• Title/Summary/Keyword: $R^2$ value

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Relationship between Health Promotion Behavior and Marriage Value View

  • Kim, Jungae;Seo, Eunhui
    • International Journal of Advanced Culture Technology
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    • v.8 no.3
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    • pp.10-17
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    • 2020
  • This study was cross sectional descriptive survey study to analysis the relationship between marriage value view and health promotion behavior among university students. Questionnaires from those who voluntary agreed to the study were collected online, and the collection period was from May 20, 2020 to June 10, 2020. Research tools for analyzing marriage value view was used by RR lee, and health promotion behavior research tools was developed by Walker., The data analysis was performed using SPSS 18.0 as frequency, Pearson correlation, t-test, and Multiple regression analysis. According to the analysis, women had high passive (p<0.05) and exclusive (p<0.01) marriage value view, while men had high active (p<0.01) and instrumental (p<0.05) marriage value view. According to the analysis, it turns out that people who value interpersonal relationships during health promotion have a positive effect on romantic (t=2.383, R2=.257, p=.019) and instrumental (t=2.201, R2=.120, p=.030) marriage value view. Hygiene has been appeared to affect Passive marriage value view (t=3.001, R2=.111, p=.003) and Exclusive marriage value view (t=3.765, R2=.122, p=.000). Nutrition has been appeared to affect conservative marriage value view (t=2.086, R2=.118, p=0.039). Exercise has been appeared to affect conservative marriage value view (t=2.456, R2=.118, p=0.015) and active marriage value view (t=2.261, R2=.168, p=0.025). Through this study, in order to increase for the desire of marriage, marriage values need to be organized differently between men and women in marriage value programs and it suggested that health promotion behavior be included in programs that enhance the value of marriage.

Evaluation of Reproducibility According to Variation of Coil Channel in Quantitative Evaluation Using Synthetic MR (Synthetic MR을 이용한 정량적 평가에서 Coil channel 수 변화에 따른 재현성 평가)

  • Kwon, Soon-Yong;Kim, Seong-Ho
    • Journal of the Korean Society of Radiology
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    • v.11 no.5
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    • pp.343-351
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    • 2017
  • T1, T2 relaxation time and relaxation rates were measured and analyzed according to the change of RF coil channel number of MAGiC sequence. T1, T2, R1 and R2 maps were obtained by using MAGiC sequence with phantom (1.0, 0.6, 0.2, 0 mM) on the RF coil with channel number of 1, 8, 16 and 32 respectively. T1, T2, R1, R2 values and relaxation rates were measured for each channel number and concentration, and Relaxivity was calculated according to each concentration. T1, T2, R1, and R2 values were measured in each coil. There was no significant difference between T1 and R1 values (p> 0.05). However, T2 and R2 values were significantly different (p <0.05). In the post-analysis results, T2 value was significantly different from that measured on 1, 8, 16, and 32 channel coils (p <0.05) and There was no difference between 8, 16, and 32 channel coils (p> 0.05). The R2 value was significantly different from that measured on the 8, 16, and 32 channel coils in the 1 channel coil, and the results on the 8 channel coils and the 16 channel coils showed a significant difference (P <0.05). In conclusion, T1 and R1 values were not significantly different according to the number of channels in the coil, but T2 and R2 values were significantly different. Therefore, when quantitative measurement of T2 and R2 values using the MAGiC sequence, the same number of coils should be used for reproducibility.

Finite Element Analysis of the R-value of a 2-Layer Clad Steel (2층 클래드 강재의 유한요소해석을 이용한 이방성지수 계산)

  • Kim, J.G.;Park, B.H.;Kim, S.K.;Chin, K.G.;Kim, H.S.
    • Transactions of Materials Processing
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    • v.23 no.5
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    • pp.311-316
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    • 2014
  • In the current study, the R-value behavior of a two-layer clad steel was investigated using finite element analysis. Hill's 1948 anisotropic yield equation was employed to characterize the anisotropic behavior of the steel with different assumed properties: isotropic (R=1) and anisotropic (R=2). Experimental R-values were determined by measuring the width and thickness ratios of tensile specimens. Finite element analysis results demonstrate a difference in strain behavior in the width and the thickness directions of the clad steel. The R-value behavior depends on the fraction of the clad materials and total elongation.

Lagged Effects of R&D Investment on Corporate Market Value: Evidence from Manufacturing Firms Listed in Chinese Stock Markets

  • LEE, Jung Wan
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.8
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    • pp.69-76
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    • 2020
  • The study examines lagged economic effects of research and development (R&D) investment on the market value of manufacturing firms listed on the Shanghai Stock Exchange or the Shenzhen Stock Exchange in China. This study applies panel data analysis methods to address the following issues: 1) There might be an adjustment lag in the impact of R&D investment on corporate market value, and 2) Unobserved firm effects must be taken into account. The balanced panel data includes a total of 1,462 observations with 34 cross-sections of manufacturing firms listed on Chinese stock markets and with 27 time-specific quarterly periods from 2007 to 2017. The results indicate that the R&D investment of Chinese manufacturing firms tends to yield favorable market value of the firm with some adjustments to time. The results show that R&D investment exhibits a strong positive impact on their market value of manufacturing firms in Chinese stock markets. Moreover, R&D investment has a positive time-lag effect on the market value of the firm. Interestingly, the R&D investment of Chinese manufacturing firms generate a relatively constant positive effect on their market value, supporting the notion that the corresponding returns of R&D investment for such firms yield lagged but added market values.

Analysis of Feed Value and Usability of Soybean Varieties as Livestock Forage

  • Park, Myoung Ryoul;Seo, Min-Jung;Yun, Hong-Tae;Park, Chang-Hwan
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.37 no.2
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    • pp.116-124
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    • 2017
  • This experiment was conducted to evaluate feed value and usability of soybean varieties as livestock forage. In this study, three soybean cultivars, OT93-26, Geomjeongsaeol, and Pungwon, were harvested at R5 (beginning seed development)- and R6 (full seed)-reproductive stages for analyzing feed value of soybean. Days to R5 stage harvest of OT93-26 among the three soybean cultivars was 55 days and the shortest while Pungwon took 103 days to reach at R6 stage. The R6-harvested soybeans had higher dry matter (DM) yields and crude protein (CP) content than the R5-harvested. However, both DM and CP were the highest in the R6-harvested Geomjeongsaeol. Contents of neutral detergent fiber (NDF) and acid detergent fiber (ADF) of Pungwon harvested at R5 were the highest whereas the R6-harvested Geomjeongsaeol had the lowest. Digestible dry matter (DDM), dry matter intake (DMI), and relative feed value (RFV) of the R6-harvested Geomjeongsaeol and Pungwon were higher than those of the R5-harvested, but in case of OT93-26, those at R6 stage were low rather than those at R5 stage. However, soybean could be used as alternative forage with high feed value for livestock. Taken together, Geomjeongsaeol could be used for developing new forage soybean varieties with high feed value, and R6 would be the optimum harvesting stage for yield and quality of forage soybean.

A Study on the Influencing Factors of Intention of Revisit in Fast Food Restaurant Visitors (패스트푸드 레스토랑 이용객의 재방문 의도 영향 요인에 관한 연구)

  • Kim, Seog-Jun;Jeong, Kwang-Hyeon;Cho, Yong-Bum
    • Culinary science and hospitality research
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    • v.14 no.2
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    • pp.30-45
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    • 2008
  • The objective of this study is to examine how the factors influence each other by determining the appropriate measurement standard in fast food restaurants based on the evaluation of attributes, perceived pricing, value, satisfaction and intention of revisit, and present an effective marketing strategy for fast food restaurants based on the analytical results by patrons and market segmentations. The study surveyed 195 subjects and processed the result using SPSS for Win. V. 12.0. For statistical analysis, Frequency, Factor Analysis, Reliability Analysis, and Regression Analysis were put into operation. As a result of the Factor Analysis of the evaluation of attributes, 3 factors have been extracted. The results showed that restaurant attribution evaluation had a positive effect on the perceived value($R^2adj=0.357$, p=0.000), satisfaction($R^2adj=0.346$, p=0.000) and intent of revisiting($R^2adj=0.389$, p=0.000); perceived pricing had a positive affect on the perceived value($R^2adj=0.464$, p=0.000), satisfaction($R^2adj=0.113$, p=0.000) and intention of revisit($R^2adj=0.276$, p=0.000); perceived value had a positive affect on satis-faction($R^2adj=0.327$, p=0.000) and intention of revisit($R^2adj=0.515$, p=0.000); and satisfaction had a positive affect on intention of revisit($R^2adj=0.442$, p=0.000).

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Quality Characteristics of Morning Bread containing with Different Ratios of Rice and Brown Rice Flour (백미와 현미의 첨가비율을 달리하여 제조한 모닝빵의 품질 특성)

  • Joo, Shin-Youn;Choi, Hae-Yeon
    • The Korean Journal of Food And Nutrition
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    • v.30 no.6
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    • pp.1252-1259
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    • 2017
  • The objective of this study was to examine the effects of rice (R) and brown rice (BR) flour on the quality characteristics of morning bread. The quality characteristics of morning bread were determined by measuring the pH of the dough, dough raising power, moisture content, baking loss rate, specific volume, height, color value, texture analysis and sensory evaluations. The pH of the bread dough was highest on R1:BR2 and R0:BR3. The dough raising power and moisture content steadily and significantly decreased as the amount of added brown rice flour increased. The baking loss rate was highest on R3:BR0. The specific volume and height of morning bread were highest on R3:BR0 and R2:BR1. In color value, the L value decreased significantly as the amount of added brown rice flour increased, while a value and b value increased. The hardness, gumminess and chewiness of morning bread increased with an increase in brown rice flour. In consumer acceptability, R3:BR0, R2:BR1 and R1:BR2 showed the highest scores in all parameters. Characteristic intensity rating of roasted taste was lowest on R3:BR0. These results indicate that R2:BR1 showed similar quality characteristics as compared to morning bread without brown rice flour, with the optimal results appreciated with a 2:1 ratio of rice flour to brown rice flour.

Experimental Studies of the Blood Gas Transport during Normothermic Hemodilution Perfusion (상온하 혈액희석 체외순환에 있어서 혈액 GAS 동태에 관한 실험적 연구)

  • 박희철
    • Journal of Chest Surgery
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    • v.13 no.2
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    • pp.85-91
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    • 1980
  • Extracorporeal circulation by hemodilution technique has been currently used with its clinical safety and good peripheral tissue perfusion in open heart surgery. There is no doubt that $O_{2}$ carrying capacity of the blood is disturbed by decreased hemoglobin level resulting from hemodilution of the circulating blood. From the view point of the blood gas exchange, these experimental studies were undertaken to determined the sate limit of hemodilution in the condition of cardiopulmonary bypass with a constant perfusion flow rate. Twelve adult mongrel dogs weighing 10 to 13 Kg. were anesthetized with pentobarbital and then respiration was controlled with Harvard volume respirator using room air. The cardiopulmonary by pass was performed by use of Sarns heart lung machine (console 5000, 5 head and 2 roller pumps) and Travenol pediatric bubble oxygenator. The perfusion rate during bypass was maintained at a constant rate of 80 ml/min/Kg of body weight. The ratio of oxygen gas flow to blood flow was kept in 3 to 1 constantly. International hemodilution was attained by serial blood withdrawals and immediate infusion of equal volumes of diluants composed of Ringer's lactate, 5% dextrose in water and 25% mannitol solution, proportionally 60%, 30%, and 10%. Arterial and venous blood samples were obtained between 15 and 20 minutes following each hemodilution. Hematocrits and hemoglobin values, $PO_{2}$, $PCO_{2}$ and pH were measured. Oxygen and carbon dioxide contents oxygen consumption and carbon dioxide elimination were calculated groups according to different hematocrit values and the correlations were evaluated. Result were as follows. 1. the arterial $O_{2}$ tension and $O_{2}$ saturation were maintained at the physiological level irrespective of the hematocrit value. 2. The venous $O_{2}$ tension and $O_{2}$ saturation showed a tendency to decline with the decrease in hematocrit value and positive correlation between them (r = +0.49, r = +0.76), The mean values of venous $O_{2}$ tension and $O_{2}$ saturation, however, were not decreased when the hematocrit levels were lower than 20%. 3. The arterial $O_{2}$ content declined lineally in proportion to the fall of hematocrit level with a positive correlation between them (r = +0.95). 4. The venous $O_{2}$ contents were decreased gradually as the hematocrit value decreased with positive correlation between them ( r =+0.89). The trend of diminution of venous $O_{2}$ content, however, was became low according to progressive decrease of hematocrit level. 5. Systemic oxygen consumption was in higher range than $O_{2}$ requirement of basal metabolism when the hematocrit value was above 20%, but abruptly decreased when the hematocrit value became to below 20%. 6. The arterial $CO_{2}$ tension and $CO_{2}$ content showed trend of increasing with progressive decrease of hematocrit value but exhibited a rather broad range and there was no relationship between those value and the hematocrit value. 7. The venous $CO_{2}$ tension and $CO_{2}$ content have also no correlation with change of Ht. value but related directly to those value of arterial blood with positive correlation between them (r = +0.78, r = +0.95_. 8. A-V difference of $CO_{2}$ content and $CO_{2}$ elimination wasnot significantly influenced by Ht. value. From the results, we obtained that feasible limit in inteneional hemodilution is above the hematocrit value of 20% under the given experimental condition.

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Improvement of the repeatability and reproducibility of the meridian impedance measurement system MIR-2 (경락노선상 임피던스 측정기(MIR-2)의 측정신뢰도 개선방안 연구)

  • Yin, Chang-Shik;Lee, Hye-Jung;Kim, Jong-Yeol;Lee, Woo-Cheol
    • Korean Journal of Acupuncture
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    • v.24 no.4
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    • pp.55-67
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    • 2007
  • Objectives : The repeatability and reproducibility of MIR-2, a newly developed impedance measurement device (four electrode method) on skin are of the meridian system, is evaluated and a method to improve the reliability is discussed. Methods : Multiple gage R&R studies were conducted for the impedance measurements over bilateral KI3 acupoint in ten participants by three assessors using MIR-2 device. Gage R&R studies were repeated after controlling the acupoint locating method or one value correction by replacing one assessor's outlying value with an average of the other assessors' values to explore any feasibility of improvement of measurement reliability. Results : Controlling acupoint locating method and replacing one value with an average of other assessors' value led to improved variation metrics in a gage R&R study. Conclusions : Measurement reliability can be improved by controlling measurement procedures or by using repeated measurement method, which will facilitate development of clinically applicable measurement device with reliability.

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Analysis of R&D, Employment and Growth by Manufacturing Sector, Size and Export Value (기업 규모 및 수출입 수준에 따른 제조업종별 연구개발투자의 고용 및 성장성 분석)

  • Koo, Hoonyoung
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.42 no.2
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    • pp.62-68
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    • 2019
  • The growth and employment effects of R&D investment were analyzed according to business size, export value and manufacturing sectors so as to suggest improvement directions for effective industry policies. The effect of R&D investment was considered simultaneously from the two perspectives of growth and employment effect, and the causality analysis was carried out by using a path analysis. The result of the path analysis confirmed significant differences in the growth effect of R&D investment depending on business size. However, the effect of increasing employment was difficult to obtain statistically significant results for any various combinations of business size and export value. This is a mixture of directions for the effects of R&D investment on employment, which could be due to the failure to consider appropriate time lags between investment and effect. Efficiency analysis by industry sectors confirmed significant differences in efficiency depending on business size, but differences depending on export value were difficult to identify. In order to derive improvement policy by industry sector according to business size and export value, the direction of selective support policy and universal support policy was derived for six industry groups by combining the return to scale in the efficiency analysis and R&D concentration. Hirschman-Herfindahl index is used for calculating R&D concentration.