• Transactions of the Korean Society of Mechanical Engineers B
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• v.23 no.6
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• pp.761-768
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• 1999

This paper is studied to find the optimum condition of double-inlet Sirocco fan installed in an indoor PAC for low noise operation by the Taguchi method. The goal of this study is to obtain the best combination of each control factor which results in a desired flowrate of Sirocco fan with minimum variability. In this study, the parameter design of the Taguchi method is adopted for robust design by the dynamic characteristic analysis using orthogonal arrays and S/N ratios. The flowrate measurements are conducted by using a multiple-nozzle-type fan tester according to the orthogonal array L9($3^4$). The results of this study can be summarized as follows ; (i) The optimum condition of control factor is a set of where A is an inner to outer diameter ratio($D_1/D_2$), B is a width to outer diameter ratio($L/D_2$), C is a blade attachment angle(${\theta}$) and D is a number of blade(Z), (ii) The flowrate under the optimum condition satisfies the equation $y=0.0384{\cdot}M$ where M is a signal factor, namely number of revolution. The flowrate performance improves about 7.3% more largely as compared with the current condition, which results in about 35RPM reduction of number of revolution for the target flowrate $18.5m^3/min$, and (iii) The sensitivity analysis shows that the major factors in contribution to flowrate performance are A, B, and D ; the percentage contributions of each control factor are 44.01%(Z), 26.77%($D_1/D_2$) and 20.42%($L/D_2$).

• Journal of Digital Convergence
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• v.18 no.4
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• pp.397-402
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• 2020

The purpose of this study is to identify the current state of coding education for children and to propose a new 'play-oriented' educational content to keep up with the problems of education in line with the revision process of the 4th Industrial Revolution. As a research method, we investigated and analyzed the case of the Korean early childhood coding education program, and then suggested the direction of the future infant coding education and suggested a new play area for children. Case analysis shows that current coding education places many restrictions on children's activities. So we propose a coding education space as a 'playing space' where children can actively play. Because the space is used, emotional education is possible because it can stimulate senses such as vision, touch and smell. In addition, this study is expected to cultivate not only spatial comprehension, but also imagination, creativity and cooperation. In future research, we will study the characteristics and technical process of children in-depth to help develop early childhood education.

• Journal of the Korea Convergence Society
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• v.10 no.8
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• pp.129-135
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• 2019

The purpose of this study is to propose the future development direction of the program which can apply the fusion education in the fourth industrial revolution era to the class and achieve creative problem solving ability. As a research method, we investigated cases of overseas coding education and conducted in - depth interviews with infants and parents. The results of the case study and in-depth interviews were as follows: First, the children were able to do their own preliminary and reviewing at home. Second, to provide an interesting play program for the young children to participate. Third, It is important that parents and children learn together. In future research, it is anticipated that there will be a positive effect by concrete proposal to secure the weaknesses and to combine existing coding education with interesting education in accordance with domestic characteristics.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2006.11a
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• pp.129-134
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• 2006

Before the information revolution, written languages used to be our major communication method, but with development of various types of mass media technologies the role of visual images are becoming more and more essential. Computer which is one of the most popular information medias of today has influenced our lives in many ways including the way we communicate through icons. The current study first explores Peirce's semiotic theory and then accordingly Investigates programs, concepts and expressions of iconic designs. Lastly, analyze modern iconic architectural design examples by using the theoretical framework in order to define concepts of semiotic and its relationship architectural design applications as design methods.

• Korean Institute of Interior Design Journal
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• v.26 no.2
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• pp.13-21
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• 2017

The revolution of new media has overthrown the existing social structure and brought about the changes in the concepts of the space and subject. These changes are identical to the existential issue of the space and subject and to fundamental issue of spatial design. This study will interpret the new media in view of ontology and analyze the characteristics by applying it to spatial design. In this study, the characteristics of new media of ontological viewpoint were divided into six categories containing the process space, the space of exterior meaning, the space of the affairs, interactive subject, playful subject and extension of sense, which were the basis for this analysis. The results showed that the expression characteristics of spatial concept of ontology and subject concepts revealed in the areas of architectural surface, the space of art and installation, and architectural design process.

• International Journal of Naval Architecture and Ocean Engineering
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• v.10 no.4
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• pp.499-507
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• 2018

Autonomous Underwater Vehicle (AUV), which are becoming more and more important in ocean exploitation tasks, needs energy conservation urgently when sailing the complex mission path in long time cruise. As hull lines optimization design becomes the key factor, which closely related with resistance, in AUV preliminary design stage, uncertainty parameters need to be considered seriously. In this research, Myring axial symmetry revolution body with parameterized expression is assumed as AUV hull lines, and its travelling resistance is obtained via modified DATCOM formula. The problems of AUV hull lines design for the minimum travelling resistance with uncertain parameters are studied. Based on reliability-based optimization design technology, Design For Six Sigma (DFSS) for high quality level is conducted, and is proved more reliability for the actual environment disturbance.

• Korean Institute of Interior Design Journal
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• no.22
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• pp.110-116
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• 2000

After the industrial revolution, interior of living space have shifted from the spacial structure of existing wall partitions to visually and spacially continuous open space. And these open space can be recognized mostly in the common space of housing architecture of living, dining, and kitchen space composition. In order to understand the characteristics of space and compositional method, the works of Le Corbusier, W. Grupius, and F.L. Wright in their living, dining, and kitchen space design have been analized from the collected materials to make evaluation for the similarities and significance of their space compositional factors. therefore, this study is to analize space composition and design factor of the modern housing space of Living, Dining, and kitchen space variation and character of open space design factor for the practical use as an index of designing contemporary living space.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.10a
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• pp.139-142
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• 2005

The design of the period after 20th century has rapid change. It is due to the improvement and the change of technology which is composed of the parameter that is the science and the machine after the Industrial Revolution. The technology becomes the criteria of the value and appears to the symbol of the period. The purpose of this study is to define the expression characteristics by the development of technology and to examine how specificly it makes the influence on the change of Interior expression characteristics. Interior design can be expressed more creative and 4th dimensional spaces by the development of technology from the space, form and material side

• Journal of Engineering Education Research
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• v.24 no.2
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• pp.12-19
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• 2021

Recently, the need of the future education in youth and univesity is rapidly increasing according to 4th industrial revolution. However, the maker and design education as a kind of youth and university future education has the following problems: it is implemented as an interesting convergence education including software education, it is managed by integrating youth and university competencies, it is composed in the form of blended class of consilient subject and nonsubject, it requires considering satisfaction in competency measurement and management, it is connected with entering school and getting job. To solve these problems, a case study on competency-based maker and design education using marine robot, which is based on the process-based learing method, integrated competency of youth and university, blended-type curriculum in terms of online and offline, is executed. To verify the competency-based maker and design education, the satisfaction survey in subject and nonsubject is performed. Study results show the example of the marine robot-based maker and design education and the need for additional study.

• Management & Information Systems Review
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• v.30 no.4
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• pp.293-314
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• 2011

The current study investigated the position of future strategy analyzed from the perspective of design management in relation to 10 strategic industries implemented through 3 steps based on promising growth and advancement of Busan industries and evidence provided from a study on the development program of design industry in Busan. It elucidated the role of design industry as a key role from the perspective of design management in an age of creative revolution of futures values. It analyzed the associations between composition of future strategy and design industry in 10 strategic industries of Busan, and explained the relationships with the strategic industries. The perspective of design management involves that design as a ground of values is an industry of the future values, which performs a key strategic function and role, and a theoretical investigation examined the relationships between main functions of design management and business management. Chapter 3 organized items proposed in the design development program in Busan and examined goals and systems which become basic formation of establishment of design strategy in Busan and conditions for design industry in the associations with strategic industry. Chapter 4 described priorities of practicability by step through analyzing and grouping top 30 projects in Busan industry including meanings as key strategy, position relations, and policy priorities by analyzing elements of design management of strategic industry and describing and analyzing the concept of promoting Busan design. The theme of the present study is to change perception of design management as a key value and a condition to decide creativity industry into future industry and to evaluate vision of Busan design industry and meanings proposed as proceeding strategy. The early 21st century is an age when agrarian society has changed into industrial society is dominated by knowledge economy of the information revolution and one should prepare for the growth phase of creative innovation based on creative revolution of the 4th wave of creative society by design management which has become a center in 2000s on the whole. With the advent of creative paradigm and based on the function and role of the current creative economy age new innovation DNA of design management will be created. Design process has changed through information and knowledge-oriented trends of digital through convergence between industries from industrial design to convergence of industries, and it is expected that integrated design of value creation using information and technology will play a key role in Busan design industry development and top 10 strategic industries.