Results 201 to 210 of about 11,641,731 (252)

Capturing Heterogeneous Time‐Variation in Covariate Effects in Non‐Proportional Hazard Regression Models

open access: yesBiometrical Journal, Volume 68, Issue 5, October 2026.
ABSTRACT A central focus in survival analysis is examining how covariates affect survival time. These covariate effects are often found to be either time‐varying, heterogeneous—such as being specific to patients, treatments, or subgroups—or exhibit both characteristics simultaneously. While the standard model, the Cox proportional hazards model, allows
Niklas Hagemann   +2 more
wiley   +1 more source

On the Design of a Class of Analog Filters Whose Impulse Response Is a Mittag‐Leffler Function

open access: yesInternational Journal of Circuit Theory and Applications, Volume 54, Issue 10, Page 5173-5182, October 2026.
Fractional‐order filters whose impulse response is a Mittag‐Leffler (M‐L) function in any of its known forms are summarized in this work. Simulation results using Cadence and experimental results using an FPAA validate the introduced concept. ABSTRACT Fractional‐order filters whose impulse response is a Mittag‐Leffler (M‐L) function in any of its known
Julia Nako   +3 more
wiley   +1 more source

Simplified Small‐Signal Modeling Method for Non‐Isolated High Step‐Up Converters

open access: yesInternational Journal of Circuit Theory and Applications, Volume 54, Issue 10, Page 4859-4875, October 2026.
A generalized small‐signal modeling methodology for a family of non‐isolated high step‐up DC‐DC converters is proposed. ABSTRACT This work presents a generalized small‐signal modeling methodology for a family of DC–DC converters based on the four‐state switching cell with a wide conversion range (WCR‐4SSC) operating in continuous conduction mode (CCM).
Samuel Antonio Macedo de Oliveira   +3 more
wiley   +1 more source

Assessing Habitat Suitability and Exposure of the Endemic Vasconcellea candicans Under Climate Change and Urban Growth in Lima, Peru

open access: yesEcology and Evolution, Volume 16, Issue 10, October 2026.
This study integrated ensemble species distribution modelling and urban growth projections to evaluate current and future habitat suitability of V. candicans in the lomas ecosystems surrounding Lima under climate change and urban expansion scenarios. Results identified 2891 km2 of current high‐suitability habitat, with strong scenario‐dependent future ...
Rebeca M. Cruz‐Zegarra   +4 more
wiley   +1 more source

The projected risk of plant invasions on the peri‐Antarctic islands under climate change

open access: yesEcography, Volume 2026, Issue 10, October 2026.
The peri‐Antarctic islands have largely been shielded from alien plant species due to low human pressure, limited introduction pathways, and local harsh climates. However, climate change is expected to lower these barriers. We assess the vulnerability of 12 peri‐Antarctic islands to invasion by 2220 plant species invasive in at least one region of the ...
Tom Vorstenbosch   +8 more
wiley   +1 more source

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