• Journal of the Korean Society of Tobacco Science
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• v.13 no.1
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• pp.13-18
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• 1991

This experiment carried out to review influence of relative humidity, temperature and net weight on cigarette hardness for the uniformal control of cigarette quality. Obtained results are as follows: 1. The difference in the cigarette physical properties of constant hardness control is considerably lower than that of constant net weight control. 2. Contribution rate for cigarette hardness is relative humidity > net weight > temperature. 3. The multiple regression equation of cigarette hardness related with relative humidity, temperature and net weight is calculated as follows.

• Korean Journal of Childcare and Education
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• v.18 no.6
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• pp.127-144
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• 2022

Objective: The purpose of this study was to examine the relative influences of senior elementary school children's communication level with their fathers and peer competence on their happiness. Methods: The subjects of this study were 310 fifth and sixth grade students attending elementary school in Jeollanam-do. They responded to the level of communication with their fathers, peer competence, and happiness. For the data, t-test, Pearson's correlation analysis, and hierarchical regression analysis were performed. Results: First, there were some statistically significant differences according to gender differences in self-esteem and a sub-factor of happiness and the differences according to grades in open-type communication and problem-type communication. Second, it was found that children's happiness was highly correlated with communication with their fathers and peer competence. Third, the factors having the greatest relative influence on overall happiness were in the order of peer competence, open-type communication, problem-type communication, and gender. The variables influencing and the order of relative influence differed according to sub-factors of happiness. Conclusion/Implications: The present study revealed that peer competence has a significant impact on children's happiness. The results of this study suggest that research and development of convergent programs that can improve communication with fathers, peer competence, and children's happiness are necessary.

• International Journal of Industrial Entomology and Biomaterials
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• v.17 no.2
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• pp.173-180
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• 2008

The influence of temperature and relative humidity in infection and cross-infection of Nosema bombycis and N. mylitta respectively in mulberry silkworm, Bombyx mori L. on larval mortality, multiplication of pathogens, larval weight and growth rate in three different seasons were studied. Seasons were selected in such condition, when very less fluctuations between minimum and maximum temperature and minimum and maximum relative humidity ($25{\sim}28^{\circ}C$ and $65{\sim}72%$ R.H) was observed i.e., season-1. Fluctuations between minimum and maximum temperature were less ($28.05{\sim}34.50^{\circ}C$) but R.H % was more ($55{\sim}81%$) in season-2. Fluctuations between minimum and maximum temperature and R.H % were more ($20.00{\sim}40.5^{\circ}C$ and $64.00{\sim}90.00%$) in season-3. Growth rate of microsporidian-infected silkworm is directly related to the prevailing temperature and relative humidity in silkworm. Silkworm can tolerate slight variation of temperature but slight variation of relative humidity disfavours the development of silkworm and favours the multiplication of pathogens.

• International Journal of Ocean System Engineering
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• v.4 no.1
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• pp.1-18
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• 2014

Heave plates have been widely used to enhance viscous damping and thus reduces the heave response of Spar platforms. Single heave plate attached to the keel of the Spar has been reported in literature (Tao and Cai 2004). The effect of double heave plates on hydrodynamic response in random waves has been investigated in this study. The influence of relative spacing $L_d/D_d$ ($D_d$-the diameter of the heave plate) on the hydrodynamic response in random waves has been simulated in wave basin experiments and numerical model. The experimental investigation has been carried out using 1:100 scale model of Spar with double heave plates in random waves for different relative spacing and varying wave period. The influence of relative spacing between the heave plates on the motion responses of Spar are evaluated and presented. Numerical investigation has been carried out to investigate effect of relative spacing on hydrodynamic characteristics such as heave added mass and hydrodynamic responses. The measured results were compared with those obtained from numerical simulation and found to be in good agreement. Experimental and numerical simulation shows that the damping coefficient and added mass does not increase for relative spacing of 0.4 and the effect greater than relative spacing on significant heave response is insignificant.

• Korean Journal of Child Studies
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• v.34 no.1
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• pp.123-140
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• 2013

The purpose of this study was to examine the effects of counting ability on young children's mathematical ability and mathematical learning potential. The subjects in this study were 75 young children of 4 & 5 years old who attended kindergartens and child care center in the city of B. They were evaluated in terms of counting ability, mathematical ability and mathematical learning potential(training and transfer) and the correlation between sub-factors and their relative influence on the partipants' mathematical ability was then analyzed. The findings of the study were as follows : First, there was a close correlation between the sub-factors of counting and those of mathematical ability. As a result of checking the relative influence of the sub-factors of counting on mathematical ability, reverse counting was revealed to have the largest impact on total mathematical ability scores and each sub-factors including algebra, number and calculation, geometry and measurement. Second, the results revealed a strong correlation between counting ability and mathematical learning ability. Regarding the size of the relative influence of the sub-factors of counting ability on training scores, reverse counting was found to be most influential, followed by continuous counting. While in relation to transfer scores, reverse counting was found to exert the greatest influence.

• Journal of Families and Better Life
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• v.20 no.5
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• pp.99-112
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• 2002

This study is aimed to investigate ethics cognition to information of youths who are main users of computers, but yet not built up the own ethics and the sense of value, as ethical problems are raised in information-oriented society. The research was focused on youths ethics cognition to information according to contact of multimedia pornography, surreptitious use of others and abusion of indecent languages in chatting. The survey was conducted to 520 students from middle and high schools in Jeju region and analyzed Probit Regression. The major results of this study are as follows; First, most of youths possess own-computers, and use Internet. Second, looking into experiencing or not according to sub-spheres of ethics cognition to information, the experience of contacting multimedia pornography was few. but the primary place of using it was a house. Most of youths approach multimedia pornography in awareness of a ban on youths' contact. The experience of surreptitious use of others was less than other spheres, and mainly only once. The number of youths who have an experience of abusing indecent languages was less than that of youths who don't have, but the frequency of was high when the youths have an experience. Third, the experience or no experience on each sub-sphere has a significant difference on personal-relative variables such as gender, age, education levels, number of siblings, academic records, personal expenses, relationship with friends. The experience or no experience on each sub-sphere has a meaningful influence upon family-relative variables such as father's education levels, Job, mother's age, education levels, employment, family type, monthly household expense. The experience or no experience on each sub-sphere has a meaningful influence upon PC-relative variables such as deviation experience in PC rooms, the experience of request for age confirmation(I.D. card), average use hour of PC rooms. The experience or no experience on each sub-sphere has a more meaningful influence on personal-relative variables and PC-relative variables than family-relative variables.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.05a
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• pp.1256-1259
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• 2006

The purpose of this study was to investigate the current status and influence factor in measuring the dynamic stiffness of damping materials. The property of the dynamic stiffness of damping materials was tested and analysed in condition such as the size of test samples and the change of relative humidity in heating chamber. Test results showed that the dynamic stiffness of after-heating was lower than that of before-heating in most samples and the change of relative humidity in heating chamber got little influence of the dynamic stiffness. The resonant frequency of test sample decreased $2{\sim}7Hz$ as the decrease of the size of sample. Because it was increased that total mass per unit area of sample, the change of dynamic stiffness had little influence.

• Geomechanics and Engineering
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• v.36 no.2
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• pp.167-181
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• 2024

The soil-structure relative stiffness is a key factor affecting the seismic response of underground structures. It is of great significance to study the soil-structure relative stiffness for the soil-structure interaction and the seismic disaster reduction of subway stations. In this paper, the dynamic shear modulus ratio and damping ratio of an inhomogeneous soft soil site under different buried depths which were obtained by a one-dimensional equivalent linearization site response analysis were used as the input parameters in a 2D finite element model. A visco-elasto-plastic constitutive model based on the Mohr-Coulomb shear failure criterion combined with stiffness degradation was used to describe the plastic behavior of soil. The damage plasticity model was used to simulate the plastic behavior of concrete. The horizontal and vertical relative stiffness ratios of soil and structure were defined to study the influence of relative stiffness on the seismic response of subway stations in inhomogeneous soft soil. It is found that the compression damage to the middle columns of a subway station with a higher relative stiffness ratio is more serious while the tensile damage is slighter under the same earthquake motion. The relative stiffness has a significant influence on ground surface deformation, ground acceleration, and station structure deformation. However, the effect of the relative stiffness on the deformation of the bottom slab of the subway station is small. The research results can provide a reference for seismic fortification of subway stations in the soft soil area.

• Journal of Fisheries and Marine Sciences Education
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• v.25 no.1
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• pp.102-112
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• 2013

The purpose of this study was to investigate the influence of parent and peer attachment on school adjustment of 5th and 6th graders. In order to achieve this research purpose, following research questions were established. First, does attachment to parents influence on school adjustment of 5th and 6th graders? Second, does attachment to peers influence on school adjustment of 5th and 6th graders? Third, what are relative influences of parent and peer attachment on school adjustment of 5th and 6th graders? Three hundred eighty nine 5th and 6th graders in Busan participated in this study and completed Inventory of Parent and Peer Attachment and School Adjustment Scale. Collected data were analyzed using Two-way ANOVA and ${\eta}^2$. The major findings of this study were that parent attachment and peer attachment would significantly influence on school adjustment of 5th and 6th graders; Relative influence of Parent attachment and peer attachment would differ depending upon sub-factors of school adjustment. These results were discussed in terms of theoretical and practical implications. Finally, the limitations of this study were commented and suggestions for future research were made.

• International Commerce and Information Review
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• v.7 no.3
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• pp.247-268
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• 2005

In this study, I analysed the influence of the Korean Officially Supported Export Credit System upon Improvement upon Korean Export, investigated Korean Officially Supported Export Credit System focussing on the Short-term Export Loan System & Medium and Long-term Export Loan System in Korea Eximbank and sought for the measures overcoming problems therewith. In my research I started from a basic model analyzing Short-term Export Loan & Medium and Long-term Export Loan using added several variables that have effect on export such export relative price, world income and the amount of post-shipment credit bank guarantee. As a result, amount of Short-term Export Loan & Medium and Long-term Export Loan, world income and export relative price showed expected responses and Short-term Export Loan was significant. In case of amount of Short-term Export Loan System was statistical significance.