Results 151 to 160 of about 15,849 (295)

Urban birds' detectability is affected by inter‐ and intraspecific variation in shyness

open access: yesIbis, EarlyView.
Detection probabilities differ between bird species as a function of their life history and ecological and behavioural traits, inevitably introducing bias in their abundance and occupancy estimates. However, the effects of behavioural traits such as species shyness and vigilance on detectability remain poorly understood.
Peter Mikula   +3 more
wiley   +1 more source

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

open access: yesInternational 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   +3 more
wiley   +1 more source

Simple Python‐based methods for analysis and drift‐correction of STM images

open access: yesJournal of Microscopy, EarlyView.
Abstract A successful scanning tunnelling microscopy (STM) experiment relies on both delicate sample preparation and measurement, and careful image filtering and analysis to provide clear and solid results. Processing and analysis of STM images may result in a tricky task, due to the complexity and specificity of the probed systems.
Francesco Cazzadori   +3 more
wiley   +1 more source

Regional Volatility Linkages: Impact of Neighbouring Currencies on Nigeria's Currency Instability

open access: yesEkonometria
This study examines the effect of the exchange rate volatility of currencies of countries bordering Nigeria, namely the Benin Republic, Niger, Chad and the Cameroon Republic on Nigeria's exchange rate volatility using monthly observations for 1st January
Abdurrauf Babalola, Kudu Ibn Muhammad
doaj  

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