• Proceedings of the Korean Institute of Interior Design Conference
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• 1999.04a
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• pp.65-70
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• 1999

This study is written with a purpose to force the changes of way of life in the 21st century through recognizing an environment based on a correct ecological world-view, and to create environmental design of seeing the nature and humans as one organism. This study is focused especially in environmental design and written generally based on urban ecology, human ecology, cultural ecology, and plant ecology with this multi-interdisciplanary approach. To understand meaning of ecosystem by considering the theory of ecology for ecological approach of the environmental design, and to grope for possibility of applying environmental design by considering what to analyze and how to differenciate concept for ecological environmental plan from the mechanical design. Through this study it was realized that the ecological design starts from the recognition of seeing the humans and nature as a one and form being aware of significance of all the living things in our surrounding environment.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.20 no.3
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• pp.33-39
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• 2021

This paper presents an optimized design technique that can satisfy the design input values. Numerical analysis was performed on the slope correction device based on the first design. The stress distribution was confirmed when the load specified as the design input value was applied, and design changes were introduced for parts for which the design safety factor did not meet the standard to ensure rigidity. And the results were verified through FEA.

• Journal of the Society of Naval Architects of Korea
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• v.29 no.1
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• pp.143-157
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• 1992

For the design of structural systems having the prescribed or optimum dynamic characteristics, some design changes of the initially designed system are required. In these cases, if the sensitivity analysis which can predict the changes of dynamic characteristics due to the changes of design variables is applied, the design changes can be carried out rationally and very efficiently. For many structural systems, it is well known that the analysis by the transfer matrix method(TMM) and the combined finite element-transfer matrix method(FETMM) is more efficient than the analysis by the finite element method. However, most known studies on the sensitivity analysis of structural systems premise using the finite element method. In this paper, the sensitivity analysis methods by the TMM and the FETMM are presented and some numerical investigations on the beam-column with elastically restrained ends and intermediate contraints and the stiffened plate having subsystems are carried out. The results of the numerical examples show good accuracy and computational efficiency of the presented methods, and show that the application of sensitivity analysis in the dynamic characteristic reanalysis give good results within the practically changeable range of design variables.

• Journal of the Earthquake Engineering Society of Korea
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• v.12 no.1
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• pp.67-77
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• 2008

Seismic isolation has been studied continuously as a solution of the seismic engineering to reduce the sectional forces and the damages of structures caused by earthquakes. To certify reliable design and installation of the seismic isolation systems, seismic isolation bearings should be fabricated under well planned quality control process, and proper evaluation tests for their seismic performance should be followed. In this study, shear property evaluation tests for the lead rubber bearings(LRB) and the rubber bearings(RB) were implemented and the temperature dependency tests were also implemented to evaluate the changes of shear properties according to the changes of temperature. After evaluation tests, the measured shear properties were compared to their design values and their deviation was analyzed comparing with the allowable error ranges specified in Highway Bridge Design Specifications. These results showed that a considerable number of isolation bearings have so large deviations from their design values that their error ranges were over or very close to the allowable ranges. And the test results for temperature dependency showed that the shear properties of isolation bearings would be changed in great degree by the change of temperature during their service period. If these two types of changes in their shear properties are superposed, it would possible that the changes of shear properties from their original design values are over than 50%.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.147-161
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• 2022

This study examined changes in the ecological characteristics and design characteristics of Ban's exhibition space in three representative temporary exhibition halls and three permanent exhibition halls designed by Ban Shigeru since 2000. Through the investigation of the concepts and characteristics of ecological architecture, the design characteristics of exhibition space, the analysis framework of the design characteristics of exhibition space and the design elements of ecological architecture is obtained. The analysis results show that there are big changes between the temporary exhibition space and the permanent exhibition space in terms of building scale, space composition, function, materials and technology. On the one hand, the temporary exhibition space used recyclable materials, such as paper tubes, containers to be assembled on site into a single-layer space focused on display. The assembly method was simple and the construction period was short. After the exhibition, the exhibition space were dismantled. The materials were either transported to the next display site or recycled and reused. On the other hand, the permanent exhibition space used reinforced concrete as the main structure, and used a large amount of wood and glass materials to construct a multi-layered composite cultural space that separated the exhibition space and the leisure space. In terms of ecological characteristics, the building materials of the temporary exhibition space were recycled and no industrial wastes were generated after the demolition. The permanent exhibition hall uses eco-friendly wood for the roof and walls, so it is easy to replace and repair. Both types of exhibition halls are changing ecological architecture in a more sustainable direction by saving resources and energy through natural light and ventilation.

• Korean Journal of Childcare and Education
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• v.15 no.6
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• pp.59-75
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• 2019

Objective: The purpose of the present study was to examine the changes in the body perception of young children using a short-term longitudinal design, then to investigate the factors related to their body perception. Methods: Participants were 65 preschool children and their mothers that were recruited from five institutions. An 11-month, two-time point longitudinal design was used in which children were interviewed individually to examine the changes in body perception. At the second time point, children were assessed with an additional measure to investigate self-esteem, and their mothers also reported on maternal factors and children's media experience through a questionnaire. Data were analyzed by paired t-test, independent t-test, correlations and ANOVA. Results: The results showed a significant decline of children's negative body perception over time. Children's media experience was positively correlated with negative body perception. Mothers whose children showed higher body mass index (BMI) sent more verbal messages about their child's weight reduction. In addition, children's negative body perception was positively correlated with physical self-esteem. Finally, there was a significant difference in only the physical self-esteem according to the level of children's body perception. Conclusion/Implications: The findings would suggest theoretical and practical implications to support intervention and education programs to improve the body image of young children.

• Journal of the Korean Society of Costume
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• v.64 no.1
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• pp.89-105
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• 2014

This study researched the changes in everyday wear in China since the mid-20th century. The study was conducted by interviewing 13 Chinese persons who were familiar with the public awareness and donning practices of the Chinese from 1949 to now, and the results were analyzed through categorical analysis and subject analysis. First of all, due to the influences of Zhongshan-zhuang, Liening-zhuang and Bulaji, political characteristics were represented the most during the reconstruction time, and during this time, Jieyueling also became famous. Second, during the period of the Cultural Revolution, the government used many mechanisms to control people's thought, so Junfu/Junbianfu and sailor shirt were the most common clothing. Third, information from the West began to enter the Chinese market and it started to influence and change the Chinese thinking. Suit, bat wing sleeves, colorful skirt, flares and jeans became more and more popular in the reform and open times. Fourth, during the personality expression time, people not only copied fashion icons' styles, but also created new styles like sexy, cute, ethnic, K-pop, street, and DIY style, in order to show their personality. Finally, during these 60 years, the changes of Chinese everyday wear were characterized by de-politicization, ready-made, diversification and individualization.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.22 no.3
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• pp.447-451
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• 2013

In this study, a shock absorber whose orifice area changes according to the oil pressure inside the absorber is developed. The orifice widens and narrows when the oil pressure is high and low, respectively; thus, the orifice area changes according to the oil pressure, in other words, according to the extension/compression velocity. It is well known that the damping force can be expressed as $C{\cdot}v^{\alpha}$. For fluid film damping, the force is proportional to velocity, i.e., ${\alpha}=1$, and for orifice damping, it is proportional to the square of velocity, i.e., ${\alpha}=2$. The shock absorber proposed in this paper can exhibit different relationships between the damping force and velocity because the orifice area changes according to the induced oil pressure. The motivation of this study is to develop a method for designing a shock absorber with desired values of C and ${\alpha}$ which is not just 1 or 2. Theoretical and experimental studies have been conducted to verify the damping characteristics of the shock absorber. The effect of some major design parameters on damping characteristics has been also examined to relate the design parameters to the damping characteristics.

• Journal of the Korea Fashion and Costume Design Association
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• v.6 no.2
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• pp.35-47
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• 2004

Hair style is an expression of beauty for individuals and at the same time a clear social representation. It may be regarded as a means of knowing social recognition about social values and groups of the moment. The hair style clearly discriminated so-called the new woman, emerged during Chosun's modernization, and the old woman. Thus the purpose of this study is to examine changes in social recognition about the behavioral style of the new woman by relating them with women' s movements and with changes in female education policies. Results of the study can be described as follows. First, the new women in the 1920s were evaluated positive as those who were leading struggles against Japan and enlightenment campaigns. But between the 1920s and the 1930s, those women were thought to be negative in that they were appearance-oriented, extravagant and sticking themselves to reality. Second, how a variety of social figures recognized short-hair was determined here through reviewing the mass media of the 1920s. At that time, some men were positive about short-hair like feminists while others denied the convenience of the hair style in life and were negative about the new women's individualism and pursuance of luxurious appearance. Third, there were both positive and negative social recognitions about short-hair in the 1930s. which were supported by the mass media of that time.

• Korean Journal of Health Education and Promotion
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• v.16 no.1
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• pp.127-135
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• 1999

The purpose of this study was to verify the effects of the developed exercise prescription program by utilizing PRECEDE(Predisposing, Reinforcing, and Enabling Causes in Educational Diagnosis and Evaluation} model on adult's knowledge related to health, attitudes, behaviors and serum lipoprotein values. This study employed 20 males(40-47 yrs) without any apparent physical defects, who did not experience such physical activities. They were divided into experimental groups and control groups, each group consisted of 10 subjects who performed Jogging. The experimental design of the study utilized “two-way ANOVA Design” conducted by the repeated measurement two time(pre and post-test). As the results of the data, the conclusions were as follows: 1. There were statistically significant effects of the health module exposed to the experimental groups on the higher means of knowledge score in the experimental groups than those in the control groups. 2. There were statistically significant effects of the module exposed to the experimental groups on the positive changes of their attitudes. 3. There were significant changes on the behaviors of the health by doing the health program. Therefore the developed health program formed the improved knowledge about the health and the desirable attitudes and behaviors. 4. There were statistically significant effects of the exercise prescription program exposed to the experimental groups on the reduction of the resting heart rate and systolic blood pressure. 5. There were statistically significant effects of the exercise prescription program exposed to the experimental groups on the positive changes of their plasma TC / HDL-C ratio and triglycerides.