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Journal articles on the topic 'Geometric quantile'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Cheng, Yebin, and Jan G. De Gooijer. "On the uth geometric conditional quantile." Journal of Statistical Planning and Inference 137, no. 6 (2007): 1914–30. http://dx.doi.org/10.1016/j.jspi.2006.02.014.

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Shin, Ha-Young, and Hee-Seok Oh. "Geometric quantile-based measures of multivariate distributional characteristics." Statistics & Probability Letters 219 (April 2025): 110325. https://doi.org/10.1016/j.spl.2024.110325.

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Sathar, E. I. Abdul, and Veena L. Vijayan. "Quantile Based Geometric Vitality Function of Order Statistics." Mathematical Methods of Statistics 32, no. 1 (2023): 88–101. http://dx.doi.org/10.3103/s1066530723010040.

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Kim, Hyuk Joo. "A Study on Computing Sample Quantiles of Discrete Probability Distributions." Korean Data Analysis Society 26, no. 1 (2024): 175–86. http://dx.doi.org/10.37727/jkdas.2024.26.1.175.

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In this paper, we studied the methods of computing sample quantiles for the case of discrete probability distributions. There are two main methods which are introduced in statistics textbooks. We compared these two methods by simulation from practical and educational necessity. We considered some cases of Poisson, binomial, geometric, negative binomial, and discrete uniform distributions by setting up the parameters, and for each distribution we performed 10,000 times of simulation of drawing random samples of size 20 and 50. At each time of simulation, we computed the difference between the p

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Khare, Kshitij, and James P. Hobert. "Geometric ergodicity of the Gibbs sampler for Bayesian quantile regression." Journal of Multivariate Analysis 112 (November 2012): 108–16. http://dx.doi.org/10.1016/j.jmva.2012.05.004.

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6

Arshad, Rana Muhammad Imran, Christophe Chesneau, and Farrukh Jamal. "The Odd Gamma Weibull-Geometric Model: Theory and Applications." Mathematics 7, no. 5 (2019): 399. http://dx.doi.org/10.3390/math7050399.

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In this paper, we study a new four-parameter distribution called the odd gamma Weibull-geometric distribution. Having the qualities suggested by its name, the new distribution is a special member of the odd-gamma-G family of distributions, defined with the Weibull-geometric distribution as baseline, benefiting of their respective merits. Firstly, we present a comprehensive account of its mathematical properties, including shapes, asymptotes, quantile function, quantile density function, skewness, kurtosis, moments, moment generating function and stochastic ordering. Then, we focus our attentio

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Huang, Mei Ling, and Xiang Raney-Yan. "A Method for Confidence Intervals of High Quantiles." Entropy 23, no. 1 (2021): 70. http://dx.doi.org/10.3390/e23010070.

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The high quantile estimation of heavy tailed distributions has many important applications. There are theoretical difficulties in studying heavy tailed distributions since they often have infinite moments. There are also bias issues with the existing methods of confidence intervals (CIs) of high quantiles. This paper proposes a new estimator for high quantiles based on the geometric mean. The new estimator has good asymptotic properties as well as it provides a computational algorithm for estimating confidence intervals of high quantiles. The new estimator avoids difficulties, improves efficie

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Li, Shuang, and Jie Shan. "Adaptive Geometric Interval Classifier." ISPRS International Journal of Geo-Information 11, no. 8 (2022): 430. http://dx.doi.org/10.3390/ijgi11080430.

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Quantile, equal interval, and natural breaks methods are widely used data classification methods in geospatial analysis and cartography. However, when applied to data with skewed distributions, they can only reveal the variations of either high frequent values or extremes, which often leads to undesired and biased classification results. To handle this problem, Esri provided a compromise method, named geometric interval classification (GIC). Although GIC performs well for various classification tasks, its mathematics and solution process remain unclear. Moreover, GIC is theoretically only appl

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Peng, Bo, Zhengqiu Xu, and Min Wang. "The Exponentiated Lindley Geometric Distribution with Applications." Entropy 21, no. 5 (2019): 510. http://dx.doi.org/10.3390/e21050510.

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We introduce a new three-parameter lifetime distribution, the exponentiated Lindley geometric distribution, which exhibits increasing, decreasing, unimodal, and bathtub shaped hazard rates. We provide statistical properties of the new distribution, including shape of the probability density function, hazard rate function, quantile function, order statistics, moments, residual life function, mean deviations, Bonferroni and Lorenz curves, and entropies. We use maximum likelihood estimation of the unknown parameters, and an Expectation-Maximization algorithm is also developed to find the maximum

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Ramires, Thiago, Edwin Ortega, Gauss Cordeiro, and Gholamhoss Hamedani. "The beta generalized half-normal geometric distribution." Studia Scientiarum Mathematicarum Hungarica 50, no. 4 (2013): 523–54. http://dx.doi.org/10.1556/sscmath.50.2013.4.1258.

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The beta generalized half-normal distribution is commonly used to model lifetimes. We propose a new wider distribution called the beta generalized half-normal geometric distribution, whose failure rate function can be decreasing, increasing or upside-down bathtub. Its density function can be expressed as a linear combination of beta generalzed half-normal density functions. We derive quantile function, moments and generating unction. We characterize the proposed distribution using a simple relationship between wo truncated moments. The method of maximum likelihood is adapted to estimate the mo

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Ramadan, Ahmed T., Ahlam H. Tolba, and Beih S. El-Desouky. "A Unit Half-Logistic Geometric Distribution and Its Application in Insurance." Axioms 11, no. 12 (2022): 676. http://dx.doi.org/10.3390/axioms11120676.

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A new one parameter distribution recently was proposed for modelling lifetime data called half logistic-geometric (HLG) distribution. In this paper, appropriate transformation is considered for HLG distribution and a new distribution is derived called unit half logistic-geometric (UHLG) distribution for modelling bounded data in the interval (0, 1). Some important statistical properties are investigated with a closed form quantile function. Some methods of parameter estimation are introduced to evaluate the distribution parameter and a simulation study is introduced to compare these different

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12

Bottai, Matteo. "A regression method for modelling geometric rates." Statistical Methods in Medical Research 26, no. 6 (2015): 2700–2707. http://dx.doi.org/10.1177/0962280215606474.

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The occurrence of an event of interest over time is often summarized by the incidence rate, defined as the average number of events per person-time. This type of rate applies to events that may occur repeatedly over time on any given subject, such as infections, and Poisson regression represents a natural regression method for modelling the effect of covariates on it. However, for events that can occur only once, such as death, the geometric rate may be a better summary measure. The geometric rate has long been utilized in demography for studying the growth of populations and in finance to com

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13

HOBSON, DAVID, and JEREMY PENN. "MAXIMIZING THE PROBABILITY OF A PERFECT HEDGE USING AN IMPERFECTLY CORRELATED INSTRUMENT." International Journal of Theoretical and Applied Finance 08, no. 06 (2005): 763–89. http://dx.doi.org/10.1142/s0219024905003220.

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Let Xϕ denote the trading wealth generated using a strategy ϕ, and let CT be a contingent claim which is not spanned by the traded assets. Consider the problem of finding the strategy which maximizes the probability of terminal wealth meeting or exceeding the claim value at some fixed time horizon, i.e., of finding [Formula: see text]. This problem is sometimes referred to as the quantile hedging problem. We consider the quantile hedging problem when the traded asset and the contingent claim are correlated geometric Brownian motions. This fits with several important examples. One of the benefi

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Nasiru, Suleman, Christophe Chesneau, Abdul Ghaniyyu Abubakari, and Irene Dekomwine Angbing. "Generalized Unit Half-Logistic Geometric Distribution: Properties and Regression with Applications to Insurance." Analytics 2, no. 2 (2023): 438–62. http://dx.doi.org/10.3390/analytics2020025.

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The use of distributions to model and quantify risk is essential in risk assessment and management. In this study, the generalized unit half-logistic geometric (GUHLG) distribution is developed to model bounded insurance data on the unit interval. The corresponding probability density function plots indicate that the related distribution can handle data that exhibit left-skewed, right-skewed, symmetric, reversed-J, and bathtub shapes. The hazard rate function also suggests that the distribution can be applied to analyze data with bathtubs, N-shapes, and increasing failure rates. Subsequently,

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Prataviera, Fábio, Gauss M. Cordeiro, Edwin M. M. Ortega, and Adriano K. Suzuki. "The Odd Log-Logistic Geometric Normal Regression Model with Applications." Advances in Data Science and Adaptive Analysis 11, no. 01n02 (2019): 1950003. http://dx.doi.org/10.1142/s2424922x19500037.

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In several applications, the distribution of the data is frequently unimodal, asymmetric or bimodal. The regression models commonly used for applications to data with real support are the normal, skew normal, beta normal and gamma normal, among others. We define a new regression model based on the odd log-logistic geometric normal distribution for modeling asymmetric or bimodal data with support in [Formula: see text], which generalizes some known regression models including the widely known heteroscedastic linear regression. We adopt the maximum likelihood method for estimating the model para

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Louzada, Francisco, Cintia Y. Yamachi, Vitor A. A. Marchi, and Maria A. P. Franco. "The long-term exponentiated complementary exponential geometric distribution under a latent complementary causes framework." TEMA (São Carlos) 15, no. 1 (2014): 019. http://dx.doi.org/10.5540/tema.2014.015.01.0019.

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<p><span>A new lifetime distribution which accommodates decreasing and unimodal hazard function is proposed in this paper. It is derived from the exponentiated complementary exponential geometric distribution and has it genesis on the compounding the exponential and geometric distributions. It can be used on a latent complementary causes scenario, where onle thethe minimum lifetime among all causes is observed. We derive the density, quantile, survival and failure rate functions for the proposed distribution, as well as some proprieties such as the characteristic function, mean, va

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Magnussen, S., and P. Boudewyn. "Derivations of stand heights from airborne laser scanner data with canopy-based quantile estimators." Canadian Journal of Forest Research 28, no. 7 (1998): 1016–31. http://dx.doi.org/10.1139/x98-078.

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The distribution of canopy heights obtained with an airborne laser scanner over a field trial with Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) was a function of the vertical distribution of foliage area. Over a wide range of canopy structures, the proportion of laser pulses returned from or above a given reference height was proportional to the fraction of leaf area above it. We hypothesized that the quantile of the laser canopy heights matching in probability the fraction of leaf area above a desired height would be an unbiased estimator of same. This was confirmed in 36 (20 × 20 m) pl

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18

Warahena-Liyanage, Gayan, Felix Famoye, and Carl Lee. "A Generalization of LASSO Modeling via Bayesian Interpretation." Austrian Journal of Statistics 52, no. 4 (2023): 15–45. http://dx.doi.org/10.17713/ajs.v52i4.1455.

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The aim of this paper is to introduce a generalized LASSO regression model that is derived using a generalized Laplace (GL) distribution. Five different GL distributions are obtained through the T -R{Y } framework with quantile functions of standard uniform, Weibull, log-logistic, logistic, and extreme value distributions. The properties, including quantile function, mode, and Shannon entropy of these GL distributions are derived. A particular case of GL distributions called the beta-Laplace distribution is explored. Some additional components to the constraint in the ordinary LASSO regression

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Faraz, Humaira, Fahim Raees, and Mirza Mahmood Baig. "Capturing the role of rural consumers in sensitive price indicator through geometric consistency check on urban and rural market prices." Mehran University Research Journal of Engineering and Technology 42, no. 4 (2023): 01. http://dx.doi.org/10.22581/muet1982.2304.2567.

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This paper focuses on capturing price movement and price stability in rural and urban markets. Pakistan collects prices from both markets, but only for the computation of the Consumer Price Index (CPI), which is calculated on a monthly basis. It is proposed to include rural markets by widening the scope of the Sensitive Price Indicator (SPI), computed by the Pakistan Bureau of Statistics (PBS). The inconsistency in the prices of rural markets is observed on the basis of different measures, including descriptive and inferential statistics. Therefore, it is suggested to include rural markets as

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20

Angbing, Irene Dekomwine, Suleman Nasiru, and Dioggban Jakperik. "Sine-Weibull Geometric Mixture and Nonmixture Cure Rate Models with Applications to Lifetime Data." International Journal of Mathematics and Mathematical Sciences 2022 (August 8, 2022): 1–13. http://dx.doi.org/10.1155/2022/1798278.

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In this study, two new distributions are developed by compounding Sine-Weibull and zero-truncated geometric distributions. The quantile and ordinary moments of the distributions are obtained. Plots of the hazard rate functions of the distributions show that the distributions exhibit nonmonotonic failure rates. Also, plots of the densities of the distributions show that they exhibit decreasing, skewed, and approximately symmetric shapes, among others. Mixture and nonmixture cure rate models based on these distributions are also developed. The estimators of the parameters of the cure rate models

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Farooq, Muhammad, Muhammad Mohsin, Muhammad Naeem, Muhammad Farman, Ali Akgul, and Muhammad Saleem. "Discretization of the method of generating an expanded family of distributions based upon truncated distributions." Thermal Science 25, Spec. issue 1 (2021): 19–30. http://dx.doi.org/10.2298/tsci200605003f.

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Discretization translates the continuous functions into discrete version making them more adaptable for numerical computation and application in applied mathematics and computer sciences. In this article, discrete analogues of a generalization method of generating a new family of distributions is provided. Several new discrete distributions are derived using the proposed methodology. A discrete Weibull-Geometric distribution is considered and various of its significant characteristics including moment, survival function, reliability function, quantile function, and order statistics are discuss

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22

Elem-Uche, O., E. W. Okereke, and C. O. Omekara. "Marshall-Olkin Power Hazard Rate Distribution with Associated Minification Process and Application." International Journal of Research and Scientific Innovation XII, no. I (2025): 314–36. https://doi.org/10.51244/ijrsi.2025.12010027.

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In this paper, a new three-parameter lifetime distribution of Marshall-Olkin family of distributions with the baseline model as power hazard rate distribution called the Marshall-Olkin Power Hazard rate distribution is introduced and its various structural properties are discussed. We examined different statistical properties like hazard rate function, quantile function, raw moment, incomplete moment and related measures, mean deviation, Bonferroni and Lorenz curve, order statistics, Renyi’s entropy, stress-strength reliability, stochastic ordering, and compounding and geometric extreme stabil

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23

Tak, Gyeongmi, Chongkyu Lee, Seonghun Jeong, Sanghyun Lee, Byungjun Ko, and Hyun Kim. "Analysis of Suitable Cultivation Sites for Gastrodia elata Using GIS: A Comparison of Various Classification Methods." Applied Sciences 15, no. 3 (2025): 1511. https://doi.org/10.3390/app15031511.

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Gastrodia elata has been a valuable medicinal resource in the East for approximately 3000 years. In South Korea, G. elata is cultivated in open-fields or greenhouses near residential areas. However, due to severe continuous damage, cultivation sites need to be frequently relocated, leading to a shortage of available cultivation areas. Alternatively, farmers are focusing on mountain cultivation. This study analyzed suitable cultivation sites for G. elata in mountainous areas using a geographic information system (GIS) and applied various classification methods to identify their characteristics

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Andrews-Trevino, Johanna Y., Patrick Webb, Gerald Shively, et al. "Dietary determinants of aflatoxin B1-lysine adduct in pregnant women consuming a rice-dominated diet in Nepal." European Journal of Clinical Nutrition 74, no. 5 (2020): 732–40. http://dx.doi.org/10.1038/s41430-019-0554-2.

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Abstract Background Aflatoxins are found in diverse foods widely consumed worldwide. This study investigated the association between aflatoxin exposure and (a) consumption of specific foods, (b) dietary diversity (DD), and (c) seasonality. Methods Women enrolled in the AflaCohort Study in Banke, Nepal (n = 1648) were asked how often they ate certain food items in the past 7 days and 24 h. Serum aflatoxin B1-lysine (AFB1-lys) adduct levels, measured during pregnancy, were determined using high-performance liquid chromatography. Multivariable ordinary least squares and quantile regression models

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Kim, Wonkook, Sunghun Jung, Yongseon Moon, and Stephen C. Mangum. "Morphological Band Registration of Multispectral Cameras for Water Quality Analysis with Unmanned Aerial Vehicle." Remote Sensing 12, no. 12 (2020): 2024. http://dx.doi.org/10.3390/rs12122024.

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Multispectral imagery contains abundant spectral information on terrestrial and oceanic targets, and retrieval of the geophysical variables of the targets is possible when the radiometric integrity of the data is secured. Multispectral cameras typically require the registration of individual band images because their lens locations for individual bands are often displaced from each other, thereby generating images of different viewing angles. Although this type of displacement can be corrected through a geometric transformation of the image coordinates, a mismatch or misregistration between th

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Zhao, Bin, Supeng Wu, and Kaiyun Wang. "Quantale algebras as lattice-valued quantales." Soft Computing 21, no. 10 (2016): 2561–74. http://dx.doi.org/10.1007/s00500-016-2147-5.

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Vargas-Herrera, Natalia, Manuel Fernández-Navarro, Nestor E. Cabezudo, et al. "Immunogenicity and reactogenicity of a third dose of BNT162b2 vaccine for COVID-19 after a primary regimen with BBIBP-CorV or BNT162b2 vaccines in Lima, Peru." PLOS ONE 17, no. 10 (2022): e0268419. http://dx.doi.org/10.1371/journal.pone.0268419.

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Background The administration of a third (booster) dose of COVID-19 vaccines in Peru initially employed the BNT162b2 (Pfizer) mRNA vaccine. The national vaccination program started with healthcare workers (HCW) who received BBIBP-CorV (Sinopharm) vaccine as primary regimen and elderly people previously immunized with BNT162b2. This study evaluated the reactogenicity and immunogenicity of the “booster” dose in these two groups in Lima, Peru. Methods We conducted a prospective cohort study, recruiting participants from November to December of 2021 in Lima, Peru. We evaluated immunogenicity and r

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Mazorra-Aguiar, Luis, Philippe Lauret, Mathieu David, Albert Oliver, and Gustavo Montero. "Comparison of Two Solar Probabilistic Forecasting Methodologies for Microgrids Energy Efficiency." Energies 14, no. 6 (2021): 1679. http://dx.doi.org/10.3390/en14061679.

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In this paper, the performances of two approaches for solar probabilistic are evaluated using a set of metrics previously tested by the meteorology verification community. A particular focus is put on several scores and the decomposition of a specific probabilistic metric: the continuous rank probability score (CRPS) as they give extensive information to compare the forecasting performance of both methodologies. The two solar probabilistic forecasting methodologies are used to produce intra-day solar forecasts with time horizons ranging from 1 h to 6 h. The first methodology is based on two st

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Vojtek, Matej, Jana Vojteková, and Quoc Bao Pham. "GIS-Based Spatial and Multi-Criteria Assessment of Riverine Flood Potential: A Case Study of the Nitra River Basin, Slovakia." ISPRS International Journal of Geo-Information 10, no. 9 (2021): 578. http://dx.doi.org/10.3390/ijgi10090578.

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The aim of this study was to identify the areas with different levels of riverine flood potential (RFP) in the Nitra river basin, Slovakia, using multi-criteria evaluation (MCE)-analytical hierarchical process (AHP), geographic information systems (GIS), and seven flood conditioning factors. The RFP in the Nitra river basin had not yet been assessed through MCE-AHP. Therefore, the methodology used can be useful, especially in terms of the preliminary flood risk assessment required by the EU Floods Directive. The results showed that classification techniques of natural breaks (Jenks), equal int

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Lu, Wei, Zhuo Sun, Zhengyuan Wang, et al. "The Joint Effects of Bisphenols and Iodine Exposure on Thyroid during Pregnancy." Nutrients 15, no. 15 (2023): 3422. http://dx.doi.org/10.3390/nu15153422.

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The aim of this research was to study the combined effects of bisphenols and iodine exposure on the thyroid gland during pregnancy. We included 162 pregnant women from a cohort established in Shanghai. Urinary concentrations of bisphenol A, bisphenol B(BPB), bisphenol C(BPC), bisphenol F, bisphenol S, and bisphenol AF(BPAF) were examined. Bayesian kernel machine regression (BKMR) and quantile g-computation models were used. The geometric means of BPA, BPB, BPC, BPF, BPS, BPAF, and ΣBPs levels in urine were 3.03, 0.24, 2.66, 0.36, 0.26, 0.72, and 7.55 μg/g creatinine, respectively. We observed

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Zayed, Mohammad A., Amal S. Hassan, Ehab M. Almetwally, Ahmad M. Aboalkhair, Abdullah H. Al-Nefaie, and Hisham M. Almongy. "A Compound Class of Unit Burr XII Model: Theory, Estimation, Fuzzy, and Application." Scientific Programming 2023 (April 26, 2023): 1–17. http://dx.doi.org/10.1155/2023/4509889.

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The current research offers an enhanced three-parameter lifetime model that combines the unit Burr XII distribution with a power series distribution. The novel class of distribution is named the unit Burr XII power series (UBXIIPS). This compounding technique allows for the production of flexible distributions with strong physical meanings in domains such as biology and engineering. The UBXIIPS class includes the unit Burr XII Poisson (UBXIIP) distribution, the unit Burr XII binomial distribution, the unit Burr XII geometric distribution, and the unit Burr XII negative binomial distribution. T

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Wang, Haoyue, Yuehua Lu, Ke Yu, et al. "Comparative Study on the Vertical Column Concentration Inversion Algorithm of Tropospheric Trace Gas Based on the MAX-DOAS Measurement Spectrum." Remote Sensing 16, no. 18 (2024): 3359. http://dx.doi.org/10.3390/rs16183359.

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The tropospheric vertical column concentration (VCDtrop) of NO2, SO2, and HCHO was retrieved, respectively, by employing the geometric method (Geomtry), simplified model method (Model), and look-up table method (Table) with the observation spectra of the multi-axis differential absorption spectroscopy instrument (MAX-DOAS). The correlation and relative differences of the inversion results obtained by these three algorithms, as well as the changes in quantiles, were explored. The comparative analysis reveals that the more concentrated the vertical distribution height of gas components is in the

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VASILCA, Doina. "How to Create an Effective Thematic Map." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 76, no. 2 (2019): 258. http://dx.doi.org/10.15835/buasvmcn-hort:2019.0035.

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Considering the evolution of automatic mapping programs and the huge amount of available data, the key elements that go into creating thematic maps are presented so that those less familiar with map-making might be able to craft accurate, reliable and illustrative maps.Here, we used ArcGIS Pro in order to exemplify the process of creating thematic maps presenting correlations between the number of emergency/total 112 calls and the population of Romanian counties. These freely-available data were classified using Natural Brakes, Quantile, Equal Interval, Geometric Interval, Standard Deviation,

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Astakhova, Tatiyana, Nataliya Verzun, Viktor Kasatkin, Mikhail Kolbanev, and Aleksey Shamin. "Sensor network connectivity models." Information and Control Systems, no. 5 (October 17, 2019): 38–50. http://dx.doi.org/10.31799/1684-8853-2019-5-38-50.

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Introduction: One of the key areas in the research of wireless sensor networks is studying the ways to increase the battery lifeby saving energy in individual devices. The article introduces and discusses a new energy-efficient stochastic measure of the qualityparameter for a wireless sensor network – connectivity, which reflects the ability of a network to establish connections betweenits elements within the boundaries of the sensor field in real time, at a certain level of the sensor device battery charge. Purpose:Identifying the interdependence between the probability-time and probability-e

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Koechlin, Luca, Urs Zenklusen, Thomas Doebele, et al. "Analysis of Myocardial Ischemia Parameters after Coronary Artery Bypass Grafting with Minimal Extracorporeal Circulation and a Novel Microplegia versus Off-Pump Coronary Artery Bypass Grafting." Mediators of Inflammation 2020 (January 25, 2020): 1–8. http://dx.doi.org/10.1155/2020/5141503.

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Background. To compare the performance of our institutionally refined microplegia protocol in conjunction with minimal extracorporeal circulation system (MiECC) with off-pump coronary artery bypass grafting (OPCAB). Methods. We conducted a single center study including patients undergoing isolated CABG surgery performed either off-pump or on-pump using our refined microplegia protocol in conjunction with MiECC. We used propensity modelling to calculate the inverse probability of treatment weights (IPTW). Primary endpoints were peak values of high-sensitivity cardiac troponin T (hs-cTnT) during

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Balabushkin, Aleksander. "Approximation to portfolio liquidation value with calculation of its skewness." Economics and the Mathematical Methods 59, no. 1 (2023): 105. http://dx.doi.org/10.31857/s042473880024878-4.

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A boundary problem for a homogeneous multidimensional diffusion process is considered under the assumption of small perturbations. Approximations to the mean, second and third central moments of the process at the moment of the first crossing a given plane in phase space are presented as a solution of ordinary differential equations with an additional transformation (“projection onto the boundary”). The quantile of a linear combination of coordinates is estimated by the second order expansion in powers of a small parameter determining the magnitude of perturbations. In the first approximation,

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Effen, Christian, Benedikt Riegel, Nicklas Gerhard, et al. "Manufacturing Considerations in the Aerodynamic Design Process of Turbomachinery Components." Processes 13, no. 8 (2025): 2363. https://doi.org/10.3390/pr13082363.

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This paper presents a CFD-based method for the aerodynamic design of a high-pressure compressor rotor blisk, taking into account manufacturing constraints. Focus is placed on the influence of geometric deviations caused by the dynamic constraints of the milling machine. Special attention is given to the leading edge region of the blade, where high curvature results in increased sensitivity in both aerodynamic behavior and manufacturability. The generic blisk geometry on which this study is based is characterized by an elliptical leading edge. For the optimization, the leading edge is described

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Ristl, Robin, Johannes Klopf, Andreas Scheuba, et al. "Growth prediction model for abdominal aortic aneurysms." British Journal of Surgery 109, no. 2 (2021): 211–19. http://dx.doi.org/10.1093/bjs/znab407.

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Abstract Background The most relevant determinant in scheduling monitoring intervals for abdominal aortic aneurysms (AAAs) is maximum diameter. The aim of the study was to develop a statistical model that takes into account specific characteristics of AAA growth distributions such as between-patient variability as well as within-patient variability across time, and allows probabilistic statements to be made regarding expected AAA growth. Methods CT angiography (CTA) data from patients monitored at 6-month intervals with maximum AAA diameters at baseline between 30 and 66 mm were used to develo

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Chen, Wei, Zhao Wang, Guirong Wang, et al. "Optimizing Rotation Forest-Based Decision Tree Algorithms for Groundwater Potential Mapping." Water 15, no. 12 (2023): 2287. http://dx.doi.org/10.3390/w15122287.

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Groundwater potential mapping is an important prerequisite for evaluating the exploitation, utilization, and recharge of groundwater. The study uses BFT (best-first decision tree classifier), CART (classification and regression tree), FT (functional trees), EBF (evidential belief function) benchmark models, and RF-BFTree, RF-CART, and RF-FT ensemble models to map the groundwater potential of Wuqi County, China. Firstly, select sixteen groundwater spring-related variables, such as altitude, plan curvature, profile curvature, curvature, slope angle, slope aspect, stream power index, topographic

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Chaudhuri, Probal. "On a Geometric Notion of Quantiles for Multivariate Data." Journal of the American Statistical Association 91, no. 434 (1996): 862–72. http://dx.doi.org/10.1080/01621459.1996.10476954.

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Girard, Stéphane, and Gilles Stupfler. "Extreme geometric quantiles in a multivariate regular variation framework." Extremes 18, no. 4 (2015): 629–63. http://dx.doi.org/10.1007/s10687-015-0226-0.

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'Afifah, Z. N. "EFFECTIVENESS OF CLASSIFICATION METHOD AND COLOR SYMBOL SCHEME ON CHOROPLETH MAP OF POPULATION DENSITY IN SPECIAL REGION OF YOGYAKARTA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W16 (October 1, 2019): 55–61. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w16-55-2019.

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Abstract. The need for presenting information in maps is increasingly high in various scientific fields. All scientific fields need to present effective data for decision making. Good decision making based on maps requires good understanding but not all scientific fields are familiar with using maps. Supporting factors for easy maps to understand are classification method and color symbol scheme. The purpose of this study was to select and test the classification method and the most effective color symbol scheme for mapping population density in the Special Region of Yogyakarta. The classifica

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Ahmadi, Shukrullah, Barbara Le Bot, Roméo Zoumenou, et al. "Follow-Up of Elevated Blood Lead Levels and Sources in a Cohort of Children in Benin." International Journal of Environmental Research and Public Health 17, no. 22 (2020): 8689. http://dx.doi.org/10.3390/ijerph17228689.

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Lead exposure is associated with poor cognitive development in children. Very few studies in sub-Saharan Africa (SSA) have studied blood lead levels (BLLs) and non-gasoline sources of exposure in children. Data from a birth cohort in Benin (2011–2013) suggested that 58% of 1-year-old children had BLLs > 50 ug/L. We aimed to investigate the prevalence of elevated BLLs (>50 µg/L and >100 µg /L) among 425 of these children at 6 years of age in 2016–2018 and to compare BLLs between age 1 and 6 years, and study sources of lead at age 6 years. BLLs were analysed by inductively coupled plasm

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Keevil, Brian G., Soazig Clifton, Clare Tanton, et al. "Distribution of Salivary Testosterone in Men and Women in a British General Population-Based Sample: The Third National Survey of Sexual Attitudes and Lifestyles (Natsal-3)." Journal of the Endocrine Society 1, no. 1 (2017): 14–25. http://dx.doi.org/10.1210/js.2016-1029.

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Abstract Introduction: Measurement of salivary testosterone (Sal-T) to assess androgen status offers important potential advantages in epidemiological research. The utility of the method depends on the interpretation of the results against robustly determined population distributions, which are currently lacking. Aim: To determine age-specific Sal-T population distributions for men and women. Methods: Morning saliva samples were obtained from participants in the third National Survey of Sexual Attitudes and Lifestyles, a probability sample survey of the British general population. Sal-T was me

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ADESSO, GERARDO, and DAVIDE GIROLAMI. "GAUSSIAN GEOMETRIC DISCORD." International Journal of Quantum Information 09, no. 07n08 (2011): 1773–86. http://dx.doi.org/10.1142/s0219749911008192.

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We extend the geometric measure of quantum discord, introduced and computed for two-qubit states, to quantify non-classical correlations in composite Gaussian states of continuous variable systems. We lay the formalism for the evaluation of a Gaussian geometric discord in two-mode Gaussian states, and present explicit formulas for the class of two-mode squeezed thermal states. In such a case, under physical constraints of bounded mean energy, geometric discord is shown to admit upper and lower bounds for a fixed value of the conventional (entropic) quantum discord. We finally discuss alternati

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Sun, Edward W., Yu-Jen Wang, and Min-Teh Yu. "Integrated Portfolio Risk Measure: Estimation and Asymptotics of Multivariate Geometric Quantiles." Computational Economics 52, no. 2 (2017): 627–52. http://dx.doi.org/10.1007/s10614-017-9708-2.

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Chaouch, Mohamed, and Camelia Goga. "Design-based estimation for geometric quantiles with application to outlier detection." Computational Statistics & Data Analysis 54, no. 10 (2010): 2214–29. http://dx.doi.org/10.1016/j.csda.2010.03.006.

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Yamaka, Woraphon, Jianxu Liu, Mingyang Li, Paravee Maneejuk, and Hai Q. Dinh. "Analyzing the Causality and Dependence between Exchange Rate and Real Estate Prices in Boom-and-Bust Markets: Quantile Causality and DCC Copula GARCH Approaches." Axioms 11, no. 3 (2022): 113. http://dx.doi.org/10.3390/axioms11030113.

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Unlike most previous studies examining the causal relationship and dependence between exchange rates and real estate prices, this study aims to investigate the causal relationship and dependence between these two variables in a boom-and-bust market setting using the panel quantile Granger causality and dynamic conditional correlation (DCC) copula GARCH approaches, respectively. In the panel quantile Granger causality test, quantiles 0.1 and 0.9 are considered to represent extreme markets (bust and boom, respectively). Our first results showed the causal effects at extreme quantiles to be very

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Hofmann, Dirk, and Paweł Waszkiewicz. "Approximation in quantale-enriched categories." Topology and its Applications 158, no. 8 (2011): 963–77. http://dx.doi.org/10.1016/j.topol.2011.02.003.

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Boyer, D. M., Y. Lipman, E. St. Clair, et al. "Algorithms to automatically quantify the geometric similarity of anatomical surfaces." Proceedings of the National Academy of Sciences 108, no. 45 (2011): 18221–26. http://dx.doi.org/10.1073/pnas.1112822108.

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