• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2002.10a
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• pp.353-358
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• 2002

A feature-based inspection planning system is proposed in this research to develop more efficient measuring methodology for the OMM (On-machine measurement) for complicated workpiece having many primitive form features. This paper focuses on the development of the CAIP (computer-aided inspection system) methodologies. The optimum inspection sequences for the features are determined by analyzing the feature information such as the nested relations and the possible probe approaching directions of the features, and forming feature groups. A series of heuristic rules are developed to accomplish it. Also, each feature is decomposed into its constituent geometric elements, and then the number of sampling points, the locations of the measuring point, the optimum probing path are determined by applying the fuzzy logic, Hammersley's method, and the TSP algorithm. To verify the proposed methodologies, simulations are carried out and the results are analyzed.

• YAKHAK HOEJI
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• v.39 no.2
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• pp.118-130
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• 1995

Aliphatic & aromatic compounds with two nucleophilic functional groups which were chosen as nucleophiles reacted with 2,3-dichloro-1,4-naphthoquinone as a substrate to give cyclized products by nucleophilic vinyl substitution. And the trends in the syntheses of the heterocyclic compounds was studied and expounded. Besides, the biological activities of the products, especially activity as an agricultural chemical, were examined. Moreover 5-aminomethyl-2-pyrrolidinone was synthesized for the purpose of forming a polynuclear heterocyclic compound containing a similar structure of azasteroid. However only one chlorine of 2,3-dichloro-1,4-naphthoquinone was replaced by an amino group of pyrrolidinone and cyclization did not take place.

• The Research Journal of the Costume Culture
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• v.12 no.1
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• pp.104-120
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• 2004

Animation character market in Korea has been dominated by licensed characters (e.g., Walt Disney′s) of which market share is 80%. While market share for Korean characters such as "Mashimaro" and "Little Dinosaur Dooly" is increasing, the application of such characters to fashion products is still limited. For the development of the Korean character market, application of original animation characters should be applied to various fashion products. The main purpose of this study was to design toddler apparel line using "Little Dinosaur Dooly," one of the most popular domestic animation characters. The design focus is the green color of Dooly because the color is the distinctive concept of the brand. Results of the study indicated that developing toddler apparel line with a Korean animation character was a meaningful attempt, as imported licensed characters were dominant in domestic fashion market. The key differentiating factor was the use of green color. In addition, use of various supporting characters, namely Dooly′s friends, demonstrated potential line extension forming animation character groups similar to Warner Brothers′"Looney Tunes."

• Journal of the Korean Society for Precision Engineering
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• v.3 no.2
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• pp.76-90
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• 1986

This paper discusses the analysis of flexible manufacturing systmes design using computer simulation method. The simulation language employed is SIMAN which is a powerful tool to model flexible manufacturing systems. The important characteristics of FMS, its design and operational problems, and structures based on the number of NC machine tools and their layout are discussed for the appli- cations of FMS to manufacturing. A new algorithm for forming part families and machine groups has been proposed and its software is also developed. Simulation procedure using SIMAN for analysis of FMS designs is discussed and two design problems are analyzed and evaluated to illustrate systemstic procedure for analysis of FMS.

• Bulletin of the Korean Chemical Society
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• v.18 no.1
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• pp.86-91
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• 1997

Complexation of primary alkylammonium ions by 1, 3-distal calix[4]arene diesters was studied by NMR spectroscopy. The guest alkylammonium ions are found to bind mainly to the two ester moieties and are oriented outward with respect to the cone cavity of the host, forming exo-type complexes unlike the case of alkylammonium-calix[6]arene systems. Measurement of T1 also revealed that the primary binding site is the two ester moities and phenolic OH groups. The temperature dependence of the chemical shifts of phenolic OH protons in these diesters correlates with the basicity of the solvent moderately well and the temperature coefficients of their chemical shifts are found to significantly decrease upon complexation with propylammonium ion.

• Journal of Ginseng Research
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• v.20 no.2
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• pp.149-153
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• 1996

Studies were Performed to determine whether the water fraction of Panax ginseng Protected radiation damage to hair medullar cells of N:GP(s) mice after in vivo irradiation with $^{60}Co{\;}{\gamma}-rays$. The hair follicles in the middle of the growth cycle were analysed 3 days after 3 Gy irradiation for the changes in the number of cells in the forming medulla of the hair in the region just above the germinal matrix of the growing (anagen) hair follicle. The radioprotective effect of ginseng was compared with the irradiation control. The medullar cell count per unit length ($100{\;}\mu\textrm{m}$) of hair follicle was higher in the pretreated-groups of ginseng, both oral (2 mg/ml of drinking water, p<0.05) and intraperitoneal (0.3 mg/head, p<0.001) treatments, than the irradiation control. These data suggested that the water fraction of Panax ginseng may reduce cell damages on the body surface caused by ${\gamma}-rays$.

• The Journal of Korean Academic Society of Nursing Education
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• v.25 no.1
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• pp.48-57
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• 2019

Purpose: This study aimed to explore and understand nursing students' nunchi experiences in clinical practice. Methods: Participants were nursing students in the third and fourth years who had clinical experience. A total of 20 nursing students were divided into three focus groups based on their grade levels and gender. Data were collected from December 2017 to March 2018 through focus group interviews and were analyzed via Colaizzi's phenomenological methodology. Results: The study results consisted of 5 theme clusters, 11 themes, and 24 subthemes. These clusters were: confusion about ambiguous behavioral standards, effort in following social norms, concern about getting hurt, physical and psychological exhaustion, and forming social attitudes. Conclusion: These results show that nunchi has positive and negative effects on the clinical practice of nursing students. We need to improve the causes of nunchi, which can have a negative impact on clinical practice.

• Bulletin of the Korean Chemical Society
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• v.6 no.6
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• pp.333-337
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• 1985

Cholesteryl formate$(HCOOC_{27}H_{45})$ is monoclinic, space group $P2_1$ with a=15.757(1), b=6.073(1), c=13.592(2) ${\AA},{\beta}=94.1(1)^{\circ},Z=2.$ Intensities were measured, using an automatic diffractometer with graphite-monochromated $Cu-K{\alpha}$ radiation. The structure was solved by a direct method and refined by least-squares method. The final R factor was 0.087 for 1640 observed reflections. There are no unusual bond distances and angles. The molecules are arranged in antiparallel array forming monolayers of thickness $d_{100}=15.757{\AA}.$ Adjacent cholesteryl ring groups by the translation operation along the b axis.

• Educational Technology International
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• v.16 no.1
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• pp.1-30
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• 2015

The purpose of this research is to propose a novel social LMS developed for group collaborative learning with a think-aloud tool integrated for sharing cognitive processes in order to improve group collaborative learning performance. In this developmental research, the system was designed with three critical elements: the think-aloud element supports learners through shared cognition, the social network element improves the quality of collaborative learning by forming a structured social environment, and the learning management element provides a understructure for collaborative learning for student groups. Moreover, the three critical elements were combined in an educational context and applied in three directions.

• The Bulletin of The Korean Astronomical Society
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• v.46 no.1
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• pp.30.2-30.2
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• 2021

The extended Lyα nebulae (also known as Lyα blobs or LABs) observed at z=2-6 can provide clues to galaxy formation in the early universe. The connection of LABs with the overdensities of compact Lyα emitters suggests that they are associated with matter density peaks in the universe and thus likely to evolve into the present-day groups and clusters of galaxies. However, the mechanism powering the extended Lyα emission in LABs is remained controversial. The detection of polarization signals that follow the theoretically predicted trend is interpreted as strong evidence supporting that the LABs are caused primarily by the resonance scattering of Lyα originating from star-forming galaxies and AGNs. However, Trebitsch et al. (2016) claimed that the radial profile of polarization could be better explained by the scenario in which Lyα photons are produced in the cooling gas surrounding galaxies and then self-scattered by the gas, rather than by the scattering scenario of photons originating from the central galaxies. In this presentation, using LaRT, a state-of-art Lyα radiative transfer code, it is demonstrated that the observed polarization pattern can be reproduced even with the scattering scenario.