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Advanced Search Results For "MEASUREMENT errors"

1 - 10 of 28,051 results for
 "MEASUREMENT errors"
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Impact of Using Double Positive Samples in Deming Regression.

Publication Type:Academic Journal

Source(s):International Journal of Mathematics & Mathematical Sciences. 8/12/2022, p1-8. 8p.

Abstract:In the method comparison approach, two measurement errors are observed. The classical regression approach (linear regression) method cannot be used for the analysis because the method may yield biased and inefficient estimates. In view of that, the Dem...

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基于对冲火焰的碳烟辐射光谱测量及误差分析.

Publication Type:Academic Journal

Source(s):Journal of Jiangsu University-Natural Science Edition / Jiangsu Daxue Xuebao-Ziran Kexue Ban. 2022, Vol. 43 Issue 4, p488-496. 9p.

Abstract:基于碳烟多光谱辐射法(SSE),测量了乙烯对冲火焰温度和碳烟体积分数分布.为了有效地 降低 SSE 试验的测量误差,提高试验精度,利用数值模拟的方法,定量地研究了多个因素对于对冲 火焰温度和碳烟体积分数测量的影响.研究表明:光谱仪信噪比导致低温区温度和碳烟体积分数 的测量严重失真;忽略碳烟的自吸收效应,碳烟体积分数将被高估,温度将被低估,且利用较长波 段的辐射数据,可以在一定程度上降低由于忽略自吸收效应所带来的影响;标定源温度误差所导 致的辐射强度标定误差只影响温度测量的精度,光阑孔径偏差只影响碳烟...

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Impact of measurement error on mixed EWMA-CUSUM control chart.

Publication Type:Academic Journal

Source(s):Scientia Iranica. Transaction E, Industrial Engineering. Jul/Aug2022, Vol. 29 Issue 4, p2134-2148. 15p.

Abstract:In statistical process control, measurement error plays a key role that is usually ignored. Measurement error can yield incorrect conclusions about the performance of the process. This study examined the effect of measurement error on the shift detecti...

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Generalized variance estimator using auxiliary information in the presence and absence of measurement error.

Publication Type:Academic Journal

Source(s):Scientia Iranica. Transaction B, Mechanical Engineering. Jul/Aug2022, Vol. 29 Issue 4, p1868-1879. 12p.

Abstract:This study proposes a new generalized estimator based on auxiliary information for the estimation of population variance in the presence and absence of measurement error. Approximate expressions of bias and mean square error of the proposed generalized...

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Applicable Measuring Range of Two-Electrode Type Commercial Electrolytic Conductivity Meter for Accurate Determination of Electrolytic Conductivity.

Publication Type:Academic Journal

Source(s):Journal of Chemistry. 5/19/2022, p1-6. 6p.

Abstract:Applicable measuring range of electrolytic conductivity (EC) for commercially available two-electrode type EC meter was examined. The measurement error caused by a gap in ECs between the measurement sample and the standard solution was also evaluated. ...

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Assessment of multiple choice question exams quality using graphical methods.

Publication Type:Academic Journal

Source(s):Journal of University Teaching & Learning Practice. 2022, Vol. 19 Issue 3, p1-18. 19p.

Abstract:Exams should be valid, reliable, and discriminative. Multiple informative methods are used for exam analysis. Displaying analysis results numerically, however, may not be easily comprehended. Using graphical analysis tools could be better for the perce...

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Asymptotic Properties for Estimators in a Semiparametric EV Model with NA Errors and Missing Responses.

Publication Type:Academic Journal

Source(s):Discrete Dynamics in Nature & Society. 3/11/2022, p1-17. 17p.

Abstract:This article deals with the semiparametric errors-in-variables (EV) model y i = ξ i β + g t i + ϵ i , x i = ξ i + μ i , where y i are the random missing response variables, ξ i , t i are the design points, ξ i are the potential variables observed with ...

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Estimation of mean considering the joint influence of measurement errors and non-response in two-phase sampling designs.

Publication Type:Academic Journal

Source(s):Journal of the National Science Foundation of Sri Lanka. Mar2022, Vol. 50 Issue 1, p13-25. 13p.

Abstract:Recently, a few studies have presented the problem of estimation of the mean for a finite homogenous population considering the joint influence of non-response and measurement errors and following the assumption that population mean of auxiliary variab...

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Diagnosis of the Technical Condition of High-tech Complexes by Probabilistic Methods.

Publication Type:Academic Journal

Source(s):TransNav: International Journal on Marine Navigation & Safety of Sea Transportation. Mar2022, Vol. 16 Issue 1, p105-111. 7p.

Abstract:When designing multilevel systems for monitoring the parameters and characteristics of high-tech complexes, it is necessary to effectively control the state of the elements of generating units. Existing control systems for their specification and techn...

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Additive distortion measurement errors regression models with exponential calibration.

Publication Type:Academic Journal

Source(s):Journal of Statistical Computation & Simulation. Sep2022, Vol. 92 Issue 14, p3020-3044. 25p.

Abstract:In this paper, we used the newly proposed exponential calibration for the additive distortion measurement errors models, where neither the response variable nor the covariates can be directly observed but are distorted in additive fashions by an observ...

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