• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2006.06b
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• pp.445-450
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• 2006

The stress and strain properties of KOCC were modified to improve the performance of KOCC as a packaging raw material. The refining consistency, refining degree and the grammage of handsheet were varied. The stress strain properties, tensile energy absorption were measured for prepared handsheets. The refining improved significantly the stress and strain properties of paper, especially at lower refining consistency. The increase of grammage also had contributed to improve the stress and strain of paper. It was also found that both refining and grammage contributed to the improvement of tensile energy absorption. However, it is strongly recommended to introduce the combination of refining consistency, refining degree and mechanical treatment.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.39 no.3
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• pp.24-29
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• 2007

The stress and strain properties of KOCC were modified to improve the performance of KOCC as a packaging raw material. The refining consistency, refining degree, blending conditions and the grammage of handsheet were varied. The stress-strain properties, tensile energy absorption were measured. The refining improved significantly the stress and strain properties of paper, especially at lower refining consistency. The increase of grammage also contributed to the improvement in the stress and strain of paper. It was also found that the refining, blending and grammage contributed to the increase of tensile energy absorption. However, it is strongly recommended to apply the combination of refining consistency, refining degree and mechanical treatment(blending).

• Journal of the Korean Home Economics Association
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• v.44 no.5 s.219
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• pp.9-19
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• 2006

The purpose of this research was to investigate factors related to the child care center director's transformational leadership and differences of the awareness about transformational leadership between child care center directors and teachers. A survey was conducted using the questionnaire developed by Lee suk-kyung (1997). Results of this research showed that type of child care center, number of children in the program, director's age, educational degree and years of career related to child care, affected the child care director's transformational leadership as recognized by themselves. From a teacher's point of view, director's transformational leadership was influenced by director's age, educational degree, and years of career related to child care. In addition, different level of awareness about director's transformational leadership between child care directors and teachers was found. Based on the result, a program to enhance director's leadership is strongly needed.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.33 no.4
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• pp.1-6
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• 2001

Today's paper industry tries to use greater amount of high yield pulp and recycled fiber and to close mill water system, which results in higher fines content and buildup of organic and inorganic contaminants in white water system. Researches are being focused to develop chemical additives that provide good retention and drainage in a closed papermaking system. A microparticle retention system consisted of cationic guar gum and anionic colloidal silica so has been developed to meet the requirements for improving machine speed and product quality. The objective of this investigation was to determine the effects of the degree of cationic guar gums, charge density and structure of anionic colloidal silica sols, and the degree of system closure on the performances of this microparticle retention system. Cationic guar gums and anionic colloidal silica sols with higher charge densities showed better retention performance. Particularly, wider maximum in retention was obtained when structure colloidal silica was used suggesting as mechanism of microparticle bridging is functioning in this system.

• Journal of the Korean Home Economics Association
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• v.34 no.4
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• pp.1-19
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• 1996

The purpose of this study is to clarify the tendency of impulse buying behavior and the consumer psychological characteristic factors which arouse impulse purchase and the difference in exploratory behavior according to the degree of impulse buying behaviors. For this purpose existing studies on impulse buying behaviors, consumer stimulation levels and exploratory behaviors were theoretically reviewed. And field survey was carried out for this study; 353 women impulse consumers were selected by convenience sampling method. The summarized main results of this study are as follows; 1) In relative perspectives, the consumers who has high degree of impulse buying behavior was favor of sensory buying behavior but, was lack of planned and rational buying behaviro. 2) The optimal stimulation level of high-impulse consumers is higher than that of low-impulse consumers. Especially, optimal stimulation level of impulse consumers is significantly higher than their life-style stimulation level. This means that impulse consumers are consider to a stimulation seeker. 3) The high-impulse consumers have high exploration through shopping, high information seeking behavior, high interpersonal communication level, high risk taking behavior and particulary high sensory exploratory patterns in purchase exploratory behaviors than that of low-impulse consumers.

• Journal of the Korean housing association
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• v.18 no.4
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• pp.89-96
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• 2007

This study was intended to examine the change in the perception of the professionals for the environment-friendly apartments. After result of implementing the question survey against the professionals two times, the degree of importance in the environment-friendly design elements didn't show any significant change. However, it showed the degree of maturity on the concept of environment-friendly development is widely spreaded in terms of social, economic and environmental aspects. Based on the description of such results, the conclusion can be deduced as follow; 1) Presumably it would require 5 years for the diffusion of the concept of environment-friendly apartments and 10 years for the construction of developing its materialization and settlement respectively, 2) The proper density would be designed in $150{\sim}200%$ in view of the environmental and economic aspects. 3) It is necessary to change the existing system into the District Unit oriented planning & design method in order to apply the environmental design elements in smooth manner.

• Journal of the Korean Home Economics Association
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• v.36 no.7
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• pp.97-110
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• 1998

The purpose of this study was to examine the use and purchase patterns, design and satisfaction degree, and desired performance of boardsailing suits. The subjects were 266 boardsailing athletes and lovers. The results were as follows; (1) The demand of boardsailing suits for spring and autumn was larger than that for the other seasons. (2) The order of influencing power in purchasing boardsailing suits was fitness, textile material, design, color, cost, and brand. (3) Preference of design was one piece style and preference of pattern was character pattern. Additionally, the study on Korean patterns was demanded for international games like Olympics. (4) The order of satisfaction degree of currently used boardsailing suits was activity, size, design, material, sewing, color, pattern, and ease of wearing and taking off. (5) For the performance of boardsailing suits materials, the estimated values of absorbency, water repellency, dye fastness, biological resistance, weight, handle, air permeability, durability, and elasticity were much lower than the importance values.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.29 no.3
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• pp.51-59
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• 1997

Dissolving pulp is a low yield(30∼35%) bleached chemical pulp that has a high cellulose content (95% or higher) suitable for use in cellulose derivatives such as rayon, cellulose acetate. This research was studied for dissolving pulp preparation as the raw material of viscose rayon from commertial pulps. (TMP, CP, DIP) In the change of pulp(cellulose) characteristics after sodium hypochlorite and solvolysis treatment. the following results were obtained In the case of sodium hypochlorite pretreatment, we have obtained pulp that high purity cellulose, but degree of polymerization was inclined to decrease less than 170∼240. Comparing sodium hypochlorite pretreatment and solvolysis pretreatment, solvolysis pretreatment is superior to sodium hypochlorite process for making dissolving pulp. We think that the low degree of polymerization of cellulose because of increasing degradation of cellulose during delignification treatment.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.34 no.1
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• pp.1-6
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• 2002

Alkaline sizing characteristics of TMP (thermomechanical pulp) handsheets with AKD (alkylketene dimer) were studied under various conditions. The sizing degree of TMP handsheet was much lower than that of chemical pulp. Especially, the sized TMP handsheet dried at $20^{\circ}C$ showed no sizing features, but sizing degree of TMP handsheet was clearly Increased by heat treatment at $105^{\circ}C$. The sizing effect of TMP was also improved by addition of $CaCO_3$, but it was not affected by pH. Therefore, sizing effect of TMP with AKD can be improved to some extent by controlling stock condition and heat treatment of handsheet.

• Journal of the Korean Home Economics Association
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• v.17 no.4
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• pp.107-115
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• 1979

A statistical study was carried out in order to find out the correlation between various factors affecting the attitude of young college girls to their marriages, such as their environment and the degree of their parent's satisfaction in their marriage life. For the study, 264 college girls were sampled at random from the population of college girls in Daejeon area. The instruments used in the research are questioning paper , which the investigators made. Following correlations were found as a result. (1) a significant correlation between the birth order of girls and those of male mate and earlier marriage in the bigger residential district. (2) Preferrence in larger family planning tendency in the group of girls from large family and vice versa in the group of girls little educated mothers. (3) More traditional attitude to future marriage planning in the group of girls of lower birth order and with better economical background. (4)There were no significant correlations between the degree of their parent's satisfaction and their marriage life planning.