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怎样用物性结构知识解决“网球问题”? 被引量:12
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作者 袁毓林 李强 《中文信息学报》 CSCD 北大核心 2014年第5期1-12,23,共13页
"网球问题"指怎样把racquet(网球拍)、ball(网球)和net(球网)之类具有情境联想关系的词汇概念联系起来、发现它们之间的语义和推理关系。这是一个自然语言处理和相关的语言知识资源建设的世界性难题。该文以求解"网球问... "网球问题"指怎样把racquet(网球拍)、ball(网球)和net(球网)之类具有情境联想关系的词汇概念联系起来、发现它们之间的语义和推理关系。这是一个自然语言处理和相关的语言知识资源建设的世界性难题。该文以求解"网球问题"为目标,对目前比较主流的几种语言词汇和概念知识库系统(包括WordNet、VerbNet、FrameNet、ConceptNet等)进行检讨,指出它们在解决"网球问题"上还都存在一定的局限性,着重分析它们为什么不能解决"网球问题"。进而指出基于生成词库论的名词物性结构知识描写体系可以解决"网球问题",主张用名词的物性结构知识和相关的句法组合知识来构建一种以名词(实体)为核心的词汇概念网络,以弥补上述几种知识库系统的不足,为自然语言处理提供一种可资参考的词汇概念知识库体系。 展开更多
关键词 “网球问题” WORDNET VerbNet FRAMENET ConceptNet 物性结构
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对上海地区“网球热”现象的社会学分析 被引量:4
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作者 王莹莹 《湖北体育科技》 2009年第4期406-407,共2页
通过对上海开展网球运动成功案例的研究,从社会学视角对上海地区出现"网球热"现象进行分析。
关键词 上海 “网球热” 社会学
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“网球训练器”创新高校网球教学模式 被引量:5
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作者 刘玉晓 《电子制作》 2015年第6X期197-,共1页
网球作为一种时尚与高雅兼具的体育运动,已经作为一门体育课程在高校中广泛开设。但是,受网球自身原因的限制,学生在有限的课堂时间内,并不能掌握网球的动作要领。"网球训练器"的出现为解决这种局面提供了机遇。将"网球... 网球作为一种时尚与高雅兼具的体育运动,已经作为一门体育课程在高校中广泛开设。但是,受网球自身原因的限制,学生在有限的课堂时间内,并不能掌握网球的动作要领。"网球训练器"的出现为解决这种局面提供了机遇。将"网球训练器"引入高校网球教学,一方面可以激发学生学习的积极性、主动性,提高学生的学习兴趣,在另一方面可以使学生更好的掌握网球的动作要领,提高高校网球教学水平。本文主要研究"网球训练器"在高校教学中的应用对高校网球教学带来的积极作用。 展开更多
关键词 “网球训练器” 网球教学 教学模式 积极作用
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基于VB的球面网壳施工控制系统设计
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作者 丛术平 王来 王庆林 《电脑开发与应用》 2014年第9期4-7,共4页
根据球面网壳的施工特点,采用VB6.0编制了球面网壳施工控制系统。根据系统的数据特点,采用MicrosoftExcel作为数据库。使用OLE控件调用AutoCAD软件,绘制三维结构模型图。使用Image控件和Line控件设计工具栏。系统根据施工误差对施工时... 根据球面网壳的施工特点,采用VB6.0编制了球面网壳施工控制系统。根据系统的数据特点,采用MicrosoftExcel作为数据库。使用OLE控件调用AutoCAD软件,绘制三维结构模型图。使用Image控件和Line控件设计工具栏。系统根据施工误差对施工时可能出现的问题进行预警,有利于提高球面网壳的施工质量。 展开更多
关键词 AUTOCAD EXCEL 施工控制
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Design for CNN Templates with Performance of Global Connectivity Detection 被引量:9
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作者 LIUJin-Zhu MINLe-Quan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第1期151-156,共6页
The cellular neural/nonlinear network (CNN) is a powerful tool for image and video signal processing,robotic and biological visions. This paper discusses a general method for designing template of the global connectiv... The cellular neural/nonlinear network (CNN) is a powerful tool for image and video signal processing,robotic and biological visions. This paper discusses a general method for designing template of the global connectivitydetection (GCD) CNN, which provides parameter inequalities for determining parameter intervals for implementing thecorresponding functions. The GCD CNN has stronger ability and faster rate for determining global connectivity in binarypatterns than the GCD CNN proposed by Zarandy. An example for detecting the connectivity in complex patterns isgiven. 展开更多
关键词 cellular neural network global connectivity detection template parameters
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Web Page Watermarking for Tamper-Proof 被引量:2
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作者 赵启军 卢宏涛 蒋晓华 《Journal of Shanghai Jiaotong university(Science)》 EI 2005年第3期280-284,共5页
This paper proposed a watermarking algorithm for tamper-proof of web pages. For a web page, it generates a watermark consisting of a sequence of Space and Tab. The wa termark is then embedded into the web page after e... This paper proposed a watermarking algorithm for tamper-proof of web pages. For a web page, it generates a watermark consisting of a sequence of Space and Tab. The wa termark is then embedded into the web page after each word and each line. When a watermarked web page is tampered, the extracted watermark can detect and locate the modifications to the web page. Besides, the framework of watermarked Web Server system was given. Compared with traditional digital signature methods, this watermarking method is more transparent in that there is no necessary to detach the watermark before displaying web pages. The e xperimental results show that the proposed scheme is an effective tool for tamper-proof of web pages. 展开更多
关键词 web page WATERMARKING hypertext markup language(HTML) tamper-proof
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From the Far Side of the Moon: Delay/DisruptionTolerant Networking Communications via Lunar Satellites 被引量:2
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作者 Pietrofrancesco Apollonio Carlo Caini Vincenzo Fiore 《China Communications》 SCIE CSCD 2013年第10期12-25,共14页
Delay/Disruption-Tolerant Networking(DTN) originated from research on Interplanetary Internet and still today space applications are the most important application field and research stimulus. This paper investigates ... Delay/Disruption-Tolerant Networking(DTN) originated from research on Interplanetary Internet and still today space applications are the most important application field and research stimulus. This paper investigates DTN communications between the Earth and the far side of the Moon, by means of a lunar orbiter acting as relay. After an introductory part, the paper presents a comprehensive analysis of the DTN performance that can be achieved on the identified communication scenario. The focus is on the evaluation of the stateof-the-art ability of Interplanetary Overlay Network(ION), the NASA DTN implementation of Bundle Protocol(BP) and Contact Graph Routing(CGR), to meet the many challenges of the space communication scenario investigated(and more generally of a future interplaynetary Internet): intermittent links, network partitioning, scarce bandwidth, long delays, dynamic routing, handling of high priority and emergency traffic, interoperability issues. A study of security threats and Bundle Security Protocol(BSP) countermeasures complete the work.The many results provided, confirm the essential role of DTN in future space communications. 展开更多
关键词 DTN Earth to Moon communications interplanetary Interact satellite communications space communications
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Model Warehouse 被引量:3
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作者 YU Zhiwen 《Geo-Spatial Information Science》 2003年第1期62-65,共4页
This paper puts forward a new conception:model warehouse,analyzes the reason why model warehouse appears and introduces the characteristics and architecture of model warehouse.Last,this paper points out that model war... This paper puts forward a new conception:model warehouse,analyzes the reason why model warehouse appears and introduces the characteristics and architecture of model warehouse.Last,this paper points out that model warehouse is an important part of WebGIS. 展开更多
关键词 model warehouse MODEL INTEGRATION Web GIS
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Quantitative analysis of globularization and modeling of TC17 alloy with basketweave microstructure 被引量:2
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作者 Hao-yu PANG Jiao LUO +3 位作者 Zhi-gang ZHANG Wen-chao HAN Keng-feng XU Miao-quan LI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第3期850-867,共18页
The globularization behavior and mechanism of TC17 alloy with basketweave microstructure were investigated, and the models of dynamic and static globularization kinetics were established. The quantitative and metallog... The globularization behavior and mechanism of TC17 alloy with basketweave microstructure were investigated, and the models of dynamic and static globularization kinetics were established. The quantitative and metallographic results show that the globularization of α phase is sensitive to the parameters of deformation and heat treatment. By EBSD analysis, the formation and evolution mechanisms of intra-α boundaries are related to discontinuous dynamic recrystallization and continuous dynamic recrystallization, which can form α grains with high and low misorientations between neighbour grains after the heat treatment, respectively. Based on the globularization behavior and mechanism, two modified JMAK models are developed to predict the dynamic and static globularization kinetics, and the mean absolute relative errors(MARE) of 10.67% and 13.80% indicate the accuracy of the dynamic and static globularization kinetics models. The results of this work can provide guidance for controlling microstructure of titanium alloy. 展开更多
关键词 TC17 alloy basketweave microstructure globularization quantitative analysis kinetics model
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Spatial differentiation in stable isotope compositions of surface waters and its environmental significance in the Issyk-Kul Lake region of Central Asia 被引量:2
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作者 MA Long JILILI Abuduwaili LI Yao-ming 《Journal of Mountain Science》 SCIE CSCD 2018年第2期254-263,共10页
Stable isotope values of oxygen (180) and hydrogen (2H) of surface waters were used to study the origin and environmental significanees in the Issyk-Kul basin of Kyrgyzstan in Central Asia, which is the most impor... Stable isotope values of oxygen (180) and hydrogen (2H) of surface waters were used to study the origin and environmental significanees in the Issyk-Kul basin of Kyrgyzstan in Central Asia, which is the most important intermountain basin in the modern Tien Shan orogen. This study is the first analysis of hydrochemical spatial differentiation in the stable isotopes of surface waters in this watershed. 75 samples were collected from rivers, springs, lakes, rain and snow during the rainy season in July and August of 2o16. Stable isotopes of 180 and 2H were studied for all samples, and cation ratios (Sr/Ca and Mg/Ca) were also determined for lake water samples. Stable isotope values from precipitation scattered around the Local Meteoric Water Line (determined from Urumqi Station of the global network of isotopes in precipitation (GNIP)), together with values of the Deuterium excess parameter (d) from 15.3‰ to 30.5‰, with an average of 19.8‰, indicating that the moisture sources are primarily from regions with low relative humidity. The 8180 and 52H values were significantly different between the river and lake samples, indicating that regional evaporation caused the isotopic enrichment of lake water. Geospatial autocorrelation, measured by Moran's I coefficient, indicated weak spatial autocorrelation within stable isotopes of oxygen and hydrogen in the surface waters of the studied area, which is primarily an effect of climate during the water chemistry evolution. The cation ratios Sr/Ca and Mg/Ca in lake water samples were not correlated with the concentration of total dissolved solids, but did show correlation with stable isotopic values, which is significant for paleoenvironmental reconstruction. 展开更多
关键词 Spatial differentiation Stable isotope Moisture Sources Geospatial autocorrelation IssykKul Lake Central Asia
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Quality Diagnosis of BtoC Website Based on Fuzzy Comprehensive Evaluation 被引量:1
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作者 陈梅梅 汤兵勇 +2 位作者 程升 王臣 周莉 《Journal of Donghua University(English Edition)》 EI CAS 2006年第3期106-109,共4页
A hl-quality website is crucial to a company for a successful e-business. The technique maintainers are always faced with the problem how to locate the prime factors which affect the quality of the websites. In view o... A hl-quality website is crucial to a company for a successful e-business. The technique maintainers are always faced with the problem how to locate the prime factors which affect the quality of the websites. In view of the complexity and fuzziness of BtoC webslte, a quality diagnosis method based on the multl-attribute and multi-layer fuzzy comprehensive evaluation model including all the quality factors is proposed. A simple example of diagnosis on a famous domestic BtoC websites shows the specific steps of this method and proves its validity. The process of quality evaluation and diagnosis system is illustrated and the computer program of diagnosis is Oven. 展开更多
关键词 electronic business WEBSITE quality diagnosis fuzzy comprehensive evaluation.
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Acupuncture Treatment of Superficial Pain by Subcutaneous Needling
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作者 邬水兰 朱剑文 +1 位作者 公维军 毛树章 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2002年第2期117-118,共2页
  Subcutaneous needling is an old art of the 'twelve needling methods' in TCM for treating arthralgia due to cold or disorders in the superficial tissues. Some cases are effectively treated as introduced bel...   Subcutaneous needling is an old art of the 'twelve needling methods' in TCM for treating arthralgia due to cold or disorders in the superficial tissues. Some cases are effectively treated as introduced below.…… 展开更多
关键词 Acupuncture Therapy ADULT Humans MALE Middle Aged Soft Tissue Injuries Tennis Elbow TENOSYNOVITIS
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Improved sweat gland function during active heating in tennis athletes
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作者 Jeong-Beom Lee Soon-Bok Na Tae-Wook Kim 《Journal of Sport and Health Science》 SCIE 2016年第4期443-447,共5页
Background:Relatively few studies on the peripheral sweating mechanisms of trained tennis athletes have been conducted.The purpose of this study was to compare the sweating capacities of tennis athletes against untra... Background:Relatively few studies on the peripheral sweating mechanisms of trained tennis athletes have been conducted.The purpose of this study was to compare the sweating capacities of tennis athletes against untrained subjects(controls).Methods:Thirty-fi e healthy male volunteers participated including 15 untrained subjects and 20 trained tennis athletes(nationally ranked).Active heat generation was performed for 30 min(running at 60%VO2max) in a climate chamber(temperature,25.0°C ± 0.5°C;relative humidity,60% ± 3%,termed active heating).Sweating data(local sweat onset time,local sweat volume,activated sweat glands,sweat output per gland,whole body sweat loss volume) were measured by the capacitance hygrometer-ventilated capsule method and starch-iodide paper.Mean body temperature was calculated from tympanic and skin temperatures.Results:Local sweat onset time was shorter for tennis athletes(p〈0.001).Local sweat volume,activated sweat glands of the torso and limbs,sweat output per gland,and whole body sweat loss volume were significant y higher for tennis athletes than control subjects after active heating(p〈0.001).Tympanic and mean body temperatures were lower among tennis athletes than controls(p〈0.05).Conclusion:These results indicate that tennis athletes had increased regulatory capacity of their sweat gland function. 展开更多
关键词 Activated sweat glands Active heating Sweat onset time Sweat output Sweating function Tennis athletes
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AN INTEGRATED APPROACH FOR PRODUCTION-DISTRIBUTION NETWORK DEPLOYMENT
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作者 郭伟 杨天剑 +1 位作者 于鸿彬 董志林 《Transactions of Tianjin University》 EI CAS 2000年第2期152-156,共页
An integrated approach for new vehicle program launching and associated manufacturing systems deployment,is presented in this paper.To overcome weaknesses and difficulties in the traditional production distribution (P... An integrated approach for new vehicle program launching and associated manufacturing systems deployment,is presented in this paper.To overcome weaknesses and difficulties in the traditional production distribution (PD) network models,the case based reasoning is first applied to generate an initial network configuration based on the collected localization case base.Secondly,and economic model of performance evaluation of existing manufacturing facilities is developed to identify the advantages in location sensitive production factors for various components in order to take full advantages of local and global production factors.Finally,a modified PD model is developed to optimize the overall network deployment.Various deployment scenarios,such as minimizing manufacturing cost,maximizing profitability or promotion of early market entry,can be analyzed and testified.A typical case study of launching a new vehicle program in China is also presented to demonstrate the effectiveness and feasibility of the proposed approach. 展开更多
关键词 global manufacturing production-distribution network automotive industry
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Three-Dimensional TIN Algorithm for Digital Terrain Modeling 被引量:7
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作者 ZHU Qing ZHANG Yeting LI Fengchun 《Geo-Spatial Information Science》 2008年第2期79-85,共7页
The problem of taking an unorganized point cloud in 3D space and fitting a polyhedral surface to those points is both important and difficult. Aiming at increasing applications of full three dimensional digital terrai... The problem of taking an unorganized point cloud in 3D space and fitting a polyhedral surface to those points is both important and difficult. Aiming at increasing applications of full three dimensional digital terrain surface modeling, a new algorithm for the automatic generation of three dimensional triangulated irregular network from a point cloud is pro- posed. Based on the local topological consistency test, a combined algorithm of constrained 3D Delaunay triangulation and region-growing is extended to ensure topologically correct reconstruction. This paper also introduced an efficient neighbor- ing triangle location method by making full use of the surface normal information. Experimental results prove that this algo- rithm can efficiently obtain the most reasonable reconstructed mesh surface with arbitrary topology, wherein the automati- cally reconstructed surface has only small topological difference from the true surface. This algorithm has potential applica- tions to virtual environments, computer vision, and so on. 展开更多
关键词 three dimensional triangulated irregular network digital terrain surface modeling Delaunay triangulation
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Cross-Layer Design and Ant-Colony Optimization Based Routing Algorithm for Low Earth Orbit Satellite Networks 被引量:5
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作者 王厚天 张琦 +2 位作者 忻向军 陶滢 刘乃金 《China Communications》 SCIE CSCD 2013年第10期37-46,共10页
To improve the robustness of the Low Earth Orbit(LEO) satellites networks and realise load balancing, a Cross-layer design and Ant-colony optimization based Load-balancing routing algorithm for LEO Satellite Networks(... To improve the robustness of the Low Earth Orbit(LEO) satellites networks and realise load balancing, a Cross-layer design and Ant-colony optimization based Load-balancing routing algorithm for LEO Satellite Networks(CAL-LSN) is proposed in this paper. In CALLSN, mobile agents are used to gather routing information actively. CAL-LSN can utilise the information of the physical layer to make routing decision during the route construction phase. In order to achieve load balancing, CALLSN makes use of a multi-objective optimization model. Meanwhile, how to take the value of some key parameters is discussed while designing the algorithm so as to improve the reliability. The performance is measured by the packet delivery rate, the end-to-end delay, the link utilization and delay jitter. Simulation results show that CAL-LSN performs well in balancing traffic load and increasing the packet delivery rate. Meanwhile, the end-to-end delay and delay jitter performance can meet the requirement of video transmission. 展开更多
关键词 ant-colony algorithm cross-layer design LEO satellite networks load balancing Quality of Service
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A hybrid neural network model for consciousness
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作者 蔺杰 金小刚 杨建刚 《Journal of Zhejiang University Science》 CSCD 2004年第11期1440-1448,共9页
A new framework for consciousness is introduced based upon traditional artificial neural network models. This framework reflects explicit connections between two parts of the brain: one global working memory and dist... A new framework for consciousness is introduced based upon traditional artificial neural network models. This framework reflects explicit connections between two parts of the brain: one global working memory and distributed modular cerebral networks relating to specific brain functions. Accordingly this framework is composed of three layers, physical mnemonic layer and abstract thinking layer, which cooperate together through a recognition layer to accomplish information storage and cognition using algorithms of how these interactions contribute to consciousness: (1) the reception process whereby cerebral subsystems group distributed signals into coherent object patterns; (2) the partial recognition process whereby patterns from particular subsystems are compared or stored as knowledge; and (3) the resonant learning process whereby global workspace stably adjusts its structure to adapt to patterns’ changes. Using this framework, various sorts of human actions can be explained, leading to a general approach for analyzing brain functions. 展开更多
关键词 Neural network Global workspace CONSCIOUSNESS
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Damage mechanism of single-layer reticulated domes under severe earthquakes 被引量:1
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作者 于晓野 范峰 +1 位作者 支旭东 沈世钊 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2009年第1期121-130,共10页
To study the damage mechanism of single-layer reticulated domes subject to severe earthquakes, three limit states of single-layer reticulated domes under earthquakes are defined firstly in this paper. Then, two failur... To study the damage mechanism of single-layer reticulated domes subject to severe earthquakes, three limit states of single-layer reticulated domes under earthquakes are defined firstly in this paper. Then, two failure modes are presented by analyzing damage behaviors, and their characteristics are pointed out respectively. Furthermore, the damage process is analyzed and the causes of structural damage in different levels are studied. Finally, by comparing deformation and vibration status of domes with different failure modes, the principles of different failures are revealed and an integrated frame of damage mechanism is set up. 展开更多
关键词 single-layer reticulated domes severe earthquakes damage mechanism limit states failure modes
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EXTERNAL SOURCES OF URBAN COMPETITIVE ADVANTAGES IN CHINA
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作者 YUTao-fang GUChao-lin CHENXiu-ying 《Chinese Geographical Science》 SCIE CSCD 2005年第2期95-102,共8页
Urban competition refers to capacities of cities for attracting, capturing, controlling, dominating and transforming certain resources during urban development, and capacities for wealth creating, life-standard improv... Urban competition refers to capacities of cities for attracting, capturing, controlling, dominating and transforming certain resources during urban development, and capacities for wealth creating, life-standard improving and sustainable development maintenance. This paper first analyzes the external sources of urban competitive advantages: the global network-based advantages and the location-based ones. Then with the aid of method of principal component analysis in SPSS 10.0 for Windows, the Chinese urban global and local competitive advantages are explored. The finding is that the global network-and location-based advantages are remarkable for the cities in the eastern China. While for those in the western and the middle regions, affected by much lower regional competitive advantages and lower degrees of urban-regional integration, the urban competitive advantages are deeply influenced and weakened. 展开更多
关键词 urban competitiveness global network-based advantages location-based advantages Chinese cities
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Predator perception of detritus and eggsac decorations spun by orb-web spiders Cyclosa octotuberculata:Do they function to camouflage the spiders? 被引量:2
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作者 Wenjin GAN Fengxiang LIU +1 位作者 Zengtao ZHANG Daiqin LI 《Current Zoology》 SCIE CAS CSCD 北大核心 2010年第3期379-387,共9页
Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or ... Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or eggsacs to their webs called web decorations. Web decorations resembling spider body colour pattern have been considered to camouflage the spider from predators. While this camouflage is obvious from a human's perspective, it has rarely been investigated from a predator's perspective. In this study, we tested the visibility of web decorations by calculating chromatic and achromatic contrasts of detritus and eggsae decorations built by Cyclosa octotubereulata, against four different backgrounds viewed by both bird (e.g., blue tits) and hymenopteran (e.g. wasps) predators. We showed that both juvenile and adult spiders on webs with detritus or egg-sac deco- rations were undetectable by both hymenopteran and bird predators over short and long distances. Our results thus suggest that decorating webs with detritus or eggsacs by C octotuberculata may camouflage the spiders from both hymenopteran and bird predators in their common habitats [Current Zoology 56 (3): 379-387, 2010]. 展开更多
关键词 SPIDER Web decorations Cyclosa octotuberculata CAMOUFLAGE Chromatic contrast Achromatic contrast
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