نتایج جستجو برای: scatter data

تعداد نتایج: 2418087  

Journal: :Atmospheric Measurement Techniques 2022

Abstract. We propose a novel method for deconvolving incoherent scatter radar data to recover accurate reconstructions of backscattered powers. The problem is modelled as hierarchical noise-perturbed deconvolution problem, where the lower hierarchy consists an adaptive length-scale function that allows non-stationary prior and such enables recovery smooth narrow layers in profiles. estimation d...

Journal: :iranian journal of medical physics 0
afshin akbarzadeh ph.d. student, department of medical physics and biomedical engineering and research center for science and technology in medicine, tehran university of medical sciences, tehran, iran mohammad rreza ay assistant professor in biomedical engineering, biomedical systems & medical physics dept., tehran university of medical sciences & research center for science and technology in medicine, tehran, iran. hossein ghadiri ph.d. student, department of medical physics and biomedical engineering and research center for science and technology in medicine, tehran university of medical sciences, tehran, iran saied sarkar associate professor in biomedical engineering, biomedical systems & medical physics dept., tehran university of medical sciences & research center for science and technology in medicine, tehran, iran.

introduction: one of the most important parameters in x-ray ct imaging is the noise induced by detected scattered radiation. the detected scattered radiation is completely dependent on the scanner geometry as well as size, shape and material of the scanned object. the magnitude and spatial distribution of the scattered radiation in x-ray ct should be quantified for development of robust scatter...

Afshin Akbarzadeh Hossein Ghadiri, Mohammad Rreza Ay, Saied Sarkar

Introduction: One of the most important parameters in x-ray CT imaging is the noise induced by detected scattered radiation. The detected scattered radiation is completely dependent on the scanner geometry as well as size, shape and material of the scanned object. The magnitude and spatial distribution of the scattered radiation in x-ray CT should be quantified for development of robust scatter...

Journal: :Bulletin of the New Zealand Society for Earthquake Engineering 1985

2006
S F Hubert

First and second order Rayleigh and Raman scatter is a common problem when fitting Parallel Factor Analysis (PARAFAC) to fluorescence excitationemission data (EEM). The scatter does not contain any relevant chemical information and does not conform to the low-rank trilinear model. The scatter complicates the analysis instead and contributes to model inadequacy. As such, scatter can be considere...

Journal: :Integrating Materials and Manufacturing Innovation 2014

This study examined the effectiveness of guidance teachers on students’ achievement among Shahed and Isargar guidance school student in scatter plot in West Azerbaijan province in. This research method is causal-comparative. The study population consisted of all 270 Shahed and Isargar students in scatter plot in West Azerbaijan province and all 305 Shahed and Isargar students studying in guidan...

2010
Zhanpan Zhang Xinping Cui Daniel R. Jeske Xiaoxiao Li Jonathan Braun James Borneman

Clustering is rapidly becoming a powerful data mining technique, and has been broadly applied to many domains such as bioinformatics and text mining. However, the existing methods can only deal with a data matrix of scalars. In this paper, we introduce a hierarchical clustering procedure that can handle a data matrix of scatter plots. To more accurately reflect the nature of data, we introduce ...

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