http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Kang Il Lim ),( Soung Yob Rhi ) 한국운동영양학회 2014 Physical Activity and Nutrition (Phys Act Nutr) Vol.18 No.2
Kang Il Lim and Soung Yob Rhi. The effects of landed and aquatic treadmill walking at moderate intensity on heart rate, energyexpenditure and catecholamine. JENB., Vol. 18, No. 2, pp.197-204, 2014 [Purpose] The present study was to examine whetheror not the appropriate exercise intensity of water-walking could be accurately prescribed by land-based walking speed. [Methods]Using a crossover design, nine healthy male college students completed bouts of walking for thirty minutes at 100m/min, 50m/min,respectively, on land and water treadmills. Heart rate (HR), ratings of perceived exertion (RPE), energy expenditure, blood lacticacid and catecholamine concentration were measured. Two-way repeated measured ANOVA was used with the SPSS programfor data analysis. [Results]HR (P < 0.001), RPE (P < 0.001), energy expenditure (P < 0.001), blood lactic acid (P < 0.001) andepinephrine concentration (P < 0.05) were significantly increased during walking both in water and on land. The change of HRwas significantly lower at 50min/m in water than 100min/m on land (P < 0.01). There were no significant interaction effects forRPE, energy expenditure, blood lactic acid and catecholamine concentration, but these variables were slightly lower in water thanon land. These results indicated that the use of land walking speed-based prescriptive norms would underestimate the physiologicalcost in water walking at the moderate intensity. [Conclusion] Therefore, approximately two-half of the speed would be neededto walk in water in order to obtain the same level of physiological load as during treadmill walking at the moderate intensity. [Keywords]Aquatic walking, Heart rate, Energy expenditure, Catecholamine
Experimental Validation of Two Simulation Models for Two-Phase Loop Thermosyphons
Rhi, Seok-Ho The Society of Air-Conditioning and Refrigerating 2003 International Journal Of Air-Conditioning and Refr Vol.11 No.4
Five two-phase closed loop thermosyphons (TLTs) specially designed and constructed for the present study are one small scale loop, two medium scale loops (MSLI and MSLII) and two large scale loops (LSLI and LSLII). Two simulation models based on thermal resistance network, lumped and sectorial, are presented. In the Lumped model, the evaporator section is dealt as one lumped boiling section. Whereas, in the Sectorial model, all possible phenomena which would occur in the evaporator section due to the two-phase boiling process are considered in detail. Flow regimes, the flow transitions between flow regimes and other two-phase parameters involved in two-phase flows are carefully analyzed. In the present study, the results of two different simulation models are compared with experimental results. The comparisons showed that the simulation results by the Lumped model and by the Sectorial model did not show any partiality for the model used for the simulation. The simulation results according to the correlations show the various results in the large different range.
Instability of a Two-Phase Loop Thermosyphon
Rhi, Seok-Ho The Korean Society of Mechanical Engineers 2002 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.16 No.7
The instability of two-phase loop thermosyphons was investigated experimentally and analytically. Three orifice type inserts were used to study the effect of change in the pressure drop in the flow channel of the TLT on the flow instability and temperature fluctuation. It is observed that a decrease in the size of the orifice insert from 3.7 mm (no insert) to 0.71 mm drastically reduced the fluctuation of the temperature, especially at the evaporator section of the TLT. With the orifice type insert of 0.71 mm for the TLT, the overall temperature fluctuation was almost completely eliminated, especially at higher power input to the TLT The analysis based on the Kelvin-Helmholtz instability theory seems to predict reasonable well the loop stability state of the TLT with experimentally determined constant factors.
A Method of Image Searching for Consumer Electronics Product
Rhi, Joo Myung 인제대학교 1998 仁濟論叢 Vol.14 No.2
The image aspect of designing has been discussed as an important point for the product success. It seems more important for consumer electronics product due to the nature of the product, which has the black box characteristics on consumer's market. It's, however, very well known 'wicked' problem for designers still. This report aims to find another solution for the problem. Image is a kind of communication medium between the user and the product. Based on this concept, 5 factors should be considered when they search for the image of a product was discussed. The factors are cultural change, target user's life style change, product category image, competitor's image, and the company's PI (Product Identity) Program. From the image searching with the 5 factors, the actual searching process is discussed. To integrate the searching result, design image specification is suggested as a tool. Then a form of design image specification for a subsidiary design firm in Dublin, is generated. In addition, the maintaining design image quality with the specification is discussed in terms of management of the design process. Finally, the result of the research was discussed with designers from a multi-national design firm, and the suggestion for the further study was made.
RHI Jae Young(李載榮),PARK Bong Soon(朴奉淳) 대한자원환경지질학회 1982 자원환경지질 Vol.15 No.1
Typical stratigraphic sequences of Paleozoic form the Baegunsan Syncline (equal to Hambaeg Syncline) and Taebaegsan Group is the basement in the southern part of Kangweon Province. Deformation pattern depends on their stratigraphic site and their internal properties. In the biotite schists and meta-sandstones of Pre-Cambrian sequences, flow folds and ptygmatic folds are developed, and high strain deformation is pervasive. Deformational patterns of Cambro-Ordovician are variable because of their various formations. Fracturing is pervasive in the Jangsan Quartzite and Daegi and Maggol Limestone. Welldeveloped slaty cleavage and angular folds of kink and chevron types are the prevailing structures of pelitic rocks. The most characteristic feature of limestone alternated with argillite is the “Compositional cleavage (Author’s proposal)” known as the “Worm-eatern” structures. It was known that this structures have a sedimentary origin. But their preferred orienation of long axis of erosional lime holes, originated from tectonic deformation of folding. And this structures have the same character as the axial plane cleavages. Fracturing and long wave concentric folds are dominant characters of the Upper Paleozic sequences. In this area, two folds are superimposed. Field studying and analysis of structures show that the cross-folds of NS-direction are pervasive and were deformed by the EW-directional Baegunsan Syncline. The cross-folding is the major and penetrative deformation and prior to Baegunsan Syncline.