The Experts below are selected from a list of 1785 Experts worldwide ranked by ideXlab platform

Rangaraja P. Sundarraj - One of the best experts on this subject based on the ideXlab platform.

  • Hub location at digital equipment corporation: A comprehensive analysis of qualitative and quantitative factors
    European Journal of Operational Research, 2002
    Co-Authors: Joseph Sarkis, Rangaraja P. Sundarraj
    Abstract:

    Abstract The economic growth of countries in the Asia–Pacific (AP) region has caused many US-based businesses to consider the strategic initiative of setting up facilities therein. In this paper, we describe a study to locate a repair-parts warehouse for digital equipment corporation, a world leader in the computer and electronics market. digital's management was charged to consider not only the long-term strategic (or qualitative) issues typical of such problems, but they also had to ensure that any facility that is located would also be viable from a freight-cost (or quantitative) perspective. We show how the analytical network process (ANP) model combined with an optimization model can be used to conduct a comprehensive evaluation of these varied issues.

Michael Stonebraker - One of the best experts on this subject based on the ideXlab platform.

  • sequoia 2000 a reflection on the first three years
    Statistical and Scientific Database Management, 1994
    Co-Authors: Michael Stonebraker
    Abstract:

    The purpose of the SEQUOIA 2000 project is to build a better computing environment for global change researchers. Such researchers investigate issues such as global warming, ozone depletion, environment toxification, and species extinction, and are members of Earth Sciences Departments at Universities and National Laboratories. SEQUOIA 2000 is the digital equipment corporation flagship research project for the 1990's. We describe the SEQUOIA 2000 project and its implementation efforts during the first three years. Included are the objectives we had, how we chose to address them and some of the lessons we learned from this endeavour. >

  • sequoia 2000 a next generation information system for the study of global change
    IEEE Symposium on Mass Storage Systems, 1994
    Co-Authors: Jeff Dozier, Michael Stonebraker, James Frew
    Abstract:

    Better data management is crucial to the success of scientific investigations of global change. New modes of research about the Earth, especially the synergistic interactions between observations and models, require massive amounts of diverse data to be stored, organized, accessed, distributed, visualized, and analyzed. To address technical issues of better data management, participants in Sequoia 2000, a collaborative effort between computer scientists and Earth scientists at several campuses of the University of California and at digital equipment corporation (DEC), apply refinements in computing to specific applications. The software architecture includes layers for a common device interface, the file system, the database management system (DBMS), applications, and the network. Early prototype applications of this software include a global-change data schema, integration of a general circulation model (GCM), remote sensing, and a data system for climate studies. Longer range efforts include transfer protocols for moving elements of the database, controllers for secondary and tertiary storage, distributed file system, and a distributed DBMS. >

  • highlight using a log structured file system for tertiary storage management
    USENIX Winter, 1993
    Co-Authors: John T. Kohl, Carl Staelin, Michael Stonebraker
    Abstract:

    Robotic storage devices offer huge storage capacity at a low cost per byte, but with large access times. Integrating these devices into the storage hierarchy presents a challenge to file system designers. Log-structured file systems (LFSs) were developed to reduce latencies involved in accessing disk devices, but their sequential write patterns match well with tertiary storage characteristics. Unfortunately, existing versions only manage memory caches and disks, and do not support a broader storage hierarchy. HighLight extends 4.4BSD LFS to incorporate both secondary storage devices (disks) and tertiary storage devices (such as robotic tape jukeboxes), providing a hierarchy within the file system that does not require any application support. This paper presents the design of HighLight, proposes various policies for automatic migration of file data between the hierarchy levels, and presents initial migration mechanism performance figures. This research was sponsored in part by the University of California and digital equipment corporation under digital’s flagship research project “Sequoia 2000: Large Capacity Object Servers to Support Global Change Research.” Other industrial and governmentpartners include the California Department of Water Resources, United States Geological Survey, MCI, ESL, Hewlett Packard, RSI, SAIC, PictureTel, Metrum Information Storage, and Hughes Aircraft corporation. This work was also supported in part by digital equipment corporation’s Graduate Engineering Education Program. Permission has been granted by the USENIX Association to reprint the above article. This article was originally published in the USENIX Association Conference Proceedings, January 1993. Copyright c USENIX Association, 1993.

Joseph Sarkis - One of the best experts on this subject based on the ideXlab platform.

  • Hub location at digital equipment corporation: A comprehensive analysis of qualitative and quantitative factors
    European Journal of Operational Research, 2002
    Co-Authors: Joseph Sarkis, Rangaraja P. Sundarraj
    Abstract:

    Abstract The economic growth of countries in the Asia–Pacific (AP) region has caused many US-based businesses to consider the strategic initiative of setting up facilities therein. In this paper, we describe a study to locate a repair-parts warehouse for digital equipment corporation, a world leader in the computer and electronics market. digital's management was charged to consider not only the long-term strategic (or qualitative) issues typical of such problems, but they also had to ensure that any facility that is located would also be viable from a freight-cost (or quantitative) perspective. We show how the analytical network process (ANP) model combined with an optimization model can be used to conduct a comprehensive evaluation of these varied issues.

B C Brown- G G Harrison- T P Trafton- L L Arntzen - One of the best experts on this subject based on the ideXlab platform.

  • Global Supply Chain Management at digital-equipment-corporation
    Lysgaard Jens, 1995
    Co-Authors: B C Brown- G G Harrison- T P Trafton- L L Arntzen
    Abstract:

    digital equipment corporation evaluates global supply chain alternatives and determines worldwide manufacturing and distribution strategy, using the Global Supply Chain Model (GSCM) which recommends a production, distribution, and vendor network. GSCM minimizes cost or weighted cumulative production and distribution times or both subject to meeting estimated demand and restrictions on local content, offset trade, and joint capacity for multiple products, echelons, and time periods. Cost factors include fixed and variable production charges, inventory charges, distribution expenses via multiple modes, taxes, duties, and duty drawback. GSCM is a large mixed- integer linear program that incorporates a global, multi-product bill of materials for supply chains with arbitrary echelon structure and a comprehensive model of integrated global manufacturing and distribution decisions. The supply chain restructuring has saved over $100 million (US).

Fowler, Robert J. - One of the best experts on this subject based on the ideXlab platform.

  • MINT: A Front End for Efficient Simulation of Shared-Memory Multiprocessors
    IEEE, 2012
    Co-Authors: Veenstra, Jack E., Fowler, Robert J.
    Abstract:

    Link to published version: http://ieeexplore.ieee.org/iel2/938/7028/00284422.pdf?tp=&arnumber=284422&isnumber=7028MINT is a software package designed to ease the process of constructing event-driven memory hierarchy simulators for multiprocessors. It provides a set of simulated processors that run standard Unix executable files compiled for a MIPS R3000 based multiprocessor. These generate multiple streams of memory reference events that drive a user-provided memory system simulator. MINT uses a novel hybrid technique that exploits the best aspects of native execution and software interpretation to minimize the overhead of processor simulation. Combined with related techniques to improve performance, this approach makes simulation on uniprocessor hosts extremely efficient. MINT runs on MIPS-based machines including those from Silicon Graphics and digital equipment corporation. The source code for MINT is available by anonymous ftp from cs.rochester.edu and includes a tutorial and user manual