1,720,955 research outputs found
On Decoding of Quadratic Residue Codes
Get PDFA binary Quadratic Residue(QR) code of length n is an (n, (n+1)/2) cyclic code over GF(2m) with generator polynomial g(x) where m is some integer. The length of this code is a prime number of the form n = 8l + 1 where l is some integer. The generator polynomial g(x) is defined by g(x)=∏_(i∈Q_n) (x-βi ) where β is a primitive nth root of unity in the finite field GF(2m) with m being the smallest positive integer such that n|2m-1 and Qn is the collection of all nonzero quadratic residues modulo n given by Qn={i│i≡j2 mod n for 1≤j≤n-1}. Algebraic approaches to the decoding of the quadratic residue (QR) codes were studied in [2], [3], [4], [5], [6] and [13]. Here, in this thesis, some new more general properties are found for the syndromes of the subclass of binary QR codes of length n = 8m + 1 or n = 8m - 1. A new algebraic decoding algorithm for the (41, 21, 9) binary QR code is presented by having the unknown syndrome S3 which is a necessary condition for decoding the (41, 21, 9) QR code
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
طريقة جبرية جديدة لفك تراميز البواقي التربيعية (41, 21, 9)
No full textفي هذا البحث قمنا بإيجاد طريقة جبرية جديدة لفك تراميز الكود الثنائى (41, 21, 9), ووجدنا خصائص عامة لـ syndromes و الفئات الفرعية لكود البواقي التربيعية الثنائي ذات الطول الفردي علي الصيغة ن= 8ك±1 حيث ك عدد صحيح, باستخدام هذه الخصائص نظريات جديدة نحتاجها تم اثباتها في المرجع [6] لفك الفئات الفرعية من هذا الصنف من الأكواد. للكود الثنائي (41, 21, 9) قمنا بإيجاد خصائص جديدة للعنصر S3 حيث وجدنا أن جميع العناصر S1, S2,…, S40 نستطيع كتابتها بدلالة كلاً من S1, S3. للتفاصيل انظر المرجع [1]. لقد قدمنا طريقة جبرية جديدة للكود الثنائي (41, 21, 9)
طريقة جبرية جديدة لفك تراميز البواقي التربيعية (41,21,9)
No full textIn this paper, a decoding algorithm was given for the (41, 21, 9) binary QR code. Here, some new more general properties are found for the syndromes of the subclass of binary QR codes of length n = 8l + 1. Using these properties, the new theorems needed to decode this subclass of the QR codes are obtained and proved in [6]. For the binary (41, 21, 9) QR code, every known syndromes (resp., unknown syndromes) can be expressed as some power of S 1 (resp., S 3). For the details about syndromes we refer the reader to [1]. A new algebraic decoding algorithm for the (41, 21, 9) binary QR code is presented .في هذا البحث قمنا بإيجاد طريقة جبرية جديدة لفك تراميز الكود الثنائى (41, 21, 9) , ووجدنا خصائص عامة لـ syndromes و الفئات الفرعية لكود البواقي التربيعية الثنائي ذات الطول الفردي علي الصيغة ن = 8ك ± 1 حيث ك عدد صحيح , باستخدام هذه الخصائص نظريات جديدة نحتاجها تم اثباتها في المرجع [6] لفك الفئات الفرعية من هذا الصنف من الأكواد. للكود الثنائي (41, 21, 9) قمنا بإيجاد خصائص جديدة للعنصر S3 حيث وجدنا أن جميع العناصر S1, S2,…, S40 نستطيع كتابتها بدلالة كلاً من S1, S3 . للتفاصيل انظر المرجع [1] . لقد قدمنا طريقة جبرية جديدة للكود الثنائي (41, 21, 9)
Variations on the Author
Get PDF“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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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