Keynote Lectures (under expansion!)

Yusaku Fujii, Ph.D Professor, Gunma University (Japan) President, (NPO) The e-JIKEI Network Promotion Institute (Japan)

[Title]
Creation of vaccine-independent and lockdown-free social system against COVID-19
[Abstract]
In many countries around the world, the acquisition of herd immunity by vaccination is being pursued as a measure against COVID-19. Even if herd immunity is successfully obtained, there is no guarantee that it will be effective for the next variants. It may not be possible to escape from the current intermittent lockdown state. In addition to achieving herd immunity through vaccination, every measure that has a potential to change the status quo should be seriously considered. I propose the creation of a social system, in which high-performance and inexpensive personal respiratory air purification devices, which reliably protect users from droplet and airborne infections in daily life, are developed and disseminated. People with these devices can go out even when lockdown is deemed necessary.

[Reference]
Save the world by distributing Distancing-Free Mask!
http://www.e-jikei.org/site/Perfect_Mask.htm

Xie Ming, Ph.D Associate Professor, Nanyang Technological University (Singapore) President, Robotics Society of Singapore (Singapore) Editor-in-Chief, International Journal of Humanoid Robotics

[Title]
Universal Culture Space and Value Systems
[Abstract]
We are living in the twenty-first century with tremendous progress in science and technology, which enables us to produce abundance of supplies. However, the international conflicts do not seem to be diminished in line with the intensified creation of wealth. What should be the root cause behind such phenomenon? The answer comes from the disparity of cultures among nations, populations, and races, etc. Interestingly, there is a universal culture space which is three-dimensional and has three axes for measuring universal values in our common world. In this talk, I will sequentially answer these six questions, namely: Who are we? Where are we come from? Where are we going to? Who is the designer of human beings? Who are the producers of human beings? Who are the users of human beings? The answers to the last three questions will help you to understand the universal culture space and value systems. Hopefully, the wide adoption of such findings will bring durable peace on our Earth.

Takao Yamaguchi, Ph.D Professor, Gunma University (Japan)

[Title]
Numerical Computation of Dynamic Responses for Hard/Soft Structures Conflicting with Living Human Bodies with Reaction
[Abstract]
A numerical method is proposed using a fast finite element method to compute dynamic responses for complicated systems including elastic (hard) /viscoelastic (soft) /porous (soft) structures and living bodies with reaction. An explicit expressions of modal loss factor are derived by applying asymptotic expansion to complex eigenvalue problem of the dynamics systems with dissipations Due to this method, we can know modal couplings in damping of the dynamics systems. This method was named as MSKE (Modal Strain and Kinetic Energy) Method. MSKE method is extended for the systems having nonlinear restoring force with linear/nonlinear hysteresis. The proposed method can be applied to compute impact responses of soft structures. We extended this method as complex nonlinear restoring force element to calculate impact responses of interaction systems between alive human bodies and machines (e. g. robots and vehicles). Dynamic responses can be computed for alive human bodies in consideration of difference between contraction and relaxing condition of muscle using complex coefficients for the nonlinear restoring force. Effects of precaution, foresight and panic on the responses can be treated in the computation when negative values are given for the imaginary parts of the nonlinear restoring force element.

Shinichi Maruyama, Ph.D Professor, Gunma University (Japan)

[Title]
Analysis on vibrations of thin-walled continuous body
[Abstract]
Thin-walled elements, such as beams, arches, plates and shell-panels　are widely used in recent downsized and light-weighted machines. Since　 flat beams and plates have low rigidity, curved elements such as　arches and shell-panels are widely used. Rigidity of the curved elements are fairly higher than that of the flat elements, because lateral deflection is coupled to in-plane deflection which enhance the rigidity of the curved structures. Furthermore, when large amplitude vibrations are generated in the flat or curved thin elements due to resonance, the lateral deflection has nonlinear coupling with the in-plane deformation which results in complex nonlinear vibration responses such as, subharmonic resonance, super harmonic response, internal resonance and chaotic vibrations. Recently, shapes of structural elements becomes more and more complex, thus analytical procedures are required to compute vibrations of such complex-shaped elements, precisely considering linear or nonlinear couplings between deflection and in-plane deformation with low computational costs. In this lecture, some recent topics in analysis on vibrations of thin-walled structural elements: (1) nonlinear vibration analysis on beams with variable cross section, (2) linear vibration analysis on rectangular or annular plates dividing finite segments with higher-order-differentiable mode function, and (3) vibration analysis on shell-panels including clamped edges.

[Keywords]

 Nonlinear Vibrations, Vibrations of flexible structures, Vibrations Analysis

Haruo Kobayashi, Ph.D Professor, Gunma University (Japan)

[Title]
Waveform Sampling Technologies for Next Generation Communication and IoT Systems
[Abstract]
Waveform sampling  technologies are important for 5G, 6G, IoT systems, electronic appliances, automotive and social infrastructure.

There are many keywords related to them:

・Sampling Circuit ・Anti-Aliasing Filter ・Sampling Theorem ・Subsampling ・Spectrum Folding ・Oversampling ・Equivalent-Time Sampling

・Metallic Ratio Sampling ・Residue Sampling ・Coherent/Incoherent Sampling ・Frequency Conversion by Sampling ・Quadrature Sampling

・Non-uniform Sampling ・Sampling Clock Jitter, ・Phase Noise ・Timing skew ・Finite Aperture Time

This talk reviews the research results of the authors' laboratory and their future direction.

Osamu Takaki, Ph.D Associate Professor, Gunma University (Japan)

[Title]
A criterion for determining parameters of anonymization algorithms based on a statistical perspective
[Abstract]
In this talk, we will discuss a criterion for setting values of paramters, called the anonymization parameters, which are used to determine degree of anonymization algorithms, which anonymize aggregate data by adding noise to the aggregate data while creating aggregate data from the individual data. Differential privacy has been proposed as a measure of the security of such anonymization algorithms. However, while conventional measures such as differential privacy are effective for comparing anonymization algorithms, they are not sufficient for appropriately determining the values of anonymization parameters. Furthermore, data anonymization should be conducted under the agreement between data providers and users, i.e., researchers. Thus, it is important to establish easy-to-understand criteria to determine the degree of anonymization. In this talk, we will focus on two opposing properties P and Q, which reflect the data analysts' intentions and the data providers' risks. After modeling two opposing properties P and Q, a criterion called α-criterion is created to determing anonymization parameters based on the "first kind of error" in the theory of statistical tests and the properties P and Q. By using anonymization parameters that satisfy the α-criterion, one can anonymize data sufficiently to guarantee the data analysts' goals beyond a criterion while keeping the data providers risks within the criterion. This talk will discuss the rationality of the α-criterion from both an experimental approach and a theoretical approach based on existing researches on differential privacy. 

Yuki Aoki, Ph.D Professor, Gunma University (Japan)

[Title]
Preliminary Report: Development of Data-driven Physics Education Systems
[Abstract]
Data-driven analysis is an important issue, not only in research, but also in education for data science.

In this study, we propose a new pedagogical method that incorporates machine learning as a data-based analytical method in the teaching of physics.

Mohd Abdur Rashid, Ph.D Visiting Professor, Gunma University (Japan)

[Title]
Evolution of InN Quantum Dot and Its Applications in Optoelectronic Devices
[Abstract]
In this talk, the gradual improvement of material system from bulk semiconductor to the nanoscale quantum structures will be demonstrated. The physical properties as well as the optoelectronic features of the quantum structures would also be discussed. There are some unique properties of InN based quantum structure, which made it the superior from the other available material systems. It is worth mentioning here that the Indium Nitride (InN) has a band gap of 0.7eV, which is compatible to 1.55 μm-wavelengths. This exciting property motivated us to investigate the performance of QD-lasers using InN as active layer material of the laser structure. Furthermore, the author also investigated other optoelectronic devices (LED and Solar Cell) using the InN as the active layer material. The above investigations were carried out through mathematical models and simulation approach. For the above mentioned cases, the author always found better performance using InN compared to other materials using as the active layer material. Finally, the author would like to discuss about the future direction of new research using InN based quantum dot in the field engineering and technology. 

Mousa F. Attom, Ph.D Professor, American University of Sharjah (UAE)

[Title]
Enhancement of Clay Soil strength Using Crushed Glass Waste
[Abstract]
Many materials are used to improve the properties of weak soils which is known as soil stabilization. This study investigates the use of crushed glass waste to improve strength of weak soil for potential use in the pavement material. Two types of soils were selected, mainly highly plastic clay (CH) and low plastic Clay (CL) and mixed with three different sizes of crushed glass at four different percentages 2.5%, 5.0%, 7.5% and 10%. Both soaked and unsoaked CBR tests were employed to evaluate the strength of the soil.   It was found that the addition of 10% of glass passing #40 will increase the unsoaked CBR value up to 388% and 433% for CH and CL soil, respectively. However, the addition of a larger size of the crushed glass more than 5% will decrease the CBR value. Additionally, the unsoaked samples showed a significant increase in strength than soaked samples.

Nobuaki Nakazawa, Ph.D Professor, Gunma University (Japan)

[Title]
Intuitive Interface Based on Eyelid Shape for Operation of Page Turner Machine
[Abstract]
In this study, we developed an intuitive interface by using eyelid shape for operation of page tuner machine. In cases where the iris is observed by the camera, the horizontal gazing points can be easily estimated from the relative distances between the iris and the left and right corners of the eyes. On the other hand, it seems to be difficult to recognize the vertical fixation point because the eyelid covers the eyeball.  Here we utilize the eyelid shape to detect the vertical gazing position. The proposed system was applied to the operations of the page turner machine. In trial operation,  the system could judge the user’s states of both reading a book and operating the machine by the special feature points on an eye.

Noriaki Yoshiura, Ph.D Professor, Saitama University (Japan)

[Title]
Dark Web and Money Laundering
[Abstract]
Dark Web enables anonymous usage of web services Dark Web enables providing websites anonymously and accessing websites anoymously. The good usage of Dark Web is whistle-blowing, but almost all usages of Dark Web are bad. In Dark Web we can find many transactions of illegal goods such as drugs, fake passports or fake idtification cards, stolen credit card numbers and so on. Money which is used in transactions is Bitcoin, a major cryptocurrency. Website owners obtain Bitcoin by transaction of illegal goods and launders Bitcoin to escape from police pursuit. We give a presentation of current status of Dark Web and money laundering in cyber crime.

Dr.-Ing. Mitra Djamal, IPU, ASEAN Eng. Professor, Institut Teknologi Bandung (Indonesia)

[Title]
New Method for Halal Food Authentication
[Abstract]
Halal food authentication is an important issue, especially for the Muslims community. Until now people needs long time (several days) to determine that a food does not contain lard, because it uses a long chemical process. We have developed a new method for authenticating halal food based on Raman Spectroscopy. Using this method we can determine that a meal does not contain lard quickly and inexpensively. The Raman spectral data acquired from animal fats (lard, tallow, and schmaltz) is analysed by Principal Components Analysis. Further analysis was carried out using the comparison of unsaturated fats with saturated fats or esters. The results showed that there was a distinct separation between lard, tallow, and schmaltz.

Wei Jiang，Ph.D Professor, Yangzhou University (China)

[Title]
Hardware-in-the-loop (HIL) development system for process controls
[Abstract]
Industrial control systems usually involve complex process such as liquid level management, temperature control or chemical reactions. To design the digital controller for such systems, closed-loop tests have to be performed carefully as oscillation or overshot of the system states might cause catastrophic consequences in certain process systems. Real-time simulation offers a low cost, safety proof and at-all-times test environment for the control system design. In this paper, a real-time process control hardware-in-the-loop (ProcHIL) system is proposed. The ProcHIL system consists of a fixed-point digital signal controller (DSC) and dedicated signal conditioning peripherals. The DSC performs accelerated iterations of the difference equations of the dynamic process. In order to interface industrial control systems, various low-cost interface circuits are designed, featuring the isolated analog voltage output and 4-20 mA current output for sensor emulation, high-speed digital I/O ports for controller interaction, and low-speed digital I/O ports for the event control and display. A classical two-tank model is derived and implemented in the DSC which is later verified with the continuous model in PC simulation. The closed-loop interaction between ProcHIL and programmable logic controller (PLC) is carried out and compared with PC simulation. The comparison of control effects between ProcHIL and physical plant is completed, proving the substantial equivalence between the two.