• Title/Summary/Keyword: MDS analysis

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Soil quality assessment for cadmium uptake of Artemisia princeps at abandoned metalliferous mines using statistical analysis (폐금속 광산에 식생하는 쑥의 카드뮴 흡수 해석을 위한 통계적 토양질 평가)

  • Jo, Hun-Je;Kim, Dae-Yeon;Lee, Hyun-Joon;Oh, Hyun-Ju;Kang, Sung-Wook;Kim, Jeong-Gyu;Jung, Jin-Ho
    • Journal of Korean Society of Environmental Engineers
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    • v.32 no.1
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    • pp.47-52
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    • 2010
  • Physical, chemical and biological properties of soils and cadmium(Cd) content of Artemisia princeps var. orientalis collected from 10 metalliferous mines were analysed. Cd contents of unplanted soils and rhizosphere soils were not significantly different(p < 0.05), and mean values were 5.92 and 5.91 mg/kg, respectively. In addition, Cd content of rhizosphere soils were correlated with Cd content of Artemisia princeps (p < 0.05, ${R^2}_{shoot}$ = 0.3120, ${R^2}_{root}$ = 0.4177). Minimum data set(MDS) of soil quality parameters for statistical assessment of Cd uptake was established by principal component analysis, and it was identified as organic matter(OM), dehydrogenase activity(DHA), pH, exchangeable Mg. According to multiple regression analysis using the MDS, coefficients of determination ($R^2$) for Cd uptake of shoot and root of Artemisia princeps were found to be 0.3418 and 0.5121, respectively. This suggests that statistical soil quality assessment using the MDS seems a useful tool to interpret heavy metal uptake of plant.

A Study on the Image Positioning Strategy according to the Games of Marine Sports (해양스포츠 종목에 따른 이미지 포지셔닝 전략에 관한 연구)

  • PARK, Tae-Seung
    • Journal of Fisheries and Marine Sciences Education
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    • v.29 no.2
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    • pp.526-536
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    • 2017
  • This study intended to understand similarity of image between games and position of image attribute perceived by consumers according to the games of marine sports using MDS (Multidimensional Scaling). Through the foregoing, this study aims to provide preliminary data for establishing marketing strategies for games of marine sports by accurately understanding images of marines sports perceived by consumers. For survey targets, this study selected students of K University located in Gyeonggi-do as a population, and extracted samples using convenience sampling out of non-probability sampling methods targeting 200 students who showed intention of participation in this study, and total 188 sheets of questionnaire were used as final data excepting 12 sheets that are filled up unfaithfully or considered unreliable. For data processing, this study conducted Frequency Analysis, Descriptive Statistical Analysis, Reliability Analysis, MDS (Multidimensional Scaling) and Multiple Regression Analysis, and study results show that water ski and wakeboard(.602) have the most similar image attribute, indicating that image attributes of scuba diving and water ski(2.031) are positioned farthest with each other. As for image attribute, image attribute of water ski has appearance and progressiveness, windsurfing has an image attribute of positive, scuba diving has an image attribute of negation, and marin rafting has an image attribute of friendliness.

Preference Analysis for the Pedestrian Space in Large-scale Residential Complex by Multi Dimensional Scaling -Focused on the Haeundae New town in Busan- (다차원 척도법을 이용한 대규모 주거단지 보행공간의 선호도 분석 -부산광역시 해운대 신시가지를 대상으로-)

  • Kim, Yu Jun;Kang, Youn Won;Kim, Jong Gu
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.34 no.1
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    • pp.333-340
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    • 2014
  • We analyzed pedestrian preference and features of preferential space by MDS (Multi Dimensional Scaling). As the result, features of pedestrian space in dimension 1 could be interpreted as "Segregation of Pedestrian and Vehicle", and features of pedestrian space in dimension 2 could be read like "Natural-City". And as a result of vector analysis about preferential of pedestrian, a pedestrian mall between housing complex, pedestrian space in pocket park, pedestrian space in neighborhood park, and pedestrian space around public facilities was the best preferential space. On the other hand, pedestrians tended to dislike pedestrian space between detached.

Analysis on Nursing Diagnosis Classifications and Assessment Tools in Home Care (가정간호분야 간호진단 분류체계 및 사정도구 분석)

  • So, Ae-Young
    • Research in Community and Public Health Nursing
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    • v.12 no.1
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    • pp.3-21
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    • 2001
  • Nursing diagnosis classification is needed to define nursing phenomena and set up nursing plans. The purpose of this study is to develope common nursing diagnosis by comparing and analysing nursing diagnosis classification systems and assessment tools in home care. The target home care nursing diagnosis classifications and tools are HHCC. NANDA. OMAHA. MDS_HC 2.0. OASIS-Bl. Results of this study are as follows: - The number of components of nursing diagnosis classifications and tools is HHCC 4. NANDA 9. OMAHA 4. MDS_HC2.0 6. OASIS-B1 10. - The number of common nursing diagnosis in home care is summed up 51 which are physical heal th 17. social health 5. psychological health 11. health related behavior 13. environment 3.

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Assessment of Educational Conditions for 28 National Universities in South Korea

  • Jeong, Dong-Bin
    • Asian Journal of Business Environment
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    • v.7 no.1
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    • pp.25-29
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    • 2017
  • Purpose - In this paper, we categorize and segment the 28 national universities in South Korea and measure the degree of dissimilarity (or similarity) between pairs of ones by using dissimilarity distance matrix and cluster analysis, respectively, based on the seven quantitative evaluation of educational conditions (percentage of small-scale courses, percentage of lecture by the faculty, collection of books per student, material purchase per student, percentage of building capacity, percentage of real estate capacity and rate of accommodation) in 2015. In addition, multidimensional scaling (MDS) techniques can obtain visual representation for exploring patterns of proximities among 28 national universities based on seven attributes of educational conditions. Research design, data, and methodology - This work is carried out by the 2015 Announcement of University Information, which is provided by Ministry of Education in South Korea and utilized by multivariate analyses with CLUSTER, PROXIMITIES and ALSCAL modules in IBM SPSS 23.0. Results - We make certain that 28 national universities can be categorized into five clusters which have similar traits by applying two-stage cluster analysis. MDS is utilized to perform positioning of grouped places of cluster and 28 national universities joining every cluster. Conclusions - Both types and traits of each national university can be relatively assessed and practically utilized for each university competitiveness based on underlying results.

Improving Interpretability of Multivariate Data Through Rotations of Artificial Variates

  • Hwang, S.Y.;Park, A.M.
    • Journal of the Korean Data and Information Science Society
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    • v.15 no.2
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    • pp.297-306
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    • 2004
  • It is usual that multivariate data analysis produces related (small number of) artificial variates for data reduction. Among them, refer to MDS(multidimensional scaling), MDPREF(multidimensional preference analysis), CDA(canonical discriminant analysis), CCA(canonical correlation analysis) and FA(factor analysis). Varimax rotation of artificial variables which is originally invented in FA for easy interpretations is applied to diverse multivariate techniques mentioned above. Real data analysisis is performed in order to manifest that rotation improves interpretations of artificial variables.

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Prototype Extraction for the Categorization of Lotus and Crane Patterns Using Qualitative and Quantitative Approaches (질적, 양적 접근방법에 의한 연화문, 사문의 분류원형 추출)

  • 장수경;김재숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.20 no.6
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    • pp.1016-1026
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    • 1996
  • The purpose of this study was to extract protypes from features and concrete images of Lotus and Crane patterns. A qualitative and a quantitative methods were used. Qualitative informations were obtained from depth Interviews for pattern selection and feature extraction, and quantitative informations from a quail-experiment for pattern caregorization. The subjects were 20 female design students and non-design, students in Teajon. The results were summerized into a similarity metrix which was interpreted by the cluster analysis and the multi-dimensional scling(MDS). The patterns for the study were grouped into 8 clusters. Four dimensions were chosen for the MDS. The location of each pattern was visualized in a 2-dimesional spaces and the location of each cluster in a 3-dimensional spaces. The first dimension, "Lotus" vs "Crane" refired to pattern types, and the second dimension, "realistic" vs "transformable", the transformability. The third dimension, "simple" vs "complex", refired to the degree of simplification, and the forth dimension, "continuous" vs "discontinuous", continuity. The results of the Quantitative analysis could be summerized into 3-level prototype hiararchy In the first level, the patterns were devided clearly into two groups. Lotus and Crane by pattern types. In the second levelk, each group was devided into twosubgroups by continuity. In the third, each subgroup was divided into four subgroups by transformability and the degree of simplification. Four protypes, the final targets of the present study, were extracted from the third level. The are Stylized, Realistic, Decorative, Abstract types.d from the third level. The are Stylized, Realistic, Decorative, Abstract types.

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Analysis of Crosstalk between PCB Traces in Frequency and Time Domain (주파수 및 시간 영역에서 인쇄회로기판 선로의 혼신 해석)

  • 이애경;심환우;조광윤
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.7 no.5
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    • pp.430-439
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    • 1996
  • In printed circuit board (PCB) design, it is necessary to predict the crosstalk effect among traces on the circuitary behavior. In this paper, crosstalk between parallel or crossing traces was treated by the finite difference time domain (FDTD) method. They are the typical models of PCB traces and the crosstalk is a major contributor in the creation of electromagnetic interference (EMI). The crosstalk effect was computed for the variation of distance spacing and length of parallel traces and crossing traces. The results in time and frequency domain are discussed and compared with those using MDS(microwave design system) and HFSS(high frequency structure simulator). The comparison shows that the FDTD method can be of wide application in analysis model and save the time required for calculation.

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A Study on Positioning of Restaurants Based on Their Competitive Relationships and Consumer Preferences - Focused on Six Family Restaurants in the Metropolitan Area - (패밀리 레스토랑의 경쟁 관계와 고객 선호도에 대한 포지셔닝 연구 - 수도권의 6개 패밀리 레스토랑을 중심으로 -)

  • Ahn, Sung-Sik;Ra, Young-Sun
    • Culinary science and hospitality research
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    • v.13 no.1 s.32
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    • pp.24-40
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    • 2007
  • This study investigated an effective countermeasure of each restaurant under the present market conditions by grasping consumers‘ brand recognition and preferences over six restaurants in the metropolitan area centering around Seoul and comparing and analyzing selection properties that satisfy customers. The survey used a self-recording method that respondents write in the answers in person, and its subjects were the customers of restaurants in the metropolitan area from July to August, 2006. We made the MDS(multidimensional scaling) analysis of the available data from 408 respondents, using the SPSS statistical analysis program. The result was as follows. First, there were intensely competitive relationships between Nolboo Bossam and Wonhalmeoni Bossam, and between Outback Steakhouse and TGIF. Marche and Bennigan’s, however, didn‘t have a competitive relationship but kept a complementary one. Second, Wonhalmeoni Bossam was most favorably commented upon in its facilities, atmosphere, location, services, convenience(business hours, parking, transportation), recognition(popularity, fame, advertisement), sanitation and cleanliness, reasonable prices (food and drinks), etc., and then came Nolboo Bossam, TGIF, Outback Steakhouse, Bennigan’s, and Marche in that order. Third, in case of selection properties on taste of food, TGIF was estimated as the best, and then came Outback Steakhouse, Bennigan's, Marche, Wonhalmeoni Bossam, and Nolboo Bossam.

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A Study on the Positioning Strategy of Restaurants for Competitive Advantage : Focused on the Haeundae Special Tourism Zone in Busan (경쟁우위를 위한 레스토랑 포지셔닝 전략에 관한 연구 - 해운대 관광 특구를 중심으로 -)

  • Hong, Yun-Jung;Ahn, Sung-Sik;Park, Ki-Yong
    • Culinary science and hospitality research
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    • v.12 no.3 s.30
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    • pp.219-236
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    • 2006
  • The purpose of this study is to examine the elements that satisfy customers in order for restaurants to survive in competition, and to examine effective positioning strategies. Since the designation of Haeundae in Busan as a Special Tourism Zone, diverse food service markets have been established and various marketing activities are anticipated accordingly. The results of this study can be summarized as follows: First, after the examination of the competitive relationships among restaurants, based on the image similarity data, it was found that Bennigan's, Outback Steakhouse, and T.G.I. Friday's are in close proximity with one another. Hence the fierce competition between them. Secondly, as a result of PC-MDS PROFIT analysis, a positioning map was drawn with image similarity measurement of the restaurants and scores 9 evaluation categories for each brand name as follows: food taste, food price, service, access convenience, hygienic condition and cleaning, atmosphere, various events, circumferential environment, and public image. Thirdly, as a result of MDPREFMAP analysis based on the customer preference, data from the restaurant brand names, an ideal location of a restaurant preferred by customers and the position of restaurant brand names were indicated at the same time.

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