This paper also appears in the Proceedings of the Tenth International Conference on Artificial Intelligence. Milan. Italy. August 1987. In recent years knowledge-based techniques like explanation-based learning. qualitative reasoning and case-based reasoning have been gaining considerable popularity in Al. Such knowledge-based methods face two difficult problems: (1) the performance of the syst...

although some piecemeal efforts have been made to investigate the validity and use of the iranian phd exam, no systematic project has been specifically carried out in this regard. the current study, hence, tried to attend to this void. as such, to ensure a balanced focus on test interpretation and test consequence, and to track evidence derived from a mixed–method study on the validity of irani...

In this research, the bending analysis of rectangular nanoplates subjected to mechanical loading is investigated. For this purpose, the strain gradient elasticity theory with one gradient parameter is presented to study the nanoplates. From the best knowledge of authors, it is the first time that the exponential shear deformation formulation based on strain gradient elasticity theory is carried...

A new correlation function for the calculation of viscosity for five typical supercritical gases is presented using the rainwater-Friend and modified Enskog theory. It is shown that by using accurate value for the thermal pressure and co-volume in the modified Enskog theory, this correlation function is suitable for calculation of the viscosity of supercritical gases, without any density an...

the auther first defines that a theory is an interrrelated set of definitions and propositions, put forth to anticipate and explain the phenomena by dint of recognizing the relation between factors.the developmental theory, ascientific theory based on genetic methods aims to render a new organizattioin of the data and the relevant knowledge.upon this, piaget proviedes a co-variational relation ...

aims: adolescence is one the most precarious periods of life, concerning the drug abuse. the social cost of the drug abuse and injury among adolescents is extraordinary and requires intervention. the theory of planned behavior (tpb) is perhaps the most influential theory for prediction of social and health behaviors including drug abuse. this study aimed at designing and implementing a curricul...

based on the carnahan and starling hard sphere equation of compressibility, an equation of state has been derived. conditions that must be met by all equations of state are applied in order to obtain attractive term or non - ideal compressibility term of the equation. second virial coefficient and acentric factor arc used in the derivation of the equation of state. in this equation, compressibi...