Modeling and Parameter Optimization of Dynamic Characteristic Variables of Ballast Bed during Operation for Dynamic Track Stabilizer by Bo Yan, Jingjing Yang

“…The high traffic density of railway line causes ballasted track to be extremely busy, and thus it is particularly important to improve the efficiency during railway maintenance. …”
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Singular distributions of random variables with independent digits of representation in numeral system with natural base and redundant alphabet by M. V. Pratsiovytyi, S. P. Ratushniak

“…Given natural parameters $s$ and $r$, where $2\leq s\leq r$, we consider the distribution of a~ran\-dom variable $$\xi=\sum\limits_{k=1}^{\infty}s^{-k}\xi_k\equiv\Delta^{r_s}_{\xi_1\xi_2...…”
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Relationship between topographic variables and live aboveground tree biomass on a large temperate forest plot by Dawn Lemke, Luben Dimov, Helen Czech, Patience Knight, William Finch, Richard Condit

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Urban Form and Environmental Characteristics as Drivers of Air Pollution Exposure Variability and Inequality in Fujian Province, China by Chaohao Ling, Yiqi Zhang, Qian Shen, Ruohan Dai, Bangru Lou, Yiling Kang, Shaofu He

“…Our results show that while overall air pollution levels exhibit substantial variability, spatial inequality in exposure does not always correlate directly with these levels. …”
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Variability of Foveal Avascular Zone Measurements Among Filipino Eyes Using Optical Coherence Tomography Angiography by Roberto Luis F. Franco, MD, DPBO, Carlo Antonino L. Nasol, MD, DPBO, FPCS

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25-hydroxyvitamin D as a predictor of reduced heart rate variability in elderly patients with diabetes mellitus by Tiantian Tang, Xinyu Sun, Xiaoxiang Zhang, Jiaojiao Li, Manjie Wang, Cancan Hui, Yuwei Cheng, Xiaoming Kong, Yan Sun

“…ObjectiveTo analyze the risk factors for decreased heart rate variability (HRV) in elderly diabetic patients and evaluate the predictive value of 25-hydroxyvitamin D [25-(OH)D].MethodsA retrospective study was conducted, enrolling 101 elderly diabetic patients admitted to the Department of Geriatric Endocrinology at the First Affiliated Hospital of Anhui Medical University from 2023 to 2024. …”
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Mapping Spatial Variability of Sugarcane Foliar Nitrogen, Phosphorus, Potassium and Chlorophyll Concentrations Using Remote Sensing by Ericka F. Picado, Kerin F. Romero, Muditha K. Heenkenda

“…The spectral profiles helped to identify areas with visual differences. Spatial variability of nutrient maps confirmed that moisture presence leads to nitrogen and potassium deficiencies, excess phosphorus, and a reduction in vegetation density (93.82%) and height (2.09 m), compared to green, healthy vegetation (97.64% density and 3.11 m in height). …”
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Typical variability of oceanographic fields in the cold intermediate layer and its influence on the water dynamics in the Okhotsk Sea by T. V. Belonenko, P. A. Fayman, V. A. Luchin

“…Spatial variability of temperature and salinity in the cold intermediate layer and water circulation in the Okhotsk Sea are considered for typical cold and warm conditions of the spring season (May-June) determined by separate averaging of all available data of oceanographic observations and diagnostic modeling. …”
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A NEW METHOD TO ESTIMATE FINITE LIFE OF NOTCHED COMPONENTS UNDER VARIABLE AMPLITUDE FATIGUE LOADING by ZHANG Wei, HU MingMin

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Radiation Effects in Flow through Porous Medium over a Rotating Disk with Variable Fluid Properties by Shalini Jain, Shweta Bohra

“…The present study investigates the radiation effects in flow through porous medium over a permeable rotating disk with velocity slip and temperature jump. Fluid properties density (ρ), viscosity (μ), and thermal conductivity (κ) are taken to be dependent on temperature. …”
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Flow channelling and variability in transit times and tortuosity in a fractured rock model with small scale heterogeneity by A. Frampton, A. Frampton

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Soil physical and hydraulic properties in the Donato stream basin, RS, Brazil. Part 1: Spatial variability by Tirzah M. Siqueira, José A. S. Louzada, Olavo C. Pedrollo, Nilza M. dos R. Castro, Marquis H. C. de Oliveira

“…The results have demonstrated larger variability for hydraulic conductivity and for the parameter α of the retention curve, and allowed identifying that the high spatial heterogeneity of the studied variables could be associated with factors such as climate, land use and land cover, sampling errors, sampling grid density and also the level of soil compaction.…”
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ENSO‐Driven Seasonal Variability in Near‐Surface Wind Speed and Wind Power Potential Across China by Zhi‐Bo Li, Ming Sun, Cheng Shen, Deliang Chen

“…This study investigates ENSO‐driven seasonal NSWS variability across China and their implications for wind power density (WPD). …”
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Coherence Analysis for Vibration Monitoring Under High Variability Conditions: Constraints for Cultural Heritage Preventive Conservation by Claudia Pirrotta, Anna Maria Gueli, Carlo Trigona, Sebastiano Imposa

“…In highly variable vibrational environments, such as cultural heritage sites, stadiums, and transportation hubs, these methods often prove inadequate, leading to false modal identification. …”
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Enhanced resolution capability of SWOT sea surface height measurements and their application in monitoring ocean dynamics variability by Y. Wang, S. Zhang, Y. Jia

“…The results showed significant geographic and temporal variations in the ocean dynamics variability scales, which are mainly relative to sea state variability. …”
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Estimating trans-seasonal variability in water column biomass for a highly migratory, deep diving predator. by Malcolm D O'Toole, Mary-Anne Lea, Christophe Guinet, Mark A Hindell

“…Satellite-derived measures of ocean colour reveal temporal and spatial variability of surface chlorophyll-a (a useful proxy for phytoplankton distribution). …”
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Assessing the spatial variability of soil properties in the semiarid areas of Hintalo Wejerat District, Tigray region, Ethiopia by Abeba Nigussie Retta, Fassil Kebede, Mitiku Haile, Girmay Gebresamuel, Amanuel Zenebe, Gebreyohannes Girmay

“…Abstract Knowledge of soil spatial variability and mapping is essential. It helps determine the effects of agricultural activities on soil properties, develop appropriate soil management techniques, and promote site-specific agricultural practices. …”
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Temperate Forest Floor Bryophytes Functionally Respond to Small‐Scale Variability in Water, Light and Nutrient Availability by T. J. Deilmann, M. Bernhardt‐Römermann, J. Hentschel, P. Gros, C. Römermann

“…Functional traits, however, have been hardly studied and are still poorly understood in bryophytes, limiting the understanding of functional responses to environmental variability and future change. Therefore, we here measured 10 functional traits related to water balance (e.g., leaves per cm, branching density, water uptake capacity) and productivity (e.g., shoot length, in situ fluorescence, specific shoot area) and related them to environmental variability for eight common forest floor bryophyte species in two temperate coniferous forests. …”
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Cardiovascular Outcomes and Variability in Plasma Lipid Levels Across Body Mass Index Categories: The ARIC Study by Tianyu Xu, Chang Chen, De-Wei An, Yuanyuan Zhou, Zhongping Yu, Yuzhong Wu, Dexi Wu, Xin He, Jiangui He, Yugang Dong, Jan A. Staessen, Chen Liu, Fang-Fei Wei

“…The aim of this study was to investigate associations of cardiovascular outcomes with lipid variability across body mass index categories. We identified 6689 participants (57.1% women) enrolled in the Atherosclerosis Risk In Communities (ARICs) study who had ≥ 3 measurements of total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C). …”
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Using Lyα Absorption to Measure the Intensity and Variability of z ∼ 2.4 Ultraviolet Background Light by Laurel H. Weiss, Karl Gebhardt, Dustin Davis, Erin Mentuch Cooper, Maja Lujan Niemeyer, Mahdi Qezlou, Mahan Mirza Khanlari, Robin Ciardullo, Daniel Farrow, Eric Gawiser, Simon Gazagnes, Caryl Gronwall, Gary J. Hill, Donald P. Schneider

“…Thanks to the wide area of this survey, we also measure the variability of this light across the sky. The data suggest an asymmetric geometry where integrated UV light from background galaxies is absorbed by H i within the halo of a foreground galaxy, in a configuration similar to damped Ly α systems. …”
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