Takeshi Tanaka

Effect of the conductivity of the petri dish placed on the electrode on the surface layer of the spores in the PBII method
Shoya Umemoto, Koji Kakugawa, Kenta Nosaki, Takumi, Noda Takeshi Tanaka, Katia Vutova

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Plasma-based ion implantation (PBII) method is a technique that allows uniform ion implantation to a sample by applying a negative voltage to the model to draw and accelerate ions in the ion sheath existing around the piece. ...  read more

The sterilization effect of plasma-based ion implantation on prokaryotic microorganisms
Shoya Umemoto, Koji Kakugawa, Kenta Nosaki, Takumi, Noda Takeshi Tanaka, Katia Vutova

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The Plasma-based ion implantation (PBII) method is capable of low-temperature and short-time sterilization. In this study, we investigated the sterilization effect of PBII treatment on Gram-positive and Gram-negative bacteria’s ...  read more

20220102-03
Feedback control of ozone concentration in a room using an ozone generator and the Internet of Things with built-in sensor
Takeshi Tanaka, Masayuki Yamauchi, Koji Kakugawa, Toshikazu Uchida, Shigekazu Ishihara, Keiko Ishihara

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Recently, coronavirus has spread worldwide and is becoming a major challenge. Under such circumstances, coronavirus inactivation using ozone has been reported. We have also installed a Sigfox antenna at Hiroshima Institute ...  read more

20200912-01
Transmission of environment data with preliminary secret sharing processing using Sigfox
Nobuharu Okamitsu, Koichi Miyazono, Takeshi Tanaka

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Using the Sigfox network and the Internet, we created Internet-of-Things devices equipped with temperature, humidity, and barometric pressure sensors to measure the environment data. In this study, we developed a way to process ...  read more

20200508-03
IoT device with Global Positioning System using SigFox, ThingSpeak, and Anaconda platform
Takeshi Tanaka, Nobuharu Okamitsu, Kenshi Nishino

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We have developed a rudimentary Internet of Things (IoT) device equipped with a global positioning system module using the Sigfox network. The data sent from the IoT device using Sigfox Cloud and ThingSpeak are received and ...  read more

20200304-01
Development of an IoT device using SigFox, ThingSpeak, and MATLAB/Simulink
Takeshi Tanaka, Nobuharu Okamitsu, Takuma Hamada, Kenshi Nishino

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We installed a Sigfox antenna at Hiroshima Institute of Technology and acquired basic environmental data via the Sigfox network. The IoT device created by us comprises Sigfox, ThingSpeak, and MATLAB/Simulink, and this configuration ...  read more

20181112-08
Construction of a preliminary educational system for file backup system using secret sharing technique
Takeshi Tanaka, Nobuharu Okamitsu, Noriyuki Yamada, Toyoharu Takemoto, Katia Vutova

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Information-Technology Promotion Agency points out Ransomware as the second-ranked damage to organizations as well as individuals in “10 Major Security Threats 2017”. Information is stored in three data files separately ...  read more

20180910-06
Construction of a preliminary file backup system for surface analysis data using secret sharing technique
Nobuharu Okamitsu, Tomonori Tabe, Ryota Matsuda, Noriyuki Yamada, Toyoharu Takemoto, Takeshi Tanaka

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We have established a preliminary file backup system to study the outline of secret sharing technology and test operations. Secret sharing scheme is a key management scheme or key establishment scheme invented separately in ...  read more

20140304-08
Corporate education for manufacturing (Semiconductors) – creation of a training system and technical textbook
Hiroyuki Izumo, Keisuke Konishi, Rei Wada, Takashi Imagawa, Susumu Kise, Shenji Hatada, Takeshi Tanaka, Shigeo Hirano

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Artner Co., Ltd. is currently dependant on a variety of outsourcing systems that have been implemented with a high degree of technical assistance for the completion of projects. In large scale integration (LSI) design and ...  read more

20140506-59
Estimation of Self-Ignited Plasma Density Using Plasma-Based Ion Implantation
Nobuyuki Fujimura, Kazuhiro Shimono, Hiromitsu Noguchi, Hiroshi Toyota, Yoshito Shirai, Takeshi Tanaka

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Plasma density is estimated from the target voltage and current characteristics of the pulse modulator circuit in plasma-based ion implantation. The voltage recovery time constant directly reflects the ion sheath characteristics, ...  read more