structural  problems  arc  the  main  trade-barriers  which  bring  about  inefficiencies in  internal trade  in  iran. the  structure of the institutions in the  successful countries are studied (descriptive, explanatory and multiple case studies) which shows success depends  on designs  aimed  at efficiency.  flexibility and using small  or  medium  edi technology. regarding the circumstances...

Paul Robert Thompson Doctor of Philosophy The University of Sydney March, 2009 A Novel Augmented Graph Approach for Estimation in Localisation and Mapping This thesis proposes the use of the augmented system form a generalisation of the information form representing both observations and states. In conjunction with this, this thesis proposes a novel graph representation for the estimation probl...

it is well known that the matrix exponential function has practical applications in engineering and applied sciences. in this paper, we present some new explicit identities to the exponential functions of a special class of matrices that are known as central-symmetric $x$-form. for instance, $e^{mathbf{a}t}$, $t^{mathbf{a}}$ and $a^{mathbf{a}t}$ will be evaluated by the new formulas in this par...

The focus of this paper is improving individual Private Finance Initiative (PFI) projects to deliver better value for the benefit of the partners in PFI. Signing long term contracts of 20 to 30 years with the private sector typically enlarges demand risks in PFI. Subsequently, this report seeks a way to deliver more valuable PFI projects by the effective management of demand risks. Incorporatio...

The mine hoisting headframe is a typical towering truss structure, and its damage complicated after long-term service, which affects the safety of structure. To achieve rapid identification corrosion on steel headframe, degradation law under different was analyzed via parametric modeling method verified field measurement. results show that influence range element localized, 50% rate bottom colu...

We consider monolithic algebraic multigrid (AMG) algorithms for the solution of block linear systems arising from multiphysics simulations. While idea is applied directly to entire system, AMG operators are constructed by leveraging matrix structure. In particular, each corresponds a set physical unknowns and equations. Multigrid components first applying existing procedures sub-blocks. The res...

Integrins are alphabeta heterodimeric adhesion receptors that relay signals bidirectionally across the plasma membrane between the extracellular matrix and cell-surface ligands, and cytoskeletal and signalling effectors. The physical and chemical signals that are controlled by integrins are essential for intercellular communication and underpin all aspects of metazoan existence. To mediate such...