Results 41 to 50 of about 10,164 (248)

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

A Usability Evaluation of a Blended MOOC Environment: An Experimental Case Study

International Review of Research in Open and Distributed Learning, 2015
In the past few years, there has been an increasing interest in Massive Open Online Courses (MOOCs) as a new form of Technology-Enhanced Learning (TEL), in higher education and beyond.
Ahmed Mohamed Fahmy Yousef , Mohamed Amine Chatti, Ulrik Schroeder, Marold Wosnitza   +3 more
doaj  

Une approche communicationnelle des Massive Open Online Courses

Revue Française des Sciences de l’Information et de la Communication, 2016
Developed at the United States and Canada since 2008 and more recently in Europe, the Massive Open Online Courses (Mooc) are the result of technological and communicational innovations.
Eleni Mouratidou, Geneviève Vidal
doaj   +1 more source

Operation Limits of Integrated Photo‐Rechargeable Batteries

Advanced Materials, EarlyView.
This study elucidates the operational limitations of integrated photo‐rechargeable batteries. We demonstrate that the photo‐charging process is fundamentally restricted not only by material‐to‐material energy level alignment but also by transient capacitive charge accumulation within the cathode framework.
Byung‐Man Kim, Arvind Pujari, Hooman Abbasi, Weidong Xu, Yutong Han, Samuel D. Stranks, Michael De Volder   +6 more
wiley   +1 more source

Metastable Polymers for Circular 3D Printing

Advanced Materials, EarlyView.
3D‐printed polymers are usually permanent and hard to recycle. Here, metastable polymers are designed to fall apart on demand. A chemical trigger unzips the printed material back into its original building blocks within minutes at room temperature.
Johannes Markhart, Philipp Mainik, Eva Blasco   +2 more
wiley   +1 more source

Student engagement in massive open online courses [PDF]

International Journal of Learning Technology, 2016
Completion rates in Massive Open Online Courses (MOOCs) are disturbingly low. Existing analysis has focused on patterns of resource access and prediction of drop-out using learning analytics. In contrast, the effectiveness of teaching programs in traditional Higher Education (HE) settings internationally is increasingly assessed by surveys measuring ...
Jane E. Sinclair, Sara Kalvala
openaire   +1 more source

Microfabrication of Soft Millirobots Propelled by Low Voltage Electrohydraulic Actuators

Advanced Materials Technologies, EarlyView.
Manual layer‐by‐layer assembly is replaced by wafer‐level MEMS batch fabrication for compliant polymer‐based electrohydraulic actuators. The microfabricated devices integrate sacrificially defined microcavities, Parylene‐C‐sealed inlets, and multilayer polymer–metal films.
Shai Shmulevich, Florian Hartmann, Herbert Shea   +2 more
wiley   +1 more source

Auto‐Routing Fluidic Printed Circuit Boards

Advanced Robotics Research, EarlyView.
This work introduces (STREAM) software tool for routing efficiently advanced macrofluidics, an open‐source software tool for automating the design of 3D‐printable fluidic circuit boards. STREAM streamlines tube routing and layout, enabling the rapid fabrication of fluidic networks for soft robotics, lab‐on‐a‐chip devices, microfluidics, and biohybrid ...
Savita V. Kendre, Lehong Wang, Haotian Liu, Markus P. Nemitz   +3 more
wiley   +1 more source

An Analysis of Course Characteristics, Learner Characteristics, and Certification Rates in MITx MOOCs

International Review of Research in Open and Distributed Learning, 2020
Massive Open Online Courses (MOOCs), capable of providing free (or low cost) courses for millions of learners anytime and anywhere, have gained the attention of researchers, educational institutions, and learners worldwide.
Nergiz Ercil Cagiltay, Kursat Cagiltay, Berkan Celik   +2 more
doaj   +1 more source

The Adoption of Massive Open Online Courses

International Journal of Web-Based Learning and Teaching Technologies, 2018
This article explores the challenges and benefits of using Massive Open Online Courses (MOOCs). It also tried to understand the issues that would influence students' perceptions regarding MOOCs. The Study utilized the Theory of Reasoned Actions (TRA) to understand the factors influencing respondents' adoption of such environment.
Emad A. Abu-Shanab, Sajida Musleh
openaire   +3 more sources