Researcher List

Laboratories in Department of Network Design

Communication Systems Laboratory
Prof. Yukiji YAMAUCHI

Problem solving by team
Problem solving by team

Large-scale information networks are designed to work properly even when used by many people. In this laboratory, we will first learn about these points in depth. Then, we will study how we should improve our information networks to cope with the expected environmental changes in the future. We also conduct various research, including security, on how systems should be in the "IoT era," where all electronic devices are connected to the Internet.

Main Research Topics

  • Design and development of communication protocols
  • Security measures for large-scale networks
  • Practice of network utilization through regional cooperation

Microwave Photonics Communication Network Laboratory
Prof. Katsutoshi TSUKAMOTO

Heterogeneous radio signals transmission experiment in free space optics using RoFSO device
Heterogeneous radio signals transmission experiment in free space optics using RoFSO device

This laboratory covers wireless networks using microwave photonics technologies in order to realize with the aim of more useful mobile communications. Our research topics include Heterogeneous Wireless Systems using RoF (Radio over Fiber), RoFSO (Radio over Optical Free Space, or DRoF (Digital RoF) technology. As other topics, Visible light communication system and mobile agent systems are included.

Main Research Topics

  • Research on mobile backfall networks using RoF technologies
  • Experimental research on universal network infrastructure for IoT
  • Research on DTN using drones and mobile devices
  • Research on secured illumination optical communication systems
  • Research on user-centric wireless agent communication systems

Information Security Laboratory
Prof. Yasuko FUKUZAWA

Information Security Laboratory

In order to support the safety and security of information systems, we research technologies that deter fraud crime and protect information systems. In recent years, the Internet of Things (IoT), in which people, things, and systems are cooperating in a variety of ways, is expected to create new value, but at the same time, there are concerns that the variety of cooperation will cause new accidents that threaten safety and security. In addition, cryptography is not only used to keep information secret and detect tampering, but also to realize new distributed environment such as blockchain, which is causing a paradigm shift in the information society. We develop techniques to analyze risks such as attacks and vulnerabilities that put systems in danger and system security technologies using cryptography and authentication technologies. Through the study and examination of these technologies, we aim to understand the mutual relationship among systems and technologies, and to build safe and user-friendly security systems.

Main Research Topics

  • Research on safety and security analysis
  • Research on distributed information security
  • Research on security of cyber-physical systems

Intelligent Media Communication Laboratory
Prof. Shigeyuki SAKAZAWA

WebRTC communication and WoT boards
WebRTC communication and WoT boards

In the age of next-generation mobile communication (5G) and IoT, cameras and sensors have been installed everywhere from street corners to homes, and while this makes things more convenient, it also raises the issue of privacy violation. In this laboratory, we conduct research on image security technology to protect privacy, and on WoT (Web of Things) technology to fully utilize various sensor information avoiding vendor lock-in. In addition, new security issues have arisen in artificial intelligence, and we are also conducting research on copyright protection of trained deep neural networks.

Main Research Topics

  • Research on privacy-preserving image applications
  • Research on the integration of IoT devices and virtual reality (AR/VR)
  • Research on copyright protection of deep learning models

Image Information Processing Laboratory
Prof. Satoshi NISHIGUCHI

Acquisition of 3D object shape using RGB-D sensor
Acquisition of 3D object shape using RGB-D sensor

Humans make various decisions and take actions based on audiovisual information. By using sensors such as cameras and microphones as the eyes and ears of a computer, and processing the captured images and recorded sounds by the computer, the computer can be expected to be a partner in supporting human activities. In this laboratory, we are working on the realization of robots that can make intelligent judgments and actions using various sensors, and on the development of methods to realize more natural communication between humans in distant locations via the Internet.

Main Research Topics

  • Telecommunications system
  • Augmenting the communication space using virtual reality
  • Computer vision

Laboratory of Geoenvironments
Prof. Miwa YOKOKAWA

Laboratory of Geoenvironments

To build a sustainable society, it is necessary to correctly understand the current state of the global environment in which we live and to predict the future. For that purpose, it is important to know the information of the earth’s past environment and learn from the history of the earth. To read the information of the past environment, which is left in the strata, we are investigating the relationship between the topography and hydraulic conditions that makes the sedimentary structures found in the strata. We are conducting physical flume experiments and numerical simulations, from the perspectives listed in our main research topics.
More detail, please send all inquiries to miwa.yokokawa@oit.ac.jp

Main Research Topics

  • Bedforms and sedimentary structures, especially of supercritical flows
  • Subaqueous gravity currents and it’s geologic signature
  • Formation process of travertine and calcareous dam lakes
  • Comparison of sediment transport processes between the Earth and the other planets
  • Producing digital specimens of rocks and fossils for online lectures

Exercise Physiology Laboratory
Prof. Yumiko INOUE

Electromyogram measurement during grip strength exertion
Electromyogram measurement during grip strength exertion

Aerobic exercise not only trains respiratory and cardiovascular functions, but is also known to prevent the loss of frontal spinal gray matter, which is related to cognitive abilities. In this laboratory, we are studying the relationship between memory and cognition and exercise. Regarding cognition, we are also studying the concentration and dispersion of attention using visual information. Recently, we have begun to study spatial cognition as well. As virtual reality (VR) technology is increasingly used for educational purposes, examining short-term memory and cognition in VR space will provide basic information when using VR as a teaching tool. As another theme, we are developing a system to encourage exercise for people who are not exercising enough, aiming at how to make exercise fun. We aim to increase the amount of exercise in daily life by studying ways to make exercise safe and continuous.

Main Research Topics

  • Research on cognition and short-term memory
  • Motion analysis of walking, etc.
  • Development of exercise promotion systems

Networking Laboratory
Associate Prof. Akitsugu SHIMANO

Network equipment in operation
Network equipment in operation

Managing a computer network requires the following technology: related to network devices and server computers, to ensure that communication on the network is correct and secure, and to automatically monitor the network. Furthermore, the current and past status of the network must be displayed in an easy-to-understand matter. By actually developing various programs related to these technologies, we are training people who are familiar with network management.

Main Research Topics

  • Efficient design, construction, operation and management methods for networks
  • Labor-saving management of educational computer systems
  • Developing methods to improve network security
  • Development of web applications and applications for smart phones

Digital Education and Life Informatics Laboratory
Associate Prof. Kojiro YANO

Using Virtual Reality to Observe the Heart
Using Virtual Reality to Observe the Heart

Our research is constantly evolving. Please send all inquiries to kojiro.yano@oit.ac.jp.

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We are researching ways to enhance human's ability to "learn" and "discover" using information technology. In collaboration with the Graduate School of Medicine, Kyoto University, we are currently developing technologies to improve the efficiency and automation of diagnosis using medical images such as CT and MRI. We are aiming for more accurate diagnosis by visualizing the movements and changes in shape of organs, which are difficult for the human eye to grasp. We are also developing technology to display and manipulate medical images in a virtual space by creating 3D images of organs using virtual reality technology.

Main Research Topics

  • Automation and efficiency improvement of diagnostic imaging (CT, MRI, etc.)
  • Development of new medical technology using virtual reality.

Cyber-Human Systems Laboratory
Associate Prof. Shigeru KASHIHARA

Drone to support search operations
Drone to support search operationsn

In a new world with the fusion of cyberspace and real space, in addition to developing new information and communication technologies, diversification methodologies concerning its operation and spread are also required to benefit human society (SDGs) stably. Internet technology is one of the essential key factors to promote the evolution of the new world. This laboratory focuses on multidisciplinary research concerning the sustainable fusion of cyberspace and real space that can accept diverse values based on Internet technology.

Main Research Topics

  • Support for disaster response activities using drones
  • Soft-shell crab farming adapting with ICT/IoT/AI technologies
  • Drone detection system
  • Beyond 5G/6G system
  • Device-to-device communication, etc.

Laboratory of Systems Informatics
Assistant Prof. Satoshi SUGIKAWA

Laboratory of Systems Informatics

In recent years, a variety of problems (global, social, and familiar) have arisen in Japan and around the world. In order to solve such problems, it is important to design appropriate systems. In this laboratory, we are conducting theoretical and practical research on systems that solve various problems.
Specifically, we conduct research on optimization, simulation, and machine learning for production systems, image processing systems, and network systems, and develop applications based on these theories.
Ultimately, our goal is for the system to fully understand the decision maker and provide the best solution to the problem.

Main Research Topics

  • Optimization
  • Scheduling problems
  • Image processing systems
  • Meta-heuristics
  • IoT

Applied Physiology Laboratory
Assistant Prof. Daisuke KUME

Measuring arterial stiffness

In our laboratory, we are conducting research regarding physiological responses to exercise and emotional changes and are focusing on arterial stiffness.

Main Research Topic

  • Effects of exercise on acute mental stress-caused arterial stiffening