378
378

Jun 27, 2009
06/09

by
Lipps, G. F. (Gottlob Friedrich), 1865-1931

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Book digitized by Google from the library of University of Wisconsin - Madison and uploaded to the Internet Archive by user tpb.

Topics: Senses and sensation, Error analysis (Mathematics), Probabilities

Source: http://books.google.com/books?id=BUpVAAAAMAAJ&oe=UTF-8

Program prints and plots results of computations such as ray traces, radial energy distributions, and designs of two-mirror telescopes.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), CDC 3200 COMPUTER, COMPUTER AIDED...

Differential-correction program evaluates optical lens design.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), COMPUTER PROGRAMS, EVALUATION,...

An extensive examination of ellipsometric equations for anisotropic surfaces and films is reported. It is shown that the reflection matrix can be calculated by writing Maxwell's equations in 6 x 6 matrix form and by applying appropriate boundary conditions at proper points in the development of the formalism, reducing the equation for the propagation of light to an eigenvalue problem using a 4 x 4 matrix.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), ELLIPSOMETERS, EQUIPMENT...

An alternating direction implicit (ADI) scheme was constructed by the method of approximate factorization. An A-stable linear multistep method (LMM) was used to integrate a model two-dimensional hyperbolic-parabolic partial differential equation. Sufficient conditions for the A-stability of the LMM were determined by applying the theory of positive real functions to reduce the stability analysis of the partial differential equations to a simple algebraic test. A linear test equation for partial...

Topics: NASA Technical Reports Server (NTRS), ALTERNATING DIRECTION IMPLICIT METHODS, FLUID DYNAMICS,...

A new linearized-theory pressure-coefficient formulation was studied. The new formulation is intended to provide more accurate estimates of detailed pressure loadings for improved stability analysis and for analysis of critical structural design conditions. The approach is based on the use of oblique-shock and Prandtl-Meyer expansion relationships for accurate representation of the variation of pressures with surface slopes in two-dimensional flow and linearized-theory perturbation velocities...

Topics: NASA Technical Reports Server (NTRS), AERODYNAMIC LOADS, DELTA WINGS, PRESSURE DISTRIBUTION,...

This Quarterly Report deals with the deployment maneuver of a single-axis, vertical constellation with three masses. A new, easy to handle, computer code that simulates the two-dimensional dynamics of the constellation has been implemented. This computer code is used for designing control laws for the deployment maneuver that minimizes the acceleration level of the low-g platform during the maneuver.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), EARTH ORBITS, EQUATORIAL ORBITS,...

The mathematical properties of the pressure-velocity and vorticity-velocity formulations of the equations of viscous flow are compared. It is shown that a vorticity-velocity formulation exists which has the interesting property that non-inertial effects only enter the problem through the implementation of initial and boundary conditions. This valuable characteristic, along with other advantages of the vorticity-velocity approach, are discussed in detail.

Topics: NASA Technical Reports Server (NTRS), COMPUTATIONAL FLUID DYNAMICS, VELOCITY DISTRIBUTION, VISCOUS...

Morrison's iterative method of noise removal, or Morrison's smoothing, is applied in a simulation to noise-added data sets of various noise levels to determine its optimum use. Morrison's smoothing is applied for noise removal alone, and for noise removal prior to deconvolution. For the latter, an accurate method is analyzed to provide confidence in the optimization. The method consists of convolving the data with an inverse filter calculated by taking the inverse discrete Fourier transform of...

Topics: NASA Technical Reports Server (NTRS), CONVOLUTION INTEGRALS, ITERATIVE SOLUTION, NOISE REDUCTION,...

Satellite conjunction risk typically evaluated through the probability of collision (Pc). Considers both conjunction geometry and uncertainties in both state estimates. Conjunction events initially discovered through Joint Space Operations Center (JSpOC) screenings, usually seven days before Time of Closest Approach (TCA). However, JSpOC continues to track objects and issue conjunction updates. Changes in state estimate and reduced propagation time cause Pc to change as event develops. These...

Topics: NASA Technical Reports Server (NTRS), PROBABILITY THEORY, COLLISIONS, COLLISION AVOIDANCE, TRACKING...

539
539

May 23, 2011
05/11

by
Dhaliwal, Swarn S

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An investigation was undertaken to build the software foundation for the WHERE (Web-based Hyper-text Environment for Requirements Engineering) project. The TCM (Toolkit for Conceptual Modeling) was chosen as the foundation software for the WHERE project which aims to provide an environment for facilitating collaboration among geographically distributed people involved in the Requirements Engineering process. The TCM is a collection of diagram and table editors and has been implemented in the C...

Topics: COMPUTER AIDED DESIGN, GRID GENERATION (MATHEMATICS), STEADY STATE, STRUCTURAL ANALYSIS,...

125
125

Jun 18, 2013
06/13

by
Kanda, Motohisa; Orr, R. David

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Topics: Error analysis (Mathematics), Radio frequency.

248
248

Jul 21, 2010
07/10

by
Rose, W. C

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The angle of attack (AOA) tandem cavity wind tunnel experiment was prepared. Actual wind tunnel testing started shortly after the beginning of 1985. A multi-probe aerodynamic rake was designed and installed for use in surveying the shear layers present over the open cavity on the Kuiper Airborne Observatory (KAO). The nature of the behavior of the thermal environment within the KAO cavity at operational altitudes was determined. Assistance was given in the design of the cavity for the...

Topics: ALGORITHMS, ELLIPTIC DIFFERENTIAL EQUATIONS, ELLIPTIC FUNCTIONS, ITERATIVE SOLUTION, PARTIAL...

Elements of Functional Analysis Author: Francis Hirsch, Gilles Lacombe Published by Springer New York ISBN: 978-1-4612-7146-8 DOI: 10.1007/978-1-4612-1444-1

Topics: Mathematics, Global analysis (Mathematics), Global analysis (Mathematics), Mathematics

Folkscanomy: A Library of Books

1,865
1.9K

Dec 30, 2015
12/15

by
Qian, Tao; Hempfling, Thomas; McIntosh, Alan; Sommen, Frank

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Advances in Analysis and Geometry: New Developments Using Clifford Algebras Author: Tao Qian, Thomas Hempfling, Alan McIntosh, Frank Sommen Published by Birkhäuser Basel ISBN: 978-3-0348-9589-7 DOI: 10.1007/978-3-0348-7838-8 Table of Contents: Hodge Decompositions on Weakly Lipschitz Domains Monogenic Functions of Bounded Mean Oscillation in the Unit Ball Bp,q-Functions and their Harmonic Majorants Spherical Means and Distributions in Clifford Analysis Hypermonogenic Functions and their...

Topics: Mathematics, Global analysis (Mathematics), Integral equations, Operator theory, Functions,...

190
190

Jun 21, 2010
06/10

by
NON

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Two stochastic approximation procedures for identifying linear systems

Topics: CODING, DATA LINKS, DECODERS, RANDOM NOISE, ANALYSIS (MATHEMATICS), BIT SYNCHRONIZATION, DATA...

California Digital Library

1,371
1.4K

Feb 12, 2008
02/08

by
Thiele, T. N. (Thorvald Nicolai), 1838-1910

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I. The law of causality.--II. Laws of errors.--III. Tabular arrangements.--IV. Curves of errors.--V. Functional laws of errors.--VI. Laws of errors expressed by symmetrical functions.--VII. Relations between functional laws of errors and half-invariants.--VIII. Laws of errors of functions of observations.--IX. Free functions.--X. Adjustment.--XI. Adjustment by correlates.--XII. Adjustment by elements.--XIII. Special auxiliary methods.--XIV. The theory of probability.--XV. The formal theory of...

Topics: Error analysis (Mathematics), Probabilities, Correlation (Statistics)

224
224

Jul 23, 2010
07/10

by
Corrsin, Stanle

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No Abstract Available

Topics: ALGEBRA, ROOTS OF EQUATIONS, STABILITY, ANALYSIS (MATHEMATICS), POLYNOMIALS, REAL VARIABLES

344
344

Sep 20, 2010
09/10

by
Uphoff, Chaunce

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This paper is a presentation of some practical aspects of orbital transfer from Geosynchronous Transfer Orbit (GTO) to close, near-circular orbits of the Moon. The intent is to identify the important parameters affecting the problem and to bound (approximately) the range of required delta V for a spacecraft that has been placed in GTO. The basic geometric relationships are described and the dynamics are simulated by use of the Zero-Sphere-of Influence Patched Conic method. It is found that the...

Topics: ANALYSIS (MATHEMATICS), EXPONENTIAL FUNCTIONS, MATHEMATICAL MODELS, PETRI NETS, MARKOV CHAINS,...

4
4.0

Feb 10, 2021
02/21

by
Novak, Erich, 1953-

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113 pages ; 25 cm

Topics: Numerical analysis, Error analysis (Mathematics), Approximation theory, Monte Carlo method, Analyse...

7
7.0

Mar 27, 2019
03/19

by
Cooke, John Edward, 1932-

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x, 127 p. : 22 cm

Topics: Accounting -- Data processing, Error analysis (Mathematics), Management -- Data processing

214
214

May 27, 2011
05/11

by
Bandettini, Angelo; Isler, Walter E

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Wind-tunnel tests have been made to determine the location of the boundary-layer transition on three hemispheres having surface roughness (absolute) values of 50, 580, and 2760 microinches. After the initial test run of the smoothest (50 microinch) hemisphere, holes ranging in depth from 1500 to 2500 microinches were noticed in the meridian where transition was observed. The holes were believed to be caused by particles in the air stream. Shadowgraph pictures were obtained of all hemispheres...

Topics: AERODYNAMIC LOADS, FREQUENCY RESPONSE, SWEPT WINGS, FLIGHT TESTS, DEFORMATION, ANALYSIS...

Computer subprogram, WASP, accepts any two of pressure, temperature, and density as input conditions. Pressure and either entropy or enthalpy are also allowable input variables. This flexibility is especially useful in cycle analysis. Metastable calculations can also be made using WASP.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), CDC 3600 COMPUTER, CDC 6600 COMPUTER,...

The Automated Array Assembly Task, Phase 2 of the Low Cost Silicon Solar Array Project is a process development task. The contract provides for the fabrication of modules from large area tandem junction cells (TJC). During this quarter, effort was focused on the design of a large area, approximately 36 sq cm, TJC and process verification runs. The large area TJC design was optimized for minimum I squared R power losses. In the TJM activity, the cell-module interfaces were defined, module...

Topics: NASA Technical Reports Server (NTRS), ASSEMBLIES, AUTOMATIC CONTROL, ELECTRONIC MODULES, SOLAR...

The energy dissipated by viscosity at the edge of a vibrating flat plate is calculated and compared to the radiated acoustic energy. A correction to the Kirchhoff integral estimate of the noise is derived. For Helmholtz number of order unity and smaller the dissipation can be comparable to or greater than the acoustic energy. A viscous compressible theory of the load distribution on a vibrating two dimensional body is developed. First it is shown that load calculations based on potential theory...

Topics: NASA Technical Reports Server (NTRS), ACOUSTICS, AIRFOILS, ENERGY DISSIPATION, LOAD DISTRIBUTION...

Numerical simulations of three dimensional flows in a prototype adaptive wall wind tunnel are conducted at the Mach number of 0.6 to investigate: (1) wind tunnel wall interference, (2) active streamline control by varying air removal or injection along the walls, and (3) to develop a method for establishing wall boundary conditions for interference free flows. Wind tunnel wall interference could be controlled by using only the vertical velocity components. For the configuration tested,...

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), COMPUTERIZED SIMULATION, PROTOTYPES,...

An investigation was performed to evaluate leading-and trailing-edge flap deflections for optimal aerodynamic performance of a High-Speed Civil Transport concept during takeoff and approach-to-landing conditions. The configuration used for this study was designed by the Douglas Aircraft Company during the 1970's. A 0.1-scale model of this configuration was tested in the Langley 30- by 60-Foot Tunnel with both the original leading-edge flap system and a new leading-edge flap system, which was...

Topics: NASA Technical Reports Server (NTRS), NUMERICAL ANALYSIS, EXPERIMENTATION, DATA ACQUISITION, LIFT...

To support the NASA Space Exploration Mission, an in-house program called Combustion Devices Injector Technology (CDIT) is being conducted at the NASA Marshall Space Flight Center (MSFC) for the fiscal year 2005. CDIT is focused on developing combustor technology and analysis tools to improve reliability and durability of upper-stage and in-space liquid propellant rocket engines. The three areas of focus include injector/chamber thermal compatibility, ignition, and combustion stability. In the...

Topics: NASA Technical Reports Server (NTRS), COMBUSTION CHAMBERS, COMBUSTION STABILITY, INJECTORS, HEAT...

This paper introduces a modeling and simulation tool for aeroservoelastic analysis of rectangular wings with trailing edge control surfaces. The inputs to the code are planform design parameters such as wing span, aspect ratio and number of control surfaces. A doublet lattice approach is taken to compute generalized forces. A rational function approximation is computed. The output, computed in a few seconds, is a state space aeroservoelastic model which can be used for analysis and control...

Topics: NASA Technical Reports Server (NTRS), AEROSERVOELASTICITY, RECTANGULAR WINGS, TRAILING EDGES,...

Topics: Least squares, Error analysis (Mathematics), Probabilities, Geodesy -- Problems, exercises, etc

37
37

Oct 30, 2018
10/18

by
Parratt, Lyman G. (Lyman George)

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xv, 255 pages 22 cm

Topics: Probabilities, Error analysis (Mathematics), Error analysis (Mathematics), Probabilities,...

No abstract available

Topics: NASA Technical Reports Server (NTRS), APOLLO SPACECRAFT, ANALYSIS (MATHEMATICS), CONICAL NOZZLES,...

4
4.0

Oct 5, 2020
10/20

by
Blatter, Christian, 1935-

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x, 202 pages : 24 cm

Topics: Wavelets (Mathematics), Ondelettes, Lehrbuch, Wavelet, WAVELET ANALYSIS, ANALYSIS (MATHEMATICS),...

54
54

Jun 30, 2010
06/10

by
Parratt, Lyman G. (Lyman George)

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Topics: Probabilities, Error analysis (Mathematics)

452
452

Aug 15, 2009
08/09

by
Strehlow, F

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Book digitized by Google from the library of the University of California and uploaded to the Internet Archive by user tpb.

Topics: Triangulation, Error analysis (Mathematics)

Source: http://books.google.com/books?id=BxNDAAAAIAAJ&oe=UTF-8

3
3.0

Jul 27, 2020
07/20

by
Novak, Erich, 1953-

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113 p. ; 25 cm

Topics: Numerical analysis, Error analysis (Mathematics), Approximation theory, Monte Carlo method

Determination of aircraft electric field enhancement factors is crucial when using airborne field mill (ABFM) systems to accurately measure electric fields aloft. SRI used the scale model charge transfer technique to determine enhancement factors of several canonical shapes and a scale model Learjet 36A. The measured values for the canonical shapes agreed with known analytic solutions within about 6 percent. The laboratory determined enhancement factors for the aircraft were compared with those...

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), CHARGE TRANSFER, ELECTRIC FIELDS,...

Method introduces roll into the flying-spot scanner by modifying the scanning waveforms.

Topics: NASA Technical Reports Server (NTRS), AIRCRAFT INSTRUMENTS, ANALYSIS (MATHEMATICS), COCKPITS,...

A semianalytical method was developed for determining elastoplastic cyclic stresses and strains at notch roots in metallurgically bonded metal laminates. The method is based on the Neuber equation, which was used with an effective stress-strain curve for the laminate. It was applied to laminates containing a circular hole which were subjected to one cycle of reversed loading. The laminates consisted of two elasto-perfectly-plastic materials with different yield strengths and with either equal...

Topics: NASA Technical Reports Server (NTRS), CYCLIC LOADS, ELASTOPLASTICITY, LAMINATES, METAL BONDING,...

The results of an experimental investigation that was concerned with the quantitative determination of the capabilities of combustion processes associated with coaxial injectors to amplify and sustain combustor oscillations was described. The driving provided by the combustion process was determined by employing the modified standing-wave method utilizing coaxial injectors and air-acetylene mixtures. Analyses of the measured data indicate that the investigated injectors are capable of...

Topics: NASA Technical Reports Server (NTRS), COMBUSTION STABILITY, FUEL INJECTION, GASEOUS ROCKET...

To facilitate the task of objectively comparing competing process options, a methodology was needed for the quantitative evaluation of their relative cost effectiveness. Such a methodology was developed and is described, together with three examples for its application. The criterion for the evaluation is the cost of the energy produced by the system. The method permits the evaluation of competing design options for subsystems, based on the differences in cost and efficiency of the subsystems,...

Topics: NASA Technical Reports Server (NTRS), COST EFFECTIVENESS, PRODUCTION ENGINEERING, SOLAR ARRAYS,...

The first report in a series is presented which is intended to be written by the author with the purpose of treating a class of approximation methods of functions in one and several variables and ways of applying them to geophysics and geodesy. The first report is divided in three parts and is devoted to the presentation of the mathematical theory and formulas. Various optimal ways of representing functions in one and several variables and the associated error when information is had about the...

Topics: NASA Technical Reports Server (NTRS), APPROXIMATION, BOUNDARY VALUE PROBLEMS, GEODESY, GEOPHYSICS,...

The development of a rugged portable instrument to evaluate dose and dose equivalent is described. A tissue-equivalent proportional counter simulating a 2 micrometer spherical tissue volume was operated satisfactorily for over a year. The basic elements of the electronic system were designed and tested. And finally, the most suitable mathematical technique for evaluating dose equivalent with a portable instrument was selected. Design and fabrication of a portable prototype, based on the...

Topics: NASA Technical Reports Server (NTRS), DOSIMETERS, ELECTRONIC EQUIPMENT, PROPORTIONAL COUNTERS,...

Outlines of talks presented at the workshop conducted at Texas A & M University on February 3 and 4, 1983 are presented. Emphasis was given to the application of Mathematics to image processing and pattern recognition.

Topics: NASA Technical Reports Server (NTRS), ALGORITHMS, CONFERENCES, GEOMETRIC RECTIFICATION (IMAGERY),...

This report presents the results of the second year of work on a problem which is part of the NASA HOST Program. Its goals are: (1) to develop and validate unified constitutive models for isotropic materials, and (2) to demonstrate their usefulness for structural analyses of hot section components of gas turbine engines. The unified models selected for development and evaluation are that of Bodner-Partom and Walker. For model evaluation purposes, a large constitutive data base is generated for...

Topics: NASA Technical Reports Server (NTRS), ALLOYS, CREEP TESTS, GAS TURBINE ENGINES, HIGH TEMPERATURE,...

Manual control of rendezvous and docking (RVD) of two spacecraft in low earth orbit by a remote human operator is discussed. Experimental evidence has shown that control performance degradation for large transmission delays (between spacecraft and operations control center) can be substantially improved by the introduction of predictor displays. An intial Optimal Control Model (OCM) analysis of RVD translational and rotational perturbation control was performed, with emphasis placed on the...

Topics: NASA Technical Reports Server (NTRS), DISPLAY DEVICES, OPERATOR PERFORMANCE, PERFORMANCE...

This document contains a complete list of ICASE Reports. Since ICASE Reports are intended to be preprints of articles that will appear in journals or conference proceedings, the published reference is included when it is available.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS (MATHEMATICS), COMPUTERS, NUMERICAL ANALYSIS,...

This report summarizes research conducted at the Institute for Computer Applications in Science and Engineering in applied mathematics, numerical analysis, and computer science during the period April 1, 1987 through October 1, 1987.

Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), ENGINEERING MANAGEMENT,...

The Space Station Environmental Control and Life Support System (ECLSS) contract with NASA MSFC covered the time frame from 9 May 1985 to 31 Dec. 1992. The contract roughly covered the period of Space Station Freedom (SSF) development from early Phase B through Phase C/D Critical Design Review (CDR). During this time, McDonnell Douglas Aerospace-Huntsville (formerly McDonnell Douglas Space Systems Company) performed an analytical support role to MSFC for the development of analytical math...

Topics: NASA Technical Reports Server (NTRS), AEROSPACE SYSTEMS, DESIGN ANALYSIS, ENVIRONMENTAL CONTROL,...

An analytic solution to the heavy ion transport in terms of Green's function is used to generate a highly efficient computer code for space applications. The efficiency of the computer code is accomplished by a nonperturbative technique extending Green's function over the solution domain. The computer code can also be applied to accelerator boundary conditions to allow code validation in laboratory experiments.

Topics: NASA Technical Reports Server (NTRS), BOUNDARY CONDITIONS, GALACTIC COSMIC RAYS, GREEN'S FUNCTIONS,...