期刊文献+
共找到17,269篇文章
< 1 2 250 >
每页显示 20 50 100
On the Integration and Disintegration of Material Resources under Parallel Information Context
1
作者 赵凤琴 赵巍 《Sino-US English Teaching》 2006年第6期49-52,共4页
This article begins with a brief introduction to the concept of parallel information and integration or disintegration of the teaching material resources. It discusses the necessity and problems of effective utilizati... This article begins with a brief introduction to the concept of parallel information and integration or disintegration of the teaching material resources. It discusses the necessity and problems of effective utilization in teaching material resources based on a questionnaire on college students and teachers. It also presents some suggestions for English teachers to be of good help to students in the utilization of material resources. 展开更多
关键词 oarallel information English material resourceS
下载PDF
New approach to eliminate structural redundancy in case resource pools using α mutual information 被引量:6
2
作者 Man Xu Haiyan Yu Jiang Shen 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2013年第4期625-633,共9页
Structural redundancy elimination in case resource pools (CRP) is critical for avoiding performance bottlenecks and maintaining robust decision capabilities in cloud computing services. For these purposes, this pape... Structural redundancy elimination in case resource pools (CRP) is critical for avoiding performance bottlenecks and maintaining robust decision capabilities in cloud computing services. For these purposes, this paper proposes a novel approach to ensure redundancy elimination of a reasoning system in CRP. By using α entropy and mutual information, functional measures to eliminate redundancy of a system are developed with respect to a set of outputs. These measures help to distinguish both the optimal feature and the relations among the nodes in reasoning networks from the redundant ones with the elimination criterion. Based on the optimal feature and its harmonic weight, a model for knowledge reasoning in CRP (CRPKR) is built to complete the task of query matching, and the missing values are estimated with Bayesian networks. Moreover, the robustness of decisions is verified through parameter analyses. This approach is validated by the simulation with benchmark data sets using cloud SQL. Compared with several state-of-the-art techniques, the results show that the proposed approach has a good performance and boosts the robustness of decisions. 展开更多
关键词 case resource pool (CRP) knowledge reasoning redundancy elimination α mutual information robust decision.
下载PDF
Study on Dynamic Information of Animal Genetic Resources in China 被引量:4
3
作者 MAYue-hui XUGui-fang +2 位作者 WANGDuan-yun LIUHai-liang YANGYan 《Agricultural Sciences in China》 CAS CSCD 2003年第1期80-84,共5页
The dynamic information of 331 animal genetic resources in 17 important animal genetic resource provinces (regions) was analyzed. According to the population inbreeding coefficient, combining with the information of p... The dynamic information of 331 animal genetic resources in 17 important animal genetic resource provinces (regions) was analyzed. According to the population inbreeding coefficient, combining with the information of population dynamic change trend and cross degree, these genetic resources for threatened degrees were classified. The results indicated that the population size of 138 breeds had increased, 147 breeds had decreased, 3 breeds were constant, 7 breeds (or varieties) were extinct, 9 breeds (or varieties) were critically endangered and needed urgently conserve, 50 breeds (or varieties) were endangered and should be conserved. We put forward a conservation and utilization plan for animal genetic resources. 展开更多
关键词 Animal genetic resources Dynamic information CONSERVATION
下载PDF
Information System for Ocean Wave Resources and Its Application to Wave Power Utilization 被引量:3
4
作者 Lu Wei Engineer, Computer Center, Guangdong University of Technology, Guangzhou 510090 《China Ocean Engineering》 SCIE EI 1997年第3期325-334,共10页
An information system for ocean wave resources and its application to wave power utilization are introduced. It can manage, analyze and process the data in the monthly report of ocean wave observation records of the S... An information system for ocean wave resources and its application to wave power utilization are introduced. It can manage, analyze and process the data in the monthly report of ocean wave observation records of the State Ocean Administration, and can provide various kinds of curves and numerical characters of statistics. This system has been put into utility in Guangzhou Institute of Energy Conversion (GIEC), the Chinese Academy of Sciences since 1996. An application example is given of the investigation and analysis on ocean wave resource of the Nan Ao Island, Guangdong Province, where a 100 kW onshore OWC (oscillating water column) wave power station will be built. The wave power distribution is obtained in different wave directions for different wave periods. It is found that 70 percent of the wave power comes from the direction of ENE, and more than 95 percent of the wave power is related with direction E. The average wave power density is about 3 kW/m, and more than 80 percent of the wave power is distributed in the wave periods of 4 second to 5 second. Based on the analysis of wave resources, a site on the east coast of the island and a design width of 20 m for the 100 kW station are suggested. 展开更多
关键词 ocean wave resources wave energy wave power station information system site selection
下载PDF
STUDY OF SETTING UP THE FOREST RESOURCES MANAGEMENT INFORMATION SYSTEM BASED ON WEBGIS 被引量:7
5
作者 WU Su-li, LOU Quan-sheng, QUAN Zhi-jie, LI Xiao-jun (Northwest Sci-tech University of Agriculture and Forestry, Xi’an 712100, P. R. China) 《Chinese Geographical Science》 SCIE CSCD 2003年第1期56-61,共6页
Based on an analysis of the characteristics of the Forest Resources Management Information System of each development phase, and consideration of the technical trend in Geographic Information System (GIS) in the Inter... Based on an analysis of the characteristics of the Forest Resources Management Information System of each development phase, and consideration of the technical trend in Geographic Information System (GIS) in the Internet Age, this paper explores the importance and the feasibility of setting up Forest Resources Management Information System based on the WEBGIS. At the same time, based on the experience of our study, the paper explores the function, structure and method of developing the Forest Resources Management Information System based on WEBGIS. With the technology of WEBGIS, the Forest Resources Management Information System with data from Huoditang Farm was set up, which makes a great impact on forest resources management. So setting up the Forest Resources Management Information System based on WEBGIS is a trend of forest resources management. In the course of setting up this system, we must pay attention to following questions: 1) unify data standard and information encoding; 2) change mind. 展开更多
关键词 WEBGIS forest resources management information system
下载PDF
Red Soil Resource Information System and Its Preliminary Application 被引量:4
6
作者 WANGRENCHAO SHIZHOU 《Pedosphere》 SCIE CAS CSCD 1998年第1期9-14,共6页
Red soil is a very important soil resource in southern China. However, due to being simultaneously of high productive potentialities and severely degraded, it needs harnessing urgently. Red Soil Resource Information S... Red soil is a very important soil resource in southern China. However, due to being simultaneously of high productive potentialities and severely degraded, it needs harnessing urgently. Red Soil Resource Information System (RSRIS) based on remote sensing and geographic information system (GIS) plays an important role in survey, evaluation, utilization and management of red soil resource. RSRIS of Quzhou City) Zhejiang Province (1:250000) and RSRIS of Longyou County, Zhejiang Province (1:50000) have been made respectively on SUN SPARC station and using ARC/INFO. This paper introduces the system design,database creation and system functions, and it particularly focuses on developing applied models, such as red soil resource division and mapping, suitability evaluation, erosion risk evaluation, plant utilization zone etc. The problems on study of RSRIS and its developing strategy are also discussed. 展开更多
关键词 applied model geographic information system red soil resource
下载PDF
An Information Hiding Algorithm Based on Bitmap Resource of Portable Executable File 被引量:2
7
作者 Jie Xu Li-Jun Feng Ya-Lan Ye Yue Wu 《Journal of Electronic Science and Technology》 CAS 2012年第2期181-184,共4页
An information hiding algorithm is proposed, which hides information by embedding secret data into the palette of bitmap resources of portable executable (PE) files. This algorithm has higher security than some trad... An information hiding algorithm is proposed, which hides information by embedding secret data into the palette of bitmap resources of portable executable (PE) files. This algorithm has higher security than some traditional ones because of integrating secret data and bitmap resources together. Through analyzing the principle of bitmap resources parsing in an operating system and the layer of resource data in PE files, a safe and useful solution is presented to solve two problems that bitmap resources are incorrectly analyzed and other resources data are confused in the process of data embedding. The feasibility and effectiveness of the proposed algorithm are confirmed through computer experiments. 展开更多
关键词 Bitmap resources data embedding information hiding portable executable file.
下载PDF
Theory and Method of Mineral Resource Prediction Based on Synthetic Information 被引量:2
8
作者 Wang Shicheng Ye Shuisheng Zhou Dongdai Mineral Resources Institute of Comprehensive Information Prediction, Jilin University, Changchun 130026 《Journal of China University of Geosciences》 SCIE CSCD 2003年第3期207-214,共8页
Metallogenic prognosis of synthetic information uses the geological body and the mineral resource body as a statistical unit to interpret synthetically the information of geology, geophysics, geochemistry and remote s... Metallogenic prognosis of synthetic information uses the geological body and the mineral resource body as a statistical unit to interpret synthetically the information of geology, geophysics, geochemistry and remote sensing from the evolution of geology and puts all the information into one entire system by drawing up digitalized interpretation maps of the synthetic information. On such basis, different grades and types of mineral resource prospecting models and predictive models of synthetic information can be established. Hence, a new integrated prediction system will be formed of metallogenic prognosis (qualitative prediction), mineral resources statistic prediction (determining targets) and mineral resources prediction (determining resources amount). 展开更多
关键词 synthetic information mineral resources prediction theory and method
下载PDF
Marine Engineering Geological Exploration Information System(MEGEIS):A GIS-based Application to Marine Resources Exploitation 被引量:3
9
作者 SU Tianyun LIU Baohua +2 位作者 ZHAI Shikui LIANG Ruicai ZHENG Yanpeng 《Journal of Ocean University of China》 SCIE CAS 2007年第3期226-230,共5页
Based on the ArcGIS geographic information system and the ORACLE database management system,this paper reports our studies on the technology of Marine Engineering Geological Exploration Information System(MEGEIS). By ... Based on the ArcGIS geographic information system and the ORACLE database management system,this paper reports our studies on the technology of Marine Engineering Geological Exploration Information System(MEGEIS). By analyzing system structure,designing function modules and discussing data management,this paper systematically proposes a framework of technol-ogy to integrate,manage,and analyze the seabed information comprehensively. Then,the technology is applied to the design and development of the Bohai Sea Oilfield Paradigm Area Information System. The system can not only meet the practical demands of marine resources exploration and exploitation in the Bohai Sea oilfield,but also serve as a preparatory work in theory and technology for the realization of the 'Digital Seabed'. 展开更多
关键词 geographic information system (GIS) Digital Oilfield marine resources exploitation Digital Seabed Marine Engineering Geological Exploration information System (MEGEIS)
下载PDF
GIS Platform-based Multi-source Information System for Evaluation of Cu, W and Au Resources in the Northern Qilian, China 被引量:1
10
作者 LIChunxia FUShuixing ZHANGShoulin 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2004年第2期558-561,共4页
Based on the information of geology, geochemistry, geophysics and remote sensing, the GIS of multi-source information is used to evaluate Cu, W and Au mineral resources in Northern Qilian, China. As the GIS evaluation... Based on the information of geology, geochemistry, geophysics and remote sensing, the GIS of multi-source information is used to evaluate Cu, W and Au mineral resources in Northern Qilian, China. As the GIS evaluation system works out in the thinking of geological prospecting, its functions include file management, graph edition, database maintenance, information inquiry and comprehensive spatial analysis as well as prospecting target prognosis. Accordingly, the GIS evaluation system can be used directly and conveniently for inquiry and analysis of visual graphs or images. 展开更多
关键词 GIS geoscientific information visualization mineral resources spatial database northern Qilian
下载PDF
Spatial and Dynamic Analysis of Regional Sustainable Development Using Geographic Information System and Relative Carrying Capacity of Resources 被引量:3
11
作者 Qi Wang Xiaodan Wang +3 位作者 Hua Tang Jun Li Haihu Ma Tianxing Cheng 《Natural Resources》 2011年第1期28-34,共7页
Relative carrying capacity of resources is an index to measure sustainable development through carrying capacity. Case studies of eleven cities in Zhejiang (Hangzhou, Ningbo, Wenzhou, Jiaxing, Huzhou, Shaoxing, Jinhua... Relative carrying capacity of resources is an index to measure sustainable development through carrying capacity. Case studies of eleven cities in Zhejiang (Hangzhou, Ningbo, Wenzhou, Jiaxing, Huzhou, Shaoxing, Jinhua, Quzhou, Zhoushan, Taizhou and Lishui) illustrated regional sustainable development approach. In this study, to provide insight into spatial and dynamic analysis of region sustainable development, we calculated the relative carrying capacity of land resources and economical resources and synthetical carrying capacity of resources in different cities in Zhejiang, and geographic information system was carried out. The results showed that all cities but Hangzhou and Ningbo were ecologically sustainable, and relative carrying capacity of land resources in northern and eastern Zhejiang was larger than those in southern and western Zhejiang. The sampling years of Wenzhou, Hangzhou and Ningbo contribution rates of land resource to synthetic carrying capacity were grouped into three stages, and there were two milestones trends and changes in 1996 and 2004, respectively. This study demonstrated that geographic information system and relative carrying capacity of resources are effective for assessment of region sustainable development, and provide policy guidelines for decision-making. 展开更多
关键词 GEOGRAPHIC information System Arcgis RELATIVE Carrying Capacity of resourceS REGIONAL SUSTAINABLE Development CONTRIBUTION Rate
下载PDF
Multi-formal and Information-based Emergency Resource Reserve System in China 被引量:1
12
作者 Li Hua He Jinsheng Zhu Xianmin 《Chinese Journal of Population,Resources and Environment》 北大核心 2008年第4期52-58,共7页
Emergency resources are an important basis of effective emergency response. But there are many disadvantages of the Chinese traditional material reserve method in which the resources are separately reserved in differe... Emergency resources are an important basis of effective emergency response. But there are many disadvantages of the Chinese traditional material reserve method in which the resources are separately reserved in different regions and sections according to the kinds of disasters. So there comes the Multi-formal and Information-based Emergency Resource Reserve System (MIERRS) in China. The reserve body and method change from the single into the multiple forms, that is, the main reserve body changes from the single government agency into the organizations combining with the military, enterprise and society, and the reserve method changes from single material reserve into the reserve combining with market reserve, talents and technology reserve, and production capacity reserve. The content of the reserve change from material to information means to develop the Emergency Resource Management Information System realizing real-time control of resource characteristics and relevant reserve information. The MIERRS leads to a reserve system with rapid response and flexible schedule. It provides a convenient platform for resource sharing, thus avoiding duplication and waste, improving the utilization of resources, reducing the reserve loss and optimizing the structure of resource reserve. 展开更多
关键词 emergency management resource RESERVE information
下载PDF
Remote Sensing Investigation Method on Land Resources by A Geographic Information System 被引量:1
13
作者 Chen Shengbo, Xing Lixin and Meng Tao (Changchun University of Science and Technology, Changchun, 130026) 《Global Geology》 1999年第2期227-229,共3页
The human living and developing depend on the land. The remote sensing images in Keerqinhouqi, Inner Mongolia Autonomous Region, China, were processed . Supported by a geographical information system, the image map wa... The human living and developing depend on the land. The remote sensing images in Keerqinhouqi, Inner Mongolia Autonomous Region, China, were processed . Supported by a geographical information system, the image map was formed by th e boundary making and overlaying to the precision-corrected remote sensed image . Finally, the current land use types were also classified and outlined. The area s were also calculated. The error is less than 10 precent, compared with the sur vey. Thus the proceduce is considered accepfable. 展开更多
关键词 REMOTE SENSING LAND resource GEOGRAPHICAL information System (GIS)
下载PDF
Intelligent Resources Management System Design in Information Centric Networking 被引量:2
14
作者 Hengyang Zhang Shixiang Zhu +2 位作者 Renchao Xie Tao Huang Yunjie Liu 《China Communications》 SCIE CSCD 2017年第8期105-123,共19页
Information centric networking(ICN) is a new network architecture that is centred on accessing content. It aims to solve some of the problems associated with IP networks, increasing content distribution capability and... Information centric networking(ICN) is a new network architecture that is centred on accessing content. It aims to solve some of the problems associated with IP networks, increasing content distribution capability and improving users' experience. To analyse the requests' patterns and fully utilize the universal cached contents, a novel intelligent resources management system is proposed, which enables effi cient cache resource allocation in real time, based on changing user demand patterns. The system is composed of two parts. The fi rst part is a fi ne-grain traffi c estimation algorithm called Temporal Poisson traffi c prediction(TP2) that aims at analysing the traffi c pattern(or aggregated user requests' demands) for different contents. The second part is a collaborative cache placement algorithm that is based on traffic estimated by TP2. The experimental results show that TP2 has better performance than other comparable traffi c prediction algorithms and the proposed intelligent system can increase the utilization of cache resources and improve the network capacity. 展开更多
关键词 information centric networking traffi c estimation cache resources allocation time series analysis intelligent analysis
下载PDF
What to Cache:Differentiated Caching Resource Allocation and Management in Information-Centric Networking 被引量:6
15
作者 Ru Huo Renchao Xie +2 位作者 Hengyang Zhang Tao Huang Yunjie Liu 《China Communications》 SCIE CSCD 2016年第12期261-276,共16页
Information-centric networking(ICN) aims to improve the efficiency of content delivery and reduce the redundancy of data transmission by caching contents in network nodes. An important issue is to design caching metho... Information-centric networking(ICN) aims to improve the efficiency of content delivery and reduce the redundancy of data transmission by caching contents in network nodes. An important issue is to design caching methods with better cache hit rate and achieve allocating on-demand. Therefore, an in-network caching scheduling scheme for ICN was designed, distinguishing different kinds of contents and dynamically allocating the cache size on-demand. First discussing what was appropriated to be cached in nodes, and then a classification about the contents could be cached was proposed. Furthermore, we used AHP to weight different contents classes through analyzing users' behavior. And a distributed control process was built, to achieve differentiated caching resource allocation and management. The designed scheme not only avoids the waste of caching resource, but also further enhances the cache availability. Finally, the simulation results are illustrated to show that our method has the superior performance in the aspects of server hit rate and convergence. 展开更多
关键词 caching resource allocation MANAGEMENT differentiation control process information-centric networking
下载PDF
Smart Dynamic Resource Allocation Model for Patient-Driven Mobile Medical Information System Using C4.5 Algorithm
16
作者 Ching-Kan Lo Hsing-Chung Chen +3 位作者 Pei-Yuan Lee Ming-Chou Ku Lidia Ogiela Cheng-Hung Chuang 《Journal of Electronic Science and Technology》 CAS CSCD 2019年第3期231-241,共11页
A mobile medical information system (MMIS) is an integrated application (app) of traditional hospital information systems (HIS) which comprise a picture archiving and communications system (PACS), laboratory informati... A mobile medical information system (MMIS) is an integrated application (app) of traditional hospital information systems (HIS) which comprise a picture archiving and communications system (PACS), laboratory information system (LIS), pharmaceutical management information system (PMIS), radiology information system (RIS), and nursing information system (NIS). A dynamic resource allocation table is critical for optimizing the performance to the mobile system, including the doctors, nurses, or other relevant health workers. We have designed a smart dynamic resource allocation model by using the C4.5 algorithm and cumulative distribution for optimizing the weight of resource allocated for the five major attributes in a cooperation communications system. Weka is used in this study. The class of concept is the performance of the app, optimal or suboptimal. Three generations of optimization of the weight in accordance with the optimizing rate are shown. 展开更多
关键词 Dynamic resource ALLOCATION electronic health RECORD HOSPITAL information SYSTEM MOBILE medical information SYSTEM
下载PDF
The hot issues of studies in China on digital information resources: Based on co-word analysis 被引量:1
17
作者 MA Feicheng WANG Juncheng CHEN Jinxia 《Chinese Journal of Library and Information Science》 2008年第1期14-26,共13页
With the SPSS and the help of factor method and hierarchical clustered method,journal articles on digital information resources(DIR) from CNKI in the past ten years are analyzed with a co-word analytical method in thi... With the SPSS and the help of factor method and hierarchical clustered method,journal articles on digital information resources(DIR) from CNKI in the past ten years are analyzed with a co-word analytical method in this paper. The hot issues of studies on DIR and the relationship between those subjects are analyzed in this investigation as well. 展开更多
关键词 Digital information resources Co-word analysis Factor analysis Clustered analysis
下载PDF
Establishment of Geographic Information Database of Benxi City and Its Application in Analysis of Climatic Resources
18
作者 宋仁锋 高艳波 宋长远 《Meteorological and Environmental Research》 CAS 2010年第1期68-70,74,共4页
Based on 1:50 000 basic geographic information data,the digital elevation,longitude,latitude,slope,aspect and all kinds of terrain databases of Benxi City (China) were established with Arcgis 9.2 software.Township bou... Based on 1:50 000 basic geographic information data,the digital elevation,longitude,latitude,slope,aspect and all kinds of terrain databases of Benxi City (China) were established with Arcgis 9.2 software.Township boundary database was established by digitizing map,and the township information was amended according to the reality.Taking the elaborate simulation of spatial distribution of annual mean temperature as an example,the paper reports the application of the geographic information database in analysis of climatic resources. 展开更多
关键词 Geographic information system Climatic resources Geographic information database Benxi City China
下载PDF
Incentive Mechanism Model Design for Sharing of Information Resources in Rural Areas
19
作者 Xirong GAO Lingling SHAN 《Asian Agricultural Research》 2013年第1期59-61,65,共4页
In order to solve the issues concerning the cross-unit sharing of information resources in rural areas, we analyze the incentive problem of the sharing of information resources in rural areas using the incentive theor... In order to solve the issues concerning the cross-unit sharing of information resources in rural areas, we analyze the incentive problem of the sharing of information resources in rural areas using the incentive theory method; establish corresponding incentive mechanism model (It is divided into positive incentive model and negative incentive model, and only when the two models guarantee each other and are used at the same time can they be effective). Based on this, we put forward the institutional design for sharing of information resources in rural areas as follows: firstly, establishing an administrative agency of rural information resources sharing, above the authority of all units, responsible for related work on sharing of information resources in rural areas; secondly, establishing and improving the positive and negative incentive mechanisms, to ensure the realization of sharing of information resources in rural areas. 展开更多
关键词 RURAL information resourceS information SHARING PR
下载PDF
Solutions to Integration Model of Rural Information Resources
20
作者 Xirong GAO Bo TAO 《Asian Agricultural Research》 2014年第10期26-29,33,共5页
The integration of rural information resources is a key factor restricting rural informationization and effective operation of rural information services. To solve problems of separate rural information resources and ... The integration of rural information resources is a key factor restricting rural informationization and effective operation of rural information services. To solve problems of separate rural information resources and departments acting willfully regardless of overall interest,this paper analyzed characteristics and distribution of rural information resources,built a basic framework for integration of rural information resources and a mathematic model of integration,and finally came up with specific solutions to integration of rural information resources. 展开更多
关键词 INTEGRATION of RURAL information resourceS INTEGRA
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部