• Title/Summary/Keyword: Correspondence Analysis

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Characteristics of Severe Hair Loss, Psychological Problems, Treatment Practice and Life Style

  • Choi, Hyun-Seok;Kang, Young-Suk;Park, Byung-Chun
    • Journal of the Korean Data and Information Science Society
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    • v.19 no.4
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    • pp.1233-1246
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    • 2008
  • This study examines characteristics of people who are experiencing severe hair loss problems. We focus on how these characteristics are related to their psychological problems, hair loss treatments, wig-wearing practices, and life styles. We gathered survey data from people who visited wig shops for their hair loss problems. The study shows that men and women have different characteristics in every aspect we consider.

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Observation and Evaluation of Zooplankton Community Characteristics in the Petite Ponds (Dumbeong) for Irrigation: A Case Study in Goseong Region of South Korea (남부지역 소형 관개용 못들에서의(둠벙) 동물플랑크톤 군집특성 조사 및 평가)

  • Kim, Hang-Ah;Choi, Jong-Yoon;Kim, Seong-Gi;Do, Yuno;Joo, Gea-Jae;Kim, Dong-Kyun;Kim, Hyun-Woo
    • Korean Journal of Ecology and Environment
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    • v.45 no.4
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    • pp.490-498
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    • 2012
  • This study demonstrates the investigation of zooplankton communities (e.g. rotifers, cladocerans and copepods) and environmentally related driving factors (e.g. elevation, area size, water depth, types of dike construction, and bottom substrates). We hypothesized that zooplankton community structure and composition would be influenced by ambient driving forces in different scales of the irrigation ponds (Dumbeong). A total of 66 zooplankton species/groups (56 rotifers, 9 cladocerans, 1 copepods) were found and identified at 45 Dumbeong of Goseong region (i.e. Goseong-gun) in 2011. The rotifers occupied 84.9% of the total zooplankton abundance. We could categorize a clear separation of zooplankton communities into 4 different patterns based on cluster analysis. Zooplankton diversities in Dumbeongs were lower than those in natural ponds or wetlands. In addition, community structure of zooplankton was also simpler and had a broken stick distribution based on SHE analysis. Species composition in each Dumbeong was not significantly discriminated each other. The result of canonical correspondence analysis (CCA) pinpointed that significant influential variables upon zooplankton community were dissolved oxygen percent saturation, pH, and Dumbeong's material. This study indicated that morphological type of the Dumbeong and its water quality could determine the community structure of zooplankton. Furthermore, the connectivity between ambient habitats and materials could be necessary to be rigorously considered in respect to producing the Dumbeongs to subsidize alternative habitats for wetland ecosystem in freshwater landscape.

Employing Informetric Analysis to Identify Dominant Research Areas in the Top Ranking U.S. LIS Schools (계량정보학적 분석을 통한특정 대학원의 핵심 연구분야 파악: 미국 상위 10개 문헌정보학 대학원을 대상으로)

  • Kim, Hae-Young;Lee, Ji-Hye;Chung, Young-Mee
    • Journal of the Korean Society for information Management
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    • v.25 no.2
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    • pp.143-155
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    • 2008
  • Authoritative as well as objective information on ranking or dominant research areas of academic departments/schools in a certain discipline is essential for the graduate school applicants. In this study, we performed an informetric analysis to identify dominant research areas in the top 10 U.S. LIS schools. We used two different datasets of research productivity and research interests of the LIS faculty. The correspondence analysis method was employed to graphically display the association between research areas and the LIS schools. We found that the research Productivity data collected from SSCI database generated a very informative map presenting which research areas were dominant in which LIS schools. We also found that for the two most productive suhject areas in LIS over the past 10-year period, the proportion of research articles in information retrieval decreased to a great extent in the recent 5-rear period, whereas that of information seeking behavior showed an almost same degree of increase.

The Influence of Nutrients Concentration and the Ratio on Phytoplankton Community Structure during Late Spring and Early Summer in Sagami Bay, Japan (춘계와 하계의 영양염 농도와 그 구성비가 식물플랑크톤의 군집구조에 미치는 영향평가)

  • Baek, Seung-Ho;Shimode, Shinji;Han, Myung-Soo;Kikuchi, Tomohiko
    • ALGAE
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    • v.23 no.4
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    • pp.277-288
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    • 2008
  • The relationship between nutrients and phytoplankton dynamics was investigated daily from 12 April to 22 July 2003 in Sagami Bay, Japan. According to multidimensional scaling (MDS) and cluster analysis, phytoplankton community was divided into four distinct groups. The first group was consisted of centric diatom species, such as Guinardia spp., Detonula spp., Letocylindrus danicus, Skeletonema costatum, Eucampia zodiacus and Chaetoceros spp.. The second and third clusters comprised mainly diatoms and dinoflagellates, respectively. The other cluster was restricted to the samples collected during the last sampling period when the rainfall and river discharge was frequently recorded. Canonical correspondence analysis (CCA) was applied to analyze four groups respectively, which focused on the effects of nutrients concentration and ratio on phytoplankton variations. Based on CCA analysis, most species of centric diatom were negatively correlated with DSi concentrations and Si/N ratio. Nutrients were strongly limited phytoplankton growth during the summer when the rainfall was not observed, whereas river discharge by rainfall and counterclockwise coastal currents (although the surface circulation pattern is often altered by Kuroshio Current, the counterclockwise coastal currents are generally dominant) has brought phytoplankton population accumulation and triggered the micoalgae growth in western part of the bay. Phosphorous (P) was strongly limited after significantly increases in the phytoplankton abundances. However, silicate (Si) was not a major limiting factor for phytoplankton production, since Si/DIN and Si/P ratio did not create any potential stoichiometric limitation. This indicates that high Si availability contributes favorably to the maintenance of diatom ecosystems in Sagami Bay.

A Bibliometric Approach for Department-Level Disciplinary Analysis and Science Mapping of Research Output Using Multiple Classification Schemes

  • Gautam, Pitambar
    • Journal of Contemporary Eastern Asia
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    • v.18 no.1
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    • pp.7-29
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    • 2019
  • This study describes an approach for comparative bibliometric analysis of scientific publications related to (i) individual or several departments comprising a university, and (ii) broader integrated subject areas using multiple disciplinary schemes. It uses a custom dataset of scientific publications (ca. 15,000 articles and reviews, published during 2009-2013, and recorded in the Web of Science Core Collections) with author affiliations to the research departments, dedicated to science, technology, engineering, mathematics, and medicine (STEMM), of a comprehensive university. The dataset was subjected, at first, to the department level and discipline level analyses using the newly available KAKEN-L3 classification (based on MEXT/JSPS Grants-in-Aid system), hierarchical clustering, correspondence analysis to decipher the major departmental and disciplinary clusters, and visualization of the department-discipline relationships using two-dimensional stacked bar diagrams. The next step involved the creation of subsets covering integrated subject areas and a comparative analysis of departmental contributions to a specific area (medical, health and life science) using several disciplinary schemes: Essential Science Indicators (ESI) 22 research fields, SCOPUS 27 subject areas, OECD Frascati 38 subordinate research fields, and KAKEN-L3 66 subject categories. To illustrate the effective use of the science mapping techniques, the same subset for medical, health and life science area was subjected to network analyses for co-occurrences of keywords, bibliographic coupling of the publication sources, and co-citation of sources in the reference lists. The science mapping approach demonstrates the ways to extract information on the prolific research themes, the most frequently used journals for publishing research findings, and the knowledge base underlying the research activities covered by the publications concerned.

Analysis of Relationship between Functional Areas and Individual Competencies of Extension Workers (농촌지도사의 직무영역과 개별역량의 관계분석)

  • Kim, Hyo Mi;Kim, Ji Hyun;Kim, Sa Gyun;Kim, Yoon Doo
    • Journal of Agricultural Extension & Community Development
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    • v.20 no.2
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    • pp.383-405
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    • 2013
  • The purpose of this study is trying to drive the competence relevant to extension worker's functions. We also conducted a correspondence analysis between the individual competence and extension worker's functions. As a result of the analysis, the functions of guidance planning correlated with 'problem solving' and 'creation of ideas'. Education functions correlated with 'extension work evaluation', 'customer satisfaction' and 'understanding'. And crop technology diffusion functions were analyzed relevant to the ability of 'training skill' and 'responsibility' is high. In this study, extension empowerment need to educate suitable education which is high relation between competency and extension worker's functions and develop new suitable education model. And the baseline data will be made use, when arrange reasonable function to new extension workers, through individual competency measured.

Online Social Capital Analysis on the Yeungnam Local Presses : Website and Social Media (영남지역 언론사의 온라인 사회자본 분석 : 웹사이트와 소셜미디어를 중심으로)

  • Kim, Ji Young;Ha, Young Ji;Park, Han Woo
    • The Journal of the Korea Contents Association
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    • v.13 no.4
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    • pp.73-85
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    • 2013
  • This study examines the online social capital of local press using the website and social media. Moreover, the paper respectively visualizes web feature as Web 1.0 and social feature analysis as Web 2.0 by applying correspondence analysis. For data, the study analyzes 10 representative local press in Yeungnam areas. To collect the data, two coders coded web features from the websites and we employed NodeXL, an open-source software tool, for social media data. The results reveal that local websites expend online social capital using social media account. Especially, the social features of local presses attach importance to Twitter as the main press keep the well-balance use among all platforms.

The Relationship among Brand Equity, Corporate personality, Attachment and Consumer behavior (관광목적지의 브랜드자산, 자아일치성, 애착 및 행동의도간의 관계)

  • Seo, Kyung-Do;Lee, Jung-Eun
    • Journal of Digital Convergence
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    • v.11 no.10
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    • pp.313-320
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    • 2013
  • In this study of tourism destination brand equity and self-consistent interstellar significant attachment relationships and brand equity and behavioral intention was to determine the effect on the relationship. First, the tourism destination brand equity of the self-consistent sex tourists will have a significant impact is to test the hypothesis of a multiple regression analysis was conducted brand equity, loyalty, self image and gender matched only indicates the relationship was significant. Second, self Correspondence tourist destination tourists will have a significant effect on attachment. In order to verify the hypothesis that the multiple regression analysis was conducted for self-Correspondence attachment was significantly related shows. Third, the attachment of tourist destinations for travelers of action also will have a significant impact on. Hypotheses multiple regression analysis was conducted to attachment behavior also shows significant relationship was about.

Implementing an Analysis System for Housing Business Based on Seoul Apartment Price Data (주택 사업 분석 시스템 구축 : 서울지역 아파트 가격 데이터를 중심으로)

  • 김태훈;이희석;김재윤;전진오;이은식
    • The Journal of Information Technology and Database
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    • v.6 no.2
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    • pp.115-130
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    • 1999
  • The price structure of housing market varies depending upon market price policy rather than low or high price policy because of IMF. The object of this study is to develop an analysis system for analyzing housing market and its demand. The analysis system consists of four major categories: macro index analysis, market decision analysis, housing market analysis, and consumer analysis. We model each category by using a variety of techniques such as generalized linear model, categorical analysis, bubble analysis, drill-down analysis, price sensitivity meter analysis, optimum price index analysis, profit index measurement analysis, correspondence analysis, conjoint analysis, and multidimensional scaling analysis. Seoul apartment data is analyzed to demonstrate the practical usefulness of the system.

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Comparison of Sensory Traits and Preferences between Food Co-product Fermented Liquid (FCFL)-fed and Formula-fed Pork Loin

  • Sasaki, Keisuke;Nishioka, Terumi;Ishizuka, Yuzuru;Saeki, Mao;Kawashima, Tomoyuki;Irie, Masakazu;Mitsumoto, Mitsuru
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.8
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    • pp.1272-1277
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    • 2007
  • Sensory traits and preferences regarding food co-product fermented liquid (FCFL)-fed pork loin were compared with those of formula-fed pork. The FCFL-fed pork was expected to have improved fat meltability. Thirty-nine laboratory panelists took part in a sensory test. The fat meat and the lean meat of FCFL-fed pig were judged more meltable and tender, respectively, than the corresponding meat from the formula-fed pig. These sensory traits agreed closely with the results of a mechanical investigation of fat melting patterns and with Warner-Bratzlar shear force values. However, the overall preference was not significantly associated with sensory fat meltability and meat tenderness, as assessed by chi-square and correspondence analyses, but it was significantly related to the whole fat preference and the fat texture preference. The fat texture preference, however, did not correlate with sensory fat meltability. These results indicated that FCFL feeding altered sensory fat meltability in pork loin, but the preference for such meltable fat differed among individual panelists.