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Análise do comportamento informacional de pós-graduandos surdos: subsídios teórico-práticos para a organização e representação do conhecimento

Coneglian, André Luís Onório
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Dissertação de Mestrado Formato: 165 f. : il. color.
POR
Relevância na Pesquisa
26.1%
Pós-graduação em Ciência da Informação - FFC; Production of knowledge achieved by faculty and student researchers in the graduate context is necessarily shaped in information behavior. Users studies based on the domain analysis approach demonstrate to be relevant in so far as they enable the investigation of the information needs of different user communities. Thus, the study sought to characterize and analyze the information behavior of signing deaf graduate students (those that use Brazilian Sign Language), enrolled in Education and Linguistic graduate programs of the Federal University of Santa Catarina. The objective is to identify to the theoretical and practical subsidies for the organization and representation of knowledge, regulated in the ethical dimension of cultural warrant for the deaf patron that use sign language. The paradigm of the inclusion and the principles of accessibility also offered important bases for the study, which ratify the necessity of respect to special needs. The methodology based in bibliographical revision, application of questionnaire, interview and observation, both used focal group. The results demonstrate the need of the Information Organization to consider the production of knowledge also achieved in sign language registered in different supports. The appropriate informational treatment will be able to enhance the retrieval and diffusion of information for deaf and hearing people...

Dimensões teórico-metodológicas do cálculo diferencial e integral: perspectivas histórica e de ensino e aprendizagem

Escher, Marco Antonio
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Tese de Doutorado Formato: 222 f. : il., tabs.
POR
Relevância na Pesquisa
46.09%
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Pós-graduação em Educação Matemática - IGCE; Esta pesquisa descreve um Cenário de Investigação criado por algumas dimensões teórico-metodológicas, as quais apresentam, em duas perspectivas inter-relacionadas, as influências, limites e potencialidades do uso das Tecnologias de Informação e Comunicação no Cálculo Diferencial e Integral: (1) em uma perspectiva histórica, e (2) em uma perspectiva de ensino e de aprendizagem. O objetivo deste trabalho consiste em investigar as dimensões teórico-metodológicas presentes nas inter-relações do Cálculo Diferencial e Integral e as Tecnologias Informacionais e Comunicacionais (TIC). A pesquisa foi desenvolvida lançando mão de uma metodologia qualitativa, com a qual o pesquisador insere-se no contexto pesquisado e no desenvolvimento da coleta dos dados da pesquisa e, aos poucos, constrói o Cenário de Investigação, tendo, como pano de fundo, o Paradigma Indiciário de Carlo Ginzburg. Desta forma, delineamos uma Coda a qual nos fornece uma síntese conceitual das perspectivas (1) e (2), viabilizando-nos a percorrer um caminho teórico-metodológico em busca dos indícios que influenciam os processos de ensinar e aprender Cálculo no contexto das Tecnologias de Informação e Comunicação. Para tanto...

Apontamentos sobre a formação de professores bilíngues para educação de surdos em língua de sinais; Considerations on the formation of bilingual teachers to the deaf education with sign language

Sibele Maria Souza
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 11/05/2012 PT
Relevância na Pesquisa
36.1%
O presente trabalho discute a formação de professor bilíngue. Os conceitos sobre surdos sempre estiveram atrelados à deficiência na história da educação especial. No entanto sempre encontramos movimentos surdos em debate contra um sistema que pensa a pessoa surda sob o paradigma de deficiência. As conquistas dos surdos na educação estão marcadas pelo reconhecimento da língua de sinais como a Lei, de 10.436, regulamentada em 24 de abril de 2002 e o Decreto nº 5.626, de 22 de dezembro de 2005 que vem traçar caminhos para conquista de uma educação bilingue na qual se prioriza a língua de sinais como a primeira língua na educação de crianças surdas. Apresento, também, neste trabalho, minha experiência em um projeto de inclusão bilíngüe no Município de Campinas, que se baseia no respeito à língua de sinais, como primeira língua para surdos e propõe também o ensino desta como segunda língua para ouvintes na educação escolar.; This paper discusses the education of a bilingual teacher. In the history of special education the concepts about deaf people has always been linked with the disability. However it is possible to find movements fighting against a system that considers deaf people under the paradigm of disability. The conquests in education are the acceptance of sign language by the Law 10.436...

Spatiotemporal intracellular calcium dynamics during cardiac alternans

Restrepo, Juan G.; Karma, Alain
Fonte: American Institute of Physics Publicador: American Institute of Physics
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
25.79%
Cellular calcium transient alternans are beat-to-beat alternations in the peak cytosolic calcium concentration exhibited by cardiac cells during rapid electrical stimulation or under pathological conditions. Calcium transient alternans promote action potential duration alternans, which have been linked to the onset of life-threatening ventricular arrhythmias. Here we use a recently developed physiologically detailed mathematical model of ventricular myocytes to investigate both stochastic and deterministic aspects of intracellular calcium dynamics during alternans. The model combines a spatially distributed description of intracellular calcium cycling, where a large number of calcium release units are spatially distributed throughout the cell, with a full set of ionic membrane currents. The results demonstrate that ion channel stochasticity at the level of single calcium release units can influence the whole-cell alternans dynamics by causing phase reversals over many beats during fixed frequency pacing close to the alternans bifurcation. They also demonstrate the existence of a wide range of dynamical states. Depending on the sign and magnitude of calcium-voltage coupling, calcium alternans can be spatially synchronized or desynchronized...

Autoshaping in adolescence enhances sign-tracking behavior in adulthood: Impact on ethanol consumption

Anderson, Rachel I.; Spear, Linda P.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
26.18%
Autoshaping refers to a procedure during which a cue repeatedly paired with a reward elicits a conditioned response directed at either the reward delivery location (“goal-tracking”) or the cue itself (“sign-tracking”). Individual differences in expression of sign-tracking behavior may be predictive of voluntary ethanol intake. The present study was designed to explore the development of differences in sign-tracking behavior in adolescent and adult male and female rats in an 8-day autoshaping procedure. Consistency of sign-tracking and goal-tracking across age was examined by retesting adolescents again in adulthood and comparing their adult data with animals tested only as adults to explore pre-exposure effects on adult responding. In order to assess the relationship between sign-tracking and ethanol intake, voluntary ethanol consumption was measured in an 8-day, 2-hr limited access drinking paradigm following the 8-day autoshaping procedure in adulthood. Animals tested as adolescents showed notably less sign-tracking behavior than animals tested as adults, and sign-tracking behavior was not correlated across age. Animals exposed to the autoshaping procedure as adolescents demonstrated greater sign-tracking behavior as adults when compared to control animals tested only in adulthood. When examining the relationship in adulthood between sign-tracking and ethanol intake...

Which cue to ‘want’? Opioid stimulation of central amygdala makes goal-trackers show stronger goal-tracking, just as sign-trackers show stronger sign-tracking

DiFeliceantonio, Alexandra G.; Berridge, Kent C.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
26.14%
Pavlovian cues that have been paired with reward can gain incentive salience. Drug addicts find drug cues motivationally attractive and binge eaters are attracted by food cues. But the level of incentive salience elicited by a cue re-encounter still varies across time and brain states. In an animal model, cues become attractive and ‘wanted’ in an ‘autoshaping’ paradigm, where different targets of incentive salience emerge for different individuals. Some individuals (sign-trackers) find a predictive discrete cue attractive while others find a reward contiguous and goal cue more attractive (location where reward arrives: goal-trackers). Here we assessed whether central amygdala mu opioid receptor stimulation enhances the phasic incentive salience of the goal-cue for goal-trackers during moments of predictive cue presence (expressed in both approach and consummatory behaviors to goal cue), just as it enhances the attractiveness of the predictive cue target for sign-trackers. Using detailed video analysis we measured the approaches, nibbles, sniffs, and bites directed at their preferred target for both sign-trackers and goal-trackers. We report that DAMGO microinjections in central amygdala made goal-trackers, like sign-trackers...

Experience-dependent switch in sign and mechanisms for plasticity in layer 4 of primary visual cortex

Wang, L.; Fontanini, A.; Maffei, A.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 01/08/2012 EN
Relevância na Pesquisa
25.94%
Neural circuits are extensively refined by sensory experience during postnatal development. How the maturation of recurrent cortical synapses may contribute to events regulating the postnatal refinement of neocortical microcircuits remains controversial. Here we show that in the main input layer of rat primary visual cortex, layer 4 (L4), recurrent excitatory synapses are endowed with multiple, developmentally-regulated mechanisms for induction and expression of excitatory synaptic plasticity. Maturation of L4 synapses and visual experience lead to a sharp switch in sign and mechanisms for plasticity at recurrent excitatory synapses in layer 4 at the onset of the critical period for visual cortical plasticity. The state of maturation of excitatory pyramidal neurons allows neurons to engage different mechanisms for plasticity in response to the same induction paradigm. Experience is determinant for the maturation of L4 synapses, as well as for the transition between forms of plasticity and the mechanisms they may engage. These results indicate a tight correlation between the effects of sensory drive and maturation on cortical neurons and provide a new set of cellular mechanisms engaged in the postnatal refinement of cortical circuits.

Fast and Exact Continuous Collision Detection with Bernstein Sign Classification

Tang, Min; Tong, Ruofeng; Wang, Zhendong; Manocha, Dinesh
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /11/2014 EN
Relevância na Pesquisa
25.79%
We present fast algorithms to perform accurate CCD queries between triangulated models. Our formulation uses properties of the Bernstein basis and Bézier curves and reduces the problem to evaluating signs of polynomials. We present a geometrically exact CCD algorithm based on the exact geometric computation paradigm to perform reliable Boolean collision queries. Our algorithm is more than an order of magnitude faster than prior exact algorithms. We evaluate its performance for cloth and FEM simulations on CPUs and GPUs, and highlight the benefits.

Fearful, but not Angry, Expressions Diffuse Attention to Peripheral Targets in an Attentional Blink Paradigm

Taylor, James M.; Whalen, Paul J.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
25.95%
We previously demonstrated that, within a passive viewing task, fearful facial expressions implicitly facilitate memory for contextual events, while angry facial expressions do not (Davis et al., 2011). The current study sought to more directly address the implicit effect of fearful expressions on attention for contextual events within a classic attentional paradigm (i.e., the attentional blink) where memory is tested on a trial-by-trial basis, thereby providing subjects with a clear explicit attentional strategy. Neutral faces of a single gender were presented via rapid serial visual presentation (RSVP) while bordered by four gray pound signs. Participants were told to watch for a gender change within the sequence (T1). Critically, the T1 face displayed either a neutral, fearful, or angry expression. Subjects were also told to detect a color change (i.e., gray to green; T2) at one of the four pound sign locations appearing after T1. This T2 color change could appear at one of six temporal positions. Participants were told to respond via button press immediately when a T2 target was presented. We found that fearful, compared to the neutral T1 faces, significantly increased target detection ability at four of the six temporal locations (all p’s < .05) while angry expressions showed no such effects. The results of this study suggest that fearful facial expressions can uniquely and implicitly enhance environmental monitoring above and beyond explicit attentional effects related to task instructions.

Blocking NMDA-receptors in the pigeon’s “prefrontal” caudal nidopallium impairs appetitive extinction learning in a sign-tracking paradigm

Lengersdorf, Daniel; Marks, David; Uengoer, Metin; Stüttgen, Maik C.; Güntürkün, Onur
Fonte: Frontiers Media S.A. Publicador: Frontiers Media S.A.
Tipo: Artigo de Revista Científica
Publicado em 13/04/2015 EN
Relevância na Pesquisa
26.09%
Extinction learning provides the ability to flexibly adapt to new contingencies by learning to inhibit previously acquired associations in a context-dependent manner. The neural networks underlying extinction learning were mostly studied in rodents using fear extinction paradigms. To uncover invariant properties of the neural basis of extinction learning, we employ pigeons as a model system. Since the prefrontal cortex (PFC) of mammals is a key structure for extinction learning, we assessed the role of N-methyl-D-aspartate receptors (NMDARs) in the nidopallium caudolaterale (NCL), the avian functional equivalent of mammalian PFC. Since NMDARs in PFC have been shown to be relevant for extinction learning, we locally antagonized NMDARs through 2-Amino-5-phosphonovalerianacid (APV) during extinction learning in a within-subject sign-tracking ABA-renewal paradigm. APV-injection slowed down extinction learning and in addition also caused a disinhibition of responding to a continuously reinforced control stimulus. In subsequent retrieval sessions, spontaneous recovery was increased while ABA renewal was unaffected. The effect of APV resembles that observed in studies of fear extinction with rodents, suggesting common neural substrates of extinction under both appetitive and aversive conditions and highlighting the similarity of mammalian PFC and the avian caudal nidopallium despite 300 million years of independent evolution.

Persistence of a hyperthermic sign-reversal during nitrous oxide inhalation despite cue-exposure treatment with and without a drug-onset cue

Kaiyala, Karl J.; Woods, Stephen C.; Ramsay, Douglas S.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
26.1%
We asked whether chronic tolerance and the hyperthermic sign-reversal induced by repeated 60% N2O exposures could be extinguished using a cue-exposure paradigm. Rats received 18 N2O administrations in a total calorimetry system that simultaneously measures core temperature (Tc), metabolic heat production (HP), and body heat loss (HL). Each exposure entailed a 2-h baseline period followed by a 1.5-h N2O exposure. The 18 drug exposures induced a robust intra-administration hyperthermia in which the initial hypothermic effect of N2O inverted to a significant hyperthermic sign-reversal during N2O inhalation due primarily to an acquired robust increase in HP. The rats were then randomized to one of three extinction procedures (n=8/procedure) over a 20-d interval: 1) a N2O-abstinent home-cage group (HC) that received only the usual animal care; 2) a cue-exposure group (CEXP) in which the animals were placed in the calorimeter 8 times but received no N2O; and 3) a drug-onset-cue group (DOC) in which animals received a brief N2O exposure in the calorimeter that mimicked the first 3 min of an actual 60% N2O trial. Following the extinction sessions, all rats received a 60% N2O test trial and Tc, HP and HL were assessed. The hyperthermic sign-reversal remained fully intact during the test trial...

Measuring gains in literacy of deaf preschoolers : an action research study

Schlehofer, Deirdre ; Borasi, Raffaella ; Mock, Martha
Fonte: University of Rochester. Publicador: University of Rochester.
Tipo: Tese de Doutorado Formato: Number of Pages:x, 280 leaves
ENG
Relevância na Pesquisa
25.79%
Thesis (Ed. D.)--University of Rochester. Margaret Warner Graduate School of Education and Human Development, 2009.; Research has shown that family involvement during meaningful book-sharing activities can support emergent language and literacy development. However, little is known about how hearing parents read books to their deaf children at home with the assistance of ASL-using tutors. The literature suggests that the majority of deaf children from hearing families would benefit from a learning model of a community of learners collaborating to create a zone of proximal development, consistent work socio-cultural theory espoused by Vygotsky and other like-minded theorists. A long-running national program, the Shared Reading Project (SRP) is devoted to training hearing parents to read to their deaf children with the assistance of ASL tutors. Activities are based on book-sharing principles and continue for a ten-week or a twenty-week period. This study was designed to begin to explore how some assessments could help improve the effectiveness of the cross-cultural bilingual literacy practices taking place in SRP and the collaboration between parents and tutors. Using an action research paradigm, I collaborated with two sets of SRP parents and a tutor to develop...

Hybrid paradigm for Spanish Sign Language synthesis

López-Colino, Fernando; Colás, José
Fonte: Springer-Verlag Publicador: Springer-Verlag
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
26.18%
The final publication is available at Springer via http://dx.doi.org/10.1007/s10209-011-0245-9; This work presents a hybrid approach to sign language synthesis. This approach allows the hand-tuning of the phonetic description of the signs, which focuses on the time aspect of the sign. Therefore, the approach retains the capacity for the performing of morpho-phonological operations, like notation-based approaches, and improves the synthetic signing performance, such as the hand-tuned animations approach. The proposed approach simplifies the input message description using a new high-level notation and storage of sign phonetic descriptions in a relational database. Such relational database allows for more flexible sign phonetic descriptions; it also allows for a description of sign timing and the synchronization between sign phonemes. The new notation, named HLSML, is a gloss-based notation focusing on message description in it. HLSML introduces several tags that allow for the modification of the signs in the message that defines dialect and mood variations, both of which are defined in the relational database, and message timing, including transition durations and pauses. A new avatar design is also proposed that simplifies the development of the synthesizer and avoids any interference with the independence of the sign language phonemes during animation. The obtained results showed an increase of the sign recognition rate compared to other approaches. This improvement was based on the active role that the sign language experts had in the description of signs...

Símbolo e signo: o dinheiro no capitalismo contemporâneo

PAULANI, Leda Maria; MÜLLER, Leonardo André Paes
Fonte: Instituto de Pesquisas Econômicas da FEA-USP Publicador: Instituto de Pesquisas Econômicas da FEA-USP
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
25.94%
O presente texto busca refletir sobre a natureza do dinheiro no capitalismo contemporâneo, debruçandose particularmente sobre o fato de que, atualmente, não só no plano nacional, mas também no mundial, o objeto que corporifica o dinheiro é inconversível, ou seja, não tem lastro, nem nenhuma relação, por remota que seja, com uma mercadoria de verdade. O enfoque teórico é aquele oferecido pela teoria de Marx, paradigma esse que é tratado a partir de uma leitura hegeliana. Partimos da diferença entre símbolo e signo, para mostrar de que maneira Marx, movendo-se no arcabouço hegeliano, pôde construir uma linguagem das mercadorias, onde o dinheiro - e a autonomia que ele detém ante as coisas que representa - tem papel de destaque, associando, finalmente, essa construção teórica com a natureza do dinheiro no capitalismo contemporâneo.; This paper aims to reflect about money in contemporary capitalism, particularly about the question related to the fact that, nowadays, even in the world level, the thing that embodies money (the American dollar) is inconvertible, i.e., doesn't have ballast, doesn't have any relationship, even remote, with a true commodity. The theoretical approach is that offered by Marxian monetary theory...

Dual Reward Prediction Components Yield Pavlovian Sign- and Goal-Tracking

Kaveri, Sivaramakrishnan; Nakahara, Hiroyuki
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
Publicado em 13/10/2014 EN
Relevância na Pesquisa
26.14%
Reinforcement learning (RL) has become a dominant paradigm for understanding animal behaviors and neural correlates of decision-making, in part because of its ability to explain Pavlovian conditioned behaviors and the role of midbrain dopamine activity as reward prediction error (RPE). However, recent experimental findings indicate that dopamine activity, contrary to the RL hypothesis, may not signal RPE and differs based on the type of Pavlovian response (e.g. sign- and goal-tracking responses). In this study, we address this discrepancy by introducing a new neural correlate for learning reward predictions; the correlate is called “cue-evoked reward”. It refers to a recall of reward evoked by the cue that is learned through simple cue-reward associations. We introduce a temporal difference learning model, in which neural correlates of the cue itself and cue-evoked reward underlie learning of reward predictions. The animal's reward prediction supported by these two correlates is divided into sign and goal components respectively. We relate the sign and goal components to approach responses towards the cue (i.e. sign-tracking) and the food-tray (i.e. goal-tracking) respectively. We found a number of correspondences between simulated models and the experimental findings (i.e. behavior and neural responses). First...

Symmetry Breaking: A New Paradigm for Non-Perturbative QFT and Topological Transitions

Ferrante, D. D.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 14/04/2009
Relevância na Pesquisa
25.95%
Symmetry Breaking is used as an "underlying principle", bringing different features of QFT to the foreground. However, the understanding of Symmetry Breaking that is used here is quite different from what is done in the mainstream: Symmetry Breaking is understood as the solution set of a given QFT, its vacuum manifold, or, more modernly, its Moduli Space. Distinct solutions correspond to different sectors, phases, of the theory, which are nothing but distinct foliations of the vacuum manifold, or points in the Moduli Space (for all possible values of the parameters of the theory). Under this framework, three different problems will be attacked: "Mollifying QFT", "Topological Transitions and Geometric Langlands Duality" and "Three-dimensional Gravity and its Phase Transitions". The first makes use of the Moduli Space of the theory in order to construct an appropriate mollification of it, rendering it viable to simulate a QFT in Lorentzian spaces, tackling the "sign problem" heads-on. The connections with Lee-Yang zeros and Stokes Phenomena will be made clear. The second will show that each different phase has its own topology which can be used as Superselection Rule; moreover, the Euler Characteristic of each phase gives it quantization condition. The mechanism via which several dualities work will also be elucidated. The last one will generalize a 0-dimensional QFT...

Experimental Tests of the New Paradigm for Laser Filamentation in Gases

Polynkin, Pavel; Kolesik, Miroslav; Wright, Ewan M.; Moloney, Jerome V.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 12/10/2010
Relevância na Pesquisa
26.17%
Since their discovery in the mid-1990s, ultrafast laser filaments in gases have been described as products of a dynamic balance between Kerr self-focusing and defocusing by free electric charges that are generated via multi-photon ionization on the beam axis. This established paradigm has been recently challenged by a suggestion that the Kerr effect saturates and even changes sign at high intensity of light, and that this sign reversal, not free-charge defocusing, is the dominant mechanism responsible for the extended propagation of laser filaments. We report qualitative tests of the new theory based on electrical and optical measurements of plasma density in femtosecond laser filaments in air and argon. Our results consistently support the established paradigm.; Comment: 4 pages, 4 figures

Símbolo e signo: o dinheiro no capitalismo contemporâneo

Paulani, Leda Maria; Müller, Leonardo André Paes
Fonte: Universidade de São Paulo. Faculdade de Economia, Administração e Contabilidade Publicador: Universidade de São Paulo. Faculdade de Economia, Administração e Contabilidade
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 01/12/2010 POR
Relevância na Pesquisa
25.94%
This paper aims to reflect about money in contemporary capitalism, particularly about the question related to the fact that, nowadays, even in the world level, the thing that embodies money (the American dollar) is inconvertible, i.e., doesn't have ballast, doesn't have any relationship, even remote, with a true commodity. The theoretical approach is that offered by Marxian monetary theory, paradigm that is read in a Hegelian way. We depart from the difference between symbol and sign to show how Marx, moving within the Hegelian framework, could construct a commodities language, in which money - and the autonomy it has in face of the things it represents - has a detached role. Finally we indicate the relation we see between this theoretical construct and the nature of money in contemporary capitalism.; O presente texto busca refletir sobre a natureza do dinheiro no capitalismo contemporâneo, debruçandose particularmente sobre o fato de que, atualmente, não só no plano nacional, mas também no mundial, o objeto que corporifica o dinheiro é inconversível, ou seja, não tem lastro, nem nenhuma relação, por remota que seja, com uma mercadoria de verdade. O enfoque teórico é aquele oferecido pela teoria de Marx, paradigma esse que é tratado a partir de uma leitura hegeliana. Partimos da diferença entre símbolo e signo...

American sign language - Sentence reproduction test: Development & implications

Hauser, Peter; Paludneviciene, Raylene; Supalla, Ted; Bavelier, Daphne
Fonte: Editora Arara Azul Publicador: Editora Arara Azul
Tipo: Proceedings
EN_US
Relevância na Pesquisa
26.07%
The deaf community is widely heterogeneous in its language background. Widespread variation in fluency exists even among users of American Sign Language (ASL), the natural gestural language used by deaf people in North America. This variability is a source of unwanted "noise" in many psycholinguistic and pedagogical studies. Our aim is to develop a quantitative test of ASL fluency to allow researchers to measure and make use of this variability. We present a new test paradigm for assessing ASL fluency modeled after the Speaking Grammar Subtest of the Test of Adolescent and Adult Language, 3'd Edition (TOAL3; Hammill, Brown, Larsen, & Wiederholt, 1994). The American Sign Language-Sentence Reproduction Test (ASL-SRT) requires participants to watch computer-displayed video clips of a native signer signing sentences of increasing length and complexity. After viewing each sentence, the participant has to sign back the sentence just viewed. We review the development of appropriate test sentences, rating procedures and inter-rater reliability, and show how our preliminary version of the test already distinguishes between hearing and deaf users of ASL, as well as native and non-native users.

Providing dynamic virtualized access to grid resources via the Web 2.0 paradigm

Clementi, Luca; Ding, Zhaohui; Krishnan, Sriram; Wei, Xiaohui; Arzberger, Peter; Li, Wilfred
Fonte: Grid Computing Environments (GCE) Publicador: Grid Computing Environments (GCE)
Tipo: Proceedings
EN_US
Relevância na Pesquisa
25.95%
Grid systems provide mechanisms for single sign-on, and uniform APIs for job submission and data transfer, in order to allow the coupling of distributed resources in a seamless manner. However, new users face a daunting barrier of entry due to the high cost of deployment and maintenance. They are often required to learn complex concepts relative to grid infrastructures (credential management, scheduling systems, data staging, etc). To most scientific users, running their applications with minimal changes and yet getting results faster is highly desirable, without having to know much about how the resources are used. Hence, a higher level of abstraction must be provided for the underlying infrastructure to be used effectively. For this purpose, as part of our prior work, we have developed the Opal toolkit for exposing applications on grid resources as simple Web services [1]. Opal provides a basic set of APIs that allows users to execute their deployed applications through graphical user interfaces, or via programmatic means. In this paper, we present our ongoing work to extend the Opal toolkit that enables the creation of an end-to-end infrastructure to dynamically leverage scientific applications on grid resources. In particular, we focus on the following two key extensions. We have developed a command-line syntax description language that can be published via the Opal interface. This enables the creation of dynamic Web forms for job submission...