seismic inversion is a method that extracts acoustic impedance data from the seismic traces. sourcewavelets are band-limited, and thus seismic traces do not contain low and high frequency information.therefore, there is a serious problem when the deterministic seismic inversion is applied to real dataand the result of deterministic inversion is smooth. low frequency component is obtained from w...

ABSTRACT In precision agriculture, determining management zones for soil and plant attributes is a complex process that requires knowledge of several variables, which complicates decisionmaking processes. This study evaluated the spatial variability soybean yield chemical properties using geostatistical multivariate analyses to define in an Oxisol. The between 0 0.2 0.4 m depths were sampled at...

This paper discusses the opportunity of using Machine Learning techniques in an automatic environmental mapping context, as was the case for the SIC2004 exercise. First, the Machine Learning methodology is quickly described and compared to Geostatistics. From there, some clues about when to apply Machine Learning are proposed, and what outcomes can be expected from this choice. Finally, three w...

Many queries issued by users in sensor network (SN) applications select the sensor nodes for participation based on predicates involving spatio-temporal or sensed attributes. In this work we put forward the argument that considerable amount of energy can be saved if the processing and communication resulting from such queries can be restricted to the selected nodes. However, this requires disco...