201031 We Want to Go to Space

Title:
We Want to Go to Space

Speaker:
吳宗信 (Jong-Shinn Wu), Distinguished Professor, Department of Mechanical Engineering, National Chiao Tung University

Time:
10/31 (Sat.) 7 pm PDT, 8 pm MDT, 9 pm CDT, 10 pm EDT
11/01 (Sun.) 10 am Taiwan

Keywords:
hybrid rocket technology, plasma physics, parallel computing, hybrid rocket propulsion, avionics, TT&C, light-weight structure, system engineering

  本次演講未提供錄影

Abstract:
In this talk, I will describe why and how ARRC (Advanced Rocket Research Center) of National Chiao Tung University, Taiwan, has been working on prototyping satellite launch vehicle technologies using hybrid rocket propulsion for more than 10 years with very limited resources. In addition, other major technologies associated with advanced rocket development include avionic system, long-distance telecommunication system and light-weight structure design/fabrication will be briefly introduced. These widely disciplinary technologies are synthetically integrated through the exercise of system engineering and realized through the use of modern IT tools. Finally, the roadmap to space is outlined at the end.

201024 Spectroscopic Signatures of Low-dimensional Excitonic Systems

Title:
Spectroscopic Signatures of Low-dimensional Excitonic Systems

Speaker:
莊宸 (Chern Chuang), PhD, University of Toronto

Time:
10/24 (Sat.) 5 pm PDT, 6 pm MDT, 7 pm CDT, 8 pm EDT
10/25 (Sun.) 8 am Taiwan

Keywords:
Chemistry, Theoretical chemistry, Chemical physics, Exciton, 2D Material, Organic Dye Aggregate, Dispersion

Abstract:
Molecular semiconductors are a group of promising materials featuring low manufacturing cost and ease of processing. One of the key strategies in assessing its optoelectronic prospect is the combination of the modularity of constituent molecules and the packing conditions that control the intermolecular interactions. In many cases the latter is challenging to characterize by conventional experimental analytical tools such as x-ray scattering or electron microscopy, leaving optical measurements as the only option. We theoretically establish close links between the packing conditions and its spectroscopic signatures that can be routinely measured in the laboratory. For two-dimensional molecular solids we derive closed-form expressions for the anisotropic dispersion relation in the long wavelength limit using a continuum approximation. This allows us to deduce the E^0.5 scaling of the exciton density of states close to the band edge that leads to robustness of large coherent length against disorder and thermal noise. Analytical expressions predicting (transient) absorption peak splittings are derived that can be useful for inferring structure-function relationship in low-dimensional semiconducting solids.

201017 The 5th C of 21st Century Education -- Computational Thinking

Title:
The 5th C of 21st Century Education -- Computational Thinking

Speaker:
黃竹珍 (Joey Huang), PhD, University of California Irvine

Time:
10/17 (Sat.) 7 pm PDT, 8 pm MDT, 9 pm CDT, 10 pm EDT
10/18 (Sun.) 10 am Taiwan

Keywords:
Learning Sciences, Computational Thinking, Collaboration, Computer Science Education, K-12 Education, Stem Learning, Middle School

Abstract:
The presentation will provide an introduction to computational thinking (CT) and its implementation in K-12 education. Joey will be presenting her work regarding CT and collaboration to discuss the emerging issues of STEM education and the future direction of teaching and learning. The study aims to foreground educators’ understanding of what it means for younger students in the middle school classroom setting to learn CT collaboratively. Additionally, through the understanding of social interactions and structures, the work examined how CT was practiced socially in a middle school setting in order to advance the current CT framework which informs the instructional design and curricular aims in computer science education.