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High School Math Department: A Math Modeling Lecture

September 26, 2019

On September 22th, Professor Jian-Guo Dai, an expert in civil engineering from the Hong Kong Polytechnic University, was invited to SHSID to give a lecture.

The lecture was called “Mathematical Modeling in Urban Infrastructure Development: Civil Engineering Perspective,” which focused on applying math modeling methods to real world engineering problems. At the beginning of the lecture, Dr. Dai introduced to us the basic concepts of engineering and math modeling through some everyday examples, like high towers and large suspension bridges, letting the students know how important math modeling could be in designing and building these structures. He then elaborated on two main examples: building a tunnel and designing concrete wall with steel support. Using math modeling methods and some knowledge from physics and chemistry, he listed out a differential equation to describe the supporting force needed by a tunnel. In addition, Professor Dai showed how time and depth of the concrete would affect the rate at which the steel reinforcement support was corroding. Professor Dai ended with stressing the idea that math could be useful in any subject, so it is important to know how to use math as a tool to solve problems. All students and teachers greatly enjoyed the lecture.

(Written by He Feng Ming Picture by Wang Qian)