Results 91 to 100 of about 30,474 (270)
Gompertz survival model parameters: Estimation and sensitivity
Applied Mathematics Letters, 1992 AbstractThe Gompertzian model of survival is a frequently used two parameter survival distribution. Standard parameter estimation techniques, such as regression and maximum likelihood analysis, require knowledge of the actual lifespans for parameter estimation to be successful.
Witten, Matthew, Satzer, William
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Zoo Biology, EarlyView.Female white rhinos in zoos systematically exceed the body mass range for free‐ranging specimens; this is not the case in black rhinos. ABSTRACT The body mass of zoo animals may differ from those in wild populations due to the different environmental and dietary conditions being offered under human‐managed care.
Elisa Garand +7 more
wiley +1 more source
Tropical Animal Science JournalThis study aimed to predict the mature size specifically for body weight, body length, height at withers, and chest circumference in Katjang X Boer crossbred goats.
R. M. Hifzan +3 more
doaj +1 more source
A Dynamic Flexible Partial-Adjustment Model of International Diffusion of the Internet [PDF]
The paper introduces a dynamic, flexible partial-adjustment model and uses it to analyze the diffusion of Internet connectivity. It specifies and estimates desired levels of Internet diffusion and the speed at which countries achieve the target levels ...
Heshmati, Almas, Lee, Minkyu
core
Evidence for the Gompertz Curve in the Income Distribution of Brazil 1978-2005
, 2008 This work presents an empirical study of the evolution of the personal income distribution in Brazil. Yearly samples available from 1978 to 2005 were studied and evidence was found that the complementary cumulative distribution of personal income for 99%
A. Chatterjee +23 more
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British Journal of Mathematical and Statistical Psychology, EarlyView.Abstract Although individuals may exhibit both gradual and abrupt changes in their dynamic properties as shaped by both slowly accumulating influences and acute events, existing statistical frameworks offer limited capacity for the simultaneous detection and representation of these distinct change patterns.
Yanling Li +3 more
wiley +1 more source
Jurnal Ilmu Kehutanan, 2018 This study aims to determine the model of crown width development of the dominant teak tree planted using seeds from clonal seed orchards. The research was carried out in Ngawi Forest Management Unit on the good quality teak compartment having stands age
Ronggo Sadono
doaj +1 more source
Diffusion of Digital Mobile Telephony: Are Developing Countries Different? [PDF]
mobile telephony, technology diffusion, Gompertz model, developing ...
Rouvinen, Petri
core
Statistical Ensemble Theory of Gompertz Growth Model [PDF]
Entropy, 2009 An ensemble formulation for the Gompertz growth function within the framework of statistical mechanics is presented, where the two growth parameters are assumed to be statistically distributed. The growth can be viewed as a self-referential process, which enables us to use the Bose-Einstein statistics picture.
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Journal of Fish Biology, EarlyView.Abstract Life‐history data are often lacking for exploited elasmobranchs, jeopardizing proper management and conservation measures for this vulnerable group. Herein, we provided age and growth estimates for the groovebelly stingray (Dasyatis hypostigma), a medium‐sized, heavily exploited batoid endemic to the southwestern Atlantic Ocean.
Giovanni Arlan Torres +5 more
wiley +1 more source