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Search Publications by: Ram D. Sriram (Fed)

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Displaying 76 - 100 of 155

Ontology Formalization of Product Semantics for Product Lifecycle Management

November 1, 2005
Author(s)
Lalit Patil, Ram D. Sriram
Product Lifecycle Management (PLM) is a concept that takes into account that the development of a product is influenced by knowledge from various stakeholders throughout its lifecycle. Computing environments in the PLM framework are expected to have

CPM: A Core Model for Product Data

October 1, 2005
Author(s)
Steven J. Fenves, Sebti Foufou, Conrad Bock, Ram D. Sriram
The support of PLM throughout the product life, from the product?s conceptualization to its disposal, requires reliable, complete and efficient data models. The Core Product Model (CPM), initially developed at NIST for a number of in-house research

Knowledge-Intensive Collaborative Decision Support for Design Process

October 1, 2005
Author(s)
XuanFang Zha, Ram D. Sriram
In this chapter, we describe a hybrid decision model and a multi-agent framework for collaborative decision support in the design process. The proposed knowledge-based collaborative decision support model can quantitatively incorporate qualitative design

Healthcare Strategic Focus Area: Clinical Informatics

September 1, 2005
Author(s)
Conrad Bock, Lisa Carnahan, Steven J. Fenves, Michael Gruninger, V Kashyap, Bettijoyce B. Lide, Jim G. Nell, Ravi S. Raman, Ram D. Sriram
NIST has conducted several workshops and other information gathering activities, that have identified several key strategic opportunities in healthcare information technology (HIT) for NIST: clinical informatics; bioinformatics; medical devices

Knowledge Integration for Bio-Threat Response

September 1, 2005
Author(s)
K Verspoor, O Bodenreider, P Karp, H Kelly, S Loranger, M Musen, Ram D. Sriram, C Wroe, C Joslyn, J Ambrosiano
Bio-threats require rapid analysis and response to prevent widespread consequences to the population. The inability to easily link and exploit biological knowledge for both human and automated analysis is a major limitation on the speed of complex

Analysis and Evaluation for STEP-Based Electro-Mechanical Assemblies

August 1, 2005
Author(s)
XuanFang Zha, Sebti Foufou, Sudarsan Rachuri, Ram D. Sriram
In this paper, we propose an integrated approach to assemblability analysis and evaluation for STEP-based (STandard for the Exchange of Product model data, officially ISO 10303) electro-mechanical products. First, two assembly representational models are

Distributed Modeling and Framework for Collaborative Embedded System Design

July 1, 2005
Author(s)
XuanFang Zha, Ram D. Sriram
In this paper, we develop distributed design models and framework for collaborative embedded system design. Based on the component-based approach, a unified design-with-modules scheme is proposed to model the embedded system design process and a web-based

A Core Product Model for PLM with an Illustrative XML Implementation

March 1, 2005
Author(s)
Sebti Foufou, Steven J. Fenves, Conrad Bock, Sudarsan Rachuri, Ram D. Sriram
We propose a Core Product Model (CPM) for modeling product information suitable for supporting the information needs of Product Lifecycle Management (PLM) systems over the lifecycle of the product from the earliest ideation to manufacturing, operation and

Information Models for Product Representation: Core and Assembly Models

March 1, 2005
Author(s)
Sudarsan Rachuri, Mehmet M. Baysal, Utpal Roy, Sebti Foufou, Conrad Bock, Steven J. Fenves, Eswaran Subrahmanian, Kevin W. Lyons, Ram D. Sriram
This paper presents a revised and unified view of the NIST Core Product Model (CPM) [1; 2] and the NIST Open Assembly Model (OAM) [3]. The CPM provides a base-level product model that is not tied to any vendor software; open; non-proprietary; simple

Ontology-based Exchange of Product Data Semantics

March 1, 2005
Author(s)
Lalit Patil, D Dutta, Ram D. Sriram
An increasing trend toward product development in a collaborative environment has resulted in the use of various software tools to enhance the product design. This requires a meaningful representation and exchange of product data semantics across different

Toward Data Standards for Proteomics Data

March 1, 2005
Author(s)
Veerasamy Ravichandran, Ram D. Sriram
Biologists have traditionally worked with relatively small data sets and shared results only with others working on similar biological systems. With the advent of genomics, and now proteomics, they are faced with exponentially growing sets of highly inter

CAD/CAPP Integration using Feature Ontology

January 1, 2005
Author(s)
C Dartigues, P Ghodous, Michael Gruninger, D Pallez, Ram D. Sriram
In a collaborative computer-supported engineering environment, the interoperation of various applications will need a representation that goes beyond the current geometry-based representation, which is inadequate for capturing semantic information. The

CPM 2: A Revised Core Product Model for Representing Design Information

January 1, 2005
Author(s)
Steven J. Fenves, Sebti Foufou, Conrad Bock, Roger Bouillon, Ram D. Sriram
This report presents a revised version of the Core Product Model (CPM) initially reported in [1]. The objectives of the report are: (1) to document the changes in the CPM relative to the first version; (2) to describe in detail the revised CPM, represented

Information Models for Product Representation: Core and Assembly Models

December 1, 2004
Author(s)
Sudarsan Rachuri, Mehmet M. Baysal, Utpal Roy, Sebti Foufou, Steven J. Fenves, Eswaran Subrahmanian, Kevin W. Lyons, Ram D. Sriram, Conrad Bock
This report presents a revised and unified view of the NIST Core Product Model (CPM) [1; 2] and the NIST Open Assembly Model (OAM) [3]. The CPM provides a base-level product model that is not tied to any vendor software; open; non-proprietary; simple

Feature-Based Component Model for Design of Embedded Systems

November 1, 2004
Author(s)
XuanFang Zha, Ram D. Sriram
An embedded system is a hybrid of hardware and software, which combines software?s flexibility and hardware real-time performance. Embedded systems can be considered as assemblies of hardware and software components. An Open Embedded System Model (OESM) is