1,720,976 research outputs found
Experiences in Teaching Program Transformation for Software Reengineering
Full text linkLittle attention is given to teaching the theory and practice of software evolution and change in software engineering curricula. Program transformation is no exception. This paper presents the author’s experience in teaching program transformation as a unit in a postgraduate module on software systems reengineering. It describes the teaching context of this unit and two different offerings of it, one using Turing eXtender Language (TXL) and the other using Legacy Computer Aided Reengineering Environment (Legacy-CARE or L-CARE) from ATX Software. From this experience, it was found that selecting the suitable material (that balances theory and practice) and the right tool(s) for the level of students and depth of coverage required is a non-trivial task. It was also found that teaching using toy exercises and assignments does not convey well the practical aspects of the subject. While, teaching with real, even small size, exercises and assignments, is almost non-feasible. Finding the right balance is very important but not easy. It was also found that students understanding and appreciation of the topic of program transformation increases when they are presented with real industrial case studies
Rule-based Model Extraction from Source Code
Full text linkAbstract. In the context of an approach for reengineering legacy software systems at the architectural level, we present in this paper a reverse engineering methodology that uses a model defined as a type graph to represent source-code subject to a code categorization process. Two alternative methods for referencing the source code are discussed: native vs. graphical. To represent the code, the native representation uses the abstract syntax tree while the graphical uses a programming language metamodel. Two options regarding the way that the graph can relate to the source code reference model are also considered: association model vs. direct link. The extraction of the program representation, complying to the type graph, is based on rules that categorize source code according to its purpose. The techniques to address this process, such as the code categorization rules, are shown together with examples.
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
Experience in teaching a software reengineering course
Full text linkSoftware engineering curricula emphasize developing new software systems. Little attention is given to how to change and modernize existing systems, i.e., the theory and practice of software maintenance and reengineering. This paper presents the author’s experience in teaching software reengineering in a masters-level course at University of Leicester, UK. It presents the course objectives, outline and the lessons learned. The main lessons are: first, there is a big shortage of educational materials for teaching software reengineering. Second, selecting the suitable materials (that balance theory and practice) and the right tool(s) for the level of students and depth of coverage required is a difficult task. Third, teaching reengineering using toy exercises and assignments does not convey the practical aspects of the subject. While, teaching with real, even small size, exercises and assignments, is almost infeasible. Getting the balance right requires careful consideration and experimentation. Finally, students understand and appreciate this topic much more if they have previous industrial experience and when they are presented with real industrial case studies
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
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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