Object{oriented concepts and constructions are explained in an informal and language{independent way. Various algebraic approaches for dealing with objects and their speciication are examined, ADT{based ones as well as pro-cess{based ones. The conclusion is that the process view of objects seems to be more appropriate than the data type view.

One of the main challenges human space exploration is development artificial ecosystems, which can be used as life support systems (LSSs) to enable long-duration missions. In an open LSS, no food generation or waste treatment provided in space, and supplies from Earth are necessary. According Figure 1, considering approximate metabolic consumables hygiene water well number crewmembers [1], a hu...

In a distributed clustering algorithm introduced by Coffman, Courtois, Gilbert and Piret [1], each vertex of Zd receives an initial amount of a resource, and, at each iteration, transfers all of its resource to the neighboring vertex which currently holds the maximum amount of resource. In [4] it was shown that, if the distribution of the initial quantities of resource is invariant under lattic...

The penta-ethyl ester prodrug of the chelating agent diethylene triamine pentaacetic acid (DTPA), referred to as C2E5, effectively accelerated clearance of americium after transdermal delivery. Carboxylesterases (CESs) play important roles in facilitating C2E5 hydrolysis. However, whether CESs in human skin hydrolyze C2E5 remains unknown. We evaluated the gene and protein expression of CESs in ...

The correspondence between syntactic functions and thematic roles is carried out following the predicate analysis presented in Levin & Rappaport-Hovav [9] and Rappaport-Hovav & Levin [12]. We consider that their proposal is appropriated for our work for a number of reasons. First, because in this model converge lexical semantic, event and argument information and diathesis alternations. And sec...

Abstract Chung, Diaconis, and Graham considered random processes of the form Xn+1 = 2Xn + bn (mod p) where X0 = 0, p is odd, and bn for n = 0, 1, 2, . . . are i.i.d. random variables on {−1, 0, 1}. If Pr(bn = −1) = Pr(bn = 1) = β and Pr(bn = 0) = 1− 2β, they asked which value of β makes Xn get close to uniformly distributed on the integers mod p the slowest. In this paper, we extend the results...

An application shell is presented for symptom driven diagnostic applications that is designed to support multiple diagnostic paradigms and is used for several specific diagnostic applications.

The scale-invariant spacings lemma due to Arratia, Barbour and Tavaré establishes the distributional identity of a self-similar Poisson process and the set of spacings between the points of this process. In this note we connect this result with properties of a certain set of extreme points of the unit Poisson process in the positive quadrant.

Ab stract It has been sug gested since the be gin ning of pre his toric re search in the Lev ant, that the Natufians used stone mor tars for the pro cess ing of ce re als and/or other veg e tal re sources, though di rect ev i dence is still lack ing. A re cent de tailed study of more than 100 bed rock mor tars and cupmarks in di cates that, a) they are found in many Late Natufian sites, re gard...