نتایج جستجو برای: d structures (nabighian
تعداد نتایج: 1006397 فیلتر نتایج به سال:
the analytic signal for magnetic anomalies was initially defined as a “complex field deriving from a complex potential” (nabighian, 1972). this function can be computed easily in the frequency domain, its real part is the horizontal derivative of the field and its imaginary part is the vertical derivative. analytic signal processing and interpretation requires few initial assumptions regarding ...
The paper presents an algorithm for automatic detection of UXO anomalies in total-field magnetic data based on the concept of structural index (SI) of a magnetic anomaly. The magnetic field produced by a dipole-like source, such as a UXO, varies with inverse distance cubed and therefore has an SI of 3. Identifying magnetic anomalies having structural indices of 3 enables direct detection of pot...
the aim of this study was to identify the problems of translating markedness structures from english to persian in order to look closely at what possible difficulties translators may face. it also seeks to probe the strategies applied accordingly by iranian translators in translating them. from three translation of blindness novel, the sentences with marked structures were elicited and also the...
investigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
Magnetotelluric (MT) is a natural electromagnetic (EM) technique which is used for geothermal, petroleum, geotechnical, groundwater and mineral exploration. MT is also routinely used for mapping of deep subsurface structures. In this method, the measured regional complex impedance tensor (Z) is substantially distorted by any topographical feature or small-scale near-surface, three-dimensional (...
in reality, most structures involved in geotechnical engineering are three dimensional in nature, and although in many, plane strain or axisymmetric approximations are reasonable, there are some, for which 3-d treatment is required. the quantity of data, and the size of the various vectors and matrices involved in such analysis, increase dramatically. this has sever implications for computer r...
In these notes we shall be concerned with a semantic object which is a generalization of classical structures, Kripke structures and the regular ∗-structures of Ehrenfeuchtde Jongh. We shall start by showing how these different cases can be obtained by imposing different regularly conditions on the basic object (D-structures) and the semantics can then be directly interpreted into the semantics...
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