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1993

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Articles 1 - 30 of 1543

Full-Text Articles in Engineering

Comparison Of Air Traffic Control Candidate Ability With Simulator-Based Training Measures, Lawrence A. Tomaskovic Dec 1993

Comparison Of Air Traffic Control Candidate Ability With Simulator-Based Training Measures, Lawrence A. Tomaskovic

Theses - Daytona Beach

The purpose of this study was to determine if the utilization of an experimental computer-based selection test battery would aid in the prediction of a candidates performance when using an air traffic control computer-based simulation program. Each candidate completed the selection test battery, and then received air traffic control instruction using the air traffic control simulation program incorporated in the TRACON/Pro™ simulator system. The selection test battery results were correlated with the subsequent simulator scoring results.


The Effect Of Active And Passive Control On Air Traffic Controller Dynamic Memory, Esa M. Rantanen Dec 1993

The Effect Of Active And Passive Control On Air Traffic Controller Dynamic Memory, Esa M. Rantanen

Theses - Daytona Beach

The purpose of this study was to investigate the effect of automated and passive control on air traffic controller dynamic memory. The study consisted of two experiments, each involving a realistic ATC scenario for radar approach control with a mix of arriving and departing traffic. In Experiment I, the subjects performed manual control of the traffic while, in Experiment II, the scenario was highly automated and the subjects were tasked with only monitoring the situation. The dynamic memory performance was measured by interrupting the scenario and having the subjects recall the traffic situation at the moment of simulation interruption. The ...


On Stationary And Moving Interface Cracks With Frictionless Contact In Anisotropic Bimaterials, Xiaomin Deng Dec 1993

On Stationary And Moving Interface Cracks With Frictionless Contact In Anisotropic Bimaterials, Xiaomin Deng

Faculty Publications

The asymptotic structure of near-tip fields around stationary and steadily growing interface cracks, with frictionless crack surface contact, and in anisotropic bimaterials, is analysed with the method of analytic continuation, and a complete representation of the asymptotic fields is obtained in terms of arbitrary entire functions. It is shown that when the symmetry, if any, and orientation of the anisotropic bimaterial is such that the in-plane and out-of-plane deformations can be separated from each other, the in-plane crack-tip fields will have a non-oscillatory, inverse-squared-root type stress singularity, with angular variations clearly resembling those for a classical mode II problem when ...


Modeling Technique For Optimal Recovery Of Immiscible Light Hydrocarbons As Free Product From Contaminated Aquifer, Grant S. Cooper Jr., R. C. Peralta, J. J. Kaluarachchi Dec 1993

Modeling Technique For Optimal Recovery Of Immiscible Light Hydrocarbons As Free Product From Contaminated Aquifer, Grant S. Cooper Jr., R. C. Peralta, J. J. Kaluarachchi

Civil and Environmental Engineering Faculty Publications

Contamination sites associated with light non-aqueous phase liquids {LNAPL) are numerous and represent difficult cleanup problems. Remediation methods for cleanup of LNAPL fluids in subsurface systems are continuously evolving with the development of various technologies for pump.-and~treat, soil venting, and in-situ bioremediation. Evaluating the effectiveness of remediation techniques as well as attempting to improve their efficiency has been a focus of many researchers, These efforts have included the development of computer simulation models to predict and analyze the fluid movement, entrapment, and mobilization of three~phase systems in porous media. The capability of computer models that not only ...


Domino Online Terpercaya, Agen Domino Online Dec 1993

Domino Online Terpercaya, Agen Domino Online

agen domino online

Berikut ini adalah sebuah abstact dari domino online terpercaya yang sudah banyak kita temui di berbagai macam jejaringan internet maupun di sosial media juga.
Domino online merupakan permainan 2 kartu maupun 4 kartu tergantung dari permainan yang dimainkan seperti domino qiu qiu ( di mana bermain dengan 4 kartu ) dan adu q ( di mana bermain hanya dengan 2 kartu )
Dan permainan domino sudah banyak beredar di app store bahkan permainan domino sudah beredar di situs-situs yang berhubungan JUDI dan dalam permainan tersebut memakai uang asli dengan cara transaksi melalui online
Bagi seorang pro judi tidak akan sulit dalam memperlajari permainan agen ...


"The Right Stuff", Farming By Location, Tom Colvin, Jack Ambuel, Kandiah Jeyapalan Dec 1993

"The Right Stuff", Farming By Location, Tom Colvin, Jack Ambuel, Kandiah Jeyapalan

Proceedings of the Integrated Crop Management Conference

A satellite-based positioning system is being developed to determine the location of farm equipment while working in the field. A satellite receiver mounted in a moving tractor or combine calculates position coordinates based on signals received from a selection of satellites in the Department of Defense Global Positioning System (GPS). The position coordinates are retrieved from the receiver by a computer and combined in a common data base with additional information collected by the computer such as yield, soil fertility, soil moisture, temperature, implement draft, and fuel consumption. There are a number of possible applications for this system. One is ...


Post-Harvest Management Strategies For '93 Corn, William F. Wilcke Dec 1993

Post-Harvest Management Strategies For '93 Corn, William F. Wilcke

Proceedings of the Integrated Crop Management Conference

Cool, wet growing seasons like 1993 can result in late harvest of wet, immature, low-quality corn. Quality problems include:


Selecting Fans And Determining Airflow For Grain Drying And Storage, William F. Wilcke, R. Vance Morey Dec 1993

Selecting Fans And Determining Airflow For Grain Drying And Storage, William F. Wilcke, R. Vance Morey

Proceedings of the Integrated Crop Management Conference

Using fans to force air having the proper temperature and relative humidity through a crop is a valuable technique for maintaining quality after harvest. The air helps maintain the moisture and temperature of a crop at levels that prevent growth of harmful fungi and insects.


Soil Compaction Problems Of 1993, Stewart W. Melvin Dec 1993

Soil Compaction Problems Of 1993, Stewart W. Melvin

Proceedings of the Integrated Crop Management Conference

The 1993 crop season will be one that few Iowa farmers will forget. Excess precipitation was common from the last half of 1992 and throughout the entire 1993 cropping season. There has been an increased concern over soil compaction problems throughout this season, and what these problems may create for the 1994 crop year. The objective of this paper will be to review how and why the problem has occurred and what should be done, if anything, to minimize the problem in 1994.


I'Ve Got It ... Or Maybe I Don't Dec 1993

I'Ve Got It ... Or Maybe I Don't

Syracuse University Magazine

No abstract provided.


66. In Memoriam Herman F. Mark, Otto Vogl, Marcel Dekker Dec 1993

66. In Memoriam Herman F. Mark, Otto Vogl, Marcel Dekker

Emeritus Faculty Author Gallery

No abstract provided.


Polymer Science At The Kyoto Institute Of Technology, Kyoto, Japan, Otto Vogl, Shinzo Kohjiya, Takeo Araki Dec 1993

Polymer Science At The Kyoto Institute Of Technology, Kyoto, Japan, Otto Vogl, Shinzo Kohjiya, Takeo Araki

Emeritus Faculty Author Gallery

No abstract provided.


Advances In Degradable Polymers, Otto Vogl, Andrea Eckert Dec 1993

Advances In Degradable Polymers, Otto Vogl, Andrea Eckert

Emeritus Faculty Author Gallery

No abstract provided.


Two-Temperature Discrete Model For Nonlocal Heat Conduction, Sergey Sobolev Dec 1993

Two-Temperature Discrete Model For Nonlocal Heat Conduction, Sergey Sobolev

Sergey Sobolev

The two-temperature discrete model for heat conduction in heterogeneous media is proposed. It is shown that the discrete model contains as limiting cases both hyperbolic and parabolic heat conduction equations for propagative and diffusive regimes, respectively. To obtain these limiting cases two different laws of continuum limit have been introduced. The evolution of the two-temperature system comprises three stages with distinct time scales : fast relaxation of each subsystem to local equilibrium, energy exchange between the subsystems and classical hydrodynamics.


Introduction To Leveling - A Training Guide For Road Maintenance Personnel In Indiana's Counties, Cities And Towns, Herpicc Dec 1993

Introduction To Leveling - A Training Guide For Road Maintenance Personnel In Indiana's Counties, Cities And Towns, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This booklet presents the basic concepts of leveling and is intended as a reference for those employees performing essential leveling operations for the construction of roads and drainage structures.


Acuta Enews December 1993, Vol. 22, No. 12 Dec 1993

Acuta Enews December 1993, Vol. 22, No. 12

ACUTA Newsletters

In This Issue

Board Report

President's message

Telecom talks $$$ at UNM

US West to test high speed transmission

Big MAN on campus

Student toll fraud


Application Of Fuzzy Logic For Performance Enhancement Of Drives, Gilberto Costa Sousa Dec 1993

Application Of Fuzzy Logic For Performance Enhancement Of Drives, Gilberto Costa Sousa

Doctoral Dissertations

Fuzzy logic shows enormous potential for advancing power electronics technology. Its application to DC and AC drives control is discussed here.

Initially, a phase-controlled bridge converter DC drive was considered. Analysis of converter performance at continuous and discontinuous conduction modes was first conducted. Fuzzy control was used to linearize the transfer characteristics of the converter in discontinuous conduction mode. It was then extended to current and speed loops, replacing the conventional proportional-integral controllers. The control algorithms were developed in detail, and verified by PC-SIMNON (developed by Lund Institute of Technology Sweden) digital simulation. Significant performance improvement was achieved over conventional ...


Effect Of A Range Ring And Of Intruder Vertical Rate On Pilot Perception Of Separation On A Cockpit Display Of Traffic Information, Paul V. Wassell Dec 1993

Effect Of A Range Ring And Of Intruder Vertical Rate On Pilot Perception Of Separation On A Cockpit Display Of Traffic Information, Paul V. Wassell

Theses - Daytona Beach

This study was conducted to determine the effect of a range ring and intruder vertical rate on pilots’ perception of aircraft separation as viewed on a cockpit display of traffic information. A group of 30 pilots from Embry-Riddle Aeronautical University participated as subjects. SuperCard® Version 1.6 software and a Macintosh IIsi® personal computer were employed to generate the simulation of a cockpit display of traffic information. Each pilot monitored 80 unique scenarios in which they determined, as early as possible, what the vertical miss distance would be when a single intruder passed ownship. The pilots’ decision time and perceived ...


A Feasibility Study Of A Private Entity Competing With Fbos For Airline Ground Handling Contracts, Carlos A. Vergas Dec 1993

A Feasibility Study Of A Private Entity Competing With Fbos For Airline Ground Handling Contracts, Carlos A. Vergas

Theses - Daytona Beach

This thesis investigates whether a private entity can compete with fixed base operators (FBOs) for airline ground handling contracts. Separating the research method into five phases, the author first conducts a need analysis. Then, the author dissects the structure of existing ground handling contracts. Thirdly, the average service charges presently in place are tabulated. Fourthly, a financial analysis is performed including the calculation of the break-even point at a profit. Finally, a model of ground handling operation is simulated using an existing air carrier’s ground handling contract.


The Perception Of Travel Agents As To Passenger Acceptance Of The High Speed Civil Transport In Commercial Airline Service: A Study Of Tomorrow's Transpacific Air Travel, James H. Starnes Iii Dec 1993

The Perception Of Travel Agents As To Passenger Acceptance Of The High Speed Civil Transport In Commercial Airline Service: A Study Of Tomorrow's Transpacific Air Travel, James H. Starnes Iii

Theses - Daytona Beach

Through a cooperative effort between NASA, Boeing Commercial Airplane Group, Douglas Aircraft Company, GE Aircraft Engines, and Pratt & Whitney, technology for a new-generation supersonic transport aircraft is being developed. To determine if air travelers will choose this aircraft, the High Speed Civil Transport (HSCT), as their mode of air transportation on transpacific routes, a self-developed questionnaire was sent to randomly selected travel agents in the Los Angeles, California area. The questionnaire examined criteria that passengers use to select transpacific flights, including fare, schedule, flight time length, and comfort. Results indicated that all passengers will be attracted to supersonic air service ...


The Use Of Videotape During Post-Flight Debriefing Of Simulator Flights To Improve Student Learning And Reduce Instructional Time, Stanley Paul Rowe Dec 1993

The Use Of Videotape During Post-Flight Debriefing Of Simulator Flights To Improve Student Learning And Reduce Instructional Time, Stanley Paul Rowe

Theses - Daytona Beach

The purpose of this study was to determine if videotaping students during simulator flights and using the results as a teaching tool would improve student learning and require less instructional time. Thirty subjects were randomly selected from students enrolled in an instrument rating flight course at Embry-Riddle Aeronautical University. A Frasca 141 simulator and a Panasonic video camera were used as the data gathering instruments. The treatment group reviewed the instructional lessons on videotape during their post-flight debriefing. At the end of the experiment, both groups received a posttest. The results of the posttest and the amount of instructional hours ...


Effect Of Joystick Versus Control Yoke Use On Personal Computer (Pc) Flight Training: A Comparative Analysis, Gregory Alan Fontaine Dec 1993

Effect Of Joystick Versus Control Yoke Use On Personal Computer (Pc) Flight Training: A Comparative Analysis, Gregory Alan Fontaine

Theses - Daytona Beach

The purpose of this study was to provide a comparative performance analysis of a generic control yoke device and a generic joystick device. The comparison provided data needed for further evaluation of personal computer (PC) aircrew training device (ATD) potential. Both devices were used in support of the same PC flight simulation software program, and were evaluated using the experimental research method. Objective and subjective data were obtained during controlled testing, and subsequently analyzed using basic summation and t-test methods. The results tested the research hypothesis that there is no significant difference in personal computer ATD operator performance using a ...


Wildlife Exposure Factors Handbook, Appendix: Literature Review Database, Volume Ii Of Ii, United States Environmental Protection Agency Dec 1993

Wildlife Exposure Factors Handbook, Appendix: Literature Review Database, Volume Ii Of Ii, United States Environmental Protection Agency

U.S. Environmental Protection Agency Papers

This Appendix is intended to accompany the Wildlife Exposure Factors Handbook (hereafter referred to as the Handbook) and should be used only by individuals familiar with the Handbook. The species-specific values for the exposure factors presented in Chapter 2 of the Handbook of are a subset of the data included in the tables of this Appendix. Most values identified in the literature reviewed for the Handbook are included in this Appendix. For some exposure factors for some species, large quantities of data are available. For these factors and species, we tried to select data that represented a range of values ...


Wildlife Exposure Factors Handbook, Volume I Of Ii, United States Environmental Protection Agency Dec 1993

Wildlife Exposure Factors Handbook, Volume I Of Ii, United States Environmental Protection Agency

U.S. Environmental Protection Agency Papers

The Exposure Assessment Group of the Office of Health and Environmental Assessment (OHEA) has prepared the Wildlife Exposure Handbook in support of the Office of Solid Waste and Emergency Response and the Office of Water. The Handbook provides information on various factors used to assess exposure to wildlife. The goals of the project are (1) to promote the application of risk assessment methods to wildlife species, (2) to foster a consistent approach to wildlife exposure and risk assessments, and (3) to increase the accessibility of the literature applicable to these assessments.
The bulk of the document summarizes literature values for ...


A Concept For Sled Testing Minuteman Iii Guidance Systems, Hossny El-Sherief, Dave Knight, Daniel J. Simon, Myron Teeter Dec 1993

A Concept For Sled Testing Minuteman Iii Guidance Systems, Hossny El-Sherief, Dave Knight, Daniel J. Simon, Myron Teeter

Electrical Engineering & Computer Science Faculty Publications

No abstract provided.


Adsorption Equilibrium Of Benzene-P-Xylene Vapor Mixture On Silicalite, Jianmin Li, Orhan Talu Dec 1993

Adsorption Equilibrium Of Benzene-P-Xylene Vapor Mixture On Silicalite, Jianmin Li, Orhan Talu

Chemical & Biomedical Engineering Faculty Publications

Adsorption equilibrium of benzene-p-xylene vapor mixture on silicalite is measured at 70^oC with a specially designed cyclic volumetric apparatus at pressure levels of 2.53 and 1.20 kPa. The isobaric isotherms are S-shaped, and selectivity curves at different pressures cross over; the p-xylene selectivity at 2.53 kPa is higher than that at 1.20 kPa over a certain composition range. The heterogeneous ideal adsorption solution (HIAS) model implemented on two patches qualitatively predicts these highly unusual behavior. The observed extraodinary phenomena are attributed to structural heterogeneity, a result of the tight-fit of sorbate molecules ...


Coping With Contaminated Wells, Thomas D. Glanville Dec 1993

Coping With Contaminated Wells, Thomas D. Glanville

Agriculture and Environment Extension Publications

The most common cause of well water test failures is bacterial problems caused by well deterioration. This publication addresses how to handle contaminated well issues by looking at coliform and nitrate problems.


Lattice-Dynamical Study Of The Premartensitic State Of The Cu-Al-Be Alloys, Lluís Mañosa, Jerel L. Zarestky, Thomas A. Lograsso, Dwight W. Delaney, C. Stassis Dec 1993

Lattice-Dynamical Study Of The Premartensitic State Of The Cu-Al-Be Alloys, Lluís Mañosa, Jerel L. Zarestky, Thomas A. Lograsso, Dwight W. Delaney, C. Stassis

Ames Laboratory Publications

Neutron-scattering techniques have been used to study the premartensitic state of a family of Cu-Al-Be alloys, which transform from the bcc phase to an 18R martensitic structure. We find that the phonon modes of the TA2[110] branch have very low energies with anomalous temperature dependence. A slight anomaly at q=2/3 was observed; this anomaly, however, does not change significantly with temperature. No elastic peaks, related to the martensite structure, were found in the premartensitic state of these alloys. The results are compared with measurements, performed under the same instrumental conditions, on two Cu-Al-Ni and a Cu-Zn-Al ...


Development Of A Systematic Approach To The Implementation Of A Computer Integrated Manufacturing (Cim) For Small To Medium Sized Companies, G. Steven Trimmer Dec 1993

Development Of A Systematic Approach To The Implementation Of A Computer Integrated Manufacturing (Cim) For Small To Medium Sized Companies, G. Steven Trimmer

Master's Theses

CIM technology is rapidly becoming an essential part of businesses of all types and sizes. The impact on the culture of the enterprise is possibly of even greater complexity. Most existing implementations have been done by large businesses large teams of specialized talent.

The unique scope of this work is to simplify the implementation of CIM for small companies. The basic research derived from the WMU/IBM CIM Management Center, a fully functioning CIM facility that provides hands on experience to students and regional businesses.

The cultural references concerning CIM are derived from reading and personal experiences with industry while ...


Toward Virtual Digital Mammograms For Research And Training In Tumor Detection, Charles F. Babbs, Leslie A. Geddes Dec 1993

Toward Virtual Digital Mammograms For Research And Training In Tumor Detection, Charles F. Babbs, Leslie A. Geddes

Weldon School of Biomedical Engineering Faculty Working Papers

Research in the processing, compression, transmission, and interpretation of digital radiographic images requires evaluation of a wide variety of test images, varying in format, in spatial resolution, and in anatomic content. To evaluate the diagnostic performance of observers using novel versus conventional image formats, large numbers of test images containing known abnormalities are required. This report describes a method for creating high resolution, virtual digital mammograms from computational models of the human breast that include branched lobulated ducts and suspensory ligaments embedded in fatty subcutaneous tissue. Breast phantoms may include any of three types of simulated tumors (fibroadenomas, invasive ductal ...