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인터넷을 이용한 냉동기 모니터링 및 원격 제어 관리방법
지성남(Sung-Nam Ji),장시혁(Si-Hyuk Jang),고설린(Sul-Lin Ko),정봉철(Bong-Chul Chung) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
A Human life is definitely changing as the Internet is developed and supplied. Recently, people and companies can conduct their work by online with various technologies using the Internet. However, lots of equipments in the building are still managed by many engineers. In case of chiller, engineers in building can monitor chiller’s state using their own PLC(Programmable Logic Controller), or other monitoring systems, but they usually require service from manufacturer when the chillers get some problems. Manufacturers would be able to offer better service to customers, and bring a solution quickly if service engineers in the manufacturer can monitor chiller’s state in the service center. In this paper, the remote control system which can control chillers in the service center using the Internet technology is introduced.
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지성미,김성훈,남재식,윤혜주,최정현,이은호,최인철 대한마취통증의학회 2015 Korean Journal of Anesthesiology Vol.68 No.3
Background: The early detection of coagulopathy helps guide decisions regarding optimal transfusion management during cardiac surgery. This study aimed to determine whether rotational thromboelastometry (ROTEM) analysis during cardiopulmonary bypass (CPB) could predict thrombocytopenia and hypofibrinogenemia after CPB. Methods: We analyzed 138 cardiac surgical patients for whom ROTEM tests and conventional laboratory tests were performed simultaneously both during and after CPB. An extrinsically activated ROTEM test (EXTEM), a fibrin-specific ROTEM test (FIBTEM) and PLTEM calculated by subtracting FIBTEM from EXTEM were evaluated. Correlations between clot amplitude at 10 min (A10), maximal clot firmness, platelet count, and fibrinogen concentrations at each time point were calculated. A receiver operating characteristic analysis with area under the curve (AUC) was used to assess the thresholds of EXTEM, PLTEM and FIBTEM parameters during CPB and for predicting thrombocytopenia and hypofibrinogenemia after weaning of CPB. Results: The A10 on EXTEM, PLTEM, and FIBTEM during CPB showed a good correlation with platelet counts (r = 0.622 on EXTEM and r = 0.637 on PLTEM; P < 0.0001 for each value) and fibrinogen levels (r = 0.780; P < 0.0001) after CPB. A10 on a FIBTEM threshold of 8 mm during the CPB predicted a fibrinogen concentration < 150 mg/dl (AUC = 0.853) after CPB. Additionally, the threshold level of A10 on EXTEM during CPB for predicting platelet counts < 100,000 /μl after CPB was 42 mm (AUC = 0.768). Conclusions: EXTEM, PLTEM, and FIBTEM parameters during CPB may be useful for predicting thrombocytopenia and hypofibrinogenemia after weaning of CPB.
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신대윤,지성남 조선대학교 환경연구소 2000 環境硏究 Vol.16 No.1
Human beings are destined to die. After death, the dead body should be taken care of through various procedures by the environment of the region, ideology, cultural custom and the dead's social standing. The cemetery systemt can be classified into two large groups. One is the Burial in Wet-Condition, there are MAE-JANG, the Burial in the earth and SU-JANG, the Burial in the sea. And the other is in Dry-Condition, there are HWA-JANG, cremation by the fire and PUNG-JANG, the dealing by the wind and CHO-JANG, the dealing by the eagle. The grave site system in our contury must be changed to collectivization of scattered grave site, limiting burial time, making the list of the graves, getting rid of neglected graves. The cremation system must be supplemented by a certain ritual to give the surviving family comfort and compensation. The facilities of a crematory must be changed into more high-qualified one to win the people's trust. The remains of the dead can be scattered, laid in a charnel house or in Napkol-t'ap, Yo˘ng-t'ap, So˘k-ch'ong. A cemetery-system-improvement-plan requires strong promotion from national leaders, active educational movement from religious leaders, an effort to change people's idea and a recognition of the problems among the policy makers.
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신대윤,지성남,문옥란,김지영,서동우,조영관,Shin Dae-Yewn,Ji Sung-Nam,Moon Ok-Ran,Kim Ji-Yeong,Suh Dong-Woo,Cho Young-Kwan 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5
The objective of this investigation was to evaluate applicability of precoat filtration that can be substituted for rapid sand filter of conventional water treatment system(CWTS). Precoat filter used in this experiment are candle filter. Element disk of candle are pore size $10{\mu}m(R),\;20{\mu}m(B)$ And diatomaceous earth are cake pore size $3.5{\mu}m$(Standard Super- Cel; A), $7{\mu}m$(Hyflo Super-Cel; B) and $17{\mu}m$(Celite 545RV; C). $2kg/m^2$ diatomaceous earth is used for precoating, it coated candle in $5{\sim}6mm$ thickness. 1. Al adsorption dosages by diatomaceous earth used in experimental we Hyflo Super-Cel 0.843mg/g, Standard Super-Cel 0.782 mg/g and Celite 545RV 0.766 mg/g. 2. Filtrate of precoat filter during 60min are R-C combination 20.7($m^3/m^2$)>B-C 18.3($m^3/m^2$)>B-B 15.0($m^3/m^2$)> R-B 12.9($m^3/m^2$)> R-A 11,093($l/m^2$). 3. Water quality of precoat filter effluent are thus. $KMnO_4$ consumption are $1.10{\sim}2.20mg/l$, removal rate are $30.9{\sim}65.6\%$. They are R-A 1.10(mg/l)(removal rate $65.6\%$). R-C(2.20 mg/l)(removal rate $30.9\%$). 4. $Al^{3+}$ are not detected with all combination, removal rate $100\%$. 5. Considering water quality and flux, continued running time of R-A combination is 7 hr. Accumulated filtrate are $74.4 m^3/m^2$, average flux is $177.2 l/m^2{\cdot}min$. And filtrate per diatomaceous earth 1g are 37.2 l. 6. R-A effluent's water quality are $KMnO_4$ Consumption 1.10(mg/l), DOC 1.161 mg/1, Al 0.0 mg/1, $UV_{254}$ 0.016/cm, Turbidity 0.1(NTU). R-A combination is suitable to precoat filtration for the settling basin effluent treatment.
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장시혁,지성남,정봉철,남임우 대한설비공학회 2005 대한설비공학회 강연회 및 기타간행물 Vol.- No.-
최근 인터넷 망을 통해 원격지에서 기기 제어 및 감시를 가능한 시스템 개발이 활발하다. 인터넷을 통해 제어할 경우 현장에서 동작중인 설비들에 대한 정보를 원격지에서 관리 감독이 용이하여 신속하게 대처할 수 있게 된다. 그리고 인터넷의 특성상 중요 관리자가 원거리로 이동하게 되는 경우에도 인터넷을 통해 접속하여 현장 상황 및 기기의 동작 상태를 쉽게 점검할 수 있어 관리 비용을 절감할 수 있을 것으로 기대되며, 소비자 만족도를 높이고, 제품의 A/S 비용을 절감할 수 있는 효과를 가져 올 수 있다. 또한 하나의 현장에 여러 대의 냉난방기가 설치될 경우 그 현장의 관리실에서도 전체 냉난방기의 원격 제어 및 감시가 가능하기 때문에 비교적 저가의 비용으로 인터넷을 이용한 빌딩 내 중앙 감시 시스템의 구축도 가능하며, 중앙 감시 센터의 메인 서버에서는 전국에 설치된 기기의 데이터를 저장할 수 있다. 그리고 메인 서버에서는 필요에 따라 CRM(Customer Relationship Management) 데이터베이스와도 연동 혹은 단독 데이터베이스를 이용하여 고객관리가 좀 더 용이하게 될 수 있다. 본 논문에서는 소형 흡수식 냉난방기에 인터넷을 이용한 원격 제어 시스템을 구축하여 제품의 A/S가 발생하였을 때 엔지니어가 직접 방문하지 않더라도 원격지에 있는 메인 서버에서 인터넷을 이용하여 제품점검이 가능한 시스템에 관한 연구 내용을 소개하고자 한다.
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신대윤,지성남 조선대학교 환경공해연구소 2000 環境公害硏究 Vol.16 No.1
Human beings are destined to die. After death, the dead body should be taken care of through various procedures by the environments of the region, ideology, cultural custom and the dead's social standing. The cemetery systemt can be classified into two large groups. One is the Burial in Wet-Condition, there are MAE-JANG, the Burial in the earth and SU-JANG, the Burial in the sea. And the other is in Dry-Condition, there are HWA-JANG, cremation by the fire and PUNG-JANG, the dealing by the wind and CHO-JANG, the dealing by the eagle. The grave site system in our contury must be changed to collectivization of scattered grave site, limiting burial time, making the list of the graves, getting rid of neglected graves. The cremation system must be supplemented by a certain ritual to give the surviving family comfort and compensation. The facilities of a crematory must be changed into more high-qualified one to win the people's trust, The remains of the dead can be scattered, laid in a charnel house or in Napkol-t'ap, Yo˘ng-t'ap, So˘k-ch'ong. A cemetery-system-improvement-plan requires strong promotion from national leaders, active educational movement from religious leaders, an effort to change people's idea and a recognition of the problems among the policy makers.
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김정화,허성혁,남효정,윤효철,김의종,이지성,김영서,김현영,고성호,장대일 대한신경과학회 2015 Journal of Clinical Neurology Vol.11 No.4
Background and Purpose Te beneft of carotid endarterectomy (CEA) is directly infuenced by the risk of perioperative adverse outcomes. However, patient-level risks and predictors including coronary stenosis are rarely evaluated, especially in Asian patients. Te aim of this study was to determine the relationship between the vascular risk factors underlying CEA, including coronary stenosis, and postoperative outcome. Methods One hundred and ffy-three consecutive CEAs from our hospital records were included in this analysis. All patients underwent coronary computed tomography angiography before CEA. Data were analyzed to determine the vascular outcomes in patients with mild-tomoderate vs. severe coronary stenosis and high vs. standard operative risk, based on the criteria for high operative risk defned in the Stenting and Angioplasty with Protection in Patients at High Risk for Endarterectomy (SAPPHIRE) trial. Te vascular outcome was defned as the occurrence of postoperative (≤30 days) stroke, myocardial infarction (MI), or death. Results An adverse vascular outcome occurred in 8 of the 153 CEAs, with 6 strokes, 2 MIs, and 3 deaths. The vascular outcome differed significantly between the groups with mild-tomoderate and severe coronary stenosis (p=0.024), but not between the high- and standard-operative-risk groups (stratifed according to operative risk as defned in the SAPPHIRE trial). Multivariable analysis adjusting for potent predictors revealed that severe coronary stenosis (odds ratio, 6.87; 95% confdence interval, 1.20–39.22) was a signifcant predictor of the early vascular outcome. Conclusions Severe coronary stenosis was identifed herein as an independent predictor of an adverse early vascular outcome.
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