نتایج جستجو برای: magnetic declination

تعداد نتایج: 339337  

2002
Ivan Yuen

Studies of downtrend have reported that accents/tones are realised at progressively lower F0 values during an utterance. Listeners are reported to compensate for such F0 variations over time( Pierrehumbert 1979). Underlying the downtrend studies is the assumption that the phonological categories under investigation are invariant over time and that declination can be factored out of the quantita...

2005
Haibo Wang Aijun Li Qiang Fang

This paper focuses on analyzing the F0 contour of happy speech. We designed some declarative sentences and recorded them in happy and neutral expressive states. All of our speakers were asked to express these sentences in the same imaginary scene. It is known that emotion can be expressed through modifying acoustic features of speech in various ways, such as pitch, intensity, voice quality and ...

2002
Carlos De Breuck Yuan Tang A. G. de Bruyn Huub Röttgering Wil van Breugel

The 352 MHz Westerbork In the Southern Hemisphere (WISH) survey is the southern extension of the WENSS, covering 1.60 sr between −9 < δ < −26 to a limiting flux density of ∼18 mJy (5σ). Due to the very low elevation of the observations, the survey has a much lower resolution in declination than in right ascension (54 × 54cosecδ). A correlation with the 1.4 GHz NVSS shows that the positional acc...

Journal: :Monthly Notices of the Royal Astronomical Society 2022

ABSTRACT Using a three-component, multiscale diffusion model, we show that the cosmic ray (CR) proton and helium spectra dipole anisotropy can be explained with reasonable parameters. The model includes nearby source associated supernova remnant (SNR) gave rise to Geminga pulsar, at Galactic Centre, component disc. CR flux below TeV is dominated by disc component. centre continuous injection of...

Journal: :فیزیک زمین و فضا 0
جمال‏الدین بنی‏عامریان دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران بهروز اسکویی استادیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران

an_eul is a new automatic method for simultaneous approximation of location, depth, and structural index (geometry) of magnetic sources. in the 2d case analytic signal is defined as a conjugate function whose imaginary part is the hilbert transform of its real part. since the first vertical derivative of the magnetic field is the hilbert transform of its horizontal derivative, vertical and hori...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1392

a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...

2007
D. K. Rea B. A. van der Pluijm

We have determined the azimuth of bottom-current flow in drift deposit sediments recovered at ODP Sites 1095 and 1101, Antarctic Peninsula, using paleomagnetic reorientation of anisotropy of magnetic susceptibility (AMS) ellipsoids. A total of 38 cores from the two ODP sites have been measured, providing spatial and directional information on the physical record of the ACC (Antarctic Circumpola...

2017
M. P. Natali A. Meza

The effect of the thermospheric vertical neutral wind on vertical total electron content (vTEC) variations including longitudinal anomaly, remaining winter anomaly, mid-latitude summer night anomaly, and semiannual anomaly is studied at mid-latitude regions around zero magnetic declination at midnight during high solar activity. By using the principal component analysis (PCA) numerical techniqu...

2007
Julie Bowles

Both shipboard and shore-based magnetic studies of Ocean Drilling Program (ODP) Leg 208 sediments produced poor-quality irectional data. A noisy inclination signal and a pervasive declination bias demonstrate that the sediments had been remagnetized nd/or deformed. In an attempt to characterize any deformation, we carried out anisotropy of magnetic susceptibility (AMS) experments on a suite of ...

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