Simulation of phenomena like climate often deals with large datasets. A process to extract the most salient features is needed to assist in the understanding of the dataset. The Morse-Smale (MS) complex is a topological structure defined on scalar functions which extracts critical points of the function and the links between them. Furthermore, it encodes a hierarchy between critical points, and...

This paper studies the buckling of standing columns under self-weight and tip load. An emphasis is placed on linearly tapered with regular polygons cross-section whose volume constant. Five end conditions for are considered. The differential equation governing shapes column derived based equilibrium equations buckled elements. numerically integrated using direct integration method, eigenvalue o...

Abstract. Aluminum Lithium alloys are recuperating substantial interest from automotive and aerospace industries owing to their extraordinary specific strength as compared conventional aluminum (2xxx, 6xxx, 7xxx) alloys. The goal of the present investigation is study AA 8090 joints produced with unique solid-state welding technique friction stir (FSW). Tool pin profile induces remarkable influe...

In this work, we develop a simulation method based on supermode theory and transfer matrix formalism, and then apply it to the analysis and design of taper couplers for vertically integrated As2S3 and Ti: LiNbO3 hybrid waveguides. Test structures based on taper couplers are fabricated and characterized. The experimental results confirm the validity of the modeling method, which in turn, is used...

A numerical study is presented of the influence of plate curvature and taper on the transport of ultrasound guided wave signals for nondestructive evaluation (NDE) and structural health monitoring (SHM) applications. Model formulations for transmission at sharp transitions in plate curvature and thickness taper are summarized. Results are presented showing that transitions in plate curvature an...

THOMAS, C. E., and PARKESOL, B. R. 1991. Simple, flexible, trigonometric taper equations. Can. J. For. Res. 21: 1132-1137. There have been numerous approaches to modeling stem form in recent decades. The majority have concentrated on the simpler coniferous bole form and have become increasingly complex mathematical expressions. Use of trigonometric equations provides a s imple expression of tap...

We investigate the design of taper structures for coupling to slow-light modes of various photonic-crystal waveguides while taking into account parameter uncertainties inherent in practical fabrication. Our short-length (11 periods) robust tapers designed for ? = 1.55?m and a slow-light group velocity of c/34 have a total loss of < 20 dB even in the presence of nanometer-scale surface roughness...

Pyruvaldehyde bis(thiosemicarbazone) (PTS) was tested alone and in combination with dietary copper sulfate on 10 tumor systems. Potentiation of the cancerostatic activity of PTS by copper sulfate occurred in 8 of the tumor systems: Sarcoma 180, Taper liver tumor (solid and ascites), Carcinoma 1025, Sarcoma T241, Ridgway osteogenic sarcoma, Mecca lymphosarcoma, and Walker Rat Carcinosarcoma 256 ...

October 2003 ORAL HEALTH 75 T he ‘Apical Control Zone’ is a matrix-like region created in the apical third of the root canal space. The zone demonstrates an exaggerated taper from the clinician defined apical constriction whether this is spatially a linear or point determination. This enhanced taper in the apical control zone provides resistance form against the condensation pressures of obtura...