• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 가을 학술발표논문집 Vol.29 No.2 (2)
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• pp.43-45
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• 2002

EJB는 컴포넌트 기반 개발(CBD)을 지원하는 컴포넌트 모델중의 하나이며 최근 특어 EJB를 이용한 활발한 어플리케이션이나 시스템 구축이 이루어지고 있다. 최근 증가하고 있는 EJB 컴포넌트들을 효율적으로 재사용 하기 위한 필요성이 대두되고 있다. 본 논문에서는 EJB 컴포넌트 타입 중 엔터티 빈들 간의 조립을 목적으로 Dual Persistent 엔터티 빈 괘턴을 이용한 효율적인 엔터티 빈 조립 방법을 제안하여 기존에 영속성에 대한 종속성이 강해 재사용이 쉽지 않던 BMP 엔터티 빈을 영속성이 독립적인 CMP 엔터티 빈으로 변환해 재사용 향상된 조립을 한다.

• The Korean Journal of Pain
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• 제25권2호
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• pp.105-107
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• 2012

A 41-year-old male patient presented with idiopathic persistent hiccups. The hiccups did not respond to pharmacologic treatments including cisapride, omeprazole, and baclofen. Phrenic nerve block was also ineffective. However, the persistent hiccups were successfully treated with short-term positive pressure ventilation using a short-acting muscle relaxant.

• Journal of Dental Anesthesia and Pain Medicine
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• 제22권1호
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• pp.67-70
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• 2022

Persistent idiopathic facial pain is a rare and difficult condition to treat. Several pharmacological, nonpharmacological, and invasive treatment options have been used, with varying results. We report the case of a patient with intractable persistent idiopathic facial pain who responded favorably to a combination of botulinum toxin injections and pulsed radiofrequency treatment of the infraorbital nerve.

• 한국초전도ㆍ저온공학회논문지
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• 제5권1호
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• pp.92-96
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• 2003

This paper deals with the characteristics of persistent current switch (rCS) system fer applied HTS magnet system. To apply the high-Tc superconductor in superconducting machine such as motror, generator, MAGLEV, MRI, and NMR, the study on high-Tc superconducting persistent current mode must be performed. In this experiment, the PCS system consists otd superconducting magnet, PCS and magnet power supply. The superconducting magnet was fabricated by connecting four double pancake coils (DPCs) in series. The PCS was inductive double pancake coil type and heated up by the SUS 303L tape heater. The optimal length of PCS was calculated and thermal quench state of PCS was simulated by using finite element method(FEM) and compared with experimental results. The optimal energy to normalize the PCS was calculated and introduced. Finally, the persistent current was observed with respect to various ramping up rate and magnitude of charging current.

• 한국초전도저온공학회:학술대회논문집
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• 한국초전도저온공학회 2001년도 학술대회 논문집
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• pp.72-75
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• 2001

The persistent current mode operation of HTS coils is one of the key technologies required for very high-field MRI magnets composed of LTS and HTS coils. But to date, the fabrication of persistent current mode system using HTS is not investigated well. In this paper, we fabricated the magnet and PCS using by BSCCO-2223 tape and jointed them with solder. The current decay behavior of the circuit was measured in liquid nitrogen by monitoring the magnetic field in the centre of magnet with a Hall sensor. To enhance the characteristic of persistent current mode system, superconducting joint method should be investigated.

• 한국통신학회논문지
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• 제15권6호
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• pp.506-515
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• 1990

본 연구는 근거리 통신망(Local Area Network:LAN)에서 slotted 1-persistent CSMA/CD 버스 프로토콜의 실효 전송을 (throughput) 특성을 연구하기 위한 시뮬레이션 알고리즘을 제안하고, 기존 시뮬레이션 알고리즘의 통계적 결과와 비교하여 제안된 알고리즘의 타당성을 검증하였다. 제안된 시뮬레이션 알고리즘은 각 스테이션들을 충돌 경험 횟수로 분류 각 그룹의 영향을 처리하였으므로, 각 스테이션의 영향을 처리한 기존의 알고리즘 보다 처리과정이 효율적이다. 또한 스테이션의 수를 증가 시켜도 처리과정이 제한받지 않기 때문에 Busy/Idle 발생기에 적용하기에 매우 적합하다.

• 대한후두음성언어의학회지
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• 제8권2호
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• pp.225-231
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• 1997

The persistent and recurrent dysphonia after microlaryngeal surgery was noted in tweleve patients. We reviewed the results of laryngostroboscopy, psychoacoustic evaluation, aerodynamic study and acoustic analysis according to the treatment modality. The causes of persistent dysphonia were attributed to vocal cord scarring, recurrent mass lesion, residual mass lesion, persistent inflammation, and hyperfunctional voice disorder. We noticed the better vocal function in the group treated with voice therapy or surgical therapy than the group treated with voice rest and medication. Therefore, we concluded that vocal function can be improved with the use of active, multidisciplinary approach which includes voice therapy, medical treatment and selected surgical resection according to the laryngeal lesions.

• 디지털산업정보학회논문지
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• 제16권1호
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• pp.67-78
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• 2020

Typical security solutions such as intrusion detection system are not suitable for detecting advanced persistent attack(APT), because they cannot draw the big picture from trivial events of security solutions. Researches on techniques for detecting multiple stage attacks by analyzing the correlations between security events or alerts are being actively conducted in academic field. However, these studies still use events from existing security system, and there is insufficient research on the structure of the entire security system suitable for advanced persistent attacks. In this paper, we propose an attack path and intention recognition system suitable for multiple stage attacks like advanced persistent attack detection. The proposed system defines the trace format and overall structure of the system that detects APT attacks based on the correlation and behavior analysis, and is designed with a structure of detection system using deep learning and big data technology, etc.

• 한국군사과학기술학회지
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• 제22권5호
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• pp.667-673
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• 2019

We present an orienteering problem with unknown stochastic reward(OPUSR) model for persistent monitoring tasks with unknown event probabilities at each point of interest. Prior studies on orienteering problem for persistent monitoring task assume that rewards and event probabilities are known as a prior. In this paper, we propose a stochastic reward model with unknown event statistics and a path re-planning algorithm based on Bayesian reward inference. Experiments demonstrate the efficiency of our method.

• Journal of Dental Anesthesia and Pain Medicine
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• 제19권2호
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• pp.77-82
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• 2019

It is well known that trigeminal nerve injury causes hyperexcitability in trigeminal ganglion neurons, which become sensitized. Long after trigeminal nerve damage, trigeminal spinal subnucleus caudalis and upper cervical spinal cord (C1/C2) nociceptive neurons become hyperactive and are sensitized, resulting in persistent orofacial pain. Communication between neurons and non-neuronal cells is believed to be involved in these mechanisms. In this article, the authors highlight several lines of evidence that neuron-glial cell and neuron macrophage communication have essential roles in persistent orofacial pain mechanisms associated with trigeminal nerve injury and/or orofacial inflammation.