Ring-On-Ring (ROR) tests have been widely applied to evaluate the biaxial flexural strength of brittle materials. Properly designed geometry specimens and loading configurations are essential for accurate test results. In this paper, stress distribution round glass plates subjected between concentric rings was investigated via finite element analysis. particular, effects ratio ring diameter, ov...

The title mol-ecule, C(16)H(19)NO(2), consists of an indane moiety, which is connected through an N atom to an acetamide group and a cyclo-pentane ring. The N atom adopts planar triangular geometry. Inter-molecular inter-actions, such as π-π stacking or hydrogen bonding, were not observed.

An involutory upper triangular Pascal matrix Un is investigated. Eigenvectors of Un and of UT n are considered. A characterization of Un is obtained, and it is shown how the results can be extended to matrices over a commutative ring with unity. © 2004 Elsevier Inc. All rights reserved.

An optical fiber ring resonatory sensor system has been demonstrated by applying a triangular phase modulation signal to a fiber loop. The dynamic range for detection of optical phase change is 2pi. The sensor is linear within this range. The minimum detectable optical phase change is 1.5 x10(-4) rad/Hz((1/2)).

Let S be finite nonempty set of inequivlent valuations on Fp(t), and OS be the ring of S-integers. If Bn is the solvable, linear algebraic group of upper triangular matrices with determinant 1, then the solvable S-arithmetic group Bn(OS) has a finite index subgroup with infinite dimensional cohomology group in dimension |S|.

in this paper, some elementary operations on triangular fuzzynumbers (tfns) are defined. we also define some operations on triangularfuzzy matrices (tfms) such as trace and triangular fuzzy determinant(tfd). using elementary operations, some important properties of tfms arepresented. the concept of adjoints on tfm is discussed and some of theirproperties are. some special types of tfms (e.g. pu...