1,720,962 research outputs found
Method of Control of Data which is Presented by Residual Classes
No full textThe method of increasing truthfulness of control of data which is presented by residual classes (RC) is considered in the article. The results of calculations and comparative analysis of truthfulness of data control in RC have shown that efficiency of non-positional coding in residual classes greatly rises with bit grid of handled data increasing
Design of a residual adder in computer systems
No full textThe purpose of this article is to consider an algorithm for synthesizing the structure of the adder of two residuals ai and bi numbers A = (a1, a2,..., ai,..., ak ) and B = (b1, b2,..., bi,..., bk ) for an arbitrary value of the module mi of the residual class system (RCS), by organizing inter-bit connections between binary one-bit adders (BOA), the combination of which makes up the structure of modulo adder. The algorithm for the synthesis of adders by arbitrary modules is based on the usage of existing adders by module M = 2n -1, which consists of a set of sequentially located BOA, by introducing and using additional inter-bit connections of the form X↓i↑ j. Specific examples of the synthesis of structures of binary adders for various values of the RCS modules mi are given
Mathematical Model of the Reliability of a Computer System which is Functioning in the Residual Class System, Taking into Account the Reliability of Switching Devices
No full textThe article discusses the option of constructing of the mathematical model of the reliability of a computer system (CS), which is functioning in the residual class system (RCS). In contrast to the known ones, the proposed mathematical model of reliability, in terms of the probability of failure-free operation, takes into account the influence of the reliability of switching devices on the process of functioning of the CS in the RCS. The results of studies of the proposed mathematical model of the reliability of the CS and the results of the comparative analysis of reliability showed that the use of the RCS provides higher reliability of the CS with lower hardware costs) than the majority tripleting method of the CS, which is widely used in the positional binary notation. This is achieved due to the fact that in the considered version of the mathematical model of the CS reliability, such types of redundancy as: structural, informational and functional, the presence of which is due to the properties of the RNS, are more fully taken into account. This circumstance makes it possible to apply the appropriate backup methods. The article shows that a gain in the amount of CS equipment is achieved from 2.5 to 42%
Determination of Positional Characteristics of Numbers in the Residual Class System
No full textThe article explores techniques for implementing arithmetic operations in the system of residual classes (SRC). Examples of determination of positional characteristics of numbers which are presented in the residual class system are given. In particular, the determination of the rank of a number can be carried out in the dynamics of a computational process, i.e. without stopping calculations for the duration of non-positional operations of transferring numbers from the system of residual classes to the positional number system and vice versa. The method of determination of positional characteristic of non-positional code - rank of number in SRC is considered in the article. Examples are given to show that determination of the rank of number can be implemented without stopping the calculation process. This gives the opportunity to fully use the main feature of the RC, which is high-speed of performing arithmetic operations
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“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
Full text linkWe 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
Full text linkWe 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
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