• Title/Summary/Keyword: Quantitative Research Method

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Quantitative Evaluation Method for Etch Sidewall Profile of Through-Silicon Vias (TSVs)

  • Son, Seung-Nam;Hong, Sang Jeen
    • ETRI Journal
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    • v.36 no.4
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    • pp.617-624
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    • 2014
  • Through-silicon via (TSV) technology provides much of the benefits seen in advanced packaging, such as three-dimensional integrated circuits and 3D packaging, with shorter interconnection paths for homo- and heterogeneous device integration. In TSV, a destructive cross-sectional analysis of an image from a scanning electron microscope is the most frequently used method for quality control purposes. We propose a quantitative evaluation method for TSV etch profiles whereby we consider sidewall angle, curvature profile, undercut, and scallop. A weighted sum of the four evaluated parameters, nominally total score (TS), is suggested for the numerical evaluation of an individual TSV profile. Uniformity, defined by the ratio of the standard deviation and average of the parameters that comprise TS, is suggested for the evaluation of wafer-to-wafer variation in volume manufacturing.

A Study on Securing Objectivity in Small-Scale Environmental Impact Assessments Using Delphi Analysis

  • Dong-Myung CHO;Ju-Yeon LEE;Woo-Taeg KWON
    • Journal of Wellbeing Management and Applied Psychology
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    • v.7 no.3
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    • pp.73-95
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    • 2024
  • Purpose: Since August 2000, the small-scale environmental impact assessment system has prevented indiscriminate development. However, its qualitative reports lack objectivity and consistency. This study analyzes these issues through literature and expert surveys and proposes improvements. Research Methodology: Samples were selected based on regional consultation numbers. Mitigation measures were categorized into qualitative and quantitative factors. Issues were identified, and improvements suggested. The Delphi method helped select evaluation items and propose a scoring table. Results and Conclusions: The Delphi method selected 14 absolute and 22 relative evaluation items, excluding 3 invalid ones. A 100-point scoring table was created, with points assigned based on element significance. A 1-point bonus was added for top-scoring elements to promote eco-friendly planning.

The Review of Instrumental Neutron Activation Analysis by $k_0$-standardization method ($k_0$-표준화방법에 의한 기기중성자방사화 분석법의 고찰)

  • Moon, Jong-Hwa;Chung, Yong-Sam;Kim, Sun-Ha
    • Analytical Science and Technology
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    • v.14 no.4
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    • pp.1075-1081
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    • 2001
  • Instrumental Neutron Activation Analysis as a representative method of nuclear analytical technique, has advantages of non-destructive, simultaneous multi-element analysis with the characteristics of absolute measurement method. Up to date, $k_0$-quantitative method which is accurate, convenient and user-friendly, has been generalized world-widely. In this study, it is intented to introduce the general concept of $k_0$-method and to measure $k_0$-parameters for the future implementation to our NAA system. For this objectives, the definition of relevant factors for the quantitative analysis and the equation for the experimental determination of parameters such as $Q_0$(${\alpha}$) and f were summarized. Furthermore, a foundation for the $k_0$-standardization method was prepared through the measurement of ${\alpha}$ and f-value which depend on the specific character of irradiation hole at NAA#1-hole of HANARO research reactor.

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Allocation of Safety Integrity Level for Railway Platform Screen Door System considering Semi-Quantitative Risk Reduction Factor (반 정량적 리스크 저감 요소를 고려한 철도 승강장 스크린 도어시스템의 안전 무결성 수준 할당)

  • Song, Ki Tae;Lee, Sung Ill
    • Journal of the Korean Society of Safety
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    • v.31 no.4
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    • pp.156-163
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    • 2016
  • There exists required safety integrity level (SIL) to assure safety in accordance with international standards for every electrical / electronics / control equipment or systems with safety related functions. The SIL is allocated from lowest level (level 0) to highest level (level 4). In order to guarantee certain safety level that is internationally acceptable, application of methodology for SIL allocation and demonstration based on related international standards is required. However, the theoretical and practical study for safety integrity level is barely under way in the domestic railway industry. This research studied not only the global process of SIL allocation to guarantee safety in accordance with international standards for safety related equipment and system, but the quantitative methodology based on international standard and the semi-quantitative methodology as alternative way for SIL allocation. Specifically, the systematic SIL allocation for platform screen door system of railway is studied applying the semi-quantitative methodology in order to save much time and effort compared to quantitative method.

Analysis of Research Papers Published in the Journal of Korean Academy of Nursing (최근 3년간 대한간호학회지 게재 논문의 동향)

  • Suh, Yeon-Ok;Park, Jeong-Sook;Yang, Jin-Hyang;Kim, Hae-Won;Suk, Min-Hyun;Shin, Hyun-Sook;Jang, Hee-Jung;Jung, Myun-Sook;Chung, Myung-Sill
    • Journal of Korean Academy of Nursing
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    • v.37 no.6
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    • pp.1013-1019
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    • 2007
  • Purpose: This study was to determine the current trend of nursing research as exploring both quantitative and qualitative methodologies, and to provide the explicit direction to improve the quality of published papers. Methods: Total of 366 articles published between 2004 and 2006 was reviewed using the criteria of analysis. Results: There was more number of quantitative studies than qualitative studies. More studies were conducted with subjects who had health problems, and studies that targeted women and elderly population have been significantly increased. In quantitative methodology, utilization of experimental and quasi-experimental designs has been increased, however descriptive study was dominant as yet. In qualitative methodology, studies using grounded theory and phenomenology were frequently published. It was noted that theoretical framework and rational for sample size were rarely presented in quantitative study. Philosophical position and the process of preparation for study, which guided the research, were not clearly described in qualitative study. Conclusion: The findings of this review suggest that published studies have been improved and diversified, however, detailed and clear evaluation tool that assesses study process and method should be developed as a way to further improve the quality of published papers.

Quantitative Analysis of Paeoniflorin from Paeonia lactiflora Using $^1H-NMR$

  • Yoo, Jong-Su;Song, Myoung-Chong;Ahn, Eun-Mi;Lee, Youn-Hyung;Rho, Yeong-Deok;Baek, Nam-In
    • Natural Product Sciences
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    • v.12 no.4
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    • pp.237-240
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    • 2006
  • Paeoniflorin, the major component of the root of Paeonia lactiflora, was quantitatively analyzed using $^1H-NMR$ spectrometry. The quantity of paeoniflorin was calculated by the ratio of the intensity of the signals (H-9, H-10, H-2', 6') to the aldehyde peak of the known amount of internal standard, 2,4,6-trihydroxybenzaldehyde. These results were compared with the conventional HPLC method. The contents of paeoniflorin in P. lactiflora, which were respectively calculated by H-9, H-10, H-2', 6' in the $^1H-NMR$ spectra and HPLC, were determined $2.60{\pm}0.07,\;2.44{\pm}0.09,\;2.77{\pm}0.12\;and\;2.46{\pm}0.16%$. The advantages of quantitative $^1H-NMR$ analysis are that can be analyzed to identify and quantify, and no reference compounds required for calibration curves. Besides, it allows rapid and simple quantification for paeoniflorin with an analysis time for only 20 min without any preprocessing.

Content Comparative Analysis and Classification for Piniellia ternate, P. pedatisecta and Typhonium flagelliforme by HPLC-PDA analysis (HPLC-PDA를 이용한 반하, 호장남성, 수반하의 분류 및 함량분석)

  • Jo, Ji Eun;Lee, A Yeong;Kim, Hyo Seon;Moon, Byeong Cheol;Choi, Goya;Ji, Yunui;Kim, Ho Kyoung
    • The Korea Journal of Herbology
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    • v.28 no.5
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    • pp.95-101
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    • 2013
  • Objectives : A quantitative method using high performance liquid chromatography with a photodiode array detector(HPLC-PDA) was established for the quantitative analysis of the four main compound and pattern analysis to classification Piiellia ternate, P. pedatisecta and Typhonium flagelliforme. Methods : The analytical procedure for the determination of P. ternata, together with the known main compounds uracil, uridine, guanosine and adenosine was established. Optimum HPLC-PDA separation of these P. ternata was possible on Luna C18(2) column material, using water and acetonitrile as mobile phase. The method was validated according to regulatory guidelines. In addition, this assay method were analyzed for the content of four main compound in P. ternata, P. pedatisecta and T. flagelliforme and by data obtained from the HPLC-PDA analysis was performed principal component analysis(PCA). Results : Validation results indicated that the HPLC method is well suited for the determination of the roots of P. ternata with a good linearity ($r^2$ > 0.999), precision and recovery rates. Analysis of HPLC-PDA, the average content of uracil, uridine, guanosine and adenosine was significantly higher in P. ternate>P. pedatisecta> T. flagelliforme order. The application of PCA to main compound data by HPLC-PDA permitted the effective discrimination among the three species. Conclusions : Analysis of both HPLC-PDA and PCA confirmed the fact that four main compound and pattern profiles of P. ternata, P. pedatisecta and T. flagelliforme were different from each other.

The Antecedents of Relationship Marketing and Customer Loyalty: A Case of the Designed Fashion Product

  • KHOA, Bui Thanh
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.2
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    • pp.195-204
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    • 2020
  • Customer loyalty is a desired and essential result for companies in a business environment with a lot of competition, of which the fashion industry is no exception. For the fashion industry, the competition between businesses is increasingly fierce with the appearance of tailored fashion brands for each customer, also known as a designed fashion brand. The objective of this study is to examine the relationship between the antecedents of the relationship (reputation of designer, social media marketing) and customer relationship (trust and intimacy), and loyalty of customer for a designed fashion brand. The mixed research method is used to achieve research objectives with qualitative and quantitative research method. Qualitative data was collected through in-depth interview with 12 participants in Ho Chi Minh City, while quantitative data was collected by a survey of 799 respondents in Ho Chi Minh City and Hanoi City. The results show that the antecedents of relationship marketing positively affect on customer relationship and customer loyalty. Moreover, customer relationship has a positive impact on the customer loyalty when shopping for fashion products. From the research results, some managerial implications are also proposed for the designed fashion brands to improve the relationship marketing performance.

A Study on Improvements of Research Performance Evaluation for Enhancing the Soundness of Academic Activities (학술 활동 건전성 제고를 위한 연구업적평가 개선에 관한 연구)

  • Younghee, Noh;Ji Hei, Kang;Yong Hwan, Kim;Jeong-Mo, Yang;Jongwook, Lee
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.33 no.4
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    • pp.93-114
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    • 2022
  • This study aims to propose the ways to improve the research performance evaluation to support the establishment of a sound research culture. For the study, we analyzed the cases of domestic and foreign research performance evaluation, and a survey and an interview were conducted for faculty and research performance evaluation officials, respectively. In the study, the direction of establishing the principle of research performance evaluation, the method of categorizing the type of research performance, the method and procedure of research performance evaluation, and necessary documents were proposed. First, eight principles were suggested to be considered in evaluating research achievements to ensure the validity, reliability, and transparency of the evaluation while supplementing the limitations of quantitative evaluation. Second, the main types of research achievements were categorized into journal articles, books, and presentations at academic conferences. Third, as a research achievement evaluation method, a hybrid evaluation using quantitative and qualitative and multiple measurement indicators was proposed. Fourth, a total of 11 steps (required 7 steps) were presented as a procedure for research achievement evaluation. Fifth, publications, evaluation documents, and committee chair's reports were proposed as major documents for research achievement evaluation. The research achievement evaluation improvement plan presented in this study should be flexibly applied in consideration of the characteristics of the academic and research fields and universities.

Near-Field Detection of Aβ Proteins Using Micro Beads

  • Lee, Seung-Jun;Sung, Hee-Kyung;Choi, Yo-Han
    • Journal of Sensor Science and Technology
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    • v.21 no.5
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    • pp.319-323
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    • 2012
  • In this paper, we present the possibility of quantification analysis for $A{\beta}$ captured by micro beads using Near-filed detection. In order to evaluate detection efficiency, detected signals were compared with different sizes of micro beads and a varied number of micro beads. Also, $A{\beta}$ deposits and $A{\beta}$ binding to micro beads were measured, therefore, we observed the $A{\beta}$ deposit and light scattering around the surface of micro beads induced by attached $A{\beta}$. This method can be used for quantitative analysis for not only the number of $A{\beta}$, but also the binding ratio of $A{\beta}$ to micro beads.