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Journal articles on the topic '4-parameter lognormal distribution'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

FLYNN, MICHAEL R. "On the Moments of the 4-Parameter Lognormal Distribution." Communications in Statistics - Theory and Methods 34, no. 4 (2005): 745–51. http://dx.doi.org/10.1081/sta-200054397.

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Jinxin, Deng, Chen Lin, Lu Sitong, Hou Yuxin, Huang Wenjun, and Cheng Xiaoquan. "Damage distribution of composite structures of a certain type of aircraft." Scientific Insights and Discoveries Review 6 (October 14, 2024): 294–309. http://dx.doi.org/10.59782/sidr.v6i1.215.

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Aiming at the damage and repair of aircraft composite structures, the applications and damage of composite structures in a certain type of aircraft, including the wing, fuselage and other components, were counted. Solid laminates (integral panels) and sandwich laminates are typical composite structural forms in the aircraft. Structural damage distribution models with time variable were established, and then the damage distributions of the structures were fitted and tested by structural methods. The results show that the quantitative proportions of damage are 75% for skin delamination, 20% for

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Avakov, V. A., and R. G. Shomperlen. "Fatigue Reliability Functions." Journal of Vibration and Acoustics 111, no. 4 (1989): 443–55. http://dx.doi.org/10.1115/1.3269881.

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There are many fatigue test and statistical procedures to establish the life distribution function Q = Q(N) at constant stress (S) level. But the stress distribution function, Q = Q(S), at specified life (N) is more important to the designer, and it remains less developed. Generally, if the fatigue life distribution Q(N) and fatigue curve S(N) equations are defined, the fatigue strength distribution Q(S) is implied. However, it has been shown [4, 6, 7, 9] that any life distribution model Q(N) may be transformed into the complicated strength distribution function Q(S). In this study orthogonal

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Omar, M. Hafidz, Sheikh Y. Arafat, M. Pear Hossain, and Muhammad Riaz. "Inverse Maxwell Distribution and Statistical Process Control: An Efficient Approach for Monitoring Positively Skewed Process." Symmetry 13, no. 2 (2021): 189. http://dx.doi.org/10.3390/sym13020189.

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(1) Background: The literature discusses the inverse Maxwell distribution theoretically without application. Control charting is promising, but needs development for inverse Maxwell processes. (2) Methods: Thus, we develop the VIM control chart for monitoring the inverse Maxwell scale parameter and studied its statistical properties. The chart’s performance is evaluated using power curves and run length properties. (3) Results: Further, we use simulated data to compare the shift detection capability of our chart with Weibull, gamma, and lognormal charts. (4) Conclusion: The analysis demonstrat

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Sommer, Martin W., Tim Schrabback, Douglas E. Applegate, et al. "Weak lensing mass modeling bias and the impact of miscentring." Monthly Notices of the Royal Astronomical Society 509, no. 1 (2021): 1127–46. http://dx.doi.org/10.1093/mnras/stab3052.

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ABSTRACT Parametric modeling of galaxy cluster density profiles from weak lensing observations leads to a mass bias, whose detailed understanding is critical in deriving accurate mass-observable relations for constraining cosmological models. Drawing from existing methods, we develop a robust framework for calculating this mass bias in one-parameter fits to simulations of dark matter haloes. We show that our approach has the advantage of being independent of the absolute noise level, so that only the number of haloes in a given simulation and the representativeness of the simulated haloes for

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Maccone, Claudio. "SETI, Evolution and Human History Merged into a Mathematical Model." International Journal of Astrobiology 12, no. 3 (2013): 218–45. http://dx.doi.org/10.1017/s1473550413000086.

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AbstractIn this paper we propose a new mathematical model capable of merging Darwinian Evolution, Human History and SETI into a single mathematical scheme:(1) Darwinian Evolution over the last 3.5 billion years is defined as one particular realization of a certain stochastic process called Geometric Brownian Motion (GBM). This GBM yields the fluctuations in time of the number of species living on Earth. Its mean value curve is an increasing exponential curve, i.e. the exponential growth of Evolution.(2) In 2008 this author provided the statistical generalization of the Drake equation yielding

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Chen, Wenjun. "Tree Size Distribution Functions of Four Boreal Forest Types for Biomass Mapping." Forest Science 50, no. 4 (2004): 436–49. http://dx.doi.org/10.1093/forestscience/50.4.436.

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Abstract To accurately map forest biomass, which is essential for many socioeconomic and environmental studies, reliable information of tree size distribution within a stand is needed. Using measurements at 87 stands of trembling aspen (Populous tremuloides Michx.), jack pine (Pinus banksiana Lamb.), black spruce (Picea mariana [Mill.] BSP.), and mixed forests along a 1,000-km boreal forest transect in western Canada, we investigated three methods for estimating tree size distribution: parameter prediction method for diameter-frequency distribution (PPM-Nk/N), PPM for diameter-basal area distr

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Ohdoko, Taro, and Satoru Komatsu. "Integrating a Pareto-Distributed Scale into the Mixed Logit Model: A Mathematical Concept." Mathematics 11, no. 23 (2023): 4727. http://dx.doi.org/10.3390/math11234727.

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A generalized multinomial logit (G-MNL) model is proposed to alleviate the four challenges inherent to the conditional logit model, including (1) simultaneous unidentifiability, (2) the immediacy of decision-making, (3) the homogeneity of preferences in unobservable variables, and (4) the independence of irrelevant alternatives. However, the G-MNL model has some restrictions that are caused by the assumed logit scale of the lognormal distribution used in the G-MNL model. We propose a mixed logit with integrated Pareto-distributed scale (MIXL-iPS) model to address the restriction of the G-MNL m

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Oudard, S., F. Joulain, A. De Geer, and A. O. Sartor. "Cabazitaxel or mitoxantrone with prednisone in patients with metastatic castration-resistant prostate cancer (mCRPC) previously treated with docetaxel: Estimating mean overall survival (OS) for health economic analyses from a phase III trial (TROPIC)." Journal of Clinical Oncology 29, no. 7_suppl (2011): 128. http://dx.doi.org/10.1200/jco.2011.29.7_suppl.128.

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128^ Background: TROPIC evaluated the efficacy and safety of the novel taxane cabazitaxel in men with mCRPC previously treated with docetaxel. Median OS was significantly improved, as previously reported (12.7 months in mitoxantrone arm vs 15.1 months in cabazitaxel arm, HR=0.72 [0.61 – 0.84], p<0.0001- updated OS results). Median OS is the most useful descriptive statistic for physicians and patients as it reflects a point estimate in time by which 50% patients may survive regardless of disease status or progression. It avoids assumptions on long-term survival beyond the follow-up period o

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Mage, David, E. Donner, Mechtild Vennemann, et al. "All sudden unexplained infant respiratory deaths may result from the same underlying mechanism." Scandinavian Journal of Forensic Science 18, no. 1 (2012): 1–9. http://dx.doi.org/10.2478/v10278-012-0001-6.

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All sudden unexplained infant respiratory deaths may result from the same underlying mechanism The Sudden Infant Death Syndrome (SIDS) was defined in 1969 by Beckwith as sudden death of an infant or young child, unexpected by medical history, remaining unexplained after thorough autopsy/death-scene investigation. Recently researchers have used the general terms Sudden Unexplained Death in Infancy (SUDI) and Sudden Unexpected Infant Death (SUID) as "umbrella-terms" covering unexplained deaths (SIDS); sudden deaths for which SIDS risk factors present but insufficient cause is found; and sudden d

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Mage, David T., Maria L. Latorre, Alejandro G. Jenik, and E. Maria Donner. "The Role of Respiratory Infection in Sudden Infant Death Syndrome (SIDS)." Scandinavian Journal of Forensic Science 22, no. 1 (2016): 15–20. http://dx.doi.org/10.1515/sjfs-2016-0004.

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Abstract Introduction: The Sudden Infant Death Syndrome (SIDS) is not likely to be explained by a currently measureable presence in all cases and absence in controls, as otherwise it would have been solved already. Indeed, any proposed physiological model for SIDS causation must explain the constant mathematical and statistical properties of SIDS age and gender. We have shown previously that SIDS are characterized by a common 4-parameter lognormal age distribution sparing neonatal infants, by a nominal 50% male excess, and by a higher rate in winter than summer. We test now whether SIDS is clo

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Vargas, Eugenia Azevedo, Thomas B. Whitaker, Eliene Alves dos Santos, Andrew B. Slate, Francisco B. Lima, and Regina C. A. Franca. "Testing Green Coffee for Ochratoxin A, Part II: Observed Distribution of Ochratoxin A Test Results." Journal of AOAC INTERNATIONAL 88, no. 3 (2005): 780–87. http://dx.doi.org/10.1093/jaoac/88.3.780.

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Abstract The suitability of 4 theoretical distributions (normal, lognormal, negative binomial, and gamma) to predict the observed distribution of ochratoxin A (OTA) in green coffee was investigated. One symmetrical and 3 positively skewed theoretical distributions were each fitted to 25 empirical distributions of OTA test results for green coffee beans. Parameters of each theoretical distribution were calculated by using Methods of Moments. The 3 skewed theoretical distributions provided acceptable fits to each of the 25 observed distributions. Because of its simplicity, the lognormal distribu

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Shen, Yicheng, Aki Virkkula, Aijun Ding, et al. "Estimating cloud condensation nuclei number concentrations using aerosol optical properties: role of particle number size distribution and parameterization." Atmospheric Chemistry and Physics 19, no. 24 (2019): 15483–502. http://dx.doi.org/10.5194/acp-19-15483-2019.

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Abstract. The concentration of cloud condensation nuclei (CCN) is an essential parameter affecting aerosol–cloud interactions within warm clouds. Long-term CCN number concentration (NCCN) data are scarce; there are a lot more data on aerosol optical properties (AOPs). It is therefore valuable to derive parameterizations for estimating NCCN from AOP measurements. Such parameterizations have already been made, and in the present work a new parameterization is presented. The relationships between NCCN, AOPs, and size distributions were investigated based on in situ measurement data from six stati

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Kaszkur, Zbigniew, Bogusław Mierzwa, and Jerzy Pielaszek. "Ab initiotest of the Warren–Averbach analysis on model palladium nanocrystals." Journal of Applied Crystallography 38, no. 2 (2005): 266–73. http://dx.doi.org/10.1107/s0021889804033291.

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Model powder diffraction patterns were calculatedviathe Debye formula from atom positions of a range of energy-relaxed closed-shell cubooctahedral clusters. The energy relaxation employed the Sutton–Chen potential scheme with parameters for palladium. The assumed cluster size distribution followed lognormal distribution of a crystallite volume centred with the diameter of 5 nm, as well as two bimodal lognormal distributions centred around 4 nm and 7 nm. These models allowed an in-depth analysis of the Warren–Averbach method of separating strain and size effects in a peak shape Fourier analysis

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15

Jakeš, Jaromír. "A simple method of estimation of the polydispersity index of narrow molecular weight distributions by using quasielastic light scattering data." Collection of Czechoslovak Chemical Communications 56, no. 8 (1991): 1642–52. http://dx.doi.org/10.1135/cccc19911642.

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A simple method of estimation of the polydispersity index of narrow molecular weight distributions using quasielastic light scattering data has been suggested. The method approximates the relaxation times distribution by using the Pearson V distribution and iterates its parameters by the least squares method to an experimental correlation function. For the usual unimodal molecular weight distributions the polydispersity index estimate is good (with an error up to 0.1) at a determined value up to 1.2, rough at a determined value up to 1.5, while above this value the method is virtually impracti

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16

RAKOV, Vladimir A., and Evgeny A. MAREEV. "Statistical Distributions of Lightning Parameters with Emphasis on their Extremely High Values." Elektrichestvo 3, no. 3 (2021): 4–25. http://dx.doi.org/10.24160/0013-5380-2021-3-4-25.

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The paper is devoted to the review of the data on the lightning parameters necessary for development and perfection of lightning protection systems. It is shown, that down to present time national and international lightning protection standards are based on the Berger’s data on distribution of lightning amplitudes currents. Experimental data on amplitude of the return-stroke current the received recently in Brazil, Japan, USA (Florida) and Austria are resulted. It is emphasized, that the given data on currents of a lightning are characterized by a wide scatter that specifies necessity of real

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17

Otto, S., M. de Reus, T. Trautmann, A. Thomas, M. Wendisch, and S. Borrmann. "Atmospheric radiative effects of an in-situ measured Saharan dust plume and the role of large particles." Atmospheric Chemistry and Physics Discussions 7, no. 3 (2007): 7767–817. http://dx.doi.org/10.5194/acpd-7-7767-2007.

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Abstract. This work will present aerosol size distributions measured in a Saharan dust plume between 0.9 and 12 km altitude during the ACE-2 campaign 1997. The distributions contain a significant fraction of large particles of diameters from 4 to 30 μm. Radiative transfer calculations have been performed using these data as input. Shortwave, longwave as well as total atmospheric radiative effects (AREs) of the dust plume are investigated over ocean and desert within the scope of sensitivity studies considering varied input parameters like solar zenith angle, scaled total dust optical depth, tr

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18

Otto, S., M. de Reus, T. Trautmann, A. Thomas, M. Wendisch, and S. Borrmann. "Atmospheric radiative effects of an in situ measured Saharan dust plume and the role of large particles." Atmospheric Chemistry and Physics 7, no. 18 (2007): 4887–903. http://dx.doi.org/10.5194/acp-7-4887-2007.

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Abstract. This work will present aerosol size distributions measured in a Saharan dust plume between 0.9 and 12 km altitude during the ACE-2 campaign 1997. The distributions contain a significant fraction of large particles of diameters from 4 to 30 μm. Radiative transfer calculations have been performed using these data as input. Shortwave, longwave as well as total atmospheric radiative effects (AREs) of the dust plume are investigated over ocean and desert within the scope of sensitivity studies considering varied input parameters like solar zenith angle, scaled total dust optical depth, tr

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19

Rhoades, D. A., R. J. Van Dissen, R. M. Langridge, et al. "Re-evaluation of conditional probability of rupture of the Wellington-Hutt Valley segment of the Wellington Fault." Bulletin of the New Zealand Society for Earthquake Engineering 44, no. 2 (2011): 77–86. http://dx.doi.org/10.5459/bnzsee.44.2.77-86.

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New information on the activity of the Wellington-Hutt Valley segment of the Wellington Fault, New Zealand, has become available from geological and modelling studies undertaken in the last several years as part of the “It’s Our Fault” project. There are now revised estimates of: 1) the timing of the most recent rupture, and the previous four older ruptures; 2) the size of single-event displacements; 3) the Holocene dextral slip rate; and 4) rupture statistics of the Wellington-Wairarapa fault-pair, as deduced from synthetic seismicity modelling. The conditional probability of rupture of this

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20

Adamu, Jamilu Auwalu. "Advanced Stochastic Optimization Algorithm for Deep Learning Artificial Neural Networks in Banking and Finance Industries." Risk and Financial Management 1, no. 1 (2019): p8. http://dx.doi.org/10.30560/rfm.v1n1p8.

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One of the objectives of this paper is to incorporate fat-tail effects into, for instance, Sigmoid in order to introduce Transparency and Stability into the existing stochastic Activation Functions. Secondly, according to the available literature reviewed, the existing set of Activation Functions were introduced into the Deep learning Artificial Neural Network through the “Window” not properly through the “Legitimate Door” since they are “Trial and Error “and “Arbitrary Assumptions”, thus, the Author proposed a “Scientific Facts”, “Definite Rules: Jameel’s Stochastic ANNAF Criterion”, and a “L

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Malin, Peter E., Peter C. Leary, Lawrence M. Cathles, and Christopher C. Barton. "Observational and Critical State Physics Descriptions of Long-Range Flow Structures." Geosciences 10, no. 2 (2020): 50. http://dx.doi.org/10.3390/geosciences10020050.

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Using Fracture Seismic methods to map fluid-conducting fracture zones makes it important to understand fracture connectivity over distances greater 10–20 m in the Earth’s upper crust. The principles required for this understanding are developed here from the observations that (1) the spatial variations in crustal porosity are commonly associated with spatial variations in the magnitude of the natural logarithm of crustal permeability, and (2) many parameters, including permeability have a scale-invariant power law distribution in the crust. The first observation means that crustal permeability

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22

Ketchum, K. L., and L. B. Haberly. "Membrane currents evoked by afferent fiber stimulation in rat piriform cortex. II. Analysis with a system model." Journal of Neurophysiology 69, no. 1 (1993): 261–81. http://dx.doi.org/10.1152/jn.1993.69.1.261.

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1. The detailed visualization of membrane currents over time and depth provided by current source-density (CSD) analysis was used as the basis for development of a system model that reproduces the response of piriform cortex to afferent fiber stimulation. This model has allowed the testing and substantial revision of previous hypotheses concerning the sequence of neuronal events underlying this response, has enabled net membrane currents visualized by CSD analysis to be separated into active and passive components, and has generated predictions for important axonal and synaptic parameters as w

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Ormotsadze, G. L., T. V. Sanikidze, T. G. Cercvadze, L. B. Badzgaradze, L. G. Purtskhvanidze, and L. G. Ormotsadze. "Evaluation of Distribution of Cardiac Doses in Breast Cancer Radiotherapy and Prediction of Percentage Increase in Cardiovascular Risk in the Georgian Female Population." Radiobiology and Radiation Safety 1, no. 2 (2021): 9–19. https://doi.org/10.63465/rrs120213295.

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The purpose of this article is the preliminary Evaluation of cardiac doses distribution in breast cancer radiotherapy and Prediction of Percentage Increase in Cardiovascular Risk in the Georgian Female Population. Patients: The histories of 100 patient cases (40 right breast cancer, 60 left breast cancer) who underwent a course of radiation therapy at the Kutaisi Christina Kiri Cancer Centrein the years 2017-2018, were analysed.Dose Evaluation: Patient irradiation program and dose evaluation were performed using conformal 3D and IMRT planning (ZXOX20) and eclipse system based on diagnostic CT

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Šimkovic, Matuš, and Birgit Träuble. "Additive and multiplicative probabilistic models of infant looking times." PeerJ 9 (July 15, 2021): e11771. http://dx.doi.org/10.7717/peerj.11771.

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Additive and multiplicative regression models of habituation were compared regarding the fit to looking times from a habituation experiment with infants aged between 3 and 11 months. In contrast to earlier studies, the current study considered multiple probability distributions, namely Weibull, gamma, lognormal and normal distribution. In the habituation experiment the type of contrast between the habituation and the test trial was varied (luminance, color or orientation contrast), crossed with the number of habituation trials (1, 3, 5, or 7 habituation trials) and crossed with three age cohor

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Havelaar, Arie H., Kathleen M. Vazquez, Zeynal Topalcengiz, Rafael Muñoz-Carpena, and MICHELLE D. DANYLUK. "Evaluating the U.S. Food Safety Modernization Act Produce Safety Rule Standard for Microbial Quality of Agricultural Water for Growing Produce." Journal of Food Protection 80, no. 11 (2017): 1832–41. http://dx.doi.org/10.4315/0362-028x.jfp-17-122.

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ABSTRACT The U.S. Food and Drug Administration (FDA) has defined standards for the microbial quality of agricultural surface water used for irrigation. According to the FDA produce safety rule (PSR), a microbial water quality profile requires analysis of a minimum of 20 samples for Escherichia coli over 2 to 4 years. The geometric mean (GM) level of E. coli should not exceed 126 CFU/100 mL, and the statistical threshold value (STV) should not exceed 410 CFU/100 mL. The water quality profile should be updated by analysis of a minimum of five samples per year. We used an extensive set of data on

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Wood, R. "Drizzle in Stratiform Boundary Layer Clouds. Part II: Microphysical Aspects." Journal of the Atmospheric Sciences 62, no. 9 (2005): 3034–50. http://dx.doi.org/10.1175/jas3530.1.

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Abstract This is the second of two observational papers examining drizzle in stratiform boundary layer clouds. Part I details the vertical and horizontal structure of cloud and drizzle parameters, including some bulk microphysical variables. In this paper, the focus is on the in situ size-resolved microphysical measurements, particularly of drizzle drops (r &gt; 20 μm). Layer-averaged size distributions of drizzle drops within cloud are shown to be well represented using either a truncated exponential or a truncated lognormal size distribution. The size-resolved microphysical measurements

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Huffman, J. A., B. Treutlein, and U. Pöschl. "Fluorescent biological aerosol particle concentrations and size distributions measured with an ultraviolet aerodynamic particle sizer (UV-APS) in Central Europe." Atmospheric Chemistry and Physics Discussions 9, no. 4 (2009): 17705–51. http://dx.doi.org/10.5194/acpd-9-17705-2009.

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Abstract. Primary biological aerosol particles (PBAPs), including bacteria, spores and pollen, are essential for the spread of organisms and disease in the biosphere, and numerous studies have suggested that they may be important for atmospheric processes, including the formation of clouds and precipitation. The atmospheric abundance and size distribution of PBAPs, however, are largely unknown. At a semi-urban site in Mainz, Germany, we used an ultraviolet aerodynamic particle sizer (UV-APS) to measure fluorescent biological aerosol particles (FBAPs), which can be regarded as viable bioaerosol

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Huffman, J. A., B. Treutlein, and U. Pöschl. "Fluorescent biological aerosol particle concentrations and size distributions measured with an Ultraviolet Aerodynamic Particle Sizer (UV-APS) in Central Europe." Atmospheric Chemistry and Physics 10, no. 7 (2010): 3215–33. http://dx.doi.org/10.5194/acp-10-3215-2010.

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Abstract. Primary Biological Aerosol Particles (PBAPs), including bacteria, spores and pollen, are essential for the spread of organisms and disease in the biosphere, and numerous studies have suggested that they may be important for atmospheric processes, including the formation of clouds and precipitation. The atmospheric abundance and size distribution of PBAPs, however, are largely unknown. At a semi-urban site in Mainz, Germany we used an Ultraviolet Aerodynamic Particle Sizer (UV-APS) to measure Fluorescent Biological Aerosol Particles (FBAPs), which provide an estimate of viable bioaero

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29

Qin, Xuan, Zhiguo Cao, Lichang Wei, Peng Li, and Hao Sun. "Spatial Structure Characteristics of Underground Reservoir Water Storage Space in Coal Mines Considering Shape Characteristics of Crushed Rock." Processes 11, no. 9 (2023): 2611. http://dx.doi.org/10.3390/pr11092611.

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In order to investigate the impact of a crushed rock shape on the storage coefficient of underground reservoirs in coal mines, statistical analysis of the shape characteristics of crushed rocks was conducted, which was followed by numerical packing tests using the rigid block model. These tests aimed to investigate the spatial structure characteristics of underground reservoir water storage space in coal mines under the influence of different shapes of crushed rock. The results demonstrated the following: (1) Crushed rock exhibits a lognormal distribution in its shape characteristic parameters

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Bigarré, Célestin, Pascal Finetti, François Bertucci, Xavier Muracciole, and Sébastien Benzekry. "Abstract 2737: A mechanistic model for prediction of metastatic relapse in early-stage breast cancer using routine clinical features." Cancer Research 82, no. 12_Supplement (2022): 2737. http://dx.doi.org/10.1158/1538-7445.am2022-2737.

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Abstract Estimation of the risk of metastatic relapse is a major challenge to decide treatment options for early-stage breast cancer patients. To date, metastasis free survival (MFS) analysis mainly relies on classical - agnostic - statistical models (e.g., Cox regression). Instead, we propose to derive mechanistic models to predict MFS. The data consisted of patients who did not receive adjuvant systemic therapy from two databases: one (data 1, N = 163) with routine clinical features and the PAI-1 and uPA biomarkers and two (data 2, N = 692) with 11 routine clinical features. The mathematical

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Einasto, Jaan, Anatoly Klypin, Gert Hütsi, Lauri-Juhan Liivamägi, and Maret Einasto. "Evolution of skewness and kurtosis of cosmic density fields." Astronomy & Astrophysics 652 (August 2021): A94. http://dx.doi.org/10.1051/0004-6361/202039999.

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Aims. We investigate the evolution of the one-point probability distribution function (PDF) of the dark matter density field and the evolution of its moments for fluctuations that are Gaussian in the linear regime. Methods. We performed numerical simulations of the evolution of the cosmic web for the conventional ΛCDM model. The simulations covered a wide range of box sizes L = 256 − 4000 h−1 Mpc, mass, and force resolutions, and epochs from very early moments z = 30 to the present moment z = 0. We calculated density fields with various smoothing lengths to determine the dependence of the dens

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Khan, Y. Yu, and О. P. Bala. "Actualization of growth parameters of vegetative origin Oak stands of the Ukrainian forest-steppe zone." Ukrainian Journal of Forest and Wood Science 11, no. 2 (2020): 53–65. http://dx.doi.org/10.31548/forest2020.02.053.

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Sustainable forest management, which based on the balance of ecological, economic and social aspects, requires a continuous updating and developing tools of objective assessment of the current state and further prediction changes of all elements of the forest ecosystem. Currently, questions related to the forecasting in the forestry is very important for actualization the databases in cases when using the continuous forest inventory. Vegetative origin oak stands play an important role in forming natural ecosystems in the Ukrainian forest-steppe zone. They represent 26 percent of all oak stands

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Wu, Liviawati S., Yaming Su, Claire Li, et al. "Abstract 5182: Population pharmacokinetic modeling of ciltacabtagene autoleucel in subjects with relapsed or refractory multiple myeloma." Cancer Research 82, no. 12_Supplement (2022): 5182. http://dx.doi.org/10.1158/1538-7445.am2022-5182.

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Abstract Objectives: Ciltacabtagene autoleucel (cilta-cel, CARVYKTI, previously JNJ-68284528) is a B-cell maturation antigen (BCMA)-directed genetically modified autologous T-cell immunotherapy indicated for the treatment of adult patients with relapsed or refractory multiple myeloma. Due to the restricted expression of BCMA in normal tissue and expression primarily on late-stage B-cells, plasma cells and malignant B-lineage cells, BCMA is an attractive target for cell therapy for multiple myeloma. The chimeric antigen receptor (CAR) consists of two BCMA-targeting single domain antibodies desi

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Vostrotin, V. V., A. Yu Yanov, and L. V. Finashov. "Tritium in the urine of the Mayak PA workers in the period from 2017 to 2019." Radiatsionnaya Gygiena = Radiation Hygiene 14, no. 1 (2021): 102–10. http://dx.doi.org/10.21514/1998-426x-2021-14-1-102-110.

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Objectives. To define the levels of volume activity of tritium compounds and fraction of organically bound tritium in urine of chemical production workers of “Mayak Production Association” in present-day conditions; to identify the relationship between volume activity levels and professional occupation (department and profession). Material and methods. 245 urine samples from 171 workers of Mayak Production Association tritium production facility were collected in the period from 2017 to 2019. Volume activity of tritium compounds was measured by liquid scintillation method using spectrometer Qu

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Strom, Ted, and Nuria Pujol-Moix. "Numerical Analysis Of Platelet Turnover Data Demonstrates Reduced Or Near-Baseline Platelet Production Rates In 90% Of Corticosteroid Non-Responsive Immune Thrombocytopenic Purpura (ITP) Patients." Blood 122, no. 21 (2013): 3532. http://dx.doi.org/10.1182/blood.v122.21.3532.3532.

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Abstract ITP is a heterogeneous diagnosis of exclusion. Diagnostic methods capable of distinguishing the effects of impaired platelet production and rapid platelet consumption would enable classification of ITP patients on the basis of these basic pathophysiologic mechanisms. Data from in vivo platelet consumption studies may allow this, but it has been difficult up to now to interpret such studies in terms of the concurrent and interactive effects of random consumption, lifespan-dependent platelet consumption, and altered platelet production rates. Here we used a recently described numerical

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Mat Jan, Nur Amalina, Ani Shabri, Shuhaida Ismail, Basri Badyalina, Siti Sarah Abadan, and Norhafizah Yusof. "THREE-PARAMETER LOGNORMAL DISTRIBUTION: PARAMETRIC ESTIMATION USING L-MOMENT AND TL-MOMENT APPROACH." Jurnal Teknologi 78, no. 6-11 (2016). http://dx.doi.org/10.11113/jt.v78.9202.

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The three-parameter lognormal (LN3) distribution has been applied to the frequency analysis of flood events. L-moment and TL-moment methods are applied in estimating parameters of the LN3 distribution which are L-moment, η = 0 and TL-moment, η = 1, 2, 3, and 4 to the LN3 distribution. A simulation study is conducted in this paper by fitting this distribution to generate LN3 and non LN3 samples. Relative Root Mean Square Error (RRMSE) and relative bias are evaluated to illustrate the performance of this distribution. The performance of TL-moments approach was compared with L-moments based on th

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Mage, David T., and E. Maria Donner. "The Sudden Infant Death Syndrome is a Probability Process." December 8, 2012. https://doi.org/10.5281/zenodo.7886.

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The Sudden Infant Death Syndrome (SIDS) is sudden-unexpected death of an infant that remains unexplained after thorough forensic autopsy, death scene investigation and review of the infant's medical history. As the results of a few spins of a roulette wheel cannot establish whether the wheel is honest (uniform value distribution), medical investigations of a few SIDS cases have not been able to uncover the mechanistic cause of death. We propose that this is because statistical analyses of large numbers of independent observations may be required to unmask the apparent probability processes

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Scholkmann, F., H. Zohdi, and U. Wolf. "The Resting-State Pulse-Respiration Quotient of Humans: Lognormally Distributed and Centered Around a Value of Four." Physiological Research, October 25, 2019, 1027–32. http://dx.doi.org/10.33549/physiolres.934232.

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The pulse-respiration quotient (heart rate divided by the respiration rate, PRQ = HR/RR) is a parameter capturing the complex state of cardiorespiratory interactions. We analysed 482 single PRQ values obtained from measurement on 134 healthy adult subjects (49 men, 85 women, age: 24.7 ± 3.4, range: 20–46 years) during rest. We found that the distribution of PRQ values (i) has a global maximum at around a value of 4 (median: 4.19) and (ii) follows a lognormal distribution function. A multimodality of the distribution, associated with several PRQ attractor states was not detected by our group-le

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Arya, Bhaskar, Tirthankar Roy Choudhury, Aseem Paranjape та Prakash Gaikwad. "Lognormal semi-numerical simulations of the lyman-α forest: Comparison with full hydrodynamic simulations". Monthly Notices of the Royal Astronomical Society, 6 лютого 2023. http://dx.doi.org/10.1093/mnras/stad386.

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Abstract Observations of the Lyman-α (Lyα) forest in spectra of distant quasars enable us to probe the matter power spectrum at relatively small scales. With several upcoming surveys, it is expected that there will be a many-fold increase in the quantity and quality of data, and hence it is important to develop efficient simulations to forward model these data sets. One such semi-numerical method is based on the assumption that the baryonic densities in the intergalactic medium (IGM) follow a lognormal distribution. In this work, we test the robustness of the lognormal model of the Lyα forest

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Smith, Nicholas M. J., Snapper R. M. Magor-Elliott, Christopher J. Fullerton, et al. "The Lognormal Lung: A new approach to quantifying lung inhomogeneity in COPD." Frontiers in Physiology 13 (October 31, 2022). http://dx.doi.org/10.3389/fphys.2022.1032126.

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Early diagnosis and disease phenotyping in COPD are currently limited by the use of spirometry, which may remain normal despite significant small-airways disease and which may not fully capture a patient’s underlying pathophysiology. In this study we explored the use of a new non-invasive technique that assesses gas-exchange inhomogeneity in patients with COPD of varying disease severity (according to GOLD Stage), compared with age-matched healthy controls. The technique, which combines highly accurate measurement of respiratory gas exchange using a bespoke molecular flow sensor and a mechanis

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Nazarov, L. E., and V. M. Smirnov. "Estimation of signal reception probability characteristics using models of fading transionosphere channels." Journal of Radio Electronics 2020, no. 11 (2020). http://dx.doi.org/10.30898/1684-1719.2020.11.7.

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Statistical models of narrow-band transionosphere channels, which determine the occurrence of signal fading due to random temporal and spatial fluctuations of the electron density of ionospheric irregularities, are considered. Fading models are based on the use of empirical relationships with respect to the distribution density of the amplitude of the signals at the output of the transionosphere channel as a random process. The parameters of empirical distribution densities (lognormal distribution, m-Nakagami distribution, Rician distribution) are related to the scintillation coefficient of si

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Bartoszeck, Alexandra Consuelo De Plácido e. Silva, Sebastião Do Amaral Machado, Afonso Figueiredo Filho, and Edilson Batista Oliveira. "A DISTRIBUIÇÃO DIAMÉTRICA PARA BRACATINGAIS EM DIFERENTES IDADES, SÍTIOS E DENSIDADES NA REGIÃO METROPOLITANA DE CURITIBA." FLORESTA 34, no. 3 (2004). http://dx.doi.org/10.5380/rf.v34i3.2418.

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Esta pesquisa tem como objetivo estudar o comportamento de funções de densidade probabilística no ajuste de distribuições diamétricas para diferentes idades, sítios e densidades para povoamentos de bracatinga (Mimosa scabrella Benth) localizados nos municípios da Região Metropolitana de Curitiba, PR. Os dados utilizados são provenientes de um experimento delineado em blocos ao acaso, constituído de 5 blocos e 4 tratamentos, perfazendo um total de 20 parcelas, as quais foram remedidas 4 vezes às idades aproximadas de 4, 5, 6 e 7,5 anos de idade. A densidade inicial foi reduzida para 2000, 4000,

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Matteri, Antonio, Andrea Pallottini, and Andrea Ferrara. "Can primordial black holes explain the overabundance of bright super-early galaxies?" Astronomy & Astrophysics, April 8, 2025. https://doi.org/10.1051/0004-6361/202553701.

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The James Webb Space Telescope (JWST) is detecting an excess of high-redshift (z≳ 10) bright galaxies that challenge most theoretical predictions. To address this issue, we investigated the impact of primordial black holes (PBHs) on the halo mass function and UV luminosity function (LF) of super-early galaxies. We explored two key effects: (i) The enhancement of the massive halo abundance due to the compact nature and spatial distribution of PBHs, and (ii) the luminosity boost, characterized by the Eddington ratio λ_E, caused by active galactic nuclei (AGN) that are powered by matter accretion

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Okie, Jordan G., and David Storch. "The Equilibrium Theory of Biodiversity Dynamics: a general framework for scaling species richness and community abundance along environmental gradients." June 6, 2024. https://doi.org/10.5281/zenodo.13621061.

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This repository contains code to reproduce figures and some results associated with the manuscript “The Equilibrium Theory of Biodiversity Dynamics: a general framework for scaling species richness and community abundance along environmental gradients”. The statistical analyses require the function 'fit' from the Curve Fitting Toolbox (R2018 and later). The rest of the MATLAB scripts in this repository use only base MATLAB install modules and were written using release R2021a, but are expected to work on more recent releases of Matlab. In order to properly run the Matlab scrip

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