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2018-12 05

[Academics][Excellent R&D] Promoting the Global Competence of Domestic Businesses

The Korea Institute of Sustainable Economy (KISE) is one of the 18 surviving teams of the Social Science Korea (SSK) business, supervised by the National Research Foundation of Korea (NRF). Being evaluated on mainly three stages, KISE has managed to surpass the former two evaluation processes by currently focusing its research upon enhancing the global competence of domestic businesses, especially from the viewpoint of distribution systems. The Social Science Korea (SSK) business refers to a research program funded by the NRF, which was first started in 2010 with the purpose of promoting research institutions that conduct research activities in the field of humanities and social science on an international basis. Whereas most research programs of the social science field are funded on a two to three year period, the SSK is a more long-term one which was targeted with ten years of research, developing into three stages: small, medium, and large-sized projects. Only the teams that pass the evaluations of the NRF upon their progress on the former stages are able to move on to the projects of the later phases. With an initial 90 teams being selected out of the 500 that applied for the small-sized studies, only 45 were able to move on to the medium-sized projects. Once again, the number was halved to 20 when advancing on to the final stage, with the current surviving teams counting up to only 18. KISE In this sense, KISE has made great progress on not only the former two phases of research, but also its current large-sized project. Professor Kim Bo-young (School of Business), the director of KISE, explained the progress that KISE has gone through the past eight years of research since 2010. Professor Kim Bo-young (School of Business), the director of the Korea Institute of Sustainable Economy (KISE), is explaining the research progress that KISE has gone through since 2010. Small-sized project When first starting the SSK project, KISE first focused upon an agenda that had both a social impact and practical implications. With a large emphasis being put on the Free Trade Agreements (FTA), especially upon the food industry at the time, KISE targeted their research towards the sustainable growth of ‘Food Security,’ ‘Food Safety,’ and ‘Global Branding Strategies.’ While giving a main focus upon China, as a major trade partner, KISE studied and compared the food safety management system of the two countries. Also giving light to the distributional process of the food industry, KISE conducted research on the strategies of marketing and positioning that the domestic businesses should implement when exporting food. KISE studied the actual products of Korea and China, and the strategies that would help them gain competence in the global market and maintain a global brand image. With the studies mainly focused upon China, during this stage, Kim and her team formed a global network with Chinese research institutions, while holding various symposiums on the subject. Medium-sized project Moving on to the medium-sized project in 2013, KISE targeted their focus more to the open global market in order to meet the goals of sustainable development. During this stage, KISE also collaborated with the Climate Change Center of Konkuk University, in order to study the steady supply and growth of food during extreme weather conditions. The studies also became more diversified with focusing on mainly four points within the global market. With health products gaining more popularity in the global markets and the industry also fiercely enhancing, KISE studied how Korean health products, such as ‘Ginseng,’ should promote themselves within this particular market. Unlike the small-sized stage, the comparatives were extended from China to other countries including the U.S., Europe, and Japan. The international consuming patterns and how Korean industries should position themselves within such global trends was also a main study of this stage. Risk communication models were also researched and compared on a global basis. With various countries all having their own model, the advantages and disadvantages of each model were given a thorough research. Cooperation with the Ministry of Food and Drug Safety (MOFD) was made in order to find the ideal model of handling food-related crisis. The last of the four main points, the actual infrastructure of the distribution process, was not put upon full focus during the medium phase, but was given more light in the later large-sized project. Large-sized project (Current) When entering the large-sized phase in 2016, the distribution system went through a great change under the fourth industrial revolution. For this reason, the infrastructure of the distribution process, from the former stage, became the main research in this large phase. With offline and online channels becoming united, the distribution system is going through an innovative process in which the consuming patterns are also greatly changing. Being in an early stage of adaption of such systems, KISE targeted its research towards how both consumers and industries would react to this major change. Kim is explaining how the use of big-data will be an important aspect in the new distributional system of the fourth industrial revolution. How this innovative change is being accepted in other comparative countries was a start of this particular research. Collaborating with the Japanese company ‘MUJI’ and having access to their big data on consumption patterns, KISE is further targeting their research beyond the food industry into other various consumer goods and how the domestic industries should position themselves in this rapidly changing system. With the access of big data allowing KISE to extend and deepen their research, there are still some remaining goals of the institution. According to Kim, studying the practical implications that the innovative distribution system has upon market competence, the rapidly changing consumer patterns, and the global strategies that domestic businesses should implement within this new system to maintain their global competence and brand image are the main remaining tasks that KISE should conclude during this large stage. With around two years left for the SSK project, Kim asserted that this does not designate an end to the current research that KISE is conducting. Although the SSK project did indicate a start for KISE, it does not necessarily correspond to an end. Kim also added that there will be further tasks and research that she and KISE should conduct in helping promote the global competence of domestic businesses, especially in the forms of sustainable growth. Choi Seo-yong tjdyd1@hanyang.ac.kr Photos by Park Guen-hyung

2018-11 19

[Academics]Political Democratization to Democratization in Everyday Life

The viral tidal wave of the Me Too movement that started in 2017 did not fail to hit Korea as well. The liberal movement is one of the most revolutionary moments in Korea after the candle light revolution and the impeachment of the former president. Basing his research on such revolutionary acts, professor Joo Sung-soo (Graduate School of Public Policy) reported his study results and the newly coined term, “democratization in everyday life” on the Seoul Broadcasting System (SBS), one of the major national television and radio network companies in Korea. Joo Sung-soo (Graduate School of Public Policy) was a panelist on the SBS program, "A World Changed by Individuals." (개인이 바꾸는 세상) (Photo courtesy of Joo) Sexual assaults and corruption have existed since time immemorial. However, the explosion of allegations is a recent phenomenon that has not been observed before. According to Joo, the focus of the research was “why now?” It took Joo a laborious process of five months just to get together with various scholars and the SBS debate committee, after which he was finally able to conclude that the burst in the waves of accusations all boiled down to the activation of IT platforms and individualism. After the succession of the Sewol Ferry incident and the piles of unresolved sexual assaults and hidden camera issues, people have come to live in constant anxiety and fear that they can no longer trust anyone but themselves to help or protect themselves from these threats. Luckily, various online platforms have allowed these individuals to gather online to share and talk about their fear, dissatisfaction, and needs for change. People have then started forming a tight bond of empathy, which has eventually led to mass action, an example of which was the candle light revolution. The candle light revolution in the midst of growing anxiety was a historical event that ignited the beginning of a domino effect that uncovered the dirty crusts of our society. Joo is explaining the term 'democratization in everyday life' during the interview on November 16th, 2018. The successful impeachment of the former president after a series of protests has encouraged people to be aware of the power of their voice. If it was not for the online platform, the candlelight revolution would have been impossible. In other words, such revolutionary acts have all started from individuals who have gathered online. “The term ‘democratization in everyday life’ is based on IT technology and the tight-knit network that individuals form through online conversation and collective intelligence. In this way, individuals form a bond of empathy through which they can freely express themselves, and the freedom of expression is of course, one of the essential conditions of a democracy,” said Joo. Joo presents his research on SBS on November 2nd, 2018. (Photo courtesy of Joo) Joo admitted that the internet definitely has two faces. “Up till now, I think only the dark side of the internet has been dealt with. I won’t deny that it can isolate some people, but I believe that it has more positive sides to it than the negatives. This especially applies for Koreans,” said Joo. According to the World Economic Forum (WEF), 57 percent of South Koreans use social media for news at least once a day, while 47 percent use it several times a day. “It means that the majority of Koreans, especially teenagers and young adults, are constantly exposed to the online world, a place where they can learn new information on a daily basis and freely form new connections with other online-users countless times throughout the day,” said Joo. “Times are changing and I think that it’s important we make a change in our values accordingly.” The younger generations live in an era where they are constantly exposed to a free flow of information and democratic ideologies. Korea, along with its Chinese and Japanese counterparts, is slowly moving away from its authoritative culture. However, there is still a distinct generational gap as this sort of value change is more apparent in the younger and comparatively liberal generation. This can only create more generational conflict and societal instabilities. “That’s why I came up with the term, 'democratization in everyday life.' It’s different from political democratization because the latter only focuses on politics. Now we should focus not only on the politics but also on bringing democracy into our daily lives, fully living up to our rights like freedom of expression and speech,” said Joo. When asked to impart any lasting words of wisdom, Joo responded, “democratization in everyday life also exists in our school. Amongst your colleagues, your seon-hubaes (senior-junior), or between a professor and a student, there may exist some sort of authoritative relationship. I’m a professor, but I also go through unjust treatment from time to time. Democracy begins with being able to express. I hope this sort of free atmosphere also spreads throughout the school as well.” Park Joo-hyun julia1114@hanyang.ac.kr Photos by Lee Jin-myung

2018-11 13

[Academics]Complementary Relationship of the Chinese Government and Company

A practical curiosity of whether Chinese companies that have adopted ISO 14001, which is an environmental management evaluation system, can actually avoid the government’s inspections regarding environmental factors has fueled the research of Professor Choi Seong-jin (School of Business). Choi is not only interested in research based on China, but he is also actively supporting Chinese students in Hanyang University. His thesis is whether the voluntary restraint in private sectors and the compulsory monitoring of the government contradict or complement each other. Professor Choi Seong-jin (School of Business) is explaining the logic behind his thesis on November 9th, 2018. The marketplace is not perfect, as scholars of transaction costs have suggested. If the market is left freely, problems like monopoly or social costs like external diseconomy may increase. This brings out the need for governments to intervene and act as a surveillant so that the market is well off. However, companies find the monitoring of the government a burden, and governments themselves face the problem of enormous costs to oversee the activities of all companies. This has facilitated the enactment of a self-regulatory organization called private regulations. Namely, companies can reduce uncertainty coming from the government by implementing ISO 14001 before government efforts to intervene in environmental factors. By using data collected from approximately 1,500 Chinese companies in 12 cities, it shows that private and governmental regulations are in a complementary state. Furthermore, the research findings indicate the connection with the government, often times called “guanxi” in Chinese, strengthens this tendency. If ISO 14001 is adopted in a public institution, or if the CEO is connected to the government in some way, the company can be even more free from government intervention of environmental regulations. Choi revealed his hopes for Chinese students interested in business administration, entrepreneurship, or strategy to visit him in the School of Business any time. (Photo courtesy of Choi) Other than his vast array of research revolving around China, professor Choi is also very much interested in guiding Chinese students as a current adviser for them in the School of Business. “25 percent of students in the School of Business are Chinese students,” he said. “My goal when teaching at Hanyang University is that my research on China and my teachings of students would balance each other and bring about synergism in both areas.” He meets around five Chinese students a week for a face-to-face, casual talk about everyday life. Choi majors in the relationship between company and government also known as nonmarket strategy, as well as student entrepreneurship. He is the adviser of the “New Business Lab” at the School of Business, creating many goods that represent Hanyang University through a 3D printer. Although his major in nonmarket strategy is a non-mainstream field in research, professor Choi stressed his hopes for students in Hanyang University to not be afraid to go on the narrow, unfamiliar path of study or occupation, as long as they like what they are doing. Kim Hyun-soo soosoupkimmy@hanyang.ac.kr Photos by Lee Jin-myung

2018-11 05

[Academics][Excellent R&D] Reaching Out to Africa Through Public Diplomacy

With five of the ten fastest growing world economies dwelling in Africa, the continent has emerged to be a newly industrializing region. It is well-known as the blue ocean, appropriate for international investment and as a diplomatic destination. As a result, South Korea has shown interest in Africa. In particular, the Hanyang University Institute for Euro-African Studies became the first organization in the nation to establish the Korean Studies Center in Africa at Tanzania’s University of Dar es Salaam. The director of the institute, Professor Kim Sung-soo (Department of Political Science and International Studies) highlighted the significance and possible effect that the project by Hanyang University Institute of Euro-African Studies could bring. The project, “New diplomatic approach to Africa: Establishment and diffusion of public diplomacy strategies with Nigeria, Algeria and Tanzania," started on September 1st, 2018. It is led by National Research Foundation of Korea and the Hanyang University Institute for Euro-African Studies, functioning as the key research center. The project focuses on public diplomacy in Africa in the cultural, socioeconomic, and educational disciplines. Kim emphasized that public diplomacy should not be a one-sided donation but should support various activities that the citizens of the target countries are subject to through private and academic exchanges. “It is crucial to establish public foreign policy in accordance with the local situation in African countries,” asserted Kim. Professor Kim Sung-soo (Department of Political Science and International Studies) stated that the African continent and its nations are now a blue ocean with tremendous opportunities. There have been previous attempts to initiate exchanges between South Korea and the African continent but visible limitations existed due to a lack of an in-depth local information system in addition to the sole focus on one-off businesses, which did not bring any long-term benefits to either sides. As a result, in order to make improvements regarding the past limitations, the Institute of Euro-African Studies at Hanyang University began its research on Nigeria, Algeria, and Tanzania, the countries that could be sustainably connected and produce synergistic effects with South Korea. These nations were selected based on various criteria such as the Human Development Index (HDI), the Foreign Direct Investment (FDI), and the Official Development Assistance (ODA). (Left) Professor Kim Sung-soo (Department of Political Science and International Studies) at the opening ceremony of Tanzania Embassy in the Republic of Korea and investment briefing session with (right) the Minister of Foreign Affairs and Trade of Tanzania, Augustine Mahiga, and (center) the embassador of the Tanzania Embassy in the Republic of Korea, Matilda Swilla Masuka. (Photo Courtesy of Hanyang University Institute of Euro-African Studies) Nonetheless, Kim and his team at the Institute of Euro-African Studies faced some difficulties when they visited the African nations in the beginning. One of the difficulties was that it took time to persuade the people they met in Africa because some expected to become beneficiaries rather than cooperative partners to take actions together with. However, there were benefits as well because as representatives of the educational institution, there were no challenges in meeting business groups and government officials to talk about the project. As an ongoing project until 2023, it will concentrate on sharing various Korean cultural, economic, and educational know-hows with Africa. The ultimate goal is to create a coexisting network for South Korea and African nations through public diplomacy. Professor Kim Sung-soo (Department of Political Science and International Studies) in front of the Hanyang University Institute of Euro-African Studies, the key institute selected for the current public diplomacy project in Nigeria, Algeria, and Tanzania. Kim hopes that the Hanyang University Institute of Euro-African Studies will be the leading platform to carry out public diplomacy in African nations. He concluded by encouraging students to pay more attention to the newly emerging continent and believes that exchanging culture and ideas will be beneficial to both South Korea and Africa. Seok Ga-ram carpethediem@hanyang.ac.kr Photos by Park Guen-hyung

2018-10 29

[Academics][Researcher of the Month] New Technology of Patterning the Perovskite

Have you ever seen the integrated circuit in your device? A part of it, which resembles a tiny wafer, is called wafer. Before coming to be a part of our smartphones, laptops, and televisions, the wafer goes under a complex set of procedures, one step of which is lithography, also known as patterning. As the name suggests, lithography is imprinting patterns on a clean film or substrate. The traditional way of doing this is called photolithography, which, simply put, involves placing a photoresist mask with the pattern on top of the wafer and shooting a UV light so that the pattern is etched onto the wafer. However, there exists a problem with this method. In the field of solar cell and Light Emitting Diode (LED), a material that has been under spotlight for many years for its overpowering efficiency is named perovskite. However, this material is extremely unstable when met with water. Thus, in order to use it, it needs to be surrounded by polymer to make a composite. The problem lies in that the composite is almost impossible to stabilize and pattern using the traditional photolithography. Nevertheless, Professor Kang Young-jong (Department of Chemistry) made this possible, inventing a new patterning technique called, Size-exclusion lithography. A diagram of Perovskite and Size-exclusion lithography (Photo courtesy of Kang) What is Size-exclusion lithography? What Kang did was coat the wafer with a mixture of two materials, polymer and perovskite. When the wafer is shot with UV light, polymer as well as perovskite nanoparticles are created. The polymer starts to entangle in a chain shape, called a polymer mesh. It first increases in size but soon starts shrinking – on the other hand, perovskite nanoparticles become larger. Consequently, the nanoparticle escapes the polymer mesh and re-arranges itself, arriving at a phenomena called Size-expansion. Using this phenomena, Kang was able to make the pattern arrange by itself on the wafer, without the need of photolithography. This new technology is significant in many ways. First of all, what was deemed impossible (patterning of perovskite composite) was made possible. Also, since the process of etching is no longer necessary, the wafer-making process will be simpler. Moreover, when it comes to stability, the perovskite composite can edure a full day dipped in boiling water, as it had previously lost its function after only a couple of hours, mid-air. Kang Young-jong (Department of Chemistry) invented a new technology with better stability and a simpler process through this research. The remaining task Although a significant discovery, Kang says there are many more hurdles to jump over for an actual device to be complete. For that reason, there was recently a joining of a professor specializing in such a field, and the team is working together on developing LED using perovskite, ultimately leading to a completion of an actual device. Kang evaluates this finding as “ultimately, a contribution to the development of LED.” Kang gains the energy to keep on researching from his various hobbies. He enjoys the final outcome of a continuation of a hard process, and the future for his research seems bright. Lim Ji-woo il04131@hanyang.ac.kr Photos by Park Geun-hyung

2018-10 24

[Academics]A New Way to Delete Memory Through Light at Unprecedented Speed

Research on using light to delete information was already in existence, but it had one huge drawback. In the past, strong and long exposure to a light beam was crucial in order to erase information. Therefore, a need for a new memory technology that allowed eliminating information even with weak intensity of visible rays that flashed for shorter periods of time was in need. Professor Jang Jae-young (Department of Energy Engineering) has led the way to effectively eliminate stored information, contributing to power consumption savings for the better. News H interviewed professor Jang Jae-young (Department of Energy Engineering) on October 19th, 2018. With the newly developed memory, it is possible to write and erase information through exposing light, instead of inflicting voltage. This is a phenomenon called the photoinduced recovery. In terms of memory, there are volatile and nonvolatile memory. Jang looked into nonvolatile memory, which is memory that can retrieve stored information even when the power is off. While most of the findings aforementioned were research results from last year, the significance of the findings in this year’s thesis published on August 28th on ACS Nano is that it is now possible to delete information by exposing weak intensity of a visible ray in a relatively brief period of time. 1 mW/cm2 of faint light that can even be compared to fluorescent light needs to be flashed for just a second to do the job of deleting information. Professor Jang Jae-young (Department of Energy Engineering) showed us his lab where all the experiments are done inside the 'glove box,' which is filled with nitrogen. The distinctive feature in Jang’s research is in the material that he used which are called quantum dots. He newly used quantum dots as the floating-gate layer of a memory, which is the inner circle that operates the memory and retains or deletes information. The definition of quantum dots is a semiconductor made into a nanometer-size. Because the main body of quantum dots does not melt in solvent, quantum dots are usually capped with small molecules called ligands. Jang introduced three different types of ligands in the experiment to tune the performance of memory devices. Specifically, by incorporating ligands containing fluorine, it derived the best result in terms of its ability to eliminate information. To briefly summarize the point, a memory that used floating-gate layers with quantum dots that contained fluorinated ligands made it possible to delete information in one second of flashing 1 mW/cm2 intensity light. On the other hand, other than being nominated as one of the outstanding research papers of the week in Hanyang University, Jang received the “Rising Academic Award” hosted by the Polymer Society of Korea from October 10th to 12th. The potential recipients of the award were limited to researchers who had not passed seven years since the earning of their doctorate degree. “I find this award very honorable. It’s like the rookie of the year award for actors. While you may receive many awards throughout your research life, you don’t get much of a chance to win an award when you’re a rookie.” Jang emphasized that the College of Engineering should strive to develop technology that will benefit the future generations and humanity for all. He also shared his hope that the widespread use of nanomaterials like quantum dots will bring about optimal results in creating storing devices for the next generation of electronic wearables in the future. Kim Hyun-soo soosoupkimmy@hanyang.ac.kr Photos by Kang Cho-hyun

2018-10 08

[Academics][Excellent R&D] The Korean Imitation Game

Until just several decades ago, warfare was in the form of military, unlike today's contemporary world where the international society puts heavy emphasis on global peace. This, in other words, means the use of military force has become limited and instead, the role of information warfare has now become a crucial factor in defedning a country's existence. Professor Yoon Dong-weon (Department of Electronic Engineering) and the Signal Intelligence Research Center (SIRC) are now in charge of the frontline of signal intelligence alongside the Defense Acquisition Program Administration (DAPA). The Signal Intelligence Research Center (SIRC) A specialized research center refers to those who have been appointed in grafting the high leveled technology of the private sector into technology that is developed and used for the purpose of national defense. It is DAPA, which designates the specialized research centers, appointing the SIRC as the one responsible for signal intelligence until 2020. Being a six-year project, and being funded with 12.5 billion won in total, the SIRC is the first specialized research center to have a recurring demand troop. (From left) Professor Yoon Dong-weon (Department of Electronic Engineering) and Ahn Seong-jin (Department of Electronic Engineering, Master's Degree) are analyzing the signal codes. The center mainly consists of four laboratories, with each serving its own purpose: signal collection technology, signal processing technology, voice information technology, and code reconstruction technology. With Hanyang University taking the lead in the overall research, 17 schools and 34 professors in total are currently participating. Being a six-year project divided into mainly two stages, the center has successfully completed the first part of research and has moved on to the second stage in 2018. The Importance of Signal Intelligence (SIGINT) According to Yoon, who is the current director of the SIRC, one the most fundamental concepts of information warfare is signal intelligence, which is intelligence-gathering by the interception of signals. National intelligence is mainly divided in to two categories, which are tactical intelligence and strategic intelligence. Tactical intelligence refers to short-term information, whereas strategic intelligence focuses more upon long-term information. From this perspective, strategic intelligence is a comprehensive national intelligence that has to be studied and researched persistently. Consisting of imagery intelligence (IMINT), human intelligence (HUMINT), open-source intelligence (OSINT), and signal intelligence (SIGINT), it is SIGINT that is being mainly focused upon in the contemporary society and has to be studied in order to preserve the existence of a nation from a strategic level. Yoon is explaining the importance of signal intelligence in the contemporary society and how it should be persistently studied in order to defend the nation's existence. “Signal intelligence is once again divided into communication intelligence (COMINT), electronic intelligence (ELINT), and foreign instrumental signal intelligence (FISINT). Out of the three, it is communication intelligence that the research center is mainly focusing upon. It is easier if one thinks of the movie ‘The Imitation Game (Morten Tyldum, 2014)’ and how signal intelligence is used in defending the existence of the country,” explained Yoon. Yoon also mentioned that although we currently live in an era of peace, it is important to keep track of potential threats and consistently prepare ourselves, given that we are surrounded by countries that have strong abilities of signal intelligence. “SIRC will always lead an edge in defending national security and signal intelligence,” ended Yoon determinedly. Choi Seo-yong tjdyd1@hanyang.ac.kr Photos by Lee Jin-myung

2018-10 08

[Academics][Researcher of the Month] Increasing Charging Efficiency in Lithium-ion Battery

When a new phone launches, one can visibly notice that one of the main improvements are longer battery life with a faster charging speed. Needless to say, batteries are a crucial part of an electronic device and there are continuous developments made in order to increase their efficiency. Likewise, Professor Park Won-il (Division of Materials Science and Engineering) carried out experiments and research on the negative electrodes of lithium-ion batteries to improve the efficiency of battery charging. Along with various others, Park wrote a thesis with the title “Controlling electric potential to inhibit solid-electrolyte interphase formation on nanowire anodes for ultra fast lithium-ion batteries.” Professor Park Won-il (Division of Materials Science and Engineering) talks about how the experiments were carried out on the lithium-ion batteries. The lithium-ion battery is well-known as it is included in most wireless devices such as electric cars. The lithium-ion battery contains both a cathode, which is the positively charged electrode for batteries and an anode electrolyte, a negatively charged electrode. Park’s research was focused on the materials of the anode electrolyte. When a battery is running, a potential drop occurs between the cathode and electrolyte anode. Due to this drop, a solid-electrolyte interphase layer forms on the active material surface. Park focused on researching the active material that goes in the anode electrolyte in order to increase battery charging efficiency. Originally, the basic material utilized was graphite, which has the capacity of 360 mAh/g (milliampere hours per gram). However, to follow the demand of a higher capacity material, Park decided to implement Nickel Silicide, the capacity of which is 1300 mAh/g, four times that of graphite. Figure C shows how Nickel Silicide (NiSi) was utilized in order to inhibit solid-electrolyte interphase. (Photo Courtesy of Park) In the thesis, a three-dimensional macro graphite nano tube model to control the electric potential and prevent solid-electrolyte interphase utilizing Nickel Silicide was introduced. Solid-electrolyte interphase occurs when the potential drop, established between cathode and anode, drives to decompose the electrolyte and form a solid-electrolyte interphase layer. This enabled the potential drop to take place on the potential sheath instead of the active material surface. After countless experiments, up to two thousand, utilizing Nickel Silicide showed outstanding performance under 20C, taking less than a minute to fully charge. The capacity of a battery is generally rated at 1C, which means that it takes one hour to fully charge. (From left) Chang Won-jun (Division of Materials Science and Engineering, '16) and Professor Park Won-il (Division of Materials Science and Engineering) mentioned that the experiment was carried out more than two thousand times. When asked how long it took to complete the experiments, Chang Won-jun (Division of Materials Science and Engineering, ’16), who led the majority of experiments, said that they began in June of 2017, and their thesis submission and revision started at the end of December that year. Although the repetitive experiment proved that the performance of lithium-ion batteries utilizing Nickel Silicide was outstanding, deriving the precise evidence proving that solid-electrolyte interphase took place outside the surface was the task that took seven to eight months. Park concluded more research is still needed. In the current state, it will take more time for the newly developed structure to work. However, he hopes for the concept to be utilized on the betterment of lithium-ion batteries and become a breakthrough for battery charging in the future. Seok Ga-ram carpethediem@hanyang.ac.kr Photos by Park Kuen-hyung

2018-09 23

[Academics]Big Data Suggests a New Paradigm in Social Problem Solving

The first time Google attempted at predicting the outbreaks of flu using big data, the result was a failure. In their second attempt, however, by collaborating with social scientists, they produced a successful result. This particular incident shows the importance of fusion research. Professor Cha Jae-hyuk (Department of Computer Science and Engineering) and his team also stand on this point through their research in big data-based real-time social environment monitoring and simulation system development. The aim of the research was to combine the traditional social science and big data process technology to allow new insights of social problems. Cha Jae-hyuk (Department of Computer Science and Engineering), September 22, at Office of Information and Communications Technology Services. Today’s society forms one big network in which big data plays a crucial role in organizing complex social problems. Among these, Cha focused on three social problems. First, he studied the relationship between the welfare for the disabled and the mobility of the disabled. Big data processing made it possible to keep track of the mobility pattern of the disabled and the entailing satisfaction towards life. Cha found that it is how many places they visit, not how far they travel, that determines their satisfaction. This discovery will help suggest new and better paradigm in welfare for the disabled when it comes to their transportation. Second, he studied the response of the government and the society to the infectious diseases. Through five mediums of news, he found that for Middle East Respiratory Syndrome (MERS), the official response of the government and that of the society were vastly different. With more data, Cha intends to use it as an evaluation tool for later responses. Last, Cha collected the data via social networking sites about how the anxiety in the society changes depending on time and region. He tried to look into its relationship with the social problems and found slight changes in the public sentiment. With further data, Cha plans to relate it with social problems such as suicide rate. Cha advised to be interested in the convergence with other disciplines and in new keywords. Cha anticipates that the combination of social science and big data technology could help draw more accurate interpretation of the social phenomena. In this regard, the research means more than the result itself. More importantly, it shows a hopeful prospect of the fusion research. Cha believes the three studies have shown that synergy effect of the fusion research can bring better results and solve bigger problems. As he suggests, fusion research “can be the new strength” in our society. For that reason, Cha has set two goals. One is to establish a data processing system integration platform. The platform will be open to anyone to freely access the research results and reenact using the program. Another goal is to suggest a fusion research methodology of how the usage of fusion research may bring out a better result. This is why Cha also encourages the students of Hanyang to engage themselves in the fusion research as well. “Take an active interest in converging with other disciplines.” Cha advises, “be interested in, participate in, and listen to the other newly appearing keywords in our society.” Lim Ji-woo il04131@hanyang.ac.kr Photos by Lee Jin-myung

2018-09 17

[Academics]The Development of Multi-Sensory Exhibitions

Professor Ryu Ho-kyung (Department of Arts and Technology) is currently working on a technological program that allows the multi-sensory exhibition in places such as art, science, and historical museums. Having planned the project for three and a half years, it has been roughly six months since Ryu and his team initiated the project. Collaborating with the Gwacheon National Science Museum (GNSM), the team is planning to exhibit its first results in September of 2019. From left, Jung Dong-hoon, Professor Ryu Ho-kyung, Jin Sang-min, and Lee Seung-jung are working to develop a multi-sensed exhibition, which allows spectators to experience the exhibition not only in a visual sense, but also in audible and tacticle senses. The term 'multi-sensory exhibition' refers to an exhibition that does not provide only visual experience, but also allows its spectators to hear and feel the displayed works. Formed with four research students, Jin Sang-min, Lee Seung-jung, Jung Dong-hoon, Min Bo-kun (Department of Arts and Technology, Master’s Program), and two professors, Ryu and Kim Ji-eun (Department of Technology and Innovation Movement), the team has divided its research plans into four stages. The first stage is to develope a framework and prototype for the multi-sensory exhibition, followed by the next stage of collecting and analyzing the data based on the reactions of spectators. Then, applying an actual multi-sensory exhibition at the GNSM is in order, after which the final stage of developing a guideline for applications to other site operations comes. Proceeding with the early stage of development, the team is currently focusing on developing a prototype of a multi-sensory exhibition, which requires the convergence of various fields of technology. “Psychological elements, design elements, and engineering design are the three main elements necessary for the project,” explained Ryu. With each member of the team having his or her own specialty, they have managed to incorporate three types of technology to actualize the different senses of spectators. As for the visual aspect, the team is planning to shoot AI (artificial intelligence) visions upon a half-transparent screen, which would play 3D vision throughout the exhibition. According to Jung, it would enable spectators to interact with the exhibited materials, similar to the movie ‘Night at the Museum (2011).’ As for hearing sense, directional speakers are under development. The speakers can only be heard in the area in which they are targeted, which prevents the whole museum from being sabotaged by multiple sources of sound. Ryu gave an example of how spectators would be able to hear the sound of a crying dinosaur only in the front of the exhibited model, once the speakers are applied. Lastly, for tactile sense, vibration mats will be applied, which are sound-induced vibration. These mats are designed to react to the vibration of sound, which enables them to be activated in accordance with the directional speakers and provide tactile aspects. From left, Jin, Lee, and Jung are explaining the technologies that are applied in the development of multi-sensory exhibitions. This project has its significance in that it has the main purpose of ‘returning to the public.’ Applying technology in an area that is closely related to and enjoyed by the public was the key importance for Ryu. This whole project allows the public, especially students, to have an improved experience at museums. Once applied to all museums, multi-sensory exhibitions would allow the spectators to become investigators that actually interact with the displayed materials. For this reason, Ryu and his team are also focusing on lowering the price exhibitions, so that they can be applied to all museums at an affordable cost. “Many students these days tend to think of research and development as something that is distant and unapproachable. However, research is something that is close to our everyday lives and can be used for solving real world problems,” maintained Ryu. He also added that those who would like to participate in this project should contact Jung by e-mail (Rapido300@gmail.com). Although still in its initial stage, there is no doubt that multi-sensory exhibitions would provide a completely new experience for museum-goers. Choi Seo-yong tjdyd1@hanyang.ac.kr Photos by Kang Cho-hyun