Research and Technology Report. Goddard Space Flight Center

This issue of Goddard Space Flight Center's annual report highlights the importance of mission operations and data systems covering mission planning and operations; TDRSS, positioning systems, and orbit determination; ground system and networks, hardware and software; data processing and analysis; and World Wide Web use. The report also includes flight projects, space sciences, Earth system science, and engineering and materials

Research & Technology Report Goddard Space Flight Center

The main theme of this edition of the annual Research and Technology Report is Mission Operations and Data Systems. Shifting from centralized to distributed mission operations, and from human interactive operations to highly automated operations is reported. The following aspects are addressed: Mission planning and operations; TDRSS, Positioning Systems, and orbit determination; hardware and software associated with Ground System and Networks; data processing and analysis; and World Wide Web. Flight projects are described along with the achievements in space sciences and earth sciences. Spacecraft subsystems, cryogenic developments, and new tools and capabilities are also discussed

3D analytical modelling and iterative solution for high performance computing clusters

Mobile Cloud Computing enables the migration of services to the edge of the Internet. Therefore, high-performance computing clusters are widely deployed to improve computational capabilities of such environments. However, they are prone to failures and need analytical models to predict their behaviour in order to deliver desired quality-of-service and quality-of-experience to mobile users. This paper proposes a 3D analytical model and a problem-solving approach for sustainability evaluation of high-performance computing clusters. The proposed solution uses an iterative approach to obtain performance measurements to overcome the state space explosion problem. The availability modelling and evaluation of master and computing nodes are performed using a multi-repairman approach. The optimum number of repairmen is also obtained to get realistic results and reduce the overall cost. The proposed model is validated using discrete event simulation. The analytical approach is much faster and in good agreement with the simulations. The analysis focuses on mean queue length, throughput, and mean response time outputs. The maximum differences between analytical and simulation results in the considered scenarios of up to a billion states are less than1.149%,3.82%, and3.76%respectively. These differences are well within the5%of confidence interval of the simulation and the proposed model

Maine Perspective, v 12, i 16

The Maine Perspective, a publication for the University of Maine, was a campus newsletter produced by the Department of Public Affairs which eventually transformed into the Division of Marketing and Communication. Regular columns included the UM Calendar, Ongoing Events, People in Perspective, Look Who\u27s on Campus, In Focus, and Along the Mall. The weekly newsletter also included position openings on campus as well as classified ads. Articles in this issue include coverage of the 198th Commencement ceremonies; recognition of outstanding faculty members; the creation of an endowment to honor the vision of Richard Emerick; UMaine\u27s first Ph.D. graduate in Computer Science builds a Beowulf cluster to benefit marine research; and personal profiles of top graduating students

Cluster Computing in the Classroom: Topics, Guidelines, and Experiences

With the progress of research on cluster computing, more and more universities have begun to offer various courses covering cluster computing. A wide variety of content can be taught in these courses. Because of this, a difficulty that arises is the selection of appropriate course material. The selection is complicated by the fact that some content in cluster computing is also covered by other courses such as operating systems, networking, or computer architecture. In addition, the background of students enrolled in cluster computing courses varies. These aspects of cluster computing make the development of good course material difficult. Combining our experiences in teaching cluster computing in several universities in the USA and Australia and conducting tutorials at many international conferences all over the world, we present prospective topics in cluster computing along with a wide variety of information sources (books, software, and materials on the web) from which instructors can choose. The course material described includes system architecture, parallel programming, algorithms, and applications. Instructors are advised to choose selected units in each of the topical areas and develop their own syllabus to meet course objectives. For example, a full course can be taught on system architecture for core computer science students. Or, a course on parallel programming could contain a brief coverage of system architecture and then devote the majority of time to programming methods. Other combinations are also possible. We share our experiences in teaching cluster computing and the topics we have chosen depending on course objectives

Compilation of Abstracts for SC12 Conference Proceedings

1 A Breakthrough in Rotorcraft Prediction Accuracy Using Detached Eddy Simulation; 2 Adjoint-Based Design for Complex Aerospace Configurations; 3 Simulating Hypersonic Turbulent Combustion for Future Aircraft; 4 From a Roar to a Whisper: Making Modern Aircraft Quieter; 5 Modeling of Extended Formation Flight on High-Performance Computers; 6 Supersonic Retropropulsion for Mars Entry; 7 Validating Water Spray Simulation Models for the SLS Launch Environment; 8 Simulating Moving Valves for Space Launch System Liquid Engines; 9 Innovative Simulations for Modeling the SLS Solid Rocket Booster Ignition; 10 Solid Rocket Booster Ignition Overpressure Simulations for the Space Launch System; 11 CFD Simulations to Support the Next Generation of Launch Pads; 12 Modeling and Simulation Support for NASA's Next-Generation Space Launch System; 13 Simulating Planetary Entry Environments for Space Exploration Vehicles; 14 NASA Center for Climate Simulation Highlights; 15 Ultrascale Climate Data Visualization and Analysis; 16 NASA Climate Simulations and Observations for the IPCC and Beyond; 17 Next-Generation Climate Data Services: MERRA Analytics; 18 Recent Advances in High-Resolution Global Atmospheric Modeling; 19 Causes and Consequences of Turbulence in the Earths Protective Shield; 20 NASA Earth Exchange (NEX): A Collaborative Supercomputing Platform; 21 Powering Deep Space Missions: Thermoelectric Properties of Complex Materials; 22 Meeting NASA's High-End Computing Goals Through Innovation; 23 Continuous Enhancements to the Pleiades Supercomputer for Maximum Uptime; 24 Live Demonstrations of 100-Gbps File Transfers Across LANs and WANs; 25 Untangling the Computing Landscape for Climate Simulations; 26 Simulating Galaxies and the Universe; 27 The Mysterious Origin of Stellar Masses; 28 Hot-Plasma Geysers on the Sun; 29 Turbulent Life of Kepler Stars; 30 Modeling Weather on the Sun; 31 Weather on Mars: The Meteorology of Gale Crater; 32 Enhancing Performance of NASAs High-End Computing Applications; 33 Designing Curiosity's Perfect Landing on Mars; 34 The Search Continues: Kepler's Quest for Habitable Earth-Sized Planets

ELAIA 2019

DIRECTOR\u27S NOTE Each fall, the Honors Program at Olivet Nazarene University admits a small number of academically gifted students into its freshman class. From the moment they set foot on our campus, these women and men join a community of scholars, and together they read, reflect upon, and discuss the most important ideas of the past and present—all within a Christian fellowship. The first two years of the program involve a series of Honors courses, taught by a team of faculty and modeled on the historic “old-time college,” where small class relationships, interdisciplinary discussion, and debate prevailed. In the junior and senior years, the Honors Program shifts its focus away from the classroom to the laboratory or library. There, students work on a capstone scholarship project within their major that involves original research and writing. Honors students gain experience comparable to what happens at large research institutions as they work one-on-one with a faculty mentor and alongside their classmates in research seminars to conceive and complete their individual projects. For our graduates—many of whom go on to advanced study in medicine, law, or other fields—scholarship becomes a deeply personal, transformative, and spiritually meaningful act. Throughout their four years, Honors students ultimately learn how to love God with their minds, as well as their hearts. Since its establishment in 2007, the program has continued to grow and flourish, and the depth of its research continues to increase. This second volume of ELAIA represents the fruits of that development, containing capstone research projects from the 2019 Honors Program senior class and their faculty mentors. The Table of Contents is diverse, and in that way it is a crystalline reflection of our program’s community of scholars. I, along with the members of the Honors Council, am gratified by the work of each student and faculty mentor printed within these pages. - Stephen Lowe, Honors Program Directo

Performance measurement and analysis of PC based cluster server using SET of Architecture and modeling a scalable High performance cluster

Not availabl

Stance, strategies, and agency: A collective case study of three secondary ELA teachers’ critical disciplinary literacy practices

During the past decade, literacy education has shifted from generalized reading strategies to instruction that pays particular attention to the ways in which members of disciplinary communities navigate and produce texts. While research around disciplinary literacy (DL) has increased within the past ten years, it is often isolated from critical literacy (CL) scholarship. Borrowing from Moje’s (2015) 4Es teaching heuristic and Stevens and Beans’ (2007) CL tenets, this collective case study examines how three secondary ELA teachers implement critical disciplinary literacies (CDL) (Dyches, 2018a; 2018b; 2018 under review). Data sources include lesson plans, observations, and interviews and coalesce in the telling of three dedicated ELA teachers; Ms. Dickens, a first-year teacher who uses her expertise in British literature to critically examine texts in her Western World Literature course; Ms. Austen, a second-year sixth-grade teacher who used explicit strategy instruction to support disciplinary literacies, and Ms. Shelley, a teacher with eleven years of experience who used CDL to connect with her students while preparing them for their advanced placement (AP) examination. For each case, data were deductively coded for 12 a priori codes of DL, CL, and CDL to determine how teachers’ practices simultaneously infuse literacies that invite students to navigate and critique disciplinary knowledge. Data were then inductively coded to understand the factors that promoted and inhibited their CDL instruction. Findings reveal that these ELA teachers succeeded in incorporating some tenets but were challenged when the tenets required agency, like traversing cycles of deconstruction and reconstruction and promoting social justice. Implications include practical ways in which English Education and Literacy Education departments can support teachers in establishing a CDL stance, explicitly teaching CDL strategies, and promoting CDL-specific agency as members of a disciplinary community