To achieve a mathematics learning goal, it is necessary to understand mathematical concept make easier determine solution. However, in class there are still difficulties achieving these objectives, especially area of surface cube and cuboid. One the students occurs because existence obstacles for known as Learning Obstacles. The research design this study uses qualitative method by identifying ...

Thermophysical properties of fluorine are interesting because of its applications in different areas of technologyand industry. The computations of thermodynamic properties were performed with the GMA equation of stateunder critical conditions. The present work reports calculations of density, volumetric, and thermodynamicproperties of liquid fluorine on extended ranges of pressure and temperat...

How does the brain represent number and perform mathematical calculations? According to a recent and provocative study by Tang and colleagues, it depends on which language you learn. They found that the divergent linguistic and cultural experiences of native Chinese and native English speakers are associated with distinct patterns of brain activity during mathematical processing. Their results ...

Poverty is a widespread problem not only inflicting poor nations, but also nations like the United States of America. In the history of the United States, women and racial minorities had always been persistently struggling with poverty. This paper intends to investigate poverty among Hispanic women between 2005 and 2010 and identify and analyze the relevant contributing factors. Within this per...

This paper looks at different rules in dissolving a common value partnership when one partner holds proprietary information. In winner’s bid auction (WBA) and loser’s bid auction (LBA), there exists unique mixed strategy equilibrium. “Payoff equivalence” is established in the sense that partners’ expected payoffs are the same under the two auction formats. The informed partner benefits from an ...

the present research simulates time-periodic unsteady transonic flow around pitching airfoils via the solution of unsteady euler and navier-stokes equations, using time spectral method (tsm) and compares it with the traditional methods such as bdf and explicit structured adaptive grid method. the tsm uses a fourier representation in time and hence solves for the periodic state directly accordin...

from the mathematical point of view, the fao penman-monteith equation shows a homographic function related to the wind speed. the homographic function has horizontal and vertical asymptotes. in this issue horizontal asymptote is applicable; because the vertical asymptote occurs for negative values of wind speed but the negative sign indicates the direction of the wind speed and only the absolut...

The scarcity of water resources and supply resources limitation, have caused an increasing gap between water supply and demand specially in recent decades in almost all regions of the globe. One of the best known solutions proposed by the economists is using the different water pricing approaches thereby obtaining the optimal allocation and social justice. To this purpose, this paper uses the p...