• 환경영향평가
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• 제6권2호
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• pp.153-164
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• 1997

This study was conducted to develop the new Environmental Impact Assessment techniques for the grading of rareness in plant. 17 EISs which were submitted in 1996 were analyzed to know the problems in existent EIA techniques for the conservation of rare plants. Category of rare plant was reevaluated and evaluation technique for the grading of rareness in plant was developed. The results obtained from this study were as follows: 1. The evaluation technique of rareness in plant was not reflected in the current preparation provision for EIS. And t his fact also appeared in most of the EIS which were reexamined in this study. 2. The category of rare species which have been considered as the subject of protection in EIA have to be enlarged to more than legally protected species designated by MOE. 3. The taxonomic characteristics and status of species, characteristics of population, geographical characters, extent of threat and its possibility by man resulted from the habitat loss were investigated. Each item was endowed scores from 1 to 5 and all the scores were summed, and then this value was used to evaluate the order of conservation. 4. Conservation measures for the rare plants have to be applied according to the levels of rareness grade, and they are absolute conservation, in situ conservation, transplanting and ex situ conservation, post observation and none by the levels from A to E. 5. Considering the phenology of rare plants, investigation for the rare plants have to be made a1 least three times. 6. Size of the MVP(Minimum Viable Population), pollination ecology also have to be considered for the conservation of rare plants. And in the case of adopting ex situ conservation measure, the site and methods for the conservation of rare plants have to be proposed in detail.

• 한국엔터테인먼트산업학회논문지
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• 제13권3호
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• pp.333-342
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• 2019

본 연구의 목적은 CJ CGV, 롯데시네마, 메가박스의 멀티플렉스 영화산업에 관한 사례를 비교분석하여 경영전략관점에서 CJ CGV만의 혁신적인 핵심역량이 무엇인지 연구하는 데 있다. 이를 통해, 컬쳐플렉스의 확대과정을 바탕으로 주요 성공요소가 무엇인지 도출하고자 핵심역량 전략인 VRIO(Value, Rareness, Inimitability, Organization)모델 분석하였다. 분석결과, CJ CGV의 차별화된 가치로는 영화관의 문화놀이터인 컬쳐플렉스이고, 희소성에서는 영화관의 기술적 혁신을 통한 종합생활문화공간으로의 변신이며, 모방불가능성에는 사회공헌으로써 CGV의 사회적 브랜드파워 확립하였으며, 조직화하는데 전 세계의 CGV 글러벌화 등이 CJ CGV의 핵심역량으로 나왔음을 알 수 있다. 기존 영화관의 활용도를 넓혀 파격적이고 혁신적인 개발에 앞장서 CJ CGV는 문화 체험영화관의 브랜드 가치를 높이고 고객의 만족도를 높이는데 기여하고 있다. CJ CGV는 끊임없는 경쟁 지배력을 높여 CGV만의 핵심역량 기업 가치를 상승시키고 있는 것이다.

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.211.1-211.1
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• 2003

On the purpose of develcpement of antioxidative compound from natural sources, medicinal plants known to have antioxidant actuvity have been examined concening DPPH radical scavenging activity and SOD-liked activities. Among 8 plants exhibiting the activity, Houttuynia cordata THUNB was selected as resources to search for active compounds due to rareness of study. The antioxidative compounds from Houttuynia cordata THUNB,quercitrin was assayed using a DPPH free radical. The DPPH radical scavenging activity of quercitrin was similar to that of BHA and Ascorbic acid

• 한국병원경영학회지
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• 제21권3호
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• pp.53-64
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• 2016

The study empirically examines the classic hypothesis on resource-based view(RBV) theory, which is the possible relationship between competitive advantage and performance. For the study, we have surveyed 198 hospital administrators in Korea. By testing the hypotheses at conceptual level, a more robust approach, we found that (1) if a hospital possesses and exploits resources and capabilities that are both valuable and rare, it will attain a competitive advantage, and (2) the attaintment of such advantage will enable the hospital to improve its performance. The results may be interest to both academics and practitioners. From an academic standpoint, the study more accurately captures the dynamics of the theory by pairing resources-capabilities as opposed to individual resources or capabilities. From a practitioner perspective, it is suggested that hospital managers need no necessarily seek out novel resources and capabilities, but rather develop novel ways in which to combine those resources and capabilities to which they do have access.

• 한국수학사학회지
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• 제35권1호
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• pp.1-18
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• 2022

This paper presents a statistical machine learning method that generates the implied volatility surface under the rareness of the market data. We apply the practitioner's Black-Scholes model and Gaussian process regression method to construct a Bayesian inference system with observed volatilities as a prior information and estimate the posterior distribution of the unobserved volatilities. The variance instead of the volatility is the target of the estimation, and the radial basis function is applied to the mean and kernel function of the Gaussian process regression. We present two types of Gaussian process regression methods and empirically analyze them.

• 기술혁신학회지
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• 제18권3호
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• pp.416-443
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• 2015

본 연구는 자원기반관점에 있어 경쟁우위의 원천이 산업의 구조적 특성에 있는 것이 아니라 기업이 보유한 자원의 전략적 성격에 따른다는 점에 착안하고 있다. 따라서 자원기반관점에서는 특정한 자원을 보유, 개발, 유지하고자 하는 의사결정이 전략의 중심에 자리 잡게 되며, 어떠한 자원이 전략적 자원인가를 선별해내는 것이 기업의 전략경영체계에서 가장 핵심적이며, 그 출발점이 되는 작업이라고 볼 수 있다. 이러한 점에서 전략적 자원의 속성을 정의하고 이를 판별하려는 시도는 자원기반관점에서 중요하게 다루어진 이슈 중의 하나로, 특히 Barney가 제시한 VRIO Framework는 전략적 자원을 판별하기 위한 도구로 실무적으로 널리 이용되어 왔다. 그러나 VRIO Framework는 이를 구성하고 있는 핵심요소(가치, 희소성, 모방난이도, 조직)의 개념이 지나치게 포괄적으로 설명되고 있으며, 계량화가 어려운 문제점 때문에 Framework의 유효성 검증과 관련한 실증연구가 충분히 이루어 지지 않았다. 본 연구에서는 2,252개 국내 기술중소기업을 대상으로 실제 기술평가사례 및 재무자료를 이용해 기술자원의 전략적 자원속성과 경쟁우위의 관계를 바탕으로 VRIO Framework의 유효성을 구조방정식에 의한 모델분석을 통해 실증적으로 검증해 보았다. 그 결과 VRIO Framework에서 제시한 전략적 자원속성(가치, 희소성, 모방난이도)은 경쟁우위에 유의한 정(+)의 영향을 미치며, 조직역량은 경쟁우위에 다시 통계적으로 유의한 정(+)의 영향을 미치는 매개적 역할을 하는 것으로 나타났다.

• 천문학회보
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• 제40권1호
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• pp.45.1-45.1
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• 2015

Galaxy clusters have provided important information to understand the evolution of the universe, since the number density and mass of clusters are tightly related to the cosmological parameters. In addition, galaxy clusters are an excellent laboratory to investigate the galaxy evolution in dense environments. However, finding galaxy clusters at high redshift ($z{\geq}1$) still remains as a main subject in astronomy due to their rareness and difficulty in identifying such objects from optical imaging data alone. Here, we report a spectroscopic follow-up observation of distant galaxy cluster candidates identified by a deep optical-NIR dataset of Infrared Medium-deep Survey. Through the galaxy spectra taken with the IMACS instrument on the Magellan telescope, we confirm at least 3 massive clusters at z~0.92. Interestingly, the maximum spatial separation between these clusters is ~8Mpc, which implies that this system is a new supercluster in the distant universe. We also discuss properties of galaxies in these clusters based on multi-wavelength photometric data.

• 천문학회보
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• 제40권2호
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• pp.30.1-30.1
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• 2015

Radio relics are diffuse radio sources found in the outskirts of galaxy clusters and they are thought to trace synchrotron-emitting relativistic electrons accelerated at shocks. We explore a diffusive shock acceleration (DSA) model for radio relics in which a spherical shock with the parameters relevant for the Sausage radio relic in cluster CIZA J2242.8+5301 impinges on a magnetized cloud containing fossil relativistic electrons. This model is expected to explain some observed characteristics of giant radio relics such as the relative rareness, uniform surface brightness along the length of thin arc-like radio structure, and spectral curvature in the integrated radio spectrum. We find that the observed surface brightness profile of the Sausage relic can be explained reasonably well by shocks with speed $u_s{\sim}3{\times}10^3km/s$ and sonic Mach number $M_s{\sim}3$. These shocks also produce curved radio spectra that steepen gradually over $(0.1-10){\nu}_{br}$ with a break frequency ${\nu}_{br}{\sim}1GHz$, if the duration of electron acceleration is ~60-80 Myr. However, the abrupt increase in the spectral index above ~1.5 GHz observed in the Sausage relic seems to indicate that additional physical processes, other than radiative losses, operate for electrons with the Lorentz factor, ${\gamma}_e$ > $10^4$.

• Genomics & Informatics
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• 제3권1호
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• pp.8-14
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• 2005

Although much is known about the molecular biology of platelets, the megakaryocytes' (MKs) molecular biology was not understood so well because of their rareness. By the cloning and characterization of thrombopoietin (TPO), which is the principal regulator of the growth and development of the MKs, researches on the MKs have been growing rapidly. To understand megakaryocytopoiesis, we investigated the gene expression profile of the MKs using oligonucleotide microarray where 10,108 unique genes were spotted. Comparing the fluorescence intensities of which ratio is $\ge$ ${\mid}2{\mid}$, 372 genes were up-regulated and 541 genes were down-regulated in MKs. For confirmatory expression, RNase protection assay (RPA) establishing abundant apoptotic gene expression was carried out. In MKs, many of the known genes, including several platelet related genes, GATA binding protein were highly expressed. Particularly, TGF beta, clusterin (complement lysis inhibitor), and thymosin beta 4 (actin-sequestering molecules) were expressed highly in MKs. As MKs specific expressed genes may regulate normal and pathologic platelet (and/or MK) functions, the transcript profiling using microarray was useful on molecular understanding of MKs,

• 한국환경과학회지
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• 제27권5호
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• pp.319-332
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• 2018

This study aimed to provide fundamental data for enlargement strategy of Ramsar site through the analysis of designation properties about 22 sites which has been registered for 20 years since Yongneup (Mt. Daeam) was designated as the first Ramsar site in Korea. Designation properties were analyzed on the basis of Ramsar Information Sheet and ecological properties was mainly analyzed in relation to designation criteria. Designation of Ramsar wetland was concentrated before and after Changwon Congress in 2008 and in terms of area 11 sites are below $1km^2$ and 5 sites are above $10km^2$. The average number of applied designation criteria was 2.86 and Criterion 2 (threaten species), Criterion 1 (representativeness and rareness of wetland type) and Criterion 3 (biodiversity) are mainly applied. In terms of protection species, internationally recognized species were 18 species on IUCN redlist, 12 species on CITES and 13 species on CMS, and nationally recognized species were 76 species on endangered species designated by Ministry of Envirionment, 83 speceis on national redlist and 71 speceis on endemic species respectively.