Future space transportation system architecture avionics requirements

NASA began a multi-center study in January 1993 to examine options for providing the most cost effective space transportation system in the future. The key advanced avionics requirements for these vehicle concepts are envisioned to provide significantly improved operational efficiency and effectiveness. It is very desirable to have adaptive guidance, navigation, and control approaches that will allow launch and return in almost any weather condition. The vehicles must be able to accommodate atmospheric density variations and winds without software changes. The flight operations must become much more autonomous in all flight regimes like an aircraft, and preflight checkout should make use of the onboard systems. When the vehicle returns to the launch site, subsystem health must be known and maintenance tasks scheduled accordingly. Ground testing of most subsystems must be eliminated. Also, the health monitoring system must be designed to enhance the ability to abort the mission significantly and save the crew and the vehicle. The displays and controls must be much less complex than current systems and must significantly reduce pilot work load. It is important to have low power, light weight displays and controls. Rendezvous and docking and all flight phases must have autopilot capability to reduce pilot work load for routine operations and in abort situations. The vehicles must have the demonstrated ability to return to the launch site. Abort from all mission phases can put additional demands on the communications system

Colorado Native Plant Society Newsletter, Vol. 3 No. 5-6, September-December 1979

The Colorado Native Plant Society Newsletter will be published on a bimonthly basis. The contents will consist primarily of a calendar of events, notes of interest, editorials, listings of new members and conservation news. Until there is a Society journal, the Newsletter will include short articles also. The deadline for the Newsletter is one month prior to its release.https://epublications.regis.edu/aquilegia/1016/thumbnail.jp

The Vehicle, Spring 1993

Table of Contents The Shape of Things to Come.Peter F. Essigpage 6 SaxophoneWalt Howardpage 6 Gravity BedSue Songerpage 7 UntitledJennifer Gutowskipage 8 uncertaintyWalt Howardpage 9 Ruth Ann, et. al.Susan Eisenhourpage 9 Failed IndustryScott Langenpage 10 UntitledKaren Wisspage 10 wanted:Walt Howardpage 10 Dida; 1978Diana Matijaspage 11 UntitledJennifer Gutowskipage 12 The Lesson in NovemberSue Songerpage 13 Coal MinerJames P. Tangpage 16 Christmas CrueltySue Songerpage 17 Astral ProjectionSusan Eisenhourpage 18 UntitledBen Hausmannpage 19 Into Zagreb\u27s Evening*Diana Matjaspage 20 UntitledJennifer Gutowskipage 22 The AnniversaryJennifer Moropage 23 NudeDan Trutterpage 24 death for saleWalt Howardpage 24 JudgedKevin St. Angelpage 25 Nature\u27s RefugeeScott Langenpage 25 Arrowhead Hunting at TippecanoeJennifer Moropage 26 UntitledKimberly Foxpage 27 TAINTED LOVESarah C. Patiencepage 28 cemeteryWalt Howardpage 28 Cow GameSusan Eisenhourpage 29 UntitledJennifer Gutowskipage 31 ReflectionsPeter F. Essigpage 32 Destination U.S.A.Dan Trutterpage 33 UntitledMario Letopage 33 Authors\u27 Pagepage 34https://thekeep.eiu.edu/vehicle/1061/thumbnail.jp

The Vehicle, Spring 1993

Table of Contents The Shape of Things to Come.Peter F. Essigpage 6 SaxophoneWalt Howardpage 6 Gravity BedSue Songerpage 7 UntitledJennifer Gutowskipage 8 uncertaintyWalt Howardpage 9 Ruth Ann, et. al.Susan Eisenhourpage 9 Failed IndustryScott Langenpage 10 UntitledKaren Wisspage 10 wanted:Walt Howardpage 10 Dida; 1978Diana Matijaspage 11 UntitledJennifer Gutowskipage 12 The Lesson in NovemberSue Songerpage 13 Coal MinerJames P. Tangpage 16 Christmas CrueltySue Songerpage 17 Astral ProjectionSusan Eisenhourpage 18 UntitledBen Hausmannpage 19 Into Zagreb\u27s Evening*Diana Matjaspage 20 UntitledJennifer Gutowskipage 22 The AnniversaryJennifer Moropage 23 NudeDan Trutterpage 24 death for saleWalt Howardpage 24 JudgedKevin St. Angelpage 25 Nature\u27s RefugeeScott Langenpage 25 Arrowhead Hunting at TippecanoeJennifer Moropage 26 UntitledKimberly Foxpage 27 TAINTED LOVESarah C. Patiencepage 28 cemeteryWalt Howardpage 28 Cow GameSusan Eisenhourpage 29 UntitledJennifer Gutowskipage 31 ReflectionsPeter F. Essigpage 32 Destination U.S.A.Dan Trutterpage 33 UntitledMario Letopage 33 Authors\u27 Pagepage 34https://thekeep.eiu.edu/vehicle/1061/thumbnail.jp

The Vehicle, Fall 1994

Table of Contents Poetry Noah\u27s WifeJennifer Moropage 8-9 The Intensity of a BreathHeather Anne Winterspage 10-11 When I Was RainNicole Moonpage 11 Wreckage at Low Tide, After a Storm On Cape FearMatt Parkspage 12-14 two belowKeith Spearpage 16 HeatScott Langrenpage 17 Plastic Shard WordsMatthew J. Nelsonpage 18 Mr. Snowplow ManMartin Paul Brittpage 19 Carpe DiemMichael Lairpage 19 untitledWalt Howardpage 20 The GameKellie J. Olsenpage 21 AT PEACEJennifer Surmanpage 22 SawdustSue Songerpage 23 Photography Unbound RealitiesKris Quiriconipage 26 untitled Mark Porter page 27 untitled Mark Porter page 28 untitled Mark Porter page 29 Prose I am Here...RememberingJ. Dylan McNeillpage 32-34 RecognitionSue Songerpage 35-36 SACCADICSteve Beinpage 37-40 The BurnBryan Levekpage 41-45 Biographiespage 46-48https://thekeep.eiu.edu/vehicle/1063/thumbnail.jp

The Vehicle, Fall 1994

Table of Contents Poetry Noah\u27s WifeJennifer Moropage 8-9 The Intensity of a BreathHeather Anne Winterspage 10-11 When I Was RainNicole Moonpage 11 Wreckage at Low Tide, After a Storm On Cape FearMatt Parkspage 12-14 two belowKeith Spearpage 16 HeatScott Langrenpage 17 Plastic Shard WordsMatthew J. Nelsonpage 18 Mr. Snowplow ManMartin Paul Brittpage 19 Carpe DiemMichael Lairpage 19 untitledWalt Howardpage 20 The GameKellie J. Olsenpage 21 AT PEACEJennifer Surmanpage 22 SawdustSue Songerpage 23 Photography Unbound RealitiesKris Quiriconipage 26 untitled Mark Porter page 27 untitled Mark Porter page 28 untitled Mark Porter page 29 Prose I am Here...RememberingJ. Dylan McNeillpage 32-34 RecognitionSue Songerpage 35-36 SACCADICSteve Beinpage 37-40 The BurnBryan Levekpage 41-45 Biographiespage 46-48https://thekeep.eiu.edu/vehicle/1063/thumbnail.jp

The Vehicle, Fall 1992

Table of Contents DeconstructivismPeter F. Essigpage 5 Homecoming Pep RallyPeter F. Essigpage 6 McAfee GymnasiumWalt Howardpage 7 Morton ParkAnn Moutraypage 9 Why The Willows WeepPeter F. Essigpage 10 UntitledStephen P. Carmodypage 10 A Stranger\u27s MorningBen Hausmannpage 11 deMONSTERative pronounsJoAnna Wolaverpage 12 2.5%Jill S. Pilonpage 13 The BottleStacey Kruegerpage 14 Suppression Jean K. Graypage 15 ProgressStacey Kruegerpage 16 Daily LessonsJennifer Moropage 17 Sunset TheaterMichelle R. Hokepage 20 Eagle GT\u27sJarrod T. Shieldspage 21 New HouseRandy Lisspage 22 UntitledStephen P. Carmodypage 23 Renting Classics on a Saturday NightNancy Jamespage 24 UntitledJacqueline Hallpage 25 Alone While He SleepsSandy Beauchamppage 26 Sand and SeaThomas Schnarrepage 27 loveMichelle R. Hokepage 28 Backward Ass Junkie FunkSandy Beauchamppage 28 These Things You KeepTom McGrathpage 29 Springhill CrestRobert M. Reutherpage 30 The Pass OverLarry Irvinpage 31 The Stolen ChildTom McGrathpage 32 Before the Recycling KickWalt Howardpage 37 Authors\u27 Pagepage 38https://thekeep.eiu.edu/vehicle/1058/thumbnail.jp

The Vehicle, Fall 1993

Table of Contents 7/10ths SynthesisPeter F. Essigpage 5 Aug 1992 (My Small Catechism)Jon Montgomerypage 6 Chaos Is-J. Dylan McNeillpage 7 UntouchedTraci Williamspage 8 The JustificationJohn C. Carminepage 8 LincolnJon Montgomerypage 9 Untitled (Photo)Nicole Niemanpage 10 Park PoemJohn Brillhartpage 11 SmokeJulia Ann Canhampage 12 Warming the BenchAnn Moutraypage 12 Cereal KillerJay Harnackpage 13 The Dutiful SonsTom McGrathpage 14 UntitledCatherine DeGraafpage 17 7-up bottleWalt Howardpage 17 BreedDan Trutterpage 18 An Argument Against LoveTony Martinezpage 19 UntitledT. Scott Laniganpage 19 Glassblowers BallStephanie Franzenpage 20 Portrait of a Young GirlJohn C. Carminepage 20 Untitled (artwork)Dan Trutterpage 21 Death of a FriendLizabeth Kulkapage 22 Submission BluesMartin Paul Brittpage 23 To the Fourteen Year Old SuicideScott Langenpage 23 The Flabby PilgrimTom McGrathpage 24 The Fall of ImmortalityBrian Wheelerpage 25 Merging with AirThom Schnarrepage 26 UntitledCatherine DeGraafpage 27 Tree FishSandra Beauchamppage 28 Country SlumberJ. Dylan McNeillpage 29 Untitled (artwork)Dan Trutterpage 33 Authors\u27 Pagepage 34https://thekeep.eiu.edu/vehicle/1060/thumbnail.jp

Phylogeography and Genetic Ancestry of Tigers (Panthera tigris)

Eight traditional subspecies of tiger (Panthera tigris), of which three recently became extinct, are commonly recognized on the basis of geographic isolation and morphological characteristics. To investigate the species' evolutionary history and to establish objective methods for subspecies recognition, voucher specimens of blood, skin, hair, and/or skin biopsies from 134 tigers with verified geographic origins or heritage across the whole distribution range were examined for three molecular markers: (1) 4.0 kb of mitochondrial DNA (mtDNA) sequence; (2) allele variation in the nuclear major histocompatibility complex class II DRB gene; and (3) composite nuclear microsatellite genotypes based on 30 loci. Relatively low genetic variation with mtDNA, DRB, and microsatellite loci was found, but significant population subdivision was nonetheless apparent among five living subspecies. In addition, a distinct partition of the Indochinese subspecies P. t. corbetti into northern Indochinese and Malayan Peninsula populations was discovered. Population genetic structure would suggest recognition of six taxonomic units or subspecies: (1) Amur tiger P. t. altaica; (2) northern Indochinese tiger P. t. corbetti; (3) South China tiger P. t. amoyensis; (4) Malayan tiger P. t. jacksoni, named for the tiger conservationist Peter Jackson; (5) Sumatran tiger P. t. sumatrae; and (6) Bengal tiger P. t. tigris. The proposed South China tiger lineage is tentative due to limited sampling. The age of the most recent common ancestor for tiger mtDNA was estimated to be 72,000–108,000 y, relatively younger than some other Panthera species. A combination of population expansions, reduced gene flow, and genetic drift following the last genetic diminution, and the recent anthropogenic range contraction, have led to the distinct genetic partitions. These results provide an explicit basis for subspecies recognition and will lead to the improved management and conservation of these recently isolated but distinct geographic populations of tigers

Deep convection over Africa: annual cycle, ENSO, and trends in the hotspots

Africa is one of the three key regions of deep convection in the global tropics. There is a wealth of information on the intensity, variability and change of convection and associated rainfall in regions across the continent but almost all of this literature is regionally focused and confined to specific seasons. This fragmented approach precludes a continent-wide view of deep convection leaving the following key issues unanswered: When is deep convection the most wide-spread across Africa? Where on the continent is deep convection most active? Where does wide-spread convection have the most interannual variability? This paper confronts these questions using a satellite-derived integral of deep convection. At the continental scale, March exhibits the most extensive deep convection while the West African monsoon during June-July exhibits the least. El Niño generally suppresses pan-African convective activity while La Niña enhances this activity. These pan-African signals are largely determined by regional hotspots: the eastern Congo hosts the most persistent wide-spread deep convection, southeastern southern Africa displays the highest interannual variability, and regional highlands maintain local convective activity hotspots. Furthermore, pan-African annual mean convective activity has increase ∼10% between 1983 and 2015 with increases of >20% recorded in local hotspots. Results in this study provide a climatological baseline for both observational and model-based studies of African climates and offer insights into when African convection has the greatest potential impact on the general circulation