• Title/Summary/Keyword: Qualitative case Study

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Multiplicative reasoning in fractional contexts: Employing domain analysis and taxonomic analysis (분수맥락에서의 곱셈 추론: Domain Analysis and Taxonomic Analysis를 적용하여)

  • Lee, Hyung-Sook
    • School Mathematics
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    • v.9 no.3
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    • pp.427-445
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    • 2007
  • This study presents the results of a case study that investigated a seventh grader's fractional reasoning related to multiplicative reasoning. In addition, by employing domain analysis and taxonomic analysis for analyzing qualitative data, I show how a qualitative methodology was used for the data collected by teaching experiment methodology. The study identifies three distinct issues that emerged as the student engaged in solving fraction problems: a view of fractions as operations vs. results, the issue of units, and mixed numbers vs. improper fractions. These three issues have instructional implications in that each of them is critical in developing multiplicative reasoning and investigating how they relate to each other suggests a way to improve multiplicative reasoning in fractional contexts.

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A Qualitative Study on Steering of Education Accreditation: With Case Study on Korean Medicine Education (학문분야별 평가인증제 운영에 관한 질적 사례 연구: 한의학을 중심으로)

  • Seo, Dongin;Shin, Sangwoo
    • The Journal of Korean Medicine
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    • v.40 no.3
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    • pp.21-34
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    • 2019
  • Objectives: The purpose of this article is to develop steering of program accreditation system in Korean Medicine Education through meta-evaluation. For this study, the subjects of our research were categorized as the accreditation criteria and system, results and effects, tasks for improvement on Korean Medicine Education. Methods: We conducted Focus Group Interview on 102 full-time professors with experience of participating on accreditation of Korean Medicine Education from 12 college of Korean Medicine Education and we analyzed it by thematic analysis. Results: The accreditation criteria and program evaluation system of Korean Medicine were listed as 'Confusion about the goals of program evaluation', 'High hurdles on accreditation', 'obsession to success cases', 'Small college complaints about applying the same criteria', 'Dilemma of quantitative and qualitative evaluation'. The results and effects of program evaluation in Korean Medicine Education were listed as 'Establishment of base infrastructure for basic medical education', 'Benchmarking and exchanging opinions through evaluation certification', 'Resistance to documents and document-based evaluation', and 'Double-sided of evaluation certification'. As for the tasks for further improvement, the following list is suggested. 'Actively promote evaluation certification', 'Simplification and standardization of forms', 'Requesting for activating about Evaluation committee', 'Need for consulting before regular evaluation'. Conclusion: It is necessary to upgrade the accreditation system and make efforts to improve the issues discovered for better Korean Medicine Education.

An Exploratory Study of the Establishment of a Local Community System for Family-centered Case Management -Focused on the Application of a Healthy Families Center and a Multi-cultural Family Support Center- (가족중심 사례관리의 지역사회 체계구축을 위한 탐색적 연구 -건강가정지원센터와 다문화가족지원센터 적용을 중심으로-)

  • Kang, Ki Jung;Park, Su Sun
    • Journal of Family Resource Management and Policy Review
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    • v.17 no.3
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    • pp.125-144
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    • 2013
  • This aim in this study is to investigate the meaning of case management and management in general from the case manger's perspective, as well as case mangers' abilities and networks. We also propose a development direction for the establishment of a local integrated family-centered community management system. Regarding the collection of qualitative data, focus group interviews (FGIs) were conducted with 11 case managers from social welfare organizations in the city of C. The interviews consisted of open-ended questions in the following four categories: understanding of case management, case managers' abilities, case management environments, and local community networks. According to the interview analysis, a total of 16 subcategories in 9 categories and 4 domains have been identified. Due to the ambiguity regarding the concept of case management, case management was completely dependent upon individual case managers' abilities. In particular, family-centered case management was found to exist in several organizations in the same region. In terms of case management environments, the following problems have been observed: absence of related departments and staff, confusion regarding performance evaluation standards, limitations in sharing information among organizations, limitations in resource exploration and management, redundant support, and an uncomfortable relationship between the private and public sector. Horizontal exchange and cooperation among organizations are essential to establish and facilitate a local community network. After all, to establish a local family-centered community case management system, the roles of a Healthy Families Center and a Multi-cultural Family Support Center as parts of a family-centered transfer system should be fully emphasized in local society, and the performance of family-centered case management should be developed.

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Studies on Introducing Performance of RFID System (RFID 시스템 도입성과에 관한 통합적 연구)

  • Park, Kwang-Oh;Kim, Jin-Wan
    • The Journal of the Korea Contents Association
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    • v.11 no.7
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    • pp.354-365
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    • 2011
  • Modern corporations are faced with widespread, dynamic and accelerating changes. To better cope with the external and internal changes, corporations often utilize information technologies such as RFID(Radio Frequency IDentification). To date, RFID research has mainly focused on adoption strategies and intention on RFID, construction case. The purpose of this study is to examine qualitative and quantitative performance on RFID. To validate the research model proposed in the study, filed survey was conducted with 67 in company using RFID. Then, we compare their quantitative financial results after the introduction of RFID in order to measure the performance of the RFID. The results of the study can be summarized as follows. First, the relation among qualitative factors showed significant correlations. Second, the difference of financial metrics was existed after the adopting RFID. Third, significant difference was observed among financial ratio. Fourth, the correlation between qualitative and quantitative performance showed no significant relations.

Verifying a Method of Qualitatizing Qualitative Factors of BSC (BSC의 정성적요인 계량화 검증 방법)

  • Oh, Sang-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.2
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    • pp.414-420
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    • 2007
  • For a more convenient deduction of the weighted values in AHP of BSC using a spread sheet program, this study derived each weighted values through single and group calculations and it also compared the two calculations to verify mutual identities. Pairwise comparison is generally used in measuring performance of corporations or government organizations, but, many researches have been done without reliability verification due to difficulty in the deduction of weighted value. This trend, like using a wrong measurement, result in defective result of BSC. Therefore, this study presents various methods of single and group case measurement using spread sheet so that it can be utilized in practice. Thus, I expect this study's result be availed in BSC consulting or research of public organizations that have difficulty in measuring qualitative factors.

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The Quantitative Analysis in terms of the Requisite for Logistics Support of the War History using Simulation Moscow Expedition of Napoleon (시뮬레이션을 이용한 전쟁사 군수지원 요소의 정량적 분석 : 나폴레옹의 모스크바 원정 사례 연구)

  • Jung, Won-Il;Byun, Mu-Hyun;Cho, Sung-Jin;Kang, Sung-Jin
    • Journal of the military operations research society of Korea
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    • v.37 no.1
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    • pp.27-38
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    • 2011
  • Purpose that studies the war history is to prevent the war in the advance through instruction that is gotten by understanding the past war and in case of emergency, it is to win victory in the war from the enemy by doing not commit a same mistake like the past war. For these reasons, many studies about the war history have proceeded continuously in domestic and outside the country, and those are being carried out in present. However, most of studies of the war history have been analyzed only on qualitative analysis. In this study, we want to suggest quantitative analysis method using simulation with qualitative analysis. As an example of study, we quantitatively analyzed the importance of logistics support on the Moscow expedition of Napoleon. Also, on the basis of this, we found failure factor of logistics support of Napoleon force and through this, deduced instruction. There is meaning that this paper suggested quantitative analytical method in terms of study of the war history with qualitative analytical method.

An Intelligent Decision Support System for Demand Forecasting. (수요예측을 위한 지능형 의사결정지원시스템 구축)

  • 염창선
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.23 no.59
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    • pp.43-51
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    • 2000
  • Many organizations are currently adjusting the statistical forecasts with qualitative factors. However, so for a few forecasting system with adjustment process have been developed. They have difficulties in managing knowledge and estimating the quantity of adjustment. In this study, the forecasting support system adopting the frame based knowledge representation and containing the decision making scheme for adjustment is proposed to overcome these difficulties. According to the experiments, the proposed system improves the forecasting performance on gasoline case.

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COBDA-An Expert System for Concrete Bridge Deterioration Assessment (COBDA-콘크리트 교량의 노후화를 평가하는 전문가 시스템)

  • ;Cabrera
    • Proceedings of the Korea Concrete Institute Conference
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    • 1996.10a
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    • pp.532-539
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    • 1996
  • Existing assessment methodologies present a considerable problem because of fuzzy situation of deterioration mechanism of concrete bridges; namely, qualitative, subjective or inconsistent. This paper discusses current assessment methods in aspect of uncertainty. The expert system, COBDA, is developed for consistent and fast assessment of deteriorantion of concrete bridges. Briefly introduced in this paper are the structure of expert system and several methodologies for decision making of deterioration situation and providing repair option. COBDA is configured by PROLOG for logic approach and expert system shell based on Bayesian subjective probability. The methodologies are illustrated and discussed by comparison of condition assessment results in a case study.

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Teachers' Perspectives on Environmental Education and Expectations for Learners' Changes : An Ethnographic Case Study in Two Korean Middle Schools (교사의 환경교육 해석과 학습자 변화에 대한 기대 -두 중학교에서의 문화기술적 사례 연구-)

  • 김찬국;이동수
    • Hwankyungkyoyuk
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    • v.15 no.1
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    • pp.101-114
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    • 2002
  • This study is an ethnographic case study aiming at understanding the environmental education (EE) classes of 'Discretionary Activity' which has recently been introduced into Korean middle school curricula. To show the characteristics of the classes, researcher described the phenomena unique to two schools. Two middle school teachers were included in this study as research participants. Qualitative approaches were used to understand the status quo of school environmental education, teachers's perspectives on EE and their expectations for learners' changes. Data were gathered using the methods of participant observation during two school terms and in-depth interview with two teachers and nine students. Ethnographic analysis/interpretation methods such as domain analysis were used to analyze the data. To verify the research methodology and conclusions, triangulation, members checking and peers debriefing were used. Research questions emerging through the circulative research process include 1) what are the teachers' perspectives on EE and how do the teachers' perspectives affect their EE teaching? 2) what are the teachers' expectations for learners' changes and how are teachers/researcher able to perceive learners' changes? Two research participants have different life experiences and perspectives on environment and EE. The perspectives had influence on the selection of the contents and the styles of their teaching. Teachers' expectations for learners' changes were also different according to the styles of the teaching.

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Varietal and qualitative characteristics variation of rutin and quercetin in tartary buckwheat (Fagopyrum tataricum)

  • Yu, Je Hyeok;Kwon, Soo Jeong;Cho, Seong-Woo;So, Yoon-Sup;Jung, Hyun-Jin;Chung, Jong-Wook;Ma, Kyung-Ho;Son, Eun-Ho;Lee, Sok-Young;Woo, Sun-Hee
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.76-76
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    • 2017
  • Buckwheat has gained scientists concern due to its nutritional and medicinal values in recent years, and many important bioactive compounds. The present study was performed to investigate the influence of the varietal performance and environmental conditions on the content of rutin and quercetin in Tartary buckwheat germplasm. A total of 44 foreign Tartary buckwheat germplasms were examined and compared their contents based on the collected countries, seed shape, and seed color. The highest number of germplasm (16) was found in ranged from 600 mg/100 g to 800 mg/100 g of rutin content. In case of quercetin content, the highest number of germplasm (19) was observed in ranged from 5 mg/100 g to 10 mg/100 g. However, the rutin content showed the highest value (1326.6 mg/100 g) from CBU408 and quercetin content showed the highest value (22.5 mg/100 g) from CBU456. The number of germplasm showed the highest value (23) in ranged from 3000 mg/100 g to 4000 mg/100 g of rutin content. The number of germplasm is the highest value (30) in ranged from 100 mg/100 g to 200 mg/100 g of quercetin content. When rutin and quercetin content in seed was compared according to collected countries, seed shape, and seed color respectively, no association was appeared with rutin and quercetin content. In sprout of whole Tartary buckwheat germplasm, mean of rutin content and quercetin content was 3362.9 mg/100 g and 14.2 mg/100 g respectively. In conclusion, the results observed from the present study suggest that highly rutin germplasm could be used more efficiently via breeding to develop a highly rutin content variety for using in sprout. No correlation was appeared in the case of quercetin. However, the quercetin content in sprout was 4~90 times more than seed. So, sprout could be used more efficiently than seed in the case of quercetin. Our results suggest that the varietal variation and qualitative characteristic differences of rutin and bioactive compounds may provide important nutrient sources and industrial application of Tartary buckwheat.

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