Traditional approaches for the seismic retrofit of existing buildings consider the following assumptions: (a) the building is not damaged after a minor earthquake, (b) the building is reparable after a moderate earthquake, and (c) the building will not have collapsed after a severe earthquake. In recent times, following several destructive earthquakes which have occurred in the past decades, th...

Choosing a weak isolation level such as Read Committed is understood as a trade-off, where less isolation means that higher performance is gained but there is an increased possibility that data integrity will be lost. Previously, one side of this trade-off has been carefully studied quantitatively – there are well-known metrics for performance such as transactions per minute, standardized bench...

The Association between Use of Virtual Social Networks and Social Isolation among High School Girls in Shahrekord   K. Karimian [1] M. Parsamehr, Ph.D. [2] S.A.R. Afshani, Ph.D. [3]   This study [4] sought to examine the association between use of virtual social networks and social isolation among high school girls in Shahrekord. The research method was survey. The statistical population ...

Many database replication protocols have been designed for guaranteeing a serialisable isolation level, since it is appropriate for almost all applications. However, it also requires a tight coordination among replicas and might generate high abortion rates with some workloads. So, other isolation levels have also been considered, such as snapshot isolation and cursor stability, but none of the...

The crucial step in the separation of two populations of a sexually reproducing species into two new species — speciation — is the acquisition of reproductive isolation between them. Such isolation ensures that they can evolve independently of each other, and so end up with radically different genotypes and phenotypes. This causes the biological world to be divided up into the discrete taxonomi...

more necessary and more and more used.In earlier days and among backward and primitive peoples much opposition is felt, and many of us remember in India about 15 years ago the plague riots and the burning of plague camps and hospitals by the very people for whose good they were intended. In India the people and the educated classes are only slowly emerging from the dark ages as regards sanitati...

One approach to understand the importance of reproductive barriers to the speciation process is to study the breakdown of barriers between formerly distinct species. One reproductive barrier, sexual isolation, reduces gene flow between species through differences in mate preferences and mating signals and is likely important for species formation and maintenance. We measure sexual isolation in ...

introduction: abusing drugs such as morphine continues to be a serious medical and social problem. defining a habit that increases the devastating effect such as compulsive use and craving is necessary. methods: this experiment was designed in four groups 1) group-housed (gh) 2) isolation 3) group-housed morphine-treated (ghmt) (4) isolated-housed morphine-treated (ihmt). rats were received mor...

background : bovine ephemeral fever (befv) is an arthropod-borne disease of cattle and water buffaloes. befv occurs seasonally in tropical, subtropical and temperate regions of africa, asia and australia. it has been known for the past decades in iran based on clinical signs but lack of an accurate diagnosis has made the real feature of disease obscured. this is the first scientific report on i...