• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.11a
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• pp.113-117
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• 2007

Wabi-Sabi is the most conspicuous and characteristic feature of what we think of as traditional Japanese beauty. It occupies roughly the same position in the japanese pantheon of aesthetic values as do the Greek ideals of beauty and perfection in the West. All things air impermanent. All things are imperfect. all things are incomplete. it offers an aesthetic ideal that uses the uncompromising touch of mortality to focus the mind on the exquisite transient beauty to be found in aoo things impermanent. Wabi-Sabi is a beauty of things imperfect, impermanent, and incomplete. It is a beauty of things modest and humble. It is a beauty of things unconventional. Wabi-Sabi is the art of everyday life. These may be the methods for the relationship establishment between human and space on the ground of Wabi-Sabl concepts which is commonly found no in contemporary interior space in japan.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.05a
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• pp.594-597
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• 2006

Chloride ion penetration and carbonation are the most important factors in the durability problems of reinforced concrete structures. Most of the existing studies on those subjects are focused on the no-crack concrete, though the existence of crack may strongly affect the chloride ion penetration and carbonation. To evaluate the influence of crack on the chloride ion penetration and carbonation and to assess the service life of reinforced concrete more accurately, finite volume analyses (FVA) were performed based on the FV mesh containing the ideal crack whose width is uniform along the depth. Analytical results show that the influence of crack width and depth is much more pronounced for the chloride ion penetration than for the carbonation.

• The Transactions of the Korean Institute of Power Electronics
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• v.13 no.5
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• pp.383-390
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• 2008

The SCR in Static Transfer Switch (STS) is used for reliability improvement of important load's power supply in industry field. However an average of 2% fault in thyristor(SCR) occurs, so that the attached mechanical switch is paralleled with SCR's both end points and SCR operates only during the $12{\sim}208$[mS] before operation of the mechanical switch. Also, an ISC (Ideal State Conditioning Interlock Device) - STS system that two power supply paths may not be thrown at the same time is developed to remove the overlap section perfectly when a short or earth fault is generated in one system. This method has reduced the fault rate remarkably through the reduction of SCR's fatigue degree by using SCR in conversion operation corresponding to 0.89 times a year. Also, in case of fault generations, it does not affect to supply power to the load, therefore it contributes to the promotion of reliability in the power supply.

• Journal of Korean Society of Rural Planning
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• v.5 no.1 s.9
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• pp.87-94
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• 1999

The purpose of this study is to find through the algorithm of traditional region theory how nature has been recognized and occupied and harmoniously used by human beings. As seen Korean traditional villages, the natural elements such as mountains and streams in Yongdam are more remarkable than the artificial elements. The people in the village regards a radius of 4-12 km as their territory and an ideal space harmonized with natural landscape. The landscape structure of Yongdam shows traditional fengshui form and has a all the characteristics that Korean rural villages have. The landscape elements, such as mountains, rivers, plains, trees, soil color, etc. characterize Yongdam village and make the landscape of Yongdam a unique place. Traditional region theory is to study an emotional reaction to the quality of life, and landscape of a settlement. And it should be a basic theory to understand the whole landscape.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2003.04a
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• pp.184-189
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• 2003

In metal cutting operation, it is very important that predict cutting force and work surface. Vibration is an unstable cutting phenomenon which is due to the interaction of the dynamics of the chip removal process and the structural dynamics of machine tool. when Vibration occurs, it reduces tool life, results in poor surface roughness and low productivity of the machining process. In this study, the experiments were conducted in machining center without cutting fluid to investigated phenomenon of the Vibration. In the experiments, accelerometers were set up at the tail stock and tool holder and the signals were picked up. In this paper, surface roughness profiles will be generated under the ideal condition and the occurrence of the vibration based on the surface shaping simulation model.

• International journal of advanced smart convergence
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• v.4 no.2
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• pp.34-37
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• 2015

An ideal teaching-learning method, such as the blended learning method, is to motivate interests in education and to allow active class participation of students. Students exposed to this method are hypothesized to be dedicated in learning and their school life. A research was conducted on $11^{th}$ graders in Daejeon city high school specialized in industry; the blended learning method was applied to a course, digital logic circuit and the effects on the students' learning were monitored. The result shows that compared with a common leaning method, the blended learning method is very effective in terms of increasing educational interest, class participation, the level of concentration in class and academic achievement of students. Also, it shows positive feedbacks from the students on the educational videos and the usage of the contents. Conclusively, the blended learning method effectively increases academic achievements through improved educational motivation and active class participation which positively affect the overall satisfaction of participants.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.12 no.6
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• pp.84-91
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• 2003

In metal cutting operation, it is very important that predict cutting force and work surface. Vibration is an unstable cutting phenomenon which is due to the interaction of the dynamics of the chip removal process and the structural dynamics of machine tool. When vibration on, it reduces tool life, results in poor surface roughness and low productivity of the machining process. In this study, the experiments were conducted in machining center without cutting fluid to investigate the phenomenon of vibration. In the experiments, accelerometers were set up at the tail stock and tool holder and signals were picked up. Surface roughness profiles are generated under the ideal condition and the occurrence of vibration based on the surface shaping simulation model.

• The Journal of Information Systems
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• v.14 no.3
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• pp.31-36
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• 2005

Firms seldom survive and prosper solely through their individual efforts. Each firm's performance depends upon the activities and performance of others and hence upon the nature and quality of the direct and indirect relationships a firm develops with its counterparts. Textile companies have tried to improve their organizational competitiveness in order to survive in the digital age global market. The challenge in textile supply chain management is the development of collaboration network which accommodates diverse concerns of various participants while explicitly recognizing interdependencies and promoting effective relationship management. Major contents of the study are as follows. First, ideal collaboration network model from the supply chain of the textile industry is suggested. Second, utilizing the collaboration model, A framework for textile e-marketplaces supply chians is designed to improve customer services and delivery time, to promote information sharing, and shorten product life cycle time. The framework suggested is expected to promote corporate innovation and information sharing, generate infrastructure which provides appropriate communication and operations capabilities for the textile companies.

• Current Photovoltaic Research
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• v.9 no.2
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• pp.36-44
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• 2021

To endorse the reliability and durability of the solar photovoltaic (PV) device several tests were conducted before exposing to the outdoor field in a non-ideal condition. The PV module has high probability that intend to perform adequately for 30 years under operating conditions. To evaluate the long term performance of the PV module in diversified terrestrial conditions, one should use the outdoor performance data. However, no one wants to wait for 25 years to determine the module reliability. The accelerating stress tests performing in the laboratory by mimicking different field conditions are thus important to understand the performance of a PV module. In this review, we will discuss briefly about different accelerating stress types, levels and prioritization that are used to evaluate the PV module reliability and durability before using them in real field.

• Journal of applied mathematics & informatics
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• v.41 no.5
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• pp.973-988
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• 2023

In real-life scenarios, we may have to deal with real numbers or numbers in intervals or a combination of both to solve multi-criteria decision-making (MCDM) problems. Also, we may come across a situation where we must combine this interval and actual number membership values into a single real number. The most significant factor in combining these membership values into a single value is by using aggregation operators or scoring algorithms. To overcome such a situation, we suggest the cubic hypersoft set (CHSS) concept as a workaround. Ultimately, this makes it simple for the decision-maker to obtain information without misconceptions. The primary aim of this study is to establish some operational laws for the cubic hypersoft set, present the fundamental properties of aggregation operators and propose an algorithm by using the technique of order of preference by similarity to the ideal solution (TOPSIS) technique based on correlation coefficients to analyze the stress-coping skills of workers.