oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

4 ( 1 )

2019 ( 2 )

2018 ( 3 )

2017 ( 6 )

Custom range...

Search Results: 1 - 10 of 2208 matches for " Jacqueline;Magosso "
All listed articles are free for downloading (OA Articles)
Page 1 /2208
Display every page Item
Al2O3 coated with 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octane silsesquioxane chloride and its use for immobilization of cobalt(II) tetrasulfonated phthalocyanine in oxalic acid electrooxidation
Ramos, André R.;Arguello, Jacqueline;Magosso, Hérica A.;Gushikem, Yoshitaka;
Journal of the Brazilian Chemical Society , 2008, DOI: 10.1590/S0103-50532008000400020
Abstract: a water-soluble polymer prepared by sol-gel process, 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octane silsesquioxane chloride, was adsorbed on alumina surface. this polymer-coated alumina was able to effectively immobilize cobalt(ii) tetrasulfonated phthalocyanine complexes as counter ions. cobalt phthalocyanine immobilized in this way is well and tightly adsorbed on al2o3/3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octane silsesquioxane chloride surface. furthermore, when incorporated to a carbon paste electrode showed a good electrocatalytic response toward the acid oxalic oxidation, making it a suitable electrode material. a linear relationship (r = 0.998) between the current responses obtained by chronoamperometric measurements and the oxalic acid concentration in the range of 7.4 × 10-5 - 9.1 × 10-4 mol l-1 was observed. a detection limit of 18 μmol l-1 was also determined.
Conocimiento sobre el fenómeno de las drogas en entre estudiantes y docentes de la Facultad de Medicina Universidad Mayor de San Andrés, La Paz, Bolivia
Navia-Bueno, Maria del Pilar;Farah-Bravo, Jacqueline;Yaksic-Feraudy, Nina;Philco-Lima, Patrícia;Takayanagui, Angela Maria Magosso;
Revista Latino-Americana de Enfermagem , 2011, DOI: 10.1590/S0104-11692011000700009
Abstract: the goal of this study was to identify the degree of knowledge of students and health educators on licit and illicit drugs, related to the type, classification, action, mechanisms damages, consequences and adverse effects, besides use and consumption. a cross-sectional methodological design was used, with a sample of 172 students, professors and residents in medicine and nursing at universidad mayor de san andrés (umsa), bolivia. the results reveal weak knowledge on the classification of psychotropic substances according to structure, chemical property and effects for health, highlighting significant difference with knowledge on licit and illicit drugs use, with high percentages. in conclusion, there is lack of knowledge in all groups studied on licit and illicit drugs regarding the consequences and adverse effects. this confirms the need to improve teaching on this content in health schools.
Consciência ecológica e os resíduos de servi?os de saúde
Takayanagui, Angela Maria Magosso;
Revista Latino-Americana de Enfermagem , 1993, DOI: 10.1590/S0104-11691993000200008
Abstract: environmental clean-up involves a series of factors, among them the question of solid wastes, which are not always properly managed. the problem is more serious with respect medical waste. the awareness of people and the attention of administrators are of fundamental importance for an equilibrated coexistence with the physical environment.
The Pedagogy of Visual Discourse: An Analytical Approach to Teaching and Evaluating the Rhetorical Image  [PDF]
Jacqueline Irwin
Art and Design Review (ADR) , 2014, DOI: 10.4236/adr.2014.22003
Abstract:

As the area of visual rhetoric develops and evolves, the approaches that critics take in evaluating images must be scrutinized for the overall exploration of the discipline. Incorporating areas of analytical criticism from rhetoric to aesthetics to design should be combined to create the best possible way of evaluating imagery. By expanding on the traditional analytical approach to rhetorical criticism, this paper explores how the additional understanding of aesthetic and design theory will help the critic to reach a fuller understanding of the image. The twelve major principles of design being line, shape and form, space, texture, value, color, repetition, variety, rhythm, balance, emphasis, and economy are combined to create the strategy of the visual aesthetic that works to compliment the existing rhetorical strategies. The more complete understanding of how visuals are created and how people interpret them will allow for a more complete development of the visual rhetorical approach to communication.

A Semantic Model to Study Neural Organization of Language in Bilingualism
M. Ursino,C. Cuppini,E. Magosso
Computational Intelligence and Neuroscience , 2010, DOI: 10.1155/2010/350269
Abstract: A neural network model of object semantic representation is used to simulate learning of new words from a foreign language. The network consists of feature areas, devoted to description of object properties, and a lexical area, devoted to words representation. Neurons in the feature areas are implemented as Wilson-Cowan oscillators, to allow segmentation of different simultaneous objects via gamma-band synchronization. Excitatory synapses among neurons in the feature and lexical areas are learned, during a training phase, via a Hebbian rule. In this work, we first assume that some words in the first language (L1) and the corresponding object representations are initially learned during a preliminary training phase. Subsequently, second-language (L2) words are learned by simultaneously presenting the new word together with the L1 one. A competitive mechanism between the two words is also implemented by the use of inhibitory interneurons. Simulations show that, after a weak training, the L2 word allows retrieval of the object properties but requires engagement of the first language. Conversely, after a prolonged training, the L2 word becomes able to retrieve object per se. In this case, a conflict between words can occur, requiring a higher-level decision mechanism. 1. Introduction The term semantic memory is commonly used to denote a kind of declarative memory which is independent of the context as well as culturally shared and involves words and concepts. Several theories of semantic memory have been developed in the past decades, with the aim of understanding how words are linked with object representation, and how this link is altered in pathological subjects with neurological deficits. In most of these theories, semantic memory is considered a distributed process, which involves many different cortical areas and adopts a multimodal (sensory-motor) representation of objects [1–4]. More specifically, in these theories an object is usually represented as a collection of features spreading across different sensory and motor modalities, which must be linked together and with the corresponding words. Hence, retrieval of objects from memory requires that all these distributed representations, and the corresponding words, be activated all together starting from sensory or lexical cues, and integrated to form a single coherent percept. Synchronization in the gamma band is nowadays assumed to play an essential role in high-level cognitive processes. Recent results suggest that gamma rhythms are involved in high-level object memorization and retrieval [5], and
Dynamic Sounds Capture the Boundaries of Peripersonal Space Representation in Humans
Elisa Canzoneri, Elisa Magosso, Andrea Serino
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0044306
Abstract: Background We physically interact with external stimuli when they occur within a limited space immediately surrounding the body, i.e., Peripersonal Space (PPS). In the primate brain, specific fronto-parietal areas are responsible for the multisensory representation of PPS, by integrating tactile, visual and auditory information occurring on and near the body. Dynamic stimuli are particularly relevant for PPS representation, as they might refer to potential harms approaching the body. However, behavioural tasks for studying PPS representation with moving stimuli are lacking. Here we propose a new dynamic audio-tactile interaction task in order to assess the extension of PPS in a more functionally and ecologically valid condition. Methodology/Principal Findings Participants vocally responded to a tactile stimulus administered at the hand at different delays from the onset of task-irrelevant dynamic sounds which gave the impression of a sound source either approaching or receding from the subject’s hand. Results showed that a moving auditory stimulus speeded up the processing of a tactile stimulus at the hand as long as it was perceived at a limited distance from the hand, that is within the boundaries of PPS representation. The audio-tactile interaction effect was stronger when sounds were approaching compared to when sounds were receding. Conclusion/Significance This study provides a new method to dynamically assess PPS representation: The function describing the relationship between tactile processing and the position of sounds in space can be used to estimate the location of PPS boundaries, along a spatial continuum between far and near space, in a valuable and ecologically significant way.
A Neural Network Model of Ventriloquism Effect and Aftereffect
Elisa Magosso, Cristiano Cuppini, Mauro Ursino
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0042503
Abstract: Presenting simultaneous but spatially discrepant visual and auditory stimuli induces a perceptual translocation of the sound towards the visual input, the ventriloquism effect. General explanation is that vision tends to dominate over audition because of its higher spatial reliability. The underlying neural mechanisms remain unclear. We address this question via a biologically inspired neural network. The model contains two layers of unimodal visual and auditory neurons, with visual neurons having higher spatial resolution than auditory ones. Neurons within each layer communicate via lateral intra-layer synapses; neurons across layers are connected via inter-layer connections. The network accounts for the ventriloquism effect, ascribing it to a positive feedback between the visual and auditory neurons, triggered by residual auditory activity at the position of the visual stimulus. Main results are: i) the less localized stimulus is strongly biased toward the most localized stimulus and not vice versa; ii) amount of the ventriloquism effect changes with visual-auditory spatial disparity; iii) ventriloquism is a robust behavior of the network with respect to parameter value changes. Moreover, the model implements Hebbian rules for potentiation and depression of lateral synapses, to explain ventriloquism aftereffect (that is, the enduring sound shift after exposure to spatially disparate audio-visual stimuli). By adaptively changing the weights of lateral synapses during cross-modal stimulation, the model produces post-adaptive shifts of auditory localization that agree with in-vivo observations. The model demonstrates that two unimodal layers reciprocally interconnected may explain ventriloquism effect and aftereffect, even without the presence of any convergent multimodal area. The proposed study may provide advancement in understanding neural architecture and mechanisms at the basis of visual-auditory integration in the spatial realm.
To Publish or Not to Publish before Submission? Considerations for Doctoral Students and Supervisors  [PDF]
Jacqueline H. Watts
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.326165
Abstract: Postgraduate research education is multi-faceted incorporating the teaching of a range of skills and study behaviours. A key skill for doctoral students is that of scholarly writing that Aitchison (2009) argues is often difficult to teach, with students unclear about the standards required for doctoral work. One benchmark of standards of academic literacy is published outputs, with Kamler (2008) pressing for greater pedagogical attention to be given to writing for publication within doctoral education. However, the case for pursuing publication as part of doctoral research experience is subject to a number of variables. This discussion paper debates some of these variables to consider writing for publication within diverse doctoral education. Features of difference will be discussed to reveal that the choice of whether or not to “publish as you go” (Taylor & Beasley, 2005: 130) is influenced by the personal, disciplinary and institutional context that frames the doctoral undertaking.
The Impact of Climate Modes on Summer Temperature and Precipitation of Darwin, Australia, 1870-2011  [PDF]
Cameron Hunter, Jacqueline Binyamin
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.24051
Abstract:

Monthly mean summer (DJF) temperature and precipitation from Global Historical Climate Network (GHCN-V3) for the period of 1870-2011, are analyzed to assess the role of teleconnections on climate of Darwin, Australia. Indices of El Nino-Southern Oscillation (ENSO), Antarctic Oscillation (AAO), Pacific Decadal Oscillation (PDO), North Atlantic Oscillation (NAO), Arctic Oscillation (AO), and Pacific North American Oscillation (PNA) are extracted from monthly means and compared with climatic data of Darwin. Most of these climate modes are shown to have a strong influence on the monthly mean summer temperature and precipitation. ENSO is shown to have a positive relationship with the amount of precipitation received and a negative relationship with the temperature. Where an El Nino event produces warmer drier conditions and a La Nina event produces colder wetter conditions. The AAO is shown to cause cold and dry conditions during the positive phase and warm and wet conditions during the negative phase. The PDO is shown to cause El Nino like condition during the positive phase causing warmer, drier weather, and La Nina like conditions during the negative phase causing cooler, wetter weather. Through the analysis it is also shown that the NAO, AO, and PNA have little effect on the temperature and precipitation patterns of Darwin.

Evidence that the Vinland Map Was Drawn Using an Iron Gall Ink: The Continuing Need for Further Research  [PDF]
Jacqueline S. Olin
Advances in Chemical Engineering and Science (ACES) , 2012, DOI: 10.4236/aces.2012.24063
Abstract: The Vinland Map is a map of the world that shows “the island of Vinland” in the northwest Atlantic Ocean. It is housed in the Beinecke Rare Book and Manuscript Library at Yale University. The Map has been purported to date from the Council of Basle, AD 1431-1449. The nature of the ink of the Map has not been identified. It has been suggested that it may be an iron gall ink, a carbon ink or an ink that contains anatase and gelatin and perhaps other unknown constituents. This paper will present evidence that supports the ink being an iron gall ink. It is intended that this evidence will encourage further research.


Page 1 /2208
Display every page Item


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