Results 121 to 130 of about 37,981 (219)

Gompertz: A Scilab Program for Estimating Gompertz Curve Using Gauss-Newton Method of Least Squares [PDF]

A computer program for estimating Gompertz curve using Gauss-Newton method of least squares is described in detail. It is based on the estimation technique proposed in Reddy (1985).
Surajit Ghosh Dastidar
core   +1 more source

An estimation of the pattern of diffusion of mobile phones: the case of Colombia [PDF]

In this paper we fond that the difusion pattern of mobile telephony in Colombia can be best haracterised as following a Logistic curve. Although in recent years the rate of growth of mobile phone subscribers has started to slow down, we find evidence ...
Jesus Otero, Luis Fernando Gamboa
core  

Estimation of growth in intact grazing Holstein steers

Revista Colombiana de Ciencias Pecuarias, 2013
Summary Background: animal growth does not follow a linear pattern. Accordingly, fitted non-linear models are used to analyze the relationship between growth rate and age. Objective: to assess the ability of several mathematical models (Gompertz, Brody,
Raul Velásquez Vélez, Ricardo R Noguera, Sandra L Posada, Alvaro Hoyos Velásquez, Juan Manuel Cerón   +4 more
doaj  

Dynamic assessment of the ecological value of cultivated land based on the Gompertz curve model: A case study of Lezhi County, China. [PDF]

PLoS One
Yuan L, Chen H, Xu J, Wang H.
europepmc   +1 more source

Predicting sugar beet leaf area index: evaluating performance of double sigmoid functions under different irrigation and plant density scenarios. [PDF]

Sci Rep
Shirazi SHM, Razzaghi F, Shabani A, Sepaskhah AR, Khozaei M.   +4 more
europepmc   +1 more source

A general Richards family growth curve fit in European livestock for use in physiologically-based toxicokinetic modelling. [PDF]

BMC Vet Res
Inauen D, Lautz LS, Hendriks AJ, Gehring R.   +3 more
europepmc   +1 more source

Predicting the demand of elderly care beds by a novel recursive grey Gompertz model: case studies of Jiangsu and Shanghai, China. [PDF]

BMC Geriatr
Guo X, Wang Y, Zhu X, Wu Y, Yang Y, Jin J.   +5 more
europepmc   +1 more source

Gompertz proportional hazards survival analysis of time to first birth among childbearing women in Somaliland (2020): a cross-sectional study. [PDF]

BMJ Open
Hussein MA, Yousuf AM, Muse AH, Esse AA, Abdi AN, Osman AA, Abdikarim H, Chesneau C.   +7 more
europepmc   +1 more source

Time-constant absolute effect measures for time-to-event outcomes. [PDF]

BMC Med Res Methodol
Kuss O, Hoyer A.
europepmc   +1 more source

The Gompertz-Makeham distribution

, 1997
This work is about the Gompertz-Makeham distribution. The distribution has been applied plenty of times. The properties of the Gompertz-Makeham distribution investigated in this work are unimodality of the Gompertz-Makeham distribution and relationship between the median value and the mean residual life time of the Gompertz-Makeham distribution.
openaire   +1 more source