Digital Commons Network^™

An Organizational Framework For Homeland Defense, Terrence Kelly

The US Army War College Quarterly: Parameters

No abstract provided.

Book Reviews, Parameters Editors

The US Army War College Quarterly: Parameters

No abstract provided.

From The Editor, Robert H. Taylor

The US Army War College Quarterly: Parameters

No abstract provided.

The Effects Of Windchill Exposure On The Snow Crab, Chionoecetes Opilio, Jonathan J. Warrenchuk

Fisheries

Millions of snow crabs, 'Chionoecetes opilio, ' are aerially exposed during sorting in the annual Bering Sea commercial fishery. A laboratory experiment measured snow crab responses to windchill exposure. Crabs were exposed to 8 to 16 m/s windspeed and air temperatures from -2 to -10 C̊ for 5 minutes. Mortality, autonomy, and righting response were assessed for seven days post-treatment. Crabs experienced 40% to 100% mortality at windchill from -10 to 16 C̊. Reduced exposure time significantly reduced mortality. Autonomy was variable but pronounced below -10 C̊ windchill. The righting response was impaired after all but the least severe treatment. …

August 17, 2001, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Portrayal Vs. Reality: Images Of African Americans In Magazine Advertisements, Catherine Elizabeth Davis

Communication

The images of African Americans in magazine advertisements are changing. As these images change, researchers question whether or not African American socioeconomic and familial status are being accurately represented. George Gerbner's cultivation theory suggests that media play a role in shaping people's perceptions of minority groups. Using content analysis, this study compares the portrayal of African American socioeconomic and familial status in magazine advertisements with 1999 United States Census Bureau socioeconomic statistics of African Americans in the United States. This study found that a discrepancy exists between the portrayal and the reality of African American socioeconomic and familial status than …

Paleohydrology Of A Catastrophic Flood Release From Okmok Caldera And Post-Flood Eruption History At Okmok Volcano, Umnak Island, Alaska, Benjamin Alan Wolfe

Geosciences

Okmok caldera, located on the northeastern end of Umnak Island, Alaska, contained a 5.8 x 10⁹m³ lake that catastrophically drained as a result of failure of the 2050 yr. B.P. caldera rim between 1560 and 1010 yr. B.P. Flow competence equations, dam-break models, and the Simplified Dam-Break computer model were used to estimate the paleohydrology of the flood. Models indicate that the peak discharge at the breach in the caldera rim was at least 5.8 x 10⁴ m³/s, and the maximum possible discharge was 1.9 x 10⁶ m³/s. A second smaller flood release occurred 190 yr B.P., coinciding with the …

Disinfection By-Product Experiences In Alaskan Village Drinking Water Systems And The Caribou-Poker Creek Watershed, Jasprit Narr

Engineering

The purpose of this research was to study the disinfection by-product formation potential (DBPFP) in small drinking water systems in Alaska. As per the US. E.P.A's disinfectants/disinfection by-products (D/DBP) rule, the maximum contaminant limit (MCL) for the two major DBPs namely, total trihalomethanes (TTHMs) is 80 micrograms (ug) per liter (L) and 60 micrograms/liter for the five 5 halloacetic acids (HAA5). It was decided to conduct research on the total trihalomethane formation potential (TTHMFP) and the 5- haloacetic acid formation potential (HAA5PF) of the 17 Alaskan village drinking water systems with reportedly high TTHM and HAA5 values. It was found …

Development Of A Differential Gps Tracking System For Sounding Rocket Payloads, Jay Gregory Helmericks

Engineering

The purpose of this thesis was to develop a system that could track a sounding rocket payload with a commercial GPS receiver. A GPS receiver was chosen that still outputs raw data when the COCOM limits are exceeded. All the hardware to support the OEM GPS receiver in a reverse differential system was designed and built, including both a ground system and two flight systems to support both on-board storage and telemetry. A software program was developed to archive and compute positions from the raw data. The GPS system has been ground tested and flown on an Orion sounding rocket. …

Investigation Of North Pacific Sea Ice Anomalies In The Context Of Atmospheric And Oceanic Variability, Adrienne Tivy

Atmospheric Sciences

This study investigates the main mode of variability in North Pacific sea ice and examines the relationship between sea ice concentration and northern hemispheric climate variability for the period 1968-1997. Through empirical orthogonal function (EOF) analysis, correlations, and composite analysis, it was found that the seesaw pattern (first EOF of wintertime sea ice concentrations) between ice concentrations in the Bering Sea and the Sea of Okhotsk, generally used to characterize North Pacific sea ice, does not adequately address variability in the Sea of Okhotsk. Relationships between the sea ice dipole and the large-scale circulation were investigated and were found to …

Illinois State University Report, August 16, 2001, Illinois State University

Illinois State University Report (1966-2012)

Illinois State University bi-weekly employee newsletter.

Crystal Growth, Structure Determination And Magnetism Of A New Hexagonal Rhodate: Ba9rh8o24, Katharine E. Stitzer, M. D. Smith, J. Darriet, Hans Conrad Zur Loye

Faculty Publications

Single crystals of Ba9Rh8O24, grown from a molten potassium carbonate flux, crystallize in the spacegroup R¯3c with lattice parameters of a = 10.0899(4) and c = 41.462(2) Å. Magnetic measurements on oriented single crystals reveal the existence of magnetic anisotropy

Yamsat: The First Picosatellite Being Developed In Taiwan, Albert Lin, Chih-Li Chang, Steven Tsai, Joe Fong, Chan-Peng Chang, Robin Lin, Chin Wen Liu, Marco Yeh, M.H. Chung, Hsu-Pin Pan, Chi-Hung Hwang

Small Satellite Conference

This paper describes the current planning and design of the YamSat, the first picosatellite being developed in Taiwan. The design, analysis, manufacture, integration, test and operation of the YamSat will be performed by the National Space Program Office (NSPO), Taiwan, R.O.C, in cooperation with other domestic organizations and companies. It is a member of the CubeSat [1], 10cm x 10cm x 10cm size and within 1kg mass. The major objective of the YamSat is to qualify in space the components and technology developed in Taiwan, including a micro-spectrometer payload using Micro Electro Mechanical Systems (MEMS) technology. The YamSat will be …

Tu Sat 1—An Innovative Low-Cost Communications Satellite , Jacob Oehrig, Jeremy Schea, Adam Bennett, Noel Schutt, John Lee, W.C. Holmes, Dave Prentice, Andrew Platt, David Voss, Jonathan Voss, Jeffery Dailey, H.D. Voss

Small Satellite Conference

Taylor University (TU), an undergraduate liberal arts university, is developing a communication Cube- Sat. TU Sat 1 incorporates powerful microelectronics, a gravity gradient boom, and a low-cost email communications system capable of operating at a 115-kbps rate near 0.9 GHz. The goal is to demonstrate low cost communication for remote villages in third world countries. TU Sat 1 also includes a magnetometer and Langmuir probe to measure plasma density and temperature at an altitude of 650 km. Furthermore, TU Sat 1 provides students with the needed experience and skills to be on the leading edge of innovation.

Aptus: Applications For Tether United Satellites, Meredith Fitzpatrick

Small Satellite Conference

Two ten centimeter cube micro-satellites will be built at the W.R.Woolrich Laboratories at the University of Texas at Austin for the purpose of providing visual data regarding the changing density of the Earth’s atmosphere at low earth orbit altitudes, and investigating the ability of electro-dynamic tethers to change the orbital altitude of a small satellite. The cubes will be tethered together via a highly reflective Aracon fiber that will be approximately three kilometers in length. The cubes will separate after orbit deployment, placing the tether in tension. The tether will reflect sunlight as it passes over the Earth, making it …

The Design Of The Communication And Telemetry System Used By The Ionospheric Observation Nanosatellite Formation Mission , Anuradha Chandrasekaran, James Gutshall

Small Satellite Conference

This document describes the approach taken by the Ionospheric Observation Nanosatellite Formation (ION-F) communication team in designing and developing a ground communication system, space communication system, and amateur communication system for three satellites in the ION-F constellation. It outlines the mission objectives, the system requirements, the theory of operation, hardware, software, communication protocols; including equipment specifications and other major aspects of the system. An important feature of the communication system is the extensive use of commercial off the shelf (COTS) components, which has lowered cost and shortened development time. This system will be adopted by all three universities.

Low Thrust Trajectory Design For Crafti, Eric Morrow

Small Satellite Conference

The Canadian Robotic Asteroid Flyby and (Tentatively) Impact project (CRAFTI) proposes to accomplish an interplanetary mission to explore an asteroid while maintaining a budget of ~US$10 million. This cost target implies a launch as a secondary payload and hence a microsatsized spacecraft. The mission objective is to send two spacecraft to encounter the near-Earth asteroid Toutatis in 2008; one of these will fly by Toutatis at close range, while the other impacts the asteroid. An electric propulsion system is being considered to provide the thrust for the orbital manoeuvres. However, the thrust level achievable by this kind of system is …

A Ccsds Software System For A Single-Chip On-Board Computer Of A Small Satellite, Isabel Rutter, Tanya Vladimirova, Hans Tiggeler

Small Satellite Conference

The work presented in this paper is part of a Surrey Space Centre research project that aims to reduce the size of an on-board computer to a single chip facilitating further miniaturisation of small satellites. The paper is concerned with a communication system, specifically designed to meet the needs of a single-chip onboard computer - a simplified yet reliable and automated standalone alternative software implementation of the Consultative Committee of Space Data Systems (CCSDS) protocol communicating with a standard universal asynchronous receiver-transmitter (UART) peripheral. Details of the design and implementation stages of a CCSDS package coded in the language C …

Eastern Progress - 15 Aug 2001, Eastern Kentucky University

Eastern Progress 2001-2002

No abstract provided.

2001-2002, Collin College

Course Catalogs

Contains information on courses and class descriptions as well as campus resources at Collin College.

Analysis Of Corrosion Of Steel By Lead Bismuth Eutectic, John Farley, Dale L. Perry

Transmutation Sciences Materials (TRP)

The goal is to achieve a basic understanding of the corrosion of stainless steel by Lead Bismuth Eutectic (LBE), which has been proposed for use in the transmuter as both a coolant and as a sputtering target.

August 15th 2001, Hispanic News

Inland Empire Hispanic News

Governor Davis Hails third year of progress on SAT9 scores Page 2

Visitors end U.S stay with press conference and reception Page 3

Baca, Labor Hispanic Members of Congress, and Latino Organizations stand together in opposition to Fast Track Page 4

John Husing Page 5

Third Annual Riverside Community Action planning workshop ends. Future Activities are planned for forthcoming year Page 6 & 7

CHCI to honor Emilio and Gloria Estefan, Hon, Henry Cisneros Page 7

Baca, Labor Hispanic Members of Congress, and Latino Organizations stand together in opposition to Fast Track Page 8

Sounthern California Edison saluted for its …

Redshifts For 2410 Galaxies In The Century Survey Region, Gary Wegner, John R. Thorstensen, Michael J. Kurtz, Warren R. Brown, Daniel G. Fabricant, Margaret J. Geller, John P. Huchra, Ronald O. Marzke, Shoko Sakai

Dartmouth Scholarship

The Century Survey strip covers 102 deg² within the limits 85 ≤ α ≤ 165, 290 ≤ δ ≤ 300, equinox B1950.0. The strip passes through the Corona Borealis supercluster and the outer region of the Coma cluster. Within the Century Survey region, we have measured 2410 redshifts that constitute four overlapping complete redshift surveys: (1) 1728 galaxies with Kron-Cousins R_ph ≤ 16.13 covering the entire strip, (2) 507 galaxies with R_ph ≤ 16.4 in right ascension range 8^h32^m ≤ α ≤ 10 ^h45^m, equinox B1950.0, (3) 1251 galaxies with absorption- …

Exchange Bias In A Generalized Meiklejohn-Bean Approach, Christian Binek

Christian Binek Publications

A generalized Meiklejohn–Bean model is considered in order to derive an analytic expression for the dependence of the previous exchange bias term field on the layer thickness involved in ferromagnetic/antiferromagnetic heterosystems, on the orientation of the applied magnetic field with respect to the magnetic easy axes and on the quenched magnetization MAF of the antiferromagnetic pinning layer. While MAF is a well-known feature of field-cooled dilute antiferromagnets, it seems to occur quite generally also in pure AF pinning substrates. The new analytic expressions are successfully compared with recent experimental results and Monte Carlo investigations.

The Montana State University Nasa Space Grant Explorer-1 Science Reflight Commemorative Mission , M. Obland, G. Hunyadi, S. Jepsen, B. Larsen, D.M. Klumpar, C. Kankelborg, W.A. Hiscock

Small Satellite Conference

Montana State University's Space Science and Engineering Laboratory (SSEL) under support from the Montana NASA Space Grant Consortium is engaged in an earth orbiting satellite student project that will carry a reproduction, using current-day technology, of the scientific payload flown on the United States' first satellite, Explorer-1, February 1, 1958. The Montana EaRth Orbiting Pico Explorer (MEROPE) will carry a single Geiger counter into a 600 km, sun-synchronous polar orbit to measure the corpuscular radiation that characterizes the Van Allen Radiation Belts, first measured by Professor James Van Allen's group with Explorer-1. In contrast to Explorer-1's 14 kg mass, MEROPE, …

Satellite Imaging Service Analysis Using Queueing Theory, Yan Mai, P.L. Palmer

Small Satellite Conference

Earth observation using small satellites is leaving demonstration status and being proposed for more and more commercial applications. By analysing such a service from both end-user and satellite operator point-of-view, it is hoped to provide the information such as service performance, on-board resource status and key parameters for system optimisation before the spacecraft is designed, launched and put into service. In this paper, queueing theory, traditionally used to perform tra_c and e_ciency analysis in tele-communication and other queueing system, is applied in this new area - a commercial imaging service using small satellites. The introduction of queueing theory in our …

The Small Payload Orbit Transfer (Sport™) Vehicle And The Business Environment For The Next Generation Of Piggyback Launch Options , Ahmad Sabirin Arshad, Aaron Jacobovits, Yasser Ahmad, David Goldstein

Small Satellite Conference

AeroAstro and Astronautic Technology Sdn. Bhd. (ATSB) are developing the Small Payload ORbit Transfer (SPORT) Vehicle. Primarily designed to take advantage of the many auxiliary launch opportunities to Geosynchronous Transfer Orbit (GTO), SPORT acts as a small upper stage by moving a small payload from GTO to Low Earth Orbit (LEO), which is typically a much more desirable orbit. An innovative combination of aerobraking and chemical propulsion allows SPORT to accomplish this mission while keeping costs low. This paper provides an overview of the growing market for auxiliary launches, which also includes a discussion of launch brokering, SPORT, competing decommissioned …

Tropnet: The First Large Small-Satellite Mission, J. Smith

Small Satellite Conference

Every small-satellite enthusiast has hoped for the day when small satellites would gain the sophistication, political support and commercial viability to be used for main stream missions. The first phase of such a mission is currently being constructed by One Stop Satellite Solutions (OSSS) of Ogden, Utah and will launch May of 2002. The OS-2 payload will be delivered into a 650-km orbit using a Russian Dnepr launch vehicle furnished by the launch team of Kosmotraus and Thiokol. Aboard the OS-2 mission will be two satellites, which will demonstrate technical feasibility of the TropNet concept. TropNet is an equatorial LEO …

Charge Transfer And X-Ray Emission Reactions Involving Highly Charged Ions And Neutral Hydrogen, J. A. Perez, Ronald E. Olson, P. Beiersdorfer

Physics Faculty Research & Creative Works

The electron capture from hydrogen by highly charged-bare ions was studied using a three-body classical trajectory Monte Carlo (CTMC) method. The state-selective capture cross sections, calculated for a wide range of collision energies, were used to estimate x-ray emission cross sections. The capture process produced excited hydrogen-like ions and captured majority of electrons into one or two dopant states at low collision energies. The calculations predicted a large increase in the fraction of prompt x-rays produced with the lowering of the collision energy. The analysis suggested that ionization potential change for each collision and multiple capture played significant role in …

433 Eros Landing – Development Of Near Shoemaker’S Controlled Descent Sequence , Robert Nelson, Karl Whittenburg, Mark Holdridge

Small Satellite Conference

On February 12th, 2001, the NEAR Shoemaker spacecraft made its historic descent to the surface of the asteroid 433 Eros, becoming the first spacecraft to soft land on a small celestial body. Development of the final descent activity offered the NEAR team a difficult technical challenge as the spacecraft had been designed solely as a free flyer, not as a lander. The NEAR Shoemaker spacecraft rendezvoused with 433 Eros on February 14th, 2000. Following an intensive year of orbital operations collecting science data at decreasingly lower altitudes, the spacecraft was prepared to conduct its final activity, descending from its current …