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Some Atmospheric Boundary Layer Characteristics...
79,00 € *
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The structure, evolution and behavior of atmospheric boundary layer (ABL) is largely regulated by topography, land-surface characteristics, atmospheric radiation and synoptic conditions. Therefore, the mesoscale models like Weather Research Forecasting (WRF) are better suited for ABL studies. This book emphasizes upon the ABL characteristics over north Indian region during two contrasting synoptic situations of summer and winter. First chapter is introductory in nature. A brief description about the WRF modeling system is given in the second chapter. Third chapter describes about the study of regional scale boundary layer characteristics over north India. In chapter four, consequences of sensitivity experiments with different land-surface and boundary layer parameterization schemes are presented. To investigate the influence of finer resolution on the boundary layer characteristics, two-way nesting technique is implemented in the study described in fifth chapter by keeping the parent domain intact and the child domains configured with 5 km resolution over the three cities Delhi, Ahmedabad and Jodhpur.

Anbieter: Dodax
Stand: 01.06.2020
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Mathematical Models and Numerical Methods for F...
29,58 € *
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Conformal components are used nowadays at higher rate than ever before. They can be found in curved mobile phones, communication, navigation, and imaging systems in land, water, air, and space vehicles. The integration of those components within the external structure became of significant importance for aerodynamic, electromagnetic, aesthetic, orphysical reasons. As a result, many mathematical models were previously developed to analyze and optimize such conformed devices. In this thesis, we contributed to this field by developing various models for full wave analysis of spheroidal components.As a starting point, mathematical formulas for conforming antennas on oblate and prolate spheroids were obtained. Those conformation methods were validated by conforming many antennas on spheroidal surfaces. They were then used to formulate Method of Moments equations with spheroidally curved current functions for analyzing wire antennas of randomshape conformed to spheroids in the frequency domain. The complete model was applied to a conformal Archimedean spiral antenna on an oblate spheroid and showed that the conformed spiral has similar current distribution as its planar counterpart but produces an unsymmetrical radiation pattern. The obtained model was then extended to spheroidal multi-layer structures by integrating the spheroidal dyadic Green’s Function within its mathematical derivation. However, due to a detected divergence in that function, the model couldn’t be implemented.On the side of time based analysis methods, a Finite Difference Time Domain method was developed for closed oblate and prolate spheroidal structures. Alternative formulas for the structure’s singularities and the condition of numerical stability were derived as well. The obtained model was then validated and used to characterize spheroidal cavities in the time and frequency domains. The method was extended later to unbounded spheroidal domain by deriving the Absorbing Boundary Conditions using the One Way Wave method. The whole model was then applied to characterize a patch antenna conformed to a prolate spheroid. Finally, an analytical solution for the transient fields in spherical multilayer media energized by spherical harmonics source and an algorithm for tracing back the path of all the reflected waves were obtained. The model was applied to different multilayer structures where the transient response was obtained and validated against a numerical solution.

Anbieter: Dodax
Stand: 01.06.2020
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The Ages of Chaos
17,90 CHF *
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The Ages of Chaos includes Stormqueen! and Hawkmistress!, two acclaimed novels by Marion Zimmer Bradley and part of the expansive, genre-bending Darkover series. Set during the lawless Ages of Chaos, when the ruling families of the Seven Domains of Darkover ruthlessly inbred their psychic offspring to gain powerful and fearsome talents, two young women are born with 'wild' psychic gifts. These stories-Stormqueen! and Hawkmistress!, one tragic and one triumphant-combine to give the reader a vivid and poignant picture of a devastating time period in the history of this fantastic world. Stormqueen! During the lawless Ages of Chaos, when the ruling families of Darkover ruthlessly inbred their laran-gifted offspring to gain powerful talents, a baby was born to the lord of Aldaran. This child, born on a dark and thunder-filled night , was possessed of a terrifying and uncontrolled talent: Dorilys, heiress to her father's domain, could unwittingly call forth lightning, even while still a fretful child. Fearful for his daughter's life and the safety of his domain, Lord Aldaran sent to a tower for help. But even the powers of a trained monitor and a Hastur lord might not be enough to save this painfully afflicted and deadly young woman. Hawkmistress! Romilly was an independent tomboy from a noble family, contrary to the social demands of Darkovan women. That was bad enough, but when Romilly's father arranged her marriage to a nobleman she found repulsive, she rebelled. Disguising herself as a boy, she fled into the deep forests. Living off the land was not nearly as difficult for Romilly as for most people, for she possessed a rare and highly-treasured gift-telepathic communication with hawk and horse. But Romilly soon discovered her newfound freedom was far from complete. Pulled into the maelstrom of a civil war, could Romilly find her true role in life without sacrificing her ideals?

Anbieter: Orell Fuessli CH
Stand: 01.06.2020
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The Ages of Chaos
15,49 € *
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The Ages of Chaos includes Stormqueen! and Hawkmistress!, two acclaimed novels by Marion Zimmer Bradley and part of the expansive, genre-bending Darkover series. Set during the lawless Ages of Chaos, when the ruling families of the Seven Domains of Darkover ruthlessly inbred their psychic offspring to gain powerful and fearsome talents, two young women are born with 'wild' psychic gifts. These stories-Stormqueen! and Hawkmistress!, one tragic and one triumphant-combine to give the reader a vivid and poignant picture of a devastating time period in the history of this fantastic world. Stormqueen! During the lawless Ages of Chaos, when the ruling families of Darkover ruthlessly inbred their laran-gifted offspring to gain powerful talents, a baby was born to the lord of Aldaran. This child, born on a dark and thunder-filled night , was possessed of a terrifying and uncontrolled talent: Dorilys, heiress to her father's domain, could unwittingly call forth lightning, even while still a fretful child. Fearful for his daughter's life and the safety of his domain, Lord Aldaran sent to a tower for help. But even the powers of a trained monitor and a Hastur lord might not be enough to save this painfully afflicted and deadly young woman. Hawkmistress! Romilly was an independent tomboy from a noble family, contrary to the social demands of Darkovan women. That was bad enough, but when Romilly's father arranged her marriage to a nobleman she found repulsive, she rebelled. Disguising herself as a boy, she fled into the deep forests. Living off the land was not nearly as difficult for Romilly as for most people, for she possessed a rare and highly-treasured gift-telepathic communication with hawk and horse. But Romilly soon discovered her newfound freedom was far from complete. Pulled into the maelstrom of a civil war, could Romilly find her true role in life without sacrificing her ideals?

Anbieter: Thalia AT
Stand: 01.06.2020
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