M.I.T. political-military gaming experience

"February 1965.""1552"--handwritten on cove

The political-military exercise : a progress report

Cover title"August 16, 1963.""#1393"--handwritten on coverIncludes bibliographical referencesProgress report; August 16, 196

Research program on problems of international communication and security

Cover title"1693"--handwritten on coverIncludes bibliographical reference

Software for the frontiers of quantum chemistry:An overview of developments in the Q-Chem 5 package

This article summarizes technical advances contained in the fifth major release of the Q-Chem quantum chemistry program package, covering developments since 2015. A comprehensive library of exchange–correlation functionals, along with a suite of correlated many-body methods, continues to be a hallmark of the Q-Chem software. The many-body methods include novel variants of both coupled-cluster and configuration-interaction approaches along with methods based on the algebraic diagrammatic construction and variational reduced density-matrix methods. Methods highlighted in Q-Chem 5 include a suite of tools for modeling core-level spectroscopy, methods for describing metastable resonances, methods for computing vibronic spectra, the nuclear–electronic orbital method, and several different energy decomposition analysis techniques. High-performance capabilities including multithreaded parallelism and support for calculations on graphics processing units are described. Q-Chem boasts a community of well over 100 active academic developers, and the continuing evolution of the software is supported by an “open teamware” model and an increasingly modular design

Stratagem : deception and surprise in war

"1775"--handwritten on coverCorrigenda sheet inserted, dated 17 April 1969Includes bibliographical reference