1,721,103 research outputs found
Subsistencia y alimentación en arqueología. Una aproximación a las sociedades indígenas de América precolombina. M. Bonomo, F. Skarbun y L. Bastourre
No full textFil: Berón, Mónica Alejandra. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Museo Etnográfico "Juan B. Ambrosetti"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad de Buenos Aires. Instituto de las Culturas; ArgentinaBerón, M. A. (2020). Subsistencia y alimentación en arqueología. Una aproximación a las sociedades indígenas de América precolombina. M. Bonomo, F. Skarbun y L. Bastourre. Relaciones de la Sociedad Argentina de Antropología XLV (1), 231-235
A note on the Cornaz-Jost transformation to solve the graph coloring problem
No full textIn this note, we use a reduction by Cornaz and Jost from the graph (max-)coloring problem to the maximum (weighted) stable set problem in order to characterize new graph classes where the graph coloring problem and the more general max-coloring problem can be solved in polynomial time
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
Non solo per interesse. Gli industriali e il fascismo
No full textL’articolo si propone di indagare le vicende della grande imprenditoria italiana negli anni del fascismo da un punto di vista apparentemente più laterale: ponendo l’attenzione non sui comportamenti collettivi di quel gruppo sociale ma sulle parole dei singoli; non sugli aspetti economici e politici, sui vantaggi materiali derivanti dall’appoggio al regime, ma sui riferimenti ideologi, sui valori, sui convincimenti diffusi e sulle formule retoriche espresse pubblicamente e privatamente. Ripercorrendo i discorsi, le lettere, i taccuini e le pubblicazioni di alcune personalità altamente significative emerge una serie di elementi ricorrenti che consentono di abbozzare i tratti generali dell’universo culturale e ideologico della grande borghesia italiana negli anni Venti e Trenta. L’antiliberismo, l’idea dello Stato forte, il sentimento di appartenenza nazionale, il rapporto con la modernità e lo strisciante culto per la figura di un capo autorevole e indiscusso caratterizzarono l’universo ideologico e culturale della borghesia industriale italiana e, al tempo stesso, rappresentarono un retroterra comune con i sentimenti e la cultura diffusa degli “uomini nuovi” di Mussolini, capace quindi di contribuire in misura decisiva a favorire l’incontro tra ceti dirigenti economici e fascismo
Le spese per Roma capitale : dal trasferimento dei ministeri alle leggi speciali (1870-1881)
No full textOn coloring problems with local constraints
Full text linkWe deal with some generalizations of the graph coloring problem on classes
of perfect graphs. Namely we consider the -coloring problem (upper bounds
for the color on each vertex), the precoloring extension problem (a subset
of vertices colored beforehand), and a problem generalizing both of them,
the (γ,µ )-coloring problem (lower and upper bounds for the color on each
vertex). We characterize the complexity of all those problems on clique trees
of di erent heights, providing polytime algorithms for the cases that are easy.
These results have two interesting corollaries: rst, one can observe on clique
trees of di erent heights the increasing complexity of the chain k-coloring,
µ -coloring, (γ,µ )-coloring, list-coloring. Second, clique trees of height 2 are
the rst known example of a class of graphs where -coloring is polynomial
time solvable and precoloring extension is NP-complete, thus being at the
same time the rst example where -coloring is polynomially solvable and
(γ,µ )-coloring is NP-complete. Last, we show that the -coloring problem
on unit interval graphs is NP-complete. These results answer three questions
from [Ann. Oper. Res. 169(1) (2009), 3{16]
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
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