• Title/Summary/Keyword: Comparative Study

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Comparative Study on Tensor and Vector Approaches for 3D-FEM Numerical Simulator

  • Cho, Sang-Young;Yang, Seung-Soo;Yoon, Hyoung-Jin;Won, Tae-Young
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.517-519
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    • 2007
  • We report our study on the implementation of Q tensor approach into three-dimensional finite element method (FEM) numerical solver. The comparative simulation results demonstrated the possibility of a different director configuration in between Q tensor method and vector method. The comparative study confirmed that Q Tensor implementation is more appropriate for OCB analysis than the vector method.

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Application of the Comparative Method from Social Science for Architectural History (건축역사연구(建築歷史硏究)를 위한 비교방법론(比較方法論)의 응용(應用))

  • Kwon, Jong Wook
    • Journal of architectural history
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    • v.4 no.1
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    • pp.141-151
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    • 1995
  • For many social scientists, the comparative method has been a part of the common enterprise of describing, explaining, and developing theories about socio-cultural phenomena. However, it is rare that comparison has been methodologically considered in architectural history in spite of the usefulness for understanding the similarities and differences among architectural styles. This research emphasizes the importance of comparative methodology in architectural history and proposes an example which can be introduced from the comparative method for social studies. The application in this study is based on the assumption that an architectural phenomenon is a kind of social phenomenon and comparative method in social study can be applied to architectural history. The method is to generate and test hypotheses through establishing functional correlation between variables treated as the objective facts that differentiate one type of building from another.

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A Meta-analysis on Comparative Studies of Mathematics Textbooks (수학 교과서 비교 연구 논문에 관한 분석)

  • Hong Mira;Cba Insook
    • The Mathematical Education
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    • v.44 no.2 s.109
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    • pp.201-213
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    • 2005
  • The purpose of this study is to find research areas that were less represented by the researchers of mathematics textbooks and to provide feedback for the research and development of mathematics curriculum and textbooks. In order to complete this study, we analyzed comparative studies of mathematics textbooks published in Korean. This study analyzed 107 comparative studies published until recently based on following aspects: countries studied (North Korea, U.S.A., and Japan), Math curriculum studied (6th and 7th mathematics curriculum), and Math contents studied (probability and statistics) and etc. The result of this study suggests that the content area of creative problem solving was particularly less represented by the studies published and require more concern from the mathematics education researchers

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Human Behavior in Newsvendor Decisions: A Comparative Study with Experimental Results

  • Kwak, Jin Kyung
    • Management Science and Financial Engineering
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    • v.21 no.1
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    • pp.19-24
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    • 2015
  • As decision makers do not make optimal decisions in practice despite the existence of optimal solutions in many models, there has been a rising interest in behavioral operations management recently. In this study, we aim for a comparative study to analyze the inventory decisions in Korea, America, and China, by conducting the same newsvendor experiment in Korea and compare the results with those of previous studies. From the comparative analysis, some national characteristics in decision-making processes have been observed but there is lowly significant difference in order quantities among the three groups. Korean students show lower level of understanding in demand distributions and tendencies of anchoring on the mean demand and being risk-averse. The finding that individuals make their own decisions differently based on their different behaviors suggests that we need to consider individual approach in analyzing human decision-making processes rather than adapting aggregate approach.

A Study on the Unfairness of the Comparative Labelling and Advertising Activities in the Judicial Precedents (부당한 비교표시.광고의 심결사례에 나타난 법리적 특성에 관한 연구)

  • Cho, Jae-Yung
    • Korean journal of communication and information
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    • v.39
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    • pp.428-472
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    • 2007
  • The purpose of this study is to find that how the principles of Fair Labelling and Advertising Act(called 'FLAA' hereinafter) apply to the unfair comparative labelling and advertising activities, as compared with deceptive and misleading, by analyzing the related judicial precedents for 7 years since FLAA enacted, The exact 17 precedents of Fair Trade Commission were analyzed to be judged the unfair comparative labelling and advertising activities, and partly also deceptive, falsified and exaggerated, which include in overlapping 5 comparative counterparts, 11 comparative standards, 7 comparative contents and 4 comparative methods in the unfairness types of comparison. Conclusively, it is needed that the unfairness of comparative labelling and advertising activities should be multiply considered in the concepts of deception, false or exaggeration and slanderousness, to more clearly apply to the facts and to more sufficiently protect consumers from the misleading environments.

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The Influence of Message Types of Comparative Advertising on Advertising Effect (비교광고의 메시지 유형에 따른 광고효과 분석)

  • Moon, Jae-Hak
    • Management & Information Systems Review
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    • v.31 no.4
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    • pp.639-661
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    • 2012
  • The purpose of the paper is to examine sidedness effects of comparative advertising and moderating roles of the emotions of customer and product type. To test the research hypotheses, this study conducted experimental designs. One hundred ninety-two undergraduate students were assigned to one of the four experimental groups. Comparative Advertising message type and product type were manipulated as between-subject factors. There was a surprising event situation(free gift event) when participants came to laboratory for experiment, which is for the emotion manipulation. If a participant in a positive emotion group, he or she gets a free gift. The data demonstrate that comparative message type have a significant effect on both attitude toward the advertising and acceptance intention. In addition, consumers' emotion and product type play a significant moderating role between the message types and the dependent variables. The results of this study contribute to the literature as a new attempt to examine the sidedness effect of the comparative advertising message. We suggested that message types and consumer's emotion is one of very important aspects for a comparative advertising and marketers should consider people's emotion when they release a comparative advertising, which can help when marketers make their strategy for a comparative advertising.

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Xylazole inhibits NO-cGMP pathway in fetal rat nerve cells

  • Wang, Xinyu;Wu, Yue;Liu, Lin;Bai, Hui;Zhang, Zhiheng;Zhao, Mingchao;Ma, Tianwen;Song, Xiaopeng;Jia, Lina;Lv, Liangyu;Yu, Yue;Xu, Xinyu;Chen, Hong;Gao, Li
    • Journal of Veterinary Science
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    • v.23 no.1
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    • pp.16.1-16.13
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    • 2022
  • Background: Xylazole (Xyl) is a veterinary anesthetic that is structurally and functionally similar to xylazine. However, the effects of Xyl in vitro remain unknown. Objectives: This study aimed to investigate the anesthetic mechanism of Xyl using fetal rat nerve cells treated with Xyl. Methods: Fetal rat nerve cells cultured for seven days were treated with 10, 20, 30, and 40 ㎍/ mL Xyl for 0, 5, 10, 15, 20, 25, 30, 45, 60, 90, and 120 min. Variations of amino acid neurotransmitters (AANTs), Nitric oxide-Cyclic GMP (NO-cGMP) signaling pathway, and ATPase were evaluated. Results: Xyl decreased the levels of cGMP and NO in nerve cells. Furthermore, Xyl affected the AANT content and Na+-K+-ATPase and Ca2+-Mg2+-ATPase activity in nerve cells. These findings suggested that Xyl inhibited the NO-cGMP signaling pathway in nerve cells in vitro. Conclusions: This study provided new evidence that the anesthetic and analgesic effects of Xyl are related to the inhibition of the NO-cGMP signaling pathway.

The Influence of Self-Esteem and Self-Efficacy on the Academic Achievement of Elementary School Children in Poverty and Comparative Groups (무상급식 수혜 대상인 빈곤아동의 자아존중감과 자기효능감이 학업성취도에 미치는 영향: 비빈곤아동과의 비교를 중심으로)

  • Park, Si-Hea-Ja;Song, Seung-Min;Lee, Yoo-Hyun
    • The Korean Journal of Community Living Science
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    • v.22 no.3
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    • pp.407-416
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    • 2011
  • The study examined and compared relationships among self-esteem, self-efficacy, and academic achievement of children in poverty and the comparative groups. The subjects of this study were 97 elementary school students who had benefited from the free meal project and 97 students as the comparative group who did not receive the benefit. Descriptive statistics, Cronbach's ${\alpha}$ tests, and multiple regression analysis were employed to analyze the data. The results showed that academic scores of the comparative group were statistically higher than those of children in the poverty group in Korean language, mathematics, science, and sociology. Also, self-esteem of children in the poverty group was lower than that of the comparative group's in terms of leadership and popularity. The poverty group also showed lower self-efficacy in self-regulated efficacy tasks. Finally, multiple regression analysis demonstrated that different sub-factors of self-esteem and self-efficacy predicted the academic achievement of children in poverty group and the comparative groups.

Comparative Advantage of the United States and South Korean Manmade Textile Industries

  • Shin, Eonyou;Keenan, Caitlyn;Karpova, Elena
    • Fashion, Industry and Education
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    • v.14 no.1
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    • pp.1-9
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    • 2016
  • This study examined the comparative advantage of manmade textile (MMT) industries in the United States (US) and South Korea (SK). The Revealed Comparative Advantage (RCA) framework was used to assess the MMT industries' performance in both countries from 2004 to 2013. With the recent ratification of the United States-South Korea Free Trade Agreement (KORUS FTA), it is important to understand the current state of these industries. Using UN Comtrade export data, the RCA index values were calculated and analyzed for 27 MMT commodities, three aggregate groups, and the whole industry. It was found that SK had a consistent comparative advantage for the whole industry. Furthermore, SK had a larger number of products with a comparative advantage. The research findings indicate that the MMT industry in SK is likely to outperform the US following the complete ratification of the KORUS FTA.

Comparative Studies on the Self Voice Assessment of Voice Disorder Patients and the Hearer Voice Assessment of a Comparative Group of normal subjects (음성장애인의 자가음성평가와 정상음성인의 청자음성평가 특성 비교)

  • Lee, Yu-Jin;Hwang, Young-Jin
    • Phonetics and Speech Sciences
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    • v.4 no.2
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    • pp.105-114
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    • 2012
  • This paper will discuss the difference between self assessment of voice disorders and the hearer voice assessment of a comparative group of normal subjects. The study was conducted on 25 voice disorder subjects and 32 hearers of a comparative group of normal subjects. The results are as follows. Firstly, in K-VHI and VHI-H, the hearers of the comparative group of normal subjects perceived more serious voice disorders than the voice disorder group in all sub-domains. Likewise, in K-VQOL and VRQOL-H, the hearers of the comparative group of normal subjects perceived more serious voice disorders than the voice disorder group in all sub-domains. Secondly, the hearer voice assessment of the comparative group of normal subjects showed no difference in gender regarding the perception of the severity of voice disorder issues. Thirdly, the hearer voice assessment of the comparative group of normal subjects states that in the emotional aspects of VHI-H, professional voice users perceive more serious voice disorders than others. Accordingly, in VRQOL-H, there was no difference in use of the voice between professionals and others.