Separation of geochemical anomalies from background has always been a major concern of exploration geochemistry. The search for methods that can make this analysis quantitative and objective aims not only at the reduction of subjectiveness but also at providing an automatic routine in exploration, assisting the interpretation and production of geochemical maps. This report discusses two methodo...

The study was carried out with 107 measurements of volumetric soil water content (SWC) and electrical conductivity (EC) for soil profile (0-30 cm) and the estimating accuracy of ordinary kriging (OK) and back-propagation neural network (BPNN) was compared. The results showed that BPNN method predicted a slightly better accurate SWC than that of OK, but differences between both methods were not ...

Analyzing massive spatial datasets using a Gaussian process model poses computational challenges. This is problem prevailing heavily in applications such as environmental modeling, ecology, forestry and health. We present novel approximate inference methodology that uses profile likelihood Krylov subspace methods to estimate the covariance parameters makes predictions with uncertainty quantific...

INTRODUCTION Although surgery is the treatment of choice for thyroglossal duct cysts, it can give rise to complications, including nerve injury, cyst recurrence, wound infection, and cosmetic problems. Use of a nonsurgical procedure could prevent these complications. Although simple aspiration of otolaryngological cystic diseases is a noninvasive treatment, cyst recurrence is commonly observed ...

13 Digital Game based Learning for Undergraduate Calculus Education: Immersion, Calculation, and Conceptual Understanding Yu-Hao Lee, University of Florida, Gainesville, FL, USA Norah Dunbar, University of California Santa Barbara, Santa Barbara, CA, USA Keri Kornelson, University of Oklahoma, Norman, OK, USA Scott Wilson, University of Oklahoma, Norman, OK, USA Ryan Ralston, University of Okla...

Raster based digital elevation models (DEM) are the basis of some of the most important GIS workflows: hydrologic modeling, site suitability, and cost path analysis. While there are several techniques for generating digital elevation models (DEMs), none of them can produce a true elevation surface. Locally varying measurement error and the inexactness of the interpolation methods contribute to ...

introduction rainfall erosivity, the propulsion or power of causing erosion in separation and transport of soil particles, is in relation to water erosion. rainfall erosion is causing loss of soil, damage to agriculture and infrastructures which is followed by water pollution. changes in rainfall patterns exacerbate risk of erosion globally. rainfall erosivity plays an effective role in soil er...

Methods of Land Use Regression (LUR) modeling and Ordinary Kriging (OK) interpolation have been widely used to offset the shortcomings of PM2.5 data observed at sparse monitoring sites. However, traditional point-based performance evaluation strategy for these methods remains stagnant, which could cause unreasonable mapping results. To address this challenge, this study employs 'information ent...