Intensity and dipole correlation functions for the ν3 band of compressed OCS

1981 ◽  
Vol 59 (11) ◽  
pp. 1563-1568 ◽  
Author(s):  
Nguyen-van- Thanh ◽  
J.-P. Bouanich ◽  
I. Rossi ◽  
H. Strapelias
Keyword(s):  
Dipole Moment ◽  
Diffusion Model ◽  
Ir Spectrum ◽  
Correlation Functions ◽  
Coexistence Curve ◽  
Diffusion Models ◽  
Impact Approximation ◽  
Integrated Intensities ◽  
The Impact ◽  
Dipole Correlation

The IR spectrum of the ν3 band (4.85 μm) of gaseous OCS has been investigated along the liquid–vapor coexistence curve for temperatures varying from 268 to 358 K and densities up to 80 amagat. Measurements of integrated intensities are also reported at room temperature.The dipole moment autocorrelation functions (ACF) deduced from the spectra of compressed OCS are analyzed in terms of a collisional model derived from the impact approximation and in terms of Gordon M and J diffusion models developed classically as well as the semi-classical M diffusion model. For the collisional model which implies uncorrelated rotational levels, a discrepancy between predicted and observed ACF's is noticeable from about 15 amagat. The M and J diffusion models agree well with the experimental ACF's only up to 40 amagat.

scholarly journals Influence of Customer Attrition on Diffusion of Business Education Services

2017 ◽  
Vol 2 (2) ◽  
pp. 125-134
Author(s):  
Nitin Sachdeva
Keyword(s):  
Goodness Of Fit ◽  
New Product ◽  
Mean Value ◽  
Diffusion Models ◽  
Primary Data ◽  
Type I ◽  
Modeling Framework ◽  
Customer Attrition ◽  
The Impact

Innovation diffusion models have been developed by many researchers during the past few decades based on the famous Bass (1969) model. Several such diffusion models have been developed in consideration of price, marketing efforts etc., however, it is hardly seen that customer attrition (disadoption) can play a significant role in long term growth process of any new product or service. This paper defines two types of disadoption process, Type I disadoption and Type II disadoption process, representing disadopters from innovators and imitators, respectively. We illustrate that there is an increase in the market size along with the adoption of new product and this increase is addressed in this paper. The explicit mean value function for the two types of disadoption processes is derived in this paper. The thrust of the research is on studying the management educational services in the Delhi/NCR region of India and the impact of disadoption on the long term growth of such services. In order to validate the proposed modeling framework, we make use of different goodness-of-fit criteria on primary data collected from an institute in Delhi/NCR.

Quantum and classical IR spectra of (HCOOH)2, (DCOOH)2 and (DCOOD)2 using ab initio potential energy and dipole moment surfaces

2018 ◽  
Vol 212 ◽  
pp. 33-49 ◽  
Author(s):  
Chen Qu ◽  
Joel M. Bowman
Keyword(s):  
Dipole Moment ◽  
Potential Energy ◽  
Ir Spectra ◽  
Ab Initio ◽  
Ir Spectrum ◽  
Quantum Calculation

Full-dimensional (24 modes) quantum calculation of the IR spectrum of (DCOOD)2, and comparison with classical MD one.

The far wings (beyond the impact approximation)

2021 ◽  
pp. 291-335
Author(s):  
Jean-Michel Hartmann ◽  
Christian Boulet ◽  
Daniel Robert
Keyword(s):  
Impact Approximation ◽  
The Impact

Influence of (Al1/3W2/3)5+ co-substitution for Nb5+ in NdNbO4 and the impact on the crystal structure and microwave dielectric properties

2018 ◽  
Vol 47 (44) ◽  
pp. 15808-15815 ◽  
Author(s):  
Hongcheng Yang ◽  
Shuren Zhang ◽  
Hongyu Yang ◽  
Ying Yuan ◽  
Enzhu Li
Keyword(s):  
Crystal Structure ◽  
Dielectric Properties ◽  
Ir Spectrum ◽  
Microwave Dielectric Properties ◽  
Complex Chemical ◽  
Microwave Dielectric ◽  
Bond Theory ◽  
Chemical Bond Theory ◽  
The Impact ◽  
The Relationship

The relationship between structure, bond characterizations and microwave dielectric properties of NdNb1−x(Al1/3W2/3)xO4 (0.03 ≤ x ≤ 0.07) ceramics was characterized by complex chemical bond theory and IR spectrum.

scholarly journals On the gene conversion model as a mechanism for maintenance of homogeneity in systems with multiple genomes

1977 ◽  
Vol 30 (1) ◽  
pp. 89-91 ◽  
Author(s):  
Tomoko Ohta
Keyword(s):  
Population Genetics ◽  
Gene Conversion ◽  
Diffusion Model ◽  
Diffusion Models ◽  
Conversion Model ◽  
Multiple Genomes ◽  
New Mutations

SUMMARYThe gene conversion model reported by Birky & Skavaril (1976) has been analytically studied by using the theory of diffusion models of Kimura (1964) in population genetics. It has been shown that the fate of new mutations in systems with multiple genomes may be satisfactorily treated by the diffusion model.

The influence of intracollisional interference on the dipole spectrum of HD

1978 ◽  
Vol 56 (1) ◽  
pp. 75-81 ◽  
Author(s):  
R. H. Tipping ◽  
J. D. Poll ◽  
A. R. W. McKellar
Keyword(s):  
Dipole Moment ◽  
Translational Motion ◽  
Rotational Level ◽  
Intermolecular Forces ◽  
Spectral Lines ◽  
Destructive Interference ◽  
Matrix Elements ◽  
Moment Matrix ◽  
Integrated Intensities ◽  
Induced Dipoles

The influence of intracollisional interference on the dipole spectrum of pure HD is investigated within the framework of an adiabatic separation of the relative translational motion and non-mixing of rotational levels. The effect leads to a density dependence of the integrated intensities for the sharp spectral lines. It is found that the large discrepancy between the theoretical and experimental pure rotational dipole moment matrix elements for HD reported in the literature can be interpreted as destructive interference between the allowed and the collision-induced dipoles. Similar calculations for the fundamental band are in excellent agreement with the experimental results for the R1(1) line, but agree less well for the R1(0) line. We interpret this, as well as the asymmetrical line shape, as evidence of rotational level mixing due to anisotropic intermolecular forces.

scholarly journals A Study on Water Pollution Source Localization in Sensor Networks

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Jun Yang ◽  
Xu Luo
Keyword(s):  
Water Pollution ◽  
Diffusion Model ◽  
Source Localization ◽  
Pollution Source ◽  
Good Choice ◽  
Diffusion Models ◽  
Hypotheses Testing ◽  
Localization Algorithm ◽  
Source Detection ◽  
Localization Method

The water pollution source localization is of great significance to water environment protection. In this paper, a study on water pollution source localization is presented. Firstly, the source detection is discussed. Then, the coarse localization methods and the localization methods based on diffusion models are introduced and analyzed, respectively. In addition, the localization method based on the contour is proposed. The detection and localization methods are compared in experiments finally. The results show that the detection method using hypotheses testing is more stable. The performance of the coarse localization algorithm depends on the nodes density. The localization based on the diffusion model can yield precise localization results; however, the results are not stable. The localization method based on the contour is better than the other two localization methods when the concentration contours are axisymmetric. Thus, in the water pollution source localization, the detection using hypotheses testing is more preferable in the source detection step. If concentration contours are axisymmetric, the localization method based on the contour is the first option. And, in case the nodes are dense and there is no explicit diffusion model, the coarse localization algorithm can be used, or else the localization based on diffusion models is a good choice.

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