In Russia and the adjacent territories, the genus Hephathus includes three species, H. nanus (Herrich-Schäffer, 1835), H. freyi (Fieber, 1868) = H. tshakaranus Dlabola, 1957, syn. n., and H. achilleae Mityaev, 1967. They are indistinguishable in genitalia shape, but differ in male calling signal structure and black pattern of face. Photos of habitus and face, drawings of genitalia and male 2(nd...

When using volume-based approach to reconstruct 3D model by engineering drawings, some lost projection lines of a primitive feature parts will result in incorrect recognitions of a complex part, so preprocess of engineering drawings will be necessary. The approach presented in this paper proposes an iterative procedure of pattern recognition and projection mending. By the process, feature parts...

Solving deterministic equivalent formulations of two-stage stochastic linear programs using interior point methods may be computationally diflicult due to the need to factorize quite dense search direction matrices (e.g., AAT). Several methods for improving the algorithmic efficiency of interior point algorithms by reducing the density of these matrices have been proposed in the literature. Ref...

BACKGROUND AND AIMS The watermelon, Citrullus lanatus (Cucurbitaceae), is an important fruit vegetable in the warmer regions of the world. Watermelons were illustrated in Mediterranean Antiquity, but not as frequently as some other cucurbits. Little is known concerning the watermelons of Mediterranean Europe during medieval times. With the objective of obtaining an improved understanding of wat...

We address recently proposed chromatic versions of the classic Art Gallery Problem. Assume a simple polygon P is guarded by a finite set of point guards and each guard is assigned one of t colors. Such a chromatic guarding is said to be conflict-free if each point p ∈ P sees at least one guard with a unique color among all guards visible from p. The goal is to establish bounds on the function χ...

The chromatic art gallery problem asks for the minimum number of “colors” t so that a collection of point guards, each assigned one of the t colors, can see the entire polygon subject to some conditions on the colors visible to each point. In this paper, we explore this problem for orthogonal polygons using orthogonal visibility—two points p and q are mutually visible if the smallest axisaligne...

BACKGROUNDS Genus Trichostrongylus (Nematoda: Trichostrongylidae) is one of the most important zoonotic nematodes with wide geographic distribution in the world. The purpose of the present study was to describe morphological and morphometrical characteristics of male Trichostrongylus species, currently prevalent in domestic ruminants of Khuzestan Province, southwest Iran. METHODS Gastro-intes...