Results 91 to 100 of about 945,741 (291)

Associations of Sleep and Shift Work with Osteoarthritis Risk

open access: yesArthritis Care &Research, Accepted Article.
Objective Daily rhythms may be critical for maintaining homeostasis of joint tissues. We aimed to investigate the relationships between circadian clock disruption, sleep, and osteoarthritis (OA) risk in humans. Methods In the UK Biobank, a prospective 500,000‐person cohort, we evaluated associations between sleep duration, sleeplessness/insomnia, and ...
Elizabeth L. Yanik   +5 more
wiley   +1 more source

La historia del género y el género en historia. Apuntes preliminares dentro del profesorado en Historia, de la Universidad Nacional de La Plata

open access: yesClio y Asociados, 2017
This article proposes an analysis about the history of gender and gender in the teaching of history. For this we will stop, in the first instance, in an analysis of historiographical nature repairing in this way in the ...
Milagros Rocha
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

The Development of the History Curriculum in English Primary Schools: Analysis of Data and Identification of Trends from the British Historical Association’s 2011 Primary Survey

open access: yesEducational Futures, 2012
Through the 1990 introduction of history as an English National Curriculum subject a Conservative government statutorily embedded history in the English primary curriculum as a de facto new subject.
Jon Nichol, Penelope Harnett
doaj  

Shellfish Outreach Project [PDF]

open access: yes, 2003
The purpose of the Shellfish Outreach project was to disseminate educational information to the greater seacoast community on the value of aquaculture, status and opportunities in shellfishing, and hands-on local conservation strategies in an exciting ...
Smith, Dyanna I
core   +2 more sources

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner   +22 more
wiley   +1 more source

Studying local and regional history in Britain and Ireland: The Open University MA in History

open access: yes, 2010
Provides a detailed review of the development and curriculum of the MA History programme, explaining the aims and structure of the course. The paper provides an overview of the seminal works of history studied, the skills and resources students learn to ...
Donnachie, Ian
core  

\u3ci\u3eBody Counts: The Vietnam War and Militarized Refugees\u3c/i\u3e Book Review [PDF]

open access: yes, 2017
In this book review of Body Counts: The Vietnam War and Militarized Refugees, the author reviews the concept of “militarized refugee,” explores “memory” as a research framework, and attempts to connect the author’s memory to the memory of the author of ...
Nguyen, Ngan
core   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud   +7 more
wiley   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

open access: yesAdvanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu   +14 more
wiley   +1 more source

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