• Tribology and Lubricants
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• v.31 no.4
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• pp.170-176
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• 2015

As a continuation of Part I, which developed a design formula of the minimum corner radius (R_min) for restraining tribological failures, Part II investigates design parameters such as material properties and contact force. As design examples, Al 7075-T651, SST 304 and HT-9 are chosen for the materials and 1, 10 and 100 kN are used for the forces. The results show that the difference in R_min decreases as either the elastic modulus increases or the contact force decreases. Given the same material and force, the permissible R_min decreases as the flat region increases and vice versa. Because the R_min values obtained from the examples are very small, the dimensions of the corner radius normally designed in engineering structures are regarded acceptable. The von Mises stress evaluated for a typical example, which is far below the yield strength, confirms this interpretation. Nevertheless, the present work can provide a design criterion as well as a guideline for quality control in the manufacturing of, in particular, contact corners, which has not been attempted before to the best of the author’s knowledge. In addition, this paper considers the problem of a step that may be formed in the contact contour by using a similar approach. The result shows that no size of the step is permissible.

• Journal of the Korean Home Economics Association
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• v.31 no.4
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• pp.141-155
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• 1993

The purpose of this study is to investigate Korean youth's motivations for parenthood and concepts of parental role and to examine closely the relationship with the sociodemographic variables(age, sex, religious orientation, growth region, father's occupational level, parental education degree). the subjects are 465 students of the three universities in National Capital region. The data are collected by questionnair methods and analyzed by t-test, F-test, factor analysis. The major findings are as follows: 1) The motivations for parenthood are classified into five factors. These are acquisition of social status factor, continuation of self factor, achevement and creativity factor, tradition factor, primary group ties factor. The korean youth think the most of achievement and creativity factor among five motivation factors. 2) The korean students have somewhat stereo-typed concepts of parental role and place the stress on training the behaviors of the child and encouraging the development of the child. 3) The sociodemographic variables to have relationship with the motivations for parenthood are age, sex, growth region and father and mother's educational degrees. And the variables related with the concepts of parental role are sex, father's occupational level. 4) There are relationships between traditional role concepts of a father and motivation of acquisition of social status factor and tradition factor. And traditional role concepts of a mother are related with motivations of acquisition of social status factor and primary group ties factor among the motivations for parenthood.

• 대한공업교육학회지
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• v.30 no.2
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• pp.12-22
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• 2005

This study analyzes the requests by the people-in-charge in industries and presents methods to improve field practice systems for technical highschools. Requests from 43 industries in Korea were analyzed. The results about improvement methods for field practices are as follows: First of all, the study suggests the same educational curriculums and number of courses for the 10th grade (National Manditory and Basic Curriculum) and the 11th grade (Elective Program) both in general technical highschools and in "2+1 system" technical highschools. The school offers a dual program: completion and continuation curriculums. In the 12th grade, students choose their careers. Students can participate in field practice as a completion education. In other words, the same curriculums are operated in 10th and 11th grades for students who want to go to college and to get jobs. The different curriculum is arranged for the 12th grade. This system can allow flexibility in curriculum operation for students who want to change their careers or who drop in the middle of filed practice. Students who come back to schools in the middle of field practice are asked to complete technical courses and evaluated like in general technical highschools.

• Management & Information Systems Review
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• v.7
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• pp.227-245
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• 2001

The object that we have researched the design for a long life of product is to search for the method to cope with the various environment problems where our mankind is confronting in the field of Production Design. The environment problem on earth is affecting seriously the enterprise which produces the product, the user who consumes it and even the field of product design. Now we live our daily life with a lot of artifacts while the citification and modernization have been progressing around us. Especially, 20 century was the times of the highly advanced scientific civilization and industrialization. Therefore it affected decisively our life environment base nowadays. The result was that our human life became rich because of the advanced development of industry, productivity and distribution structure. On the other side, the industrial system in the period of these massive production and massive consuming is bearing various problems proportionally. Those are the depletion of resources and energy, earth environmental pollution and various kinds of waste. In addition, the material which cannot recycle is appearing at the large quantity. This is the actuality of now. Our subject is how product design will cope with it as counter measures and the subject is very important to our mankind and earth environment.

• Journal of Digital Convergence
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• v.17 no.7
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• pp.109-114
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• 2019

The purpose of this study is to analyze the phenomenon studies related to athletic continuity and school life satisfaction of the intellectually disabled students. According to the analysis, the integrated sports volleyball program has acquired athletic skills in the satisfaction of school life and maintained close friendship through cooperation. The participants of intellectually disabled students have been more flexible with the improvement of the physical education volleyball program, and they are affiliated with the school's cooperation, through a cooperative study. Therefore, through the integrated sports volleyball program, students with disabilities can overcome limitations and dissatisfaction with the athletic continuity and satisfaction of school life and achieve the integration they seek in the integrated education.

• Structural Engineering and Mechanics
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• v.85 no.2
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• pp.147-161
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• 2023

Based on the ideas of variational differential quadrature (VDQ) and finite element method (FEM), a numerical approach named as VDQFEM is applied herein to study the large deformations of plate-type structures under static loading with arbitrary shape hole made of functionally graded graphene platelet-reinforced composite (FG-GPLRC) in the context of higher-order shear deformation theory (HSDT). The material properties of composite are approximated based upon the modified Halpin-Tsai model and rule of mixture. Furthermore, various FG distribution patterns are considered along the thickness direction of plate for GPLs. Using novel vector/matrix relations, the governing equations are derived through a variational approach. The matricized formulation can be efficiently employed in the coding process of numerical methods. In VDQFEM, the space domain of structure is first transformed into a number of finite elements. Then, the VDQ discretization technique is implemented within each element. As the last step, the assemblage procedure is performed to derive the set of governing equations which is solved via the pseudo arc-length continuation algorithm. Also, since HSDT is used herein, the mixed formulation approach is proposed to accommodate the continuity of first-order derivatives on the common boundaries of elements. Rectangular and circular plates under various boundary conditions with circular/rectangular/elliptical cutout are selected to generate the numerical results. In the numerical examples, the effects of geometrical properties and reinforcement with GPL on the nonlinear maximum deflection-transverse load amplitude curve are studied.

• Journal of the Daesoon Academy of Sciences
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• v.19
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• pp.125-143
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• 2005

This study offers an analysis of how Protestant Christianity in South Korea incorporated many beliefs and practices of Korean traditional religions in order to make the new faith more appealing to the masses. The paper also examines the way in which specific Protestant doctrines and practices were modified or accentuated to suit the disposition of the Korean people. In agreement with Confucianism, for example, Protestant churches in general emphasized the values of diligence, self-cultivation, righteous living, and, most importantly, filial piety. By overtly and subtly permitting ancestral rites to be conducted by Christians, moreover, Protestant Christianity evaded successfully the potential alienation of the tradition-bound Koreans. From Buddhism, Protestant Christianity syncretized such elements as the daily dawn prayer and all-night prayer as well as the practices of baekilgido ("a hundred-day prayer") and chunilgido ("a thousand-day prayer"). Hundreds of prayer centers that exist deep in the mountains also manifest a Buddhist influence. Shamanistic influences are also evident in Korean Protestantism, replete with the latter's emphasis on this-worldly success (health, prosperity, long life, etc.), faith healing, and conceptualization of God as being merciful and generous. What all of this reveals is that Christian conversion in South Korea did not involve an exclusivistic change of religious affiliation, meaning that it did not require the repudiation of traditionally held beliefs. Instead, millions of South Koreans eagerly embraced Protestant Christianity precisely because the new faith was advanced as an extension or continuation of traditional religious practices.

• The Korean Journal of Food & Health Convergence
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• v.10 no.1
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• pp.7-15
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• 2024

The bakery cafe and dessert industry in Korea is expanding, but it requires continuous innovation to remain competitive and adaptable. Therefore, this study aims to examine the effect of five sense factors on customer satisfaction and relationship continuance intention in Korean dessert cafes. A survey was conducted among 200 consumers who had visited a Korean dessert cafe in Seoul and Gyeonggi Province. Regression analysis was conducted for hypothesis testing, and the research results are as follows. First, among the five sensory factors in Korean dessert cafes, gustatory, visual, and olfactory factors positively impacted customer satisfaction and relationship continuance intention. These results suggest that the taste and presentation of Korean desserts in cafes and the aroma of both the desserts and the café are essential. However, auditory and tactile factors did not impact customer satisfaction and intention to continue the relationship. Second, customer satisfaction improved the intention to continue the relationship. This finding suggests that improving customer satisfaction in Korean dessert cafes positively impacts maintaining customer loyalty. Therefore, operators of Korean dessert cafes should consider gustatory, visual, and olfactory aspects when developing dessert menus and planning the physical environment of their restaurants.

• Journal of Practical Agriculture & Fisheries Research
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• v.25 no.4
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• pp.103-110
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• 2024

This study was conducted to provide basic data to prepare a plan for establishing a horse riding competition system to expand the base of the horse industry. As a result of analyzing the factors and needs that affect participation in horse riding competitions among athletes participating in horse riding competitions, the following conclusions were obtained. First, for participants in equestrian competitions, competitions and games will be held in which even athletes with lower skills can participate, and measures will be taken to ensure that obstacle jumping and dressage can develop equally. Second, there is a need for a venue in the metropolitan area where national-scale equestrian competitions can be held. Third, the point system must be introduced to manage the history of participants in horseback riding competitions as well as to encourage continuous participation in competitions. In future research, it is necessary to seek the development of horse riding competitions by examining the size of the prize money, the continuation of competition participation, and the transformation into professional athletes in horse riding competitions.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.9
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• pp.1454-1469
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• 2010

Brands have their own life cycles and exert a great influence on the marketing activities of companies. This study examines the marketing activities according to a brand life cycle and measures the scope of their performances. The research divides a fashion brand life cycle into three stages through the analysis of secondary data, and validates the causal relationship between marketing activities, brand equity, and consumer behavior according to the brand life cycle. A total of 573 responses were analyzed through a factor analysis, path analysis, and paired t-test with SPSS 12.0. The results are as follows: According to the analysis of the relationship between marketing mix and brand equity, distribution strategies are effective at the introduction/growth stage and the continuation stage. Advertisement strategies should be a main focus at the maturity stage for brand awareness. Throughout all the stages, product strategies wield the greatest influence on the brand image. Among brand equity components, the brand image has an influence on consumer behavior at every stage of the cycle while the brand awareness has no significant effect on consumer behavior. The marketing mix component that has the greatest impact on consumer behavior is product. Contrary to general expectations, price has a negative or insignificant effect on consumer behavior at every stage of the cycle. The results illustrated in this study help to understand the life cycle of fashion brands and characteristics different from consumer goods. Thus, fashion companies should identify at which stage their brands are positioned and develop different strategies to fit each stage.