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 Keynote
Lectures （4-5 minutes/lecture）
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Ichirou
Yamaguchi, Ph.D.
Scientist Emeritus, RIKEN (Japan)
Former Professor,
Gunma University (Japan)
Former Vice-President, ICO
Former Director, SPIE
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[Title]
Measurements of surface shape and deformation by digital laser
interferometry
[Abstract]
Advances of digital image processing combined with laser interferometry have
increased the performances of applications of wave optics to modern
interferometry to noncontacting measurements with
high sensitivity. They consist of conventional interferometry applicable to
smooth surfaces and both holography and speckle technique that can also be
used for rough surfaces. Quantitative and automatic metrologies using these
techniques are presented with principles and modern digital
implementations. Physical principles and mutual relationships of these
methods are explained. Examples of applications are also mentioned.
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Edy Tri Baskoro,
Dr.-Ing.
Dean, Faculty of Mathematics and Natural Sciences, Bandung Institute
of Technology (Indonesia)
Professor,
Bandung Institute of Technology (Indonesia)
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[Title]
Graph Ramsey Number: Old problem and New Results
[Abstract]
Paul Erdos and George Szekeres
(1935) initiated the study of the classical Ramsey theory in graph. Since
then the study of Ramsey Theory became extensive. In general, finding the
exact value of classical Ramsey numbers r(m,n) has
received a lot of attention. However, the results are still far from
satisfactory. For any general graphs G and H, the Ramsey number R(G,H) is
denoted as the least integer t such that any red-blue coloring on the edges
of the complete graph on t vertices yields either a red G or a blue H as a
subgraph. The Ramsey number R(G,H) has been studied for various pairs of G
and H. In this talk, we shall give a survey on the determination of Ramsey
numbers R(G,H) if one of G and H is a wheel. We also discuss the Ramsey
numbers R(G,H) if either G or H is a union of graphs.
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Haruo
Kobayashi, Ph.D
Professor, Gunma University (Japan)
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[Title]
Complex Signal Processing in Analog/Mixed-Signal Circuits
[Abstract]
This paper introduces the research results of the author’s group in the area
of complex signal processing for analog/mixed-signal circuits. Here the
complex signal consists of In-phase and Quadrature-phase signals (I, Q
signals); the I-signal is its real part while the Q-signal is its imaginary
part. As complex signal processing circuits, the characteristics of the RC polyphase filter, the complex active RC filter and the
active gm-C filter are shown and also the data weighted averaging (DWA)
algorithms for complex digital-to-analog converters are introduced.
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Akihisa
Takahashi, Ph.D
Professor, Gunma University Heavy Ion Medical Center (Japan)
President, The
Japanese Association of Space Radiation Research
Vice President,
Science Union of Human Planetary Habitation in Space; Japanese Society for
Biological Sciences in Space; Particle Therapy Co-Operative Group
Radiobiology Sub-committee
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[Title]
Gunma University Heavy Ion Medical Center (GHMC): Therapy and Space
Research
[Abstract]
Gunma University is the only institution among universities with its own
heavy ion therapy equipment in Japan. Heavy ions are accelerated to
approximately 70% of the speed of light and applied to patients in order to
treat deep-seated cancer within the bodies. Heavy ion cancer therapy allows
the tumors to be treated without using invasive procedures such as surgery
and without causing pain. Naturally, heavy ion come from the Sun and
explosions of supernovae. The space radiation is a serious hazard in long-term
manned space missions. The research in the field of biological effects of
heavy ion is needed for both heavy ion therapy and protection from the
exposure to space radiation. In this lecture, I'd like to introduce “heavy
ion”.
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Osamu Takaki, Ph.D
Associate Professor, Gunma University (Japan)
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[Title]
Data analysis based on temporal associations between databases in a
hospital
[Abstract]
Today a large hospital has various kinds of databases, in which there's a
tremendous amount of data about patients and/or staff that has been
collected. This lecture introduces an attempt to analyze such data while
associating data in different kinds of databases. It proposes a framework
centering on query language to find out characteristic changes of phenomena
frequency in data and associating the data with more detail data
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Yuki
Aoki, Ph.D
Associate Professor, Gunma University (Japan)
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[Title]
Science Education for Society 5.0
[Abstract]
Teaching aids for middle school science classes using next-generation technology
such as virtual reality, augmented reality, and a face-to-face learning
management system are reviewed. These aids have possibilities for the
Internet of Things, big data, and artificial intelligence, all of which are
necessary for the social realization of Society 5.0.
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Takao
Yamaguchi, Ph.D
Professor, Gunma University (Japan)
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[Title]
Development of Numerical Analysis for Dynamic Responses of Complicated Systems
and Application to Damped Structures Having Acoustic Black Hole
[Abstract]
A fast finite element method is proposed to compute dynamic properties for
complicated systems having elastic/viscoelastic/porous structures with
acoustic black holes. The acoustic black hole proposed by Krylov
is plates having an edge where its thickness decreases sharply as a power
function of the thickness. And on the small area of the edge, viscoelastic
damping material is laminated. By using this structure, flexural waves cannot
be reflected at the edge with the acoustic black holes.
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Yusaku
Fujii, Ph.D
Professor, Gunma University (Japan)
President,
(NPO) The e-JIKEI Network Promotion Institute (Japan)
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[Title]
Will every street be watched by camera network in the near future
[Abstract]
The proposition “Will every street be watched by camera network in the near future?”
will be discussed in the lecture. A street camera network, in which many IP
cameras are installed at a high density, similar to street lights throughout
a nation, will have a stronger positive effect in suspect tracking and crime
deterrence in the near future. On the other hand, it will also have a
stronger negative effect related to the violation of privacy of ordinary
citizens. In order to make such a stronger surveillance camera system, which
forcibly captures the images of passersby for the public interest, be
accepted as an essential social infrastructure by a society, it is necessary
for this camera system to make ordinary citizens be convinced that it is used
only for the public interest. To realize this, a new concept, in which the
abuse of a street camera network is deterred by recording and disclosing
browsing-history, is proposed.
[Reference]
Yusaku Fujii and Noriaki Yoshiura, "Will every streetlight have network cameras in the near
future?", SCIENCE, eLetters
(21 October 2016) .
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Mitra Djamal, Dr.-Ing.
Vice President, Sumatera Institute of Technology (Indonesia)
Professor,
Bandung Institute of Technology (Indonesia)
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[Title]
The Use of Internet of Things (IoT) for Energy
Conservation
[Abstract]
Internet of Things (IoT) is a network of physical
devices that allows objects to collaborate and exchange information. IoT offers 3 important aspects in its utilization, namely
monitoring, modeling and evaluation, and automation. Then the integration of IoT on the cloud also allows the involvement of many
variables in decision making. This is what makes IoT
very useful in energy conservation. One device that requires a large amount
of energy is Air Conditioner (AC). To make energy savings, the AC comfort
level setting is usually done by setting the set point of the AC thermostat.
However, this simple algorithm will not necessarily be suitable for all room
conditions and the surrounding environment (outdoor temperature). In this
study, an IoT-based energy conservation system was
developed and additional algorithms are carried out related to the condition
of the room and the environment that affect AC energy consumption. The air
conditioner used is integrated with an IoT-based
multi-sensor and actuator system to obtain information about the condition of
the room, environmental conditions (outdoor temperature), and energy
consumption by AC in real-time which is then sent to the cloud. Then the
actuator will control the AC compressor. These parameters will be used in
energy-saving algorithms and AC comfort settings. The algorithm used is the
Fuzzy-PID algorithm and hysteresis that is run on the cloud. From the
research that has been done, it was found that the system developed with
fuzzy-PID and hysteresis algorithm was able to save AC energy consumption by
50% and overcome excessive cooling.
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Hiroshi
Sakurai, Ph.D
Professor, Gunma University (Japan)
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[Title]
Quantitative imaging by using a newly developing photon counting CT system
[Abstract]
Recently, quantitative imagings such as electron
density and effective atomic number distribution in a human body are
attracted. The electron density distribution is a one of key information for
precise treatment planning by heavy ion radiotherapies to estimate the
stopping power of charged particles [1]. Furthermore, an effective atomic
number analysis open a material identification in a clinical application such
as kidney stone characterization, definitive
diagnosis of gout
[2].
Recently we have suggested a method to obtain electron densities and
effective atomic numbers by using multi-energy X-ray CT based on the idea by Torikoshi et al [3]. Our simulation study and
measurements by a newly developing photon counting CT system indicate a
possibility to measure electron density within an accuracy of 1% and
effective atomic number within an accuracy of 5% in the human body [4].
[1] D. Schardt T. Elsasser, and D.
Schulz-Ertner, Rev. Mod. Phys. 82 (2010) 383-425.
[2] M. Pattino, A. Prochowski, M. D.
Agrawal, F. J. Simeone, R. Guputa,
P. H. Hahn, D. V. Sahani, Radiographics
36 (2016) 1087-1105.
[3] M. Torikoshi, T. Tsunoo, M. Sakaki, M. Endo, Y. Noda, Y. Ohno,
T. Kohno, K. Hyodo, K. Uesugi
and N. Yagi, Phys. Med. Biol. 48 (2003) 673-685.
[4] A. Nagao, T.
Yamazaki, M. Torikoshi, N. Sunaguchi,
T. Kanai, T. Hayashi, K. Suzuki, K. Hoshi and H. Sakurai, Appl. Mech. Mater.
888 (2019) 83-88.
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Anna Kuwana, Ph.D
Assistant Professor, Gunma University (Japan)
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[Title]
Development of a simulation method specialized for flow in a long and
narrow region
[Abstract]
We can find a lot of incompressible fluid flows in very long regions such as
rivers, blood vessels, tunnels and pipes. The main problem to calculate the
flow in long regions is that it is quite difficult satisfy the equation of
continuity precisely. A new simple numerical method that is suitable for the
calculation of incompressible fluid flows in very long regions is developed.
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Nobuaki
Nakazawa, Ph.D
Associate Professor, Gunma University (Japan)
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[Title]
Recognition of Face Orientations Based on Nostril Feature
[Abstract]
In this research, we developed a non-contact man-machine interface based on
face orientation. Real-time images of an operator’s face were observed by USB
camera and changes in the dark area of the nostrils were utilized for the
recognition of face orientation. When the operator faced up, dark areas of
both nostrils increased in area, and when the operator faced down, such dark
areas decreased, respectively. In contrast, the difference between nostril
areas could be caused when the face was turn to the side. Here, these
characteristics were reflected in face-orientation recognition. The interface
we developed was applied to electrical wheelchair operation.
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Gualberto A.
Magdaraog Jr., Ph.D
Associate Professor, Bulacan State University (Philippines)
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[Title]
The Impact of Gender Composition in Decision Making and Class Performance:
Inputs for Learning Activities and Teaching Strategies in Accounting Courses
[Abstract]
The study aims to determine the impact of gender among accountancy students
in decision making and their performance in the cost accounting course.
In the case of Bulacan State University in Malolos City, Bulacan,
Philippines, the ratio of male to female in a class has continuously
decreasing. This characteristic has resemblance to the declining
performance in the CPA licensure examination by the graduates of the institution.
In order to find relativity to these two variables, an analysis of two groups
was applied using the scores in the decision-making questionnaire and class
performance in one of the courses in accountancy program as oppose to the
ratio of male and female in the class. The results on decision making were
categorize according to thoroughness, control, hesitancy, social resistance,
optimizing, principled and distinctive.
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