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Displaying 7701 - 7725 of 9858

Internet Commerce for Manufacturing Product Data

April 1, 1999
Author(s)
Curtis H. Parks
Printed circuit assemblies (PCA) typically are designed on computer aided design (CAD) systems, checked, then released for manufacture. The released design description typically consists of a top assembly drawing and a series of data files which are used

Gapped Arresters Revisited: A Solution to Cascade Coordination

October 1, 1998
Author(s)
A. Mansoor, Francois D. Martzloff, K. O. Phipps
This paper provides a brief perspective on how the coordination of cascaded surge-protective devices (SPDs) has become an issue. We propose an approach where the 'ancient' technology of gapped arresters may well be the answer to the dilemma of the

Accurate Ab Initio Calculation of Molecular Constants

March 1, 1998
Author(s)
Svetlana A. Kotochigova, I Tupitsyn
The valence bond method and advanced computational technique are used to perform all-electron ab initio calculations of the electronic structure of diatomic molecules. The basic idea behind the method is to expand the molecular wavefunction in terms of

Development of a Message Model to Support Integrated Design and Manufacturing

November 1, 1997
Author(s)
Venkat Allada, Shaw C. Feng, Steven R. Ray
Mere data sharing between engineering design systems and manufacturing systems does not represent an ideal integrated system. While data sharing represents an important aspect of an integrated design and manufacturing environment, an equally critical

Systems Integration for Manufacturing Applications Program 1995 Annual Report

April 1, 1996
Author(s)
James E. Fowler, Mark E. Luce
Computer representations for machine tools, cutting tools, and associated hardware are used within a variety of manufacturing software applications. Currently there is no agreed-upon mechanism for representing such manufacturing resource data and as a

Control of Flexible Robot Arm

December 31, 1987
Author(s)
Jonathan W. Lee, L Haynes, B Wang, T M. Tsai
This work is a computer simulation of the control of flexible robot arm. The dynamic equations for a single-link flexible robot arm have been derived rigorously. This arm has two degrees of freedom in rotation and one in translation so that the workspace

Software for an Automated Machining Workstation

September 1, 1986
Author(s)
Thomas R. Kramer, Jay S. Jun
The National Bureau of Standards' Automated Manufacturing Research Facility (AMRF) includes three machining workstations. In the vertical workstation (VWS) metal parts are machined automatically from a design. A simple part may be designed and machined

Hierarchical Control for Robots in an Automated Factory

May 1, 1983
Author(s)
James S. Albus, Tony Barbera, Howard Bloom, M L. Fitzgerald, Ernest Kent, Charles R. McLean
The basic structure of a hierarchical control system is a tree, wherein each computational module has a single superior, and one or more subordinate modules. The top module is where the highest level decisions are made and the longest planning horizon

Synthetic Electric and Magnetic Fields for Ultracold Neutral Atoms

January 1, 2011
Author(s)
William D. Phillips, Yu-Ju Lin, Robert L. Compton, Karina K. Jimenez Garcia, Abigail R. Perry, James V. Porto, Ian B. Spielman
… Bose-Einstein condensation, cold atomic gases, quantum simulation, synthetic electric field, synthetic …

Ultracold Atom Spin Field Effect Transistor

September 14, 2009
Author(s)
Jay Vaishnav, Julius Ruseckas, Charles W. Clark, Gediminas Juzelunas
… Dirac equation, ultracold atoms, optical lattices, quantum simulation, atomtronics, spintronics …

A Multi-Frequency 4-Terminal-Pair AC Bridge

May 1, 2000
Author(s)
Anne-Marie Jeffery, John Q. Shields, Scott H. Shields
… 2-terminal-pair, 4-terminal-pair, ac bridges, ac quantum Hall, calculable capacitor, capacitance measurements, …

Algorithm-Supervised Millimeter Wave Indoor Localization using Tiny Neural Networks

January 17, 2025
Author(s)
Anish Shastri, Steve Blandino, Camillo Gentile, Chiehping Lai, Paolo Casari
The quasi-optical propagation of mmw signals has been instrumental in designing high-accuracy localization algorithms. These algorithms either exploit the geometric properties of the mmw signals or are based on an environment's radio footprints, leading to

The Global and Local Structure of Medium-Scale Pool Fires

October 24, 2024
Author(s)
Kunhyuk Sung, Ryan Falkenstein-Smith, Matthew Bundy, Marco Fernandez, Anthony Hamins
A series of experiments are reported that characterize key features of the structure of eight medium-scale pool fires (0.3 m to 0. 4 m) burning a variety of liquid and gaseous fuel types, including 30 cm diameter liquid pool fires burning methanol, ethanol
Displaying 7701 - 7725 of 9858
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