Online research in philosophy

A (Pb0.5Sr0.5)Sr2(Y0.5Ca0.5)Cu2Oy sample was prepared and the obtained Tc(onset) and Tc(zero) were 109 K and 51 K, respectively. A comparison of the M2+ ionic radius, lattice constants a and c, and the interatomic distance sum of the Cu-O(2) and (Pb,M)-O(2) samples in the (Pb0.5M0.5)Sr2(Y0.5Ca0.5)Cu2Oy system was made, where M = Sr, Ca, Mg, Hg, Cd or Cu. It was found that (...) if the atomic radius of M2+, which is in the (Pb,M)-O plane of the (Pb,M)-1212 specimen, is larger, then the sample will have a higher Tc(onset) and the major effect of the M2+ on the Tc(onset) of (Pb0.5M0.5)Sr2(Y0.5Ca0.5)Cu2Oy samples was to change the interatomic distance (bond distance) sum of Cu-O(2) and (Pb,M)-O(2) when the Cu2+ ion was exchanged for an M2+ ion. (shrink)

Notes on stratification, education, and mobility in industrial societies, by E. Hopper.--Social selection in the welfare state, by T. H. Marshall.--Domination and assertion in educational systems, by M. Scotford-Archer and M. Vaughan.--Sponsored and contest mobility and the school system, by R. H. Turner.--A typology for the classification of educational systems, by E. Hopper.--The management of knowledge: a critique of the use of typologies in educational sociology, by I. Davies.--Selection and knowledge management in education systems, by D. Smith.--Systems of education (...) and systems of thought, by P. Bourdieu.--On the classification and framing of educational knowledge, by B. Bernstein.--The political functions of the educational system, by H. Zeigler.--Power, ideology, and the transmission of knowledge: an exploratory essay, by D. Smith.--Theoretical advance and empirical challenge, by A. H. Halsey.--A cross-cultural outline of education, by J. Henry.--Educational systems and selected consequences of patterns of mobility and non-mobility in industrial societies: a theoretical discussion, by E. Hopper. (shrink)