نتایج جستجو برای: compensated variation cv
تعداد نتایج: 337413 فیلتر نتایج به سال:
This article examines the statistical determinants of risk preference. In a meta-analysis of animal risk preference (foraging birds and insects), the coefficient of variation (CV), a measure of risk per unit of return, predicts choices far better than outcome variance, the risk measure of normative models. In a meta-analysis of human risk preference, the superiority of the CV over variance in p...
The principle that the standard deviation of estimates scales with the mean estimate, commonly known as the scalar property, is one of the most broadly accepted fundamentals of interval timing. This property is measured using the coefficient of variation (CV) calculated as the ratio between the standard deviation and the mean. In 1997, John Gibbon suggested that different time measurement mecha...
Variance is a statistical parameter used to characterize heterogeneity or variability in data sets. However, measurements commonly include noise, as random errors superimposed to the actual value, which may substantially increase the variance compared to a noise-free data set. Our aim was to develop and validate a method to estimate noise-free spatial heterogeneity of pulmonary perfusion using ...
Temperature variations are one of the most crucial factors that need to be compensated for in MEMS sensors. Many traditional methodologies require an additional circuit compensate temperature. This work describes a new active temperature compensation method capacitive strain sensors without circuits. The proposed is based on complement 2-D structure design. It consumes zero-power, which essenti...
Background: Previous studies have demonstrated that donor-derived cell-free DNA (dd-cfDNA) found in circulating blood of transplant recipientsmay serve as a noninvasive biomarker of allograft rejection. To better interpret the clinicalmeaning of dd-cfDNA, it is essential to understand the biological variation of this biomarker in stable healthy recipients. This report establishes the biological...
OBJECTIVE Knowledge of variation in thyroid function is important for interpretation of thyroid function tests. We aimed to describe intra-individual variation in thyroid function in patients with stable, untreated subclinical hypothyroidism (SCH) compared to euthyroid individuals to assess the importance of monitoring SCH patients. DESIGN We measured thyrotropin (TSH), free thyroxine (fT4), ...
Temperature sensitivity of soil organic carbon (SOC) mineralization (i.e., Q10) determines how strong the feedback from global warming may be on the atmospheric CO2 concentration; thus, understanding the factors influencing the interannual variation in Q10 is important for accurately estimating local soil carbon cycle. In situ SOC mineralization rate was measured using an automated CO2 flux sys...
This paper describes empirical results of information retrieval in 13 languages of the Cross Language Evaluation Forum (CLEF) collection augmented with results of Turkish using syllables as a means to manage morphological variation in the languages. This kind of approach has been used in speech retrieval (e.g. Larson and Eickeler 2003), but for some reason it has not been much tried out in text...
Over recent years, changes of erythrocytic nuclei have been increasingly used to evaluate genotoxic effects of different compounds such as polycyclic aromatic hydrocarbons (benzo-a-pyrene, naphthalene, β-naphthoflavone), heavy metals (cadmium, mercury), textile mill effluent especially in aquatic ecosystem. However, in fish, both micronuclei and erythrocytic nuclear abnormalities also appear sp...
There is an emerging consensus that parasitoids are limited by the number of eggs which they can lay as well as the amount of time they can search for their hosts. Since egg limitation tends to destabilize host-parasitoid dynamics, successful control of insect pests by parasitoids requires additional stabilizing mechanisms such as heterogeneity in the distribution of parasitoid attacks and host...
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