1,721,035 research outputs found
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
Specifying and Monitoring Non-functional Properties
No full textThis thesis focuses on the implementation and the control of non-functional safety properties during system execution. More concretely, it describes the development process of such properties, starting with the formal specification, the verification, and the runtime enforcement of the specified properties to avoid any undesired behavior.
This thesis starts by studying and classifying the approaches on the specification and runtime verification of non-functional safety properties. When examining these approaches, the following observations are made. First, the non-functional properties are generally ignored in the early phases of the software development process. They are often addressed after the functional part is implemented, which has negative effects on the quality of the code. The approaches that use UML for modeling these properties cannot verify the absence of contradictions between the specified properties. In addition, UML lacks means to express various types of non-functional properties, such as temporal properties. Second, runtime verification approaches monitor the execution of the application at runtime and detect violations of the specified properties. However, just detecting the violation is not sufficient for critical applications. These approaches should enforce these properties and avoid the misbehavior of the system by skipping the execution of undesired events. Third, in current approaches the code for enforcing non-functional properties is mostly not encapsulated in separated modules. The implementation cuts across the functional application code. This lack of modularity leads to serious problems related to the quality of code and the possibility of changing those properties.
The thesis shows a generic and holistic approach, called Seven-pro that combines formal methods and aspect-oriented programming for specifying and runtime enforcing non-functional safety properties. Seven-pro covers the whole development process of non-functional properties and avoids the gap between the specification and the implementation by automatically generating aspects from a high-level specification. The generated aspects will be integrated, in a modular way, in the functional application code for enforcing the formally specified properties at runtime.
In addition, this thesis shows how Seven-pro covers different types of non-functional properties in distributed applications. This approach is applied to structural, qualitative and quantitative behavioral non-functional properties. This thesis presents three applications for the supported types of properties.
In the context of structural properties, Seven-pro is applied for specifying and enforcing architectural properties of distributed object-oriented applications that are characterized by dynamic software architectures. Seven-pro uses a combination of Z notation and Petri nets to specify (a) the architectural styles with their architectural invariants, (b) the reconfiguration operations with their pre- and post-conditions, and (c) the coordination protocols describing the execution order of the reconfiguration operations. A verification step is performed to verify the consistency of the specification and the preservation of the architectural style after a reconfiguration of the architecture. After that, the Z and Petri nets specifications are automatically translated to AspectJ aspects to verify – before each reconfiguration operation – that all related architectural properties are satisfied.
In the context of qualitative behavioral properties, Seven-pro is applied for specifying and enforcing static and dynamic separation of duties and different types and characteristics of delegation policies on top of role-based access control. In the specification phase, TemporalZ, a combination of Z notation and linear temporal logic, is used for formally specifying the supported policies. In the verification phase, the absence of contradictions between the specified policies is verified. In the implementation phase, the aspect language Alpha is extended with a new library for supporting the specified properties. In addition, TemporalZ specifications are automatically translated to Alpha aspects to control the access permissions according to the specified policies.
In the context of quantitative behavioral properties, Seven-pro is applied for specifying and enforcing temporal properties in Web service compositions. To support both relative and absolute timed properties, a new formal language called XTUS-Automata is proposed which extends timed automata with the constructs of the XTUS language. After formally verifying the absence of deadlocks in timed automata specifications and verifying other properties related to the XTUS language, the XTUS-Automata specifications are automatically translated to AO4BPEL aspects
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
The PULSE Project: A Case of Use of Big Data Uses Toward a Cohomprensive Health Vision of City Well Being
Full text linkDespite the silent effects sometimes hidden to the major audience, air pollution is becoming one of the most impactful threat to global health. Cities are the places where deaths due to air pollution are concentrated most.
In order to correctly address intervention and prevention thus is essential to assest the risk and the impacts of air pollution spatially and temporally inside the urban spaces. PULSE aims to design and build a large-scale data management system enabling real time analytics of health, behaviour and environmental data on air quality. The objective is to reduce the environmental and behavioral risk of chronic disease incidence to allow timely and evidence-driven management of epidemiological episodes linked in particular to two pathologies; asthma and type 2 diabetes in adult populations. developing a policy-making across the domains of health, environment, transport, planning in the PULSE test bed cities
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
The Impact of Digital Technologies on Public Health in Developed and Developing Countries
Full text linkThis open access book constitutes the refereed proceedings of the 18th International Conference on String Processing and Information Retrieval, ICOST 2020, held in Hammamet, Tunisia, in June 2020.* The 17 full papers and 23 short papers presented in this volume were carefully reviewed and selected from 49 submissions. They cover topics such as: IoT and AI solutions for e-health; biomedical and health informatics; behavior and activity monitoring; behavior and activity monitoring; and wellbeing technology. *This conference was held virtually due to the COVID-19 pandemic
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