• 한국항공운항학회:학술대회논문집
• /
• 2015.11a
• /
• pp.63-67
• /
• 2015

항공기는 공중에서 양력을 발생시키는 과정에서 wake vortex를 생성하며, 항공기 중량과 항공기 주위의 기상(특히 바람 vector)에 따라 wake vortex의 크기와 그 소산속도가 결정된다. 이러한 Raw data 정보는 항공기에 장착된 FMS와 Sensor를 통해 수집될 수 있으며, 이를 ADS-B를 이용하여 지상관제기관과 주변항공기에 전파하면, 실시간으로 매우 정확한 후류크기와 영향범위를 확인할 수 있고, 이로써 보다 안전하고 효율적인 항공기 후류분리가 가능할 것으로 볼 수 있다. 본 자료는, 이러한 맥락에서 ICAO(ASBU)의 후류분리기준 축소를 통한 활주로사용증진 동향과, RTCA DO-260B의 부록(V) "Potential wake vortex and Arrival management ADS-B Application" 요지를 소개한다.

• Proceedings of the KIEE Conference
• /
• 2000.07d
• /
• pp.2667-2668
• /
• 2000

In this paper we consider the TORA system and use sliding observer and backstepping to design a robust controller for tracking problem.

• Proceedings of the Korean Vacuum Society Conference
• /
• 2006.08a
• /
• pp.191-191
• /
• 2006

• Journal of architectural history
• /
• v.25 no.2
• /
• pp.57-68
• /
• 2016

This study explored the Jeollajwasuyeong Dongheon in the Late Joseon dynasty and its findings are as follows. Buildings in Jeollajwasuyeong were completed since the mid-18th century. They formed areas based on functions and were largely classified into two areas. The buildings within Yeongseong included Gaeksa (guesthouse), Dongheon(government office), Hyangcheong(advisory organ), Jungyeong(military camp), Guncheong (county office), Gongbang(workroom), and Changgo(warehouse). There were also buildings for low-ranking government officials. The central part of Jeollajwasuyeong was the areas of Gaeksa and Dongheon. Gaeksa was iconic area where local governors served King and had 75 Jinnamgwan Guesthouses and 3 inner gates. Those were measured off by separate walls. The Dongheon area was located in the northeast of Gaeksa. There were three gates such as Wanyeongru, Gongsamun, and Jeongbyeonmun at the entry area, which were also divided by walls like Gaeksa. Unjuheon (Dongheon) was at the center of the area where Gyeolseungdang, Mugwonjae, Naea, Chaekbang, and Gongsu were built. Outside the area, Baekwadang(used as Bijangcheong), Jinhyulgo, and Byeonggo were composed of part of the Dongheon area. Most of the buildings in Dongheon seemed to be repaired since 1664. It was difficult to locate the area of previous Dongheon. In particular, Jinnamgwan was first built in 1599 and destroyed by fire in 1716. In 1718, the building was reconstructed and shared historic denominator with Unjuheon before 1858 and reconstructed Unjuheon in 1869. It was found that Unjuheon was reconstructed more than at least three times, which was the central building in Dongheon. The buildings including Gyeolseungdang, Mugwonjae, and Baekwadang in the area were not existed within Jeollajwasuyeong and were reconstructed more than once and maintained until the early 1900s.

• Journal of architectural history
• /
• v.27 no.2
• /
• pp.101-112
• /
• 2018

The study on the government office building in Chungcheong Suyeong(忠淸水營) is very rare. How were the Gaeksa(客舍) and Dongheon(東軒) which are representative government office buildings in Suyeong, maintained and what was the aspect of it, while passing through the upheaval period of the end of Joseon(朝鮮)? And where was the original place and was there any change in use? It is so regrettable that these subjects were not figured out yet. So I thought it is very important task to figure out its actual aspect by investigating the maintain state of the Gaeksa and Dongheon and the change of their places. So this study examined the related historical records and, based on it, analyzed "Ocheon GoonJi(鰲川郡誌)" in various view points. Through this analysis, this study could figured out the maintain aspect of the gaeksa and dongheon and the change of their places, and be able to deduce the other change of the government office building. This study could assume the places of each government office buildings by comparing this investigated result and the analyzed result of the original cadastral map in various view points. As the result of the study done by this method, this study confirmed the maintain state of the Gaeksa and Dongheon in Chungcheong Suyeong while passing through the upheaval period of the end of Joseon. And this study figured out the places of the Gaeksa and Dongheon, and be able to confirm their places by the lot number on the original cadastral map. Along with this, this study could estimate Jo(趙) family's confliction with the residents at that time by verifying the lot numbers of the Sapaeji(賜牌地) which this family received from the government. And among the names of the government office buildings, for the Jangkyocheong(將校廳) which is in dispute because of the name, this study figured out that the author of "Ocheon GoonJi" made a mistake in writing Dongheon.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2008.05a
• /
• pp.985-988
• /
• 2008

This paper introduces a new TR-UWB system, using frequency-domain components of UWB pulses. This is achieved by separating converted frequency-components into real and imaginary parts, and both parts are correlated and effectively combined. We make an analysis that the new scheme improves performance compared with a conventional by complex correlation computing. The simulation results confirmed that the proposed scheme has better performance than existing system.

• The Journal of the Korean dental association
• /
• v.51 no.9
• /
• pp.511-517
• /
• 2013

To assess the association between oral health and general health, this study examined the relationship between chewing difficulty and twelve chronic health conditions such as hypertension, hyperlipidemia, diabetes, cerebro- and cardiovascular disease, musculoskeletal disease, respiratory disease, eye/nose/throat disease, stomach/intestinal ulcer, renal dysfunction, thyroid disease, depression, and cancer in Korea. The study population was 3,066 elders aged 65 years old and more from the fourth Korean National Health and Nutrition Examination Survey. Chewing difficulty was measured on a 5-point Likert scale. Chronic conditions were assessed by self-reported questionnaire. Confounders were age, gender, education, income, smoking, drinking, and obesity. Chi-square test, general linear model, and multiple logistic regression model were done with complex sampling design. Musculoskeletal disease (adjusted odds ratio=1.33), respiratory disease (adjusted odds ratio=1.52), and cancer (adjusted odds ratio=1.58) were independently associated with chewing difficulty. Multiple chronic conditions with more than 4 chronic disease showed significant association with chewing difficulty (adjusted odds ratio=1.37).

• Journal of Institute of Control, Robotics and Systems
• /
• v.22 no.2
• /
• pp.97-103
• /
• 2016

In this paper, a smartphone-controlled personal mobility system (PMS) with semi-autonomous navigation is developed. The proposed PMS moves to waypoints and then reaches the destination where the waypoints and destination are selected by the user using Google maps in a smartphone. The hardware environment consists of a GPS (Global Positioning System) in the smartphone and a compass sensor. In addtion, while it is moving in autonomous mode, the user can intervene and change the direction and speed of the PMS in order to avoid obstacles that may be encountered accidentally in a dynamic environment. That is why it is called "semi-autonomous navigation". Experimental results showed that the proposed PMS is effectively able to migrate to the waypoints and destination in both autonomous and manual modes.

• 축산식품과학과 산업
• /
• v.7 no.1
• /
• pp.42-51
• /
• 2018

• 축산식품과학과 산업
• /
• v.6 no.2
• /
• pp.41-47
• /
• 2017