Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Don W. DeMichele"'
Autor:
Don W. DeMichele, Peter J.H. Sharpe
Publikováno v:
Transactions of the ASAE. 17:0355-0359
Autor:
Don W. DeMichele, Peter J.H. Sharpe
Publikováno v:
Journal of Theoretical Biology. 64:649-670
A stochastic thermodynamic model of poikilotherm development has been derived from the Eyring equation assuming multiple activity states of the underlying developmental control enzymes. This analysis brings together into a general model the day-degre
Publikováno v:
Journal of Theoretical Biology. 86:493-505
A time-dependent mathematical expression of the Munch, osmotically driven mass flow hypothesis of phloem transport is presented. The dependent variables include concentration of solutes, pressure, velocity of phloem sap, osmotic flux of water, and co
Publikováno v:
American Journal of Agricultural Economics. 60(3):469-475
A simulation model of interaction between the boll weevil insect subsystem and the cotton plant subsystem is presented. Field experiments provide the basis for validation of the model. Pesticide control scheme is introduced, and optimal control is ac
Publikováno v:
Environmental Entomology. 5:1011-1016
This paper presents a theoretical analysis of the rate of water loss from abscissed flower buds of cotton, Gassypium hirsutum L., under any given set of environmental conditions. The bud drying model provides a link between larval boll weevil, Anthon
Publikováno v:
Plant, Cell and Environment. 2:181-188
The suggestion of concentration dependent unloading as a necessary assumption for a closed-form mathematical expression of the Munch hypothesis of phloem transport (Goeschl et at., 1976) has been recently questioned (Ferrier & Christy, 1977). Also qu
Publikováno v:
Mathematical Biosciences. 34:63-78
Under the assumption that foliage area distributions may be adequately approximated by probability distributions, a general law for the prediction of direct sunlight penetration of crop canopies is derived. It is shown that the Poisson (Beer's) law i
Publikováno v:
Agronomy Journal. 72:131-142
Autor:
Don W. DeMichele, Peter J.H. Sharpe
Publikováno v:
Agricultural Meteorology. 14:229-241
DeMichele, D. W. and Sharpe, P. J. H., 1974. A parametric analysis of the anatomy and physiology of the stomata. Agric. Meteorol., 14: 229–241. This paper highlights the stomatal dimensions and pressure relationships which might be genetically or e
Autor:
Guy L. Curry, Don W. DeMichele
Publikováno v:
The Canadian Entomologist. 109:1167-1174
In this paper, a stochastic analysis approach for predator–prey systems modeling is developed. The states of the system are assumed to have a natural probabilistic variation. Elements of queueing theory are used to describe these variations and to