Hasil untuk "General bibliography"

G. Pólya

A. Karmiloff-Smith

Chun-Feng Huang, Brian Bih-Jeng Chang, I-Hsuan Hwang et al.

Background: Emphasis on primary health care (PHC) is the most efficient and economical approach to achieving universal health coverage, and should serve as its foundation. The aim of the study is to examine academic publications from 2011 to 2023 in the Asia-Pacific region (APR) using the Web of Science (WoS) subject category of PHC. Methods: Academic papers in the WoS PHC category published in the APR from 2011 to 2023 were retrieved and analyzed, including papers published in the Science Citation Index-Expanded and the Social Science Citation Index. Results: A total of 5172 papers were published in the WoS PHC category from APR onwards. The annual number of publications and their citations increased from 2011 to 2023. Australia led PHC publications in the APR with 3918 publications (75.75% of APR regional output). New Zealand had the highest number of citations per paper (14.54) and the highest mean impact factor (3.25 ± 1.70). Publications in the WoS PHC category also covered a wide range of topics, including Medicine General Internal (70.86%), Health Care Sciences Services (18.10%), Health Policy Services (17.67%), and Public Environmental Occupational Health (17.67%), demonstrating the breadth of PHC research. Conclusion: The annual number of publications and their citations in the WoS PHC category from the APR increased from 2011 to 2023. Australia and New Zealand have a significant presence in the PHC publications in the APR.

Joana Andre Machuza-Matenga, Tamara de Souza Brandão Guaraldo, Juliana Colussi Ribeiro et al.

Esta pesquisa visa discutir os desafios e competências necessárias para o profissional da informação na mediação da informação com a geração Z. Para este trabalho realizou-se um estudo qualitativo- exploratório e uma pesquisa bibliográfica a partir de uma revisão sistemática da literatura na base de dados da BRAPCI. Os resultados da pesquisa indicam que os desafios dos profissionais estão ligados ao domínio da tecnologia e Internet não só para a busca do conhecimento, mas sobretudo para potencializar a competência em informação e orientar os sujeitos informacionais na busca pela informação. Em relação às competências necessárias destacam-se as competências informacionais, tecnológicas, mediáticas e de relacionamento para que o profissional da informação possa realizar a mediação da informação, a partir do entendimento do processo da mediação que envolve a ação ativa tanto do profissional como do sujeito informacional.     

Hisaaki Shinkai, Masao Takamoto, Hidetoshi Katori

Optical lattice clocks (OLCs) enable us to measure time and frequency with a fractional uncertainty at $10^{-18}$ level, which is 2 orders of magnitude better than Cs clocks. In this article, after briefly reviewing OLCs and the history of testing the fundamental principles of general relativity, we report our experiments of measuring the gravitational redshift between RIKEN and The University of Tokyo, and at Tokyo Skytree using transportable OLCs. We also discuss a couple of future applications of OLCs, such as detecting gravitational waves in space and relativistic geodesy. The possibility of testing second-order parametrized post-Newtonian potential around the Earth is also mentioned.

P. Edwards, T. C. Whitmore

S. Fulling, U. Kasper

Philippe C. Baveye

n/a

Beatriz Ferrús Antón

El Correo de Ultramar. Parte Literaria e Ilustrada Reunidas (1853-1886), publicado en París por editores españoles y pensado para difundirse en América Latina, reúne un importante conjunto de textos de literatura de viajes, con formatos diversos y destinos múltiples. Este artículo estudia el periódico como repositorio de ese género literario. Se centra en los viajes por España como ejemplo de las negociaciones identitarias que tenían lugar en la época, a causa de los cambios geopolíticos. Los recorridos por la península ibérica nos conducen a ciudades y paisajes con destacado significado nacional, que servían para reforzar la comunidad imaginada, además de divulgar una visión positiva del país, alejada de la tópica difundida por los visitantes extranjeros. Los textos dibujan un territorio con pasado glorioso y notables avances, donde comienza a emerger el turismo moderno.

Yulong Li, Andy Zeng, Shuran Song

Most successes in autonomous robotic assembly have been restricted to single target or category. We propose to investigate general part assembly, the task of creating novel target assemblies with unseen part shapes. As a fundamental step to a general part assembly system, we tackle the task of determining the precise poses of the parts in the target assembly, which we we term ``rearrangement planning''. We present General Part Assembly Transformer (GPAT), a transformer-based model architecture that accurately predicts part poses by inferring how each part shape corresponds to the target shape. Our experiments on both 3D CAD models and real-world scans demonstrate GPAT's generalization abilities to novel and diverse target and part shapes.

Dimitrios Psaltis

The Kerr-Newman metric is the unique vacuum solution of the General Relativistic field equations, in which any singularities or spacetime pathologies are hidden behind horizons. They are believed to describe the spacetimes of massive astrophysical objects with no surfaces, which we call black holes. This spacetime, which is defined entirely by the mass, spin, and charge of the black hole, gives rise to a variety of phenomena in the motion of particles and photons outside the horizons that have no Newtonian counterparts. Moreover, the Kerr-Newman spacetime remains remarkably resilient to many attempts in modifying the underlying theory of gravity. The monitoring of stellar orbits around supermassive black holes, the detection of gravitational waves from the coalescence of stellar-mass black holes, and the observation of black-hole shadows in images with horizon-scale resolution, all of which have become possible during the last decade, are offering valuable tools in testing quantitatively the predictions of this remarkable solution to Einstein's equations.

S. Prater, Paul Barruel

Francisca Suau-Jiménez, Francisco Ivorra-Pérez

The recent COVID-19 pandemic has triggered an enormous stream of information. Parascientific digital communication has pursued different avenues, from mainstream media news to social networking, at times combined. Likewise, citizens have developed new discourse practices, with readers as active participants who claim authority. Based on a corpus of 500 reader comments from <i>The Guardian</i>, we analyse how readers build their authorial voice on COVID-19 news as well as their agentive power and its implications. Methodologically, we draw upon stance markers, depersonalisation strategies, and heteroglossic markers, from the perspective of discursive interpersonality. Our findings unearth that stance markers are central for readers to build authority and produce content. Depersonalised and heteroglossic markers are also resorted, reinforcing readers’ authority with external information that mirrors expert scientific communication. Conclusions suggest a strong citizen agentive power that can either support news articles, spreading parascientific information, or challenge them, therefore, contributing to produce pseudoscientific messages.

M. Halliday, J. Webster

Bertrand MOCQUET

The advent of digital technologies in academic organizations is not new. Several movements have taken place in the last thirty years or so, with the beginning of computerization of university management dating back to the 1990s. This article proposes to make a feedback between 2016 and 2020 on the modalities of construction of the information systems of 180 French universities and institutions, made by the Agency for the Mutualisation of Universities and Institutions (Amue), by mutualisation and collective construction, commonly called co-construction. We will show that the current IS construction is based on Engeström's theory of activity and that the community of practice plays an important role in the success of this construction.

Changbiao Wang

The positive mass theorem in general relativity states that in an asymptotically flat spacetime, if the momentum--energy tensor is divergence-free and satisfies a dominant energy condition, then a total momentum--energy four-vector can be formed, of which the energy component is nonnegative. In this paper, we take the wave four-tensor of a plane light wave in free space as a counterexample to show that there is no guarantee that a total four-vector can be formed. Thus the theoretical framework for the positive mass theorem is flawed. In addition, it is also shown as well that the Lorentz covariance of Dirac wave equation is not compatible with Einstein mass--energy equivalence.

L. Filipe O. Costa, José Natário, N. O. Santos

In the main article [CQG 38 (2021) 055003], a new "canonical" form for the Lewis metrics of the Weyl class has been obtained, depending only on three parameters -- Komar mass and angular momentum per unit length, plus the angle deficit -- corresponding to a coordinate system fixed to the "distant stars" and an everywhere timelike Killing vector field. Such form evinces the local but non-global static character of the spacetime, and striking parallelisms with the electromagnetic analogue. We discuss here its generality, main physical features and important limits (the Levi-Civita static cylinder, and spinning cosmic strings). We contrast it on geometric and physical grounds with the Kerr spacetime -- as an example of a metric which is locally non-static.

F. Cucker, Ding-Xuan Zhou

E. Ngai

Wei Song, Yifei Shen, Liping Li et al.

Similar to existing codes, puncturing and shortening are two general ways to obtain an arbitrary code length and code rate for polar codes. When some of the coded bits are punctured or shortened, it is equivalent to a situation in which the underlying channels of the polar codes are different. Therefore, the quality of bit channels with puncturing or shortening differ from the original qualities, which can greatly affect the construction of polar codes. In this paper, a general construction of polar codes is studied in two aspects: 1) the theoretical foundation of the construction; and 2) the hardware implementation of polar codes encoders. In contrast to the original identical and independent binary-input, memoryless, symmetric (BMS) channels, these underlying BMS channels can be different. For binary erasure channel (BEC) channels, recursive equations can be employed assuming independent BMS channels. For all other channel types, the proposed general construction of polar codes is based on the existing Tal-Vardy's procedure. The symmetric property and the degradation relationship are shown to be preserved under the general setting, rendering the possibility of a modification of Tal-Vardy's procedure. Simulation results clearly show improved error performance with re-ordering using the proposed new procedures. In terms of hardware, a novel pruned folded encoder architecture is proposed which saves the computation for the beginning frozen bits. Implementation results show the pruned encoder achieve 28% throughput improvement.