• The Magazine of Kiice
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• v.15 no.1
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• pp.60-66
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• 2014

• Korean Architects
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• s.591
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• pp.126-141
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• 2018

• Journal of the Korean Professional Engineers Association
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• v.45 no.1
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• pp.59-60
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• 2012

• Journal of the Korean Geographical Society
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• v.19
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• pp.27-40
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• 1979

• ALGAE
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• v.20 no.4
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• pp.325-331
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• 2005

Populations of Campylaephora borealis (Nakamura) Seo, Cho et Boo and C. crassa (Okamura) Nakamura show a year-around occurrence of all life-history stages. Such a concurrency of life-history stages produces problems in recognizing species in the field. Here, we invesitgated the morphological variation and life-history stages of both species using a statistical character analysis. Life-history stage was correlated with the seawater temperature in C. borealis, whereas it was dependant on biomass in C. crassa. Thalli had dichotomous branches with adaxial branchlets. The statistics showed that the seasonal change in morphology of C. borealis was significantly different from that of C. crassa in seven qualitative characters and five quantitative characters (p < 0.001), although six quantitative features including tetrasporangial size were similar in both species. The morphological difference between the two species may be due to the annual variation of branchlet number and the variance of branch subangle.

• The Bulletin of The Korean Astronomical Society
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• v.35 no.1
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• pp.49.2-49.2
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• 2010

We have presented the evolutionary status of four detached double line spectroscopic eclipsing binaries which are CD Tau, CM Lac, HS Hya and ZZ Boo because the component stars of these binary systems still act as a single star. We determined the absolute dimensions of these binary systems using photometric and spectroscopic solutions from analysis of light curves and radial velocity curves. Using the luminosities, effective temperatures and masses we choose evolutionary tracks of these binary systems. Finally we obtained ages and metallicity of the stars. We found that CM Lac and HS Hya are very young stars and their ages are in range of 0.15-1.05 and 0.22-1.14 Gyrs. For CD Tau and ZZ Boo, they are older than the others and their age in range of 1.95-2.95 and 1.48-1.73 Gyrs.

• Journal of Korean Medicine for Obesity Research
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• v.15 no.2
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• pp.149-152
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• 2015

The aim of this study is to report clinical progresses on localized fat. We devised the method of treat localized fat using acupotomy with selective cryolysis. We selected 4 subjects among the patients who maintained their body weight (within 5%) to minimize effects of losing weight. We practiced acupotomy with selective cryolysis therapy on 4 lesion of abdominal fat, 2 lesion of upper arm fat, 5 times for 2 month. All subjects had loss of abdominal circumference, and 1 subject had significantly loss of upper arm circumference. And there was no adverse effects. It shows that method of using acupotomy with selective cryolysis may be effective on localized fat.

• Korean Journal of Child Studies
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• v.21 no.3
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• pp.25-40
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• 2000

This study investigated the development of infant behaviors and maternal scaffolding in mother-infant games. Subjects were 60 mothers and their 9-, 12-, 15- and 18-month infants, 15 dyads in each age group. Mother-infant interaction was videotaped in the laboratory as they played peek-a-boo and a ball game in 2 sessions. Infant game behaviors were classified by the Rome-Flanders, Cossette, Ricard and $D{\acute{e}}carie$(1995) list, and maternal game behaviors were classified by the Hodapp, Goldfield & Boyatzis(1984) list. Data were analyzed by one-way ANOVA, two-way ANOVA with repeated measures, sequential analysis and Z test as well as qualitative analysis. Results showed that infants played an increasingly active role with age. Infants mastered the ball game at earlier age than peek-a-boo. Mothers scaffolded infant behaviors in various ways. The amount of maternal game behavior varied by type of game.

• Bulletin of the Korean Space Science Society
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• 2010.04a
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• pp.32.3-32.3
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• 2010

We have analyzed times of minima for six eclipsing binary systems which show asymmetric light curves. We found that five binary systems show period decrease and one system shows cyclic period variation. Three asymmetric light curves (SV Cen, RT Scl and VW Boo) are due to hot spot caused by mass transfer. Other three asymmetric light curves (AD Phe,, EZ Hya and TY Boo) are due to cool spot on the cooler component caused by magnetic activities. We also obtain absolute dimensions from photometric solution and spectroscopic solution by analyzing their light curves and radial velocity curves, collected from literatures, using 2007 version Wilson and Devinney computer code.

• 한국가시화정보학회:학술대회논문집
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• 2002.11a
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• pp.27-30
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• 2002

An experimental study is performed to investigate the characteristics of near wake behind a circular cylinder with serrated fins using the constant temperature anemometer and through flow visualization. Previous report(Boo at al., 2001) shows that there are three different modes in vortex shedding behavior. This paper is focused on the identification of the physical reasons why the difference is occured in vortex shedding. The through flow velocity crossing fins decreases as increasing fin height and decreasing fin pitch mainly due to the flow resistence. Vortex shedding is affected strongly by velocity distribution around fin tube, especially by the velocity gradient. The velocity distribution at X/d=0.0 has lower gradient with increasing freestream velocity and fin height and decreasing fin pitch. Those differences in velocity gradients generate different vortex shedding mechanism.