The role of the school media specialist as perceived by teachers, principals, and school media specialists

The purpose of this study was to determine the role of the school media specialist as perceived by principals, teachers, and school media specialists. According to the current literature, the role of the school media specialists is multi-faceted. The role includes teacher, information specialist, technology person, and instructional consultant. A survey was prepared to determine if principals, teachers, and media specialists perceived the role in the same way. Two principals and thirty-five teachers were surveyed for this project. Three school media specialists were interviewed. The participants were from two districts in Atlantic County in the state of New Jersey. There were two schools in one district and one school in the second district. For the most part, principals, teachers, and media specialists defined the role of media specialist as outlined in the current literature. One or two areas in each role needed to be clarified by the school media specialist. The role of instructional consultant needs to be clarified, and the involvement of the school media specialist in technology should have been outlined. The school media specialists should keep the staff and principals updated and aware concerning the role the school media specialist fills

New light on the ‘Drummer of Tedworth’: conflicting narratives of witchcraft in Restoration England

This paper presents a definitive text of hitherto little-known early documents concerning ‘The Drummer of Tedworth’, a poltergeist case that occurred in 1662-3 and became famous not least due to its promotion by Joseph Glanvill in his demonological work, Saducismus Triumphatus. On the basis of these and other sources, it is shown how responses to the events at Tedworth evolved from anxious piety on the part of their victim, John Mompesson, to confident apologetic by Glanvill, before they were further affected by the emergence of articulate scepticism about the case

Electrical leakage phenomenon in heteroepitaxial cubic silicon carbide on silicon

© 2018 Author(s). Heteroepitaxial 3C-SiC films on silicon substrates are of technological interest as enablers to integrate the excellent electrical, electronic, mechanical, thermal, and epitaxial properties of bulk silicon carbide into well-established silicon technologies. One critical bottleneck of this integration is the establishment of a stable and reliable electronic junction at the heteroepitaxial interface of the n-type SiC with the silicon substrate. We have thus investigated in detail the electrical and transport properties of heteroepitaxial cubic silicon carbide films grown via different methods on low-doped and high-resistivity silicon substrates by using van der Pauw Hall and transfer length measurements as test vehicles. We have found that Si and C intermixing upon or after growth, particularly by the diffusion of carbon into the silicon matrix, creates extensive interstitial carbon traps and hampers the formation of a stable rectifying or insulating junction at the SiC/Si interface. Although a reliable p-n junction may not be realistic in the SiC/Si system, we can achieve, from a point of view of the electrical isolation of in-plane SiC structures, leakage suppression through the substrate by using a high-resistivity silicon substrate coupled with deep recess etching in between the SiC structures

Comparison of Form and Color Fields

Many studies have been made of the color fields of the eye and some consideration has been given the form fields. With the invention of the microscope by Leeuwenhoeck in 1722, who first made a study of the retina of the frog, much interest has been shown in the structure and functions of the retina. Some of the world\u27s greatest histologists such as Cajal, Mueller and others have studied the structural characteristics of the retina. Very little attention has been given the functions of the retina from the point of view of psychology

Membrane amplitude and triaxial stress in twisted bilayer graphene deciphered using first-principles directed elasticity theory and scanning tunneling microscopy

Twisted graphene layers produce a moir\'e pattern (MP) structure with a predetermined wavelength for given twist angle. However, predicting the membrane corrugation amplitude for any angle other than pure AB-stacked or AA-stacked graphene is impossible using first-principles density functional theory (DFT) due to the large supercell. Here, within elasticity theory we define the MP structure as the minimum energy configuration, thereby leaving the height amplitude as the only unknown parameter. The latter is determined from DFT calculations for AB and AA stacked bilayer graphene in order to eliminate all fitting parameters. Excellent agreement with scanning tunneling microscopy (STM) results across multiple substrates is reported as function of twist angle.Comment: to appear in Phys. Rev.

Polarization selection rules for inter-Landau level transitions in epitaxial graphene revealed by infrared optical Hall effect

We report on polarization selection rules of inter-Landau level transitions using reflection-type optical Hall effect measurements from 600 to 4000 cm-1 on epitaxial graphene grown by thermal decomposition of silicon carbide. We observe symmetric and anti-symmetric signatures in our data due to polarization preserving and polarization mixing inter-Landau level transitions, respectively. From field-dependent measurements we identify that transitions in decoupled graphene mono-layers are governed by polarization mixing selection rules, whereas transitions in coupled graphene mono-layers are governed by polarization preserving selection rules. The selection rules may find explanation by different coupling mechanisms of inter-Landau level transitions with free charge carrier magneto-optic plasma oscillations