The Collaboration Abstraction Layer for Distributed CAD Development

2003 ◽  
Author(s):  
H. Zhou ◽  
Y. Q. Lu ◽  
W. D. Li ◽  
S. Lin ◽  
J. Y. H. Fuh ◽  
...  
Keyword(s):  
Collaborative Design ◽  
Rapid Development ◽  
Detection Algorithm ◽  
Collaborative Management ◽  
Management Service ◽  
Software Module ◽  
Constraint Checking ◽  
Abstraction Layer ◽  
3D Streaming ◽  
Streaming Service

In order to speed up the development of distributed CAD (DCAD) software applications and offer the end-users a friendly environment for collaborative design, Collaboration Abstraction Layer (CAL) is proposed. CAL aims to develop a pluggable software module that can be embedded into standalone CAD applications. Through summarizing and abstracting out the common characteristics of distributed CAD software, a set of foundation/helper classes for the important collaborative functionalities are enclosed in CAL, which include a 3D streaming service, a collaborative design management service, a constraint checking/solving service and a file versioning/baseline service. The 3D streaming service incorporates a geometrical simplification algorithm that supports selective refinement on level of details (LOD) model and a compact data structure represented in an XML format. The collaborative management service effectively schedules and manages a co-design job. The constraint checking/solving service, which composes of a design task dispatch interface, a collision detection algorithm, and an assembly constraint algorithm, coordinates designing and assembling based on constraints. The CAD file versioning/baseline service is to manage the history record of the CAD files and the milestones in the collaborative development process. By simulating the real collaborative design process, CAL designs a new collaboration mechanism which is different from most collaboration products in market. For the future potential development, CAL is built on an open-sourced software toolkit. It is coded to interfaces and kernel libraries so as to provide an immutable API for commonly used collaborative CAD functions. CAL enables rapid development of DCAD software, and minimizes application complexity by packaging the needed technology. Moreover, CAL is intending to be a partner to the current CAD software, not competitor, making it an ideal tool for future distributed CAD system development.

A Conflict Detection Approach for Collaborative Management of Product Interfaces

2010 ◽  
Author(s):  
Onur Hisarciklilar ◽  
Keyvan Rahmani ◽  
Vince Thomson
Keyword(s):  
Conflict Management ◽  
Collaborative Design ◽  
Collaborative Management ◽  
Management Approach ◽  
Functional Architecture ◽  
Complex Products ◽  
Detection Approach ◽  
Computer Aided ◽  
Management Method ◽  
Product Specification

In complex products, maintaining subsystem consistency throughout the design process is often a time-consuming process of document exchange among cooperating functions. This paper describes a conflict management approach that lead to the computer-aided management of the product specification conflicts that happen due to the integration of subsystems. In order to define a framework, a systematic interface representation which proposes building generic interface schemes for subsystem connectivity representation is described. Based on this methodology, a functional architecture of the proposed conflict management method, along with generic exception taxonomy of conflicts is developed. The applicability of the proposed concepts is discussed through illustrative examples. The proposed methodology is intended to allow automatic detection and handling of interface connectivity errors throughout collaborative design processes.

OFFSHORE OIL SPILL EQUIPMENT EVOLUTION IN SOUTHERN CALIFORNIA—A SYSTEMS APPROACH?1

1983 ◽  
Vol 1983 (1) ◽  
pp. 205-209
Author(s):  
Lindon A. Onstad
Keyword(s):  
Oil Spill ◽  
Local Governments ◽  
Southern California ◽  
Rapid Development ◽  
Coast Guard ◽  
Federal State ◽  
Management Service ◽  
Outer Continental Shelf ◽  
Offshore Oil ◽  
Response Capability

ABSTRACT Exploration of outer continental shelf (OCS) lands off Southern California has been expanding at a rapid rate for the past two years. Lease Sales 48, 53, and 68 have provided the impetus for this rapid development. The Bureau of Land Management has predicted several spills in excess of 1,000 barrels will occur as a result of these sales and subsequent exploration activities. Legitimate concerns have been raised by federal, state and local governments as well as numerous citizen groups concerning the ability of industry to respond adequately to a major offshore oil spill. As a result of these concerns, the California Coastal Commission has ordered a study and evaluation of the California Oil Spill Cooperatives with an objective of ensuring they will possess an adequate response capability. Concurrent with this study, the U.S. Coast Guard and the Interior Department's Minerals Management Service have entered into a Memorandum of Understanding concerning review of oil spill plans and equipment in OCS waters. With expanding geographic areas to cover, the cooperatives have begun to purchase new state-of-the-art equipment in hopes of satisfying the regulatory agencies and concerned groups. This paper examines the process of the federal government, state of California and industry in upgrading oil spill response capability in waters offshore southern California. The process is shown to have occurred systematically with a view toward the response system rather than individual pieces of equipment. Recommendations to California concerning acceptance of federal guidelines, joint reviews and use of dispersants are discussed.

RESEARCH ON COLLABORATIVE DESIGN SOFTWARE INTEGRATION BASED ON SOA

2008 ◽  
Vol 07 (01) ◽  
pp. 91-94 ◽  
Author(s):  
YAOGUANG HU ◽  
RAO WANG
Keyword(s):  
Enterprise Resource Planning ◽  
Collaborative Design ◽  
Computer Aided Design ◽  
Rapid Development ◽  
Resource Planning ◽  
Heterogeneous Environment ◽  
Software Integration ◽  
Cooperative Research ◽  
Computer Aided ◽  
Design Software

With the rapid development of economic globalization, more and more complex products have to be designed by the cooperation of the designers in different geographic locations. The effective sharing and deployment of collaborative design software are of great significance to enhance the capability of cooperative research and development of products. To solve the problem of software integration for collaborative design in the distributed and heterogeneous environment, a distributed software integration framework for collaborative product design based on Service Oriented Architecture (SOA) was proposed. Based on Web Service technology, a collaborative design platform was built, which encapsulates the functions of Computer Aided Design (CAD), Computer Aided Engineering (CAE), Product Data Management (PDM) and Enterprise Resource Planning (ERP) software to integrate distributed collaborative design software in heterogeneous environment.

Geometric Simplification to Stream 3D Models for Collaborative Product Design

2005 ◽  
Author(s):  
W. D. Li ◽  
W. F. Lu ◽  
Y. L. Cai
Keyword(s):  
Collaborative Design ◽  
3D Models ◽  
The Internet ◽  
Collaborative Product Design ◽  
Promising Solution ◽  
Web 3D ◽  
Design Systems ◽  
3D Streaming ◽  
Edge Collapse ◽  
Collapse Process

One of the challenging problems that hinder the development of collaborative design systems is the contradiction of large CAD files and the limited speed to share them over the Internet and Web. 3D streaming technique, which can allow effective and efficient dispatch and access of large-volume CAD data as a series of patched streams across the Internet, provides a promising solution to overcome the obstacle. Geometric simplification (or decimation) of 3D models is the key algorithm to realize the streaming technique. In this paper, a new geometric simplification algorithm has been developed, in which two criteria are the crucial elements to control the collapse process for edges in 3D VRML models to reduce the amount of information. The major feature of the algorithm is that it has incorporated some advantages of the previously developed vertex decimation approach and edge collapse approach. Meanwhile, the mechanism of adaptive threshold parameters adopted in this work enhances the adaptability of the algorithm for various applications. Through case studies and comparisons with some related works, the algorithm shows good performance and potentials in terms of efficiency, adaptability and robustness.

Trust-based federated learning for network anomaly detection

2021 ◽  
pp. 1-11
Author(s):  
Naiyue Chen ◽  
Yi Jin ◽  
Yinglong Li ◽  
Luxin Cai
Keyword(s):  
Machine Learning ◽  
Anomaly Detection ◽  
Private Information ◽  
Information Disclosure ◽  
Rapid Development ◽  
Detection Algorithm ◽  
Abnormal Behavior ◽  
Local Data ◽  
Daily Work ◽  
Network Anomaly Detection

With the rapid development of social networks and the massive popularity of intelligent mobile terminals, network anomaly detection is becoming increasingly important. In daily work and life, edge nodes store a large number of network local connection data and audit data, which can be used to analyze network abnormal behavior. With the increasingly close network communication, the amount of network connection and other related data collected by each network terminal is increasing. Machine learning has become a classification method to analyze the features of big data in the network. Face to the problems of excessive data and long response time for network anomaly detection, we propose a trust-based Federated learning anomaly detection algorithm. We use the edge nodes to train the local data model, and upload the machine learning parameters to the central node. Meanwhile, according to the performance of edge nodes training, we set different weights to match the processing capacity of each terminal which will obtain faster convergence speed and better attack classification accuracy. The user’s private information will only be processed locally and will not be uploaded to the central server, which can reduce the risk of information disclosure. Finally, we compare the basic federated learning model and TFCNN algorithm on KDD Cup 99 dataset and MNIST dataset. The experimental results show that the TFCNN algorithm can improve accuracy and communication efficiency.

3D streaming based on multi-LOD models for networked collaborative design

2008 ◽  
Vol 59 (9) ◽  
pp. 863-872 ◽  
Author(s):  
Chih-Hsing Chu ◽  
Yu-Hsuan Chan ◽  
Ping Han Wu
Keyword(s):  
Collaborative Design ◽  
3D Streaming ◽  
Lod Models

Decomposition-Based Modularity Method for Product Collaborative Design

2010 ◽  
Vol 97-101 ◽  
pp. 3593-3598 ◽  
Author(s):  
Jin Fei Liu ◽  
Ming Chen ◽  
Yuan Yao ◽  
Qing Hua Kong
Keyword(s):  
Collaborative Design ◽  
Rapid Development ◽  
Mathematic Model ◽  
Economic Globalization ◽  
Heterogeneous Environment ◽  
Multi Objective Optimization ◽  
Automobile Body ◽  
Cohesion Degree ◽  
And Performance ◽  
Heuristic Analysis

With the development of economic globalization, the union enterprises under the circumstance of inter-industry, inter-regional, inter-national have been making rapid development, which requires that the products R & D need implementing in the distributed heterogeneous environment. Modularity is the foundation of product collaborative design (PCD), and the decomposed modules are vital to improve the efficiency and performance of PCD. To meet the modularity requirements of PCD in the distributed heterogeneous environment, a new method of decomposition-based modularity for PCD is presented based on the combination of the heuristic analysis and the quantitative optimization. Firstly, on the basis of the incidence matrix of sub-task, the mathematic model based on multi-objective optimization is established in order to maximize the module cohesion degree and minimize the module coupling degree, while considering the module executable degree as the restrictions. Secondly, the mathematic model is optimized and simulated by the modified PSO, and the optimized modules are obtained. Finally, the rationality and effectiveness of this methodology is proved in an instance of collaborative design related to automobile body.

scholarly journals Application Status of BIM Collaborative Design in Architecture Major

2018 ◽  
Vol 1 (3) ◽  
pp. 87
Author(s):  
Chao Lei
Keyword(s):  
Collaborative Design ◽  
Building Information Modeling ◽  
Rapid Development ◽  
Reference Standards ◽  
Information Modeling ◽  
Building Information ◽  
Ifc Standard ◽  
2D Drawing

After the concept of BIM (Building Information Modeling) was proposed around 2000, it developed slowly. With the rapid development of hardware, the IFC standard provides reference standards for BIM collaborative design, enabling BIM collaborative design to effectively solve the shortcomings of traditional 2D drawing design and become a new market trend.

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