Credit where it counts: the CRA’s role in revitalizing low- and moderate-income communities

Community development ; Community Reinvestment Act of 1977

Concluding remarks : entrepreneurship in low and moderate income communities

Community development

∗-Autonomous categories, revisited

AbstractThis paper shows how the systematic use of the “Chu construction” can both strengthen and simplify the rather complicated constructions used in the original papers and lecture notes on ∗-autonomous categories. In effect, representation data are substituted for topological and, although this loses topological information, it retains just the right amount

Mythe et réalité du soft power de la Chine

Au cours des dernières années, la Chine a fait des efforts notables pour promouvoir son soft power. Ces efforts ont grandement attiré l’attention de l’Occident, et en particulier des États-Unis où analystes et décideurs politiques ont exprimé leur préoccupation au sujet de la montée de la Chine. Or, plusieurs confondent curieusement les formes de hard power et de soft power. Cet article explore la compréhension chinoise du soft power et quelques raisons possibles de la mauvaise interprétation faite par les analystes occidentaux. L’auteur conclut que la façon dont la communauté internationale conçoit la montée de la Chine et y répond pourrait devenir une source de la puissance et de l’influence chinoises, conduisant à une sorte de prophétie autoréalisatrice.In recent years China has made dramatic efforts to promote its soft power. These efforts have attracted much attention in the West, especially in the United States, where analysts and policy-makers have expressed concern that China’s rise may threaten status-quo power arrangements. However, many commentators on China curiously conflate hard and soft forms of power, thus giving the erroneous impression that China possesses far more “soft” influence than it really does. This article explores some of the reasons for this misinterpretation and concludes that the way the international community conceives of and responds to China’s rise might in itself become a source of Chinese power and influence, leading to a sort of self-fulfilling prophecy

A flow equation approach to periodically driven quantum systems

We present a theoretical method to generate a highly accurate {\em time-independent} Hamiltonian governing the finite-time behavior of a time-periodic system. The method exploits infinitesimal unitary transformation steps, from which renormalization group-like flow equations are derived to produce the effective Hamiltonian. Our tractable method has a range of validity reaching into frequency regimes that are usually inaccessible via high frequency $\omega$ expansions in the parameter $h/\omega$, where $h$ is the upper limit for the strength of local interactions. We demonstrate our approach on both interacting and non-interacting many-body Hamiltonians where it offers an improvement over the more well-known Magnus expansion and other high frequency expansions. For the interacting models, we compare our approximate results to those found via exact diagonalization. While the approximation generally performs better globally than other high frequency approximations, the improvement is especially pronounced in the regime of lower frequencies and strong external driving. This regime is of special interest because of its proximity to the resonant regime where the effect of a periodic drive is the most dramatic. Our results open a new route towards identifying novel non-equilibrium regimes and behaviors in driven quantum many-particle systems.Comment: 25 pages, 14 figure