#COMMONCORE Project (2017) How Social Media is Changing the Politics of Education

Fueled by impassioned social media activists, the Common Core State Standards have been a persistent flashpoint in the debate over the direction of American education. In this innovative and interactive website we explore the Common Core debate on Twitter. Using a distinctive combination of social network analyses and psychological investigations we reveal both the underlying social structure of the conversation and the motivations of the participants. The central question guiding our investigation is: How are social mediaenabled social networks changing the discourse in American politics that produces and sustains social policy? ABOUT #COMMONCORE PROJECT In the #commoncore Project, authors Jonathan Supovitz, Alan Daly, Miguel del Fresno and Christian Kolouch examine the intense debate surrounding the Common Core State Standards education reform as it played out on Twitter. The Common Core, one of the major education policy initiatives of the early 21st century, sought to strengthen education systems across the United States through a set of specific and challenging education standards. Once enjoying bipartisan support, the controversial standards have become the epicenter of a heated national debate about this approach to educational improvement. By studying the Twitter conversation surrounding the Common Core, we shed light on the ways that social media social networks are influencing the political discourse that, in turn, produces public policy

Antibacterial effect of silver modified TiO

This paper deals with photocatalytic activity of silver treated TiO2 films. The TiO2 films were deposited on glass substrates by plasma enhanced chemical vapor deposition (PECVD) in a vacuum reactor with radio frequency (RF) low temperature plasma discharge in the mixture of oxygen and titanium isopropoxide vapors (TTIP). The depositions were performed under different deposition conditions. Subsequently, the surface of TiO2 films was modified by deposition of silver nanoparticles. Photocatalytic activity of both silver modified and unmodified TiO2 films was determined by decomposition of the model organic matter (acid orange 7). Selected TiO2 samples were used for tests of antibacterial activity. These tests were performed on Gram-negative bacteria Escherichia coli. The results clearly proved that presence of silver clusters resulted in enhancement of the photocatalytic activity, which was up to four times higher than that for pure TiO2 films

St. John's Daily Star, 1919-06-27

The St. John's Daily Star was published daily except Sunday between 17 April 1915 - 23 July 1921

Evaluation and application of a new scintillator‐based heat‐resistant back‐scattered electron detector during heat treatment in the scanning electron microscope

International audienceA new high-temperature detector dedicated to the collection of backscattered electrons is used in combination with heating stages up to 1050°C, in high-vacuum and low-vacuum modes in order to evaluate its possibilities through signal-to-noise ration measurements and different applications. Four examples of material transformations occurring at high temperature are herein reported: grain growth during annealing of a rolled platinum foil, recrystallisation of a multiphased alloy, oxidation of a Ni-based alloy and complex phase transformations occurring during the annealing of an Al-Si coated boron steel. The detector could be potentially adapted to any type of SEM and it offers good opportunities to perform high-temperature experiments in various atmospheres