• Clinical and Experimental Pediatrics
• /
• 제45권11호
• /
• pp.1430-1434
• /
• 2002

저자들은 성장 장애, 만성적인 구토, 저칼륨혈증, 저염소성 대사성 알카리혈증, 고레닌혈증, 고알도스테론혈증, 정상 혈압과 부종결여 등의 Bartter 증후군의 임상형태를 보였으나 요중 클로라이드 농도가 감소되어 있고 초음파 검사상 비후성 유문 협착증으로 진단수술 후 칼륨과 프로스타글란딘 억제제 등의 약물치료 없이도 회복된 가성 Bartter 증후군을 1례 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• 한국통신학회논문지
• /
• 제27권11C호
• /
• pp.1046-1054
• /
• 2002

본 논문에서는 복구시간의 최소화 및 효율적인 복구 자원 사용을 위한 서브네트워크 기반의 세그먼트 복구 방법을 제안한다. 또한 서브네트워크의 분할에 있어서의 특성을 분석하여 서브네트워크의 크기와 그에 따른 자동복구 방법의 성능을 비교하고 분석한다. 세그먼트 복구는 대규모 통신망을 다수개의 소규모 서브네트워크로 분할하고, 각 서브네트워크 구간에 설정되어있는 세그먼트 별로 자동복구를 수행한다. 시뮬레이션 결과에서 세그먼트 자동복구 방법이 링크 자동복구보다는 복구 자원 사용 면에서 우수하였고 경로 자동복구보다는 복구시간 면에서 장점을 가지는 것을 확인할 수 있었다.

• Journal of Chest Surgery
• /
• 제48권3호
• /
• pp.210-213
• /
• 2015

Venoarterial extracorporeal membrane oxygenation (VA ECMO) is widely used in patients with cardiogenic shock. Insufficient decompression of the left ventricle (LV) is considered a major factor preventing adequate LV recovery. A 40-year-old male was diagnosed with acute myocardial infarction, and revascularization was performed using percutaneous stenting. However, cardiogenic shock occurred, and VA ECMO was initiated. Severe LV failure developed, and percutaneous transaortic catheter venting (TACV) was incorporated into the venous circuit of VA ECMO under transthoracic echocardiography guidance. The patient was successfully weaned from VA ECMO. Percutaneous TACV is an effective, relatively noninvasive, and rapid method of LV decompression in patients undergoing VA ECMO.

• Journal of Communications and Networks
• /
• 제9권4호
• /
• pp.428-437
• /
• 2007

Along with the development of network, more and more functions and services are required by users, while traditional network fails to support all of them. Although overlay is a good solution to some demands, using them in an efficient, scalable way is still a problem. This paper puts forward a framework on how to construct an efficient, scalable overlay mesh in real network. Main differences between other overlays and ours are that our overlay mesh processes some nice features including class-of-service(CoS) and traffic engineering(TE). It embeds the end-to-end optimal traffic control law which can distribute traffic in an optimal way. Then, an example is given for better understanding the framework. Particularly, besides good scalability, and failure recovery, it possesses other characteristics such as routing simplicity, self-organization, etc. In such an overlay mesh, an applicable source routing scheme called hierarchical source routing is used to transmit data packet based on UDP protocol. Finally, a guideline derived from a number of simulations is proposed on how to set various parameters in this overlay mesh, which makes the overlay more efficient.

• 대한설비공학회:학술대회논문집
• /
• 대한설비공학회 2008년도 하계학술발표대회 논문집
• /
• pp.30-35
• /
• 2008

This paper describes a fault detection and diagnosis (FDD) system developed for the heat source apparatus in building air-conditioning system. As HVAC&R systems in building become complex and instrumented with highly automated controllers, the processes and systems get more difficult for the operator to understand and detect the mal-functions. Poorly maintained, degraded, and improperly controlled equipment wastes an estimated 15% to 30% of energy used in commercial building. When operating a complex facility, FDD system is beneficial in equipment management to provide the operator with tools which can help in decision making for recovery from a failure of the system. Automated FDD for HVAC&R system has the potential to reduce energy and maintenance costs and improves comfort and reliability. Over the last decade there has been considerable research for developing FDD system for HVAC&R equipment. However, they are being made too much of a theoretical study, so only a small of FDD methods are deployed in the field. This study deduced an actual defect source for the heat source apparatus and suggested a low price FDD method which is ready to be deployed in the field.

• Journal of Information Technology Applications and Management
• /
• 제14권3호
• /
• pp.95-113
• /
• 2007

To minimize IT operational risks and the opportunity cost for lost business hours. it is necessary to have preparedness in advance and mitigation activities for minimization of a loss due to the business discontinuity. There are few cases that banks have a policy on systematic management, system recovery and protection activities against system failure. and most developers and system administrators response based on their experience and the instinct. This article focuses on the mitigation model development for minimizing the incidents of disk unit in IT operational risks. The model will be represented by a network model which is composed of the three items as following: (1) the risk factors(causes, attributes and indicators) of IT operational risk. (2) a periodic time interval through an analysis of historical data. (3) an index or an operational regulations related to the examination of causes of an operational risk. This article will be helpful when enterprise needs to hierarchically analyze risk factors from various fields of IT(information security, information telecommunication, web application servers and so on) and develop a mitigation model. and it will also contribute to the reduction of operational risks on information systems.

• 한국군사과학기술학회지
• /
• 제15권6호
• /
• pp.770-778
• /
• 2012

In this paper, we propose a multi-path construction scheme to improve the survivability of a multicast session in military hybrid networks. A military hybrid network consists of a static backbone network and multiple mobile stub networks where some nodes are frequently susceptible to be disconnected due to link failure and node mobility. To improve the survivability of multicast sessions, we propose a construction scheme of ${\kappa}$ redundant multi-paths to each receiver. In order to take account of different characteristics of static and mobile networks, we propose quite different multi-path setup approaches for the backbone and stub networks, respectively, and combine them at the boundary point called gateway. We prove that our proposed scheme ensures that each receiver of a multicast session has ${\kappa}$ redundant paths to the common source. Through simulations, we evaluate the performance of the proposed schemes from three aspects : network survivability, recovery cost, and end-to-end delay.

• Parasites, Hosts and Diseases
• /
• 제53권2호
• /
• pp.233-236
• /
• 2015

A total 7 outbreaks of trichinellosis have occurred in Korea, mostly as a result of consumption of raw wild boar (Sus scrofa) meat. Since only 1 serological survey on wild boars had yet been performed in Korea, the present study aimed to estimate the prevalence of trichinellosis in wild boars and some species of rodents by artificial digestion and serological examinations in Yanggu-gun, Gangwon-do, the endemic area of trichinellosis. Both the wild boar and rodent muscle samples revealed no Trichinella larvae by direct examination and artificial digestion method. However, serological examinations revealed that 4 wild boar sera samples out of 118 (3.4%) were positive to Trichinella antigen. Although the recovery of Trichinella larvae ended in a failure, it is proved for the first time that the sylvatic cycle of Trichinella has been maintained in wild boars of Gangwon-do, Korea.

• 대한임베디드공학회논문지
• /
• 제6권6호
• /
• pp.369-376
• /
• 2011

Since wireless sensor networks generally have the capability of network recovery, malfunction of a few sensor nodes in a sensor network does not cause a crucial problem paralyzing the sensor network. The malfunction of the sink node, however, is critical. If the sink node of a sensor network stops working, the data collected by sensor nodes cannot be delivered to the gateway because no other sensor nodes can take the place of the sink node. This paper proposes a TDMA-based wireless sensor network equipped with dual sink nodes, with a view to preventing data loss in the case of malfunction of a sink node. A secondary sink node, which synchronizes with a primary sink node and receives data from other sensor nodes in normal situations, takes the role of the primary sink node in the case of malfunction of the primary sink, thereby eliminating the possibility of data loss. The effectiveness of the proposed scheme is demonstrated through experiments.

• 대한한방부인과학회지
• /
• 제34권1호
• /
• pp.15-33
• /
• 2021

Objectives: The purpose of this paper is to help the development of qualitative research in the field of Korean medicine and policy support for postpartum depression. Methods: Qualitative studies related to postpartum depression retrieved from five databases were evaluated independently by two researchers using the integrated criterion, Consolidated criteria for reporting qualitative research (COREQ). In addition, each subject of study was qualitatively synthesized. Results: A total of 1,374 papers were searched and 13 papers were finally selected. The results of the study using COREQ lacked information about the researchers. The results of the study were integrated into three themes: "Feeling Failure", "Struggling for self-identity and role of mother" and "Seeing Help and Recovery". Conclusions: Postpartum depression can be accessed through various methods such as Korean medicine counseling, acupuncture and herbal medicine, and further research and manual preparation is required.