• 동아시아경상학회지
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• 제10권3호
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• pp.1-15
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• 2022

Purpose - This study explored factors of online education that affect student dissatisfaction and learning effectiveness in higher education during the COVID-19 pandemic. Research design, data, and methodology - This study combined qualitative and quantitative designs. The qualitative part of this study involved in-depth interviews using a criteria-based purposive sampling technique. The quantitative part of this study consisted of an online survey. Results - The qualitative results revealed that students faced significant problems related to online learning, including a lack of learning environment, interaction, and support from the school. The quantitative results indicated that the effects of transitioned-online courses on student dissatisfaction were higher with student support, the interaction between students and instructors, online learning environment, and course organization and evaluation based on the order, while the effects on learning effectiveness were higher with the online learning environment, interaction between students and instructors, course organization and evaluation, and student support based on the order. Conclusion - The results implied that online learning in the era of the COVID 19 pandemic negatively affects student satisfaction and learning effectiveness. Policymakers and school leaders should improve students' satisfaction and learning effectiveness when confronted with the pandemic. Better policies should be adopted to improve better way of teaching in the era of COVID19.

• 한국군사과학기술학회지
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• 제15권5호
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• pp.643-650
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• 2012

This paper presents quantitative method of static combat effectiveness to classify fighter aircraft generations. We have analyzed performance metrics of United States(US), United Kingdom(UK), Russia, France, Sweden' fighters to determine jet-fighter generation. Both nominal and continuous variables were defined and used to present current trend of combat effectiveness.

• The Korean journal of internal medicine
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• 제39권3호
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• pp.383-398
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• 2024

The identification of antimicrobial use patterns is essential for determining key targets for antimicrobial stewardship interventions and evaluating the effectiveness thereof. Accurately identifying antimicrobial use patterns requires quantitative evaluation, which focuses on measuring the quantity and frequency of antimicrobial use, and qualitative evaluation, which assesses the appropriateness, effectiveness, and potential side effects of antimicrobial prescriptions. This paper summarizes the quantitative and qualitative methods used to evaluate antimicrobials, drawing insights from overseas and domestic cases.

• 대한인간공학회지
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• 제27권4호
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• pp.45-58
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• 2008

Ergonomic techniques have been required to analyze the effectiveness of functional clothing design improvement in a systematic and analytic manner. The goals of the present study are to: (1) comprehensively and analytically examine the effectiveness of clothing improvement by using the relationship analysis between clothing design components (D) and ergonomic evaluation measures (E) and (2) prove the usefulness of cost-effectiveness analysis for clothing design optimization. The cost effectiveness analysis is comprised of the preliminary evaluation based on expertise and the in-depth evaluation where the D-E relationship analysis is applied. As a result of the cost effectiveness analysis applied to flame-proof clothing, an optimal design was identified by analyzing costs and qualitative/quantitative effects. In the preliminary evaluation, the expected effectiveness of each design alternative on wear efficiency and wear comfort was estimated. In the in-depth evaluation, however, the effectiveness of each design alternative was analyzed by quantitative evaluation in a wearing test using a questionnaire prepared based on the D-E relationship analysis. It was concluded that the D-E relationship analysis and the cost-effectiveness analysis are useful for comprehensive evaluation and optimization of functional clothing design.

• 대한가정학회지
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• 제40권4호
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• pp.13-25
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• 2002

The objective of this study was to develop and verify the effectiveness of the career education program for unwed mothers to facilitate to consider their career plan and career orientation. The program of this study was based on the Super's developmental theory. The program was done twice a week totally 8 times. The subject of the program is unwed mothers from 16 to 25 years old. One-group pretest-posttest design was held. The quantitative and qualitative researches were carried out. In quantitative research, the Wilcoxon Signed Ranks Test was done with SPSS Window 10.0 to evaluate the effectiveness of the career education program. In qualitative research, the content of discussion in the course of group process, investigation, and the materials which were made from the group members were analysed to the objects of program. The results of this study was proven to develop career maturity, career decision level, and career identity. Finally, the meanings of this consequences were discussed.

• 전기전자학회논문지
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• 제17권1호
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• pp.1-9
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• 2013

3차원 영상 해석 기법에 의해 구해진 DEM(Digital Elevation Map)을 정량적으로 평가하는 것은 영상 해석 기법의 유효성을 검증하기 위해 매우 중요하다. 본 논문에서는 모의 영상 제작에 의한 3차원 재구성 과정의 새로운 정량적 평가 방법을 제안하였다. 제안된 방법은 미리 확보된 DEM과 정사영상(ortho-image)을 가상의 실제 값(pseudo ground truth)으로 가정한 것에 의한 것이다. 제안된 방법의 과정은 그래픽스에서 사용되는 ray tracing 알고리즘을 구성하여 가상의 실제 값에 적용함으로서 원하는 시점으로부터의 한 쌍의 모의 영상을 제작하는 것으로부터 시작된다. 제작된 모의 영상 쌍으로부터 구해진 DEM을 가상의 실제 값과 비교하면 구해진 DEM의 정량적인 오차 분석이 가능하여, 적용된 3차원 영상 해석 기법의 유효성이 평가될 수 있다. 제안된 평가 방법의 타당성을 검증하기 위해, 정량적 및 정성적인 실험이 수행되었다. 이를 위해 발생되는 모의 영상이 실제 형상을 재현하는 정도를 정량적인 수치로서 구하여 제안된 방법을 타당성을 입증하였다. 또한 정합창의 크기 변화에 따른 DEM의 정확도를 제안된 평가 방법에 의해 실험하였다. 이러한 실험 결과가 예견된 결과와 일치함에 의해 제안된 평가 방법의 타당성을 정성적으로도 명백히 증명하였다.

• The Journal of Korean Physical Therapy
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• 제25권5호
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• pp.260-265
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• 2013

Purpose: This study was conducted in order to evaluate the quantitative effectiveness of region of interest (ROI) setting in MR-DTI analysis with and without fMRI activation results. Methods: Ten right-handed normal volunteers participated in this study. DTI and fMRI datasets for each subject were obtained using a 1.5T MRI system. For neural fiber tracking, ROIs were drawn using two methods: The drawing points were located in the fMRI activation areas or areas randomly selected by users. In this study, the neural fiber tract targeted the corticospinal tract (CST) Quantitative analyses were performed and compared. The pixel numbers passing through the fiber tract in the individual brain volume were counted. The ratios between the ROI pixel numbers and the extracted fiber pixel numbers, and the ratios between the fiber pixel numbers and the whole-brain pixel numbers were also calculated. Results: According to our results, extracted CST fiber tract in which the ROI was drawn with fMRI activation areas showed higher distribution than drawing the ROI by users' hands. In addition, the quantitatively measured values represented higher pixel distribution: The counted average pixel numbers were 4553.8 and 1943.3. The average ratios of the ROI areas were 33.87 and 22.52. The average percentages of the individual whole-brain volume numbers were 2.06 and 0.87. Conclusion: Results of this study appear to indicate that use of this method can allow for more objectives and significant for study of the recovery of neural fiber mechanisms and brain rehabilitation.

• International Journal of Internet, Broadcasting and Communication
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• 제13권1호
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• pp.1-10
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• 2021

The type approval system for railway vehicle has been in effect since 2016 in order to establish a regular safety management system to secure railway safety and enhance the technological competitiveness of the railway industry, abolished the conventional performance test system through the reform of the Railroad Safety Act in 2012. Until now, there has been appreciated it has been making significant contributions to railway safety and industry of operation and manufacturing companies, taking their place in accordance with the implementation of the system. But there has been no case of quantitative analysis on the effectiveness of the actual system. In this study, in order to examine the full-scale performance of the approval system and quantitatively analyze effectiveness, we identified and defined the relationships with the major elements of the type approval system based on system thinking principle and determined the calculated outcomes to relevant stakeholders. A method of establishing a type approval performance management system that can be grasped, utilized, and adjusted from a point of various stakeholders' views was proposed. This is expected to be more helpful in the implementation of the system, such as improving and applying quantitative effects to analysis by closely reviewing the effects and influencing factors of the type approval system based on the data accumulated through continuous performance management and reflecting to system improvement.

• 한국국방경영분석학회지
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• 제27권2호
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• pp.56-75
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• 2001

Most O4I Systems are considered as one of the major system in future Information Warfare. However, it is difficult to measure the effectiveness of force improvement when C4I System is used with other weapon systems, quantitatively. In this Paper, we propose a quantitative method to evaluate the force improvement effectiveness of KNTDS(Korea Naval Tactical Data System). This method utilized the Lanchester's equations and its applications. We also showed a numerical example based on a given scenario in a sea battle and the ASP(Analytic Hierarchy Process) Method is applied to verify its results.

• 한국시뮬레이션학회논문지
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• 제25권4호
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• pp.137-144
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• 2016

본 논문은 SBA 효과도에 대한 이해를 기반으로 국방 무기체계 개발이 어떤 형태로 진행되어야 하는지에 대한 제안을 담고 있다. 이러한 연구가 필요한 이유는 기존의 국방무기체계도입 환경이 SBA의 필요성에 대해서는 인지하고 있으나 이의 적용 시 나타나는 효과에 대해 적절히 제시하지 못하고 있는 데에 있다. 이러한 효과를 제시하기 위해서는 무엇보다 모델링 및 시뮬레이션 수행 시의 비용에 대한 산정이 어떻게 될지에 대한 연구가 선행되어야 하고 이를 기반으로 무기체계 개발 시 발생되는 비용과 관련한 로그를 기록으로 남기는 과정이 요구된다. 본 논문에서는 이러한 요구사항과 필요성을 기반으로 국방 무기체계도입을 관리하는 시스템의 구조와 구성을 제안하고 이를 기반으로 제안된 시뮬레이션 시스템을 결과물로 제시한다. 본 연구의 기여점은 그동안 고려되지 못한 SBA의 효과도를 수치적으로 나타내기 위한 방법을 제시하는 데에 있으며 이를 기반으로 국방환경에서 활용 가능한 시스템의 개발을 제안한 데에 있다.