santiago_log
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- | We're learning at a decent pace how to use Hubo and I've found quite a few changes I'd like to make to the manual. | + | We're learning at a decent pace how to use Hubo and I've found quite a few changes I'd like to make to the manual; that seems to be a lot of English stuff and correction of charts within it. For example, our motor drivers work on a separate number system apart from what is used in PODO. So, say you're sending a command to the motor without first entering the Daemon. The command could do nothing, or it could move the wrong joint, and that would be awful. |
- | We'll be updating parts of the Hubo manual because we found some limits to what we can actually change on the driver board. Other than that, I finally get to exercise some of my grammar and spelling stickler skills on the PDF editing software. | + | The last thing we worked on was how to check a motor driver for errors, change parameters, select, and move motors. |
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+ | We' | ||
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+ | Other than that, I finally get to exercise some of my grammar and spelling stickler skills on the PDF editing software. | ||
3.) **Photo of the week**: | 3.) **Photo of the week**: | ||
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- | I can be a little too adventurous sometimes. Although the risks are calculated, it can be concerning. I had decided to go from our dormitory to a local store, Home Plus, on my own. I got hopelessly lost trying to get myself there. About 7 miles of walking and 6 hours later, I finally figured out how to get to the store and then home. That accelerated my language learning quite a bit. Of course, this was a choice, because taxis are pretty cheap, and I could have accessed the internet at any time, but still, I know few others that would have gone on the same adventure alone. | + | I can be a little too adventurous sometimes. Although the risks are calculated, it can be concerning. I had decided to go from our dormitory to a local store, Home Plus, on my own. I got hopelessly lost trying to get myself there. About 7 miles (probably much more looking at it on the map) of walking and 6 hours later, I finally figured out how to get to the store and then home. That accelerated my language learning quite a bit. Of course, this was a choice, because taxis are pretty cheap, and I could have accessed the internet at any time, but still, I know few others that would have gone on the same adventure alone. |
5.) **New (Korean) person(s) I met this week**: | 5.) **New (Korean) person(s) I met this week**: | ||
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- | I met my new labmates. We actually went out with a few of them this week to experience a bit of Daejeon nightlife. It was really fun, and I learned a lot from the experience. I think we're all going to get along just fine, as our lab culture, surprisingly, | + | I met my new labmates. We actually went out with a few of them this week to experience a bit of Daejeon nightlife. It was really fun, and I learned a lot from the experience; for example what social pressures exist in a bar atmosphere. I think we're all going to get along just fine, as our lab culture, surprisingly, |
Notes: I should give a few recommendations if you plan to take a visit and don't want to be a complete tourist everywhere you go. So my recommendation this week is to learn to read, write, and pronounce the Korean alphabet, a.k.a. Hangul. This is a very easy system to learn and you can do it in about an hour. Check out a good place to start [[http:// | Notes: I should give a few recommendations if you plan to take a visit and don't want to be a complete tourist everywhere you go. So my recommendation this week is to learn to read, write, and pronounce the Korean alphabet, a.k.a. Hangul. This is a very easy system to learn and you can do it in about an hour. Check out a good place to start [[http:// | ||
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This is tough because of the sheer number of things I've had to learn. For this week, I'll go with the personalist mindset in Korea, with some help from a book I found outside the cafe in W2-1 (a building at KAIST) called __Insight Into Korea__, which I hear is a series. This is indeed something to get used to and you won't realize it until you're here for more than a week because everyone is so nice. There is much more to it than that though. | This is tough because of the sheer number of things I've had to learn. For this week, I'll go with the personalist mindset in Korea, with some help from a book I found outside the cafe in W2-1 (a building at KAIST) called __Insight Into Korea__, which I hear is a series. This is indeed something to get used to and you won't realize it until you're here for more than a week because everyone is so nice. There is much more to it than that though. | ||
- | Within Korea, to break it down quite simply, you ARE your circle of friends, and you're obligated to connect your groups to most of your actions. " | + | Within Korea, to break it down quite simply, you ARE your circle of friends, and you're obligated to connect your groups to most of your actions. " |
This will become normal and I'll bet most Americans coming here will enjoy the change of pace. It makes all your relationships feel more substantial. People really care about their friends and family. Expect to (on occasion) find the opposite with strangers on the bus or subway though. If you're not part of someone' | This will become normal and I'll bet most Americans coming here will enjoy the change of pace. It makes all your relationships feel more substantial. People really care about their friends and family. Expect to (on occasion) find the opposite with strangers on the bus or subway though. If you're not part of someone' | ||
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- | Progress, while not quite up to the pace I'd like, is going quite well. The manual editing for the first revision is finished, we're waiting for feedback, and we're now working with Gazebo, the robotics simulation. The next step seems to be actual operation of the Hubo robot, but for now Keitaro and I are working on getting the Gazebo software to run normally on our laptops. | + | Progress, while not quite up to the pace I'd like, is going quite well. The manual editing for the first revision is finished, we're waiting for feedback, and we're now working with Gazebo, the robotics simulation. |
+ | |||
+ | The next step seems to be actual operation of the Hubo robot, but for now Keitaro and I are working on getting the Gazebo software to run normally on our laptops. It seems like that actually isn't as easy as it seems, because a smooth installation of the software is not nearly what one would hope it would be. Because of this, it seems best not to try on my laptop because it is slow by 2014 standards. | ||
I'm also looking into the gear ratios and harmonic drives on Hubo 2, because I'm betting that eventually I'll have to repair them. | I'm also looking into the gear ratios and harmonic drives on Hubo 2, because I'm betting that eventually I'll have to repair them. | ||
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- | We are being taught PODO (the operating software for DRC-Hubo). Podo means "grape bunch" in Korean; it's an odd word that doesn' | + | Note: I was totally right. The harmonics will definitely not break normally, but they can be accidentally disassembled |
- | I've expanded | + | We are being taught PODO (the operating software for DRC-Hubo). Podo means "grape bunch" in Korean; it's an odd word that doesn' |
- | That has left me with a solid amount of extra time the past few days so I've just been helping with prototype testing and other things like that. There' | + | I've expanded the DRC-Hubo manual after receiving feedback. Meanwhile my laptop lacks the grunt to work with the Gazebo simulator, so I will use a PC in the lab to learn the ropes quicker; though //when// I'll have access to it is a different story; could be tomorrow, could be never. I kinda got a confusing answer. |
+ | |||
+ | That has left me with a little | ||
+ | |||
+ | We use large bars attached to the load cell and use a hydraulic jack to generate specific pressure at a measured distance away from the load cell. As that happens we record the load cell's raw output at that point. At some point that data will be used to calibrate the readout to give units instead of whatever it is giving now. | ||
+ | |||
+ | I imagine this is essentially working like a giant force-torque sensor, like those in the wrists and ankles of DRC-Hubo and Hubo 2. | ||
3.) **Photo of the week**: | 3.) **Photo of the week**: | ||
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This is a photo of the Hanbat (한밭) baseball stadium in the Daejeon Sports Complex. I was at a baseball game between the Hanwha Eagles and the Samsung Lions. The Hanwha Eagles are Daejeon' | This is a photo of the Hanbat (한밭) baseball stadium in the Daejeon Sports Complex. I was at a baseball game between the Hanwha Eagles and the Samsung Lions. The Hanwha Eagles are Daejeon' | ||
- | Trust me on this: Korean baseball games are amazing compared to back home. There are " | + | Trust me on this: Korean baseball games are amazing compared to back home. There are " |
4.) **What I'm learning about myself**: | 4.) **What I'm learning about myself**: | ||
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- | I've learned this week that Korea is a very homogeneous country. Things I've already written show this clearly, but what I'm trying to convey is what you notice once this is recognized. In America, it's different. People from all over the world have immigrated there in large numbers, mixing with all the diverse people already in the states, with different religions, clothing styles, skin color, values, sexual orientation, | + | I've learned this week that Korea is a very homogeneous country. Things I've already written show this clearly, but what I'm trying to convey is what you notice once this is recognized. In America, it's different. People from all over the world have immigrated there in large numbers, mixing with all the diverse people already in the states, with different religions, clothing styles, skin color, values, sexual orientation, |
- | + | ||
- | I have heard complaints though. The primary school system here runs 7 days a week, with studies often lasting from 9am to 9pm, and more or less the learning style fits that of high school in America. By that, I mean how the same format of a problem is shown a few hundred times, and on the test the same format will be tested; I'm aggressively simplifying here, but it explains why the first instinct for our Korean interns last year was to learn new concepts by brute force. In Korea though, with essentially double the time, and an order of magnitude more societal pressure (a topic of its own), that makes Korea the best educated country in the world. With a greater than 99% literacy rate (not to mention that this is in Korean and English), it's very impressive. My friend tells me that this creates | + | |
- | + | ||
- | The mindset more or less extends to other concepts though, | + | |
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- | Well, we're moving onto using sensors through PODO and the implications of combining them with motors. Programming the ALs is completely mystifying me and Keitaro sometimes. Luckily, we have Dr. Lim available to help us get through each time we're stuck. It's frustrating though, because we're not moving nearly fast enough. We're a week behind (well, | + | Well, we're moving onto using sensors through PODO and the implications of combining them with motors. Programming the ALs is completely mystifying me and Keitaro sometimes. Luckily, we have Dr. Lim available to help us get through each time we're stuck. |
+ | |||
+ | It's frustrating though, because we're not moving nearly fast enough. We're a week behind (well, | ||
+ | |||
+ | So what we have been shown is how to work within the ALTutorial, how to access it, and how PODO is set up. Sometimes what seems perfectly logical is the worst way to do things. Sometimes that idea is flipped. I'm just trying to get to the point where I can actually explain things right now. I'd rather be really late than completely clueless. | ||
3.) Photo of the week: | 3.) Photo of the week: | ||
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Above is a picture of the study materials and 팟빙수 (pronounced "pot bing soo" and it is fantastic stuff) I had with my friend Esmerelda, who prefers that her picture not be on the web. We got acquainted at a meetup in Dunsan-dong (둔산동) called Stammtish (I recommend finding it on Facebook). Since then, we've hung out while discussing a TED talk, visiting a salsa dancing class, struggling to get the taxi to the right place, and of course, Korean lessons. | Above is a picture of the study materials and 팟빙수 (pronounced "pot bing soo" and it is fantastic stuff) I had with my friend Esmerelda, who prefers that her picture not be on the web. We got acquainted at a meetup in Dunsan-dong (둔산동) called Stammtish (I recommend finding it on Facebook). Since then, we've hung out while discussing a TED talk, visiting a salsa dancing class, struggling to get the taxi to the right place, and of course, Korean lessons. | ||
- | I enjoy her style of teaching because it is extremely fast-paced, allowing me to hear about important details that many Korean classes won't touch on very early. Basically, it consists of her breaking down all the key words and concepts that I'll need in order to understand this short children' | + | I enjoy her style of teaching because it is extremely fast-paced, allowing me to hear about important details that many Korean classes won't touch on very early. Basically, it consists of her breaking down all the key words and concepts that I'll need in order to understand this short children' |
- | + | ||
- | Original: 하지만 그 소녀를 가장 사랑하는 것은 그녀의 할머니였습니다 | + | |
- | + | ||
- | Most Direct Translation: | + | |
**Notes**: | **Notes**: | ||
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Well, once you get used to living in some place different, it's funny just how much becomes normal to you. Even being introduced to new things becomes normal to you, at least in my experience. | Well, once you get used to living in some place different, it's funny just how much becomes normal to you. Even being introduced to new things becomes normal to you, at least in my experience. | ||
- | In any case, I've learned this week that Korea is incredibly safe. That is to say that violent crime and thievery are so uncommon that the response I got when asking about it was "well it happens more in other cities" | + | In any case, I've learned this week that Korea is incredibly safe. That is to say that violent crime and thievery are so uncommon that the response I got when asking about it was "well it happens more in other cities" |
- | + | ||
- | Furthermore, | + | |
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- | We've moved on to upgrading Jaemi Hubo and will set up our own computers | + | We've moved on to upgrading Jaemi Hubo and will learn to set up computers |
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+ | Soon we'll have new parts for Jaemi and we' | ||
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+ | Our next steps are to finish the "Hello Worlds" | ||
Note: Harmonic drives are frustrating to get back together, so we ought not to take them apart completely. | Note: Harmonic drives are frustrating to get back together, so we ought not to take them apart completely. | ||
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Well this week I'm finding that I often focus only on the objective and lose the wonder. It isn't by dreaming conservatively and realistically that we create the technology of the future, and I think that's incredibly important to remember. My experiences here have reignited that flame to aim high and not give up. | Well this week I'm finding that I often focus only on the objective and lose the wonder. It isn't by dreaming conservatively and realistically that we create the technology of the future, and I think that's incredibly important to remember. My experiences here have reignited that flame to aim high and not give up. | ||
- | Each of the lab members has a different story, but every single one of them has a dream, some are pretty lofty, and they' | + | Each of the lab members has a different story, but every single one of them has a dream, some are pretty lofty, and they' |
5.) **New person/ | 5.) **New person/ | ||
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- | We're in the middle of our "Hubo quick-start" | + | We're in the middle of our "Hubo quick-start" |
- | Getting to test our motions | + | Though a very simple task based on just following directions, that is a bit nice because |
- | Being exposed to a solid application of C++ programming is very exciting for me, as I've used the language in the past, but never had to actually understand what was going on. So this is tons of fun each day. | + | Getting to test our motions on the actual DRC-Hubo robot may not happen as quickly because it is always being used or worked on, but I don't think that will be much of a problem, because we've got to get the simulations to run anyway. With that |
+ | |||
+ | Being exposed to a solid application of C++ programming is very exciting for me, as I've used the language in the past, but never had to actually understand what was going on. So this is tons of fun each day. I've learned how to use so much and I'd say I understand what's going on too. | ||
+ | |||
+ | Pointers used to mystify me, but how exactly everything is working is beginning to make sense. There are some parts of programming that still poses a problem, but it only seems to arise because I lack some computer science experience and can't understand some of the inner workings of PODO. For example, timing, and how exactly the speed of the loops are regulated. You would think that would be easy. It sounds like a lot of simple division and iterations. It isn't. Xenomai is part of what makes the whole thing work and that I definitely don't understand. | ||
+ | |||
+ | I think that just points out the value of specialization. The people working on Xenomai aren't doing robotics (I think), but they sure support a lot of it. With that said, I may not be at a high level of proficiency on this topic, but I'm learning how to learn. So is Keitaro. I'd say that's far more useful. | ||
3.) **Photo of the week**: | 3.) **Photo of the week**: | ||
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- | Well, this is the water festival in Jangheung a.k.a. The Jangheung Aqua Festival. I hear there was also a water festival held in Seoul, but if that was any more fun than this one I would probably have died. | + | Well, this is the water festival in Jangheung a.k.a. The Jangheung Aqua Festival. I hear there was also a water festival held in Seoul, but if that was any more fun than this one I would probably have died. I say that coming from living in Las Vegas. I didn't think 24 hours could ever hold so much excitement for me. |
4.) **What I'm learning about myself**: | 4.) **What I'm learning about myself**: | ||
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- | This is a photo from O-World in Daejeon (an hour bus ride from KAIST). Trust me, you can absolutely work over the weekend and still have fun at night. | + | This is a photo from O-World in Daejeon (an hour bus ride from KAIST). Trust me, you can absolutely work over the weekend and still have fun Saturday |
O-World is part zoo, part " | O-World is part zoo, part " | ||
+ | |||
+ | On that note, if you want to don't ever want to leave Daejeon, that is totally fine. There' | ||
4.) **What I'm learning about myself**: | 4.) **What I'm learning about myself**: | ||
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- | I really am starting to find that point where I can just get completely absorbed by and flow through whatever work I need to do. That feeling is best described as the " | + | I really am starting to find that point where I can just get completely absorbed by and flow through whatever work I need to do. That feeling is best described as the " |
- | For me it has always been brute force to stay focused and work on just one thing, unless it was extremely interesting. However, I think I'm getting to a point where it's no longer me just staring at something until my mind is forced to find meaning in it. While here, I've figured out a lot about what I want, why I do my work, and what makes me happy. While pursuing those things, work is becoming more fluid, and more streamlined. I think I've finally found a hum of my own, and I think that leads to the best and most efficient kind of work. | + | For me it has always been brute force to stay focused and work on just one thing, unless it was extremely interesting |
5.) **New Korean person(s) I met this week**: | 5.) **New Korean person(s) I met this week**: | ||
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I learned that there are expected trends in populations growth that are affecting government policy now. The birth rate is quite low when considering trends in life expectancy and the percentage of elderly people expected in the future population. Something around 40% of the population in 2060 is predicted to be aged 65 or older. | I learned that there are expected trends in populations growth that are affecting government policy now. The birth rate is quite low when considering trends in life expectancy and the percentage of elderly people expected in the future population. Something around 40% of the population in 2060 is predicted to be aged 65 or older. | ||
- | Numbers aside, the government has taken notice and I was told that the push to bring foreign workers and scholars into South Korea is actually part of the response to the predicted trends. Elementary schools at the moment are dealing with 30 children or more per classroom in the city, but in more affected (generally rural) areas the schools are holding 100 children total. Sometimes it's much less than that, as ridiculously low as 10. The birth rate has dropped so severely that some expatriates I've met that teach English to children are considering what they will do in coming years when their class sizes suddenly drop. | + | Numbers aside, the government has taken notice and I was told that the push to bring foreign workers and scholars into South Korea is actually part of the response to the predicted trends. Elementary schools at the moment are dealing with 30 children or more per classroom in the city, but in more affected (generally rural) areas the schools are holding 100 children total. Sometimes it's much less than that, as ridiculously low as 10. The birth rate has dropped so severely that some expatriates I've met that teach English to children are considering what they will do in coming years when their class sizes suddenly drop and people are fired. |
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Jaemi' | Jaemi' | ||
+ | |||
+ | Sure Korea is fun, but I'm really going to miss this lab. There' | ||
3.) **Photo of the week**: | 3.) **Photo of the week**: | ||
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This is a (terrible) photo of a spider at the Hwaam dormitories. There is nothing special about this spider, except that it's about the size of my thumb. I'm not too keen on spiders to be honest. I really dislike them, but unfortunately for me, in Korea, they' | This is a (terrible) photo of a spider at the Hwaam dormitories. There is nothing special about this spider, except that it's about the size of my thumb. I'm not too keen on spiders to be honest. I really dislike them, but unfortunately for me, in Korea, they' | ||
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I learned just how uncultured I am, or rather, how cultured I might be becoming. | I learned just how uncultured I am, or rather, how cultured I might be becoming. | ||
- | So, I was watching a movie with a Korean | + | So, I was watching a movie with a Korean, and it just so happened to be in English. That means the subtitles were in Korean. In the movie was a scene where all of the characters begin speaking in Chinese, but the subtitles were still in Korean. So I naturally began reading the subtitles, not with perfect comprehension, |
- | It occurred to me that another language had so much more to offer than being able to speak to people that don't speak English. Just being here means now I use Naver, google.kr, other shopping websites in Korean, and even understand a slightly different way of counting. There are words in Korean that don't exist, at all, in English and vice-versa. A lot of these words describe emotions and even actions, which basically means that a second language sharpens your ability to think differently, | + | 5.) **New Korean person |
- | That's just the language part; I won't even get started | + | I met my friend Sohee. She is a mechanical engineering major at a neighboring school in Daejeon. It' |
+ | |||
+ | ---- | ||
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+ | ====End of Week 9: Saturday 08/ | ||
+ | |||
+ | 1.) **What I learned about Korea**: | ||
+ | |||
+ | I learned about schools in Korea. Korea is accepted in many lists as having the best education system in the world. I know quite a few teachers, so I can see how. However, among Korean friends | ||
+ | |||
+ | The largest example of this is English speaking ability. Since getting into a good university requires good test scores on English tests, like TOEFL or TOEIC, at KAIST everyone has a decent score on these tests. Many Korean people have told me that they' | ||
+ | |||
+ | Even so, I find the schools really impressive, as Las Vegas sometimes ranks near the bottom of primary school district comparisons in the United States. | ||
+ | |||
+ | |||
+ | 2.) **Project status**: | ||
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+ | |||
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+ | I'm also really sad to be going...BUT I'm mostly worried because I am holding up Keitaro and I. This last tutorial I was told by my labmates is improbable to get finished, but possible (yay hope!). Gazebo should be integrated with ROS and I simply show how to begin doing our own things, i.e. not just launching SLAM in the simulator; which should also be simple. | ||
+ | |||
+ | Dr. Lim seems to know how to work on the issue, but when it comes to testing, everyone else just uses the actual robot since it's easier. Now while I find that absolutely hilarious, it might be just a little useful to be able to simulate new actions, or rather, just my goal which is waving hands. | ||
+ | |||
+ | Installation is simple enough; follow instructions. Running is not quite the same. Sometimes Gazebo runs. Other times it doesn' | ||
+ | |||
+ | I suppose this is a nice solid lesson in why beginning a project AS SOON AS the prerequisites are done is important. If I had followed Dr. Lim's ROS and Gazebo tutorial once I figured out how to create the hand waving command in PODO, by now I'd at least be sorting out bugs instead of worrying over reinstalling things correctly to get something to run. | ||
+ | |||
+ | For now though I'd best get ready to fly back. Missing a flight because you slept at the lab and didn't pack can't go over well... | ||
+ | |||
+ | **NOTE:** Do **NOT** switch out SSDs from the Intel NUC in order to make hard backups for the computer. If you're very lucky you can do that, but for me it didn't work. After 2 days of setting things up to work just right on the backups, so we had some for the lab back home, I found out that method won't work. It won't boot the disk after the swap. So all work on them is now gone. Just insert an SSD, do a fresh install of your operating system and other software, and work with that; don't swap. | ||
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+ | |||
+ | 3.) **Photo of the week**: | ||
+ | |||
+ | This photo is part of KAIST Munji campus. I was supposed to be headed to my own farewell party, but unfortunately it was a Saturday, and I forgot the shuttle from my dormitory hardly operates on the weekends. So I was stranded, but eventually found my way. | ||
+ | |||
+ | What is cool about Munji campus is that it has its own unique things about it that I don't think I would have found if I never got stuck there for a few minutes. In just that 10 minutes, I found a greenhouse, research wing, a KAIST logo-ed car, and upon leaving bumped into the Samsung Heavy Industries complex. | ||
+ | |||
+ | 4.) **What I'm learning about myself**: | ||
+ | |||
+ | I think positivity has really accelerated my ability to move forward on tasks regardless of how confused I am, and it's probably good to see and know that as opposed to just blindly saying yes to things. So when things get a bit concerning and I begin to freak out, it is valuable to see the bright side. | ||
+ | |||
+ | Aside from that, after a while, you notice keeping a good attitude can begin to affect others as well. At first, I could see frustration in the faces of my teachers upon asking for help with things that were ultimately very simple, but after a while I think that finding reasons to keep a smile on really changes the outlook from a waste of time to an investment to save time later. | ||
5.) **New Korean person I met this week**: | 5.) **New Korean person I met this week**: | ||
- | I met my friend Sohee. She is a mechanical engineering major at a neighboring school | + | I had the opportunity to meet Tae Hyung (Terry) Choi, the CEO and president of Seoyoung Engineering. We had a great discussion of the future of robotics/ |
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