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향상된 Fingerprinting 무선측위 기법을 적용한 공장내 영역별 주파수 관리 기법
홍애란(Aeran Hong),김광열(Kwangyul Kim),김진오(Jinoh Kim),신요안(Yoan Shin) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
In an Ubiquitous industrial environment M2M (Machine-to-Machine) wireless communication is an important method for remote controlling the machines. However, WLAN (Wireless Local Area Network), ZigBee, and Bluetooth for M2M occupy the same ISM (Industrial Science Medical) band and this may cause frequency interferences between different machines. To address this issue, we propose in this paper to employ a location-based frequency interference management using Fingerprinting in industrial environments and its advanced localization schemes. Simulation results indicate that the proposed scheme reduces distance error, frequency interference, and any potential danger may be responded immediately by continuous tracing of the locations.
Machine-to-Machine 통신 환경에서 무선측위를 이용한 영역 기반의 주파수 간섭 관리 기법
홍애란(Aeran Hong),김광열(Kwangyul Kim),신요안(Yoan Shin) 대한전자공학회 2011 대한전자공학회 학술대회 Vol.2011 No.12
In an industrial environment, M2M (Machine-to-Machine) communication is an important method for controlling the machine. Especially, WSN(Wireless Sensor Network) is used for sensing the machine condition and communicating to human device. However, frequency interference is occurred in WSN since ZigBee, Bluetooth, and WLAN (Wireless Local Area Network) are using the same ISM (Industrial Science Medical) band. Therefore, we proposed a novel management scheme of frequency interference by using wireless localization.
폐교시설의 고령자 복지주택으로 활용 적합성 연구 - 충청남도를 중심으로 -
홍애리(Hong, Ae-RI),동재욱(Dong, Jae-Uk),최명진(Choi, Myeong-Jin),김희종(Kim, Hee-Jong) 대한건축학회 2024 대한건축학회 학술발표대회 논문집 Vol.44 No.1
Due to industrialization and urbanization, the population of rural areas has decreased due to the concentration of large cities and the phenomenon of migration, and the number of schools closed in rural areas is steadily increasing due to the decrease in fertility rates and school-age population. On the other hand, as the elderly population rapidly increases, the expansion of residential facilities for the elderly is urgently required. Therefore, it is necessary to expand residential facilities for the elderly by utilizing idle facilities of existing local facilities. In preparation for the upcoming aging era, this study proposes residential facilities for the elderly by utilizing closed schools that can continue to live without significantly deviating from the existing living area for the elderly in urban, rural, and fishing villages.
Adult Onset Still`s Disease의 임상적 고찰
홍애라 ( Ae Ra Hong ),송창호 ( Chang Ho Song ),이지수 ( Ji Soo Lee ),마경애 ( Kyung Ae Ma ),박종석 ( Chong Seong Park ),이찬희 ( Chan Hee Lee ),이수근 ( Soo Kon Lee ) 대한류마티스학회 1997 대한류마티스학회지 Vol.4 No.1
Objective: To understand the clinical manifestations and disease course of adult onset Still`s disease (AOSD). Methods: 15 patients of AOSD diagnosed at Severance hospital, Yonsei University College of Medicine were retrospectively analysed in the period of September 1988 to September 1995. Results: There were 3 men and 12 women (male to female ratio of 1:4). Age of disease onset ranged from 17-55 years, and over 86% of the patients were younger than age 40 at disease onset. The prevalence of clinical features were as follows: fever (100%), arthritis (93%), skin rash (93%), sore throat (60%), abnormal liver function (73%), lymphadenopathy (47%), splenomegaly (47%), hepatomegaly (20%), serositis (13%). Fever was the most common initial symptom. Common labaratory features were leukocytosis with neutrophilia (87%), anemia; Hgb<10 g/dL (67%), increased serum ferritin (83%), ESR (87%) and CRP (93%). Serum ferritin was markedly raised at disease onset and correlated with disease activity. In 2 patients, the disease was controlled with NSAID alone, but most of the patients required steroid to control the disease activity. In 6 patients, MTX was added for steroid sparing effect and for steroid resistant arthritis. Most of AOSD patients had intermittent and chronic disease course. Root Joint arthritis and polyarthritis were factors associated with chronicity. Conclusion: The clinical features of AOSD in our study generally resemble previous reports. Serum ferritin was a useful marker of disease activity. Most patients of AOSD had intermittent and chronic disease course. Root joint athritis and polyarticular pattern at disease onset were factors associated with chronicity.
가을철 열성 질환의 감별진단에서 혈청 ADA의 진단적 의의
서병기,홍애라,용석중,안강현,김도훈,송광선,신계철 대한감염학회 1996 감염 Vol.28 No.6
목적 : 혈청 ADA는 대식세포계를 활성화시키는 감염성 질환에서 증가하는 것으로 알려져 있다. 이에 저자들은 가을철 열성질환의 원인 질환으로 흔히 발생하는 쯔쯔가무시병, 렙토스피라증, 신증후 출혈열 환자들의 혈청 ADA 를 측정하므로해서 이 질환들의 조기 감별진단에 도움을 줄 수 있는 지에 대하여 알아보고자 하였다. 방법 : 대상은 혈청학적 검사로 확인된 쯔쯔가무시병 15예, 신증후 출열열9예, 렙토스피라증 7예로 모두 31예였으며 이들의 혈청학적 진단은 간접면역형광법 및 particle agglutination법을 사용하였다. 혈청 ADA는 colorimetry법으로 측정하였다. 결과 : 1) 쯔쯔가무시병군이 렙토스피라증군과 신증후 출혈열군에서보다 유의하게 혈청 ADA의 활성이 높았다(p<0.01). 2) 기존의 보고들과 큰 차이없이 신증후 출혈열군이 쯔쯔가무시군보다 유의하게 신병증의 소견이 현저하였으며, 혈소판 수가 유의하게 적었다. 결론 : 열성 질환의 조기감별에서 혈청 ADA측정이 쯔쯔가무시병을 진단하는데 도움을 줄 것으로 생각된다. Objectives : Serum adenosine deaminase(ADA) activity is increased in various diseases such as liver diseases, tuberculosis, typhoid fever and certain hematopoietic malignancies. Serum ADA seems to originate exclusively from the monocyte/macrophage lineage in such diseases. So we investigated the value of serum ADA determination for the early differential diagnosis of serologically verified scrub typhus, hemorrhagic fever with renal syndrome(HERS) and leptospirosis. Methods : Serum ADA values were determined by colorimetry methods. Fifteen cases of serologically confimed scrub typhus were compared with 9 cases of HERS and 7 cases of leptospirosis. Indirect immunofluorescence assay was performed for scrub typhus and leptospirosis, while HERS was diagnosed by particle agglutination test. Results : Serum ADA values were significantly higher in scrub typhus(85.55 ±20.7U/L) than in hemorrhagic fever with renal syndrome(39.6 ±26U/L)or leptospirosis(38.3 ±15.1U/L)(p<0.01). Proteinuria and thrombocytopenia were significantly more common in patients with HERS than in scrub typhus or leptospirosis. Conclusion : Serum ADA measurement may he useful in early differentiation of scrub typhus from hemorrhagic fever with renal syndrome and leptospirosis before serological confirmation.