WorldCat Identities

U.S. Army Research Laboratory

Overview
Works: 1,822 works in 2,248 publications in 1 language and 180,192 library holdings
Genres: Periodicals 
Classifications: TL529, 629.13
Publication Timeline
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Most widely held works about U.S. Army Research Laboratory
 
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Most widely held works by U.S. Army Research Laboratory
A systems approach to the solid lubrication of foil air bearings for oil-free turbomachinery by Christopher DellaCorte( Book )

2 editions published in 2002 in English and held by 136 WorldCat member libraries worldwide

Application of autoassociative neural networks to health monitoring of the CAT 7 diesel engine by Andrew J Bayba( Book )

2 editions published in 2012 in English and held by 35 WorldCat member libraries worldwide

The original document contains color images
Modeling and design of mixed-coherence optical stacks by William Beck( Book )

2 editions published in 2012 in English and held by 34 WorldCat member libraries worldwide

Evaluation of a high resolution wind model over a complex terrain surface by Sam S Chang( Book )

2 editions published in 2009 in English and held by 34 WorldCat member libraries worldwide

A complete and comprehensive description of the high resolution wind (HRW) model is presented. The HRW model has been in development at the U.S. Army Research Laboratory, formerly U.S. Army Atmospheric Sciences Laboratory, since 1978. This model is a two-dimensional, diagnostic atmospheric surface-layer wind model with a horizontal grid spacing of the order of 100 m over a domain of about 5 by 5 km. It uses Gauss? principle of least constraint and a direct variational relaxation method to adjust an initially uniform wind field to conform with topography, mass conservation, and buoyancy forces. A distinctive feature of the model is the use of a non-orthogonal, terrain following, warped coordinate system. A valuable observational dataset of surface wind has been provided from the field study of Meteorology and Diffusion Over Non-Uniform Areas (MADONA) at Porton Down, Salisbury, England during September and October 1992. Using the MADONA data, a critical evaluation for the HRW model for 39 cases has been carried out. The results of this study are presented, indicating both the range of validity and the limitations of the HRW model
Annual report by U.S. Army Research Laboratory( )

in English and held by 16 WorldCat member libraries worldwide

The present state of amperometric nanowire sensors for chemical and biological detection by M. H Ervin( Book )

2 editions published in 2006 in English and held by 5 WorldCat member libraries worldwide

This report reviews the research in chemical sensing at the nanometer scale using amperometric detection focusing on publications from January 2004 to September 2005. The devices discussed fall into two categories: chemresistors and chemFETs. In either configuration, the number of carriers available in the channel, and hence the device's transconductance, changes as a function of analyte exposure. Devices based on inorganic nanowires (specifically limited to metal oxides and silicon), conductive organic polymer fibers, and carbon nanotubes are discussed as issues of sensitivity, selectivity, response/refresh times, etc
Characterizing lasers that emit widely diverging radiation by Richard L Tober( Book )

2 editions published in 2008 in English and held by 4 WorldCat member libraries worldwide

It is often difficult to accurately measure the power emitted from mid- and long-wave IR lasers because their inherently large radiation divergence. This is simply due to the fact that experimental geometry limits the solid angle of the emitted radiation that the sensitive area of a power meter can capture. However, one can confidently estimate the total power emerging from a widely diverging laser by integrating the power of an elliptically symmetric Gaussian beam that is incident on the meter's sensitive surface
Comparison of the inversion periods for mid-wave IR (MidIR) and long-wave IR (LWIR) polarimetric and conventional thermal imagery( Book )

2 editions published in 2010 in English and held by 4 WorldCat member libraries worldwide

Secure link middleware by Brian B Luu( Book )

2 editions published in 2008 in English and held by 3 WorldCat member libraries worldwide

One of the challenges for the U.S. National Archives and Records Administration (NARA) is to provide essential information assurance (IA) services for sensitive electronic records archives (ERA) in transit between networked computer systems. Current software technologies for securing data in transit rely on cryptographic algorithms and protocols provided in IP Security (IPSec), Virtual Private Network (VPN), or Secure Shell (ssh). The general difficulties of using IPSec and VPN are the complexity and compatibility. IPSec has been evolved and updated with new standards since 1995 (with RFC 1825-1829) to 2005 (with RFC 4301-4309). VPN are generally designed and built based on proprietary algorithms. Usually, they should be acquired, installed, and operated from the same manufacturer. Therefore, typically, IPSec and VPN are implemented and operated at network routers by network administrator to provide security for network traffic between local area networks (LAN) rather than being used by end users at system level. For example, IPSec or VPN are used to connect internal LANs of different sites of an organization through a public network such as the Internet. But with this type of operation, there are no end-to-end encryptions between any two networked computers in the same LAN or in different LANs. Hence, communication traffic of two computers in a same LAN or communication traffic from a local node to its router has no protection. To meet NARA's technical requirements for having end-to-end encryption and authentication at the computer system level, Army Research Laboratory (ARL) developed a secure communication network middleware called "Secure Link" capable of providing essential IA services for accessing or transferring sensitive ERA between any two networked computers. This report documents the development of ARL Secure Link
Mechanical response of future combat systems (FCS) high-energy gun propellants at high-strain rate by Michael G Leadore( Book )

2 editions published in 2002 in English and held by 1 WorldCat member library worldwide

Five lots of Future Combat Systems high-energy gun propellants were tested in uniaxial compression at high-strain rate. A production lot of JA2 that is currently used in the M865 round was also tested for comparison purposes. The materials were tested for comparison purposes. The materials were tested while conditioned at temperatures of 21 deg, 63 deg, and -32 deg C. The materials were taken to ^60% strain using a deformation rate of 1.3 m/s. The stress at failure, strain at failure, compressive modulus, failure modulus, incremental energy density, and the fracture assessment values were recorded for each test
A new high-speed, high-cycle, gear-tooth bending fatigue test capability( )

1 edition published in 2011 in English and held by 0 WorldCat member libraries worldwide

Effects of gas turbine component performance on engine and rotary wing vehicle size and performance by Gregory Paul Herrick( )

1 edition published in 2010 in English and held by 0 WorldCat member libraries worldwide

Applying the principles of the Government Performance and Results Act to the research and development function : a case study submitted to the Office of Management and Budget by U.S. Army Research Laboratory( )

1 edition published in 1996 in English and held by 0 WorldCat member libraries worldwide

ARL Intranet Analysis and Development Study by Dana L Ulery( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

We analyze the concept and practice of Intranets used in midsize and large enterprises, focusing on their use and impact within research and development (R & D) organizations. We examine the shift from the old concept of business computing to the modern concept of enterprise computing, and consider Intranets-a class of enterprise computing-relative to enterprise computing trends. By analyzing in detail some case studies selected from the literature, on-site visits, and workshop discussions, we then offer three tools to frame the critical issues and provide structure for systematically constructing strategic Intranets specific to a given organization's mission and culture. Arguing that creation of an Intranet that projects an image of a world-class organization demands no less than a world-class enterprise that is strategically enabled through information technology, we then analyze the current U.S. Army Research Laboratory (ARL) Intranet and present a three-step action plan to expedite ARL's movement toward creation of such an Intranet
Time-Varying Electrostatic Modeling Techniques by David Hull( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

ARL developed computer models and modeling techniques based on the Method of Moments, and has used them for some time to study electrostatic fields associated with targets, terrain clutter, and sensors of interest. Recent extensions to these unique ARL capabilities allow some dynamic conditions to be modeled as a time series of quasi-static models. These new techniques have enabled us to study the extremely low-frequency (ELF) effects of rotating helicopter blades on both airborne and remote sensors. Examples show how a dynamic helicopter model can be used to compute time-varying airborne fieldmeter calibration factors for aircraft charge and atmospheric electric field measurements, and remote ELF electric fields which might be detected by passive surveillance sensors
Modeling and Analysis of Adjacent Grid Point Wind Speed Profiles within and Above a Forest Canopy by Arnold Tunick( Book )

2 editions published in 1999 in English and held by 0 WorldCat member libraries worldwide

Adjacent grid point profile data from the canopy coupled to the surface layer (C-CSL) model are examined to illustrate the model's capability to represent effects of the surface boundary on wind flow. Vertical cross sections of the wind field and contours of derived momentum flux data are presented. Depictions of the vegetation morphology and terrain elevation data are also given for the areas studied. The C-CSL model provided data for an analysis of the surface layer wind flow within and above five different sections of vegetative canopy. As a result, the modeled wind speed profiles appeared to be in line with experimental observations. Momentum flux (Reynolds stress) data were calculated from the wind speed profile gradients. Within the canopy layer, the structure of the profiles of momentum flux appeared to agree well in contrast to data from two other turbulence closure models. In the layer above the forest canopy top, the structure of the momentum flux profiles were in line with experimental observations. In data-limited areas, this kind of modeling can be used to support land-based operations where the transport and diffusion of smoke, chemicals, or other toxic aerosols in complex terrain are a primary concern
Theoretical investigation of H₂ combustion on [alpha]Al₂O₃ support by Jennifer Synowczynski( )

1 edition published in 2008 in English and held by 0 WorldCat member libraries worldwide

Aviator Behavior and Performance as Affected by Aircrew Life Support and Protective Equipment by John D Waugh( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

A methodology for quantifying Army rotary wing aviator performance as influenced by aircrew life support, survival, and nuclear-biological-chemical clothing and equipment ensembles was examined in a set of experiential trials conducted in an AH-64 (Apache) combat mission simulator. The methodology was based on an aircrew evaluation procedure originally developed for use in the crew coordination training of all Army aviators. It uses a set of 13 basic qualities, each with behavioral anchors and a 7-point rating scale, and it is administered by specifically trained senior aviator evaluators. Ten crews, two aviators in each, while fully encumbered, performed three combat missions for record, representative of typical operational tasks, with one "variation" trial conducted without the over-water components of the ensemble. Measures of effectiveness and flight data, as well as stress assessment and equipment "complaints" citations, were recorded. The results indicated that the behavior-anchored scores were not sensitive enough to statistically discriminate among the independent variables of repeated measures and the variation trials even though graphically, differences were readily apparent. Attempts to apply transformations to the data, based on the aviator subjects' relative flying experience and their apparent accommodation to the trials were also statistically unsuccessful. The additional measures collected did not yield statistically significant discriminations nor did they correlate well with the evaluation score. A number of options for improving the technique are offered
An experimental investigation of the influence of the lubricant viscosity and additives on gear wear by T. L Krantz( )

1 edition published in 2005 in English and held by 0 WorldCat member libraries worldwide

Data Transfer Report - 30-mm Enhanced Alternate High-Energy Propellant Program (EAHEP): Test Fixture and Propellant Evaluation by Melvin B Ridgley( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

Measurements in support of the 30-mm Enhanced Alternate High-Energy Propellant Program (EAHEP) were taken at the Building 390 recording facility. Propellants evaluated for this series of tests were M30, U.S. Army Armament Research, Development, and Engineering Center (ARDEC) 7994, BAMO-AMMO/CL20, BAMO-AMMO/CL20/NQ, and BAMO-AMMO-RDX. This facility, the central data acquisition network for the Propulsion and Flight Division (PFD) of the U.S. Army Research Laboratory (ARL), was operated by the Experimental Ballistics Team (EBT) of the Propulsion Branch (PB). The testing was conducted in support of an ongoing Army effort to further investigate high-energy gun propellants that promise enhanced performance from existing tank and artillery systems
 
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Alternative Names

controlled identityU.S. Army Ballistic Research Laboratory

controlled identityUnited States. Army Laboratory Command

AMSRL

ARL

army research laboratory

Army Research Laboratory (U.S.)

Australia Aeronautical Research Laboratory

Australia. Dept. of Defence. Aeronautical Research Laboratory

Estats Units d'Amèrica. Army. Research Laboratory

United States Aeronautical Research Laboratories

United States Aeronautical Research Laboratory

United States. Air Force. Aeronautical Research Laboratories

United States. Army. Research Laboratory

United States Research Laboratory

United States. Wright Air Development Division. Aeronautical Research Laboratory

US Army Research Laboratory

USA Air Force Research Division Aeronautical Research Laboratory

USARL

美国军方调查实验室

美國軍方調查實驗室

美國陸軍研究實驗室

Languages
English (73)

Covers
2009-2010 Assessment of the Army Research Laboratory