The importance of energy preservation in wireless sensor networks is long established, and a number of maximum lifetime routing schemes exist in the literature. Many of the existing online routing schemes are based on the use of some edge-weight functions, but those schemes exhibit diverse performances in terms of the obtained lifetime results. The major contribution of the present work is to c...

Abstract. Matrix accumulations, buckling and tearing of fibers metal sheets are common defects in the deep drawing fiber laminates. The previously developed in-situ hybridization process is a single-step method for manufacturing three-dimensional laminates (FML). During FML, low-viscosity thermoplastic matrix injected into dry glass fabric layer using resin transfer molding process. concurrent ...

Abstract In this paper, a variable-fidelity constrained lower confidence bound (VF-CLCB) criterion is presented for computationally expensive optimization problems (COPs) with two levels of fidelity. VF-CLCB, the hierarchical Kriging model adopted to objective and inequality constraints. Two infill sampling functions are developed based on constraints, respectively, an adaptive selection strate...

Stiffened plates are employed in various engineering structures including aerospace, civil, naval, etc. These may be subjected to harmonic loads. Therefore, it is essential understand the response of a cracked stiffened structure. This study presents effects crack location on free vibration and plates. For this purpose, horizontal vertical cracks modelled throughout fixed from two-side The anal...

Initial results of an investigation towards finding an efficient non-cylindrical fuselage configuration for a conceptual blended-wing-body flight vehicle were presented. A simplified 2-D beam column analysis and optimization was performed first. Then a set of detailed finite element models of deep sandwich panel and ribbed shell construction concepts were analyzed and optimized. Generally these...

BACKGROUND Human lymphoedema distichiasis syndrome (LDS) results from germline mutations in transcription factor FOXC2. In a mouse model, lack of lymphatic and venous valves is observed plus abnormal smooth muscle cell recruitment to initial lymphatics. We investigated the mechanism of lymphoedema in humans with FOXC2 mutations, specifically the effect of gravitational forces on dermal lymphati...

This study used Social Judgment Theory (SJT) (Sherif & Hovland, 1961; Sherif, Sherif, & Nebergall, 1965) as a lens to understand how dominant societal standards for social support manifest in raters’ judgments of postings on a pop-culture website. The pop-culture website, FMyLife.com (FML) was analyzed to see if there were major themes within the community’s norms consistent with those of socie...

Currently, lattice composite structures have many applications in aerospace industries. The present research analyzed the effect of an external skin consisting of a lattice’s cylindrical shell on the buckling strength of composite materials, both numerically and experimentally. Two classes of specimens, with and without external skins, were fabricated using the filament winding process. To find...

We study an old mathematical model, developed before the computer era, for analyzing the strength of a stiffened shell roof. The specific problem considered is a textbook example presented in K. Girkmann: Flächentragwerke, 3rd edition, 1954. Here the roof consists of a spherical dome and a stiffening ring of rectangular cross section attached to the edge of the dome. The problem is to compute t...