Results 31 to 40 of about 10,188 (188)
Revstat Statistical Journal, 2021 Three conjectures on the standard deviation, skewness and kurtosis of the shifted Gompertz distribution, as the shape parameter increases to +∞, are proved. In this regard, the exponential integral function and polygamma functions are used in the proofs.
Fernando Jiménez Torres
doaj +1 more source
Statistical Inference for the Unit Gompertz Power Series Distribution Using Ranked Set Sampling with Applications [PDF]
Assiut University Journal of Multidisciplinary Scientific ResearchWe present the unit Gompertz-power series distribution class, which is formedby combining unit Gompertz and power series distributions. This new class of distributionsincludes some special cases, such as the unit Gompertz binomial, the unit Gompertz ...
Manal Yousef +2 more
doaj +1 more source
Parameter identification for gompertz and logistic dynamic equations.
PLoS ONE, 2020 In this paper, we generalize and compare Gompertz and Logistic dynamic equations in order to describe the growth patterns of bacteria and tumor. First of all, we introduce two types of Gompertz equations, where the first type 4-paramater and 3-parameter ...
Elvan Akın +3 more
doaj +1 more source
Mathematics, 2020 In this paper, we study a new family of Gompertz processes, defined by the power of the homogeneous Gompertz diffusion process, which we term the powers of the stochastic Gompertz diffusion process.
Eva María Ramos-Ábalos +2 more
doaj +1 more source
Journal of Applied Polymer Science, EarlyView.Mechanistic insights from additive‐assisted plastic degradation guide the design of environmentally adaptive textile fibers. Functional additives enhance oxidative, hydrolytic, enzymatic, and microbial degradation pathways. Translating these strategies requires control of fiber architecture, additive distribution, and environmental interactions ...
Julia Cunniffe +2 more
wiley +1 more source
Energies, 2020 A simple yet accurate photovoltaic (PV) performance curve as a function of satellite-based solar irradiation is necessary to develop a PV power forecasting model that can cover all of South Korea, where more than 35,000 PV power plants are currently in ...
Alba Vilanova +3 more
doaj +1 more source
Fire and Materials, EarlyView.ABSTRACT This study addresses the influence of fibre architecture on the mechanical properties of vacuum‐infused glass fibre reinforced polymer (GFRP) composites at elevated temperatures (ET). Laminates with three different fibre configurations—unidirectional (UD), bidirectional 0°/90° cross‐ply (BD), and ±45° off‐axis angle‐ply (OA) – were tested in ...
Eloísa Castilho +4 more
wiley +1 more source
The inverted Gompertz-Fréchet distribution with applications
Scientific African, 2023 The probability distribution is an important aspect of probability theory because of its vast relevance in almost all human disciplines. Its applicability in finance, medicine, agriculture, actuarial science, demography, and econometrics, to mention but ...
Eno E.E. Akarawak +5 more
doaj +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés +2 more
wiley +1 more source
On Order Restricted Inference in Multi‐Step Stage Life Testing for a General Family of Distributions
Naval Research Logistics (NRL), EarlyView.ABSTRACT Recently, k$$ k $$‐step stage life testing (SLT) has been proposed by Laumen and Cramer (2021) as a natural extension of progressive censoring with fixed censoring times (PC‐FCT) as well as of simple step‐stress accelerated life testing (SSALT).
Erhard Cramer +2 more
wiley +1 more source