Results 221 to 230 of about 900,847 (260)

Variability of CO2-Sensitivity During Sleep

2001
The hypercapnic ventilatory response (HCVR) in man varies markedly during sleep. Rebreathing tests during well-defined sleep/wake states in adults showed that the HCVR was significantly reduced in all stages of sleep compared with wakefulness, falling to less than 50% of wakefulness during NREM sleep and less than 30% during REM sleep1.
T, Schäfer, M E, Schläfke
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Variable sensitivity in the microbiuret assay of protein

Analytical Biochemistry, 1978
Abstract Microbiuret methods have been introduced which have sensitivity similar to that of the method of Lowry et al. (1) and are claimed to be less subject to interference (2–5). Each method has three steps: (I) formation of the protein-copper biuret complex in alkaline solution, (II) separation of excess copper reagent from protein-bound copper ...
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Fixed and Variable Constraints in Sensitivity Analysis

SIAM Journal on Control and Optimization, 1980
Sufficient conditions are obtained for the $\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{C} ^1 $ dependence on a parameter of a local minimizes and associated Lagrange multipliers for parametrized families of nonlinear programming problems in which some constraints do not vary with the parameter. A class of sets, called “cyrtohedra”, with
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Generalized exponential type estimator for the mean of sensitive variable in the presence of non-sensitive auxiliary variable

Communications in Statistics - Theory and Methods, 2020
We proposed a generalized two stage optional randomized response model by single sample approach and developed a generalized exponential type estimator for the mean of sensitive variable using info...
Zara Waseem, Hina Khan, Javid Shabbir
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Is climate sensitive to solar variability?

Physics Today, 2008
The causes of global warming—the increase of approximately 0.8±0.1 °C in the average global temperature near Earth’s surface since 1900—are not as apparent as some recent scientific publications and the popular media indicate. We contend that the changes in Earth’s average surface temperature are directly linked to two distinctly different aspects of ...
SCAFETTA, NICOLA, West B. J.
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Interindividual variability in sensitivity to warfarin-Nature or nurture?

Clinical Pharmacology & Therapeutics, 2001
Interindividual variability in responses to warfarin is attributed to dietary vitamin K, drug interactions, age, or genetic polymorphism in the cytochrome P4502C9 enzyme (CYP2C9) (allelic variants 2C9*2 and 2C9*3 ) linked with impaired metabolism of the potent enantiomere S-warfarin.We quantified the relative effects of age and of simultaneously ...
R, Loebstein, H, Yonath, D, Peleg, S, Almog, M, Rotenberg, A, Lubetsky, J, Roitelman, D, Harats, H, Halkin, D, Ezra   +9 more
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Variability of HOMA and QUICKI insulin sensitivity indices

Scandinavian Journal of Clinical and Laboratory Investigation, 2017
Assessment of insulin sensitivity based on a single measurement of insulin and glucose, is both easy to understand and simple to perform. The tests most often used are HOMA and QUICKI. The aim of this study was to assess the biological variability of estimates of insulin sensitivity using HOMA and QUICKI indices.
Miloš, Žarković, Jasmina, Ćirić, Biljana, Beleslin, Mirjana, Stojković, Slavica, Savić, Miloš, Stojanović, Tijana, Lalić   +6 more
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Sensitivity Analysis and Variable Screening

2018
This chapter discusses sensitivity analysis and the related topic of variable screening. The setup is as follows. A vector of inputs \(\boldsymbol{x} = (x_{1},\ldots,x_{d})\) is given which potentially affects a “response” function \(y(\boldsymbol{x}) = y(x_{1},\ldots,x_{d})\). Sensitivity analysis seeks to quantify how variation in \(y(\boldsymbol{x})\
Thomas J. Santner, Brian J. Williams, William I. Notz   +2 more
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The Sensitivity Function in Variability Analysis

IEEE Transactions on Reliability, 1966
Methods of variability analysis include deterministic approaches, e.g., ``worst case'' methods, ``Shmoo Plots,'' and probabilistic approaches (Monte Carlo and Moment methods). Most of these use as a point of departure the Taylor Series expansion of the performance function about the nominal operating point with all but first-order terms neglected.
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Sensitivities by the state variable approach

SIMULATION, 1967
The well-known procedures for calculating transient-re sponse sensitivities, frequency-response sensitivities, and pole sensitivities have been successfully and profitably applied for several years. However, the usual formulations are not well suited for analysis of large systems on modern analog or digital computers.
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