• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1335-1338
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• 2004

1990 년대 이후 초고속인터넷 확산으로 인해 전자 상거래 서비스가 급속히 확산되고 있다. SLA란 서비스 제공자와 고객간의 협약으로 서비스 제공자가 서비스 품질을 보증하기 위한 제도이다. 전자 상거래 시스템은 비즈니스 트랜잭션이 처리되어야 하므로 QoS 보장은 매우 중요함에도 불구하고, 전자 상거래를 위한 SLA에 대한 연구는 아직 미진한 상태이다. 본 논문에서는 전자 상거래 서비스의 QoS 측정 지표를 정의한 후 자동화된 처리가 가능한 SLA 관리 프레임워크를 설계하고 서버 환경 장애 발생 시 장애 복구에 대한 처리 흐름을 제안한다.

• KIPS Transactions on Software and Data Engineering
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• v.2 no.6
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• pp.369-376
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• 2013

Finance Information System is critical national infrastructure. Therefore it is important to select variables of defect causal factor for the system defect management effectively. We research and analyze detected errors in A Company's Finance Information System for three years. In the result of research and analysis, we have selected 9 variables of defect factor: the trading volume, the fluctuation of KOSDAQ index, and the number of public announcements, etc. Then we have assumed that these variables affect real system errors and analyzed correlation between the hypothesis and the detected system errors. After analyzing, we have extracted the trading volume, the number of orders and fills, changing tasks, and the fluctuations of NASDAQ index as valid variables of defect factor. These variables are proposed for failure prediction model as the variables to manage defects in the finance information system afterward.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.1317-1320
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• 2009

최근 인터넷의 급속한 발전과 컴퓨터 및 네트워크 기술이 점차 보편화 됨에 따라 다양한 정보를 제공하는 서비스들이 증가하고, 서비스를 제공하는 시스템 또한 사용 영역이 지속적으로 확대되고 있다. 이렇듯 다양한 서비스를 제공하는 시스템을 효율적으로 관리하고 여러 이유로 발생하는 장애를 능동적으로 감지하여 해결할 수 있는 기술은 최근 중요한 연구 이슈 중 하나가 되었다. 본 논문은 관리자의 편의성을 고려하여 웹 기반 방식의 관리 시스템을 제공함과 동시에 실시간 장애관리 시스템을 설계 및 구현하였다. 또한 장애가 발생한 시스템을 정확하고 신속히 감지하기 위해 실시간으로 장애 정보를 수집 후, 이를 관리자에게 SMS 서비스로 알려주는 시스템을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.671-672
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• 2020

발달 장애 아동은 사회생활을 위한 언어 훈련을 진행하고 있다. 언어 훈련은 상황에 맞는 질문에 대한 답변과 행동을 위한 교육이다. 본 연구는 발달 장애 아동의 발음학습을 위해 가상상담 시스템 구축 방법론을 적용한다. 발달 장애 아동 교육을 위해서는 각 상황에 맞는 질문과 답변 등을 구성하여 교육한다. 가상상담 구축도 시나리오 형태로 시스템을 구축한다. 본 연구는 가상상담 시스템 구축 방법론을 활용하여 발달 장애 아동 발음학습을 구현하는 방법을 제시하도록 하겠다.

• Korean Journal of Psychosomatic Medicine
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• v.24 no.1
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• pp.54-60
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• 2016

Alexithymia is characterized by difficulties identifying and describing feelings, impoverished fantasy life, and concrete and poorly introspective thinking. Alexithymic patients have been reported to show a stable deficit with regard to processing and regulating emotions. Eating disorders are characterized by a persistent disturbance of eating or eating-related behavior that significantly impairs physical health or psychosocial functioning. Like alexithymic patients, patients with eating disorders show the impaired capacity to process and regulate emotions. There is a robust body of literature showing patients with eating disorders are more alexithymic than healthy controls. Specifically, patients with eating disorders experience difficulties identifying and describing emotions. Childhood maltreatment can increase the risk for depression and alexithymia, which can in turn lead to disordered eating symptoms. Also, higher levels of alexithymia are correlated with a less favorable clinical outcome in patients with eating disorder. Therefore, treatments to help processing and regulating emotions of eating disorder patients with pronounced alexithymic traits may seem to lead to a higher possibility of recovery.

• Therapeutic Science for Rehabilitation
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• v.13 no.2
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• pp.9-25
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• 2024

Objective : Children with autism spectrum disorder (ASD) commonly suffer from feeding disorders. Major feeding problems include mealtime behavior problems, picky eating, and a lack of food variety can lead to nutritional problems, developmental and social limitations, and stress for the caregivers. A review of the latest literature was conducted to gain an in-depth understanding of assessment tools for feeding disorders in children with ASD. Method : This study analyzed assessments to identify feeding problems in ASD based on previous studies searched through keywords such as ASD, ASD feeding problem, and ASD feeding evaluation. Results : The ASD feeding disorder assessment was divided into direct and indirect assessments. Indirect assessment, in which caregivers measure a child's situation using questionnaires, is mainly used. The assessment of feeding disorders in children with ASD was divided into 1) mealtime behavior, 2) sensory processing, 3) food consumption, and 4) others. Conclusion : As the main feeding disorder characteristics of children with ASD are very diverse, a comprehensive evaluation is necessary but is still limited. Swallowing rehabilitation experts, such as occupational therapists, should apply comprehensive assessment tools based on a basic understanding of the feeding problems, behaviors, and sensations in ASD.

• The KIPS Transactions:PartD
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• v.14D no.6
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• pp.689-700
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• 2007

Organizations and customers lose if business activities we discontinued by an incident of information systems under the current business environment because they pursue real time enterprise and on demand enterprise. The loss includes the intangible decline in brand image, customer separation, and the tangible loss such as decrease in business profits. Thus. it is necessary to have preparedness in advance and mitigation for minimization of a loss due to the business discontinuity and information system's operational risks. This paper suggests the mitigation model for minimizing the incidents of disk unit in information system's operational risks. The model will be represented by a network model which is composed of the three items as following: (1) causes, attributes, indicators of an operational risk, (2) a periodic time through an analysis of historical data, (3) an index or a regulation related to the examination of causes of an operational risk.

• Development and Reproduction
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• v.6 no.1
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• pp.25-30
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• 2002

Endocrine disruptors have been reported to adversely affect reproduction and embryonic development in wild animals. One of the major abnormalities observed during early embryonic development is cellular fragmentation. In this study, we exposed mouse preimplantation embryos to PCB, BPA and DDT in vivo or in vitro. Embryos exposed to endocrine disrupter showed a variety of morphological abnormalities such as fragmentation, irregular blastomeres and cracked empty zonae pellucidae. To investigate the levels of gene expression related which genes contribute to apoptosis in preimplantation mouse embryos, we carried out the reverse transcription polymerase chain reaction to assess mRNA levels far apoptotic gene. Bcl-2, bad and bax expression levels were compared between control group and endocrine disrupter treated group. Expression level of bcl-2 gene tended to be lower in the treated group than control while expression levels of bad and bax genes were higher in the treated group. Results of this study may provide a useful tool for rapidly screening developmental toxicants in preimplantation embryos exposed to endocrine disruptors in vivo or in vitro.

• Journal of The Korean Society of Grassland and Forage Science
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• v.13 no.1
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• pp.31-37
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• 1993

It is important to improve the germination of grass seeds because they are poor germination under water stress. This experiment was conducted to investigate the response of seeds pre-treated individually with Polyethylene glycol 6000 (PEG) and growth regulators(GA$_3$, Kinetin, NAA) on the germination characteristics when two levels of osmotic potential (0, -5 bar) were put to seeds of Orchardgrass. In the untreated seeds, the total germination rate was decreased under water stress, and the mean germination time was delayed. Priming of Orchardgrass seeds using PEG or GA$_3$ resulted in improved germination under water stress(-5 bar), whereas the opposite was true of kinetin or NAA. The response of seeds primed in solutions of either -15 bar PEG or 100 ppm GA$_3$ was particulary marked compared with the untreated seeds. It is suggested that PEG and GA$_3$ may have positive regulatory effects in triggering the system for water stress alleviation. But the inhibitory effect of the water stress was not completely removed by allowing the seeds to pre-treat in solution of PEG or GA$_3$.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2003.05a
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• pp.443-450
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• 2003

양방향 모바일 시스템 구현을 통해 예약 확인 시스템을 구축하고 예약 손실 방지에 대한 이점을 선보인바 있다. 하지만 이런 시스템도 안정성 및 신뢰성이 떨어진다면 사용자에게 불편함을 가져오며 따라서 양방향 SMS 시스템의 근본 취지 마저도 무너지게 된다. 본 논문에서는 양방향 SMS 시스템의 안정성과 신뢰성을 높이고 일정 수준 이상의 성능을 유지하기 위해 대규모 transaction 처리 및 장애 방지 기술을 도입하여 사용자에게 신뢰성 있는 편안한 서비스를 제공하고, 또한 모바일 시스템 및 네트워크의 효율적인 transaction 처리 구현을 시도하였다.