نتایج جستجو برای: effective parameter

تعداد نتایج: 883883  

Nuclear level density is one of the most important concepts in nuclear physics; basically, it is the key in dealing with nuclear statistical problems. This quantity plays an essential role in the statistical calculation of reactor physics, astrophysics, researches in the average energy of heavy- ion collision and calculations related to neutron evaporation and other applications. This quantity ...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
a. johari m. momeni a. a. javadi

reliability analysis of rock slope stability has received considerable attention in the literature. it has been used as an effective tool to evaluate uncertainty so prevalent in variables. in this research the application of the jointly distributed random variables method for probabilistic analysis and reliability assessment of rock slope stability with plane sliding is investigated. in a recen...

Journal: :journal of current ophthalmology 0
هادی استادی مقدم hadi ostadimoghaddam محمدرضا صداقت mohammad reza sedaghat سیدحسین حسینی یزدی seyyed hosein hoseini yazdi حامد نیازمند hamed niyazmand

purpose : to investigate the correlation between corneal biomechanical properties and tomographic parameters of pentacam methods : corneal biomechanical properties and tomographic results of 36 normal subjects were measured by ocular response analyzer (ora) and pentacam and the correlation between these two measurements were analyzed with pearson correlation test with spss version16. results : ...

2004
W. J. Parnell

The problem of fully coupled thermoelasticity in a composite half-space is considered where the composite has variations in its physical properties in one direction only. The resulting one dimensional problem thus depends on the so called microscale of the composite. Homogenization of the fully coupled theory provides the leading order system of coupled equations (independent of the microscale)...

2009
D. D. Bosch

Steady-state and transient one-dimensional unsaturated flow in vertically stratified porous media are examined. Saturated hydraulic conductivity and the alpha parameter of the exponential hydraulic conductivity function were assumed to vary from soil layer to soil layer. The use of effective unsaturated hydraulic conductivity to compute matric potential in the soil profile is demonstrated. Resu...

Journal: :مرتع و آبخیزداری 0
علی طالبی دانشیار، دانشکده منابع طبیعی و کویرشناسی دانشگاه یزد، ایران شهربانو عباسی جندانی دانشجوی دکترای علوم و مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران

wepp model needs a great deal of input data.  identifying the model’s sensitive parameters and their prioritization increases the accuracy and efficiency of the model. on the other hand, wepp model can simulate processes affecting on runoff, erosion and sediment throughout the year. thus, model sensitivity must vary based on the storm occurrence time and parameters value in different sections o...

1992
Matthias Neubert

We reformulate the heavy quark effective theory in the presence of a residual mass term, which has been taken to vanish in previous analyses. While such a convention is permitted, the inclusion of a residual mass allows us to resolve a potential ambiguity in the choice of the expansion parameter which defines the effective theory. We show to subleading order in the mass expansion that physical ...

1992
Adam F. Falk Matthias Neubert

We reformulate the heavy quark effective theory in the presence of a residual mass term, which has been taken to vanish in previous analyses. While such a convention is permitted, the inclusion of a residual mass allows us to resolve a potential ambiguity in the choice of the expansion parameter which defines the effective theory. We show to subleading order in the mass expansion that physical ...

Journal: :international journal of advanced design and manufacturing technology 0
esmaeil barzekar mohamadreza forouzan

materials exhibit significant creep behavior at temperatures above 40% of their absolute melt temperature. lead, tin and their alloys are such materials which experience significant creep behavior in room temperature. one of the most important applications of the tin-lead alloys is soldering electronic circuits in electronic industry, and for lead are isolation walls and wet batteries. room tem...

2012
Tomáš Brauner

We revisit the center-symmetric dimensionally reduced effective theory for two-color Yang–Mills theory at high temperature. This effective theory includes an order parameter for center symmetry breaking/restoration and thus allows to broaden the range of validity of the conventional threedimensional effective theory (EQCD) to lower temperatures, towards the confining phase transition. We extend...

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