• 품질경영학회지
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• 제48권2호
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• pp.241-256
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• 2020

Purpose: Certain places in Seoul such as Shinchon, Hongdae, and Gangnam, often suffer from sudden overflow of mobile population which can cause serious safety problems. This study suggests the application of spatial CUSUM control chart in monitoring areal population mobility data which is recently provided by Seoul metropolitan government. Methods: Monitoring series of standardized local Moran's I enables one to detect spatio-temporal out-of-control status based on the accumulation of past patterns. Moreover, we visualize such pattern map for more intuitive comprehension of the phenomenon. As a case study, we have analyzed the female mobility population aged 25 to 29 appeared in 51 Jipgyegu near Hongik university on fridays from January, 2017 to June, 2018. They are validated by exploring related articles and through local due diligence. Results: The results of the analysis provide insights in figuring out if the change of the mobility population is short-term by particular incident or long-term by spatial alteration, which allows strategic approach in constructing response system. Specific case near popular downtown near Hongik University has shown that newly opened hotels, shops of global sports brand and franchise bookstores have attracted young female population. Conclusion: We expect that the results of our study contribute to planning effective distribution of administrative resources to prepare against drastic increase in floating population. Furthermore, it can be useful in commercial area analysis and age/gender specific marketing strategy for companies.

• 대한안전경영과학회지
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• 제15권2호
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• pp.243-253
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• 2013

This research paper introduces the application and implementation of medical decision metrics that classifies medical decision-making into four different metrics using statistical diagnostic tools, such as confusion matrix, normal distribution, Bayesian prediction and Receiver Operating Curve(ROC). In this study, the metrics are developed based on cross-section study, cohort study and case-control study done by systematic literature review and reformulated the structure of type I error, type II error, confidence level and power of detection. The study proposed implementation strategies for 10 quality improvement activities via 14 medical decision metrics which consider specificity and sensitivity in terms of ${\alpha}$ and ${\beta}$. Examples of ROC implication are depicted in this paper with a useful guidelines to implement a continuous quality improvement, not only in a variable acceptance sampling in Quality Control(QC) but also in a supplier grading score chart in Supplier Chain Management(SCM) quality. This research paper is the first to apply and implement medical decision-making tools as quality improvement activities. These proposed models will help quality practitioners to enhance the process and product quality level.

• 한국작물학회지
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• 제66권4호
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• pp.350-357
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• 2021

본 연구의 목적은 수집한 200 자원의 강낭콩 유전자원의 종피 색깔을 분석하여 HTML색 도표에 위치시켜 강낭콩 종피색의 특징을 세분화하고, 종피 내 성분을 예측하는 한편, 종피색의 분류에 따른 응용 방법을 모색하는 것이다. 다양한 종피색을 나타내는 것으로 알려진 강낭콩 이미지 데이터를 HTML 색도표를 이용해 객관화시켰다. 이를 통해 강낭콩 유전자원의 종피색은 크게 연두색, 노란색, 갈색, 빨간색, 흰색, 회색, 그리고 남색 총 7개 색상에 분포한다는 것을 확인했다. 또한 종피색이 각 색상별 농도에 따른 분포를 보인다는 것도 확인할 수 있었다. 강낭콩 종피는 붉은색에서 농도별 분포가 가장 많았고, 회색과 연두색은 농도별로 분포를 보이지 않고 한가지 색에만 분포했다. 이와 같이 색깔별로 분포하는 것을 기준으로 하여 우점하고 있는 색소를 예측하자면, 연두색 강낭콩은 클로로필, 노란색 강낭콩은 카로티노이드, 갈색, 빨간색, 흰색, 회색 그리고 남색은 안토시아닌 색소가 종피 색깔에 영향을 많이 주고 있는 색소임을 예측할 수 있었다. 이렇게 색상을 객관적으로 나타내면, 종피색에 따른 체계적인 유전자원의 관리와 육종, 재배에 응용이 가능하며, 정밀한 색 분별을 통한 기호 분석을 통해 마케팅에 응용하거나 원하는 색의 제품 생산에 이용할 수 있다. 이러한 방법은 팥과 같은 다양한 종피색을 가진 타 작물에서도 적용될 수 있다.

• 대한공간정보학회지
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• 제16권1호
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• pp.75-81
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• 2008

본 연구의 목적은 공단지역의 환경개선과 폐수위탁관리체계의 투명성을 확보하기 위해 GIS를 활용한 공장폐수 위탁관리 시스템의 구축방안에 대하여 연구하는데 있다. 공장폐수 위탁 및 수탁처리 전산관리 시스템은 공장폐수 위탁 및 수탁관련 정보 입력과 위탁확인서 출력을 위한 위탁 및 수탁 관리 시스템, 관리자가 기간별, 업종별, 폐수종류별, 업체별 위탁량을 통계분석 할 수 있는 통계분석 시스템, 위탁 업체 및 수탁업체의 공간정보와 공장폐수 위탁량 및 수탁량 분포도를 시민들에게 제공하는 WebGIS 시스템으로 구성하였다. 구축된 공장폐수 위탁관리시스템은 폐수의 발생 시점에서부터 완전 처리까지의 전 과정에서의 정확하고 확실하게 파악할 수 있을 것으로 판단된다. 업무의 전산화로 업무처리 시 발생되는 시간적, 경제적 손실을 저감할 수 있을 것으로 판단된다. 또한 공장폐수에 대한 정확한 발생량을 관리함으로써 인천지역에서 발생되는 수질오염사고를 사전에 예방하고 오염사고 발생 시 신속한 대처방안을 도출 할 수 있을 것으로 판단된다. WebGIS를 이용`한 공장폐수의 위탁량 및 수탁량 분포를 관리함으로써 시민들의 환경오염에 대한 생각을 고취시키고 지속적인 관리가 가능 할 것으로 판단된다.

• 한국식품영양학회지
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• 제22권1호
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• pp.123-131
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• 2009

The purpose of this study was to define the job description for food safety specialist, and to describe the duties and tasks of the job based on the detailed analysis of specific food safety work performed by dietitians. The job analysis was 8 professional panels and a Developing A Curriculum(DACUM) facilitator. The research was done in order to fully define the task element, process, and sequence of a food specialist and was completed by DACUM analysis. The job definition of food safety specialist is one who manages food safety through analysis, safety evaluation, inspection, and hazard blocking in all processes related to the purchase, distribution, storage, manufacture, and marketing of foods and food materials. The job description on the DACUM research chart for food safety specialist contained 7 duties and 79 tasks. Its duties were defined as the specific and independent work of a food safety specialist, and were composed of 7 duties, i.e. hazard analysis of foods and related affairs, safety evaluation of purchased food materials, safety management of food/food materials distribution/storage, safety management of food manufacture, safety examination of food marketing, administration affairs on food safety, and self-development. For the future, this study suggests a curriculum, that shall be basis of program planning and food safety operation for subjects within many schools.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2009년도 춘계학술대회
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• pp.393-400
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• 2009

품질향상을 위한 효과적인 공정관리체계는 기업의 생존에 있어서 매우 중요하다. 최근에는 제품의 수명과 관련된 신뢰성이 강조되면서, 신뢰성분포로 불리는 비정규분포하에서의 공정관리가 핵심과제로 여겨지고 있다. 특히 품질특성치가 비정규분포를 따를때, 정규가설에 기초한 공정관리기술을 사용한다면 심각한 오류가 초래될 수 있기 때문에, 비정규분포에서의 관리도와 신뢰성샘플링계획에 대한 중요성이 강조되고 있다. 본 연구의 목적은 비정규분포에서의 관리도와 신뢰성샘플링계획에 대한 최근연구를 조사하고, 보다 합리적이고 신뢰도 높은 공정분석에 대한 연구동향을 소개함으로써, 비정규분포하에서의 공정관리에 대한 발전적인 연구방향을 제시하는 것이다.

• 디지털산업정보학회논문지
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• 제10권2호
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• pp.1-11
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• 2014

Software reliability in the software development process is an important issue. Software process improvement helps in finishing with reliable software product. In this field, SPC (Statistical process control) is a method of process management through application of statistical analysis, which involves and includes the defining, measuring, controlling, and improving of the processes. The proposed process involves evaluation of the parameter of the mean value function and hence the values of the mean value function at various inter failure times to develop relevant time control chart. In this paper, was proposed a control mechanism, based on time between failures observations using Rayleigh and Burr distribution property, which is based on Non Homogeneous Poisson Process (NHPP). In this study, the proposed model is reliable in terms of hazard function, because it is more efficient in this area can be used as an alternative to the existing model. Through this study, software developers are considered by the various intended functions, prior knowledge of the software to identify failure modes to feed to some extent shall be able to help.

• 가정과삶의질연구
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• 제8권2호
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• pp.163-180
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• 1990

The objective of this study was to investigate the time used for daily activities by rural housewives. This study was carried out two aspects-the amount and the distribution of time. However, the characteristics of agriculture and the farming season influenced on rural housewives activities. There fore, in this study, survey areas divided into two groups-the traditional and the commercial agricultural area. And I conducted surveys in two times-the busy farming season and the leisure season for farmers. Data for 286 housewives(76 in traditional area on the leisure season, and 68 in commercial 142 in traditional area on the busy farming season)were collected by interviews, in which wives were asked to recall the used of time on the previous day, and a time record chart broken into fifteen minute intervals. The statistics for data analysis were frequency, percentile, T-test, and F-test by SPSS PC programs. The findings are as follows; 1)The average total time of rural housewives on labour was 8 hours 53 minutes, on socio-cultural activities 4 hours 18 minutes, and on physiological activities 11 hours 2 minutes. 2) The amount of time on agricultural labour was 6 hours 47 minutes in busy farming season, and 2 hour 45 minutes in leisure season. 3) The average time on household labour was 3 hours 51 minutes. 4) The amount of time on socioculture activities was 2 hours 19 minutes in busy farming, and 6 hours 16 minutes in leisure season. 5) The average time on physiological activities was 11 hours 2 minutes.

• 환경영향평가
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• 제10권2호
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• pp.135-145
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• 2001

This study was conducted to investigate the practical using of Geographic Information System(GIS) technology which are computer-based systems that are used to store and manipulate geographic information on the air pollution control and management in the macro city. For this study 130 samples were corrected by passive sampler in Seoul (25 distincts) distributed by TM-coordinate during November in 1997 to January 1998, and analysed by GC/MSD for 16 VOCs e.g., toluene, benzene and display using Arc/view GIS(version 3.2, ESRI Inc, U.S.A) for windows. The most VOCs concentration distribution in November, 1997 was higher than that of January, 1998 except benzene and 1,1,2-trichroloethan, bromobenzene. And products of the distribution of VOCs concentration display using GIS technology was effective as well as other display methods(e.g., contouring method, pie or column chart, graduated symbols), especially in mapping and symbolization capabilities for spatial pollutant status evaluation were very effective than other display methods.

• 품질경영학회지
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• 제46권3호
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• pp.717-738
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• 2018

Purpose: This study aims to analyze why surveys of a single set of customer requirement result in different Kano analyses depending on the survey questionnaire designs. Methods: This study singled out 14 common features from four different questionnaires of two studies of Smart Car features and analyzed them using the Kano model. Several methods and devices were used: Group Comparison and Timko Index were applied; Kano Distribution Index, Timko Dispersion and Kano Conformity were newly introduced for the quantitative analysis; Correlations between Timko indices from different Kano questionnaires were conducted; Heuristic Splitting technic for reinforcing attribute categorization is introduced. Results: Correlation Coefficient proved strong positive relations among the three questionnaires, whose agreement degree of the resulting Kano attributes showed less than 10% when Indifferent was ignored. Heuristic Splitting on Timko charts enhanced the degree of the resulting Kano attributes up to 80%. Conclusion: Among the questionnaires the representation of customer requirements tends to move by parallel shifts on the Timko chart maintaining their relative locations. Heuristic Splitting suggests a rational solution to the interpretation of those inexplicable attribute categories resulting from traditional Kano methods.