Search results for "amazon"
showing 10 items of 97 documents
A Lexicon-based Approach for Sentiment Classification of Amazon Books Reviews in Italian Language
2016
We present a system aimed at the automatic classification of the sentiment orientation expressed into book reviews written in Italian language. The system we have developed is found on a lexicon-based approach and uses NLP techniques in order to take into account the linguistic relation between terms in the analyzed texts. The classification of a review is based on the average sentiment strenght of its sentences, while the classification of each sentence is obtained through a parsing process inspecting, for each term, a window of previous items to detect particular combinations of elements giving inversions or variations of polarity. The score of a single word depends on all the associated …
Photochemical mineralization of terrigenous DOC to dissolved inorganic carbon in ocean
2018
When terrigenous dissolved organic carbon (tDOC) rich in chromophoric dissolved organic matter (tCDOM) enters the ocean, solar radiation mineralizes it partially into dissolved inorganic carbon (DIC). This study addresses the amount and the rates of DIC photoproduction from tDOC and the area of ocean required to photomineralize tDOC. We collected water samples from 10 major rivers, mixed them with artificial seawater, and irradiated them with simulated solar radiation to measure DIC photoproduction and the photobleaching of tCDOM. The linear relationship between DIC photoproduction and tCDOM photobleaching was used to estimate the amount of photoproduced DIC from the tCDOM fluxes of the stu…
Les Amazones com a model d´inversió social
2013
La figura de l´Amazona, singularitzada en les diverses reines que apareixen al llarg de la literatura des de l´època grega, es caracteritza per la pertanyença a un estat ginecocràtic que trenca les normes socials tant de l´Antiga Grècia com de les societats cristianes de l´Occident europeu. Normalment aquesta inversió és castigada pels autors, o bé amb la mort al combat, com a l´Antiguitat, o bé amb la derrota amorosa que les fa participar de bon grat de la societat patriarcal establerta. En tot cas, el punt de vista dels autors és força variat i també manifesta una admiració per la valentia d´aquestes dones de naturalesa indòmita, qualitat que les fa encara més atractives als ulls del sexe…
Tehniskās analīzes metožu pielietošana akciju tirgus cenas prognozēšanā
2021
Bakalaura darba temats ir “Tehniskās analīzes metožu pielietošana akciju tirgus cenas prognozēšanā”. Bakalaura darba mērķis ir izmantojot teorētiskā daļā aprakstītas tehniskās analīzes metodes, uz Nasdaq kotēto uzņēmumu akciju tirgus cenu prognozes pamatā, izstrādāt priekšlikumus investoriem par tehniskās analīzes metožu pielietošanu investēšanā. Bakalaura darbs ir veidots no ievada, divām nodaļām, secinājumiem, priekšlikumiem un literatūras saraksta. Bakalaura darba uzdevumi ir izpētes veikšana par tehniskās analīzes grafiskām un matemātiskām metodēm, Nasdaq kotēto uzņēmumu akciju tirgus cenas dinamikas analīze, izmantojot tehniskās analīzes instrumentus, akciju cenas izmaiņu prognozes vei…
Doing archaeology and working with Amazonian communities: the case of the earthen structures known as geoglyphs
2018
The project of study of earthen structures known as geoglyphs led by the universities of Valencia (Spain) and the Federal University of Acre (Rio Branco, Brazil) has different objectives but the main one, beyond, the study of the structures is the implementation of plans that allow the necessary protection of these monuments having an impact on local communities. The project pretends to move away from interventions that could be labeled as ‘neocolonialist’ and contribute to the development of archaeological activity in the state of Acre. For this, it has the collaboration of the Acrean delegation of the Instituto de Patrimonio Histórico Artístico (IPHAN), la fundación Elías Mansur de Cultur…
El encuentro de Alejandro Magno con las Amazonas y sus fuentes
2014
El episodio del encuentro de Alejandro Magno con las Amazonas aparece en casi todas las fuentes del emperador macedonio, incluso en los autores que no le dan credibilidad. Este trabajo repasa el tratamiento del episodio en las mencionadas fuentes, entre las cuales no le dan credibilidad Plutarco, Arriano y Estrabón, frente a la llamada Vulgata de Alejandro procedente de Clitarco, que incluye el griego Diodoro de Sicilia y los latinos Curcio y Justino. También aparece el episodio en época posterior en el historiador cristiano Paulo Orosio, así como en la Novela de Alejandro del Pseudo-Calístenes y sus dos traducciones al latín de Julio Valerio y del arcipreste León de Nápoles, ya en la Edad …
Riesgo de inundación de la ciudad de Iquitos, Perú
2015
<p>El presente trabajo constituye un diagnóstico aproximado sobre el riesgo de inundación de la ciudad de Iquitos. La finalidad del estudio fue identificar las áreas que presentan riesgos de inundación, en referencia al registro histórico del caudal del río Amazonas en el 2012, para establecer propuestas de gestión y ordenación territorial. La metodología empleada para la elaboración de la cartografía de riesgo se basó en el trabajo de Camarasa y Soriano (2008, 2012), como referencia para la identificación de las unidades de peligro de inundación y vulnerabilidad, a partir de las cartografías de geomorfología, uso actual del suelo, valoración económica del suelo y exposición humana.&…
African volcanic emissions influencing atmospheric aerosols over the Amazon rain forest
2018
Long-range transport (LRT) plays an important role in the Amazon rain forest by bringing in different primary and secondary aerosol particles from distant sources. The atmospheric oxidation of dimethyl sulfide (DMS), emitted from marine plankton, is considered an important sulfate source over the Amazon rain forest, with a lesser contribution from terrestrial soil and vegetation sulfur emissions. Volcanic sulfur emissions from Africa could be a source of particulate sulfate to the Amazonian atmosphere upon transatlantic transport but no observations have been published. By using satellite observations, together with ground‑based and airborne aerosol particle observations, this paper provide…
Black and brown carbon over central Amazonia: long-term aerosol measurements at the ATTO site
2018
The Amazon rainforest is a sensitive ecosystem experiencing the combined pressures of progressing deforestation and climate change. Its atmospheric conditions oscillate between biogenic and biomass burning (BB) dominated states. The Amazon further represents one of the few remaining continental places where the atmosphere approaches pristine conditions during occasional wet season episodes. The Amazon Tall Tower Observatory (ATTO) has been established in central Amazonia to investigate the complex interactions between the rainforest ecosystem and the atmosphere. Physical and chemical aerosol properties have been analyzed continuously since 2012. This paper provides an in-depth analysis of t…
Influx of African biomass burning aerosol during the Amazonian dry season through layered transatlantic transport of black carbon-rich smoke
2020
Black carbon (BC) aerosols influence the Earth's atmosphere and climate, but their microphysical properties, spatiotemporal distribution, and long-range transport are not well constrained. This study presents airborne observations of the transatlantic transport of BC-rich African biomass burning (BB) smoke into the Amazon Basin using a Single Particle Soot Photometer (SP2) as well as several complementary techniques. We base our results on observations of aerosols and trace gases off the Brazilian coast onboard the HALO (High Altitude and LOng range) research aircraft during the ACRIDICON-CHUVA campaign in September 2014. During flight AC19 over land and ocean at the northeastern coastline …