This paper presents simple and efficient deformation methods based on a new class of interpolating N-adic subdivision algorithms. Our N-adic scheme is a natural extension of a standard dyadic scheme – each face of the mesh is more generally divided into sub-faces – and geometric properties are similar. This framework enables us to locally deform the surface using different tools by either modif...

in this paper we consider several generalizations of the skew t-normal distribution, and some of their properties. also, we represent several theorems for constructing each generalized skew t-normal distribution. next, we illustrate the application of the proposed distribution studying the ratio of two heavy metals, nickel and vanadium, associated with crude oil in shadgan wetland in the south-...

This article presents a new continuous-time model for long-term scheduling of a gas engine power plant with parallel units. Gas engines are shutdown according to a regular maintenance plan that limits the number of hours spent online. To minimize salary expenditure with skilled labor, a single maintenance team (shared by the gas engines) is considered which is unavailable during certain periods...

Normal-mode coupling is a technique applied to probe the solar interior using surface observations of oscillations. The technique, which straightforward implement, makes more use seismic information in wavefield than other comparable local imaging techniques and therefore has potential significantly improve current capabilities. Here, we examine supergranulation power spectra mode-coupling anal...

in this paper the problem of minimizing the total transmitting power subject to a fixedtotal bit rate in ofdm systems is considered. upper bounds on transmitting power and bit rate ofeach subcarrier can also be taken into account. in practice, the number of bits of each subcarriershould be integer and nonnegative. in this paper an analytical optimal solution is derived for thecase of assuming t...

in the present study, five log-normal models, normal model (n), and two four- parameter models namely gompertz (g) and fredlund (fr) were tested on 71 psd data from 10 soil textural classes. the jaky (j) and fr models had the smallest and largest r2 values for all of the soils, respectively. the results of comparing the n and simple log-normal (sl) models showed that the accuracy of the n model...

Background In patients with abnormal uterine bleeding, transvaginal ultrasound (TVS) is the first-line diagnostic approach to exclude endometrial pathology. If a thickened endometrium suggests endometrial pathology, sonohysterography, office hysteroscopy or dilatation and curettage are the second-line tests preferred, depending on availability and on the suspected pathology, to exclude malignan...