| Leaders Can Learn from Druyun's Ethical Lapses and Their Consequences |
25 MAR 2008 |
39 pages |
| Authors:
Margaret C. Larezos; ARMY WAR COLL CARLISLE BARRACKS PA
|
 | Darleen Druyun was the Air Force's second highest procurement official. In 2004, she was convicted of violating conflict-of-interest laws and jailed. The ramifications to the U.S. military were far reaching and continue to be felt today. The initial impact to the Air Force was an extensive reexamination of past contract actions, the need to recompete several contracts, the rework of multiple protests, the delay of weapon system deliveries, and an ... |
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| Multi-Sensor Systems Development for UXO Detection and Discrimination: Man-Portable Dual Magnetic/Electromagnetic Induction Sensor |
FEB 2008 |
41 pages |
| Authors:
David Wright; Jr. Bennett Hollis H.; Linda P. Dove; John H. Ballard; Morris P. Fields; Tere A. DeMoss; Dwain K. Butler; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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| An unexploded ordnance (UXO) survey instrument that simultaneously collects total field magnetic data and frequency domain electromagnetic (FDEM) data was developed and tested for the detection and characterization of buried UXO objects. The system comprised an FDEM sensor operating at a single frequency of 9.8 kHz and a cesium vapor magnetometer. The system was tested in dynamic survey (detection) and cued analysis (characterization) modes at the Naval Research Laboratory Blossom ... |
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| The Case for Using the Spherical Model to Calculate the Interpolated Points in the Connectivity Software Deployment Module |
FEB 2008 |
54 pages |
| Authors:
G. W. Still; James F. Nealon; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD SURVIVABILITY LETHALITY ANALYSIS DIRECTORATE
|
| A new software package undergoing development through joint efforts by the Missile Defense Branch at Aberdeen Proving Ground, Maryland, and the Communications Electronic Warfare Branch at Fort Monmouth, New Jersey, of the U.S. Army Research Laboratory's (ARL) Survivability/Lethality Analysis Directorate models and predicts the viability of communications links between moving nodes. Interpolation calculations will be needed to predict the location of the moving nodes between user-provided way points. The developers ... |
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| Data Compression Trade-Offs for TDOA/FDOA Geo-Location Systems |
FEB 2008 |
42 pages |
| Authors:
Mark L. Fowler; STATE UNIV OF NEW YORK AT BINGHAMTON RESEARCH FOUNDATION
|
| The research results focus on new data compression insights and methods that can enable the sharing of data for enhanced geolocation of RF emitters. The work was focused in four areas: (1) Data compression ideas were applied to the issue of how to select and configure a set of available sensors for location processing. This proved to be a challenging task. (2) The short-time Fourier transform (STFT) was integrated into ... |
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| Long-Range Ballistic Missile Defense in Europe |
09 JAN 2008 |
|
| Authors:
Steven A. Hildreth; Carl Ek; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
 | Successive administrations have urged the creation of an antimissile system to protect against long-range ballistic missile threats from rogue states. The Bush Administration believes that North Korea and Iran are strategic threats and questions whether they can be deterred by conventional means. The Administration has built long-range missile defense bases in Alaska and California to protect against North Korean missile threats. Although the system has been tested, most agree that ... |
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| Tactical Medical Coordination System (TacMedCS) |
06 NOV 2007 |
28 pages |
| Authors:
Diane Williams; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| The Tactical Medical Coordination System (TacMedCS) provides rapid casualty identification under adverse conditions, enables visibility of casualty status from the point of injury through medical treatment in higher echelons of care, maintains an electronic treatment record for the patient, utilizes non-physical-contact data transmission and storage media, and uplinks casualty information to a theater information network. Additionally, the current version of TacMedCS provides information to the corpsman in the field about ... |
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| Wireless Sensor Network With Geolocation |
01 NOV 2006 |
7 pages |
| Authors:
James Silverstrim; Roderick Passmore; Kaveh Pahlavan; Brian Sadler; INNOVATIVE WIRELESS TECHNOLOGIES FOREST VA
|
| Geolocation for indoor and urban areas is becoming an essential capability for military, public safety, and commercial wireless applications. These systems are crucial for situational awareness, enabling soldiers and first responders to complete their missions in a more secure, controlled environment that can save lives. Maintaining situational/positional awareness in indoor and urban environments is difficult because buildings, walls and other obstacles obstruct vision and RF propagation. Innovative Wireless Technologies (IWT) ... |
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| Selected Problems of Sniper Acoustic Localization |
01 OCT 2006 |
9 pages |
| Authors:
A. Kawalec; J. Pietrasinski; E. Danicki; MILITARY UNIV OF TECHNOLOGY WARSAW (POLAND)
|
| Acoustic signals of small arm's fire, the muzzle blast and the shock wave generated by a supersonic bullet in air, are difficult to mask and can be exploited for localization of the hidden sniper. The paper presents the system of acoustic measurements based on a number of both directional and omnidirectional microphones detecting the shock wave only, yielding exact solution for the sniper direction in spite of certain measurement errors ... |
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| Performance Metrics for Acoustic Small Arms Localization Systems |
01 OCT 2006 |
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| Authors:
Jacques Bedard; DEFENCE RESEARCH AND DEVELOPMENT CANADA VALCARTIER (QUEBEC)
|
| In the past ten years, in-air acoustic sensor systems have been developed for the localization of small arms fire. A number of countries have systems at different stages of advancement that they have deployed on operations. These systems are being mounted on vehicles to provide crews with better situational awareness, thereby enhancing crew safety and force protection. The acoustic system is starting to be incorporated into vehicle equipment as a ... |
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| A Framework for Developing Mobile Location Based Applications |
01 OCT 2006 |
28 pages |
| Authors:
Andrej Krevl; Tone Vidmar; Matjaz Pancur; Mojca Ciglaric; Saso Tomazic; Ales Zavec; Stanko Ciglaric; LJUBLJANA UNIV (SLOVENIA)
|
| Location based services and applications are buzzwords nowadays, yet they have been around for quite some time in a variety of applications. However, due to high costs of the positioning equipment the number of such applications is increasing too slowly. Even though "location based" is a hot topic, there are no publicly available application development frameworks that would enable rapid location based application development on COTS hardware. The paper presents ... |
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| Environmental Assessment (EA): Proposed Well and Reservoir (Roy City Corporation), Hill Air Force Base, Utah |
09 JUN 2006 |
50 pages |
| Authors:
Randal Klein; Kay Winn; STREAMLINE CONSULTING LLC FARMINGTON UT
|
| Hill AFB will allow Roy City Corporation to provide improvements to its culinary water system. The proposed action, alternate locations, and the no action alternative were all considered. Temporary construction related emissions would be created. Long-term air emissions would be limited to operating the emergency generator approximately 100 hours per year. Solid and liquid wastes containing regulated products would all be properly stored, transported, disposed Hill AFB will allow Roy ... |
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| Characterizing the Impact of Precision Time and Range Measurements from Two-Way Time Transfer Systems on Network Differential GPS Position Solutions |
MAR 2006 |
142 pages |
| Authors:
Kendra B. Cook; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Many GPS applications require precise relative positioning of a network of vehicles (such as aircraft, tanks, troops, etc). Although GPS has become commonplace in today's society, there are still limitations affecting the system. Recent advances in dynamic Two-Way Time Transfer (TWTT) have potentially provided a means to improve precise relative positioning accuracy over differential GPS (DGPS)-only approaches. TWTT is a technique in which signals are simultaneously exchanged between users. This ... |
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| Robot Localization Using Visual Image Mapping |
MAR 2006 |
116 pages |
| Authors:
Carrie D. Crews; AIR FORCE INST OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| One critical step in providing the Air Force the capability to explore unknown environments is for an autonomous agent to be able to determine its location. The calculation of the robot's pose is an optimization problem making use of the robot's internal navigation sensors and data fusion of range sensor readings to find the most likely pose. This data fusion process requires the simultaneous generation of a map which the ... |
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| Determining In-Flight Tracker Accuracy |
MAR 2006 |
8 pages |
| Authors:
Corbin G. Koepke; Vincent Parisi; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE
|
| Evaluating a system in flight poses challenges that are not found in a laboratory environment. This paper discusses some of the issues involved in conducting an in-flight test to evaluate tracker accuracy, such as head movement, synchronization of time, changing coordinate systems, and interpolating data. The paper describes six types of accuracy: laboratory static, laboratory dynamic, installed static, installed dynamic, operational static, and operational dynamic. In general, as the realism ... |
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| Computer Programs for Solar Concentrator Focus Control (Preprint) |
05 DEC 2005 |
33 pages |
| Authors:
Joseph N. Beasley; Michael R. Holmes; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
|
| This presentation describes two methods for imaging an absorber used as a new sensor in determining the location of the focal spot for a solar concentrator. The absorber is used as a sensor in both methods, but in slightly different ways. The first method developed is an optimization method inspired by Shack-Hartmann wave front sensing. This optimization utilizes masking and a correlation calculation to determine the error from the current ... |
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| Enhanced Ultrasound Visualization of Brachytherapy Seeds by a Novel Magnetically Induced Motion Imaging Method |
02 NOV 2005 |
7 pages |
| Authors:
Stephen McAleavey; DUKE UNIV DURHAM NC
|
| The authors report on their progress in developing Magnetically Induced Motion Imaging (MIMI) for unambiguous identification and localization of brachytherapy seeds in ultrasound images. Ultrasound guided brachytherapy is a common treatment for prostate cancer. Accurate determination of seed location is critical for the delivery of the correct radiation dose distribution to the prostate. They report initial results from their finite-element model, which provides an estimate of the torque required for ... |
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| Parametric Study of the Towline Shape of an Aircraft Decoy |
19 OCT 2005 |
80 pages |
| Authors:
Tyler L. Richardson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Some of today's aircraft use decoys as a defense against enemy weapons. The decoy is towed behind the aircraft with the intention of attracting the weapon propagator by deception, trying to mislead the weapon into detecting it instead of the aircraft. An aircraft deploys a decoy via a towline extending out behind and below the aircraft. However, during some maneuvers, the towline moves up into the jet exhaust plume of ... |
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| Analysis of an Emitter Location Algorithm for use in ESM Systems |
SEP 2005 |
|
| Authors:
J. S. Groot; TNO Defence Security and Safety The Hague (Netherlands)
|
| The report analyses a least squares algorithm for 3D emitter location. The data used is a time series of frequency measurements performed by an airborne receiver, in conjunction with speed and position measurements of the platform. The analysis is done analytically as well as through Monte Carlo simulation. The accuracy generally improves with decreasing frequency and speed errors. A larger RF and a frequent frequency measurement are also beneficial, as ... |
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| Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging: III. Measurement for URSA Minor |
JUL 2005 |
22 pages |
| Authors:
Slawomir Piatek; Carlton Pryor; Paul Bristow; Edward W. Olszewski; Hugh C. Harris; Mario Mateo; Dante Minniti; Christopher G. Tinney; NEW JERSEY INST OF TECH NEWARK DEPT OFPHYSICS
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| This article presents a measurement of the proper motion of the Ursa Minor dwarf spheroidal galaxy determined from images taken with the Hubble Space Telescope in two distinct fields. Each field contains a quasi-stellar object that serves as the reference point. Integrating the motion of Ursa Minor in a realistic potential for the Milky Way produces orbital elements. The perigalacticon and apogalacticon are 40 (10, 76) and 89 (78, 160) ... |
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| Auditory Detection and Sound Localization for Computer-Generated Individual Combatants |
JUN 2005 |
115 pages |
| Authors:
John C. Michaud; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Soldiers rely predominantly on vision to detect targets yet other senses may cue their sense of sight. Contrarily most army combat simulations employ only visual cues. The focus of this thesis is to enhance combat simulations by providing a method by which computer-generated entities can detect and locate objects via a phenomenon known as "sound localization." The Auditory Detection Program is used to represent a human's hearing and data from ... |
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| Electronic Attack and Sensor Fusion Techniques for Boost-phase Defense Against Multiple Ballistic Threat Missiles |
JUN 2005 |
|
| Authors:
Kursad Yildiz; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The first objective of this thesis is to investigate the effect of several forms of electronic attack (EA) on the radio frequency (RF) sensors used within a boost-phase ballistic missile intercept system. The EA types examined include noise jamming, chaff, radar cross section (RCS) reduction, and expendable decoys. Effects of the EA methods are evaluated by examining the track position error at the sensor fusion output. Sensor fusion architectures investigated ... |
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| Closed Loop Control of a Cascaded Multi-Level Converter to Minimize Harmonic Distortion |
JUN 2005 |
105 pages |
| Authors:
Brian E. Souhan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As the United States Navy moves toward the all-electric ship, the need for a robust, high fidelity inverter for propulsion motors becomes mandatory. Military vessels require high power converters capable of producing nearly sinusoidal outputs to prevent torque pulsations and electrical noise that can compromise the mission location. This thesis presents a hybrid pulse-width- modulated controller for a 3x3 Cascaded Multi-Level Converter (CMLC). Ancillary results include a simple technique for ... |
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| Sexual Ethics, Organizational Climate, and the Air Expeditionary Force |
APR 2005 |
43 pages |
| Authors:
Christopher J. Urdzik; Christopher Toner; AIR UNIV PRESS MAXWELL AFB AL
|
| The established Air Force standards prohibiting adultery, fraternization, and unprofessional relationships have long recognized these acts as counter to good order and discipline due to the resulting negative impact on unit cohesion and morale. In the last 10 years, three major factors have combined to make sexual misconduct an increasing topic of concern for the USAF-the Air Expeditionary Force (AEF) rotation cycle, the steadily increasing gender mix serving on active ... |
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| Using Depot Inventory Position to Determine Transportation Mode of Retrograde Reparable Assets |
MAR 2005 |
65 pages |
| Authors:
Edward C. Snow; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| Air Force logistics policies direct the "expedited evacuation of reparables to the source of repair", in an effort to allow smaller inventories. Transportation Mode selection is based only on the asset itself. This focus works well when shipping assets out from the depot to a base. When a base ships an asset back to the depot however, the priority of the asset may not be the best way to select ... |
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| Minimizing Security Forces Response Times Through the Use of Facility Location Methodologies |
MAR 2005 |
145 pages |
| Authors:
Michael C. Dawson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Since the events of September 11, 2001, security for the nation's Intercontinental Ballistic Missile force has become a prominent concern for personnel in the highest levels of government. This has resulted in many physical security upgrades and new methods to counter hostile activities. This research seeks to find the optimal placement for one layer of the security net protecting these crucial assets, the daily-deployed security forces Fire Teams. The problem ... |
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| Research on Seismic Calibration of the International Monitoring System in Northern Eurasia |
NOV 2004 |
572 pages |
| Authors:
Gerald I. Kent; Victor V. Kirichenko; Yuri Kraev; SCIENCE APPLICATIONS INTERNATIONAL CORPSAN DIEGO CA
|
| The main goals of the "Russian Seismoacoustic Research for CTBT monitoring" project were: Calibration of seismic stations of the Russian Academy of Sciences (RAS) included in the International Monitoring System (IMS), Development of travel time data for calibration studies in northern Eurasia, Collection data on peaceful nuclear explosions (PNEs) in the former Soviet Union, The Geophysical Survey (GS) of RAS and the Complex Seismological Expedition (CSE) of the Joint Institute ... |
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| The Use of Hydroacoustic Phases for the Detection of Oceanic Events: Observations and Numerical Modeling |
JUL 2004 |
63 pages |
| Authors:
Catherine DE Groot-Hedlin; Donna Blackman; John Orcutt; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA
|
| Hydroacoustic monitoring of the Comprehensive Nuclear Test Ban Treaty (CTBT) requires the ability to detect and locate phenomena that give rise to acoustic signals. An improved understanding of the coupling of seismic energy to acoustic energy is necessary to improve location estimates of earthquakes and volcanic eruptions. Using known variations in near-source bathymetry, the authors demonstrated that scattering of seismic to acoustic energy at a rough seafloor yields the approximate ... |
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| Health and Safety Issues of Telecommuters: A Macroergonomic Perspective |
JUN 2004 |
5 pages |
| Authors:
Michelle M. Robertson; LIBERTY MUTUAL RESEARCH INST FOR SAFETY HOPKINTON MA
|
| With the rising number of telecommuters who are working in non-traditional work locations, health and safety issues are even more critical. While telecommuting programs offer attractive alternatives to traditional work locations, it is not without challenges for employers and workers. A macro ergonomics approach or work system design for telecommuting programs is proposed to address these new challenges. This approach explains the impact of organizational, psychosocial and workplace risk factors ... |
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| Application of Sequential Auction Techniques to Nonlinear Targeting Assignment for Space-Delivered Entry Vehicles |
MAY 2004 |
123 pages |
| Authors:
Brian A. Stiles; RICE UNIV HOUSTON TX
|
| In the future, the arsenal of the U.S. military will include Space- delivered weapons, released by reusable launch vehicles. Entry vehicles released from the launch platforms will be capable of guiding to target locations throughout the world. In order to adequately incorporate these weapons into military plans, theater commanders will require sophisticated planning algorithms to maximize the likelihood of destroying the most important targets. This thesis develops a target assignment ... |
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| Sensitivity of Track Velocity Error to Data Registration and Dynamic Errors within a Distributed System |
13 APR 2004 |
43 pages |
| Authors:
JOINT SINGLE INTEGRATED AIR PICTURE SYSTEM ENGINEERING ORGANIZATION (JSSEO) ARLINGTON VA
|
| The success of accurately tracking an aerospace object is strongly dependent on how well the position, velocity, and acceleration of the object is known. Understanding what contributes to errors in these quantities, and how, is important in predicting the performance of a tracking system or as in the case of a Single Integrated Air Picture (SIAP) a distributed tracking system. A previous JSSEO Technical Report investigated position estimate errors as ... |
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| A Novel Wave Front Method Used for Tracking Terrestrial Concentrator Focal Spot Location |
26 MAR 2004 |
13 pages |
| Authors:
Joseph N. Beasley; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
| This paper presents a new sensing method for tracking terrestrial concentrator focal spot location. The new method utilizes the shape and mirror- like surfaces of the absorber as a wave front sensor. The paper begins with a discussion of wave front sensing and how it can be used in optical systems to measure phase differences in light waves across an aperture. The wave front sensing method is then modified from ... |
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| Vibrometric Detection of Beam Damage Due to Inclusions |
MAR 2004 |
130 pages |
| Authors:
Aron J. Reifsnyder; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The Air Force Institute of Technology, in conjunction with the Structural Health Monitoring branch of the Air Force Research Laboratory, is researching methods of determining effects of notch location and size on beam structures using modal frequency analysis. This thesis explores the ability to detect included notches of varying magnitudes and locations within the frequency domain of an isotropic cantilever beam. A series of experiments employing centerline-notched 2024 T3 and ... |
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| Geographically Locating an Internet Node Using Network Latency Measurement |
MAR 2004 |
110 pages |
| Authors:
Eugene D. Turnbaugh; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Discovering the geographic location of a node using only its Internet Protocol (IP) address and latency measurements is a big challenge. The difficulties include accurate latency measure, network address translation (NAT) masking, service blocking, disparate physical configuration, dissimilar network hardware, and inaccurate and limited measuring tools. Using only latency measurements from the Internet, this research successfully geolocated the nearest city to a destination node 100 percent of the time to ... |
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| REMIS: A Tool to Facilitate Innovation, Standardization and Validation in the Creation of Ergonomic Surgical Simulators |
FEB 2004 |
18 pages |
| Authors:
W. B. Seales; KENTUCKY UNIV RESEARCH FOUNDATION LEXINGTON
|
| The goal of this work is to develop and test new technologies that will break down the barriers that block more surgeons from attaining and continuing to practice (without injury or pain) high levels of skill in minimally invasive surgery (MIS). This project will develop new technology by concentrating on three major research thrusts: Smart Image: the project will develop and evaluate new approaches for extracting, fusing, and presenting information ... |
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| Analysis of Head Motion in Rotary-Wing Flight Using Various Helmet- Mounted Display Configurations (Part 3. Roll) |
AUG 2003 |
140 pages |
| Authors:
Jessica A. Stelle; Ryan J. Rostad; Clarence E. Rash; John S. Crowley; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
|
| In spite of an immense increase in interest in helmet-mounted displays (HMDs) over the past two decades, there have been few studies on head motion while using HMDs in operational flight. Rotary-wing flight conducted using a number of HMD configurations has resulted in a head position database that will be useful in filling this void. Various analysis techniques have been applied to investigate characteristics of roll (tilt) head position distributions ... |
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| Imagery Enhancement to the Disposable, Air-droppable, Meteorological Tower Array (DAMTA) |
JUN 2003 |
141 pages |
| Authors:
Jacob Bailey; Dave Bunt; Chris Green; Gregory A. Lamm; James M. Buckingham; MILITARY ACADEMY WEST POINT NY DEPT OFSYSTEM ENGINEERING
|
| The Army Research Laboratory (ARL), Computational and Information Sciences Directorate, Battlefield Environment Division, at White Sands Missile Range (WSMR), New Mexico is currently involved in overseeing the development of a new battlefield weather information resource. This new resource deemed DAMTA (Disposable, Air-droppable, Meteorological Tower Array) will consist of multiple individual towers, which will be dispersed over selected battlefield locations by an airborne platform. They will collect and transmit meteorological data ... |
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| Spiral Bevel Pinion Crack Detection in a Helicopter Gearbox |
JUN 2003 |
16 pages |
| Authors:
Harry J. Decker; David G. Lewicki; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH GLENN RESEARCH CENTER
|
| The vibration resulting from a cracked spiral bevel pinion was recorded and analyzed using existing Health and Usage Monitoring System (HUMS) techniques. A tooth on the input pinion to a Bell OH-58 main rotor gearbox was notched and run for an extended period at severe over-torque condition to facilitate a tooth fracture. Thirteen vibration-based diagnostic metrics were calculated throughout the run. After 101.41 hours of run time, some of the ... |
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| Linguistic and Location Effects in Compliance to Pesticide Warning Labels |
14 MAY 2003 |
|
| Authors:
Judy Edworthy; Elizabeth Hellier; Nicola Lambell; Clare Grey; Kristeen Aldrich; PLYMOUTH UNIV (UNITED KINGDOM) DEPT OFPSYCHOLOGY
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| Experimental studies investigated the effect of the location of safety information on observed compliance behaviour. It was revealed that for all users presenting safety information in the directions for use section resulted in the highest levels of compliance. For amateurs presenting safety information in an additional leaflet resulted in the lowest levels of compliance whereas for professionals the lowest levels of compliance were demonstrated when safety information was presented the ... |
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| Risk Assessment to Increase Safety and Health in the Estonian Work Environment |
14 MAY 2003 |
|
| Authors:
Piia Tint; Virve Siirak; TALLINN TECHNICAL UNIV (ESTONIA)
|
| The first step to get insight in the hazards in the working environment in Estonia with a labour force 0.65 million was taken by the National Board of Health Protection in the beginning of 1996. The existing chemical physical and biological agents in the working environment were investigated with the help of local health inspectors in all counties. Hazards and workers at risk were identified. The results of the analysis ... |
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| Way-Finding and Maritime Emergency Signs |
14 MAY 2003 |
|
| Authors:
Michael May; DANISH MARITIME INST LYNGBY (DENMARK)
|
| Some visual and semantic problems in emergency signs and maps on passenger ships will be discussed using examples from Danish ferries that were studied as part of a European project on design for Mustering and Evacuation of Passengers ("MEPdesign"). Starting point are earlier findings on the effectiveness of signs versus (You-Are-Here) maps for wayfinding in buildings. Focus is on problems with the interpretation of emergency signs in the context of ... |
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| Recognition of Retroreflective Road Signs During Night Driving |
14 MAY 2003 |
|
| Authors:
J. Berzinsh; M. Ozolinsh; P. Cikmac; K. Pesudovs; LATVIA UNIV RIGA DEPT OF OPTOMETRY ANDVISION SCIENCE
|
| Temporal waveforms of the illumination at the driver eyes position were determined in various night traffic and weather conditions (ideal weather and correct aligned lights as compared with dirty lamps and raindrops on the windscreen). The statistics of retinal illumination were analyzed and a computer controlled technique was developed to simulate similar changes of eye illumination. The participant fixated on retroreflective optical stimuli at a distance of 5 m. The ... |
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| Determination of Atmospheric Density in Low-Earth Orbit Using GPS Data from the USNA Satellite |
02 MAY 2003 |
75 pages |
| Authors:
Katherine E. Groenenboom; NAVAL ACADEMY ANNAPOLIS MD DEPT OF AEROSPACE ENGINEERING
|
| The goal of this project was to use real-time data from the U.S. Naval Academy's Prototype Communications Satellite (PC-Sat) to calculate atmospheric density in the satellite's orbit over various time intervals. This involved using the latitude, longitude, altitude, and time data from a GPS receiver on board PC-Sat and transforming them into the orbiter's classical orbital elements (COEs). From these, the change in the size of the orbit can be ... |
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| Focused Logistics, Global Distribution & Stock Positioning: Why Putting Stocks in the Right Place, the First Time, Actually Matters |
07 APR 2003 |
|
| Authors:
Tim McNulty; ARMY WAR COLL CARLISLE BARRACKS PA
|
| Joint Vision 2010 established the concept of Focused Logistics as a new emerging operational concept. Joint Vision 2020 established the Transformation Path for implementing the logistics concepts to support the overarching DOD goals. In 1999 the Defense Logistics Agency and the US Transportation Command established a partnership designed to enhance the Defense Global Distribution system. The program developed to coordinate this action is the Strategic Distribution Management Initiative. Through the ... |
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| Corneal Damage From Mid-Infrared Laser Radiation |
APR 2003 |
14 pages |
| Authors:
Russell L. McCally; JOHNS HOPKINS UNIV BALTIMORE MD
|
| The research performed under this contract directly supports the U.S. Army Medical Research and Materiel Command (USAMRMC) mission to assess the health effects and hazards of non-ionizing electromagnetic radiation from laser systems. The data obtained will support evaluation of current permissible exposure limits promulgated by TEMED 524 and the ANSI Z-136 laser safety standards. The research addresses three main hypotheses: 1) Damage from 1.55 micro radiation is thermal. 2) Damage ... |
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| Spatial Disorientation in Military Vehicles: Causes, Consequences and Cures (Desorientation spaiale dans les vehicules militaires: causes, consequences et remedes) |
FEB 2003 |
|
| Authors:
NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE)
|
| Spatial disorientation (SD), a condition in which the operator fails to sense correctly the position, motion or attitude of the vehicle or of him/ herself, continues to be a cause of aircraft accidents, with accident rates that, unlike the overall rate, have not fallen over the past 15 years. The Symposium was convened to review current knowledge of the causes of SD and preventative measures, applicable to air land and ... |
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| Head Position Control and Target Localization Performance in Changing Gravito-Inertial Field |
FEB 2003 |
|
| Authors:
C. Bourdin; J. M. Prieur; F. Sares; G. M. Gauthier; J. P. Menu; MEDITERRANEE UNIV MARSEILLE (FRANCE) FACULTE DES SCIENCES DU SPORT
|
| A subject seated in a modern vehicle (i.e., aircraft) and performing motor tasks may be submitted to inertial forces (Coriolis and centrifugal forces). These forces are sources of spatial disorientation, leading to perturbations of sensor-motor behaviour. The coding of the position of the head, which carries visual and vestibular sensors, is of particular interest with regards to this problem. We have investigated the influence of the position of the head ... |
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| Tactile Torso Display as Countermeasure to Reduce Night Vision Goggles Induced Drift |
FEB 2003 |
|
| Authors:
Jan B. VAN Erp; J. A. Veltman; H. A. van Veen; A. B. Oving; HUMAN FACTORS RESEARCH INST TNO SOESTERBERG (NETHERLANDS)
|
| The degraded visual information when hovering with Night Vision Goggles may induce drift that is not noticed by the pilot. We tested the possibilities of counteracting these effects by using a tactile torso display. The display consisted of 64 vibro-tactile elements and presented information on the desired direction of notion only (simple version), or also included information on the current motion direction (complex version). The participants flew in a fixed-base ... |
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| Physical Modeling of a Floating Breakwater with a Membrane |
2003 |
91 pages |
| Authors:
Michael W. Hermanson; FLORIDA UNIV GAINESVILLE DEPT OF CIVILENGINEERING
|
| A physical model study of a floating breakwater with an attached vertical membrane was conducted. The objective was to determine if the wave protection provided by a floating breakwater can be improved by the addition of a membrane. The wave transmission characteristics were analyzed for nine different structural configurations. The different configurations examined the compliance of the moorings and the length, position, and permeability of the membrane. The nine configurations ... |
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| Findings and Implications of the Assignment Incentive Survey |
OCT 2002 |
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| Authors:
Diana S. Lien; Amanda B. Kraus; Heidi L. Golding; CENTER FOR NAVAL ANALYSES ALEXANDRIA VA
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| Because the Navy must order personnel into hard-to-fill billets, negative impacts on manning can result. Consequently, the Navy is considering ways to restructure the assignment system including the implementation of an Assignment Incentive Pay (AIP). The Assistant Deputy Chief of Naval Operations, Manpower and Personnel (N 1 B) asked the CNA Corporation to analyze the attractiveness of alternative incentives meant to persuade Sailors to volunteer for historically hard-to-fill billets. To ... |
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| Critical Velocity of Electromagnetic Rail Gun in Response to Projectile Movement |
AUG 2002 |
22 pages |
| Authors:
Jerome T. Tseng; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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| A model is developed to investigate file dynamic response of an electromagnetic rail gun induced by a moving magnetic pressure during launch of projectiles. As the projectile velocity approaches a critical value, resonance can occur and cause high-amplitude stress and strain in the rail at the instant and location of the projectile's passage. In this study, governing equations of a railgun under dynamic-loading conditions are derived that illustrate a lower- ... |
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