139,688 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
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
S. Giulia di Brescia. Gli scavi dal 1980 al 1992 : reperti preromani, romani e alto medievali
No full textContenuti:
G.P. Brogiolo, Introduzione; G. Ongaro, Il materiale preromano; E. Rizzi, La ceramica a vernice nera; F. Morandini, La ceramica a pareti sottili; C. Stella, F. Morandini, Le lucerne; S. Jorio, Le terre sigillate di produzione non africana; G. Olcese, Le ceramiche fini del periodo II e alcuni problemi aperti
nell'ambito della produzione ceramica di area padana ; S. Massa, La ceramica d'importazione africana; S. Massa, Le imitazioni di ceramiche fini da mensa tra tarda età romana e alto medioevo; B. Portulano, La ceramica invetriata; S. Massa, B. Portulano, La ceramica comune; M. Vitali, La ceramica longobarda
G. Olcese, G. Schneider, Analisi di laboratorio sulle ceramiche provenienti da S. Giulia ; B. Bruno, S. Bocchio, Le anfore da trasporto; A. Alberti, I recipienti in pietra ollare; M. Uboldi, I vetri ; M. Verità, Analisi di reperti vitrei e scarti di lavorazione di tarda età romana provenienti dagli scavi del monastero di Santa Giulia a Brescia ; S. Massa, B. Portulano, M. Vitali, I contesti della prima e piena fase longobarda ; E.A. Arslan, Le monete ; E. Castiglioni, M. Cottini, M. Rottoli, I resti botanici di Santa Giulia a Brescia; P. Baker, The vertebrate remains from the Longobard and 9th-10th c. occupations at S. Giulia, Brescia; Bibliografia; Appendici e Tavole
Representing future urban and regional scenarios for flood hazard mitigation
No full textIn this paper we analyse urban and regional growth trends by using dynamic spatial models. The objective of this approach is twofold: on the one hand to monitor sustainable development trends and on the other hand to assess flood risk in urban areas. We propose the use of future urban scenarios in order to forecast the effects of urban and regional planning policies. In the last 20 years the extent of built-up areas in Europe has increased by 20%, exceeding clearly the 6% rate of population growth over the same period. This trend contributes to unsustainable development patterns, and moreover, the exposure to natural hazards is increasing in large regions of Europe. The paper is organised in two parts. In the first part we analyse a study case in Friuli-Venezia Giulia (FVG) Region in northern Italy. We analyse several spatial indicators in the form of maps describing population growth and patterns, and the historical growth of built-up areas. Then we show the results of a dynamic spatial model for simulating land use scenarios. The model is based on a spatial dynamics bottom-up approach, and can be defined as a cellular automata (CA)-based model. Future urban scenarios are produced by taking into account several factors –e.g. land use development, population growth or spatial planning policies–. Urban simulations offer a useful approach to understanding the consequences of current spatial planning policies. Inappropriate regional and urban planning can exacerbate the negative effects of extreme hydrological processes. Good land management and planning practices, including appropriate land use and development control in flood-prone areas, represent suitable non-structural solutions to minimise flood damages. The overall effects of these measures in terms of both sustainable development and flood defence can be quantified with the proposed modelling approach. In the second part of the paper we show some preliminary results of a pilot study case. Two future simulations produced by the model were used for a flood risk assessment in Pordenone (one of the four provinces of FVG). In the last 100 years Pordenone has suffered several floods. The two major events were the heavy floods of 1966 (100-year flood event; >500 mm of rain in 36 hours) and 2002 (up to 580 mm of rain in 36 hours). The disastrous consequences of those heavy floods have shown how vulnerable this area is. The flood risk analysis is based on a hydrological hazard map for the Livenza River catchment area, provided by the regional Water Authority. That map covers most of flood hazard areas of Pordenone province. Early results of this study show that the main driving force of natural disasters damage is not only increasing flood hazard, but increasing vulnerability, mainly due to urbanisation in flood prone areas.
L. Badre, E. Capet, B. Vitale, Tell Kazel au Bronze Récent (2018)
No full textMuti Giulia. L. Badre, E. Capet, B. Vitale, Tell Kazel au Bronze Récent (2018). In: Topoi, volume 22/2, 2018. pp. 685-688
Short and Long-distance Interplay In Inclusive B->X(d) gamma Decay
No full textWe analyze the short and long distance contributions to inclusive B --> X(d) gamma decay, paying particular attention to the dependence on the Cabibbo-Kobayashi-Maskawa parameter V-td. We discuss penguin diagrams with internal u and c quarks in the framework of the effective field theory. We also estimate the size of possible long range contributions by using vector meson dominance
CKM from semileptonic B decays
No full textWe review recent progress in exclusive B → D(∗) and inclusive B → Xu semileptonic B decays
The b→sγ decay revisited
No full textIn this work we compute the leading logarithmic corrections to the b→sγ decay in a dimensional scheme which does not require any definition of the γ5 matrix. The scheme does not exhibit unconsistencies and it is therefore a vaible alternative to the 't Hooft Veltman scheme, particularly in view of the next-to-leading computation. We confirm the recent results of Ciuchini et al
Brief review on semileptonic B decays
No full textWe concisely review semileptonic B-decays, focusing on recent progress on both theoretical and experimental sides
Semileptonic decays and update
No full textWe review the status of semileptonic decays and
determinations
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