Exploring Relationships Between Passion and Attitudes Toward Performance Enhancing Drugs in Canadian Collegiate Sport Contexts

The purpose of this study was to explore relationships between passion and attitudes toward performance enhancing drugs (PEDs). Participants were 587 male and female varsity and coed intramural athletes from four Southern Ontario universities. Athletes completed the passion scale (Vallerand et al., 2003) and the performance enhancement attitudes scale (Petróczi, 2006). Full sample regression analyze revealed that higher scores on obsessive passion items were associated with more permissive attitudes toward PEDs (B =, 26, p < .001), while higher scores on harmonious passion items were associated with less permissive attitudes toward PEDs (B = -.29, p < .001). Moreover, obsessive passion emerged as a significant positive predictor of attitudes toward PEDs in all study contexts (i.e., coed recreational athletes, male/female varsity athletes). Implications for sport administrators, study limitations, and possible avenues for future research are discussed

Proof-of-principle of surface detection with air-guided quantum cascade lasers

We report a proof-of-principle of surface detection with air-guided quantum cascade lasers. Laser ridges were designed to exhibit an evanescent electromagnetic field on their top surface that can interact with material or liquids deposited on the device. We employ photoresist and common solvents to provide a demonstration of the sensor setup. We observed spectral as well as threshold currents changes as a function of the deposited material absorption curve. A simple model, supplemented by 2D numerical finite element method simulations, allows one to explain and correctly predict the experimental results

Ye Ink Stand

Letters and comments from contributors and fans in Mythril #

On-chip interference of single photons from an embedded quantum dot and an external laser

In this work, we demonstrate the on-chip two-photon interference between single photons emitted by a single self-assembled InGaAs quantum dot and an external laser. The quantum dot is embedded within one arm of an air-clad directional coupler which acts as a beam-splitter for incoming light. Photons originating from an attenuated external laser are coupled to the second arm of the beam-splitter and then combined with the quantum dot photons, giving rise to two-photon quantum interference between dissimilar sources. We verify the occurrence of on-chip Hong-Ou-Mandel interference by cross-correlating the optical signal from the separate output ports of the directional coupler. This experimental approach allows us to use classical light source (laser) to assess in a single step the overall device performance in the quantum regime and probe quantum dot photon indistinguishability on application realistic time scales.Comment: 5 pages, 3 figure