the advantages and special characteristics of service oriented architecture and expansion of employing such architecture have brought security topics which are different in some cases from the security principles of traditional information systems. in this article our aim is the examination of various indices of security and the presentation of strategies for security in information systems by ...

in ziegler-natta olefin polymerization, the pore architecture of catalysts plays a crucial role in catalyticperformances and polymer properties. while the type of preparation routes (such as chemical reaction andsolution precipitation) greatly affects the catalyst pore architecture as a result of different solidification mechanisms,the modification of the pore architecture within a given route ...

mohammad-karim pirnia, one of the most prominent scholars of the history of iranian architecture, has recorded two major achievements: the principles of iranian architecture and the stylistics of iranian architecture. in this article we will discuss his suggested principles for iranian architecture. for this purpose, we will first show how his five principles have evolved and completed through ...

The purpose of this research is to investigate the ability to redefine the components and indicators of popular architecture facades in contemporary architecture. The research method is content analysis and descriptive-analytic and survey with semiotic and Delphi technique. At first, popular architecture is analyzed using the descriptive and analytical method. Next, 14 components of the popular...

Abstract Climate has an important effect on operation of the traditional building architecture and its energy consumption in desert area of Iran. Absence of water and unpleasant climate of these regions compelled people to build their houses with some strategies based on effective energy expenditure. Therefore, builders try to use natural climatic strategies for confronting hard situations. Nar...

Today, one of the important topics, which are mentioned in architecture, is the relationship between architectural works with each other and way of effect of such works on them. On the other hand, under current conditions and despite existing trends which look for their own architecture, it is crucial important to interpret how contemporary architectural works are affected by previous architect...

the effect of magnetic field on the liquid-liquid equilibrium of two ternary systems (water + acetic acid + butyl acetate and water + acetic acid + dimethyl succinate) at 298.15 k under atmospheric pressure was investigated. the results obtained show that the strength of the magnetic field (0.02 t) affects the solubility of acetic acid in the used organic solvents. distribution coefficients and...

the dispersive liquid–liquid microextraction (dllme) method for determination of pb +2 and cd +2 ions in the environmental water samples was combined with inductively coupled plasma-atomic emission spectrometry (icp-aes). ammonium pyrrolidine dithiocarbamate (apdc), chloroform and ethanol were used as chelating agent, extraction solvent and disperser solvent, respectively. some effective parame...