126,855 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Classification of Language Interactions
No full textContext: the presence of several languages interacting each other within the same project is an almost universal feature in software development. Earlier work shows that this interaction might be source of problems. Goal: we aim at identifying and characterizing the cross-language interactions at semantic level.% among artifacts written in different languages. Method: we took the commits of an open source project and analyzed the cross-language pairs of files occurring in the same commit to identify possible semantic interactions. We both defined a taxonomy and applied it. Result: we identify 6 categories of semantic interactions. The most common category is the one based on shared ids, the next is when an artifact provides a description of another artifact. Conclusions: the deeper knowledge of cross-language interactions represents the basis for implementing a tool supporting the management of this kind of interactions and the detection of related problems at compile time
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Bibliografia di Roma medievale e moderna. Opera postuma
No full textEdited by Enrico Celani and Guiseppe Tomassetti."Tiratura di trecento esemplari. n.129."No more published.Mode of access: Internet
Labour Law and the Utopia of the Commons
No full textThis chapter discusses the commons as a real utopia, contrasting their characteristics with the main justifications of labour law. Despite affinities being rooted in the common critique of the public-private divide, collaborative commons question the material premises and the main normative assumptions of labour law in both its individual and collective dimensions. Nonetheless, labour law scholars and the labour movement can learn a lot from the idea of justice in collaborative commons. Collaborative commons, and their grassroots normativity, are leading a renewed, more effective, and far more convincing Twenty-first-century response to problems of labour and environmental justice. A response that retraces, under modern conditions, the early forms of solidarity that unions had promoted at the onset of industrial capitalism
Thermomechanics of hydrogen storage in metallic hydrides: modeling and analysis
No full textAbstract. A thermodynamically consistent mathematical model for hydrogen adsorption in metal hydrides is proposed. Beside hydrogen diffusion, the model accounts for phase transformation accompanied by hysteresis, swelling, temperature and heat transfer, strain, and stress. We prove existence of solutions of the ensuing system of partial differential equations by a carefully-designed,semi-implicit approximation scheme. A generalization for a drift-diffusion of multi-component ionized “gas” is outlined, too
AGENT ORANGE HERBICIDES, ORGANOPHOSPHATES AND TRIAZINIC PESTICIDES ANALYSIS USING NEW ORGANIC PHASE IMMUNOSENSORS
No full textThe determination of traces of pesticides in edible oils is an important problem. In
fact several kind of pesticides are scarcely soluble in aqueous solutions, in addition
also the oily matrix is practically insoluble in aqueous solvent, therefore the
quantitative determination of these species in oily matrices has always posed a
serious problem only partially solved by such techniques as gas chromatography,
which are more suitable when employed in a laboratory than in situ. A substantial
contribution to solving this problem was the development of Organic Phase
Enzyme Electrodes (OPEEs), i.e. enzymatic electrodes capable of operating in
organic solvents [1] and that can also act in situ. One classical example is that of
inhibition OPEEs [2] to analyse different types of pesticides that are relatively
insoluble in aqueous solution, in the development of which also our team was
recently involved [3]. The drawback consists in the fact that it is often complained
that inhibition biosensors are relatively unselective also versus pesticides belonging
to different phytopharmaceutical classes. Immunosensors, on the contrary, are the
most selective biosensors. However, in the last year we developed a new organic
phase Immuno Electrode (OPIE) [4]. Using this new device, applications were
developed first of all to detect triazinic pesticides in extra virgin olive oil, obtaining
good results [4]. Therefore new applications were recently developed using the
novel OPIEs to detect other herbicides and pesticides such as 2,4-D and 2,4,5-T
(i.e. agent orange herbicides), atrazine and simazine (triazinic pesticides) and
parathion (organophosphate pesticide) both in olive and in sunflower oil. The
working conditions were studied and optimized for new OPIE in the first previous
research on the triazinic analysis containing in extra virgin olive oil [4]. For the
analysis of the same pesticides in sunflowers oil, the only condition changed was
the use of 75% V/V n-hexane/chloroform mixture, which replaced the 50% V/V
mixture of the same solvents used in the previous research [4] and employed in the
competition step of the immunological method. This was because of the better
solubility of sunflower oil in the first mixture than in the latter. For all the
pesticides studied also the values of the affinity constant were estimated on the
basis of the value of the concentration at which half of the maximum response was
obtained. kaff were found to be of the order of 106
M-1 in all cases.
[1] J. Wang, Y. Lin, Q. Chen, Analyst, 1993, 118, 277-283.
[2] J. Wang, E. Demsey, A. Eremenko, and M. R. Smyth, Anal. Chim. Acta., 1993, 279,
203-208.
[3] L. Campanella, S. Eremin, D. Lelo. E. Martini, M. Tomassetti, Sens. Act. B, Chem.,
2011, 156, 501-515.
[4] M. Tomassetti, E. Martini, L. Campanella, Electroanalysis , 2012, 24(4), 842-856The determination of traces of pesticides in edible oils is an important problem. In
fact several kind of pesticides are scarcely soluble in aqueous solutions, in addition
also the oily matrix is practically insoluble in aqueous solvent, therefore the
quantitative determination of these species in oily matrices has always posed a
serious problem only partially solved by such techniques as gas chromatography,
which are more suitable when employed in a laboratory than in situ. A substantial
contribution to solving this problem was the development of Organic Phase
Enzyme Electrodes (OPEEs), i.e. enzymatic electrodes capable of operating in
organic solvents [1] and that can also act in situ. One classical example is that of
inhibition OPEEs [2] to analyse different types of pesticides that are relatively
insoluble in aqueous solution, in the development of which also our team was
recently involved [3]. The drawback consists in the fact that it is often complained
that inhibiti
Il ruolo delle parti sociali nella fase ascendente del diritto dell'Unione europea
No full textAttraverso l’analisi di un caso studio, gli AA. mettono in evidenza la opportunità per le parti sociali a livello nazionale di guardare con favore allo sviluppo del dialogo sociale europeo, in quanto strumento privilegiato che consente loro di partecipare in modo diretto alla fase ascendente del diritto dell’Unione europea e di concorrere alla formazione della politica sociale europea. L’analisi si concentra sul dialogo sociale europeo nel settore ferroviario e, in particolare, sul processo che ha condotto alla emanazione della direttiva 2005/47/CE recante l’accordo CER-ETF, concernente taluni aspetti dell’orario di lavoro dei lavoratori mobili delle ferrovie addetti a servizi di interoperabilità transfrontaliera, soffermandosi sulle cause del tardivo recepimento della direttiva in Italia. Il caso italiano, a dimostrazione della tesi sostenuta dagli Autori, mostra come le parti sociali nazionali avrebbero potuto intervenire preventivamente, attraverso le procedure di dialogo sociale europeo, sui contenuti dell’accordo trasposto nella direttiva 2005/47/CE anziché ostacolarne il recepimento.Drawing on a case study, this paper points out how social partners at national level welcome European social dialogue, as a means for contributing to the development of EU Law and promote a European social policy. The analysis sets its sights on European social dialogue in the railway sector, more specifically to the run-up to adoption of Directive 2005/47/CE which includes the CER-ETF agreement dealing with working time of mobile workers engaged in interoperable cross-border services. In this sense, the late transposition of the Directive into Italian law is considered. The Italian case upholds the arguments put forward by a number of authors that social partners at a national level should have taken early action rather than hampering its transposition, particularly with regard to the contents of the Directive
Maturity of Software Modelling and Model Driven Engineering: a Survey in the Italian Industry
No full textBackground: The main claimed advantage of Model-driven engineering is improvement in productivity. However, few information is available about its actual adoption during software development and maintenance in the industry. Objective: The main aim of this work is investigating the level of maturity in the adoption of software models and of Model-driven engineering in the Italian industry. The perspective is that of software engineering researchers. Method: First, we conducted an exploratory personal opinion survey with 155 Italian software professionals. The data were collected with the help of a web-based on-line questionnaire. Then, we conducted focused interviews with three software professionals to interpret doubtful results. Results: Software modelling is a very relevant phenomenon in the Italian industry. Model-Driven techniques are used in the industry, even if (i) only for a limited extent, (ii) despite a quite generalized dissatisfaction about available tools and (iii) despite a generally low experience of the IT personnel in such techniques. Limitations: Generalization of results is limited due to the sample size. Moreover, possible self-exclusion from participants not interested in modelling could have biased the results. Conclusion: Results reinforce existing evidence regarding the usage of software modelling and (partially of) Model-driven engineering in the industry but highlight several aspects of immaturity of the Italian industr
A model-based approach to language integration
No full textThe interactions of several languages within a soft- ware system pose a number of problems. There is several anecdotal and empirical evidence supporting such concerns. This paper presents a solution to achieve proper language integration in the context of language workbenches and with limited effort. A simple example is presented to show how cross- language constraints can be addressed and the quality of the support attainable, which covers error-checking and refactoring. A research agenda is then presented, to support future work in the area of language integration, taking advantage of modern language workbenches features
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