Repetitive Compensation Control for AGC System By Using Pre-Pass Rolling Data

Hwan?Seong KIM,Jin?Seon PARK,Sang?Dol LEE,Keum?Jae LEE,Sung?Kwan PARK 제어로봇시스템학회 2001 제어로봇시스템학회 국제학술대회 논문집 Vol.2001 No.10

스키리조트 워터파크 체험과 체험만족, 소비자태도 및 재방문의도의 구조적 관계

박재환(Park Jae-Hwan) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.3

The purpose of this research was to investigate effect of a consumers’ satisfaction, revisit intentions and experience in ski resort water park through the analysis of Structural Equation Model(SEM), focusing on the theoretical structure. The subjects of this research were customers in ski resort water park. Out of 250 samples, 237 samples through convenience sampling method, were used in the final analysis, excluding 13 less reliable sample. This data was processed by using SPSSWIN Ver.18.0 and AMOS 18.0, Individual hypothesis was verified after reviewing a model adequacy by data processing. The results were as follows; First, sensory, emotional and cognitive experience had exerted a useful positive influence over consumers satisfaction but act and relate experience had not exerted a influence over consumers satisfaction. Second, consumers satisfaction had not exerted a influence over revisit intentions. Third, consumers satisfaction had exerted a useful positive influence over consumers attitude. Forth, consumers attitude had exerted a useful positive influence over revisit intentions.

Variation of Bird community and Habitat use after Developing Hangang river Ecological Learning Center

Paik, In-Hwan,Jin, Seon-Deok,Jeon, Byung-Seon,Yu, Jae-Pyoung,Park, Chi-Young,Paek, Woon-Kee national science museum of korea 2010 Journal of Korean nature Vol.3 No.4

The Hangang (Han River) Ecological Learning Center is a river ecosystem park which was completed in December of 2002. The river ecosystem park was created based on the understanding of the problems of standard park-formed river which centers around convenient facilities instead of on the wish to accentuate the innate unique characteristics of a river. Therefore, the study was conducted in order to analyze the changes and habitation usage of the avifauna in the Hangang Ecological Learning Center to provide basic information for the improvement of bird species diversity in an ecosystem park. The study was conducted in July and October of both 2003 and 2005 to study the avian colonies of the same time period, and the habitat usage of four different areas were examined. Main dominant species includes species which preferred waterside and grassland, and 2005 showed higher levels of species, bird count and number of migratory birds. Furthermore, among the four regions used as habitats, the confluence region showed the highest level of increase, and this is predicted to have caused by the shallow depth of the confluence and the stability of the waterside plant colonies.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

( Hyun-su Hwang ),( Jae-kang Lee ),( Tae-kyung Eom ),( Ho-kyoung Bae ),( Dong-ho Lee ),( Jong-hwan Lim ),( Sung-cheol Jung ),( Chan-ryul Park ),( Shin-jae Rhim ) 한국산림과학회(구 한국임학회) 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

Hwang, Hyun-Su,Lee, Jae-Kang,Eom, Tae-Kyung,Bae, Ho-Kyoung,Lee, Dong-Ho,Lim, Jong-Hwan,Jung, Sung-Cheol,Park, Chan-Ryul,Rhim, Shin-Jae Korean Society of Forest Science 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

급성 심근허혈에 의해 윤발된 승모판 폐쇄부전의 기전에 관한 실험적 연구

강덕현,송현,송재관,김현숙,이재환,임희영,이재원,박성욱,박승정,송명근 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.8

가족성 용종증에서 시행한 J형 회장 저장낭-항문 문합술의 수술성적

이현국,박규주,오재환,박재갑,이현국,박규주,오재환,박재갑 대한대장항문학회 1995 Annals of Coloproctolgy Vol.11 No.4

논문 : 국립공원 탐방로 내 위험 급경사지 유지관리 방안 연구

김홍균 ( Hong Gyun Kim ),김태호 ( Tae Ho Kim ),김재학 ( Jae Hak Kim ),곽재환 ( Jae Hwan Kwak ),박성욱 ( Sung Wook Park ),최수원 ( Soo Won Choi ),송영갑 ( Young Karb Song ) 대한지질공학회 2016 지질공학 Vol.26 No.1

국립공원은 주로 산악 지형 내 조성되어 있으므로 산사태에 의한 피해 가능성을 항상 내포하고 있다. 본 연구는 산사태 연구의 일환으로 국립공원 탐방로 내 위험 급경사지를 체계적으로 유지관리하기 위한 방안을 마련하는데 목적이 있다. 국립공원에 특화된 자체 체크리스트를 제작하였으며, 전국 19개 국립공원 183개소 급경사지에 대한 실태조사가 이루어졌다. 실태조사의 최종 목적은 위험 급경사지에 대한 안정화 대책을 마련하는 것으로 현장조사와 안정해석의 과정을 거친다. 일부 급경사지에서는 위험성 판단을 위해 지상라이다 등 특수 장비를 이용한 조사를 시도하였다. 중장기 정비계획을 위한 투자우선순위 공식을 개발하였으며, 현장자료를 이용한 순위 및 위험등급을 산출하였다. 최종적으로 위험 급경사지의 향후 체계적인 관리를 위해 “국립공원 급경사지 유지관리시스템”을 개발하였으며, 모든 현장자료들은 시스템 내 DB화 되었다. National parks, which are located mainly in mountainous areas, are always at risk of damage by landslides. The goal of this study is to establish a method for systematically maintaining hazardous steep slopes along trails in national parks. We produced a checklist suitable for each of the 19 national parks nationwide and investigated 183 slopes. The aim of these investigations is to recommend appropriate slope-stability countermeasures, including field investigations and stability analysis. We made preliminary investigations at specific sites, evaluating the slope hazard using specialized equipment such as terrestrial LiDAR. An investment priority formula was developed, and ranking and hazardous grades were calculated as part of a long-term maintenance plan. Finally, to systematically manage dangerous slopes and to house all the field data within one system, we developed the “Slope Maintenance System in National Parks” based on web server that can show various information for slopes.

人間相互作用에 관한 濟州島民의 社會意識 : 民俗資料를 中心으로

朴在煥 제주대학교 1977 논문집 Vol.9 No.1

Cheju islanders dave lived under exceptional situations. First of all, we can point out the unique natural condition of Cheju island mainly from geographical isolation, poor soil, and windy, humid climate. Geographical isolation from the mainland, Korean peninsula, resulted in quite frequent invasion from outside especially from Japanese invaders, and the cultural isolation from the mainland. But the more important thing is the poor soil and windy, humid climate of this island. Every products from soil were too short. Another inherent condition of Cheju Island comes from its historical experiences. Although this island had started as an independent country, its history was characterized by the invasion and severe exploitation from outside. To escape these undesirable conditions many inhabitents left this island. But even this kind of trial was blocked by law (1629-1830). Moreover the marriage between an islander and a mainland inhabitant was prohibited by this law. These special situations might condition the modal pesonality structure of Cheju islanders' and their consciousness of social interactions. From the analysis of some kinds of folklore-data, consdering the unique conditions of Cheju island, we may deduce that the characteristics of Cheju islanders' modal personality and their consciousness of social interactons are as follows: 1) The so-called positive aspects of Cheju islanders' modal personality are diligence, frugality and self-reliance. 2) Inferior complex, closed-mindedness and exclusivism are indicated as negative aspects of it. 3) But all of these traits have been resulted from this islanders' unique experiences, and are not separate themselves in nature. 4) Diligence, frugality and self-reliance are only the manifest aspects of the deeper trait: the strong tendency to accept the relity of life. 5) On the other hand, inferior-complex, closed-mindedness and exclusivism comes from the characterics of its isolated culture. 6) In Cheju dialect, the honorific mood by finite verbal endings is mainly the hearer-oriented honorific system whereas the speaker-oriented honorific system has not yet been established. 7) From this finding, we may also infer Cheju islanders' general tendency of social interactions: The Emphasis on Right Now or Present Situations 8) Wife is not so subordinate to husband's family, and husband-wife relation seems impartial. 9) This has resulted from wife's deep participation in productive labour and the traditional family system of this island. 10) Socialization of children seems more independent and liberal than that of the mainland. 11) Women are self-reliant, and the Confucious value system about sex roles has not so restricted the general relation between man and woman. 12) Cheju islanders' consciousness of outworld is ambivalent: envy and exclusivism. 13) If one has some kinds of frosted rights in his community, his envy toward the outworld often bends to stronger in-group consciousness. Of course, these tentative deductions are never sufficient to grasp Cheju islanders' consciousness of social interactions. However, we may assume that these results give some kinds of suggestions fore more detailed analysis of reality at least.

Dielectric Resonator의 마이크로파 유전 특성 측정에서 발생하는 오차요인 분석

박재환 한국교통대학교 2016 한국교통대학교 논문집 Vol.51 No.-

High-Q dielectric materials have been widely studied and used for the microwave passive devices such as resonators and filters. Transmission-mode cavity resonator method is very useful for the measurement of quality factor of the dielectrics. However, there could be some error factors in determining Q-factor measurement. In this paper, the effects of cavity material on the Q-factor measurement of microwave dielectric materials were studied by HFSS simulation. TE01δ mode resonant frequency was determined from the electric and magnetic field patterns and the loaded Q-factor was calculated from 3dB bandwidth of S21 spectrum. When the cavity metal materials were Cu and SUS, the level of Q-factor was similar. However, Q-factor was significantly decreased when the Cu metal was oxidized to CuO during 10 years.