http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 이규석 (검색결과 994 건)
- 무료
- 기관 내 무료
- 유료
-
Cutis Marmorata Telangiectatica Congenita 의 1 예
이규석,정선립 대한피부과학회 1978 大韓皮膚科學會誌 Vol.16 No.2
Cutis marmorata telangiectatica congenita is a very rare congenital vascular anomaly, characterized by vascular mottling of the skin, telangiectasia, hemangioma and skin atropy at birth. The mottling may be generalized or localized in distribution and tends to fade spontaneously with age. A case of CMCT occuring in a 5 months old girl shows localized, reticuhted mottling of the skin and telangiectasia from the left buttock to the leg and s!in atrophy on the left knee. There was no other anomaly except the finger-tip sized capillary hemangioma on the letf scapular area and no change in the course for 8 months.
-
서비스 청사진 기법을 활용한 서비스 프로세스 개선 연구
이규석,김창희,김수욱 청운대학교 관광산업연구소 2015 관광산업연구 Vol.9 No.1
This study suggests a way of improving resort operations process by analyzing the service process of a resort complex with service blueprint analysis. Hospitality industry has been important in the service business and studies in the field have been abundant, however, there were not enough process-level researches on the resort management insofar. In this research, we tried to visualize the service operations process by using service blueprint analysis in order to figure out the factors that reduce the service quality of the resort complex. Then, we also discovered some potential room of improvement in the service process by pointing out seven fail points and three waiting points as well as solutions. We tried to suggest a better solution for the resort complex A to improve its service process by visualizing the overall service cycle, a solution that could be applied to other general types of hospitality facilities. Moreover, service efficiency and the level of service quality could be improved by utilizing the study results in practical service process operation.
-
-
-
고밀도 비선형 광 저장장치를 위한 새로운 부분응답 최대유사도 신호 검출 기술
이규석,이재진,Lee, Kyu-Suk,Lee, Jae-Jin 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.10C
본 논문은 고밀도 광 기록 저장장치에서 오류의 주 원인이 되는 tangential tilt의 문제를 해결하기 위한 개선된 부분응답최대유사도 신호 검출 방법을 제안한다. 틸트의 변화에 따라 등화기 계수와 비터비 디코더의 가지 기준값을 적응적으로 갱신하여 채널의 변화에 잘 적응하도록 하였다. 채널의 변화를 감지하는 요소로 주기적으로 반복되는 데이터의 동기패턴을 이용하여 누적 평균을 취한 후 변화량에 해당되는 등화기 계수값과 비터비 디코더의 가지 기준값을 동시에 갱신한다. 제안된 방법을 적용한 결과 기존의 PRML 검출기에 비해 비트 오류율 10-6에서 최대 4dB이상 성능이 향상되는 것을 확인할 수 있었다. We Propose a partial response maximum likelihood(PRML) detection method that improves the performance of the high-density optical storage system. It concurrently adjusts the coefficient of equalizer and reference values of branches in Viterbi detector. For the estimation of asymmetric channel characteristics by the tangential tilt, we exploit sync patterns in each data frame. The simulation result shows it improves the Performance up to 4dB at 10-6 BER compared to conventional adaptive PRML.
-
-
-
Market-to-book production efficiency and future stock performance
이규석,김수현 한국생산성학회 2022 生産性論集 Vol.36 No.1
Market-to-book ratios, such as the market-to-book equity ratio, are known to explain average stock returns. Such ratios, however, do not incorporate cross-firm differences in the input-output structure employed to generate a firm’s market and book outputs. In this paper, we propose a version of the market-to-book ratio based on the production efficiency which considers cross-firm differences in the input-output structure, and investigate its relationship with future stock returns. Specifically, we use the industry-wise rank difference between a firm’s sales-oriented and market value-oriented efficiency scores based on the data envelopment analysis technique. Using US data from 1980 to 2015, we find that firms with high (low) sales-oriented and low (high) market value-oriented efficiency scores have the best (worst) future stock returns. A long/short equity investment strategy based on the rank difference generates significantly positive returns and outperforms long/short strategies based on either the sales-oriented or market value-oriented efficiency score or the market-to-book equity ratio. The profitability of the strategy remains significant across most industries and robust to controlling for common risk and momentum factors, to sub-period analyses, and to several alternative ways of measuring the efficiency scores. Taken together, the findings suggest that such a market-to-book ratio based on the production efficiency provides valuable insights into the risks and opportunities faced by a firm.
-
이규석,김태성,박명철 한국컴퓨터정보학회 2024 韓國컴퓨터情報學會論文誌 Vol.29 No.4
본 논문에서는 HMI 디스플레이를 활용하고 IoT 기술을 이용한 박막식 수경 재배 방식의 식물재배기를 제안한다. 기존의 식물재배기는 토양 기반의 재배로 관리가 어렵고, 개방된 재배 환경으로 인해환경조건 최적화가 어려웠다. 또한 즉각적인 제어가 어려워 식물재배의 성장이 지연되어 식물재배에대한 문제점이 있다. 이러한 문제를 해결하기 위해, MCU와 센서를 연결하여 재배 환경을 구축하고, HMI 디스플레이와 연동하여 환경정보를 확인하고 빠르게 제어할 수 있게 구현하였다. 또한, 환경정보의 변화를 최소화하기 위해 케이스를 적용하였다. 박막식 수경 재배시스템 구현으로 토양에 관한 관리를 편하게 하였고 동작과 제어를 통해 기능성을 높였으며, 디스플레이를 통해 환경정보를 쉽게 파악할수 있다. 기존 재배기와 수경재배기에서의 작물 재배 실험으로 성장이 빠른 효과성을 확인하였다. 향후연구 방향으로는 재배 환경정보 전송 및 저장, 비전 카메라를 활용한 성장 정보를 연동하고 비교하여생육 정보를 최적화할 것이다. 이를 통해 효율적이고 안정적인 식물재배할 수 있을 것으로 기대한다. In this paper, we propose a thin-film hydroponic plant cultivator using HMI display and IoT technology. Existing plant cultivators were difficult to manage due to soil-based cultivation, and it was difficult to optimize environmental conditions due to the open cultivation environment. In addition, there are problems with plant cultivation as immediate control is difficult and growth of plants is delayed. To solve this problem, a cultivation environment was established by connecting the MCU and sensors, and the environment information could be checked and quickly controlled by linking with the HMI display. Additionally, a case was applied to minimize changes in environmental information. Implementation of a thin-film hydroponic cultivation system made soil management easier, improved functionality through operation and control, and made it easy to understand environmental information through the display. The effectiveness of rapid growth was confirmed through crop cultivation experiments in existing growers and hydroponic growers. Future research directions will include optimizing growth information by transmitting and storing cultivation environment information and linking and comparing growth information using vision cameras. It is expected that this will enable efficient and stable plant cultivation.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
