Symbolic Computation is a Computer Algebra System (CAS) which is developed to compute the symbolic mathematical expressions consisting simple or complex calculations. Symbolic Computation provides the interface to provide input expression in a typical mathematical format. Mathematical problems related to algebra, logarithm, roots, sum & product of series etc can be solved using this package. Us...

In recent years, a large number of mathematical models water quality have been developed which can be used for predictive calculations under certain conditions. This work is mainly devoted to the mechanical aspects substances transport in watercourse systems. It practically possible quickly determine concentration impurities river only by methods modelling transport.

In this paper, a new method is introduced for improving the efficiency of the Residue Number System, which uses both binary and residue representations in order to represent a number. A residue number system uses the remainder of the division in several different modules. Conversion of a number to smaller ones and carrying out parallel calculations on these numbers greatly increase the speed of...

this research presents a mathematical model for oil and gas optimal allocation to different sectors in iran using operations research techniques. sectors are residential and commercial, transportation, industries, agriculture, exports, injection to oil reservoirs and power plans as a secondary energy producer. optimal allocation of energy resources to end-uses from 2011 to 2021 has been done us...

today, mass media act like a magic mirror, not only reflecting the reality of societies, but also projecting a variety of images onto people’s thoughts. because of this great ability to produce, reproduce and disperse images, mass media have acquired considerable influence on people’s lives. among the different media, the television in particular has become an inseparable part of most iranian h...

We consider some unusual phenomena that appear in long consecutive calculations due to a new sort of round-oo errors of Pentium oating point division bug type. Mathematical model of these round-oo errors is proposed and new phenomena in numerical simulations of dynamical systems (diierential equations) and other numerical procedures are discussed. It is shown also that these new phenomena could...

During the complete oxidation of fatty acids, the electrons removed from fatty acids in different forms (FADH2 and NADH2) pass through the respiratory chain, driving the ATP synthesis. Generally, the ATP yield due to the complete oxidation of fatty acids is calculated by sum total the ATPs obtained due to the oxidation of FADH2 and NADH2 due to lack of any particular method. This calculation is...

S ome mathematicians are birds, others are frogs. Birds fly high in the air and survey broad vistas of mathematics out to the far horizon. They delight in concepts that unify our thinking and bring together diverse problems from different parts of the landscape. Frogs live in the mud below and see only the flowers that grow nearby. They delight in the details of particular objects, and they sol...

In the eighteenth century, dramatic electrical performances were favourite entertainments for the upper classes, yet the therapeutic uses of electricity also reached the lower strata of society. This change in the social composition of electrical audiences attracted the attention of John Wesley, who became interested in the subject in the late 1740s. The paper analyses Wesley's involvement in t...