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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

VOLUMETRIC 3D VISUALIZATION OF TEST AND EVALUATION OPERATIONS

Briggs, James R., Deis, Michael R., Geng, Jason 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Time-Space-Position-Information (TSPI) visualization systems used today at the Air Force Flight Test Center (AFFTC) and simulation visualization tools used at the Air Armament Center (AAC) utilize two-dimensional (2D) display systems for both real-time and post-mission data analysis. Examples are monitors and large screen projection systems. Some TSPI visualization systems generate three-dimensional (3D) data as output, but the 3D data is translated so that it is compatible with 2D display systems. Currently, 3D volumetric display systems are being utilized by the Federal Aviation Administration (FAA) for monitoring air traffic in 3D without 3D goggles. The aircraft’s position information is derived from radar and fed to a volumetric display. The AFFTC and AAC need a similar system for Open Air Range testing utilizing the Global Positioning System (GPS) as the source of position information and Installed Systems Testing utilizing 6 Degree of Freedom (DOF) flight simulation data as the source of position information. This system should be capable of displaying realistic terrain structures, vehicle models and physical test configurations along with text data overlays. The ability to display the mission in real-time on a volumetric 3D display makes it possible for test engineers to observe resource utilization continuously as the mission develops. Quicker turn-around times in the decision process will lead to more efficient use of limited test resources and will increase the information content of the data being collected.
12

Twenty-First Century Live Play - Recent Developments

Reid, Robert J., Callaghan, Nancy 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / The 21st Century Live Play (21CLP) program is developing a mobile, low cost, wireless networking system that supports applications to provide a number of services for military use. 21CLP is a joint Defense Advanced Research Projects Agency (DARPA) and Central Test and Evaluation Investment Program (CTEIP) project. The Naval Undersea Warfare Center, Division Newport (NUWCDIVNPT), Code 382 has been assigned as the program manager for a T&E version of the 21CLP system. The 21CLP vision is a common instrumentation function that links, in real-time, live land, air and maritime entities together with a virtual battlespace in any location where forces are deployed or being trained, weapons systems are being tested and evaluated, and ultimately where missions are being conducted. This vision will be realized with an embedded, mobile, distributed, untethered system that requires little or no site preparation.
13

DESIGN AND DEVELOPMENT OF A FIBER OPTIC TELEMETRY PACKAGE

Griffith, Jerry A., Rowan, Herman K., Huber, August J. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Guided Weapons Evaluation Facility (GWEF) at Eglin Air Force Base is the Air Force’s premiere munitions hardware-in-the-loop (HITL) simulation facility. HITL simulation testing is a ground based tool used to evaluate the performance of a weapon system at a fraction of the cost of free flight testing. The weapon system is stimulated in a laboratory setting with the electromagnetic environment and physical motion it would experience in an operational setting. The system’s responses to that environment are measured to provide various measures of performance including target tracking ability and miss distance. Electrical interfaces are required in order to control the weapon’s guidance system and to receive and inject signals from the HITL simulation computer system to the weapon under test. These interfaces are usually developed using external control circuits and copper cabling to the guidance unit. The GWEF had a requirement to develop a missile interface with no external copper wires or antennas to support a unique test configuration. The requirement led to the development of a Fiber Optic Telemetry (FOTM) package which would be contained completely within the missile body cavity. The constraints on the FOTM design were considerable. Lack of a suitable commercial off-the-shelf fiber optic telemetry package led to the eventual in house design and fabrication of the FOTM. This paper describes the requirements, design constraints and results achieved in the FOTM design. Although not classical telemetry it does share similarities with conventional telemetry units used for open air weapons testing including size constraints, data rates and thermal considerations.
14

Development of a Surface-to-Air Missile T&E Federation

Lucas, Jason L., Kent, Robert A. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper focuses on the development of the Surface-to-Air Missile Federation (SAM Fed), a Test and Evaluation (T&E) High Level Architecture (HLA) federation. The SAM Fed evolved from a legacy constructive real time/post mission hardware-in-the-loop (HITL) Surface-to-Air Missile (SAM) simulation. The process to transition from a standalone simulation to a distributed HLA federation as well as the problems experienced and lessons learned will be presented. This paper will also discuss the merit of standardizing internal federate interfaces to facilitate reuse.
15

The Generalization of the Logistic Discriminant Function Analysis and Mantel Score Test Procedures to Detection of Differential Testlet Functioning

Kinard, Mary E. 08 1900 (has links)
Two procedures for detection of differential item functioning (DIF) for polytomous items were generalized to detection of differential testlet functioning (DTLF). The methods compared were the logistic discriminant function analysis procedure for uniform and non-uniform DTLF (LDFA-U and LDFA-N), and the Mantel score test procedure. Further analysis included comparison of results of DTLF analysis using the Mantel procedure with DIF analysis of individual testlet items using the Mantel-Haenszel (MH) procedure. Over 600 chi-squares were analyzed and compared for rejection of null hypotheses. Samples of 500, 1,000, and 2,000 were drawn by gender subgroups from the NELS:88 data set, which contains demographic and test data from over 25,000 eighth graders. Three types of testlets (totalling 29) from the NELS:88 test were analyzed for DTLF. The first type, the common passage testlet, followed the conventional testlet definition: items grouped together by a common reading passage, figure, or graph. The other two types were based upon common content and common process. as outlined in the NELS test specification.
16

Hodnocení testových úloh z teorie paraglidingu pro uchazeče o pilotní licenci / Evaluation of paragliding theory test items for pilot license applicants

Šťastná, Johana January 2011 (has links)
EVALUATION OF PARAGLIDING THEORY TEST ITEMS FOR PILOT LICENSE APPLICANTS Objectives: The aim of this work is to evaluate and optimize a set of paragliding the theoretical items appropriate for testing pilot license applicants of LAA ČR. Methods: This aim is realized by means of the theory of testing. Basic methods of testing form the background research of this work. The items were de- signed as multiple-choice, to select one correct answer. These items were assigned to the applicants for pilot licenses and were evaluated by the apparatus of testing. Microsoft Excel 2003 was used for collecting data and results evaluation. The computation according to the formulas in the theoretical part was performed in Matlab 2007b. Based on this analysis, the results were presented and optimization of these items was proposed. Results: Three hypotheses were examined in this work. The first dealt with a rela- tion between evaluated difficulty of test items and their points value, which was assigned by the LAA ČR. The second hypothesis concerned the number of used distractors. The third hypothesis was focused on the sensitivity of the items. The evaluated difficulty of test items matched items point value in 26 % of the number of items. 92 % of the alterna- tives were used and sufficient sensitivity had 78 % of...
17

Applying Instrumentation & Telemetering Technologies from the DoD Test & Evaluation Arena to Commercial Law Enforcement Applications

Scardello, Michael A., Gretlein, Raymond, Comperini, Robert G., Moore, Archie 10 1900 (has links)
ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California / The Law Enforcement Aerial Platform System (LEAPS), designed and integrated by Spiral Technology, Inc., was architected to marry airborne sensors and ground-based instrumentation in support of and to augment the Law Enforcement and/or Disaster Response and Recovery agencies of counties and municipalities. The mission of LEAPS is to provide an affordable reliable manned or unmanned aerial surveillance system that readily integrates with existing Law Enforcement's and Local Government's infrastructures. The initial sensors being integrated into the LEAPS concept include both Visible Spectrum and Infrared Imager. Salient requirements for LEAPS include: Ground Control of Airborne Sensors; Sensor Data captured and archived on the ground with time-tag and geographic location data; and Controlled Custody and Preservation of Sensor Data as Evidentiary Material This paper describes the LEAPS System Development Effort.
18

Test Process Evaluation by Combining ODC and Test Technique Effectiveness

Bengtsson, Dan January 2001 (has links)
This report discusses the importance of test process evaluation in order to improve a test model and to provide developer- and management feedback. The report results in a test evaluation framework, developed in cooperation with a department at Ericsson Software Technology in Karlsrona. The framework is a result of discussions with the developers regarding performed testing, studying defect types from past projects and by analyzing the result from a small survey answered by some of the developers at Ericsson. The overall project aim was to evaluate performed testing in order to improve the test model. This requires a good insight of the test process, which is provided by the developed test evaluation framework. The test process is visualized by extracting test process data, making it possible to achieve the project aim. The project aim can be divided into the three following areas: Firstly to evaluate if the current test model is followed as expected, for example are all test techniques used according to the test model? Secondly to evaluate how well the test model fulfills predefined expectations, i.e. is a defect detected with the expected test technique and in the expected test phase? Finally to evaluate if there are any problematic defects that should receive extra attention during a project such as if one or several defect types occurs more frequently than others? The framework is based on another framework, Orthogonal Defect Classification [Chillarege92], combined with the research area Test Technique Effectiveness. The aim of this combination was to support the developed framework. Further a specific part of the framework is focusing on developer- and management feedback. / Dan Bengtsson Västra Stationstorget 7 222 37 Lund
19

The utility of the Revised Nonreading Aptitude Test Battery vs. the General Aptitude Test Battery

Barber, Robert M. 16 September 2005 (has links)
The study focused on the aptitude test performances of intellectually sub-normal subjects on the Nonreading Aptitude Test Battery (R-NATB) vs. the General Aptitude Test Battery (GATB). There were two research questions investigated: (1) Are there performance differences on the RNATB vs. GATB of borderline and/or mildly retarded individuals?, and (2) Is the Wide Range Achievement Test-Revised (WRAT-R) a better predictor than the Wide Range Scale (WRS) of R-NATB and/or GATB aptitude performances in borderline and/or mildly retarded individuals? Two groups were selected for the study - 80 borderline and 80 mildly retarded subjects, ages 15-25 years. Each group contained 40 subjects with high reading skills and 40 with low reading skills as determined by the WRS. The order of aptitude test administration was also controlled. The research data collection began in November 1984 and was completed in October 1987. The following were the major findings for borderline and mildly retarded subjects. ages 15-25: (1) individuals with higher reading skills performed significantly higher on the General Intelligence (G), Verbal (V), and Numerical (N) aptitudes on the GATB and R-NATB than those with lower reading skills; (2) generally, the GATB and R-NATB did not meet the established criteria for tests known to have acceptable levels of convergent and discriminant validity; (3) subjects performed higher on the General Intelligence (G), Verbal (V), and Numerical (N) aptitudes when taking the GATB in comparison to the R-NATB; (4) subjects performed higher on the Spatial (S), Form Perception (P), and Clerical Perception (Q) when taking the R-NATB in comparison to the GATB; and (5) neither the Wide Range Scale nor the Wide Range Achievement Test-Revised proved to be effective predictors of higher GATB vs. R-NATB aptitude performances in intellectually subnormal individuals. If the GATB or R-NATB must be taken, borderline and mildly retarded individuals would optimize their aptitude test performances if they would take the B-1001 form of the GATB so they could mark their answers in the test booklet instead of on an answer sheet. Furthermore, the WRS and WRAT-R are not adequate screeners for predicting optimal aptitude performances / Ed. D.
20

Simulator test and evaluation of a drowsy driver detection system and revisions to drowsiness detection algorithms

Lewin, Mark Gustav 22 August 2008 (has links)
This study was undertaken to simulator test and evaluate a complete drowsy driver detection system. The goal of the study was to recommend optimal specifications for a system to be further studied in an actual vehicle. The system used a set of algorithms developed from previously collected data and a set of previously optimized advisory tones, advisory messages, alarm stimuli, and drowsiness countermeasures. Detection occurred if eye closure or lane excursion exceeded predetermined thresholds. Data were obtained from six sleep-deprived subjects who drove a motion base automobile simulator late at night. Each subject was trained in carefully observing lane boundaries, using a device which sounded an alarm if lane boundaries were exceeded. The performance aspect of the system dominated the detection process. None of the algorithms tracked well with the measures they were designed to estimate; correlations were much lower than expected. The algorithms relied heavily on the positioning of the vehicle relative to the lane. / Master of Science

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