Using Electrical Profiling to Determine Soil Petrophysical Parameters in an Agricultural Field

Spatial Characteristics of Claypan Soil Properties in an Agricultural Field

Spatial variability in soil properties has long been observed within uniformly managed fields. Understanding the spatial characteristics of soil properties would be helpful in understanding soil–landscape relationships and in the development of site-specific management. The primary objective of this research was to quantify the spatial characteristics of claypan soil properties for a 4-ha agric...

Development of an Intelligent System to Synthesize Petrophysical Well Logs

Porosity is one of the fundamental petrophysical properties that should be evaluated for hydrocarbon bearing reservoirs. It is a vital factor in precise understanding of reservoir quality in a hydrocarbon field. Log data are exceedingly crucial information in petroleum industries, for many of hydrocarbon parameters are obtained by virtue of petrophysical data. There are three main petrophysical...

Machine Vision to Determine Agricultural Crop Maturity

An atmospheric electrical method to determine the eddy diffusion coefficient

The ion–aerosol balance equations are solved to get the profiles of atmospheric electric parameters over the ground surface in an aerosol-rich environment under the conditions of surface radioactivity. Combining the earlier results for low aerosol concentrations and the present results for high aerosol concentrations, a relation is obtained between the average value of atmospheric electric spac...

Using Field Specifications to Determine Attribute Equivalence in Heterogeneous Databases

One step in integrating heterogeneous database systems is matching equivalent attributes: Determining which fields in the two databases refer to the same data. We see three (complementary) techniques to automate this process: Synonym dictionaries that compare field n a m e s , design criteria that compare field specifications, and comparison of data values. In this paper we present a technique ...