| Antibody Recognition of the Dengue Virus Proteome and Implications for Development of Vaccines |
Apr 2011 |
11 pages |
| Authors:
Stefan Fernandez; Emily D Cisney; Alexander P Tikhonov; Barry Schweitzer; Robert J Putnak; Monika Simmons; Robert G Ulrich; NAVAL MEDICAL RESEARCH CENTER SILVER SPRING MD
|
 | Dengue is a mosquito-borne infection caused by four distinct serotypes of dengue virus, each appearing cyclically in the tropics and subtropics along the equator. Although vaccines are currently under development, none are available to the general population. One of the main impediments to the successful advancement of these vaccines is the lack of well-defined immune correlates of protection. Here, we describe a protein microarray approach for measuring antibody responses to ... |
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| Energy Optimization Audit at Humphreys Engineer Center |
SEP 2008 |
59 pages |
| Authors:
Alexander Zhivov; Alfred Woody; Wagdy Anis; Marvin Keefover; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
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| This work conducted an Energy Optimization Assessment at the Humphreys Engineer Center, Alexandria, VA, to identify energy inefficiencies and wastes, and to propose energy-related projects that could enable the installation to better meet the energy reduction requirements mandated by Executive Order 13123, the Energy Policy Act (EPACT) of 2005, and the Energy Independence and Security Act (EISA)of 2007. The study was conducted by a professional Energy Team,composed of researchers from ... |
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| Performance Capability of a Damaged Lighter-Than-Air Vehicle Operating in the Near Space Regime |
MAR 2006 |
93 pages |
| Authors:
Jr Vogt Charles W.; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| This study investigates the ability of a high-altitude airship to maintain lift following the compromise of its lifting gas envelope. Accepted engineering principles are applied to develop a model that provides comparative analyses for airship depressurization alternatives following hull compromise. Specifically, maintaining lifting gas envelope overpressure to provide controllability in wind currents while sacrificing some buoyancy is compared with allowing envelope depressurization to occur with the goal of maintaining greater ... |
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| Incremental Maximum Flows for Fast Envelope Computation |
JUN 2004 |
9 pages |
| Authors:
Nicola Muscettola; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER
|
| Resource envelopes provide the tightest exact bounds on the resource consumption and production caused by all possible executions of a temporally flexible plan. We present a new class of algorithms that computes an envelope in O(Maxflow(n, m, U)) where n, m and U measure the size of the flexible plan. This is an O(n) improvement on the best complexity bound for an envelope algorithm known so far and makes envelopes ... |
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| Protocol for Field Testing of Tall Buildings to Determine Envelope Air Leakage Rate |
MAY 1998 |
166 pages |
| Authors:
AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
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| The objective of this project was to develop a relatively simple, yet accurate method for testing the envelope leakage rate of tall buildings. Alternative pressurization test techniques were developed and two methods, the floor-by-floor blower door method and the air handler method, were tested on two buildings. The floor-by-floor blower door method involves isolating and measuring the leakage flow rate through a single floor. Difficulty in eliminating inter-floor leakage in ... |
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| Development of Coatings Performance Specifications for Steel Exposed to the Atmosphere. Aluminum Epoxy Mastic and Epoxy/Urethane Systems |
OCT 95 |
203 pages |
| Authors:
Timothy D. Race; Mark A. Kelly; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| Provisions of the Clean Air Act Amendments of 1990 will restrict the use of high solvent-content paints beginning in 1996. Procurement reform indicates the use of other than military specifications and emphasizes the use of commercial products and performance specifications. In response to procurement reform and air quality regulations, the U.S. Army Corps of Engineers must replace some of its existing coating specifications. This study developed two performance-oriented commercial item ... |
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| Complex Envelope Properties, Interpretation, Filtering, and Evaluation |
01 FEB 91 |
94 pages |
| Authors:
Albert H. Nuttall; NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB
|
| The complex envelope of a narrowband waveform y(t) typically has logarithmic singularities, due to discontinuities in y(t) or its derivatives, which have little physical significance. The complex envelope also has a very slow decay in time, due to the discontinuous spectrum associated with its very definition; this slow decay can mask weak desired features of the complex envelope. In order to suppress these undesired behaviors of the mathematically defined complex ... |
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| Ground Vibration Characterization of a Missile System for Flutter Energy Definition |
JUN 90 |
77 pages |
| Authors:
John B. Hollyer; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Changing world scenarios and mission requirements have generated the need to retrofit an all aspect defensive missile system to Patrol airplanes. To this end the AIM-9 Sidewinder was selected and installed on a P-3 at the Navy Air Test Center for envelope expansion and separation tests. The added mass and pitch inertia of this system on the outer wing station may combine with the outer wing characteristics to cause catastrophic ... |
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| Supplemental Independent Assessment Report (IAR) on the Ram Air parachute System Production Prove-Out Phase: MT-1XX Technical Feasibility Test: GQ-360 |
DEC 89 |
|
| Authors:
Richard J. Hervert; ARMY TEST AND EVALUATION COMMAND ABERDEEN PROVING GROUND MD
|
 | Yuma Proving Ground (YPG), AZ, carried out a series of tests between May 1986 and June 1989 on a military adaptation to a commercial sporting parachute (the MT-1XX), seeking a military free-fall parachute system with a high glide-ratio, capable of carrying a Special Forces parachutist weighing up to 360 pounds (with equipment) for a long lateral offset distance (20-30 km) after exiting from a fixed-wing or rotary-winged aircraft at an ... |
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| Heat Pipes for Sodium-Sulfur Batteries |
AUG 89 |
70 pages |
| Authors:
John R. Hartenstine; THERMACORE INC LANCASTER PA
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| The objective of this program was to develop a variable conductance heat pipe (VCHP) for the thermal management of sodium-sulfur batteries. The VCHP maintains the sodium sulfur battery within a specified temperature rise limit (20 C) while the battery discharges a thermal load from 0 watts to 500 watts. A preliminary full scale thermal management design was developed for the sodium- sulfur battery, incorporating the VCHPs and supporting integration hardware. ... |
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| The All-Aspect Gunsight: Returning Short Range Combat Efficiency to the F-15 |
APR 88 |
|
| Authors:
Edwin R. Loskill; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
|
| The F-15 is unable to achieve kills quickly or efficiently in highly dynamic and unpredictable close-in combat due to the time and maneuvering required to employ its gun. This short range armament deficiency is attributable to the limited capabilities of the F-15's Lead Computing Optical Sight (LCOS). This paper advocates that the F-15 should be retrofitted with an all-aspect gunsight, namely the Enhanced Envelope Gunsight, in order to correct this ... |
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| Design of Laser-Induced-Heating Configurations for Generation and Control of Underwater Sound Beams |
28 FEB 87 |
|
| Authors:
Hsiao-an Hsieh; GEORGIA INST OF TECH ATLANTA ACOUSTICS AND DYNAMICS RESEARCH LAB
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| The dependence of laser generated sound fields on the spatial configuration and the temporal sequencing of laser deposition of heat onto a water surface is examined analytically. The thermoacoustic field equations yields a general strategy by which the optical to acoustic energy conversion efficiency can be increased. The generated underwater sound will propagate obliquely downwards within a narrow beam pattern. Such configuration correspond to the supersonic motion of a corrugated ... |
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| Remote Sensing of Ocean Sediment Volume Reverberation |
DEC 86 |
|
| Authors:
Chin-Wen Chang; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| An experimental study was performed to establish a technique for measuring the volume reverberation from ocean sediments. Two types of sediments (aggregate and fine sand) were used in this study. The inhomogeneity within the sediment caused considerable sample to sample fluctuation in the scattered waveform. This fluctuation was removed by spatial averaging to obtain a mean value over the sampling area. An approximate model for volume reverberation from sediments was ... |
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| Coherent C-Band Transponder Standards |
FEB 86 |
|
| Authors:
RANGE COMMANDERS COUNCIL WHITE SANDS MISSILE RANGE NM INTER- RANGE INSTRUMENTATION GROUP
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| The objective of this document is to define minimum transponder parameters in such a manner that any C-band instrumentation radar on any test range may use the transponder. It is not the goal of these standards to require all transponders to use the same pulse code spacing or the same spot frequencies. Rather, it is to establish an envelope of frequencies and codes within which all test ranges may operate. ... |
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| Speech Envelope Normalization, a Method to Improve SNR and Suppress Noise in Present and Future Radio Systems |
DEC 1982 |
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| Authors:
James C. Springett; NEOCOMM SYSTEMS INC LA CANADA-FLINTRIDGE CA
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| Speech envelope normalization (EN) is a compression process that transforms dynamic speech waveforms into constant envelope signals which are optimum for transmission and reception using analog radio equipment. The EN process reduces dynamic range requirements, maximizes speech SNR, increases intelligibility, and suppresses noise. The Report covers EN theory and properties, EN circuit implementations, experimental evaluations, and applications analysis. (Author) |
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| Proceedings of the Avionics Section, Air Armament Division, American Defense Preparedness Association: Affordable Avionic Systems and Technololgy Developments to Meet Evolving Air Warfare Requirements Held at Adelphi, Maryland on 2-3 December 1981 |
03 DEC 81 |
|
| Authors:
Edward M. Browne; James H. Marshall; Leland S. Kollmorgen; V. M. Farmer; Jon Desmond; AMERICAN DEFENSE PREPAREDNESS ASSOCIATION WASHINGTON DC
|
| Partial Contents: Searchwater - A Long Range Radar for Maritime Surveillance and Over-the-horizon Targeting; LIASAR(Laser Inertial Aided Synthetic Aperture Radar); The Near Term Scout Helicopter Mission Equipment Package; Improved Electronic Warfare Displays for Attack Aircraft; Infrared Guidance Demonstration; Operational Requirements for an Army Self Protection C W Jammer; R F Interferometer/Mast Mounted Sight; Electromagnetic Environment Simulator in the Air Electronic Warfare Mission; Angle Rate Bombing System Accuracy; ZAP - An ... |
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| Study to Determine the Impact of Aircrew Anthropometry on Airframe Configuration. |
31 OCT 1976 |
|
| Authors:
E. R. Atkins; R. L. Dauber; J. N. Karas; T. A. Pfaff; VOUGHT CORP DALLAS TEX SYSTEMS DIV
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| This technical report presents the results of a study to determine the impact of aircrew anthropometry on airframe shape, size, weight, and cost, and their influence on flight performance factors of hover ceiling, maximum rate of climb, and maximum level flight airspeed. Definition of crew station variables was completed for both human factors and machine factors corresponding to various percentile ranges. These defined variables were used to determine the influence ... |
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| Nonlinear Interaction of a Narrow Surface Spectrum with a Prescribed Surface Current. |
06 JUN 1975 |
|
| Authors:
Bruce J. West; Bruce I. Cohen; Kenneth M. Watson; PHYSICAL DYNAMICS INC BERKELEY CALIF
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| NOISE SURVEY HU-1A HELICOPTER WITH MODIFIED EXHAUST SYSTEM |
Jul 1961 |
50 pages |
| Authors:
R H SPENCER; Jr Sternfeld H; BOEING CO MORTON PA VERTOL DIV
|
| Noise levels of Army HU-1A helicopters 9-1632 (equipped with a modified exhaust system) and 58-2080 (standard configuration) were recorded under similar operating and ambient conditions. Some difference exists in the 200 ft directivity patterns of the aircraft in hover, along with an increase in high frequency noise in take-off and landing. The latter may be due to pilot techniques in achieving the requirements of Test 2. Except for these, however, ... |
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| THE USE OF THE MK 6 ACOUSTIC SYSTEM (AUDIO RECEPTION SYSTEM M-21) FOR SOUND RANGING |
AUG 1952 |
1 pages |
| Authors:
ROBERT K. WARING; YALE UNIV NEW HAVEN CONN LAB OF MARINE PHYSICS
|
| Ranging experiments were conducted using blasting caps as sound sources and a straight-line array of 4 hydrophones of an Mk 6 acoustic system installation. Modifications of the Mk 6 system included the addition of a filter section to the power supply to reduce the humlevel and the substitution of a 125 mm/sec pen recorder and 4 sparate amplifier channels for the original audio amplifier and recording system. An integrating device ... |
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| Aerodynamic Characteristics at High Speeds of Full-Scale Propellers Having Different Shank Designs |
13 FEB 1947 |
75 pages |
| Authors:
Julian D. Maynard; NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS LANGLEY FIELD VA LANGLEY AERONAUTICAL LABORATORY
|
| Paired curves of thrust coefficient, power coefficient, and propeller efficiency plotted against advance ratio are presented for two propellers, which are identical except for shank design, for blade angles ranging from 20 to 55 deg and speeds varying from 60 to 496 mph. Propeller with most aerodynamically efficient shank design obtained a maximum envelope efficiency of 95%, while propeller with cylindrical shank efficiency varied from 2% to 12% lower. |
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| The "Limiting Line" in Mixed Subsonic and Supersonic Flow of Compressible Fluids |
NOV 1944 |
37 pages |
| Authors:
Hsue-shen Tsien; CALIFORNIA INST OF TECH PASADENA
|
| Criterion for the breakdown of isentropic irrotational flow is discussed along with axially symmetric flow, limiting line, limiting hodograph and streamlines, envelope of characteristics in hodograph plane and lines of constant velocity in physical place, continuation of solution beyond limiting line, and general three-dimensional flow. Computational formulas are developed. Graphs indicate limiting line as the envelope of Mach waves, and streamline and velocity components in an axially symmetric flow. |
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ENVELOPE(SPACE)
