Results 21 to 30 of about 1,675 (179)

Semivariogram analysis of bone images implemented on FPGA architectures [PDF]

Journal of Real-Time Image Processing, 2016
Osteoporotic fractures are a major concern for the healthcare of elderly and female populations. Early diagnosis of patients with a high risk of osteoporotic fractures can be enhanced by introducing second-order statistical analysis of bone image data using techniques such as variogram analysis.
Mukul V. Shirvaikar, Yamuna Lagadapati, Xuanliang N. Dong   +2 more
openaire   +2 more sources

Species‐Specific Genetic Patterns in Sympatric Freshwater Turtles Challenge a Generalized Multi‐Species Conservation Approach

Animal Conservation, EarlyView.
We compared genetic diversity and spatial genetic structure in the snapping turtle (Chelydra serpentina; left panel), Blanding's turtle (Emydoidea blandingii; bottom right), and spotted turtle (Clemmys guttata; top right) sampled in areas of co‐occurrence across ~49,160 km2.
Christina M. Davy, Erica Newton, Niamh Wall, Robert W. Murphy   +3 more
wiley   +1 more source

Some aspects about the spatial dependence index for variability of soil attributes

Ciência Rural, 2018
: The main purpose of this article was to evaluate the behavior and relationship of the range and components of SDI (Spatial Dependence Index) in general and in function of field factors such as soil types, type of attribute and soil layers.
Eduardo Lucas Ensslin dos Santos, Enio Júnior Seidel, Juliano de Bastos Pazini, Marcelo Silva de Oliveira, Edemar Appel Neto, Ismael Canabarro Barbosa   +5 more
doaj   +1 more source

A Non‐Parametric Framework for Correlation Functions on Product Metric Spaces

International Statistical Review, EarlyView.
Summary We propose a non‐parametric framework for analysing data defined over products of metric spaces, a versatile class encountered in various fields. This framework accommodates non‐stationarity and seasonality and is applicable to both local and global domains, such as the Earth's surface, as well as domains evolving over linear time or time ...
Pier Giovanni Bissiri, Bernardo Nipoti, Emilio Porcu, Philip White   +3 more
wiley   +1 more source

Knowledge gap on the spatial structure of soil nitrogen mineralization variability—A systematic review

Agricultural &Environmental Letters, Volume 11, Issue 2, December 2026.
Abstract Soil nitrogen (N) mineralization governs plant‐available N from soil organic matter and microbial turnover, and is typically estimated as potentially mineralizable nitrogen (PMN) via anaerobic incubations or as N0 and mineralization rate (k) via long‐term aerobic incubations.
Bibash Rokaya, Aaron Lee M. Daigh, Bijesh Maharjan, Javed Iqbal   +3 more
wiley   +1 more source

Analysis and Zonation of Maximum 24-Hour Rainfall of Iran Using Wakeby Distribution and Geostatistic Technique [PDF]

مدیریت بیابان, 2020
Investigation of spatial variability of maximum 24-hour rainfall is very important for assessment of water resources and forecasting of natural disasters.
Farzaneh Fotouhi firoozabad, Hossein Malekinejad   +1 more
doaj   +1 more source

Development and Evaluation of an Urban Atmospheric Inverse Modeling Framework for the Washington, DC and Baltimore, MD Metropolitan Area: Initial Results From an Inert Tracer Case Study

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Accurate quantification of hazardous material releases in cities is critical for emergency managers aiming to mitigate health impacts and mortality in the population. Here, a study on the development and evaluation of a high‐resolution (1‐km, 1‐hr) urban‐scale atmospheric inverse modeling system for the Washington, DC, and Baltimore, MD ...
Miguel Cahuich‐López, Christopher P. Loughner, Fong Ngan, Anna Karion, Lei Hu, Israel Lopez‐Coto, Kimberly Mueller, Julia K. Marrs, Arlyn Andrews, John Miller, Brian C. McDonald, Colin Harkins, Congmeng Lyu, Meng Li, Kevin R. Gurney, Mark Cohen, Howard Diamond, Ariel Stein, James Whetstone   +18 more
wiley   +1 more source

Integrating Support Vector Regression and Kriging in Spatial Interpolation of Statistical Seismicity Parameters

Indonesian Journal of Geography
Spatial interpolation methods, such as Inverse Distance Weighting (IDW) and kriging, are commonly used in various fields. In Kriging method, semivariogram fitting is an important step, where empirical data are used to derive a theoretical model. However,
Dwi Agustin Nuriani Sirodj, Muhammad Nur Aidi, Bagus Sartono, Utami Dyah Syafitri, Bayu Pranata   +4 more
doaj   +1 more source

Spatial heterogeneity of surface roughness on tilled loess slopes in erosion stages

Soil and Water Research, 2018
The main soil erosion areas of the Chinese Loess Plateau are tilled slopes. The knowledge of their spatial heterogeneity will contribute to the understanding of erosion mechanisms on a microtopographic scale.
Qingfeng ZHANG, Jian WANG, Faqi WU
doaj   +1 more source

Nonstationary Spatial Correlation of Earthquake Ground Motions in California

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Assessing seismic risk to spatially distributed infrastructure systems requires realistic representations of spatially correlated ground motions. Existing models for the spatial correlations of ground motions rely on strong second‐order stationarity assumptions, under which the correlation structure is assumed to be invariant across space, potentially ...
Pengfei Wang, Busra Bocekli, Junhui Yang, Scott J. Brandenberg, Jonathan P. Stewart   +4 more
wiley   +1 more source