• 대한안전경영과학회지
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• 제3권3호
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• pp.11-21
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• 2001

Domestic construction industry has considerable level of construction performance and technology thanks to the economic development and as the result of performing diverse oversea construction project. However, construction disasters have been steadily increasing, and do severe disasters at faster pace. Most of such disasters happen at small and small medium-sized construction fields, which contract size is less than 10 billion won. small and medium-sized construction fields are not obliged to designate a safety manager, and have limitations in engaging self-regulating disaster prevention activities due to reduced budget for safety facilities. For the small and medium-sized construction sites with less than 10 billion won, the Ministry of Labor has been carrying out mobile inspections of construction safety. However, the effect so far is insignificant and an improvement plan is required. Therefore, in the present thesis, we derive problems appearing in the current construction safety mobile inspection system, investigate and study systems in foreign countries, and suggest an efficient and effective plan to operate safety technology inspections. First of all, we establish a standard to select sites to be inspected that are high in construction risk and disaster occurrence probability In addition, we suggest a plan to take administrative and judiciary measures based on the total score for disaster factors considering the disaster occurrence probability and the illegal practices. Furthermore, a scheme to maximize the effect of disaster prevention is sought by building an organic cooperative system between the Ministry of Labor, Korea Occupational Safety ＆ Health Agency and other organizations specialized in instruction of construction disaster prevention. Finally, we induce a research conclusion that leads to self-regulating safety management through checking and instructing systematic management on mobile inspections.

• 대한간호학회지
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• 제41권1호
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• pp.92-100
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• 2011

Purpose: Mortality Provability Model (MPM) II is a model for predicting mortality probability of patients admitted to ICU. This study was done to test the validity of MPM II for critically ill neurological patients and to determine applicability of MPM II in predicting mortality of neurological ICU patients. Methods: Data were collected from medical records of 187 neurological patients over 18 yr of age who were admitted to the ICU of C University Hospital during the period from January 2008 to May 2009. Collected data were analyzed through $X^2$ test, t-test, Mann-Whiteny test, goodness of fit test, and ROC curve. Results: As to mortality according to patients' general and clinically related characteristics, mortality was statistically significantly different for ICU stay, hospital stay, APACHE III score, APACHE predicted death rate, GCS, endotracheal intubation, and central venous catheter. Results of Hosmer-Lemeshow goodness-of-fit test were MPM $II_0$ ($X^2$=0.02, p=.989), MPM $II_24$ ($X^2$=0.99 p=.805), MPM $II_48$ ($X^2$=0.91, p=.822), and MPM $II_72$ ($X^2$=1.57, p=.457), and results of the discrimination test using the ROC curve were MPM $II_0$, .726 (p<.001), MPM $II_24$, .764 (p<.001), MPM $II_48$, .762 (p<.001), and MPM $II_72$, .809 (p<.001). Conclusion: MPM II was found to be a valid mortality prediction model for neurological ICU patients.

• 한국콘텐츠학회논문지
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• 제12권11호
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• pp.236-245
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• 2012

본 연구는 한국과 일본 여자 간호대학생들의 음주행위와 건강증진 생활양식을 파악하고, 과음과 관련있는 건강증진 생활양식을 파악하고자 수행하였다. 연구대상은 한국 간호대학생 304명과 일본 간호대학생 244명이었고, 분석은 건강증진 생활양식 프로파일 II의 차이를 비교했고, 과음과 관련있는 건강증진 생활양식의 하부영역을 분석하였다. 연구 결과 일본학생이 영양습관, 대인관계, 스트레스 관리영역에서 높았고, 영적성장은 한국학생이 높았다. 신체활동은 양국 모두 가장 낮은 점수를 나타냈다. 음주는 한국이 일본에 비해 더 많이, 더 자주 했으며, 과음 여부에 따라 건강증진 생활양식에는 유의한 차이가 없었다. 한국 학생 중 과음의 가능성이 있는 경우는 대인관계점수가 높은 경우와 영적성장점수가 낮은 경우이며, 일본 학생 중에는 건강책임감이 높은 경우였다. 결론적으로 한국에서는 영양습관과 스트레스 관리 교육을, 일본에서는 영적성장영역 강화, 양국 모두 신체활동 영역 강화와 건전한 음주 교육이 필요하다.

• 대기
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• 제27권2호
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• pp.119-131
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• 2017

We present and discuss the Tropopause Folding Turbulence Detection (TFTD) algorithm for the Korean Communication, Ocean, Meteorological Satellite (COMS) which is originally developed for the Tropopause Folding Turbulence Product (TFTP) from the Geostationary Operational Environmental Satellite (GOES)-R. The TFTD algorithm assumes that the tropopause folding is linked to the Clear Air Turbulence (CAT), and thereby the tropopause folding areas are detected from the rapid spatial gradients of the upper tropospheric specific humidity. The Layer Averaged Specific Humidity (LASH) is used to represent the upper tropospheric specific humidity calculated using COMS $6.7{\mu}m$ water vapor channel and ERA-interim reanalysis temperature at 300, 400, and 500 hPa. The comparison of LASH with the numerical model specific humidity shows a strong negative correlation of 80% or more. We apply the single threshold, which is determined from sensitivity analysis, for cloud-clearing to overcome strong gradient of LASH at the edge of clouds. The tropopause break lines are detected from the location of strong LASH-gradient using the Canny edge detection based on the image processing technique. The tropopause folding area is defined by expanding the break lines by 2-degree positive gradient direction. The validations of COMS TFTD is performed with Pilot Reports (PIREPs) filtered out Convective Induced Turbulence (CIT) from Dec 2013 to Nov 2014 over the South Korea. The score test shows 0.49 PODy (Probability of Detection 'Yes') and 0.64 PODn (Probability of Detection 'No'). Low POD results from various kinds of CAT reported from PIREPs and the characteristics of high sensitivity in edge detection algorithm.

• 지능정보연구
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• 제12권4호
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• pp.109-126
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• 2006

성공적인 고객관계관리(CRM : customer relationship management)를 수행하기 위해서는 효과적인 고객 등급화가 필요하다. 일반적으로 고객등급화는 고객별로 LTV를 산정한 다음 일정한 비율로 고객을 분류하여 등급을 정하는 방법이 사용되어 왔다. 그러나 이러한 방법은 등급간의 이질성을 명확하게 반영하지 못하기 때문에 적지 않은 문제점을 내포하고 있다. 본 논문에서는 Holistic Profit을 이용해서 고객을 등급화 하는 방법을 제시하고, A 생명보험회사의 고객자료을 이용해서 이를 검증하였다. Holistic Profit은 신용대출 승인정책에서 승인임계점수(Cutoff Point) 책정에 활용되고 있는 방법들 중의 하나이다. 요약하면, 본 논문의 목적은 Holistic Profit을 활용하여 보다 효과적이고 과학적인 방법으로 고객 등급화 하는 방법의 개발과 검증에 있다. 본 논문에서 제시된 방법을 사용해서 고객을 등급화 함으로써 기업은 보다 효과적인 고객관계관리(CRM)와 마케팅 활동을 수행할 수 있을 것으로 기대된다.

• 한국시뮬레이션학회논문지
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• 제28권2호
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• pp.71-79
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• 2019

본 연구는 비행체의 목표지와 진입방향이 정해졌을 때, 목표지점 3차원 모델의 형상과 비행체의 원형공산오차를 고려하여 최종 목표점을 자동으로 생성해 내는 기법에 대한 것이다. 기존에는 목표점을 사용자가 경험에 의존하여 선정하거나 단순히 중심으로 선정하는 경우가 많았고, 진입방향이 정해지기 전 선정하였기 때문에 최적의 위치를 선정할 수 없었다. 본 연구에서는 진입방향이 결정된 후 자동으로 목표점을 생성하여 이러한 문제들을 해결하고자 하였다. 기법은 크게 참조면 및 진입 후보점을 생성하는 단계, 각 진입 후보점의 점수를 계산하는 단계, 마지막으로 최종 목표점을 계산하는 총 3개의 단계로 이루어져 있으며, 본문에서는 각 단계에 대한 설명과 다양한 테스트케이스를 이용한 실험 결과를 기술한다. 본 연구를 통해 사용자는 비행체가 정상진입이 가능할 확률이 높은 목표점을 손쉽게 확인 및 적용 할 수 있다.

• PNF and Movement
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• 제12권3호
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• pp.151-158
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• 2014

Purpose: The purpose of the study is to see the effect of walking when training for chronic stroke patients, Affected side vision impairment induced gait training with rhythmic auditory stimulation in parallel. Methods: This study was the general walking training group, the training group was divided damage induced affected side view, affected side view damage induced by rhythm auditory stimulation training three groups. Intervention period was 4 weeks. 5 times per week, per 30 min entered arbitration. Affected Side vision impairment induced induction training was conducted by installing a red cones, rhythmic auditory stimulation was applied to a regular rhythm training using a smartphone application (Metronome). Paired t-test was performed to see the difference between each group and before the intervention. One-way ANOVA was used to find out the significance probability between each group. Statistical significance was set at 0.05 probability. Results: Regular walking group, rather than affected side vision guided walking group could see increases in the FGA and DGI (P<0.05). And vision impairment induced affected side view and rhythmic auditory stimulation induction training this group than in the combination group walking group obtained higher scores on the FGA, DGI score(P<0.05). Conclusion: If you want to enforce certain rhythmic auditory stimulation of the visual field and side damage induced during gait training for stroke patients will be able to expect a better effect.

• 한국임상약학회지
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• 제30권4호
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• pp.264-269
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• 2020

Background: Inflammatory diseases can increase the prevalence of anemia. Recent studies confirmed that the prevalence of anemia is increased by atopic dermatitis (AD), a chronic inflammatory disease. Therefore, we aimed to elucidate the correlation between AD severity and prevalence of anemia. Methods: We used data of pediatric patients from the Health Insurance Review and Assessment Service (HIRA-PPS-2016). We included pediatric patients (<18 years) with AD diagnosis who were prescribed medications for AD. We applied a propensity score method with inverse probability of treatment weighting (IPTW) adjusting for differences in prevalence of confounders and performed IPTW logistic regression to evaluate associations between the anemia and severity of AD. Results: In total, 91,501 patients (mild AD: 47,054 patients; moderate-to-severe AD: 44,447 patients) <18 years who were prescribed drugs for AD were analyzed. Analysis of the probability of patients with mild AD and prevalence of anemia as a reference revealed an odds ratio (OR) of 1.159 (95% CI, 1.109-1.212; p<0.001) in moderate-to-severe AD patients, indicating a correlation between anemia prevalence and AD severity. Subgroup analysis according to gender, age group, and type of health insurance revealed there was an association between AD severity and anemia except in patients equal or older than 7 years. Conclusion: The prevalence of anemia increased with AD severity despite adjusting for confounding factors. Our results support the hypothesis that AD can cause anemia, and anemia prevalence could be increased in severe AD patients. Further studies are needed to establish a pathological basis.

• 융합보안논문지
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• 제20권4호
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• pp.81-90
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• 2020

현실 세계에서는 기존에 알려지지 않은 새로운 유형의 변종 공격이 끊임없이 등장하고 있지만, 인공신경망과 지도학습을 통해 개발된 공격 트래픽 분류모델은 학습을 실시하지 않은 새로운 유형의 공격을 제대로 탐지하지 못한다. 기존 연구들 대부분은 이러한 문제점을 간과하고 인공신경망의 구조 개선에만 집중한 결과, 다수의 새로운 공격을 정상 트래픽으로 분류하는 현상이 빈번하게 발생하여 공격 트래픽 분류성능이 심각하게 저하되었다. 한편, 다중분류 문제에서 각 클래스에 대한 분류가 정답일 확률을 결과값으로 출력하는 소프트맥스(softmax) 함수도 학습하지 않은 새로운 유형의 공격 트래픽에 대해서는 소프트맥스 점수를 제대로 산출하지 못하여 분류성능의 신뢰도 또는 정확도를 제고하는데 한계를 노출하고 있다. 이에 본 논문에서는 소프트맥스 함수의 이러한 특성을 활용하여 모델이 일정 수준 이하의 확률로 판단한 트래픽을 공격으로 분류함으로써 새로운 유형의 공격에 대한 탐지성능을 향상시키는 방안을 제안하고, 실험을 통해 효율성을 입증한다.

• 아태비즈니스연구
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• 제13권3호
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• pp.311-328
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• 2022

Purpose - The purpose of this study was to examine the relationship between firm's non financial performance and its shareholder return by analyzing PCA while focusing on the classifying all the variables into three categories such as financial, characteristics, and non financial factors of the firms. Design/methodology/approach - By exploring the pattern of self tender from the 801 firms in KOSPI while focusing on the objective of stock disposal, this paper analyzes the change of shareholder return of the firm. Findings - First, the higher major ownership, the lower self tender gets, whereby the higher ownership by foreigners, the ratio of self tender is higher. Secondly, cash dividend has not significant impact on the disposal of self stock, and the high ratio of ownership by foreigners leads to the high probability of retirement rather than the general disposal. In contrast, the major ownership has a negative impact on the general disposal as well as retirement. Thirdly, the score of non financial factors such as Environment(E), Social responsibility(S), and Governance(G) shows the high value in case of the firms with self tender. More specifically, the firms with retirement has the highest value of ESG while it has the lowest value in case of the firms with general disposal. Research implications or Originality - The retirement which means the active shareholder return is strongly affected by the non financial factors. Specifically, the probability of retirement increases in case of the firms with retirement, and even such a tendency is found to the case of the firms with general disposal.