Results 71 to 80 of about 2,725,559 (208)

Probing Metal Tip‐Induced Bond Weakening of a Reactive Alkyne Center Aligned via a Rigid Triphenylmethane‐Based Tripod on Au(111) by TERS and DFT

open access: yesJournal of Raman Spectroscopy, EarlyView.
We investigate tip‐induced bond weakening of a single alkyne center immobilized and aligned upright on Au(111) using a rigid triphenylmethane‐based tripod. By varying the tip–molecule distance, we observe shifts in the ≡C–H and –C≡C– vibrational bands via ultrahigh vacuum low‐temperature tip‐enhanced Raman scattering (TERS).
Gang Li   +12 more
wiley   +1 more source

On Steering Swarms

open access: yes, 2019
The main contribution of this paper is a novel method allowing an external observer/controller to steer and guide swarms of identical and indistinguishable agents, in spite of the agents' lack of information on absolute location and orientation ...
A Jadbabaie   +9 more
core   +1 more source

Economic Policy Uncertainty and Structural Transformation in Africa: The Conditional Role of Human Resource Development

open access: yesThunderbird International Business Review, EarlyView.
ABSTRACT The present study has investigated two objectives. First, it examines the unconditional impact of economic policy uncertainty (EPU) on Africa's structural transformation. Second, it explores the conditional role of human resource development in the nexus between economic policy uncertainty (EPU) and structural transformation.
Ekene ThankGod Emeka   +2 more
wiley   +1 more source

El legado pedagógico de Abraham Heschel

open access: yesEducación y Sociedad, 2021
El presente artículo muestra algunos de los aspectos que Abraham Heschelconsideró elementales para favorecer la educación, tanto en casa como en las aulas.
Héctor Sevilla-Godínez
doaj  

O jardim secreto Notas sobre Bataille e Foucault

open access: yesTempo Social, 1995
Em diversas ocasiões, Michel Foucault declarou afinidades com o pensamento de Georges Bataille, chegando a apresentar-se como seu discípulo. Essa filiação pode ser reconhecida na intensidade com que ambos se empenharam em desconstruir a idéia moderna de ...
ELIANE ROBERT MORAES
doaj   +1 more source

Games and gamification projects in the Australian public sector

open access: yesAustralian Journal of Public Administration, EarlyView.
Abstract This article surveys the arrival of gameful government into Australian public sector practice. Gameful government is a shorthand, descriptive term denoting the interpenetration of (video)games, and design elements and thinking from them, into public sector work.
David Threlfall, Catherine Althaus
wiley   +1 more source

Saberes sobre o trabalho: experiência e história nos canaviais

open access: yesPsicologia & Sociedade, 2014
A agroindústria da cana no Brasil tem ampliado suas dimensões e seu domínio sobre seu território. Politicamente, tal aumento respalda-se na história que associa a produção da cana-de-açúcar ao desenvolvimento econômico e ao progresso nacional (Godoy ...
Marcela Sobreira Silva   +1 more
doaj   +1 more source

Saber matemático e saber político

open access: yesRevista Dissertar, 2007
Crítica aos que pretendem julgar os sistemas representativos sobre rigores aritméticos, indicando que o princípio que tem orientado nas constituições republicanas brasileiras a distribuição de representantes nas instituições políticas não obedece a números, pelo contrário, usa números para ser obedecido, e que as raízes desse princípio estão ...
openaire   +2 more sources

Leader-following coordination of multi-agent systems with coupling time delays

open access: yes, 2007
In this paper, we consider a leader-following consensus problem of a group of autonomous agents with time-varying coupling delays. Two different cases of coupling topologies are investigated.
Amritkar   +18 more
core   +1 more source

Characterisation of the Mesial Root and Middle Mesial Canal Morphology in Mandibular First Molars: An Ex Vivo Micro‐CT Study

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT This ex vivo study characterised the mesial root morphology of mandibular first molars with a middle mesial canal (MMC) using micro‐CT. Among 469 scanned molars, 42 (8.96%) presented an MMC. Morphological parameters analysed included canal configuration, chamber orifice features, dentine thickness, isthmus type, and aspect ratio.
Nuno Rodrigues dos Santos   +3 more
wiley   +1 more source

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