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최희재(Heejae Choi),김도현(Dohyun Kim),송봉섭(Bongsob Song) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
The unified lateral control algorithm for automatic valet parking for various types of vehicles is presented and its feasibility is shown experimentally via field tests for the given parking scenario. With consideration of different types of vehicles and operating conditions, a kinematic vehicle model with design parameters for different maneuvers is proposed and validated using field test data. Furthermore, trajectory generation for forward driving and parking maneuvers is developed and the lateral vehicle controller based on a nonlinear control technique is designed for the vehicle model. Finally the proposed lateral control algorithm is validated via simulations for different types of vehicles and experimentally using a test vehicle through field tests.
越南, 朝鮮과 1860-80년대 淸朝 朝貢國政策의 再調整
崔熙在(Choi Hee-jae) 역사학회 2010 역사학보 Vol.0 No.206
The purpose of this paper is to compare Ngyuan Dynasty Vietnam and Chosun Dynasty Korea in their relations to China, taking into con-sideration Qing China's policies toward tributary states in the 1860-1880's. Conclusions are as follows: Until the late 1870's, the Qing Dynasty rulers tended to evade getting involved in their tributary states' foreign relations, especially with the Western powers. For they were afraid that such entanglements might worsen their own relations with the Western countries. When such countries as England, France and America asked China's assistance for their efforts to 'open' Korea, Chinese authorities continued to refuse, stressing that it was Beijing's principle not to interfere with tributary states' domestic politics and foreign relations. Although Vietnam stopped sending tributary envoys to Beijing beginning in the early 1850s through 1868, while French aggressions there continued to be intensified, China did not take any actions, nor expressed special concerns. As a matter of fact, China then had no much reliable information about the Southeast Asian country, since the latter despite their worsening relations with France did not take any active measures to ask for Beijing's help. From around 1879 when Japan officially annexed Liuqiu Kingdom, however, China began to search actively for new policies towards the tributary states. There arose vociferous calls of Qing officials and literati for hardline policies to protect the remaining tributaries such as Vietnam and Korea. Such officials and diplomats as Ho Ruzhang, Huang Zunxian, Zeng Jize and Xue Fucheng proposed various ideas to rearrange China's traditional relations with those countries to fit the Western-inspired new world order, underlining their strategic importance to their national security. On the other side, some Koreans advocated for the strengthening of Seoul-Beijing relations in anticipation of Chinese help for their countries' modernization. Consequently more active measures came to be undertaken to sustain or strengthen Chinese influence upon Vietnam and Korea, even amid the rising French and Japanese repercussions. With the defeat in the Chinese-French War(1884-85), the Chinese efforts to keep Vietnam as its tributary failed. In contrast those efforts in Korea to reshuffle their bilateral relations in the modem context appeared to bear significant fruit for a while, to their eyes, since China could get a rather firm control upon Seoul, However, the Chinese-Japanese War(l894-95) hit a fatal blow upon the Beijing efforts to reshuffle the tributary system. Here noteworthy is that in that process, Koreans' repercussions were increasing since such Chinese moves of intervention were against their anticipation of assistance.
최희재 ( Heejae Choi ) 한국프랑스어문교육학회 2021 프랑스어문교육 Vol.74 No.-
본 연구는 대학 전공어 교육을 활성화 시킬 수 있는 방안을 모색하기 위한 기초연구로서, 교수-학습의 중심에 있는 학습자의 내적 요인, 그 중에서도 특히 외국어 교육의 성공을 결정하는 가장 핵심적인 요인 중 하나라고 밝혀진 학습 동기가 저하되는 원인을 집중적으로 조사ᆞ분석하는 것을 목표로 한다. 이를 위해, 국내 한 대학의 프랑스어 전공생 72명을 대상으로 설문조사를 실시하였고, 그 결과, 대학전공 프랑스어 학습자들의 주요 탈동기 요인은 ‘학습자 요인’, ‘교수방법 요인’, ‘환경 요인’, ‘교수자 요인’ 순으로 나타났다. 또한 성별, 능력수준, 학습기간에 따른 차이를 검증한 결과 성별과 프랑스어 능력수준은 탈동기화와 유의미한 상관관계가 있는 것으로 나타났으나, 학습 기간은 그렇지 않음을 확인할 수 있었다. Cette étude a pour objectif d'analyser les facteurs qui amènent les apprenants à se démotiver dans leur apprentissage, et ainsi de contribuer à l'amélioration de l'enseignement du français pour les étudiants de licence d'études françaises dans les universités coréennes. Après avoir préalablement défini la notion de « démotivation » dans l'apprentissage d'une langue étrangère et fait le point sur les recherches précédentes menées à l'étranger et en Corée, nous effectuons une enquête auprès de 72 étudiants ayant pour majeure d'études le français pour analyser les facteurs de leur démotivation. Ces analyses nous amènent enfin à élucider son origine : la première source influençant le plus leur démotivation provient des apprenants eux-mêmes, la deuxième est liée aux méthodologies d'enseignement, la troisième à l'environnement d'apprentissage et la dernière aux enseignants. Le point intéressant est que si le sexe et le niveau de compétence sont en corrélation avec leur démotivation, la durée d'apprentissage, elle, ne l'est pas.