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Displaying 39126 - 39150 of 73830

Role of Empirical Studies Understanding and Supporting Engineering Design

April 1, 2004
Author(s)
Eswaran Subrahmanian, Ram D. Sriram, Paulien Herder, Henri Christiaans, Ralph Schneider
Study of design and norms for designing dates back 2000 years when Vitruvious first wrote his book on architectural design and prescribed what a designer ought to know and how he/she ought to behave. The perceived need to organize and systematize design

Rotational Spectra of the Diastereomers of Soman

April 1, 2004
Author(s)
R D. Suenram, R S. DaBell, Angela R. Hight Walker, D J. Lavrich, David F. Plusquellic, M W. Ellzy, J M. Lochner, L Cash, J O. Jensen, A C. Samuels
The pure rotational spectrum of the nerve agent Soman has been recorded and assigned using a pulsed molecular beam Fourier transform microwave spectrometer. The spectrum consists of transitions from two different isomers that are likely the [SS] (or [RR])

SCC Evolution of Formwork Hydraulic Pressure and Rheological Properties

April 1, 2004
Author(s)
S Amziane, Chiara C. Ferraris
An experimental investigation was performed to determine the hydraulic pressure variation of cementitious based materials (cement paste, concrete, SCC, etc.) during the plastic phase. A method based on measurements of both total lateral pressure and

Solid-Liquid Equilibrium for Non-Hydrostatic Stress

April 1, 2004
Author(s)
R F. Sekerka, John W. Cahn
We examine Gibbs' conditions for equilibrium of a non-hydrostatically stressed single component solid in equilibrium across one of its faces with a pure liquid at pressure p(superscriptF). We show that the equilibrium melting temperature T(subscriptN) for

Source Strengths of Ultrafine and Fine Particles Due to Cooking With a Gas Stove

April 1, 2004
Author(s)
L A. Wallace, Steven Emmerich, Cynthia H. Reed
Cooking, particularly frying, is an important source of particles indoors. Few studies have measured a full range of particle sizes produced during cooking. In this study, particles in 124 size bins from 0.01 mm to 2.5 mm were measured continuously over

Stability of Voids Formed in Cavities at Liquid-Solid Interfaces

April 1, 2004
Author(s)
Jeffrey W. Bullard
A thermodynamic model is developed of the free energy of gas-filled voids formed within cavities on solid surfaces covered by a liquid. Capillary effects are assumed to be the only important contributions to the free energy, and expressions are derived for

Suppression of Cup-Burner Flames Using Carbon Dioxide in Microgravity

April 1, 2004
Author(s)
V Katta, F Takahashi, Gregory T. Linteris
Carbon dioxide extinguishes flames through dilution process. The extinction characteristics of CO2 were previously studied using a cup-burner flame under normal-gravity conditions. As the diffusion flames behave differently in microgravity compared to

The Rich Transcription 2004 Spring Meeting Recognition Evaluation

April 1, 2004
Author(s)
John S. Garofolo, Christophe Laprun, Jonathan G. Fiscus
This paper presents the design and results of the Rich Transcription 2004 Spring Meeting Recognition Evaluation. The evaluation included both Speaker Segmentation (SPKR) and Speech-to-Text Transcription (STT) tasks. Three microphone conditions were

UML 2 Activity and Action Models, Part 5: Partitions

April 1, 2004
Author(s)
Conrad E. Bock
This is the fifth in a series introducing the activity model in the Unified Modeling Language, version 2 (UML 2), and how it integrates with the action model. The first article gives an overview of activities and actions, while the next three cover actions

Unusual Expansion and Contraction in Ultrathin Glassy Polycarbonate Films

April 1, 2004
Author(s)
Christopher L. Soles, Jack F. Douglas, Ronald L. Jones, Wen-Li Wu
The thermal expansion behavior and glass transitions of poly(styrene) (PS) and poly(methyl methacrylate) (PMMA) are extensively studied in the thin film geometry. Both PS and PMMA are similar in that they possess very low entanglement densities. In this

A Welding Data Dictionary

March 31, 2004
Author(s)
William G. Rippey
This data dictionary specifies data elements that are used to describe the design, fabrication and inspection of weldments. It comprises welding information from several authoritative sources. Data include description of component materials, details of

The New DOE Dishwasher Test Procedure: Development and First Results

March 29, 2004
Author(s)
Natascha S. Milesi-Ferretti, J Bowman, B Twigg
This paper summarizes the main changes to the test procedure for residential dishwashers and, Department of Energy s (DOE, Department) and industry s collaborative efforts to develop the data supporting those changes. It also quantifies energy consumption

Duplication of DYS19 Flanking Regions in Other Parts of the Y Chromosome

March 25, 2004
Author(s)
John M. Butler, R Schoske
During the testing of alternative primers for the Y chromosome short tandem repeat marker DYS19, a duplicated region of the Y chromosome was discovered. The duplicated sequence is contained within GenBank accession AC006335 and has a high degree of

Knowledge Representation for On-Road Driving

March 24, 2004
Author(s)
Christopher J. Scrapper Jr, Stephen B. Balakirsky
This paper will present a knowledge layer used by a hierarchical on-road driving planner that represents a road network as a discrete set of attributed road states. This knowledge layer facilitates the construction of a planning graph by providing
Displaying 39126 - 39150 of 73830
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