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China's Space Computer Industry Rapidly Developing
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作者 Dong Bidan 《Aerospace China》 1995年第1期20-23,共4页
In 1993, China Aerospace Corporation(CASC) announced that it would give priority to the development of satellites and their applications, automobiles and components, computers and their applications, and regard them a... In 1993, China Aerospace Corporation(CASC) announced that it would give priority to the development of satellites and their applications, automobiles and components, computers and their applications, and regard them as its three-pillar industries, which was "a historic and significant strategic decision" said Mr. Liu Jiyuan, the president of CASC. New and 展开更多
关键词 CASC China’s space Computer Industry Rapidly developing CAD
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Evaluation of Well Spacing for Primary Development of Fractured Horizontal Wells in Tight Sandstone Gas Reservoirs
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作者 Fang Li Juan Wu +3 位作者 Haiyong Yi Lihong Wu Lingyun Du Yuan Zeng 《Fluid Dynamics & Materials Processing》 EI 2024年第5期1015-1030,共16页
Methods for horizontal well spacing calculation in tight gas reservoirs are still adversely affected by the complexity of related control factors,such as strong reservoir heterogeneity and seepage mechanisms.In this s... Methods for horizontal well spacing calculation in tight gas reservoirs are still adversely affected by the complexity of related control factors,such as strong reservoir heterogeneity and seepage mechanisms.In this study,the stress sensitivity and threshold pressure gradient of various types of reservoirs are quantitatively evaluated through reservoir seepage experiments.On the basis of these experiments,a numerical simulation model(based on the special seepage mechanism)and an inverse dynamic reserve algorithm(with different equivalent drainage areas)were developed.The well spacing ranges of Classes I,II,and III wells in the Q gas field are determined to be 802–1,000,600–662,and 285–400 m,respectively,with their average ranges as 901,631,and 342.5 m,respectively.By considering both the pairs of parallel well groups and series well groups as examples,the reliability of the calculation results is verified.It is shown that the combination of the two models can reduce errors and provide accurate results. 展开更多
关键词 Well spacing for primary development tight gas reservoir fractured horizontal well threshold pressure gradient stress sensitivity
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Geographical Space Development Zone Classification:An Essential Guide for Transformation of Mountain Resource Cities 被引量:1
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作者 ZHANG Jifei DENG Wei LIU Shaoquan 《Chinese Geographical Science》 SCIE CSCD 2015年第3期361-374,共14页
Sustainable development of mountain areas and resource cities has been a significant issue worldwide. Transformation of mountain resource cities is facing tremendous difficulties. In the context of National Major Func... Sustainable development of mountain areas and resource cities has been a significant issue worldwide. Transformation of mountain resource cities is facing tremendous difficulties. In the context of National Major Function-oriented Zone Planning raised to a national strategic level in China, it is important to effectively implement the planning by studying geographical space development zone classification of prefecture- and county-level cities based on their major function orientation. This research is even more critical for the transformation of mountain resource cities. In this study, we evaluated geographical space development suitability, and classified geographical space development zones for Dongchuan Distric in Kunming City of Yunan Province, China, a typical mountain resource city. A quantitative grid-based evaluation was conducted using key-factor identification and restrictive-supportive comprehensive index determinati based on a geographic information system framework with different source data. The results included a classification of geographical space of Dongchuan into five types: the prohibited development zone, the inappropriate development zone, the controlled development zone, the moderate development zone and the preferential development zone. The distribution characteristics of geographical space development zones showed that the proportion of the prohibited development zone is the highest, while that of the other four development zones is comparatively lower and significantly fragmented. The geographical space development suitability is greatly controlled by the geomorphic pattern. Although Dongchuan is extremely restrained in terms of suitable geographical space for industrialization and urbanization, it still has the certain preferential and moderate development zones with an area of 207.81 km2 with large parts being concentrated and contiguous, which makes these areas the most favorable for development. Only by adapting to this reality and implementing centralized development strategy in the regions with higher suitability may Dongchuan achieve smooth transformation from expansion mode to compact mode and its sustainable development capacity may be improved. Suggestions with an angle of industrial and spatial development pattern were put forward for the transformation of the city in future. 展开更多
关键词 geographical space development suitability mountain resource city transformation of resource cities
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The theory and method research on the double evaluation of land and space:A survey 被引量:1
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作者 WANG You-xiao LU Ru-cheng 《Ecological Economy》 2020年第4期307-316,共10页
By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layo... By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layout and optimization of land and space development pattern.From the aspects of resource carrying capacity,environmental carrying capacity,the importance of ecological protection,the suitability of agricultural production,and the suitability of urban construction,we sort out domestic and foreign documents.The evaluation of resource carrying capacity has changed from single-factor evaluation to multi-factor comprehensive evaluation.At present,the optimization of land use pattern based on the“three-generation”space is still under exploration,it is not enough to systematize and summarize the thought of optimizing the spatial pattern of the national territory.The theoretical framework,model,method and index of“dual evaluation”of territorial space need to be improved continuously,it also needs the scientific analysis and cognition from the natural direction to the human location direction and the spatial equilibrium state as the new driving force. 展开更多
关键词 resource and environmental carrying capacity suitability of land and space development EVALUATION theory and method research progress
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Laying a Solid Foundation,Expanding Development Space——Foundation Stone Laying Ceremony of ZTE R&D Building Held in Shenzhen
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《ZTE Communications》 2003年第2期65-65,共1页
Earth was broken for the ZTE R&D Building at theheadquarters on October 28, 2003. Hou Weigui,President of ZTE, delivered a speech on the cere-mony. He said:“As part of the development strate-gy of ZTE, the new bu... Earth was broken for the ZTE R&D Building at theheadquarters on October 28, 2003. Hou Weigui,President of ZTE, delivered a speech on the cere-mony. He said:“As part of the development strate-gy of ZTE, the new building will play an importantrole in improving the overall R&D arrangement andthe environment of production and R&D, reducingthe operating cost and enhancing the image of thewhole company.”The R&D building will be the Shenzhen R&D 展开更多
关键词 ZTE Foundation Stone Laying Ceremony of ZTE R&D Building Held in Shenzhen Laying a Solid Foundation Expanding Development space of in
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Speeding up the Development of Space Industry to Meet the New Challenge
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《Aerospace China》 1996年第1期4-8,共5页
This paper discusses the urgency to further develop China’s space technological industry;analyzes the gaps between China and other advanced countries in space industry,including technological level,development scale,... This paper discusses the urgency to further develop China’s space technological industry;analyzes the gaps between China and other advanced countries in space industry,including technological level,development scale,application scope and investment;describes the current severe situation that the China’s space industry is faced with and proposes the overall objective,guiding principles and major tasks of China’s space technological sector in the Ninth-Five Year Plan and the coming decade.Finally,it proposes some policies and effective measures to speed up the development of China’s space industry to meet the challenge in the 21st century. 展开更多
关键词 In Speeding up the Development of space Industry to Meet the New Challenge
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DEVELOPMENT OF INTERNATIONAL SPACE COOPERATION OF CHINA
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作者 Mr. Qizhi He 《Aerospace China》 1995年第2期5-6,共2页
Mr. Chairman, distinguished colleagues and guests, ladies and gentlemen, It is a great pleasure, also a privilege for me to address this august body which is a high-level gathering attended by top experts of the world... Mr. Chairman, distinguished colleagues and guests, ladies and gentlemen, It is a great pleasure, also a privilege for me to address this august body which is a high-level gathering attended by top experts of the world and practitioners with authority in management, operational, business matters in both air and space utilization and their legal aspects. Your presence will undoubtedly increase the brilliance of 展开更多
关键词 In DEVELOPMENT OF INTERNATIONAL space COOPERATION OF CHINA
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The Development of china's Space Industry
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作者 DENG SHULIN 《China Today》 1994年第11期56-58,共3页
Now the China National Astronau-tics Industry Corporation is devcting more efforts to narrowing the gaps and has also begun research into manned satellites,which it hopes will be real-ized by the end of this century.
关键词 The Development of china’s space Industry
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The Achievements and the Future of the Development of China's Space Technology
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《Aerospace China》 1996年第1期24-29,共6页
China’s space cause is based on the development of missile technology. In the 1950s, new China, which was just founded, decided to keep pace with the jet technology times, to begin developing missile and rocket scien... China’s space cause is based on the development of missile technology. In the 1950s, new China, which was just founded, decided to keep pace with the jet technology times, to begin developing missile and rocket science and technology, and to establish China’s new space scientific and technological industry. 展开更多
关键词 The Achievements and the Future of the Development of China’s space Technology
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Development and Prospects of China's Space Technology——Will China's space technology be brilliant again at the turn of the century?
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作者 By Zhang Rufan 《Aerospace China》 1995年第2期27-30,共4页
For China,at the turn of the century,how to keep the position of the space power,how to stimulate the enthusiasm of the space technicians and how to keep pace with the world space technology,all of these questions lie... For China,at the turn of the century,how to keep the position of the space power,how to stimulate the enthusiasm of the space technicians and how to keep pace with the world space technology,all of these questions lie ahead of the Chinese people.So we may say China’s space industry now is in the key stage.If the space industry draws great attention from the central government and the people of the country,it will have a brilliant future in the 21st century.We should put our eyes on the 21st century and prepare to explore space resources.It is difficult for us to keep pace with the times if we do not explore space resources and try to earn "the money in space". 展开更多
关键词 very Will China’s space technology be brilliant again at the turn of the century Development and Prospects of China’s space Technology
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Analysis on the Protection of Settlement Shape in Sichuan 被引量:1
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作者 李红 周波 《Journal of Landscape Research》 2010年第2期67-70,共4页
This article elaborated the characteristics of settlement shape in detail with examples. Aiming at the negative effects on settlement shape by construction, we put forward some measures, such as respect for ecological... This article elaborated the characteristics of settlement shape in detail with examples. Aiming at the negative effects on settlement shape by construction, we put forward some measures, such as respect for ecological environment, selection mode of space development, protection of historical features, and excavation of culture connotation, so as to realize the protection of settlement shape. 展开更多
关键词 Settlement shape Spatial shape space development model
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SPACE CARGO TRANSPORT BAGS THROUGH MEMBRANE WATER TREATMENT ELEMENTS TO SPACE ARCHITECTURE BUILDING ELEMENT:A TOTAL PRODUCT SUSTAINABILITY AND LIFE CYCLE DESIGN OPTIMIZATION EXPERIMENT
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作者 Sherwin Gormly Michael Flynn A.Scott Howe 《Journal of Green Building》 2012年第1期71-84,共14页
The CTB Water Wall project is a maximal product life cycle utilization concept study by members of the space architecture design community.Its function is to demonstrate a human space activity Cargo Transport Bag(CTB)... The CTB Water Wall project is a maximal product life cycle utilization concept study by members of the space architecture design community.Its function is to demonstrate a human space activity Cargo Transport Bag(CTB)that becomes a primary water recycling membrane element after delivery of cargo,and then a permanent architectural building block for sustainable space habitation after its use in water treatment is complete.As such,it is intended as an experiment in radical life cycle product optimization in an extremely mass-constrained application environment(human space operations).It also introduces some fundamentally interesting concepts in architectural use of waste materials in extreme environments.Finally,it is in some ways a simple,tactile and visual demonstration of how far sustainable product design can be taken,if the motivation and technical justification are present. 展开更多
关键词 cargo transport bag space flight human space development space architecture product life cycle sustainable product design long-term life support sustainability architectural use of waste materials in extreme environments
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Influence of excavation beneath existing building on dynamic impedances of underpinning pile considering stress history
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作者 LIANG Fa-yun CAO Ping QIN Hong-yu 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第6期1870-1879,共10页
The addition of basement beneath existing building changes the underpinning pile from fully embedded to partially embedded,and thus influences the mechanical properties of pile.In the past,scholars paid attention to t... The addition of basement beneath existing building changes the underpinning pile from fully embedded to partially embedded,and thus influences the mechanical properties of pile.In the past,scholars paid attention to the change in the bearing capacity of pile but neglected the difference of dynamic characteristics before and after construction,and potential changes in stress history of remaining soil are also ignored.In this work,a calculation model is built to investigate the influence of excavation on dynamic impedance of underpinning pile considering the effect of stress history.The soil is simulated by the dynamic Winkler foundation,which is characterized by springs and dashpots.Properties of remaining soil after excavation are updated to consider the effect of stress history through modifying the initial shear modulus and related parameters.The dynamic impedance of pile after excavation is obtained based on the transfer matrix method.The parameter study is carried out to evaluate the dynamic impedance with various excavation depths,considering or ignoring stress history effect,and various element lengths.The results show that shallow soil plays an important role to dynamic impedance,and overestimated dynamic impedance is obtained if not considering the stress history effect. 展开更多
关键词 PILE transfer matrix method dynamic response stress history underground space development
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Study on Comparative Advantage of Plateau Characteristic Agriculture in Yunnan
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作者 Xiaobo DONG Liangzheng CHEN +3 位作者 Maoqing YANG Rui CHEN Ziyun PENG Yuan YUAN 《Asian Agricultural Research》 2016年第8期60-65,共6页
To find the highlighted advantage and development space of plateau characteristic agriculture in Yunnan,using qualitative and quantitative combining methods,comparative advantage of plateau characteristic agriculture ... To find the highlighted advantage and development space of plateau characteristic agriculture in Yunnan,using qualitative and quantitative combining methods,comparative advantage of plateau characteristic agriculture in Yunnan is evaluated comprehensively.Qualitation takes Sichuan,Chongqing,Guizhou and Guangxi adjacent to Yunnan and Southeast Asian countries which are opening focus of " bridgehead" as reference objects,while quantitation takes 32 provinces of whole country except Hongkong and Macao as reference objects,and there are 4 kinds of qualitation indexes and 6 kinds of quantitation indexes containing 44 sub-items.Results show that comprehensive comparative advantage coefficient of plateau characteristic agriculture in Yunnan is 1.55,and it has 3 kinds of comprehensive comparative advantages:diversity,ecological security and time difference complementation.The research results could provide references for agricultural development in Yunnan and other plateau regions. 展开更多
关键词 Plateau characteristic agriculture Comparative advantage Development space
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Distributed Control Technology for Air and Missile Defence Operations
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作者 Peter Simon Sapaty 《International Relations and Diplomacy》 2022年第4期141-157,共17页
This paper relates to accepted presentation at international conference Air and Missile Defence Technology,November 16-17,2022,London UK(day two),reflecting contents of the presentation slides.It describes application... This paper relates to accepted presentation at international conference Air and Missile Defence Technology,November 16-17,2022,London UK(day two),reflecting contents of the presentation slides.It describes applications of the patented and internationally tested Spatial Grasp Technology(SGT)and its Spatial Grasp Language(SGL)for Integrated Air and Missile Defense(IAMD).Based on holistic space navigation and processing by recursive mobile code self-spreading in distributed words,SGT differs radically from traditional management of large systems as consisting of parts exchanging messages.The dynamic network of SGL interpreters can be arbitrarily large and cover terrestrial and celestial environments as powerful spatial engines.The paper contains an example of tracking and destruction of multiple cruise missiles by self-evolving spatial intelligence in SGL using networks of radar stations.It also briefs the growing multiple satellite constellation in Low Earth Orbits(LEO)for potential IAMD applications.Starting from Strategic Defense Initiative(SDI)of the past and then briefing the latest project of Space Development Agency,the paper shows SGL solutions for discovery,tracking,and destroying ballistic missiles and hypersonic gliders with the use of collectively behaving constellations of LEO satellites.It also shows how to organize higher levels of supervision of groups of mobile chasers fighting multiple targets(both potentially as missiles or drones),by providing their global awareness even consciousness in SGL which can drastically improve their performance.The latest version of SGT can be implemented on any platforms and put into operation in a short time,similarly to its previous versions in different countries. 展开更多
关键词 air and missile defense radar networks satellite constellations Strategic Defense Initiative(SDI) space Development Agency hypersonic gliders Spatial Grasp Technology(SGT) Spatial Grasp Language(SGL) global awareness
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Application for developing countries:Estimating trip attraction in urban zones based on centrality 被引量:1
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作者 Amila Jayasinghe Kazushi Sano Kasemsri Rattanaporn 《Journal of Traffic and Transportation Engineering(English Edition)》 2017年第5期464-476,共13页
This paper introduced a network centrality-based method to estimate the volume of trip attraction in traffic analysis zones. Usually trip attraction volumes are estimated based on land use characteristics. However, ex... This paper introduced a network centrality-based method to estimate the volume of trip attraction in traffic analysis zones. Usually trip attraction volumes are estimated based on land use characteristics. However, executing of land use-based trip attraction models are severely constrained by the lack of updated land use data in developing countries. The proposed method used network centrality-based explanatory variables as "connectivity", "local integration" and "global integration". Space syntax tools were used to compute the centrality of road segments. GIS-based kernel density estimation method was used to transform computed road segrnent-based centrality values into traffic analysis zone. Trip attraction values exhibited significant high correlation with connectivity, global and local integration values. The study developed and validated model to estimate trip attraction by using connectivity, local integration and global integration values as endogenous variables with an accepted level of accuracy (R2 〉 0.75). The proposed approach required minimal data, and it was easily executed using a geographic information system. The study rec- ommended the proposed method as a practical tool for transport planners and engineers, especially who work in developing countries and where updated land use data is unavailable. 展开更多
关键词 Trip attraction Centrality space syntax Land use developing country
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