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1999

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Evaluation Of Multimedia Chemistry Courseware, Ryan D. Isahac Aug 1999

Evaluation Of Multimedia Chemistry Courseware, Ryan D. Isahac

Theses

With the every growing costs of running a Chemistry laboratory and the ever-changing needs of today's studenis a logical alternative seems to be a computer based instructional format. When delivering courseware via the Internet, the greatest problem comes in making the interface and applications user-friendly and not jusi attractive. In order to test the utility of such a site, subjects are recruited and asked to evaluate the system. Their responses are essential in designing and improving the program to best meet the needs of students. In order to address student concerns, a Help Page was developed which clarified areas and …


Study Of The Effects Of Deuterium Implantation Upon The Performance Of Thin-Oxide Cmos Devices, Sumit Kishore Aug 1999

Study Of The Effects Of Deuterium Implantation Upon The Performance Of Thin-Oxide Cmos Devices, Sumit Kishore

Theses

The use of ultra thin oxide films in modem semiconductor devices makes them increasingly susceptible to damage due to the hot carrier damage. Deuterium in place of hydrogen was introduced by ion implantation at the silicon oxide-silicon interface during fabrication to satisfy the dangling bonds. Deuterium was implanted at energies of 15, 25 and 35 keV and at a dose of 1x1014/cm2. Some of the wafers were subjected to N2O annealing following gate oxide growth. It was demonstrated that ion implantation is an effective means of introduction of deuterium. Deuterium implantation brings about a …


Teaching Operating System Concepts Using Multimedia And Internet, Amit Narielwala Aug 1999

Teaching Operating System Concepts Using Multimedia And Internet, Amit Narielwala

Theses

The prime objective of the thesis is to research and demonstrate the benefits and advantages of using Internet and multimedia tools for an interactive educational leaning experience. As we speak Internet is developing as a mainstream communication medium via personal computer as a tool at a breathtaking speed. The information technology field is a prime reason behind such phenomenon as it continues to mature and expand. In what is described as the "information age", the students of information technology need to master and devour new complex technological concepts and ideas at faster rate than ever before. The traditional approach using …


Variable Gain Control Of Brushless Dc Motor Control With Low Resolution Sensors, Chung-Hsiang Wang Aug 1999

Variable Gain Control Of Brushless Dc Motor Control With Low Resolution Sensors, Chung-Hsiang Wang

Theses

In this work, feasibility of using low cost, low resolution sensor for high performance brushless dc (BLDC) motor speed control is investigated. Conventional control, using a tachometer or high resolution encoder, suffers from drawbacks such as high cost, large physical volume, and high sensor processing bandwidth. On the other hand, sensorless BLDC motor, appealing in its hardware simplicity, does not provide sufficient fast performance. Using a standard low resolution sensor, such as a hall sensor or commutation encoder, a compromise between cost and performance can be obtained. However, the use of a low resolution sensor does pose a challenge to …


The Daily Egyptian, August 30, 1999, Daily Egyptian Staff Aug 1999

The Daily Egyptian, August 30, 1999, Daily Egyptian Staff

August 1999

No abstract provided.


Nota Bene, August 30, 1999 Aug 1999

Nota Bene, August 30, 1999

Nota Bene, 1999

No abstract provided.


Current, August 30, 1999, University Of Missouri-St. Louis Aug 1999

Current, August 30, 1999, University Of Missouri-St. Louis

Current (1990s)

No abstract provided.


August 30, 1999, James Madison University Aug 1999

August 30, 1999, James Madison University

The Breeze, 1990-1999

The Breeze is the student newspaper of James Madison University in Harrisonburg, Virginia.


Univercity News (1999-08-30) Aug 1999

Univercity News (1999-08-30)

UniverCity News, 1998-2001

VCU Today, the University’s first official administrative organ, began as a somewhat irregular monthly publication but moved to a bi-weekly newspaper format in the 1980s. The newspaper changed its name to VCU Voice in 1988 and ten years later it appeared under the title UniverCity News. As it neared the end of its run as a physical newspaper, the publication became simply VCU News. These four publications were essentially the same periodical published under different titles by the Office of University Relations. VCU News appeared online for the first time in 2002.


The Bg News August 30, 1999, Bowling Green State University Aug 1999

The Bg News August 30, 1999, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. August 30, 1999. Volume 84-Issue 5.


Long-Lived Localized Field Configurations In Small Lattices: Application To Oscillons, M. Gleiser, A. Sornborger Aug 1999

Long-Lived Localized Field Configurations In Small Lattices: Application To Oscillons, M. Gleiser, A. Sornborger

Dartmouth Scholarship

Long-lived localized field configurations such as breathers, oscillons, or more complex objects naturally arise in the context of a wide range of nonlinear models in different numbers of spatial dimensions. We present a numerical method, which we call the adiabatic damping method, designed to study such configurations in small lattices. Using three-dimensional oscillons in φ4 models as an example, we show that the method accurately (to one part in 105 or better) reproduces results obtained with static or dynamically expanding lattices, dramatically cutting down in integration time. We further present results for two-dimensional oscillons, whose lifetimes would be prohibitively …


Ddasaccident357, Hd-Aid Aug 1999

Ddasaccident357, Hd-Aid

Global CWD Repository

The accident had taken place at 1245hrs; the injured deminer arrived at Emergency hospital in Sulymania at 1400hrs and was admitted. The prodder which he had been using was badly damaged and had taken on the shape of a half moon. This indicated that the point of the prodder had detonated the mine.


Underachieving Women And Girls: A Choice Between Career And Family, Annie Dunavan Aug 1999

Underachieving Women And Girls: A Choice Between Career And Family, Annie Dunavan

Theses

The purpose of this study was to explore the relationships between gender, self-efficacy and career development. Sixty-three high school freshmen completed questionnaires pertaining to these areas. Results indicated that self-efficacy is related to gender and career development.


August 30, 1999, The Daily Mississippian Aug 1999

August 30, 1999, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.


Daaka V. Carmel Hospital, Dorit Beinisch, Theodor Or, Tova Strasberg-Cohen, Aharon Barak, Shlomo Levin, Mishael Cheshin, Izhak Englard Aug 1999

Daaka V. Carmel Hospital, Dorit Beinisch, Theodor Or, Tova Strasberg-Cohen, Aharon Barak, Shlomo Levin, Mishael Cheshin, Izhak Englard

Translated Opinions

Facts: Appellant was admitted to the hospital for an operation on her left leg, and she signed a consent form agreeing to the operation. Two days later, after being placed on the operating table and receiving sedatives in advance of undergoing anesthesia, she was asked to sign a consent form for a biopsy operation on her right shoulder. She did so, and the biopsy was performed and did not reveal malignancy. After being released from the hospital, her shoulder remained stiff. Appellant sued the hospital for negligence, claiming negligence in failing to receive her informed consent, in the decision to …


August 28, 1999 (Pages 4525-4668), Pennsylvania Legislative Reference Bureau Aug 1999

August 28, 1999 (Pages 4525-4668), Pennsylvania Legislative Reference Bureau

Volume 29 (1999)

No abstract provided.


Applying Positive Behavioral Support And Functional Behavioral Assessment In Schools: Technical Assistance Guide, George Sugai, Robert H. Horner, Glen Dunlap, Meme Hieneman, Timothy J. Lewis, Michael C. Nelson, Terrance Scott, Carl Liaupsin, Wayne Sailor, Ann P. Turnbull, H. Rutherford Turnbull, Donna Wickham, Michael B. Ruef, Brennan Wilcox Aug 1999

Applying Positive Behavioral Support And Functional Behavioral Assessment In Schools: Technical Assistance Guide, George Sugai, Robert H. Horner, Glen Dunlap, Meme Hieneman, Timothy J. Lewis, Michael C. Nelson, Terrance Scott, Carl Liaupsin, Wayne Sailor, Ann P. Turnbull, H. Rutherford Turnbull, Donna Wickham, Michael B. Ruef, Brennan Wilcox

Graduate Studies in Education

No abstract provided.


The Effects Of Metallic Cobalt Abbition On The Performance Of Pasted Nickel Electrodes, An-Bao Yuan, Jian-Qing Zhang, Wan-Chun Ding, Shao-An Cheng, Chu-Nan Cao Aug 1999

The Effects Of Metallic Cobalt Abbition On The Performance Of Pasted Nickel Electrodes, An-Bao Yuan, Jian-Qing Zhang, Wan-Chun Ding, Shao-An Cheng, Chu-Nan Cao

Journal of Electrochemistry

The Ni-foam pasted nickel electrodes prepared by coprecipitated Ni1-XZnX(OH)2 with and without cobalt power addition have been studied. The electrode with addition of metallic cobalt showed a higher performance both in discharge capacity and cycle life. It is known from the experiment results that the addition of Co can remarkably increase the active material utilization which is suggested to be improvement of discharge depth due to the conducting CoOOH formed in the first activation charging. The superior capacity during cycling could be attributed to the synergistic action of zinc and cobalt addition ,especially to the …


The Eastern Echo, August 28, 1999, Welcome Back Edition, Section 4, Eastern Michigan University Aug 1999

The Eastern Echo, August 28, 1999, Welcome Back Edition, Section 4, Eastern Michigan University

EMU Student Newspaper: The Normal News & The Eastern Echo

No abstract provided.


What's On The Docket? (August 27, 1999), William & Mary Law School Aug 1999

What's On The Docket? (August 27, 1999), William & Mary Law School

The Docket

No abstract provided.


The Tiger Vol. 93 Issue 1 1999-08-27, Clemson University Aug 1999

The Tiger Vol. 93 Issue 1 1999-08-27, Clemson University

Tiger Newspapers

No abstract provided.


The Daily Egyptian, August 27, 1999, Daily Egyptian Staff Aug 1999

The Daily Egyptian, August 27, 1999, Daily Egyptian Staff

August 1999

No abstract provided.


The Bg News August 27, 1999, Bowling Green State University Aug 1999

The Bg News August 27, 1999, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. August 27, 1999. Volume 84-Issue 4.


August 27, 1999, The Daily Mississippian Aug 1999

August 27, 1999, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.


A Consolidated Acs Flight Software Development Approach For The Earth Observing-1 Spacecraft , Kathie Blackman, Jeff D'Agostino Aug 1999

A Consolidated Acs Flight Software Development Approach For The Earth Observing-1 Spacecraft , Kathie Blackman, Jeff D'Agostino

Small Satellite Conference

The Earth Observing 1 (EO-l) mission is part of NASA's New Millennium Program (NMP). The EO-l Attitude Control System (ACS) flight software was based on the Tropical Rainfall Measuring Mission (TRMM) flight software, both of which were developed by the Hammers Company, Inc. Lessons learned during TRMM ACS software development led to a consolidated software development approach for the EO-l ACS. The approach started with a standalone system that incorporated the ''first-cut'' flight software into the spacecraft simulation, allowing closed loop simulations to run on a desktop computer. Consequently, more algorithm and coding errors were detected earlier in the development …


Spacecraft Computers On The Seastar Satellite, Sawat Tantiphanwadi Aug 1999

Spacecraft Computers On The Seastar Satellite, Sawat Tantiphanwadi

Small Satellite Conference

The SeaStar spacecraft requires a high performance computer system to handle its various requirements. It must process not only the high-rate data from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) instrument, but also the spacecraft ground interface system and the attitude control system data. This paper will describe the spacecraft computer architecture and its hardware. With minimum peripheral changes, the same computer can be configured to perform the payload, or the ground interface, or the attitude control functions. Each flight computer consists of three computer slices and a power module. There are two main flight computers on the SeaStar satellite; the …


Progress Toward Hydrogen Peroxide Micropropulsion, John Whitehead, Michael Dittman, Arno Ledebuhr Aug 1999

Progress Toward Hydrogen Peroxide Micropropulsion, John Whitehead, Michael Dittman, Arno Ledebuhr

Small Satellite Conference

A new self-pressurizing propulsion system has liquid thrusters and gas jet attitude control without heavy gas storage vessels. A pump boosts the pressure of a small fraction of the hydrogen peroxide, so that reacted propellant can controllably pressurize its own source tank. The warm decomposition gas also powers the pump and is supplied to the attitude control jets. The system has been incorporated into a prototype microsatellite for terrestrial maneuvering tests. Additional progress includes preliminary testing of a bipropellant thruster, and storage of unstabilized hydrogen peroxide in small sealed tanks.


A Low Power Approach To Small Satellite Propulsion, Joe Cardin, Larry Mosher Aug 1999

A Low Power Approach To Small Satellite Propulsion, Joe Cardin, Larry Mosher

Small Satellite Conference

Small Satellites are emerging as the preferred platform for a wide variety of earth orbit and even interplanetary missions. These spacecraft are, by their very nature, extremely limited in volume, mass and power. Existing fluid propulsion options are too large, costly and complex for many small satellite applications. In an attempt to address this problem the Applied Physics Laboratory of Johns Hopkins University, as part of an advanced development contract with NASA, has contracted with V ACCO Industries. The objective of this program is to conceive and demonstrate a cold gas propulsion system specifically designed for small satellites. Major design …


A Maintenance-Free Battery Charge Control Approach For Nickel-Hydrogen Batteries, Andrew Lewin Aug 1999

A Maintenance-Free Battery Charge Control Approach For Nickel-Hydrogen Batteries, Andrew Lewin

Small Satellite Conference

The most common battery charging approaches for nickel-hydrogen batteries suffer from two key limitations. They either consistently under- or overcharge the battery or they require accurate knowledge of the battery capacity. For the ORBCOMM constellation of 36 small communications satellites, regular overcharging is unacceptable because it decreases battery life. Worse, the lost life occurs when the satellite constellation is facing its greatest usage demand. On the other hand, obtaining an accurate knowledge of the battery capacity requires an upfront effort to develop the necessary engineering tools and characterize battery performance. In addition, the satellite operator must bear the recurring expense …


Gyrowheel™ - An Innovative New Actuator/Sensor For 3-Axis Spacecraft Attitude Control , George Tyc, William Whitehead, Satya Pradhan, Douglas Staley, Cameron Ower, Jeff Cain, Michael Wiktowy Aug 1999

Gyrowheel™ - An Innovative New Actuator/Sensor For 3-Axis Spacecraft Attitude Control , George Tyc, William Whitehead, Satya Pradhan, Douglas Staley, Cameron Ower, Jeff Cain, Michael Wiktowy

Small Satellite Conference

The Bristol Gyro Wheel is an innovative attitude control system device that provides both an angular momentum bias and control torques about three axes while at the same time measuring the spacecraft angular rates about two axes. The principles of operation of this device are explained and the flight model design is described that is targeted at small satellite applications which is currently under development. A fully functional prototype of the GyroWheel has been developed that has demonstrated the actuator and rate sensing capabilities and some of the test results are given. One of the key advantages of the Gyro …