Introducing Theranostics Journal - From the Editor-in-Chief

Theranostics is a multidisciplinary journal that publishes innovative and original research papers reflecting the field of molecular imaging, molecular therapeutics, multifunctional nanoparticle platforms, image-guided therapy, and translational nanomedicine. A broad spectrum of biomedical research that can be applied to future theranostic applications is encouraged

Teachers’ Contexts, Their Instruction and Math Achievement: Evidence from the 2018 TALIS-PISA Link Data

This study uses secondary data analysis of the 2018 TALIS-PISA link data combined with content analysis of policy and media artifacts to describe the relationship between teacher professionalization and working climate, self-efficacy, instruction, and mathematics achievement. In preliminary SEM models we identify three types of classroom instruction, Instruction Focused, Management Focused, and Comprehensive, based on a latent profile analysis of frequency of teacher behaviors. We also find that professionalization and working climate significantly predict teacher self-efficacy and instruction, but that instruction does not predict achievement when including school covariates. We also describe key differences in professionalization, climate, and math achievement between PISA link countries

Near-field Thermal Radiation Between Two Closely Spaced Glass Plates Exceeding Planck’s Blackbody Radiation Law

This work reports experimental studies on radiative heat flux between two parallel glass surfaces. Small polystyrene particles are used as spacers to maintain a micron-sized gap between two optical flats. By carefully choosing the number of particles and performing the measurement in a high-vacuum environment, the experiment is designed to ensure that the radiative heat flux is the dominant mode of heat transfer. The experimental results clearly demonstrate that the radiative heat flux across micron-sized gaps can exceed the far-field upper limit given by Planck’s law of blackbody radiation. The measured radiative heat flux shows reasonable agreement with theoretical predictions