نتایج جستجو برای: particle

تعداد نتایج: 174530  

In this paper, a generalized particle system (GPS) method, a general method to describe multiple strong form representation based particle methods is described. Gradient, divergence, and Laplacian operators used in various strong form based particle method such as moving particle semi-implicit (MPS) method, smooth particle hydrodynamics (SPH), and peridynamics, can be described by the GPS metho...

حمیدرضا فولادمند, ,

  Soil particle size distribution and bulk density are used for estimating soil-moisture characteristic curve. In this model, soil particle size distribution curve is divided into a number of segments, each with a specific particle radius and cumulative percentage of the particles greater than that radius. Using these data, soil-moisture characteristic curve is estimated. In the model a scale f...

ژورنال: علوم آب و خاک 2007
حمیدرضا فولادمند, ,

  Soil particle size distribution and bulk density are used for estimating soil-moisture characteristic curve. In this model, soil particle size distribution curve is divided into a number of segments, each with a specific particle radius and cumulative percentage of the particles greater than that radius. Using these data, soil-moisture characteristic curve is estimated. In the model a scale f...

G. Amba Prasad Rao, N. Gajarlawar,

The current regulated particle metric in vehicle emissions is the total mass, while during last decade interest in number size distribution has increased. Various international studies on epidemiology and toxicology have reported the adverse effect of the particle matter on public health. The UNECE group of experts on pollution and energy (GRPE) under particle measurement program (PMP) are u...

Journal: :Chaos: An Interdisciplinary Journal of Nonlinear Science 2006

2007
Carl Graham CARL GRAHAM

Under the natural partial exchangeability assumption for multi-class interacting particle systems, we prove that these converge to an independent system with innite i.i.d. classes if and only if the empirical measure of each class satises a weak law of large numbers. This extension of a classical result for exchangeable systems (related to the de Finetti Theorem) is somewhat surprising, since t...

2013
Dmitri L. Finkelshtein Maria João Oliveira D. Finkelshtein M. J. Oliveira

This work is a survey on Bogoliubov functionals and their applications to the study of stochastic evolutions on states of continuous infinite particle systems. 1 Bogoliubov generating functionals Let Γ := Γ Rd be the configuration space over R d , d ∈ N, Γ := { γ ⊂ R : |γ ∩Λ |< ∞ for every compact Λ ⊂ R }

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1390

این پایان نامه روی ردیابی خودکار چندین چهره که هم اکنون یک مسئله ی پرچالش در کاربردهایی نظیر ارتباط متقابل انسان و کامپیوتر، سیستم های دیده بانی و امنیت هوشمند می‏باشد، تمرکز دارد. از آن جا که آشکارسازی چهره مرحله ی مقدماتی بسیاری از کاربردها از جمله ردیابی چهره می‏باشد، ابتدا ضمن مطالعه ی انواع روش های آشکارسازی و مزایا و معایب هر کدام، یک آشکارساز چهره ی مناسب به منظور استفاده در سیستم ردیاب ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
behzad shahbazi bahram rezai

frothers havea profoundeffectonbubble size and also flotation efficiency. in present study the effect of type and dosage of frothers on the flotation response of coarse particles of quartz was investigated.  therefore, flotation response of coarse particles using frothers such as mibc, pine oil, poly propylene glycol with concentration of 0, 25, 50 and 75 g/t, was obtained respectively. for all...

Journal: :دانش آب و خاک 0
بیژن راعی دانشجوی دکتری، گروه علوم خاک، دانشکده کشاورزی دانشگاه تبریز حسین اسدی دانشیار گروه علوم و مهندسی خاک، پردیس کشاورزی و منابع طبیعی دانشگاه تهران فرخ اسدزاده استادیار گروه علوم خاک، دانشکده کشاورزی دانشگاه ارومیه

the angle of repose of soil particles is an important factor for determining critical shear stress for initiation of soil particles motion during the erosion process. there are different methods for measuring the angle of particle repose and the result of each method is somewhat different from those of the others. sliding and fixed-base piling methods are the two most common methods in the lite...

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