Table-lookup algorithm for pattern recognition: ELLTAB (Elliptical Table)

Remotely sensed unit is assigned to category by merely looking up its channel readings in four-dimensional table. Approach makes it possible to process multispectral scanner data using a minicomputer

Engineering verification of the biomass production chamber

The requirements for life support systems, both biological and physical-chemical, for long-term human attended space missions are under serious study throughout NASA. The KSC 'breadboard' project has focused on biomass production using higher plants for atmospheric regeneration and food production in a special biomass production chamber. This chamber is designed to provide information on food crop growth rate, contaminants in the chamber that alter plant growth requirements for atmospheric regeneration, carbon dioxide consumption, oxygen production, and water utilization. The shape and size, mass, and energy requirements in relation to the overall integrity of the biomass production chamber are under constant study

An incremental strategy for calculating consistent discrete CFD sensitivity derivatives

In this preliminary study involving advanced computational fluid dynamic (CFD) codes, an incremental formulation, also known as the 'delta' or 'correction' form, is presented for solving the very large sparse systems of linear equations which are associated with aerodynamic sensitivity analysis. For typical problems in 2D, a direct solution method can be applied to these linear equations which are associated with aerodynamic sensitivity analysis. For typical problems in 2D, a direct solution method can be applied to these linear equations in either the standard or the incremental form, in which case the two are equivalent. Iterative methods appear to be needed for future 3D applications; however, because direct solver methods require much more computer memory than is currently available. Iterative methods for solving these equations in the standard form result in certain difficulties, such as ill-conditioning of the coefficient matrix, which can be overcome when these equations are cast in the incremental form; these and other benefits are discussed. The methodology is successfully implemented and tested in 2D using an upwind, cell-centered, finite volume formulation applied to the thin-layer Navier-Stokes equations. Results are presented for two laminar sample problems: (1) transonic flow through a double-throat nozzle; and (2) flow over an isolated airfoil

Worldviews and the American West: The Life of the Place Itself

A diverse group of writers and scholars follow the lead of noted folklorist Barre Toelken and consider, from the inside, the ways in which varied cultures in the American West understand and express their relations to the world around them. As Barre Toelken puts it in The Dynamics of Folklore, \u27Worldview\u27 refers to the manner in which a culture sees and expresses its relation to the world around it. In Worldviews and the American West, seventeen notable authors and scholars, employing diverse approaches and styles, apply Toelken\u27s ideas about worldview to the American West. While the contributors represent a range of voices, methods, and visions, they are integrated through their focus on the theme of worldview in one region. Worldviews and the American West includes essays by Margaret K. Brady, Hal Cannon, Nora Marks Dauenhauer and Richard Dauenhauer, James S. Griffith, Barry Lopez, Robert McCarl, Elliott Oring, Twilo Scofield, Steve Siporin, Kim Stafford, C. W. Sullivan III, Jeannie B. Thomas, George Venn, George B. Wasson, and William A. Wilson. Each of the authors in this collection attempts to get inside one or more of the worldviews of the many cultures that have come to share and interpret the American West. The result is a lively mix of styles and voices as the authors\u27 own worldviews interact with the multiple perspectives of the diverse peoples (and, in Barry Lopez\u27s The Language of Animals, other species) of the West. This diversity matches the geography of the region they all call home and gives varied life and meaning to its physical and cultural landscape.https://digitalcommons.usu.edu/usupress_pubs/1022/thumbnail.jp

Strengthening Resource Sharing through Community Driven Development and Innovation

Resource sharing is an area in libraries with intense focus on cooperation and innovation. Libraries dedicate themselves to sharing collections to enhance access far beyond what any one library could offer. Resource sharing involves connecting not only users to collections, but connecting many different library technologies. An effective and innovative resource sharing group requires both a commitment to community, but also a commitment to developing technology that can help achieve the group’s goals. The IDS Project is a community-based resource sharing development cooperative whose members are tightly connected through professional development and high-level support initiatives such as the Online Learning Institute and the Mentor Program. Also, the IDS Project serves its members through software development based on deep understanding of community needs. As a development cooperative, the collective expertise of the group is integrated into building new technologies that solve major resource sharing issues. To effectively connect the disparate technologies needed to make resource sharing effective, a new resource sharing platform, IDS Logic, was created to harvest the knowledge and expertise of the engaged community and connect technologies including ILLiad, OCLC services, Integrated Library Systems, and other vendor and library platforms

The variable polarity plasma arc welding process: Its application to the Space Shuttle external tank

The technical history of the variable polarity plasma arc (VPPA) welding process being introduced as a partial replacement for the gas shielded tungsten arc process in assembly welding of the space shuttle external tank is described. Interim results of the weld strength qualification studies, and plans for further work on the implementation of the VPPA process are included

Observations on computational methodologies for use in large-scale, gradient-based, multidisciplinary design incorporating advanced CFD codes

How a combination of various computational methodologies could reduce the enormous computational costs envisioned in using advanced CFD codes in gradient based optimized multidisciplinary design (MdD) procedures is briefly outlined. Implications of these MdD requirements upon advanced CFD codes are somewhat different than those imposed by a single discipline design. A means for satisfying these MdD requirements for gradient information is presented which appear to permit: (1) some leeway in the CFD solution algorithms which can be used; (2) an extension to 3-D problems; and (3) straightforward use of other computational methodologies. Many of these observations have previously been discussed as possibilities for doing parts of the problem more efficiently; the contribution here is observing how they fit together in a mutually beneficial way

Proposal for an experimental test of the many-worlds interpretation of quantum mechanics

The many-worlds interpretation of quantum mechanics predicts the formation of distinct parallel worlds as a result of a quantum mechanical measurement. Communication among these parallel worlds would experimentally rule out alternatives to this interpretation. A procedure for ``interworld'' exchange of information and energy, using only state of the art quantum optical equipment, is described. A single ion is isolated from its environment in an ion trap. Then a quantum mechanical measurement with two discrete outcomes is performed on another system, resulting in the formation of two parallel worlds. Depending on the outcome of this measurement the ion is excited from only one of the parallel worlds before the ion decoheres through its interaction with the environment. A detection of this excitation in the other parallel world is direct evidence for the many-worlds interpretation. This method could have important practical applications in physics and beyond.Comment: 17 pages, standard LaTex, no pictures, comments welcome, revised version corrects typing error in mixing tim

The Importance of Recruitment and Retention in Heliophysics: It\u27s Not Just a Pipeline Problem

A major obstacle in cultivating a robust Heliophysics (and broader scientific) community is the lack of diversity throughout science, technology, engineering, and mathematics (STEM) fields. For many years, this has been understood as a “leaky pipeline” analogy, in which predominately minority students initially interested in STEM gradually fall (or are pushed) out of the field on their way to a scientific research position. However, this ignores critical structural and policy issues which drive even later career Ph.D.s out of a career in Heliophysics. We identify here several systemic problems that inhibit many from participating fully in the Heliophysics community, including soft money pressure, lack of accessibility and equity, power imbalances, lack of accountability, friction in collaboration, and difficulties in forming mentorship bonds. We present several recommendations to empower research-supporting organizations to help create a culture of inclusion, openness, and innovative science