Research Subject
Performance analysis and optimization of InSb based Thermo-Radiative Cell for Waste Heat Recovery

Impression of SU and Japan
It has been both a pleasure and an honor for me to be affiliated with Saitama University in Japan. My supervisor and departmental colleagues are extremely helpful and cooperative. The research laboratory is equipped with state-of-the-art instruments, which have consistently facilitated my research endeavors. Furthermore, I wish to express my appreciation for the attentiveness and care demonstrated by the staff and the I-house management team. Their commitment to addressing our concerns created an environment that felt akin to being in my home country. Japan, with its rich traditions and culture, has provided a unique backdrop for my academic pursuits. The inherent friendliness and disciplined nature of the people have left a lasting impression on me, leading me to regard the Japanese as among the most amiable individuals in the world. I anticipate that the valuable traditions and cultural aspects of Japan will continue to contribute positively to my daily life. I consider myself fortunate to be immersed in such an inspiring and friendly environment as I pursue my research activities at Saitama University. To all new students embarking on their journey at Saitama University and in Japan, I extend my heartfelt wishes for the best of luck. May this experience become the most enriching chapter of your lives.

Research Subject
Green Hydrogen Production through Advanced Catalysis and Innovative Carbon Capture Techniques incorporating Catalysis

Impression of SU and Japan
Whether at university, public or private centers, or school, the Japanese education design is committed and disciplined at any level. All we have seen or heard about the top-notch quality is not just fiction! As one of the world’s most high-tech countries, Japan has thrived in STEM (Science, technology, engineering, and mathematics). This makes it ideal for students in those fields. With plenty of programs to choose from, the academic choices are limitless. I was fortunate to be awarded a scholarship by ESITI international program to study for my Ph.D. for three years at Saitama University, one of the most famous universities in Japan. My supervisor is really supportive and helpful. If you are one of those people who prefer clean streets and cities with no trash dumped on the road, Japan is the perfect match for you. For a student, Japan is one of the finest places to get studies. Its diverse region and rich culture boast many architectural styles, tourist places, practices, traditions, and food. And the list is pretty much endless!

Research Subject
Human Computer Interaction, Computer Vision and Deep Learning

Impression of SU and Japan
Japan is one of the top countries to pursue higher education. That’s why I had a passionate to do my PhD from the Japanese universities. Later I found so many researchers with good quality in research in Bangladesh who pursued their PhD from Saitama University (SU). I talked to some of them and listened to the research quality of the SU. Then I applied to Professor Yoshinori Kobayashi to pursue my PhD and fortunately I got the chance. My professor is very kind and co-operative. I am very fortunate to have him as my supervisor. Also, I have found all the staff of SU are very friendly, helpful and student oriented. I hope I will be a pioneer researcher in the future after getting my PhD from SU. Finally, if anyone wants a friendly, helpful and safe environment besides good quality research environment, undoubtedly SU will be the best place for them.

Research Subject
Invariant measures for iterated function system's with inverses

Research Summary
Scientific revolution in the 17th century led to the discovery of an important branch of mathematics Analysis. Among its numerous other branches, functional analysis emerged as a rather complex and a diverse blend of Algebra and Topology. My research is related to functional analysis such as Invariant measures for iterated function systems with inverses and fixed point theory.

Impression of SU and Japan
I am extremely honored and privileged to have the opportunity of doing PhD at Saitama University.My supervisor has been really supportive and helpful. The other faculty and fellow students have been kind and supportive as well.
Moreover, I would like to appreciate the official workers of SU and International house due to their generous efforts to provide the required assistance. They have been very kind and supportive to provide any information. I've been inspired by their amazing work ethics. Additionally, I feel extremely secure while living in Japan as an international student.

Research Subject
Privacy Protection in Surveillance Cameras

Research Summary
In recent years, more and more surveillance cameras are being deployed throughout our surroundings, such as public parks, elevators, ATMs, airports, and highways and on many more places. These cameras are capturing huge amount of videos, at the same time, significant concerns about individual/human privacy have also been growing along with the vast application of surveillance cameras. Existing surveillance camera systems do not provide people with the right to control how facial information is collected and managed. There is violation of privacy rules in public surveillance cameras. Individuals’ faces are shown publicly without concern. Our research focuses on Enabling the privacy protection in surveillance cameras using Deep learning Techniques. Protect Individual’s Privacy. Blur the faces of individuals other than the required personal.

Impression of SU and Japan
The main reason I choose to study at Saitama University is because it has excellent reputation in Engineering and computing, with a stimulating environment. Saitama University has become one of the best universities in Japan; it has top class professors and is in the middle of a historic city, and accessible to everything. It has a strong international relations program which is perfect for me. I just love everything about Saitama University. The huge library, the park, I just found the place incredibly inspirational and motivating, the study programs, and the emphasis professors put hands-on practice. I am thrilled to learn about Japanese culture and excited to study where the technology is of high and excellent standard.

Research Subject
Hydrogen storage vessel Al/CFRP interface debonding for cooling effects：Numerical cohesive zone modeling and experimental validation

Research Summary
Nowadays, hydrogen (H2) fuel powered automotives are considered as one of the emerging prospects of clean hydrogen energy consumption. In these automotives, composite overwrapped pressure vessels (COPVs) are used extensively as H2 storage medium for their high strength to weight ratios. One of the commonly used COPVs in hydrogen vehicles is type-III vessel that consists of aluminum (Al) lined cylinder and overwrapped carbon fiber reinforced polymers (CFRP) composite laminates. This COPVs are usually used in high pressure and extreme temperature change situations wherever their mechanical behavior and failure resistance may be degraded. Very often pre-existed Al/CFRP interface debonding results in COPVs failure during service period. Our research aims to develop an interfacial cohesive zone damage modeling from fracture mechanics viewpoint considering the thermo-mechanical loading scenario of COPVs.

Impression of SU and Japan
It’s been a long time since the Japanese universities are higher education seeking destinations for students from all throughout the world. Saitama University is one of them which is well known for high quality education and skills development. So many Bangladeshi students graduated from this university and serving now in different academic and industrial sectors back in Bangladesh. I am also happy and feel proud to be admitted here for chasing my PhD degree. I wish all the best of this university. In addition, Japan as a country for receiving my higher education was always a dream to me specially for the well-mannered, supportive Japanese people as well as their inclusive attitudes to multiple cultures.

Research Subject
Estimating Noise Variance and Evaluating Image Quality

Research Summary
Communication in our daily lives become comfortable and easier due to the development of technology and social media. With the use of digital communication, the number of digital images also increases in our daily lives. Usually, images are captured mostly from digital camera or scanned from other resources.
At the same time, we can’t inevitably face with various image distortions introduced during image acquisition, compression, transmission and storage. Thus, the image quality assessment (IQA) method is widely studied for evaluating the influence of various distortions on perceived image quality.

Impression of SU and Japan
Studying in Japan and broadening my knowledge is my dream since I was young. Japan is not only technology sophisticated country but also a land of people with good culture and kind manner. When I was in my Myanmar university, I got the chance to attend the knowledge sharing seminar by the professors from various universities from various countries such as India, Australia, Japan, etc. I fortunately got the opportunity to join the signal processing lecture of the Professor Tetsuya Shimamura, Saitama University. Prof. Shimamura give the lecture and his way of teaching is letting the student to learn by encouraging with his rich experience. I was really impressive, and I recognize that this is the dream that I was chasing all the time. In fact, Saitama University is the famous national university in Japan with many good reputation history such as the winner of Noble Prize graduated from SU. Besides, the research in Engineering are very impressive. The university is green and clean environment. The transportation is convenient too at the same time as it is about 50 min distance from Tokyo. The teachers are kind and always ready to help students. I have one more opportunity to broader my communication while I am studying in Saitama University. I heard the news with the Google Developer Student Club, which is the student club for students interested in technologies empowered by Google developers. I participate in the GDSC Japan clubs and then get the opportunity to apply and become a founder and lead in GDSC, Saitama in 2022~2023. I feel that I can learn not only university based but also in Japan and international wide.

Research Subject
Device Simulation of Dilute Nitride Based Intermediate Band Solar Cell: Impact of Carrier Blocking Barrier Height on the Photovoltaic Performance

Research Summary
The aim of this study is to enhance the photovoltaic parameters, in particular the conversion efficiency by achieving the high gain from confined large carrier density. Height of the carrier blocking barrier will be taken into account to investigate the effect. In order to do this currently I am using the licensed version of silvaco atlas semiconductor devices simulation software. Silvaco atlas is a leading device simulation tool which will help us to develop and optimize new semiconductor solar cell with high efficiency prior to manufacturing.

Impression of SU and Japan
Saitama University is a renowned public university of Japan and it has great reputation in the field of innovative research. At the same time, it provides highly qualified and fruitful education in its clean, green and peaceful campus. The windows of this university is very wide for the international students for all the countries and religions of the world. The faculty members and stuffs are extremely kind and helpful in all respects. I am really lucky to have an incomparable living environment of Japan and very proud to be a student of this university.

Research Subject
Laser ultrasonic nondestructive technique for simultaneous measurement of metal plate thickness and elastic constants

Research Summary
Laser ultrasonics is a contactless ultrasonic inspection that uses lasers to generate and detect ultrasonic waves. The laser ultrasonic technique has been applied in measuring the thickness of the metal, but the elastic properties or the ultrasonic wave velocity in the specimen must be known in advance. Another limitation of this method is the high ultrasonic signal strength usually obtains at the ablation regime, but this mode causes damage on the surface of the specimen. We propose a method to simultaneously measure the thickness and the elastic constant of isotropic solid plates from access to only one side based on the fully nondestructive laser ultrasonic method.

Impression of SU and Japan
I was fortunate to be awarded a scholarship by ESITI international program to study for my Ph.D. for three years at Saitama University, one of the most famous universities in Japan. After one year of studying, I should say that what I got to see was much more than I expected, especially what I learn from my supervisor. I also have an opportunity for discussing with young researchers with great enthusiasm toward their research and broaden my knowledge in many fields.
I am very much impressed with the technology, transport system, time management, and clean environment. Also, the impression of Japanese people is that they are very polite, punctual, friendly, respectful, hard-working, clean, kind, respect towards rules, and well-mannered. I am very much happy to study in Japan.

Research Subject
Prosodic Features of Japanese Emotional Expressions using One-word Utterance “n”
* Results of a preliminary survey by native Japanese speakers *

Research Summary
Different kinds of expressing and reading emotions regarding to the cross-culture communication, which can cause great misunderstandings with people from other countries in situations such as social development and international negotiations. We are planning to find out the various pattern of prosodic features in speech perception impression based on a cross-cultural communication. Present studies used only one Japanese word ‘‘ん” to express different kinds of emotions, native Japanese speakers intentionally generated 8 emotional speeches based on the Japanese card game. Based on the preliminaries survey, we found out various patterns of prosodic features such as different F0 dynamic patterns and duration correspond to speaker’s emotions and intensions.

Impression of SU and Japan
Life in Japan is safe and secure, and there are so many things to study not only in modern technologies but also Japanese culture and traditions. Saitama University has a good environment and encourage lots of campus facilities for all students such as student club, counselling room, international exchange events, language class and especially strong support for research. So, we (international students) can stretch our intellectual horizons, and also engage in various experiences and opportunities. I am blessed that I have had the opportunity to study my PhD course at Saitama University.

Research Subject
Emotion recognition from bone conducted speech

Research Summary
This study aims to investigate the feasibility of using bone-conducted (BC) speech for emotion recognition. We will collect BC samples from about 30 participants while they speak in eight different emotional states: happy, sad, surprise, disgust, calm, fear, angry, and neutral. Then the samples will be processed and analyzed using deep learning techniques to classify the emotion conveyed in each sample. Simulation results will demonstrate the superiority of the proposed model's performance over the existing models in terms of recognition accuracy. The study argues that BC speech could be a promising method for emotion recognition, particularly in situations where traditional audio recording is not possible or desirable, such as in noisy environments or when privacy is a concern.

Impression of SU and Japan
Saitama university has a number of research centers and institutes that are dedicated to advancing knowledge in a variety of fields. In addition to its academic programs, Saitama University also offers a range of support services and facilities for students, including on-campus housing, career counseling, and language support. This institution produced a large number of Bangladeshi graduates who are currently employed in a variety of academic and industrial fields in Bangladesh. Japan, as a country, is known for its rich culture, advanced technology, and high standards of living. It is also home to some of the world's most prestigious universities and research institutions, making it a popular destination for international students and scholars.

Research Subject
Image Processing

Impression of SU and Japan
I would like to describe my reasons why I choose Saitama University to study in Japan. Saitama University is a famous university in Japan and many foreign students are studying for their education. So I have the opportunity to not only receive high-quality education but also experience everything from traditional arts, crafts, sport and music. This university owns very clean and hygienic campus with good facilities for research environment. And, I believe safety should be one of the top considerations. Japan is considered one of safest countries in the world. Moreover, studying abroad in Japan is one of my dreams.

Research Subject
Predicting the Fatigue Damage in Type III Filament Wound Carbon Fiber – Reinforced Plastic Composite Pressure Vessel

Impression of SU and Japan
When I was a student at National University of Civil Engineering, I were taught by many professors studied in Japan, I told myself that one day I will go to Japan and broaden my knowledge, not only the academic knowledge but also the culture and living manner of the Japanese. Furthermore, Japan is one of the countries having the strong mechanical field in the world. As a mechanical engineering, this possible become a very good chance for me to improve my competence and fulfill my dream. Now, I am a PhD student at Saitama University, the biggest University at Saitama province and one of the famous universities in Japan. The first time I came to Saitama University, I was impressed by its symbol at the gate. This symbol is very special and memorable because of its shape and meaning. After nearly a year studying, I see that Saitama University has adequate facilities and offers a good environment for students who want to study and research in Japan.

“If you explore every possible factor and ruminate over them to the point of squeezing your brain, you will have a better chance of getting things right."
(Masatoshi Koshiba, Nobel Prize, Physics, 2002)
Going to University, especially one as prestigious academic and research institution in Japan of Saitama University was a wonderful experience and memories. This was an opportunity for me to learn not only the world advancement in science and engineering technology as a material science passionate; specially semiconductors and devices, but also to learn about own-self; who I am, what want to do in life, and what is my responsibility for societies and thereby nation. Although, it was un-even and challenging at initial stage, I was able to retain me on the right path throughout years. Regardless, the evaluation of pros and cons, I embraced every opportunity, therefore, I became successful to find out something on which I was passionate and persistent. Thus, I achieved my dream of doctoral graduation, most importantly, knowledges to go further way as a passionate researcher with a good network and communities.
Three years of study and research in Saidai helped me to realize a concurrent study and advanced research with a new and innovative ideas related to my research field with its proper execution, therefore, I was offered a postdoctoral researcher position in Saitama University within several days of graduation and thereafter senior researcher position in Ritsumeikan University within a month. My research mainly focusses on preparation of 2D layered semiconductor and oxide materials using a simple economical way for the applications in electronic, optical and photovoltaic devices.
However, I am so lucky to have many Japanese friends including my lab members and staffs. I encourage to all students from different parts of the world to take an opportunity to study in Japan; especially at Saitama University to explore your dream, potentiality and knowledge as well as enjoy Japanese life even though you are not familiar with Japanese language. Japan will offer you a secured quality life. Japanese peoples are very much kind, polite and cooperative!!!! Best wishes for Saidai and saidai’s family.

My name is Truong Cong Tuan. I am a former PhD student at Advanced Photonics & Sensing Laboratory (Shioda Lab), Graduate School of Science and Engineering, Saitama University. I presently am a lecturer in Precisely Mechanical and Optical Engineering, School of Mechanical Engineering, Hanoi University of Science and Engineering, Hanoi, Vietnam.
Before coming to Japan, the image I had of Japan, was limited to Toyota, Honda, Sony, Sushi & earthquakes. But now I can appreciate that technology here is not only the big names like Honda, Panasonic and many others but it is part and parcel of everyday life, be it vending machines, toilet seats or even Suica card. Japanese food is so diverse as the cooking style & dishes are different in every prefecture. People here as very polite, hardworking, disciplined and proud of their culture & roots.
Saitama University is one of the famous University in Japan with lot of international students. Saitama University has good facilities for students such as library, cafeteria, gym ... Laboratory has all the necessary equipment for students to study and to do experiment. The course covers a wide research fields of Information Technology, Material Science, Mechanical Engineering and other fields. All courses are conducted in English.
I love the peaceful life & beautiful scenic views of SU, the best part about SU is that it is at less than a hour’s distance from the heart of Tokyo with all its glitter and fancy life and at the same time it has all the natural beauty of Chichibu, Kawagoe & Nagatoro equally close to it. Learning Japanese language is one of the way which helps to feel at home here. Then interacting with local people, travelling, enjoying their tradition are few things which widen your knowledge about Japan and it ultimately help one to adjust to it. Although being pure vegetarian, I am not yet able to adjust to Japanese food. It is a very good opportunity to avail, as Japanese universities are equipped with excellent infrastructure, intelligent & dedicated professors who are very much involved in your studies/ research. There labs are full of resources and you will get a very good chance of practical learning in university and other seminars, conferences, internships you attend while being here. Overall the SU is very safe, convenient, humble and a place to learn & enjoy.

I am Dr. Jaker Hossain, Associate Professor of Department of Electrical and Electronic Engineering, University of Rajshahi, Bangladesh. I came to Saitama University, Japan in September 2014 for my PhD program. Studying in Japan is a great privilege as one can get a nice and excellent research environment here. The life in Japan is highly secured and interesting. Japanese people are so cordial to help in any manner. Japanese universities have world class research facilities. Saitama University has a nice campus and the people around here are very nice. I have many nice memories at Saitama University. I was very lucky to be a part of world renowned Shirai Laboratory at Saitama University. I am now trying to establish a research lab in Bangladesh for doing research on energy harvesting based on the knowledge I acquired during my PhD study in Japan. A memory of my farewell party with my supervisor and lab mates.

I guess it's difficulty to find even a single petal of Sakura in the campus of Saitama University, in the sunny time of the late spring. But my memories of five years studying and researching life in SU do not fade away at all. Firstly, I have to give my great appreciate to MEXT for their support with MEXT Scholarship to me for my PhD Program in SU. And very much thanks to all the people who helped me in SU, supervisors, office staffs, lab mates, technicians, neighbors of my dormitory and so forth. There never were trouble or disturb during our interfacing, and they always have maintained an amicable smile which every oversea student who stayed in SU can not forget. (Dr. Qiming Liu, PhD degrees in Materials Science under the supervision of Prof. Hajime Shirai in 2015, when then he stayed in Shirai lab as a project researcher for two years. Currently, he is an associate professor in the institute of electronic materials of Lanzhou University, China.)