Trace-level reuse

Trace-level reuse is based on the observation that some traces (dynamic sequences of instructions) are frequently repeated during the execution of a program, and in many cases, the instructions that make up such traces have the same source operand values. The execution of such traces will obviously produce the same outcome and thus, their execution can be skipped if the processor records the outcome of previous executions. This paper presents an analysis of the performance potential of trace-level reuse and discusses a preliminary realistic implementation. Like instruction-level reuse, trace-level reuse can improve performance by decreasing resource contention and the latency of some instructions. However, we show that trace-level reuse is more effective than instruction-level reuse because the former can avoid fetching the instructions of reused traces. This has two important benefits: it reduces the fetch bandwidth requirements, and it increases the effective instruction window size since these instructions do not occupy window entries. Moreover, trace-level reuse can compute all at once the result of a chain of dependent instructions, which may allow the processor to avoid the serialization caused by data dependences and thus, to potentially exceed the dataflow limit.Peer ReviewedPostprint (published version

FIRM DETERMINANTS IN NEW PRODUCT INTRODUCTION: A STUDY THROUGH SURVIVAL ANALYSIS

The literature has broadly discussed the advantages obtained by pioneer firms under the concept of “first mover advantages”. However, less attention has been paid to the study of the factors that determine entry timing. The present paper analyzes the firm’s determinants in the introduction of a product innovation. The results obtained for the Cox regression in the case of the Italian ceramic tiles industry show that technological resources and firm size have a positive and significant influence on the likelihood of the innovation being introduced, while other factors, i.e. financial and marketing resources, have no influence on the adoption of the innovation.survival analysis, determinants of entry timing, resources, first mover advantages.

La formación de bibliotecarios, archiveros y documentalistas en una revista de la UNESCO. Bibliografía anotada.

Sin resume

Tripod-shaped penta (p-phenylene)s for the functionalization of silicon surfaces

In order to obtain nanostructured thin films to be used in biosensor devices, several chemical functionalization methods have been developed, such as Click chemistry or Suzuki carbon-carbon coupling reactions on surfaces.1 With the aim to control the orientation and spacing between grafted functional groups on a surface, tripodal oligo (p-phenylene)s have become the ideal anisotropic adsorbates due to their shape-persistent and self-standing characteristics.2 Here we report the synthesis and characterization of several tripod-shaped oligo(p-phenylene)s molecules with legs composed of five phenylene units, compounds 1, 2 and 3. In these structures, each leg is end-capped with an NH-Boc, NH2 and N3 group, respectively. The functional arm contains an acetylene group. The presented synthesis has as key step the Pd-catalyzed Suzuki cross-coupling reaction. In particular, a iodine derivative from the silicon core molecule reacts with the appropriate tetra(p-phenylene) boron derivative, thus generating the final tripod-shaped structure. The azide end-capped leg in 3 is specifically designed for its covalent incorporation on alkynyl terminated silicon surfaces by an easy and reproducible way. As a preliminary study, we present the alkynyl-functionalized silicon wafers nanostructuration with tripod 3 through the cooper catalyzed alkyne-azide cycloaddition (CuAAC) click reaction.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Review of progress in the study of the self-perceptions of children with Attention Deficit Disorder with Hyperactivity (ADHD)

El estudio sistemático de las autopercepciones en los niños con Trastorno por Déficit de Atención con Hiperactividad (TDAH) tiene un origen reciente y ha dado lugar a resultados contradictorios. Sin embargo, al incluirse una medida objetiva del desempeño del niño, se encontró que estos niños presentan una tendencia a sobrestimar sus competencias en relación con su desempeño real. Este trabajo se propone presentar una revisión de las investigaciones que abordaron empíricamente el estudio de los mecanismos explicativos en el sesgo positivo ilusorio (SPI) que presentan los niños con TDAH. Se realizó un trabajo de revisión de tipo agregativo. Se consultaron las bases de datos PSYCINFO, ERIC, PUBMED, REDALYC, SCIELO, PUBMED, DIALNET, CLASE Y LILACS. Los términos de búsqueda utilizados fueron: autopercepción, autoevaluación, autoconcepto, autoestima, Trastorno por Déficit de Atención con Hiperactividad, niños y los mismos términos en inglés. La búsqueda mostró que existen evidencias de que este sesgo positivo en sus autopercepciones cumple una función de autoprotección frente a sus habituales fracasos y que está relacionado con las fallas en las funciones ejecutivas asociadas al trastorno. Asimismo, tiene un fuerte impacto en el ajuste psicosocial de estos niños.L'étude systématique de la perception de soi chez les enfants atteints d'un Trouble Téficitaire de l'Attention avec Hyperactivité (TDAH) est d'origine récente et a abouti à des résultats contradictoires. Toutefois, en incluant une mesure objective de la performance, nous avons constaté que ces enfants ont tendance à surestimer leurs compétences par rapport à leur performance réelle. Cet article se propose de présenter un avis de recherche qui s'adresse étudier empiriquement les mécanismes explicatifs de la partialité illusoire positive (SPI) qui ont des enfants atteints de TDAH. Nous avons effectué un examen de type agrégatif de travail. Ont été consultés PSYCINFO, ERIC, PUBMED, REDALYC, SCIELO, PUBMED, DIALNET, CLASE et LILACS. Les termes de recherche utilisés sont: la perception de soi, l'auto, l'estime de soi, le trouble déficitaire de l'attention avec hyperactivité avec soi, les enfants et les mêmes termes en anglais. La recherche a montré qu'il existe des preuves que ce biais positif dans la perception de soi joue un rôle dans l'auto-protection de ses échecs habituels et les échecs associés aux fonctions exécutives associés à la maladie. Il a également un fort impact sur l'ajustement psychosocial de ces enfants. Mots clefs: Trouble Déficitaire de l'Attention avec Hyperactivité, la perception de soi, image de soi, les préjugés illusoire positif, enfant.O estudo sistemático das autopercepções nas crianças com Transtorno de Déficit de Atenção com Hiperatividade (TDAH) tem uma origem recente e resultados contraditórios. No entanto, ao se incluir uma medida objetiva do desempenho da criança, observou-se que estas apresentam uma tendência a estimar suas competências acima do constatado no exame de seu desempenho real. Este trabalho teve como objetivo apresentar uma revisão das pesquisas que abordam empiricamente o estudo dos mecanismos explicativos do viés positivo ilusório (VPI) que apresentam as crianças com TDAH. Realizou-se uma revisão sistemática. Consultaram-se as bases de dados PSYCINFO, ERIC, PUBMED, REDALYC, SCIELO, PUBMED, DIALNET, CLASE e LILACS. Os termos da busca foram autopercepção, autoavaliação, autoconceito, autoestima, TDAH, crianças e os mesmos termos em inglês. A busca mostrou que existem evidências de que este viés positivo em suas autopercepções cumpre uma função de autoproteção frente às suas habituais dificuldades e que está relacionado aos déficits em funções executivas associados ao transtorno. Apresenta, ainda, um forte impacto no ajuste psicossocial destas crianças.Systematic self-perception study in children suffering from Attention Deficit Disorder with Hyperactivity (ADHD) has a recent origin and has led to contradictory results. However, by including an objective measure of child’s performance, it was found that these children have a tendency to overestimate their competences in relation to their real performance. This paper aims to present a review of researches that have empirically studied the mechanisms explaining the positive illusory bias (PIB) in children with ADHD. A summarizing review study was made. PSYCINFO, ERIC, PUBMED, REDALYC, SCIELO, PUBMED, DIALNET, CLASE and LILACS databases were consulted. The search terms used were: selfperception, self-evaluation, self-concept, self-esteem, Attention Deficit Disorder with Hyperactivity, children and the same terms in English. The review showed that there is evidence that this positive bias in their self-perceptions has the role to protect them against their common failure and it is linked with executive dysfunction associated with the disorder. It also has a strong impact on the psychosocial adjustment of these children.Fil: Molina, María Fernanda. Universidad de Buenos Aires. Facultad de Psicología. Instituto de Investigaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Escribir para aprender. Disciplinas y escritura en la escuela secundaria. Federico Navarro y Andrea Revel Chion. Buenos Aires, Paidós, 2013.

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Del orden social y del orden del universo: la llamada religión megalítica y su uso ideológico por las comunidades de los milenios IV-III a.C. a través del análisis del significado de sus monumentos funerarios

This paper puts forward a theoretical reflection on the beliefs and religious mentality of the communities of megalith and collective burial caves builders in Western Europe. We emphasize problems such as the social and ideological interpretation of these burials, not only as spaces for the transformation of the dead, but also as an expression of the ideology of the emergent power groups.En este artículo se presenta una reflexión acerca de las características genéricas del mundo de las creencias y la mentalidad religiosa de las comunidades que levantaron los megalitos y cuevas funerarias colectivas en el occidente europeo. Se desarrollan en él cuestiones como la interpretación del significado social e ideológico de dichas tumbas, no sólo en tanto que los espacios para la transformación de los muertos sino también como expresiones de la ideología de los grupos de poder emergentes

Contexto arqueológico y urbanístico de la epigrafía estatuaria de culto imperial en la Bética

In this paper we propose an analysis of epigraphic material from some cities of Roman Baetica where nowadays exist urban data enough to at least allow us to relate them with their statuary context. To set the geographical and chronological distribution of the honorific inscriptions related to the imperial cult, we have a total of thirty-four inscriptions distributed within four legal conventus. The work is completed with the study of dedications to deities and those in honor of the emperor and the domus Augusta, by priestly charges involved in the worship of these civic cults.Pretendemos con este trabajo efectuar un análisis del material epigráfico de algunas ciudades de la Bética sobre las que actualmente existen suficientes datos topográficos y urbanísticos que al menos nos permitan relacionarlas con sus soportes estatuarios. Para establecer este reparto geográfico y cronológico de la epigrafía honorífica relacionada con el culto imperial, contamos con un total de treinta y cuatro inscripciones que se distribuyen dentro de los cuatro conventus jurídicos. El trabajo se completa con el estudio de las dedicaciones tanto a divinidades como las realizadas en honor del emperador y la domus Augusta, por cargos sacerdotales que participan en la veneración de estos cultos cívicos

Una Didáctica Especial para un Grupo Peculiar. La Educación de Adultos en Melilla

A menudo, los adultos que acceden a programas de educación, afrontan su formación compensatoria "aprovechando" las metodologías y los materiales de otros niveles educativos ajenos a sus propias y peculiares características. Sin embargo, es sabido que no puede haber ima didáctica específica sin considerar al grupo destinatario, que, en el caso de\ud los adultos, es, a veces, relegado a im segundo plano. Generalmente, este grupo puede tener una dificultad añadida: que gran parte de sus integrantes procedan de otros países con distinto idioma, como en el caso de Melilla, con los hablantes de amazige.\ud Este artículo pretende esbozar las bases de una didáctica destinada a la Educación de\ud Adultos, así como reivindicar su contemplación en la formación de los futuros maestros

Partial extinction and reinstatement

Fear extinction is not permanent but more vulnerable than the original fear memory, as relapse phenomena have traditionally shown. Partial extinction has been proposed as a strategy that may serve to mitigate relapses. Partial extinction differs from the standard procedure as it includes the occasional presentation of CS-US trials at the beginning of the extinction training. The present experiment, using an aversive differential conditioning procedure, evaluates whether partial extinction can reduce reinstatement, a specific form of relapse. The results showed that partial extinction did not mitigate reinstatement but proved effective to diminish the magnitude of the US expectation after a first reacquisition trial in a final test phase. The results reported are more consistent with theories that conceives extinction as the acquisition of new inhibitory learning rather than the erasure of the original conditioning.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech