abstract management of water resources in iran is faced with growing demand for water resources, a considerable increase in the costs of supplying additional water and uncontrolled exploitation of underground waters. economists suggest water pricing to improve water use efficiency; however, government tends to reject that advice due to political risk, economic and cultural concerns. we used a p...

one of the most important issues about production structure and measurement of factors utilization in industry is the study of substitutability among the production factors. while, energy, for its particular features like finite and the direct relationship between energy usage and air pollution; and specifically abundance of energy resources and allocation of subsidies to different energy carri...

Congruence among the Intended, Implemented and Attained “Thinking and Life Style” Curricula in the Eighth Grade M. A. Jamalifar Sh. Hashemi Moghadam, Ph.D. Z. Abedi Karajiban, Ph.D. A.R. Faghihi, Ph.D. The present study was carried out to examine the congruence among the intended, implemented and attained “thinking and life style” curricula in th...

A general notion of a congruence system is introduced for π-institutions. Congruence systems in this sense are collections of equivalence relations on the sets of sentences of the π-institution that are preserved both by signature morphisms and by fixed collections of natural transformations from finite tuples of sentences to sentences. Based on this notion of a congruence system, the notion of...

In this note, we introduce the concept of a fuzzy filter of a BLalgebra,with respect to a t-norm briefly, T-fuzzy filters, and give some relatedresults. In particular, we prove Representation Theorem in BL-algebras. Thenwe generalize the notion of a fuzzy congruence (in a BL-algebra) was definedby Lianzhen et al. to a new fuzzy congruence, specially with respect to a tnorm.We prove that there i...

School connectedness, encompassing positive feelings toward teachers and peers and a sense of belonging at school, has been touted as a critical factor in promoting student achievement and reducing youth risk behaviors. The literature has been mixed in terms of understanding the relationship between race, racial congruence and school diversity’s influence on school connectedness, particularly f...

Work status congruence is the extent to which employees’ current work status (full time or part time) is congruent with their desired work status (Maynard, Thorsteinson & Parfyonova, 2006). Work status incongruence occurs when employees’ work status is inconsistent with their preferred work status, i.e., they are working full time but prefer to work part time or they are working part time but p...

In their work, Serre and Swinnerton-Dyer study the congruence properties of the Fourier coefficients of modular forms. We examine similar congruence properties, but for the coefficients of a modified Taylor expansion about a CM point τ . These coefficients can be shown to be the product of a power of a constant transcendental factor and an algebraic integer. In our work, we give conditions on τ...