• Title/Summary/Keyword: research hypothesis

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A New Approach to Double Dividend Hypothesis of Environmental Taxes: Focused on the Effects of the Labor Market (환경세 정책의 이중배당가설에 대한 새로운 접근: 노동시장의 변화를 중심으로)

  • Kim, Sang Kyum
    • Journal of Environmental Policy
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    • v.10 no.3
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    • pp.93-117
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    • 2011
  • The double dividend hypothesis of environmental taxes has been a very widely debated research topic since its introduction in the mid-80s. Unlike the second generation studies, which stated that the double dividend environmental taxes were impossible to realize, the third generation researchers of today are focused on assumptions or conditions that make the hypothesis viable. The third generation studies state that the double dividend hypothesis is possible through functional form assumptions, such as the characteristics of taxes levied on polluting goods and the overall tax efficiency of the initial tax systems. The most notable, however, is the fact that the working mechanisms of third generation studies, upon closer inspection, give homogeneous effect on the labor markets, although at first glance the third generation studies take seemingly unrelated approaches. This thesis stems from such idea, and it attempts to analyze the effects of environmental taxes on the labor market. After a thorough analysis, the results match the intuition, as the viability of the double dividend hypothesis of environmental taxes largely depends on the effects that policy changes generate on the labor market. In order for the hypothesis to be plausible, environmental tax policies have to increase the labor supply.

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Cognitive Individual Differences and L2 Learners' Processing of Korean Subject-Object Relative Clauses (인지능력의 개별차와 한국어 학습자의 주격-목적격 관계절 프로세싱)

  • Goo, Jaemyung
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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    • v.8 no.6
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    • pp.493-503
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    • 2018
  • The present study is a conceptual replication of O'Grady, Lee, and Choo's (2003) earlier study designed to investigate two hypotheses (linear distance hypothesis vs. structural distance hypothesis) in relation to L2 Korean learners' processing of Korean subject and object relative clauses (RCs) in a scholarly attempt to explicate Keenan and Comrie's (1977) Noun Phrase Accessibility Hierarchy (NPAH). In addition, the current study is intended to explore any potential role of working memory capacity (WMC) in the processing of Korean subject and/or object RCs. Chinese-speaking learners of Korean taking a language course offered at a local university in Korea participated in this experimental study. Among those recruited, only 23 learners completed the experimental tasks appropriately according to the specific instructions provided on each task, and thus, subsequent statistical analyses were conducted on their data. Fifteen Korean NSs were also recruited for the control group. Two experimental tasks were administerd to the participants: one picture selection task containing the same test items used in O'Grady et al.'s study to measure their processing of subject-object RCs and an operation span (OSPAN) task to measure their WMC. Somewhat differently from O'Grady et al.'s findings, the participating Chinese learners of Korean performed significantly better on object RCs than on subject RCs, seemingly lending support to the linear distance hypothesis. Further analyses, however, suggested that the results in favor of, or relative ease of processing, object relative clauses were due, most likely, to the learners' excessive use of the canonical sentence strategy, which also led to nonsignificant correlations between WMC and learner performance on the picture selection task.

P56 LCK Inhibitor Identification by Pharmacophore Modelling and Molecular Docking

  • Bharatham, Nagakumar;Bharatham, Kavitha;Lee, Keun-Woo
    • Bulletin of the Korean Chemical Society
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    • v.28 no.2
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    • pp.200-206
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    • 2007
  • Pharmacophore models for lymphocyte-specific protein tyrosine kinase (P56 LCK) were developed using CATALYST HypoGen with a training set comprising of 25 different P56 LCK inhibitors. The best quantitative pharmacophore hypothesis comprises of one hydrogen bond acceptor, one hydrogen bond donor, one hydrophobic aliphatic and one ring aromatic features with correlation coefficient of 0.941, root mean square deviation (RMSD) of 0.933 and cost difference (null cost-total cost) of 66.23. The pharmacophore model was validated by two methods and the validated model was further used to search databases for new compounds with good estimated LCK inhibitory activity. These compounds were evaluated for their binding properties at the active site by molecular docking studies using GOLD software. The compounds with good estimated activity and docking scores were evaluated for physiological properties based on Lipinski's rules. Finally 68 compounds satisfied all the properties required to be a successful inhibitor candidate.

Perspectives on a Critical Period for Language Acquisition: Implications for language research and practice

  • Lim, Ja-Yeon
    • Lingua Humanitatis
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    • v.7
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    • pp.335-353
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    • 2005
  • In recent years there has been much discussion about whether there is a critical, or sensitive period for language acquisition. Research on a critical period provides an excellent example around which we can organize a discussion of the behavioral and neural evidence. In this paper, the early history of critical periods and evidence for the existence of critical periods in various domains of human cognition and learning are reviewed. Followed by this overview, evidence for a critical period in both linguistic and non linguistic area are presented. The paper then provides some unresolved questions regarding a critical period in language acquisition and states what the outcome of this issues mean for an understanding of language acquisition. Finally the paper concludes with some educational implications of a critical period for practice.

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Study on Maritime Cultural Archetypes of 'Jasan-Urbo' for Convergent Contents Development (융합콘텐츠개발을 위한 『자산어보』 해양문화원형 연구)

  • Kim, Sang-Nam;Lee, Young-Suk
    • Journal of Korea Multimedia Society
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    • v.23 no.3
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    • pp.490-498
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    • 2020
  • This study researched the elements about seafood culture among the archetypes of 『Jasan Urbo』. We built a hypothesis on 100 species of fish presented in 『Jasan Urbo』 to extract archetypes from them. To prove this hypothesis, we analyzed the properties of archetypes according to recipes. Next, we grasped the food preferences of past ages by inspecting 'taste' words of the literature. Finally, we examined the relations between dominant features of cuisine and fish preferences. We have found four attributes of maritime cultural archetypes. Our research has limitations since we could not had accounted the whole fish species of 『Jasan Urbo』. However, we achieved the huge outcome by our research, in which we applied various extraction methods of archetypes and acquired the dominance of maritime cultural archetypes and preferences.

A Study on the dimensional model of the meridian system (경락시스템의 층차적 모형에 관한 고찰)

  • Choi, Hwan-soo
    • Journal of Acupuncture Research
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    • v.20 no.2
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    • pp.1-10
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    • 2003
  • Objective : It is limited to verify existence and a part of characteristic of MS(Meridian system) in modern MS hypothesis. Because it is that an object of scientific approach is to prove a structure of MS. Then according to DMMS, we will research on a subject of MSs rules. This is a paper on the investigation of DMMS in aspects of propriety and supplement. Results : DMMS is composed of organizational anatomy system, MS, signal system. This means that the contents of classic MS theory divide into three dimensions. It includes classic MS theory and explains modern MS hypothesis with DMMS. But is has two problems that one is the difference between the right side and the left in the same meridian and the other is a lack of dynamic idea(動態觀念). After apply this ti analysis system, it will be reasonable to DMMS. It indicates to use various ways of a science, especially, mathematics, system theory, information theory, control theory to supplement the DMMS. Conclusions : Although the scientific study of MS is stagnant, the approach of this DMMS will provide us with a new result of MS.

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A Study on the Effect of Brand Value Through Residential Satisfaction for CRM of Home Builders (주택건설업체의 CRM에 의한 주거만족도가 브랜드가치에 미치는 영향)

  • Jung, Suk Hwang;Chang, Seog Ju
    • Journal of Korean Society for Quality Management
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    • v.44 no.2
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    • pp.425-450
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    • 2016
  • Purpose: This study can provide a strategic advantage for the marketing information of CRM of apartment provider microscopically. It is also expected to contribute to policy for public housing supply in the macro. Methods: This study is contained theoretical research on CRM & Residential Satisfaction & the brand of Apartments with the search for prior literature. Establish a research model to derive a hypothesis. It performs measurements aimed at an apartment tenant. After the test the hypothesis proposes a conclusion. Results: CRM activity of the housing construction companies is confirmed that a significant positive influence on residential satisfaction and brand value. Conclusion: Housing construction companies through improved residential satisfaction have on the growth strategy that takes the brand value in regardless of environmental factors. it is necessary to focus on CRM activities.

A Study of the Attitude and Preference on Comsumer of Food and Beverage Industry (외식산업의 이용 고객 태도와 선호도에 관한 연구)

  • Ha, Jong-Myeong;Lee, Ji-Yeong
    • Journal of Applied Tourism Food and Beverage Management and Research
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    • v.17 no.1
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    • pp.125-138
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    • 2006
  • The purpose of this study are to find out various the significant factors impinging on the attitude of consumer, between attitude of consumer and preference of consumer in the Food and Beverage industry. For these purposes, two hypothesis were established as follows : (1) The reactions of consumer should have a significant effect on the attitude of consumer in the Food and Beverage industry. (2) The attitude of consumer should have a significant effect on the preference of consumer in the Food and Beverage industry. The verification of the proposed hypothesis showed the following results : First, it was found that the consumer's recognition reaction of employees have significant on price and variety of menu. Second, it was found that the consumer's emotion reaction have significant on feeling, taste of food and so on. Third, it was found that the consumer's action reaction have significant on expense.

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Corporate Takeover and Agency Cost of Free Cash Flow (기업인수와 과잉현금흐름으로 인한 대리인비용과의 관계)

  • 김주현
    • Journal of the Korean Operations Research and Management Science Society
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    • v.15 no.2
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    • pp.45-61
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    • 1990
  • This study examines shareholder wealth effects in tender offers and attempts to explain abnormal return variations of bidding and target firms at announcement of takeovers using the free cash flow hypothesis of Jensen. On average, bidders with large free cash flows pay higher premia (apparently more than fair market value) to targets than do other bidders with no free cash flows. Thereby, these bidders experience negative wealth effects on announcement of tender offers. Cross-sectional regression analysis suggests that for the subsample of takeover bids where bidders have large free cash flows, the increase in the debt ratio resulting from takeover has a significant positive wealth effect for bidding firm shareholders, while it has no effect in other subsamples. The evidence is consistent with the free cash flow hypothesis.

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Immune Disorders and Its Correlation with Gut Microbiome

  • Hwang, Ji-Sun;Im, Chang-Rok;Im, Sin-Hyeog
    • IMMUNE NETWORK
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    • v.12 no.4
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    • pp.129-138
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    • 2012
  • Allergic disorders such as atopic dermatitis and asthma are common hyper-immune disorders in industrialized countries. Along with genetic association, environmental factors and gut microbiota have been suggested as major triggering factors for the development of atopic dermatitis. Numerous studies support the association of hygiene hypothesis in allergic immune disorders that a lack of early childhood exposure to diverse microorganism increases susceptibility to allergic diseases. Among the symbiotic microorganisms (e.g. gut flora or probiotics), probiotics confer health benefits through multiple action mechanisms including modification of immune response in gut associated lymphoid tissue (GALT). Although many human clinical trials and mouse studies demonstrated the beneficial effects of probiotics in diverse immune disorders, this effect is strain specific and needs to apply specific probiotics for specific allergic diseases. Herein, we briefly review the diverse functions and regulation mechanisms of probiotics in diverse disorders.