نتایج جستجو برای: dimensional coordinates then

تعداد نتایج: 1172259  

دلخانی, الهه, زراعتکری, فاطمه زهرا, عباسی, شهرام,

We solved one-dimensional hydrodynamic (HD) equations of the slim disks in the presence of the wind and in cylindrical coordinates using self-similar solution. We considered power-law function of for mass loss rate due to wind. Then, we considered mass loss, angular-momentum loss and energy loss in equations. Then, we treated the influence of wind on the dynamics of the system. As an agreement ...

Journal: :رشد و یادگیری حرکتی - ورزشی 0
سعید ارشم دانشجوی دکتری رفتار حرکتی دانشگاه تهران فرزام فرهمند استاد دانشکدة مکانیک دانشگاه صنعتی شریف فضل اله باقرزاده دانشیار دانشگاه تهران الهه عرب عامری استادیار دانشگاه تهران انوشیروان کاظم نژاد استاد دانشگاه تربیت مدرس

the aim of the present study was to introduce the methods to extract and to interpret cinematic data in order to explain movement pattern changes via joint coupling and freezing/freeing phenomena in a healthy right-dominant college male (age:26, height: 172 cm, weight: 80 kg) who practiced balance maintenance on a stabilometer. data were gathered using a three-dimensional registration system wh...

1998
Y. S. Kim

It is possible to construct representations of the Lorentz group using four-dimensional harmonic oscillators. This allows us to construct threedimensional wave functions with the usual rotational symmetry for space-like coordinates and one-dimensional wave function for time-like coordinate. It is then possible to construct a representation of the Poincaré group for a massive particles having th...

Journal: :مهندسی بیوسیستم ایران 0
امین نصیری دانشجوی دکتری مهندسی مکانیک ماشین های کشاورزی، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین مبلی عضو هیات علمی سلیمان حسین پور استادیار گروه مهندسی ماشین های کشاورزی، دانشکده مهندسی و فناوری، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران شاهین رفیعی استاد گروه مهندسی ماشین های کشاورزی، دانشکده مهندسی و فناوری، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران.

in this research for detection and separation cultivation platforms and flowerpots from each other, localization the corner of platforms and position of the flowerpots to form of two-dimensional point and creation two-dimensional map of greenhouse, used three-dimensional coordinates of environment components. results obtained from this research, showed that the proposed algorithm can detect 100...

2002
Omid Shakernia René Vidal Shankar Sastry

We present an algorithm for infinitesimal motion estimation from multiple central panoramic views. We first derive the optical flow equations for central panoramic cameras as a function of both pixel coordinates and back-projection rays. We then derive a rank constraint on the optical flows across many frames, which must lie in a six dimensional subspace of a higher-dimensional space. We then p...

Journal: :Advances in Space Research 2022

We investigate a relativistic positioning system where the coordinates of users are determined by proper times broadcasted clocks in motion spacetime: these so-called emission coordinates. In particular, we focus on flat this case, show that can be defined using an approach based simple geometrical properties geodesic triangles. analyze 2-dimensional case and then how whole procedure applied to...

Journal: :Communications in Mathematical Physics 2016

Journal: :Communications in Mathematical Physics 1978

2009
Pierre Binetruy Misao Sasaki

We present a class of dynamical solutions for an intersecting D4-D8 brane system in ten-dimensional type IIA supergravity. The dynamical solutions reduces to a static warped AdS6 × S geometry in a certain spacetime region. We also consider lower-dimensional effective theories for the warped compactification of general p-brane system. It is found that an effective p + 1-dimensional description i...

In this research work, an improved two-dimensional semi-analytical subdomain based method for performance computation in IPM machine considering infinite-/finite-magnetic material permeability in pseudo-Cartesian coordinates by using hyperbolic functions has been presented. In the developed technique, all subdomains are divided into periodic or non-periodic regions with homogeneous or non-homog...

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