LX-PPS GNSS 상시관측소의 정밀측위 활용 가능성 분석

하지현,박관동,김혜인,Ha, Jihyun,Park, Kwan-Dong,Kim, Hye-In 한국국토정보공사 공간정보연구원 2021 지적과 국토정보 Vol.51 No.1

본 논문에서는 LX-PPS 상시관측소를 이용하여 건물 옥상에 설치된 GNSS 상시관측소에 대한 정밀측위 활용 가능성을 분석하였다. 이를 위해 LX-PPS 상시관측소와 가장 인접한 지역에 위치한 국토지리정보원 상시관측소를 선정하였으며, GIPSY를 이용하여 고정밀 처리하여 좌표변동 경향을 상호 비교, 분석하였다. 그 결과 양 기관의 정밀좌표 시계열 모두 한반도 지각변동 속도와 일치하는 수평, 수직 변동경향이 나타났으며, 서로 그 크기와 방향도 매우 유사하게 나타났다. 또한 좌표시계열에서 속도를 제거한 후 두 기관의 상시관측소에서 유사한 크기의 계절신호가 관측되었으며, 이 신호는 서로 다른 지역에 위치한 상시관측소에 비해 2km 이내의 동일 지역에 매우 인접하게 설치된 상시관측소에서 진폭과 위상 모두 매우 비슷하게 나타났다. 계절신호 제거 후 국토지리정보원 좌표를 기준으로 LX-PPS 상시관측소의 좌표 오차를 산출했을 때 RMS와 표준편차는 모두 남북 1mm, 동서 2mm, 수직 5mm로 나타났다. 이와 같이 LX-PPS 상시관측소는 건물 옥상에 설치되어 있음에도 불구하고 지표면에 설치된 국토지리정보원의 상시관측소와 동일한 수준의 높은 측위 성과 달성이 가능하다는 것을 확인할 수 있었다. In this paper, we analyzed the possibility of utilizing LX-PPS GNSS permanent stations whose antennas are installed on the building rooftop for the purpose of high-precision GNSS positioning services. We picked 15 pairs of adjacent GNSS permanent stations operated by LX-PPS and NGII, and then produced 3-year-long time series using the high-precision data processing software called GIPSY. Patterns and trends of position estimates were compared and analyzed. Horizontal and vertical deviations including the linear velocities coincide with the well-known crustal deformation rates of the Korean peninsula. We also observed almost the same annual or seasonal patterns from those nearby sites. After detrending the linear velocity, the amplitude and phase of annual signals almost perfectly match each other within the baseline length of 2 km. By subtracting seasonal signals, the RMS and standard deviations in LX-PPS PPGR with respect to NGII KANR are about 1, 2, and 5 mm in the north-south, east-west, and vertical directions, respectively. From this analysis it can be concluded that the rooftop-installed LX-PPS sites show similar level of stability and positioning performance comparable to those ground-mounted NGII stations.

항행 및 항법 : LX대한지적공사 위성측위 인프라 구축 및 네트워크 실시간 이동측위 성능 분석

하지현 ( Ji Hyun Ha1 ),김현호 ( Hyun Ho Kim ),김재복 ( Jae Bok Kim ) 한국항행학회 2014 韓國航行學會論文誌 Vol.18 No.6

대한지적공사 공간정보연구원에서는 네트워크 RTK의 효율성을 향상시키기 위하여 전국에 30개소의 LX 위성측위 인프라를 구축하고 MAC기반의 네트워크 RTK 서비스를 시험운영하고 있다. 본 논문에서는 LX 위성측위 인프라의 구축 현황을 소개하고 MAC기반의 네트워크 RTK 서비스의 측위 성능 분석 결과를 기술하였다. 성능 분석을 위하여 임시 고정점을 설치하고 국토지리정보원의 VRS와 동시관측을 실시하였다. 그 결과 두 인프라는 동서, 남북 방향으로 평균 1~2 ± 1 cm 차이를 보였으며 , 초기화 시간도 10초 이내에서 근소한 차이를 보였다. For improvement of network RTK performance in survey field, Spatial Information Research Institute (SIRI), LX Korea Cadastral Survey Corporation installed 30 GNSS permanent stations in Korea Peninsula, and has been running the MAC-based network RTK service as a test version. In this paper, we introduce the LX GNSS network and analyze the positioning accuracy of the LX MAC RTK service. For field test of the LX MAC RTK service, we installed temporally fixed anchor points and observed simultaneously with VRS of National Geographic Information Institute. As a result, the horizontal position differences and initial times of LX MAC with respect to NGII VRS are 1~2 ± 1 cm and <10 seconds, respectively.

5-HTTLPR과 COMT 유전자 다형성과 성격 특성에 대한 연합연구

하지현,함병주,류성곤,황태연,이종국,이유상,이정식,강대엽,최인근,이민수,Ha, Jee-Hyun,Ham, Byung-Joo,Ryu, Sung-Gon,Hwang, Tae-Yeon,Lee, Jong-Gook,Lee, Yu-Sang,Lee, Jung-Sik,Kang, Dae Yeob,Choi, Ihn-Geun,Lee, Min Soo 대한생물정신의학회 2004 생물정신의학 Vol.11 No.2

Background:Serotonin transporter gene-linked polymorphism region(5-HTTLPR) and catechol-O-methyltransferase( COMT) genes are thought to be important factors in some personality traits and the etiology of anxiety disorder. The goal of this study was to determine the role of these genes in personality traits. Method:The participants included 116 healthy adults with no history of psychiatric disorders and other physical illness for the last 6 months. All participants were tested by Temperament and Character Inventory(TCI). The 5-HTTLPR, COMT val158met gene polymorphisms were analyzed with PCR(Polymerase Chain Reaction). Differences on TCI dimensions and sub-scales among groups were examined with t-test and ANOVA. Result:There were possible relationships of the 5-HTTLPR with self-transcendence(P=0.050) and COMT val158met polymorphism with cooperativeness(P=0.053). Conclusion:We found associations between 5-HTTLPR, COMT polymorphisms and the some TCI character dimensions. Further studies of polymorphisms of other genes and their interactions may clarify the complex relationship between personality and genes.

철릭의 연대별 치수비교 연구

하지현,김희은,Ha, Ji-Hyun,Kim, Hee-Eun 한국의류산업학회 2017 한국의류산업학회지 Vol.19 No.5

The purpose of this study is to provide basic data for design and pattern development research in the modernization of Cheollik by comparing and analyzing the interrelationships between the components of the Cheollik. The 237 pieces of excavated costume Cheollik in the museums were surveyed. The size of the Cheollik components were examined by 100 year unit from 1400s to after 1800s. In the 1400s, the length of Cheollik was the shortest and the length of top was longer than the bottom. In the 1700s, the total length was the longest and the bottom was longer than the top. As the age increases, the total length and the bottom become longer and the length of the top becomes shorter. Poom and Gutseop were the largest in the 1400s and the smallest the after 1800s. As the age of the Poom and Gutseop decreased, the width of the Anseop increased. Gutseop was always present but Anseop was not always present in Cheollik components. As the ages passed, Jindong and Soogu became narrower and Baerae became wider. These change of Cheollik's sleeves form were affected by GongBok(so-called official wear) sleeves. By age, Cheollik did not show any big change in the basic shape, but the partial dimensions of the components showed changes. If the design and pattern research for modernization is done based on systematic establishment of pattern dimension of Cheollik, Cheollik dress combines practicality while preserving beauty and tradition at the same time.

표고버섯 피부염(Shiitake Dermatitis)의 임상 및 병리조직학적 고찰

하지현 ( Ji Hyun Ha ),변대규 ( Dae Gyoo Byun ),김석민 ( Seog Min Kim ),유철호 ( Chul Ho Yoo ),박철종 ( Chul Jong Park ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.4

N/A Background : Shiitake dermatitis has been reported mostly from Japan and characterized by distinctive pattern of itchy skin eruption after the ingestion of raw shiitake mushrooms. Objective : The purpose of this study is to investigate clinical, laboratory and histopathologic profiles about shiitake dermatitis occurring in Korea. Methods : From 1997 to 2001, we had observed 58 patients with shiitake dermatitis and investigated clinical, laboratory and histopathologic aspects. Result : Most patients with shiitake dermatitis presented with a very strong itching sensation, which was accompanied with linearly grouped or disseminated small erythematous papules. 53patients(91%) had noticed their skin eruption within 3 days after eating shiitake mushrooms. The involved sites were trunk, extremities, neck and face in decreasing order of frequency. Laboratory and histopathologic findings were nonspecific. In 33 patients(57%), the eruption occurred after eating boiled or panbroiled shiitake mushrooms. Conclusion : In this study, clinical, laboratory and histopathologic findings of shiitake dermatitis were almost consistent with the previous reports. But, contrary to the previous reports in Japan, many cases with shiitake dermatitis occurred on eating sufficiently boiled or cooked shiitake mushrooms. This may imply another eiologic factor different from thermolabile toxin. (Korean J Dermatol 2003;41(4) : 440∼444)

한국어판 소아청소년 기질성격검사의 신뢰도 및 타당도 연구

하지현 ( Jee Hyun Ha ),유희정 ( Hee Jeong Yoo ),조인희 ( In Hee Cho ),류인균 ( In Kyoon Lyoo ),신재공 ( Jae Gong Shin ),김지현 ( Ji Hyeon Kim ),홍계현 ( Kye Hyun Hong ),최소현 ( So Hyun Choi ) 한국정신병리진단분류학회 2005 精神病理學 Vol.14 No.1

Objectives: The purpose of this study is to evaluate the reliability and validity of the Junior Temperament and Character Inventory(JTCI), which is a child and adolescent version of Temperament and Character Inventory. Method: JTCI was translated to Korean and applied to 796 children(male=402, female=394, age=11.0±0.9), and their parents. Internal consistency was calculated by Cronbach`s α. A test-retest study was done after 3 months with 115 subjects. Factor analysis for the temperament and character factors were performed using principal component analysis, rotating factor varimax. Results: Cronbach`s α values of the JTCI scales ranged from .52 to .77 for the temperament scales except persistence(.09), and from .47 to .65 for the character scales. Test-retest correlation was relatively low. Factor analysis of temperament showed 3 factors out of 4 temperament scales, but couldn`t extract clear differentiations in character dimension. Intercorrelation between 7 factors were clear each other significantly. Female showed higher reward dependence, persistence, self-directedenss and cooperativeness than male. Discussion: Although reliability is relatively low, this study suggests JTCI is a useful tool to evaluate biosocial model of personality in children population. Character dimension should be assessed with the careful consideration of their development.

수포성 옴

하지현 ( Ji Hyun Ha ),최문정 ( Moon Jung Choi ),김태윤 ( Tae Yoon Kim ),김수찬 ( Soo Chan Kim ),이준영 ( Jun Young Lee ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.3

We report a case of bullous scabies in an 81-year-old male patient. He had severe pruritic, multiple tense bullae on erythematous base with erosions and crusts from which scabies mites were identified. Histopathologic findings(H&E) revealed subepidermal b

현대사회와 성격

하지현 ( Jee Hyun Ha ) 한국정신병리진단분류학회 2002 精神病理學 Vol.11 No.1

인터넷 중독의 정신과적 개념과 문제점

하지현(Jee Hyun Ha) 대한사회정신의학회 2001 사회정신의학 Vol.6 No.2

인터넷 사용자가 급증하면서 과도한 인터넷 사용에 의한 심리, 행동, 생활상의 문제점이 야기되고 있다. 이를 통칭 ‘인터넷 중독’이라 하는데 이에 대한 개념적 고찰과 이에 대한 진단체계상의 문제, 증상 및 현황, 기존 정신병리와의 연관성에 대한 연구결과들을 문헌고찰을 하였다. 그리고 인터넷 중독이 의심되는 환자를 어떻게 평가할 것인가에 대한 일반적인 평가방법을 알아본 후 1차적 원인제거, 인지행동치료, 약물치료등 현재 활용 가능한 치료법을 간략히 소개하였다. 이후 인터넷 중독과 관련해서 정신의학영역에서 관심을 가져야할 개념적, 실천적, 연구활동의 방향을 제시하고자 한다. According to the abrupt increasement of internet user, there happened some problems in internet usage. Some pathological internet user showed problems in psychological, behavioral areas. They are called in ‘internet addiction’. So Author tried to describe the concept of internet addiction in the realm of ‘behavior addiction’, and diagnostic issues, symptoms and prevalences. Author also reviewed the study results about the association with the current psychiatric disorders, and psychopathology. Then author proposed the general evaluation processes and check points whom overuses internet and drawn into the cyberspace omitting things to do in real space. The therapeutic process of internet addiction started with awareness of problem himself at first, cognitive approach, pharmacotherapy when target symptoms existed. At last author proposed the responsibility and duty of mental health professionals to save the people who suffered from ‘interent addiction’, research items regarding diagnostic validity issues, conceptual issues, therapeutic issues.

영어 서술 형용사 구문에 내재된 타동성의 정도성

하지현(Jihyeon Ha) 한국중원언어학회 2018 언어학연구 Vol.0 No.48

This paper explores whether the transitivity of predicative adjective sentences can be differed by their transitivity degree by their complement and provides the way to measure the transitivity in predicative adjective sentence based on existing studies of transitivity. To prove this, this study extracted the data from the American English Corpus (COCA) and used the transitivity scale mainly inspired by Hopper & Thompson (1980). The result shows that the adjectives with quality and value related meanings are more likely to show transitivity. The affirmative sentences and reality mode does seem to occur more in adjectives with prepositional phrase attached. However, the result shows little relevance of prepositional phrase with sentence transitivity and also, the animacy is higher in sentences without the prepositional phrase. This result seems to be the results due to the characteristics of the corpus. Also, lack of consideration of other forms of complements can be another factor. However, as this study has a few limitations, the result should be refined by more researches.