A method is described which can be used to design two-dimensional nonrecursive linear-phase filters. The approach is based on formulating the mean-square error between the amplitude responses of the practical and ideal digital filters as a quadratic function. The coefficients of the filters are obtained by solving a set of linear equations. This method leads to a lower mean-square error and is ...

We use formal language theory to study syntactic behaviour of sets random walks on graphs. The set of walks, viewed as sets of words, is a recognizable language. As a consequence, a set of random walks can be formally described by a rational fraction or equivalently by an automaton. Applying these techniques, we compute in a uniied way various statistical parameters related to random walks, suc...

— In this paper we present a class ofalgorithms for the réduction ofbinary trees. Each algorithm Dk uses an input-restricted deque of length k and an auxiliary store. Dk is a possible generalization of the customary method for the réduction of a tree by means of a stack. We shall show that the number of binary trees with n leaves which can be reduced by algorithm Dk with at most i auxiliary cel...

A major goal in natural resource management has long been balancing the multiple uses of forest lands. Timber harvesting remains an important component of natural resource utilization, but must be approached in such a way that recreational use, ecosystem dynamics, species survivability, and other considerations are not sacrificed. One way in which production impacts are mitigated in forest mana...

Les commentaires aux dialogues de Platon ecrits par Proclus ne sont pas d’un usage aise. Malgre d’excellentes editions et traductions en francais comme anglais, souvent pourvues d’abondantes notes commentaires, il n’est toujours facile suivre le propos du Diadoque, tant texte platonicien lui sert d’occasion au developpement des considerations les plus diverses parfois inattendues. Celui consacr...

this paper addresses the problem of design of variable length codes (VLC) that would allow to exploit higher-order source statistics while still being resilient to transmission errors. The codes introduced extend and generalize the family of codes called multiplexed codes, referred to as stationary multiplexed codes. The design principle consists in creating xed length codes (FLCs) for high pri...

Fluent reading comprehension was explored in a series of experiments involving sentences presented in normal and inverted typography. Sentences read in a test phase had been read earlier in exactly the same form, or in versions that were created by (a) altering the word order within sentences to create randomly ordered word strings or (b) exchanging causally related clauses to form new meaningf...