Results 101 to 110 of about 141,687 (289)

Introduction: Rethinking Freedom of Expression and Media Freedom

open access: yes, 2016
FROM THE INTRODUCTION: Freedom of expression is an essential part of democracy, and free speech goes hand in hand with a free media. Thomas Jefferson, the principal author of the American Declaration of Independence, wrote in 1816: “Where the press is ...
Kenyon, Andrew T.   +2 more
core  

Development of a Three‐Axis Planar Hall Magnetoresistance Sensor Using a Superparamagnetic Nanoparticle‐Based Flux Guide

open access: yesAdvanced Functional Materials, EarlyView.
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon   +10 more
wiley   +1 more source

Time‐Resolved Magnetization Switching Dynamics Driven by Orbital Torques

open access: yesAdvanced Functional Materials, EarlyView.
Du et al. reveal nanosecond magnetization switching driven by orbital currents using time‐resolved Hall detection. The measurements separate domain nucleation from domain wall propagation and show that Joule heating strongly assists switching by lowering energy barriers.
Ao Du   +4 more
wiley   +1 more source

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

open access: yesAdvanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk   +3 more
wiley   +1 more source

THE PLACE OF POLITICAL PARTIES IN A DEMOCRATIC STATE, THROUGH THE GLASS OF CONSTITUTIONAL REVIEW [PDF]

open access: yesChallenges of the Knowledge Society, 2017
Political parties are nowadays key actors in democratic societies, shaping social mentalities, creating and following ideologies, inducing common vision, establishing targets and ideals.
Valentina BĂRBĂȚEANU
doaj  

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

open access: yesAdvanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti   +8 more
wiley   +1 more source

Learning Materials for workshops on the IFLA Manifesto on Transparency, Good Governance and Freedom from Corruption

open access: yes, 2014
FAIFE is pleased to present a set of learning materials for use by librarians working the areas of transparency, good governance and freedom from corruption.
IFLA FAIFE (Committee on Freedom of Access to Information and Freedom of Expression)
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Learning Materials for workshops on the IFLA Manifesto on Transparency, Good Governance and Freedom from Corruption

open access: yes, 2012
FAIFE is pleased to present a set of learning materials for use by librarians working the areas of transparency, good governance and freedom from corruption.
IFLA FAIFE (Committee on Freedom of Access to Information and Freedom of Expression)
core   +1 more source

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