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웹 어플리케이션 서버 기반의 인트라넷 시스템 설계 및 구현
이형묵,윤영미 京畿專門大學 1999 京畿專門大學 論文集 Vol.- No.27
Internet has been applied to information technology business and extends to the whole industrial world. As the most effective way of information propagation in an organization, implementing an intranet system makes a distinctive progress and various implementation methodology has been introduced. Our study proposed a solution for the intranet system commanding an university administrial and educational tasks making a comparison and an analysis among various intranet system implementation technologies, identified business requirements processes, implemented the intranet system based on this framework, and applied the system to our college.
소프트 절환이 가능한 계통 연계형 CTTS 시스템 구성에 관한 연구
이형묵,양지훈,이정환,박성미,박성준 한국산업융합학회 2018 한국산업융합학회 논문집 Vol.21 No.6
This paper proposes a grid - connected CTTS system that can be soft switched to meet the government’s effective resource allocation policy for emergency generator. In order to eliminate the system instability caused by the large inrush current generation in the system switching, a new virtual rotation coordinate method for the dissimilar power source is proposed. The proposed virtual rotation coordinate method improves the voltage detection accuracy of the voltage difference of the dissimilar power supply, and it is proved that the synchronous switching characteristic is excellent. In addition, zero current and system stabilization can be achieved by realizing zero current when blocking CTTS with instantaneous reactive power control. Simulation was carried out to verify the validity of the proposed method, and the 500[kVA] system was fabricated and verified to demonstrate the superiority of the proposed method
Pediatric perioperative fluid management
이형묵,김진태 대한마취통증의학회 2023 Korean Journal of Anesthesiology Vol.76 No.6
The purpose of perioperative fluid management in children is to maintain adequate volume status, electrolyte level, and endocrine system homeostasis during the perioperative period. Although hypotonic solutions containing glucose have traditionally been used as pediatric maintenance fluids, recent studies have shown that isotonic balanced crystalloid solutions lower the risk of hyponatremia and metabolic acidosis perioperatively. Isotonic balanced solutions have been found to exhibit safer and more physiologically appropriate characteristics for perioperative fluid maintenance and replacement. Additionally, adding 1–2.5% glucose to the maintenance fluid can help prevent children from developing hypoglycemia as well as lipid mobilization, ketosis, and hyperglycemia. The fasting time should be as short as possible without compromising safety; recent guidelines have recommended that the duration of clear fluid fasting be reduced to 1 h. The ongoing loss of fluid and blood as well as the free water retention induced by antidiuretic hormone secretion are unique characteristics of postoperative fluid management that must be considered. Reducing the infusion rate of the isotonic balanced solution may be necessary to avoid dilutional hyponatremia during the postoperative period. In summary, perioperative fluid management in pediatric patients requires careful attention because of the limited reserve capacity in this population. Isotonic balanced solutions appear to be the safest and most beneficial choice for most pediatric patients, considering their physiology and safety concerns.