• 제목/요약/키워드: One-Dimensional Quality Factor

검색결과 45건 처리시간 0.022초

유연한 Quality factor가 가능한 단순한 광섬유 팁 공진 구조물 (Simple fiber tip assembly with flexible Quality factor)

  • 나경필;권오대
    • 한국광학회:학술대회논문집
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    • 한국광학회 2002년도 제13회 정기총회 및 2002년도 동계학술발표회
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    • pp.260-261
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    • 2002
  • For Near-field Scanning Optical Microscopy measurements, the fiber tip is glued on the side of one of the tuning fork prongs vertically to its extended direction. Higher Q-factor is attainable in this geometry than in the arrangement with the fiber tip parallel to the prong. A simple mechanical design is applied to hold the fiber tip above the gluing point. The overall tuning fork-fiber tip assembly gives another advantage of the flexible Q-factor enhancement. With this treatment, Q-factor higher than 3000 is easily achievable. As an operating instance, a grating is scanned for its one dimensional topographical image.

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카노 모형을 활용한 O2O 배달 앱 서비스 품질 요인 분석 (Classification and Evaluation of Service Quality Factors of O2O Delivery Applications Using Kano Model)

  • 이영찬;서동혁;송시훈
    • 산업융합연구
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    • 제15권2호
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    • pp.27-36
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    • 2017
  • 본 연구에서는 카노 모형과 설문조사를 바탕으로 O2O 배달 앱의 서비스 품질 요인을 분석하고, 서비스 품질을 몇 가지 차원별로 분류하였다. 분석 결과, 일원적 품질요소로는 정확한 정보전달, 다양한 종류의 음식점, 지불방식의 다양성, 메뉴선택의 다양성, 불편사항 해결, 서비스의 친절도, 음식의 맛과 질, 위생과 청결, 간편 결제 시스템 등이었고, 매력적 품질요소로는 최신 정보 업데이트, 신뢰성 있는 이용후기, 다양한 주문방법, 신속한 배달, 브랜드 이미지, 할인 포인트 결제 및 적립 등이었다. 당연적 품질요소는 나오지 않았지만, 불편사항 해결이 당연적 품질요소에 가까운 것으로 나타났다. 무관심 품질요소로는 정보알림 서비스와 이벤트 및 판촉이었다. 본 연구결과는 O2O 배달 앱 서비스 업체들이 어떤 서비스 품질요소에 집중해야 하는지 전략을 수립하는데 많은 도움을 줄 수 있을 것으로 기대한다.

Kano 모델을 적용한 의료관광교육서비스 품질개선에 관한 연구 (The Quality Improvement of Medical Tourism Education Service Applying Kano Model)

  • 변하림;박종우
    • 품질경영학회지
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    • 제48권2호
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    • pp.309-328
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    • 2020
  • Purpose: The purpose of this study is to find a way to improve the quality of medical tourism education services in Korea. Methods: This study used a method of conducting a survey of students who have completed medical tourism education and customer satisfaction coefficient and potential customer satisfaction index were calculated by applying the Kano model. Results: The results of this study are as follows; First, Eight medical tourism education service quality factors were classified as an attractive quality attribute. Second, Thirteen medical tourism education service quality factors were classified as an one-dimensional quality attribute. Third, Online education operation factor was classified as an indifferent quality attribute. Fourth, Instructor quality factor and physical environment quality factor showed relatively high better and high worse coefficients. Finally, According to the PCSI index, it was found that the scope of improvement was the largest when focusing intensively on the quality factors of instructors. Conclusion: This study suggests strategic implications for nurturing excellent professional manpower through quality improvement of education services by identifying the quality factors of major medical tourism education services perceived by students.

Low-threshold Optical Bistability Based on Bound States in the Continuum

  • Kim, Myunghwan;Kim, Sangin;Kim, Soeun
    • Current Optics and Photonics
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    • 제6권1호
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    • pp.10-14
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    • 2022
  • Low-threshold optical bistability is essential for practical nonlinear optical applications. Many bistable optical devices based on high-quality-factor resonators have been proposed to reduce the threshold intensity. However, demonstrating high-quality-factor resonance requires complex fabrication techniques. In this work, we numerically demonstrate optical bistability with bound states in the continuum in a simple one-dimensional Si photonic crystal. The designed structure supports bound states in the continuum, producing an ultrahigh quality factor without tough fabrication conditions. The threshold intensity of the designed device is 150 MW/cm2 at the optical communication wavelength. This scheme may lead to a new class of nonlinear photonics.

Kano모델과 Timko 모델을 이용한 의료소비자의 병원선택요인에 관한 연구 (A Study on Medical Consumers Hospital Selection Factors Using Kano Model and Timko Model)

  • 김수정;김준용;김준배
    • 한국병원경영학회지
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    • 제23권4호
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    • pp.40-52
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    • 2018
  • The purpose of this study is to identify medical consumers' hospital selection factors in response to the rapidly changing environment of medical industry. For that purpose this study classified consumers' hospital selection factors into three categories such that human factors including expertise, reliability, empathy; system factor including, convenience, differentiation, efficiency; and facility factor including tangibility, accessibility, and location, based on the previous studies and the results of a preliminary survey of the patients of a small private hospital. The nine factors were further divided into 23 more specific attributes. Then, an online survey was conducted to measure the perceptions of the 23 attributes by the medical consumers over the age of 20. The analysis of the survey data using Kano model and Timko model indicated that 14 of the 23 attributes were classified as attractive factors, eight attributes were or classified as, one-dimensional factors, and one attribute, doctors' educational background, was classified as indifference factor. Of the 14 attractive factors, "unique and differentiated services related to medical treatment" and "distance from home to hospital" had the highest customer satisfaction coefficients. Of the eight one-dimensional factors, "kind treatment," "providing adequate explanations," "accuracy of diagnosis," and "cleanness of facilities" had the highest customer satisfaction coefficients as well as the highest dissatisfaction coefficients. The findings indicate that these six attributes are the most basic and most impactful attributes that hospitals must manage strategically to improve their service quality and attract more medical consumers to their hospitals.

어반 아웃도어웨어에 대한 소비자 인식과 Kano 모델을 적용한 제품 만족·불만족에 대한 연구: 대학생을 중심으로 (Analysis of Consumer's Perception and Product Satisfaction·Dissatisfaction with Urban Outdoor Wear based on Kano Model: Focused on University Students)

  • 전대근;김희경;김혜란;박순지
    • 한국의류산업학회지
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    • 제18권1호
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    • pp.103-112
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    • 2016
  • This research was designed to figure out the perception and attitude of university students toward urban outdoor wear and to provide the guidelines for product quality improvement using Kano model. A total of 270 responses were analyzed by SPSS 20.0 through frequency and factor analysis. Respondents' levels for outdoor activity & outdoor products possession being still low, steady growth in urban outdoor wear market is expected. A total of eight quality factors were identified through factor analysis; suitability, production quality, functionality, ease of care, fabric performance, portability, fashionability, and symbolism. Based on Kano model, quality factors of urban outdoor wear were categorized into three groups: one-dimensional; indifferent; and must-be quality factor. It was found that consumers were satisfied with urban outdoor wear only when it meets the needs for suitability for body types and ease of care, meaning that manufactures should be cautious not to lose these features. Being must-be quality factor, production quality(form stability, quality of subsidiary materials), and fabric performance such as colorfastness should be basically satisfied. The relative importance of each quality feature on satisfaction/dissatisfaction was investigated using CSC(customer satisfaction coefficient). Based on the CSC, every item was classified again. Attractive quality features with large CSC were shown in suitability factor. Must-be quality features with small CSC were mainly shown in functionality and fabric performance factors. These findings imply that manufactures of urban outdoor wear should not only maintain the production quality but also focus on suitability features to differentiate their product with previous products.

Identification of Granule Bound Starch Synthase (GBSS) Isoforms in Wheat

  • Seo, Yong-Weon;Hong, Byung-Hee;Ha, Yong-Woong
    • 한국작물학회지
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    • 제43권2호
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    • pp.89-94
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    • 1998
  • Granule bound starch synthase (GBSS), also known as the '"waxy protein'", is responsible for the synthesis of amylose in the amyloplasts of cereal crops. In hexaploid wheat (Triticum aestivum L.), GBSS is involved in amylose synthesis and rolls as an important factor to determine flour quality and end-use quality in food products. Genes on three Wx loci have been found to encode GBSS in common wheats. We developed techniques for the purification and separation of GBSS in wheat. Three major GBSS isoforms, which were encoded by the genes on three loci, Wx-A1, Wx-B1, and Wx-D1 migrating differently by one dimensional SDS-po-lyacrylamide gel electrophoresis (1D SDS-PAGE), were identified. GBSS from 66 Korean hard and soft winter wheats were purified and determined for their Wx loci and four of them were identified possessing a null allele either at the Wx-A1 and Wx-B1 loci. With help of identification of three GBSS isoforms using 1D SDS-PAGE system, we are able to identify and monitor Wx gene expressions in breeding materials for developing waxy or partial waxy wheats without experiencing consecutive selecting generations.cting generations.

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Proteomic Analysis of Drought Stress-Responsive Proteins in Rice Endosperm Affecting Grain Quality

  • Mushtaq, Roohi;Katiyar, Sanjay;Bennett, John
    • Journal of Crop Science and Biotechnology
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    • 제11권4호
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    • pp.227-232
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    • 2008
  • Drought stress is one of the major abiotic stresses in agriculture worldwide. We report here a proteomic approach to investigate the impact of post-fertilization drought on grain quality in rice seed endosperm (Oryza sativa cv. IR-64). Plants were stressed for 4 days at 3 days before heading. Total proteins of endosperm were extracted and separated by two-dimensional gel electrophoresis. Not many protein spots showed differential accumulation in drought-stressed samples. More than 400 protein spots were reproducibly detected, including three that were up-regulated and five down-regulated. Mass spectrometry analysis and database searching helped us to identify six spots representing different proteins. Functionally, the identified proteins were related to protein synthesis and carbohydrate metabolism, such as Granule-Bound Starch Synthase (GBSS, Wx protein), which is thought to play a very important role in starch biosynthesis and quality, a very crucial factor in determining rice grain quality.

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한국 유방암 환자의 삶의 질에 대한 관련요인: 체계적 문헌고찰과 메타분석 (Factors Relating to Quality of Life in Korean Breast Cancer Patients: Systematic Review and Meta-analysis)

  • 박경연;김민주;양영옥
    • 기본간호학회지
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    • 제24권2호
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    • pp.95-105
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    • 2017
  • Purpose: A systematic literature review and meta-analysis were conducted to synthesis research findings on relationships of quality of life with multi-dimensional correlates in Korean breast cancer patients. Methods: For the study purpose, 18 studies were selected through a systematic process of searching the literature. Results: Among the general characteristics, variables having a significant relationship with quality of life were age (ES=.19), marital status (ES=.15), education (ES=.19), economic status (ES=.16), job status (ES=.10), and religion (ES=.13). Among the disease characteristics, type of treatment (ES=.12), length of time since diagnosis (ES=.13), stage of disease (ES=.14), length of time since operation (ES=.10), frequency of treatment (ES=.19), wound site and pain (ES=.16) were shown to have a significant relationship with quality of life. Depression (ES=-.60), one of the psychological factor, was the variable most significantly related to quality of life. Conclusion: The findings indicate that the variables which strongly impact quality of life in breast cancer patients are depression and pain.

축제 앱 사용자를 위한 축제 검색 요인분석 (Festival search factor analysis for festival application users)

  • 이창근;김순곤
    • 디지털콘텐츠학회 논문지
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    • 제16권6호
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    • pp.883-892
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    • 2015
  • 본 논문에서는 단조롭고 일률적으로 보여주는 축제 앱의 단점을 보완하기 위하여 문화관광축제 종합 평가 보고서의 만족도 평가항목과 국내 외 학자들의 축제 품질요인을 이용하여 요인분석을 실시하였다. 요인분석 결과 탐색적 요인분석에서 KMO 값은 0.821로서 나타났다. 요인적재치가 기준 이하인 항목은 제거를 하여 축제 검색요인은 접근성, 홍보안내, 행사내용, 축제상품, 먹을거리, 편의시설을 도출하였다. 신뢰도 분석에서는 Cronbach's ${\alpha}$(Alpha)값이 0.816으로 나타났다. 확인적 요인분석에서는 카이스케어 검정결과 p값이 0.289로 나타났으며, CMIN/DF 값도 1.100로 나타났다. GFI, AGFI, CFI, NFI, IFI 모두 적합도 기준치인 0.9 이상으로 나타났고 RMSEA 역시 0.018로 나타났다.