Filters








21,800 Hits in 4.4 sec

Issues of GIS data management

Tomáš Richta
2006 Geoinformatics FCE CTU  
CAD systems are oriented towards modeling individual man-made objects and structures with relatively high level of detail, so the data stored covers small areas with huge amount of information.  ...  As a case study for explaining the problem, we use comparison of two main groups of software tools covering this area GIS and CAD systems -and the posibilities of their integration.  ...  As would be seen the object-oriented approach provide a number of mechanisms to model real objects in a natural way. 3D GIS data management As a last issue we have to describe the 3D GIS data management  ... 
doi:10.14311/gi.1.6 fatcat:nif77pgqrnfm5dqi55rkt2ofde

An Application of Object-Oriented Technology to Unified Life Cycle Engineering [chapter]

S. J. Wormley, H. Shah, D. Sheth, B. Forouraghi, L. W. Schmerr
1993 Review of Progress in Quantitative Nondestructive Evaluation  
critical components and systems, thereby providing a realistic framework for design optimization.  ...  for stress/fracture analysis, life cycle reliability and cost modeling, and computer and expert system (AI) networking.  ...  ACKNOWLEDGMENTS This work was supported by the Center for Nondestructive Evaluation (CNDE), Iowa State University.  ... 
doi:10.1007/978-1-4615-2848-7_103 fatcat:flqf5bn5tfh4vmh2hqwl4iw6wm

Step to improved CAD

Henry Baumgartner
1999 Computer Standards & Interfaces  
CAD Using a standard that enables complete product model data to be transmitted digitally, a company can build open systems to make information available on many platforms throughout its operations.  ...  both data and methods for operating on the data.  ...  object-oriented techniques.  ... 
doi:10.1016/s0920-5489(99)90805-x fatcat:3c2qvcelcjfaxbqyny5psotcxu

Page 86 of American Society of Civil Engineers. Collected Journals Vol. 118, Issue CP1 [page]

1992 American Society of Civil Engineers. Collected Journals  
At the level of data types, object-oriented data-base management systems (OODBMS) present an opportunity to provide greater concurrency than more traditional approaches allow (Weihl 1988).  ...  The present work studies how object- oriented tools may be used to build transaction-management frameworks for collaborative engineering such as those proposed for DICE.  ... 

Innovative Design Process and Information Technology for Electromechanical Product Development

Koichi Ohtomi, Masanori Ozawa
2002 Concurrent Engineering - Research and Applications  
The business segment of Japanese companies such as Toshiba changed drastically for the last several years.  ...  This paper presents examples of design technologies that realize the innovative product development process in Toshiba focused on an electromechanical product development.  ...  In the mechanical design, Express, which represents STEP, is an object-oriented model description language.  ... 
doi:10.1177/a032003 fatcat:plf2d4kzx5h4plnj5bxqqswbye

A Feature-oriented Database Framework for Web-based CAx Applications

S.-H. Tang, Y.-S. Ma, G. Chen
2004 Computer-Aided Design and Applications  
In this paper, a multi-application and feature-oriented database framework for web-based CAx applications is proposed based on client-server architecture.  ...  The generic feature representation and geometrical data representation in database is given on the basis of the proposed mapping mechanisms.  ...  Database server The database server provides physical storage for all kinds of data including product model data, security management data and so on.  ... 
doi:10.1080/16864360.2004.10738250 fatcat:mgmxfnfynjaexlytdpwjadnoqm

Page 368 of American Society of Civil Engineers. Collected Journals Vol. 118, Issue CP3 [page]

1992 American Society of Civil Engineers. Collected Journals  
ACM Trans. on Database Systems, 2(2), 105-133. Spooner, D. L., Milicia, M. A., and Faatz, D. B. (1986). “Modeling mechanical CAD data with data abstraction and object-oriented techniques.””  ...  “ODEPSI: An experimental object-oriented data base management system.” Transp. Res. Record 1282, 81-88. Kim, W., and Banerjee, J. (1985). “Support of abstract data types ina CAD database system.”  ... 

The Component-oriented Approach towards Complex Product Development [chapter]

Fujun Wang, John J. Mills
2001 Global Engineering, Manufacturing and Enterprise Networks  
The approach is based on the software component mechanism. A software component is a reusable software package which can run across heterogeneous platforms.  ...  The product component data and operation methods are exposed and can be reused by others.  ...  COMPONENT-BASED OPEN SYSTEM ARCHITECTURE Component-oriented Approach As an approach to software development, Object-Oriented (00) Analysis and Programming has been in a dominant position for one to two  ... 
doi:10.1007/978-0-387-35412-5_10 fatcat:mpcpi4ingrd4zpkh5hfazqqzvm

Object Oriented information storage for the design of injection moulds [chapter]

Robin Willems, Dirk Lecluse, J. P. Kruth
1996 IFIP Advances in Information and Communication Technology  
This paper describes the various levels of information within an intelligent support system for the design of injection moulds. The design system integrates CAD/CAM, database and expert system tools.  ...  The generated information on geometry, technology and functionality is stored in a feature based, object oriented model, the so called mould model.  ...  Object orientation is based on the object-concept. An object can be defined as any collection of abstract data.  ... 
doi:10.1007/978-0-387-34930-5_13 fatcat:nlbfig7ocjhlph5ve3yhjgsgv4

Engineering Change Propagation System using STEP

Chun-Fong You, Shen-Chou Yeh
2002 Concurrent Engineering - Research and Applications  
This work proposes an approach to engineering change propagation between CAD and product data management (PDM) systems.  ...  A change in CAD and PDM systems can propagate along a defined path and trigger a rule by which data of another system are changed.  ...  Acknowledgment The authors would like to thank the National Science Council of the Republic of China for financially supporting this research under Contract No. NSC 90-2212-E-002-221.  ... 
doi:10.1177/a030348 fatcat:djrs6vfeendbpe7lroxfuvksaa

"Top-down" design methodology utilizing abstraction of mechanical interfaces

Peter Goranov, Desislava Georgieva, Elena Todorova, D. Karaivanov
2019 MATEC Web of Conferences  
The present work proposes a "top-down" methodology that includes CAD in the early stages of the design process. The discussed methodology takes advantage of the object-oriented approach.  ...  CAD systems are a key design tool. As technology evolves, they provide greater functionality and solve tasks that are more complex.  ...  The authors would like to thank the Research and Development Sector at the Technical University of Sofia for the financial support.  ... 
doi:10.1051/matecconf/201928701029 fatcat:jkj6jdcjszec5jjdvnzpsl2eza

WELD---an environment for Web-based electronic design

Francis L. Chan, Mark D. Spiller, A. Richard Newton
1998 Proceedings of the 35th annual conference on Design automation conference - DAC '98  
Increasing size and geographical separation of design data and teams has created a need for a network-based electronic design environment that is scaleable, adaptable, secure, highly available, and cost  ...  The architecture of WELD and the components developed to implement the system, together with performance results, are described and evaluated.  ...  OCT serves as the data manager for a large number of VLSI/CAD applications following the Berkeley CAD framework [30] .  ... 
doi:10.1145/277044.277077 dblp:conf/dac/ChanSN98 fatcat:6hloxqqj3nbpde2xsxpmncb44y

Collaborative feature-based design via operations with a fine-grain product database

Y.-S. Ma, S.-H. Tang, C.K. Au, J.-Y. Chen
2009 Computers in industry (Print)  
The database management system (DBMS) can ensure the security and transparency for the users of CAD data.  ...  An ''associative feature'' definition was developed in [10, 11] for establishing the built-in object-oriented mechanisms among related geometric entities.  ... 
doi:10.1016/j.compind.2009.02.013 fatcat:kvine76kynd6bhz3eimbxifmlq

Product Development Integration Techniques and System Based on CAx and Knowledge Management

Yongdang Chen, Zhiqiang Bao, Huijuan Ren, Huali Ma, Guangmei Liu
2013 International Journal of Online Engineering (iJOE)  
It is a system base on product data management system and knowledge management system.  ...  A data structure of integration product model base on relation database was introduced. Knowledge-based integration system for product development was drawn out.  ...  Based on the relational database with object-oriented layer, the object-oriented data structure is established, and then the object is mapped to tables in a relational database.  ... 
doi:10.3991/ijoe.v9is4.2584 fatcat:54mf7hp2gvfv5aqdjiq7trr2ri

Bringing Programming by Demonstration to CAD Users [chapter]

Patrick Girard
2001 Your Wish is My Command  
From a CAD systems point of view, this approach proves that parametric CAD systems, which are already very successful for sequential (or simple repetitive, pattern-based) parametric design, may be extended  ...  This chapter presents a suite of systems we developed that constitute a solution for bringing programming to end users in the field of computeraided design (CAD), by using programming by demonstration  ...  Besides an object-oriented data model for the exchange of parts library data, the PLUS project had to develop an approach for the exchange of part family geometric models.  ... 
doi:10.1016/b978-155860688-3/50008-7 fatcat:hw5qkp2hcfbxzg3ivz3fsapha4
« Previous Showing results 1 — 15 out of 21,800 results