BACKGROUND Repeat volumetric analysis of abdominal aortic aneurysm (AAA) after endovascular AAA repair (EVAR) is time-consuming and requires advanced processing, dedicated equipment, and skilled operators. PURPOSE To clarify the validity of measuring the maximal short-axis diameter (Dmax) of AAA in follow-up non-enhanced axial CT as a means of detecting substantial endoleaks after EVAR. MAT...

This work investigates the retraction and bouncing dynamics of an impacting low-viscosity nanodroplet on superhydrophobic surfaces via molecular simulations, aiming to reveal scaling laws velocities establish relationship between them. The velocity, Vre, is found scale as Vre ∼ Dmax/τc,n, where Dmax maximum spreading diameter, τc,n = (D0/V0)We1/2Oh1/3 inertial-capillary-viscous time, We Oh are ...

Background: Use of contrast agents (CAs) during CT simulation for treatment planing system leads to changes in  electron density. In this study we aimed to investigate the effect on  calculated dose of various concentrations of CAs on treatment planing systems in different dose calculation algorithms. Materials and Methods: Contrast agent (0.769 mg/ml Iopromid) - water mixtures at con...

background: use of contrast agents (cas) during ct simulation for treatment planing system leads to changes in  electron density. in this study we aimed to investigate the effect on  calculated dose of various concentrations of cas on treatment planing systems in different dose calculation algorithms. materials and methods: contrast agent (0.769 mg/ml iopromid) - water mixtures at concentration...

In this paper we study the set cover games when the elements are selfish agents, each of which has a privately known valuation of receiving the service from the sets, i.e., being covered by some set. Each set is assumed to have a fixed cost. We develop several approximately efficient strategyproof mechanisms that decide, after soliciting the declared bids by all elements, which elements will be...

Heart rate deflection point (HRDP) can be determined through different mathematical-modeling procedures, such as bi-segmental linear regression (2SEG) or maximal distance model (Dmax). The purpose was to compare heart rate (HR) and oxygen consumption (VO2) at HRDP when using 2SEG and Dmax, and to examine their relationships with respiratory compensation point (RCP) and running performance. Nine...

Karl J. Niklas*, Jeremy J. Midgley and Richard H. Rand Department of Plant Biology, Cornell University, Ithaca, NY USA Department of Botany, University of Cape Town, Cape Town, South Africa Department of Theoretical and Applied Mechanics, Cornell University, Ithaca NY, USA *Correspondence: E-mail: [email protected] Abstract We show that explicit mathematical and biological relationships exist am...

We provide a novel method for constructing asymptotics (to arbitrary accuracy) for the number of directed graphs that realize a fixed bidegree sequence d = (a,b) ∈ ZN×2 with maximum degree dmax = O(S 1 2 −τ ) for an arbitrarily small positive number τ , where S is the number edges specified by d. Our approach is based on two key steps, graph partitioning and degree preserving switches. The form...

Two noninteger parameters are defined for MAX statistics, which are maxima of d simpler test statistics. The first parameter, dMAX, is the fractional number of tests, representing the equivalent numbers of independent tests in MAX. If the d tests are dependent, dMAX < d. The second parameter is the fractional degrees of freedom k of the chi-square distribution χk that fits the MAX null distribu...

LetD be an acyclic orientation of a graphG.An arc ofD is said to be dependent if its reversal creates a directed cycle. Let d(D) denote the number of dependent arcs inD. Define dmin(G) (dmax(G)) to be theminimum (maximum) number of d(D) over all acyclic orientationsD ofG.We determine dmin(G) for an outerplanar graph G and prove that G has an acyclic orientation with exactly k dependent arcs if ...