检索结果-内蒙古大学图书馆

International Conference on Shape Modeling and Applications

作者： V. Cicirello W.C. Regli The Robotics Institute Carnegie Mellon University Pittsburgh PA USA Geometric and Intelligent Computing Laboratory Department of Mathematics and Computer Science Drexel University Philadelphia PA USA

ISBN: (纸本)0769508537

Solid models are the critical data elements in modern computer-aided design (CAD) environments, describing the shape and form of manufactured artifacts. Their growing ubiquity has created new problems in how to effectively manage the many models that are now stored in the digital libraries of large design and manufacturing enterprises. Existing techniques from the engineering literature and from industrial practice, such as group technology, rely on human-supervised encoding and classification, while techniques from the multimedia database and computer graphics/vision communities often ignore the manufacturing attributes most significant in the classification of models. This paper presents our approach to the manufacturing similarly assessment of solid models of mechanical parts based on machining features. Our technical approach is three-fold: (1) perform machining feature extraction to map the solid model to a set of STEP AP 224 machining features; (2) construct a model dependency graph from the set of machining features; and (3) find the nearest neighbors to the query graph using an iterative improvement search across a database of other models. We also present empirical experiments to validate our approach using our testbed, the National Design Repository ( ). The contribution of this research is the first fully automated technique for machining feature-based comparisons of mechanical artifacts. We believe that this work can lead to radical changes in the way in which design data is managed in modern engineering enterprises.

关键词： Machining Solid modeling Virtual manufacturing Design automation computer aided manufacturing Data engineering Shape Software libraries computer industry Manufacturing industries

来源：评论

学校读者我要写书评

暂无评论

APPLYING CASE-BASED REASONING TO MECHANICAL BEARING DESIGN

APPLYING CASE-BASED REASONING TO MECHANICAL BEARING DESIGN

引用

ASME 2000 International Design Engineering Technical Conferences and computers and Information in Engineering Conference, IDETC-CIE 2000

作者： Qin, Xiaoli Regli, William C. Geometric and Intelligent Computing Laboratory Department of Mathematics and Computer Science Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States

ISBN: (纸本)9780791835135

Case-Based Reasoning (CBR) provides a promising methodology for solving many complex engineering design problems. CBR is based on the idea that past problem-solving experiences can be reused and learned from in solving new problems. This paper presents an overview of a CBR design system to assist human engineers in performing mechanical bearing design. It retrieves previously designed cases from a case-base and uses adaptation techniques to adapt them to satisfy the current problem requirements. Our approach combines parametric adaptations and constraint satisfaction adaptations. The technique of parametric adaptation considers not only parameter substitution, but also the interrelationships between the problem definition and its solution. The technique of constraint satisfaction adaptation provides a method to globally check the design requirements to assess case adaptability. Currently, our system has been tested in the rolling bearing domain. Copyright © 2000 by ASME.

关键词： Case based reasoning

来源：评论

学校读者我要写书评

暂无评论

Developing and evaluating collaborative engineering studios

Developing and evaluating collaborative engineering studios

引用

IEEE International Workshop on Enabling Technologies: Infrastructure for Collaborative Enterprises (WET ICE)

作者： J. Sevy V. Zaychik T.T. Hewett W.C. Regli Geometric and Intelligent Computing Laboratory Department of Mathematics and Computer Science Drexel University Philadelphia PA USA

We discuss a vision of a work in progress on a collaborative engineering environment, the Collaborative Design Studio, being developed at the geometric and intelligent computing laboratory at Drexel University. This works seeks to integrate computer-Aided Design (CAD) and communication tools through automatic extraction and embedding of design contest into communications, as well as provide archiving and retrieval of informal communications. While preliminary development of the studio has proceeded using relatively informal input from professional design engineers, direct evaluation by intended users of the system will be sought to guide further developments of the system to ensure that it accurately meets their needs and fits into their work environment. Such formative user input will be obtained through surveys and observations of subjects as they complete specified tasks. Future summative evaluation will attempt to measure changes in user productivity and efficiency. Discussion focuses on issues and questions relating to the effective design and evaluation of such systems, and describe proposed studies for evolving the current environment.

关键词： Collaboration Collaborative work Design engineering Design automation Context computer vision Collaborative tools mathematics computer science Productivity

来源：评论

学校读者我要写书评

暂无评论

A SURVEY ON DESIGN RATIONALE: REPRESENTATION, CAPTURE AND RETRIEVAL

A SURVEY ON DESIGN RATIONALE: REPRESENTATION, CAPTURE AND RE...

引用

ASME 2000 International Design Engineering Technical Conferences and computers and Information in Engineering Conference, IDETC-CIE 2000

作者： Hu, Xiaochun Pang, Jun Pang, Yan Atwood, Michael Sun, Wei Regli, William C. Geometric and Intelligent Computing Laboratory Department of Mathematics and Computer Science Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States Rapid Product Development Center Department of Mechanical Engineering and Mechanics Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States College of Information Science and Technology Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States

ISBN: (纸本)9780791835135

This paper provides a brief survey on recent research in the area of design rationale. The study of Design Rationale spans a number of diverse disciplines, touching on concepts from research communities in Mechanical Design, Software Engineering, Artificial Intelligence, Civil Engineering and Human-Factors and Human-computer Interaction research. We focus this survey on prototype design rationale systems for these application domains and put forward several major axes along which to describe and classify design rationale systems, including argumentation-based, descriptive, and process-based approaches. Further, we attempt to abstract the place of systems and tools for design rationale capture and retrieval in the context of contemporary knowledge-based engineering and CAD tools. This survey is structured around the fundamental different approaches, their representation schema, their capture methods, and retrieval techniques. A number of recent design rationale systems and representation schemes are presented, including JANUS, COMET, ADD, REMAP, HOS, PHIDIAS, DRIVE, IBIS. We conclude with an assessment of the current state-ofthe-art and a discussion of critical open research issues. Copyright © 2000 by ASME.

关键词： computer aided design

来源：评论

学校读者我要写书评

暂无评论

Digital library support for engineering design and manufacturing

Digital library support for engineering design and manufactu...

引用

ASME 1999 Design Engineering Technical Conferences, DETC 1999

作者： Regli, William C. Geometric and Intelligent Computing Laboratory Department of Mathematics and Computer Science Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States

ISBN: (纸本)9780791819722

This paper describes our initial efforts to deploy a digital library to support engineering design and manufacturing. This experimental testbed, The Engineering Design Repository, is an effort to collect and archive public domain engineering data for use by reseai'chers and engineering professionals. CAD knowledge-bases are vital to engineers, who search through vast amounts of corporate legacy data and navigate online catalogs to retrieve precisely the right components for assembly into new products. This research attempts to begin addressing the critical need for improved computational methods for reasoning about complex geometric and engineering information. In particular, we focus on archival and reuse of design and manufacturing data for mechatronic systems. This paper presents a description of the research problem and an overview of the initial architecture of testbed. © 1999 American Society of Mechanical Engineers (ASME). All rights reserved.

关键词： Digital libraries

来源：评论

学校读者我要写书评

暂无评论

Genetic micro-rollback self-recovery synthesis

Genetic micro-rollback self-recovery synthesis

引用

1999 Congress on Evolutionary Computation, CEC 1999

作者： Sookhanaphibarn, K. Lursinsap, C. Advanced Virtual and Intelligent Computing Laboratory Department of Mathematics and Computer Science Chulalongkorn University Bangkok 10330 Thailand

ISBN: (纸本)0780355369

Self-recovery micro-rollback synthesis (SMS) has currently become an important issue in high level synthesis. The problem of SMS combines the problem of functional unit scheduling and assignment with the problem of checkpoint insertion and microprogram optimization. It has been shown that these problems are NP-complete. The most studied problem is functional unit scheduling and assignment. Several heuristic techniques, including as soon as possible (ASAP), as last as possible (ALAP), integer programming, spring elasticity model, graph based mobility model, and genetic algorithm, are proposed. However, there are few studies on self-recovery micro-rollback synthesis and the technique of solution space searching by genetic algorithm has not been attempted. We study the feasibility of the genetic algorithm for the problem of SMS constrained on: the number of functional units, control steps, number of checkpoints, and the functional unit areas. © 1999 IEEE.

关键词： Scheduling

来源：评论

学校读者我要写书评

暂无评论

Conceptual design for assembly

Conceptual design for assembly

引用

ASME 1999 Design Engineering Technical Conferences, DETC 1999

作者： Lombeyda, Santiago V. Regli, William C. Geometric and Intelligent Computing Laboratory Department of Mathematics and Computer Science Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States Center for Advanced Computing Research California Institute of Technology Mailstop 158-79 1200 E. California Blvd PasadenaCA91125 United States

ISBN: (纸本)9780791819746

This paper presents an approach to support computer-aided conceptual design of mechatronic assemblies in a collaborative, multi-user environment. We describe a system. Conceptual Understanding and Prototyping (CUP), that allows a team of design engineers, collaborating over the Internet, to develop a high-level structure-function-behavior (S-B-F) description of an assembly in a VRML-based virtual environment. Our goal is to enable users to navigate intricate product data management (PDM) and case-based design knowledge-bases, providing the ability to perform design at conceptual level and have intelligent CAD tools that can . draw on details from large repositories of previously archived designs. This work furthers research efforts in computer support for collaborative design activities-drawing on work in Human-computer Interaction (HCI) and computer Supported . Collaborative Work (CSCW). We envision CUP to be a network interface to next-generation of engineering PDM systems and CAD databases. CUP as query interface to the National Design Repository (http://***). This will enable CAD users to interrogate large quantities of legacy data and identify artifacts with structural and functional similarities-allowing designers to perform case-based and variant design. © 1999 American Society of Mechanical Engineers (ASME). All rights reserved.

关键词： computer aided design

来源：评论

学校读者我要写书评

暂无评论

Genetic micro-rollback self-recovery synthesis

Genetic micro-rollback self-recovery synthesis

引用

Congress on Evolutionary Computation

作者： K. Sookhanaphibarn C. Lursinsap Dept. of Math. & Comput. Sci. Chulalongkorn Univ. Bangkok Thailand Advanced Virtual and Intelligent Computing Laboratory Department of Mathematics and Computer Science Chulalongkom University Bangkok Thailand

关键词： High level synthesis Circuit faults Genetic algorithms Space technology Very large scale integration Algorithm design and analysis Laboratories mathematics computer science Processor scheduling

来源：评论

学校读者我要写书评

暂无评论

Transactions on Rough Sets XII 1

引用

丛书名： Lecture Notes in computer science

1000年

作者： James F. Peters Andrzej Skowron Roman Słowiński Pawan Lingras Duoqian Miao Shusaku Tsumoto

来源：评论

学校读者我要写书评

暂无评论

Vehicle Dynamics and Interaction for Trajectory Prediction and Traffic Control

引用

ACM Transactions on Autonomous and Adaptive Systems 1000年

作者： Jian Chen Shaorui Zhou Wei Wang Yuzhu Hu Jianqing Li Ben-Guo He Junxin Chen Marwan Omar Ali Kashif Bashir Xiping Hu School of Intelligent Systems Engineering Sun Yat-Sen University China Guangdong-Hong Kong-Macao Joint Laboratory for Emotion Intelligence and Pervasive Computing Artificial Intelligence Research Institute Shenzhen MSU-BIT University China School of Computer Science and Engineering Faculty of Innovation Engineering Macau University of Science and Technology Macao SAR China Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern University China the School of Software Dalian University of Technology China Information Technology and Management Illinois Institute of Technology USA Department of Computing and Mathematics Manchester Metropolitan University UK Centre for Research Impact & Outcome Chitkara University Institute of Engineering and Technology Chitkara University Rajpura 140401 Punjab India

Trajectory prediction is a crucial challenge in autonomous vehicle motion planning and decision-making techniques. However, existing methods face limitations in accurately capturing vehicle dynamics and interactions. To address this issue, this paper proposes a novel approach to extracting vehicle velocity and acceleration, enabling the learning of vehicle dynamics and encoding them as auxiliary information. The VDI-LSTM model is designed, incorporating graph convolution and attention mechanisms to capture vehicle interactions using trajectory data and dynamic information. Specifically, a dynamics encoder is designed to capture the dynamic information, a dynamic graph is employed to represent vehicle interactions, and an attention mechanism is introduced to enhance the performance of LSTM and graph convolution. To demonstrate the effectiveness of our model, extensive experiments are conducted, including comparisons with several baselines and ablation studies on real-world highway datasets. Experimental results show that VDI-LSTM outperforms other baselines compared, which obtains a 3% improvement on the average RMSE indicator over the five prediction steps.

关键词： Trajectory Prediction Vehicle Dynamics Interaction Perception Graph Convolution Attention Mechanism

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：