• Korean Journal of Health Education and Promotion
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• v.14 no.1
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• pp.115-124
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• 1997

The correlations among the fourteen items of the Bortner Scale are proved not to be very strong. In this case the method of flat summing of all the variables(Johnston and Schaper 1983) can be little valid because each variable has a statistically different weight. The Bortner Scale through the factor analysis of the German data has shown a diverse factor structure of Type A behavior that contains five sub-factors such as ‘speed and urgency’, ‘introversion’, ‘little listening to others’, ‘competitiveness and ambition’ and ‘mobilization’. And what is more, the Bortner Revised Scale through another factor analysis of the Korean data has revealed more complicated factor structure which is composed of eighteen sub-factors. In addition, only two of the German five sub-factors such as ‘speed and urgency’ and ‘mobilization’ are associated with cardiovascular disease. The association is stronger in infarction than in angina pectoris.

• Journal of Korean Public Health Nursing
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• v.31 no.1
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• pp.109-120
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• 2017

Purpose: This study examined the relationships among type D personality, self-efficacy, health promoting behaviors and mediating effects, as well as type D personality and health promoting behaviors of college students. Methods: From 10 May to 24 May 2013, a convenience sample of 223 subjects was recruited from a college in G city. Data analysis consisted of Pearson's correlation coefficient, followed by regression analysis. Results: The prevalence of type D personality was 21.4%. Type D individuals showed lower self-efficacy and interpersonal relationships than non-type D individuals. Type D personality (NA*SI) had signigicant negative correlations with self-efficacy and HPLP-II. Self-efficacy fully mediated the relationship between type D personality(NA*SI) and HPLP-II. Conclusion: One reason why type D individuals have maladaptive health behaviors is low self-efficacy.

• Journal of the Korean Home Economics Association
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• v.49 no.9
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• pp.47-58
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• 2011

This study investigated the relationships among mothers' playfulness, play beliefs and rearing attitude. The participants were 261 mothers with young children. PSA(Playfulness Scale for Adults), PPBS(Parent Play Beliefs Scale), MBRI(Maternal Behavior Research Instrument) were used to collect the data. The data were analyzed by t-test, Pearson's productive correlation analysis, and stepwise multiple regression analysis. The results were as follows: First, mothers' rearing attitude varied by mothers' age, employment status, and educational level. Second, there were significant correlations among mothers' playfulness, play beliefs, and rearing attitude. Third, mothers' playfulness and play beliefs were reliable predictors of rearing attitude.

• 한국전산유체공학회:학술대회논문집
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• 2004.10a
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• pp.141-144
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• 2004

An analysis procedure for the MCFC channel flow has been developed to predict the fuel cell performance. The channel formed by the uniformly distributed trapezoidal supports is approximated by the porous medium that yields the equivalent pressure drop. The Wavier-Stokes, energy, and species equations are solved to obtain the velocity, temperature and concentration fields for a local current density which is computed from electrochemical correlations. The fuel cell characteristics, such as the temperature, pressure, mole concentration, voltage and current density distributions, are presented and discussed.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.28 no.7
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• pp.885-895
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• 2004

Generally, automatic design is carried out with computer simulation and the simulation models are established by investigating the correlations between the simulation and real experiments. Therefore, the experiment results are utilized as complimentary data although they are considered to be precise. Orthogonal arrays have been adopted for discrete design. A method is proposed to directly exploit the experiment results in the design process with orthogonal arrays. Experiments are allocated to some rows of an orthogonal array and computer simulations are allocated to the others. A rule for the allocation is found to keep the orthogonality. Error analysis of the design results is performed. Mathematical examples are made to verify the validity of the proposed method. Error models are defined with the examples and the design solutions from the examples are discussed.

• Proceedings of the SAREK Conference
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• 2009.06a
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• pp.1283-1287
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• 2009

In this study, an analysis was performed on an evaporative steam generator (concentrator), where natural circulation convective boiling occurs on tube-side by condensing hot steam on shell-side. Existing correlations on two-phase pressure drop, boiling or condensation heat transfer were used for the analysis. The effect of number of tubes, tube length, etc. on thermal performance was investigated. Simulation results reveal that steam generation rate increases almost proportionally to the tube length, or number of tubes. It is also shown that water circulation rate decreases as tube length increases.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.15 no.7 s.100
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• pp.775-780
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• 2005

This study uses a characteristic function to explain correlations between the objective function and design variables. Analysis of means and table of orthogonal array were carried out. The change of shape of diaphragm, thickness of diaphragm and voice coil weight based on the table of orthogonal array Is made. Therefore this study carried to decide design variables for minimizing 1st natural frequency and maximizing 2nd natural frequency of diaphragm using design of experiments and characteristic function with constraints. we showed improved design variables.

• Journal of the Korean Society of Tobacco Science
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• v.4 no.1
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• pp.21-27
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• 1982

Six flue-cured cultivars of Nicotiana tabacum L., 15 possible $F_1$ hybrids and 15 $F_2$ populations among them, and 15 haploid populations of $F_1$ hybrids and 6 haploid from parents, were evaluated. The variances of general combining ability were predominant for all characters studied in $F_1$ hybrid and $F_2$ population, and in haploid populations of $F_1$ hybrids except leaf width, value and reducing sugar. There were significant correlations between generations in variances and ranks of parental GCA effects estimated from general combining ability analysis of $F_1,\;F_2$ and haploid generation of $F_1$ hybrids for yield, stem height, days to flower. leaves per plant, value and total alkaloids.

• Korean Journal of Child Studies
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• v.28 no.5
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• pp.253-267
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• 2007

This study examined the relationships between multiple intelligences as cognitive factors and affective factors of learning motivation and academic self-concept. The data were collected from 276 4th grade elementary school students and analyzed by correlation, multi-variate analysis, and step-wise multiple regression. Results were that (1) multiple intelligences, learning motivation, and academic self-concept had statistically significant correlations among themselves. Multi-variate analysis showed that intra-personal intelligence explained 58.6% of the linear combination of learning motivation and academic self-concept. (2) Intra-personal intelligence explained 29% to 58% of learning motivation and its sub-factors of achievement motivation, internal locus of control, self-efficacy, and self-regulation. (3) Intra-personal intelligence, logical-mathematical intelligence, musical intelligence, and inter-personal intelligence were explanatory variables for academic self-concept and its sub-factors.

• Journal of Industrial Technology
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• v.26 no.A
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• pp.109-117
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• 2006

This study is an numerical study of predicting the behavior of anchor embedded in weathered rocks, subjected to uplift loads, about ultimate pullout capacity and the failure mechanism. Factors influencing the behavior of anchors were investigated by reviewing the data about in-situ anchor tests performing numerical modelling with changing the bondage length of anchor, diameter of anchor body and diameter of tenden, and by Correlations between those factors were evaluated to apply them to predict the behavior of anchors. As results of numerical analysis, a linear relationship between bondage length, diameter of anchor body and diameter of tenden with ultimate pullout capacity was obtained on the one hand, from the result of numerical analysis changing the Young's modulus of weathered rock, this parameter was found to inflence to load-displacement and ultimate pullout capacity within the range of 10%, which was mot so significant to affect.