O EFEITO DO NIVEL SOCIOECONÔMICO NO DESENVOLVIMENTO COGNITIVO INFANTIL

Poster (2011, May)

A inteligência humana pode ser dividida em dois tipos de inteligência: a cristalizada, a qual se baseia em habilidades adquiridas e aprendizado passado, e a fluida, que se refere à capacidade de ... [more ▼]

A inteligência humana pode ser dividida em dois tipos de inteligência: a cristalizada, a qual se baseia em habilidades adquiridas e aprendizado passado, e a fluida, que se refere à capacidade de relacionar idéias e de resolver novos problemas. Esse estudo explora os efeitos do nível socioeconômico (NSE) no desenvolvimento de habilidades cognitivas fluidas e cristalizadas em crianças. A pesquisa contou com um total de 105 participantes de 6 a 8 anos, pertencentes a três diferentes níveis socioeconômicos (alto, médio e baixo) de acordo com o Critério de Classificação Econômica Brasil (ABEP). Foram recrutadas crianças do primeiro e segundo ano do ensino fundamental de escolas particulares, de bairro e públicas em Salvador. Cada grupo continha 35 participantes equiparados em idade, sexo e ano de escolaridade. Os grupos não diferiram significativamente em aspectos nutricionais, estado emocional, peso ao nascer e tempo de gestação. As crianças foram avaliadas por uma extensa bateria de medidas comportamentais que exploraram a inteligência cristalizada (vocabulário, sintaxe e desempenho acadêmico) e a inteligência fluida (memória operacional e raciocínio indutivo). Os resultados apontaram que crianças inseridas em condições desprivilegiadas (baixo NSE) apresentaram desempenho significativamente pior nas medidas de inteligência cristalizada, quando comparadas às crianças que cresceram em ambiente mais favorável (alto NSE); com tamanho do efeito significativo. As crianças de baixo NSE apresentaram, também, um pior desempenho nos testes de inteligência fluida, que, embora significativo, foram menos expressivos que os efeitos correspondentes nas medidas de linguagem. Este estudo mostra que o crescimento em ambientes de baixo NSE constitui um sério fator de risco para o desenvolvimento cognitivo infantil. Sugere, ainda, que alguns sistemas neurocognitivos são mais sensíveis ao NSE que outros: o sistema de linguagem é fortemente impactado pelo NSE, enquanto a memória operacional e a resolução de conflitos são moderadamente influenciadas. Tais achados relacionados ao perfil neurocognitivo do NSE na infância são essenciais no sentido de testar hipóteses mais específicas sobre mecanismos causais e maximizar o efeito de intervenções. Deste modo, pais e escolas desempenham um papel fundamental em prover um ambiente cognitivo estimulante, a fim de otimizar o desenvolvimento intelectual infantil. [less ▲]

O wie Olmi

Article for general public (2012)

O-MI/O-DF Standards as Interoperability Enablers for Industrial Internet: a Performance Analysis

in O-MI/O-DF Standards as Interoperability Enablers for Industrial Internet: a Performance Analysis (2016)

The Industrial Internet should provide means to create ad hoc and loosely coupled information flows between objects, users, services, and business domain systems. However, today’s technologies and ... [more ▼]

The Industrial Internet should provide means to create ad hoc and loosely coupled information flows between objects, users, services, and business domain systems. However, today’s technologies and products often feed ‘vertical silos’ (e.g., vertical/siloed apps), which inevitably result in multiple and non-interoperable systems. Standardization will play an ever-increasing part in enabling information to flow between such vertically-oriented closed systems. This paper presents recent IoT messaging standards, notably O-MI (Open Messaging Interface) and O-DF (Open Data Format), whose initial requirements were defined for enhanced collaboration and interoperability in product lifecycle management. A first analytical model of the minimal traffic load (in bytes) to fulfil the required/basic standard specifications is then proposed. A smart maintenance use case relying on the first version of the standard reference implementation is developed, based on which our analytical model is applied to evaluate the degree of deviation (w.r.t. the standard specifications) of this reference implementation. [less ▲]

OAG induces an additional PKC-, PI3K-, and Rac2-mediated signaling pathway up-regulating NOX2 activity, independently of Ca 2+ entry

in Journal of Leukocyte Biology (2009), 85(4), 638-647

The requirement of calcium ion (Ca(2)(+)) entry for neutrophil NADPH oxidase (NOX2) regulation is clearly established. However, its role in the signaling pathway leading to NOX2 activation is still ... [more ▼]

The requirement of calcium ion (Ca(2)(+)) entry for neutrophil NADPH oxidase (NOX2) regulation is clearly established. However, its role in the signaling pathway leading to NOX2 activation is still elusive. 1-oleoyl-2-acetyl-sn-glycerol (OAG) causes an increase in NOX2 activity and has been shown to directly modulate Ca(2)(+) channels unrelated to the well-known store-operated Ca(2)(+) entry (SOCE) mechanism. In our study, we have investigated the potential role of OAG in Ca(2)(+) influx-mediated NOX2 activity in neutrophil-like-differentiated HL-60 cells to further characterize second signals involved in the regulation of NOX2. OAG inhibited fMLF- and thapsigargin-induced Ca(2)(+) entry, a phenomenon that was not restored by protein kinase C (PKC) or PI3K blockade. Addition of OAG resulted in a rapid decrease of maximal intracellular Ca(2)(+) concentration induced by thapsigargin. Both results suggest that OAG has an inhibitory effect, independent of PI3K and PKC, on the regulation of SOCE. In contrast to SOCE inhibition, OAG-induced NOX2 activation was mediated by PKC and PI3K. Our data establish that both kinases exert their effects through the regulation of Rac2 activity. In addition, OAG potentiated the effect of fMLF on the activation of NOX2 and led to a discernible activity of NOX2 upon thapsigargin stimulation. In conclusion, our results demonstrate that an additional PKC- and/or PI3K-dependent signal may act in synergy with Ca(2)(+) influx to trigger NOX2 activation. [less ▲]

Oberflächenübersetzung: The Poetics and Cultural Politics of Homophonic Translation

in Critical Multilingualism Studies (2015), 3(1), 7-25

This article reassesses the poetics of homophonic translation in order to come to terms with its (culture-)political effects. In a close reading of poems by Ernst Jandl and Oskar Pastior, Dembeck shows ... [more ▼]

This article reassesses the poetics of homophonic translation in order to come to terms with its (culture-)political effects. In a close reading of poems by Ernst Jandl and Oskar Pastior, Dembeck shows that these authors’ homophonic translations are by no means homogenous in the methods they apply, but rather make use of various, complex strategies of linguistic transformation simultaneously. This constant shifting between strategies enables these poets to make their texts the medium for (culture-)political movements that are, in very different ways, opposed to the presuppositions of monolingualism. Homophonic translation thus proves to be more than just a mere language game without semantic and political impact. [less ▲]

Obermueller/Werner/Winden - Die Hauptversammlung der Aktiengesellschaft, Buchbesprechung

in Zeitschrift für Bank- und Kapitalmarktrecht (2002), (4.Auflage), 1134

Obfuscating LLVM Intermediate Representation Source Code with NSGA-II

in 15th Intl. Conf. on Computational Intelligence in Security for Information Systems (CISIS'22) (2022, September)

With the generalisation of distributed computing paradigms to sustain the surging demands for massive processing and data-analytic capabilities, the protection of the intellectual property tied to the ... [more ▼]

With the generalisation of distributed computing paradigms to sustain the surging demands for massive processing and data-analytic capabilities, the protection of the intellectual property tied to the executed programs transferred onto these remote shared platforms becomes critical. A more and more popular solution to this problem consists in applying obfuscating techniques, in particular at the source code level. Informally, the goal of obfuscation is to conceal the purpose of a program or its logic without altering its functionality, thus preventing reverse-engineering on the program even with the help of computing resources. This allows to protect software against plagiarism, tampering, or finding vulnerabilities that could be used for different kinds of attacks. The many advantages of code obfuscation, together with its low cost, makes it a popular technique. This paper proposes a novel methodology for source code obfuscation relying on the reference LLVM compiler infrastructure that can be used together with other traditional obfuscation techniques, making the code more robust against reverse engineering attacks. The problem is defined as a Multi-Objective Combinatorial Optimization (MOCO) problem, where the goal is to find sequences of LLVM optimizations that lead to highly obfuscated versions of the original code. These transformations are applied to the back-end pseudo- assembly code (i.e., LLVM Intermediate Representation), thus avoiding any further optimizations by the compiler. Three different problem flavours are defined and solved with popular NSGA-II genetic algorithm. The promising results show the potential of the proposed technique. [less ▲]

Objectifs et compétences dans l’Union européenne

Book published by Bruylant (2013)

Interaction between objectives and competences of the European Union under the perspective of the principle of conferral. Legal basis of EU action. Member State's obligations beyond EU competence.

L'objectivité dans la théorie d'Umberto Eco

in Travaux en cours. Revue de l'UFR LAC. Université Paris Diderot (2010)

Objects and language in transcontextual communication

in Social Semiotics (2015), 25(4), 387-532

Contributions to this special issue explore the role of objects and language in communication across contexts from interdisciplinary angles, including sociolinguistics, education, anthropology and ... [more ▼]

Contributions to this special issue explore the role of objects and language in communication across contexts from interdisciplinary angles, including sociolinguistics, education, anthropology and sociology. The case studies range from medical to educational settings and investigate how meaning is constructed and projected withing and across contexts. [less ▲]