Ultimo round

“What goes round comes round”

Soon after the discovery of x-rays by Roentgen, radioactivity by Becquerel, and radium by the Curies, it was concluded that x-rays could not only be used for diagnostic purposes but also for therapy [1,2]. In the early years of radiation therapy, physicians had little understanding or knowledge of the physical nature and biological effects of radiation, the delivered doses were not certain, the...

Convex-Round and Concave-Round Graphs

We introduce two new classes of graphs which we call convex-round, respectively concave-round graphs. Convex-round (concave-round) graphs are those graphs whose vertices can be circularly enumerated so that the (closed) neighborhood of each vertex forms an interval in the enumeration. Hence the two classes transform into each other by taking complements. We show that both classes of graphs have...

Cryptanalysis of some first round CAESAR candidates

ΑΕS _ CMCCv₁, ΑVΑLΑNCHEv₁, CLΟCv₁, and SILCv₁ are four candidates of the first round of CAESAR. CLΟCv₁ is presented in FSE 2014 and SILCv₁ is designed upon it with the aim of optimizing the hardware implementation cost. In this paper, structural weaknesses of these candidates are studied. We present distinguishing attacks against ΑES  _ CMCCv₁ with the complexity of two queries and the success ...

Round table.

Round Three

NUMEROUS COMPOSERS HAVE EXPLORED THE MODES OF the acoustic scale (or ascending melodic minor), including Adams, BartOk, Debussy, de Falla, Faure, Glass, Janacek, Liszt, Prokofiev, Ravel, Reich, Rzewski, Scriabin, Stravinsky, Szymanowski, Shostakovich, and virtually every contemporary jazz musician. The scale is clearly one of the central collections of twentieth-century tonality—and possibly ev...