منابع مشابه
Geometric Tomography
422 NOTICES OF THE AMS VOLUME 42, NUMBER 4 T omography, from the Greek τóμoς, a slice, is by now an established and active area of mathematics. The word is usually associated with computerized tomography, the dramatic applications of which include the CAT scanner in medicine. In such applications, information is collected about sections of a density distribution. By various techniques, this inf...
متن کاملStereology.
1.1 組織標本を使用する定量解析が抱える諸問題 組織標本の解析は定性的な所見から始まる.顕微鏡を用いた丁寧な観察によって初めて得られる検体の 大きさや分布,形態などについての詳細な情報は,全ての研究の基礎となるべき重要なものである.しか しながら,定性的なデータだけでは,統計学的な検討が難しく,結果が主観的なものになりやすい.この ため,生理的組織と病的組織の比較など,さらなる研究を行う際には,定量的なデータが必要になる.定 量解析の基本的な命題は,いかにして検体の正確な数を客観的に求めることができるか,ということであ る.組織標本に基づく定量解析は単純に思われるが,正確なデータを得ることは実は容易ではない. 最大の問題は,サンプリングバイアスである(図1).これは,標本抽出の際に母集団を代表していない 検体が選ばれるために生じる偏りのことであり,2次元的な切片を使って定量解析を行...
متن کاملGeometric Tomography{corrections and Update
xiv Add to the acknowledgment list: Alex Koldobsky. xv Add the following note for the second printing: The book has been revised for the second printing. Several mistakes have been corrected, and some references updated. Any further mistakes or misprints, no matter how small, can be communicated quickly to the following e-mail address: gardner@@baker.math.wwu.edu. The author thanks all readers ...
متن کاملWavelets and Local Tomography
In this paper, formulas relating the Radon transform and Radon transform inversion to various wavelet and multiscale transformations, including the continuous wavelet transform, the semi{continuous wavelet transform of Mallat, steerable multiscale lters of Freeman and Adelson, and separable orthogonal and non{orthogonal wavelet bases, are given. The use of wavelets as a valuable tool in the loc...
متن کامل18th European Stereology Course
An International Stereology course approved by the International Society for Stereology. This course will provide participants with a practical introduction to recent advances in stereology. There will be ample opportunity for discussion between participants and the experienced instructors on specific stereological problems related to the participants’ own projects. Particular emphasis will be ...
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ژورنال
عنوان ژورنال: Advances in Applied Mathematics
سال: 2003
ISSN: 0196-8858
DOI: 10.1016/s0196-8858(02)00502-x