A simple method of transient electromagnetic data analysis

Geophysics ◽  
1998 ◽  
Vol 63 (2) ◽  
pp. 405-410 ◽  
Author(s):  
Maxwell A. Meju
Keyword(s):  
Data Analysis ◽  
Time Domain ◽  
Mineral Resources ◽  
Ease Of Use ◽  
Simple Method ◽  
Diagnostic Data ◽  
Electromagnetic Data ◽  
Transient Electromagnetic ◽  
Interpretive Model

Time-domain or transient electromagnetic (TEM) methods are used routinely in environmental, hydrogeological, energy, and mineral resources investigations owing to their ease of use and ability to generate diagnostic data. In some typical field situations, the gross structure of the subsurface may be approximately 1-D, so 1-D interpretation schemes can be used to retrieve an interpretive model for the depth soundings.

Direct inversion of time‐domain electromagnetic data

Geophysics ◽  
1987 ◽  
Vol 52 (10) ◽  
pp. 1431-1435 ◽  
Author(s):  
A. G. Nekut
Keyword(s):  
Least Squares ◽  
Time Domain ◽  
Time Derivative ◽  
Image Method ◽  
Simple Method ◽  
Geoelectric Section ◽  
Direct Inversion ◽  
Transient Electromagnetic ◽  
Time Domain Electromagnetic ◽  
Central Loop

This note describes a simple method for converting transient electromagnetic (EM) sounding data into profiles of conductivity versus depth, based on an approximate image representation for the decaying induced ground currents. The method can provide one‐dimensional (1-D) inversion for any kind of time‐domain EM sounding data; the discussion here is limited to the case of central‐loop sounding. In particular, I apply the inversion to some time‐derivative central‐loop sounding data and demonstrate that essentially the same interpretation of the geoelectric section is obtained with the simple image method as is obtained using traditional iterative least‐squares fitting to layered models. This simple inverse can be computed much more quickly than an iterative least‐squares inverse, making it possible to estimate the geoelectric section concomitant with data acquisition.

An Empirical Study on the Adoption of E-Commerce in Pondicherry.

Think India ◽  
2019 ◽  
Vol 22 (2) ◽  
pp. 305-314
Author(s):  
Kishore Raaj Suresh
Keyword(s):  
Data Analysis ◽  
Design Methodology ◽  
Measurement Instrument ◽  
Ease Of Use ◽  
Perceived Usefulness ◽  
Perceived Ease Of Use ◽  
Validity And Reliability ◽  
Personal Cost ◽  
Perceived Security ◽  
Perceived Enjoyment

Purpose – This study investigates the consumer’s technology adoption toward electronic commerce. In addition to the variables perceived usefulness and perceived ease of use derived from TAM, the study included and tested factors like perceived security, perceived product value, personal cost, perceived enjoyment, perceived cost and perceived quality. Design/methodology/approach – A questionnaire was developed primarily based on the available scales in the already published literature. All model constructs requested participants to indicate their perceptions of Likert-style responses. The data analysis was executed using Smart PLS to test the validity and reliability of the measurement instrument.

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