• Animal Systematics, Evolution and Diversity
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• 제8권2호
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• pp.331-336
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• 1992

한국 동해에서 채집된 반딧불오징어, Enoploteuthis (Paraenoploteuthis) chunnii의 형태학적 기재중 지금까지 보고되지 않은 교접팔 보호막의 형태적변이, 정포의 형태 및 채집수심을 기재하며, 이러한 기록들을 과거 연구자들의 보고와 비교 고찰하였다.

• Animal Systematics, Evolution and Diversity
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• 제22권1호
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• pp.101-104
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• 2006

Two new species of Arcuphantes Chamberlin and Ivie, 1943 (Linyphiidae), Arcuphantes juwangensis n. sp. and Arcuphantes namhaensis n. sp., are described with illustrations. All Korean Arcuphantes have a convoluted epigynal scape, and show close similarities in their morphological characters, but easily discriminated in the structures of proximal protuberances and the distal wing-shape of their epigynum.

• Animal Systematics, Evolution and Diversity
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• 제22권2호
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• pp.117-120
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• 2006

The first zoeas of Eualus leptognathus are described and illustrated in detail from laboratory-hatched material. Morphological comparison is made with previous description of this species from Japan. Minute rostrum and two anteroventral denticles behind pterygostomian spine on the carapace readily distinguish the first zoeas of Eualus leptognathus from those of Eualus sinensis, the only known zoeas of Eualus from Korean waters.

• Animal Systematics, Evolution and Diversity
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• 제39권3호
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• pp.114-117
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• 2023

The genus Opius Wesmael, 1835 (Hymenoptera: Braconidae: Opiinae) generally parasitizes larvae of Agromyzidae, Anthomyiidae, Drosophilidae, Tephritidae, Ephydridae and Cecidomyiidae, of which 32 species are recorded in South Korea. In China, seven new species of the genus Opius have been known. Among them, Opius crenuliferus Li & van Achterberg, 2013 is reported for the first time in South Korea. Specimen was collected by sweeping in West Daeshin-dong, Busan, Korea. In this study, description, and diagnostic illustration of O. crenuliferus are provided.

• 한국실내디자인학회논문집
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• 제19권4호
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• pp.90-98
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• 2010

This study intends to understand the change of the library's bookshelves shape, composition and arrangement based on the social-culture in each period. For this purpose, this study analyzes the morphological shift of the library's bookshelves and knowledge information focused on the history of western libraries from the ancient libraries to the modern public libraries before the 20th century. And the results are follows. 1) We can make sure that the changes of the library's bookshelves are based on the environmental factors like social cultural political factors and also understand that the knowledge information are developed based on the function which is decided by the needs of the times and the serious necessities of users. With this reason, the morphology and the function of the library's bookshelves have been changed. 2) The characters and meanings of the library's bookshelves are changed with the times from movable type to fixed type, from closing type to opening type, from privileged use to public use, from religious contents to general scientific contents. 3) The morphology of the library's bookshelves are shifted from cylindrical box to Chest type Press type and Lectern system, Stall system, Wall system and advanced to Mixed(Stall+Wall) system. 4) The construction and arrangement methods of the library's bookshelves are determined by the convenience and efficiency of the installation for the perusal environments as well as the regarding to the social-cultural factors. The arrangement criteria are determined by the security topics in the earlier stage, after that determined by the lightening topics and nowadays the access topics to the information. These analysis results are very useful to research the technology of the library's bookshelves to be changed continuously and also to forecast the morphology of the library's bookshelves can be planned in the spaces of the future libraries.

• ALGAE
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• 제26권1호
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• pp.21-32
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• 2011

Studies of the red algal genus Bostrychia over the last 15 years have made it a model system for many evolutionary processes within red algal species. The combination of newly developed, or first employed methods, in red algal species studies has made Bostrychia a pioneer genus in intraspecific studies. Bostrychia was the first genus in which a mitochondrial marker was used for intraspecific red algal phylogeny, and the first for which a 3-genome phylogeny was undertaken. The genus was the first red alga used to genetically show maternal plastid and mitochondria inheritance, and also to show correlation between cryptic species (genetically divergent intraspecific lineages) and reproductive incompatibility. The chemotaxonomic use, and physiological function of osmolytes, has also been extensively studied in Bostrychia. Our continuous studies of Bostrychia also highlight important aspects in algal species studies. Our worldwide sampling, and resampling in certain areas, show that intensive sampling is needed to accurately assess the genetic diversity and therefore phylogeographic history of algal species, with increased sampling altering evolutionary hypotheses. Our studies have also shown that long-term morphological character stability (stasis) and character convergence can only be correctly assessed with wide geographic sampling of morphological species. While reproductive incompatibility of divergent lineages supports the biological species nature of these lineages, reproductive incompatibility is also seen between isolates with little genetic divergence. It seems that reproductive incompatibility may evolve quickly in red algae and the unique early stages of fertilization (e.g., gametes covered by walls, active movement of spermatium nuclei to the distant egg nucleus), also well investigated in Bostrychia,. may be key to our understanding of this process.

• 환경영향평가
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• 제31권3호
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• pp.161-172
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• 2022

본 연구는 현대도시 문제점 중 하나인 교외개발 사례를 통해 도시의 진화성을 이해해 보려는 시론적 연구이다. 방법론으로 (1) 국내 9개(1980-2010), 미국 49개 도시(1992-2019년)의 도시확장강도지수(UEII) 산출, (2) 2019년 시카고 대도시권 도시지역을 대상으로 형태학적 공간패턴(MSP)과 엔트로피(Entropy) 분석이다. 주요결과는 (1) 도시확산 현상은 보편적인 도시변화 특성으로 이해할 수 있다, (2) 전체지역의 특성은 하위단위 도시들의 특성과 다른 방향으로 나타날 수 있다. 연구함의는 (1) 교외 도시확산현상은 도시에게 부여된 여러 기능에 부합하는 도시변화 현상으로 이해할 수 있으며 하위단위 도시·생활권의 기능이 큰 의미를 갖는다, (2) 진화론적 관점에서의 도시는 기존의 발달성장 논의와 큰 차이가 있다. 이 연구는 도시의 부분적 특성을 사례로 삼고 있다는 한계를 보이며 향후 도시의 진화하는 속성을 이해하기 위한 폭넓은 실증연구가 필요하다.

• 한국태양에너지학회 논문집
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• 제34권4호
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• pp.9-16
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• 2014

A proton exchange membrane is a core component in the proton exchange membrane fuel cell because the role of proton exchange membrane(PEM)is supplying proton conductivity to fuel cell, a gas separator, and insulating between an anode and cathode. Among various role of PEM, supplying proton conductivity is the most important and the proton conductivity is strongly related the structural evolution of PEM by hydration. Thus a lot of studies have done by past few decade based on small angle X-ray scattering and wide angle X-ray scattering for understanding morphological structure of the PEM. Resulting from these studies, several morphological models of hydrated PEM are proposed. Current sensing atomic force microscopy (CSAFM) can map morphology and conductance on the membrane simultaneously. It can be the best tool for studying heterogenous structured materials such as PEM. In this study, the hydration of the membrane is examined by using CSAFM. Conductance and morphological images are simultaneously mapped under different relative humidity. The conductance images, which are mapped from different relative humidity, are analyzed by statistical methode for understanding ionic channel variation in PEM.

• 한국전기전자재료학회논문지
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• 제23권11호
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• pp.859-863
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• 2010

Evolution of surface morphology of ${\alpha}-Al_2O_3$ substrate was investigated as a function of annealing temperature and time. Commercial (0001) ${\alpha}-Al_2O_3$ single crystal substrates were annealed in the range of $600-1000^{\circ}C$ in air. At $600^{\circ}C$, step-terrace structure started to be formed on the substrate. However, the surface roughness on the terrace was still considerable and a number of islands were observed on the step edges as well as the terraces. As the annealing temperature increased, the islands were absorbed into the step edges. Thus the terraces were smoother and the step edges were more straightened. Well-defined surface with a step height of 0.2 nm was formed above $900^{\circ}C$. On the other hand, when the substrate was annealed at a fixed temperature of $1000^{\circ}C$, the change of surface morphology was observed for the substrate annealed for 10 min. After the annealing for 30 min, the surface on which any islands could not survive was observed.

• International Journal of Concrete Structures and Materials
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• 제10권1호
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• pp.61-73
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• 2016

In predicating the probability distribution of chloride diffusion coefficient of recycled aggregate concrete ($D_{RAC}$), the morphological characteristics of three phases, i.e., the old attached mortar, the natural aggregate and the new mortar, should all be taken into account. The present paper attempts to develop a probability density evolution method (PDEM) to achieve this. After verifying the derived PDEM results with experimental results, the effects of old attached mortar to the $D_{RAC}$ are examined in a quantitative manner. It is found that (1) the variation of the attached mortar content is much sensitive to $D_{RAC}$; (2) given the probability distribution of the content and chloride diffusion coefficient of old mortar, the probability distribution of DRAC can be analysed based on the PDEM; and (3) the critical chloride diffusion coefficient at a certain assurance rate can be obtained by the PDEM. The analysis results of this investigation will be valuable to the durability design for RAC.