In this paper, the mechanical behavior of three-phase inhomogeneous materials is modeled using the meso-scale model with lattice beams for static and dynamic analyses. The Timoshenko beam theory is applied instead of the classical Euler-Bernoulli beam theory and the mechanical properties of lattice beam connection are derived based on the continuum medium using the non-local continuum theory. T...

in this paper, a novel hybrid model based on neural network and game theory is proposed to support the analyzers in oil market. in this model, first the neural network is utilized to learn the oil prices associated with opec production level and usa imports level. then the learned neural network is applied by a game model. finally the nash equilibrium points of the game present the optimum deci...

the electronic structure, energy band structure and electronic density of 2 sno ceramic in cubicphase have been investigated using first principle full potential-linearized augmented plane wave (fp-lapw)method within density functional theory (dft). local density approximation (lda) and the generalizedgradient approximation (gga), which are based on exchange- correlation energy optimization wer...

Software engineering theory and practice is still to a large extent based more on faith than on science. Only by contributing to the scientific and empirically grounded body of knowledge within a specific area of application, theory and practice can develop. Experimentation is an important scientific approach to collect empirical data and to test theories as well as to bring light to new phenom...

The science multi-level practice teaching system not only can improve the students’ basic practical skills, but also improve students' practical ability and ability to operate, and can identify problems through practice, analyze problems, to solve the problem. Also it can promote the students integrated use of the theory knowledge, and further propose new ideas, new theories, and then design a ...

aspects ... to explain how it is caused and how it is regulated." Professor Young has set himself a tremendous task. In order to accomplish it, he has, apart from breaking new ground, covered a very wide range both in theoretical and experimental psychology, particularly of the past ten yearsHe has endeavoured with no little skill to justify his thesis that in order scientifically to answer the...

a r t i c l e i n f o a b s t r a c t General theories of software engineering must balance between providing full understanding of a single case and providing partial understanding of many cases. In this paper we argue that for theories to be useful in practice, they should give sufficient understanding of a sufficiently large class of cases, without having to be universal or complete. We prov...

This paper aims to study Vygotsky’s (1987) sociocultural theory of learning with respect to how it relates to technology-based second language learning and teaching. The researchers selected their participants from advanced students from Payame Noor University. We divided the participants into two groups- an experimental group and a control group. After teaching the course an experimental group...