5,370 research outputs found
Dr. Jennifer Edmunson
No full textJennifer Edmunson earned her Ph.D. in Earth and Planetary Sciences at the University of New Mexico while studying the geology of the Moon and Mars. She came to Marshall Space Flight Center (MSFC) as a postdoc in 2008 and joined the Planetary Regolith Simulant Team as a contractor in 2009. She participated in the Manufacturing Innovation Project starting in 2010, which ultimately became In-Space Manufacturing (ISM). Following the ISM motto of “make it, don’t take it”, Jennifer began using her knowledge of lunar and martian geology to participate in, and grow, planetary in-situ resource utilization-based efforts at MSFC, including the Moon to Mars Planetary Autonomous Construction Technology (MMPACT) surface construction project. She became a civil servant in 2020 and is currently the MMPACT Project Manager.https://scholarlycommons.obu.edu/wstem_images/1037/thumbnail.jp
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Digital Frontiers' Social Media and Digital Communities Roundtable and Questions of Belonging
No full textThis response paper is for Dr. Jennifer Way's graduate art history seminar on 20th-21st century art. Students in Way's seminar attended 'Social Media and Digital Communities: A Roundtable Discussion,' a session featured at the Digital Frontiers 2012 conference. Way charged her students with writing a short paper to explore connections between the roundtable and their seminar studies. What follows is a short paper by graduate student, Marseille Moon
Letter to F.D. Moon from A. Mitchell Salone regarding information about and photos of the Colored School in Wewoka
No full textLetter to F.D. Moon regarding a book being written on African American schools. The author asks for photos of the school and shows appreciation for how he runs the school
We Reach the Moon. Title page inscribed by the author.
No full textOn 20 July 1969, Neil Armstrong and Buzz Aldrin became the first humans to land on the moon. The achievement inspired a host of products and memorabilia. On display from the publishing collection of Seymour Lawrence is both the German and American editions of the children’s 1969 picture book Journey to the Moon by artist Erich Fuchs who depicts the eight-day voyage with cubist modernism. The author of We Reach the Moon was the New York Times science reporter, and he inscribed his paperback to Mississippi writer Willie Morris and family.https://egrove.olemiss.edu/space_exhibit_2020/1012/thumbnail.jp
On lunar collision orbits: New methodologies for Moon-to-Moon transfer design
No full textMany interplanetary missions massively leverage the lunar gravitational pull in the so-called low-energy regime to converge to their aim, saving consistent amount of fuel. Among these, two future Japanese spacecraft are expected to repeatedly encounter the Moon along their trajectories to either facilitate the escape from the Earth–Moon system or opportunely target a specific region in its neighbourhood. Although never actively employed for preliminary trajectory design, lunar collision orbits have shown a rich dynamical structure and an applicability for both medium- and low-energy regimes. These characteristics, together with their intrinsic nature of being close to trajectories experiencing lunar fly-by, have encouraged this research. In this work, lunar collision orbits are employed to delineate a method for obtaining ballistic transfers between two successive lunar encounters, briefly addressed as Moon-to-Moon. This study is first carried out with the assumptions of the autonomous Circular Restricted Three-Body Problem, subsequently extended to the nonautonomous Bi-circular Restricted Four-Body Problem, including the solar gravitational influence.Poincaré cuts are extensively used as a dimensionality reductant for lunar collision orbits: this allows to ascertain their similar behaviour with trajectories flybying the Moon, whose characteristics are partly foreseen by determining the associated intersection with the same cut. A patching is performed at the cut to obtain both single and multiple ballistic Moon-to-Moon transfers. The strict bond of lunar collision orbits with the invariant manifolds of simple periodic orbits about Lagrangian points is confirmed and exploited to design ballistic itineraries connecting highly elliptic orbits about the Earth to horizontal Lyapunov orbits of the Earth–Moon system, via a single Moon-to-Moon transfer. With the usage of the lunar collision orbits and the Poincaré cut, a simple optimization technique is implemented to retrieve a properly defined Moon-to-Moon transfer from a trajectory missing a second fly-by with the Moon. Including the presence of the Sun, a similar method for obtaining single and multiple Moon-to-Moon transfers is developed. A classification of lunar double-collision transfers is then performed within the same framework, highlighting their similarity with other studies in past literature, eventually leading to the construction of a database of Moon-to-Moon transfers. The latter, conceived as an improvement with respect to the former version by adding the lunar gravitational influence, shows its applicability in real preliminary trajectory design.Aerospace Engineerin
Jennifer Christian Magill, Mezzo-Soprano
No full textCruda sorte!... Già so per pratica, from L’Italiana in Algeri / Gioachino Rossini; Chanson perpétuelle / Ernest Chausson; Nous avons en tête une affaire, from Carmen / Georges Bizet; Lieder eines fahrenden Gesellen / Gustav Mahler; Prologue: Once More - to Gloriana, from Songs to the Moon / Jake Heggie; Goodnight Moon / Eric Whitacr
Moon Dog [Translation]
No full textA Japanese to English translation of the poem Moon Dog originally written by Mizuho Ishid
New solar-sail orbits for polar observation of the earth and moon
No full textIn this paper, a new family of solar-sail periodic orbits with adequate properties for polar observation of the Earth and moon is developed under the simplified but nonautonomous dynamics of the solar-sail augmented Earth–moon circular restricted three-body problem. The novel orbits, termed “distant-circular orbits,” are found through differential correction and continuation and employ a simple sun-facing steering law for the solar sail. A basic coverage analysis shows that one of the distant-circular orbits is capable of providing continuous coverage of both the Earth’s and lunar north (or south) poles with just a single sailcraft at a minimum elevation angle of 14 deg and an average range of six Earth–moon distances. Moreover, simple transfer trajectories between orbits of the family are found, so that the sailcraft can switch between observing the northern and southern latitudes of the Earth and moon during a single mission. Subsequently, using multiple-shooting differential correction, all results are migrated to a higher-fidelity dynamic framework that considers, among others, the eccentricity of the moon’s orbit. The perturbations cause the periodicity of the orbits to break, turning them into seemingly quasi-periodic orbits, but it is shown that the coverage capabilities are maintained. Finally, an active control strategy is developed to counteract part of the perturbing effects such that, by appropriately steering the sail, the apparent quasi-periodicity of the orbits is enhanced and the deviation from the unperturbed orbits is reduced.Accepted Author ManuscriptAstrodynamics & Space Mission
Efficient and scalable provisioning of always-on multicast streaming services
No full textThere is a growing need for large-scale distribution of realtime multicast data such as Internet TV channels and scientific and financial data. Internet Service Providers (ISPs) face an urgent challenge in supporting these services; they need to design multicast routing paths that are reliable, cost-effective, and scalable. To meet the realtime constraint. the routing paths need to be robust against a single IP router or link failure, as well as multiple such failures due to sharing fiber spans (SRLGs). Several algorithms have been proposed to solve this problem in the past. However, they are not suitable for today's large networks, because either they do not find a feasible solution at all or if they do, they take a significant amount of time to arrive at high-quality solutions. In this paper, we present a new Integer Linear Programming (ILP) model for designing a cost-effective and robust multicast infrastructure. Our ILP model is extremely efficient and can be extended to produce quality-guaranteed network paths. We develop two heuristic algorithms for solving the ILP. Our algorithms can guarantee to find high-quality, feasible solutions even for very large networks. We evaluate the proposed algorithms using topologies of four operational backbones and demonstrate their scalability. We also compare the capital expenditure of the resulting multicast designs with existing approaches. The evaluation not only confirms the efficacy of our algorithms, but also shows that they outperform existing schemes significantly. (C) 2009 Elsevier B.V. All rights reserved.Sue Moon was supported by the IT R&D program of MKE/
IITA [A1100-0801-2758, ‘‘CASFI : High-Precision Measurement
and Analysis Research”]. W. Art Chaovalitwongse
was supported by the National Science Foundation under
CAREER Grant no. 0546574
Comics and Graphic Novels with Dr. Jarod Roselló
No full textJennifer Slagus and Josh Palange explore the world of comics and graphic novels with author Dr. Jarod Roselló. They highlight the value of graphic novels for young readers and discuss how these works are often perceived in comparison to traditional prose books. Dr. Roselló shares his journey as an author and cartoonist working with comics, emphasizing the scarcity of graphic novel-focused creative programs at the university level and the relationship between academia and comics. He also discusses his experience collaborating with publishers on his graphic novel series Red Panda & Moon Bear, and the challenges of marketing a book from an artist\u27s perspective
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