Instilling Reverence for Montessori Materials Through Rituals of Grace and Courtesy

This action research studied the impact of grace and courtesy lessons on the classroom environment. The study occurred in a private Montessori elementary (6-9 year old) classroom. Eighteen students received daily presentations of grace and courtesy lessons over a four-week period for a total of 20 lessons. Sources of data included photographs, environmental assessments, observations and student evaluations. The presenting of grace and courtesy lessons resulted in improved assessments of the classroom environment, decreased teacher intervention when material misuse was observed and an increase of positive teacher interaction. Students began to complete the entire process or ritual of a work in a Montessori classroom, from the preparation of the workspace to returning the material to its original place on the shelf. Grace and courtesy lessons have positively impacted the classroom environment and will continue to be presented often

Spatial oscillations in the spontaneous emission rate of an atom inside a metallic wedge

A method of images is applied to study the spontaneous emission of an atom inside a metallic wedge with an opening angle of $\pi/N$, where N is an arbitrary positive integer. We show the method of images gives a rate formula consistent with that from Quantum Electrodynamics. Using the method of images, we show the correspondence between the oscillations in the spontaneous emission rate and the closed-orbits of emitted photon going away and returning to the atom inside the wedge. The closed-orbits can be readily constructed using the method of images and they are also extracted from the spontaneous emission rate.Comment: 8 figure

Observed Effects of a Changing Step-Edge Density on Thin-Film Growth Dynamics

We grew SrTiO3 on SrTiO3 [001] by pulsed laser deposition, while observing x-ray diffraction at the (0 0 .5) position. The drop dI in the x-ray intensity following a laser pulse contains information about plume-surface interactions. Kinematic theory predicts dI/I = -4sigma(1-sigma), so that dI/I depends only on the amount of deposited material sigma. In contrast, we observed experimentally that |dI/I| < 4sigma(1-sigma), and that dI/I depends on the phase of x-ray growth oscillations. The combined results suggest a fast smoothing mechanism that depends on surface step-edge density.Comment: 4 figure

Human Problems in Industry

127 pages : illustrations (some color) ; 22 cm. Series: New democracy. With 12 pictorial charts in colour designed by the Isotype Institute and 80 photographs. Designed and produced by Adprint Ltd. London --title page verso. Contents: Introduction -- Choosing jobs and workers -- Doing the job -- Warning signals -- Why we work -- Outlook for the future. Reading list : page [128]. Includes bibliographical references. Added Author: Marie Neurath, designer.https://digitalcommons.risd.edu/specialcollections_books_graphicdesign/1000/thumbnail.jp