Galvanic isolations are essential in many electrical patient-monitoring devices and industrial applications. In this paper, a low-profile wideband three-port isolation amplifier using coreless printed-circuit-board (PCB) transformers for isolation is studied. The PCB thickness used in the isolation amplifier is 0.4 mm. The diameters of the two coreless PCB transformers are 9.75 and 5.856 mm, re...

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The type of reproductive isolation prevalent in the initial stages of species divergence can affect the nature and rate of emergence of additional reproductive barriers that subsequently strengthen isolation between species. Different groups of Mediterranean deceptive orchids are characterized by different levels of pollinator specificity. Whereas food-deceptive orchid species show weak pollina...

Active fault diagnosis (AFD) of parametric faults is considered in connection with closed loop feedback systems. AFD involves auxiliary signals applied on the closed loop system. A fault signature matrix is introduced in connection with AFD and it is shown that if a limited number of faults can occur in the system, a fault separation in the fault signature matrix can be obtained. Then the singl...

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...