Results 111 to 120 of about 6,081 (225)

Optimised Molecular Traps and Conjugated Structures for Superior High‐Temperature Capacitive Performance in Polyimide

High Voltage, EarlyView.
ABSTRACT In the fields of automotive electronics, power electronics, and aerospace, environmental conditions are often extremely harsh, particularly for materials that must endure high temperatures, high power and require high stability. The degradation of capacitance performance in polymer dielectrics under high electric fields and elevated ...
Xue Li, Ling Weng, Li Kong, Xiaoming Wang, Houyu Wang, Ze Li, Yuhan Li, Xiaorui Zhang, Lizhu Guan, Zijian Wu   +9 more
wiley   +1 more source

Enhancing Hydrophobic Stability of Silicone Rubber Insulators Under High‐Voltage Direct Current Stress Through Optimised Nano‐Fumed Silica Surface Area: A Dynamic Drop Test Study

High Voltage, EarlyView.
ABSTRACT The long‐term hydrophobic stability of silicone rubber (SiR) insulators is essential for their reliability in high‐voltage direct current (HVDC) applications. This study investigates the effect of nano‐silica fillers with varying specific surface areas (SSA = 120, 200 and 300 m2/g) and different concentrations of alumina trihydrate (ATH ...
Mahmoud A. Ali, Xingliang Jiang, Samir I. Gadow, Ruta W. Deusdedith   +3 more
wiley   +1 more source

ForestForTrees: An R package to infer forest structure from remote sensing data

Methods in Ecology and Evolution, EarlyView.
Abstract Estimating forest size‐abundance distributions is essential for understanding demographic processes and structural dynamics. Remote sensing provides broad coverage but often misses smaller trees hidden beneath the canopy, complicating inference of the full size distribution.
Adam J. Eichenwald, John M. Grady, Alyson East, Noah Charney, Sydne Record   +4 more
wiley   +1 more source

Probabilidade do erro do tipo I nas cartas X e S de Shewhart sob não normalidade Probability of type I error in X and S Shewhart Control Charts under non-normality

Production, 2012
O objetivo deste artigo é verificar o comportamento das cartas de média e desvio padrão de Shewhart em relação à probabilidade do erro do tipo I quando da violação da suposição de normalidade.
André Luis Korzenowski, Liane Werner
doaj  

Using wingbeat frequency to estimate mass gain

Methods in Ecology and Evolution, EarlyView.
Abstract Energy intake is a fundamental currency in ecology that is critical to reproductive success, survival and lifetime fitness. Measuring foraging success in wild animals via biologgers has been a long‐standing challenge but is essential to understanding the mechanisms underlying population dynamics and species distributions.
Allison Patterson, Marie Auger‐Méthé, Kyle Elliott   +2 more
wiley   +1 more source

Challenging and diagnosing structured population models by testing predictions from stochastic demography

Methods in Ecology and Evolution, EarlyView.
Abstract Structured population models are parameterized to accurately project expected population sizes, stage/state distributions and population growth rates, but they also predict the variation in outcomes among individuals, such as the variance and skewness of lifetime reproductive output (LRO) and lifespan, the probability of never reproducing, and
Stephen P. Ellner, Robin E. Snyder, Daniel T. Blumstein, Dylan Z. Childs, Joshua C. Fowler, Christina M. Hernández, Julien G. A. Martin, María Paniw, Yngvild Vindenes   +8 more
wiley   +1 more source

A Bayesian Analysis in the Presence of Covariates for Multivariate Survival Data: An example of Application Análisis bayesiano en presencia de covariables para datos de sobrevivencia multivariados: un ejemplo de aplicación

Revista Colombiana de Estadística, 2011
In this paper, we introduce a Bayesian analysis for survival multivariate data in the presence of a covariate vector and censored observations. Different "frailties" or latent variables are considered to capture the correlation among the survival times ...
JORGE ALBERTO ACHCAR, CARLOS APARECIDO SANTOS   +1 more
doaj  

The public agglomeration effect: Urban–rural divisions in government efficiency and political preferences

American Journal of Political Science, EarlyView.
Abstract Why and when do cities vote for the left? The emergence of the urban–rural divide in the United States in the 1930s is inconsistent with canonical theories of cleavages. This paper introduces an explanation: agglomeration effects. The provision of government services is more efficient in urban environments because of nonrivalries, economies of
Theo Serlin
wiley   +1 more source

Why did Putin invade Ukraine? A theory of degenerate autocracy

American Journal of Political Science, EarlyView.
Abstract Many dictatorships end up with a series of disastrous decisions such as Hitler's attack on the Soviet Union or Saddam Hussein's aggression against Kuwait. Even if a certain policy choice is not ultimately fatal for the regime, such as Mao's Big Leap Forward or the Pol Pot's collectivization drive, they typically involve both a miscalculation ...
Georgy Egorov, Konstantin Sonin
wiley   +1 more source

Kinetic Modeling of Vitamin C Degradation for Predicting Shelf Life in Tropical Juices Made from Camu Camu and Naranjilla Under Accelerated Storage Conditions. [PDF]

Foods
Fernandez-Rosillo F, Mori-Mestanza D, Cabrejos-Barrios AS, Medina-Mendoza M, Cabrejos-Barrios EM, León-Roque N, Hernández-Martínez E, Rivera-Botonares R, Castro-Alayo EM, Minchán-Velayarce H, Balcázar-Zumaeta CR.   +10 more
europepmc   +1 more source