• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.15 no.1
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• pp.9-18
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• 2003

An experimental study was performed to investigate the turbulence intermittency measuring methods across the boundary layer in the transition region. A single type hot-wire probe was used to measure instantaneous streamwise velocities in laminar, transitional and turbulent boundary layer To estimate wall shear stresses on the flat plate, near wall mean velocities are applied to the principle of CPM. Distribution of intermittency factor is obtained by dual-slope method and compared to the results of four methods,$\'{u},\;\{U}$, TERA and M-TERA method. In these methods, M-TERA shows a good agreement in the near wall region. However, the result of M-TERA method shows that intermittency factor is underestimated in the outer part and outside of the boundary layer and the dimensional constant of M-TERA method should be changed appropriately depending on measuring point.

• Nuclear Engineering and Technology
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• v.44 no.1
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• pp.33-42
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• 2012

In the present study, CFD is employed to investigate phenomena occurring during a process of thermal stratification in U-bent pipes at transitional Reynolds number. URANS evaluation had been chosen for its low computational costs during transient analysis and for the evaluation of modeling performance in these conditions. Application of CFD at transitional Reynolds number and buoyancy driven flows indeed contains deeper uncertainties in relation to the range of applicability for hydrodynamic and thermal models. The methodology applied in the work points out, through validations with the basic problems constituting the complex stratified phenomenon, the applicability of the current turbulence modeling. Accurate predictions have been found in relation to transitional Reynolds number in bent pipes and region of stability induced by the gravitational field. On the other hand the defects introduced in the unstable region of the U bent pipe, are discussed in relation to the adopted modeling.

• Journal of Advanced Marine Engineering and Technology
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• v.22 no.6
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• pp.862-870
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• 1998

In this paper an experimental investigation of characteristics of developing transitional unsteady flows in a square-sectional 180。 curved duct are presented. The experimental study using air is carried out to measure axial velocity profiles secondary flow velocity profiles and entrance length by using Laser Do ppler Velocimeter(LDV) system. The flow development is found to depend upon Dean number dimensionless angular frequency velocity amplitude ration and cur-vature ratio. Of special interest is the secondary flow generated by centrifugal effects in the plane of the cross-section of the duct. The secondary flows are strong and complicate at entrance region. The entrance length of transitional pulsating flow is obtained to 120。 of bended angle of duct in this experimental conditions.

• Journal of Advanced Marine Engineering and Technology
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• v.23 no.1
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• pp.33-39
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• 1999

In this paper an experimenatal investigation of characteristics of developing ransitional steady flows in a square-sectional $180^{\circ}$ curved duct is presented, The experimental study is carried out to measure axial velocity profiles secondary flow velocity profiles and entrance length by using Laser Dopper Velocimeter(LDV) system. The flow development is found to depend upon Dean number and curvature ratio. Of special interest is the secondary flow generated by centrifugal effects in the plane of the cross-section of the duct. The secondary flows becomes strong from $120^{\circ}$ of bended angle on the duct. The entrance length of transitional steady flow is obtained to $120^{\circ}$ of bended angle of the duct in this experimental conditions.

• Journal of Veterinary Clinics
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• v.21 no.1
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• pp.62-65
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• 2004

A 13-year-old, male Maltese was refered to Veterinary Teaching Hospital of Konkuk University with inappropriate urination and hematuria. CBC, serum chemistry profile, urinalysis and urine culture were performed. Malignant cells were found in the urine sediment. Thoracic and abdominal radiography, retrograde positive-contrast cystography, retrograde double-contrast cystography, excretory urography, ultrasonography were performed. On the retrograde positive-contrast cystography examination, irregular filling defects were present on the left side of the cranial part of the bladder. Partial cystectomy performed and then medical therapy was conducted. On histopathological examinations, the lesion was confirmed as a transitional cell carcinoma of the urinary bladder.

• Journal of the Korean Society of Clothing and Textiles
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• v.27 no.1
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• pp.78-87
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• 2003

Based on the qualitative analysis regarding five dominant characteristics of fashion in the transitional period of the 21s1 century, subsequent quantitative analysis was conducted and the following results were obtained. First, it was found that 85% of the clothes analyzed showed these five characteristics. Secondly, among the five characteristics, the new-naturalism shows the most significant trend and neo-retro was also found as one of the leading features along with the new-naturalism in the transitional period of the 21 st century. However, the frequency of technicism is less than was expected. Thirdly, analysis of the distribution of fashion characteristics according to fashion designers and seasonal changes show that new-naturalism, neo-retro and hybrid spread relatively evenly among each designer. The quantitative study confined the results obtained through the qualitative study.

• Speech Sciences
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• v.13 no.4
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• pp.7-21
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• 2006

The intent of the present study is to investigate the acoustic properties of Korean /w/ in various phonological contexts, compare them with those of English /w/, and attempt to explain why English /w/'s are perceived differently by Korean speakers depending on the phonological contexts. Experiments 1 and 2 present the acoustic measure of F2 of Korean /w/ in various linguistic positions and show that unlike English /w/, Korean /w/ shows quite a strong coarticulation with the following vowel. Based on these experiments, Experiment 3 investigates why English /w/ is adapted differently into Korean. Specifically, it discusses why English /wain/ is adapted as /wain/ whereas English /twin/ is adapted into Korean as $/t^{h_i}win/$ with an extra vowel. This study argues that the different perception of English /w/ by Korean and English speakers is due to the different F2 transitional pattern of /w/ in Korean and English in various phonological contexts. It also argues that the F2 transitional pattern is an important factor in the perception of /w/.

• Journal of Fisheries and Marine Sciences Education
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• v.23 no.3
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• pp.533-548
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• 2011

This study examined the concern levels of primary school teachers regarding transitional education from early childhood phase to primary education. Concern Based Adoption Model (CBAM) instrument of Hall and Hord (2006) was used to survey 104 primary school teachers. The results indicated that the majority of respondents' concern level was at 'informational' level (stage 1). And first peak of concern level was at 'unconcerned' level (stage 0). The first-second peak analysis of stage 0 (unconcerned) group indicated that there were 5 types of groups and each had distinguished features. Finally there were statistical differences at the unconcerned stage by in-service training and career of the first-year class. A discussion of the limitations of this study and implications for teacher education programs and operational support systems were suggested.

• Journal of architectural history
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• v.1 no.1 s.1
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• pp.228-239
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• 1992

I'm going to endow with any characters to the mixed history of Korean Contemporary Architecture, and rearrange the relations between motive of transfer and the ideology which is concluded in expression through considering the transitional period which is based on the modernity, tradition and additional area such as ideology, politics, technology, literature, sculpture and painting etc. This abstract explain only characters of revivalism in Korean Contemporary Architecture. Revivalism have some complexed nationalistic leanings. Our transitional succession returned to revivalism that is limitted by its form. Of course, that is dued to complexed operating such as the Ideal Nationalism against the severance of our culture which had been done by Japan, the Superior Nationalism which is developed by antagonism of our own ideology was dued to dividing into sections of our own country, and the Resistant Nationalism against foreign culture.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2004.11a
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• pp.40-45
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• 2004

From 20th century, the perception of the problem on self-loss originated from philosophy and emerged in the pursuit of study on humans in real life, not from metaphysical questions. In particular, Phenomenon theory originating from Husserl has been unfolding around, above all, body concepts about human experiences. This is the part where Phenomenon theory finds its meaning as an analytical method of real space concepts. In addition, subjects' perception of situation is done through sense organs not only with sight but also with space-sensible aspects. And since these perceptions are done in consecutive and procedural times, they are done in the experience which shows transitional attributes. The experience elements of transitional senses in situation should be considered more about perception experience of human beings than other spaces, and classify into physical and program elements the introductory parts of eating and drinking spaces where the movements of active perceptionists and the flow of spaces can be felt. And this grants experimental, not usual, characteristics