1,721,664 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Sparse Multi-Decoder Recursive Projection Aggregation for Reed-Muller Codes
No full textWe thank Emmanuel Abbe and Min Ye for providing us the implementation of RPA decoding. D. Fathollahi and M. Mondelli are partially supported by the 2019 Lopez-Loreta Prize. N. Farsad is supported by Discovery Grant from the Natural Sciences and Engineering Research Council of Canada (NSERC) and Canada Foundation for Innovation (CFI), John R. Evans Leader Fund. S. A. Hashemi is supported by a Postdoctoral Fellowship from NSERC
PET-CT Beyond FDG
No full textAlthoug [18F]fluorodeooxyglucose (FDG) generally shows an exellent performance as a cancer-imaging agent when using PET/CT, there are some settings in wich other radiopharmaceuticals offer advantages. Such non-FDG tracers are now gaining widespread acceptance not only research but also in clinical practise, with the acquisition of promising results in the management of various cancers. This atlas, including about 500 highquality images, is a user-friendly guide to PET/CT imaging beyond FDG. A wide range of tracers is covered such as 18F- and 11C-choline, 11C-methionine, 18F-ethyl-L-tyrosine, 68Ga-DOTA-NOC, 11C-acetate, 11C-thymidine and 18F-DOPA. Troughout, the emphasis is on image interpretation with guidance on the recognition of normal, begin, and malignant uptake and clear instruction on learning points and pitfalls. This book is a companion to the editors' recently published Atlas of PET/CT, which focuses exclusively on the use of FDG. It is designed to serve as a reference text for both nuclear physicians and radiologists, and will also be of great benefit to radiographers, tschnologists and nuclear medicine and radiology residents
Atlas of PET-CT. A quick guide to image interpretetion
No full textThis user-friendly atlas, featuring about 500 images, should be a quick guide to interpreting PET/CT images with FDG in oncology. It also illustrates how to recognize normal, para physiological, and begin pathological upatakes in a case-based pratical manner. The text, wich includes most relevant technical and pathophysiological premises, covers the main clinical applications and clearly articulates learning points and pitfalls. This atlas aims to become a standard text for nuclear menicine physicians and radiologists, residents and technicians whose work involves in PET/Ct imaging. This book is also suiteable for both unadergarduate and post graduate courses
Atlas of SPECT-CT
No full textThe field of nuclear medicine has evolved rapidly in recent years, and one very important aspect of this progress has been the introduction of hybrid imaging systems. PET-CT has already gauned wudespread acceptance in many clinical settings, especially within incology, and now SPECT-CT promises to emulate its success. Useful applications of this new approach have been identified not only in oncology but also andocrinology, cardiology, internal medicine and other specialities. This atlas, which includes hundreds of high-quality images, is a user-frinendly guide to the optimal use and interpretation of SPECT-CT. The full range of potential SPCET-CT applications in clinical routine is considered and assesed by acknowledged experts. The book is designed to serve a reference text for both nuclear physicians and radiologists; it will also provide fundamental support for radiographers, technologists, and nuclear medicine and radiology residents. Following the editors' other atlases on PET-CT and non-FDG PET-CT, the "Atlas of SPECT-CT" completes a triology offering up-to-date information and guidance on the full spectrum of hybrid imaging
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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