| Design and Implementation of Wiki Services in a Multilevel Secure Environment |
DEC 2007 |
142 pages |
| Authors:
Kar L. Ong; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
 | The Monterey Security Architecture (MYSEA) provides a distributed multilevel secure networking environment where authenticated users can securely access data and services at different security classification levels. The MYSEA framework utilizes both commercial-off-the- shelf (COTS) products and specialized secure high assurance components that enforce multilevel security (MLS) policy. Some collaboration among MYSEA users is enabled through the use of the Web-based Distributed Authoring and Versioning (WebDAV) mechanism. This thesis extends the ... |
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| Setup and Operation of the TeleEngineering Communications Equipment - Fixed Site (TCE-F), Version 3 |
NOV 2007 |
40 pages |
| Authors:
Jeffrey L. Williamson; Larry N. Lynch; Jeff Powell; Bryan Register; Richard Burrow; Jerry Strnger; Willism C. Fryer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS GEOTECHNICAL AND STRUCTURES LAB
|
| In fiscal year 1997, the U.S. Army Engineer Research and Development Center initiated a technology demonstration program to determine the feasibility of providing deployed troops with direct access to subject matter experts (SME). Direct access to the SME allows responses to engineering challenges beyond the in-theater capability to be provided without the time delays and costs associated with deploying the SME to the theater. The purpose of this report is ... |
|
| RFID Preventive Maintenance and Troubleshooting (Preprint) |
OCT 2007 |
12 pages |
| Authors:
Arijit Sengupta; Vikram Sethi; WRIGHT BROTHERS INSTITUTE INC DAYTON OHIO
|
| RFID installations consist of a large number of interdependent and interconnected components that function together as a unit for proper functionality and operations of the system. These components include tags, readers, antennas, networks, computing systems, power supplies, and peripherals, accessories and other mechanical systems that are controlled by the RFID implementation. Current RFID hardware is still relatively delicate and no two implementations are exactly the same. Even after an RFID ... |
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| XIAP as a Molecular Target for Therapeutic Intervention in Prostate Cancer |
OCT 2006 |
21 pages |
| Authors:
Colin S. Duckett; MICHIGAN UNIV REGENTS ANN ARBOR DIV OF RESEARCH DEVELOPMENT AND ADMINISTRATION
|
| We have made very significant progress towards the completion of the goals proposed in this award. In the first of the two Aims, we proposed to generate cell lines in which we stably suppressed XIAP using lentiviral-based RNA interference, and subsequently to constitute XIAP expression using mutants which are incapable of suppressing caspases. While we have achieved these goals using PC-3 cells, we have encountered some issues of non-specificity when ... |
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| Aircraft Fuel Cell Repair Equipment (AFCRE) |
09 AUG 2006 |
11 pages |
| Authors:
John M. Yerger; AIR MOBILITY WARFARE CENTER FORT DIX NJ AIR MOBILITY BATTLELAB
|
| PROBLEM: Aircraft fuel cell repair time is quite lengthy due to dated troubleshooting tools, sealant cure time and repair validation. PROPOSED SOLUTION: Use helium gas to troubleshoot leaks and validate repairs. Use new technology to remove and cure sealant. |
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| Intelligent Maintenance Aid (IMA) |
JUN 2006 |
83 pages |
| Authors:
Keith J. Shockley; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Technological complexities of current ground combat systems require advanced maintenance methods to keep the fleet in a state of operational readiness. Currently, maintenance personnel use paper Technical Manuals (TM) that are cumbersome and not easily transportable or updated in the field. This thesis proposes using the latest technology to support maintainers in the field or depot by integrating the TMs with the onboard diagnostics Built-In-Test (BIT) and Fault Isolation Test ... |
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| Operation of Long-Haul Non-LOS Wireless Tactical Networks |
MAR 2006 |
105 pages |
| Authors:
Christoforos Zachariadis; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF INFORMATIONAL SCIENCES
|
| The IEEE 802.16-2004 wireless standard is a robust, wireless, longhaul solution for connecting remotely located, forward operating bases. Proof of concept for this capability is the NPS OFDM testbed for the research and support of the communications and collaborative processes between tactical operators within a wireless network. This thesis will attempt to develop strategies for implementing network management, establish a performance baseline for the NPS testbed and define the acceptable ... |
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| Application of Cognitive Task Analysis in User Requirements and Prototype Design Presentation/Briefing |
OCT 2005 |
24 pages |
| Authors:
Christopher K. Curtis; Christian E. Randall; Brian Tidball; Scott Bachmann; Darryl Stimson; David E. Kancler; Megan E. Gorman; Mary McWesler; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE
|
| The goal of Aircraft Maintenance Intuitive Troubleshooting (AMIT) is to create job-aiding software, compatible with existing computer systems that will tell maintenance technicians what is really wrong with aircraft faster and more accurately than ever before. |
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| On Static Reachability Analysis of IP Networks |
01-Mar-2005 |
15 pages |
| Authors:
Jennifer Rexford; Hui Zhang; Geoffrey G Xie; Jibin Zahn; David A Maltz; Albert Greenberg; Gisli Hjalmtysson; CARNEGIE-MELLON UNIV PITTSBURGH PA
|
| The primary purpose of a network is to provide reachability between applications running on end hosts. In this paper, we describe how to compute the reachability a network provides from a snapshot of the configuration state from each of the routers. Our primary contribution is the precise definition of the potential reachability of a network and a substantial simplification of the problem through a unified modeling of packet filters and ... |
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| Advice and Learning in Problem Solving |
FEB 2005 |
53 pages |
| Authors:
Richard Wadinger; Marcel Becker; Alessandro Coglio; David Cyrluk; Stephen Fitzpatrick; KESTREL INST PALO ALTO CA
|
| Respect is an effort to allow a problem solver to accept advice and exhibit learning. It is based on a high-level description of a problem solver that can be examined and manipulated by the problem-solver itself. Experiments are being conducted in such problem-solving arenas as meeting scheduling, type checking, and logistics planning. By specializing a general-purpose problem solver to a declarative problem specification, we obtain a procedure for that particular ... |
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| An Augmented Virtuality Display for Improving UAV Usability |
2005 |
3 pages |
| Authors:
Nathan Rackliffe; BRIGHAM YOUNG UNIV PROVO UT
|
| Unmanned Air Vehicles (UAVs) promise to change the way we think about aircraft and airspace and they are being used in many different environments; everything from entertainment to search and rescue operations. One thing common amongst the different UAV platforms is that all use very difficult user interfaces. These interfaces have been designed by engineers and roboticists who do not have training in incorporating the needs of end users. This ... |
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| Illuminating Patterns of Perception: An Overview of Q Methodology |
OCT 2004 |
|
| Authors:
Maureen Brown; CARNEGIE-MELLON UNIV PITTSBURGH PA SOFTWARE ENGINEERING INST
|
 | Q methodology is a research method with a proven history for illuminating agreement and differences among individual and group perceptions. This technical note describes ways for applying Q methodology to assist software engineering processes. As a project management tool, it can help to articulate system requirements and project risk. It can also be used to identify many of the hidden risks and costs associated with system efforts. Q methodology complements ... |
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| Setup and Operation of the TeleEngineering Communications Equipment - Fixed Site (TCE-F), Version II |
OCT 2004 |
39 pages |
| Authors:
Jeffrey L. Williamson; Larry N. Lynch; Jeff Powell; Bryan Register; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| In FY97, the U.S. Army Engineer Research and Development Center initiated a technology demonstration program to determine the feasibility of providing deployed troops with direct access to subject matter experts (SME). Direct access to the SME allows responses to engineering challenges beyond the in-theater capability to be provided without the time delays and costs associated with deploying the SME to the theater. The purpose of this report is to describe ... |
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| Distributed Information Systems for Maintenance and Safety |
Jul-2004 |
46 pages |
| Authors:
S A Murray; SPACE AND NAVAL WARFARE SYSTEMS COMMAND SAN DIEGO CA
|
| A test and evaluation (effort or study) was conducted under the Tech Solution program of the Office of Naval Research to determine the feasibility and effectiveness of wireless wearable computing systems for support of aviation maintenance technicians. The body-worn information systems included electronic technical manual support, a virtual (i.e., software-emulated) test equipment suite, wireless voice communications, and Naval Aviation Logistics Command Management (NALCOMIS) database connectivity, coordinated over a wireless local-area ... |
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| Setup and Troubleshooting Procedures for the Klein 5500 Sidescan Sonar |
NOV 2003 |
|
| Authors:
Colin Andrew; Amy Young; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION SALISBURY (AUSTRALIA) SYSTEMS SCIENCES LAB
|
| This document outlines in detail all facets associated with the set up and usage of the Klein 5500 sidescan sonar. In particular this document outlines: (1) the different types of hardware that are required, how they need to be set up and networked, (2) how to set up and use the acquisition software packages Isis and SonarPro, and (3) how to detect, analyse and troubleshoot incorrect set up and malfunctions ... |
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| Occupational Survey Report. Visual Imagery and Intrusion Detection Systems, AFSC 2E1X4 |
NOV 2003 |
88 pages |
| Authors:
AIR FORCE OCCUPATIONAL MEASUREMENT SQUADRON RANDOLPH AFB TX
|
| This report presents the results of an Air Force Occupational Survey of the Visual Imagery and Intrusion Detection Systems career ladder (AFSC 2E1X4) . Authority for conducting an occupational survey is contained in AFI 36-2623. Copies of this report and pertinent computer printouts are distributed to the Air Force Career Field Manager, technical training school, all major using commands, and other interested operations and training officials. |
|
| Occupational Survey Report. Aircraft Electrical And Environmental Systems, AFSC 2A6X6 |
OCT 2003 |
77 pages |
| Authors:
Scott Vap; Bryan Pickett; AIR FORCE OCCUPATIONAL MEASUREMENT SQUADRON RANDOLPH AFB TX
|
| This report presents the results of an Air Force Occupational Survey of the Aircraft Electrical and Environmental Systems career ladder (AFSC 2A6X6). Authority for conducting an occupational survey is contained in AFI 36-2623. Copies of this report and pertinent computer printouts are distributed to the Air Force Career Field Manager, technical training school, all major using commands, and other interested operations and training officials. |
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| Telechemistry, Projecting Laboratory Expertise to a Deployed TAML |
OCT 2003 |
18 pages |
| Authors:
Harry F. Slife; Matthew Schofield; ARMY MEDICAL RESEARCH INST OF CHEMICAL DEFENSE ABERDEEN PROVING GROUND MD
|
| The 520th Theater Army Medical Laboratory (TAML) is a unique Army asset with worldwide responsibility to deploy on short notice and conduct health surveillance as part of a comprehensive Force Health Protection Program. The TAML is staffed by permanent party enlisted and officers and augmented with Professional Filler System (PROFIS) officers upon deployment. The staff is required to set up, operate, maintain, and troubleshoot sophisticated, delicate, analytical equipment in a ... |
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| Maintenance Mentor |
SEP 2003 |
220 pages |
| Authors:
John T. Jacobs; Randall Whitaker; Dave Byler; David A. Lemery; Brian E. Tidball; NORTHROP GRUMMAN INFORMATION TECHNOLOGY FAIRBORN OH
|
| Maintenance Mentor (MXM) is a research effort conducted by a joint AFRL/HESR and Northrop Grumman Information Technology team to identify the basic, high-level requirements necessary for improving flight line diagnostic capabilities. The effort was initially focused on identifying specific informational and visual requirements and needs of the maintainer for a specific avionics diagnostics task on a specific aircraft. Soon after its start, however, redirection of the project began to move ... |
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| Visual Execution Analysis for Multiagent Systems |
AUG 2002 |
|
| Authors:
Chong Kyung Kil; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Multiagent systems have become increasingly important in developing complex software systems. Multiagent systems introduce collective intelligence and provide benefits such as flexibility, scalability, decentralization, and increased reliability. A software agent is a high-level software abstraction that is capable of performing given tasks in an environment without human intervention. Although multiagent systems provide a convenient and powerful way to organize complex software systems, developing such system is very complicated. To help ... |
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| Upgrading Engine Test Cells for Improved Troubleshooting and Diagnostics |
2002 |
|
| Authors:
Michael J. Roemer; Rolf F. Orsagh; Michael Schoeller; James Scheid; Richard Friend; IMPACT TECHNOLOGIES LLC ROCHESTER NY
|
| Upgrading military engine test cells with advanced diagnostic and troubleshooting capabilities will play a critical role in increasing aircraft availability and test cell effectiveness while simultaneously reducing engine opening and maintenance costs. Sophisticated performance and mechanical anomaly detection and fault classification algorithms utilizing thermodynamic, statistical, and empirical engine models are now being implmented as part of a United States Air Force Advanced Test Cell Upgrade Initiative. Under this program, a ... |
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| Assessing Problem Solving Skills in Understanding and Troubleshooting AC Circuits |
31 DEC 2001 |
40 pages |
| Authors:
Gautam Biswas; Daniel Schwartz; Bharat Bhuva; John Bransford; Daniel Holton; VANDERBILT UNIV NASHVILLE TN DIV OF SPONSORED RESEARCH
|
| Assessing Student understanding of Concepts in Electricity to inform instructional decisions. We have been investigating students' knowledge and understanding of basic concepts in electricity and their application to solving electrical circuit problems. |
|
| Mentor: Dialog Agent System for Mentoring and Conversational Role- Playing |
AUG 2001 |
50 pages |
| Authors:
William R. Murray; Michelle Sams; William H. DeSmedt; Donald Loritz; MICRO ANALYSIS AND DESIGN BOULDER CO
|
| The goal of this SBIR program was to provide authorable, dialog- enabled agents for tutoring and performance support systems. Users interact with agents who carry out strategies and goals and can engage in mixed-initiative dialog via a natural language understanding and generation system. Non- programmers can author new domains and scenarios and create new dialog agents. The dialog system is authorable by non-computational linguists. The system has two types of ... |
|
| Mathematica Templates for Sequential Reliability/Maintainability Test Design and Analysis |
JUN 2001 |
232 pages |
| Authors:
Michael Cushing; ARMY MATERIEL SYSTEMS ANALYSIS ACTIVITYABERDEEN PROVING GROUND MD
|
| This report documents the recent design and/or analysis of sequential reliability test plans for three systems. Also included in this report is a new, simulation-based method for designing a hypergeometric test plan for acceptance of maintenance troubleshooting procedures based on sequential sampling. The design and analysis of sequential test plans is computationally challenging thus implementation in software is essential. For this reason, each chapter and appendix of this report was ... |
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| Troubleshooting Vibration Problems. A Compilation of Case Histories |
05 APR 2001 |
16 pages |
| Authors:
Nelson L. Baxter; ABM TECHNICAL SERVICES INC PLAINFIELD IN
|
| Vibration analysis can be utilized in the solving both rotating and non- rotating equipment problems. This paper presents several case histories where vibration analysis was utilized to troubleshoot a wide range of problems. |
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| TED On-Board: The U.S. Army's New Diagnostic Enabler |
SEP 2000 |
23 pages |
| Authors:
Holly Ingham; Richard Helfman; Edmund Baur; John Dumer; Timothy Hanratty; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD ADVANCED COMPUTATIONAL AND INFORMATION SCIENCES DIRECTORATE
|
| The U.S. Army is improving its logistic information systems so that it can continue to meet the logistics needs of future combat operations. This report describes a system that will provide engine status information on the M1A1 Abrams main battle tanks to battalion and brigade logistics maintainers. The system will reside on board the tank and is called TED On-Board. TED On- Board is an ... |
|
| Analysis and Simulation of the Advanced Amphibious Assault Vehicle (AAAV) Electrical System Architecture |
JUN 2000 |
136 pages |
| Authors:
Gabriel Beltran; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Advanced Amphibious Assault Vehicle (AAAV) is a high water speed amphibious armored personnel carrier that will replace the current family of Marine Corps amphibious assault vehicles. The AAAV is currently in Phase I of the DOD Acquisition Process. During this phase-extensive development, testing is being conducted and prototypes are being constructed. Ongoing tests of the current electrical system architecture are revealing problems and issues that ... |
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| Maintainability of Digital Systems: Technical Basis and Human Factors Review Guidance |
01-Mar-2000 |
128 pages |
| Authors:
W F Stubler; J C Higgins; J Kramer; BROOKHAVEN NATIONAL LAB UPTON NY
|
| There is currently a trend in nuclear power plants (NPPs) toward introducing digital technology into safety and non-safety systems. However, this equipment has characteristics different from older analog equipment and is susceptible to additional failure modes. Inadequate integration of digital systems into operating and maintenance practices, and inadequate understanding of the intricacies of software-based digital systems on the part of technicians and operators, can result in failures that render systems ... |
|
| Process Control Document for the SSC SAN Diego Product Quality Engineering Group |
MAR 2000 |
138 pages |
| Authors:
R. P. Stone; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| This Process Control Document provides guidance within the SSC San Diego Product Quality Engineering (PQE) Group, and for outside groups, agencies, and developers, on the high-level processes that will be used by the PQE Group and all its team members. This creates an initial framework for starting a "repeatable level of statistical control by initiating rigorous project management". This document is not a testing handbook, but ... |
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| Design of Advanced Analysis Software for IT-21 Compliant Networks |
DEC 1999 |
63 pages |
| Authors:
David R. Demille; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The cornerstone to achieving battlefield dominance, as defined by Joint Vision 2010, is establishing and maintaining information superiority. This new paradigm of network centric warfare has shifted computer networking from an administrative support system to a tactical necessity. Recognizing this critical requirement for inter operable networking, the Department of the Navy promulgated the Information Technology for the Twenty-First Century (IT-2l) computing standards. This thesis investigates ... |
|
| Emergency Airfield Lighting System (EALS) - Air Force Handbook 10-222, Volume 7 |
01 SEP 1999 |
106 pages |
| Authors:
SECRETARY OF THE AIR FORCE WASHINGTON DC
|
| This handbook summarizes the key steps for installing, troubleshooting and repacking the Emergency Airfield Lighting System (EALS). It contains checklists that serve as memory joggers for civil engineer electrical and power production technicians. It augments but does not replace TO 35F5-3-17- 1, Lighting System, Airfield, Emergency A/E82U-2. Anyone using this handbook should have hands-on experience with the EALS and have read the applicable technical orders. |
|
| Aviation Turbine Engine Diagnostic System (ATEDS) for the OH-58D helicopter |
JUL 1999 |
363 pages |
| Authors:
Larry R. DeMott; ALLISON ENGINE CO INDIANAPOLIS IN
|
| The U.S. Army has documented the need for improved equipment and procedures to provide electronic troubleshooting/diagnostics of helicopter turbine engines. The Aviation Turbine Engine Diagnostic System (ATEDS) development has been initiated to address this need. A key element of the system development requires the creation of detailed, step-by-step, troubleshooting/ diagnostic procedures and conversion of this data to electronic format compatible with the overall system. This report documents the activity accomplished ... |
|
| Guide To Reverse Osmosis Water Purification Unit Installation And Operation - Air Force Handbook 10-222, Volume 9 |
01 MAY 1999 |
100 pages |
| Authors:
SECRETARY OF THE AIR FORCE WASHINGTON DC
|
| This handbook is designed to assist you in setting up and operating the reverse osmosis water purification unit (ROWPU). It discusses site selection and layout; major components associated with the unit; set up. operation and shutdown procedures and the more critical maintenance activities needed to keep the unit functional. When coupled with information contained in Technical Order 40W4-13-41. AFPAM l0-%l9 Vol. 5. Bare Base Conceptual Planning Guide; AFH l()- 222 ... |
|
| Maintainability Survey for the High Mobility Multipurpose Wheeled Vehicle (HMMWV) |
MAY 1999 |
92 pages |
| Authors:
Ralph C. Akens; Richard S. Bruno; Joyce M. Johnson; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| Maintenance operations influence vehicle effectiveness during the full range of required missions. These operations are essential to ensure that the vehicle systems are mission ready and coincide with the needs of the soldier. In order to identify maintainability-related shortfalls for the high mobility multipurpose wheeled vehicle, a survey was conducted of 89 field site maintenance personnel. The primary problems identified during this survey were troubleshooting preferences, the need for improved ... |
|
| The JADS Analysis Toolbox. A Tool for Analysis of Distributed Simulations |
19 MAR 1999 |
11 pages |
| Authors:
Dean G. Gonzalez; Jerry Black; SCIENCE APPLICATIONS INTERNATIONAL CORPALBUQUERQUE NM
|
| Science Applications International Corporation (SAIC) has developed a software product for the Joint Advanced Distributed Simulation (JADS) called the JADS Analysis Toolbox that has been very helpful in the troubleshooting, analysis, and visualization of distributed interactive simulation (DIS) data. The toolbox comprises a set of C++ routines integrated into a single user interface. It allows users to view tabulations and plots of protocol data unit (PDU) ... |
|
| Preliminary Recommendation for the Electronic Display of Graphical Aircraft Maintenance Information |
FEB 1999 |
19 pages |
| Authors:
Laurie Quill; David Kancler; Patrick Pohle; Barbara L. Masquelier; DAYTON UNIV OH RESEARCH INST
|
| The conversion of paper schematic diagrams to electronic display presentations requires identification and analysis of associated cognitive demands. Schematic diagrams are typically used by expert maintainers in troubleshooting aircraft faults. These expert maintainers must rely on skill, rule, and knowledge-based behavior to successfully use these diagrams. In this task, the Applied Cognitive Task Analysis (ACTA) method was employed to elicit knowledge associated with using ... |
|
| System Level Aid for Troubleshooting (SLAT) |
22 SEP 1998 |
|
| Authors:
Thomas Laureanno; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| This invention relates generally to a method and apparatus for isolating and analyzing faults in a complex system which is represented by a network comprising a plurality of nodes interconnected by links defining the flow among nodes corresponding to flows in the complex system. The complex system is stored as a database internal to the apparatus and represents a physical system under test. The apparatus localizes faults in the system ... |
|
| NTC Scorpions': SAWE/MILES II, (Simulated Area Weapons Effects/Multiple- Integrated Laser Engagement System II) |
25 MAR 1998 |
94 pages |
| Authors:
ARMY TRAINING AND DOCTRINE COMMAND FORTMONROE VA
|
| MILES clearly rules the battlefield at the National Training Center. If units are proficient with MILES gunnery, they stand a superb chance of defeating the OPFOR. To assist units with their training, the Scorpion Mechanized Infantry Task Force Trainers at the NTC have developed this Simulated Area Weapons Effects (SAWE)/Multiple-Integrated Laser Engagement System (MILES) II Handbook to assist all units on how to train with the MILES. This document covers ... |
|
| Behavioral and Cognitive Task Analysis Integration For Assessing Individual and Team Work Activities |
1998 |
8 pages |
| Authors:
Teresa Brenner; Kathleen Sheehan; Winfred Arthur Jr.; Winston Bennett Jr; NAVY ADVANCEMENT CENTER PENSACOLA FL
|
| Traditionally, the same type of task analysis procedures has been used for all types of jobs. Recent changes in the workplace include the increased focus on the cognitive demands of tasks and the increased use of work teams to accomplish these tasks. Researchers have discussed the implications of these trends for task analysis procedures in organizations today. Cascio (1995) noted an organizational change away from task-based work to more of ... |
|
| Maintenance of HP 5071A Primary Frequency Standards at USNO |
Dec-1997 |
12 pages |
| Authors:
H Chadsey; A Kubik; NAVAL OBSERVATORY WASHINGTON DC TIME SERVICE DIV
|
| The US. Naval Observatory (USNO) has been operating Hewlett-Packard model 5071A cesium-beam frequency standards for over five years. During that period, there have been a variety of failures and these devices have shown frequency and phase changes. The HP 5071A model primary frequency standard offers a very useful troubleshooting tool by outputting the status of 22 different operating parameters. This paper will present an explanation of the parameters and show ... |
|
| Analysis of Aircraft Sortie Generation with Concurrent Maintenance and General Service Times |
FEB 97 |
86 pages |
| Authors:
Daniel V. Hackman; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| The primary objective of this study was to develop an analytical methodology for evaluating an aircraft sortie generation process. The process is modeled as a closed network of general service queues with a fork join node to model concurrent servicing. The model uses the Mean Value Analysis (MVA) algorithm and general queueing network analysis by decomposition to approximate network performance measures including resource utilization and the overall sortie generation rate. ... |
|
| Technical Test Plan for Aircraft 85-0085 Intermittent Power Failure Anomaly Flight |
09 JAN 97 |
63 pages |
| Authors:
Jon C. Bradford; OKLAHOMA CITY AIR LOGISTICS CENTER TINKER AFB OK
|
| B-1B aircraft 85-0085 arrived 29 Jul 96 for PDM. Aircraft experienced intermittent electrical failures during Functional Check Flight (FCF) on 27 Nov 96. Troubleshot defect and conducted Operational Check Flight (OCF) on 7 Dec 96. Intermittent failure reoccurred during flight. Extensive troubleshooting identified several defective electrical power components which feasibly could have caused the in-flight failure. These components were removed and replaced. Detailed troubleshooting background is included. An OCF is ... |
|
| A Bayesian Classifier Based on a Deterministic Annealing Neural Network for Aircraft Fault Classification |
JAN 97 |
15 pages |
| Authors:
Jun Wang; Shing P. Chu; ARMSTRONG LAB WRIGHT-PATTERSON AFB OH HUMAN RESOURCES DIRECTORATE
|
| A Bayesian classifier based on a recurrent neural network was developed for aircraft fault classification. From historical maintenance data the posterior probabilities of fault classification based on given fault indicators are estimated and derived using the Bayes' rule. Based on Bayesian decision theory, the fault classification problem is formulated as a linear integer programming problem to minimize an expected loss function using the posterior probabilities. The linear integer programming problem ... |
|
| Implementation Issues for the Initial Deployment of the Performance and Calibration Modules of the MK 92 MOD 2 Fire Control System Maintenance Advisor Expert System |
DEC 96 |
138 pages |
| Authors:
Robert J. Cepek; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The MK 92 Mod 2 Fire Control System (FCS) is a complex, maintenance intensive shipboard weapon system found primarily aboard the Oliver Hazard Perry class guided missile frigates (FFG-7). This system, based on 1970's technology, frequently requires extensive troubleshooting and supplemental support from shore-based technical experts. A maintenance advisor expert system (MAES) is being developed by the Port Hueneme Division of the Naval Surface Warfare Center (NSWC-PHD) and the Naval ... |
|
| Turbine Engine Diagnostics (TED) for Army Tank Applications |
DEC 96 |
61 pages |
| Authors:
Mark J. Pincoski; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL ENGINEERING
|
| Turbine engine diagnostics have been vastly improved with the use of Artificial Intelligence (AI) techniques such as expert systems artificial neural networks and fuzzy logic. A typical system that is using artificial intelligence to improve its diagnostic capabilities is the Army's Turbine Engine Diagnostic (TED) program for the Ml Abram's AGT-1500 turbine engine. TED is a diagnostic expert system that assists the Ml Abrams mechanic. The system provides assistance during ... |
|
| Standard HVAC Control Systems: Operation and Maintenance for Maintenance Mechanics |
JUL 96 |
172 pages |
| Authors:
David M. Schwenk; Glen A. Chamberlin; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| The U.S. Army Corps of Engineers has published documents that describe and define design requirements and specifications for Corps-standard heating, ventilating, and air-conditioning (HVAC) control systems and hardware. However, those documents are too large and complex to be field-usable for operations and maintenance (O&M) training and reference purposes. In-lab investigations by the U.S. Army Construction Engineering Research Laboratories (USACERL) and extensive field experience with Corps-standard HVAC control systems (including control ... |
|
| Expert Systems Development Utilizing Heuristic Methods |
JUN 96 |
83 pages |
| Authors:
John N. Lewis; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis analyzes the diagnostic domain and isolates the heuristics employed by experts to arrive at diagnostic solutions. These heuristic methods are then generalized in order to arrive at a series of heuristic rules that can be applied to a wide range of diagnostic processes independent of there respective domain. To test the validity of the generalized heuristics, a prototype expert system was created targeting the heuristics employed by avionics ... |
|
| Problem Solving and Learning in a Natural Task Domain |
MAR 96 |
184 pages |
| Authors:
Janet Kolodner; Lawrence Barsaloud; GEORGIA INST OF TECH ATLANTA COLL OF COMPUTING
|
| This report explains the details of some of the problem solving and learning processes employed by novice problem solvers as they become more expert. In particular, the researchers investigate the effects of individual problem solving and learning experiences on later problem solving in the context of troubleshooting. |
|
| Managing Situation Induced Stress in Military Units |
MAR 96 |
48 pages |
| Authors:
Orlindo G. Pereira; Jorge C. Jesuino; UNIVERSIDADE NOVA DE LISBOA (PORTUGAL)
|
| An experimental leadership under stress course for voluntary Navy 1st lieutenants took place during 2 weeks in June-July 1992, and was the final empirical test for a model course, constructed along the present project. The rationale and step-by-step approach were detailed in the previous interim report. A combination of lectures, individual and group assignments, and active teaching techniques were used in different stress loads to convey new concepts, change attitudes, ... |
|
| Generic-Role Limited Shells: Explicit Control Knowledge for Learning and Tutoring |
27 FEB 96 |
10 pages |
| Authors:
David C. Wilkins; ILLINOIS UNIV AT URBANA BOARD OF TRUSTEES
|
| The focus of our AFOSR-sponsored research is knowledge acquisition and machine learning methods for second-generation expert systems that solve analysis type problems, such as data interpretation, monitoring, diagnosis and troubleshooting. In particular, we focus on improvements in the design of expert shells that allow these shells to be used as critiquing expert systems in domains that involve uncertain and incomplete information. Critiquing abilities play a major role in systems for ... |
|
Reports by Keyword(s)
TROUBLESHOOTING
