3,109 research outputs found
An assessment of the impact of possible CAP reform scenarios on Romanian agriculture
No full textUsing a simplified model, with key-variable the prices of two different possible scenarios of CAP reform after 2013 (moderate and radical), this paper present a comparison between the price effects of implementation of each reform scenario at 2015 horizon on Romanian agriculture. This short analysis shows that, under the presented hypotheses, the net welfare effect, due to the price changes, for the selected products, is positive in both reform scenarios, yet greater in the case of the radical reform. Integrated in the large context of Romanian development, it seems that the influence of CAP reform upon agriculture and rural areas will be most likely a gradual one: an interpenetration between the two scenarios is foreseeable, starting with the moderate reform that will dominate the period around 2013, the reform measures acquiring a more radical character afterwards.CAP reform, Romania, welfare effects, Agricultural and Food Policy,
Rich, Sturmian, and trapezoidal words
No full textIn this paper we explore various interconnections between rich words, Sturmian words, and trapezoidal words. Rich words, first introduced by the second and third authors together with J. Justin and S. Widmer, constitute a new class of finite and infinite words characterized by having the maximal number of palindromic factors. Every finite Sturmian word is rich, but not conversely. Trapezoidal words were first introduced by the first author in studying the behavior of the subword complexity of finite Sturmian words. Unfortunately this property does not characterize finite Sturmian words. In this note we show that the only trapezoidal palindromes are Sturmian. More generally we show that Sturmian palindromes can be characterized either in terms of their subword complexity (the trapezoidal property) or in terms of their palindromic complexity. We also obtain a similar characterization of rich palindromes in terms of a relation between palindromic complexity and subword complexity
The Temple of Venus (Pompeii): a study of the pigments and painting techniques
No full textWe report here on a study of 57 fragments of wall painting excavated from the Temple of Venus (Pompeii). These samples were characterised by a wide range of analytical methods. Data showed that the palette is varied, although not so broad as that found in other buildings in Pompeii, and is consistent with pigments used elsewhere in Pompeii and in the Roman Empire. It is composed of: natural earths, minerals and rare artificial pigments. Paintings are made up of thin paint layers (0.01e0.10 mm thick) strongly adhering to the underlying preparation layer. Nonetheless, in some cases thicker layers (up to 0.40 mm) were recognised, often spread on other previous painting layers. Samples were also compared with the microstratigraphic criteria developed in Piovesan (2009) to distinguish wall painting techniques. This comparison demonstrated that both fresco and lime painting techniques were adopted
Shades of black: Production technology of the black slip ware from Barikot, north-western Pakistan
No full textThe archaeometric analysis of a set of potsherds of black slip ware found at the site of Barikot (Swat Valley, north-western Pakistan), dated between the Indo-Greek and the Kushan phases (middle 2nd century BCE–middle 2nd century CE), was addressed to define the provenance of this pottery and to constrain the production technology of both the ceramic body and the black external slip in terms of raw materials used and firing conditions. A multidisciplinary approach, consisting in the petrographic, mineralogical, chemical and spectroscopic (Mössbauer) analyses, was used to define possible differences between sherds archaeologically classified as grey ware, northern black polished ware and black gloss ware
Characterization Results for the Poset Based Representation of Topological Relations - I: Introduction and Models
No full text@article{DBLP:journals/informaticaSI/ForlizziN99,
author = {Luca Forlizzi and
Enrico Nardelli},
title = {Characterization Results for the Poset Based Representation
of Topological Relations - I: Introduction and Models.},
journal = {Informatica (Slovenia)},
volume = {23},
number = {2},
year = {1999},
bibsource = {DBLP, http://dblp.uni-trier.de}
Characterization Results for the Poset Based Representation of Topological Relations - II: Intersection and Union
No full text@article{DBLP:journals/informaticaSI/ForlizziN00,
author = {Luca Forlizzi and
Enrico Nardelli},
title = {Characterization Results for the Poset Based Representation
of Topological Relations - II: Intersection and Union.},
journal = {Informatica (Slovenia)},
volume = {24},
number = {1},
year = {2000},
bibsource = {DBLP, http://dblp.uni-trier.de}
A domesticação e a disseminação da feijoa (Acca sellowiana) do século XIX ao século XXI
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em História, Florianópolis, 2014.A feijoa ou goiabeira serrana (Acca sellowiana) é uma espécie frutífera nativa do planalto meridional brasileiro e do norte do Uruguai. No Brasil, a espécie se encontra principalmente nos Biomas Pampa e Mata Atlântica, mais frequentemente na fitofisionomia da Floresta Ombrófila Mista. Utilizando a metodologia da História Ambiental, a presente tese objetiva estudar o processo de domesticação, aclimatação, disseminação, os usos e a conservação da feijoa. Para alcançar tais objetivos foram utilizados diferentes tipos de fontes: relatos de viajantes, periódicos regionais, iconografia, relatórios oficiais, legislação, cartas, periódicos acadêmicos, assim também, como entrevistas. A feijoa foi introduzida e aclimatada em outros países, fora da sua área natural de ocorrência. Assim, hoje é encontrada na França, na Itália, na Rússia, na Nova Zelândia, nos Estados Unidos, em Israel e na Colômbia. Atualmente a Colômbia é o maior país exportador mundial da espécie e a Nova Zelândia, o maior produtor de subprodutos da feijoa. Durante quase todo o século XX, no Brasil, a feijoa foi pouco estudada, além de ter sofrido com o desmatamento na sua área de ocorrência natural e ameaçada pela introdução de exóticas. Com os incentivos à pesquisa, a partir da década de 1980, a fruta vem se destacando no cenário nacional, possibilitando a domesticação no seu centro de origem e diversidade e o manejo desta espécie nativa e auxiliando na conservação da floresta.Abstract : The goiabeira serrana or feijoa (Acca sellowiana) is a Brazilian southern highlands and northern Uruguay native fruit species. In Brazil, the species is found mainly in Pampa and Atlantic Forest biomes, most often in the phytophysiognomy of Araucaria Forest. Using the methodology of environmental history, this thesis aims to study the process of domestication, acclimatization, dissemination, usage and conservation of the feijoa. To achieve these objectives, different sources were used: reports of travelers, regional journals, iconography, official reports, legislation, letters, academic journals, so as interviews. The feijoa was introduced and acclimatized in other countries, outside its natural area of occurrence. Today it is found in France, Italy, Russia, New Zealand, the United States, Israel and Colombia. Currently, Colombia is the world's largest exporter of the species and New Zealand, the largest producer of feijoa products. For almost the entire twentieth century, in Brazil, the feijoa has been little studied. In addition, it has suffered from deforestation in its natural occurrence area, and threatened by the introduction of exotic plants. With research incentives from the 1980s, the fruit has been highlighted in the national scene, allowing the domestication in its center of origin and diversity and management of this native species and assisting in forest conservation
The Impact of Humidity in the Thermal Ageing of Celluloid: An Inter-Scale Investigation
No full textThe role of humidity on the ageing of celluloid is investigated by performing accelerated ageing tests on mock-up samples. At 70 °C, three levels of relative humidity (RH) are selected: 30%, 50%, and 70%. Samples are monitored for the macro- and micro- changes occurring through ageing to relate the visible modifications to the molecular ones. Infrared and Raman spectroscopy, microscopy, mass and contact angle measurements, profilometry, and colourimetry are combined for this purpose. While the ageing test at 30% RH results in a slight embrittlement of the samples and small spectral changes, the one at 50% RH induces significant modifications at the molecular level and the formation of cracks, while the one at 70% RH causes a fast deformation of the samples and the development of bubbles. Although quite diverse, such results prove to be related to the same chemical processes: denitration, chain scission, and oxidation. These occur more promptly or extensively based on humidity level, resulting in different outcomes. Beyond morphology and brittleness, macroscopic effects also involve mass loss, surface roughening, and yellowing. A possible correlation between the macro and micro modifications is present, highlighting the influence humidity has on the degradation process of celluloid
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