polycyclic aromatic hydrocarbons (pahs) are a class of compounds consisting of more than twobenzene rings fused in a linear, angular, or clustered arrangement and do not contain hetero atomsor carry subsistent. pahs originate from various sources. they are primarily formed byincomplete combustion of carbon-containing fuels such as wood, coal, diesel, fat, or tobacco. thepresent study reports an...

A recently reported procedure for the design of M-channe1 perfect-reconstruction quadrature mirror filter banks uses the concept of “lossless alias-component matrices.” The synthesis of such QMF banks centers around the generation of a lossless M X M FIR transfer matrix E ( z ) . Recent results for such generation have been somewhat ad hoc, Le., not sufficiently general. In this paper, a genera...

This paper presents a simple and novel structure representation supporting the assembly and disassembly planning of electromechanical products. The proposed Relationship Matrix derived from a directed graph represents both the information of the component connectivity and the layout precedence of functional elements. The feasible assembly and disassembly sequences and the minimum service steps ...

in this study, the effective parameters on the inelastic response of asymmetric buildings is evaluated for an ensemble of real iranian earthquake records by considering soil-structure interaction. then, the design eccentricity obtained from the inelastic dynamic soil-structure analysis is compared with the design eccentricity of seisimic codes of iran, atc-3, new zeland, canada, mexico, austral...

This paper addresses the issue of crossorganisational process integration using the Design Structure Matrix (DSM) approach from engineering design. This approach includes a set of generic techniques for minimising iterations within processes, thus reducing the impact of rework on processing times both within single processes and across interconnected processes. The paper focuses on the latter: ...

The volume of grillages with stress constraints is minimized. An optimal beams system or plate with reinforced ribs is obtained to present the optimal structure. A grillage-like continuum material model is adapted. Structure is analyzed by finite element method with triangle plate elements. The geometric matrix of triangle plate element in explicit formulation about area coordinates is presente...