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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 Photos by Lee Jin-myung

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 Photos by Kang Cho-hyun