نتایج جستجو برای: horizontal roughing filter

تعداد نتایج: 184054  

2004
Douglas A. Gray Robert R. Bitmead

The dynamical behavior of a thin flexible array array motion, becomes more critical. Typical of the more towed through the water is described by the Paidoussis equation. sophisticated towed array processing techniques are adaptive By discretizing this equation in space and time a finite dimenbeamforming [31, adaptive cancellation of tow vessel noise sional state space representation is obtained...

Journal: :فیزیک زمین و فضا 0
مسلم فاتحی دانشجوی دکترای مهندسی معدن - اکتشاف، دانشگاه صنعتی اصفهان، ایران غلامحسین نوروزی دانشیار، دانشکده مهندسی معدن، پردیس دانشکده های فنی، دانشگاه تهران، ایران میثم عابدی دانشجوی دکترای مهندسی معدن – اکتشاف، دانشکده مهندسی معدن، پردیس دانشکده های فنی، دانشگاه تهران، ایران

magnetic survey is nowadays the most efficient non-destructive geophysical method. this technique puts emphasis on the measurement of anomalies of the earth’s magnetic field, caused by the presence of archaeological remains in the ground. magnetic survey is one of the oldest geophysical methods for airborne and land use. that is why there is a large volume of data that could be used for geologi...

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...

Journal: :فیزیک زمین و فضا 0
مژگان امیرامجدی دانشجوی دکتری هواشناسی، گروه فیزیک فضا، مؤسسة ژئوفیزیک دانشگاه تهران، ایران محمد میرزائی استادیار، گروه فیزیک فضا، مؤسسة ژئوفیزیک دانشگاه تهران، ایران علیرضا محب الحجه دانشیار، گروه فیزیک فضا، مؤسسه ژئوفیزیک دانشگاه تهران، ایران

advantages and disadvantages of using “stokes parameters” in exploration of inertia-gravity wave properties are discussed in this paper. the survey is carried out on an inertia-gravity wave event (igws in what follows) that occurred over iran from 7 to 9 february 2012. applying this technique for investigation of atmospheric igws was recommended by vincent and fritts (1987) and then developed b...

2008
Jan Eric Kyprianidis Jürgen Döllner

In this work we present a framework of automatic non-photorealistic image processing techniques that create simplified stylistic illustrations from color images, videos and 3D renderings. To smooth low-contrast regions while preserving edges, we present a new fast separated implementation of the bilateral filter. Our approach works by filtering in direction of the gradient and then filtering th...

2012
Shan Lou Xiangqian Jiang Paul J. Scott

In contrast to the mean-line based evaluation system, motif analysis and morphological filters are two techniques oriented to the characterization of functional properties of surfaces. The motif combination procedure is consistent with the functionality of the morphological closing filter that insignificant peaks on the profile are suppressed. By linking the functionality of the structuring ele...

2016
T. Vigneswaran

This paper presents an efficient constant multiplier architecture based on vertical-horizontal binary common subexpression elimination (VHBCSE) algorithm for designing a reconfigurable finite impulse response (FIR) filter whose coefficients can rapidly change in real time. To design an efficient reconfigurable FIR filter, according to the proposed VHBCSE algorithm, 2-bit binary common sub-expre...

1999
Santanu Chaudhury Rabindra Sheth

Identification of the script in an image of a document page is of primary importance for a system processing multi-lingual documents. In this paper three trainable classification schemes have been proposed for identification of Indian scripts. The first scheme is based upon a frequency domain representation of the horizontal profile of the textual blocks. The other two schemes use connected com...

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