Author: J. Smiltens
Publisher:
ISBN:
Category : Mass spectrometry
Languages : en
Pages : 12
Book Description
An equation for determination of the standard free energy of formation of a double oxide by means of a mass spectrometer has been derived. The quantities required by the equation are (1) the ratio of the intensities of an ion and (2) the ratio of the oxygen pressures at two equilibriums involving the double oxide and the constituent oxides. (Author).
A Proposed Method for the Determination of the Standard Free Energy of Formation of a Double Oxide by a Mass Spectrometer
Author: J. Smiltens
Publisher:
ISBN:
Category : Mass spectrometry
Languages : en
Pages : 12
Book Description
An equation for determination of the standard free energy of formation of a double oxide by means of a mass spectrometer has been derived. The quantities required by the equation are (1) the ratio of the intensities of an ion and (2) the ratio of the oxygen pressures at two equilibriums involving the double oxide and the constituent oxides. (Author).
Publisher:
ISBN:
Category : Mass spectrometry
Languages : en
Pages : 12
Book Description
An equation for determination of the standard free energy of formation of a double oxide by means of a mass spectrometer has been derived. The quantities required by the equation are (1) the ratio of the intensities of an ion and (2) the ratio of the oxygen pressures at two equilibriums involving the double oxide and the constituent oxides. (Author).
Optimum Binary FSK for Transmitted Reference Systems Over Rayleigh Fading Channels
Author: Neil J. Bershad
Publisher:
ISBN:
Category : Decision theory
Languages : en
Pages : 32
Book Description
It is well known that in communicating over randomly time-varying channels, a receiver which performs a channel measurement can make a better decision than one that does not. It is shown that a channel-measuring system improves system performance even when the channel characteristics are fixed only during the present message interval. The randomly time-varying channel studied is that of a Rayleigh fading medium with independently fading mark and space channels whose fading is fixed over one baud interval but is independent from baud to baud. The transmission system is a modified frequency shift keying (FSK) system such that during a portion of a baud interval the mark and space frequencies are always transmitted so as to act as reference signals. For the above system, the following characteristics have been established: (a) Optimum receiver configuration, (b) Optimum ratio alpha of information energy to total signal energy as a function of total available signal-to-noise ratio for a single fading channel, (c) Asymptotic optimum alpha for an M-diversity channel, (d) Error probabilities for (b) and asymptotic error probabilities for (c) for alpha opt as a function of total signal-to-noise ratio. The asymptotic results show that by using reference techniques the order of diversity is effectively doubled. (Author).
Publisher:
ISBN:
Category : Decision theory
Languages : en
Pages : 32
Book Description
It is well known that in communicating over randomly time-varying channels, a receiver which performs a channel measurement can make a better decision than one that does not. It is shown that a channel-measuring system improves system performance even when the channel characteristics are fixed only during the present message interval. The randomly time-varying channel studied is that of a Rayleigh fading medium with independently fading mark and space channels whose fading is fixed over one baud interval but is independent from baud to baud. The transmission system is a modified frequency shift keying (FSK) system such that during a portion of a baud interval the mark and space frequencies are always transmitted so as to act as reference signals. For the above system, the following characteristics have been established: (a) Optimum receiver configuration, (b) Optimum ratio alpha of information energy to total signal energy as a function of total available signal-to-noise ratio for a single fading channel, (c) Asymptotic optimum alpha for an M-diversity channel, (d) Error probabilities for (b) and asymptotic error probabilities for (c) for alpha opt as a function of total signal-to-noise ratio. The asymptotic results show that by using reference techniques the order of diversity is effectively doubled. (Author).
Wave Interaction in Oxygen Magnetoplasmas
Author: K. V. Narasinga Rao
Publisher:
ISBN:
Category : Oxygen
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Oxygen
Languages : en
Pages : 16
Book Description
The Paraboloid Mirror
Author: Carlyle J. Sletten
Publisher:
ISBN:
Category : Satellite dish antennas
Languages : en
Pages : 26
Book Description
Publisher:
ISBN:
Category : Satellite dish antennas
Languages : en
Pages : 26
Book Description
The Control of Electromagnetic Scattering by Impedance Loading
Author: J. K. Schindler
Publisher:
ISBN:
Category : Electromagnetism
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Electromagnetism
Languages : en
Pages : 24
Book Description
A Discussion of the Wheeler-Feynman Absorber Theory of Radiation
Author: Ronald G. Newburgh
Publisher:
ISBN:
Category : Absorption
Languages : en
Pages : 34
Book Description
The Wheeler-Feynman absorber theory of radiation is reviewed. A proof is offered to show that a sum of advanced and retarded effects from the absorber can provide the origin of radiative reaction. This proof is different from and perhaps simpler than that of Wheeler and Feynman. From arguments of momentum and energy conservation the necessity of the absorber for the emission of radiation is demonstrated for three cases. (Author).
Publisher:
ISBN:
Category : Absorption
Languages : en
Pages : 34
Book Description
The Wheeler-Feynman absorber theory of radiation is reviewed. A proof is offered to show that a sum of advanced and retarded effects from the absorber can provide the origin of radiative reaction. This proof is different from and perhaps simpler than that of Wheeler and Feynman. From arguments of momentum and energy conservation the necessity of the absorber for the emission of radiation is demonstrated for three cases. (Author).
The Crystal Structure of 2-(4'-amino-5'-aminopyrimidy)-2-pentene-4-one
Author: J. Silverman
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 22
Book Description
Production of H− (1s2) by Hydrogen Atom Collisions
Author: R. A. Mapleton
Publisher:
ISBN:
Category : Collisional excitation
Languages : en
Pages : 16
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).
Publisher:
ISBN:
Category : Collisional excitation
Languages : en
Pages : 16
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 Transient Wave Propagation in a Plasma
Author: Carl T. Case
Publisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 14
Book Description
Publisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 14
Book Description
On the Theory of Boolean Formulas
Author: Lorenzo Calabi
Publisher:
ISBN:
Category : Algebra, Boolean
Languages : en
Pages : 50
Book Description
Substitution operators for subformulas of Boolean formulas are introduced and investigated.
Publisher:
ISBN:
Category : Algebra, Boolean
Languages : en
Pages : 50
Book Description
Substitution operators for subformulas of Boolean formulas are introduced and investigated.