The Innovative Project “Digital Twin · Supercomputing · Virtual Reality · Remote Diagnosis,” jointly launched by the Centre for Applied Mathematics of the University of Macau (UM) and the Shenzhen Institutes of Advanced Technology (SIAT) of Chinese Academy of Sciences, was exhibited at the 26th edition of China Hi-Tech Fair and garnered extensive attention. Utilizing digital twin technology, the project achieves precise digital modeling of people, objects, and events in the physical world. By leveraging supercomputers for rapid and high-precision numerical simulations of physical fields and integrating mixed reality (MR) technology, the team has constructed highly realistic virtual models that vividly present their computational achievements, highlighting the core strengths of their technology.

During the fair, the booth of the joint team drew attention from provincial and municipal leaders, research institutions, universities, and media reporters, including those from China Central Television (CCTV). Experts in attendance provided high praise for the project and engaged actively with questions, to which team members responded enthusiastically. Additionally, the project has collaborated with multiple medical institutions to validate the practical application effects of numerical simulation technology, not only significantly enhancing the project’s practical value but also demonstrating the vast application prospects of digital twin technology across different fields.

Through this grand event, the joint team demonstrated its innovative capabilities in the field of digital twins, laying a solid foundation for future exchanges and cooperation with domestic and international research institutions and enterprises. In the future, UM will continue to expand cooperation with other scientific research institutions, strengthen research on innovative technologies, explore more possibilities of virtual reality, and promote the industrialization process of digital twin technology.

The 26th China Hi-Tech Fair was successfully held from November 14 to 16, at the Shenzhen World Exhibition & Convention Center. As one of the largest and most influential technology fairs in China, the fair brought together top-tier innovative technologies and projects from around the globe, attracting scholars, experts, and industry leaders from all over the world.

Dear Colleagues and Students,

We are delighted to present to you the 17th issue of the Faculty of Science and Technology’s E-Newsletter of the University of Macau. This edition highlights the latest news, research endeavors, and activities of the Faculty from August to October 2024. You can access the E-Newsletter by visiting the following link: https://www.fst.um.edu.mo/wp-content/uploads/2024/11/Issue-17-August-October-2024.pdf

Additionally, if you would like to explore our previous E-Newsletters, please visit the FST website at: https://www.fst.um.edu.mo/annual-report/

We extend our warmest wishes for the well-being and happiness of you and your families.

Best Regards,
Faculty of Science and Technology
University of Macau

Mr. Jiahang Chen, a doctoral student, Mr. Yifan Yang, a doctoral student, and Ms. Lam Lam, a master student, from the Department of Electromechanical Engineering (EME), Faculty of Science and Technology (FST), University of Macau (UM), have won the best paper awards at the 5th International Symposium on Thermal-Fluid Dynamics (ISTFD 2024), which was hosted by Xi’an Jiaotong University (XJTU). Experts at the symposium fully recognized the effort and achievement of the research team of UM. This year’s symposium gathered over a hundred scholars and researchers from around the world, featuring more than 100 oral and poster presentations, 9 plenary lectures, and 20 thematic lectures, all led by distinguished researchers in the field of thermal fluids, showcasing the most advanced knowledge and technology in the domain.

In the symposium, Mr. Jiahang Chen represented the research group to present a paper titled “Experimental Investigation of Pressure Drop and Heat Transfer Characteristics of 3D-Printed Mini Tubes using Different Fabrication Parameters”. As an advanced manufacturing technology, Selective Laser Melting (SLM) 3D printing technique, which was one of the additive manufacturing methods, could be used to print sophisticated and small-sized heat exchangers with large heat transfer areas so it has attracted high attention in the thermal engineering community in recent years. Due to the differences in inside wall surface characteristics between 3D-printed tubes and traditional tubes, the research team experimentally compared the pressure drop and heat transfer characteristics of 3D-printed stainless-steel tubes under different fabrication parameters. The results showed that the friction factors and heat transfer coefficients of the 3D-printed tube were directly affected by different printing parameters.

Ms. Lam Lam represented the group to present a paper titled “Experimental Investigation on Heat Transfer and Pressure Drop Characteristics of 3D Printed Tubes with Semicircular and Round-edge Semicircular Channels”. A pair of semicircular channels and rounded semicircular channels were manufactured by 3D printing methods to imitate the different channels in printed circuit heat exchangers (PCHE). The pressure drop of the two tubes was measured and compared under isothermal and uniform heat flux boundary conditions. The research results of this study provide a fundamental understanding of the semicircular channel with or without round-edge inside the PCHE.

The two research projects were supervised by Prof. Lam Mou Tam, Professor of Department of EME. Mr. Jiahang Chen’s research project is sponsored by the Science and Technology Development Fund (FDCT) and the National Natural Science Foundation of China (NSFC). Ms. Lam Lam’s research project is sponsored by the Macao Science and Technology Development Fund (FDCT) and the Ministry of Science and Technology of the People’s Republic of China (MOST).

A former Ph. D. graduate of the Biomedical Imaging Laboratory (BIG) from the Faculty of Science and Technology at the University of Macau, Jingzhang Sun, received the best technical paper award of the Journal of Nuclear Cardiology (JNC) at the 29^th Annual Meeting of the American Society of Nuclear Cardiology (ASNC), held in Austin, Texas, US. ASNC, the world’s largest and most specialized academic association in nuclear cardiology, selects one exceptional technical paper published in JNC from hundreds of submissions worldwide each year.

The awarded study, entitled “Deep Learning-Based Denoising in Projection-Domain and Reconstruction-Domain for Low-Dose Myocardial Perfusion SPECT”, was led by Prof. Greta Mok from FST, collaborated with Taipei Veterans General Hospital and Yale University. This work demonstrates that using deep learning techniques in denoising in the projection domain (raw data) is superior to the denoising in the reconstruction domain (processed data) for myocardial perfusion single photon emission computed tomography (SPECT), a well-established method for diagnosing coronary artery disease yet with radiation concern. This study demonstrates the state-of-the-art deep learning-based denoising performance for SPECT, which can be translated to reduced ionizing radiation to patients and medical staff, as well as shortened scan time to increase patient throughput and enhanced patients’ comfort.

BIG is one of the world-leading teams in applying deep learning techniques in SPECT, with strong emphasis on clinical translation. This study was supported by the first Excellent Young Scientists Fund (Hong Kong and Macau) from the National Natural Science Foundation of China (81922080).

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PhD students Huang Zhuangtong and Guan Yongqi from the Department of Computer and Information Science at the Faculty of Science and Technology, under the guidance of Assistant Professor Wang Ye, have had two research papers fully accepted by top-tier conferences in the field of information security: IEEE S&P 2025 and NDSS 2025. These conferences are considered among the top four in the field, alongside ACM CCS and USENIX Security.

According to data from the past five years, the acceptance rates for IEEE S&P and NDSS are 13% and 16%, respectively. Both conferences are rated as Class A by the China Computer Federation (CCF) and have received the highest A* rating in the Core Conference Ranking, highlighting their significant academic value.

This achievement marks the first time that the University of Macau has been listed as the primary institution presenting papers at these top-tier information security conferences. It is not only the university’s first breakthrough in this domain but also the first time for an institution from Macao to present research results at such high-level conferences. This milestone underscores the international recognition of the UM’s research in information security.

A brief introduction to relevant research is as follows:
https://www.fst.um.edu.mo/news/university-of-macaus-research-achievements-accepted-by-top-information-security-conferences/

首個成功案例

譚志豐是土木及環境工程系的畢業生，同時也是首位澳門大學與華南理工大學「本科生2+2聯合培養計劃」的首屆畢業生。作為聯培計劃的首個成功案例，他的經歷標誌著大灣區高等教育合作邁向新階段，彰顯了大灣區高校跨校跨境合作的潛力，他的成功故事也將啟發更多渴望在大灣區發展的青年學子。

偶然的契機，開啟大灣區求學之路

譚志豐的求學之路始於一次偶然的發現。高中時，他通過電視節目得悉這個聯培計劃，學生只需在澳大修讀為期兩年的土木工程學科，以及在華南理工大學修讀同樣為期兩年的土木專業課程，即可在四年內獲取兩所知名大學本科學位。課程內容發揮兩地高校的優勢，同時更針對性地為培養大灣區專才量身訂制。聯培計劃不僅能擴闊視野，也能令學生深入了解兩地的文化氛圍和教育環境，這對他來說無疑是一個龐大的吸引力。「我當時覺得這樣的機會實屬難得，既能拿到兩個學位，又能提前親身體驗大灣區的發展趨勢，簡直一石二鳥。」譚志豐說道。

拓展視野，勇往直前

談及這個計劃的最大優勢時，譚志豐表示，計劃讓他得以深入體驗內地的生活方式和學習環境，視野的拓寬同時全方位提升自身能力。尤其在疫情結束後，他得以親身走進大灣區的核心企業與施工現場，與業界專家進行交流，從而對行業未來走向有了更透徹的認識。「這些經歷讓我更加確信未來的方向，因為我看到了大灣區未來發展的巨大潛力。」作為該計劃的首名畢業生，譚志豐也遇到了不少挑戰，特別是在課程設計和學分安排方面。「最大的挑戰是畢竟我是第一名參加者，所以在實際操作中會有一些預想不到的困難。」然而，正是這些挑戰恰恰鍛煉了他解決問題的能力。「我學會了主動解決問題，將遇到的情況與兩校教授反映，也曾主動約見雙方的教授，最終成功解決了不少難題。」這些經歷讓他受益匪淺，同時也變得更獨立自信。

文化交融，語言提升

在華南理工大學學習期間，譚志豐不僅提升了普通話水平，還深刻感受到了內地教學方式的不同。「內地的課程更注重實踐操作，而澳大則提供了更多的輔導，如助教(Teaching Assistant) 主持的輔導班等。」他補充道，儘管兩地存在細微的文化差異，但整體而言，這些經歷讓他獲益良多。如今，譚志豐正在澳大攻讀土木及環境工程碩士學位。對於未來，譚志豐希望成為一個能夠促進兩地合作橋樑的工程師，他打算先取得工程師執照並在澳門積累一定工作經驗後，再赴大灣區發展。

跨校跨境合作的意義

譚志豐相信，這樣的跨校跨境合作計劃對於學生而言意義重大，不僅為他們提供全新的學習與成長平台，還有助於增進大灣區內各高校之間的緊密交流與合作，推動區內協同發展。對於有志參加聯培計劃的師弟師妹，譚志豐總結了幾點建議：「首先要具備一定的中文能力，這對於順利完成學業至關重要；其次，要做好解決各種挑戰的心理準備，保持積極主動的態度；最後，要合理規劃時間，確保能按時完成所有課程。」通過譚志豐成功先例，大灣區高校將繼續深化合作，針對性地培養適用區內的專才。譚志豐以自己勇於嘗試和努力不懈的精神，同樣開創了屬於自己的精彩篇章。這不僅是個人成長的見證，也是大灣區教育合作成功的典範。