• 한국시뮬레이션학회논문지
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• 제27권1호
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• pp.75-90
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• 2018

일반적으로 고객의 만족도를 높이는 방안은 병원의 이익 및 병원 의료진들의 만족도를 높이는 방안과는 상충된다. 이에 본 논문은 병원과 고객을 함께 고려한 평가지표를 사용하여 여러 가지 예약 패턴들을 비교해보고 병원의 효율적인 운영을 위해 성형외과에 적절한 예약 패턴을 제안하고자 한다. 본 논문에서는 도심에 위치한 실제 성형외과의 고객 및 진료 데이터를 이용해 시뮬레이션 모델을 설계하고, 이 모델을 대상으로 5가지 예약 패턴을 비교하였다. 예약 패턴의 강건성을 체크하기 위하여 성수기와 극성수기, 피크 요일과 한적한 요일 등 다양한 상황 하에서 실험을 진행하였다. 실험 결과, 본 연구에서 새롭게 제안하는 Triangle-like Pattern이 예약 수와 관계없이 가장 좋은 결과를 보여주었다.

• 융합정보논문지
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• 제9권12호
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• pp.104-114
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• 2019

본 연구는 아동간호사의 말초정맥주입관리에 대한 인지 및 수행 관련 영향요인 규명을 위해 시행되었다. 수집된 자료를 SPSS/WIN 24.0으로 분석한 결과. 인지와 수행은 4점 만점에 각각 3.34±0.39, 3.42±0.37점이었고, 인지 및 수행 각각의 하위영역 중 '유지와 교환' 및 '교육'이 가장 낮았다. 말초정맥주입관리에 따른 인지와 수행은 근무부서에 따라 유의한 차이를 보였고(p=.039, p<.001), 인지와 수행 간 정적 상관관계(r=.591, p<.001)가 있었다. 위계적 다중회귀분석 결과, 인지에는 수행(β=.57)과 근무부서(β=.22)가, 수행에는 인지(β=.57)와 피교육경험(β=.19)이 영향요인이었고, 인지 및 수행에 대한 각 변수들의 설명력은 각각 41.2%와 41.4%이었다. 결론적으로 말초정맥주입관리의 인지와 수행은 상호 간 영향을 미치는 요인이므로, 말초정맥주입관리의 인지를 향상시킬 방안을 마련함으로써 수행의 증가를 도모할 필요가 있다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제19권4호
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• pp.31-44
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• 2014

In the present study, a few of recently developed geostatistical models are comparatively studied. The models are two-point statistics based sequential indicator simulation (SISIM) and generalized coupled Markov chain (GCMC), multi-point statistics single normal equation simulation (SNESIM), and object based model of FLUVSIM (fluvial simulation) that predicts structures of target object from the provided geometric information. Out of the models, SNESIM and FLUVSIM require additional information other than conditioning data such as training map and geometry, respectively, which generally claim demanding additional resources. For the comparative studies, three-dimensional fluvial reservoir model is developed considering the genetic information and the samples, as input data for the models, are acquired by mimicking realistic sampling (i.e. random sampling). For SNESIM and FLUVSIM, additional training map and the geometry data are synthesized based on the same information used for the objective model. For the comparisons of the predictabilities of the models, two different measures are employed. In the first measure, the ensemble probability maps of the models are developed from multiple realizations, which are compared in depth to the objective model. In the second measure, the developed realizations are converted to hydrogeologic properties and the groundwater flow simulation results are compared to that of the objective model. From the comparisons, it is found that the predictability of GCMC outperforms the other models in terms of the first measure. On the other hand, in terms of the second measure, the both predictabilities of GCMC and SNESIM are outstanding out of the considered models. The excellences of GCMC model in the comparisons may attribute to the incorporations of directional non-stationarity and the non-linear prediction structure. From the results, it is concluded that the various geostatistical models need to be comprehensively considered and comparatively analyzed for appropriate characterizations.

• 한국지하수토양환경학회지:지하수토양환경
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• 제25권2_spc호
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• pp.86-100
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• 2020

Analyzing and monitoring environmental contaminants based on geophysical exploration techniques have become important and it is now widely applied to delineate spatial distribution geophysical characteristics in wide area. Among the techniques, induced polarization (IP) method, which measures polarization effects on electrical potential distribution, has drawn much attention as an effective tool for environmental monitoring since IP is sensitive to changes in biochemical reactions. However, various reactions stemming from the presence of multiple contaminants have greatly enhanced heterogeneity of polluted sites to result in highly variable electrical characteristics of the site. Those contaminants influence chemical and physical state of soil and groundwater to alter electrical double layer, which in turn influences polarization of the media. Since biochemical reactions between microbes and contaminants result in various IP effects, IP laboratory experiments were conducted to investigate IP responses of the contaminated soil samples under various conditions. Field IP surveys can delineate the spatial distribution of contamination, while providing additional information about electrical properties of a target medium, together with DC resistivity. Reviewing IP effects of contaminants as well as IP surveys can serve as a good starting point for the application of IP survey in site assessment for environmental remediation.

• 한국학교보건학회지
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• 제30권3호
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• pp.355-364
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• 2017

Purpose: The purpose of this study was to identify health promotion behaviors of elementary school teachers and investigate the factors influencing the health promotion behaviors. Methods: Data were collected from 234 elementary school teachers in the B Metropolitan City Office of Education from 5th to 30th October, 2016. The collected data were analyzed by descriptive statistics, t-test, ANOVA, $Scheff{\acute{e}}$ test, Mann-Whitney test, Kruskal-Wallis test, Spearman correlation coefficient and multiple regression analysis, using SPSS/WIN 23.0. Results: The elementary school teachers' health perception scored 2.94 out of 4, health status 1.59 out of 3, and health promotion behaviors 2.66 out of 4. The level of mental health status (1.67) was higher than that of physical health status (1.54) and the most practiced health promotion behavior was spiritual growth (3.15) and the least was health responsibility (2.00). Significant negative correlations were found between health perception and health status (r=-.59, p<.001) and between health status and health promotion behaviors (r=-.41, p<.001). A significant positive correlation was found between health perception and health promotion behaviors (r=.32, p<.001). The significant factors influencing health promotion behaviors were job stress and health status. These factors explained 19.6% of the health promotion behaviors. Conclusion: It is necessary to establish measures to increase the health perception and health promotion behaviors of elementary school teachers and improve their health status. In addition, since job stress and health status are factors influencing health promotion behaviors, it is necessary to actively manage job stress and health status in order to increase health promotion behaviors.

• 한국학교보건학회지
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• 제24권1호
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• pp.110-117
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• 2011

Purpose: The study aimed at identifying distributions of career stress and determining whether conflict at school or with family and health-risk behaviors could be associated with career stress. Methods: The subjects were 7,155 high school students in Seoul. Data were stratified random samples from Seoul student health examinations in 2010. Chi-square, trend test and multiple logistic regression were conducted. Results: Fifty six percent of subjects had career stress. Career stress, after adjusting for confound variables was associated with a significantly increased odds ratio (OR) for sociodemographic characteristics including females (OR=1.34), 12th graders (OR=1.56), 11th graders (OR=1.50), south area (OR=1.47), and northeast area (OR=1.40), for conflict at school or with family including violent threats made by family members or schoolmates (OR=2.00), thoughts of running away from home (OR=1.45), and needing of counseling for agony (OR=5.45), and for health-risk behaviors including sleep ${\leq}6$ hours/day (OR=1.23), nonuse of seat belts or protective euipment (OR=1.50), and frequently viewing pornography or chatting on adult Web sites (OR=1.23). Conclusion: Stress-coping skills and intervention strategies will be needed to enhance students' positive and to help them cope with psychosocial conflicts at school and with their families, and with health-risk behaviors, including sleep deprivation and nonuse of safety measures, including seat belts and protective.

• 한국학교ㆍ지역보건교육학회지
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• 제22권4호
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• pp.39-48
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• 2021

Objectives: The purpose is to prepare measures to effectively improve college life adaptation by identifying relevance between interpersonal relation disposition and college life adaptation, college life stress and college life adaptation for dental hygiene students. Methods: 375 dental hygiene students attending some local universities in Gyeonggi-do were sampled for convenience. The results of this study are as follows. Results: First, As a result of interpersonal relation disposition according to general characteristics, superiority-dominance tendencies were higher in first and third graders, in groups with grades above 4.0 and groups with lower subjective economic levels. And the stress of college life was high for second graders and students with lower grades than 2.0. Second, According to the correlation between factors, governance-dominance, independence-responsibility, sympathy-acceptance, sociable-friendliness, and ostentation-intoxication of interpersonal tendency factors had proportional relationship with college life adaptation, rebellion-distrust and college life stress had inverse relationship. Third, The results of multiple regression analyses to identify factors that affect college students' adaptation to college life were in the order of stress in college life, first grade, sociable-friendliness, second grade, rebellion-distrust. Conclusion: In order to improve college life adaptation, counseling and practical mediation programs should be developed and applied to effectively manage and control the negativity and positivity implied by interpersonal relationships and college life stress.

• 한국융합학회논문지
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• 제12권9호
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• pp.307-314
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• 2021

본 연구는 셀프리더십, 진로결정 자기효능감, 비판적 사고성향이 간호대학생의 진로준비행동에 미치는 영향을 파악하기 위해 시행된 서술적 조사연구이다. G시와 M시의 간호학과에 재학중인 간호대학생을 대상으로 2019년 4월부터 6월까지 자료를 수집하였고 208명의 자료를 분석하였다. 자료는 기술적 통계, 독립표본 평균 검정, 일원 배치 분산분석, 피어슨 상관계수, 다중회귀분석을 실시하였다. 분석 결과, 셀프리더십(β=.331, p<.001)과 진로결정 자기효능감(β=.302, p<.001)은 진로준비행동에 정적으로 영향을 나타냈으며, 연구모형은 진로준비행동을 38.7% 설명하였다. 이러한 연구 결과를 통해 간호대학생의 진로준비행동을 촉진하기 위해 셀프리더십과 진로결정 자기효능감을 향상키기기 위한 방안들이 간호교육 현장에서 개발 및 운영되어야 함을 알 수 있다.

• 한국재난정보학회 논문집
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• 제17권3호
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• pp.568-578
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• 2021

연구목적: 본 연구는 산업안전보건법과 건설기술진흥법의 규정을 파악하고, 건설현장의 안전관리 개선을 통하여 근로자의 안전보건 증진방안 모색하여 중대산업재해 방지 방안을 제안하고자 한다. 연구방법: 본 연구의 표본 대상 범위는 상시 근로자 50인(공사금액 50억원) 이상의 건설현장을 대상으로 설문조사를 실시하였다. 자료의 분석은 JAMOVI 통계 프로그램을 이용하였으며, 객관적인 자료를 바탕으로 하여 분석하는 연구를 진행하였다. 연구결과: 본연구의 가설을 검증하기 위하여 다중회귀분석을 시행하였으며, 분석결과. 근로자의 안전보건 활동 참여가 근로자 안전보건 증진에 가장 높은 영향을 미치는 것으로 나타났다. 결론: 건설현장의 근로자 안전보건 증진을 위하여 근로자의 안전보건 규칙 준수가 필요하고 근로자가 안전보건 활동에 참여하도록 개선되어야 한다고 할 수 있을 것이다.

• 대한치과교정학회지
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• 제51권5호
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• pp.304-312
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• 2021

Objective: This study aimed to compare the amount of tooth movement after multiple horizontal (MH) and single vertical (SV) micro-osteoperforations (MOPs), and evaluate the histological changes after orthodontic force application in rabbits. Methods: The mandibles of 24 white rabbits were subjected to two experimental interventions: MH and SV MOPs. Defect volume of the MOPs between the two groups was kept similar. A force of 100 cN was applied via a coil spring between the incisor teeth and the first premolars. The amount of tooth movement was measured. Differences in the amount of tooth movement and bone variables at three time points and between the two groups were evaluated using repeated-measures analysis of variance. Results: The first premolar showed a mesial movement of 1.47 mm in the MH group and 1.84 mm in the SV group, which was significantly different at Week 3 (p < 0.05). No significant difference was observed in bone volume and bone fraction between the groups. Tartrate-resistant acidic phosphatase-positive cell count was also significantly greater at Week 3 than at Week 1 in both the SV and MH groups. Conclusions: The amount of tooth movement showed significant differences between Weeks 1 and 3 in the SV and MH MOP groups, but showed no differences between the two groups. Therefore, SV MOP could be considered an effective tool for enhancing tooth movement, especially for molar distalization, uprighting, and protraction to an edentulous area.