oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 29 )

2018 ( 75 )

2017 ( 70 )

2016 ( 83 )

Custom range...

Search Results: 1 - 10 of 51576 matches for " Carlos; Rossini "
All listed articles are free for downloading (OA Articles)
Page 1 /51576
Display every page Item
Sele??o e análise de estímulos na tarefa de busca visual
Rossini, Joaquim Carlos;Galera, Cesar;
Psicologia: Reflex?o e Crítica , 2008, DOI: 10.1590/S0102-79722008000100003
Abstract: the capacity of processing several cognitive stages simultaneously still generates a considerable disagreement among models that try to understand the processing of visual information. many experimental results suggest two main possibilities for the information flow between information processing stages: a discrete or a continuous flow. two experiments have in the present study to investigate were designed attentional processing whether the information at first discarded in a pre-attentive state can influence the of selected information in a visual search task. the results show that the stimuli initially discarded in an automatic process of selection do not interfere in the attention all processing of stimuli in a visual search. the results support the models that predict an early selection of the relevant stimuli and a discrete transmission of the information between the cognitive processing stages.
Stimuli selection and analysis in the visual search task / Sele o e análise de estímulos na tarefa de busca visual
Joaquim Carlos Rossini,Cesar Galera
Psicologia: Reflex?o e Crítica , 2008,
Abstract: The capacity of processing several cognitive stages simultaneously still generates a considerable disagreement among models that try to understand the processing of visual information. Many experimental results suggest two main possibilities for the information flow between information processing stages: a discrete or a continuous flow. Two experiments have in the present study to investigate were designed attentional processing whether the information at first discarded in a pre-attentive state can influence the of selected information in a visual search task. The results show that the stimuli initially discarded in an automatic process of selection do not interfere in the attention all processing of stimuli in a visual search. The results support the models that predict an early selection of the relevant stimuli and a discrete transmission of the information between the cognitive processing stages.
Aten??o visual: estudos comportamentais da sele??o baseada no espa?o e no objeto
Rossini, Joaquim Carlos;Galera, César;
Estudos de Psicologia (Natal) , 2006, DOI: 10.1590/S1413-294X2006000100010
Abstract: the study of visual attention has become an important topic in cognitive psychology research in the last 30 years. however, many questions about the nature of attention are not well understood. the efforts to understand this cognitive architecture are centered in two great theoretical models on the visual attention: the first model supports that visual attention is allocated on visual space (location-based visual attention) while a second model supports that attention could select the objects representations per se (object-based visual attention). in this review, we pooled important researches about these two seminal models and some questions concerning the human visual attention were examined.
Os efeitos da idade na sele??o de carga perceptual
Sousa, Vanessa Coelho de;Rossini, Joaquim Carlos;
Psicologia: Teoria e Pesquisa , 2011, DOI: 10.1590/S0102-37722011000200009
Abstract: some studies suggest the existence of distinct maturation moments of the attentional system. this study investigated the selection patterns of visual information through a perceptual load task performed by three age groups: children, adults and elderly people. in general, the obtained results indicate a decrease of the efficiency in the process of information selection under low perceptual load in the group of elderly people, and a decrease of the selection efficiency under conditions of high and low perceptual load in the group composed by children. the results suggest the existence of specific patterns in the selection of visual information in relation to age and the perceptual load to be processed by the visual system.
Focaliza??o da aten??o visual
Rossini, Joaquim Carlos;Galera, Cesar Alexis;
Psicologia: Reflex?o e Crítica , 2010, DOI: 10.1590/S0102-79722010000100018
Abstract: this study investigated the dynamic adjustment of the attention focusing in function of some physical characteristics of an exogenous visual cue. the first experiment investigated the effect of the area delimitated by a visual cue presented by different intervals between stimuli. the second experiment investigated the availability of attentional resources in the horizontal and vertical meridian of the visual field and the effect of flanking letters presented in and out of the attention focusing. the results of the first experiment suggest that the attention focusing may be kept stable for a period longer than 500 milliseconds and that the time through which the attention resources can remain stable is inversely proportional to their area. these results also corroborated an inverse relation between the size of the area to be fulfilled and the information processing efficiency. the results of the second experiment corroborated the effect caused by flanking letters observed by other authors (b. ericksen & ericksen, 1974; miller, 1991) with an increase on the reaction time in the presence of the flanking letter incompatible with the target. flanking letters have a significant smaller effect when presented out of the area delimitated by the visual cue. this result indicates an inhibitory attentional action out of the focusing area. moreover, a possible asymmetry in the distribution of these inhibitory resources between the horizontal and vertical meridian of the visual field was also observed.
Visual attention focusing / Focaliza o da aten o visual
Joaquim Carlos Rossini,Cesar Alexis Galera
Psicologia: Reflex?o e Crítica , 2010,
Abstract: This study investigated the dynamic adjustment of the attention focusing in function of some physical characteristics of an exogenous visual cue. The first experiment investigated the effect of the area delimitated by a visual cue presented by different intervals between stimuli. The second experiment investigated the availability of attentional resources in the horizontal and vertical meridian of the visual field and the effect of flanking letters presented in and out of the attention focusing. The results of the first experiment suggest that the attention focusing may be kept stable for a period longer than 500 milliseconds and that the time through which the attention resources can remain stable is inversely proportional to their area. These results also corroborated an inverse relation between the size of the area to be fulfilled and the information processing efficiency. The results of the second experiment corroborated the effect caused by flanking letters observed by other authors (B. Ericksen & Ericksen, 1974; Miller, 1991) with an increase on the reaction time in the presence of the flanking letter incompatible with the target. Flanking letters have a significant smaller effect when presented out of the area delimitated by the visual cue. This result indicates an inhibitory attentional action out of the focusing area. Moreover, a possible asymmetry in the distribution of these inhibitory resources between the horizontal and vertical meridian of the visual field was also observed.
POPULA O E PROCESSO DE ESTRUTURA O DO ESPA O GEOGRáFICO
Ana Fani Alessandri Carlos,Rosa Ester Rossini
Revista do Departamento de Geografia , 1983, DOI: 10.7154/rdg.v0i2.281
Abstract: POPULA O E PROCESSO DE ESTRUTURA O DO ESPA O GEOGRáFICO
Aten o seletiva e informa o de alto nível: modelos de sele o da informa o em cenas naturais Atención selectiva e informaciones de alto-nivel: modelos de selección de la información en escenas naturales Selective Attention and high-level information: model of information selection in natural scenes
Frederico Miranda Rodrigues Pinheiro,Joaquim Carlos Rossini
Psico-USF , 2012, DOI: 10.1590/s1413-82712012000200010
Abstract: De modo geral, as investiga es acerca da aten o seletiva apresentaram uma grande ênfase no estudo do processamento da informa o visual de baixo nível e médio nível, fazendo uso, para tanto, de estímulos visuais relativamente simples (letras, números e formas geométricas). No entanto, tem crescido o número de estudos sobre a influência da informa o de alto nível no processamento de cenas mais complexas e contextualizadas. A presente revis o tem como objetivo apresentar estudos relevantes sobre este tema e centra a sua discuss o nos principais aspectos divergentes entre os modelos discretos do processamento atentivo, que preveem que a informa o de alto-nível é processada em momentos tardios, e os modelos de processamento inicial, que preveem uma influência da informa o de alto-nível em momentos precoces do processo de sele o da informa o visual. En general, las investigaciones respecto a la atención selectiva presentaron gran énfasis en el estudio del procesamiento de la información visual de bajo nivel y medio nivel, haciendo uso, para tanto, de estímulos visuales relativamente simples (letras, números y formas geométricas). Sin embargo, ha crecido el número de estudios sobre la influencia de la información de alto nivel en el procesamiento de escenas más complejas y contextualizadas. La presente revisión tiene como objetivo presentar estudios relevantes sobre este tema y centrar su discusión en los principales aspectos divergentes entre los modelos discretos del procesamiento atentivo, que predicen que la información de alto nivel es procesada en momentos tardíos, y los modelos de procesamiento inicial, que predicen una influencia de la información de alto nivel en momentos precoces del proceso de selección de la información visual. The researches about selective attention showed great emphasis on the study of low-level and mid-level processing of visual information, using relatively simple visual stimulus (letters, numbers and geometric shapes). However, there are an increasing number of studies about the influence of high-level information on the selection with complex scenes in natural contexts. The aim to present article is review the relevant studies about this area and highlight the differences between the discrete process model, which predicts that high-level information is processed in the late stages, and the early model that predicts an influence of high-level information on early visual selection.
Modelos para estimativa da área foliar de Curcuma alismatifolia e Vurcuma zedoaria
Pinto, Ana Christina Rossini;Graziano, Taís Tostes;Barbosa, José Carlos;Lasmar, Fabiana Basso;
Bragantia , 2008, DOI: 10.1590/S0006-87052008000200033
Abstract: the present work establishes regression models to estimate leaf area of curcuma alismatifolia and curcuma zedoaria. to use these of species as ornamental plants is necessary to establish adequate cultivation techniques. thus, the determination of leaf area is very important, once it is used to evaluate plant response to environmental factors and crop techniques. the use of prediction models to estimate leaf area is a simple, accurate and nondestructive method. at the stage of flowering, a hundred leaves of c.alismatifolia ('pink' and 'white') and c.zedoaria were collected for each species and cultivar. maximum length (l), maximum width (w) and real leaf area (rla) were measured with a leaf area meter (li-3100). the relation between rla and the l, w and the product of length by width (lw), was studied through linear regression models. the models rla = 0.59048 lw (c.alismatifolia 'pink'), rla = 6.08410 + 0.52161 lw (c.alismatifolia 'white') and rla = 0.70233 lw (c.zedoaria) are adequate to estimate leaf area.
Retardadores de crescimento na produ??o de plantas floridas envasadas de a?afr?o-da-cochinchina
Pinto, Ana Christina Rossini;Graziano, Taís Tostes;Barbosa, José Carlos;Lasmar, Fabiana Basso;
Bragantia , 2006, DOI: 10.1590/S0006-87052006000300002
Abstract: the introduction of new products is important for the growth of brazilian floriculture industry. the thai tulip (curcuma alismatifolia) has a highly attractive inflorescence and foliage, and great prospect as a flowering potted plant with the aid of growth retardants, which are used to produce compact plants. the effect of growth retardants on `pink' thai tulip production was evaluated under controlled growing conditions at holambra, sp. the experimental design was randomized blocks, with three replications and eleven treatments: control, paclobutrazol (20; 25; 30 and 35 mg a.i./pot, applied as a single drench), daminozide sprayed two, three and five times at concentration of 2.125 g l-1 and, a solution of daminozide (1.275 g l-1) plus chlormequat (0.2 g l-1) sprayed two, three and five times. rhizome was planted in plastic pot (1.0 l) filled with commercial medium and fertilized daily. paclobutrazol (35 mg a.i./pot) significantly reduced plant and foliage height and flower stem length, without affecting inflorescence length and delaying production cycle. however, plants were not compact enough to meet market quality demand. foliage height and flower stem length were not significantly affected by others retardants treatments compared with control.
Page 1 /51576
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.