نتایج جستجو برای: independent parameters

تعداد نتایج: 996510  

Response surface methodology (RSM) is a statistical method useful in the modeling and analysis of problems in which the response variable receives the influence of several independent variables, in order to determine which are the conditions under which should operate these variables to optimize a corrugated box production process. The purpose of this research is to create response surface mode...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1372

a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...

The momentum equation in the kinematic wave model is a power-law equation with two parameters. These parameters, which relate the discharge to the flow area, are commonly derived using Manning’s equation. In general, the values of these parameters depend on the flow depth except for some special cross sections. In this paper, improved estimates of the kinematic wave parameters for circular chan...

Journal: :iranian journal of fuzzy systems 2008
a. r. arabpour m. tata

fuzzy linear regression models are used to obtain an appropriate linear relation between a dependent variable and several independent variables in a fuzzy environment. several methods for evaluating fuzzy coefficients in linear regression models have been proposed. the first attempts at estimating the parameters of a fuzzy regression model used mathematical programming methods. in this the...

2007
Pierre Druilhet Jean-Michel Marin

Abstract. MAP estimators and HPD credible sets are often criticized in the literature because of paradoxical behaviour due to a lack of invariance under reparametrization. In this paper, we propose a new version of MAP estimators and HPD credible sets that avoid this undesirable feature. Moreover, in the special case of non-informative prior, the new MAP estimators coincide with the invariant f...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2014
Khaled Abduljalil Theresa Cain Helen Humphries Amin Rostami-Hodjegan

Prediction accuracy of pharmacokinetic parameters is often assessed using prediction fold error, i.e., being within 2-, 3-, or n-fold of observed values. However, published studies disagree on which fold error represents an accurate prediction. In addition, "observed data" from only one clinical study are often used as the gold standard for in vitro to in vivo extrapolation (IVIVE) studies, des...

2005
Chris Collins

I propose a theory of the passive that combines aspects of the principles and parameters analysis (no specific rules, no downward movement) and Chomsky’s (1957) Syntactic Structures analysis (the arguments in the passive are generated in the same positions as they are in the active).

2003
David C. Krakauer Joshua B. Plotkin

A large number of molecular mechanisms exist to ensure the continued function of perturbed cells. Here we explore a range of mechanisms of molecular robustness. A theory of robustness is proposed in which mechanisms are classified into those that purge damage, and those that buffer damage. The strategy upon which a system settles, is a function of the cost of purgation, and thereby a function o...

1997
Chung-Ju Chang Chih-Feng Juan Yung-Chih Lin Ray-Guang Cheng

Thas paper presents the desagn of a fuzzy usage parameter controller (FUPC) for ATM (asynchronous transfer mode) networks The usage parameter control (UPC) as here based on a dual leaky bucket (DLB) mechanasm, wath parameters of token generatzon rate and token pool saze. In FUPC, we further e m p l o y parameters of token-change rate and anterarnval tame of zncomzng cells as znput languastac va...

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