On-line Debugging Techniques

On-line Debugging Techniques PDF Author: Thomas G. Evans
Publisher:
ISBN:
Category : Debugging in computer science
Languages : en
Pages : 20

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On-line Debugging Techniques

On-line Debugging Techniques PDF Author: Thomas G. Evans
Publisher:
ISBN:
Category : Debugging in computer science
Languages : en
Pages : 20

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Book Description


Hydromagnetic Equilibrium and Toroidal (ring) Current Systems

Hydromagnetic Equilibrium and Toroidal (ring) Current Systems PDF Author: Marvin L. White
Publisher:
ISBN:
Category : Magnetohydrodynamic instabilities
Languages : en
Pages : 22

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The Spectral Shifts of Truncated Sinusoids

The Spectral Shifts of Truncated Sinusoids PDF Author: Kurt Toman
Publisher:
ISBN:
Category : Radio waves
Languages : en
Pages : 12

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Production of H− (1s2) by Hydrogen Atom Collisions

Production of H− (1s2) by Hydrogen Atom Collisions PDF Author: R. A. Mapleton
Publisher:
ISBN:
Category : Collisional excitation
Languages : en
Pages : 16

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Book Description
The prior and post Born matrix elements are used to calculate the cross sections for H( - )(1s2) production in hydrogen atom collisions. In contrast to the original version of this work done by Mapleton in 1960, the plane wave approximation to the Coulomb function is partially corrected. The same H( - ) wave functions are used, and the post cross sections are substantially unaltered. Cross sections calculated with the improved H( - ) wave function as compared with the other H( - ) wave functions are from twenty to thirty-five per cent larger for the prior case and twenty to thirty per cent larger for the post case. The post-prior discrepancy, expressed as a ratio, varies between 0.001 and 0.33. (Author).

On the Relative Efficiencies of Context-free Grammar Recognizers

On the Relative Efficiencies of Context-free Grammar Recognizers PDF Author: T. V. Griffiths
Publisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 22

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Book Description
A number of diverse recognition procedures that have been proposed for parsing sentences with respect to a context-free grammar are described in this paper by means of a common device. Each procedure is defined by giving an algorithm for obtaining a nondeterministic Turing Machine recognizer that is equivalent to a given context-free grammar. The formalization of the Turing Machine has been chosen to make possible particularly simple descriptions of the parsing procedures considered.

On the Acoustic Basis of the Perception of Intonation by Linguists

On the Acoustic Basis of the Perception of Intonation by Linguists PDF Author: Philip Lieberman
Publisher:
ISBN:
Category : Intonation (Phonetics)
Languages : en
Pages : 26

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Earth-to-space Communications at Millimeter Wavelengths

Earth-to-space Communications at Millimeter Wavelengths PDF Author: Edward E. Altshuler
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 46

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Book Description
It is expected that with the exploration of outer space, a requirement for high data rate earth-to-space communication channels will arise. A program to investigate the feasibility of using the millimeter-wave region of the spectrum for this application is presented. The theory of atmospheric attenuation resulting from losses due to absorption, scattering and refraction processes is reviewed and used to estimate propagation losses produced by atmospheric gases, clouds and precipitation. Curves of total atmospheric attenuation and noise level as a function of meteorological parameters and antenna elevation angle are also presented. A series of experiments designed to obtain as much information as possible on the limitations imposed by the atmosphere on millimeter-wave propagation is considered. Although experiments using natural celestial bodies such as the sun, moon, planets and galaxies as radio sources are emphasized, those which would utilize aircraft, rockets and satellites are also mentioned. Finally, the characteristics of a recently installed precision 29-ft antenna designed to operate at 35 Gc (wavelength = 8.6 mm) with a traveling-wave maser as a preamplifier for the radiometer are outlined along with the specific experiments for which this antenna system will be used. (Author).

Reflection of Gigacycle-per-second Ultrasonic Waves from an Optical-contact Bond

Reflection of Gigacycle-per-second Ultrasonic Waves from an Optical-contact Bond PDF Author: Paul H. Carr
Publisher:
ISBN:
Category : Acoustics
Languages : en
Pages : 12

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Directivity and Beamwidth Approximations for Large Scanning Dolph-Chebyshev Arrays

Directivity and Beamwidth Approximations for Large Scanning Dolph-Chebyshev Arrays PDF Author: Charles J. Drane (Jr.)
Publisher:
ISBN:
Category : Antenna radiation patterns
Languages : en
Pages : 38

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Book Description
Directivity and beamwidth for radiation patterns corresponding to the optimum Dolph-Chebyshev design have heretofore been determined by means of formulas that, although exact, are intractable to computation and not particularly open to physical interpretation. Approximate but accurate formulas are presented here in closed form, for the purpose of easy examination and computation of directivity and beamwidth for large scannable Dolph-Chebyshev arrays. Array length, number of array elements, the spacing of these elements, and the sidelobe level desired are parameters in this study. The maximum achievable directivity for Chebyshev arrays is in principle limited, regardless of how large the array becomes. Data is given to establish the array length required to obtain a value of directivity at some prescribed level below the maximum value. Comparisons between exact and approximate theory are presented in graphical form in such a way as to illustrate the lower limits of array size for which the approximations are valid. Element spacings less than a half-wavelength are included in this study. (Author).

Bibliography of AFCRL In-house Technical Reports

Bibliography of AFCRL In-house Technical Reports PDF Author: Air Force Cambridge Research Laboratories (U.S.)
Publisher:
ISBN:
Category : Atmosphere, Upper
Languages : en
Pages : 88

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Book Description
The bibliography of AFCRL in-house technical reports lists all reports issued in the existing series. In addition, appendices list reports issued from 1962 to 1964 when series designations were not used, and reports issued in now-defunct series.