• Title/Summary/Keyword: Data inconsistency

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The effect of mass inconsistency of meteorological data on air quality modeling (기상장의 Mass Inconsistency가 대기오염 수치모의에 미치는 영향에 대한 연구)

  • 이상미;윤순창
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 1999.10a
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    • pp.156-159
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    • 1999
  • 역사적으로 악명 높은 대기오염 사고인 뮤즈 계곡(Meuse valley; 1930년 벨기에), 도노라(Donora; 1948년 미국), 런던(London; 1952년 영국) 등의 사례에서 보듯이 대기오염은 기상 상황과 불가분의 관계를 맺고 있음은 주지의 사실이다. 대기오염 모델링에서도 사용된 기상 자료의 정확도가 대기오염 수치모의의 신뢰도를 좌우한다고 해도 과언이 아닌데, 기상 자료 중 바람장은 대기오염 물질의 이류 및 확산을, 온ㆍ습도장은 광화학 반응을 결정하는 중요한 요소이다.(중략)

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A Study on Clothing Selection Criteria as Related to Status Inconsistency (사회적 지위 불일치 유형에 따른 의복 선택 기준 연구)

  • Cho, In Kyung;Rhee, Eun Young
    • Journal of the Korean Society of Clothing and Textiles
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    • v.17 no.1
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    • pp.11-18
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    • 1993
  • The purposes of this study were to identify the most explainable socioeconomic variables influencing clothing selection criteria, and to explore the difference in the clothing seletion criteria among the groups with status inconsistencies. A questionnaire was developed to collect data for clothing selection criteria, and socioeconomic status. Socioeconomic status was measured by education and occupation of husband and wife, and family income. Status inconsistency was defined by the inconsistencies among education, income and occupation. Data were obtained from 369 housewives living in Seoul area. The results of this study were as follows: 1) The education of housewives was the most important variable influencing clothing selection criteria. 2) When the subjects were divided into three groups according to their status inconsistency group, there were partially significant differneces among groups in clothing selection criteria. The "overprivileged" status group attached more importance to the fashionability and psychological dependence than the other status group. The "underprivileged" status group attached more importance to the practicality and ecnomy than the other status group. And when the subject were divided into three groups according to their social mobility, there were sgnificant differences among groups in clothing selection criteria.

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An empirical evidence of inconsistency of the ℓ1 trend filtering in change point detection (1 추세필터의 변화점 식별에 있어서의 비일치성)

  • Yu, Donghyeon;Lim, Johan;Son, Won
    • The Korean Journal of Applied Statistics
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    • v.35 no.3
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    • pp.371-384
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    • 2022
  • The fused LASSO signal approximator (FLSA) can be applied to find change points from the data having piecewise constant mean structure. It is well-known that the FLSA is inconsistent in change points detection. This inconsistency is due to a total-variation denoising penalty of the FLSA. ℓ1 trend filter, one of the popular tools for finding an underlying trend from data, can be used to identify change points of piecewise linear trends. Since the ℓ1 trend filter applies the sum of absolute values of slope differences, it can be inconsistent for change points recovery as the FLSA. However, there are few studies on the inconsistency of the ℓ1 trend filtering. In this paper, we demonstrate the inconsistency of the ℓ1 trend filtering with a numerical study.

Comprehensive Knowledge Archive Network harvester improvement for efficient open-data collection and management

  • Kim, Dasol;Gil, Myeong-Seon;Nguyen, Minh Chau;Won, Heesun;Moon, Yang-Sae
    • ETRI Journal
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    • v.43 no.5
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    • pp.835-855
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    • 2021
  • With the recent increase in data disclosure, the Comprehensive Knowledge Archive Network (CKAN), which is an open-source data distribution platform, is drawing much attention. CKAN is used together with additional extensions, such as Datastore and Datapusher for data management and Harvest and DCAT for data collection. This study derives the problems of CKAN itself and Harvest Extension. First, CKAN causes two problems of data inconsistency and storage space waste for data deletion. Second, Harvest Extension causes three additional problems, namely source deletion that deletes only sources without deleting data themselves, job stop that cannot delete job during data collection, and service interruption that cannot provide service, even if data exist. Based on these observations, we propose herein an improved CKAN that provides a new deletion function solving data inconsistency and storage space waste problems. In addition, we present an improved Harvest Extension solving three problems of the legacy Harvest Extension. We verify the correctness and the usefulness of the improved CKAN and Harvest Extension functions through actual implementation and extensive experiments.

Registry Metadata Quality Assessment by the Example of re3data.org Schema

  • Kim, Suntae;Choi, Myung-Seok
    • International Journal of Knowledge Content Development & Technology
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    • v.7 no.2
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    • pp.41-51
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    • 2017
  • Nowadays, research data repositories (RDR) have become progressively widespread all over the world. To expand repository services and build up inbound linking strategy, organizations list their repositories with so called Global Registries. Accordingly, such registries should be carefully described by the related data. In this study, I explore the metadata schema of re3data.org. I collect and analyze descriptions from the listed repositories, and come up with some suggestions concerning possible improvements to the metadata schema. To accomplish this, I develop a crawler program, which collects necessary data from the re3data.org. Based on the analysis results, I have identified two issues that required elements is missing, one issue that required element value is missing when the corresponding property is applied, five inconsistency issues with re3data controlled vocabulary, six issues with undescribed optional elements, and two inconsistency issues between the elements and their attributes which do not pair with. I believe this discussion can facilitate improvements to the existing re3data.org schema and further help researchers who analyze data repository trends.

Evaluation of Geometric Modeling for KOMPSAT-1 EOC Imagery Using Ephemeris Data

  • Sohn, Hong-Gyoo;Yoo, Hwan-Hee;Kim, Seong-Sam
    • ETRI Journal
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    • v.26 no.3
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    • pp.218-228
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    • 2004
  • Using stereo images with ephemeris data from the Korea Multi-Purpose Satellite-1 electro-optical camera (KOMPSAT-1 EOC), we performed geometric modeling for three-dimensional (3-D) positioning and evaluated its accuracy. In the geometric modeling procedures, we used ephemeris data included in the image header file to calculate the orbital parameters, sensor attitudes, and satellite position. An inconsistency between the time information of the ephemeris data and that of the center of the image frame was found, which caused a significant offset in satellite position. This time inconsistency was successfully adjusted. We modeled the actual satellite positions of the left and right images using only two ground control points and then achieved 3-D positioning using the KOMPSAT-1 EOC stereo images. The results show that the positioning accuracy was about 12-17 m root mean square error (RMSE) when 6.6 m resolution EOC stereo images were used along with the ephemeris data and only two ground control points (GCPs). If more accurate ephemeris data are provided in the near future, then a more accurate 3-D positioning will also be realized using only the EOC stereo images with ephemeris data and without the need for any GCPs.

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Types of Students' Responses to Anomalous Data (변칙 사례에 대한 학생들의 반응 유형)

  • Noh, Tae-Hee;Lim, Hee-Yeon;Kang, Suk-Jin
    • Journal of The Korean Association For Science Education
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    • v.20 no.2
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    • pp.288-296
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    • 2000
  • In this study, the types and the characteristics of students' responses to anomalous data were investigated. The criteria for classifying students' responses were 'acceptance of validity of anomalous data', 'acceptance of inconsistency between anomalous data and initial theory', and 'change of belief in initial theory'. Seven types of responses were identified as follows: Rejection, reinterpretation, exclusion, uncertainty, peripheral theory change, partial belief change, and theory change. Absolute belief in the intial theory and doubts about methodological accuracy were found to be the major reasons for rejecting anomalous data. The students did not accept the inconsistency between anomalous data and initial theory because they ignored the experimental procedures and focused on the similarity of the experimental results.

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A Study of the Relationship between the Status Symbol of Clothing and Social-Psychological Variables (의복의 신분상징성과 사회심리학적 변인과의 상관연구 -서울의 가정주부를 중심으로-)

  • Lee Keum Sil;Kahng He Won
    • Journal of the Korean Society of Clothing and Textiles
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    • v.2 no.2
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    • pp.287-294
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    • 1978
  • The purpose of this study was to investigate the relationship between clothing interests in the status symbol and the exhibition need and status inconsistency. The exhibition need was measured by Murray's statements on need and some items selected from The Need Diagnosis Scale of Jaung-Kyu Whang. Status inconsistency was measured by the same criteria of Lenski. Three aspects of clothing interests-the status symbol, the fashion and the exhibitionism-were assessed. The questionnaires were distributed to the housewives in Seoul. Data from 511 respondents were analyzed by correlations and $x^2$-tests. The results were: 1) The exhibition need was positively related to interests in the status symbol and exhibitionism of clothing. 2) Status inconsistency was positively related to clothing interests in the status symbol and fashion. 3) The degree of clothing interests in the status symbol and fashion were also positively related to the clothing expenditure and the socioeconomic status of the sample.

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The Effects of Status Inconsistency between Spouses on Migration in the United States: Propensities and Rural-Urban Destination Selections (미국에서 이동시 부분간 지위불일치의 효과 : 경향과 농촌-도시 목적지 선택을 중심으로)

  • Lee Ji-Youn;Toney Michael B.;Berry Helen E.
    • Korea journal of population studies
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    • v.26 no.2
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    • pp.197-219
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    • 2003
  • Using the panel data from the National Longitudinal Survey of Youth 79, we test the effects of relative status inconsistency within American young couples on the direction of migration as well as on migration propensities. Key findings in this study indicate that only couples in which the wife's education is greater than the husband's education are less likely to migrate than couples for which the wife's status is as lower than the husband's. There are no differences in the propensity for rural couples to migrate to urban counties or for urban couples to migrate to rural counties based on status inconsistency between spouses. However, we find that there is the gendered difference in the effect of status inconsistency on the probability of family migration. A spouse's higher status has an impact on a wife's probability of migration but does not affect a husband's migration propensity in a comparable situation. These findings are most consistent with a gender role perspective on migration since increases in the wife's status have little effect on family migration, once the presence and age of children is controlled.

Effects of Uncertainty and Depression on the Quality of Life of Elderly People (노인의 불확실성과 우울이 삶의 질에 미치는 영향)

  • Kim, Hyun-Seung;Cho, Sung-Hyoun
    • Journal of The Korean Society of Integrative Medicine
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    • v.10 no.3
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    • pp.209-219
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    • 2022
  • Purpose : The purpose of this study was two-fold: to investigate the effects of uncertainty and depression on the quality of life (QoL) of elderly people with chronic diseases and to provide basic data on the physical, emotional, and psychological factors affecting their QoL in the field of physical therapy. Methods : A questionnaire covering uncertainty, depression, and QoL was distributed among 320 elderly people. Pearson's correlation analysis was performed to examine the correlation between uncertainty (ambiguity, complexity, inconsistency, and unpredictability), depression, and QoL (physical, psychological, social, and living environment domains) of the respondents; furthermore, multiple regression analysis was performed to identify the factors affecting the QoL of the respondents with a chronic disease. Results : The sub-factors of uncertainty and QoL-"complexity and social domain" (r=-.295, p<.001), "complexity and living environment domain" (r=-.302, p<.001), and "inconsistency and living environment domain" (r=-.360, p<.001)-showed a negative (-) correlation, as did depression and the sub-factors of QoL-"depression and physical domain" (r=-.782, p<.001), "depression and psychological domain" (r=-.876, p<.001), "depression and social domain" (r=-.668, p<.001), and "depression and living environment domain" (r=-.731, p<.001). The factors affecting QoL were complexity (𝛽=-.122, p<.001), inconsistency (𝛽=-.102, p=.002), unpredictability (𝛽=.112, p<.001), and depression (𝛽=-.850, p<.001). The relative influence of the independent variables was in the order of depression, complexity, unpredictability, and inconsistency, and the explanatory power was 77.1 % (F=215.853, p<.001). Conclusion : It is important to help the elderly with chronic diseases reduce the negative impact on their quality of life by helping them gain support from their families and medical professionals and by increasing their understanding through communication so that they can transition from negative emotions to positive emotions of opportunity.