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OALib Journal期刊

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Agricultura biológica e fertiliza??o
Santos,Joaquim Quelhas dos;
Revista de Ciências Agrárias , 2012,
Abstract: taking in account the present level of knowledge, it doesn’t seem to be correct to interdict the use of some production factors, namely mineral fertilizers, in the so called biologic agriculture. in fact, it is easy to prove that mineral fertilizers have a decisive contribution to increase the production without environmental damage in atmosphere, soils, waters and agricultural products. it is so, if mineral fertilizers are correctly used, which means how much, what kind, when and how to use them in order to satisfy the plant needs and characteristic of the local soil and climate conditions. in fact, it is perfectly acceptable that in terms of some aspects of sanitary quality, the so called biologic products can be more dangerous then same products obtained by traditional agriculture.
Agricultura biológica e fertiliza o Biologic agriculture and fertilisation
Joaquim Quelhas dos Santos
Revista de Ciências Agrárias , 2012,
Abstract: Com base nos conhecimentos atuais, n o pode considerar-se aceitável que na agricultura dita biológica esteja interdito o uso de determinados fatores de produ o, nomeadamente dos adubos de síntese mineral. Efetivamente, é fácil demonstrar que quando estes adubos forem corretamente usados, isto é, em termos de quantidade, qualidade, épocas e técnica de aplica o mais adequadas às características da cultura e do condicionalismo agroclimático em que está, ou vai ser, instalada, ir o contribuir para que as produ es sejam mais elevadas sem que, para isso, tenham de causar agress es ambientais em rela o á atmosfera, ao solo, às águas, e aos produtos vegetais. Aliás, quanto a estes últimos, é mesmo de admitir que, em rela o a alguns aspetos da qualidade sanitária, certos produtos ditos biológicos sejam mais desfavoráveis do que quando obtidos na agricultura tradicional. Taking in account the present level of knowledge, it doesn’t seem to be correct to interdict the use of some production factors, namely mineral fertilizers, in the so called biologic agriculture. In fact, it is easy to prove that mineral fertilizers have a decisive contribution to increase the production without environmental damage in atmosphere, soils, waters and agricultural products. It is so, if mineral fertilizers are correctly used, which means how much, what kind, when and how to use them in order to satisfy the plant needs and characteristic of the local soil and climate conditions. In fact, it is perfectly acceptable that in terms of some aspects of sanitary quality, the so called biologic products can be more dangerous then same products obtained by traditional agriculture.
O efeito de ordem temporal no pensamento contrafactual das crian?as
Rasga,Célia; Quelhas,Ana Cristina;
Análise Psicológica , 2009,
Abstract: when adults think in a counterfactual way, about what might have been different in a random sequence of events, such as in the case of a cointossing game (heads or tails), they are influenced by the order in which these events take place, showing an effect of temporal order and thus attribute emotions, such as guilt (in the case of loss), to the last player. in this context we will present two experiments. in a first experiment we studied if the temporal order effect occurred in children, as well as the emotional judgments of sadness and guilt caused by this effect. and, moreover, we also wanted to know if this can be eliminated, as occurs in adults when the game is interrupted and then restarts from the beginning. we found that the effect of temporal order happens from 6 years old, but its reduction/elimination occurs only to 10 years of age, as expected, given the increased representational capacity of these children comparing to the younger. at the level of emotional trials, they differed over the ages. in a second experiment, we studied if the temporal order effect would take place in the children when of a positive result, as well as the emotional judgements of happiness and pride. we found that from early the children also show an effect of temporal order for beneficial results. at the level of the emotional judgments, this seems congruent with the temporal order effect. these results will be discussed in terms of his implications for the understanding of the development of the mental representations.
Raciocínio contrafactual e modelos mentais
Byrne,Ruth M. J.; Quelhas,Ana Cristina;
Análise Psicológica , 1999,
Abstract: the central idea in this study is that ?... thinking about matters of fact and thinking about matters of possibility and impossibility are based on similar sorts of mental representations and cognitive processes? (byrne, 1997, p. 107). that is to say that people reason by constructing and revising mental models (e.g., johnson-laird, & byrne, 1991). counterfactual conditionals require reasoners to keep in mind not only what is presupposed to be true, but also what is suppositionally true but factually false (byrne, 1997, p. 117; cf. johnson-laird, & byrne, 1991, pp. 72-73). and the hypothesis that the initial representation of a counterfactual conditional is more explicit than the initial representation of a factual conditional, allows the prediction that modus tollens and denial of the antecedent inferences would be made more frequently from the counterfactual than from the factual conditionals. byrne and tasso (in press) found evidence for those predictions. in the present study, we look for replication of the data found by byrne and tasso, and we add some hypothesis related with the latencies to understand both kinds of conditionals, and to choose a conclusion. we use neutral conditionals like ?if there was a circle, then there was a triangle?, and we presented to participants the four conditional syllogisms in the superlab program.
Raciocínio de?ntico em reclusos
Quelhas,Ana Cristina; Guerreiro,Jo?o;
Análise Psicológica , 2010,
Abstract: within the mental model theory (johnson-laird, 1983, 2006; johnson-laird & byrne, 1991), there has been an effort to account for the modulation processes (semantic and pragmatic) involved in conditional reasoning (johnson-laird & byrne, 2002; quelhas & byrne, 2003; quelhas & johnson-laird, 2004, 2005; quelhas, johnson-laird, & juhos, 2010). the present study explores these same processes, envisaging the role of pragmatic modulation as a result of knowledge associated with certain life experiences. a sample of individuals sentenced to imprisonment were selected, and asked to evaluate and reason from a set of deontic conditional sentences (e.g., if a young man can vote, then he has to be at least 18 years old). for the control group, individuals with no previous contact with the legal system were selected. results corroborate the effects of semantic modulation, i.e., conditional sentences of the same form (if p, then q) but of different content are differently interpreted. this means that a set of different possibilities are considered congruent by our participants according to the conditional sentences that were presented. furthermore, individuals seemed to represent different mental models depending on the content of the conditional sentence and, therefore, show distinct inferential patterns in a conditional reasoning task. however, as far as pragmatic modulation is concerned, no differences were detected. inmates interpret deontic sentences similarly to the control group, and also show the same inferential patterns, with no differences in a moral reasoning task.
A imagem turística de Portugal no Brasil: A influência dos atributos na forma??o da imagem de um destino turístico
Rodrigues,Zaíla; Brito,Pedro Quelhas;
Revista Portuguesa e Brasileira de Gest?o , 2009,
Abstract: the image of the destination is one of the greatest drivers on tourists? preferences, motivations and behaviors in their decision process. this paper, at the best of our knowledge, is the first analysis ever made of the brazilian?s image of portugal as a destination. a survey of 360 brazilians was carried out in fortaleza and assessed whether and in what extent there were differences between those who had visited the destination and those who had not. the results indicated that even though the cultural ties between the two countries sharing the same language, the experience of visiting the former colonizer was relevant.
Educa o do corpo na escola brasileira. Marcus Aurélio Taborda de Oliveira (org). Campinas: Autores Associados, 2006, 209 pp.
álvaro de Azeredo Quelhas,Graziany Penna Dias
Trabalho, Educa??o e Saúde , 2007, DOI: 10.1590/s1981-77462007000100009
Abstract:
A imagem turística de Portugal no Brasil: A influência dos atributos na forma o da imagem de um destino turístico La imagen turística de Portugal en Brasil: La influencia de los atributos en la formación del imagen de un destino turístico Tourist Image of Portugal destination among Brazilians: The role of attributes in the image development
Zaíla Rodrigues,Pedro Quelhas Brito
Revista Portuguesa e Brasileira de Gest?o , 2009,
Abstract: A imagem turística influencia, consideravelmente, a preferência, a motiva o e o comportamento dos indivíduos com rela o ao processo de escolha de um destino turístico. Paralelamente, confere uma relevancia estratégica para as regi es onde a actividade turística se desenvolve. Contudo, n o foi identificado na literatura nenhum estudo evidenciando especificamente a imagem de Portugal como destino turístico no Brasil. A presente pesquisa procura aferir a imagem que o consumidor/turista brasileiro tem sobre Portugal como destino turístico, analisando a influência dos atributos do destino na forma o dessa imagem. O estudo caracteriza-se como exploratório/descritivo, com dados colectados através de um inquérito por questionário, aplicados a uma amostra de 360 indivíduos brasileiros, divididos em dois grupos: os que já visitaram Portugal e os que n o visitaram Portugal. Os resultados sugerem que a imagem turística é relativamente dependente da experiência de visita e que existem diferen as significativas na avalia o dos atributos que agregam valor positivo à imagem. La imagen turística influye, considerablemente, la preferencia, la motivación y el comportamiento de los individuos en el proceso de elegir un destino. Además, confiere una importancia estratégica para las regiones donde se desarrolla el turismo. Sin embargo, no fue identificado en la literatura ningún estudio específicamente dónde se muestre la imagen de Portugal como destino turístico de Brasil. Esta investigación tiene por objeto medir la imagen que el consumidor / visitante brasile o tiene de Portugal como destino turístico, teniendo en cuenta la influencia de los atributos del destino en la formación de esta imagen. El estudio se caracteriza por ser exploratorio / descriptivo, con datos recogidos a través de una encuesta por cuestionario, aplicado a una muestra de 360 individuos brasile os, divididos en dos grupos: los que ya visitaron Portugal y los que no visitaron Portugal. Los resultados sugieren que ajustala imagen turística es relativamente dependiente de la experiencia de la visita y que existen diferencias importantes en la evaluación de los atributos que agregan valor positivo a la imagen. The image of the destination is one of the greatest drivers on tourists’ preferences, motivations and behaviors in their decision process. This paper, at the best of our knowledge, is the first analysis ever made of the Brazilian’s image of Portugal as a destination. A survey of 360 Brazilians was carried out in Fortaleza and assessed whether and in what extent there were differences between tho
Megaprojects Front-End Planning: The Case of Brazilian Organizations of Engineering and Construction  [PDF]
Otávio Mansur Motta, Osvaldo Luiz Gon?alves Quelhas, José Rodrigues de Farias Filho, Sérgio Fran?a, Marcelo Meirino
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.48049
Abstract:

The goal of this study is to analyze the adoption of the Front-End Planning method by Brazilian companies which is applied in megaprojects management. For this reason, a survey was conducted with Brazilian companies of different sectors related to Engineering and Construction in order to perceive the adequacy and the frequency of the use of the Front-End Planning method and compare the theory with the market practices. From the eight topics raised to compare the theoretical reference with the organizational practices, only two topics presented relevant differences that need to be investigated in future researches. Among these differences between what is considered in the literature and what is practiced by the companies, it is possible to point out the variations in the project budgets in contrast with the methodology proposal to increase the cost predictability.

Os modelos log-lineares em investiga??o psicológica
Garcia-Marques,Teresa; Quelhas,Ana Cristina; Gomes,Jorge F.;
Análise Psicológica , 1997,
Abstract: log linear models are becoming increasingly relevant in psychology research. these models enable us to analyze qualitative data originated from both experimental (with complex factorial designs) or correlational research. in this article we present the log-li-near approach applying it to data from a deductive thinking study. we compared this approach with the frequently used models associated with bi-variate contingency tables (independence and homogeneity models).
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