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Institution

University of Electro-Communications

EducationTokyo, Japan
About: University of Electro-Communications is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Laser & Robot. The organization has 8041 authors who have published 16950 publications receiving 235832 citations. The organization is also known as: UEC & Denki-Tsūshin Daigaku.


Papers
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Journal ArticleDOI
TL;DR: In this article, a 5-axis ultraprecision milling machine consisting of three translational and two rotational axes has been developed benefitting from the use of non-friction servomechanisms.

53 citations

Journal ArticleDOI
TL;DR: In this paper, a new Electron Beam Ion Trap (EBIT) was constructed, and the performance of this EBIT was illustrated by illustrating the results of experiments with the EBIT.
Abstract: We have constructed a new Electron Beam Ion Trap (EBIT). Over recent months, we have operated this device and obtained some experimental results. In this paper, we show the performance of this EBIT by illustrating these results.

53 citations

Journal ArticleDOI
TL;DR: In this article, the authors measured the reflectivity as a function of the normal incident velocity component between 3 and $30\phantom{\rule{0.3em}{0ex}}\mathrm{cm}∕\mathm{s}
Abstract: A cold beam of ${\mathrm{He}}^{*}\phantom{\rule{0.3em}{0ex}}(2\phantom{\rule{0.2em}{0ex}}^{3}S_{1})$ atoms is used at grazing incidence to study the quantum reflection on a flat polished silicon surface. We measure the reflectivity as a function of the normal incident velocity component between 3 and $30\phantom{\rule{0.3em}{0ex}}\mathrm{cm}∕\mathrm{s}$. Our result is in reasonable agreement with a calculation of the attractive van der Waals surface potential using the dielectric function of Si and the dipole polarizability of ${\mathrm{He}}^{*}$. We discuss the influence of the conductivity and of a thin oxide layer on the potential. By comparing our data to those previously measured with ${\mathrm{Ne}}^{*}$ atoms, we are also able to confirm the scaling of the reflectivity with atomic mass.

53 citations

Journal ArticleDOI
TL;DR: A sampling theorem for regular sampling in shift-invariant subspaces is established and the sufficient-necessary condition for which it holds is found.
Abstract: A sampling theorem for regular sampling in shift-invariant subspaces is established. The sufficient-necessary condition for which it holds is found. Then, the theorem is modified to the shift sampling in shift-invariant subspaces by using the Zak transform. Finally, some examples are presented to show the generality of the theorem.

53 citations

Journal ArticleDOI
TL;DR: The challenges of and proposed solutions to wireless transmission systems of point cloud video, which is the most popular and favored way to represent volumetric media and significantly differs from the other types of videos are responded to.
Abstract: Volumetric video (or hologram video), the medium for representing natural content in VR/AR/MR, is presumably the next generation of video technology and a typical use case for 5G and beyond wireless communications. To realize volumetric video applications, efficient volumetric video streaming is in critical demand. This article responds to the challenges of and proposes solutions to wireless transmission systems of point cloud video, which is the most popular and favored way to represent volumetric media and significantly differs from the other types of videos. In particular, we first introduce point cloud video technology and its applications, and then discuss the challenges of and solutions to point cloud video streaming, including encoding, tiling, viewing angle prediction, decoding, quality assessment and transmission optimization. Furthermore, we explain a prototype of a MPEG DASH-based point cloud video streaming system as a preliminary study, along with more simulation results to verify its performance. Finally, we identify future research directions for providing high-quality point cloud video streaming.

53 citations


Authors

Showing all 8079 results

NameH-indexPapersCitations
Mildred S. Dresselhaus136762112525
Matthew Nguyen131129184346
Juan Bisquert10745046267
Dapeng Yu9474533613
Riichiro Saito9150248869
Shun-ichi Amari9049540383
Shigeru Nagase7661722099
Ingrid Verbauwhede7257521110
Satoshi Hasegawa6970822153
Yu Qiao6948429922
Yukio Tanaka6874419942
Zhijun Li6861414518
Iván Mora-Seró6723523229
Kazuo Tanaka6353527559
Da Xing6362414766
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202317
202258
2021644
2020815
2019908
2018837