Regional Security Order and South Korea-Japan Relations

( Eunil Cho ) 한국국방연구원 2022 The Korean Journal of Defense Analysis Vol.34 No.4

This preliminary study focuses on the change in the regional security order caused by the U.S.-China competition and its impact on South Korea-Japan relations. The ongoing U.S.-China relations has expanded beyond the discussion of cooperation and competition between existing and emerging powers, as well as the debate over the influence and resilience of the U.S.-led liberal international order. The significance of the U.S.-China competition in the security order in East Asia depends on whether China will accept the existing U.S.-led bilateral alliance system and take a status quo attitude. As a result, the U.S. allies, South Korea and Japan, need to respond sensitively to the changing nature of the security order. In this vein, this study explains the East Asian security order as elements of power structure, institutions, and actors. In addition, it explains the emergence of China as a new hegemonic power due to the U.S.-China competition, the hub-and-spokes system changes according to the U.S. rebalancing policy, and the emergence of Trumpism. Through this, the author argues two claims. First, the change in U.S.-China relations has led to different expectations between Seoul and Tokyo for cooperation with the U.S., which has hindered bilateral cooperation between them. Second, divergent views on China also hinder South Korea-Japan cooperation. Through the Senkaku dispute between Japan and China and the missile deployment dispute between South Korea and China, the two countries later showed different directions in their policy toward China. In the current competitive situation, restrictions on South Korea-Japan relations are inevitable. However, if the opportunity to promote security cooperation between South Korea and Japan is sought, it will be able to show the cooperation of middle power countries that can develop the security order to mitigate the intensity of U.S.-China competition.

Rare B decays at BaBar

Eunil Won 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.2

Recent results in rare B decays are presented. Topics include purely leptonic, radiative, and b to sl+lက decays. Results are based on e+eက annihilation data collected with the BaBar detector at the (4S) resonance during the years 1999-2002 at the PEP-II asymmetric-energy B factory at SLAC.

The Function of hi and a Typology of Voice

Eunil Kim 담화·인지언어학회 1998 담화와 인지 Vol.5 No.1

Leveraging Software-Defined Wireless Network (SDWN) with LISP for Mobility Management

Eunil Seo(서은일),Tai-Myoung Chung(정태명) 한국통신학회 2017 한국통신학회 학술대회논문집 Vol.2017 No.6

Methane Production of Food Waste Anaerobic Digestion Recovered from NaCl Inhibition by Water Dilution

( Eunil Cho ),( Qiyong Xu ),( Danling Xia ),( Jae Hac Ko ) 한국폐기물자원순환학회 2021 한국폐기물자원순환학회지 Vol.38 No.4

One of the significant challenges of food waste anaerobic digestion (AD) is the negative effect of high NaCl concentrations. This study investigated the effects of NaCl fluctuation on the methane generation of food waste AD under thermophilic and mesophilic conditions. Particularly, the effects of the shock loading of high NaCl concentration with/ without water dilution treatment were investigated. Generally, the methane generation decreased with increasing NaCl concentration. In addition, the sensitivity of the thermophilic AD to NaCl concentrations (5-10 g/L) was higher than that of the mesophilic AD. Furthermore, with an increase in the NaCl concentration from 0 to 30 g/L, the accumulative methane volumes of the thermophilic reactors decreased from 210 to 45 mL/gVS, and those of the mesophilic reactors decreased from 265 to 67 mL/gVS. Additionally, the pH of digestate decreased with increasing NaCl concentration. In contrast, the concentrations of the chemical oxygen demand and volatile fatty acid increased with increasing NaCl concentration. These results indicated that a shock loading of NaCl significantly reduced methane generation. In addition, the methane generation rates could be recovered up to 64-72% using water dilution as a remedial measure. Further investigation using 16S rRNA analysis revealed that the predominant genus of the methanogens shifted from Methanoculleus to Methanosarcina after the removal of the osmotic stress using water dilution.

Low sea surface salinity in the East Sea during the last glacial maximum: review on freshwater supply

Eunil Lee,Seungil Nam 한국지질과학협의회 2004 Geosciences Journal Vol.8 No.1

Low sea surface salinity event in the East Sea during the LGM (last glacial maximum) has been critically and thoroughly reviewed based on previous studies, but freshwater source for this low paleosalinity still remains to a great extent questionable. This paper presents that the Korea Strait was partially open during the LGM, transporting the paleo-Water (0.5-2.1×1012 m3/yr) to the East Sea. The paleo-Water, presumably a mixture of high amount of freshwater and the paleo-Tsushima Current, might not be enough to explain the decrease of sea surface salinity (SSS) in the surface layer (79.75×1012 m3) of the LGM East Sea. Assuming that the paleo-Water is entire freshwater, it could only lower less than 1.1‰ of surface salinity. Moreover, differences in SSS (between 20‰ of the LGM and the present 34‰ in the East Sea) and planktonic foraminiferal d18O (between the regional East Sea and the global Pacific Ocean during the LGM) are approximately 14‰ and 3.8-4.1‰, respectively. According to general trend that 1‰ salinity decrease correponds to about 0.5‰ lowering of d18O (Broecker, 1989), 3.8-4.1‰ decrease in d18O could lower 7.6-8.2‰ in salinity, resulting in 25.8-26.4‰ of the SSS in the LGM East Sea. This SSS (25.8-26.4‰) is still much saline than 20‰. Furthermore, about 5.8-6.4‰ of salinity difference needs to be explained, and further indicates freshwater dilution in the LGM East Sea. Therefore, these semi-quantitative calculations evidence additional freshwater supply to the East Sea, lowering sea surface salinity during the LGM. Potentially additional source for freshwater might have been the Amur River inflow into the East Sea.

시호 종자의 특성 및 발아촉진 방법 연구

Eunil Lee,Seok Hyeon Kim 韓國作物學會 1996 Korean journal of crop science Vol.41 No.3

시호 종자의 발아율을 증가시키기 위한 방법과 종자의 특징을 연구하기 위하여 본 실험을 수행하였다. 시호의 발아에 유리한 온도는 20℃ 이며, 호르몬 처리나 기타 물리화학적 처리에 의해 발아율은 크게 증가되지 못했는데, 15℃ 에서 발아시킬 경우 50~200 ppm의 GA3 을 처리했을 때 발아율이 2배 이상 증가하였다. 또한 같은 온도에서 102 ~103M의 KNO3 을 처리한 경우에도 발아율은 3배 이상 증가하였다. 그러나 20℃ 이상에서는 강력한 저해 효과를 나타내었다. 시호의 leachate를 상추의 종자에 처리했을 경우 발아율의 변화가 거의 없었으므로 시호의 종자에는 발아저해제가 거의 없는 것으로 생각된다. 해부현미경과 주사전자현미경으로 종자의 배와 주공을 관찰한 결과 배가 있는 것과 없는 것의 비율이 거의 50/50이며 주공 자체에는 문제가 없으므로 시호의 종자 발아율이 낮은 것은 근본적으로 배가 결여된 종자가 많기 때문인 것으로 생각된다. The experiment was conducted to determine the seed characteristics and preferable methods to enhance the seed germination rate in Bupleurum falcatum. The optimum temperature for the seed germination of Bupleurum falcatum is 20~circC . Any significant promoting effects were not found in seed germination with hormone treatments and physical methods. At 15~circC , prechilling combined with 50~200ppm of GA3 treatment raised germination rate by 2 times of control ones. The most positive effect was observed in the treatment of 10-2 ~10-3 M potassium nitrate only at 15~circC for 12 and 24 hours. The leachate of Bupleurum falcatum didn't inhibit the germination of Lactuca sativa, showing almost 100% of germination rate, which is suggested that no inhibitors contained in the seeds of Bupleurum falcatum. Observation of embryo conditions under stereoscopic microscope showed that the ratio of seeds with or without embryo is almost 50/50. The results suggested that the lower rate of germination in Bupleurum falcatum was caused by embryolessness of seeds.

인간 피부색의 다양성과 지역성의 기원

이은일(Eunil Lee) 한국창조과학회 2023 Origin Research Journal Vol.3 No.2

피부색의 다양성은 멜라닌 세포 외에도 다양한 세포들과 여러 요인들이 관여하며, 멜라닌과 관련된 유전자만도 169개를 발견하였다. 따라서 유전자의 조합에 따라 매우 다양한 피부색을 가질 수 있다. 멜라닌은 어두운 색과 밝은색 두가지 종류의 멜라닌이 있으며, 멜라닌이 뭉쳐있는 것을 멜라노좀이라고 하는데 그 크기와 분포에 따라 피부색이 다르게 보인다. 유전적 조합에 따라 피부색은 매우 다양해질 수 있으며, 또한 돌연변이에 의해 멜라닌 생성과 분포가 억제된다면 피부색은 밝은 쪽으로 가게 된다. 피부색은 다양성의 일부일뿐 사람을 구분하는 기준이 될 수 없으며, 피부색에 따른 인종 구분은 전혀 과학적 근거가 없다. 바벨탑 사건 이후 인류가 흩어지면서 유전적 풀이 감소됨에 따라 피부색의 다양성이 감소하였을 것이며, 특정 피부색에 대한 선호도에 따라 특정 피부색이 그 지역의 주된 피부색으로 정착하게 되었을 것이다. 진화론자들은 피부색이 이동에 따른 자외선 노출의 변화에 따라 어두운 피부색이 밝은색으로 진화하였고, 또한 그렇기 때문에 지역 별로 피부색의 분포가 달라졌다고 주장한다. 그러나 자외선 노출에 의한 피부색의 변화는 유전될 수 없으며, 어두운 피부색이 자외선 노출에 의한 비타민D 형성에 문제가 있는 것도 아니기 때문에 이런 주장은 과학적 근거가 없다. The diversity of skin color involves various cells and other factors besides melanocytes, with 169 identified genes related to melanin. As a result, a wide range of skin colors can be attributed to genetic combinations. There are two types of melanin: dark and light. Skin color appears differently based on the size and distribution of melanin clusters known as melanosomes. Genetic combinations can lead to significant variations in skin color. Additionally, if mutations inhibit melanin production and distribution, skin color tends to be lighter. Skin color is just a part of diversity and cannot serve as a basis for distinguishing people. Categorizing races based on skin color lacks scientific basis. After the Tower of Babel incident, as human genetic pools decreased due to dispersal, diversity in skin color likely diminished. Preferences for specific skin colors led to the prevalence of certain skin tones in particular regions. Evolutionary theorists suggest that skin color evolved from dark to light due to change of UV exposure, resulting in varied skin color distributions across regions. However, skin color changes due to UV exposure are not heritable, and the claim that dark skin presents vitamin D synthesis problems due to UV exposure lacks scientific support.

근육 부피 변화에 따른 손동작 분류 알고리즘을 기반으로 한 HCI 시스템의 개발

조은일(Eunil Cho),허정현(Jung Hyun Heo),이정직(Jeongjick Lee),윤영로(Young Ro Yoon) 대한인간공학회 2016 대한인간공학회 학술대회논문집 Vol.2016 No.11

Objective: The aim of this study is to propose alternative method about sensing muscle activity to classify hand gesture. When human act hand gesture, muscles will be contracted or relaxed. So we use ‘Conductive Rubber Cord’ to measure muscle volume change. Background: Different hand gesture shows different muscle volume change. And about same hand gesture shows very similar muscle volume change. Method: We determine 5 kinds of hand gestures and measure muscle volume change. So we suggest a parameter based on muscle volume change measured by conductive rubber cord. The work is based on two facts. One is that hand gesture or motion is controlled by fore arm and the other is that volume change of forearm occurs by doing hand motion. Based on these facts, we assume that a variety of hand gesture results in various volume change of forearm case by case. Results: The sensitivity of the classification used for the 5 kinds of hand gestures was 96.39%. Conclusion: Muscle volume change is not affected by electric signal or feature of human body. So it didn’t need preprocessing for separate parameter from undesirable signals. This means Muscle volume change is more useful than sEMG or other bio signal. Application: The results of this study might help to determine alternative method about sensing muscle activity. And it can be applied to develop controller for virtual-reality system.

An Understanding of the Volatility of Wind Energy Market and Wind Industry Circumstance due to the National Policy

Kim Eunil(김은일),Kim Keon Hoon(김건훈) 한국태양에너지학회 2014 한국태양에너지학회 학술대회논문집 Vol.2014 No.11