Explanipedia

Effect of Dimensional Variation on Magnet Temperature Estimation in Interior Permanent Magnet Synchronous Motors Open

Shintaro Arai, Ryosuke Akaki, Ryuichi Miyano · 2025

Efficacy of a Modified Superficial Temporal Artery–Middle Cerebral Artery Bypass Using Superficial Temporal Artery Side-Branch Donors in Adult Moyamoya Disease: A Technical Note Open

Shintaro Arai, Tatsuya Sugiyama, Tohru Mizutani, Kenji Sumi, Masaki Matsumoto , et al. · 2025

Background: Adult moyamoya disease (MMD) is a progressive steno-occlusive cerebrovascular disorder for which surgical revascularization is the primary treatment. The standard direct superficial temporal artery–middle cerebral artery (STA-M…

Prediction of Distal Dural Ring Location in Internal Carotid Paraclinoid Aneurysms Using the Tuberculum Sellae–Anterior Clinoid Process Line Open

Masaki Matsumoto, Tohru Mizutani, Tatsuya Sugiyama, Kenji Sumi, Shintaro Arai , et al. · 2025

Background/Objectives: Current bone-based landmark approaches have shown variable accuracy and poor reproducibility. We validated a two-point “tuberculum sellae–anterior clinoid process” (TS–ACP) line traced on routine 3D-computed tomograp…

Error Reduction in Estimating Magnet Temperature of Interior Permanent Magnet Synchronous Motor Using Induced Voltage Open

Shintaro Arai, Ryosuke Akaki, Ryuichi Miyano · 2025

Cavernous Sinus Endodermal Cyst: A Report of a Rare Case Open

Shintaro Arai, Tohru Mizutani, Keisuke Shimizu, Kouzou Murakami, Yoichi Morofuji · 2025

Improved Low-Complexity Demodulation: Integrating Minimum-Mean-Square-Error and Maximum-Likelihood Detection for Image-Sensor-Based Visible Light Communication Open

Yuki Ohira, Shintaro Arai, Kengo Fujii, Tomohiro Yendo · 2025

This study proposes an improved low-complexity signal demodulation method for a visible light communication (VLC) system with an image sensor as a receiver and light-emitting diode (LED) transmitters. Signal demodulation by VLC systems is …

岡山へこられー！ Open

Shintaro Arai · 2025

Improvement of noncontact heart rate measurement by millimeter-wave radar utilizing respiratory components of biological signals Open

Hiroto Fujii, Shintaro Arai, Kohei Saeki, Ryohei Yoshitake, Suguru Kameda , et al. · 2025

LARGE-SCALE LOAD CARRYING CAPACITY TEST OF CURVED STEEL BOX GIRDERS WITH/WITHOUT HORIZONTAL STIFFENERS SUBJECTED TO BENDING Open

Junichi Adachi, Takashi Yamaguchi, Shintaro Arai, Michiaki Takao, Miku IKEDA · 2025

First Operation of a Liquid Argon Time Projection Chamber (LArTPC) in the Stratosphere as an Engineering Gamma-Ray and AntiMatter Survey (GRAMS) Balloon Flight (eGRAMS) Open

R. Nakajima, Shintaro Arai, K Aoyama, Y Utsumi, Tsubasa Tamba , et al. · 2024

Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation balloon/satellite experiment utilizing a Liquid Argon Time Projection Chamber (LArTPC), to simultaneously target astrophysical observations of cosmic MeV gamma rays and conduct a…

First operation of LArTPC in the stratosphere as an engineering GRAMS balloon flight (eGRAMS) Open

R. Nakajima, Shintaro Arai, K. Aoyama, Y. Utsumi, Tsubasa Tamba , et al. · 2024

GRAMS (Gamma-Ray and AntiMatter Survey) is a next-generation balloon/satellite experiment utilizing a LArTPC (Liquid Argon Time Projection Chamber), to simultaneously target astrophysical observations of cosmic MeV gamma-rays and conduct a…

Noncontact Respiration Measurement Inside and Outside Electromagnetic Anechoic Chamber Using Millimeter-Wave Radar Open

Hiroto Fujii, Shintaro Arai, Kohei Saeki, Ryohei Yoshitake, Eri Iwata , et al. · 2024

Noncontact vital signs sensing is the technology for measuring vitals without attaching measuring instruments to the human body. Compared with the contact type, the noncontact type does not require the stress of mounting a measuring instru…

Metagenomic Analysis of Bacterial Microflora in Dental and Atherosclerotic Plaques of Patients With Internal Carotid Artery Stenosis Open

Ayako Sato, Shintaro Arai, Kenji Sumi, Haruka Fukamachi, Satoko Miyake , et al. · 2024

Background: Internal carotid artery stenosis is primarily attributed to atherosclerosis in the carotid artery bifurcation. Previous studies have detected oral bacteria in atherosclerotic lesions, suggesting an association between oral bact…

Image Sensor Communication via Light Trail Using Propeller LED Transmitter Open

Zhengqiang Tang, Jinxing Zheng, Takaya Yamazato, Shintaro Arai · 2023

This article proposes an image sensor communication (ISC) system based on light trails using rotary LEDs. The light trail refers to an optical phenomenon where light appears elongated and forms a trajectory due to the movement of luminous …

A Coupled Behaviour of Web and Flange on Bending Buckling of the Web of Steel Box Girder Open

Miku IKEDA, Takashi Yamaguchi, Shintaro Arai, Gen Hayashi · 2023

In general, a web of the steel box girder is designed as an independent. However, in actual behaviour, since the web and the flange behave in couple, the web is considered to have a higher bending buckling strength than the designed standa…

Surgical treatment for extremely rare solitary fibrous tumors of the central nervous system originating from cranial nerve VIII: new clinicopathological findings. Illustrative case Open

Shintaro Arai, Katsuyoshi Shimizu, Tohru Mizutani · 2023

BACKGROUND Reports of solitary fibrous tumors (SFTs) of the central nervous system (CNS) originating from cranial nerves are extremely rare. The origins of these neurogenic SFTs of the CNS have been determined only by intraoperative findin…

High-speed image sensor communication using high dynamic range combining Open

Ruiyi Huang, Takaya Yamazato, Masayuki Kinoshita, Hiraku Okada, Shintaro Arai , et al. · 2023

An essential issue in image sensor communication (ISC) is reliable and high-speed data transmission. In order to increase the data rate, this study uses pulse-width modulation (PWM). However, the symbol decision for PWM will become challen…

Achieving Successful VLC Signal Reception Using A Rolling Shutter Image Sensor While Driving at 40 km/h Open

S Kamiya, Zhengqiang Tang, Takaya Yamazato, Masayuki Kinoshita, Koji Kamakura , et al. · 2023

This paper presents the successful reception of visible light communication (VLC) signals, transmitted from an LED array, by an image sensor that utilizes a rolling shutter while driving at 40 km/h. The rolling shutter image sensors used i…

Exposure Synchronization in Optical Camera Communications for Time Division Multiplexing Open

Hiroaki Matsunaga, Tomohiro Yendo, Shintaro Arai, Takaya Yamazato · 2023

Optical camera communication (OCC) is a type of visible light communication that employs a camera as the receiver. Various flicker-free OCC methods using a general-purpose low-frame rate camera have been proposed. In particular, the unders…

Simultaneous Visible Light Communication and Ranging Using High-Speed Stereo Cameras Based on Bicubic Interpolation Considering Multi-Level Pulse-Width Modulation Open

Ruiyi Huang, Masayuki Kinoshita, Takaya Yamazato, Hiraku Okada, Koji KAMAKURA , et al. · 2022

Visible light communication (VLC) and visible light ranging are applicable techniques for intelligent transportation systems (ITS). They use every unique light-emitting diode (LED) on roads for data transmission and range estimation. The s…

A study on detection of rotary LED transmitter for image sensor communication Open

Akinori Nakayama, Shintaro Arai, Zhengqiang Tang, Di He, Tomohiro Yendo · 2022

This study focuses on a rotary LED transmitter (RLT) for image sensor communication (ISC). RLT is a device that improves the transmission rate by utilizing the afterimages generated by moving the LEDs while blinking. When RLT is used in a …

Noise-assisted nonlinear estimation of a one-bit ADC output and its application to a multi-antenna receiver Open

Masato Saito, Yasuo Nakashima, Takaya Yamazato, Shintaro Arai, Hiroyuki Hatano , et al. · 2022

One-bit analog-to-digital converters (ADCs) are now emerging owing to their high power efficiency, simple structure, and high sampling rate. Even with the strong nonlinear behavior of the ADC, a linear representation of the ADC output can …

Noise-assisted nonlinear estimation of a one-bit ADC output and its application to a multi-antenna receiver Open

Masato Saito, Yasuo Nakashima, Takaya Yamazato, Shintaro Arai, Hiroyuki Hatano , et al. · 2022

One-bit analog-to-digital converters (ADCs) are now emerging owing to their high power efficiency, simple structure, and high sampling rate. Even with the strong nonlinear behavior of the ADC, a linear representation of the ADC output can …

Roadside LED array acquisition for road-to-vehicle visible light communication using spatial-temporal gradient values Open

Kento Nakamura, Ruiyi Huang, Takaya Yamazato, Masayuki Kinoshita, Koji Kamakura , et al. · 2022

Most of the previous research on the acquisition of the LED Array transmitter assumes that the onboard receiver approaches the LED transmitter from the car’s front. In this study, we considered a case where the vehicle’s receiver crosses t…

Superficial Temporal Artery-Middle Cerebral Artery Bypass Surgery: A Focus on Intimal Checks and Suturing Open

Tatsuya Sugiyama, Tohru Mizutani, Kenji Sumi, Takato Nakajo, Yosuke Sato , et al. · 2022

superficial temporal artery-middle cerebral artery（STA-MCA）バイパス術は，脳虚血や治療困難な脳動脈瘤，もやもや病などに対する手技として，脳卒中の外科医に必要な手技である．バイパス術の練習方法や手技についての報告はあるが，本稿で主張している縫合部の内膜確認方法や縫合の手技が述べられた文献は渉猟し得なかった．われわれは2012年5月から2018年4月までに112症例（207吻合）にバイパス術を経験し，開存率98.1％と良…

Metagenomic Analysis of Bacterial Microflora in Dental and Atherosclerotic Plaques of Patients with Internal Carotid Artery Stenosis Open

Ayako Sato, Shintaro Arai, Kenji Sumi, Haruka Fukamachi, Satoko Miyake , et al. · 2022

Simplified Alamouti-Type Space-Time Coding for Image Sensor Communication Using Rotary LED Transmitter Open

Zhengqiang Tang, Shintaro Arai, Takaya Yamazato · 2021

This study proposes a simplified Alamouti-type space-time coding (STC), improving the performance of image sensor communication (ISC) using a rotary LED transmitter. The rotary LED transmitter was developed to increase the data rate of ISC…

Secure beamforming for intelligent reflecting surface-assisted MISO systems Open

Kui Yang, Guangda Zang, Lingna Hu, Guochen Pei, Shintaro Arai , et al. · 2021

This paper considers the scenario where the base station and legitimate user are blocked by obstacles and uses an intelligent reflecting surface (IRS) to assist communication. To improve physical layer security, we model the eavesdropper c…

Rotary LED Transmitter for Improving Data Transmission Rate of Image Sensor Communication Open

Shintaro Arai, Zhengqiang Tang, Akinori Nakayama, Haruhiro Takata, Tomohiro Yendo · 2021

This study focuses on image sensor communication (ISC), which is a form of visible light communication, using a light-emitting diode (LED) and a camera as the transmitting and receiving device, respectively. In an ISC system, the receiver …

Comparison of distance performances of modulation schemes in intelligent transport system image sensor communication Open

Takuya Yamamoto, Takaya Yamazato, Hiraku Okada, Masayuki Kinoshita, Koji Kamakura , et al. · 2021

This study describes intelligent transport image sensor communication (ITS-ISC) systems that use LED arrays as transmitters that imitate traffic lights. Three signal-transmission schemes -luminance modulation, spatial modulation, and combi…

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