Erratum: Bifurcation threshold of the delayed van der Pol oscillator under stochastic modulation [Phys. Rev. E 85, 056214 (2012)].

This corrects the article DOI: 10.1103/PhysRevE.85.

Filtration, adsorption and immunodetection of virus using polyelectrolyte multilayer-modified paper.

A new method for detection of viruses has been developed. The entire assay can be performed within 2h, and consists of a polyelectrolyte-multilayer-modified cellulosic filter paper combined with immunodetection. The M13 bacteriophage was used as a model virus.

Bifurcation threshold of the delayed van der Pol oscillator under stochastic modulation.

We obtain the location of the Hopf bifurcation threshold for a modified van der Pol oscillator, parametrically driven by a stochastic source and including delayed feedback in both position and velocity. We introduce a multiple scale expansion near threshold, and we solve the resulting Fokker-Planck equation associated with the evolution at the slowest time scale. The analytical results are compared with a direct numerical integration of the model equation.

Analytical determination of the bifurcation thresholds in stochastic differential equations with delayed feedback.

Analytical expressions for pitchfork and Hopf bifurcation thresholds are given for a nonlinear stochastic differential delay equation with feedback. Our results assume that the delay time τ is small compared to other characteristic time scales, not a significant limitation close to the bifurcation line. A pitchfork bifurcation line is found, the location of which depends on the conditional average , where x(t) is the dynamical variable.

Multiple mini-interviews versus traditional interviews: stakeholder acceptability comparison.

Context: The McGill University Faculty of Medicine undertook a pilot, simulation-based multiple mini-interview (MMI) for medical school applicant selection, which ran simultaneously with traditional unstructured interviews (all applicants underwent both processes). This paper examines major stakeholder (applicants and evaluators) opinions towards the MMI compared with traditional interviews, including perceptions about the feasibility and utility of the MMI.

Methods: A total of 100 candidates applying to McGill University Medical School were enrolled in the pilot comparison of the MMI with the traditional, unstructured interview.