6th WINGS-PES Salon was held.
Date/Time: October 18 (Friday) 15:30-17:30
Place: Conference Room, 2nd floor, Transdisciplinary Sciences Bldg. on Kashiwa Campus
Program:
- Program Guidance, Member Introductions
- Research Presentation by 2 nd term students, Q&A Session
- Presentation Review
The 6th Salon of Excellence was an opportunity for new program students, Sasaki, Mikami, and Muramatsu to explain their research to a panel of senior faculty and researchers from each of the disciplines represented on campus. The multi-disciplinary audience was requested to submit their insights and inquiries to assist presenters consider other perspectives and broader social context for their research. After all presentations and Q&A sessions, students further reviewed the presentations with professor Deguchi (program coordinator) and professor Consalvi (presentation trainer).
Please continue reading for each presenter’s research abstract and peer feedback.
MIKAMI Kohei (M1/ Dept. of Ocean Technology, Policy, and Environment, GSFS)
Research Title
Using fiber optical sensor and inverse finite element method to study structural health monitoring of ship hulls
Abstract
Ships are being built larger and larger to pursue efficiency However, large ships have experienced breakage accidents. In order to design and operate ships safely and efficiently engineers need an accurate understanding of the stress and loads bei ng placed on ships as they actually sail the sea. One method we are developing to monitor a ship s structural health includes a system to reproduce the conditions in cyberspace. We measure/ collect actual ship data/information related to ship strain and re produce displacement using the inverse Finite Element Method. Then, stress is estimated from displacement and Finite Element Analysis in order to determine the ship s structural health. The health monitoring system will contribute to a ships operation and help determine the appropriate timing for maintenance. Furthermore, the system can provide insight into a ship s structural design and help engineers design safer and more efficient ships.
Peer Feedback
Although I knew nothing about his research field, I was intrigued by the high demand of environmental measures in the maritime field. After the presentation, I immediately checked the word EEDI. Also, methods that are not commonly used in my field, such as “digital twin”, were interesting and I am conside ring how I might make use these ideas for my own research.
Muramatsu
His research intrigued me even though it is completely different from measuring molecular dynamics at the nano level in my research field. Ships are used longer than automobiles and airplanes, and I thought that there was no room for significant design improvements. However, I learned from his presentation that it is necessary to make an optimal design to reduce the burden on the environment, depending on the ships ma terial, transported goods, and the route to be navigated. I witnessed an environmental issue being studied from various fields, and I was inspired by his presentation.
Sasaki
MURAMATSU Shun (M1/ Dept. of Human and Engineered Environmental Studies, GSFS)
Research Title
Development of non-contact heart rate monitor using microphones
Abstract
Recently, measuring vital signs such as blood pressure, body temperature, and heart rate is vital for health care. However, instruments are typically attached directly to the body, which is a big burden, especially for long-term monitoring of elderly people, dogs and cats, livestock and the like. For this reason, new measuring methods are actively studied and developed such as cuff-less and non-contact measurements. Considering the importance of the heart as a vital sign measurement, the presenter is considering possibilities for developing a non-contact heart rate monitor.
The author measures heart rate using heart sounds observed by microphones. Other methods of non-contact heart rate measurement being considered such as measuring body movement using microwaves have problems in terms of cost and accuracy. Other methods such as measuring the brightness of the face surface by continuously exposing the skin to a camera cannot be applied to animals with body hair. To measure heart sounds with microphones, it is necessary to remove countless noises including environmental sounds and lung sounds to isolate heart sounds. The author has set a goal to extract heart sounds at a distance of 50 cm from the microphones to the target, and combines two processes based on the features of heart sounds in order to achieve the goal. Specifically, a directional microphone removes different directional noises, a digital filter removes different frequency noises, and blind source separation technology removes different waveform pattern noises.
Peer Feedback
His theme is easy to understand for those who are in different fields, and it is expected to be put to practical use. The major obstacle for practical use will be how to extract only the heart sounds from all the other various sounds generated. Extracting only the target component from data with various components is also a big issue in my own research, measuring molecular dynamics at the nano level and I hope to share information with him if there is something useful for mutual research.
Sasaki
I was very interested in his presentation about developing a device that can measure heart sounds using a
Mikami
microphone. It will be a useful technology for medical care in Japan, which has an aging population, because it enables non contact heart sound measur ement with less effort. I couldn’t catch the relationship of measurement methods, so I would like to see the pros and cons of other methods. And, the technology of separating noise from the sound picked up using microphones is considered to be an issue not only in heart sound measurement but also in other fields, so research in other fields may be helpful.
SASAKI Daisuke (M1/ Dept. of Advanced Materials Science, GSFS)
Research Title
Correlation between molecular dynamics and material durability, using Diffracted X ray Blinking
Abstract
This research aims to establish a new method for evaluating the durability of substances for various functional materials by performing nano level high precision measurements. Deterioration of substances occurs due to changes in molecular structure or denaturation of the molecules, so it is thought that molecular dynamics will change as the material deteriorates. We believe that it is possible to evaluate the durability of substances with high accuracy by measuring this change in molecular dynamics. To that end, we have begun to measure the molecular dynamics of a gear type molecule ([{AuP (p Tol) 3 4 bim] (ClO 4 2 )) that exhibits simple rotational motion with high accuracy. In my fourth year as an undergradu ate I successfully synthesized a gear shaped molecule to be measured and it was also confirmed by NMR that
the molecular dynamics became faster with increasing temperature. At present, the molecular dynamics is measured using a measurement method called di ffraction X ray blinking (DXB) on powder crystals of gear type molecules.
Peer Feedback
I was surprised to learn about technology to observe molecular dynamics using X ray blinking. From my lack of knowledge, I couldn’t understand some technical terms, so explanations will help my understanding. Also, I would like to know how the method will be put into practical use.
Mikami
His presentation was confident and persuasive. Furthermore, I was inspired by his concrete vision for
Muramatsu
future work such as already investigating study abroad opportunities in the doctoral program. On the other
hand, it was difficult for me to understand the position of his research accurately because I am in the field of
heart sound measuring. Thus, I realized the difficulty of conveying my thoughts across different fields.