Results 51 to 60 of about 3,059,060 (366)

Microgastrinae (Hymenoptera: Braconidae) parasitizing Epirrita autumnata (Lepidoptera: Geometridae) larvae in Fennoscandia with description of Cotesia autumnatae Shaw, sp. n. [PDF]

open access: yes, 2013
The microgastrine subset of hymenopteran parasitoids of the geometrid Epirrita autumnata is investigated in Fennoscandia. Ecology, including population dynamics, of the moth has been intensively studied in northern and mountainous Finland, Norway and ...
Klemola, T   +6 more
core   +2 more sources

On a generalized population dynamics equation with environmental noise [PDF]

open access: yesStatistics & Probability Letters, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rongrong Tian, Jinlong Wei, Jiang-Lun Wu
openaire   +4 more sources

Mapping Population Dynamics at Local Scales Using Spatial Networks

open access: yesComplexity, 2021
Nowadays, around half of the global population lives in urban areas. This rate is expected to increase up to two-thirds by the year 2050. Most studies analyze urban dynamics in wide geographic ranges, focusing mainly on cities.
José Balsa-Barreiro   +2 more
doaj   +1 more source

On the Validity of Neural Mass Models

open access: yesFrontiers in Computational Neuroscience, 2021
Modeling the dynamics of neural masses is a common approach in the study of neural populations. Various models have been proven useful to describe a plenitude of empirical observations including self-sustained local oscillations and patterns of distant ...
Nicolás Deschle   +6 more
doaj   +1 more source

Evolution of Music by Public Choice [PDF]

open access: yes, 2012
Music evolves as composers, performers, and consumers favor some musical variants over others. To investigate the role of consumer selection, we constructed a Darwinian music engine consisting of a population of short audio loops that sexually reproduce ...
Adami   +9 more
core   +1 more source

Border Collision Bifurcations in a Generalized Model of Population Dynamics [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2016
We analyze the dynamics of a generalized discrete time population model of a two‐stage species with recruitment and capture. This generalization, which is inspired by other approaches and real data that one can find in literature, consists in considering no restriction for the value of the two key parameters appearing in the model, that is, the natural
Ladino, L.   +3 more
openaire   +4 more sources

Viability of Pentadesma in reduced habitat ecosystems within two climatic regions with fruit harvesting

open access: yesJournal of Biological Dynamics, 2022
Habitat loss and harvesting of non-timber forest products (NTFPs) significantly affect the population dynamics. In this paper, we propose a general mathematical modelling approach incorporating the impact of habitat size reduction and non-lethal ...
Maria C. A. Leite   +4 more
doaj   +1 more source

The Dynamics of Specialization and Generalization within Biological Populations

open access: yesAdvances in Complex Systems, 1998
We develop an abstract model to explore specialization and generalization in task performance by individuals within biological populations. Individuals follow simple rules of increasing and decreasing task propensities that could, for example, be based on learning and forgetting.
Spencer, AJ, Couzin, ID, Franks, NR
openaire   +3 more sources

Condition-Dependent Neural Dimensions Progressively Shift during Reach to Grasp

open access: yesCell Reports, 2018
Summary: Neural population space analysis was performed to assess the dimensionality and dynamics of the neural population in the primary motor cortex (M1) during a reach-grasp-manipulation task in which both the reach location and the object being ...
Adam G. Rouse, Marc H. Schieber
doaj   +1 more source

Construction of Reducible Stochastic Differential Equation Systems for Tree Height–Diameter Connections

open access: yesMathematics, 2020
This study proposes a general bivariate stochastic differential equation model of population growth which includes random forces governing the dynamics of the bivariate distribution of size variables.
Martynas Narmontas   +2 more
doaj   +1 more source

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