• 제목/요약/키워드: Qualitative evaluation

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뇌 자기공명영상에서 Heavily T2 FLAIR와 DWI 기법의 영상비교 (Image Comparison of Heavily T2 FLAIR and DWI Method in Brain Magnetic Resonance Image)

  • 구은회
    • 방사선산업학회지
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    • 제17권4호
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    • pp.397-403
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    • 2023
  • The purpose of this study is to obtain brain MRI images through Heavenly T2 FLAIR and DWI techniques to find out strengths and weaknesses of each image. Data were analyzed on 13 normal people and 17 brain tumor patients. Philips Ingenia 3.0TCX was used as the equipment used for the inspection, and 32 Channel Head Coil was used to acquire data. Using Image J and Infinity PACS Data, 3mm2 of gray matter, white matter, cerebellum, basal ganglia, and tumor areas were set and measured. Quantitative analysis measured SNR and CNR as an analysis method, and qualitative analysis evaluated overall image quality, lesion conspicuity, image distortion, susceptibility artifact and ghost artifact on a 5-point scale. The statistical significance of data analysis was that Wilcox-on Signed Rank Test and Paired t-test were executed, and the statistical program used was SPSS ver.22.0 and the p value was less than 0.05. In quantitative analysis, the SNR of gray matter, white matter, cerebellum, basal ganglia, and tumor of Heavily T2 FLAIR is 41.45±0.13, 40.52±0.45, 41.44±0.51, 40.96±0.09, 35.28±0.46 and the CNR is 15.24±0.13, 16.75±0.23, 16.28±0.41, 15.83±0.17, 16.63±0.51. In DWI, SNR is 32.58±0.22, 36.75±0.17, 30.21±0.19, 35.83±0.11, 43.29±0.08, and CNR is 13.14±0.63, 14.21±0.31, 12.95±0.32, 11.73±0.09, 17.56±0.52. In normal tissues, Heavenly T2 FLAIR obtained high results, but in disease evaluation, high results were obtained at DWI, b=1000 (p<0.05). In addition, in the qualitative analysis, overall image quality, lesion conspicuity, image distortion, susceptibility artifact and ghost artifact aspects of the Heavily T2 FLAIR were evaluated, and 3.75±0.28, 2.29±0.24, 3.86±0.23, 4.08±0.21, 3.79±0.22 values were found, respectively, and 2.53±0.39, 4.13±0.29, 1.90±0.20, 1.81±0.21, 1.52±0.45 in DWI. As a result of qualitative analysis, overall image quality, image distortion, susceptibility artifact and ghost artifact were rated higher than DWI. However, DWI was evaluated higher in lesion conspicuity (p<0.05). In normal tissues, the level of Heavenly T2 FLAIR was higher, but the DWI technique was higher in the evaluation of the disease (tumor). The two results were necessary techniques depending on the normal site and the location of the disease. In conclusion, statistically significant results were obtained from the two techniques. In quantitative and qualitative analysis, the two techniques had advantages and disadvantages, and in normal and disease evaluation, the two techniques produced useful results. These results are believed to be educational data for clinical basic evaluation and MRI in the future.

공과대학 혁신을 위한 재정지원사업 및 교수 평가제도 개선에 관한 연구 (The analysis for improving evaluation system of government-supported program and faculty in developing engineering college)

  • 박문수
    • 공학교육연구
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    • 제18권2호
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    • pp.27-32
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    • 2015
  • The paper deals with the analysis for improving evaluation system of government-supported program in developing engineering college. I think that it is important to consider evaluation system of government-supported program and faculty in the aspect of policy responsibility and autonomy. I suggest three proposals. First, in the perspective of evaluation system of government-supported program, it is important to keep the balance between SCI-based evaluation and practical & University Industry Corporation (UIC) indicator or keep the balance between quantitative indicators and qualitative indicators. Second, in the perspective of evaluation system of faculty, UIC-friendly evaluation system should be expanded and institutionalized. Finally, the evaluation systems should be not only built, but also utilized for developing engineering college.

How do Lung Cancer Patients Experience Stigma?: A Meta-synthesis of Qualitative Studies

  • Jeong, Ji Yeon;Jeong, Gyeonghui;So, Hyang Sook
    • 성인간호학회지
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    • 제28권1호
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    • pp.116-126
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    • 2016
  • Purpose: Lung cancer patients are often stigmatized since lung cancer is closely associated with smoking, which is a self-administered life style. The stigma of lung cancer has been examined in some qualitative studies; however, their findings were diverse and not yet synthesized. Therefore, this meta-synthesis study aimed to explore how lung cancer patients experience stigma. Methods: A meta-synthesis method, as suggested by Sandelowski and Barroso in 2007, was applied by aggregating the findings after an evaluation according to consolidated criteria for reporting qualitative research (COREQ). Results: By synthesizing the findings of the selected seven papers, a synthesized theme was emerged as "experiencing external and internal distances, which mandates authentic and consistent supports." The four sub-themes included 'experiencing some distance from the surrounded world,' 'experiencing self-made distance between the disease and oneself,' 'the disease experience causes social isolation and loneliness,' and 'there is lack of supportive care for myself.' Conclusion: Health care providers should be more attentive to supporting lung cancer patients by providing more effective advocacy programs that improve patients' quality of life.

의료기관 평가에 관한 병원 종사자들의 경험: 포커스 그룹 연구 (Hospital Workers' Experience with Hospital Evaluation Program: A Focus Group Study)

  • 이명선;오지현;황혜민;권은진;이정희;박은영
    • 대한간호학회지
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    • 제41권4호
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    • pp.568-579
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    • 2011
  • Purpose: The purpose of the study was to understand and describe the hospital workers' experience related to the hospital evaluation program implemented in Korea between 2004 and 2009. Methods: During 2010, data were collected using focus group interviews. Four focus group interviews were held with a total of 28 hospital workers participating. All interviews were recorded and transcribed as they were spoken, and data were analyzed using qualitative content analysis. Results: Nine themes emerged from the analysis: 1) Positive change in the necessity of the evaluation; 2) Improvement in the hospital system, facilities, and human resources; 3) Unity through cooperation among departments; 4) Nursing work overload; 5) Lack of physicians' awareness and responsibilities; 6) Unfair and unrealistic evaluation items; 7) Lack of credibility of the outcome; 8) Shifting responsibility for negative outcomes to the workers; 9) Lack of pragmatic utility. Conclusion: The results of the study demonstrate that the hospital evaluation program played a key role in improving some work environments and communication among departments. At the same time, they show various negative themes resulting from the context of very authoritarian hospital systems and a connection-oriented society in Korea.

천연 인조 토끼털의 주관적 평가 및 물리적 성질에 관한 연구 (A Study on the Subjective Evaluation and Physical Properties of Natural/Artificial Rabbit Hairs)

  • 이선아;김종준
    • 패션비즈니스
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    • 제21권4호
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    • pp.144-158
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    • 2017
  • Fur garment has long been the conventional symbol for luxury, or conspicuous consumption. However, as fashion items began to diversify as part of overall fashion trend, fur items are now more about individual taste and style than just lavishness. Synthetic fur is especially emerging as a new promising fashion material, with a touch almost like natural fur at an affordable price. Along with the emergence of 'Vegan Fashion' trend, synthetic fur is establishing itself as a popular fashion textile. This study is an attempt to investigate subjective evaluation and physical properties of natural and synthetic furs, whose results will further serve as basic data in developing synthetic fur materials. Sensory and emotional evaluations are carried out on natural and artificial furs. For analysis, factors such as weight, thickness, air permeability, gloss and compressibility were surveyed to observe how they influence the physical properties. According to the subjective evaluation, natural and artificial fur samples do not differ in conspicuous ways in appearance. Experiments on physical properties, specifically warm/cool touch experiment, show that natural fur has a slightly higher warm sensation than artificial fur. Luster analysis by using a microscope revealed that there are subtle qualitative differences between natural and artificial fur. During the subjective evaluation, subjects found it hard to state distinct quantitative differences in luster. A survey as a means of assessing qualitative differences in gloss seems to be necessary to complement the evaluation. Results from this study will potentially serve as resources for diversification of fashion product designs using synthetic fur.

슬랙스 형태 적합성 평가의 정량적 평가 기준 설정 (Establishing Quantitative Evaluation Standards for the Shape Fitness test of Slacks)

  • 김선영
    • 한국의류산업학회지
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    • 제18권5호
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    • pp.695-707
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    • 2016
  • This study presents quantitative evaluation standards for the shape fitness test, conducted in the process of the slacks fit test. This study aims to quantify appearance sensory test of slacks for the objectification of qualitative evaluation methods in existing shape fitness tests. The subjects were women of standard body type between the ages of 18 and 24. Slacks differing in their ease in waist girth, hip girth, crotch length and knee length were designed to test their shape fitness. The gap volume distribution between the body and slack, angle of the baseline by body part, and ratio of total thickness from the sideline using 3D human body scan data (which reflect the results of the appearance sensory test) were presented as quantitative evaluation standards. There were less wrinkles in the wrinkle/overstretch and ease categories of the appearance sensory test; in addition, ease was adequate and small enough to comfortably perform basic human activities in the standing upright posture. The gap volume distribution analysis between body and slacks showed that curves increased in the slacks surface along with an increase of ease in slacks and suggested that wrinkles also increased. In the baseline's horizontal categories in terms of a $0^{\circ}$ horizontal angle, the range of angles were evaluated as adequate by the clothing expert group. The total thickness ratio of 0.5:0.5 divides into the sideline from the baseline.

경관분석 및 평가방법에 관한 연구 - 현상학적 접근 - (A Study on the Landscape Analysis and Evaluation Method : A Phenomenological Approach)

  • 임승빈
    • 한국조경학회지
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    • 제16권1호
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    • pp.43-51
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    • 1988
  • 경관평가에 있어서 현상학적 접근은 분석적이고 체계적인 기존의 과학적 방법들과 대비되는 새로운 차원의 접근방법을 보여주고 있다. 기존의 과학적 접근이 정량적, 환원주의적, 폐쇄적, 실험적인 특성을 지녔다고 한다면 현상학적 접근은 정성적, 총체적, 개방적, 체험적 특성을 지녔다고 말할 수 있다. 현상학적 접근에서는 개인의 선호도, 느낌을 경관평가의 주요 기준으로 삼고 있으나, 일정 집단의 평균적 반응보다는 개개인의 다양한 반응, 느낌, 의미 등을 더욱 중요시 여긴다. 이렇게 함으로써 현상학적 방법은 기존의 계량적 혹은 과학적 방법이 지닌 단점을 보완할 수 있는 가능성을 보여준다. 즉 계량적 혹은 과학적 방법에서는 평가대상이 되는 현상을 단순화시킴으로 해서 실제 현상그대로 보지를 못하기 쉬운데 비하여, 현상학적 접근에서는 실제 그대로의 현상을 보려고 시도하며 현상의 본질을 캐내려고 노력한다. 현상학적 접근은 총체적이며 정성적인 입장을 가짐으로해서 실용적인 경관평가 기법이 되기에는 한계가 있다고 볼 수 있으나, 이를 극복할 수 있는 효율적인 방법이 모색되어야 하겠다. 최근의 연구에서는 현상학적 개념과 신뢰성, 타당성 등의 과학적 형식기준을 동시에 만족시킬 수 있는 방법이 개발되고 있음을 볼 수 있으며 이는 매우 바람직한 일이라 할 수 있다. 경관평가에서 현상학적 접근의 대두는 기존의 체계적, 계량적 방법의 타당성(content validity)을 재점검할 수 있는 계기를 만들어 주고 있다.

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농촌다운 주거환경 조성을 위한 평가항목 개발 및 중요도 분석 - 네트워크 분석과 AHP 분석 활용 - (Development and importance analysis of evaluation factors for formation of future-oriented rural residential environment: using network analysis and AHP analysis)

  • 이차희;임정언;이상문;윤상헌
    • 농촌계획
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    • 제25권2호
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    • pp.89-98
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    • 2019
  • The purpose of this study is to develop the evaluation factors for formation of the future - oriented rural residential environment and to derive the importance of this evaluation factors. The main research methods are network analysis using Net-miner, AHP analysis and importance analysis for experts. The main research results are as follows. First, 6 factors for evaluation rural residential environment(environmental-sustainability, communality, self-reliance, aesthetic, enjoyment, settlement), 3 sub-factors of each factors, and key physical facilities(10 for rural center and 28 for rural villages) were derived by literature analysis and network analysis on it. Second, key priority factors that should be considered in physical formation of rural residential environment was deducted by AHP analysis. Improving accessibility of living services in the settlement factor, improvement of garbage collection and wastewater treatment system around the residential area, and ensuring topographic continuity in the environmental-sustainability factor was derived as a priority factors. Third, as a result of evaluation of the importance of physical facilities in the rural residential environment, there was a high demand for cultural welfare facilities in common. However, when compared with the villages where the harmony between the natural environment and the living environment is emphasized, convenience of living and accessibility of transportation were important in the rural center. These results suggest that solving the qualitative conditions as residential environment will help to attract new population. This study will contribute to enhance the qualitative level of the rural residential environment by suggesting strategic priority items when carrying out projects related to the rural residential environment creation in the future.

아이치 생물다양성 목표 11의 이론적 고찰 - 보호지역의 양적 확대 목표와 질적 향상 목표를 중심으로 - (A Study on Aichi Biodiversity Target 11 - Focused on Quantitative Expansion Goals and Qualitative Improvement Goals of Protected Areas -)

  • 홍진표;심윤진;허학영
    • 한국환경복원기술학회지
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    • 제20권5호
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    • pp.43-58
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    • 2017
  • This study aims to provide basic understanding for evaluating the quantitative and qualitative progress of national protected areas, through the theoretical review of Aichi Biodiversity Target 11 in order to comply with recommendations of international community and to conserve biodiversity. As a result of the study, Aichi Biodiversity Target 11 sets out the specific contents that the Parties should achieve for protected areas by identifying them as temporal and spatial goals. The temporal goal, the time schedule for achieving the goal, is 2020, and the spatial goal is divided into quantitative expansion goals and qualitative improvement goals. The quantitative expansion goals present the target coverage of protected areas separately terrestrial and marine. The qualitative improvement goals include the target areas for conservation and five conservation considerations. The conservation targets focus on the important areas with regard to biodiversity and ecosystem services. The five conservation considerations mean effective management, equitable management, ecological representativeness, connectivity, and integration into the landscape and seascape for protected areas. Finally, it suggests that two tracks of protected areas and other effective area-based conservation measures(OECMs) should be used as conservation measures to build an integrated system. The results of this study can be applied to quantitative and qualitative evaluation methods for protected areas and it can contribute to achieve quantitative expansion goals and qualitative improvement goals for them.

국가연구개발사업의 질적성과 평가를 위한 성과지표 연구 - 삼극특허를 중심으로 - (A Study on the Performance Indicators for Evaluating the Qualitative Performance of National R&D Programs - Focusing on the Triadic Patent Families -)

  • 안수용;조용희
    • 기술혁신연구
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    • 제30권3호
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    • pp.35-64
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    • 2022
  • 최근 국가연구개발의 집행예산은 증가 추세에 있고, 이에 따라 국가연구개발사업의 양적 성과 또한 증가하고 있으나, 질적 성과의 증가세는 양적 성과 대비 취약한 것으로 나타나고 있다. 특허등급 및 기술이전효율성이 낮은 기술 등 질적 성과 부진의 원인으로 '건 수' 위주의 성과평가에 대한 개선 필요성이 제기되고 있으며, 이에 대한 대응으로 다양한 '질적 성과지표'를 이용한 성과평가가 도입되고 있다. 본 연구에서는 여러 질적 성과지표 중 주요국(미국, 유럽, 일본) 특허청에 모두 출원하여 특허의 해외경쟁력을 측정할 수 있는 '삼극특허' 창출 과제를 대상으로 연구개발사업의 질적성과 평가를 위한 성과지표로서 삼극특허에 영향을 미치는 요인을 분석하였다. 분석결과, R&D규모 요인 및 과제특성 요인 중 일부는 삼극특허 창출에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 본 연구는 성과분석 측면에서 선행연구가 상대적으로 미진한 삼극특허를 관심대상으로 확장하고, 삼극특허 창출의 영향요인을 선형회귀분석(OLS)을 통해 살펴본 초기연구라는 점에서 의의가 있다.