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On the Acoustic Basis of the Perception of Intonation by Linguists
  • Language: en
  • Pages: 26

On the Acoustic Basis of the Perception of Intonation by Linguists

  • Type: Book
  • -
  • Published: 1965
  • -
  • Publisher: Unknown

None

A Method for Estimating Atmospheric Noise Amplitudes and Phase Errors in Quenched High-Q Receiving Circuits
  • Language: en
  • Pages: 50

A Method for Estimating Atmospheric Noise Amplitudes and Phase Errors in Quenched High-Q Receiving Circuits

  • Type: Book
  • -
  • Published: 1965
  • -
  • Publisher: Unknown

Very narrow-band quenched filters used for studying VLF radio signals differ from conventional narrow-band circuits in that both signal and atmospheric noise impulses cause only brief quasi-sinusoidal outputs instead of a prolonged ringing. The random overlapping of these short noise and signal bursts can cause errors in phase measurements. It is shown that the distribution of phase errors can be calculated from the amplitude distribution of the output noise envelope. The properties of the phase distribution are discussed in detail, the computation required in the general case is illustrated by means of a numerical example. A simple 'time-sequential' method for experimentally obtaining typical amplitude distributions is suggested. (Author).

Absorption Spectra of the Pink and Lewis-Rayleigh Afterglows of Nitrogen in the Vacuum-uv Region
  • Language: en
  • Pages: 26

Absorption Spectra of the Pink and Lewis-Rayleigh Afterglows of Nitrogen in the Vacuum-uv Region

  • Type: Book
  • -
  • Published: 1965
  • -
  • Publisher: Unknown

None

Characteristic Frequencies from Infrared and Elastic Data
  • Language: en
  • Pages: 14

Characteristic Frequencies from Infrared and Elastic Data

  • Type: Book
  • -
  • Published: 1965
  • -
  • Publisher: Unknown

None

Asymptotic Solutions of Dipoles in a Semi-infinite Medium
  • Language: en
  • Pages: 62

Asymptotic Solutions of Dipoles in a Semi-infinite Medium

  • Type: Book
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  • Published: 1965
  • -
  • Publisher: Unknown

A theoretical analysis is made of the electromagnetic fields in two homogeneous media separated by a plane interface with a point source located in the denser medium. The solution is expressed in the form of integrals which cannot be evaluated explicitly. Asymptotic evaluations of the integrals have been made by many investigators using the saddlepoint technique. In the present work, all known asymptotic results are presented in one comprehensive form, using a modification of the method suggested by Lighthill for the asymptotic evaluation of the Fourier integrals. The regions of validity of the solutions are indicated wherever possible. The advantage of this method over others is its ease and simplicity. The present results agree term by term with the earlier ones of Banos and Wesley (1953-1954), and Paul (1959), who investigated the case of a source and receiver close to the interface, and an arbitrary location of source and receiver, respectively. The results obtained in the report are also compared with those of Stein (1955). (Author).

Monthly Catalog of United States Government Publications
  • Language: en
  • Pages: 1958

Monthly Catalog of United States Government Publications

  • Type: Book
  • -
  • Published: Unknown
  • -
  • Publisher: Unknown

None

U.S. Government Research Reports
  • Language: en
  • Pages: 214

U.S. Government Research Reports

  • Type: Book
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  • Published: 1958
  • -
  • Publisher: Unknown

None

Machine-aided Design of Context-free Grammars
  • Language: en
  • Pages: 30

Machine-aided Design of Context-free Grammars

  • Type: Book
  • -
  • Published: 1965
  • -
  • Publisher: Unknown

The following paper represents work to date on the deformation method for quadratic programming and thus may be regarded as a sequel to Zahl, S. (1964) A Deformation Method for Quadratic Programming, Research Note AFCRL-63-132. It gives an explanation of a modified Iverson programming language and uses this to give a detailed algorithm for the Zahl Deformation Method of Quadratic Programming.

An Anomaly in the Resistivity-temperature Profile of Ultrapure Phenanthrene
  • Language: en
  • Pages: 14
Natural Sapphire is Now Being Re-constructed
  • Language: en
  • Pages: 14

Natural Sapphire is Now Being Re-constructed

  • Type: Book
  • -
  • Published: 1965
  • -
  • Publisher: Unknown

None