Akira Umemura - Articles - Scientific Research Publishing

Mechanism of the Large Surface Deformation Caused by Rayleigh-Taylor Instability at Large Atwood Number (Articles)

Yikai Li, Akira Umemura

Journal of Applied Mathematics and Physics Vol.2 No.10，September 30, 2014

DOI: 10.4236/jamp.2014.210110 2,912 Downloads 3,851 Views Citations
Frequency Control of Power System with Solar and Wind Power Stations by Using Frequency Band Control and Deadband Control of HVDC Interconnection Line (Articles)

Kimiko Tada, Takamasa Sato, Atsushi Umemura, Rion Takahashi, Junji Tamura, Yoshiharu Matsumura, Tsukasa Taguchi, Akira Yamada

Journal of Power and Energy Engineering Vol.6 No.9，September 25, 2018

DOI: 10.4236/jpee.2018.69007 1,054 Downloads 3,551 Views Citations
The Novel Current Control for Virtual Synchronous Generator (Articles)

Atsushi Umemura, Rion Takahashi, Junji Tamura

Journal of Power and Energy Engineering Vol.8 No.2，February 28, 2020

DOI: 10.4236/jpee.2020.82004 780 Downloads 1,985 Views Citations
A Study of Discrete-Time Optimum Current Controller for the Virtual Synchronous Generator under Constraints (Articles)

Atushi Umemura, Rion Takahashi, Junji Tamura

Smart Grid and Renewable Energy Vol.11 No.1，January 27, 2020

DOI: 10.4236/sgre.2020.111001 674 Downloads 1,338 Views Citations
Stability Enhancement of Small-Scale Power Grid with Renewable Power Sources by Variable Speed Diesel Power Plant* (Articles)

Rion Takahashi, Atsushi Umemura, Junji Tamura

Journal of Power and Energy Engineering Vol.8 No.3，March 25, 2020

DOI: 10.4236/jpee.2020.83001 711 Downloads 1,705 Views Citations
Enhancement in Thermal Stability of Polyoxymethylene (POM)-Based Biopolymer Blend Materials (Articles)

Jitlada Boonlertsamut, Supaphorn Thumsorn, Toshikazu Umemura, Hiroyuki Hamada, Atsushi Sakuma

Journal of Materials Science and Chemical Engineering Vol.7 No.7，July 23, 2019

DOI: 10.4236/msce.2019.77008 876 Downloads 2,153 Views Citations
Phosphorus Release from Sediments in a Riparian Phragmites australis Community at the Estuary of the Chikugogawa River, Western Japan (Articles)

Akira Haraguchi

American Journal of Plant Sciences Vol.3 No.7，July 9, 2012

DOI: 10.4236/ajps.2012.37114 5,600 Downloads 8,664 Views Citations
Analysis of the Tracer Diffusion Phenomena through Cracks in the Porous Media by Means of X-Ray CT (Articles)

Akira Sato

Materials Sciences and Applications Vol.4 No.8A，August 14, 2013

DOI: 10.4236/msa.2013.48A003 4,535 Downloads 6,306 Views Citations
This article belongs to the Special Issue on Porous Materials
Effects of Salinity on Germination, Seedling Growth and Ecological Properties of Phragmites australis Communities in the Estuary of the Chikugogawa River, Southwestern Japan (Articles)

Akira Haraguchi

American Journal of Plant Sciences Vol.5 No.5，March 11, 2014

DOI: 10.4236/ajps.2014.55073 4,950 Downloads 6,618 Views Citations
Extendibility Evaluation of Industrial EUV Source Technologies for kW Average Power and 6.x nm Wavelength Operation (Articles)

Akira Endo

Journal of Modern Physics Vol.5 No.5，March 31, 2014

DOI: 10.4236/jmp.2014.55039 7,341 Downloads 9,223 Views Citations
This article belongs to the Special Issue on Progress of Laser Technology
Effect of Degree of Cure on Sandwich Structural Capacitor Using Ion-Conductive Polymer with Carbon Fabric Skins (Articles)

Akira Todoroki

Open Journal of Composite Materials Vol.6 No.4，September 19, 2016

DOI: 10.4236/ojcm.2016.64011 1,915 Downloads 3,243 Views Citations
Optimal Control of a Thermoelectric Generator Attached with a Latent Heat Accumulator (Articles)

Akira Tsuyoshi

Journal of Power and Energy Engineering Vol.5 No.4，April 20, 2017

DOI: 10.4236/jpee.2017.54001 1,498 Downloads 2,755 Views Citations
Factors Associated with the Walking Ability of Hemiplegic Stroke Patients (Articles)

Akira Matsuyama

Open Journal of Nursing Vol.8 No.1，January 24, 2018

DOI: 10.4236/ojn.2018.81002 847 Downloads 2,753 Views Citations
Unusual spontaneous improvement in Asian variant of intravascular large B-cell lymphoma (Articles)

Takashi Ninomiya, Toru Nakamura, Nobuharu Fujii, Akio Hiraki, Shigeki Umemura, Hiromichi Yamane, Atsuko Shirakawa, Haruhito Kamei

Open Journal of Internal Medicine Vol.2 No.1，March 28, 2012

DOI: 10.4236/ojim.2012.21004 3,908 Downloads 6,359 Views Citations
Factors affecting early decline of executive function after subthalamic nucleus stimulation in Parkinson’s disease (Articles)

Atsushi Umemura, Yuichi Oka, Rika Tsuboi, Sonoko Fujii, Yoko Shimizu, Kenji Okita, Noriyuki Matsukawa, Kazuo Yamada

Advances in Parkinson's Disease Vol.2 No.3，July 19, 2013

DOI: 10.4236/apd.2013.23015 3,600 Downloads 6,271 Views Citations
Five-Year Outcomes of Bilateral Subthalamic Nucleus Stimulation in Japanese Patients with Parkinson’s Disease (Articles)

Atsushi Umemura, Miwako Miyata, Yuichi Oka, Kenji Okita, Genko Oyama, Yasushi Shimo, Nobutaka Hattori

Advances in Parkinson's Disease Vol.4 No.2，April 10, 2015

DOI: 10.4236/apd.2015.42004 4,012 Downloads 5,670 Views Citations
Stabilization of Wind Farm by Using PMSG Based Wind Generator Taking Grid Codes into Consideration (Articles)

Md. Rifat Hazari, Mohammad Abdul Mannan, Atsushi Umemura, Rion Takahashi, Junji Tamura

Journal of Power and Energy Engineering Vol.6 No.11，November 26, 2018

DOI: 10.4236/jpee.2018.611004 1,377 Downloads 2,764 Views Citations
Frequency Control of Power System with Renewable Power Sources by HVDC Interconnection Line and Battery Considering Energy Balancing (Articles)

Shoyu Onuka, Atsushi Umemura, Rion Takahashi, Junji Tamura, Atsushi Sakahara, Fumihito Tosaka, Ryosuke Nakamoto

Journal of Power and Energy Engineering Vol.8 No.4，April 21, 2020

DOI: 10.4236/jpee.2020.84002 898 Downloads 2,383 Views Citations
Adaptive Method for State Estimation of Sound Environment System with Uncertainty and its Application to Psychological Evaluation (Articles)

Hisako Orimoto, Akira Ikuta

Intelligent Information Management Vol.2 No.3，March 31, 2010

DOI: 10.4236/iim.2012.23025 6,027 Downloads 10,691 Views Citations
Temperature Dependency of Photosynthesis of Sphagnum spp. Distributed in the Warm-Temperate and the Cool-Temperate Mires of Japan (Articles)

Akira Haraguchi, Nanae Yamada

American Journal of Plant Sciences Vol.2 No.5，November 25, 2011

DOI: 10.4236/ajps.2011.25086 5,015 Downloads 8,688 Views Citations

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