Results 71 to 80 of about 9,149,613 (368)

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Comparative evaluation of hand and power-driven instruments on root surface characteristics: A scanning electron microscopy study

Contemporary Clinical Dentistry, 2011
Aim: The aim of this study was to compare root surface characteristics following root planing with various hand- and power-driven instruments. Materials and Methods: A total of 20 single, rooted teeth were used in this study; two specimens were used as ...
Parveen Dahiya, Reet Kamal, Rajan Gupta, Nymphea Pandit   +3 more
doaj   +1 more source

Scaling in Anti-Plane Elasticity on Random Shear Modulus Fields with Fractal and Hurst Effects

Fractal and Fractional, 2021
The scale dependence of the effective anti-plane shear modulus response in microstructures with statistical ergodicity and spatial wide-sense stationarity is investigated.
Yaswanth Sai Jetti, Martin Ostoja-Starzewski   +1 more
doaj   +1 more source

Universal finite-size scaling amplitudes in anisotropic scaling

, 2001
Phenomenological scaling arguments suggest the existence of universal amplitudes in the finite-size scaling of certain correlation lengths in strongly anisotropic or dynamical phase transitions.
Alcaraz F C, Alcaraz F C, Bausch R, Binder K, Bulirsch R, Cardy J L, Cardy J L, Cardy J L, Carlon E, de Dominicis C, Doi M, Doi M, Droz M, Fisher M E, Fridkin V, Grassberger P, Grassberger P, Grassberger P, Henkel M, Henkel M, Henkel M, Henkel M, Henkel M, Hertz J A, Hinrichsen H, Hooyberghs J, Howard M J, Izmailian N Sh, Janssen H K, Kamphorst Leal da Silva J, Krebs K, Krebs K, Lee B P, Malte Henkel, Marro J, Mendes J F F, Mendes J F F, Neubert B, Peliti L, Peliti L, Peschel I, Privman V, Sachdev S, Schmittmann B, Schütz G M, Selke W, Simon H, Ulrich Schollwöck, Weigel M, Yeomans J M, Ódor G   +50 more
core   +1 more source

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Are boys more vulnerable to stunting? Examining risk factors, differential sensitivity, and measurement issues in Zambian infants and young children

BMC Public Health
Background Stunting remains a considerable public health problem globally, and sex differences in prevalence have been documented. While many risk factors for stunting have been identified, few studies examine how these factors may contribute to sex ...
Amanda L. Thompson, Mathews Onyango, Patricia Sakala, John Manda, Edna Berhane, Mary Pat Selvaggio, Agnes Aongola, Stephanie L. Martin   +7 more
doaj   +1 more source

Density-temperature scaling of the fragility in a model glass-former

, 2013
Dynamical quantities such as the diffusion coefficient and relaxation times for some glass-formers may depend on density and temperature through a specific combination, rather than independently, allowing the representation of data over ranges of density
Sastry, Srikanth, Schröder, Thomas B., Sengupta, Shiladitya   +2 more
core   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Corrections to Scaling in the Phase-Ordering Dynamics of a Vector Order Parameter

, 1999
Corrections to scaling, associated with deviations of the order parameter from the scaling morphology in the initial state, are studied for systems with O(n) symmetry at zero temperature in phase-ordering kinetics.
A. Coniglio, A. Coniglio, A. D. Rutenberg, A. D. Rutenberg, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, C. Castellano, C. Castellano, C. Castellano, C. L. Emmott, F. Corberi, F. Liu, F. Liu, F. Liu, F. Rojas, G. F. Mazenko, G. F. Mazenko, G. F. Mazenko, G. F. Mazenko, H. Toyoki, J. D. Gunton, M. Mondello, M. Siegert, N. Mason, N. P. Rapapa, P. C. Hohenberg, S. Puri, T. J. Newman, T. J. Newman, T. Ohta   +38 more
core   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source