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Collaborative Repositories in Model-Driven Engineering
No full textModel- driven engineering (MDE) is increasingly used across industries to abstract designs and viewpoints. Development productivity improves owing to faster change cycles. However, many current MDE tools are suitable for drawing but won\u27t scale up. Roundtrip for maintenance, tool interoperability, and team collaboration are far from industry needs. But there\u27s a light on the horizon with a new generation of MDE tools. In this issue\u27s column, Alfonso Pierantonio and his team provide an overview of recent MDE technologies. I look forward to hearing from both readers and prospective column authors about this column and the technologies you want to know more about
Introduzione
No full textIntroduction to the Special Issue on Centri per Bambini e Famiglie.Introduzione alla sezione monografica intitolata: I Centri per Bambini e Famiglie: un\u27opportunit? per genitori e bambini nella societ? di oggi. Nella sezione compaiono i contributi elaborati nell\u27ambito del progetto di ricerca TOGETHER, e della sua estensione italiana INSIEME, presentati al seminario organizzato nell\u27ottobre 2013 a Roma, presso il CNR
Mapping and preliminary analysis of infrastructures, observation/data and human capacity building
Get PDFData collection and management, marine research infrastructures, and capacity building are fundamental to ensure that Europe benefit from knowledge and innovations possible with marine and maritime research. Over the last years, many initiatives have been launched to better coordinate the marine research infrastructures\u27 development and use at EU level with the aim to create sustainable cost-efficiency in marine and maritime data collection and management, use of the different research infrastructures, provision of appropriate capacity building services, supporting models for knowledge-based policy-decisions and development of the maritime economy. However, in Europe these initiatives have traditionally been fragmented leading to overlaps and duplication of efforts while important gaps are left unattended. The objective of this document is to report on the first phase of the CSA Oceans project: the mapping and preliminary analysis of marine research infrastructures and human capacity building.La raccolta e la gestione dei dati, le infrastrutture di ricerca marina, e lo sviluppo di competenze sono fondamentali per garantire che all\u27Europa un vantaggio derivante dalla conoscenza e dall\u27innovazione ottenibili attraverso la ricerca marina e marittima. Negli ultimi anni, molte iniziative sono state avviate per coordinare meglio lo sviluppo e l\u27utilizzo delle infrastrutture di ricerca marina a livello europeo, con l\u27obiettivo di creare un favorevole rapporto costi-benefici nella raccolta e gestione dei dati marini e marittimi, nell\u27uso delle diverse infrastrutture di ricerca, e nella fornitura di adeguati servizi di formazione e addestramento, a supporto di modelli decisionali e di sviluppo dell\u27economia marittima basati sulla conoscenza. Tuttavia, in Europa queste iniziative sono state tradizionalmente frammentate, causando la sovrapposizione e la duplicazione degli sforzi, mentre si restavano non colmate importanti lacune. L\u27obiettivo di questo documento ? quello di riferire in merito alla prima fase del progetto CSA Oceans: la mappatura e l\u27analisi preliminare delle infrastrutture di ricerca marina e lo sviluppo delle competenze
Pressure-density gradient correlations in the near-field of a transonic jet
Get PDFThe relation between pressure fluctuations and density gradients in the near-field of a jet at M=0.9 is studied in this paper. For this purpose, an experiment was performed where the density gradients were acquired with the Background Oriented Schlieren technique. This optical technique measures the virtual displacements of a background pattern when seen through the compressible flow. Simultaneously, the pressure fluctuations were measured with two microphones at 2D away from the shear layer. This signal was decomposed in sound and pseudo-sound using a wavelet based separation technique. The objective is to study the degree of correlation between these three quantities: density gradient, sound and pseudo-sound. Moreover, a cross-conditional analysis is done in order to relate intermittency events in the pressure signal with variations in the density gradient field. The results of the cross-correlation indicate that only the hydrodynamic component is correlated with the density gradients. Furthermore, the correlation is located at the end of the potential core. In addition, the results of the cross-condtional analysis show that fluctuations of the density gradient related with intermittent events in the pressure signal are mainly at the end of the potential core
Report on fitting the Italian national method for the evaluation of the ecological quality of lake waterbodies using benthic diatoms (EPI-L) in the "phytobenthos cross-GIG" intercalibration exercise
Get PDFWhen the Cross-GIG phytobenthos intercalibration exercise was carried out, there was no specific Italian national method for the evaluation of the ecological quality of lake waterbodies using benthic diatoms. It was assumed that the common intercalibration metric could be used to replace the national method. However, during the exercise itself it became evident that the common metrics was not strongly correlated to the trophic pressure in the Italian lakes. As a consequence, a new method was developed, namely EPI-L, on the basis of data collected by Environmental Agencies and Research Institutes in 80 lakes covering a long trophic gradient in both the Alpine and Mediterranean ecoregion. This reports aims to evaluate to compare the value of the class boundaries of EPI-L with those agreed in the inter-GIG intercalibration exercise following the "Instruction manual to fit new or revised national classifications to the completed IC exercise". Lake quality classification should be carried out at the biological quality element (BQE) level. However, no intercalibration exercise was carried out for the "macrophyte and phytobenthos" BQE. For this reason, this report will only deal with the phytoplankton subelement
Comparing two permanent plots in Croatia and Italy with different levels of nitrogen deposition
Get PDFA preliminary comparison between two forest plot with different N load
Learning parameterized motor skills on a humanoid robot
Get PDFWe demonstrate a sample-efficient method for constructing reusable parameterized skills that can solve fami- lies of related motor tasks. Our method uses learned policies to analyze the policy space topology and learn a set of regression models which, given a novel task, appropriately parameterizes an underlying low-level controller. By identifying the disjoint charts that compose the policy manifold, the method can separately model the qualitatively different sub-skills required for solving distinct classes of tasks. Such sub-skills are useful because they can be treated as new discrete, specialized actions by higher-level planning processes. We also propose a method for reusing seemingly unsuccessful policies as additional, valid training samples for synthesizing the skill, thus accelerating learning. We evaluate our method on a humanoid iCub robot tasked with learning to accurately throw plastic balls at parameterized target locations
Written Emotional Disclosure and Boundary Making. Minority Children Writing about Discrimination
Get PDFThe present paper explores how "written emotional disclosure", in particular writing about personal feelings and thoughts concerning discriminatory events, can represent an important opportunity for children to engage in the transformation of categorical boundaries through complex cognitive and emotional processes. In particular, the paper explores from a comparative perspective: 1) how minority and migrant children express their opinions about personal and vicarious experiences of discrimination in different cultural and social contexts; 2) how, through these writings, children develop some cognitive and emotional coping strategies to handle external categorization. At the educational level, children\u27s expressive writings can represent relevant material for educators in order to understand meanings that pupils bring with them into their classroom, as well as educational tools for children in multicultural contexts. I draw on some extracts from open-ended essays written by minority and migrant children aged 9-10 attending elementary schools in Japan and in Italy
List context effects in languages with opaque and transparent orthographies: A challenge for models of reading
Get PDFThis paper offers a review of data which show that reading is a flexible and dynamic process and that readers can exert strategic control over it. Two main hypotheses on the control of reading processes have been suggested: the route de-emphasis hypothesis and the time-criterion hypothesis. According to the former, the presence of irregular words in the list might lead to an attenuation of the non-lexical process, while the presence of non-words could trigger a de-emphasis of the lexical route. An alternative account is proposed by the time-criterion hypothesis whereby the reader sets a flexible deadline to initiate the response. According to the latter view, it is the average pronunciation difficulty of the items in the block that modulates the time-criterion for response. However, it is worth noting that the list composition has been shown to exert different effects in transparent compared to opaque orthographies, as the consistency of spelling-sound correspondences can influence the processing costs of the non-lexical pathway. In transparent orthographies, the non-lexical route is not resource demanding and can successfully contribute to the pronunciation of regular words, thus its de-emphasis could not be as useful/necessary as in opaque orthographies. The complex patterns of results from the literature on list context effects are a challenge for computational models of reading which face the problem of simulating strategic control over reading processes. Different proposals suggest a modification of parameter setting in the non-lexical route or the implementation of a new module aimed at focusing attention on the output of the more convenient pathway. Simulation data and an assessment of the models\u27 fit to the behavioral results are presented and discussed to shed light on the role of the cognitive system when reading aloud
Cortical metabolic arrangement during olfactory processing:proposal for a 18F-FDG PET/CT methodological approach
Get PDFThe aim of this article is to investigate the cortical metabolic arrangements in olfactory processing by using 18F fluorodeoxyglucose (FDG) positron emission tomography/computed tomography. Twenty-six normosmic individuals (14 women and 12 men; mean age 46.710 years) were exposed to a neutral olfactory condition (NC) and, after 1 month, to a pure olfactory condition (OC) in a relatively ecological environment, that is, outside the scanner. All the subjects were injected with 185-210 megabecquerel of 18F FDG during both stimulations. Statistical parametric mapping version 2 was used in order to assess differences between NC and OC. As a result, we found a significant higher glucose consumption during OC in the cuneus, lingual, and parahippocampal gyri, mainly in the left hemisphere. During NC, our results show a relative higher glucose metabolism in the left superior, inferior, middle, medial frontal, and orbital gyri as well as in the anterior cingulate cortex. The present investigation, performed with a widely available functional imaging clinical tool, may help to better understand the neural responses associated to olfactory processing in healthy individuals and in patients with olfactory disorders by acquiring data in an ecologic, noise-free, and resting condition in which possible cerebral activations related to unwanted attentional processes might be avoided