Diffusion theory and marketing

Marketing ◽  
1983 ◽  
pp. 184-195
Author(s):  
Michael J. Baker ◽  
A. J. Brown ◽  
Douglas Brownlie ◽  
Keith Crosier ◽  
Jennifer L. Drayton ◽  
...  
Keyword(s):  
Diffusion Theory

The Adoption of Health Promotion Programs by State Agencies

1987 ◽  
Vol 16 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Nell H. Gottlieb ◽  
Linda E. Lloyd ◽  
Jean N. Bounds
Keyword(s):  
Health Promotion ◽  
Diffusion Theory ◽  
General Interest ◽  
State Agencies ◽  
Health Promotion Programs ◽  
Potential Benefits ◽  
Education Act ◽  
One Year ◽  
Time And Energy ◽  
Personnel Directors

Personnel directors of Texas state agencies were surveyed one month prior to and one year following the passage of the 1983 Texas State Employee Health Fitness and Education Act. This legislation allowed the agencies to use available funds and facilities for health promotion programs. Most of the personnel directors were aware of the Act and of the potential benefits of health promotion programs. There was general interest in learning more about health promotion, available community resources, and about the time and energy commitments in developing a program. Most believed they would implement programs in the future. In the year following the passage of the Act, 16 percent of the agencies, covering 30,852 employees, had received approval to begin programs. Size was positively related to plan development and approval. The results are discussed using diffusion theory.

Neutron noise calculation: A comparative study between SP3 theory and diffusion theory

2021 ◽  
Vol 156 ◽  
pp. 108184
Author(s):  
Helin Gong ◽  
Zhang Chen ◽  
Wenbin Wu ◽  
Xingjie Peng ◽  
Qing Li
Keyword(s):  
Comparative Study ◽  
Diffusion Theory ◽  
Neutron Noise ◽  
And Diffusion

Extensions of Asymptotic Neutron Diffusion Theory

1968 ◽  
Vol 32 (1) ◽  
pp. 101-110 ◽  
Author(s):  
Alan M. Winslow
Keyword(s):  
Diffusion Theory ◽  
Neutron Diffusion

scholarly journals Heat Transfer in Nanomaterial Suspension (CuO and Al2O3) Using KKL Model

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 417
Author(s):  
Muhammad Awais ◽  
Saeed Ehsan Awan ◽  
Muhammad Asif Zahoor Raja ◽  
Muhammad Nawaz ◽  
Wasim Ullah Khan ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Angular Momentum ◽  
Diffusion Theory ◽  
Shear Thickening ◽  
Physical Parameters ◽  
Shear Stresses ◽  
Nonlinear Conservation Laws ◽  
Error Analyses ◽  
Flexible Surface ◽  
Flux Model

Novel nonlinear power-law flux models were utilized to model the heat transport phe-nomenon in nano-micropolar fluid over a flexible surface. The nonlinear conservation laws (mass, momentum, energy, mass transport and angular momentum) and KKL cor-relations for nanomaterial under novel flux model were solved numerically. Computed results were used to study the shear-thinning and shear-thickening nature of nano pol-ymer suspension by considering n-diffusion theory. Normalized velocity, temperature and micro-rotation profiles were investigated under the variation of physical parame-ters. Shear stresses at the wall for nanoparticles (CuO and Al2O3) were recorded and dis-played in the table. Error analyses for different physical parameters were prepared for various parameters to validate the obtained results.

scholarly journals The Rate of Compensatory Evolution

Genetics ◽  
1996 ◽  
Vol 144 (1) ◽  
pp. 419-426 ◽  
Author(s):  
Wolfgang Stephan
Keyword(s):  
Diffusion Theory ◽  
Secondary Structures ◽  
Compensatory Mutation ◽  
Weak Selection ◽  
Mutation Pressure ◽  
Theory Of Evolution ◽  
Compensatory Evolution ◽  
Expected Time ◽  
Individual Fitness ◽  
Shifting Balance

Abstract A two-locus model is presented to analyze the evolution of compensatory mutations occurring in stems of RNA secondary structures. Single mutations are assumed to be deleterious but harmless (neutral) in appropriate combinations. In proceeding under mutation pressure, natural selection and genetic drift from one fitness peak to another one, a population must therefore pass through a valley of intermediate deleterious states of individual fitness. The expected time for this transition is calculated using diffusion theory. The rate of compensatory evolution, kc, is then defined as the inverse of the expected transition time. When selection against deleterious single mutations is strong, kc, depends on the recombination fraction r between the two loci. Recombination generally reduces the rate of compensatory evolution because it breaks up favorable combinations of double mutants. For complete linkage, kc, is given by the rate at which favorable combinations of double mutantS are produced by compensatory mutation. For r > 0, kc, decreases exponentially with r. In contrast, kc, becomes independent of r for weak selection. We discuss the dynamics of evolutionary substitutions of compensatory mutants in relation to Wright'S shifting balance theory of evolution and use our results to analyze the substitution process in helices of mRNA secondary structures.

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