期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
城市用地“3D”发展模式研究——一种基于减少机动化需求的规划理念 被引量:10
1
作者 周文竹 阳建强 +1 位作者 葛天阳 徐晨 《城市规划》 CSSCI 北大核心 2012年第10期51-57,共7页
基于我国当前城市空间蔓延、功能分区单一以及"以车为本"的场所设计带来的个体机动化出行增加、公共交通效率低下、步行环境欠佳等问题,提出需要建立沿公交走廊的密度点轴结合发展(density)、用地混合多元布局(diversity)以... 基于我国当前城市空间蔓延、功能分区单一以及"以车为本"的场所设计带来的个体机动化出行增加、公共交通效率低下、步行环境欠佳等问题,提出需要建立沿公交走廊的密度点轴结合发展(density)、用地混合多元布局(diversity)以及步行友好场所设计(design)的用地"3D"发展模式,以减少机动化出行需求。在此思路下,借鉴香港地区轨道沿线用地发展经验,研究香港实现"3D"模式的具体方法与措施,并以广州花都CBD为例,运用"3D"理念,对花都CBD内轨道沿线的用地密度、混合度、场所进行规划设计,以探索城市用地"3D"发展模式在我国发展的适应性。 展开更多
关键词 开发密度 混合度 场所设计 机动 化需求 “3d”模式
下载PDF
Expert System for 3D Collar Intelligent Design
2
作者 刘雁 耿兆丰 《Journal of Donghua University(English Edition)》 EI CAS 2004年第5期27-32,共6页
A method to set up 3D collar prototype is developed in this paper by using the technique of cubic spline and bicubic surface patch. Then the relationship between the parameters of 3D collar prototype and different col... A method to set up 3D collar prototype is developed in this paper by using the technique of cubic spline and bicubic surface patch. Then the relationship between the parameters of 3D collar prototype and different collar styles are studied. Based on the relationship, we can develop some algorithms of transferring style requirements to the parameters value of the collar prototype, and obtain some generation rules for the design of 3D collar style. As such, the knowledge base can be constructed, and the intelligent design system of 3D collar style is built. Using the system, various 3D collar styles can be designed automatically to satisfy various style requirements. 展开更多
关键词 3d modeling intelligent design style knowledge COLLAR
下载PDF
Molecular Cloning, Expression Pattern, and 3D Structural Prediction of the Cold Inducible RNA- Binding Protein(CIRP) in Japanese Flounder(Paralichthys olivaceus)
3
作者 YANG Xiao GAO Jinning +8 位作者 MA Liman LI Zan WANG Wenji WANG Zhongkai YU Haiyang QI Jie WANG Xubo WANG Zhigang ZHANG Quanqi 《Journal of Ocean University of China》 SCIE CAS 2015年第1期161-170,共10页
Cold-inducible RNA-binding protein(CIRP) is a kind of RNA binding proteins that plays important roles in many physiological processes. The CIRP has been widely studied in mammals and amphibians since it was first clon... Cold-inducible RNA-binding protein(CIRP) is a kind of RNA binding proteins that plays important roles in many physiological processes. The CIRP has been widely studied in mammals and amphibians since it was first cloned from mammals. On the contrary, there are little reports in teleosts. In this study, the Po CIRP gene of the Japanese flounder was cloned and sequenced. The genomic sequence consists of seven exons and six introns. The putative Po CIRP protein of flounder was 198 amino acid residues long containing the RNA recognition motif(RRM). Phylogenetic analysis showed that the flounder Po CIRP is highly conserved with other teleost CIRPs. The 5' flanking sequence was cloned by genome walking and many transcription factor binding sites were identified. There is a Cp Gs region located in promoter and exon I region and the methylation state is low. Quantitative real-time PCR analysis uncovered that Po CIRP gene was widely expressed in adult tissues with the highest expression level in the ovary. The m RNA of the Po CIRP was maternally deposited and the expression level of the gene was regulated up during the gastrula and neurula stages. In order to gain the information how the protein interacts with m RNA, we performed the modeling of the 3D structure of the flounder Po CIRP. The results showed a cleft existing the surface of the molecular. Taken together, the results indicate that the CIRP is a multifunctional molecular in teleosts and the findings about the structure provide valuable information for understanding the basis of this protein's function. 展开更多
关键词 cold-inducible RNA-binding protein CIRP Paralichthys olivaceus expression pattern 3d modeling CpGs
下载PDF
Methodology of High Accuracy and Resolution 3D Geological Model Generation and Application
4
作者 吴键 曹代勇 +3 位作者 邓爱居 李东津 蒋涛 翟光华 《Journal of China University of Mining and Technology》 2004年第1期47-50,共4页
By generating a high accuracy and high resolution geological model in Liuchu oil field, the technique of geological modeling is expanded and involved in primary geological study, making the sand bodies and reservoir b... By generating a high accuracy and high resolution geological model in Liuchu oil field, the technique of geological modeling is expanded and involved in primary geological study, making the sand bodies and reservoir be easily described in detail. The 3D visualization and 3D interactive editing of geological structure model are the key for modeling procedure. And a high accuracy and resolution geological model has been well applied in optimizing the production scheme. 展开更多
关键词 high accuracy and resolution 3d visualization interactive editing production scheme
下载PDF
Developments of spatial information-based Digital Mine in China 被引量:3
5
作者 吴立新 车德福 《Journal of Coal Science & Engineering(China)》 2008年第3期415-419,共5页
Gave a brief introduction to the origin,concepted and hierarchical structure of Digital Mine.As a huge complex system,Digital Mine took data base and model base to- gether as a mine data management system being its co... Gave a brief introduction to the origin,concepted and hierarchical structure of Digital Mine.As a huge complex system,Digital Mine took data base and model base to- gether as a mine data management system being its core,and Digital Mine was com- prised of five subsystems including data obtaining system,integral dispatching system, applied engineering system,data processing system,and data management system.Be- ing a digitally 3D visualized representation and a spatial information infrastructure of an actual mine,Digital Mine had three basic features such as data warehouse,information reference and digital platform.The present developments of Digital Mine in mining industry, research and education were also introduced.Examples were shown for present Digital Mine construction in China.The development trends,the key technologies and the recent construction procedures on Digital Mine were presented. 展开更多
关键词 digital Mine spatial information infrastructure 3d geosciences modeling mine geo-information system digital 3d-platform
下载PDF
Formal Definition of a User-Adaptive and Length-Optimal Routing Graph for Complex Indoor Environments 被引量:8
6
作者 GOETZ Marcus ZIPF Alexander 《Geo-Spatial Information Science》 2011年第2期119-128,共10页
Car routing solutions are omnipresent and solutions for pedestrians also exist.Furthermore,public or commercial buildings are getting bigger and the complexity of their internal structure has increased.Consequently,th... Car routing solutions are omnipresent and solutions for pedestrians also exist.Furthermore,public or commercial buildings are getting bigger and the complexity of their internal structure has increased.Consequently,the need for indoor routing solutions has emerged.Some prototypes are available,but they still lack semantically-enriched modelling (e.g.,access constraints,labels,etc.) and are not suitable for providing user-adaptive length-optimal routing in complex buildings.Previous approaches consider simple rooms,concave rooms,and corridors,but important characteristics such as distinct areas in huge rooms and solid obstacles inside rooms are not considered at all,although such details can increase navigation accuracy.By formally defining a weighted indoor routing graph,it is possible to create a detailed and user-adaptive model for route computation.The defined graph also contains semantic information such as room labels,door accessibility constraints,etc.Furthermore,one-way paths inside buildings are considered,as well as three-dimensional building parts,e.g.,elevators or stairways.A hierarchical structure is also possible with the presented graph model. 展开更多
关键词 3d indoor navigation 3d indoor routing city modelling formal definition routing graph BUILdINGS
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部