1,721,131 research outputs found
Elio Lo Cascio & Giovanna D. Merola (a cura di), Forme di aggregazione nel mondo romano, (Pragmateiai, 13) 2007
No full textRaepsaet Georges. Elio Lo Cascio & Giovanna D. Merola (a cura di), Forme di aggregazione nel mondo romano, (Pragmateiai, 13) 2007. In: L'antiquité classique, Tome 80, 2011. p. 537
Romanizzazione? Attualità di una problematica storico-archeologica
No full textL’articolo contribuisce a esplorare il percorso epistemologico che ha accompagnato le fasi della ricerca calibrata sul tema della romanizzazione, evidenziando i momenti cruciali e i tornanti talora controversi legati a uno degli approcci conoscitivi e assunti storiografici più solidi e influenti pertinenti la ricostruzione e la interpretazione del mondo romano. Profondamente connesso ai contesti socio-culturali in cui è stato scolpito, formulato, impiegato e ripensato, il prisma euristico e diagnostico della romanizzazione si propone quale tetragono e interconnesso campo di confronto tra la comprensione delle fonti storiche, la disamina dei contesti archeologici, l’apporto della cultura materiale. Il contributo è pertanto strutturato in due parti: la prima, redatta da C. S. Fioriello, delinea, discute e approfondisce il volgere assai intenso e di certo problematico delle riflessioni teoriche e metodologiche più significative invalse; la seconda, curata da A. Merola, si concentra sulla storicità di questi sistemi concettuali e sulle prospettive della loro proficua rilettura e chiara applicazione in chiave di positivo sviluppo critico.The article explores the different phases of calibrated research on Romanization, highlighting the crucial moments and sometimes controversial turns related to one of the most solid and influential theoretical approaches and historiographical assumptions pertinent to the reconstruction of the Roman world. Deeply connected to the historical contexts in which it was formulated, applied, and reinterpreted, Romanization is proposed as an important and interconnected field of confrontation between the interpretation of historical sources, the examination of archaeological contexts, and the contribution of material culture. This study is structured in two parts: the first, edited by C. S. Fioriello, outlines, discusses and deepens the very intense and certainly problematic turn of the most significant theoretical and methodological reflections invalidated; the second part, edited by A. Merola, focuses on the historicity of these theories and the prospects of their fruitful reinterpretation in terms of positive critical development
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
Sufficient conditions for finite-time stability and stabilization of nonlinear quadratic systems
No full textIn this paper we deal with the finite-time stability problem for
quadratic systems. Such class of systems plays an important role in the
modeling of a wide class of nonlinear processes (electrical, robotic, biological,
etc.). The main results of the paper consist of two sufficient conditions
for finite-time stability analysis and finite-time stabilization via static state
feedback; both conditions are given in terms of the feasibility of a convex
optimization problem, involving linear matrix inequalities. A numerical example
illustrates the applicability of the proposed technique
Editorial: Innovative Technologies and Clinical Applications for Invasive and Non-invasive Neuromodulation: From the Workbench to the Bedside
Full text linkAn insight into tumor dormancy equilibrium via the analysis of its domain of attraction
No full textThe trajectories of the dynamic system which regulates the competition between the populations of
malignant cells and immune cells may tend to an asymptotically stable equilibrium in which the sizes of
these populations do not vary, which is called tumor dormancy. Especially for lower steady-state sizes of
the population of malignant cells, this equilibrium represents a desirable clinical condition since the
tumor growth is blocked. In this context, it is of mandatory importance to analyze the robustness of this
clinical favorable state of health in the face of perturbations. To this end, the paper presents an
optimization technique to determine whether an assigned rectangular region, which surrounds an
asymptotically stable equilibrium point of a quadratic systems, is included into the domain of attraction
of the equilibrium itself. The biological relevance of the application of this technique to the analysis of
tumor growth dynamics is shown on the basis of a recent quadraticmodel of the tumor–immune system
competition dynamics. Indeed the application of the proposedmethodology allows to ensure that a given
safety region, determined on the basis of clinical considerations, belongs to the domain of attraction of
the tumor blocked equilibrium; therefore for the set of perturbed initial conditions which belong to such
region, the convergence to the healthy steady state is guaranteed. The proposed methodology can also
provide an optimal strategy for cancer treatment
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
On the region of attraction of nonlinear quadratic systems
No full textQuadratic systems play an important role in the modelling of a wide class of nonlinear processes (electrical, robotic, biological, etc.). For
such systems, it is of mandatory importance not only to determine whether the origin of the state space is locally asymptotically stable but also
to ensure that the operative range is included into the convergence region of the equilibrium. Based on this observation, this paper considers
the following problem: given the zero equilibrium point of a nonlinear quadratic system, assumed to be locally asymptotically stable, and a
certain polytope in the state space containing the origin, determine whether this polytope belongs to the region of attraction of the equilibrium. The proposed algorithm requires the solution of a suitable feasibility problem involving linear matrix inequalities constraints. An example illustrates the effectiveness of the proposed procedure by exploiting a population interaction model of three species
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