Yesterday my school announced that we will continue remote learning through June 13.

For sure the social distances helps the case number slow down, and watching the instructors " playing the movie " is a little different from we all sit in the classroom.

When the lecturer courses are happening in the classroom, we are playing the student role there. The instructor can get our reactions right away, but sitting in front of the laptop without turning on the video makes huge difference to the instructor for checking our understanding.

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The social distances order makes this term even harder for us to attend any seminar. So our instructor asked us to find some interesting videos related to our field and write something about the presentation.

 

The following is what I wrote for the assignment.

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Received one kit for the experiment physics in the beginning of this week, but I did not know how I am going to make it work. Learning from the hands on experiment is the best way for me to memorize the principles in the real world.


After several failures, finally I got the LED blinking.

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Since the COVID-19 coronavirus started to spread out around the world, I was worried about my family and friends who are in Taiwan. As you might see that Taiwan has been highlighted in the news of making more face masks in short period of time, now things are under control over there, but my family starts to worried about me staying in the USA.  spring flower blooms
I did go to the store and pick enough food to stay home during the spring break, and I will be ok.

………………………以下部分內容來自katunews

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After COVID-19 'attacks' the USA, my family and friends were worried about me. I did go grocery shopping and try to stay positive.

Panic buying?
Looks like both cauliflower and broccoli are very popular, but I like green cabbage which still available for all customers to pick!

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This is just a short report for a talk in my department.

   Thermionic Cathodes were first discovered by Edison in 1883. It was not until 1920 that cathode thermionic emission was found. After several improvements, thermionic cathodes could be used as a device with arc discharge caused by thermionic emission of the cathode, but the temperature was still higher than 1000º C back then. It was not until 2005 that a new method was used for distributing nano-crystalline scandium oxide in the tungsten powder, which helped the cathode achieved emission levels below 970 º C. The goal is to make higher cathode emission with small size, low power, low capacitance for using in computer monitors and high-quality television.

 

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Machine learning is a powerful way to improve the traditional experiment process. I learned in this seminar about how to use active learning in building models can evaluate data in real time. This method can save time in data collection as well as in the result characterization. In this seminar, the speaker mentioned the potential of this technique can have efficiency with analysis data. 

            What I have learned from the seminar: 

Process data including data selection and correction.

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This is a short summary of the seminar from my department.

The idea of inertial electrostatic fusion looks like those high technologies shown in movies. In this seminar the speaker introduced Vlasov simulation to avoid the complications caused by collisions. The experiment used laser shock waves to bring fuel spheres include deuterium and tritium to extremely high temperatures and pressures to trigger nuclear fusion reactions. One interesting thing that I learned in the seminar related to instabilities of a spherically convergent discharge, for example, plasma instability in fast spherical discharge. If it is unstable, how can the calculation be done?

Those videos and images showed in the talk not only help me to understand the topic but also explain about the measurements of electron transparency. Instead of using safe low energy electrons for measurements, the speaker used high power to produce effective electrode transparency. What kind of calculation do you use to find the energy output from the device? Or is there a monitor that connected to the setting to read out the energy output?

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The most interesting thing about this seminar was learning that the powerful pulsed laser might damage the vision if not used in the way it was designed to be used. In addition to this since the pulsed laser has short width, we can image the pulse lasers are bursting like machine gun fire. Data on the repetition rate of the pulsed laser can be gathered from the target so that an analysis can be performed later. 

          As a non-contact processing method, laser has its unique advantages and there are lots of applications in medicine, for example: drug delivery, tumor labeling, and tumor destruction. As the research in the pulsed laser field continues developing, the application of pulsed lasers will be more and more widespread.

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Happy New Year 2020
🎉Happy New Year 2020 !

隨著2019年招金豬的月曆來到最後一頁,從亞州超市帶回來的鴻運鼠也已準備好要掛牆上了!

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Time flies by and it's the end of 2019.  Want to tell all my friends and family " Happy new year & best luck and wish to you all."
What a wonderful day
想要對我的朋友和家人說新年快樂, 祝福大家新的一年都會天天開心, dreams come true!

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Started on Dec 15 to New Year's Eve, the most popular Christmas lighting event is back at Peacock Lane.

You can take a walk to this beautiful neighbor for Christmas displays.

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Time flies, and New Year is just around the corner.

Happy holidays

Just want to say happy holiday to all my friends, and wish you all have a very merry christmas!

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This building was new to me when I returned as a student last year. It's located at 632 SW Hall St. ,Portland, OR

Now KMC becomes one of my favorite places on campus. 

KMC@PSU 

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Time flies, and it's time for me to prepare for the Comprehensive Exam.

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When most students are on their way home , I am on my way to the library. Since the comprehensive exam is scheduled on the first weekend of the first few weeks of the winter term.

I need to believe in myself that I can pass the comprehensive exam. So I study hard during the winter break.

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