1,721,181 research outputs found
System Description, Abstraction, and Verification: A Uniform Treatment of Quality and Quantity
No full textion, and Verification: A Uniform Treatment of Quality and Quantity Michael Huth Department of Computing and Information Sciences Kansas State University, Manhattan, KS66506, USA [email protected], +1-785-532-f6350 (ph.), 7353 (fax)g Full version at http://www.cis.ksu.edu/~huth/fsstcs99.ps.gz May 7, 1999 Abstract We build on the established work on modal transition systems and probabilistic specifications to sketch a framework in which system descriptions, abstraction, and finite-state model checking all have a uniform presentation across various levels of qualitative and quantitative views together with mediating abstraction and concretization maps. We prove safety results for abstractions within and across such views for the "forall fragment" of the modal mu-calculus and show that such abstractions allow for some compositional reasoning with respect to a uniform family of process algebras `a la CCS. 1 Introduction and Motivation Process algebras such as Milner's CCS [Mil89] and modu..
Impacts and Supply Chain Resilience Strategies to Cope with COVID-19 Pandemic: A Literature Review
No full textCoronavirus COVID-19 is an extraordinary event that can be categorized as a subcategory of Supply Chain (SC) disruptions. This pandemic has impacted supply chains differently, depending on the produced item, the industry, and the role of firms along the supply chains. Several studies, that emerged during the last 2 years, have analyzed the impact of COVID-19 on supply chains and firms, and the strategies adopted to cope with the pandemic. In addition to several resilience strategies, papers also highlighted the key role of digitalization to support firms in building more effective resilience strategies. The literature on the topic is however still fragmented. To overcome this fragmentation, our chapter offers a Systematic Literature Review (SLR), which investigates, in particular, the impacts of COVID-19 on Supply Chain Management (SCM) areas and actors, the SC resilience strategies which can enable firms to cope with the pandemic, and the role of digitalization. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG
An Abstraction-Based Analysis of Rule Systems for Active Database Management Systems
No full textion-Based Analysis of Rule Systems for Active Database Management Systems Tarek S. Ghazi and Michael Huth Department of Computing and Information Sciences Kansas State University, Manhattan, KS66506, USA fghazit,[email protected] Abstract. An active database management system (ADBMS) augments a conventional DBMS with the capability to automatically react to stimuli occurring within and outside a database. This is usually achieved by incorporating a DBMS with a set of rules which determine the actions a DBMS should automatically execute when certain events and conditions arise. In this manner ADBMSs can be used to enforce and manage integrity constraints, provide security in databases, or act as alerters or triggers. However, one would like to be sure that the execution of some chain of rules is guaranteed to terminate; or that a set of rules interacts in a manner that is consistent with their intended semantics. We examine model checking and abstract interpretation as a possible fra..
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
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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