نتایج جستجو برای: calculation

تعداد نتایج: 101943  

1993
Allin Cottrell Paul Cockshott

This paper offers a reassessment of the socialist calculation debate, and examines the extent to which the conclusions of that debate must be modified in the light of the subsequent development of the theory and technology of computation. Following an introduction to the two main perspectives on the debate which have been offered to date, we examine the classic case mounted by von Mises against...

Journal: :iranian journal of ichthyology 0
seyedeh narjes tabatabaei department of fisheries, faculty of natural resources, university of tehran, karaj, 4111, iran. iraj hashemzadeh-segherloo department of fisheries and environmental sciences, faculty of natural resources and earth sciences, shahr-e-kord university, shahr-e-kord, 115, iran. asghar abdoli department of biodiversity and ecosystem management, environmental research institute, university of shahid beheshty, g.c. velenjak, tehran, iran. maryam milani department of biodiversity and ecosystem management, environmental research institute, university of shahid beheshty, g.c. velenjak, tehran, iran. rouhollah mirzaei department of environmental sciences, faculty of natural resources and earth sciences, kashan university, kashan, isfahan, iran.

this study presents data on age structure, sex ratio, growth, length-weight relationships and condition factor of four populations (n=312) of  two alburnoides species, collected in 2005 and 2006 from the tajan river (caspian sea basin), the ghara-chai and jajrud rivers (namak lake basin), and cheshmeh-ali spring (kavir basin) of iran. sex ratio of the fish, in the studied localities, except in ...

Journal: :journal of physical and theoretical chemistry 0
masoome sheikhi iran, islamic azad university siyamak shahab institute of physical organic chemistry, national academy of sciences of belarus,13 surganov str, minsk 220072, belarus

in the present work, the quantum theoretical calculations of the molecular structure of the 1-(1, 3-benzothiazol-2-yl)-3-(thiophene-5-carbonyl) thiourea has been predicted and are evaluated using density functional theory (dft) in gas phase. the geometry of the title compound was optimized by b3lyp/6-311+g and b3lyp/6-311+g* methods and the experimental geometrical parameters of the title compo...

Journal: :Journal of the Illuminating Engineering Institute of Japan 1993

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1389

هدف: برای به دست آوردن بیشترین فواید از جراحی stn-dbs، هدف باید به دقت معین شود. برای سالها، بهترین روش آناتومیک برای هدف¬یابی stn مورد چالش بوده است. هدف از این مطالعه، تعیین دقیقترین روش مکان¬یابی آناتومیک stn (هدف¬یابی on-screen mri مستقیم، در نماهای کرونال و اگزیال؛ هدف¬یابی کامپیوتری با نرم¬افزار در نماهای کرونال و اگزیال، هدف¬یابی بر اساس اطلس شالتربراند-وارن، و روش هدف-یابی ترکیبی) در مق...

بانشی, محمد رضا, حقدوست, علی اکبر, مرزبان, مریم,

In the previous paper, the basic concepts of sample size calculation were presented. This paper explores main post-calculation adjustments of the sample size calculation in special circumstances such as multiple group comparisons, unbalanced studies (with unequal number of subjects in different groups) sample size correction for missing data, and adjustment for finite population size. In additi...

Journal: :AI & SOCIETY 2010

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