1,210 research outputs found
Unfolding the moon: enacting women's kastom in Vanuatu
No full textPT: J; CR: BOLTON L, 2003, UNFOLDING MOON ENACT; NR: 1; TC: 0; J9: CONTEMP PACIFIC; PG: 3; GA: 775ZESource type: Electronic(1
Life and loves of a landscape artist: biography of Gordon Crossley
No full textAt the time of publishing this book Gordon Crossley is 86 years young and still painting the great outdoors; especially wonderful skies from his studio and incredible trees at his beloved Hatfield Forest.
Gordon studied at Wimbledon College of Art; exhibited 16 times at the Royal Academy; was employed as an artist in the RAF; worked as Group Art Director in the advertising industry and taught art and graphics at Barking College in Essex.
Two of his paintings are exhibited at the Chelmsford & Essex Museum; and this book contains over 60 examples of his works spanning some 60 plus years. Gordon has four children and eight grandchildren; but sadly his wife Jo and very recently his son Matthew both died prematurely; and this book is dedicated to their memory.
Gordon met the author of this biography at High Roding Tea Rooms and they have formed a dear friendship ever since.
The book is written as a testimony to how one artist has spent his life revealing God’s creation in his work; and his love for his family and friends, church and community.
All proceeds from the book will go to help a disadvantaged youngster, with promise, to attend art college; to ‘learn how to draw properly’ Gordon would say
Reframing Assessment of Grantee Perceptions: Reconsidering Effectiveness With Broader International Stakeholder Engagement
No full text· Stakeholder engagement is important in philanthropy because it allows grantmakers and grantees to pool their respective resources more effectively to address their shared target issues.
· As more and more foundations and other grantmaking entities venture into the expansive world of self-evaluation, it is prudent that these methods be examined in light of international funding relationships.
· In order to better understand how these tools and methods can be used internationally, we outline the opportunities presented when using frames as one basis for decision-making in complex situations.
· Using the hypothetical case of a U.S. funder seeking to understand grantee perception in East Africa, we present a matrix of considerations and questions that allow grantmakers to account for the local reality of grantee perceptions.
· By actively engaging all stakeholders involved in the process, international grantmakers can begin to adapt these tools to meet their cross-cultural needs, while limiting bias and unexamined counterproductive assumptions
Joint annual meeting of Lunar Exploration Analysis Group-International Conference on Exploration and Utilization of the Moon-Space Resources Roundtable.
No full textThis CD-ROM contains the contents, program, abstracts, and author indexes for the Joint Annual Meeting of LEAG-ICEUM-SRR.sponsored by Lunar and Planetary Institute ... [and others]Conveners: Clive Neal, University of Notre Dame, Steve Mackwell, Lunar and Planetary Institute, Bernard Foing, European Space Agency, International Lunar Exploration Working Group, Leslie Gertsch, Missouri University of Science and Technology.PARTIAL CONTENTS: Plans for Involving the Commercial Sector in Space Exploration / K. Davidian--Models for the Lunar Radiation Environment / G. De Angelis, F. F. Badavi, S. R. Blattnig, J. M. Clem, M. S. Clowdsley, R. K. Tripathi, and J. W. Wilson--High Resolution Maps of the Moon Surface with AMIE/SMART-1 / D. Despan, S. Erard, A. Barucci, J.-L. Josset, S. Beauvivre, S. Chevrel, P. Pinet, D. Koschny, M. Almeida, B. Grieger, B. H. Foing, and AMIE Team--Contract Incentives for an Open Architecture International Lunar Network Including Google Lunar X-Prize / D. A. Dunlop--International Lunar Observatory Association (ILOA): 3 Mission Update — ILO-X Precursor, ILO-1 Polar, ILO Human Service Mission / S. Durst--What Astrobiology Investigations are Needed and Possible on the Moon? / P. Ehrenfreund and B. H. Foing--Lunar Crater Observation and Sensing Satellite (LCROSS) Science Payload Ground Development, Test, and Calibration / K. Ennico, A. Colaprete, J. Heldmann, G. Kojima, D. Lynch, M. Shirley, and D. Wooden--Geologic Preparation for Exploring the Moon and Planets: Using the Past as a Key to the Present / D. B. Eppler--Report from ILEWG on Science and Exploration Questions / B. H. Foing and the International Lunar Exploration Working Group--Improving Lunar Surface Science with Robotic Recon / T. Fong, M. Deans, P. Lee, J. Heldmann, D. Kring, E. Heggy, and R. Landis--Lunar Beagle: A Science Package for Measuring Polar Ice and Volatiles on the Moon / E. K. Gibson, C. T. Pillinger, D. S. McKay, I. P. Wright, M. R. Sims, L. Richter, L. Waugh, and Lunar Beagle Consortium
MOA-2011-BLG-262Lb : a sub-earth-mass moon orbiting a gas giant primary or a high velocity planetary system in the galactic bulge
No full textD.P.B. was supported by grants NASA-NNX12AF54G, JPL-RSA 1453175 and NSF AST-1211875. This MOA project is supported by the grants JSPS18253002 and JSPS20340052. T.S. acknowledges the financial support from the JSPS, JSPS23340044, JSPS24253004. This work was partially supported by a NASA Keck PI Data Award, administered by the NASA Exoplanet Science Institute. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. B.S.G. and A.G. were supported by NSF grant AST 110347. B.S.G., A.G., R.P.G. were supported by NASA grant NNX12AB99G. S.D. was partly supported through a Ralph E. and Doris M. Hansmann Membership at the IAS and by NSF grant AST-0807444. Work by J.C.Y. was performed in part under contract with the California Institute of Technology (Caltech) funded by NASA through the Sagan Fellowship Program. The OGLE project has received funding from the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement No. 246678 to A.U. D.H. was supported by Czech Science Foundation grant GACR P209/10/1318. D.M.B., M.D., K.H., C.S., R.A.S., M.H. and Y.T. are supported by NPRP grant NPRP-09-476-1-78 from the Qatar National Research Fund (a member of the Qatar Foundation).We present the first microlensing candidate for a free-floating exoplanet-exomoon system, MOA-2011-BLG-262, with a primary lens mass of M host ~ 4 Jupiter masses hosting a sub-Earth mass moon. The argument for an exomoon hinges on the system being relatively close to the Sun. The data constrain the product MLπrel where ML is the lens system mass and πrel is the lens-source relative parallax. If the lens system is nearby (large πrel), then ML is small (a few Jupiter masses) and the companion is a sub-Earth-mass exomoon. The best-fit solution has a large lens-source relative proper motion, μrel = 19.6 ± 1.6 mas yr–1, which would rule out a distant lens system unless the source star has an unusually high proper motion. However, data from the OGLE collaboration nearly rule out a high source proper motion, so the exoplanet+exomoon model is the favored interpretation for the best fit model. However, there is an alternate solution that has a lower proper motion and fits the data almost as well. This solution is compatible with a distant (so stellar) host. A Bayesian analysis does not favor the exoplanet+exomoon interpretation, so Occam's razor favors a lens system in the bulge with host and companion masses of M host = 0.12 +0.19-0.06 MΘ and mcomp = 18+28-10M⊕, at a projected separation of a⊥ = 0.84+0.25−0.14 AU. The existence of this degeneracy is an unlucky accident, so current microlensing experiments are in principle sensitive to exomoons. In some circumstances, it will be possible to definitively establish the mass of such lens systems through the microlensing parallax effect. Future experiments will be sensitive to less extreme exomoons.Peer reviewe
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Collision chains among the terrestrial planets. III. formation of the moon
No full textIn the canonical model of Moon formation, a Mars-sized protoplanet “Theia” collides with proto-Earth at close to their mutual escape velocity vesc and a common impact angle ∼45°. The “graze-and-merge” collision strands a fraction of Theia’s mantle into orbit, while Earth accretes most of Theia and its momentum. Simulations show that this produces a hot, high angular momentum, silicate-dominated protolunar system, in substantial agreement with lunar geology, geochemistry, and dynamics. However, a Moon that derives mostly from Theia’s mantle, as angular momentum dictates, is challenged by the fact that O, Ti, Cr, radiogenic W, and other elements are indistinguishable in Earth and lunar rocks. Moreover, the model requires an improbably low initial velocity. Here we develop a scenario for Moon formation that begins with a somewhat faster collision, when proto-Theia impacts proto-Earth at ∼ 1.2vesc, also around ∼45°. Instead of merging, the bodies come into violent contact for a half hour and their major components escape, a “hit-and-run” collision. N-body evolutions show that the “runner” often returns ∼0.1–1 Myr later for a second giant impact, closer to vesc; this produces a postimpact disk of ∼2–3 lunar masses in smoothed particle hydrodynamics simulations, with angular momentum comparable to canonical scenarios. The disk ends up substantially inclined, in most cases, because the terminal collision is randomly oriented to the first. Moreover, proto-Earth contributions to the protolunar disk are enhanced by the compounded mixing and greater energy of a collision chain. © 2021. The Author(s). Published by the American Astronomical Society.Open access journalThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]
Oblique impact cratering experiments in brittle targets: Implications for elliptical craters on the Moon
No full textMost impact craters observed on planetary bodies are the results of oblique impacts of meteoroids. To date, however, there have only been very few laboratory oblique impact experiments for analogue targets relevant to the surfaces of extraterrestrial bodies. In particular, there is a lack of laboratory oblique impact experiments into brittle targets with a material strength on the order of 1 MPa, with the exception of ice. A strength on the order of 1 MPa is considered to be the corresponding material strength for the formation of craters in the 100 m size range on the Moon. Impact craters are elliptical if the meteoroid's trajectory is below a certain threshold angle of incidence, and it is known that the threshold angle depends largely on the material strength. Therefore, we examined the threshold angle required to produce elliptical craters in laboratory impact experiments into brittle targets. This work aims to constrain current interpretations of lunar elliptical craters and pit craters with sizes below a hundred meters. We produced mortar targets with compressive strength of 3.2 MPa. A spherical nylon projectile (diameter 7.14 mm) was shot into the target surface at a nominal velocity of 2.3 km/s, with an impact angle of 5°‐90° from horizontal. The threshold angle of this experiment ranges from 15° to 20°. We confirmed that our experimental data agree with previous empirical equations in terms of the cratering efficiency and the threshold impact angle. In addition, in order to simulate the relatively large lunar pit craters related to underground cavities, we conducted a second series of experiments under similar impact conditions using targets with an underground rectangular cavity. Size and outline of craters that created a hole are similar to those of craters without a hole. Moreover, when observed from an oblique angle, a crater with a hole has a topography that resembles the lunar pit craters. The relation between the impact velocity of meteoroids on the Moon and the probability of elliptical crater formation was investigated based on our experimental results and an existing empirical equation. The results suggest a distinct possibility that most craters in the 100 m size range on the Moon, given their elliptical shape, originated as secondary craters. © 2016 The Author
Justice as Social Cooperation
No full textThe University Archives has determined that this item is of continuing value to OSU's history.The media can be accessed here: http://streaming.osu.edu/knowledgebank/mershon08/moon.mp3J. Donald Moon is the John E. Andrus Professor of Government
and Chair of the College of Social Studies at Wesleyan University.
He is the author of dozens of articles in political theory and the
philosophy of the social sciences as well as the influential book
Constructing Community: Moral Pluralism and Tragic Conflicts .
Most recently, he is co-editor of the book What Is Political
Theory?Ohio State University. Mershon Center for International Security StudiesEvent webpag
Isotopic evidence for the formation of the moon in a canonical giant impact
No full text© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nielsen, S. G., Bekaert, D. V., & Auro, M. Isotopic evidence for the formation of the moon in a canonical giant impact. Nature Communications, 12(1), (2021): 1817, https://doi.org/10.1038/s41467-021-22155-7.Isotopic measurements of lunar and terrestrial rocks have revealed that, unlike any other body in the solar system, the Moon is indistinguishable from the Earth for nearly every isotopic system. This observation, however, contradicts predictions by the standard model for the origin of the Moon, the canonical giant impact. Here we show that the vanadium isotopic composition of the Moon is offset from that of the bulk silicate Earth by 0.18 ± 0.04 parts per thousand towards the chondritic value. This offset most likely results from isotope fractionation on proto-Earth during the main stage of terrestrial core formation (pre-giant impact), followed by a canonical giant impact where ~80% of the Moon originates from the impactor of chondritic composition. Our data refute the possibility of post-giant impact equilibration between the Earth and Moon, and implies that the impactor and proto-Earth mainly accreted from a common isotopic reservoir in the inner solar system.This study was funded by NASA Emerging Worlds grant NNX16AD36G to S.G.N. We thank NASA-JSC, Tony Irving, and Thorsten Kleine for access to meteorite and Apollo mission samples. US Antarctic meteorite samples are recovered by the Antarctic Search for Meteorites (ANSMET) program, which has been funded by NSF and NASA, and characterized and curated by the Astromaterials Curation Office at NASA Johnson Space Center and the Department of Mineral Sciences of the Smithsonian Institution. J. Blusztajn is thanked for help with mass spectrometry support at WHOI
Forty-first Lunar and Planetary Science Conference
No full textSpecial sessions were: A New Moon: Lunar Reconnaissance Orbiter Results ; Water in the Solar System: Incorporation into Primitive Bodies and Evolution ; A New Moon: LCROSS, Chandrayaan, and Chang-E-1 ; Water in the Solar System: Moon ; A New Moon: Spectral Constraints on Lunar Crustal Composition ; Characterizing Near-Earth Objects ; A New Moon: Lunar Volcanism and Impact. This CD-ROM contains the contents, program, abstracts, and author indexes for the 41st Lunar and Planetary Science Conference.by Lunar and Planetary Institute, NASA Johnson Space Centerconference co-chairs, Stephen Mackwell, Lunar and Planetary Institute [and] Eileen Stansbery, NASA Johnson Space Center.PARTIAL CONTENTS: Roughness and Radar Polarimetry of Lunar Polar Craters: Testing for Ice Deposits / B.J. Thomson, P.D. Spudis, D.B.J. Bussey, L. Carter, R.L. Kirk, C. Neish, G. Patterson, R.K. Raney, H. Winters, and the Mini-RF Team--Formation of Jupiter's Atmosphere from a Supernova-Contaminated Molecular Cloud / H.B. Throop--Ancient Lunar Dynamo: Absence of Evidence is Not the Evidence of Absence / S.M. Tikoo, B.P. Weiss, J. Buz, I. Garrick-Bethell, T.L. Grove, and J. Gattaccaea--Dark Dunes in Ka'u Desert (Hawaii) as Terrestrial Analogs to Dark Dunes on Mars / D. Tirsch, R.A. Craddock, and R. Jaumann--Mars Ice Condensation and Density Orbiter / T.N. Titus, T. Prettyman, A. Brown, T.I. Michaels, and A. Colaprete--The Atacama Desert Cave Shredder: A Case for Conduction Thermodynamics / T.N. Titus, J.J. Wynne, D. Ruby, and N. Cabrol
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