1,720,962 research outputs found
Case studies in supply chain management
No full textIn a search for a competitive differential advantage, many managers of world-class organizations have come to realize that differentiating on processes is more sustainable than differentiating on products. Supply chain management is the forward-looking process of coordinating assets to optimize the delivery of goods, services, and information from supplier to customer, balancing supply and demand. Supply chain management looks after current processes (including the ones originated in pure service industries) and determine methods for orchestrating the execution flow, the information flow and the financial flow in supply chains. Supply chain managers look at the whole supply chain from upstream to downstream with both a short- and a long-term mindset. They also troubleshoot breakdowns along the supply chain and respond fluidly to unexpected events
Mitigating the bullwhip effect in the electric power industry: a simulation model and a case study
No full text
Shop floor control in the VLSI circuit manufacturing: a simulation approach and a case study
No full textThis paper introduces a new approach to design and model shop floor control techniques for wafer fabs in the very large-scale integrated circuit manufacturing industry. The new model suggests the scheduling system should be selected by considering the type of work centres–whether they are sequential or batch–and the relevance of set-up times and capacity utilisation rate. The proposed scheduling model has been tested via a simulation model of the existing system, and by using data coming from the field, which leads to consider real-life performance to be close to the output of the simulation campaign. The main results point out that the performance of batch work centres–even though they represent a reduced portion of the whole set of work centres–can remarkably affect the performance of the whole fab. In addition, relevant improvements in term of throughput rate and capital productivity can be obtained also at the shop floor level via slack-based dispatching procedures. Results are particularly appealing because they can be implemented in a very short period and without significant infrastructural investments
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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