• Title/Summary/Keyword: Data inconsistency

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A Study on the Quality Checking for Landcover Map (토지피복도의 품질 검증에 관한 연구)

  • Lee, Yong-Wook
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.26 no.3
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    • pp.303-309
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    • 2008
  • Landcover map can use to establish basic national environment policy as main data predicting living place, counting pollution like a atmosphere, water and forest part. During the 1998-2005 years, Korean government made landcover maps using satellite image for part of south Korea. Landcover maps are offered free for public purpose to university and institute. So, it used basic data for policy and research parts. There are some problems for application parts because of inconsistency. So, in this study, to estimate accuracy of source data by quality checking for landcover maps. As a result, there are some errors like classification inconsistencies. So, it need verification process for landcover maps.

Data Mining-Aided Automatic Landslide Detection Using Airborne Laser Scanning Data in Densely Forested Tropical Areas

  • Mezaal, Mustafa Ridha;Pradhan, Biswajeet
    • Korean Journal of Remote Sensing
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    • v.34 no.1
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    • pp.45-74
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    • 2018
  • Landslide is a natural hazard that threats lives and properties in many areas around the world. Landslides are difficult to recognize, particularly in rainforest regions. Thus, an accurate, detailed, and updated inventory map is required for landslide susceptibility, hazard, and risk analyses. The inconsistency in the results obtained using different features selection techniques in the literature has highlighted the importance of evaluating these techniques. Thus, in this study, six techniques of features selection were evaluated. Very-high-resolution LiDAR point clouds and orthophotos were acquired simultaneously in a rainforest area of Cameron Highlands, Malaysia by airborne laser scanning (LiDAR). A fuzzy-based segmentation parameter (FbSP optimizer) was used to optimize the segmentation parameters. Training samples were evaluated using a stratified random sampling method and set to 70% training samples. Two machine-learning algorithms, namely, Support Vector Machine (SVM) and Random Forest (RF), were used to evaluate the performance of each features selection algorithm. The overall accuracies of the SVM and RF models revealed that three of the six algorithms exhibited higher ranks in landslide detection. Results indicated that the classification accuracies of the RF classifier were higher than the SVM classifier using either all features or only the optimal features. The proposed techniques performed well in detecting the landslides in a rainforest area of Malaysia, and these techniques can be easily extended to similar regions.

A Study on the Underestimation of the Rainfall Data due to Wind (바람에 의한 우량자료의 변동성 연구)

  • Park, Moo-Jong;Kim, Eung-Seok;Kim, Joon-Hoon
    • Journal of Korea Water Resources Association
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    • v.36 no.2
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    • pp.237-249
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    • 2003
  • Wind effects on a rain gauge can cause a significant underestimation of rainfall depths and contribute to the inconsistency in rainfall data. To revise the rainfall data requires the study about calculation of deficiency percentages of rain catch. There are few studies which reflect the variation of wind speed. in this study, the raindrop terminal velocity is quantified according to the particle size of rainfall. The model for calculating deficiency percentages of rain catch according to the particle size of rainfall is examined by experimentation. Experimentation shows that deficiency percentages of rain catch have no relationship with rainfall intensity and affected by raindrop diameter. In conclusion, the estimated deficiency percentages of rain catch coincided with the experimental results and can be used as recommended adjustment factors.

Attitude and Purchase Intent for Luxury Fashion Goods : Cultural Differences between Americans and Chinese

  • Kim, Jung-Hwan;Zhang, Bopeng
    • International Journal of Costume and Fashion
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    • v.15 no.1
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    • pp.19-37
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    • 2015
  • Expanding upon Zhang and Kim's (2013) study involving Chinese consumers, this study investigated key factors that influence U.S. consumers' attitude towards purchasing luxury fashion goods and purchase intent and examined what similarities and differences exist between the two consumer groups in relation to the key factors. A total of 414 respondents completed the online survey questionnaire. Structural Equation Modeling was utilized to analyze data. Brand consciousness, materialism, fashion innovativeness, and fashion involvement were significant factors that affect U.S. consumers' attitude towards luxury fashion goods. Overall, the findings of the current study were greatly inconsistent with Zhang and Kim's Chinese study. The inconsistency provides vital implications to luxury fashion retailers by showing that one size does not fit all and one strategy does not fit all markets.

A Study on the Regulation of Broadcasting Advertising Contents (방송광고내용규제와 개선방안에 대한 연구)

  • Kim Yong-Ho
    • Management & Information Systems Review
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    • v.16
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    • pp.95-115
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    • 2005
  • Although advertising plays an important role of information source for consumer, also advertising affect negative influence to the consumer and social system. Under the such a concept, this study reviewed the social responsibility of advertising and the freedom of expression including the foreign country's advertising regulation system as the theoretical background of advertising regulation. In addition, this study analyzed the case of the advertisement reviews by Korea Advertising Review Board(august 1, 2000, the business concerning prior deliberation of broadcast advertisements was entrusted to the Korea Advertising Review Board, a civilian self-regulatory body, by the Korean Broadcasting Commission) and Fare Trade Commission. As the result of data analysis, some problems of regulation system and codes are suggested and discussed as follows: (1) the high ratio of rejection (2) using the unnecessary foreign language (3) inconsistency application of deliberation standard.

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Object Wrapping as a special middleware of distributed computing in internet environments (인터넷 환경하의 분산 컴퓨팅을 위한 특수미들웨어로서의 객체포장 방법)

  • 강대석;임남홍;조선형
    • Proceedings of the Korea Database Society Conference
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    • 1997.10a
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    • pp.302-318
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    • 1997
  • 인터넷 환경하의 어플리케이션 구축이 확산되면서 기존시스템의 정보 (Legacy sources)를 새롭게 전개되는 분산객체 환경의 시스템에서 접근이 가능하도록 하는 요구가 증대되게 되었으며, 이를 해결하기 위하여 WWW, 분산객체 미들웨어, 특수목적 미들웨어를 사용할 수 가 있다. 본 논문에서는 특수목적 미들웨어로서의 객체포장(Object Wrapping) 방법에 대해서 논한다. 기존시스템의 객체포장은 기존시스템에 대한 깊은 이해 없이 접근을 숨기는 (Information Hiding) 방법이다. 기존시스템의 내용은 데이타와 기능을 포함하며 잘 정의된 인터페이스를 제공하므로써 기존시스템을 이용하려는 어떠한 클라이언트나 타 시스템에서 이용할 수 있도록 해준다. 객체포장은 기존시스템에 대한 깊은 이해 없이도 인터넷상에서 기존시스템의 서비스를 개발위험은 최소로 하면서 서비스의 중복이나 불일치 (Inconsistency)를 회피하며 구현하는 대안이다. 한 번 객체포장이 된 기존시스템은 그 서비스를 필요로 하는 어떠한 종류나 클라이언트의 숫자와 관계없이 클라이언트에 대하여 표준 인터페이스를 제공하는 미들웨어로서 인터페이스 외부의 환경에 대하여 다양한 융통성을 가지게 된다.

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A Case-Based New Financial Product Screening System

  • Lee, Hoon-Young
    • Journal of the Korean Operations Research and Management Science Society
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    • v.19 no.3
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    • pp.151-167
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    • 1994
  • Initial screening is one of the most important and difficult processes in new product development. Many new product screening models have been developed in management and marketing. However practical applications of these models have been limited in part due to their complexity and inflexibility, and in part due to their excessive data requirements. Thus simple judgment models have been popular in practice. However, these models suffer from inaccuracy and inconsistency originating form human cognitive limitations. In light of the problem swith traditional screening methods, we propose a new approach for screening based on managers' past experience and intuitive judgments-screening by analogy, and develop a computerized case-based system for screening new financial service concepts. Using the system, managers can predict the potential performance of a new product concept based on the performance of past products that are similar to it in terms of product characteristics, firm's resources, and market conditions. Based on this prediction, managers make a screening decision.

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A Study on the Evaluation Model of Strategic Information Systems Planning (정보시스템 전략계획 평가모형에 관한 연구)

  • 김동태;문용은;이재범
    • Korean Management Science Review
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    • v.15 no.1
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    • pp.149-178
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    • 1998
  • Strategic Information Systems Planning(SISP) has gained considerable interest among researchers and practitioners in recent years Which has instigated various related research. Neverthless, only 24 percent of the projects recommended as a result of SISP are ultimately performed. This statistics raise the questions for the need of SISP. This study provides the framework that may enable SISP to be more effectively utilized by studying factors for consideration from the review of pertinent literature. These factors will then be validated by case studies of domestic companies and by simultaneously inducing key characteristics and solutions of SISP. The result of the study indicate some inconsistency between literal factors and the case study. The factors added through case study were considered to be actual factors of SISP. This study emphasized the role of the senior manager, the quality of the implementation of the state plan, change management and the capability of the planning team. As a key characteristics of domestic companies considered was the general lack of ability to collect and analyze data. In addition, the domestic companies have little consideration of the organizational contingency factors.

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정보시스템 전략계획 평가에 관한 연구

  • 김동태;문용은;이재범
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1996.10a
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    • pp.245-249
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    • 1996
  • Strategic Information Systems Planning(SISP) has gained considerable interest among researchers and practitioners in recent years which has instigated various related research. Nevertheless, only 24 percent of the projects recommended as a result of SISP are ultimately performed. This statistics raise the questions for the need of SISP. This study provides the framework that may enable SISP to be more effectively utilized by studying factors for consideration from the review of pertinent literature. These factors will then be validated by case studies of domestic companies and by simultaneously inducing key characteristics and solutions of SISP. The result of the study indicates some inconsistency between literal factors and the case study. The factors added through case study were considered to be actual factors of SISP. This study emphasized the role of the senior manager, the quality of the implementation of the state plan and the capability of the planning team. As key characteristics of domestic companies considered were the general lack of ability to collect and analyze data. In addition, the domestic companies have little consideration of the organizational contingency factors.

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Effects of Perceived Parenting Behaviors on Loneliness and Perceived Competence among Female High School Students (여고생이 지각한 부모 양육행동이 외로움과 역량지각에 미치는 영향)

  • Song, Min-Sun;Park, Hui-Hyun
    • Korean Journal of Child Studies
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    • v.33 no.2
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    • pp.37-53
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    • 2012
  • The purpose of this study was to recognize the effects of parenting behaviors as perceived by female high school students on their loneliness and perceived competence. The subjects of this research consisted of 301 female high school students. The data collected were analyzed by multi-regression analysis. The father and mother's behaviors, defined as inconsistency, intrusiveness, physical abuse and neglect, all- resulted in increased levels of loneliness amongst the subjects, and also negatively influenced their perceived competence. However, the parent's monitoring, reasoning and affection behaviors tended to reduced loneliness and perceived lack of competence. The father and mother's affection, when recognized as such by female adolescents, revealed itself to be a positive influence on their various areas of perceived competence. In conclusion, parenting behaviors may affect loneliness and perceived competence on the part of female adolescents during the ego-identity formation stage.