1,720,997 research outputs found
Sudan: Widad hassan Ali Karrar
No full textA document from Amnesty International's Urgent Action Networ
Sudan: Samira Hassan Ali Karrar
No full textA document from Amnesty International's Urgent Action Networ
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
Mw Flow State Estimator For The National Grid
No full textAs telemetering and SCADA applications are increasingly being
employed by the National Grid dispatch center, it would be productive to
assess the integrity of the data flow from remote measuring points. It is
inevitable that errors would creep in due to a variety of factors ranging
from flawed meters to a noisy communication channel.
The objective of this project is to setup a state estimator to correlate
the mw flow readings using DC flow methods in conjunction with a
weighted -least-square estimator.
The work is done inclusively on computer simulation using MATLAB
language and LOAD FLOW program. It consists of four stages: -
1st stage: the mw flow in National Grid (NG) transmission lines.
2nd stage: the mw flow after a shift in generation output.
3rd stage: the mw flow after an outage of line.
4th stage: the mw flow state estimator for the three stages abov
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
Fault Analysis Of The Blue Nile Grid
No full textThe National Grid of Sudan (NG) was developing and facing significant and numerous changes
in its topology and generation levels over the years. Reinforcements such as the 110KV
Khartoum ring, additional transformers, uprating of old equipment and new power stations
contribute to the increase in fault levels at all system busbars. As most of the switchgear and
busbar ratings pertain to the early fault level calculations, it becomes necessary to undertake
new fault levels analysis. This is helpful in ascertaining safe operation of the system and
determining upgrading or changes in topology where required.
In this study, a fault analysis programme was developed which enables study of all type of faults
on the system busbars, with the aid of the programme, a complete fault level assessment of the
NG was undertaken on the 220, 110, 33 and 11KV levels.
The fault levels were found to exceed switchgear ratings in some cases and recommendations
for limiting the fault currents are proposed.
It is also noteworthy to mention that in the past, fault calculations were undertaken by Foreign
Consultants while this programme enable NEC to carry out fault investigations whenever and
wherever required
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
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