نتایج جستجو برای: polar modulation
تعداد نتایج: 194640 فیلتر نتایج به سال:
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The intermediate polar HT Cam is unusual in that it shows no evidence for dense absorption in its spectrum. We analyse an XMM-Newton observation of this star, which confirms the absence of absorption and shows that the X-ray spin-pulse is energy independent. The modulation arises solely from occultation effects and can be reproduced by a simple geometrical model in which the lower accretion foo...
Spread spectrum communication is a new theory and modulation technique, and different from the conventional communication system. A good correlation property and large linear period of Pseudo-random sequence is the basis of spread spectrum communication systems intern CDMA (code division multiple access communication systems). Out of several techniques to implement direct sequence spread Spectr...
[1] A survey of Advanced Rio‐Imaging Experiment in Scandinavia data reveals evidence for a previously overlooked generation mechanism of high azimuthal wave number magnetospheric waves. Here we present observations of pulsating cosmic noise absorption with azimuthal wave numbers as high as 380, suggestive of precipitation modulation by magnetospheric waves. Dispersion relations of the small‐sca...
Abstract. The modulation of the winter impacts Arctic sea-ice loss by Pacific Decadal Oscillation (PDO) is investigated in IPSL-CM6A-LR ocean–atmosphere general circulation model. Ensembles simulations are performed with constrained concentration following Polar Amplification Model Intercomparison Project (PAMIP) and initial conditions sampling warm cold phases PDO. Using a linear model, we est...
Some of the Adamantane properties were calculated in this study. Chemical shift, free energy ofsolvation, free energy of cavity formation, Henry's law constant, and other properties ofAdamantane in dry phase, three solvents and three temperatures have been calculated with Abinitio method base on density functional theory (DFT) at B3lyp/6-31g, B31yp/6-31g*, B3lyp/6-31+g* and B3lyp/6-31++g** leve...
field programmable gate array ها آرایه های گیتی قابل برنامه ریزی می باشند که به طراح این تواناییرا می دهد تا طراحی دیجیتال خود را آنچنان که می خواهد و با هر حجم و پیچیدگی لازم، طراحی کند. یکی از زبانهای توصیف سخت افزاری این ic ها vhdl می باشد.بدین ترتیب fpga امکانات جدید را در پردازش اطلاعات بوجود آورد، یک fpga می تواند جایگزین چندین مدار سخت افزاری عادی شود.پس می توان fpga را در موارد مختلف بک...
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