Naval Postgraduate School

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Jan 24, 2013
01/13

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Faybusovich, L.;Ammar, Gregory S.;Gragg, William B.

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Technical report for period July 1992 - September 1992.

Topics: INVERSION., MATRICES(MATHEMATICS)., ORTHOGONALITY.

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Oct 6, 2015
10/15

by
Faybusovich, L.;Ammar, Gregory S.;Gragg, William B.

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Technical report for period July 1992 - September 1992.

Topic: INVERSION.,MATRICES(MATHEMATICS).,ORTHOGONALITY.

Title from cover

Topics: EIGENVALUES., COMPUTATIONS., MATRICES(MATHEMATICS).

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Oct 8, 2015
10/15

by
Demmel, J. W.;Gragg, William B.

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Title from cover

Topic: EIGENVALUES.,COMPUTATIONS.,MATRICES(MATHEMATICS).

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Oct 6, 2015
10/15

by
Gastrock, Barry Allen

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Thesis advisor(s): Miller, James A

Topic: Aeronautics,Laminar boundary layer,Matrices,Mathematics

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Jun 17, 2010
06/10

by
Mc Lean, J. D

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No Abstract Available

Topics: APPROXIMATION, COEFFICIENTS, ERRORS, LUNAR TRAJECTORIES, MATRICES (MATHEMATICS)

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Jul 11, 2010
07/10

by
ARGYRIS, J. H.; LOCHNER, N. M.; SCHARPF, D. W

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THE APPLICATION OF THE MATRIX THEORY OF STATICS AND DYNAMICS TO THE CALCULATION OF NATURAL MODES OF OSCILLATION OF ROTOR BLADES IS DESCRIBED. THE BASIC PRINCIPLES OF THE MATRIX DISPLACEMENT METHOD ARE SUMMARIZED. THE IDEALIZED ROTOR BLADE IS BROKEN DOWN INTO ELEMENTS; THEIR ELASTIC REGIDITIES AND KINEMATICALLY EQUIVALENT POINT FORCES AND MOMENTS APPLIED TO NODES, RATHER THAN BEING DISTRIBUTED, ARE DERIVED. THE CORRESPONDING KINEMATICALLY EQUIVALENT MASS MATRIX IS ALSO OBTAINED. THESE AND...

Topics: ARTIFICIAL SATELLITES, ALGORITHMS, MATRICES (MATHEMATICS), SATELLITE ORIENTATION

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Jul 6, 2010
07/10

by
GAVIGLIO, J

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TWO METHODS ARE MENTIONED WHICH ARE USED TO DETERMINE THE SENSITIVITY OF HOT-WIRE ANEMOTHERMOMETERS USED TO ANALYZE THE TURBULENCE OF SUPERSONIC FLOWS. ONE METHOD IS IMPRECISE WITH THE LOWER REYNOLDS NUMBERS, BUT THE APPLICATION IS RELATIVELY EASY; THE OTHER IS PRECISE, HOWEVER, DIFFICULT TO IMPLEMENT. NEW RESULTS FROM EXPERIMENTS ALLOW THE RESPECTIVE ADVANTAGES OF THESE TWO METHODS TO BE COMBINED.

Topics: CODING, DISCRETE FUNCTIONS, COMBINATIONS (MATHEMATICS), CONVERGENCE, MATRICES (MATHEMATICS)

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Jul 11, 2010
07/10

by
NON

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No Abstract Available

Topics: MATRICES (MATHEMATICS), MULTIPLICATION, THEOREM PROVING, ALGEBRA, OPERATORS (MATHEMATICS)

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684

Jun 21, 2010
06/10

by
NON

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Development of radiation sensor subsystems for advanced manned space missions

Topics: MATRICES (MATHEMATICS), MULTIPOLES, S MATRIX THEORY, MICROWAVE CIRCUITS

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May 23, 2011
05/11

by
Long, Christopher C.; Horan, Stephe

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A concept for the addition of a Demand Assignment Multiple Access (DAMA) service to NASA's current Space Network (SN) is developed. Specifically, the design of a receiver for the DAMA channel is outlined. Also, an outline of the procedures taken to process the received service request is presented. The modifications to the (SN) system are minimal. The post reception processing is accomplished using standard commercial off the shelf (COTS) packages. The result is a random access system capable...

Topics: CODING, ALGEBRA, MATRICES (MATHEMATICS), PARITY, LINEAR EQUATIONS, THEOREMS, GEOMETRY

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279

Jul 11, 2010
07/10

by
YELIZAVETIN, G

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DURING ITS FLIGHT OF SEPT. 1973, SOYUZ 12 SERVED AS AN ASTROPHYSICAL LABORATORY. EXPERIMENTS WERE CONDUCTED IN WHICH SPECTROGRAMS WERE TAKEN OF THE EARTH'S SURFACE TO LOCATE MINERAL RESOURCES, AND INVESTIGATIONS OF THE EARTH'S ATMOSPHERE WERE MADE. ABOARD SOYUZ 13, LAUNCHED ON DEC. 18, ASTROPHYSICAL OBSERVATIONS OF STARS IN THE ULTRAVIOLET RANGE WERE CONDUCTED. TESTS WERE MADE ON THE DERIVATION OF NEEDED PROTEIN WITHIN THE LIFE-SUPPORT SYSTEM OF THE VEHICLE AND THE CIRCULATION OF THE BRAIN WAS...

Topics: CAUCHY PROBLEM, PARTIAL DIFFERENTIAL EQUATIONS, MATRICES (MATHEMATICS), PROBLEM SOLVING

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May 31, 2011
05/11

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Troutman, Patrick A.; Krizan, Shawn A; Mazanek, Daniel D.; Stillwagen, Frederic H.; Antol, Jeffrey; Sarver-Verhey, Timothy R.; Chato, David J.; Saucillo, Rudolf J.; Blue, Douglas R.; Carey, David

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This paper summarizes the results of a NASA lead study performed to identify synergistic opportunities and concepts between human exploration initiatives and commercialization of space. The goal of this initiative, called Orbital Aggregation & Space Infrastructure Systems (OASIS), is to develop an in-space architecture and associated concepts that provide common infrastructure for enabling a large class of space missions. The concepts include communications, navigation and power systems,...

Topics: COVARIANCE, MATRICES (MATHEMATICS), QUATERNIONS, ROTATION, KALMAN FILTERS, NORMALITY, REGULARITY

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Dec 11, 2019
12/19

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Symposium on Sparse Matrices and Their Applications (1971 : Yorktown Heights, N.Y.)

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xii, 215 pages 27 cm

Topics: Matrices -- Congresses, Matrices -- Congrès, Matrices, MATRICES, MATRICES (MATHEMATICS), Matrices...

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2.7K

Jun 21, 2010
06/10

by
NON

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Space Programs Summary - supporting research and advanced development

Topics: CONTROL, INDUSTRIES, SYSTEMS ENGINEERING, EQUILIBRIUM, MATHEMATICAL MODELS, MATRICES (MATHEMATICS),...

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Jul 5, 2010
07/10

by
Frolov, U

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No Abstract Available

Topics: LINEAR SYSTEMS, PERIODIC FUNCTIONS, DIFFERENTIAL EQUATIONS, MATRICES (MATHEMATICS), THEOREM PROVING

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Jul 25, 2010
07/10

by
NON

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A common recommendation is established for the implementation of a spacecraft telecommand data routing service by the agencies participating in the CCSDS. The operating principles and procedures for the CCSDS are defined in a reference. The context of the data routing service within the overall telecommand system is described in another reference. This recommendation addresses the procedures and data unit formats implemented within the segmentation layer and the transfer layer of the...

Topics: ALGORITHMS, COMPUTER NETWORKS, REFINING, BANDWIDTH, GRID GENERATION (MATHEMATICS), MATRICES...

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221

Jul 12, 2010
07/10

by
Benjamin, P

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No Abstract Available

Topics: MATRICES (MATHEMATICS), SPACECRAFT, SYSTEMS ANALYSIS, CONTRACTION, DEGREES OF FREEDOM, STIFFNESS

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497

Jul 10, 2010
07/10

by
Robinson, F

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A test program was conducted to isolate and evaluate the individual noise sources of a light helicopter. To accomplish this, the helicopter was mounted on a special test rig, at a 6-foot skid height, in a simulated hover. The test rig contained by dynamometer for absorbing engine power and an exhaust silencing system for reducing engine noise. This test set-up allowed the various components of the helicopter to be run and listened to individually or in any combination. The sound pressure level...

Topics: LIGHT SCATTERING, POLARIZATION (WAVES), SEA WATER, MATRICES (MATHEMATICS), SCATTERING COEFFICIENTS

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236

Jul 6, 2010
07/10

by
POKRZYWNICKI, J

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THE TERM COSMIC DUST IS DEFINED, AND THE FINDING OF COSMIC DUST ON EARTH AND IN THE SOLAR SYSTEM IS DISCUSSED. THE BASIS FOR CALCULATING THE QUANTITY OF COSMIC DUST FALLING ON EARTH USED BY VARIOUS INVESTIGATORS IS PRESENTED.

Topics: APPROXIMATION, NONLINEAR EQUATIONS, ROOTS OF EQUATIONS, EUCLIDEAN GEOMETRY, MATRICES (MATHEMATICS)

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Jun 9, 2011
06/11

by
Rogers, J. L

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Many companies are looking for new tools and techniques to aid a design manager in making decisions that can reduce the time and cost of a design cycle. One tool is the Design Manager's Aid for Intelligent Decomposition (DeMAID). Since the initial public release of DeMAID in 1989, much research has been done in the areas of decomposition, concurrent engineering, parallel processing, and process management; many new tools and techniques have emerged. Based on these recent research and...

Topics: ILL-CONDITIONED PROBLEMS (MATHEMATICS), MATRICES (MATHEMATICS), ESTIMATORS, NONLINEAR SYSTEMS,...

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267

Jul 6, 2010
07/10

by
KRASNOVSKIY, A. A.; UMRIKHINA, A. V

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THE USE OF MODEL SYSTEMS SIMULATING PREBIOLOGICAL CONDITIONS ON EARTH TO STUDY THE PROBLEM OF THE ABIOGENETIC FORMATION OF PORPHYRINS DURING THE CHEMICAL EVOLUTION PROCESS IS DISCUSSED.

Topics: DISCRETE FUNCTIONS, MATRICES (MATHEMATICS), RANDOM PROCESSES, CORRELATION, DIGITAL FILTERS,...

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The World Weather Program which is composed of the World Weather Watch, the Global Atmospheric Research Program, and the Systems Design and Technological Development Program is presented. The U.S. effort for improving the national weather services through advances in science, technology and expanded international cooperation during FY 72 are described. The activities of the global Atmospheric Research Program for last year are highlighted and fiscal summary of U.S. programs is included.

Topics: LEAST SQUARES METHOD, PROBABILITY THEORY, STATISTICS, MATRICES (MATHEMATICS), SATELLITE TRACKING

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228

May 23, 2011
05/11

by
Pinelli, Thomas E.; Barclay, Rebecca O.; Kennedy, John M

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The U.S. government technical report is a primary means by which the results of federally funded research and development (R&D) are transferred to the U.S. aerospace industry. However, little is known about this information product in terms of its actual use, importance, and value in the transfer of federally funded R&D. To help establish a body of knowledge, the U.S. government technical report is being investigated as part of the NASA/DOD Aerospace Knowledge Diffusion Research...

Topics: POLYNOMIALS, DISTANCE, ERROR CORRECTING CODES, MATRICES (MATHEMATICS), THEOREMS, FUNCTION SPACE

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379

May 22, 2011
05/11

by
Hyatt, Mark J.; Bansal, Narottam P

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Crystallization kinetics of BaO.Al2O3.2SiO2 (BAS) and SrO.Al2O3.2SiO2 (SAS) glasses in bulk and powder forms have been studied by non-isothermal differential scanning calorimetry (DSC). The crystal growth activation energies were evaluated to be 473 and 451 kJ/mol for bulk samples and 560 and 534 kJ/mol for powder specimens in BAS and SAS glasses, respectively. Development of crystalline phases on thermal treatments of glasses at various temperatures has been followed by powder x-ray...

Topics: ALGORITHMS, CHOLESKY FACTORIZATION, DATA STRUCTURES, MATRICES (MATHEMATICS), COMPUTATION, MEMORY...

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178

Jul 5, 2010
07/10

by
Beatty, M. E., II

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The effects of 22-MeV protons on various types of silicon single junction and silicon controlled rectifiers were investigated. The results show that low-leakage devices and silicon controlled rectifiers are the most susceptable to radiation damage. There are also differences noted between single junction rectifiers of the same type made by different manufacturers, which emphasizes the need for better selection of devices used in spacecraft.

Topics: ALGORITHMS, TRAJECTORY MEASUREMENT, MATRICES (MATHEMATICS), OPTIMIZATION, PARAMETERIZATION, RANDOM...

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255

Jul 6, 2010
07/10

by
Conn, A. F.; Rudy, S. L

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An investigation pertaining to the development of life prediction methods for materials subjected to high temperature creep/fatigue conditions is presented. High frequency (13.4 kHz) fatigue data were measured at 1400 F on specimens of the nickel-based alloy Udimet 700. Tests were conducted on the virgin material, as well as on specimens which had received prior exposures to high temperature, fatigue, and creep.

Topics: CANONICAL FORMS, DIFFERENTIAL EQUATIONS, LINEARITY, MATRICES (MATHEMATICS), EIGENVALUES, OPERATORS...

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Jun 9, 2011
06/11

by
Banger, Kulbinder K.; Jin, Michael H. C.; Harris, Jerry D.; Fanwick, Philip E.; Hepp, Aloysius F

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We report a new simplified synthetic procedure for commercial manufacture of ternary single source precursors (SSP). This new synthetic process has been successfully implemented to fabricate known SSPs on bulk scale and the first liquid SSPs to the semiconductors CuInSe2 and AgIn(x)S(y). Single crystal X-ray determination reveals the first unsolvated ternary AgInS SSP. SSPs prepared via this new route have successfully been used in a spray assisted chemical vapor deposition (CVD) process to...

Topics: GALERKIN METHOD, MATRICES (MATHEMATICS), QUADRATURES, VECTORS (MATHEMATICS), SYMMETRY, POLYNOMIALS,...

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294

Jul 11, 2010
07/10

by
Mikus, T.; Heywood, J. B.; Hicks, R. E

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A modified Zeldovich kinetic scheme was used to predict nitric oxide formation in the burned gases. Nonuniformities in fuel-air ratio in the primary zone were accounted for by a distribution of fuel-air ratios. This was followed by one or more dilution zones in which a Monte Carlo calculation was employed to follow the mixing and dilution processes. Predictions of NOX emissions were compared with various available experimental data, and satisfactory agreement was achieved. In particular, the...

Topics: EIGENVALUES, EIGENVECTORS, FEEDBACK CONTROL, AIRCRAFT CONTROL, ALGORITHMS, LATERAL CONTROL,...

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292

Jun 21, 2010
06/10

by
Reed, R. E., Jr.; Wilcox, P. R

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Stress concentration due to hyperboloid cavity in thin plate

Topics: CHEBYSHEV APPROXIMATION, EXPONENTIAL FUNCTIONS, LINEAR SYSTEMS, MATRICES (MATHEMATICS),...

Most standard approaches to the static analysis of programs, such as the popular worklist method, are first-order methods that inductively annotate program points with abstract values. In this paper we introduce a second-order approach based on Kleene algebra. In this approach, the primary objects of interest are not the abstract data values, but the transfer functions that manipulate them. These elements form a left-handed Kleene algebra. The dataflow labeling is not achieved by inductively...

Topics: DTIC Archive, Kot,Lucja, Cornell University Ithaca, ALGEBRA, MATRICES MATHEMATICS, ALGORITHMS

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402

Jul 11, 2010
07/10

by
NON

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The total matrix of alternate Spacelab processing concepts and the rejection rationale utilized to reduce the matrix of 243 alternates to the final candidate processing concepts are developed. The work breakdown structure used for the systematic estimation and compilation of integration and checkout resources is presented along with descriptors of each element. Program models are provided of the space transportation system, the Spacelab, the orbiter, and the ATL that were used as the basis for...

Topics: FREE ATMOSPHERE, GRAVIMETRY, GRAVITY ANOMALIES, BLOCK DIAGRAMS, COVARIANCE, DATA ACQUISITION,...

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359

Jun 21, 2010
06/10

by
Hunter, W. W., Jr

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Laboratory measurements of rotational temperatures in static low density air with electron beam probe

Topics: LINEARITY, OPTIMAL CONTROL, TRAJECTORY OPTIMIZATION, CONSTRAINTS, HAMILTONIAN FUNCTIONS, LINEAR...

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Jul 11, 2010
07/10

by
NON

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This two volume publication presents the proceedings of the third through sixth history symposia of the International Academy of Astronautics. Thirty-nine papers are divided into four categories: (1) Early Solid Propellant Rocketry; (2) Rocketry and Astronautics: Concepts, Theory, and Analyses after 1880; (3) The Development of Liquid and Solid Propellant Rockets from 1880 to 1945; and (4) Rocketry and Astronautics after 1945. Categories 1 and 2 will be found in volume 1 and the remainder in...

Topics: ALGORITHMS, LEAST SQUARES METHOD, MATRICES (MATHEMATICS), MATHEMATICAL MODELS, ORTHOGONAL...

Two proofs are presented of an inequality due to Bergstrom.

Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *INEQUALITIES, *MATRICES(MATHEMATICS), MATHEMATICAL...

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648

Jul 6, 2010
07/10

by
Deloatch, E. M

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The five problems studied for biomedical applications of NASA technology are reported. The studies reported are: design modification of electrophoretic equipment, operating room environment control, hematological viscometry, handling system for iridium, and indirect blood pressure measuring device.

Topics: DIFFERENTIAL EQUATIONS, LINEAR SYSTEMS, OSCILLATIONS, EIGENVALUES, LEBESGUE THEOREM, MATRICES...

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309

May 30, 2011
05/11

by
Jules, Kenol; Lin, Paul P

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This paper presents an artificial intelligence monitoring system developed by the NASA Glenn Principal Investigator Microgravity Services project to help the principal investigator teams identify the primary vibratory disturbance sources that are active, at any moment in time, on-board the International Space Station, which might impact the microgravity environment their experiments are exposed to. From the Principal Investigator Microgravity Services' web site, the principal investigator teams...

Topics: ELECTRON SCATTERING, SCATTERING FUNCTIONS, HYDROGEN, SCATTERING CROSS SECTIONS, MATRICES...

Having established tight bounds for the quotient of two different lub-norms of the same tri-diagonal matrix J, the author observes that these bounds could be of use in an error-analysis provided a suitable algorithm were found. Such an algorithm is exhibited, and its errors are thoroughly accounted for, including the effects of scaling, over/underflow and roundoff. A typical result is that, on a computer using rounded bloating point binary arithmetic, the biggest eigenvalue of J can be computed...

Topics: DTIC Archive, STANFORD UNIV CA DEPT OF COMPUTER SCIENCE, *ALGORITHMS, *MATRICES(MATHEMATICS), ERRORS

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454

Jul 11, 2010
07/10

by
HUETTER, U

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SHELL STRUCTURES FOR PROPELLERS AND HELICOPTER BLADES ARE PREDOMINANTLY UNDER CENTRIFUGAL LOADS AND THEREFORE ESSENTIALLY SUBJECTED TO SUCH EXTENSIVE RADIAL STRESSES THAT FULL ADVANTAGE CAN BE TAKEN OF THE HIGH TENSILE STRENGTH OF STRAND-REINFORCED SYNTHETIC RESIN MATERIALS. GREAT DIFFICULTIES HAVE BEEN ENCOUNTERED IN THE PAST WITH THE DIFFUSION OF END LOADS INTO FIBERGLASS REINFORCED COMPOUND MATERIALS. THESE DIFFICULTIES, HOWEVER, CAN BE OVERCOME BY APPLYING THE LOOP METHOD, A METHOD BY WHICH...

Topics: ASYMPTOTES, DIFFERENTIAL EQUATIONS, LINEAR SYSTEMS, LINEAR EQUATIONS, MATRICES (MATHEMATICS), TIME...

An alternative expression is presented for the number of solutions of the congruence of f(x) to O(p).

Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *MATRICES(MATHEMATICS), *NUMBER THEORY, *POLYNOMIALS,...

In this thesis we focus on the problem of entanglement in an important class of states, called X-states, that we will introduce. Our study led us to an algebraic formula for the value of multipartite entanglement for X-states. We will take advantage of this formula to further explore the connection of entanglement and mixedness in multipartite systems and study the dynamics of entanglement in open systems. We introduce the entanglement, its definition, and the properties of good measures of...

Topics: DTIC Archive, ROCHESTER UNIV NY, *MATRICES(MATHEMATICS), ALGEBRA, DYNAMICS, FORMULATIONS, FOULING,...

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225

Sep 20, 2010
09/10

by
Sandel, Bill R.; Herbert, F.; Yelle, R. V

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We propose to continue our investigation of the upper atmosphere of Neptune based primarily on the solar occultation measurements made by the Voyager Ultraviolet Spectrometer (UVS). The ultimate goal of this research is to understand the structure and composition of Neptune's upper atmosphere as encoded in the data base obtained by the UVS during the Voyager 2 encounter with Neptune. The UVS occultations provide information essential to studies of atmospheric composition and structure, energy...

Topics: FLIGHT SIMULATION, INFORMATION THEORY, MAN MACHINE SYSTEMS, PILOT PERFORMANCE, MATHEMATICAL MODELS,...

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678

Sep 20, 2010
09/10

by
Sloan, Alan D

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A deterministic fractal is an image which has low information content and no inherent scale. Because of their low information content, deterministic fractals can be described with small data sets. They can be displayed at high resolution since they are not bound by an inherent scale. A remarkable consequence follows. Fractal images can be encoded at very high compression ratios. This fern, for example is encoded in less than 50 bytes and yet can be displayed at resolutions with increasing...

Topics: AMPLIFICATION, KALMAN FILTERS, LINEAR FILTERS, MIMO (CONTROL SYSTEMS), SCALARS, MATRICES...

Suppose that A is a square matrix consisting of nonnegative elements. In certain considerations it is important to know when all the elements of some power of A are strictly positive. Frobenius gave a very simple necessary and sufficient condition for this to happen. In this paper a simple proof of this result is given. This proof is algebraic in nature and avoids the use of the convergence of powers of a matrix.

Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *MATRICES(MATHEMATICS), ALGEBRA,...

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Jun 21, 2010
06/10

by
Henry, R. E

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Compressible flow of two component, two phase mixtures in nozzles and orifices

Topics: BOUNDARY VALUE PROBLEMS, NEWTON METHODS, NEWTON THEORY, NONLINEAR EQUATIONS, DIFFERENTIAL...

Non-negative indecomposable matrices are studied from the point of view of the Brouwer fixed point theorem; a concise proof of their basic properties is thus obtained. Properties of a general non-negative square matrix A are derived from those of non-negative indecomposable matrices. Theorems about the matrix sI-A are proved; they cover in a unified manner a number of results recurringly used in economics. A systematic study of the convergence of A(P) when p tends to infinity (A is a general...

Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *MATRICES(MATHEMATICS), ECONOMICS, EQUATIONS, PROBABILITY,...

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Jun 1, 2011
06/11

by
Ratvasky, Thomas P.; Ranaudo, Richard J.; Barnhart, Billy P.; Dickes, Edward G.; Gingras, David R

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A piloted flight simulator called the Ice Contamination Effects Flight Training Device (ICEFTD), which uses low cost desktop components and a generic cockpit replication is being developed. The purpose of this device is to demonstrate the effectiveness of its use for training pilots to recognize and recover from aircraft handling anomalies that result from airframe ice formations. High-fidelity flight simulation models for various baseline (non-iced) and iced configurations were developed from...

Topics: ANGLES (GEOMETRY), AXES (REFERENCE LINES), ATTITUDE (INCLINATION), KINEMATIC EQUATIONS, MATRICES...

In this paper we consider the rational canonical form of arbitrary polyphase matrices and use it to derive a simple implementation of paraunitary filter banks (PUFBs) based on a cascade of elementary building blocks. Furthermore, this decomposition is shown to be easily extendable to include a large class of perfect reconstruction filter banks (PRFBs) and can be especially useful for deriving the initial condition of PUFB design algorithms.

Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *SIGNAL PROCESSING, FILTERS, MATRICES(MATHEMATICS),...

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228

May 22, 2011
05/11

by
Thayer, Jeffrey P.; Delabeaujardiere, Odile; Watermann, Jurge

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The objectives of this project were to study the coupling between the ionosphere and the magnetosphere, and to understand how this coupling was affected by changes in the solar wind. The data used consisted of satellite measurements coordinated with Sondrestrom incoherent scatter radar observations. We focused our efforts on the study of temporal and spatial changes in the dayside auroral precipitation and electric field.

Topics: INVERSE KINEMATICS, MANIPULATORS, ROBUSTNESS (MATHEMATICS), WEIGHTING FUNCTIONS, APPROXIMATION,...

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Jun 13, 2011
06/11

by
Hargens, Alan R.; Cao, Peihong, et al; Lee, Stuart M. C.; Schneider, Suzanne M.; Boda, Wanda L.; Smith, Scott M.; Macias, Brandon R.; OLeary, Deborah D.; Meyer, R. Scott; Groppo, Eli R.

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Current exercise systems for space, which attempt to maintain performance, are unable to generate cardiovascular and musculoskeletal loads similar to those on Earth [1, 2]. The purpose of our research is to evaluate the use of lower body negative pressure (LBNP) treadmill exercise to prevent deconditioning during simulated microgravity.

Topics: GENETIC ALGORITHMS, MATRICES (MATHEMATICS), COMPUTER PROGRAMS, OPTIMIZATION, AUTOMATION,...