Friday, Apr. 16, 2021 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:15 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Tetsuo Tateishi
ROHM, Member of the Board, Senior Corporate Officer, CTO
Genki Tsuruyama
ROHM, Senior Engineer
Analog circuit design, block and system level design challenges and solutions.
Power supplies are likened to circulatory organ of electronic devices, and further conversion efficiency improvement is demanded to realize carbon neutral society. In this presentation, we will present the transition of power supply systems, and design challenges and solutions of a block level analog circuit as an example. An example of how we utilize the technologies we have created is also presented.
Friday, 21 May, 2021 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Kazuto YANO
Department Head of Wireless Communication Systems,
Wave Engineering Laboratories,
Advanced Telecommunications Research Institute International (ATR)
R&D on Wave Engineering for Efficient and Flexible Use of Radio Wave in 6G Era
Since commercial 5G cellular services have been launched around the world including in Japan, R&D activities for establishing various technologies for realizing the next generation (6G) wireless communication systems. Moreover, various non-communication uses of radio wave such as object sensing have been emerged and further developed. This presentation will give an overview of the current trend of in R&D activities of wave engineering. In addition, it will introduce the “wireless COE project”, which is co-managed by ATR and Kyoto University, to accelerate such R&D activities on wave engineering for the 6G era
Friday, June 11, 2021 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Dr. Naoki Takeuchi
National Institute of Advanced Industrial Science and Technology (AIST)
Senior Researcher
Ultra-Low-Power Integrated Circuits Using Adiabatic Quantum-Flux-Parametron
This lecture describes the fundamentals and recent progress in adiabatic quantum-flux-parametron (AQFP), which is an energy-efficient superconductor logic family. AQFP circuits can operate with extremely small energy dissipation due to zero dc resistance in superconductors and reversible state change via adiabatic switching, and thus are a key technology for developing cryogenic information systems, such as low-power microprocessors and single-photon sensors. The lecture briefly explains the mechanism of adiabatic switching, AQFP circuit design methodology, and AQFP-based cryogenic systems, thereby showing the impact and importance of energy-efficient integrated circuits based on AQFP.
English
Friday, July 16, 2021 at 16:45-18:15
The URL of Teams will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Seiji KAWAMURA
Director of Remote Sensing Laboratory
Radio Propagation Research Center, Radio Research Institute
National Institute of Information and Communications Technology
Remote sensing technology for environmental monitoring
Remote sensing techniques using electromagnetic waves are introduced. Outlines of measurement methods for rainfall, cloud, wind velocity, water vapor, ground surface using ground-based radars and lidars, air-borne radars, space-borne radars are briefly mentioned. Furthermore, a method to measure water vapor using digital terrestrial broadcasting waves is introduced.
Japanese
Friday, Oct 15th, 2020 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Yusuke Koda
University of Oulu,
Centre for Wireless Communications,
Postdoctoral Researcher
Visual Data-Driven Millimeter Wave Communication Systems & Life in Finland as a Researcher on Wireless Communications
This talk will briefly explain my Ph.D. work entitled “Visual Data-Driven Millimeter Wave Communication Systems” by detailing the capability of millimeter communication, the blockage problem in it, and the solution driven by visual data, i.e., time-sequence of camera images, and machine learning techniques. Moreover, I will talk about my life in Finland as a visitor/postdoctoral researcher and shed light on the difference from the research life in Japan.
English
Friday, November 12th, 2021 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
IMAI KATSUYUKI
Senior Assistant General Manager, Hybrid Products Division, Sumitomo Electric Industries, Ltd.
What is Luneberg Lens?
Luneberg Lens is one of the radiowave lenses. We will briefly explain the principle, characteristics, and manufacturing process of Luneberg Lens. Furthermore, we will introduce wind profiler radar and Ku-band weather radar using Luneberg Lens as antenna.
Japanese
Friday, December 17th, 2021 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Taro Sekiyama
Assistant Professor
National Institute of Informatics & The Graduate University for Advanced Studies, SOKENDAI
Program Verification with Machine Learning
This talk first offers an overview of program verification. A main challenge in program verification is to verify programs with loops because it requires finding loop invariants, properties that hold while executing the loops. Discovering loop invariants is an undecidable problem in general. Therefore, the research community has made a lot of effort thus far for developing heuristic approaches to automated discovery of loop invariants. The second half of this talk will introduce recent applications of statistical machine learning methods to the problem of loop invariant discovery, focusing on the research conducted in our group.
English
Friday, January 21st, 2022 at 16:45-18:15
The URL of Zoom will be announced via faculty’s mailing list 3 days before the colloquium.
The lecture material will be available in PandA at 16:00 on the day of the colloquium.
The lecture will be recorded, and video and audio will be available on PandA.
Rui Kang
Oki Lab, Intelligent Communication Networks Area,
Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University.
Resource Allocation with Maintenance Schedule in Network Virtualization
Network function virtualization (NFV) decouples the functions from specialized hardware. The functions are virtualized to virtual network functions (VNFs) and form a service function chain (SFC) in a specific order to provide a service. The flexible allocation of VNFs deploys the network functions rapidly and improves network performance. The unavailability of a node interrupts the VNF running on the node. By using the operation records and maintenance plans, the possible locations and time of node availabilities can be obtained. This talk calls them an availability schedule. The service provider may avoid interruptions and improve the continuous serviceable time when performing the VNF allocation with availability schedules. This talk presents three models with corresponding analyses for different applications in the deterministic availability schedule, uncertain availability schedule, and backup VNF allocation. This talk introduces both mixed-integer linear programming approaches and greedy approaches for solving the models. This talk introduces applications of these models in a container orchestration platform as demostrations at last.
English