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Articles 3751 - 3780 of 15105
Full-Text Articles in Entire DC Network
Faculty Senate Meeting Minutes, 08/24-1999, P 10-12, Unm Faculty Senate
Faculty Senate Meeting Minutes, 08/24-1999, P 10-12, Unm Faculty Senate
Faculty Senate Meeting Minutes, 1920 - 2013
No abstract provided.
August 24, 1999, The Daily Mississippian
August 24, 1999, The Daily Mississippian
Daily Mississippian (all digitized issues)
No abstract provided.
Navgold - An On-Orbit Test Bed For Experiments In Formation Flight, D. Sipple, J. Torley, F. Chavez, J. Velapoldi, D. Hanni, D. Gustavsson, B. Allard, T. De Leon, L. Morelli, J. Friend, C. Fosha, D. Schmidt
Navgold - An On-Orbit Test Bed For Experiments In Formation Flight, D. Sipple, J. Torley, F. Chavez, J. Velapoldi, D. Hanni, D. Gustavsson, B. Allard, T. De Leon, L. Morelli, J. Friend, C. Fosha, D. Schmidt
Small Satellite Conference
An initiative has been undertaken at the University of Colorado at Colorado Springs (CU-Colorado Springs) involving the design,development, launch, and operation of two nanosatellites. Objectives of the project, NavGold, include establishment of an on-orbit test bed for research, testing, and validation of critical nanosat technologies enabling formation flying and constellations. Additional educational objectives provide team members leadership opportunities in a multidisciplinary team with real hardware, budget, and scheduling challenges. Two identical nanosats will be built and flown. The spacecraft design includes a maneuvering propulsion system and three-axis active attitude determination and control. Absolute and precision relative navigation will be accomplished …
Uw Dawgstar: One Third Of Ion-F - An Element Of The Ionospheric Observation Nanosatellite Formation (Ion-F), Mark Campbell, Adam Bruckner, Ralph Ewig, Emilio Beltran, Esther Carlson, Kirsten Carpenter, Seung Chung, Benjamin Davenport, Farshad Forouhar, John Halligan, Jason Hammack, Mark Hilstad, George Hwee, Susan Kaltenbach, Gary Lai, Arti Nadkarni, Krystal Parker, Michael Peyton, Steve Pillar, William Shell, Dennis Titus, Michael Tucker, Apostolos Vlachos
Uw Dawgstar: One Third Of Ion-F - An Element Of The Ionospheric Observation Nanosatellite Formation (Ion-F), Mark Campbell, Adam Bruckner, Ralph Ewig, Emilio Beltran, Esther Carlson, Kirsten Carpenter, Seung Chung, Benjamin Davenport, Farshad Forouhar, John Halligan, Jason Hammack, Mark Hilstad, George Hwee, Susan Kaltenbach, Gary Lai, Arti Nadkarni, Krystal Parker, Michael Peyton, Steve Pillar, William Shell, Dennis Titus, Michael Tucker, Apostolos Vlachos
Small Satellite Conference
The preliminary design for the UW Dawgstar nanosatellite is presented. The Dawgstar is a 13 kg satellite designed as a part of the University Nanosatellite Program funded by AFOSR, DARPA, AFRL, and NASA. The goal of this two-year program is to design, build, and fly nanosatellites. The mission overview is detailed, including the coupling with the University partners Utah State and Virginia Tech in the Ionospheric Observation Nanosatellite Formation (ION-F). The mission includes several formations and formation keeping experiments, and distributed ionospheric measurements. Each of the subsystems is also detailed, including the design and integration of eight miniature pulsed plasma …
University Nanosatellite Distributed Satelllite Capabilities To Support Techsat 21, Kim Luu, Maurice Martin, Mike Stallard, Howard Schlossberg, Joe Mitola, Dave Weidow, Richard Blomquist, Mark Campbell, Christopher Hall, Elaine Hansen, Stephen Horan, Chris Kitts, Frank Redd, Helen Reed, Harlan Spence, Bob Twiggs
University Nanosatellite Distributed Satelllite Capabilities To Support Techsat 21, Kim Luu, Maurice Martin, Mike Stallard, Howard Schlossberg, Joe Mitola, Dave Weidow, Richard Blomquist, Mark Campbell, Christopher Hall, Elaine Hansen, Stephen Horan, Chris Kitts, Frank Redd, Helen Reed, Harlan Spence, Bob Twiggs
Small Satellite Conference
A new way to perform space missions utilizes the concept of clusters of satellites that cooperate to perform the function of a larger, single satellite. Each smaller satellite communicates with the others and shares the processing, communications, and payload or mission functions. The required functionality is thus spread across the satellites in the cluster, the aggregate forming a "virtual satellite". The Air Force Research Laboratory (AFRL) initiated the TechSat 21 program to explore the basic technologies required to enable such distributed satellite systems. For this purpose, Space Based Radar (SBR) was selected as a reference mission to help identify technology …
Virginia Tech Ionospheric Scintillation Measurement Mission, Christopher Hall, Nathaniel Davis, Jaime Delaree, Wayne Scales, Warren Stutzman
Virginia Tech Ionospheric Scintillation Measurement Mission, Christopher Hall, Nathaniel Davis, Jaime Delaree, Wayne Scales, Warren Stutzman
Small Satellite Conference
The Virginia Tech Ionospheric Scintillation Measurement Mission (VTISMM) is a small spacecraft design, build, and fly project being funded by the Air Force Research Laboratory, the Defense Advanced Research Projects Agency, and NASA's Goddard Space Flight Center. The mission concept includes one 10 kg spacecraft that will fly in formation with two similar satellites being built by students at Utah State University and the University of Washington. The three satellites will fly in close proximity, using GPS receivers for position determination, microsensors for attitude determination, interlink communications for data transmission and relative position determination, microthrusters and differential drag for formation-keeping, …
Knowledge Server Toolkit: Perl-Based Automation Tools , David Mclean
Knowledge Server Toolkit: Perl-Based Automation Tools , David Mclean
Small Satellite Conference
A Perl Inference Engine (PIE), A Plan Executor (APE), and a Centroid Classifier (CCL) are described within the infrastructure provided by the Knowledge Server Toolkit (KST) environment. All these tools are implemented as Perl modules so that user's applications can easily use their capabilities. This technology was developed at NASA Goddard Space Flight Center under a task that was looking into languages and tools that are useful for automating satellite ground control systems. However, because these tools are modularized and knowledge driven, this technology should be generally applicable to many fields. After a background description, the Knowledge Representation (KR) and …
Optical Tracking Telemetry And Commanding (Tt&C) For Small Satellites , Michael Enoch, Sabrina Herrin, Lt. Col. Roberta Ewart, Dennis Mansell
Optical Tracking Telemetry And Commanding (Tt&C) For Small Satellites , Michael Enoch, Sabrina Herrin, Lt. Col. Roberta Ewart, Dennis Mansell
Small Satellite Conference
This paper presents information on the current state of technology and potential subsystem and operational concepts to allow the use of low power optical communication systems to perform tracking, telemetry and commanding (IT &C) for small satellites. The mantra of 'smaller, faster, better (& cheaper)' has been realized, at least partially, for many aspects of small satellite design, construction and operations. Most small spacecraft systems have become smaller, lighter and more power efficient while offering greater performance. Unfortunately, one area that has not followed this general trend is IT &C. In many ways, this situation takes on greater significance due …
Evaluating Small Satellites: Is The Risk Worth It?, Todd Mosher, Robert Bitten, Norman Lao, Eric Mahr, Riaz Musani
Evaluating Small Satellites: Is The Risk Worth It?, Todd Mosher, Robert Bitten, Norman Lao, Eric Mahr, Riaz Musani
Small Satellite Conference
"Faster, Better, Cheaper - pick any two" say critics of NASA's current approach to scientific satellites. As proof, they point to the recent failed or impaired small science satellites: Lewis (failed shortly after reaching orbit), Clark (cancelled before leaving the ground), NEAR (trajectory altered due to engine shutdown) and WIRE (failure resulting in depletion of cryogen). Although the space industry has greatly increased their utilization of small satellites to conduct space activities, the question remains, Is Faster, Better, Cheaper (FBC) yielding a good return on investment? This paper takes a historical look at traditional science missions either flown or started …
Solar Terrestrial Relations Observatory (Stereo) Mission And Concept Of Operations, Glen Baer, John Eichstedt, Daniel Ossing
Solar Terrestrial Relations Observatory (Stereo) Mission And Concept Of Operations, Glen Baer, John Eichstedt, Daniel Ossing
Small Satellite Conference
The Solar Terrestrial Relations Observatory (STEREO) is a new NASA mission designed to increase the understanding of the origin and consequences of coronal mass ejections (CMEs). The mission will consist of two identical spacecraft at approximately lAU from the Sun: one drifting ahead of the Earth and one behind. Simultaneous image pairs will be obtained by the spacecraft at gradually increasing angular separations over the course of the 2-year mission. The spacecraft launch date is scheduled for 2003. The concept of operations for this mission consists of independent and decoupled instrument and spacecraft bus operations. The Science Operations Teams will …
Sunsat - Launch And First Six Month's Orbital Performance, Garth Milne, A. Schoonwinkel, J.J. Du Plessis, S. Mostert, W.H. Steyn, K Vd Westhuizen, D.A. Vd Merwe, H. Grobler, J.A. Koekemoer, N. Steenkamp
Sunsat - Launch And First Six Month's Orbital Performance, Garth Milne, A. Schoonwinkel, J.J. Du Plessis, S. Mostert, W.H. Steyn, K Vd Westhuizen, D.A. Vd Merwe, H. Grobler, J.A. Koekemoer, N. Steenkamp
Small Satellite Conference
South Africa's first satellite, SUNSAT, has been operating in orbit since a NASA-sponsored launch on the USA Air Force P91-1 Argos Delta II mission on February 23, 1999. SUNSAT is a graduate studentdeveloped satellite from the University of Stellenbosch in South Africa, and includes a NASA GPS receiver for occultation research, laser reflectors, magnetometers, star cameras, Amateur Radio communications, and a 15-m resolution, 3456 pixel, 3-band, stereo-capable push broom imager. SUNSAT is controlled from the University, and most functions were operating in June 1999. Live PAL TV earth images are received well at Stellenbosch on a 4.5 m diameter antenna, …
Mightysat I: In Space, Capt. Barbara Braun, Robert Davis, Thomas Itchkawich, Todd Goforth
Mightysat I: In Space, Capt. Barbara Braun, Robert Davis, Thomas Itchkawich, Todd Goforth
Small Satellite Conference
MightySat is a United States Air Force (USAF) Research Laboratory multi-mission, small satellite program dedicated to providing frequent, inexpensive, on-orbit demonstrations of high-payoff space system technologies. MightySat I, the 140lb pathfmder satellite of the MightySat series, was ejected from the Space Shuttle Endeavor on the 15th of December, 1998. Contact with the satellite was established one hour after ejection, and MightySat I has been performing robustly on-orbit ever since. This paper provides an overview of the MightySat I satellite and its experiments: a lightweight composite structure, high-efficiency solar panels, low-power microelectronics, low-shock release devices, and micro-particle impact detectors. The design, …
The Daily Egyptian, August 23, 1999, Daily Egyptian Staff
The Daily Egyptian, August 23, 1999, Daily Egyptian Staff
August 1999
No abstract provided.
08/23/1999 Obituary Records, Hawaii Obituaries
08/23/1999 Obituary Records, Hawaii Obituaries
Obituaries
List of Obituaries for individuals who passed away on 08/23/1999. Scroll down to see the names and obituary description.
The Murray Ledger And Times, August 23, 1999, The Murray Ledger And Times
The Murray Ledger And Times, August 23, 1999, The Murray Ledger And Times
The Murray Ledger & Times
No abstract provided.
Daily Eastern News: August 23, 1999, Eastern Illinois University
Daily Eastern News: August 23, 1999, Eastern Illinois University
August
No abstract provided.
Phosphoinositide-Ap-2 Interactions Required For Targeting To Plasma Membrane Clathrin-Coated Pits., I Gaidarov, James H. Keen
Phosphoinositide-Ap-2 Interactions Required For Targeting To Plasma Membrane Clathrin-Coated Pits., I Gaidarov, James H. Keen
Department of Microbiology and Immunology Faculty Papers
The clathrin-associated AP-2 adaptor protein is a major polyphosphoinositide-binding protein in mammalian cells. A high affinity binding site has previously been localized to the NH(2)-terminal region of the AP-2 alpha subunit (Gaidarov et al. 1996. J. Biol. Chem. 271:20922-20929). Here we used deletion and site- directed mutagenesis to determine that alpha residues 21-80 comprise a discrete folding and inositide-binding domain. Further, positively charged residues located within this region are involved in binding, with a lysine triad at positions 55-57 particularly critical. Mutant peptides and protein in which these residues were changed to glutamine retained wild-type structural and functional characteristics by …
Crow's Nest, August 23, 1999, Crow's Nest Staff
Crow's Nest, August 23, 1999, Crow's Nest Staff
Crow's Nest
The August 23, 1999, issue of the Crow's Nest.
Insulin-Like Growth Factor Ii Signaling In Neoplastic Proliferation Is Blocked By Transgenic Expression Of The Metalloproteinase Inhibitor Timp-1, David C. Martin, John L. Fowlkes, Bojana Babic, Rama Khokha
Insulin-Like Growth Factor Ii Signaling In Neoplastic Proliferation Is Blocked By Transgenic Expression Of The Metalloproteinase Inhibitor Timp-1, David C. Martin, John L. Fowlkes, Bojana Babic, Rama Khokha
Pediatrics Faculty Publications
Insulin-like growth factor (IGF) II is overexpressed in many human cancers and is reactivated by, and crucial for viral oncogene (SV40 T antigen, [TAg])-induced tumorigenesis in several tumor models. Using a double transgenic murine hepatic tumor model, we demonstrate that tissue inhibitor of metalloproteinase 1 (TIMP-1) blocks liver hyperplasia during tumor development, despite TAg-mediated reactivation of IGF-II. Because the activity of IGFs is controlled by IGF-binding proteins (IGFBPs), we investigated whether TIMP-1 overexpression altered the IGFBP status in the transgenic liver. Ligand blotting showed that IGFBP-3 protein levels were increased in TIMP-1-overexpressing double transgenic littermates, whereas IGFBP-3 mRNA levels were …
Ada News - 08/23/1999, American Dental Association, Publishing Division
Ada News - 08/23/1999, American Dental Association, Publishing Division
ADA News
Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.
University Nanosatellite Distributed Satellite Capabilities To Support Techsat 21, Robert J. Twiggs
University Nanosatellite Distributed Satellite Capabilities To Support Techsat 21, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A published article that included Professor Bob Twiggs titled "University Nanosatellite Distributed Satellite Capabilities to Support TechSat 21" from August 23, 1999.
Monitor Newsletter August 23, 1999, Bowling Green State University
Monitor Newsletter August 23, 1999, Bowling Green State University
Monitor
Official Publication of Bowling Green State University for Faculty and Staff
Counselor, Orientation Issue, August 23, 1999, New York Law School
Counselor, Orientation Issue, August 23, 1999, New York Law School
New York Law School Community Newsletter
No abstract provided.
Deafdigest Gold: Vol. 4, No. 3 August 22, 1999, Barry Strassler
Deafdigest Gold: Vol. 4, No. 3 August 22, 1999, Barry Strassler
DeafDigest Gold 1999
No abstract provided.
Deafdigest Blue: Vol. 4, No. 3 August 22, 1999, Barry Strassler
Deafdigest Blue: Vol. 4, No. 3 August 22, 1999, Barry Strassler
DeafDigest Blue 1999
No abstract provided.
August 21, 1999 (Pages 4415-4524), Pennsylvania Legislative Reference Bureau
August 21, 1999 (Pages 4415-4524), Pennsylvania Legislative Reference Bureau
Volume 29 (1999)
No abstract provided.
The Murray Ledger And Times, August 21, 1999, The Murray Ledger And Times
The Murray Ledger And Times, August 21, 1999, The Murray Ledger And Times
The Murray Ledger & Times
No abstract provided.
The Weekly Challenger, August 21, 1999, The Weekly Challenger, Et Al
The Weekly Challenger, August 21, 1999, The Weekly Challenger, Et Al
Weekly Challenger Newspaper Collection
The August 21, 1999, issue of The Weekly Challenger.
The Bg News August 21, 1999, Bowling Green State University
The Bg News August 21, 1999, Bowling Green State University
BG News (Student Newspaper)
The BGSU campus student newspaper. August 21, 1999. Volume 84-Issue 1.
Inside Usf, August 20 - September 2, 1999, University Of South Florida. Office Of Public Affairs
Inside Usf, August 20 - September 2, 1999, University Of South Florida. Office Of Public Affairs
Inside USF
The August 20 - September 2, 1999, issue of Inside USF.