• 제목/요약/키워드: research hypothesis

검색결과 2,857건 처리시간 0.026초

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

  • 김상겸
    • 환경정책연구
    • /
    • 제10권3호
    • /
    • pp.93-117
    • /
    • 2011
  • 환경세의 이중배당가설은 1980년대 중반 처음 제기된 이래, 최근까지 그 실현가능성에 대한 논의가 매우 활발한 연구주제이다. 이중배당가설의 실현가능성에 대해 부정적 입장을 견지하였던 2세대 연구들과는 달리, 3세대 연구들은 가설이 실현될 수 있는 조건에 초점을 맞추어 왔다. 3세대 연구들은 함수적 가정이나 환경세 부과대상 재화의 성질, 그리고 초기 조세체계에 대한 가정 등 다양한 경로를 통해 이중배당이 가능함을 주장하고 있다. 하지만 한 가지 흥미로운 점은, 3세대 연구들은 외형적으로 전혀 다른 접근방법을 취하고 있는 것으로 보이지만 그 작동기제를 살펴보면 노동시장에 유사한 영향을 미친다는 점에서 공통점이 발견된다는 것이다. 본 논문은 이러한 점에 착안하여 수행되었으며, 환경세 정책이 노동시장에 미치는 영향에 논의의 초점을 맞추고 이론적, 수리적 분석을 시도하였다. 분석결과는 이와 같은 이론적 직관과 일치하는 것으로 나타났다. 즉, 이중배당가설의 성립 여부는 정책변화가 노동시장에 미치는 영향이 매우 중요하며, 특히 가설이 성립하기 위해서는 환경세 정책이 노동공급의 증가를 유발해야 한다는 것이다.

  • PDF

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

  • 구재명
    • 예술인문사회 융합 멀티미디어 논문지
    • /
    • 제8권6호
    • /
    • pp.493-503
    • /
    • 2018
  • 본 연구는, 한국어 학습자들의 주격과 목적격 관계절 프로세싱과 관련한 두 가지 가설인 선형거리가설(Linear distance hypothesis)과 구조거리가설(Structural distance hypothesis)을 통해 Keenan과 Comrie(1977)의 명사구 접근 위계(Noun Phrase Accessibility Hierarchy)를 검증한 O'Grady, Lee, 그리고 Choo의 2003년 연구를 바탕으로 설계된 conceptual replication 연구이다. 본 실험에서는 한국에서 공부하는 중국어 모어 학습자들을 대상으로 두 가설을 테스트 하였다. 더불어, 두 가설과 관련, 인지적인 능력(작동기억)의 개별차가 어떤 역할을 하는지에 대해서도 추가적으로 조사하였다. 실험 당시 지방의 모 대학 소재 한국어학당에서 공부하는 중국어 모어 학습자들이 실험집단으로 참여하였다. 각각의 실험 활동을 올바르게 인지하고 참여한 23명의 학습자 데이터에 한하여 통계 분석이 이루어졌다. 통제집단으로는 한국어 모어 대학생 15명이 참여하였다. 참가자들은 두 가지 실험 활동을 수행하였다: O'Grady외의 연구에서 사용된 동일한 관계절들이 포함된 그림 선택 활동과 작동기억 측정을 위해 디자인된 활동(Operation Span Task). 본 실험의 결과는 O'Grady외의 연구 결과와 다소 차이를 보였다. 즉, 주격보다는 목적격 관계절에 대한 학생들의 이해도가 상대적으로 현저하게 높게 나타났다. 세부적인 분석에 따르면, 이는 선형거리가설에 따른 현상이라기보다는, 상용절 전략을 사용한 프로세싱 결과로 해석하는 것이 더 적절해 보인다. 작동기억의 개별차와 관계절 프로세싱이 유의미한 상관관계가 없는 것으로 나타난 것도 이러한 과도한 상용절 전략의 결과로 볼 수 있다.

P56 LCK Inhibitor Identification by Pharmacophore Modelling and Molecular Docking

  • Bharatham, Nagakumar;Bharatham, Kavitha;Lee, Keun-Woo
    • Bulletin of the Korean Chemical Society
    • /
    • 제28권2호
    • /
    • pp.200-206
    • /
    • 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
    • 인문언어
    • /
    • 제7집
    • /
    • pp.335-353
    • /
    • 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.

  • PDF

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

  • 김상남;이영숙
    • 한국멀티미디어학회논문지
    • /
    • 제23권3호
    • /
    • pp.490-498
    • /
    • 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.

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

  • 최환수
    • Journal of Acupuncture Research
    • /
    • 제20권2호
    • /
    • pp.1-10
    • /
    • 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.

  • PDF

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

  • 정석황;장석주
    • 품질경영학회지
    • /
    • 제44권2호
    • /
    • pp.425-450
    • /
    • 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.

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

  • 하종명;이지영
    • 한국관광식음료학회지:관광식음료경영연구
    • /
    • 제17권1호
    • /
    • pp.125-138
    • /
    • 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.

  • PDF

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

  • 김주현
    • 한국경영과학회지
    • /
    • 제15권2호
    • /
    • pp.45-61
    • /
    • 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.

  • PDF

Immune Disorders and Its Correlation with Gut Microbiome

  • Hwang, Ji-Sun;Im, Chang-Rok;Im, Sin-Hyeog
    • IMMUNE NETWORK
    • /
    • 제12권4호
    • /
    • pp.129-138
    • /
    • 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.