1,721,756 research outputs found
Palazzo di Diomede Carafa, parte II
No full texthttp://www.adsi.it/wp-content/uploads/2013/10/2013.-Palazzi-e-Ville-napoletane-2%C2%B0-Ciclo.pd
Precipitation in the Hindu-Kush Karakoram Himalaya: Observations and future scenarios
Full text linkWe study the properties of precipitation in the Hindu-Kush Karakoram
Himalaya (HKKH) region using currently available data sets. We consider
satellite rainfall estimates (Tropical Rainfall Measuring Mission),
reanalyses (ERA-Interim), gridded in situ rain gauge data (Asian
Precipitation Highly Resolved Observational Data Integration Towards
Evaluation of Water Resources, Climate Research Unit, and Global
Precipitation Climatology Centre), and a merged satellite and rain gauge
climatology (Global Precipitation Climatology Project). The data are
compared with simulation results from the global climate model EC-Earth.
All data sets, despite having different resolutions, coherently
reproduce the mean annual cycle of precipitation in the western and
eastern stretches of the HKKH. While for the Himalaya only a strong
summer precipitation signal is present, associated with the monsoon, the
data indicate that the Hindu-Kush Karakoram, which is exposed to
midlatitude ``western weather patterns{''}, receives water inputs in
winter. Time series of seasonal precipitation confirm that the various
data sets provide a consistent measurement of interannual variability
for the HKKH. The longest observational data sets indicate a
statistically significant decreasing trend in Himalaya during summer.
None of the data sets gives statistically significant precipitation
trends in Hindu-Kush Karakoram during winter. Precipitation data from
EC-Earth are in good agreement with the climatology of the observations
(rainfall distribution and seasonality). The evolution of precipitation
under two different future scenarios (RCP 4.5 and RCP 8.5) reveals an
increasing trend over the Himalaya during summer, associated with an
increase in wet extremes and daily intensity and a decrease in the
number of rainy days. Unlike the observations, the model shows an
increasing precipitation trend also in the period 1950-2009, possibly as
a result of the poor representation of aerosols in this type of GCMs.
Citation: Palazzi, E., J. von Hardenberg, and A. Provenzale (2013),
Precipitation in the Hindu-Kush Karakoram Himalaya: Observations and
future scenarios, J. Geophys. Res. Atmos., 118, 85-100, doi:
10.1029/2012JD018697
Correction to Palazzi, E.; Currò, F.; Fabiano, B. Accidental continuous releases from coal processing in semi-confined environment. Energies 2013, 6, 5003-5022
No full textLow rate releases of hazardous light gases under semi-confined geometry: A consequence based approach and case-study application
No full textAs evidenced by accident statistics, an important factor when considering the safe operation of process plants is the effective mitigation of the effects of gaseous flammable releases, either by a prevention, or a protection approach. A detailed historical analysis was performed considering accidental scenarios associated with the use and management of light gases, starting from raw data selected from FACTS database and analysed by a causal multi-layer method. Results revealed that the major part of the accidental releases involving methane, hydrogen, ethene, ammonia can be attributed to organizational or process/plant immediate causes. As expected, the most frequent scenarios following the release are fire and explosion. We focus our attention on the development of a short-cut method allowing preliminary evaluation of the maximum gaseous build-up under semi-confined conditions, limiting the effects of the fire/explosion scenario to a tolerable level. The limitations of the model that is applied to selected case-studies and require further experimental validation are critically discussed. The results of the application of the model, which can boast of being safe but not disproportionately conservative, can be set as a maximum threshold in proper designing technical measures aiming at limiting the effects to a tolerable level by protection methods, e.g. isolation, venting, suppression and containment
Foligno. I palazzi e la città dal Rinascimento al Neoclassico
No full textRecensione del volume curato da Saverio Sturm, Foligno. I palazzi e la città dal Rinascimento al Neoclassico, Quattroemme, Perugia 2020. L'articolo sottolinea il valore del patrimonio urbano e architettonico della città di Foligno riscoperto con il recupero seguito al sisma del 1997. Quell'evento traumatico ha trasformato il destino della città, che ha riscoperto la propria bellezza fatta di brani di città e di palazzi che hanno rappresentato tutti i principali stili dal medioevo all'Ottocento, esito di un fruttuoso rapporto tra committenza illuminata e architetti e costruttori di grande valore
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
Observed climate change hotspots
Full text linkWe quantify climate change hotspots from observations, taking into
account the differences in precipitation and temperature statistics
(mean, variability, and extremes) between 1981-2010 and 1951-1980. Areas
in the Amazon, the Sahel, tropical West Africa, Indonesia, and central
eastern Asia emerge as primary observed hotspots. The main contributing
factors are the global increase in mean temperatures, the
intensification of extreme hot-season occurrence in low-latitude regions
and the decrease of precipitation over central Africa. Temperature and
precipitation variability have been substantially stable over the past
decades, with only a few areas showing significant changes against the
background climate variability. The regions identified from the
observations are remarkably similar to those defined from projections of
global climate models under a business-as-usual scenario, indicating
that climate change hotspots are robust and persistent over time. These
results provide a useful background to develop global policy decisions
on adaptation and mitigation priorities over near-time horizons
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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