abstract spatial variability of soils makes difficult analysis of soil water flow phenomena especially in a large area such as a watershed. using scaling methods is a solution in variability problems. the objective of this study was to investigate the effect of the non-linear variability on performance of the scaling methods of richards’ equation for modeling infiltration in a watershed. the me...

the current paper proposes a technique for the numerical solution of linear control systems.the method is based on galerkin method, which uses the interpolating scaling functions. fora highly accurate connection between functions and their derivatives, an operational matrix forthe derivatives is established to reduce the problem to a set of algebraic equations. several testproblems are given, a...

This paper surveys alternative approaches to the emergence and evolution of institutions. The challenge is to develop frameworks capable of capturing both stability and change. We follow a “descaling” approach to show how founding assumptions about economics—namely, alternative assumptions about individual rationality and the role of social efficiency— influence our understanding of the drivers...

Oxide scale formation during short-term annealing and electrolytic pickling behavior of ferritic EN 1.4622 austenitic 1.4828 stainless steels are investigated. The is performed at temperatures between 1000 1100 °C for 1200 steel grade under humid atmospheres in simulated industrial process. Neutral pickling, also referred to as neutral electrochemical or the Ruthner Neolyte Process, Na2SO4 elec...

background: the aim was to assess the reliability and the validity of the translated version of the stroke specific quality of life (ss-qol) questionnaire in iranian post-stroke patients. methods: this project was performed at the shiraz university of medical sciences, shiraz, iran, between 12  april  2010  and  24  february 2011.  the  english version of the ss-qol was translated into persian ...

Strong acids used in industrial applications as cleaning, descaling, among others, can severely damage metallic structures, requiring corrosion inhibitors to diminish or avoid these issues. Since many conventional compounds for this purpose may result environmental and human health issues, eco-friendly such Schiff bases have been recently investigated. The synthesis of three novel (SBs) was con...