324,438 research outputs found
Variabilità tecnologica in due insiemi litici di superficie dei Colli Berici
No full textInquadramento geografico e geomorfologico e descrizione tecno-tipologica dei rinvenimenti musteriani di superficie rinvenuti da Bertola S. e Frison L. nei colli di Sossan
Industrie litiche dal territorio di Montecchio Maggiore (Vicenza). B. La provenienza delle selci
No full textNei dintorni di Alte Ceccato (Montecchio Maggiore, Vicenza) alcuni appassionati locali, grazie ai lavori agricoli, hanno individuato nella campagna ai piedi della collina delle concentrazioni di manufatti litici. Le raccolte di superficie sono procedute per anni e senza sistematicità, c’è la forte probabilità che gli insiemi litici non siano omogenei e che siano mescolati più record archeologici. Dal punto di vista tipologico le industrie sono attribuibili al tardoneolitico - eneolitico. Le tre aree di maggiore concentrazione dei manufatti sono 1- Località S. Giacomo (643 manufatti); 2- Proprietà Beschin/Groppo (424 manufatti) e 3- Località I.B.A. (100 manufatti). Le tre località
distano circa 1,5 km una dall’altra e sono poste ai vertici di un ipotetico triangolo equilatero.
In questo lavoro vengono descritti e studiati i differenti tipi di selce utilizzati in ciacuna delle tre concentrazioni al fine di individuare le possibili aree di approvvigionamento e di ricostruire gli ipotetici spostamenti dei materiali. La gamma delle materie prime utilizzate nelle diverse concentrazioni è sostanzialmente la medesima. Le selci, con poche eccezioni, provengono dal settore centro occidentale dei Lessini. L’analisi ha evidenziato la scelta preferenziale di determinati litotipi per la scheggiatura dei diversi supporti (schegge, lame, lamelle). Quest’ultimi sono presenti nei diversi siti con percentuali molto diverse. Resta da chiarire se si tratta di un dato attendibile o se sia fortemente condizionato dalla parzialità del campione.In the neighborood of Alte Ceccato (Montecchio Maggiore - Vicenza), some local non professional researchers found at the foothills some lithic artifacts concentrations brought to the light by agricultural works. Such surface findings have been going on for years without a specific project and therefore it’s quite likely that these lithic specimens are not homogeneous, belonging to different archeological cultures or phases (palimpsests). From the typologic point of view the industries can be dated to Late Neolithic or Eneolithic. The three areas in which the artifacts were more concentrated are: I- San Giacomo (643 items): 2 - Beschin/Groppo farm (424 items) and 3 - I.B.A . (100) items. These three places are distant about 1,5 kms from each other, and are placed at the tips of an hypothetical equilateral triangle. This work describes and studies the different types of flints found in each of the three concentrations, so as to delimit the possible supply areas and trace the hypothetical movements of the materials. The variety of the raw materials used in the three concentrations is essentiailly the same. Flints, with few exceptions, came from the central-western part of the Lessini hills. Analises hihlights the preferential selection of high quality determined litotypes for chipping different items (flakes, blades, bladelets). The lithotypes are represented with largely variable percentages in the different sites. It remains to be ascertained whether these data are reliable or if it's strongly conditioned by the partiality of the samples
La metodologia e le categorie interpretative
No full textDRM_Design Research Maps, presenta gli esiti della prima indagine sistematica a livello nazionale sul sistema della ricerca universitaria in design. Il fenomeno della ricerca in design viene rilevato e analizzato attraverso un’analisi quantitativa e qualitativa e presentato attraverso una originale traduzione infografica, l’atlante delle mappe, che racconta in maniera sintetica e innovativa i differeanti livelli interpretativi: gli attori, la natura delle attività svolte, il livello di azione, i risultati conseguiti, le aree e i temi di ricerca più praticati. A questo si aggiunge una serie di saggi, le geografie della ricerca, che raccontano l’evoluzione del sistema da una prospettiva storica integrandola con la descrizione degli approcci e degli ambiti di ricerca sviluppati e dei i progetti realizzati. Il racconto si completa con le storie della ricerca, dove vengono presentati una serie di casi studio che illustrano cosa fa in concreto la ricerca in design, descrivendo l’estensione del campo d’azione di questa disciplina, le sue potenzialità e le possibili ricadute a livello sociale ed economico delle sue attività
Labour Markets in EMU - What has changed and what needs to change
No full textThis paper reviews theoretical and empirical aspects of the interaction between Europe's Economic and Monetary Union and recent labour market developments. Policies meant to increase and stabilize labour incomes also tend to reduce employment and productivity, theory suggests that the latter effects should be sharper and more relevant within an integrated market area, making it harder for National policy makers to address the consequences of financial and other market imperfections. Empirical patterns of policy and outcome indicators in member and non-member countries of EMU are consistent with that theoretical mechanism. In the data, tighter economic integration is associated with better employment performance, substantial deregulation, sharper disemployment effects of remaining regulatory differences, and somewhat higher inequality and larger private financial market volume..labour market, monetary union, unemployment, employment, labour income, Bertola
Le materie prime
No full textAbstract
The chapter introduces issues regarding the subject of this research. To the description of the geographical framework of the
area under study, there follows the presentation of the climate and vegetation of the Alpine area during the Quaternary, as well
as the chronological and cultural setting of the prehistoric periods under consideration: Mesolithic, Neolithic and Chalcolithic.
The Mont Fallère area, where the research was conducted, is located in the heart of the north-western Alps. In general, the
Quaternary recorded numerous climatic oscillations which are detectable by studying the proxies stored in terrestrial and
marine stratigraphic successions, which provide tools for the reconstruction of the history of the climate and its eff ects on
plant and animal communities over the geological periods. Among the existing proxy records, the palaeoecological one
is a fundamental archive of the history of climate and of the landscape at local, non-local and regional levels. Numerous
palaeoecological records, supported by 14C dating, are available for northern Italy and document environmental changes
that occurred starting from the fi nal phases of the last glaciation, which can be regarded as resulting from natural climate
variability and human pressure. Beginning with the treeless steppes at the start of the Late Glacial, an articulated sequence
of migrations and expansions, extinctions and introductions of new plant species, have led to the strongly anthropized
environments of the historical period.
From a chronological and cultural perspective, the archaeological remains that testify to the Mesolithic population in the
north-western Alps are distributed unevenly: from areas with a large number of sites, there are others which preserve few
archaeological remains. In detail, at the beginning of the Holocene, there are multiple archaeological sites discovered in
Switzerland, especially on the margins of the alpine massif, just like in the Savoy Prealps where a precocious ancient
Mesolithic can be found, while in the second half of the Boreal, the region is part of the Sauveterrian cultural current. In
north-western Italy, research has revealed the presence of high altitude sites: near the Splügen Pass on the border with
Switzerland, during the Preboreal; at Dosso Gavia in upper Valtellina, at Cianciavero in the Alpe Veglia basin and at Mont
Fallère in Valle d’Aosta, over the fi rst part of the Holocene. From the early centuries of the eighth millennium BP, the
north-western sector of the Alps plays an active part in the progressive spread of lithic technology orientated towards the
production of regular and standardized blades/bladelets, which characterize the recent Mesolithic.
As found in the Mesolithic period, even in the Neolithic the north-western Alps are characterized by a marked heterogeneity
of data. The most important gaps in documentation include the Alpine regions of the western sector, excluding the
canton of Valais: the inner massifs and valleys of the French and Italian Alps are mostly unknown from the point of view
of their population. The neolithization of the French Pre-Alps, of Northern Italy and of the upper Rhone basin (Valais) is
expressed in the cultural complex of the Impressed Ware that characterizes the early Neolithic of the Western Mediterranean.
In the Middle Neolithic, relations between the two sides of the Alps are well documented. In particular, in the MN
I (Italian Middle Neolithic) Ligurian and Po valley infl uences occur, albeit in moderate amounts, in the Rhone basin and
in Provence, while during MN II (Italian Late Neolithic) an inversion in the trend and a certain “cultural” complexity can
be observed: in the last quarter of the V millennium cal. B.C., a Chasséen presence is attested in Liguria and Piedmont,
which tends to spread slowly towards northern Italy. These transalpine contacts are also highlighted by the presence of
characteristic burials called Chamblandes, found in a geographical area corresponding to the north-western sector of the
Alps (Valle d’Aosta, Tarentaise, upper basin of the French Rhone, Plateau Suisse) between the fi rst half of the V millennium
cal. B.C. and the beginning of the IV millennium cal. B.C.
The Chalcolithic (IV millennium cal. B.C. - III millennium cal. B.C.) is characterized by a material culture that refl ects the
existence of cultural movements and far-reaching exchanges. During this phase (corresponding to the French and Swiss late
Neolithic), the Alps do not seem to have been a barrier to human movement. On a strictly ideological level, attested ritual
and funerary practices testify to the presence of common ideas and show a renewed concept of the living world which is
expressed through the raising of anthropomorphic stelae and the construction of collective burials. The distinction between
individuals (males) observed in the presence of weapons (as grave goods or as representations) is another common trait:
the copper or fl int daggers placed in the individual graves at Remedello and Spilamberto; the representations of weapons
engraved on the stele and generally present in rock engravings; a large number of derivative or imitated daggers in the
settlement sites along the shores of the transalpine lakes and in the collective burials of the Rhone basin. Moreover, from
a purely Alpine perspective, a clear relationship between the regions is recognized due to their architectural, iconographic
and ritual convergence, also highlighted by the extraordinary similarity between the megalithic area of Aosta and the site of
Petit-Chasseur in Sion, in the canton of Valais, and by the grave goods found in three burials discovered in Fontaine-le-Puits
in Tarentaise, where a clear infl uence of Remedello has been shown extending all the way up to the Savoy Alpine territories
Moïse ben Maimoun, Le Guide des Égarés. Traité de théologie et de philosophie. Trad. S. Munk. Réédition photomécanique
No full textLabande-Mailfert Yvonne, Bertola Ermenegildo. Moïse ben Maimoun, Le Guide des Égarés. Traité de théologie et de philosophie. Trad. S. Munk. Réédition photomécanique. In: Cahiers de civilisation médiévale, 17e année (n°67), Juillet-septembre 1974. pp. 267-268
First Colonization of a Spectral Outpost in Random Matrix Theory
No full textWe describe the distribution of the first finite number of eigenvalues in a newly-forming band of the spectrum of the random Hermitean matrix model. The method is rigorously based on the Riemann-Hilbert analysis of the corresponding orthogonal polynomials. We provide an analysis with an error term of order N^(-2 h) where 1/h = 2 nu+2 is the exponent of non-regularity of the effective potential, thus improving even in the usual case the analysis of the pertinent literature. The behavior of the first finite number of zeroes (eigenvalues) appearing in the new band is analyzed and connected with the location of the zeroes of certain Freud polynomials. In general all these newborn zeroes approach the point of nonregularity at the rate N^(-h) whereas one (a stray zero) lags behind at a slower rate of approach. The kernels for the correlator functions in the scaling coordinate near the emerging band are provided together with the subleading term: in particular the transition between K and K+1 eigenvalues is analyzed in detail
First Colonization of a Hard-Edge in Random Matrix Theory
No full textWe describe the spectral statistics of the first finite number of eigenvalues in a newly-forming band on the hard-edge of the spectrum of a random Hermitean matrix model. It is found that in a suitable scaling regime, they are described by the same spectral statistics of a finite-size Laguerre-type matrix model. The method is rigorously based on the Riemann-Hilbert analysis of the corresponding orthogonal polynomials
The Dependence on the Monodromy Data of the Isomonodromic Tau Function
No full textThe isomonodromic tau function defined by Jimbo-Miwa-Ueno vanishes on the Malgrange's divisor of generalized monodromy data for which a vector bundle is nontrivial, or, which is the same, a certain Riemann-Hilbert problem has no solution. In their original work, Jimbo, Miwa, Ueno provided an algebraic construction of its derivatives with respect to isomonodromic times. However the dependence on the (generalized) monodromy data (i.e. monodromy representation and Stokes' parameters) was not derived. We fill the gap by providing a (simpler and more general) description in which all the parameters of the problem (monodromy-changing and monodromy-preserving) are dealt with at the same level. We thus provide variational formul' for the isomonodromic tau function with respect to the (generalized) monodromy data. The construction applies more generally: given any (sufficiently well-behaved) family of Riemann-Hilbert problems (RHP) where the jump matrices depend arbitrarily on deformation parameters, we can construct a one-form Omega (not necessarily closed) on the deformation space (Malgrange's differential), defined off Malgrange's divisor. We then introduce the notion of discrete Schlesinger transformation: it means that we allow the solution of the RHP to have poles (or zeros) at prescribed point(s). Even if Omega is not closed, its difference evaluated along the original solution and the transformed one, is shown to be the logarithmic differential (on the deformation space) of a function. As a function of the position of the points of the Schlesinger transformation, it yields a natural generalization of the Sato formula for the Baker-Akhiezer vector even in the absence of a tau function, and it realizes the solution of the RHP as such BA vector. Some exemplifications in the setting of the Painlev, II equation and finite Toplitz/Hankel determinants are provided
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