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Robert J. Sternberg,Elena L. Grigorenko,Linda Jarvin 한국교육개발원 2006 KEDI Journal of Educational Policy Vol.3 No.2
This article describes two projects based on Robert J. Sternberg’s triarchic theory of successful intelligence and designed to provide theory‐based testing for abilities and for identification of the gifted. The first, Rainbow Project, provided a supplementary test of analytical, practical, and creative skills to augment the SAT in predicting college performance. The Rainbow measures enhanced predictive validity for college GPA relative to high school GPA and the SAT and decreased ethnic‐group disparities in test scores. The second, Aurora Project, identifies gifted students in the upper elementary grades (for children roughly ages 9‐12). This project is now in progress. The two projects demonstrate the potential value of including a broader range of abilities in assessments to identify gifted children.
Synthesis of high-purity α-Al2O3 from boehmite by high temperature vacuum treatment
A.Z. Zhuk,M.S. Vlaskin,A.V. Grigorenko,S.A. Kislenko,E.I. Shkolnikov 한양대학교 세라믹연구소 2016 Journal of Ceramic Processing Research Vol.17 No.9
In this study a simple and environmentally benign method for conversion of technical purity Al into high-purity alumina isdescribed. The method is based on hydrothermal oxidation of aluminium and subsequent high temperature purification ofaluminium oxide. Deep purification is achieved by high-temperature vacuum treatment of aluminium oxide at temperatureof 1600-1750 oC. Structure and chemical composition of reaction products obtained at experimental conditions at differentsteps of method are examined in presented work. It has been shown that by proposed method the Al powder of technical purity(99.8 wt.%) can be converted into high-purity alumina (99.997 wt.%). Molecular mechanics simulation of impuritiessegregation to the (0001) surface of alumina crystal has been carried out. The simulation revealed a correlation between thestrength of segregation and the efficiency of impurities removal from alumina during high-temperature vacuum treatment.
Strong Light-Matter Interactions in Heterostructures of Atomically Thin Films
Britnell, L.,Ribeiro, R. M.,Eckmann, A.,Jalil, R.,Belle, B. D.,Mishchenko, A.,Kim, Y.-J.,Gorbachev, R. V.,Georgiou, T.,Morozov, S. V.,Grigorenko, A. N.,Geim, A. K.,Casiraghi, C.,Neto, A. H. Castro,Nov American Association for the Advancement of Scienc 2013 Science Vol.340 No.6138
<P><B>Atomic Layer Heterostructures—More Is More</B></P><P>The isolation of stable layers of various materials, only an atom or several atoms thick, has provided the opportunity to fabricate devices with novel functionality and to probe fundamental physics. <B>Britnell <I>et al.</I></B> (p. 1311, published online 2 May; see the Perspective by <B>Hamm and Hess</B>) sandwiched a single layer of the transition metal dichalcogenide WS<SUB>2</SUB> between two sheets of graphene. The photocurrent response of the heterostructure device was enhanced, compared to that of the bare layer of WS<SUB>2</SUB>. The prospect of combining single or several-atom-thick layers into heterostructures should help to develop materials with a wide range of properties.</P>