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2018-02 04

[Academics][Excellent R&D] From Harmful to Useful

It is undoubtable that global warming and air pollution are two of the most serious and urgent problems that countries all over the world need to worry about as members of the planet. However, due to the industrial development and the necessities of life, goals and promises of reducing harmful gas are not successfully being met by the majority of the countries that pledge to do so. Sang Byoung-in (Department of Chemical Engineering), in an attempt to reduce the amount of carbon dioxide in the atmosphere, has suggested a way to make use of the bountiful resources around us in his research by the name, ‘Power to Gas Technology for Stability of Future Energy Provision.’ "The amount of carbon dioxide can be effectively reduced by capturing it and turning it into a useful gas." Previously, there has been an approach suggested to reduce carbon dioxide in the atmosphere. It was to capture and store it, then bury it deep underground or under the ocean ground so that it would not cause any pollution in the air. This method is not being pervasively used because of the unfitting geological condition of Korea and its tremendous cost considering the amount of carbon dioxide that needs to be handled. To counteract this complication, Sang researched methods to utilize the captured carbon dioxide. By capturing the carbon dioxide in the atmosphere and separating hydrogen and methane in it, a new source of energy is created. Since methane gas is used in almost every aspect of our society, Sang’s research could greatly contribute to alleviating the current situation concerning air pollution and energy depletion. “Hydrogen could also be derived, but methane is a better option as it has a much wider range of usage and that it is far easier to store. Hydrogen would require costly equipment to deposit, unlike methane, which could be stored within affordability.” There are several reasons why methane gas is such a good product out of carbon dioxide. Since methane gas is commonly used in our daily life, converting carbon dioxide into methane gas would be both economically and environmentally favorable. It also means this new source of energy will be extremely convenient and effortless to supply. Since 90 to 100 percent of Korea is covered with methane gas pipelines, the newly generated energy will be conveniently supplied through the current infrastructure. Moreover, unlike other gases such as hydrogen, methane gas is easy to store because it does not require a special tank for storage. Hydrogen is difficult to store due to its minuscule molecular size, demanding special tanks of higher price. Most importantly, methane gas is incomparably more widely used—for power, heat, mobility, and more. By turning carbon dioxide into mathane, useful energy can be generated. (Photo courtesy of Sang) Furthermore, Sang’s research also focuses on cultivating the microorganism that produces methane on its own only by feeding on carbon dioxide and hydrogen. Such a microorganism is called hydrogenotrophic methanogen (methane-producing organism that feed on hydrogen), which could be cultivated in water of 55 to 65 degrees Celsius. Inside water, just by absorbing carbon dioxide and hydrogen, the microorganism could produce methane. The problem is, these microorganisms are quite fastidious and challenging to harvest. They are strictly anaerobic, meaning they cannot survive once they encounter oxygen. To overcome this challege, Sang is currently researching to successfully nurture the microorganism. In addition, his further goal of research is to cultivate methanogen that does not require hydrogen. The reason why the microorganism feeds on hydrogen is because they need electrons in it. However, Sang wants to cut down the cost of nurturing these microorganism by removing hydrogen in their production. To provide what they need for survival, Sang will research deeper on feeding the microorganism directly from the electrode so that the process of microorganism producing methane would be more effective in terms of cost and productivity. Sang and his students in his lab are researching to evolve microorganism that feeds on electrons. Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Lee Jin-myung

2018-01 08 Headline News

[Academics][Excellent R&D] Big Data and the Key to Handling Them

In the society where social networking is becoming more and more inseparable from people, an ever-increasing number of users are getting involved. As a consequence, the ocean of big data in corresponding area is expanding its capacity, and there has been a need to efficiently analyze and organize the data. In his Big Data Science Laboratory, Kim Sang-wook (Department of Computer Science) has been continuously researching the topic. In his recent paper “High-performance graph data processing on a single machine,” Kim has proposed a method to increase the performance of data processing and to efficiently arrange the mass of data. A graph or a network is a complex arrangement of nods and edges, which are the components of an online world such as its users and webpages and the relationships they have, respectively. In a social network, for example, each user will be labeled as a nod and the relationships that users have with other users or webpages will be marked as edges. “Where could this graph be used? Numerous types of data could be modeled in the form of this graph. For example, Facebook users and their friends, bloggers and their neighbors, and the recommender system of search engines such as Youtube, Amazon and more are all related to the graph of nods and edges.” Depending on who views what how many times or which page receives the most views, weights could be added onto the edge between the user and the page, zooming out of which will form a complex web of a graph. Big data is usually calculated in a matrix, the process which is made more efficient by Kim. (Photo courtesy of Kim) How Kim made the graph data processing more efficient is by creating three constructive approaches. First, he made matrix multiplication of data simpler and easier by balancing the load over each thread blocks of the matrix. When there is a poor balancing of load input in each row of the matrix, the multiplication process could take a long time and the performance might not be excellent. With the balanced threads of the matrix, however, even distribution of workloads would resolve this problem and it would be much less time-consuming compared to the previous method. Second, Kim created a graph engine, which is a storing software that handles data in a productive manner. In order to analyze a graph, the data must be saved in a disc first. In doing so, the tool that helps the disc to save the data more efficiently is the graph engine, which Kim proposed in his paper. “The strength of our laboratory is that we research on two aspects of data. By researching the performance-wise aspect of the data and also the analytical aspect, we leave no chance of missing a single detail of matter.” Thirdly, Kim introduced a placement algorithm that could simplify the arrangement of nods in a graph engine. Previously, when a graph undergoes a process of analysis in a graph engine, the data was put in the exact same order as it entered. Clusters of irrelevant nods could cause a delay in the data processing, which Kim solved by discovering that by sorting the nods of similar traits together, the overall performance of graph processing could show a big difference. With the same data, different outcomes could be derived by finding out the advantageous groupings of nods. With his current research of graph engine and graph modeling, he could use them as stepping stones to move onto his next research. Kim’s future research is directed toward community detection and recommender systems. With the modeled graph of data, analysis of the data could easily be made and the members of a social community with similar interests could conveniently be detected. On a similar note, a recommender system could be improved by analyzing what a user likes, clicks, views, buys, or prefers with the graph: a more accurate recommender system could be developed. With the building blocks he has worked on, Kim will be building on more as he carries on his future research. "Characteristics of the data could be figured out by analyzing the graphs." Jeon Chae-yun chaeyun@hanyang.ac.kr Photos by Kang Cho-hyun

2017-12 25

[General]Finding Facilities

“I know it’s somewhere, but where is it? I can’t remember!” “Let’s look at the campus map.” “Oh, that’s too much work. Forget it.” Have you and your friends ever had this conversation? For those who want to go to a café or a convenience store or need to find a place to study but cannot recall the exact location, then this article will be the perfect helper. Where is my caffein? All the cafes on campus are marked on the map. Everyone seems to grab a cup of coffee in the morning to wake themselves up from sleepy mornings. In Hanyang campus, caffeine and other delicious drinks are always there to rescue sleepy students. Starting from the subway station, café CNN is open from 8:30 a.m. to 8:00 p.m. during weekdays and from 9:00 a.m. to 7:00 p.m. during weekends. Coming out of the Aejeemun, in Hanyang Plaza, there are four places to pick a drink from: The first is Twosome Place which opens at 7:30 in the morning and closes at 9:30 p.m. during weekdays and is open from 8:30 a.m. to 8:30 p.m. during weekends. The second place is CoffeeA which is open from 7:30 a.m. to 9:00 p.m. during the semester and from 7:30 a.m. to 8:30 p.m. during vacations. The third place, Coffee Bay is open from 8:00 a.m. to 8:30 p.m. during the semester and from 9:00 a.m. to 6:00 p.m. during vacations. Located on the second floor is the fourth and final place, Brow Nabi which is open from 8:00 a.m. to 9:00 p.m. during the semester and from 8:00 a.m. to 8:00 p.m. during vacations. Additionally, right behind Hanyang Plaza is the Student Union Building, harboring Café Grazie which is open from 8:00 a.m. to 8:30 p.m. during weekdays and from 8:00 a.m. to 6:00 p.m. on Saturdays (closed on Sundays and holidays). Moving a little upward to the amphitheater, Café Tiamo gives out an aromatic coffee smell. They open from 8:30 a.m. to 9:00 p.m. on weekdays during the semester, from 9:00 a.m. to 7:00 p.m. on Saturdays during the semester, and to 6:00 p.m. on Sundays during the semester. During vacation periods, Café Tiamo is open from 9:00 a.m. to 7:00 p.m. on weekdays, from 11:00 a.m. to 6:00 p.m. on Saturdays, and from 11:00 a.m. to 5:00 p.m. on Sundays. Moving a little more upwards, in front of the Paiknam Library is another Café Tiamo available from 7:30 a.m. to 9:00 p.m on weekdays and from 8:00 a.m. to 7:00 p.m. on Saturdays during the semester: during the vacation period, it is open from 8:00 a.m. to 6:30 p.m. on weekdays and from 8:30 a.m. to 6:30 p.m. on Saturdays. On the outer ring of the campus, other cafes are also available: Café Dopio on the third floor of the FTC building (8:30 a.m. to 7:30 p.m. on weekdays, from 9:00 a.m. to 6:00 p.m. on Saturdays), Café Queue on the third floor of IT/BT Building (from 8:30 a.m. to 8:30 p.m. on weekdays, from 10:30 a.m. to 5:30 on Saturdays), Café Namu on the first floor of Student Residence Building II (8:30 a.m. to 7:30 p.m. on weekdays and from 9:00 a.m. to 6:00 p.m. during semesters and from 8:30 a.m. to 7:00 p.m. on weekdays and from 9:00 a.m. to 6:00 p.m. on weekends during vacations), and Café Pandorothy on B1 floor of the Humanities Building (9:00 a.m. to 5:30 p.m.). Getting into the inner side of the campus, another café is located on the B1 floor of Haengwon Park (open from 8:30 a.m. to 7:30 p.m. on weekdays and from 8:30 a.m. to 2:00 p.m. on weekends during semesters and from 9:00 a.m. to 4:00 p.m. on weekdays during vacations), and another is located on the first floor of the Cyber University (from 8:00 a.m. to 8:30 p.m. on weekdays). The Amphitheater Cafe The College of Humanities Cafe I need a quick snack! All the yellow marks represent convenience stores. The green are PC rooms. For those who study overnight on campus, CU convenience stores are open 24 hours in front of the Paiknam Library and in the Advanced Materials and Chemical Engineering Building. Other CU stores are on the first floors of the Student Residence Building I and II, both open from 8:00 a.m. to 00:30 a.m. on weekdays, from 9:00 a.m. to 00:30 a.m. on weekends, and from 8:00 a.m. to 2:00 a.m. everyday, respectively. Another CU in Haengwon Park is open from 8:00 a.m. to 9:00 p.m. on weekends and from 8:00 a.m. to 6:00 p.m. on weekends during semesters and from 8:00 a.m. to 6:00 p.m. on weekdays only during vacations. The two E-Marts on campus are located in the Humanities Building (from 8:00 a.m. to 9:00 p.m. during weekdays and from 8:00 a.m. to 3:00 p.m. on Saturdays) and in the amphitheater (from 8:00 a.m. to 10:00 p.m. on weekdays and from 9:00 a.m. to 7:00 p.m. on weekends). The only Seven-Eleven is on the second floor of the Cyber University II (from 8:00 a.m. to 10:00 p.m., Monday thru Saturday). On the fourth floor of the Olympic Gymnasium, there is a small store open from 8:30 a.m. to 7:30 p.m. on weekdays during semesters only. Lastly, in the subway station, IGa Mart is open from 6:00 a.m. to 11:00 p.m. on weekdays and from 6:00 a.m. to 7:00 p.m. on Saturdays. The Amphitheater Convenience Store Search and type PC rooms that students can freely use are available throughout the campus: beginning on the second floor of the IT/BT Building (from 9:00 a.m. to 6:00 p.m. on weekdays), in the Business Building, B2 floor (from 9:00 a.m. to 9:00 p.m. from Monday to Friday), in the Economics and Finance Building, third floor (from 9:00 a.m. to 7:30 p.m.), in the Engineering Building I and II, third and fourth floors, in the Natural Sciences Building, first floor (from 9:00 a.m. to 5:30 p.m.), in the College of Education, second floor (from 9:00 a.m. to 10:00 p.m. on weekdays), in the Humanities Building, first floor (from 10:00 a.m. to 5:00 p.m.), in the College of Social Sciences, second floor (from 10:00 a.m. to 4:30 p.m.), in the College of Human Ecology, fourth floor (from 9:00 a.m. to 5:00 p.m. with an hour clear-out time at noon), in the College of Policy Science, first floor (from 9:00 a.m. to 6:00 p.m. during semesters and from 8:30 a.m. to 2:00 p.m. during vacations), in the Music Hall II, second floor (from 9:00 a.m. to 5:00 p.m. on weekdays during semesters and from 10:00 a.m. to 5:00 p.m. on weekdays during vacations), and finally, in the Law Building III, first floor (from 8:30 a.m. to 8:30 p.m. on weekdays, from 9:00 a.m. to 12:00 p.m. during semesters, and from 10:00 a.m. to 5:00 p.m. on weekdays during vacations). The College of Humanities PC room Work, work, work Fitness centers and study halls are marked in blue and red, respectively. Meals and coffee are important but so is exercising. Here is the list of fitness centers on campus: (1) Student Union Building’s Health and Sweat (from 6:30 a.m. to 10:00 p.m. on weekdays and from 9:00 a.m. to 5:00 p.m. on Saturdays), (2) Olympic Gymnasium (from 3:00 p.m. to 8:30 p.m. on weekdays only, only available when the weight training class is not in session), (3) Haengwon Park, (4) Student Residence Hall V (from 10:00 a.m. to 10:00 p.m. everyday, for dormitory residents only), (5) Student Residence Hall II (from 7:00 a.m. to 11:00 p.m. everyday for dormitory residents only). In addition, the basketball court next to Haengwon Park is open to everyone, while the neighboring clayed tennis court is only for staff. The grass court may be used by students with a reservation (available from 8:30 a.m. to 5:30 p.m. for two hours per person). Health and Sweat in the Student Union Building. Health and Sweat Last but not least Study halls are what most students should be interested in the most. There are study halls here and there, around every corner in Hanyang campus. Starting with the International Building, the IT/BT Building, the Natural Sciences Building, the Medicine Building (for the department students only), the Medicine Building II, the Engineering Building I, and the Human Ecology Building, there are many more to visit. In the Policy Science Building, the Business Building, and the Economics and Finance Building (during exam weeks only), the study halls are open 24 hours. In the College of Education, the study hall opens early in the morning until midnight (7:15 a.m. to 00:00). In the College of Social Sciences, the study hall is open from 7:00 a.m. to 11:00 p.m. Lastly, in the Humanities Building, the running hours are from 8:00 a.m. to 11:00 p.m. Study room in the Humanities Building Study hall in the Humanities Building. Study hall in the College of Social Sciences A cup of coffee in the morning, quick snacks in between classes, the PC room in the afternoon for assignments, the fitness center in the evenings for health, and the study hall at night for studying are all important parts of a student's life here on campus. Stay convenient and academic! Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Kang Cho-hyun Design by Cho Eun-bi

2017-12 04

[Academics][Researcher of the Month] Obesity, Everyone’s Enemy

Regardless of gender, age, and nationality, obesity is a health problem that is affecting an increasing number of people. While most people think obesity merely has to do with dietary habit, it shows close relations with metabolic diseases and cancer. In other words, obesity is not just caused by the consumption of large calories, but there are other possible factors to it. Kim Yong-hee (Department of Bio-Engineering), whose interest lies in obesity and the ways to prevent and cure it, discovered an innovative way to counteract obesity in his paper “Visceral adipose tissue macrophage-targeted TACE silencing to treat obesity-induced type 2 diabetes,” which was coauthored by two of the graduate school students of the department: Song Yoon-sung (2nd year) and Yong Seok-beom (3rd year). Kim explained that by targeting the inflammation caused by the excess fats, obesity can be treated. The existing method used to treat obesity was to suppress appetite by touching the nerve system, for it was mainly believed that the root cause of obesity was excessive-consumption. However, Kim discovered in his laboratory that obesity has to do with inflammation within fat-storing tissues, which are called adipose tissues. Inside a patient’s body, the excess fat that cannot be stored in the adipose tissue spreads to its surroundings, which then causes inflammation when in contact with other types of cells. A type of white blood cell that engulfs and digests foreign cellular debris called macrophage are largely responsible for obesity-induced adipose tissue inflammation. A breakthrough in Kim’s research is that obesity can be treated by preventing the accumulation of fat within the body, by controlling the inflammation through gene delivery, not by suppressing appetite. In such a scenario, the gene delivery system Kim and his students have invented in the laboratory refers to the targeted gene delivery system that is capable of selectively targeting the visceral (relating to the intestines) adipose tissue macrophages, which are the major cause of inflammation because they produce a type of protein called cytokine. The excess fats that cannot be stored in the adipose tissue spread to their surroundings, and when they come in contact with cytokines, that is when the inflammation springs. By targeting the inflammation, which is the root cause of obesity, the treatment for obesity is made possible. There have been several clinical studies that have highlighted the significance of inflammation regarding obesity, but few therapeutic approaches have been suggested. Through his research, Kim and his students have proposed a therapeutic strategy of targeted gene delivery that could safely treat the disease without any side effects. This strategy is also favorable in treating type 2 diabetes, which primarily occurs as a result of obesity. It is preventable by staying at a normal weight through regular exercise or dietary changes. This could also be the way to prevent obesity as well, which, in other words, means that the cause of the two diseases have the same outset, which is the inflammation within the tissues due to being overweight. Therefore, Kim’s proposal of therapeutic approach for obesity can also treat type 2 diabetes. Targeted gene delivery strategy could kill two birds with one stone. Building on his current studies, Kim’s future research aims to create more formulas for drugs that could treat obesity. “Liposuction is an extremely dangerous surgery because it sucks the good fats as well. Obesity is surely preventable or even cured for those who are not severely obese. However, those who are super-obese, their genes could transform into obese genes and this can affect their children. So, the targeted gene delivery approach can optimally be used in the future.” Kim specifically chose the topic of inflammation of obesity because he wanted to find a narrow gate and open it wide. Since not many solutions for obesity inflammation have been discovered, he wanted to delve into the studies of this topic and create a cure for the countless people waiting for treatment. Kim always aspires to study and research on topics that is subject to a breakthrough outcome. "I am interested in finding cures for diseases that do not have many treatments." Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Kabg Cho-hyun

2017-11 14

[General]Fusion Major 101

Hanyang University Social Innovation Center is carrying out the initiative called “HUGE (Hanyang University for Global Engagement)”, which aims to help the youth become a true global leader in accordance with the founding philosophy of "Love in Action". It attempts to foster global leaders who practice the spirit of sharing by facing global social issues and resolving them. Fusion majors is one of the means by which innovative global leaders are fostered, by opening new perspectives and enagling them to lead the society into an innovative direction. What is a fusion major? Fusion majors are majors established by combining courses of preexisting majors or departments, marked as the second or the third major of the student. The currently established fusion majors on the Seoul campus are as follows: Humanities Transdisciplinary Studies (consisting of Art Technology, Technoscience Humanities, Digital Storytelling, and Engineer Communicatiton), Humanities-Software Convergence, Public Administration Humanities, Chinese Economy and Trade Program, Global Business Culture, Classical Reading, Business Foundation, Automobile Software, and Big Data Science. As for the ERICA campus, there is Global Strategy Communication, Design Engineering, and Software for Emerging Technology. Fusion majors are innovative in the way that they can help students become outbound experts, encompassing comprehensive knowledge from different perspectives rather than an inbound single viewpoint. Although it may sound similar to double majoring, there is a distinction between the two. While the former is the studying of two separate majors at the same time, the latter introduces the two different fields in one bowl, combining different majors and creating an innovative one. By combining different fields, fusion majors offer a multiangular perspective. (Photo courtesy of CIO) “I am double majoring in Chinese Economy and Trade Program because I wanted to study further and deeper about China aside from the studies in my first major, digging more into the politics and economic aspects of the country. I want to recommend this major to others who are interested in China because it enables you to comprehend the country from an acute viewpoint,” answered Jung Jae-woo (Chinese Language and Literature, 3rd year). According to Jung, the fusion major enables him to acquire knowledge not provided in his first major from an innovative, integrated perspective of different majors, which truly helps him dig deep into the root of the expertise. “It’s also possible that the fusion majors becomes a separate department in the future, depending on its performance. And there is no restriction or regulation to foreign students, as the same rules apply to all students. Fusion majors are for anyone who wants to become an innovative global leader!” noted Lee Won-gurl from the Center for Creative Convergence Education. He added that the greatest advantage of fusion majors is the convergence of different fields, going beyond the boundaries of each domain and creating an outlook of integration for the next level. Fusion majors can open the career path to unfixed routes, from Humanities to Engineering, for example. Lee believes fusion majors could open unprecedented career paths. Some FAQ’s! When considering double majoring, students often come up with one or more of the following questions: Q: I am a double-major student, and what happens if I cannot fulfill the graduation requirement in time? A: You will be disqualified if you fail to fulfill the requirements. Taking seasonal courses can be an option. Q: If I am an ERICA campus student, and I applied for a double-major on the Seoul campus. Which campus do I belong to? A: Those who have successfully fulfilled the requirements in the 4th year will belong to the Seoul campus under that situation. In other words, when finishing the courses of your second major, you are a Seoul campus student. However, after completing the course, when going back to your first major, you will receive your degree on the ERICA campus. Q: What will my graduation certificate look if I double major? A: Your first and second major will appear in parallel on your graduation certificate. In terms of the certificate paper, you will receive separate papers for your first and the second major. Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Kang Cho-hyun

2017-10 29

[Academics][Researcher of the Month] The Faster, Simpler, Easier, the Better!

Today, we live in the world where everything is becoming mechanized, meaning the field of electronics and mechanics are infinitely evolving. Conspicuous or not, there are small and big changes around us that make our lives more convenient and more efficient in various ways. Professor Hong Jung-pyo (Department of Automotive Engineering), in his paper, “Simple size determination of permanent-magnet synchronous machines” has established a milestone in the field of both electronics and mechanics, by proposing a means of simplifying the process of designing and developing machines. Hong’s research can determine the direction of the process of motor’s development. When designing and producing an instrument, engineers go through trials of experiments, trying to pick the best formula by observing the results of each experiment. Such a process demands laborious amounts of time and cost, which under certain circumstances can be unaffordable. A perfect, well-constructed device or motor has been made through stages of trial-and-error so far, being tested on their performance in each stage. However, with Hong’s proposal of simulation experiment, this entire step could be greatly reduced, simply by executing the experiment with the simulator. When working on a motor, it is important to harmoniously combine the techniques of both the electrician and the engineer. However, what is more important is, the two fields should not be seen separately. The two perspectives commingled as one will bring the best result, whereas if they are regarded separately, failures can arise, and it would be difficult to figure out where the problem originated from. The simulator Hong proposed in his paper acts not only as a catalyst in making the process of developing machines faster, simpler, and easier by exempting the trial-and-error step but also allows to preview an outcome of integrated viewpoint. “For a better understanding, imagine this picture. There is a device I’m trying to make, and I want to equip this circle-shaped part. After doing so, I still think I can improve the final product somehow, so I will try dismantling the part I just added and equip this oval-shaped part. When doing so, I have to carefully remove the circle-shaped part and re-equip the oval-shaped one and then compare the two results to see what the best combination is.” This process of trial-and-error and comparison, which is time-consuming, is what Hong wanted to resolve with his research. With the simulator, engineers can simply enter the input and compare the different outcomes and go for what is the best much more conveniently. Everything that moves, including cars, elevators, and airplanes, are all powered by electric motors. In the future, the range of usages will increase infinitely which means there will be experiments after experiments for the development of motor-based objects. In each case, Hong’s research can greatly reduce the development process and offer the direction of choices for better outcomes. His future research goal is to create a unified solution of electronics and mechanics, which will boost the usability of the machine itself. Hong’s research will be a constructive contribution to engineers. Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Park Young-min, Kim Youn-soo

2017-09 25

[Academics]A Tactile Sensor for Texture Recognition

With computers today, auditory and visual senses can be materialized—through sound and screens. The other three of the five senses, on the other hand, have not yet been on the platform of materialization because they require a somewhat more delicate mechanism and are harder to deliver with technology. Professor Park Wan-jun (Department of Electronic Engineering), in his paper, “A tactile sensor using single layer graphene for surface texture recognition”, presented and elaborated on a tactile sensor that could distinguish different materials, which opens many doors for future technology. It is hard to imagine the sense of touch being delivered with a machine because it is usually perceived as something only humans are capable of. But why can sound and sight be materialized by computers but not touch? The answer is, electronic signals for sound and vision are made possible in the aspect of engineering, while that of touch is not. What Park presented in his paper is a small chip-like device that enables perception of touch for surface texture recognition. The output of Park's research, which is a chip-like electronic device. (Photo courtesy of Park) The first thing he had to do, according to Park, was to turn the sense into electronic signals. Only then can the machine read what is being conveyed. Once the signal of touch is conveyed to the device, it will analyze the signal and distinguish what kind of texture it is. The subtle and clear differences in terms of texture between various kinds of surfaces can be perceived and distinguished by the tactile sensor, detecting the microscopic scale of differences. There is a single layer of graphene embedded in the device, which creates a different resistance variation each time a surface comes to interaction. It is what functions as the main player in telling apart different surfaces because it is what creates the different signals. The signal is then sent to the computer by the chip, which is to be analyzed and categorized into different kinds of textures. “Just as there is virtual reality (VR) for sight, a touch-version will be possible with this device,” anticipated Park. “A tactile display is also possible with this device, as the signal for touch is now readable by the computer. If you put your hand on the tactile display device, you can actually feel whatever the object or texture input in the computer is,” envisaged Park. This technology is also applicable in the medical field. Those who lost their sense of touch in certain parts of their body by burns, for example, will be able to regain their sense by implanting this small device in the portion of injury. Now that the signals of touch can be read by the device and since senses can be transmitted in the form of signals, delivery of the sense of touch is made possible. The inserted chip will send signals to the brain and this will enable the patient to feel what is being touched. “In recap, this research of mine has provided a human-sensorlike device that will enable transmission of the sense of touch in terms of engineering. Now I’m currently working on machine learning by categorizing and classifying different textures into groups and making the device absorb the data. The ultimate goal of my research is to complete materializing the sense of touch from the perspective of engineering so that further technologies could be developed based on my research,” planned Park. Park's further research is set on mechanizing the sense touch. Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Choi Min-ju

2017-08 28

[Alumni]The Master of Go

Currently a professional player and a professor of the game Go, Jeong Soo-hyun (English Language and Literature, ’83) dreamed of becoming a professional Go player since he was in high school. Jeong learned to play Go as a student and was charmed by the joy until he eventually decided that he wanted to be a master of it. As a professional player, Jeong has written about 40 books, has been teaching Go for more than 20 years, and has telecasted on numerous TV programs. Go and life Jeong navigated his life toward the world of Go and sought his career in that field at first because he was purely attracted by its joy. It all began as an interest and a passion, after which he grew to be more enthusiastic and ambitious. To Jeong, Go is not just a job but rather something that links to his mind and thoughts. “I found another world studying Go. I might call it a world of Go culture,” laughed Jeong. “I often refer to Go as a panacea, which is the cure for all ills. I sometimes get amazed by how extensive Go can reach in our daily lives. It teaches us so much!” exclaimed Jeong. After graduating from high school, he entered the Korea Baduk (game of Go) Association as a researcher, which is the first and indispensable step of becoming a professional. He had about 40 Go matches every year, through which Jeong studied and accumulated his skills and knowledge. “It’s not through practice that you improve yourself in Go, but it is rather through analyzing other players’ games. So I made several small groups and focused on growing insights and developing my own mastery.” Jeong read books about Go in order to get the holistic picture of the game and to master the theory of it. The more he studied, the more he was absorbed into the game. Jeong reached the highest level of 9th grader in Go after countless matches starting from level one when he was 41. Higher levels could be achieved through gaining points by winning Go matches. “I highly recommend learning or practicing Go as a hobby. It is not only fascinating itself but also extremely lesson-full and wisdom-giving at the same time. Recently, Go has become a global mind-sport, meaning being good at it will enable you to be good at communicating with people.” After becoming a professional Go player and entering Hanyang University, Jeong has established a club named “Hanyang Giwoohui”, which has become more active even after Jeong’s graduation. "Go is full of lessons!" (Photo courtesy of heraldcorp) As a professional and a professor It has been more than 20 years since Jeong became a professor of Go at a Korean university. He spent the longer part of his Go life as a professor than as a professional. With his life motto “no pain no gain”, he has been teaching his students that where there is no effort, there is no outcome. “What I’ve learned through my life as a Go player is that it feels more worthwhile to do something for the others than for just yourself and that the ultimate result will be in your favor. I believe doing what you love with passion will beget meaningful outcomes,” manifested Jeong. Winning the second place in both KBS Baduk Match and SBS Baduk Match, and being the first winner of the Professional Baduk Match, Jeong’s name is mentioned in lists of the winners of many professional Go matches. “I only won the second place because my rival was mighty. I can still recall the bitterness,” reminisced Jeong. Currently taking the role of the president of Korea Professional Baduk Association and Korean Society for Baduk Studies, Jeong is continuting his studies of Go. “No pain no gain is my life philosophy. If you don’t work, there will be no award.” Having published about 40 books of baduk (Go), Jeong’s recommendations for beginners are ‘Introduction to Baduk’, ‘Master of Management’, and ‘CEO Who Reads Baduk’, all of which are perfect for baduk beginners to read. He first wrote a book due to a request of learners, after which Jeong got a number of requests from other publishing companies to publish more books. Thanks to all his publications, he acquired the nickname “baduk professor” even before he became one. His achievements all together as a professional Go player spotlights him as one of the most prominent players. "I believe hard work always pays off. There awaits rewarads for those who work hard." (Photo courtesy of heraldcorp) Jeon Chae-yun chaeyun111@hanyang.ac.kr

2017-08 15

[Academics]Upgrading Transcriptome Map

Incredible amount of transcriptomes encoded by eukaryotic genomes has been produced as RNA-sequencing reads are published in piles. The transcriptome is the sum of all RNA information contained in a body’s cells, which is an indispensable data when creating the transcriptome map of the body. The current map, however, is not its apotheosis since it was constructed based on RNA-seq reads that lack their orientations and certain boundary information. In his paper “High-confidence coding and noncoding transcriptome,” Professor Nam Jin-wu of Department of Life Science has presented the transcriptome map with RNA-seq reads with high accuracy and efficiency. “What makes this research valuable is its contribution to the scientific community. It will function as an indispensable infrastructure.” RNA and the map In the past 10 years, with the technology of next generation sequencing (NGO), data of individual’s genome and transcriptome has been developing at a rapid pace. Genetic information of both healthy and diseased individuals aggregates to approximately 10 peta bytes from all over the world, from which Nam focused specifically on analyzing the transcriptome, disregarding the genome for the moment. A critical difference between the two is that genome has orientation while transcriptome lacks it. This indicates that it would be extremely difficult and inconvenient to arrange the little pieces of information to form the whole genetic map of transcriptome. “What it means by ‘lack of orientation’ is, simply picture this situation: putting batteries in a remote control which has no plus or minus indicators. You would have to find the right direction by just trying. It is also like jigsaw puzzles where you have to search thoroughly the scattered pieces and find and put the right ones together until you get the whole picture,” explained Nam. Constructing a genetic map with orderless pieces of information could be an arduous task, since the massive bio-big data offers a tremendous amount of genetic information and they lack orientation. What Nam has created through his research is an algorithm that predetermines the orientation and boundaries of transcripts and genetic information. This will not only lessen the work of constructing the transcriptome map by assembling RNA-seq reads that lack orientation but also increase the accuracy and quality of the resulting maps. The outcome of his research, in a word, orients the directionless RNA-seq reads and locate them where they belong. Now with the more accurate and systematic transcriptome map, the amount and structure of RNA in a cell in the body could be figured. Nam first started this research three years ago, spending the first two years constructing the algorithm and spending the last year producing data using NGS. He is currently researching on the noncoding RNA (RNA that does not produce protein), which is highly related with various types of cancer and other rare diseases. The ultimate goal of Nam’s studies is to solve the mystery of unexplored RNA. 98% of RNA in human body belongs to the noncoding category, so how exactly do they affect the way a human being is and how do they account for different anomalies? “A good question begets a good study.” Jeon Chae-yun chaeyun111@hanyang.ac.kr Photos by Choi Min-ju

2017-08 07

[Culture]Apps You Need in Your Life

Kakao Talk, Jihachul, Naver Map, Seoul Bus, Naver Dictionary, Candy Camera, Snow, Melon, Kakao Taxi, and various coffee shop stamp apps are all typical applications found in an ordinary korean’s smartphone. These apps are common yet indispensable to the extent that they have become a big part of people’s daily lives in Korea. Besides these everyday applications, what are some fun, genius apps worth downloading? From left to right, Date Pop, Seoul Travel, Albamon, People of Delivery, and Zigzag. (Photo courtesy of play.google.com) Brilliant and convenient First things first, for those who love to visit new places, either one of these two applications are highly recommended: Date Pop or Seoul Travel. These applications are more than just handy when looking for some fun places to hang out with friends and lovers or when finding appetizing cafes or restaurants. From location, menu, price and reviews, the apps provide much information and works as the encyclopedia of enjoyment. Creation of such applications has motivated a win-win situation for both users and business owners. People can gain fun and convenient information with just a few taps on their smartphone screen while the app functions as a great loudspeaker for the restaurant and cafe owners. By providing wandering roamers with countless options for their destination, the app has become a great mean of advertisement and a plan maker at the same time. Click the region you want to go and see where you want to visit. (Photo courtesy of achimjuice.tistory.com) Price, location, and menu are all listed in Seoul Travel. (Photo courtesy of app.chosun.com) When looking for an alba, or part-time jobs, there is nothing more helpful than the app Albamon. If Date Pop and Seoul Travel are the mobile books of fun places, Albamon is the one for people looking for part-time jobs. The app displays countless employment notice from myriad of companies, restaurants, cafes, stores, and more. Jobs can be funneled by one's setting according to his or her categories such as payment, location, working time, and age requirements. With the right setting, finding a perfect fitting alba for one is not a tricky task anymore. It is an useful app to anyone who is looking for all kinds of part-time jobs. Detailed, comprehensive, and individual-tailored part-time job information are provided. (Photo courtesy of appannie.com) There is nothing more convenient than having one's food delivered when there is no time and energy to cook or go out to eat but hunger is demanding some action. In such situation, People of Delivery is the perfect app to satisfy hunger’s demand. Korea’s delivery service is something that exceeds the level of mere convenience but something that has developed into a huge part of its culture—even McDonalds is delivered. Fitting to the title, this app is the phonebook of all menus in Korea, since virtually all the menus are listed in the app and they are all ready to be delivered. Making the app more convenient, the categorization according to menu and franchised restaurants enables easy scanning for indecisive customers. According to menu and franchised restaurants, categories are made. (Photo courtesy of estimastory.com) Even online shopping can be an easier task with a mobile app. Zigzag is urgent to download for lazy shopaholics or thrifty shoppers. This application is the ultimate compilation of numerous online shopping malls, having the excellent function of gathering and presenting a particular item from different malls and allowing the shopper to compare the price at one sight. The app allows the shopper to find the item or fashion he or she is looking for and buy it at its best price. Enter the category of clothing, look through the list of online shopping malls, and compare the price are all it takes to purchase the exact item one wants at the most affordable price. Styles, price and items can be seen in one sight. (Photo courtesy of simsimha3.tistory.com) Jeon Chae-yun chaeyun111@hanyang.ac.kr