1,720,955 research outputs found
Lenguaje de programación cuántico QML con historial, reversibilidad y cálculo lambda con mediciones
Full text linkResearch in quantum computing allows us to think about computing in a new and different way, having the ambition to solve problems more efficiently than with classical computing. Now a days, conventional tasks cannot be practically developed in a quantum computer, however, it is possible to think and develop abstractions of them, for example through quantum programming languages, being the core of this research, in particular the Quantum Meta Language (QML). We present a semantic model that incorporates reversibility via a history track for the quantum programming language QML, considering classical and quantum data, omitting measurements. With the history, the reversibility can be explicitly and naturally applied from the proposed rules. The language is worked first with classical data and extrapolated to quantum data. Also, the QML language and quantum lambda calculus were linked, giving as product a syntax with quantum measurements, operational semantics, typing rules and some formal proofs.La investigación en el cómputo cuántico permite pensar de una forma nueva y diferente la computación, teniendo la ambición de solucionar problemas de manera más eficiente que con el cómputo clásico. Por ahora, las tareas convencionales no se pueden desarrollar de manera práctica en una computadora cuántica, sin embargo, sí se puede pensar y desarrollar abstracciones de éstas, por ejemplo a través de lenguajes de programación cuánticos, siendo el núcleo de esta investigación, en particular el lenguaje Quantum Meta Language (QML). Se presenta un modelo semántico que incorpora reversibilidad a través de una pista de historial para el lenguaje de programación cuántico QML, considerando datos clásicos y cuánticos, omitiendo mediciones. Con la pila de historial, la reversibilidad puede aplicarse explícita y naturalmente a partir de las reglas propuestas. El lenguaje se trabaja gradualmente, inicialmente con datos clásicos y un procedimiento similar al clásico se extrapola con datos cuánticos. Además, se vincularon los lenguajes QML y cálculo lambda cuántico, dando como producto una sintaxis con mediciones cuánticas, semántica operacional, reglas de tipado y ciertas pruebas formales
Un viaje al cómputo cuántico
No full textLa computación cuántica es un área que implementa principios de la mecánica cuántica, en la cual las investigaciones han evidenciado una ventaja sobre la forma en que el cómputo clásico aborda desafíos. El contexto cuántico pronostica avances grandiosos que revolucionarían la forma en que se concibe el cómputo y la forma en que trabajamos. Palabras clave: cómputo cuántico, computación, supremacía cuántica, ciencia.
Quantum computing is an area that implements principles of quantum mechanics, in which research has shown an advantage over the way classical computation addresses challenges. The quantum context predicts breakthroughs that will revolutionize the way computation is conceived and the way we work.
Keywords: Quantum computing, computation, quantum supremacy, science
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
