• 제목/요약/키워드: quantitative research methods

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연구방법론 과목의 교육내용 및 현황분석 (Research Methods and Library & Information Spence Education)

  • 박소연
    • 한국도서관정보학회지
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    • 제33권2호
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    • pp.259-326
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    • 2002
  • 한 학문분야의 연구의 질을 향상시키고, 연구를 수행하거나 비판할 수 있는 연구의 저변을 확대하기 위해서는 연구방법론의 견실한 교육이 매우 중요하다고 할 수 있다. 본 연구는 국내 문헌정보학 석사 과정에서의 연구방법론 교육의 현황과 특성을 분석하고, 연구방법론 교육의 질적 향상을 위한 방안을 제시하고자 한다. 이를 위해 본 연구는 문헌정보학 석사과정이 개선된 국내 22개 문헌정보학과 및 도서관학과를 대상으로 연구방법론 교육의 개선현황, 특성과 동향을 분석하고, 미국 문헌정보학 석사과정 교육과정과 비교하여 향후 연구방법론 교육에 대한 방안을 제시하고자 하였다.

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IT 보안 서비스 품질의 측정 방법에 관한 연구 : 정량 지표의 사용 가능성 (A Study on Measurements of IT Security Service Quality : Feasibility of Quantitative Measures)

  • 경지훈;김종수
    • 산업경영시스템학회지
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    • 제38권4호
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    • pp.30-38
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    • 2015
  • IT security service provides customers with the capability of protecting the networked information asset and infrastructures, and the scope of security service is expanding from a technology-intensive task to a comprehensive protection system for IT environment. To improve the quality of this service, a research model which help assess the quality is required. Several research models have been proposed and used in various service areas, but few cases are found for IT security service. In this work, a research model for the IT security quality has been proposed, based on research models such as SERVQUAL and E-S-QUAL. With the proposed model, factors which affect the service quality and the best quality measure have been identified. And the feasibility of using quantitative measures for quality has been examined. For analysis, structural equation modeling and various statistical methods such as principal component analysis were used. The result shows that satisfaction is the most significant measure affected by the proposed quality factors. Two quality factors, fulfillment and empathy, are the main determinants of the service quality. This leads to a strategy of quality improvement based on factors of emotion and perception, not of technology. The quantitative measures are considered as promising alternative measures, when combined with other measures. In order to design reliable quantitative measures, more work should be done on target processing time and users' expectation. It is hoped that work of this research will provide efficient tools and methods to improve the quality of IT security service and help future research works for other IT service areas.

보행로봇 재활치료가 편마비 뇌졸중 환자의 보행능력에 미치는 효과: 혼합연구설계 (The Effects of Robot-Assisted Rehabilitation on the Gait Ability of Stroke Patients with Hemiplegia: A Mixed Methods Research Study)

  • 박민경;하영미;조형제;전미양
    • Journal of Korean Biological Nursing Science
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    • 제23권1호
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    • pp.72-82
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    • 2021
  • Purpose: This study used a mixed methods research design in an attempt to verify the effects of robot-assisted rehabilitation on the gait ability of stroke patients with hemiplegia, and thereby further understand the benefits and challenges of stroke patients' experiences relying on robot-assisted rehabilitation. Methods: An exploratory sequential mixed methods study design was used in order to combine both quantitative and qualitative data. For the quantitative data collection, a total of 30 stroke patients with hemiplegia were recruited from one rehabilitation hospital. Qualitative data were collected through individual interviews using semi-structured questionnaires for a group of 15 patients who were currently undergoing robot-assisted rehabilitation. The data were analyzed through qualitative content analysis. Results: As a result of the quantitative analysis, there were significant differences between the two groups in terms of daily living activity patterns, total number of steps, and average walking speed. As a result of the qualitative analysis, the four main themes derived consisted of, 'curiosity about the usage of robot-assisted rehabilitation,' 'pleasure experienced while using the robots,' 'insufficient information about robots,' and 'a lack of education about robot-assisted rehabilitation.' Conclusions: Robot-assisted rehabilitation had a significant effect on the walking ability of stroke patients with hemiplegia. Additionally, stroke patients with hemiplegia experienced difficulty during the course of their robot-assisted rehabilitation, due to a lack of sufficient information on correct usage techniques. These quantitative and qualitative findings could provide the basic foundation for the development of an educational program on robot-assisted rehabilitation.

Identification of Superior Polyvoltine Hybrids (polyvoltine${\times}$bivoltine) of Silkworm, Bombyx mori L.

  • Rao, C.G.P.;Chandrashekharaiah;Basha, K.Ibrahim;Seshagiri, S.V.;Ramesh, C.;Nagaraju, H.
    • International Journal of Industrial Entomology and Biomaterials
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    • 제8권1호
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    • pp.43-49
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    • 2004
  • Ten promising polyvoltine mulberry silkworm strains(SDMGl, SDMG2, SDMG3, SDMG4, SDMWl, SDMW2, RMWl, RMW2, RMW3 and RMW4) that are superior in quantitative and qualitative traits have been synthesized in the polyvoltine breeding laboratory of Andhra Pradesh State Sericulture Research & Development Institute, Hindupur through systematic hybridization and appropriate selection methods. After the genotypes were found homozygous for the desired traits, they have been crossed with 3 bivoltine testers $(APS8, APS4 and {NB_2}{D_4})$ and thirty new hybrid combinations were developed for the assessment of their hybrid performance. Phenotypic expressions of economically important quantitative and qualitative traits of fist filial generation were measured and subjected for statistical analysis. Evaluation Index and Subordinate Function methods were employed for the assessment of hybrid performance since they are widely used in silkworm hybrid evaluation. Total of seven poly${\times}$bivoltine combinations, which ranked high in both the methods, were selected as potential combinations for further field test. These combinations also ranked significantly higher than the control hybrid (APMl${\times}$APS8).

Relative Quantification of Glycans by Metabolic Isotope Labeling with Isotope Glucose in Aspergillus niger

  • Choi, Soo-Hyun;Cho, Ye-Eun;Kim, Do-Hyun;Kim, Jin-il;Yun, Jihee;Jo, Jae-Yoon;Lim, Jae-Min
    • Mass Spectrometry Letters
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    • 제13권4호
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    • pp.139-145
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    • 2022
  • Protein glycosylation is a common post-translational modification by non-template-based biosynthesis. In fungal biotechnology, which has great applications in pharmaceuticals and industries, the importance of research on fungal glycoproteins and glycans is accelerating. In particular, the importance of quantitative analysis of fungal glycans is emerging in research on the production of filamentous fungal proteins by genetic modification. Reliable mass spectrometry-based techniques for quantitative glycomics have evolved into chemical, enzymatic, and metabolic stable isotope labeling methods. In this study, we intend to expand quantitative glycomics by metabolic isotope labeling of glycans in Aspergillus niger, a filamentous fungus model, by the MILPIG method. We demonstrate that incubation of filamentous fungi in a culture medium with carbon-13 labeled glucose (1-13C1) efficiently incorporates carbon-13 into N-linked glycans. In addition, for quantitative validation of this method, light and heavy glycans are mixed 1:1 to show the performance of quantitative analysis of various N-linked glycans simultaneously. We have successfully quantified fungal glycans by MILPIG and expect it to be widely applicable to glycan expression levels under various biological conditions in fungi.

Application of Quantitative Assessment of Coronary Atherosclerosis by Coronary Computed Tomographic Angiography

  • Su Nam Lee;Andrew Lin;Damini Dey;Daniel S. Berman;Donghee Han
    • Korean Journal of Radiology
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    • 제25권6호
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    • pp.518-539
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    • 2024
  • Coronary computed tomography angiography (CCTA) has emerged as a pivotal tool for diagnosing and risk-stratifying patients with suspected coronary artery disease (CAD). Recent advancements in image analysis and artificial intelligence (AI) techniques have enabled the comprehensive quantitative analysis of coronary atherosclerosis. Fully quantitative assessments of coronary stenosis and lumen attenuation have improved the accuracy of assessing stenosis severity and predicting hemodynamically significant lesions. In addition to stenosis evaluation, quantitative plaque analysis plays a crucial role in predicting and monitoring CAD progression. Studies have demonstrated that the quantitative assessment of plaque subtypes based on CT attenuation provides a nuanced understanding of plaque characteristics and their association with cardiovascular events. Quantitative analysis of serial CCTA scans offers a unique perspective on the impact of medical therapies on plaque modification. However, challenges such as time-intensive analyses and variability in software platforms still need to be addressed for broader clinical implementation. The paradigm of CCTA has shifted towards comprehensive quantitative plaque analysis facilitated by technological advancements. As these methods continue to evolve, their integration into routine clinical practice has the potential to enhance risk assessment and guide individualized patient management. This article reviews the evolving landscape of quantitative plaque analysis in CCTA and explores its applications and limitations.

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.

전자회절을 이용한 격자상수의 측정 정확도 향상 (Accuracy Improvement of Lattice Parameters Measured from Electron Diffraction Data)

  • 이상길;송경;김진규
    • Applied Microscopy
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    • 제41권1호
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    • pp.75-79
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    • 2011
  • For quantitative analysis of nano-crystal structure, we reported the accuracy improvement method of lattice parameters measured from electron diffraction. For calculation of Au lattice parameters used as a standard crystal structure, it was considered two different acquisition methods (detector and enegy-filter) and three different calculation methods (conventional, least-square and regression fit). As a result, the measurement reliability could be enhanced by using CCD camera which gives higher performance, while energy-filtering did not affect the improvement the camera constant accuracy. Also, the accuracy of lattice parameters could be improved up to $10^{-4}$ order by regression fitting with correction formula. Finally, it is expected that the combination of regression fitting and intensity extraction from energy-filtered precession electron diffraction gives a solution of quantitative structure analysis for unknown nano-crystals.

북한이탈주민의 건강 관련 연구 동향 (The Trends in Research on the Health of North Korean Refugees)

  • 임현주;이건아;양숙자
    • 지역사회간호학회지
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    • 제28권2호
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    • pp.144-155
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    • 2017
  • Purpose: This study aims to identify the general characteristics, subjects, and methods of research on the health of North Korean refugees through a systematic literature review. Methods: A total of 140 studies on health were reviewed using the analytical framework developed by the researchers. Results: The quantitative research comprised 90.7% of the studies, whereas the qualitative research were 7.9% of them. Approximately 81.4% of those reviewed have publication dates spanning 2006 to 2015. Only 13.6% of the studies were conducted with the approval of an institutional review board. The subjects of studies were psycho-social health (151.8%), behavioral health (28.5%), cognitive health (15.0%), physical health (12.2%), integrated health (7.8%), and spiritual health (2.8%). Within the quantitative studies reviewed, the most commonly used study design was survey research (86.0%). The two sampling methods used most often were convenience sampling (53.5%) and snowball sampling (19.4%), and the most commonly used data-collection method were questionnaires (94.6%). As for the qualitative studies, the most commonly used study design was phenomenology. Conclusion: The results suggested that the reviewed studies focused on physical health more than psycho-social health, and physiological measurement more than questionnaires. Ethical considerations need to be expanded.

부모.자녀건강학회지 논문분석 (창간호-2009) (Analysis of Research Papers Published in the Korean Parent-Child Health Journal (1998-2009))

  • 박혜숙;오진아
    • 부모자녀건강학회지
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    • 제14권1호
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    • pp.1-8
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    • 2011
  • Purpose: This study was aimed to classify the major subjects and theme and to analyze the data collection and analysis method in research papers published in the Korean Parent-Child Health Journal of the Academic Society of Parent-Child Health since 1998. Methods: A total 152 studies published from the first edition to volume 12, number 2 were reviewed using structured analysis criteria developed by researchers; research type, research design, research subjects, research theme, data collection and analysis method. Research theme was founded 4 nursing domains. Data collection and analysis method of papers were limited to quantitative and qualitative researches. Results: One hundred papers conducted quantitative research; 79.0% used survey design. Most of the data collection and analysis method in quantitative research were self-reported questionnaire (69.4%) and parametric statistics respectively. The research subjects of sixty three papers were parent with well or child. The common domain studies was human related concepts such as raring. Conclusion: The findings of this study suggest that published studies have been improved and diversified, however, detailed and clear evaluation tool that assess study process and method should be developed as a way to further improve the quality of published papers in the Korean Parent-Child Health Journal.

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