1,721,013 research outputs found
The identification of suitable areas for afforestation in order to reduce the potential for surface runoff in the upper and middle sectors of Buzãu catchment
No full textDeforestations, besides the global climate
change, are the main cause of the intensification of f
loods and flash
-
floods
in the latest years. Since surface runoff is the main phenomenon leading to
floods or flash
-
floods, afforestation is necessary, forest coverage being the
element that retains most of the water from precipitation. The study area,
repr
esented by the upper and middle sectors of Buzau River basin, is one of
the most affected regions of Romania by torrential phenomena. Also, the
study area was chosen due to its considerable deforestation. This paper
proposes a methodology created exclusive
ly by GIS techniques in order to
identify the areas suitable for afforestation. Thus, land cover and slope
relief were taken into account when running the GIS model. Database
processing and obtaining the final results were possible by implementing a
workfl
ow in Model Builder from ArcGIS 10.3, which can be later used as a
tool for other study areas. The results of the study highlight Balaneasa,
Bâsca Chiojdului and Sărăţel river basins, which record the highest shares
of areas suitable for afforestation
Roads exposure to blizzard phenomenon in the plain area of Buzau county (Romania)
No full textL'exposition à la tempête de neige des routes dans les plaines de Buzău. Les
plaines des Buzău represéntent unes des plus vulnérables zones au phénomène de la
tempête de neige. Cette phénomèn produit le plus grand dommage en ce qui
concerne la functionnement des routes, causant souvent leur bloc. Les plus
vulnérables routes dans cette zone, en fonction de leur importance économique, sont
les routes reliant les villes de Buzău, Râmnicu Sărat et Pogoanele avec les résidences
du comté voisin, et la route européen 85 avec la région du Moldavie. La carte de la
vulnérabilité des routes dans les plaines de Buzău montre que les routes plus exposé
sont E85 et DN 22 (entre Râmnicu Sărat et Brăila)
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
THE SNOW DRIFT POTENTIAL IN THE PLAIN AREA OF BUZĂU COUNTY
No full textThe aim of this study is to analyze and identify the most exposed areas to snowdrifts,
in case of a blizzard phenomenon, in the plain area of Buzău County. Blizzard is the
most frequently occurring climatic hazard in the study area, in the cold season, that causes the
blocking of the roads and the massive snow accumulation in th built-up areas found in the
open field or in negative relief forms. In order to identify areas with high potential snowdrifts,
the Snow Drifts Potential Index (SDPI) was defined, calculated and localized. This was
achieved in the GIS by integrating three factors, namely: the use of land, river valleys and the
surfaces exposure in the study area. Finally, the results showed that the most exposed areas to
the the snow-drift phenomenon are the built areas found in the river beds, and also those on
slopes sheltered from contact with the Carpathian. The importance of this study lies in the fact
that once established and localized the areas with high potential for snow-drifts, measures can
be taken in order to combat the disastrous effects generated by blizzards in the plains of
Buzău County
Pipera Neighborhood - Voluntari City (Romania). Problems regarding inconsistency between the residential dynamic and the street network evolution between 2002 and 2011
No full textLes problèmes de la croissance résidentielle et l'évolution du réseau
routier entre 2002 et 2011. La période de l’explosion immobilière a déterminé,
seulement en dix ans, le doublage de la surface occupée par la zone résidentielle
du quartier de Pipera. Le développement dans un rythme plus lent de la texture
de la rue a déterminé l’apparition d’une série de problèmes dans les nouveaux
quartiers de villas qui se référent surtout { l’accessibilité difficile dans cette zone,
mais aussi { l’infrastructure utilitaire. Pour représenter spatialement les zones
avec des problèmes, on a réalise, { l’aide des techniques GIS, la Carte des
discordances entre la dynamique résidentielle et celle du réseau de la rue entre
2002-2011. On a utilisé la relation de la soustraction entre l’évolution de la
densité des maisons dans dix ans et l’évolution de l’accessibilité donnée par la
texture de la rue. On a détermine l’accessibilité par le produit de la densité des
voies et la qualité de celles-ci. Les zones avec des problèmes identifiés sur le
terrain sont, surtout, les nouveaux quartiers des promoteurs immobiliers, avec
une grande densité des villas
Variations on the Author
Get PDF“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
Flash-flood potential assessment and mapping by integrating the weights-of-evidence and frequency ratio statistical methods in GIS environment – case study: Bâsca Chiojdului River catchment (Romania)
No full textAppropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Assessment of Socioeconomic Vulnerability to Floods in the Bâsca Chiojdului Catchment Area
No full textHydrological risk phenomena such as floods are among the most costly natural disasters worldwide, effects consisting of socioeconomic damages and deaths. The Bâsca Chiojdului catchment area, by its morphometric and hydrographic peculiarities, is prone to generate these hydrological risk phenomena, so there is a high vulnerability in the socioeconomic elements. This paper is focused on the identification of the main socioeconomic elements vulnerable to hydrological risk phenomena such as floods, based on the assessment of their manifestation potential. Thus, following the delimitation of areas with the highest flood occurrence potential (susceptibility to floods), major socioeconomic factors existing in the basin, considering human settlements (constructions), transport infrastructure, and agricultural areas (the most important category), were superimposed. Results showed a high vulnerability for all three exposed socioeconomic elements especially in valley sectors, of which household structures were the most vulnerable, given both their importance and the high number of areas highly exposed to floods (approximately 2,500 houses and outbuildings, out of a total of about 10,250, intersect the most susceptible area to floods in the study area)
- …
