A stochastic differential equation approach to soil moisture

1987 ◽  
Vol 1 (2) ◽  
pp. 101-116 ◽  
Author(s):  
N. D. Mtundu ◽  
R. W. Koch
Keyword(s):  
Differential Equation ◽  
Soil Moisture ◽  
Stochastic Differential Equation ◽  
Equation Approach

scholarly journals Fitting of von Bertalanffy growth model: Stochastic differential equation approach

2017 ◽  
Vol 64 (3) ◽  
Author(s):  
Prajneshu Gupta ◽  
Himadri Ghosh ◽  
N. N. Pandey
Keyword(s):  
Differential Equation ◽  
Rainbow Trout ◽  
Stochastic Differential Equation ◽  
Computer Code ◽  
Von Bertalanffy ◽  
Equation Approach ◽  
Length Relationship ◽  
Length Data ◽  
Von Bertalanffy Growth Model ◽  
Modelling Approach

In this paper, the well-known von Bertalanffy growth (VBG) model for estimating age-length relationship in fisheries is considered. It is emphasised that nonlinear estimation procedures should be adopted for fitting the von Bertalanffy nonlinear statistical (VBNS) model rather than the age-old Ford-Walford plot. Some limitations of employing VBNS modelling approach are highlighted. Employment of stochastic differential equation (SDE) approach, which does not suffer from these limitations, is advocated for fitting the VBG model. The methodology for fitting the von Bertalanffy SDE (VBSDE) model is described. Relevant computer code for fitting this model is written in SAS package and the same is included as an Appendix. Finally, as an illustration, superiority of VBSDE model over VBNS model for fitting and forecasting purposes is shown for rainbow trout (Onchorhynchus mykiss) age-length data.

A jump stochastic differential equation approach for influence prediction on heterogenous networks

2020 ◽  
Vol 18 (8) ◽  
pp. 2341-2359
Author(s):  
Yaohua Zang ◽  
Gang Bao ◽  
Xiaojing Ye ◽  
Hongyuan Zha ◽  
Haomin Zhou
Keyword(s):  
Differential Equation ◽  
Stochastic Differential Equation ◽  
Equation Approach
Sign in / Sign up

Export Citation Format

Share Document