코로나19 팬데믹 전후 서울 5성급 호텔 내국인 고객 니즈 변화 연구

정대호,최종두 한국호텔외식관광경영학회 2023 호텔경영학연구 Vol.32 No.5

Hotel customers increasingly prioritize meaningful and satisfying experiences throughout their service journey. In response, hotels craft customer experiences anchored in their unique service philosophies, continually aiming to enhance customer value at every touch-point of the journey. The unforeseen challenges brought about by the COVID-19 pandemic have had a significant impact on the hotel industry, particularly in five-star hotels in Seoul, which traditionally relied on a foreign guest rate of 60 to 80%. Consequently, these premier establishments have pivoted to a ‘staycation’ strategy tailored for domestic audiences as a countermeasure to the pandemic’s repercussions. This research delves into the evolving preferences of domestic clientele at five-star hotels in Seoul in the post-pandemic landscape. Leveraging online reviews from TripAdvisor, this study employed sentiment analysis and topic modeling techniques for a comprehensive text mining analysis. Preliminary findings underscore a consistent uptick in ‘staycation’ preferences among domestic patrons subsequent to the pandemic onset. Drawing from these insights, it becomes evident that top-tier hotels in Seoul must amplify their ‘staycation’ strategies and recalibrate the customer experience paradigm. By astutely recognizing and adeptly catering to the dynamic expectations and needs of domestic guests, hotels can pave the way for heightened customer value and fortify enduring customer relationships.

On the Structure and Interpretation of WH - less WH - Questions in Korean

정대호 사단법인 한국언어학회 2000 언어학 Vol.0 No.27

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On the Representation and Operation of WH-Questions

정대호 한국생성문법학회 2000 생성문법연구 Vol.10 No.2

터보부호의 오류확률 분산값을 이용한 효율적인 반복중단 알고리즘

정대호,심병섭,임순자,김태형,김환용,Jeong Dae ho,Shim Byoung sup,Lim Soon Ja,Kim Tae hyung,Kim Hwan yong 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.10C

Turbo code, a kind of error correction coding technique, has been used in the field of digital mobile communication systems. And it is well known about the fact that turbo code has better the BER performance as the number of decoding iterations increases in the AWGN channel environment. However, as the number of decoding iterations is increased under the several channel environments, any further iteration results in very little improvement, and it requires much delay, computation and power consumption in proportion to the number of decoding iterations. In this paper, it proposes the efficient iterative decoding stop criterion algorithm which can largely reduce the average number of decoding iterations of turbo code. Through simulations, it is verifying that the proposed algorithm can efficiently stop the iterative decoding by using the variance value of error probability for the soft output value, and can largely reduce the average number of decoding iterations without BER performance degradation. As a result of simulation, the average number of decoding iterations for the proposed algorithm is reduced by about 2.25% ~14.31% and 3.79% ~14.38% respectively compared to conventional schemes, and power consumption is saved in proportion to the number of decoding iterations. 터보부호는 디지별 이동통신 시스템에서 사용되는 오류정정 부호화 기법의 일종으로써 반복복호가 진행됨에 따라서 AWGN 채널 환경에서 BER성능이 향상된다는 것은 잘 알려진 사실이다. 그러나 다양한 채널 환경하에서 반복복호 횟수가 증가하면 무의미한 반복이 이루어져서 복호하는데 필요한 복호 지연시간과 계산량이 증가하게 되고 전력소모 또한 커지게 되는 단점을 가진다. 따라서 본 논문에서는 터보부호의 평균 반복복호 횟수를 크게 감소시킬 수 있는 효율적인 반복중단 알고리즘을 제안한다. 제안된 반복중단 알고리즘은 고정된 반복 횟수 이전에 반복복호를 효율적으로 중단시킬 수 있는 기법으로써 연판정 출력값에 대한 오류확률의 분산값을 중단조건으로 이용하여 BER성능의 손실없이 평균 반복복호 첫수를 크게 감소시킬 수 있음을 확인하였다. 모의실험 결과, 제안된 알고리즘의 평균 반복복호 횟수는 HDA 알고리즘과 비교하여 약 2.25%~14.31% 정도의 감소효과를 나타냈으며 CE 알고리즘과 비교하여 약 3.79%~14.38% 정도의 감소효과를 나타내었다.

새로운 블록 인터리빙 방법을 적용한 터보 부호의 Flattening Effect의 성능개선에 관한 연구

정대호,김환용 한국통신학회 2001 韓國通信學會論文誌 Vol.26 No.9

터보 부호는 종료 알고리즘(termination algorithm)과 반복복호 알고리즘(iterative decoding algorithm)을 사용함으로써 AWGN 채널환경에서 BER 성능이 우수한 것으로 알려져 있다. 그러나 터보 부호는 복호과정에서 큰 복호지연을 요구하며 음성 신호를 전송할 때 프레임의 크기가 작아서 성능의 열화가 생긴다. 또한, 높은 SNR에서는 BER 성능의 개선이 없는 Error Floor 현상이 나타나기 때문에 오류정정 능력의 한계에 도달하는 큰 단점을 가진다. Flattening Effect는 종료 알고리즘을 사용하는 터보 부호(terminated conditions : TC)보다는 종료 알고리즘을 사용하지 않는 터보 부호(non terminated conditions : NTC)에서 상대적으로 많이 나타난다. 따라서 본 논문에서는 NTC 하에서 터보 부호의 Flattening Effect를 개선시키기 위한 새로운 블록 인터리빙 방법을 제시한다. 모의실험결과, 새로운 블록 인터리빙 방법을 적용함으로써 효과적으로 Flattening Effect를 제거할 수 있음을 알 수 있었다.

한국어의 "어떻게"는 왜 섬제약 적용을 받지 않는가?: 수정 명사 분석

정대호 현대문법학회 2005 현대문법연구 Vol.39 No.-

Korean HOW, i.e. ettehkey, unlike its English counterpart, i.e. how, does not show island effects. There have been several approaches entertained in the literature to account for the island insensitivity:T. Chung`s (1991) VP adjunct analysis and an ECP account; D. Chung`s (1996) nominal analysis and a binding account; Yang`s (1997) d-linking analysis and an ECP account; and D. Chung`s (2000a) predicate analysis and an ECP account. As reviewed in Chung (2000a), the first two analyses bear some critical empirical and/or theoretical problems. Pointing out that the third and fourth approaches also face some empirical and/or theoretical problems, this paper proposes an alternative analysis, a revised nominal analysis, in which ettehkey is decomposed into four sub-parts: e-tte-ha-key,`Det-N-do-adverbializer`. The second element, i.e. -tte, is diagnosed as a nominal element because the first element, i.e. e-, as a determiner, requires a nominal complement and the third element, i.e. -ha, as a transitive verb, requires a nominal complement. The proposed analysis gains support from the morphological paradigms that Korean WH-elements display. Given this revised nominal analysis, the scope of HOW in Korean can be licensed via binding, accounting for the lack of island effects.

한국어 / 일본어 수량사의 약도출적 접근

정대호 현대문법학회 2002 현대문법연구 Vol.29 No.-

WH-Ellipsis and the Theory of Ellipsis

정대호 한국생성문법학회 2003 생성문법연구 Vol.13 No.3

ON THE DISTRIBUTION AND SCOPAL BEHAVIORS OF NUMERAL CLASSIFIER-TO/-(I)NA IN KOREAN

정대호 사단법인 한국언어학회 2002 언어학 Vol.0 No.33

This paper discusses syntactic and scopal behaviors of numeral classifiers (NCs) affixed with particles -to and -(i)na. It will be shown that the two are complementarily distributed in certain constructions. It will be also shown that even when they apparently occur in the same context they do differ in their scope interpretation: NC-to is under the scope of a negative polarity trigger, while NC-(i)na is outside of it. The state of facts leads us to conclude that one is a negative polarity item (NPI) and the other is a positive polarity item (PPI). Scope interaction facts confirm the dichotomy: Quantifiers hierarchically lower than NC-to scope under the licenser of the NC-to (e.g. negation), while those higher than NC-(i)na scope over a possible NPI trigger, if there is any. This paper also observes that, unlike amwu NPIs, which are claimed to be able to have scope over negation and have a free choice reading (Sells 2001), NC-to should be strictly under the scope of negation, hence being a ‘true’ NPI both syntactically and semantically.

Systolic array 구조를 갖는 움직임 추정기 설계

정대호,최석준,김환영 대한전자공학회 1997 電子工學會論文誌, C Vol.c34 No.10

In the whole world, the research about the VLSI implementation of motion estimation algorithm is progressed to actively full (brute force) search algorithm research with the development of systolic array possible to parallel and pipeline processing. But, because of processing time's limit in a field to handle a huge data quantily such as a high definition television, many problems are happened to full search algorithm. In the paper, as a fast processing to using parallel scheme for the serial input image data, motion estimator of systolic array structure verifying that processing time is improved in contrast to the conventional full search algorithm.