영동대설 사례와 관련된 동해상의 현열속과 잠열속 분포 특성

김지언,권태영,이방용 한국해양과학기술원 2005 Ocean and Polar Research Vol.27 No.3

To investigate the air mass modification related with Yeongdong heavy snowfall events, we examined sensible and latent heat fluxes on the East Sea, the energy exchange between atmosphere and ocean in this study. Sensible and latent heats were calculated by a bulk aerodynamic method, in which NCEP/NCAR reanalysis data and NOAA/AVHRR weekly SST data with high resolution were used. Among winter precipitation events in the Yeongdong region, 19 heavy precipitation events (1995~2001) were selected and classified into three types (mountain, cold-coastal, and warm types). Mountain-type precipitation shows highly positive anomalies of sensible and latent heats over the southwestern part of the East Sea. When separating them into the two components due to variability of wind and temperature/specific humidity, it is shown that the wind components are dominant. Cold-coastal-type precipitation also shows strong positive anomalies of sensible and latent heats over the northern part and over the central-northern part of the East Sea, respectively. It is shown that the sensible heat anomalies are caused mostly by the decrease of surface air temperature. So it can be explained that cold-coastal-type precipitation is closely related with the air mass modification due to cold air advection over warm ocean surface. But in warm-type precipitation, negative anomalies are found in the sensible and latent heat distributions. From this result, it may be postulated that warm-type precipitation is affected by the internal process of the atmosphere rather than the atmosphere-ocean interaction.

파라과이 농촌지역의 보건소 건립 후 접근성과 이용만족도에 관한 연구

김지언,정민아,남은우 한국의료복지건축학회 2023 의료·복지 건축 Vol.29 No.2

Purpose: The purpose of this study is to identify policy implications for the construction of public health facilities in the field of international cooperation, by examining the case of establishing a health care delivery system using a public health center in a rural area of Paraguay. Methods: Firstly, to map the capacity of the 20 public health centers that were studied, we used the WHO Capacity Mapping tool to select and analyze relevant items. Secondly, to assess the utilization of public health centers, we conducted a direct visit survey and analyzed the results using the M-survey tool. Results: The floor plan of each public health center, the structure of the health center, the size of the population served by each health center, the number of monthly visitors, medical human resources, and the budget were classified by health center for comparative analysis. In addition, by utilizing the M-survey tool, we analyzed the general characteristics of the respondents, their perceptions of the purpose and accessibility of public health centers, their satisfaction with using public health centers, and the level of demand for public health centers to play a role in promoting community health. Implications: The results of this study suggest that access to public health facilities for residents in the research area was improved. By classifying public health centers into two types, these centers can perform the functions and roles of primary health facilities. A patient request and evacuation system was established in the research area. Finally, a network, such as a social prescribing program, is needed so that public health centers can function as a "setting" for community members to live together.

Catathrenia (Nocturnal Groaning) 1 예

김지언 대한수면연구학회 2004 Journal of sleep medicine Vol.1 No.2

Catathrenia is a chronic, usually nightly disorder characterized by expiratory groaning during sleep, particularly during the second half of the night. Polysomnography reveals recurrent bradypneic episodes that emerge mainly during REM sleep. I present a case of catathrenia who had episodes of bradypnea associated with vocalization confirmed by polysomnography.

도시 공간 속 노점상에서 드러난 비공식성과 공식성의 상호작용 : 서울특별시 강남구 측 강남대로의 노점상에 대한 사례연구

김지언 서울대학교 국토문제연구소 2016 地理學論叢 Vol.62 No.-

현대 도시사회는 비공식성으로 점철되어있고, 이러한 비공식성은 사회의 공식성과 상호작용하며 결과론 적으로는 두 영역 모두의 변화를 이끌어 내게 된다. 본 연구에서는 이러한 도시비공식성의 이론을 서울특별시 강남 구 측 강남대로의 노점상에 적용하여 분석해보고자 한다. 특히 Kudva의 도시비공식성 이론과, Etzold의 방글라데 시 다카에서의 연구를 기반으로 하여, 도시 비공식성의 이론으로 노점상의 생성 및 유지를 살펴보고자 한다. 외환 위기 이후 급속하게 증가한 노점상은, 정부 및 지방자치단체로 대표되는 공식성과 많은 마찰을 일으키며, 그 갈등 의 정도는 점점 심화되고 있는것이 실정이다. 이러한 갈등은 특히 사례지역에서 잘 나타나며, 본 연구에서는 갈등 의 원인에 대하여, 그리고 공식성과 비공식성이 상호작용하는 모습이 현실세계에서 구현되는 양상에 대하여 분석 해 보고자 한다. 또한, 강남구청과, 서초구청으로 대표되는 서울시청이 노점상을 대하는 상이한 노선에 대해서 논 의해보고, 비공식성과 공식성의 다양한 상호작용이 어떠한 결과를 가져오는지 알아보고자 한다. Prevalence of Urban Informality is one of the key characteristics of today’s society. And the transaction between the urban informality and the formality ultimately results in the changes in both formality and informality. This study will apply the concept of Urban Informality to the Street Vendors in Gangnam-daero in Gangnam-gu, Seoul. Based on the concept of urban informality by Kudva, and the research of Bangladesh by Etzold, we will see how street vendors are formed and developed in the lens of urban informality. Street vendors increased in numbers since the Asian Economic Crisis in 1997, and the conflicts between these vendors and the government are increasing as the time passes. This conflict is especially prevalent in the research area (Gangnam-daero), and we will analyze the reason for this conflict, as well as how the transactions between formality and informality is realized in the conflict. Also, this study will focus on the different reactions by Gangnam-gu and Seoul city (Seocho-gu), and how the diverse interaction between formaily and informality results in different situations.

수중음파 센서네트워크를 위한 계층별 프로토콜의 설계 및 성능 평가

김지언,윤남열,김영표,신수영,박수현,전준호,박성준,김상경,김창화,Kim, Ji-Eon,Yun, Nam-Yeol,Kim, Yung-Pyo,Shin, Soo-Young,Park, Soo-Hyun,Jeon, Jun-Ho,Park, Sung-Joon,Kim, Sang-Kyung,Kim, Chang-Hwa 한국시뮬레이션학회 2011 한국시뮬레이션학회 논문지 Vol.20 No.4

최근 수중 환경 모니터링 시스템에 대한 관심이 높아지면서 수중음파센서네트워크에 관련된 연구가 활발히 진행되고 있다. 수중음파센서네트워크는 수중환경 모니터링, 수중자원탐사, 해양 데이터 수집, 군사 목적 등 다양한 분야에 활용되고 있다. 이러한 다양한 분야에서 활용 가능한 수중음파센서네트워크의 활성화를 위해서는 PHY-MAC 프로토콜의 정의가 필수적이다. 하지만, 수중음파센서네트워크는 제한된 대역폭, 다중경로 및 페이딩현상, 지상 무선통신에 비해서 낮은 음파 속도로 인한 전송 지연시간 등 수중환경의 특수성에 고려해서 구현을 해야 한다. 본 논문에서는 수중환경과 관련된 제약사항을 고려하여 적응적인 PHY 프로토콜의 주파수, 네트워크 토폴로지, MAC 프로토콜, PHY-MAC 인터페이스, 데이터 프레임 포맷을 정의하고, 구현한 시스템의 구성에 대해서 설명하며, 수중환경에서의 실제 실험을 통한 데이터를 기반으로 성능 평가를 하였다. As underwater environment monitoring system's interest has increased, the research is proceeding about underwater acoustic sensor network. Underwater sensor network can be applicable to many fields, such as underwater environment monitoring, underwater resource exploration, oceanic data collection, military purposes, etc. It is essential to define the PHY-MAC protocol for revitalization of the underwater acoustic sensor network which is available utilization in a variety of fields. However, underwater acoustic sensor network has to implement by consideration of underwater environmental characteristics, such as limited bandwidth, multi-path, fading, long propagation delay caused by low acoustic speed. In this paper, we define frequency of adjusted PHY protocol, network topology, MAC protocol, PHY-MAC interface, data frame format by consideration of underwater environmental characteristics. We also present system configuration of our implementation and evaluate performance based on our implementation with test in real underwater field.

2018 International Investigative Dermatology 참관기

김지언 한국피부장벽학회 2018 한국피부장벽학회지 Vol.20 No.1

랜덤 동적 개체의 군집 위치 제어 기법에 관한 연구

김지언,이민철 제어로봇시스템학회 2008 제어로봇시스템학회 국내학술대회 논문집 Vol.2008 No.10

This paper studies a method to cluster randomly moving factors and to control the position of them. This study is motivated by the figure of shepherding sheep in prairie and thus this paper proposes a cluster position control method, Boundary Push Method. the proposed method controls cluster by driving around boundary and pushing factors inward such as shepherding figure. This study can be applied such as to operating algorithm for public service robot servign crowd or error control method for multi agent mobile robots system. Most of cluster control theory for dynamic factors is based on anisotropy regulation like as following other factors, but in this proposed method, system demands no dynamic regulation of factors only except repulsion to control the cluster. In this paper, there is description of proposed Boundary Push method and simulation of the algorithm to evaluate results.

Experiences of Tracheal Procedure Assisted by Extracorporeal Membrane Oxygenator

김지언,정성호,마대성 대한흉부외과학회 2013 Journal of Chest Surgery (J Chest Surg) Vol.46 No.1

We report on the application of a venovenous type extracorporeal membrane oxygenator (ECMO) in high-risk tracheal procedures in six cases consisting of five patients with tracheal stenosis. An ECMO should be helpful for preventing respiratory emergency during a tracheal procedure.

내측측두엽 간질환자에서의 측위증후

김지언 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.4

저자는 약물에 반응하지 않는 내측측두엽간질로 진단받고 간질수술을 시행받은후 1년이상 추적관찰하여 간질발적빈도가 술전에 비해 90%이상 감소되었거나 또는 완전히 소실된 환자 35명을 대상으로 180회의 간질발작의 징후를 CCTV를 통한 비디오로 분석하여 다음과 같은 결론을 얻었다. 1. 간질유발병소를 추정하는데 가장 도움이 되는 측위증후는 병변과 동측의 자동증과 함께 반대편의 이긴장성자세가 관찰되는 경우(87%)였으며, 그 다음이 병변위치와 반대편의 이긴장성 자세가 단독으로 나타나는 경우(75%), 병변과 동측의 자동증만 나타나는 경우(70%)였다. 2. 두부회전은 처음부터 병변의 반대측으로 회전하는 경우보다 처음에는 동측으로 회전하였다가 다시 반대편으로 회전하는 경우가 더욱 측방성의 가치가 높았다. Various signs of lateralization have been described in temporal lobe epilepsy (TLE). They include unilateral automatism, unilateral dystonic posture, versive head and body turning, ictal speech and so on. Because their specificity is still unclear, they are used to a limited degree in lateralizing the side of ictal onset. We evaluate the value of lateralizing signs in patients with TLE. We analyzed semiology of 180 seizures in 35 TLE patients who were evaluated for epilepsy surgery at Dongsan Epilepsy Center between November, 1992 and October, 1995. All patients had received epilepsy surgery, and they were seizure free or exhibited aura only for at least 12 months following surgical resection. Unilateral dystonic posture alone was observed in 22 seizures [ipsilateral : 6(25%), contralateral: 16(75%)]. Unilateral hand automatism alone was observed in 33 seizures [ipsilateral: 23(70%), contralateral: 10(30%)]. Unilateral dystonic posture accompanied by automatism of the other side was observed in 56 seizures [ipsilateral automatism combined with contralateral dystonic posture : 48(87%), contralateral automatism combined with ipsilateral dystonic posture: 7(13%)]. Versive head turning was noticed in 35 enents [ipsilateral 4(11%), contralateral: 22(63%), initial ipsilateral to contralateral : 9(26%), initial contralateral to ipsilateral: 0]. We conclude that the most valuable lateralizing sign in TLE is contralateral dystonic posture accompanied by ipsilateral automatism, and ipsilateral hand automatism alone and contralateral dystonic posture alone are also significant.

소모성 질환에 이환된 이유자돈에 대해 Porcine cytomegalovirus DNA Polymerase 유전자 검출과 분석

김지언,김지영,楚佳奇,채미경,장경수,김명철,박창식,전무형 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Porcine cytomegalovirus (PCMV) causes piglet deaths, runting, inclusion body rhinitis, respiratory and reproductive disorders in swine herd, resulting in the significant economic losses in the swine industry. Recently, in the field of pig-to-human xenotransplantation, PCMV has been indicated as a potential xenogeneic pathogen with the risk for infection transmitted from the xenograft donor to the recipient. In this study, PCMV DNA polymerase gene was detected in the sera and nasal swabs from 30 heads of the weaned piglets affected with various wasting diseases and 10 heads of normal healthy piglets using polymerase chain reaction (PCR), and the diagnostic efficacy of PCR was evaluated. The prevalence of the PCR-positive by specimens from the diseased piglets were 83.3% in sera and 33.3% in nasal swabs. In the normal healthy group, the PCR-positive rates of sera and nasal swabs were 40% and 30%, respectively. Ten piglets (25.0%) out of 40 showed the simultaneously positive results in both of sera and nasal swabs. According to this result, it was found that the serum specimen was the most appropriate sample for detection of PCMV by PCR. The nucleotide sequence homology of DNA polymerase gene of PCMV KS1 as compared with the reference strain of PCMV (GenBank accesson no.AF027217) was 99.0%.