Complex Spinors and Unified Theories

In this paper delivered by Murray Gell-Mann at the Stony Brook Supergravity Workshop in 1979, several paths to unification are discussed, from N=8 supergravity to $SU_5$, $SO_{10}$, and $E_6$. Generalizations of $SO_{10}$ to spinor representations of larger groups are introduced. A natural mechanism for generating tiny neutrino masses is proposed in the context of $SO_{10}$, and finally, focus on $SU_3$ rather than $SU_2$ or $SO_3$ family symmetries is noted.Comment: Retro-preprint of 1979 paper. Originally published in Supergravity, P. van Nieuwenhuizen and D.Z. Freedman, eds, North Holland Publishing Co, 197

Promoting teacher–learner autonomy through and beyond initial language teacher education

With the growing international market for pre-experience MA in ELT/TESOL programmes, a key curriculum design issue is how to help students develop as learners of teaching through and beyond their formal academic studies. We report here on our attempts at the University of Warwick to address this issue, and consider wider implications for research and practice in initial language teacher education. At the Centre for Applied Linguistics at the University of Warwick, we run a suite of MA programmes for English language teaching professionals from around the world. Most of these courses are for students with prior teaching experience, but our MA in English Language Studies and Methods (ELSM) programme is designed for students with less than two years’ experience and, in fact, the majority enrol straight after completing their undergraduate studies in their home countries

The Rating of a Power Type Transistor

The purpose of this paper is to describe the test performed and present the results obtained in an attempt to establish the maximum permissible direct current and pulse ratings for the type of CTP-1003 (Clevite Transistor Products) power transistors under typical operating conditions. The manufacturer\u27s specifications for the type of CTP-1003 power transistor are located in Appendix A