Soil Salinity Assessment
Soil Salinity Assessment

Author: J. D. Rhoades

Publisher: Food & Agriculture Org.

Published: 1999

Total Pages: 172

ISBN-13: 9789251042816

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Determination of soil salinity from aqueous electrical conductivity; determination of soil salinity from soil-paste and bulk soil electrical conductivity; example uses of salinity assessment technology; operational and equipment costs associated with salinity instrumentation measurement techniques.

Electromagnetic Simulation Using the FDTD Method
Electromagnetic Simulation Using the FDTD Method

Author: Dennis M. Sullivan

Publisher: John Wiley & Sons

Published: 2013-05-17

Total Pages: 169

ISBN-13: 1118646630

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A straightforward, easy-to-read introduction to the finite-difference time-domain (FDTD) method Finite-difference time-domain (FDTD) is one of the primary computational electrodynamics modeling techniques available. Since it is a time-domain method, FDTD solutions can cover a wide frequency range with a single simulation run and treat nonlinear material properties in a natural way. Written in a tutorial fashion, starting with the simplest programs and guiding the reader up from one-dimensional to the more complex, three-dimensional programs, this book provides a simple, yet comprehensive introduction to the most widely used method for electromagnetic simulation. This fully updated edition presents many new applications, including the FDTD method being used in the design and analysis of highly resonant radio frequency (RF) coils often used for MRI. Each chapter contains a concise explanation of an essential concept and instruction on its implementation into computer code. Projects that increase in complexity are included, ranging from simulations in free space to propagation in dispersive media. Additionally, the text offers downloadable MATLAB and C programming languages from the book support site (http://booksupport.wiley.com). Simple to read and classroom-tested, Electromagnetic Simulation Using the FDTD Method is a useful reference for practicing engineers as well as undergraduate and graduate engineering students.

Monte Carlo Calculations of Light Scattering from Clouds
Monte Carlo Calculations of Light Scattering from Clouds

Author: Plass, Gilbert N.

Publisher:

Published: 1967

Total Pages: 156

ISBN-13:

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The scattering of visible light by clouds is calculated from an efficient Monte Carlo code which follows the multiply scattered path of the photon. The single scattering phase function is obtained from the Mie theory by integration over a particle size distribution. The photons are followed through a sufficient number of collisions and reflections from the lower surface (which may have any desired albedo) until they make a negligible contribution to the intensity. Various variance reduction techniques were used to improve the statistics. The reflected and transmitted intensity is studied as a function of solar zenith angle, optical thickness, and surface albedo. The downward flux, cloud albedo, and mean optical path of the transmitted and reflected photons are given as a function of these same parameters. The numerous small angle scatterings of the photon in the direction of the incident beam are followed accurately and produce a greater penetration into the cloud than is obtained with a more isotropic and less realistic phase function. (Author).

Iranica in the Achaemenid Period (ca. 550-330 B.C.)
Iranica in the Achaemenid Period (ca. 550-330 B.C.)

Author: Jan Tavernier

Publisher: Peeters Publishers

Published: 2007

Total Pages: 926

ISBN-13: 9789042918337

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This book collects and discusses the Old Iranian divine names, personal names, geographical names (toponyms, hydronyms and oronyms) and loanwords, which are attested in texts written in Aramaic, Babylonian, Egyptian, Elamite, Lycian, Lydian and Phrygian. The texts, both royal inscriptions and documentary texts, are discovered in the entire territory of the Achaemenid Empire (from Egypt to Bactria), which controlled the Ancient Near East from ca. 550 to 331 B.C. The Iranica discussed in this book are divided into four categories: (1) directly transmitted Iranica, (2) semi-directly transmitted Iranica, (3) foreign Iranica and (4) indirectly transmitted Iranica (the so-called "Altiranische Nebenuberlieferung"). All expressions, which do not belong to one of these categories, are brought together in a section called "Incerta". The etymology and linguistic setting of each Iranian expression is studied and a list of occurrences is added to this analysis.