Resumo. In this work we carried out the modelling, the discretization and the numerical simulation of a vacuum breaker. We present a mathematical model of the multi-physical problem involving mechanical, electrical and electromagnetic phenomena. The finite element method is employed in conjunction with a technique of domain decomposition to solve the mechanical problem and the electrical proble...

An analytical model for the read back signal is derived for perpendicular and longitudinal magnetic recording. The model captures the contribution of a single bit rather than the contribution of a bit transition which makes it applicable to patterned media as well as continuous media. It is based on the law of Biot–Savart and separates the contribution of the magnetic media from the head sensit...

Using the well-established wave function of 12Be(g.s.), I have estimated the cross-section ratio for the reaction 12Be(p,t) populating the ground-state and first excited 0+ state of 10Be. I find that the excited-state to groundstate ratio is small for any reasonable value of configuration mixing in 10Be. Disciplines Physical Sciences and Mathematics | Physics Comments Fortune, H. T. (2013). 0+ ...

PURPOSE Cervical cytology and human papillomavirus (HPV) DNA co-testing is recommended as a screening method for detecting cervical lesions. However, for women who are HPV-positive but cytology-negative, the appropriate management and significance of HPV-58 infection remain unknown. METHODS This study of prevalent HPV detected at baseline with a median follow-up of 3.2 years evaluated the ris...

Let Xi be non-negative, independent random variables with finite expectation, and X∗ n = max{X1, . . . , Xn}. The value EX∗ n is what can be obtained by a “prophet”. A “mortal” on the other hand, may use k ≥ 1 stopping rules t1, . . . , tk, yielding a return of E[maxi=1,...,k Xti ]. For n ≥ k the optimal return is V n k (X1, . . . , Xn) = supE[maxi=1,...,k Xti ] where the supremum is over all s...

The present study investigated how the value of the long anchor duration influences the bisection point (BP) in the temporal bisection procedure. The ratio similarity rule (Gibbon, 1981, On the form and location of the psychometric bisection function for time. Journal of Mathematical Psychology, 24(1), 58-87) hypothesizes that the location of the BP is determined by a ratio comparison between t...

In this comment we demonstrate that the example of a DC conducting wire of finite length as and example for the application of the Biot-Savart Law is flawed due to the non-conservation of electric charge for such an unphysical setting. The implications drawn in [1] on the restrictions of Ampère’s Circuital Law in integral form are unnecessary as long as only physically realizable situations obe...

In an earlier paper the authors introduced a new version of the vortex method for three-dimensional, incompressible flows and proved that it converges to arbitrarily high order accuracy, provided we assume the consistency of a discrete approximation to the Biot-Savart Law. We prove this consistency statement here, and also derive substantially sharper results for two-dimensional flows. A comple...

Creeping bentgrass ( Agrostis stolonifera ) experiences quality decline during summer in the United States transition zone and warmer regions. Various bioproducts have been used to improve creeping performance mitigate effects of stress zone. This 2-year study was carried out examine if foliar application seaweed extract (SWE; Ascophyllum nodosum )-based biostimulant Utilize ® could enhance nit...