28. "Conversion as Zero derivation: Evidence from affix concatenation." Paper presented at NKA 2008 Special Fall Conference. (Oct. 11, 2008, Pusan University of Foreign Studies)

27. “Multimedia Contents: Basic English and E-class." Presentation at the 2nd International Multimedia Contest conference. Gakugei University, Tokyo. (Nov. 03, 2006)

26."Precedence Constraints with Markedness Constraints." Paper presented at Fall Joint Conference of Korean Linguistic Society and The Linguistic Association of Korea. Chosun University (Oct. 21, 2006)

25. “A proposal on Latent Foot." Paper presented at the Winter Symposium of Korea Association of Language Sciences, Pusan National University (Feb. 23, 2006)

24. "Interpretation Mechanism and Qualifications of Interpreters." Paper presented at the Winter Symposium of Korea Association of Language Sciences, Pusan National University (Feb. 17, 2005)

23. "Head Foot Harmony in English Stress." Paper presented at the Winter Symposium of Korea Association of Language Sciences, Pusan National University (Feb. 26, 2003)

22. Compound Stress in English. Special Lecture at the Winter Symposium of The Korea Association of Language Sciences, Pusan National University (Feb. 23, 2002)

21.  OT Analysis of English Stress. Special Lecture at the Fall Symposium of the Society of Modern Grammar. Kyungpook National University [Nov. 17, 2001)

20. "Underlying Schwa in English." Paper presented at 2001 Seoul International Conference on English Linguistics. Yonsei University [Aug. 17, 2001]

19. "Abstract tone in Kibondei verbal morphology: an OT account."   Paper presented at Western Conference on Linguistics (2000), University of California, Fresno (Oct. 27-29.  2000)  (co-work with Minkyung Lee)

18. "Prosodic Subcategorization: An OT Alternative to Lexical Phonology." Paper presented at SICOLC 2000.  Korean Linguistic Society, Korea University. [Aug. 2000]

17. "Noun-Verb Asymmetry in English Stress." Paper presented at SECOL 62. University of Mississippi, Oxford, Ms., [April 06, 2000]

16. Optimality Theory: The Recent Trends. Special Lecture at the Winter Symposium of The Korea Association of Language Sciences, Pusan National University (Feb. 23, 2000)

15. "On Noun-First and Verb-Second in English Stress." Paper presented at LAK (Linguistic Association of Korea) Fall conference. Honam University, Kwangju, Korea (Oct. 30, 1999)

14. "The Noun-Verb Asymmetry in Korean Phonology." Paper presented in Korean Conference, LSA Summer Institute 1999. University of Illinois, Urbana-Champaign (Jul. 25, 1999)

13. "Extrametricality in English." Paper presented in Indiana Phonology Workshop. (Nov. 4, 1998)

12. "Glide formation in Korean: An Optimality Theoretic Analysis." Paper presented in the 4th MCWOP conference. University of Michigan, Ann Arbor. (Oct. 17, 1998)

11. "Aspiration in English: An OT Approach." Paper presentation in the Spring Seminar of English Language and Literature Association, Pusan Chapter. Kyungsung University. (May 9, 1998)

10. "English Vowel Tensing in OT" Paper presentation in the Winter Seminar of South-East Linguistic Society, Pusan National University (Feb, 05, 1998)

09. "Foot Structure and Vowel Quantity Alternation in English." Paper Presentation in the English Language and Literature Association of Korea, Pusan Chapter. Pusan National University (Oct. 10, 1997)

08. "English Stress and OT." Paper presentation in the Winter Symposium of English Language and Literature Association of Korea. Hyatt Hotel, Pusan (Jan. 23, 1997)

07. "Glide formation in Korean: An OT approach." Paper presentation in the Linguistic Society of Korea Conference, Hanyang University (Jul. 6, 1995)

06. On English Stress. Special Lecture in the Winter Symposium of English Language and Literature Association of Korea. Onyang Tourist Hotel, Onyang. (Jan. 26, 1995)

05. On Simultaneous Interpretation between Korean and English. Special Lecture at the Graduate School of Management, Pukyung University. (Sept. 13, 1994)

04. "Metrical Analysis of English Stress." Paper presentation in the Association of English Language and Literature of Korea, Pusan Chapter, Pusan National University. (Oct., 23, 1993)

03. "The place of [continuant] in Korean feature geometry." Paper presentation in the Korean Linguistic Society. Kangwon University (Oct. 16, 1993)

02. "Morphological minimality and phonological rules." Paper presentation in the LSA Summer Institute Workshop on the Interface Areas in Korean Linguistics. The Ohio State University, Columbus Ohio (July, 1993)

01. "Tongue position node in the Feature Geometry: Evidence from Korean." Paper presented in the 17th Minnesota Conference on Language and Linguistics (Oct., 1991)

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