1,721,058 research outputs found
Real Time Detection of Stopped Vehicles in Traffic Scenes
No full textComputer vision techniques are widely employed in Traffic
Monitoring Systems (TMS) to automatically derive statistical
information on traffic flow and trigger alarms on significant
events. Research in this field embraces a wide range
of methods developed to recognize moving objects and to
infer their behavior. Tracking systems are used to reconstruct
trajectories of moving objects detected often by using
background difference approaches. Errors in either motion
detection or tracking can perturb the position of the object
centroids used to build the trajectories. To cope with the
unavoidable errors, we have conceived a method to detect
centers of stability through recognizing short stability intervals.
These are further connected to build the long stability
interval used to measure the overall vehicle stopping
time. Extensive experiments also accomplished on the sequences
provided by AVSS 2007 prove the effectiveness of
our approach to measure the maximum stopped delay, even
through a comparison with the ground truth
M. Renna, S. Vaccari, Raggruppamenti temporanei di imprese e avvalimento: relazioni giuridiche e principali criticità
No full textTemporary groupings of companies and pooling: juridical relations and main critical areas
The purpose of this contribution is to study the legal relationships between the institutions of the temporary grouping of companies and of pooling, both aimed at encouraging the maximum participation of economic operators in public proceedings.
To this end, the proposed classification is based on ‘accumulation’ and ‘alternation’ schemes, with the aim of highlighting the different relationships of competition or convergence that may characterise the two instruments of cooperation between enterprises.
Once the above distinction has been drawn, the analysis will focus on the main critical issues affecting the case of recourse to the use of grouped enterprises. Particular attention will be paid to the internal and external figures in the pooling of the group, as well as
to some issues of ‘form’ within the more general theoretical distinction between ‘pooled contracts’ and ‘pooled results’
S. Vaccari, The Problems Of Res Judicata In The Italian Administrative Justice System, in I.J.P.L., 2019, I, pagg. 223 ss.
No full textThe aim of this paper is to study ‘res judicata’ in the Italian administrative justice system. After providing an overview of some essential concepts of the general theory of proceedings, the paper seeks to conduct a critical analysis of the main solutions developed by legal commentators and in administrative case-law, highlighting the various issues raised in the national legal debate. The objective of the paper is to set forth a new concept of administrative res judicata – defined as having a “stabilising entitlement” – that is more consistent with the values of full, effective and stable procedural protection underpinning the current system governed by the Code of Administrative Proceedings (Italian Legislative Decree No 104/2010)
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
La regolazione del servizio idrico tra esigenze di integrità dell’ambiente, efficienza del sistema e protezione delle generazioni future
No full textVariations 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
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