Ultrasound fields from triangular apertures

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

pst - diffraction Diffraction patterns for diffraction from circular , rectangular and triangular apertures —

Thanks to Doris Wagner for help with the documentation. Also thanks to: Julien Cubizolles.

متن کامل

Depth from Moving Apertures

Two new focus measure operators for Shape From Focus to estimate the three-dimensional shape of a surface are proposed in this paper. The images are formed by a camera using moving apertures. The well-focused image pixels are identified by frequency analysis or matching with the all-focused image of the scene. Frequency analysis involves the usage of classical focus measure operators and summin...

متن کامل

Triangular Uhf Algebras over Arbitrary Fields

Let K be an arbitrary field. Let (qn) be a sequence of positive integers, and let there be given a family \f¥nm\n > m} of unital Kmonomorphisms *F„m. Tqm(K) —► Tq„(K) such that *¥np*¥pm = %im whenever m < n , where Tq„ (K) is the if-algebra of all q„ x q„ upper triangular matrices over K. A triangular UHF (TUHF) K-algebra is any Kalgebra that is A'-isomorphic to an algebraic inductive limit of ...

متن کامل

Optical near-fields of triangular nanostructures

We compare simulations of optical near-fields of single triangular nanostructures with experimental results from a near-field ablation technique on a periodic arrangement of triangles. We find good agreement of the lateral near-field distributions; nevertheless their dependency on the polarization of the incident light differs by 90◦. Upon increasing the lateral distances of the nanotriangle ar...

متن کامل

Ultrasound Fields in an Attenuating

Ultrasound elds propagating in tissue will undergo changes in shape not only due to diiraction, but also due to the frequency dependent attenuation. Linear elds can be fairly well predicted for a non-attenuating medium like water by using the Tupholme-Stepanishen method for calculating the spatial impulse response, whereas the eld cannot readily be found for an attenuating medium. In this paper...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The Journal of the Acoustical Society of America

سال: 1996

ISSN: 0001-4966

DOI: 10.1121/1.417914