• Journal of Engineering Education Research
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• v.16 no.2
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• pp.3-10
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• 2013

This paper aims to present the model of engineering design education workshop for appropriate technologies. Since 2008 Handong Innovation Center for Engineering Education and a Non-Profit Organization, Sharing and Technology, held engineering design workshop during every summer break. We present the contents of the workshop and analyze the educational effects of the program. The workshop is entitled "Engineering Design Academy for the other 90%" because we take it serious that most of the research and development efforts of the science and technologies in the world is just focused on the rich people while the other 90% people in the world are unreachable from the benefits of the modern technologies. By the workshop we tries to provide the college students the perspectives on the worldwide poverty problems and to encourage them to serve the 3rd world people in need through their specialties in the field of engineering profession. The evaluation results by participants are very positive. Especially, we began invite the 3rd world people to the workshop as design problem clients from 2010 summer workshop. The evaluation from them are also very positive. The analysis results on the educational effects of the workshop show that the workshop improves the students skills required by the ABEEK (Acreditation Board of Engineering Education of Korea) including not only design capability but also team work, communication skill, understanding the social impacts of engineering design, engineering ethics, and globalization.

• Journal of Fashion Business
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• v.3 no.1
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• pp.147-158
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• 1999

The Purpose of this study is to comprehend the form of Post-modernism in 1980~90 Fashion by comparing to the representative form of Modernism. For empirical data, photographs and critics about fashion were collected from Vogue fashion magazine to differentiate from other studies which is mostly analysed from collection. The results are as follows: The Modernism in fashion can be epitomized simple and functional form as a rational costume and Post-modern fashion expresses all sorts of emotion as a react of rational theme of modernism with manners of anti-formal pluralism such as pastiche, parody and Kitsch. The fashion in 1980-90s in Vogue expressed as follow :1) The Postmodernism is well exploited around 1990 and costrained by traditional and classical Mode. 2) The other main character of Postmodernism, romantic eroticism is broadly expressed with material and slim curved body conscious line. 3) The Modernism and Postmodernism coexisted in the end of 1990, in more matured format.

• International Journal of Internet, Broadcasting and Communication
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• v.12 no.1
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• pp.90-94
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• 2020

Artificial intelligence (AI) is software that learns large amounts of data and provides the desired results for certain patterns. In other words, learning a large amount of data is very important, and the role of memory in terms of computing systems is important. Massive data means wider bandwidth, and the design of the memory system that can provide it becomes even more important. Providing wide bandwidth in AI systems is also related to power consumption. AlphaGo, for example, consumes 170 kW of power using 1202 CPUs and 176 GPUs. Since more than 50% of the consumption of memory is usually used by system chips, a lot of investment is being made in memory technology for AI chips. MRAM, PRAM, ReRAM and Hybrid RAM are mainly studied. This study presents various memory technologies that are being studied in artificial intelligence chip design. Especially, MRAM and PRAM are commerciallized for the next generation memory. They have two significant advantages that are ultra low power consumption and nearly zero leakage power. This paper describes a comparative analysis of the four representative new memory technologies.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.15 no.25
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• pp.83-90
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• 1992

This paper aims at the problem that design the network of Rig-star type with the minimum cost, which the Ring is composed of the selected nodes(concentrators) among the several candidate nodes on the network and other nodes(terminals) is connected to the Ring by star subnetwork. Especially, we consider the terminal reliability in network design problem. We develop the heuristic algorithm for network design problem to obtain the near optimal(best) solution for problem. We use an add-heuristic method and 2-exchange method in developing the heuristic algorithm.

• Composites Research
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• v.14 no.3
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• pp.10-17
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• 2001

A reseach was peformed to develop composite pressure vessels in conjunction with design, fabrication, and test. Fiber pattern and angels were decided by CADFIL software and they were [$liner/15^{\circ}/15^{\circ}/90^{\circ}/18^{\circ}/90^{\circ}/21^{\circ}/21^{\circ}/90^{\circ}$]. Fabrication of bottles were done by 5-axis filament winding machine. During fabrication fiber optic sensors were embedded to measure the strain at points when internal pressure was applied by water pump. Conventional strain gage instrumentation showed the stable test results. The test results were compared to finite element analysis results and they were close each other in strain values. One can see the successful design and fabrication of single boss composite vessels.

• Journal of the Korea Furniture Society
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• v.10 no.1
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• pp.73-82
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• 1999

For the two decades, the modern furniture design has pursued a variety of conceptions characterized by the Post-modernism, new international styles called Memphism, High-tech, the Post-Industrial design and Deconstruction. Along with these trends, the development of new materials and technology has not only made possible the emergence of innovative furnitures and other ultra-modern products, but also presented a wide range of sensitive designs. The fast development of digital technology will surely bring about globalization in all industrial fields in the next century. Amid this rapid changes, high-tech will merge with handcraft in the area of furniture design to offer economical and more innovative concepts. This will ultimately lead to the small scale production system of a wide variety of furnitures. In the coming century, we can pursue more individualized designs and concepts appealing to human nature.

• International Journal of Highway Engineering
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• v.20 no.3
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• pp.39-46
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• 2018

PURPOSES: This study is to estimate nondestructive strength equation based on probability for bridges using field test data. METHODS : In this study, a series of the field inspection and the test have been performed on 297 existing bridges, in order to evaluate the bridges, based on the test results of the in-depth inspection, and the estimated strengths by means of the nondestructive strength equations are analyzed and compared with results of the core specimen strengths. RESULTS : According to results of analyses, In case of standard design compressive strength of concrete is 18MPa, 21MPa, similar reliability of RILEM equation were 0.89~0.90, but in case of standard design compressive strength of concrete is 35MPa, 40MPa were 0.4~0.56. According to standard design compressive strength of concrete is 40MPa, similar reliability of ultrasonic pulse velocity method equation were 0.56. CONCLUSIONS :RILEM equation had high similar reliability than other equation in case of standard design compressive strength of concrete is 18MPa, 21MPa, but had low similar reliability than other equation in case of standard design compressive strength of concrete is 35MPa, 40MPa. and ultrasonic pulse velocity method equation had low similar reliability than other equation in case of standard design compressive strength of concrete is 40MPa.

• Journal of Engineering Education Research
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• v.19 no.5
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• pp.25-34
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• 2016

The concept of the design thinking can be effective in engineering design process especially in developing the appropriate technology product. In this paper we analyze the student's design activities during the 'Creative and Integrated Design Academy for the other 90%' to solve the problems in the developing countries from the perspective of the design thinking. Based on this analysis we propose the direction of the creative and integrated design activities to solve the appropriate technology products and also the direction of the future engineering design process.

• Current Optics and Photonics
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• v.4 no.4
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• pp.326-329
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• 2020

The Eaton lens, with spherical symmetry to its refractive index, was described by Eaton in 1952 and was found recently in the design of an invisible sphere for cloaking. In this paper, an Eaton lens for rotating 90° was designed using Luneburg theory, by which we found it was a fourth-order equation in the refractive index n. Therefore, the refractive index n has four roots. The equation in n was solved and studied using mathematical technology. The unsuitable complex roots of the equation should be dropped; consequently, only one of the four roots remained. To verify the refractive-index profile, the only root was solved for, before a simulation using finite-element analysis (FEA) was performed. The simulation showed that all rays will bend 90° to the right. The result of the simulation is identical to our expectation. This treatment provides a possible method for rotating light at many other angles.

• Korean Institute of Interior Design Journal
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• v.14 no.5 s.52
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• pp.212-217
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• 2005

This study focuses on understanding the design characteristics of interior styles reflected in contemporary residential spaces by choosing and analyzing some design cases, reflecting interior styles of various countries, which is broadcasted through an interior design cable television in the U.S. Moreover, this study is meaningful because it provides a chance to extend the scope of study to the improving and developing Korean interior style for clarifying Korean identity to make Korean image by the comparison with other cultural spheres. In this study, after sorting 10 interior- style types and 90 design cases from the 12 cable television that mainly manage interior design projects, I grasp interior-design characteristics of each cases classified by form/expression and material. Research objects of the form/expression part for the interior-design characteristics are limited to furniture, textile, and ornaments, and those of material part are limited to furniture and ornaments.