نتایج جستجو برای: physical model
تعداد نتایج: 2649977 فیلتر نتایج به سال:
the shape of a submerged vane is a major factor in the design of a vane system and affects the performance and secondary currents generated by the vanes. this study investigated the effect of five vane shapes on bed sediment processes (local scour at the leading edge and transverse distribution of sediment downstream of the vanes) at four flow intensities for a total of 20 experiments. the resu...
aims: most of the world population who is at work and production age does not have appropriate and regular physical activity for various reasons. accordingly, the researchers tried to evaluate the effect of physical activity predictors of employees through the path analysis based on the pender's health promotion model (hpm). methods and materials: we conducted this study on 359 employees of the...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
چکیده ندارد.
liquefaction is one of the most important and complex topics in geotechnical earthquake engineering. in recent years, passive site stabilization method has been proposed for non-disruptive mitigation of liquefaction risk at developed sites susceptible to liquefaction using colloidal nano-silica stabilizer. in this research, 4 box models were used to investigate the ability to uniformly deliver ...
background: lifestyle-modification programs including physical activity are essential for both treatment and prevention of type 2 diabetes mellitus ( t2dm ). however, factors associated with physical activity among patients are poorly understood. this study applied social-cognitive theory (sct) for predicting determinants of physical activity among women with t2dm in iran, 2013. methods: in thi...
conclusions this study indicated that health belief model contrasts could predict the risky behavior of university students due to heart disease. however, more researches are needed to verify the predictors of high risky behaviors in students. background disease preventing methods focus mostly on lifestyle factors such as physical activity, healthy diet and not smoking. previous studies verifie...
the pile-raft foundation is a combination of a raft foundation with piles. pile-raft foundation has been widely designed, assuming all structure loads to be transferred to piles without considering contribution of the load taken by contact surface between raft and soil. methods of analysis currently used in practice are based upon relatively conservative assumptions of soil behavior or on the l...
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