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2017-07 24

[Student]First Try, Best Result!

To foster future leaders of unfolding automobiles market and self-driving cars, Hanyang University (HYU) hosted its 15th Smart Model Car Competition at the Olympic Gymnasium on the 14th of July. Applause of encouragement and cheers were heard here and there with shout outs of supports being made each time a team took their turn to run their cars. Of the 20 teams that made it to the final, team Future Automotive Engineering (FAE) won the first place. All five members of the team are students of the Department of Automotive Engineering: Park Sung-woo (4th year), Shin Hyun-ki (4th year), Park Soo-hyun (4th year), Byun Hyo-seok (2nd year), and Byeon Moo-kyung (4th year). Participants were required to develop an embedded control system (a smart computer system enabling machines to operate on their own) and run their cars on the track, which was readily set in the Olympic Gymnasium, waiting for the entrants to come. Each team was to bring their cars to the start line and present its ability when called upon. The missions were as follows: cars must drive in the middle of the lane, must avoid obstacles, must speed down in the school zone and go back to the original speed after leaving the zone, should be able to go over the hill, and must make curves without departing the lane. Now, ready, set, go! The finished work of team FAE, the only one to complete the whole track. (Photo courtesy of FAE) Prize of 10,000,000 given to team FAE! Unforeseen and unforgettable “None of us expected to win the competition. Since all five of us has no experience of participating in a contest like this, we thought we would barely make it to the final,” began Byun. About 100 teams were present for the preliminary round, after which 20 teams were selected for the final. Much to their surprise, when team FAE passed the preliminary round ranking the 4th place, their goal changed to complete the track and make it to the finish line in the final. What was surprising was not only the fact that they have won the competition but also that they were the only team who made it to the finish line. “We were happy with the result, of course, but at the same time, we were quite shook from such unexpected outcome. We didn’t expect to be the only team to complete the track,” remarked Byun. The most essential requisite for the car was to keep itself in the middle of the lane, not crossing over to the other or departing it. When the car was free to drive, it had to maintain its speed and make curves as the track demanded. Then at some point, school zone was marked by thick, black lines in which the car had to slow down and avoid the obstacles. Marking the end of the school zone with another set of thick black lines, the car was to go back to its original speed and finish the track, passing a hill and stopping at the finish line without bumping into the blockage. FAE’s car has successfully fulfilled all these requirements and confidently marched to the end. Sung-woo, who was the team leader, was looking for fellow students who would join his team. The members came together as one team through acquaintance, since they took the same course. The team first gathered around April, in the middle of the semester, and met up from time to time to work on their automobile. It was after the semester was over that they deeply got down to their business and invested more time on constructing the car. They even got access to the 3D printer thanks to professor Yoon Soo-kyung and tested their designs, by mapping out where each part should lie. Nonetheless, they received no particular help from any of their professors to be fair. “This course named 'Microprocessor' we took was quite helpful in a way that it taught us about the parts we used for this competition.” Byeon Moo-kyung (left), Byeon Hyo-seok (middle), Park Soo-hyun (right) Fix it till you make it “Finding the right angle of the camera, which will be the eye of the car, was one of the most difficult tasks,” recalled Park. It was crucial to adjust the camera at the perfect angle because the car has to sense and move according to what it observes. If it is too short-sighted, the car will fail to perceive the other lane and if it is too far-sighted, the car will easily depart the lane. “We had to remove and adjust the camera countless times to find the perfect spot. Everything will go into nothing if the camera fails to observe the area correctly in the first place,” explained Byeon. In addition, more than ten parts had to be replaced because they were burned during the process. If one part goes wrong, the whole thing fails to function. Therefore, it was crucial that each part maintained its good condition. Overall, the process was not so smooth, as the members struggled to “Our team name was uninteresting, our car wasn’t that flashy, and we even had to fix it until the last minute. However, our car presented the best performance and eventually became the only car that finished the whole track. This was unexpected, but we’re very happy with how it all turned out,” said the members unanimously. "Small changes and corrections lead to a big difference!" Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Choi Min-ju

2017-07 10

[Student]Thinking Outside the Circle

Creative ideas can originate from literally everything, depending on the creator’s attitude. When making an advertisement, inspiration can come from other advertisements, one’s experience or thoughts, or other people. For Kim Dong-hoon (Department of Educational Technology, 4th year), the winner of New York Festivals 2017, however, it comes from his dissatisfaction about the society. New York Festivals is one of the most well-known international award competitions for the world’s best works. Winning two Third Prizes in the New York Festivals 2017, Kim has taken a step closer to his dream. Different perspective, different approach Kim’s works by the name of ‘Cover by Artist’ and ‘Missing Models’ each received a Third Prize in the competition. ‘Cover by Artist’ is an advertisement idea proposed to the most popular digital music service in the United States Spotify, which puts the stage performance video of an artist on the space on the screen where there originally lies the cover album of the music to further promote the artist’s work. “If you use a music streaming service, the cover album takes up most of the space of your screen. I personally enjoy listening to live concert music and I suddenly thought if I could turn the idle space into a room for performance videos, this could be a means of advertising while making the service more enjoyable.” Spotify - Cover By Artists from Donghoon Lee on Vimeo. His other work ‘Missing Models’ is an idea derived from the hopes of helping to find missing children. In a poster, there are hundreds of faces of missing children clustered together. That makes it hard for people to take a close look at each one, which got Kim thinking. Kim thought about instances where people take a close look at the figure and came up with home shopping. He applied the concept to WooCommerce, a customizable e-commerce platform for building online business and inserted the missing children’s face as the models’ face in the home shopping sites. In this way, the faces of the children could be better recognized. Woocommerce - Missing Models from Donghoon Lee on Vimeo. Spotify, Woocommerce, missing children, and home shopping are all something that everyone is familiar with. Yet, no one has ever came up with these ideas so far. Kim’s way of thinking and approaching certain situations led him to devise such ideas. “I take a lot of notes in my daily life. It could be under any circumstances, really. Those little notes help me to create helpful ideas later on.” From problem to idea “When I look at advertisements, there are a lot of things that I don’t like about. In general, I see a lot of factors in this society that could be improved. What I do in that situation is that I take note of them and try to solve them in my own way, through making creative advertisements.” This is how his two award winning advertisement ideas came into being. Kim sees every problem as a potential idea for his work and use them as a source of ideas. “I don’t have a particular source of inspiration every time I make an advertisement. My daily life and every aspect of it could be my inspiration that gives me ideas.” Kim wants to make advertisements that could help solve social problems. Kim first got interested in making advertisements after watching one in one of his classes. “It was a chocolate advertisement and it was the first time in my life that I felt like I wanted chocolate just by watching an advertisement. I was amazed by how a short advertisement could convince people to change their minds.” As an Educational Technology major, Kim knows how to think from a learner’s perspective. This helped him to consider what the audience would want from an advertisement, enabling him to produce a more effective result. After making ads, being aware that random moments could inspire him, Kim became more attentive to little details of his life. "My next goal is to win next year's Cannes Lions, which is another prestigious international competition." Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Kim Youn-soo

2017-07 09

[Academics]Speech Privacy in High-Speed Train Cabins

Professor Jeon Jin-yong of the Department of Architectural Engineering is an expert in the field of architectural acoustics. His paper, “Control of interior surface materials for speech privacy in high-speed train cabins,” discusses a novel method of using the sound masking technique along with the interior sound dynamics inside the train itself. At times, Speech Transmission Index (STI) is required in Europe and North America for announcements made in trains. During the period of 2012-15, with the support of Korea Agency for Infrastructure Technology Advancement (KAIA), Jeon had the opportunity to create architectural sound design for trains. Jeon is explaining about the importance of speech privacy. Jeon has experienced a serious problem about five years ago while riding a KTX train and had a chance to hear the ladies talking at the back about seven rows away from him. All the speeches being made by the ladies were being bounced on the shelves of the KTX and reached the other passengers which meant that everyone was listening to their conversation. After the experience, Jeon has decided to set up a new guideline on high speed trains for speech privacy between people. There are also surveys that point out that the most annoying noise on KTX users being the conversation between people by 31.8%. It is suggested by Jeon that the back of the chairs should be high and there should be the minimum space between the chairs in order to block out the conversation from being overheard. Since sound travels through the air and bounces from walls to ceilings, less space being provided for it to move around freely is a way to retain speech privacy. In addition, the material for chairs, ceilings, and side walls being high sound absorption material is suggested to reduce the interior noise. There is yet to be studies made on its fire resistance performance evaluation, weight lightening, and maintenance. Using sound tracking devices, Jeon was able to redesign the interior of the KTX. (Photo courtesy of Jeon) Sound masking has been one of the solutions as to provide speech privacy. It is the beating, squeaking and rattling noises that are created outside the train being intentionally flow into the train to cover up the conversation between people at about 50 to 60 dB. Speed trains with no interior noise has the features that allows the sound of human voice to travel through the space such as low ceiling, long space, and narrow walls. However, sound masking does not suggest interior noise to be too high since it would make the passengers dissatisfied. It means that there has to be enough interior noise in order to secure the speech privacy. Through Jeon’s studies made with computer programs and 1:10 scale sized KTX models, it is now suggested that high speed trains being produced nowadays provide enough speech privacy. After having contributed to the society through his novel findings, Jeon wishes to continue with the studies even further to solve the problem of noise complaint issues between neighbors through deep learning programs. Jeon wishes to contribute to the society through his sound interior designs. Kim Seung-jun nzdave94@hanyang.ac.kr Photos by Kim Youn-soo

2017-07 04

[Academics][Researcher of the Month] Ground Breaking Advancement in Medical Magnetic Robot

The era of robots wandering inside a human body for medical treatments is about to face our generation. Though the research is still in the process of developing magnetic fields and improving robots, the actual application of the medical robots is expected to occur in a decade. In his research “Magnetic Navigation System Utilizing Resonant Effect to Enhance Magnetic Field Applied to Magnetic Robots,” professor Jang Gun-hee of the Department of Mechanical Engineering proposes the improvement of the magnetic navigation system (MNS) via RLC (stands for resistor, inductor, and capacitor) circuit in the hope of its medical application. Generation of strong magnetic fields in high frequency When doctors treat for blood vessels related illness like coronary artery diseases or have to execute endoscopic surgeries, they often use catheters (thin tube made from medical grade materials) controlled by their hands and medical, empirical sensations. However, these catheters don’t have the sufficient controllability for the physicians due to their long, flexible wires. “The main point of this research was to minimize the surgical errors that these catheters may incur. So, we decided to make magnetic robots that are microscopic enough to wander inside our vessels,” said Jang. The types of robots currently in technical development are various- fish type robots, wobby-like robots, swimming robots, helical robots, and more. However, the magnetic robots especially intrigue the academia. “Compressed springs inside the robot will spread out, enhancing its drilling capability inside the vessels, which its movements will be guided by the magnetic system. Improvements in this MNS are significantly vital, as every mechanical motion of the magnetic robots is proportional to the external magnetic field,” emphasized Jang. Jang has been working on the magnetic navigation system research for about 12 years, which currently resulted in the torque magnetic field on the right. Through the experiments to unclog the blocked area of tubular environments, Jang and his students researched on a novel MNS with the resonant effect of the RLC circuit. “Simply saying, these robots with the MNS have magnets. When the north pole of the magnet approaches another north pole, it will push, and vice versa in the case of the south pole. This is the simplistic picture of how the magnetic robots and the MNS are working,” said Jang. Advancement to this fundamental phenomenon, Jang refers to the "closed right hand rule" (Ampere Law that relates the net magnetic field along a closed loop to the electric current passing through the loop) to explain his research. “In our newly developed MNS, inside the diameter of 50 centimeters wide spherical environment, we can create and control strong magnetic field in any direction which eventually generates useful various mechanical motions of the magnetic robots,” highlighted Jang. Another unconventional discovery of Jang’s research is the application of resonant frequency in the RLC circuit to amplify the magnetic field of the robot. RLC stands for resistance, inductance, and capacitance which all are in the influential relationships in science. When the alternating voltage is increased, the resistance should be divided to flow the current. However, as the alternating frequency of voltage increases, the current decreases due to the inductance of the coil. “We eliminate the effect of inductance with the application of varying capacitance that leads to maximizing the current and the magnetic field in high frequency,” explained Jang. This phenomenon was able to generate fast drilling motion of the magnetic robot to unclog the blocked area of blood vessels. Furthermore, application of the MNS developed a crawling robot that can also deliver drugs into a human body, which Hanyang University gained its international patent of. (Video courtesy of Jang) Hopes for the scientific improvement It has been a decade since Jang has been working on this magnetic robot research. The beginning of all dates back to when his mother was hospitalized due to her coronary artery disease in the heart. “The doctor told me that the illness is genetic and I may also be in danger. So, I thought that rather than believing in the doctor’s hand and the catheter, I should believe in science to develop this surgical methodology and first test on me,” said Jang. During the several years that Jang has been working with his students, he also began to long for fostering his students and their success. “I was always interested in the concept of a motor since I was young. This academic desire eventually led me to become a scholar, but since I became a professor of many students and a father of two daughters, I began to be intrigued to their life-long academic achievements,” reminisced Jang. Ph.D students of the Department of Mechanical Engineering- Lee Won-seo (left) and Nam Jae-kwang (right), also participated in the research with their professor Jang. It is estimated that after more technical amendments of this mechanical robot, it will be capable of testing on animals, and then applied to human surgeries, which will take about a decade. During this journey to scientific achievements, Jang realized that efforts are what science really value. “Just like my students who endeavored all their desires to science to leap higher, I hope that the South Korean scientific academia will also hope for the brighter future,” reminded Jang. Kim Ju-hyun kimster9421@hanyang.ac.kr Photos by Kim Youn-soo

2017-07 03

[Alumni]A Shining Star in Operas and Musicals

A Verdi opera ‘Rigoletto’ came to an end on the 30th of June with loud applause from the audience. A renowned vocalist, Kim Soon-yeong (Department of Vocal Music, ’06), famous for both musicals and operas, caught the attention through the character named ‘Gilda’. She acted out the pure and innocent girl through her voice, leading the opera to a great hit. A soprano, stepping into a musical Opera vocal performers would frequently think that they would not be able to perform again in operas once they expand thier activities to musicals. However, Kim completely broke the stereotype through the character ‘Christine’ in the musical ‘Phantom’, which was premiered in 2015. She was casted by EMK music company through the music video ‘First Love’, composed by Kim Hyo-geun (Click to listen). “A lot of acquaintances tried to persuade me not to do it since they thought I wouldn’t be able to perform again in operas. But I didn’t want to miss an opportunity of new experiences," said Kim. Kim explaining her opportunity of starting musicals Of course, Kim was not a perfect actress from the beginning. She faced extreme hardships as she had to step into an entirely different area. The tempo of the musical was much faster than that of operas along with the increased number of acting scenes. “I wasn’t able to keep up with the other actors at first. The choir even ridiculed me during the practices. However, as I got better through persistent practice, the pure, passionate character of Christine became soundly mine and I gained more confidence.” Kim reminisced. She also mentioned that she was able to understand the character more deeply because of the fact that Christine came from the countryside, just like Kim who moved from Daejeon to Seoul to achieve her dream. As a result, Kim attained absolute success and became the only actress who took the role of Christine again in the second presentation of ‘Phantom’ this year. She remarked that she was able to act in a much more relaxed manner throughout the second presentation as she was extremely tensed up in the first one. Kim praised the features of musicals through her own experience. “I was never bored of acting even though I played the role of Christine numerous times. It felt new everytime with different actors of ‘Phantom’. They allowed me to feel different emotions each time I act on stage.” Kim performed as Christine 98 times in total, but she is confident that she enjoyed each and every performance. A scene of the musical 'Phantom'. The phantom of the opera 'Eric' is teaching songs to 'Christine' in the picture. (Photo courtesy of Kim) Kim’s significance of operas and musicals “I would never be able to choose between operas and musicals. They both have their own charming points.” said Kim. Formally, even when both performances practice for the same amount of time, operas usually have only 2 or 3 plays while musicals have much more plays; 50 for each presentation in the case of ‘Phantom’. Therefore, Kim pointed out that she can fully absorb the character of musicals throughout the acts but only feels like rehearsals with operas. Kim also pointed out the different focuses of each plays. Operas focus more deeply into music, while musicals put their priorities on acting. Therefore, Kim puts every ounce of her energy into her songs in operas. She explained that she can reach a state of catharsis through the concentration of her voice in the music. On the other hand, as musicals focus more in actions, Kim felt that they tend to be more energetic, diverse and colorful. Kim praised both areas for their own unique traits. "No one told me to sing. I just loved singing so much I searched for chances to sing." Kim anticipated that she would continue performing in both areas of operas and musicals. Her aspiration is later to be referred an all-rounder. “I’m not the best in any area. However, I think that’s the very reason I was able to try both of them, and make satisfying results.” Kim wished that she could inspire more of her junior colleagues to broaden their views and to challenge themselves in various areas. “Performances nowadays show a collaboration of various areas. Fitting to the trend, I wish opera vocal performers can also show active performances in areas other than just from their own.” Kim concluded. On Jung-yun jessica0818@hanyang.ac.kr Photos by Moon Ha-na

2017-07 03

[Special]From Fashionable to Affordable

Ubiquitous, affordable, and trendy are the most suitable terms to describe Korean beauty shops and their products. It is no secret that Korea is outrunning its competitors in the global beauty market, with both its domestic and global popularity skyrocketing as new products are introduced by various brands. The so-called “road-shops” in Korea (because they are on roads) are easily found in the country. From numerous brands, road-shops are stocked with beauty items that are reasonably priced. From being accessible to affordable, K-beauty brands are seeing continuous growth in their sales in the global market. Brands and trends Famous Korean mid-range beauty brands. (Photo courtesy of wevio.com) Etude House, Tonymoly, Innisfree, Missha, The Face Shop, Nature Republic, Skin Food, and Holika Holika are all famous and popular cosmetic brands in Korea. Each brand boasts its own series of beauty products, loved not just for the products themselves but because of their eye-catching, likeable packaging. Korean beauty brands have also gained recognition for their innovative formulas, ingredients, and manufacturing processes. On top of all these, the sophisticated and demanding customers in the local Korean market have also been one of the major drivers. The facets aforementioned push K-beauty brands way ahead of the game, differentiating them from other international beauty brands and even in the highly competitive beauty market. The short product development cycle compared with the international players helps Korean beauty brands respond more quickly to evolving customer demands and trends. Innovation in product development is driven in part by the heavy investment in research and development. Mid-range beauty brands also has an impact on its domestic aspect. Since it is very accessible and affordable, young students, ranging from elementary to high school students can also be the tarketed customers. This has lowered an entry barrier to cosmetics, teenagers showing scorching interest in makeup products and makeup trend. The outcome was the so-called “student makeup” which is basically makeup style worn by teenage students. Examples of unique packaging of K-beauty products. (Photo courtesy of pinterest.com) Shop to shop, country to country Even though there are an increasing number of Korean beauty brand shops abroad, an influx of tourists is visiting Korea with the main interest of shopping for beauty products. Myeongdong and Ewha Woman’s University shopping street are the two most famous places to shop for cosmetic products, since virtually all brands of beauty stores are lining up in the street. Makeup lovers from various countries fly over to Korea and satisfy their beauty appetite with mid-range beauty products. Beauty brands in a row in Myeongdong (Photo courtesy of trend-traveller.com) Road-shops in a line in Ewha Woman's University street (Photo courtesy of pinterest.com) Floating on the wave of K-beauty, the mid-range beauty brands are emerging as a rising star in the world’s beauty market and finding overseas niche to meet the foreign demands as well. Just as K-pop and Hallyu is giveing quite of a cultural influence in the global stage, Korean beauty brands and the K-beauty trend is becoming increasingly popular and is being spotlighted in the makeup empire. Makeup trends of Korea, partly established by K-pop celebrities, idols’ fashion, and partly formed by beauty brands, are gaining popularity as Korean culture is further promoted overseas. Travellers from overseas purchasing dozens of K-beauty products (Photo courtesy of LookMazing) Jeon Chae-yun chaeyun111@hanyang.ac.kr

2017-07 01

[Student]Winners of 2017 Robofest Vision Centric Challenge

Robofest is a renowned robot competition that has started from 2000. Hosted by Lawrence Technological University in the United States, over 20,000 people have competed from 14 different countries in the last 17 years. Bae Jong-hak and Yoo Ho-yeon (Robot Engineering, 3rd year) have worked together as a team in 2017 Robofest that was held from June 1st to 3rd in Florida, and won the Vision Centric Challenge. Back to back winners Team Linker, consisted of Bae and Yoo have won the 2016 Robofest last year as well. It is the same competition with different rules. “They host the competition in the U.S. in June, while in Korea, it is held in October,” explained Bae. This time, Bae had the full support from the Department of Robot Engineering. “Our department has generously provided us with the opportunity to travel to the U.S. for free and also helped us out with the materials needed to create the robots as well. Special thanks to professor Han Jae-kwon for helping us out with the robots,” added Bae. Yoo (with the robot), Han (middle), and Bae (with the trophy) are smiling in front of the camera. Team Linker has received such a good feedback thanks to the internal software of their robot. The objective of the competition was the robot to perceive the numbers and equations through the camera and eventually reach a certain result out of it. “We put a lot of effort on the software so that when the robot gets stuck with the equations, it could move back a little instead of standing there still,” said Bae. He explained that Team Linker has prepared for the competition for 3 months and it took about one month to create the robot. “ Software of the robot took longer for us because it was more important than the hardware.” "It has been a privilege for us to participate in the competition." I – Robot After studying one more year to retake the college entrance examination, Bae found his interests in creating robots. “One of my childhood dream was to create a robot on my own,” recalled Bae. He explained that Department of Robot Engineering would be a perfect fit for those not interested in particular field of study. Since robotics requires knowledge from diverse fields, students are able to acquire engineering skills that could be applied in any type of studies. “We learn about diverse types of integrated studies and then move on focus on a certain field that catches your attention. For me, it was image recognition. I gained more interest after studying it during the competition,” said Bae. Bae wishes to create robots similar to Jarvis. In the future, Bae wishes to study more about the robots and image recognition in graduate school. “I see a lot of possibilities from the robots in that we could have a better future with them,” commented Bae. He wishes to create a home robot that would be able to handle useful tasks like Jarvis from Iron man. Bright future seems to lie in front of the winners of Robofest Vision Centric Challenge. Kim Seung-jun nzdave94@hanyang.ac.kr Photos by Kim Youn-soo

2017-05 30

[Academics][Researcher of the Month] Fusion Research in Enlightenment

Professor Choi Dong-ho of the Department of Medicine is June’s Researcher of the Month for his active role in developing knowledge in the field of medicine. In his paper, “Design and Fabrication of a Thin-Walled Free-Form Scaffold on the Basis of Medical Image Data and a 3D Printed Template: Its Potential Use in Bile Duct Regeneration”, Choi explains how he has created the bile duct, a body part that exports bile from liver to duodenum with 3D printer and being able to successfully conduct clinical demonstration on rabbits. Professor Choi explains about the 3D printing and its relation to artificial organs. For 20 years, Choi has been working on stem cell research which has eventually led to the stage of creating artificial organs with 3D printing techniques. Bile duct is one of the very sensitive body parts where it is hard to fix once problem occurs. Although there are artificial blood vessels, there has been no artificial bile ducts created. What makes it so complicated to make is that since bile is carried through the bile duct, it shrinks as time goes on if created with the material as commonly used as Gore-Tex. The material should be sturdy enough to withstand the bile, and it should be flexible enough to be sewed up as well which is definitely not an easy task. Process of creating bile duct through 3D printing (Photo courtesy of Choi) The diagram above depicts the process of creating bile duct. It first goes through the data acquisition through MRI images and 3D designing. As some cells are mixed up to the mold, it grows into the shape and size as designed. Important technique here is to develop the bio ink that congeals once it flows out of the 3D printing machine. Creating hydrogel and mixing up the stem cells to it is another important task to be completed. "I hope that what I create can be of help to people." Choi’s team is currently in the stage of obtaining patent in the techniques to create artificial organs through 3D printing. Since there are tremendous types of researches to be carried out through his studies, ranging from stem cell reprogramming to drug screening, Choi wishes that creating safe artificial organs in the end is what he wishes to achieve. “I am still doing translational research with various other departments and I hope that what I create can be of help to not only the patients, but even for my family as well in times of emergency,” concluded Choi. Kim Seung-jun nzdave94@hanyang.ac.kr Photos by Moon Hana

2017-05 29

[Event][Hanyang Festival 2017] Eat, Drink, and Enjoy!

The once desiccating sun is setting and cool evening breeze is blowing. Smells of barbeque is flowing and lights of booths are turning. People are busying themselves here and there in preparation for the outdoor pubs and game activities. With games and activities during the day and pubs and performances during the night, the festival seems exciting and lively. Daytime Animation During the day, games and amusement activities were set up in every corner of Hanmadang (Han Yard). By the name of High Five with the Booths, the planning committee this year has prepared five booths of funs and activities: escape-the-room game, hair chalk booth, Hanyang Land, eat-alone-competition, and Alohanyang. Among the five, the most popular booth seemed to be the escape-the-room game, as far more than expected students visited the booth and protracted the activity for a day longer. Hair chalk booth was big hit, too, as many people were interested in coloring their hair free from damage and permanency. In Hanyang Land, there were a mini Viking ride, punch-machine, and bubble wrestling. Mission: escape the room by solving the puzzles with given clues in the room! Question: who is the murderer? Screams of students echoed the nearby area of the viking ride. Males and females, both were dying their hair with chalk of their favorite colors. Bubble wrestling! Don't tumble down before your enemy! Students from Alohanyang campaigning for fine language throughout the festival. Other booths set up by various clubs also offered games and activities along the track. Table tennis, archery, face painting, and baseball were situated in corners of the pathway. Intense exchanges of the ball went on at the table tennis booth. The master of archery teaching a participating student how to aim the bull’s eye. Friends drawing on each other’s face at the face painting booth. Baseball booth enjoyed batting and pitching. Random survey: vote with your trash, which one do you prefer? Nighttime Festivity During the night, outdoor pubs and kiosks of barbeque and cocktail were attracting lines and lines of students. The smell of barbeque sticks and the music of outdoor pubs seemed spirited and youthful, as everyone was eating, drinking, talking, singing, and socializing as a big group. Going a little uphill toward the outdoor theater, swarm of people were gathered around the stage, as they longed to see a famous idol group Girlfriend. Cheers and shouts for their desired celebrity was well heard across the area and the performance even invigorated the crowd louder and stronger. Grilled chicken stick is being ready to be served. "If you win me with rock-sissor-paper, I will give you a glow-in-the-dark bracelet for free!" The outdoor pub is bustling with students hanging out with their friends. A cocktail kiosk selling various kinds of drinks. Students in charge of preparing food at the outdoor pub is busy with their duties. Girls group Girlfriend on the stage of the outdoor theater. Everyone is eager to see the celebrity closer, busy taking pictures and filming the performance. The end of the performance! Everyone have a safe and enjoyable night! Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Choi Min-ju

2017-05 02 Important News

[Academics][Researcher of the Month] Simulation of Human Movements

Professor Kwon Tae-soo. Human movements are much more intricate and complicated than it seems. Many attempts were done to portray moving human actions by computer program and animation. Those attempts were partly successful until now, yet with certain limitations. Professor Kwon Tae-soo of the Department of Computer Science & Engineering is greatly interested in simulating human motion. In his recent paper, “Momentum-Mapped Inverted Pendulum Models for Controlling Dynamic Human Motions”, he explains about how physics can be applied into animating human movement and be used in its development. Simulating human animation is a complicated business. Most of the animation we see in games and movies is based on a technical method called motion capture. Motion capture is a method of simulating motions by attaching sensors to a moving object and tracking the information of the movements, then analyzing its numerical data. However, movements of these animations have certain limits because of its foundation which merely consists of pre-captured motions. Therefore, in order to exceed this disadvantage, quite a few research was done utilizing physics into developing animation using Inverted Pendulum Model, or IPM, which analyzes human motions through controlling robots by computerized robot simulator program. Although IPM became a potentially alternative method of producing simulation of motions, it had a problem of producing unnatural movements of characters. Kwon, who was aware with this limitation of IPM, developed a new form of IPM called Momentum-Mapped Inverted Pendulum Models (MMIPM). The similarity of IPM and MMIPM is that both methods use two kinds of robot, a simple kind of robot, an upside-down kind of pendulum which is comprised of a cart and a pole, and a humanoid. Due to the difficulty of controlling a complex humanoid, the simple robot is first used. By using conversion after mapping the present state of simple robot, signals for controlling the humanoid can be calculated. The difference of the quality of movement of characters between IPM and MMIPM. (Photo courtesy of Kwon) One of the main contrasts between IPM and MMIPM is the way mapping is done. While mapping for IPM must use both the center of mass and center of pressure of the robot for mathmatical differentiation, momentum-mapping uses the center of mass. Differentiating one time instead of two is highly beneficial because the quality of signals improve. In addition, if two feet of the humanoid are above the ground, center of pressure becomes absent, mapping with conventional IPM method become impossible, whereas mapping with MMIPM is still possible. MMIPM also concentrates on modeling the changes of postures and how much the human body is tilted during performing certain actions. Therefore, because of the differences or technical improvements of MMIPM compared with IPM, expressing more natural and difficult movements can be realized. As a result, Kwon could successfully produce more natural movements of running, and complex acrobatic motions such as spinning, backflip, and handstand. Character performing a backflip. (Photo courtesy of Kwon) Character performing a handstand. (Photo courtesy of Kwon) Professor Kwon’s future studies also focus on human movements, which are reenacting motions of soft parts of the human body, such as fat. According to Kwon, the technology which is used for today’s animations and games is from a decade ago. “Although at first a game with great graphics may seem like something big. However, when you start an online game, soon you will realize that the actions of your characters are mere repetitive movements, ” said Kwon. Through his study, Kwon aspires to broaden the limits of present day game-play and animation. “My ultimate objective is enabling game characters to perform unexpected movements when players enjoy unpredictable game plays,” Kwon revealed. Jang Soo-hyun luxkari@hanyang.ac.kr Photos by Choi Min-ju