• Title/Summary/Keyword: The Comparative Analysis

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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.

Equivalence between Increasing Returns and Comparative Advantage as the Determinants of Intra-industry Trade: An Industry Analysis for Korea

  • Lee, Honggue
    • East Asian Economic Review
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    • v.22 no.1
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    • pp.75-114
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    • 2018
  • A two-part model is estimated to see if increasing returns and comparative advantage are empirically equivalent in explaining intra-industry trade. The model has separate mechanisms for determining the occurrence and the extent of intra-industry trade. Estimation is based on an augmented Grubel-Lloyd index derived from the data set on SITC 7 goods at the 3-digit SITC (Revision 4) for country pairs in which Korea is fixed as a source country. Estimation results show that both increasing returns and comparative advantage can explain the occurrence and the extent of intra-industry trade.

A Comparative Analysis of EU GDPR with Privacy Laws in South Korea (EU GDPR과 국내 개인정보보호 법제 비교분석)

  • Kim, Sung Hyun;Lee, Chang Moo
    • Convergence Security Journal
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    • v.18 no.5_1
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    • pp.83-92
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    • 2018
  • The GDPR implemented since 25 May 2018 is common to all EU Member States and is legally binding. It is also important and legally valuable in that it takes into account the latest trends related to privacy protection. The purpose of this study is to propose a comprehensive review and improvement direction of the personal information protection laws in South Korea through a comparative analysis of EU GDPR and privacy related laws in South Korea. As a result of this study, the differences between the GDPR and privacy related laws in South Korea are Definition of personal sensitive information, Right to data portability, Data protection officer, Transfers of personal data to third countries, Supervisory authority, and Punishment, etc. The differences in these regulations were necessary to protect the rights and interests of data subjects and to properly handle personal information of personal information controllers. Therefore, based on the results of the comparative analysis of this study and suggestions on improvement direction of the law related to personal information protection, it is expected that it will contribute to the overall inspection and improvement of the law related to personal information protection in South Korea.

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A Comparative Analysis on Curriculum of iSchools and L-School in North America (북미지역 iSchool 대학과 L-School의 교육과정 비교분석)

  • Kim, Heesop;Nam, Kwon Hee;Kang, Bora
    • Journal of the Korean Society for Library and Information Science
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    • v.47 no.4
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    • pp.295-314
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    • 2013
  • The purpose of this study is to analyze the curriculum of iSchools in North America. To achieve the aim of the study 17 iSchools and the same number of L-Schools were chosen from the same regional area. Data were collected mainly through each of their official websites and email inquiry. The graduate courses were classified into 8 domains judging by its title, and conducted t-test for a comparative analysis with L-School curriculum using SPSS 19.0. It is found that 'Information Studies', 'Practicum and Study', and 'Library and Information Center Management' domains were dominant in iSchool curriculum. In the comparative analysis, 'Study in Library and Information Science' domain showed lower percentage, whereas 'Information Studies', 'Library and Information Center Management', 'Practicum and Study' domains showed higher percentage than the L-School curriculum.

Comparative Analysis of Energy Performance using Dynamic Simulation (동적 시뮬레이션을 이용한 건물 에너지 성능 비교분석)

  • Bae, Sangmu;Lee, Kyung-Hee;Yeo, Seong-Gu;Kim, Eunji;Yang, Jae-Kwang;Jeon, Jae-Young;Lee, Joonhyuk;Bae, Yeongmin;Kim, Sung-Hoon;Kang, Youngmo
    • Journal of Power System Engineering
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    • v.21 no.6
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    • pp.62-67
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    • 2017
  • In order to achieve high efficiency of energy use and environment-friendly architectural design, various loads such as cooling, heating and hot water required by the building sector must be accurately predicted. Many studies used dynamic simulation tool to evaluate and analyze building energy performance. However, there are few studies on the comparative analysis of load results by each simulation and the evaluation of simulation characteristics and functions. In this study, the cooling, heating loads and energy demand of the buildings were evaluated using three dynamic simulations for the building with the same input conditions, and the characteristics of each simulation were compared and analyzed through the results. As a result of simulation comparative analysis, cooling, heating load and energy demand was lowest in square type and north-south direction conditions.

Image Analysis Algorithms for Comparative Genomic Hybridization (분자 세포 유전학 기법에 응용되는 영상 처리 기술)

  • Kim, De-Sok;Yoo, Jin-Sung;Lee, Jin-Woo;Kim, Jong-Won;Moon, Shin-Yong;Choi, Young-Min
    • Proceedings of the KOSOMBE Conference
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    • v.1998 no.11
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    • pp.66-69
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    • 1998
  • Comparative genomic hybridization (CGH) is an important molecular cytogenetics technique that maps abnormal copy number of specific DNA sequence of the chromosome. CGH is based on quantitative digital image analysis of ratio images from fluorescently labeled chromosomes. In this paper, we would like to introduce how recently developed image analysis algorithms are used for CGH techniques. To average the ratio profile of each chromosome, binarization, skeletonization, and stretching of chromosome images have been studied. Developed algorithms have been implemented in the karyotyping system ChIPS commercially developed at Biomedlab Co. Ltd.

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A Comparative Analysis of the Competitiveness of the Distribution Ship Industries of Japan and China (일본과 중국의 유통선박산업의 경쟁력비교분석)

  • Lee, Jae-Sung
    • Journal of Distribution Science
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    • v.11 no.8
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    • pp.31-37
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    • 2013
  • Purpose - This study aims to strengthen the economic cooperation between Korea and Japan by studying the pattern of trade between them and identifying drawbacks. Thus, it aims to enable trade expansion by analyzing the factors that affect trade and identifying ways to improve them. If economic cooperation is improved, transport and communication costs, as well as the transaction cost of economic exchanges, can be minimized. Research design, data, methodology - The trade intensity index developed by the Japanese economist Yamazawa under his trade intensity theory was used to analyze the trade decision factor of Korea and Japan. Trade structure and decision factors were analyzed for the target period of 2000 to 2012, and the period ranging from 2000 to 2005 was compared with the period ranging from 2005 to 2012. This paper is an analysis of the resultant time series. The data were collected from Korea Traders Association, Korea Customs Office, and UN Comtrade (2000, 2005, 2012) and whole table indexes were calculated by the author. Trade related index was used to analyze the comparative advantage based on time-series analysis statistics data (2000. 2005, 2012) through an analysis of the trade intensity index (TII), revealed comparative advantage index (RCA), and trade specialization index (TSI). Results - The trade intensity index of the industries of Japan and Korea is 1.814 in 2000. The export ratio of Japan against China was slightly higher at 2.128. TII is indicated to be 1.600 in both 2005 and 2012, which means export ratio of Japan against China is considerably maintained in 2005; however, export ratio of Japan against China is diminishing gradually as its index is 1.600 in 2012. Second, as per the trade specialization index of the ship industry in Japan and China, TSI is indicated to be -0.818 in 2000, -0.308 in 2005, and -0.847 in 2012. Generally, it is still closer to -1 and especially, we can see it is more closer to -1 in 2012. Third, as per the revealed comparative advantage index of the ship industry in Japan and China, the RCA index in 2012 is 0.007, which is quite far from 1 as compared to the value in 2000 and 2005. Hence, the Japanese ship industry has a significant comparative disadvantage against the Chinese ship industry. Conclusions - Both countries invest most of their capital in the shipping industry. It is the shipping industry that receives the most capital investment in the two countries is invested and governmental policy funds are needed. As both countries have large shipping industries, this research project is very valuable. Japan and China are compared because they are Korea's neighbors. Also, Korea is strategically located in Northeast Asia and has a history of foreign intrusion from several countries. Therefore, the purpose of this research study is to understand the trade structures of both countries and intensify the economic cooperation between Japan and China.

A Comparative analysis of the Pre- and Post-Construction Image Analysis of the Nakdong Estuary as Coastal Tourism Resource

  • Yhang Wii-Joo;Cho Yoon-Shik
    • Journal of Environmental Science International
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    • v.14 no.10
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    • pp.905-910
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    • 2005
  • The purpose of this study is the comparative analysis of Susan citizens' images of Eulsook-do as a coastal tourism destination before and after the construction of a road bridge across the Nakdong estuary in order to analyze local people's changes in leisure patterns. Analysis of the images of a pre-construction Eulsook-do that people aged both 40 and less and 50 and more had on five dimensions showed values higher than zero(0) that suggests neutral image, while their images of a post-construction Eulsook-do showed the shrinking size of pentagon on all five dimensions: ET(Entertainment), CA(Culture & Art), EE(Environment & Ecology), RC(Recreation) and LP(Leports) dimensions. Its pre- and post- construction image analysis conducted 20 years after it came to be built finds that the road bridge construction has led to the ecological, environmental disruption of the coast and the lower Nakdong river, having negative influence on the images of Eulsook-so.

Comparative Study on Numerical Analysis Methods on the 2D Ground Effect (2차원 지면효과에 대한 수치해석 기법 비교 연구)

  • Kim, Yoon-Sik;Shin, Myung-Soo;Cho, Yong-Jin
    • Journal of Ocean Engineering and Technology
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    • v.21 no.3 s.76
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    • pp.16-25
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    • 2007
  • A comparative study on the turbulent flaw simulation and the potential flaw analysis has been performed. A law Mach number preconditioned Navier-Stokes solver, using the multi-block grid method and a panel method based on the velocity potential, have been developed and validated by comparison to the experimental data. The present numerical analysis methods are applied to the ground effect problem around the NACA 4412 airfoil. It has been confirmed that the potential flaw analysis on the ground effect, using the image method, is consistent, to some degree, with the viscous calculations for high Reynolds number flows.

A Comparative Analysis on the Current Housing Unit Plans of Korea and China (${\cdot}$중 현대 집합주거 단위평면 비교연구)

  • Jung Byung-Moon;Kim Hyeon-Ji;Lee Sang-Hong
    • Journal of the Korean housing association
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    • v.16 no.6
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    • pp.65-72
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    • 2005
  • The purpose of this study is to get preeminent data from comparative analysis of multi-family housing unit plans between Korea and China nowadays. Even though Korea and China belong to common cultured band in Asia, there are many different Housing aspects and unit plans. Through this study we want to grasp the characteristics of both nation's apartment unit plans and to contribute for advance into the China apartment market. Analysis target is constructing and lotting out apartment at South Korea and China in 2004, and the space syntax model is used as an analysis tool. First, analyze kind, number and special quality of each room by use area, and second, analyze area and scale of the rooms. Through the integration analysis we know the grade of rank and centrality of each rooms, and search difference of South Korean and Chinese apartment.