In this paper we consider the extension of the n-queens problem to the Möbius strip; that is, the problem of placing a maximum number of nonattacking queens on the m×n chessboard for which the left and right edges are twisted connected. We prove the existence of solutions for the m× n Möbius board for classes of m and n with density 25/48 in the set of all m × n Möbius boards, and show the impo...

The Maximum Density Still Life problem fills a finite Game of Life board with a stable pattern of cells that has as many live cells as possible. Although simple to state, this problem is computationally challenging for any but the smallest sizes of board. Especially difficult is to prove that the maximum number of live cells has been found. Various approaches have been employed. The most succes...

in the name of God, most gracious, most merciful Physiology and Pharmacology Indexing: Index Copernicus (IC), Scientific Information Database (SID) Physiology and Pharmacology is the official publication of the Iranian Society of Physiology and Pharmacology. The journal publishes full-length original articles in physiology, pharmacology and related subjects. Editorial office: ...

We present an analysis comparing multi-level signaling to standard NRZ signaling for module-to-module on-board electrical interconnects. To study on-board electrical performance, duobinary and PAM4 I/O models were created and compared to NRZ signaling in behavioral link-level simulations. A great variety of high-density, high-speed on-board module-to-module electrical links were analyzed, and s...