• Ceramist
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• v.9 no.6
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• pp.37-41
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• 2006

A novel grinding technology, known as ELID (Electrolytic In-Process Dressing), which incorporates 'inprocess dressing' of metal- bonded diamond grinding wheels, provides continuous protruding abrasives effectively applied to ceramic grinding. This article describes the ELID-grinding method and introduces its application examples on ceramics

• Bulletin of the Korean Space Science Society
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• 2009.04a
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• pp.28.1-28.1
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• 2009

• Journal of Korea Foundry Society
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• v.43 no.6
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• pp.330-333
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• 2023

• Korean Institute of Interior Design Journal
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• v.19 no.6
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• pp.91-99
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• 2010

There is a commonality between Frank Lloyd Wright and Charles Rennie Mackintosh in that they created the new patterns of geometric Art Nouveau from the late 19th and early 20th centuries. This study compares the furniture of Wright and Mackintosh who had significant impacts on the development of modern design for each of the periods divided by their design feature to find the individualities and similarities of their design. It is an analytical approach with an accurate understanding of the design trends of the Art Nouveau era. The results of the furniture comparison are as follows: The finding is that Wright and Mackintosh designed creative furniture in harmony with a specific indoor space, Organic design was well expressed through the selection and use of wooden materials, Based on the understanding of tree characteristics, they did not use detailed decorations, but designed the simple and rigorous forms of furniture with highlighted interest in geometry. As for shape, Wright's furniture in his early days tend to be look largely formal and heavy. Since his debut in Japan in 1905, the furniture design became very sophisticated. On the other hand, Mackintosh's chairs are characterized by plenty of geometric patterns and long back. In many cases, his chairs were designed as part of formative elements in space, not for the purpose of furniture itself. As for materials and colors, Wright used mainly cherry wood. And he also utilized metals colored in olive green, red-brown and others for office furniture. The frames, fabrics and leather used for most of the furniture have natural colors, which are harmonious with spaces. Meantime, Mackintosh used primarily oak and ash trees. He used seat cushions and various colors to make the design of furniture have a sophisticated and simple image. The materials used for seat panel are horsehair, rush, silk and leather. He applied these materials to the furniture by weaving or cutting them.

• Journal of Applied Biological Chemistry
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• v.58 no.4
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• pp.339-344
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• 2015

In this study, the quality characteristics of purple corn cob extract (PCCE) by extraction time were examined. The cob of purple corn, which is mainly cultivated in the Andes region of South America, contains more anthocyanin than the corresponding purple corn seeds. The aim of this study was to determine the optimal conditions for the preparation of water extracts from purple corn cob. PCCE had a soluble solid content of $0.6^{\circ}Brix$. The Hunter lightness ($L^*$), redness ($a^*$), yellowness ($b^*$) values of the PCCE were 31.0, 38.4, and 9.0, respectively. The PCCE contained 24.64 mg/g of cyanidin, 0.35 mg/g of pelargonidin, and 17.42 mg/g peonidin, and showed greater antioxidant activity than the other extracts. Therefore, the optimal extracting conditions for preparing PCCE were a temperature of $30^{\circ}C$ and an extraction time of 24 h.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.164-171
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• 2022

The aesthetics of Japanese animation have developed in earnest since Tezuka Osamu produced TV animation . This is because provided the aesthetic foundation of '3-comma animation' and 'limited animation techniques based on 8 frames per second. In fact, Miyazaki Hayao and Takahata Isao of Ghibli studio have expanded the influence of the Japanese animation industry to the world through the production of feature animation based on 3-comma animation. Inoue Toshiyuki, who participated as an animator in many works representing the Japanese animation industry, also said that the essential feature of Japanese animation aesthetics is 3 comma animation that shows the impressive movement of the character concisely. As such, 3-comma animation technique is the main aesthetic background that has led to the industrial development of Japanese animation.

• Journal of Ginseng Research
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• v.28 no.4
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• pp.201-206
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• 2004

This experiment was conducted to determine the economic application method of Yakto among 6 application method : amount of Yakto application $3\;plot(70\;l,\;25.5\;l,\;13,3\;l/kan;\;180cm{\times}90cm),$ and added side dressing(3 l/kan) each plot. The reduced amoumt of Yakto application(25.5 l, 13.3 l/kan) were lower the contents of inorganic nitrogen, $P_{2}O_{5},\;K,\;Ca$ and Mg, but similar pH in bed soil compared with standard Yakto application(70 l/kan). Side dressing applicated on 29 May increased the contents of inorganic nitrogen, $P_{2}O_{5},\;K,\;Ca,\;Mg$ and salt concentration in bed soil compared with non­side dressing in each Yakto application plot(70 l, 25.5 l, 13,3 l/kan). The reduced amoumt of Yakto application(25.5 l/kan) added side dressing(3 l/kan) were similar the contents of inorganic nitrogen, K, Mg and salt but lower $P_{2}O_{5}$ and Ca in bed soil compared with standard Yakto application(70 l/kan) in June. The reduced amoumt of Yakto application(25,5 l/Kan) added side dressing(3 l/kan) was similar the contents of P, K, Ca and Mg but lower N in leaves compared with standard Yakto application(70 l/kan). The reduced amoumt of Yakto application(25.5 l/kan) added side dressing(3 l/kan) was shorter stem length, and higher $5{\%}$ chlorosis of leaf tip, but similar emergence ratio, survival ratio, leaf senescence ratio, chlorophyll, stem diameter and leaf area compared with standard Yakto application(70 l/kan). These suggested that 25.5 l Yakto application added side dressing(3 l/kan) per kan might be possible economical application method of Yakto.

• Proceedings of the KIEE Conference
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• 2004.11c
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• pp.544-546
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• 2004

This paper designs and evaluates a complementary filter for fusion of inertial sensor signals. Specifically, the designed filter is applied to inverted pendulum control where the pendulum's angle information is obtained from low-cost tilt and gyroscope sensors instead of an optical encoder. The complementary filter under consideration is a conventional one which consists of low- and high-pass filters. However, to improve the performance of the filter on the gyroscope, we use an integrator in the filter's outer loop. Frequency responses are obtained with both tilt and gyroscope sensors. Based on the frequency response results, we determine appropriate parameter values for the filter. The performance of the designed complementary filter is evaluated by applying the filter to inverted pendulum control. Experiments show that the performance of the designed filter is comparable to that of an optical encoder and low-cost inertial sensors can be used for inverted pendulum control with the heir of sensor fusion.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.623-624
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• 2005

Micro injection molding is a branch of micro system technology and has been under development for the mass manufacture of micro parts. Enhanced technological products like micro optical devices are entering the market. This paper presents fundamental research on the injection molding technique in micro fabrication. In order to successful manufacturing of micro plastic parts, it is necessary to research for development of micro-injection machine, machining of micro mold, decision of optimum injection conditions and the research for polymer material. Therefore in this study, in order to machining of micro mold, a mold core with microscopic V-shaped groove was tooled by ultra-precise tooling machine. The transcription experiments with a polymer, PMMA resin on the surface of core with Ni plating were carried out and surface profile of injected parts was measured with AFM.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.1179-1180
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• 2005

3D micro scaled shapes are fabricated with the method of direct writing and superposing grooving in ambient air using femto-second laser pulses and copper, aiming at establishing an industrially useful femto-second laser processing machine to be able to fabricate three dimensional micro-scale structures, especially micro scaled molds, and processing techniques. For the several advantages, there is no thermally influenced region around the area irradiated by the laser beam and surfaces irradiated laser beam are smooth and substances ablated to form are no attached on the surface of works and so on, the femto-second laser technology is anticipated for advanced micro/nano precision technology.