1,720,981 research outputs found
Developing Web Client Applications with JaCa-Web
No full textWe believe that agent-oriented programming lan- guages and multi-agent programming technologies provide an effective level of abstraction for tackling the design and pro- gramming of mainstream software applications, in particular those that involve the management of asynchronous events and concurrency. In this paper we support this claim in practice by discussing the use of a platform integrating two main agent programming technologies – Jason agent programming language and CArtAgO environment programming framework – to the development of Web Client applications. Following the cloud computing perspective, these kinds of applications will more and more replace desktop applications, exploiting the Web infrastructure as a common distributed operating system, raising however challenges that are not effectively tackled – we argue – by mainstream programming paradigms, such as the object- oriented one
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
Spectrum of early lung cancer presentation in low-dose screening CT : a pictorial review
Full text linkThe typical presentation of early stage lung cancers on low-dose CT screening are non-calcified pulmonary nodules. However, there is a wide spectrum of unusual focal abnormalities that can be early presentations of lung cancer. These abnormalities include, for example, cancers associated with ‘cystic airspaces’ or scar-like cancers. The detection of lung cancer with low-dose CT can be affected by the absence of intravenous contrast medium. As a consequence, endobronchial and central lesions can be difficult to recognize, raising the potential for missed cancers. Focal lesions arising within pre-existing lung disease, such as lung fibrosis or apical scars, can also be early lung cancer manifestations and deserve particular consideration as recognition of these lesions may be hindered by the underlying disease. Furthermore, the unpredictable growth rate of lung cancer, which ranges from indolent to aggressive cancers, necessitates attention to the wide spectrum of progression in lung cancer appearance on serial low-dose CT scans. In this pictorial review we discuss the spectrum of early lung cancer presentation in low-dose CT screening, highlighting typical as well as unusual radiological features and the varied growth rates of early lung cancer. Teaching Points • There is a wide spectrum of early presentations of lung cancer on LDCT. • Low radiation dose and the absence of contrast medium injection can affect lung cancer detection. • Lung cancer growth shows various behaviours, ranging from indolent to aggressive cancers. • Familiarity with LDCT technique can improve CT screening effectiveness and avoid missed diagnosis
Determinazione dei cromosomi umani in ibridi di cellule somatiche mediante polymerase chain reaction
No full textConstruction Site Design. A Systematic Approach
No full textThe paper presents a proposal coming from an applied research on the site dealing with the construction site designs that lasted several years. Having assessed some recurring lacks during the execution phase of a construction or of a recovery process, as pointed out also by several investigation reports and studies, a disciplinary reorganization has been taken into account, also considering the recent Italian regulations about the design, the execution and the management of the contracts – both public and private – and, last but not least, those concerning the health and the safety in the workplaces. Despite the legislation statements, the progressive growth of the attention in the construction sector for site design and for the health and safety planning has been in most cases approximate and, above all, it has been addressed as an “appendix” of the of the other design disciplines (architectural, structural, etc.). On the contrary is spelt out that design, organization and management of a construction site, if they are correctly set and applied, not only they cut down the injury risk, but also they improve significantly the qualitative and the economic performance of an intervention. For this reason the research has been carried out on the reorganization of the design discipline related to the construction site and states a clear identification of its structure and aims, describing its different phases, levels, systems and subject areas
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
Flexible Slider-Crank Dynamic Analysis by Means of Gauss’ Principle of Least Action
No full textIn this investigation the dynamics of a slider-crank with flexible links is analysed. Instead of the more
widely adopted Euler beam model the geometry of this mechanism suggests the use of the Timoshenko beam. In fact, as it is well known, Timoshenko beam model takes into account both shear and rotary inertia. These effects cannot be neglected in beams with short lengths compared to section dimensions.The multibody dynamics formulation is based on the floating frame of reference formulation proposed by A. A. Shabana. The Timoshenko beam model is the one deduced by Davis et al. [7]. An element of novelty is the solution of multibody dynamics equations through the use of Udwadia-Phohomsiri equation based on the Gauss’ Principle of Least Action. The numerical efficiency of this approach will be compared with the method of coordinate partitioning usually adopted in these simulations
Construction Site BIM Requirements
No full textConstruction are characterized by some overall requirements (e.g. quality, expected time and cost compliance, productivity, profitability, workers’ health and safety) to be satisfied. The necessary process to fulfil these requirements should start from the construction site design phase. The aim of the research is the implementation of construction site information in BIM models in order to support the execution phase design since the early stages of the project.
These information concern, among the others, the choice optimization of site plants and equipment (i.e. construction site facilities), during the design phase. For this purpose, the creation of a BIM database of construction site facilities is needed. Each record of the database has thus to discharge a panel of BIM construction site requirements, each of them characterized by a set of physical and operational parameters whose relationships with project information lead the choices of the site designer.
The methodology for the identification of these kind of BIM requirements has followed these steps: (i) definition of a set of information characterizing building elements/materials from a construction site point of view; (ii) construction site facilities identification and classification; (iii) first investigation in order to assess which is the adequate detail level of site plants and equipment graphic representation in order to create the above mentioned database.
A case history is presented in order to show how BIM is useful for construction site designers to optimize their work, sharing information with the other figures involved in the construction process
- …
