• Title/Summary/Keyword: qualitative/quantitative analysis

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비즈니스 프로세스의 정성적 분석 방안 (Qualitative approach for business process analysis)

  • 홍대근;서의호;유기동
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회 2003년도 추계학술대회 및 정기총회
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    • pp.233-236
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    • 2003
  • Redesign of business processes still attracts a lot of interest. There have been a variety of quantitative approaches to analyze of business process. However, to examine and determine the quality-focused characteristics of the business process, a qualitative approach should be deployed. This paper introduces a qualitative approach process analysis, especially adopted the concept of the emotional engineering which is used in the area of the product design. To analyze the qualitative aspect of the business process, the emotional adjectives for the business process are used. The proposed methodology enables to determine which of business process is better or not in a more intuitive way.

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교사교육을 위한 공공 빅데이터 수집 및 스프레드시트 활용 기초 데이터과학 교육 사례 연구 (A Case Study of Basic Data Science Education using Public Big Data Collection and Spreadsheets for Teacher Education)

  • 허경
    • 정보교육학회논문지
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    • 제25권3호
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    • pp.459-469
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    • 2021
  • 본 논문에서는 현장 교사 및 예비교사를 위한 기초 데이터과학 실습 교육 사례를 연구하였다. 본 논문에서는 기초 데이터과학 교육을 위해, 스프레드시트 SW를 데이터 수집 및 분석 도구로 사용하였다. 이후 데이터 가공, 예측 가설 및 예측 모델 검증을 위한 통계학을 교육하였다. 또한, 수천명 단위의 공공 빅데이터를 수집 및 가공하고, 모집단 예측 가설 및 예측 모델을 검증하는 교육 사례를 제안하였다. 이와 같은 데이터과학의 기초 교육내용을 담아, 스프레드시트 도구를 활용한 34시간 17주 교육 과정을 제시하였다. 데이터 수집, 가공 및 분석을 위한 도구로서, 스프레드시트는 파이썬과 달리, 프로그래밍 언어 및 자료구조에 대한 학습 부담이 없고, 질적 데이터와 양적 데이터에 대한 가공 및 분석 이론을 시각적으로 습득할 수 있는 장점이 있다. 본 교육 사례 연구의 결과물로서, 세가지 예측 가설 검증 사례들을 제시하고 분석하였다. 첫 번째로, 양적 공공데이터를 수집하여 모집단의 그룹별 평균값 차이 예측 가설을 검증하였다. 두 번째로, 질적 공공데이터를 수집하여 모집단의 질적 데이터 내 연관성 예측 가설을 검증하였다. 세 번째로, 양적 공공데이터를 수집하여 모집단의 양적 데이터 내 상관성 예측 가설 검증에 따른 회귀 예측 모델을 검증하였다. 그리고 본 연구에서 제안한 교육 사례의 효과성을 검증하기 위해, 예비교사와 현장교사의 만족도분석을 실시하였다.

IPA분석을 이용한 지하철 이용자 서비스 특성에 관한 연구 (The Analysis of Service Characteristics for Subway Passengers Using The Importance-Performance Analysis(IPA))

  • 박정수;윤상훈;배기목;김태호
    • 한국철도학회논문집
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    • 제10권4호
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    • pp.420-430
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    • 2007
  • It is reported that many users of the subways in Seoul are not currently satisfied with the subway services. The cause of the dissatisfaction is that the qualitative items and indexes are not considered properly, and also does not diversify the evaluation items to follow the change of subway environment. Therefore in this study the evaluation items and indexes that can reflect of the subway users' characteristics are examined and synthesized. Then the characteristics of service are analyzed for the senior subway system users and junior subway system users that are classified with the cluster analysis. The result of the study is that the majority of users on subway are not satisfied the qualitative items which are safety, kindness, comfortableness, convenience excepting for punctuality and accessibility. So, if the service of subway users improve, the qualitative items is needed to consider with quantitative items.

국내 전자정부 연구동향에 대한 정량적 분석: 텍스트 마이닝과 네트워크 분석 기법을 중심으로 (Quantitative Analysis of Research Trends in Korean E-Government Using Text Mining and Network Analysis Methods)

  • 이수인;신신애;강동석;김상현
    • 정보화정책
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    • 제25권4호
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    • pp.84-107
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    • 2018
  • 기존에 수행된 국내 전자정부 동향연구는 정성적 연구방법에만 의존하는 약점을 지니고 있다. 이에 본 연구는 2018년 9월 현재 시점에서 1996~2017년까지의 데이터를 기반으로 정량적 분석을 수행하였다. 텍스트 마이닝을 통해 도출된 연구주제는 총 7가지였으며, 그중에서도 프레임워크와 공공정책 효과의 네트워크 중심성이 높은 것으로 식별되었다. 본 연구결과는 전자정부의 발전을 위해 필요한 학술적/정책적 시사점을 제공하였다. 시사점 중의 하나는 기존 연구가 주로 수행하던 방식인 정성적 분석방법 대신에 정량적 분석방법을 활용하여, 상대적으로 객관성 및 학문의 다양성 확보에 이바지한다는 점이다.

Priority survey between indicators and analytic hierarchy process analysis for green chemistry technology assessment

  • Kim, Sungjune;Hong, Seokpyo;Ahn, Kilsoo;Gong, Sungyong
    • Environmental Analysis Health and Toxicology
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    • 제30권sup호
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    • pp.3.1-3.11
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    • 2015
  • Objectives This study presents the indicators and proxy variables for the quantitative assessment of green chemistry technologies and evaluates the relative importance of each assessment element by consulting experts from the fields of ecology, chemistry, safety, and public health. Methods The results collected were subjected to an analytic hierarchy process to obtain the weights of the indicators and the proxy variables. Results These weights may prove useful in avoiding having to resort to qualitative means in absence of weights between indicators when integrating the results of quantitative assessment by indicator. Conclusions This study points to the limitations of current quantitative assessment techniques for green chemistry technologies and seeks to present the future direction for quantitative assessment of green chemistry technologies.

전자발찌 착용 대상자의 자아존중감 향상을 위한 차문화치료 프로그램의 효과성 연구 -의 보호관찰 성범죄자를 대상으로- (Tea Culture Therapy Program for the Improvement of Self-Esteem of the Offenders Monitored by GPS System -Targeted on the Sex Offenders Probationers in -)

  • 김인숙
    • 디지털융복합연구
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    • 제13권6호
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    • pp.307-315
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    • 2015
  • 본 연구는 전자발찌 착용 성범죄자들의 웰니스의 기본인 자아존중감 향상이라는 연구 목적에 적합한 보호관찰과 차문화치료를 융복합한 프로그램을 개발하여 전자발찌 착용 성범죄자들에게 적용하여 그 효과성을 검증하고자 한다. 이를 위해 본 연구는 U시 보호관찰소 차문화치료 프로그램에 참여한 전자발찌 착용 성범죄자들에게 편안하고 따뜻한 차문화치료적 환경속에서 대접받고 존중받음으로 긍정적 자아감과 바람직한 대인관계를 활발히 하는 질적변화가 나타났다. 또한 프로그램 실시 전, 후에 전체 대상자의 자아존중감 척도를 측정한 결과, 전체 연구 대상자들의 자아존중감이 통계적으로 유의하게 향상되었다. 이는 기존의 인지행동적인 접금보다는 인간존중과 수용적인 인본주의적 접근의 차문화치료프로그램의 효과로 나타난 것이라고 할 수있다.

악화환자 인지 및 대응을 위한 시뮬레이션교육에서 간호대학생의 임상판단력과 간호수행: 후향적 혼합연구 (Nursing Students' Clinical Judgment and Performance in Simulation of Recognizing and Responding of the Deterioriating Patient ; a retrospective mixed-methods)

  • 하이경
    • 중환자간호학회지
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    • 제16권2호
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    • pp.42-53
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    • 2023
  • Purpose : This retrospective mixed-methods study aimed to explore key considerations for designing effective simulated education in nursing, focusing specifically on the recognition and response to deteriorating patients. Methods : Quantitative and qualitative data were analyzed to assess the clinical judgment and performance of the nursing students. Descriptive statistics were used to analyze quantitative data related to prior knowledge, simulation satisfaction, clinical judgment, and nursing performance during deteriorating patient simulations. Qualitative content analysis was conducted for the reflective journal entries of the participants. Results : Quantitative analysis showed that most participants demonstrated a "being skillful" level of clinical judgment (33.1%) in effective response. At the beginner level, clinical judgment varied across effective noticing(39.7-82.8%), effective interpretating(77.6-82.8%), effective responding(3.4-86.2%), and effective reflecting(90.0-95.4%). Nursing performance in assessing patient respiration or SpO2 after request from a physician ranged from 46.6-48.3%. Qualitative analysis indicated that 48.5% of the participants anticipated a deteriorating condition and initiated appropriate actions, while 70% noticed patient unresponsiveness for the first time. Conclusion : To design an effective simulation program for identifying and addressing deteriorating patient care, a framework for observation and interpretation is essential, along with regular simulated training. It is important to design and assess simulation programs and to conduct thorough interviews with nursing students to gain insight into their clinical decision-making.

Image Quality and Lesion Detectability of Lower-Dose Abdominopelvic CT Obtained Using Deep Learning Image Reconstruction

  • June Park;Jaeseung Shin;In Kyung Min;Heejin Bae;Yeo-Eun Kim;Yong Eun Chung
    • Korean Journal of Radiology
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    • 제23권4호
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    • pp.402-412
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    • 2022
  • Objective: To evaluate the image quality and lesion detectability of lower-dose CT (LDCT) of the abdomen and pelvis obtained using a deep learning image reconstruction (DLIR) algorithm compared with those of standard-dose CT (SDCT) images. Materials and Methods: This retrospective study included 123 patients (mean age ± standard deviation, 63 ± 11 years; male:female, 70:53) who underwent contrast-enhanced abdominopelvic LDCT between May and August 2020 and had prior SDCT obtained using the same CT scanner within a year. LDCT images were reconstructed with hybrid iterative reconstruction (h-IR) and DLIR at medium and high strengths (DLIR-M and DLIR-H), while SDCT images were reconstructed with h-IR. For quantitative image quality analysis, image noise, signal-to-noise ratio, and contrast-to-noise ratio were measured in the liver, muscle, and aorta. Among the three different LDCT reconstruction algorithms, the one showing the smallest difference in quantitative parameters from those of SDCT images was selected for qualitative image quality analysis and lesion detectability evaluation. For qualitative analysis, overall image quality, image noise, image sharpness, image texture, and lesion conspicuity were graded using a 5-point scale by two radiologists. Observer performance in focal liver lesion detection was evaluated by comparing the jackknife free-response receiver operating characteristic figures-of-merit (FOM). Results: LDCT (35.1% dose reduction compared with SDCT) images obtained using DLIR-M showed similar quantitative measures to those of SDCT with h-IR images. All qualitative parameters of LDCT with DLIR-M images but image texture were similar to or significantly better than those of SDCT with h-IR images. The lesion detectability on LDCT with DLIR-M images was not significantly different from that of SDCT with h-IR images (reader-averaged FOM, 0.887 vs. 0.874, respectively; p = 0.581). Conclusion: Overall image quality and detectability of focal liver lesions is preserved in contrast-enhanced abdominopelvic LDCT obtained with DLIR-M relative to those in SDCT with h-IR.

Improvement of Educational Contents to Enhance the Efficiency of Construction Worksite Safety Training

  • Kim, Tae-Hui;Ahn, Sungjin;Lee, Taick-Oun;Kim, Suk Bong;Park, Young Jun
    • 한국건축시공학회지
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    • 제13권1호
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    • pp.75-83
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    • 2013
  • The prevention of safety accidents can be achieved through Harvey's 3E's: Engineering, Enforcement, and Education. On construction sites, however, enforcement and engineering did not prove to be valid ways of reducing the number of safety accidents, as enforcement and engineering have failed to overcome and/or supplement the realistic limits regarding the relatively lower education levels of construction workers and the communication issues with foreign workers. On the other hand, safety education can enable the advancement of safety management by enhancing the educational contents and their methods of delivery. To improve the efficiency of safety education via educational contents, this research conducted a qualitative and quantitative analysis on the validity of the newly educational contents by overviewing possible accident types in different work phases. Of the accident types identified by the qualitative analysis, neither highly important nor insignificant accident types were found, yet all the suggested types are found to be required. In addition, this study did not find any significant differences in the occurrence probability of safety accidents related to the level of importance of each type of accident. The qualitative analysis in this research verified that the suggested accident types can be valid, educational material that can take into account future safety accidents.

Genetic Variation of a Single Pollen-derived Doubled Haploid Population in Rice

  • Moon, Huhn-Pal;Kang, Kyung-Ho;Ahn, Sang-Nag;Choi, Seon-Hee
    • 한국작물학회지
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    • 제43권4호
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    • pp.250-253
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    • 1998
  • Somaclonal variation was observed in the field on doubled haploid plants derived from single pollen of a rice cultivar "Hwaseongbyeo". The variations of seven quantitative traits including plant height and one qualitative trait (pubescence) in 436 lines ($R_2$ generation) were analyzed. The number of lines which fell beyond the boundaries of the 95% confidence intervals of the check variety, Hwaseongbyeo was checked for each quantitative trait, and of those fertility showed the highest variation frequency (85.6%), followed by plant height (77.5%), flag leaf length (66.5%), grains per panicle (42.2%), days to heading (34.5%), panicle length (30.7%) and panicles per hill (22.7%). And the variations of quantitative traits except days to flowering appeared to move in the negative direction compared to "Hwaseongbyeo". Variability within lines was also observed for quantitative and qualitative traits. Twenty-nine $R_2$ lines (7%) segregated for pubescence and 130 $R_2$ lines (30%) showed variation with regard to fertility. This suggests that mutations usually occur before diploidization. Twenty-nine $R_2$ lines representing a wide spectrum of variation were chosen for RAPD analysis. The number of lines showing DNA polymorphism compared to Hwaseongbyeo ranged 0 from to 10 according to the primer used and this seems to indicate that specific loci have highly mutable genomic site.utable genomic site.

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