Error analyses reveal contrasting deficits in “theory of mind”: neuropsychological evidence from a 3-option false belief task

Perspective taking is a crucial ability that guides our social interactions. In this study, we show how the specific patterns of errors of brain-damaged patients in perspective taking tasks can help us further understand the factors contributing to perspective taking abilities. Previous work (e.g., Samson, Apperly, Chiavarino, & Humphreys, 2004; Samson, Apperly, Kathirgamanathan, & Humphreys, 2005) distinguished two components of perspective taking: the ability to inhibit our own perspective and the ability to infer someone else’s perspective. We assessed these components using a new nonverbal false belief task which provided different response options to detect three types of response strategies that participants might be using: a complete and spared belief reasoning strategy, a reality-based response selection strategy in which participants respond from their own perspective, and a simplified mentalising strategy in which participants avoid responding from their own perspective but rely on inaccurate cues to infer the other person’s belief. One patient, with a self-perspective inhibition deficit, almost always used the reality-based response strategy; in contrast, the other patient, with a deficit in taking other perspectives, tended to use the simplified mentalising strategy without necessarily transposing her own perspective. We discuss the extent to which the pattern of performance of both patients could relate to their executive function deficit and how it can inform us on the cognitive and neural components involved in belief reasoning.

Cross-linguistic influences in the phonetic and lexical component in English, Baque and Spanish: Contextual and individual factors in language acquisition and attrition.

350 p.

Adaptivity and a posteriori error control for bifurcation problems I: the Bratu problem

This article is concerned with the numerical detection of bifurcation points of nonlinear partial differential equations as some parameter of interest is varied. In particular, we study in detail the numerical approximation of the Bratu problem, based on exploiting the symmetric version of the interior penalty discontinuous Galerkin finite element method. A framework for a posteriori control of the discretization error in the computed critical parameter value is developed based upon the application of the dual weighted residual (DWR) approach. Numerical experiments are presented to highlight the practical performance of the proposed a posteriori error estimator.

Energy norm a-posteriori error estimation for hp-adaptive discontinuous Galerkin methods for elliptic problems in three dimensions

We develop the energy norm a-posteriori error estimation for hp-version discontinuous Galerkin (DG) discretizations of elliptic boundary-value problems on 1-irregularly, isotropically refined affine hexahedral meshes in three dimensions. We derive a reliable and efficient indicator for the errors measured in terms of the natural energy norm. The ratio of the efficiency and reliability constants is independent of the local mesh sizes and weakly depending on the polynomial degrees. In our analysis we make use of an hp-version averaging operator in three dimensions, which we explicitly construct and analyze. We use our error indicator in an hp-adaptive refinement algorithm and illustrate its practical performance in a series of numerical examples. Our numerical results indicate that exponential rates of convergence are achieved for problems with smooth solutions, as well as for problems with isotropic corner singularities.

Error estimation and adaptive mesh refinement for aerodynamic flows

This lecture course covers the theory of so-called duality-based a posteriori error estimation of DG finite element methods. In particular, we formulate consistent and adjoint consistent DG methods for the numerical approximation of both the compressible Euler and Navier-Stokes equations; in the latter case, the viscous terms are discretized based on employing an interior penalty method. By exploiting a duality argument, adjoint-based a posteriori error indicators will be established. Moreover, application of these computable bounds within automatic adaptive finite element algorithms will be developed. Here, a variety of isotropic and anisotropic adaptive strategies, as well as $hp$-mesh refinement will be investigated.

Aspectos sociodemográficos y laborales en el error asistencial de enfermería

Objetivo: Valorar cómo influyen las características personales y laborales de los profesionales de enfermería en el error asistencial en hospitalización. Método: Estudio descriptivo transversal realizado en 254 enfermeros de los hospitales públicos de Zaragoza, España. Se administró un cuestionario que contenía preguntas sobre los datos sociodemográficos y laborales del profesional y el error sanitario. Resultados: La muestra estuvo formada predominantemente por mujeres (un 88,6%) con una edad media de 37,4 años. El 45,2% tiene una experiencia profesional menor de 10 años, existiendo un alto índice de movilidad en el puesto de trabajo. Existe una asociación entre la edad, el sexo, la movilidad en el servicio hospitalario y el número de errores cometidos (p<0,05). La sobrecarga laboral y la presión por parte de familiares y pacientes son los factores del entorno laboral que más influyen en el momento de cometer un error asistencial. Conclusiones: Las tasas de error en la práctica enfermera hospitalaria están influenciadas por las características del trabajador y el entorno laboral. Para disminuir su frecuencia habrá que proporcionar a los profesionales la formación adecuada al servicio y prevenir los factores de riesgo modificables como el exceso de cargas de trabajo y la presión del entorno social laboral.

Adaptivity and a posteriori error control for bifurcation problems II: Incompressible fluid flow in open systems with Z_2 symmetry

In this article we consider the a posteriori error estimation and adaptive mesh refinement of discontinuous Galerkin finite element approximations of the bifurcation problem associated with the steady incompressible Navier-Stokes equations. Particular attention is given to the reliable error estimation of the critical Reynolds number at which a steady pitchfork or Hopf bifurcation occurs when the underlying physical system possesses reflectional or Z_2 symmetry. Here, computable a posteriori error bounds are derived based on employing the generalization of the standard Dual-Weighted-Residual approach, originally developed for the estimation of target functionals of the solution, to bifurcation problems. Numerical experiments highlighting the practical performance of the proposed a posteriori error indicator on adaptively refined computational meshes are presented.

Carbon reduction activism in the UK: lexical creativity and lexical framing in the context of climate change

This article examines discourses associated with a new environmental movement, “Carbon Rationing Action Groups” (CRAGs). This case study is intended to contribute to a wider investigation of the emergence of a new type of language used to debate climate change mitigation. Advice on how to reduce one's “carbon footprint,” for example, is provided almost daily. Much of this advice is framed by the use of metaphors and “carbon compounds”—lexical combinations of at least two roots—such as “carbon finance” or “low carbon diet.” The study uses a combination of tools from frame analysis and lexical pragmatics within the general framework of ecolinguistics to compare and contrast language use on the CRAGs' website with press coverage reporting on them. The analysis shows how the use of such lexical carbon compounds enables and facilitates different types of metaphorical frames such as dieting, finance and tax paying, war time rationing, and religious imperatives in the two corpora.

Quasi-a priori truncation error estimation in the DGSEM

In this paper we show how to accurately perform a quasi-a priori estimation of the truncation error of steady-state solutions computed by a discontinuous Galerkin spectral element method. We estimate the spatial truncation error using the ?-estimation procedure. While most works in the literature rely on fully time-converged solutions on grids with different spacing to perform the estimation, we use non time-converged solutions on one grid with different polynomial orders. The quasi-a priori approach estimates the error while the residual of the time-iterative method is not negligible. Furthermore, the method permits one to decouple the surface and the volume contributions of the truncation error, and provides information about the anisotropy of the solution as well as its rate of convergence in polynomial order. First, we focus on the analysis of one dimensional scalar conservation laws to examine the accuracy of the estimate. Then, we extend the analysis to two dimensional problems. We demonstrate that this quasi-a priori approach yields a spectrally accurate estimate of the truncation error.

Optimization of quantum states for signaling across an arbitrary qubit noise channel with minimum-error detection

International audience

A longitudinal study on the lexical sophistication and sentence length in Finnish upper secondary school students’ English compositions.

The aim of the present study was to find out the level of lexical sophistication and the mean length of sentences used in compositions written by Finnish upper secondary school students of English. In addition, the present study investigated the possible relationship between the two abovementioned variables. The study at hand was longitudinal: as data, a set of 50 compositions were collected in 2014 from the same writers both in the first and the final year of upper secondary school, 25 in the first year and 25 in the final year. In the analysis, an internet-based program called VocabProfile was utilized in order to find out the lexical sophistication of the investigated students. To find out the mean length of sentence and the relationship between these two, I used Microsoft Excel. Findings of the present study include a minor decrease in the use of less frequent vocabulary and a slight increase in the use of the two most frequently appearing thousand words of English: both of these changes were 1.99 percentage points. As for the mean length of sentence, it grew by 1.28 words during upper secondary school. As for the relationship between the two variables, no clear correlations could be found. It became, however, relatively clear that the topic of the composition might have an effect on the results. Thus more research is needed to fully see the effect of lexical sophistication and mean length of sentence on one another. In addition, future research would benefit greatly if all investigated students wrote on the same topic.

Determinar os níveis de conhecimento linguístico-lexical à entrada e saída do 1º ano de escolaridade e a sua influência na aprendizagem da leitura e escrita

Esta tese, elaborada a partir do nosso interesse em determinar os níveis de conhecimento linguístico das crianças à entrada e saída do primeiro ano de escolaridade, teve como objetivo verificar de que forma esse conhecimento influencia a aprendizagem da leitura e da escrita. Para tal, realizámos parte de dois testes que permitem avaliar as competências linguísticas de crianças que possuem o Português como Língua Materna, o Teste de Identificação de Competências Linguísticas (TICL), de Fernanda Leopoldina Viana (2004) e o Teste de Avaliação da Linguagem Oral (TALO), de Inês Sim-Sim (2003) numa turma a iniciar e a concluir o primeiro ano de escolaridade. Com a análise de dados almejamos concluir que os alunos que apresentam um capital lexical mais variado à entrada no primeiro Ciclo do Ensino Básico apresentam melhores resultados na aprendizagem da leitura e da escrita.

Identificación de riesgos de error material en auditorías externas de estados financieros, aplicadas por los auditores independientes del municipio de San Salvador.

La presente investigación tiene sus orígenes desde el siglo XV, cuando se presumía que la auditoría fue incentivada por la necesidad del hombre de llevar a cabo actividades de observación, investigación, comprobación y verificación de la información financiera generada por las empresas; para ser más concretos nació en el seno de algunas familias pudientes de Inglaterra, otorgando a la palabra “Auditor” el significado de “Persona que Oye”. Desde hace ya algunos años, el ejercicio de los contadores públicos es vital en el proceso de auditorías de estados financieros, lo cual conlleva a la necesidad de estructurar a profundidad aspectos relevantes para el desarrollo de las auditorias, entre los cuales el riesgo de error material es fundamental, no solo por la importancia del tema, sino además porque son ellos quienes expresan una opinión acerca de la razonabilidad de las cifras de la información financiera sujeta a revisión y estudio. Y es ahí donde surge el IAASB (International Auditing and Assurance Standards Board), que es el ente encargado de emitir normas y lineamientos de auditoría y atestiguamiento para uso de todos los profesionales, en virtud de un proceso de auditoría de establecimiento de normas, el cual proporciona información de interés público sobre el desarrollo de auditorías, incluyendo en este como identificar riesgos de error material mediante el entendimiento de la entidad y su entorno. La investigación de esta problemática, surgió con la necesidad de los contadores de herramientas de apoyo para ejercer la profesión, que se apegan a la normativa técnica contable de nuestro país; por lo que objetivo principal que persigue esta investigación es diseñar cuestionarios de control interno para la identificación de riesgos de error material en auditorías externas de Estados Financieros, aplicadas por auditores independientes del municipio de San Salvador. Durante la investigación de campo, se notó que la mayoría de los auditores utiliza diferentes técnicas para identificar riesgos de error material, lo que da la pauta que es indispensable contar con una herramienta de apoyo, que incorpore el entendimiento de la entidad y su entorno, así como el control interno, además de la aplicación de las políticas para el logro de sus objetivos, estos aspectos ayudan a detectar los fraudes y errores, no olvidando que las investigaciones con la administración son de mucha utilidad. Uno de los obstáculos en la entrevista fue la falta de recopilación de información sobre cuáles son las técnicas que utilizan estos auditores para identificar riesgos. Finalmente, se concluye que los conocimientos técnicos sobre el riesgo de negocio son primordiales para los auditores, que el entendimiento de riesgos de errores materiales es fundamental al momento de ejecutar auditorías externas de estados financieros y que la evaluación del control interno y los riesgos del negocio son importantes para la identificación de errores materiales. Para lo cual se recomienda, establecer una planificación de auditoría con base al análisis de la entidad y de los posibles riesgos de negocio, mediante el análisis del entorno. Es indispensable que los profesionales que ejercen la auditoría, cuenten con una base técnica que les permita identificar estratégicamente aquellos riesgos de error material que afecten adversamente el logro de los objetivos que persigue la entidad, sin dejar atrás el estudio y evaluación del control interno de la entidad auditada, ya que se consideran puntos clave para identificar riesgos.

Resolución 076 del 22 de mayo de 2012: Por medio de la cual se dejan sin efecto las renovaciones de unas matriculas mercantiles por error operativo

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Quantum error correction with the IBM quantum experience

Mentre si svolgono operazioni su dei qubit, possono avvenire vari errori, modificando così l’informazione da essi contenuta. La Quantum Error Correction costruisce algoritmi che permettono di tollerare questi errori e proteggere l’informazione che si sta elaborando. Questa tesi si focalizza sui codici a 3 qubit, che possono correggere un errore di tipo bit-flip o un errore di tipo phase-flip. Più precisamente, all’interno di questi algoritmi, l’attenzione è posta sulla procedura di encoding, che punta a proteggere meglio dagli errori l’informazione contenuta da un qubit, e la syndrome measurement, che specifica su quale qubit è avvenuto un errore senza alterare lo stato del sistema. Inoltre, sfruttando la procedura della syndrome measurement, è stata stimata la probabilità di errore di tipo bit-flip e phase-flip su un qubit attraverso l’utilizzo della IBM quantum experience.