Search Results - subject:"Streuung"

Kockläuner, Gerhard - 2016

Persistent link: https://www.econbiz.de/10011540044

Quick Guide Onlinefragebogen : wie Sie Ihre Zielgruppe professionell im Web befragen

Föhl, Ulrich; Friedrich, Christine - 2022

Der Onlinefragebogen als empirische Erhebungsmethode -- Grundlagen des empirischen Arbeitens -- Formate von Fragen -- Die Formulierung von Fragen -- Fragebogendramaturgie -- Den Fragebogen ins Feld bringen.

Persistent link: https://www.econbiz.de/10012821390

Wavelets for diffusion tensor imaging

2007 - Rev.

In this paper, wavelet basis functions are investigated for their suitability for processing and analysing diffusion tensor imaging (DTI) data. First, wavelet theory is introduced and explained by means of 1d and 2d examples (Section 1.1 - 1.3). General thresholding techniques, which serve as...

Persistent link: https://www.econbiz.de/10003422201

Random noise in diffusion tensor imaging, its destructive impact and some corrections

Hahn, Klaus R.; Prigarin, Sergej; Heim, Susanne; Hasan, … - 2005

The empirical origin of random noise is described, its influence on DTI variables is illustrated by a review of numerical and in vivo studies supplemented by new simulations investigating high noise levels. A stochastic model of noise propagation is presented to structure noise impact in DTI....

Persistent link: https://www.econbiz.de/10003309982

Diffusion tensor imaging : on the assessment of data quality ; a preliminary bootstrap analysis

2003

In the field of nuclear magnetic resonance imaging, diffusion tensor imaging (DTI) has proven an important method for the characterisation of ultrastructural tissue properties. Yet various technical and biological sources of signal uncertainty may prolong into variables derived from diffusion...

Persistent link: https://www.econbiz.de/10002637145