نتایج جستجو برای: s wave

تعداد نتایج: 908613  

Journal: :فیزیک زمین و فضا 0
مهدی قربانی طالقانی دانشجوی کارشناسی ارشد فیزیک دریا، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، ایران علی اصغر گلشنی استادیار، گروه فیزیک دریا، مرکز ملی اقیانوس شناسی، تهران، ایران

wave prediction is useful for safety and effective management of vessel navigation or construction of offshore structures. since human activity mainly takes place in nearshore regions, accurate wave prediction is necessary there. however, nearshore waves are not easy to predict compared with ocean waves, because not only the waves but also the wind, which is the energy source of the waves, chan...

1998
Manidipa Mitra Haranath Ghosh S. N. Behera

The role of electron correlation on different pairing symmetries are discussed in details where the electron correlation has been treated within the slave boson formalism. It is shown that for a pure s or pure d wave pairing symmetry, the electronic correlation suppresses the s wave gap magnitude (as well as the Tc) at a faster rate than that for the d wave gap. On the otherhand, a complex orde...

1997
A. M. Martin J. F. Annett

Self-consistent interface properties of d and s-wave superconductors. Abstract We develop a method to solve the Bogoliubov de Gennes equation for superconductors self-consistently, using the recursion method. The method allows the pairing interaction to be either local or non-local corresponding to s and d-wave superconductivity, respectively. Using this method we examine the properties of vari...

Studying the production or decay processes of heavy quarkonia (the bound state of heavy quark-antiquark) is a powerful tool to test our understanding of strong interaction dynamics and QCD theory. Fragmentation is the dominant production mechanism for heavy quarkonia with large transverse momentum. The fragmentation refers to the production process of a parton with high transverse momentum whic...

2014
Hristina Mihajloska Danilo Gligoroski

In this paper we can give an overview of some of the popular block ciphers, rather a strong focus is put on the construction of their S-boxes. While we were studding S-boxes we saw that there is a room for improvement. The focus is on putting quasigroups of order 4 with good cryptographic properties and their ! and " # transformations, in order to achieve also small bit S-boxes.

2010
Syed Amir Gilani Amber Javaid Alsafi Abdella Bala

Received 10.01.2010 Accepted 6.04.2010 Med Ultrason 2010, Vol. 12, No 2, 110-113 Address for correspondence: Syed Amir Gilani Faculty of Radiological Sciences and Medical Imaging. Alzaiem Alazhari University, Khartoum, Sudan. Phone; 00249-912174236 Email; [email protected] Abstract Objective: To evaluate the ductus venosus hemodynamic parameters in 31 – 40 weeks gestation normal fetus in the...

1999
P. Estabrooks W. M. Dunwoodie T. A. Lasinski D. W. G. S. Leith

An elastic Kn partial wave analysis is presented. It is based on high statistics data for the reactions K*p K*r’n and K*p K*nA* at 13 GeV obtained in a spectrometer experiment performed at SLAC. For each reaction, a t-dependent parametrization of the production amplitudes provides information on both the Kr mass dependence of the production mechanisms and on Kn scattering. Knowledge of the t-de...

2001
D. Banfield B. J. Conrath M. D. Smith John Wilson

We have analyzed the temperature retrievals from Mars Global Surveyor (MGS) Thermal Emission Spectrometer (TES) nadir spectra to yield latitude-height resolved maps of various atmospheric forced wave modes as a function of season for a full Mars year. Among the isolated wave modes is the zonal mean, time mean temperature, which we used to derive zonal mean zonal winds and stationary wave quasi-...

Journal: :فیزیک زمین و فضا 0
عبداله سهرابی بیدار استادیار، دانشکده زمین شناسی، دانشگاه تهران، ایران محسن کمالیان دانشیار، پژوهشکده مهندسی ژئوتکنیک، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران محمد کاظم جعفری استاد، پژوهشکده مهندسی ژئوتکنیک، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران

it is well established that the seismic ground response of surface topographies may differ from those of free field motion during earthquakes. complex nature of seismic wave scattering by topographical structures can only be solved accurately and economically using advanced numerical methods under realistic conditions. among the numerical methods, the boundary element is a powerful numerical te...

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