitational, electromagnetic, strong, weak interactions exists fifth type of fundamental interactions--information interaction, whose magnitude is not dependent on distance. The existence of information interaction is determined by the entanglement of quantum states, of quantum subsystems. The magnitude of information interaction is measured in bits. 展开更多
关键词 Physical interactions quantum system entangled states information interaction.
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A bidirectional feature selection method based on mutual information and redundancy-synergy coefficient
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作者 杨胜 张治 施鹏飞 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第3期299-306,共8页
Feature subset selection is a fundamental problem of data mining. The mutual information of feature subset is a measure for feature subset containing class feature information. A hashing mechanism is proposed to calcu... Feature subset selection is a fundamental problem of data mining. The mutual information of feature subset is a measure for feature subset containing class feature information. A hashing mechanism is proposed to calculate the mutual information of feature subset. The feature relevancy is defined by mutual information. Redundancy-synergy coefficient, a novel redundancy and synergy measure for features to describe the class feature, is defined. In terms of information maximization rule, a bidirectional heuristic feature subset selection method based on mutual information and redundancy-synergy coefficient is presented. This study’s experiments show the good performance of the new method. 展开更多
关键词 mutual information feature selection pattern classification data mining
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A MNCIE method for registration of ultrasound images
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作者 金晶 王强 沈毅 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第2期252-258,共7页
A new approach to the problem of registration of ultrasound images is presented, using a concept of Nonlinear Correlation Information Entropy (NCIE) as the matching criterion. The proposed method applies NCIE to measu... A new approach to the problem of registration of ultrasound images is presented, using a concept of Nonlinear Correlation Information Entropy (NCIE) as the matching criterion. The proposed method applies NCIE to measure the correlation degree between the image intensities of corresponding voxel in the floating and reference images. Registration is achieved by adjustment of the relative position until NCIE between the images is maximized. However, unlike mutual information (MI), NCIE varies in the closed interval [0, 1], and around the extremum it varies sharply, which makes it possible that thresholds of NCIE can be used to boost the search for the registration transformation. Using this feature of NCIE, we combine the downhill simplex searching algorithm to register the ultrasound images. The simulations are conducted to testify the effectiveness and rapidity of the proposed registration method, in which the ultrasound floating images are aligned to the reference images with required registration accuracy. Moreover, the NCIE based method can overcome local minima problem by setting thresholds and can take care of the differences in contrast between the floating and reference images. 展开更多
关键词 image registration nonlinear correlation information entropy mutual information downhill simplex
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An Operational Method for Fast Detecting Abnormal Channels in Imaging Spectrometers
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作者 MA Jiping LI Deren TONG Qingxi ZHENG Lanfen 《Geo-Spatial Information Science》 2002年第4期50-54,共5页
Data from abnormal channels in an imaging spectrometer almost always exerts an undesired impact on spectrum matching,classification,pattern recognition and other applications in hyperspectral remote sensing.To solve t... Data from abnormal channels in an imaging spectrometer almost always exerts an undesired impact on spectrum matching,classification,pattern recognition and other applications in hyperspectral remote sensing.To solve this problem,researchers should get rid of the data acquired by these channels.Selecting abnormal channels just in the way of visually examining each band image in a imaging data set is a conceivably hard and boring job.To relieve the burden,this paper proposes a method which exploits the spatial and spectral autocorrelations inherent in imaging spectrometer data,and can be used to speed up and,to a great degree,automate the detection of abnormal channels in an imaging spectrometer.This method is applied easily and successfully to one PHI data set and one Hymap data set,and can be applied to remotely sensed data from other hyperspectral sensors. 展开更多
关键词 imaging spectrometer mutual information IHR
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Measurement of Incompatible Probability in Information Retrieval:A Case Study with User Clicks 被引量:1
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作者 王博 侯越先 《Transactions of Tianjin University》 EI CAS 2013年第1期37-42,共6页
The incompatible probability represents an important non-classical phenomenon, and it describes conflicting observed marginal probabilities, which cannot be satisfied with a joint probability. First, the incompatibili... The incompatible probability represents an important non-classical phenomenon, and it describes conflicting observed marginal probabilities, which cannot be satisfied with a joint probability. First, the incompatibility of random variables was defined and discussed via the non-positive semi-definiteness of their covariance matrixes. Then, a method was proposed to verify the existence of incompatible probability for variables. A hypothesis testing was also applied to reexamine the likelihood of the observed marginal probabilities being integrated into a joint probability space, thus showing the statistical significance of incompatible probability cases. A case study with user click-through data provided the initial evidence of the incompatible probability in information retrieval (IR), particularly in user interaction. The experiments indicate that both incompatible and compatible cases can be found in IR data, and informational queries are more likely to be compatible than navigational queries. The results inspire new theoretical perspectives of modeling the complex interactions and phenomena in IR. 展开更多
关键词 incompatible probability semi-definiteness hypothesis testing information retrieval user clicks
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IMM/MHT FUSING FEATURE INFORMATION IN VISUAL TRACKING
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作者 Li Shuangquan Sun Shuyan Jiang Sheng Huang Zhipei Wu Jiankang 《Journal of Electronics(China)》 2009年第6期765-770,共6页
In multi-target tracking,Multiple Hypothesis Tracking (MHT) can effectively solve the data association problem. However,traditional MHT can not make full use of motion information. In this work,we combine MHT with Int... In multi-target tracking,Multiple Hypothesis Tracking (MHT) can effectively solve the data association problem. However,traditional MHT can not make full use of motion information. In this work,we combine MHT with Interactive Multiple Model (IMM) estimator and feature fusion. New algorithm greatly improves the tracking performance due to the fact that IMM estimator provides better estimation and feature information enhances the accuracy of data association. The new algorithm is tested by tracking tropical fish in fish container. Experimental result shows that this algorithm can significantly reduce tracking lost rate and restrain the noises with higher computational effectiveness when compares with traditional MHT. 展开更多
关键词 Multiple Hypothesis Tracking (MHT) Interacting Multiple Model (IMM) Feature information fusion Data association
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The Role of New Media in Communicating to Beneficiaries of Ngos Working in Kajiado County, Kenya
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作者 Patriciah Muia Clayton Peel 《Journalism and Mass Communication》 2017年第10期551-566,共16页
Organizations serving rural communities in Kenya have found use for media as a tool of replacement for personal interface in the daily communication with the beneficiaries of their programmes in deprived areas. The in... Organizations serving rural communities in Kenya have found use for media as a tool of replacement for personal interface in the daily communication with the beneficiaries of their programmes in deprived areas. The interactions between two non-governmental organizations (NGOs) and rural beneficiaries in Isinya, Kajiado County, provide case studies of how NGOs modernize their outreach via new media and how beneficiaries respond to the change. The research was not only concerned with the presence of information technology (IT) and online facilities in remote and deprived locations. It also evaluated responses to the replacement of person-to-person contact with technologies, such as social media, the Internet, Compact Disc-Read Only Memory (CD-ROMs), and Digital Versatile Disc (DVDs). Conducted in four focus groups, the research evaluated the uptake of new media technologies by beneficiaries following the transition, asked whether beneficiaries engaged with the materials being communicated, and assessed whether this confluence of technology and culture had eased the flow of communication, or unsettled it. Evidence of discomfort among the older (over 50-year-old) beneficiaries stemmed from fear of failure to master the technologies and a desire for a continuation of regular interpersonal interaction with the NGO field officers (whose field trips were scaled back in preference of computer-mediated communication). However, younger (under 40-year-old) beneficiaries were less insistent on regular interpersonal visits and were appreciative of the use of technology, and of the building of Maarifa Centres to give the beneficiaries free access to internet, DVDs, and hard drive-based information materials. Another demographic, beneficiaries aged between 40 and 50 years old, said they were not comfortable with the change and wanted the interpersonal interaction to continue, but were open to a longer-term transition once the beneficiaries were all conversant with the uses of the new technologies. The study recommends a better managed transition that accommodated the beneficiaries’ fears, misgivings, and cultural preference for verbal, face-to-face consultation. 展开更多
关键词 social media new media NGO s traditional media BENEFICIARIES social networking sites
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Analysis Markov Delay Control Strategy for Smart Home Systems
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作者 Zhejun Kuang Liang Hu Feiyan Chen 《International Journal of Technology Management》 2013年第1期34-36,共3页
with the development of science and technology, smart home systems require better, faster to meet the needs of human. In order to achieve this goal, the human-machine-items all need to interact each other with underst... with the development of science and technology, smart home systems require better, faster to meet the needs of human. In order to achieve this goal, the human-machine-items all need to interact each other with understand, efficient and speedy. Cps could unify combination with the human-machine-items; realize the interaction between the physical nformation and the cyber world. However, information interaction and the control task needs to be completed in a valid time. Therefore, the transform delay control strategy becomes more and more important. This paper analysis Markov delay control strategy for smart home systems, which might help the system decrease the transmission delay. 展开更多
关键词 cyber physical systems smart home real-time control architecture
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Transferring Multi-Dimensional Quantum States and Preparing Quantum Networks in Cavity QED
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作者 陈子翃 郑小兰 廖长庚 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第9期452-456,共5页
In this paper we propose a scheme for transferring quantum states and preparing quantum networks. Compared with the previous schemes, this scheme is more efficient, since three or four-dimensional quantum states can b... In this paper we propose a scheme for transferring quantum states and preparing quantum networks. Compared with the previous schemes, this scheme is more efficient, since three or four-dimensional quantum states can be transferred with a single step and information interchange of three-dimensional quantum states can be realized, which is a significant improvement. It is based on the resonant interaction of a three-mode cavity field with an atom. As a consequence, the interaction time is shortened greatly. Furthermore, we give some discussions about the feasibility of the scheme. 展开更多
关键词 multi-dimensional quantum states transfer quantum networks cavity QED
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Multi-Owner Keyword Search over Shared Data without Secure Channels in the Cloud
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作者 Yilun Wu Xicheng Lu +3 位作者 Jinshu Su Peixin Chen Xiaofeng Wang Bofeng Zhang 《China Communications》 SCIE CSCD 2017年第5期124-133,共10页
Searchable encryption allows cloud users to outsource the massive encrypted data to the remote cloud and to search over the data without revealing the sensitive information. Many schemes have been proposed to support ... Searchable encryption allows cloud users to outsource the massive encrypted data to the remote cloud and to search over the data without revealing the sensitive information. Many schemes have been proposed to support the keyword search in a public cloud. However,they have some potential limitations. First,most of the existing schemes only consider the scenario with the single data owner. Second,they need secure channels to guarantee the secure transmission of secret keys from the data owner to data users. Third,in some schemes,the data owner should be online to help data users when data users intend to perform the search,which is inconvenient.In this paper,we propose a novel searchable scheme which supports the multi-owner keyword search without secure channels. More than that,our scheme is a non-interactive solution,in which all the users only need to communicate with the cloud server. Furthermore,the analysis proves that our scheme can guarantee the security even without secure channels. Unlike most existing public key encryption based searchable schemes,we evaluate the performance of our scheme,which shows that our scheme is practical. 展开更多
关键词 keyword search cloud security secure channels proxy re-encryption
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Persistent variation in spatial behavior affects the structure and function of interaction networks 被引量:4
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作者 Noa PINTER-WOLLMAN 《Current Zoology》 SCIE CAS CSCD 2015年第1期98-106,共9页
The function of a network is affected by its structure. For example, the presence of highly interactive individuals, or hubs, influences the extent and rate of information spread across a network. In a network of inte... The function of a network is affected by its structure. For example, the presence of highly interactive individuals, or hubs, influences the extent and rate of information spread across a network. In a network of interactions, the duration over which individual variation in interactions persists may affect how the network operates. Individuals may persist in their behavior over time and across situations, often referred to as personality. Colonies of social insects are an example of a biological system in which the structure of the coordinated networks of interacting workers may greatly influence information flow within the colony, and therefore its collective behavior. Here I investigate the effects of persistence in walking patterns on interaction networks us- ing computer simulations that are parameterized using observed behavior of harvester ants. I examine how the duration of persis- tence in spatial behavior influences network structure. Furthermore, I explore how spatial features of the environment affect the relationship between persistent behavior and network structure. I show that as persistence increases, the skewness of the weighted degree distribution of the interaction network increases. However, this relationship holds only when ants are confined in a space with boundaries, but not when physical barriers are absent. These findings suggest that the influence of animal personalities on network structure and function depends on the environment in which the animals reside [Current Zoology 61 (1): 98-106, 2015]. 展开更多
关键词 Agent based model Collective behavior Complex system Self organization PERSONALITY TEMPERAMENT
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