• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.231-232
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• 2013

이 연구는 경남지역 소재 무도수련장에 다니고 있는 수련생들을 모집단으로 무도수련장 지도자의 운동지원과 재등록의사의 관계를 규명하는데 목적이 있다. 이 연구를 위해 총 220명의 무도수련장의 수련생들을 유의표집하였다. 이 연구는 SPSSWIN 18.0과 AMOS 18.0 프로그램을 활용하여 통계처리를 실시하였다. 자료처리 방법은 신뢰도분석(reliability analysis)과 공변량구조분석(structural equation modeling) 등의 통계기법이 활용되었다. 결론은 다음과 같다. 무도수련장 지도자의 정보적 지원, 물질적 지원, 사교적 지원 등이 재등록의사에 중요한 영향을 미친다.

• Journal of the Korean Data and Information Science Society
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• v.11 no.2
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• pp.295-302
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• 2000

We study the efficient method to estimate the parameters for the Weibull model with covariates which occupies an important position in survival analysis. A treatment period may be divided by the stages of treatments under the different treatment arams. The piecewise method is considered to obtain the estimators of the parameters by maximum likelihood method. We explore the real data to show that the piecewise is more efficient than the nonpiecewise to estimate the parameters.

• The Korean Journal of Applied Statistics
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• v.9 no.1
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• pp.75-89
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• 1996

This paper proposes a goodness-of-fit test for checking the adequacy of the additive risk model with a binary covariate. The test statistic is based on martingale residuals, which is the extended form of Wei(1984)'s test. The proposed test is shown to be consistent and asymptotically normally distributed under the regularity conditions. Furthermore, the test procedure is illustrated with two set of real data and the results are discussed.

• Journal of Korean Academy of Nursing
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• v.24 no.2
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• pp.241-250
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• 1994

어머니와 아기의 관계는 가장 기초적인 인간관계로서 아기의 탄생은 한 가족의 생활에 지대한 영향을 미치는 것으로 알려져 왔다. 아기 출산후 어머니들이 겪는 변화는 초산모와 경산모가 달라 새로 태어난 아기의 양육도 책임지며, 다른 자녀와의 관계도 유지해야하는 경산모는 초산모보다 더 많은 역할을 수행하여야 한다. Rubin(1967)은 이것을 다자손(poly-Progeny)의 문제라고 서술하면서, 경산모의 어려움을 언급하였다. 그러나 사회에서나 간호현장에서는 처음 어머니가 된 초산모를 어떻게 도와야 하는가에 주로 관심을 갖고 있으며, 그동안 이루어진 연구도 초산모를 대상으로 하는 것들이 대부분이었다. 이에 본 연구에서는 산후 4개월된 초산모와 경산모의 모성역할 긴장과 모성역할 획득정도의 차이를 조사하였다. 연구결과 모성역할 획득 중 모성역할 수행과 모성 정체감은 초산모와 경산모에 따라 차이가 없었으나, 아기와의 상호작용은 초산모가 경산모보다 더 많이 한다고 보고 하였다. 모성 역할 긴장은 경산모가 초산모보다 더 느끼는 것으로 나타났으며, 어머니의 연령과 남편의 지지를 공변량 처리하여 보았을 때도 경산모가 초산모보다 모성역할 긴장을 더 느끼고 있었다.

• 모자간호학회지
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• v.4 no.1
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• pp.33-40
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• 1994

모유수유 유무와 아기의 신체적, 정서적 발달과의 관계, 모유수유 성공에 영향을 주는 요소, 모유수유를 성공시키기 위한 전략 등 모유수유를 증진시키기 위한 연구는 많이 이루어 졌다. 이에 비하여 모유수유가 어머니의 모성행위, 어머니의 만족에 미치는 영향 등 모유수유 유무가 어머니의 정서에 미치는 영향에 관한 조사는 거의 이루어지지 않은 실정이다. 그러나 많은 모성간호사들은 모유수유 어머니가 인공수유 어머니보다 아기 양육에 더 자신감을 갖고 있고, 어머니로서의 역할에 더 만족한다고 믿고 있다. 또한 피치못할 사정으로 인공수유를 하는 어머니들 스스로도 모유수유를 하지 못함 때문에 아기에 대한 죄의식을 갖고 있을 수 있다. 그래서 생후 4개월된 아기를 갖고 있는 어머니를 대상으로 모유수유 유무와 어머니의 모성역할 긴장과 모성역할 획득 정도에 차이를 연구하였다. 연구결과 모유수유 유무에 따라 모성역할 획득정도에 차이가 없었으며, 모성역할 긴장에도 차이가 없었다. 또한 남편의 지지와 친척 및 친구의 지지를 공변량으로 처리하여 모유수유 유무에 따라 모성역할 획득정도에 차이를 알아 본 결과 모유수유 유무에 따라 모성역할 획득 정도에 차이가 없었고, 모성역할 긴장 역시 차이가 없었다.

• The Korean Journal of Applied Statistics
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• v.17 no.1
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• pp.1-12
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• 2004

In this paper, we consider choosing the appropriate covariance structure for analyzing repeated measures data with three repeat factors from a study of blood pressure data, which is collected from the local residents of Yangpyeong, Gyeonggi-do (2001) and fitted linear mixed models to find the significant covariates on outcome variable(Blood Pressure)

• Transactions of the Korean Society of Mechanical Engineers B
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• v.20 no.3
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• pp.1015-1027
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• 1996

In this paper, a numerical procedure for the calculation of the incompressible Navier-Stokes equations in a generalized nonorthogonal body fitted coordinate system is proposed and is validated through three test problems. Present numerical procedure derives the pressure equation by using the pressure substitution method on the regular grid system, and discretized momentum equations are based on the covariant velocity components. Cavity flow, backward facing step flow, and two dimensional channel flow with a sinusoidal wavy wall are chosen as three test problems. Numerical solutions obtained by present procedure shows a good agreement with previous numerical and/or experimental results. Convergence rate is also satisfactory.

• Research in Plant Disease
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• v.12 no.1
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• pp.15-19
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• 2006

This study was carried out to know pathogenicity of the pathogen isolated in several location of Korea and penetration mechanism of the Pseudocercospora vitis ($(L\acute{e}v)$.) Speg. Inoculation tests at room temperature were performed on both sides of leaves with different isolates of the fungus. The typical symptoms appeared on the abaxial leaf surface, but no symptom was observed on the adaxial leaf surface with all isolates. The average incubation period was nine days, since all symptoms appeared from 8 to 10 days after inoculation. In order to know the mechanism of invasion of P. vitis to grapevine, the behavior of penetration hyphae through stomata were compared in two cultivars having different level of resistance. In order to know the mechanism of resistance of grape vine to P.vitis, two cultivars having different level of resistance were compared by counting the numbers and measuring size of the stomata per leaf. In a susceptible cultivar Campbell Early, the number of stomata was more than that of a resistance cultivar 'Kyoho'. In a susceptible cultivar 'Campbell Early', the fungus entered readily into stomata after inoculation. However, in a resistant cultivar 'Kyoho', the fungus seemed to pass over or surrounded only the guard cells. In comparison of height of guard cells of stomata between the two cultivars, significant differences were observed by scanning electron microscopy and light microscopy. The height of guard cells of 'Campbell Early' showed a little higher than those of 'Kyoho' known to be resistant to the fungus.

• Korean Journal of Plant Taxonomy
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• v.33 no.4
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• pp.421-433
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• 2003

To examine the leaf epidermal microstructure, nine species in five genera (Daphne L. - 4 spp., Diarthron Turcz. - 1 sp., Edgewarthia Meisn. - 1 sp., Stellera L. - 1 sp., Wikstroemia Endl. - 2 spp.) of the Korean Thymelaeaceae were investigated by light microscopy (LM) and scanning electron microscopy (SEM). The stomata of stuo야ed taxa were 'hypostomatic type' and the size range of guard cell was $13.8-34.4{\times}8.7-22.9{\mu}m$: the smallest size of stomata was found in Diathran linifolium ($15.9{\pm}2.6{\times}10.0{\pm}1.3{\mu}m$), while the largest one was measured to Daphne adara ($32.8{\pm}1.6{\times}20.7{\pm}1.3{\mu}m$). The stomatal complex was anomocytic in the most studied taxa, except Daphne kiusiana by having combined with anisocytic together. The shapes of epidermal cells are undulate anticlinal wall. The size range of epidermal cell was $20.7-61.0{\mu}m$; the smallest size of epidermal cell was found in Stellera charnaejasme ($26.0{\pm}1.9{\mu}m$), on the other hand the largest one was found in Edgeworthia chrysantha ($53.6{\pm}3.1{\mu}m$). The well-developed flaky epicuticular waxes can be divided three kinds of pattern - (1) smooth in comparison, not entire platelets and scattered, (2) isolated flake-like platelets, mostly paralleled, sparsely, (3) flake-like platelets, flat, membraneous, protruding from the surfaces at varying angles and densely. Two types of trichome are recognized; (1) Type I: uniseriate trichome of striate surface (D. genkwa, Diarthron linifalium, E. chrysantha, W. ganpi and W. trichotama), (2) Type II: multicellular trichome of papillose surface, uncinated 3-4 nodes (Diathron linifolium). Finally, the systematics significance of the leaf micromorphological features in identification and elucidation of Korean Thymelaeaceae, especially between or within the genera including among the species is also briefly discussed.

• Journal of Plant Biology
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• v.28 no.2
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• pp.105-118
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• 1985

This study was carried out to investigate the epidermal structure and types of stomata on the upper and lower surfaces of the leaves in six species and one variety belonging to Korean Crassulaceae. The shape of epidermal cells was polygonal, isodiametric, or elongated. The cell wall was thick, sinuous or deeply sinuous. The subsidiary cell wall was thin or mostly arched. The cytolith-containing cells were found in Orostachys japonicus. The distribution of stomata was more on the upper surface than on the lower surface in the leaves of O. japonicus and Sedum sarmentosum. The stomata in the other species were less on the upper surface than on the lower surface, and stomatal size was different in each species. The great majority of stomatal types was the helico-eumesogenous type. This type was subdivided into two, parahelico-eumesogenous type and diahelico-eumesogenous type by us on the basis of the angle of division of guard mother cell and the long axis of the last-formed subsidiary cells. Sometimes allelo-eumesogenous type as well as aniso-eumesogenous type was found. The tetra-eumesogenous type with four mesogenous subsidiary cells was rarely observed. It was observed that the varieties of aniso-eumesogenous type with one to three subsidiary cells and one helix of subsidiary cells were developed by the secondary division of subsidiary cells of aniso-eumesogenous stoma. The compound shape of helico-eumesogenous stomata was found. Five new kinds of stomatal types were observed as follows; the helico-tetra-eumesogenous type, the coallelohelico-eumesogenous type, the cohelico-allelo-eumesogenous type, the duplotetra-eumesogenous type, and the aniso-euperigenous type. These types were reported here in the vascular plants for the first time.