Results 41 to 50 of about 790,991 (337)

Electrically-Driven Zoom Metalens Based on Dynamically Controlling the Phase of Barium Titanate (BTO) Column Antennas

open access: yesNanomaterials, 2021
The zoom metalens has been a research hotspot for metasurfaces in recent years. There are currently a variety of zoom methods, including dual metalenses, micro-electromechanical system metalenses, polydimethylsiloxane metalenses and Alvarez metalenses ...
Ning Xu   +11 more
doaj   +1 more source

Enabling passive measurement of zoom performance in production networks

open access: yesACM/SIGCOMM Internet Measurement Conference, 2022
Video-conferencing applications impose high loads and stringent performance requirements on the network. To better understand and manage these applications, we need effective ways to measure performance in the wild.
Oliver Michel   +4 more
semanticscholar   +1 more source

UPAYA MENINGKATKAN KEAKTIFAN BELAJAR ONLINE MENGGUNAKAN APLIKASI ZOOM PADA MATA PELAJARAN BTIK KELAS VIII A SMP TAKHASSUS AL-QUR’AN KALIBEBER

open access: yesJIPTEK: Jurnal Ilmiah Pendidikan Teknik dan Kejuruan, 2020
Pembelajaran jarak jauh yang dilakukan selama pandemi Covid-19 mengakibatkan berbagai masalah. Kejenuhan yang dialami peserta didik dan tidak pahamnya materi yang disampaikan mengakibatkan turunnya keaktifan peserta didik dalam kegiatan belajar mengajar.
Chanifah Chanifah   +2 more
doaj   +1 more source

Continuous optical zoom microscope with extended depth of field and 3D reconstruction

open access: yesPhotoniX, 2022
Microscope such as fluorescence microscope, confocal microscope and two-photon microscope plays an important role in life science, laser processing and other fields. However, most microscopes only have discrete zoom rates.
Chao Liu   +5 more
semanticscholar   +1 more source

Using the Zoom Platform in Distance Learning of a Foreign Language

open access: yesДискурс профессиональной коммуникации, 2021
The article considers the use of the Zoom platform in distance learning of a foreign language. The aim of the study is to consider the possibilities of using Zoom in distance learning of a foreign language.
A. V. Gureeva
doaj   +1 more source

Reconfigurable Parfocal Zoom Metalens

open access: yesConference on Lasers and Electro-Optics, 2022
We designed and experimentally realized a non-mechanically tuned metalens capable of performing ×10 zoom while maintaining focus. The metalens consists of two dielectric metasurfaces made of low-loss optical phase-change material, Ge2Sb2Se4Te1.
Fan Yang   +11 more
semanticscholar   +1 more source

Can you see me now?: a measurement study of Zoom, Webex, and Meet [PDF]

open access: yesACM/SIGCOMM Internet Measurement Conference, 2021
Since the outbreak of the COVID-19 pandemic, videoconferencing has become the default mode of communication in our daily lives at homes, workplaces and schools, and it is likely to remain an important part of our lives in the post-pandemic world. Despite
Hyunseok Chang   +3 more
semanticscholar   +1 more source

“Zoomar” y no restar en los cursos de ELE en Israel en tiempos de pandemia [PDF]

open access: yesmarcoELE. Revista de Didáctica Español Lengua Extranjera, 2021
La pandemia del COVID-19 ha suscitado el pasaje abrupto de las clases presenciales de todas las asignaturas –incluidas la de ELE– a las clases por zoom.
Lerner, Ivonne
doaj  

Black Screens

open access: yesSeminar.net, 2023
In this article, we ask the question: Why do students choose to turn their cameras off during online teaching? We discuss this issue from the perspective of adaptive structuration theory and media richness theory.
Inge Hermanrud   +6 more
doaj   +1 more source

Zoom-Mediated Online Learning Towards Students Reading Interest: An Experimental Study

open access: yesAl-Ishlah: Jurnal Pendidikan, 2022
In the last two years, the trend of online learning in universities has utilized Zoom as the main media to conduct the learning process. This study sought to determine the effect of using Zoom on students' reading interest.
Laras Aryandini Sukma   +2 more
doaj   +1 more source

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