Results 91 to 100 of about 6,758,042 (253)

Programmed unmanned aerial vehicles show great potential for monitoring marine megafauna in specific areas of interest

Remote Sensing in Ecology and Conservation, EarlyView.
Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann, Valdemar Palmqvist, Johanna Stedt   +2 more
wiley   +1 more source

Application of Gompertz-Poisson Distribution in LifetimeTheory

پژوهش‌های ریاضی, 2017
Gompertz-Poisson distribution is a three-parameter lifetime distribution with increasing, decreasing, increasing-decreasing and unimodal shape failure rate function and a composition of Gompertz and Poisson distributions cut at zero point that in this ...
Shahram Yaghoubzadeh Shahrestani
doaj  

Evaluation of the Sex and Species Distribution, Breeding, and Life Expectancy of Zoo‐Housed Chameleons

Zoo Biology, EarlyView.
ABSTRACT More than a third of the 202 identified chameleon species are classified as “vulnerable” or “critically endangered”. No data is available regarding the life expectancy of chameleons kept in zoos. The objectives of this study were to determine the sex and species distribution of chameleons kept in zoological institutions, and to assess their ...
Amélie Aduriz, Floriane Plard, Claire Vergneau‐Grosset   +2 more
wiley   +1 more source

Some characterizations of the exponentiated Gompertz distribution [PDF]

International Mathematical Forum, 2014
In this article, we discuss some characterizations of the exponentiated Gompertz distribution. The moments, quantiles, mode, mean residual lifetime, mean deviations and Renyi entropy have been obtained. In addition, we introduce the density, survival and hazard functions and determine the important result about the curve of the distribution and nature ...
Hanaa H. Abu-Zinadah, Anhar S. Aloufi
openaire   +1 more source

A generalized Gompertz promotion time cure model and its fitness to cancer data

Heliyon
The cure models based on standard distributions like exponential, Weibull, lognormal, Gompertz, gamma, are often used to analyze survival data from cancer clinical trials with long-term survivors.
Ayesha Tahira, Muhammad Yameen Danish
doaj   +1 more source

A Joint Pest Management Model for the Bean Fly Complex, Ophiomyia spencerella and Ophiomyia phaseoli (Diptera: Agromyzidae)

Journal of Applied Entomology, EarlyView.
ABSTRACT The common bean is an important crop in Eastern Africa for smallholder farmers, yet yields are often reduced due to pests, particularly Ophiomyia spencerella and Ophiomyia phaseoli. These species are partially sympatric and commonly known as the bean fly. Here, based on the similarity of their life history and developmental biology, field data
Elizabeth A. Finch, Suzy V. Wood, Bryony Taylor, Stacey Odunga, Patrick Kalama, MaryLucy Oronje, Duncan Chacha, Norbert Maczey, Tim Beale, Alyssa Lowry, Sean T. Murphy   +10 more
wiley   +1 more source

Unmanned aerial vehicle–based spatiotemporal phenotyping and growth modeling for forecasting potato yield

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Monitoring spatial variations in plant growth and forecasting yield before harvest provides valuable insights for optimizing agronomic decision‐making in potato (Solanum tuberosum L.) cultivation. Although unmanned aerial vehicle (UAV)‐based remote sensing has recently enabled the development of tuber fresh weight (TW) estimation models, their
Yuto Imachi, Kunihiro Tanaka, Minato Miyauchi, Kyosuke Miyamoto, Masahiro Okada, Pieter M. Blok, Wei Guo, Hiroyoshi Iwata   +7 more
wiley   +1 more source

Multi‐Metric Monitoring: Comparing Occupancy and Abundance Based Metric Sensitivity for Detecting Threatened Species Responses to Environmental Change

Global Change Biology Communications, Volume 1, Issue 2, June 2026.
Abundance and occupancy provide complementary but non‐equivalent signals of threatened species change. Here, their relationship was nonlinear and responses to environmental change were context dependent, showing that no single metric captures all population responses and that combining both can better inform conservation action under global change ...
Tim S. Jessop, Graeme R. Gillespie, Ben Hope, Elliot Webb, Matt Clements, Nicole Gallahar, Mez Kocyigit, Mark Le Pla   +7 more
wiley   +1 more source

A New Distribution for Multiplicities in Leptonic and Hadronic Collisions at High Energies

Advances in High Energy Physics, 2018
Charged particles' production in the e+e-, p¯p, and pp collisions in full phase space as well as in the restricted phase space slices, at high energies, is described with predictions from shifted Gompertz distribution, a model of adoption of innovations.
Ridhi Chawla, M. Kaur
doaj   +1 more source

Analysis of logistic growth models [PDF]

, 2001
A variety of growth curves have been developed to model both unpredated, intraspecific population dynamics and more general biological growth. Most successful predictive models are shown to be based on extended forms of the classical Verhulst logistic ...
Tsoularis, A.
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