High Frequency Method for Volumetric Analysis

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود 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

A High Precision Time-frequency Analysis Method

To analysis the signal whose frequency changes as time, this article presents a new time-frequency analysis method based on short-time fractional Fourier transform (FRFT) and integration of midpoints. This method uses window functions to divide the signal to many pieces, then the FRFT is used to calculate the frequency modulation (FM) rate of each piece. A chirp signal can be built based on the...

متن کامل

A Finite Frequency Method for -analysis

This paper presents and discusses a method for assuring an upper bound of the structured singular value (), by treating the frequency as a real parametric uncertainty on continuous time systems. Using this approach a complete frequency interval can be covered in one-computation. By subdividing the frequency range and using a pruning scheme an ee-cient and accurate method is obtained for computi...

متن کامل

A Volumetric / Iconic Frequency DomainRepresentation

A novel method for representing 3-D objects that uni es viewer and model centered object representations is presented. A uni ed 3-D frequency-domain representation (called Volumetric Frequency Representation VFR) encapsulates both the spatial structure of the object and a continuum of its views in the same data structure. The frequency-domain image of an object viewed from any direction can be ...

متن کامل

A volumetric method for serum sodium.

LTHOUGH THE FLAME PHOTOMETER jS the method of choice for the determination of serum sodium in most large, well-equipped laboratories, there remains a place for an alternative procedure which can be used in laboratories too small to afford a flame photometer, or which can be carried out by an intern, resident, or general laboratory technician at night or at other times when the photometer operat...

متن کامل

A high frequency amplitude-steered array for real-time volumetric imaging.

Real-time three-dimensional acoustic imaging is difficult in water or tissue because of the slow speed of sound in these media. Conventional pulse-echo data collection, which uses at least one transmit pulse per line in the image, does not allow for the real-time update of a volume of data at practical ranges. Recently, a linear amplitude-steered array was presented that allows the collection o...

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: YAKUGAKU ZASSHI

سال: 1951

ISSN: 0031-6903,1347-5231

DOI: 10.1248/yakushi1947.71.7_705