• 한국자동차공학회논문집
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• 제3권6호
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• pp.212-223
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• 1995

To improve the efficiency of a power transmission system with slip elements, power split/circulation system is applied. The performance of a power split/circulation system varies widely by the change of the followings; the layout of system, the type and gear ratio of planetary gear, the performance of slip element, etc. Therefore, when one designs such a power transmission system or when one determines the economic/power mode of system, a certain performance prediction method is needed. In this study, the internal power flow pattern of a power split/circulation system is theoretically analyzed on several transmission systems. And an effective performance prediction method(so called performance locus diagram) is presented. By this method, the effects of design factors can be easily understood and the qualitative performances of system can be clearly evaluated.

• 한국컴퓨터정보학회논문지
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• 제21권9호
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• pp.165-176
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• 2016

This study developed the learning ability-based smart education program. The effectiveness of the developed materials was investigated using the quantitative-qualitative mixed method, and the process and results of the investigation are as follows. The quantitative investigation was conducted using the non-equivalent pretest-posttest design, in which the smart education method was applied to the experimental group, while the conventional education method was applied to the control group to analyze students' creative problem-solving potential, task concentration, and the variables required for the learning activity. The results showed significantly higher performance in the experimental group over the control group. Regarding data collection in the qualitative investigation, an analysis of the class from the instructor and class consultation logs from the class analyst were collected; the comments on the experience of each class period were collected from students. The results of the analysis of the data suggest that the perception of smart education improved for the instructor, class analyst, and learners as the course progressed.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1223-1230
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• 2009

In the construction industry, Case-Based Reasoning (CBR) is considered to be the most suitable approach and determining the attribute weights is an important CBR problem. In this paper, a method is proposed for determining attribute weights that are calculated with attribute relation. The basic items of consideration were qualitative and quantitative influence factors. These quantitative factors were related to the qualitative factors to develop a Cost Drivers-structural equation model which can be used to estimate construction cost by considering attribute weight. The process of determining the attribute weight-structural equation model consists o 4 phases: selecting the predominant Cost Drivers for the SEM, applying the Cost Driers in the SEM, determining and verifying the attribute weights and deriving the Cost Estimation Equation. This study develops a cost estimating technique that complements the CBR method with a Cost Drivers-structural equation model which can be actively used during the schematic estimating phases of construction.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제20권2호
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• pp.177-192
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• 2017

본 연구는 수학교육연구에서 적용되고 있는 혼합연구법이 질적연구와 양적연구를 어떻게 결합하여 활용하고 있는가를 탐색해 보고자 한다. 구체적으로 수학교육분야에서 질적연구와 양적연구의 혼합이 방법론적으로 어떠한 시사점과 과제를 줄 수 있는가를 탐구하고자 한다. 이와 같은 연구 목적을 달성하기 위하여, 본 연구에서는 한국초등수학교육학회에서 발간하는 '초등수학교육학회지'에 2015년 게재된 전체 32편의 논문 중, 혼합연구법을 적용한 4편의 논문을 분석 대상으로 선정하였다. 기존의 선행연구들에서는 혼합연구에 대한 분석 결과를, 일반적인 양적연구의 결과와 유사하게 비교 항목별로 수치화시키며 양적인 정보를 중심으로 간략하게 설명하는 경향이 있어 왔다. 이와는 대조적으로, 본 연구에서는 질적 연구자의 관점에서 질적연구와 양적연구의 장점을 최적화할 수 있는 방안을 상세하게 논의하는 형식으로 분석 결과와 시사점을 제시하고 있다.

• 대한영양사협회학술지
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• 제8권1호
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• pp.19-25
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• 2002

The purposes of this study were to : (1) identify the faculty and staffs' patronage behaviors, (2) evaluate customer perception and complaint on service quality attributes, (3) diagnose customer needs to construct scheme for building a new faculty foodservice. The qualitative method of this research was proceeded by interviewing 20 individuals. Most respondents considered that 'taste', 'atmosphere', 'clean and sanitation', and 'menu variety' were important rather than 'price' in general faculty foodservice. Therefore, 'taste', 'menu variety', 'atmosphere' were the most important service attributes for remodeling present faculty foodservice.

• 한국가스학회지
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• 제10권4호
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• pp.63-69
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• 2006

대기오염의 저감을 위한 천연가스자동차의 보급으로 LNG 및 CNG 충전소의 보급도 늘어나고 있는 추세이다. 하지만 1998년 부천 LPG 충전소의 화재 폭발사고와 같은 대형가스사고 때문에 충전소의 설치는 많은 어려움을 겪고 있다. 따라서 본 연구에서는 LCNG/LNG 복합충전소를 연구대상으로 선정하고 현장방문을 통하여 정성적 위험성평가를 수행하였고, 위험성감소방안(권고사항)을 제시하였다. K-PSR을 이용한 정성적 위험성평가 수행결과 누출에 의한 잠재위험성이 가능 크게 나타났으며, 특히 탱크로리에서 LNG 저장탱크로의 하역작업 중 LNG의 누출에 의한 위험성이 가장 크게 나타났다.

• 한국직업건강간호학회지
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• 제26권2호
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• pp.93-104
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• 2017

Purpose: This is a mixed method study to understand the experience regarding the job satisfaction of Physician Assistant (PA) male nurses. Methods: First, factors influencing job satisfaction were analyzed using quantitative approach and job adaptation processes by qualitative research was done through interviews. Finally both of the collected data were comprehensively compared. Results: The factors which had the greatest influence on job satisfaction in the regression analysis were job stress (${\beta}=-.49$, p<.001) and job identity (${\beta}=.46$, p<.001) and the explanatory power explaining these variables was 58% (Adj. $R^2=.58$). The results of qualitative research were categorized using the same four variables with qualitative research variables. Five themes in job satisfaction, three themes in job identity, five themes in job stress and six themes in job value were identified by content analysis. Conclusion: This finding identified that the job stress and job identity were important variables related to job satisfaction. Therefore, the factors influencing job identity have to be strengthened, and a systematic management and interest to develop them are necessary.

• 중환자간호학회지
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• 제11권2호
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• pp.21-33
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• 2018

Purpose : To explore the person-centered care (PCC) experienced by critical patients. Method : This qualitative study deductively examined the attributes of the PCC model proposed by Jakimowicz and Perry. The participants were 16 patients who were recently discharged from intensive care units at a university hospital. Data were collected through in-depth interviews and were analyzed using the deductive method of content analysis. Results : A total of 4 categories, 16 subcategories, and 33 codes were generated from 171 meaningful statements. The final 4 categories were "compassionate presence," "professional interaction," "outstanding competency," and "patient identity." These were consistent with the main attributes of Jakimowicz and Perry's model. However, most of the codes belonged to the "compassionate presence" and "patient identity" categories. Among the attributes of the model, "continuity of nursing," "therapeutic relationship," "expert knowledge," "clinical knowledge," "evidence-based intervention," and "patient's rights" were not derived as codes. Conclusion : These findings deepen the understanding of the PCC model from the patient's point of view. The main attributes of PCC identified in the current study can be applied to the development of practical guidelines for intensive care nursing. In addition, we recommend the development of a PCC measurement tool for critical care patients.

• 컴퓨터교육학회논문지
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• 제17권1호
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• pp.97-105
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• 2014

공교육 현장에서 일어나고 있는 각종 정량적 평가의 문제점을 고려하고, 학생들의 교과목 점수 외의 개별 특성을 반영하여 평가에 적용 할 수 있는 정성적 평가 기법을 제안하기 위해 지능형 퍼지논리 추론의 적응성과 가능성을 이용하는 방법론적 고찰을 연구하였다. 각 급 학교의 평가에서 정량적 점수에 추가하여 평어평가를 활용하여 개인의 정성적 특징을 반영하는 기법을 제안하고, 한편으로, 교육정책 관련 사안으로서의 실제적인 실혐 환경구축 및 구현의 어려움으로 인해 가상적인 환경에서의 실험결과를 제시하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제47권3호
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• pp.273-290
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• 2008

This article provides how to implement the use of Realistic Mathematics Education (RME) in a teaching a function at a school to improve the equity based on the gender in students' mathematization for their mathematical thinking using technology. This study was planed to get research results using the mixed methodology with qualitative and quantitative methodologies. 120 middle school students participated in the study to bring us data about their mathematical achievement. Through the data analysis used by ANCOVA for the qualitative method, the students with the experiment of the mathematization based on technology excelled the other groups of students who were not provided with technology or both of them. Through the data analysis used by the constant comparative method for the qualitative data, the technology environment had helped the female students manipulate learning trends easily, strong construction on horizontal mathematization, depending on discussion with peers, and more reflexive thinking using a calculator. This means that teachers can put careful assignment on each category of mathematization regarding the gender. The study results in a lot of resources for teachers to use into their teaching mathematics for improving students' equity in interactive technology environment.