This paper shows that the stress field in the classical theory of continuum mechanics may be taken to be a covector-valued differential two-form. The balance laws and other fundamental laws of continuum mechanics may be neatly rewritten in terms of this geometric stress. A geometrically attractive and covariant derivation of the balance laws from the principle of energy balance in terms of this...

A recent special issue of the Journal of Anxiety Disorders, reviewed the experimental and clinical findings related to comorbidity of balance disorders and anxiety [J. Anxiety Disord. 15 (2001) 1.]. The studies mentioned in that issue were based mostly on adult subjects but prevalence of balance disorders in childhood anxiety is yet to be established. We have tested a small sample of children d...

The analysis of macroeconomic variables for current situation in Iran indicates a Conundrum. Solving this puzzle is vital for Central Bank of Iran in order to choose an appropriate approach for monetary policy and banking supervision. Increase in liquidity growth rate, significant decrease of inflation rate and interest rate rigidity are the three sides of this puzzle. This study designs an inn...

Forests are among the most important renewable natural resources. While having a great range of benefits, crucial advantage forests is production oxygen and absorption pollutants. Thus, current article attempts to examine forest exploitation as source wood prevent overexploitation. Three smugglers, residents, timber companies exploit this resource. There competition for perception common betwee...