1,720,974 research outputs found
Towards model checking security of real time Java software
No full textMore and more software libraries and applications in high-performance computing and distributed systems are coded using the Java programming language. The correctness of such pieces of code w.r.t. a given set of security policies often depends on the correct handling of timing between concurrent or recurrent events. Model-checking has proven to be an effective tool for verifying the correctness of software. In spite of the growing importance of this application area of formal methods, though, no approach exists that targets the problem of verifying the correctness of real-Time software w.r.t.Timed specifications. The few existing works focus on very different problems, such as schedulability analysis of Java tasks. In this paper we present an approach combining rule-based static analysis together with symbolic execution of Java code to extract networks of timed automata from existing software and then use Uppaal to model-check them against timed specifications. We show through a real-world case study that this approach can be helpful in model-checking security policies of real-Time Java software
Design and behavioural research study to create evidence-based, EU harmonised consumer waste sorting labels
Full text linkThis Interim Report presents early results of the EU study to develop harmonised, evidence-based waste sorting labels for packaging and receptacles. The project evaluates the Nordic pictogram system and other national schemes to inform the design of an EU-wide solution that enhances consumer understanding and supports better sorting behaviours. A first prototype label has been tested through an online survey in 21 Member States (N=16,380) and participatory workshops in six countries (N=245). Findings highlight the importance of visual clarity, intuitive icons, and consistent use of colour. Evidence shows that text is the most effective design element for improving sorting accuracy, especially when including material identifiers and clear instructions. Component pictograms significantly support the sorting of multi-material packaging. Colour improves salience for some categories, though its effect on overall accuracy is limited. Additional labels reduce salience and can distract from core sorting information. Participants expressed high motivation and confidence in their ability to sort correctly. These findings will inform a second prototype to be tested in a behavioural experiment. By combining behavioural science with participatory design, the study generates actionable insights to support future EU policy and the effective rollout of standardised labels across Europe
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
Automatic repair of timestamp comparisons
Full text linkAutomated program repair has the potential to reduce the developers’ effort to fix errors in their code. In particular, modern programming languages, such as Java, C, and C#, represent time as integer variables that suffer from integer overflow, introducing subtle errors that are hard to discover and repair. Recent researches on automated program repair rely on test cases to discover failures to correct, making them suitable only for regression errors. We propose a new strategy to automatically repair programs that suffer from timestamp overflows that are manifested in comparison expressions. It unifies the benefits of static analysis and automatic program repair avoiding to depend on testing to identify and correct defected code. Our approach performs an abstract analysis over the time domain of a program using a Time Type System to identify the problematic comparison expressions. The repairing strategy rewrites the timestamp comparisons exploiting the binary representation of machine numbers to correct the code. We have validated the applicability of our approach with 20 open source Java projects. The results show that it is able to correctly repair all 246 identified errors. Furthermore, several patches for three open source projects have been acknowledged and accepted by their developers
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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