|
|
|
Registros recuperados: 41 | |
|
|
Carmo,Renato Miguel do. |
Em Portugal, as ciências sociais têm estudado a agricultura familiar a partir de um modelo de interpretação dualista que acentua as diferenças inter-regionais, marginalizando, até certo ponto, o significado sociológico de algumas continuidades que se estabeleciam (e se estabelecem) entre as zonas do Norte e do Sul ou entre o Litoral e o Interior. O presente estudo pretende, assim, construir uma perspectiva diferente sobre as modalidades de agricultura familiar em Portugal, procurando identificar, num primeiro momento, uma série de proximidades sociológicas entre os diferentes modos de organização (tradicionais e modernos) das famílias agrícolas e, consequentemente, traçar os eixos para um modelo mais complexo na análise dessas mesmas modalidades. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rural; Pluriactividade; Agricultura familiar; Portugal. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032010000100001 |
| |
|
| |
|
| |
|
| |
|
|
PANISSET,JESSICA; DACAMARA,CARLOS C.; LIBONATI,RENATA; PERES,LEONARDO F.; CALADO,TERESA J.; BARROS,ANA. |
ABSTRACT An automated procedure is here presented that allows identifying and dating burned areas in Portugal using values of daily reflectance from near-infrared and middle-infrared bands, as obtained from the MODIS instrument. The algorithm detects persistent changes in monthly composites of the so-called (V,W) Burn-Sensitive Index and the day of maximum change in daily time series of W is in turn identified as the day of the burning event. The procedure is tested for 2005, the second worst fire season ever recorded in Portugal. Comparison between the obtained burned area map and the reference derived from Landsat imagery resulted in a Proportion Correct of 95.6%. Despite being applied only to the months of August and September, the algorithm is able to... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Burned area; MODIS; Portugal; Remote sensing. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401487 |
| |
|
|
Alves, Filipe M; Center for Ecology, Evolution and Environmental Changes (CE3C), University of Lisbon; fmalves@fc.ul.pt; Truninger, Monica; Institute of Social Sciences, University of Lisbon; monica.truninger@ics.ulisboa.pt; Penha-Lopes, Gil; Center for Ecology, Evolution and Environmental Changes (CE3C), University of Lisbon; gppenha-lopes@fc.ul.pt. |
Climate change may be a game-changer for scientific research by promoting a science that is grounded in linking the production of knowledge and societal action in a transition toward more sustainable development pathways. Here, we discuss participatory action-research (PAR) as a way of thinking and leading investigations that may promote incremental and transformative changes in the context of climate change adaptation research. Our exploration is addressed in the Portuguese context, where PAR and sustainable transition studies are still marginal, and adaptation processes are a recent topic on political agendas. We describe the characteristics of PAR and use two studies of adaptation to illustrate how research and practice co-evolve through interactive... |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptation; Participatory action-research; Portugal; Transitions. |
Ano: 2016 |
|
| |
|
| |
|
| |
|
| |
|
|
Ventura-Lucas, Maria Raquel. |
The recent food crises and its great diffusion through the media had as consequence a reduction of the European consumer's confidence, in general, and of the Portuguese ones in particular, in the products that they buy and consume. These events also served to disclose some of the existing problems in the current marketing chain, in which many sectors result to have low, or no transparency or unknown ones to the consumers. For moreover, these crises had demonstrated that science and technology, in set with the governmental regulation do not offer guarantees that the risks associated with food have acceptable levels. All these questions triggered the interest of researchers to study the impact of food safety related issues on consumer behaviour. The... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Food safety; Consumer behaviour; Perceptions; Attitudes; Portugal; Food Consumption/Nutrition/Food Safety. |
Ano: 2004 |
URL: http://purl.umn.edu/24986 |
| |
|
| |
|
|
Cabral,Ana C.; Moura-Ramos,Mariana; Castel-Branco,Margarida; Caramona,Margarida; Fernandez-Llimos,Fernando; Figueiredo,Isabel V.. |
ABSTRACT We aim to validate a European-Portuguese version of the Hypertension Knowledge Test (HKT) questionnaire and examine its factorial structure with a confirmatory factor analysis (CFA). A process of translation and back-translation was performed. A cross-sectional study was developed in which all adult patients taking at least one antihypertensive drug were invited to participate. Data on personal and family history were collected, and the HKT, Strelec, and the Batalla questionnaires were administered. We enrolled 304 patients with a mean age of 68.12±10.83 years. The mean score of HKT was 15.33±2.79. CFA indicated that the construct being tested was unidimensional, and Cronbach’s alpha (α=0.65) showed that the instrument had an acceptable internal... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Health Knowledge/attitudes/practice; Hypertension/prevention and control; Psychometrics; Surveys and questionnaires/standards; Portugal. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400608 |
| |
|
| |
|
|
Gittenberger, E.. |
Next to the wide-spread Candidula gigaxii (Pfeiffer, 1848) and C. intersecta (Poiret, 1801), four endemic Candidula species are reported from Portugal and characterized conchologically, viz. C. belemensis (Servain, 1880) (provisionally), C. codia (Bourguignat, 1859), C. olisippensis (Servain, 1880) and C. setubalensis (Pfeiffer, 1850). Several nominal taxa are classified in the synonymy of these six species, after topotypes (that might be syntypes) or lectotypes. |
Tipo: Article / Letter to the editor |
Palavras-chave: Hygromiidae; Candidula; Taxonomy; Portugal; 42.73. |
Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/319316 |
| |
|
| |
|
| |
|
|
Paillard, Michel; Prevosto, Marc; Barstow, Sf; Soares, Cg. |
The MAST II WAVEMOD Project aimed at improving stochastic modelling of ocean waves and currents in coastal waters. In order to supplement existing data, two measurement campaigns were carried our, one on the Atlantic coast of Portugal, and, secondly, on the northern coast of Crete in the Mediterranean. The Portuguese measurements covered 7 months during winter 1993-1994, while off Crete, measurements started early in February 1994 and continued for 10 months, In both sites, two directional Waveriders and one non-directional Waverider were deployed along a transect our from the coast in water depths between 10 and 100 m. In addition, the Mediterranean site also incorporated measurements of mean current velocities. Available satellite data were analysed to... |
Tipo: Text |
Palavras-chave: Waves; Currents; Portugal; Greece. |
Ano: 2000 |
URL: https://archimer.ifremer.fr/doc/00000/10506/66722.pdf |
| |
|
| |
|
| |
|
|
Marques, João Carlos; Bellan-Santini, Denise. |
Amphipods from the Portuguese south and south-western continental shelf were studied with regard to the species inventory, distribution, and ecology. This study allowed the identification of 113 species, belonging to 52 genera; of these species 28 are recorded for the first time along the Portuguese coast. Two species, Ampelisca heterodactyla Schellenberg, 1925, and A. latifrons Schellenberg, 1925, are redescribed. The latter is different from the Ampelisca named latifrons by Ledoyer in 1972 and 1982. The absolute frequencies and abundances of the species, and their distribution in terms of bathymetry and type of substrate are also analysed. The most frequent and abundant species also presented wide ranges of vertical distribution. In addition, these... |
Tipo: Article / Letter to the editor |
Palavras-chave: Gammaridea; Caprellidea; Taxonomy; Distribution; Ecology; Portugal. |
Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/504578 |
| |
Registros recuperados: 41 | |
|
|
|