Gerald J. Hahn’s research while affiliated with GE Global Research and other places

... The reference interval may be considered a prediction interval [48] estimated from a sample of n reference values using the t-distribution as follows. Since the t 0.975, n-1 is 2.045 for n = 30, using 1.96 times the standard deviation when demarcating parametric reference intervals is appropriate when the number of reference intervals is 30 or more. ...

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Laboratory reference intervals - history and modern approaches for improved utility

... In recent work, Ruiz-Pastor and Mesa (2023) proposed an integrated framework for measuring repairability in product design, emphasizing its impact on cost savings and customer loyalty. Gupta et al. (2013) Doganaksoy et al. (2021) analyzed the long-term financial benefits of reliability-focused design, linking product uptime and customer satisfaction to sustained business growth. Based on this literature, we built the following hypotheses: ...

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The impact of circular economy practices on firm performance: evidence from the Western Balkans

... This will lead to a continued expansion of the virtual economy and may even bring the real economy to a standstill (Allen et al., 2019;Liu et al., 2022). At the micro level, the impact of the increase in financial assets on enterprises is reflected through the crowding out of physical investment and R&D, lowering audit quality, raising the cost of debt capital, and reducing labor productivity (Du et al., 2017;Tori, Onaran, 2018;Hahn et al., 2019;Liu et al., 2022;Jin et al., 2022). As we can see, most academic empirical studies on financial asset allocation have focused on the linear relationship. ...

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Financial asset allocation duality and enterprise upgrading: empirical evidence from the Chinese A-share market

... We describe an approach that we have discussed previously, first in 1974 in Chemtech, a now-defunct Scientific Americantype journal for chemists and chemical engineers, published by the American Chemical Society, 2 and again in November 2017 in Quality Progress (QP), the official publication of the American Society for Quality. 3 Our approach is twofold. First, we demonstrate via a case study from industry how statistical significance differs from practical importance. ...

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Statistical Intervals, Not Statistical Significance

... As an illustration, below we show two examples from the core corpus following the scheme in 4 The corpus size of 15,000 was determined based on Cochran's Formula for sample size determination (Cochran, 1977), with a p-value and margin of error of 0.01. 5 The average cosine similarity across pairs of words in prime and target computed with word2vec embeddings by Fares et al. (2017) is 0.2 for both nouns and verbs. Figure 1, where P are the prime sentences and T the target: ...

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Structural Persistence in Language Models: Priming as a Window into Abstract Language Representations

... Taguchi's method of DoE determines the minimum number of experiments according to Taguchi arrays, within the permissible limits of the process parameters, which are adjusted to deliver an objective and complete analysis of their effects. For IM, the Taguchi method adjusts process parameters with a critical effect on process times and part quality [33], such as injection pressure, mould closing speed, mould pressure, backpressure, screw speed, barrel temperature, and melt temperature [34]. ...

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Generative design of conformal cooling channels for hybrid-manufactured injection moulding tools

... Median values with range and/or distribution-free confidence limits were used for all continuous variables. 18 Outcome measures were assessed for normality using graphical plots and formal tests such as Anderson-Darling for normality. Because normality assumptions were not upheld, the Wilcoxon signed rank test was used to compare continuous variables between different conditions. ...

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Optimizing Thrombin Generation with 4-Factor Prothrombin Complex Concentrates in Neonatal Plasma After Cardiopulmonary Bypass

... This parameter controls the uncertainty set in which the realizations of the random voltage and current magnitudes should be constrained. In an RV with normal PDF such as that in Fig. 1, approximately 68.2% of the realizations will deviate from their mean value by one standard deviation (i.e., α = 1.0), 95.4% by two standard deviations (i.e., α = 2.0), and so on [29]. ...

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Probabilistic OPF Model for Unbalanced Three-Phase Electrical Distribution Systems Considering Robust Constraints

... If a random variable is subordinate to the normal distribution [5], then its probability distribution function of the probability distribution function as shown in equation (6). ...

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Information pricing based on trusted system

... Given that the Poisson 95% confidence range for zero detections is [0,3.69] (Meeker et al. 2017), we can therefore set an upper limit of fewer than 3 × 10 3 to 3 × 10 4 TS members at 50 meter diameters, these numbers corresponding to the broad and narrow TS models respectively. If all the TS mass is at these sizes, then this corresponds to an equivalent progenitor body of only 50 m ×(N ) 1/3 = 700 − 1500 m diameter, far short of the 50-100 km size body proposed in the past (Clube & Napier 1984). ...

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A limit on the mass of the Taurid Resonant Swarm at sub-100 meter sizes