Results 221 to 230 of about 3,426,931 (297)

Residency and Space Use of Endangered Smoothhound Sharks (Mustelus mustelus) in Relation to Marine Protection and Demersal Longline Fishing Along South Africa's South Coast

Fisheries Management and Ecology, EarlyView.
ABSTRACT Shark populations are declining globally and the effectiveness of marine protected areas (MPAs) as a conservation tool may vary by species and environmental context. This study assessed space use and residency of smoothhound sharks (Mustelus mustelus)—an endangered, yet highly exploited shark—in relation to spatial protection and fishing risk ...
Eugin Bornman, Taryn S. Murray, Neil Hammerschlag, Enrico Gennari   +3 more
wiley   +1 more source

Specification Tests for Jump‐Diffusion Models Based on the Characteristic Function

International Statistical Review, EarlyView.
Summary Goodness‐of‐fit tests are suggested for several popular jump‐diffusion processes. The suggested test statistics utilise the marginal characteristic function of the model and its L2‐type discrepancy from an empirical counterpart. Model parameters are estimated either by minimising the aforementioned L2‐type discrepancy or by maximum likelihood ...
Gerrit Lodewicus Grobler, Denis Belomestny, Simos George Meintanis, Emanuele Taufer   +3 more
wiley   +1 more source

Modeling constrained tumor evolution through hybrid Ornstein-Uhlenbeck and branching dynamics. [PDF]

iScience
Kim SH.
europepmc   +1 more source

Hybrid finite element and Brownian dynamics method for charged particles. [PDF]

J Chem Phys, 2016
Huber GA, Miao Y, Zhou S, Li B, McCammon JA.   +4 more
europepmc   +1 more source

The expected inflation risk premium in the U.S. stock market

Journal of Financial Research, EarlyView.
Abstract This article studies how expected inflation risk affects asset prices. We propose an ex‐ante, tradable proxy for this risk, derived from the term spread of gold futures prices. Using cross‐sectional and time series asset pricing tests, we show how an increase in expected inflation risk lowers contemporaneous prices and raises equity returns ...
Pascal Letourneau, Gabriel J. Power, Garrett C. C. Smith   +2 more
wiley   +1 more source

The Narrative Construction of Internal Organizational Legitimacy

Journal of Management Studies, EarlyView.
Abstract Organizations torn by significant contradictions may struggle to maintain internal legitimacy. Taking a narrative perspective, and drawing on a case study of Walgreens, a Fortune 500 retail pharmacy, we develop a process model that shows how organizations with an entrenched conflict in their official narratives manage the resulting polyphony ...
Kerrie E. Howard, Andrew D. Brown
wiley   +1 more source

Drift-diffusion dynamics of hippocampal replay. [PDF]

PLoS Comput Biol
Wu Z, Wei XX.
europepmc   +1 more source

Going silent? Evidence for independent losses of acoustic communication in tree crickets (Insecta, Orthoptera, Grylloidea, Oecanthidae)

Journal of Systematics and Evolution, EarlyView.
Our ancestral state reconstruction in tree crickets reveals multiple independent and irreversible losses of sound‐producing and ‐receiving structures, supporting the convergent evolution of the silent phenotype. We demonstrate strong evolutionary integration between forewings and tympana, although the discovery of ‘silent listeners′ and ‘deaf singers ...
Lucas Denadai de Campos, Jorge Alves Audino, Silvio Shigueo Nihei, Laure Desutter‐Grandcolas   +3 more
wiley   +1 more source

Characterizing cellular receptor dynamics in live fluorescence imaging using stochastic modeling and machine learning. [PDF]

iScience
Nardi G, Sano MS, Bilay M, Brelot A, Olivo-Marin JC, Lagache T.   +5 more
europepmc   +1 more source

Functional Vašiček Model

Journal of Time Series Analysis, EarlyView.
ABSTRACT We propose a new formulation of the Vašičekmodel within the framework of functional data analysis. We treat observations (continuous‐time rates) within a suitably defined trading day as a single statistical object. We then consider a sequence of such objects, indexed by day.
Piotr Kokoszka, Neda Mohammadi, Leonardo Santoro, Hong Miao, Haonan Wang   +4 more
wiley   +1 more source