In spite of the fact that the effect of earthquake on earth dams has been widely studied during the past decades, the complicated behavior of such earth structures against different seismological characteristics is still unknown. Such ambiguities necessitate more accurate studies using more comprehensive computation tools to achieve new results describing the behavior of such structures subject...

In recent years it has become apparent that the performance of detection sensors for land mines and UXO may be seriously hampered by the magnetic behavior of soils. In tropical soils it is common to find large concentrations of iron oxide minerals, which are the predominant cause for soil magnetism. However, a wide range of factors such as parent material, environmental conditions, soil age, an...

in this research a numerical analysis using plaxis program has been carried out to investigate the behavior of buried concrete box culverts different parameters including load types, loading locations, culvert dimensions, underlying soil specifications, and the coefficient of earth pressure- at- rest. for modeling purpose, patch loading of rtuck or military tank has been substituted to an equiv...

The simulation of soil deformation in real-time is a challenging task. Realizing the strengths and weaknesses of particle and mesh-based approaches we propose a hybrid model that combines both. Together with an adaptive sampling method, which effectively reduces the number of particles in the simulation, and a selective update technique our method is applicable in real-time VR environments. Fur...

This paper investigates kinetic behavior of a planetary rover with attention to tire-soil traction mechanics and articulated body dynamics, and thereby study the control when the rover travels over natural rough terrain. Experiments are carried out with a rover test bed to observe the physical phenomena of soils and to model the traction mechanics, using the tire slip ratio as a state variable....

background: this study examined the applicability of trans-theoretical model (ttm) to understand exercise behavior among female college students in hamadan university of medical sciences, iran in 2007. methods: a cross-sectional descriptive study was conducted. the dependent variables analyzed were exercise efficacy expectation, decisional balance (pros and cons). the independent variable was s...

earlier, environmental problems have been considered as technical and economic problems. in the last decades of the twentieth century the societal dimensions of environmental problems and environmental issues attracted more public attention. as a result of this circumstances a new social scientific discipline, “environmental sociology” was appeared to investigate the environmental behavior ...

the effect of temperature on the viscoelastic behavior of chicken meat frankfurters was assessed by creep recovery tests. compression creep-recovery tests were performed at room temperature (20°c) and refrigeration (5°c) on samples of cylindrical shape. the viscoelastic behavior of samples was characterized based on the parameters of the four-element burgers model. during the compression phase,...

In this paper we suggest a method to calculate the first integrals of a special system of the first order of differential equations. Then we use the method for finding the solutions of some differential equations such as, the differential equation of RLC circuit