Asymptotics of the variances of many cost measures in random digital search trees are often notoriously messy and involved to obtain. A new approach is proposed to facilitate such an analysis for several shape parameters on random symmetric digital search trees. Our approach starts from a more careful normalization at the level of Poisson generating functions, which then provides an asymptotica...

H E occurrence of non-random segregation in triplo-IV females of T Drosophila melanogaster was reported in a preliminary note (STURTEVANT 1934) of which this is the full account. As there shown, and elaborated below, all the tested fourth chromosomes may be arranged in a series, of such a nature that each chromosome will (in a triplo-IV female) pass to the haplo-IV pole a t meiosis more often t...

The trajectory of a robot is monitored in a restricted dynamic environment using light beam sensor data. We have a Dynamic Belief Network (DBN), based on a discrete model of the domain, which provides discrete mon­ itoring analogous to conventional quantita­ tive filter techniques. Sensor observations are added to the basic D BN in the form of specific evidence. However, sensor data is often pa...

Autonomy Oriented Education (AOE) is a common focus of academia and business community. In this paper, based on the successful experience in the promotion of Autonomy Oriented Education, we present the background, concept, empowerment mechanisms, psychological support, as well as practical applications of AOE in Europe, and conclude relevant recommendations of constructing autonomy oriented net...

Interacting or functionally related protein families tend to have similar phylogenetic trees. Based on this observation, techniques have been developed to predict interaction partners. The observed degree of similarity between the phylogenetic trees of two proteins is the result of many different factors besides the actual interaction or functional relationship between them. Such factors influe...

P eople over 65 make up an ever-growing section of the community. It is estimated that these individuals account for 20% of the population in Europe and 14% in the United States of America. It has been predicted that by 2050 those aged over 80 years will represent about 25% of the elderly and 5% of the total population of the USA. In Greece, 11.5% of the general population is aged over 70 years...

tected, as it were, from another crossing over. This relation is illustrated in the diagram (fig. 7). If crossing over occurs at some point between two pairs of factors a and b indicated on the diagram, the next crossing over point of the chromosome would, if it occurred at all, lie at some distance away, rather than near by. This possibility can be tested in a case where several known points a...

This study explores the role of issuance expenses in explaining the fall in stock value for OTC stock offerings that raise cash for debt reduction purposes. It estimates that over half of the sample's −2.79% two-day fall in stock value can be accounted for by issuance expenses when using a lower bound measure of issuance expenses. This estimate contrasts with the one-fifth estimate suggested by...

The nature of the relationship between crossing over and failed segregation in human oocytes is of obvious interest. A recent paper by Cheng and colleagues provides important insights into the distribution of crossover events (as marked by MLH1 foci) in human oocytes and raises complex questions regarding discrepancies between direct cytological assessment of exchange and measurement of crossin...

Selection was practiced for reducing crossing over between the third chromosome genes Sb and H(2) of Drosophila melanogaster; the method employed was to select the repulsion double heterozygotes Sb+/+H(2) every generation. Two replicate selection lines were maintained. After 24 generations of selection, Line 1 showed no significant difference from the control, although the regression of recombi...