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GEORGIA INST OF TECH ATLANTA

Overview
Works: 313 works in 344 publications in 1 language and 556 library holdings
Genres: Conference papers and proceedings  Academic theses 
Classifications: QE40,
Publication Timeline
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Publications about GEORGIA INST OF TECH ATLANTA
Publications by GEORGIA INST OF TECH ATLANTA
Most widely held works by GEORGIA INST OF TECH ATLANTA
Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors ( Book )
7 editions published between 1971 and 1978 in English and held by 7 libraries worldwide
Several projects were pursued during the past nine months of this report period. The following projects were completed: (1) Diethyl ester soluble aluminum hydride, (2) Preparation of the first stable complex metal hydride of copper, LiCuH2, (3) Redistribution of aluminum hydride with groups I and II a and b metal halides; (4) Attempted desolvation of ether soluble aluminum hydride; Reactions of MZnx(CH3)2xH compounds with aluminum hydride
Proceedings of the Conference on the Changing Identity of Graduate Earth Science Education, Jan. 25-26, 1965, Atlanta, Georgia by Charles E Weaver( Book )
1 edition published in 1965 in English and held by 2 libraries worldwide
Discussed are the changing identity of graduate earth science education, the factors which precipitated these changes, and the resulting problems. The conference participants included earth scientists with diverse scientific backgrounds from a broad geographical area. Specific topics covered included--(1) present developments and future of earth science research, (2) geology today, its needs, and the types of departments that may fulfill those needs, (3) survival of geology, meteorology, oceanology--departments within a university structure, (4) building a graduate department with complete freedom of choice and funds, (5) the geological exploration of the moon, (6) the problem of professional development, (7) the possible dovetailing of "classical" and "modern" geology, (8) organizing a modern graduate program, (9) renovating a "classical" department, (10) interdisciplinary programs, (11) changes in geophysics education, and (12) the small college and graduate education. An annotated bibliography is included. (Rs)
Performance Analysis of Hybrid ARQ Protocols in a Slotted Code Division Multiple-Access Network by Joseph M Hanratty( Book )
1 edition published in 1989 in English and held by 2 libraries worldwide
A link throughput-delay analysis is presented for a slotted direct-sequence spread-spectrum multiple-access packet radio network (PRN) operating in the presence of background noise, multiple-access interference, and pulsed jammer noise. The PRN is comprised of an arbitrary number of full-duplex radio units arranged in a paired-off topology. Slotted ALOHA random access is used in conjunction with CDMA for channel access and a type I hybrid ARQ is used for error control. Expression are derived for the link throughput-delay in terms of the channel cutoff rate and capacity. With the friendly objective of maximizing the link throughput, and the enemy objective of minimizing the link throughput, the dependency of the optimal retransmission probability, processing gain, code rate, and jamming fraction on the population size, traffic intensity, bit energy-to-background-noise ratio, is examined in detail. It is shown that properly designed (optimized) PRN using random-access CDMA offers a significantly larger heavy load throughput than a random-access PRN. Theses. (RH)
Analysis of Knowledge-Based Expert Systems as Tools for Construction Design ( file )
1 edition published in 1991 in English and held by 2 libraries worldwide
Because construction costs are continuously rising, Congress mandated that those within the respective branches of military service who are responsible for planning and executing construction programs develop policies and procedures that ensure that the individual projects are designed, bid, and constructed as rapidly as possible. This requires an approach that demands maximum efficiency from the design process. Reviews are necessary to ensure that designs meet all requirements, but the reviews themselves must be conducted in the least amount of time so as to preclude delays. Design tools that increases efficiency are knowledge-based expert systems which are interactive computer programs that incorporate judgement, experience, rules of thumb, and other expertise, so as to provide knowledgeable advice about a specific domain. They mimic the thought process employed by a human expert in solving a problem
The Role of Self-Esteem and Self-Efficacy in Detecting Responses to Feedback ( Book )
2 editions published in 1998 in English and held by 1 library worldwide
Our research on the relationships between individual differences, feedback seeking, and reactions to feedback sought to identify and clarify the existing state of knowledge concerning these relationships. We identified five individual difference variables that have historically been included in empirical feedback studies. These are: self-esteem, self-efficacy, locus of control, achievement need, and tolerance for ambiguity. Within the identified research, feedback-related responses were classified into five categories: affective reactions to feedback (e.g., satisfaction with the feedback), cognitive reactions to feedback (e.g., perceived accuracy), feedback monitoring (i.e., using indirect methods such as observing others to gain some performance information), feedback seeking (i.e., asking others for feedback), and other behaviors (often including performance following the receipt of feedback). The results of this investigation are summarized in Appendices A through E. In each appendix, the relationship between an individual difference and the responses given above are outlined. More specifically, the results for self-esteem are contained in Appendix A, for self-efficacy in Appendix B, for locus of control in appendix C, for tolerance for ambiguity in Appendix D, and need for achievement in Appendix E
Integrated Automatic Target Detection from Pixel-Registered Visual-Thermal-Range Images ( Book )
2 editions published in 1998 in English and held by 1 library worldwide
This paper outlines a method to automatically detect targets from sets of pixel registered visual, thermal, and range images. The method uses operations specifically designed for the different kinds of images. It also introduces the morphological operation called erosion of strength n as a powerful tool for removal of spurious information. Good preliminary results obtained for detection support its suitability for application to the Automatic Target Recognition (ATR) problem
Measurement of Lung Vibration from Low Frequency Underwater Sound in an Animal Model and Divers Using NIVAMS ( Book )
3 editions published between 1998 and 1999 in English and held by 1 library worldwide
This report contains a description of an investigation of the physiological effects of underwater low frequency sound. The work described includes the design, fabrication, and testing of a travelling wave tube for the controlled insonification of small animals under representative conditions. It also contains a description of an experiment conducted on divers in a hyperbaric chamber to determine the frequency response of the human lung and the effects of depth on this frequency response
ARL Intranet Analysis and Development Study by Dana L Ulery( Book )
2 editions published in 1999 in English and held by 1 library worldwide
We analyze the concept and practice of Intranets used in midsize and large enterprises, focusing on their use and impact within research and development (R & D) organizations. We examine the shift from the old concept of business computing to the modern concept of enterprise computing, and consider Intranets-a class of enterprise computing-relative to enterprise computing trends. By analyzing in detail some case studies selected from the literature, on-site visits, and workshop discussions, we then offer three tools to frame the critical issues and provide structure for systematically constructing strategic Intranets specific to a given organization's mission and culture. Arguing that creation of an Intranet that projects an image of a world-class organization demands no less than a world-class enterprise that is strategically enabled through information technology, we then analyze the current U.S. Army Research Laboratory (ARL) Intranet and present a three-step action plan to expedite ARL's movement toward creation of such an Intranet
Augmentation Awards for Science and Engineering Training (AASERT) ( Book )
2 editions published in 1999 in English and held by 1 library worldwide
This report documents in summary format the research performed under the AASERT grant N00014-96-1-1018. The AASERT parent grant is the ONR contract for the Conformal Acoustic Velocity Sonar (CAVES). Three graduate students were supported by this grant and they performed research in nearfield array measurements and Laser Doppler Vibrometry (LDV) in the presence of a large acoustic excitation
Individual Feedback Propensities and Their Effects on Motivation, Training Success, and Performance by David M Herold( Book )
2 editions published in 1997 in English and held by 1 library worldwide
This research project had as its goal the development, validation, and field testing of new measures of individual differences that assess people's propensities to seek, generate, or interpret performance feedback information in a particular way. Specifically, based on preliminary work, it was thought that internal and external propensities exist that make individuals more or less likely to prefer, rely on, seek, or attend to primarily internally or externally generated performance cues. These propensities, if identified and measured, would be related to skill acquisition, performance improvement, self regulatory processes, performance maintenance, as well as a variety of affective and cognitive responses to performance settings based on the interaction of the performer's feedback predispositions and the characteristics of the feedback available. In summary, this study proposed to help one better understand the role of dispositions in explaining how different individuals go about shaping their feedback environment, processing feedback information, and responding to such information. The driving belief behind this line of research has been that individuals differ in ways that are specific to their orientation toward performance feedback situations, and that such differences, if identified and appropriately measured, would be valuable in better understanding the links between feedback and performance as well as other outcomes of interest
User Interfaces for Cooperative Remote Design ( Book )
3 editions published between 1997 and 1998 in English and held by 1 library worldwide
Our objective in this research is to allow teams that are physically separated to do detailed design work on large-scale, 3D projects. The specific task is to enable multiple users to stand at each of two (or more) Virtual Workbenches at remote locations and interact effectively for design generation. Specific tasks completed include: (1) Organized and segmented the new Navy Arsenal Ship model; (2) Developed off-axis stereoscopic display and basic tracking mechanisms; (3) Developed an object data organization; (4) Generated nearly 1,000 3D objects and classified them using the data organization format; (5) Worked on several interaction paradigms, many of which are implemented in the design environment; (6) Developed a networking structure; and (7) Put together and are demonstrating a prototype design environment. In the coming year we will further study issues of collaboration and will also continue our work in enlarging and managing the set of objects in the ship design
Final Report Summer Intern Program ( Book )
2 editions published in 1998 in English and held by 1 library worldwide
This report summarizes the summer internship program conducted in 1996, supported by an ONR grant (N00014-92-J-1828, Georgia Tech budget C36-542). The report describes the work undertaken by the students, results of the program, and future plans. Overall, the internship program was a complete success. The goal of the internship program was to give socioeconomically disadvantaged undergraduate students an introduction to what graduate study in Computer Science is like and to encourage them to consider graduate education. A further goal was to build stronger relationships with local and national four year HBCUs (Historically Black Colleges and Universities). We also recruited students from HBCUs nationwide and worked in conjunction with the School of Electrical and Computer Engineering, which has a similar intern program, funded by the National Science Foundation. We worked very closely with local HBCU faculty to provide an internship program that was rewarding, challenging, enjoyable, and closely mentored
Integrated Diagnostics ( Book )
3 editions published between 1997 and 1999 in English and held by 1 library worldwide
This document summarizes activity concerning the performance of basic research being conducted in the area of Integrated Diagnostics, a term associated with the technologies and methodologies used to determine how mechanical failures occur, and how they can be detected, predicted, and diagnosed in real time. Objectives, set forth through a Department of Defense Multidisciplinary Research Program of the University Research Initiative (M-URI), are being addressed by faculty and staff from the Georgia Institute of Technology, Northwestern University, and the University of Minnesota. Fourth year accomplishments and plans are reported upon. During this reporting period, experiments based on material, load, and vibration information from critical rotorcraft components continued so as to collect data of relevance in understanding the mechanisms of small crack growth for use in developing fatigue failure models. Such models serve as a guide in the selection and development of sensors to detect faults and pending failures. Effort has been placed on sensor development, and achieving the means to analyze and correlate reliable sensor output for operator use. Organizationally, this activity is being accomplished through (11) projects, categorized by the thrust areas of (1) Mechanical System Health Monitoring, including microsensor development and the condition monitoring of rotordynamic elements; (2) Nondestructive Examination Technology; and (3) Material Failure Characterization and Prediction Methodology
F-15 Tail Buffet Alleviation: A Smart Structure Approach ( Book )
2 editions published in 1998 in English and held by 1 library worldwide
In high performance twin-tail aircraft fighter aircraft (HPTTA), tail buffet was first noticed through its destructive effects of induced fatigue cracks in the F-15 aircraft. The fatigue cracks were noticed shortly (less than six months) after the F-15 was placed in service and many high angles of attack maneuvers were executed. After repeated temporary structural fixes, a thorough investigation of the conditions leading to the crack confirmed that tail buffet is the cause of these effects. There are two significant effects of the buffet induced tail vibrations. These vibrations can restrict the flight maneuvering capability by restricting the angles of attack and speeds at which maneuvers such as the wind-up and wind-down turns can be executed. The second effect is caused by fatigue cracks and the resulting corrosion due to moisture absorption through the cracks. The objective of this work is to describe the results of our work in the area of buffet alleviation by the use of piezoceramic stack actuator assemblies
Graph minors structure theory & algorithms by Roy Thomas( file )
3 editions published between 1993 and 1996 in English and held by 0 libraries worldwide
This report summarizes work performed under this contract. The main topics are : Hadwiger's conjecture, rooted subdivisions of K4, results of PI's student D.P. Sanders, representativity of surface unbeddings, the Four Color Theorem, Younger's conjecture
Applications of Multiconductor Transmission Line Theory to the Prediction of Cable Coupling. Volume 6. A Digital Computer Program for Determining Terminal Currents Induced in a Multiconductor Transmission Line by an Incident Electromagnetic Field ( file )
1 edition published in 1978 in English and held by 0 libraries worldwide
The report describes a digital computer program which is designed to compute the terminal currents induced in a multiconductor transmission line by an incident electromagnetic field. Sinusoidal steady state behavior of the line is assumed. The transmission line is uniform and consists of n wires and a reference conductor immersed in a homogeneous, lossless, linear, isotropic medium. The n wires and the reference conductor are assumed to be lossless. The reference conductor may be a wire, an infinite ground plane or an overall, cylindrical shield. The incident electromagnetic field may be a uniform plane wave or a general nonuniform field. The primary restriction on the program validity is that the cross sectional dimensions of the line, e.g., wire separation, must be much less than a wavelength
Information-Based Multisensor Detecton ( file )
2 editions published between 2000 and 2001 in English and held by 0 libraries worldwide
This program addresses the Navy need for extended firm track range for low altitude cruise missiles through the integration of multiple sensors. Track-Before-Declare (TBD) techniques that utilize signal features are proposed for the synergistic integration of an Electronically Scanned Array (ESA) radar with other sensors for the detection of weak targets. The computer simulation models of the sensors will include the effects of many issues such as finite sensor resolution, limitations on the sensor resources, atmospheric refraction, sensor pointing errors, sea-surface induced multipath, nonhomogeneous clutter, sea clutter, etc. that are omitted in most of the legacy simulations. The two primary accomplishments for the first year of this program were the development of a phased array radar model with search and track management functions for multiple targets as well as the development of a sea-clutter model with moving target indictor (MTI) waveform designs
Blind adaptive dereverberation of speech signals using a microphone array by Tariq Saad Bakir( file )
1 edition published in 2003 in English and held by 0 libraries worldwide
The spatial diversity provided by the microphone array creates the equivalent of multiple channels, where each channel is the impulse response of the source to each microphone and is modeled as an FIR filter. This is equivalent to a single-input multiple-output (SIMO) FIR system. The dereverberation is accomplished through the inversion of the acoustical impulse responses. The inverse filters, i.e. equalizers, are found by minimizing what we refer to as a Reduced Mutually Referenced Equalizers (RMRE) error criterion which finds the equalizers at a subset of all possible delays, making the method applicable to the long nonminimum phase FIR impulse responses that characterize acoustical impulse responses. One advantage of this method is that the equalizers are found directly without the need for an impulse response estimation step. Also, unlike many classical microphone array dereverberation methods based on beamforming, the proposed method does not require the speaker location or the microphones' locations be known or set in predefined positions inside the room
Applications of Multiconductor Transmission Line Theory to the Prediction of Cable Coupling. Volume 5. Prediction of Crosstalk Involving Twisted Wire Pairs ( file )
1 edition published in 1978 in English and held by 0 libraries worldwide
A transmission line model of the twisted wire pair is presented which may be used to compute electromagnetic coupling between the twisted wire pair and other circuits. The model is derived by representing the transmission line for the twisted wire pair as a cascade of uniform loops and 'abruptly' nonuniform twists. The overall transmission line matrix is found by cascading the chain parameter matrices, which represent the loops, with the permutation matrices, that represent the twists. Comparisons are presented between the twisted wire pair, the straight wire pair, and the single wire circuit configurations to determine the relative effectiveness in the reduction of electromagnetic coupling. Experimental results are compared to the model predictions which verify that the chain parameter model is accurate to within + or - 3 dB for frequencies such that the line is electrically short (i. e. 1/10 lambda). Finally a second model, the low frequency model, is presented and is shown to be as accurate as the chain parameter model in the prediction of coupling at low frequencies. This low frequency model is very appealing in that it is conceptually much easier to model and also less time consuming, computationally
 
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