• The Transactions of the Korean Institute of Electrical Engineers
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• v.39 no.7
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• pp.692-701
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• 1990

New selective tungsyen deposition deposition on silicon process is described which makes use of a previously unreported, alternating cyclic,

• International conference on construction engineering and project management
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• 2022.06a
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• pp.277-283
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• 2022

• Journal of the Korean Institute of Intelligent Systems
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• v.17 no.2
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• pp.259-264
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• 2007

In this paper, we composed chaos mobile robot by embedding many type of chaos circuit including Arnold Equation and Chua's Equation and proposed method of evaluation of obstacles when it meets or approaches an obstacle while the mobile robot searches an any plane with chaos trajectory and method of concentrating search when it faces target and verified these results. For obstacles avoidance, we developed algorithm that evades an obstacles with chaos trajectory by assuming fixed obstacle, obstacles using VDP model, hidden obstacles using BVP model as obstacles and for searching an object, we developed algorithm of searching with a chaos trajectory by assuming BVP model as an object, verified the results and confirmed reasonability of them.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.293-295
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• 2018

The final stage of the 3D work is rendering. After all, all 3D works are looking at via this rendered result, so the importance of the Rendering cannot be overstated. Because this is the final stage of 3D work, it requires a lot of theoretical and functional training in rendering control. However, However, it is difficult to invest as much time in college education in a limited period. This paper will compare and analyze the characteristics, and merits and demerits of these various kinds of Renderer (MARI, QUIXEL, Substace designer), and showed the result of analyses about the fact that educating which of the above 4 Renderers are helpful and beneficial for the students for the efficient education in the university where should teach much in the limited time.

• Journal of Ocean Engineering and Technology
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• v.24 no.2
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• pp.47-52
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• 2010

The proper surface pressure on the pistons rings in the diesel engine of a ship is very important, because the pressure controls the oil that is needed to maintain friction at acceptable levels between the pistons and the cylinders. In this paper, basic and theoretical concepts to compute the ring pressure were formulated and applied to obtain the proper surface pressures on selected sample piston rings. During the calculation of the pressure on the piston rings, the computation of the accurate free shape of the piston ring was required. Earlier, Arnold and Prescott introduced theories to compute the free shapes of piston rings, and their approach used rectangular and polar coordinates. In this paper, the free shapes of piston rings using two different theories were computed and compared. The results were quite close, representing the free shape of the piston ring. Ring pressure was computed using the Arnold's free shape that was obtained. A simple GUI was made to compute the surface pressure on the piston rings.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.8.3-8
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• 1979

Dohne (1944) has studied the consumption of air during phonation in patients with dysphonia and Arnold (1955, 1958) reported that the maximum phonation time is frequently reduced to a few seconds in paralytic dysphonia. Also, Nishikawa investigated the relation among the vital capacity, maxium phonation time, caculated mean flow rate and various vocal characteristics in patients with hoarseness. Authors have studied the aerodynamic characteristics of the vocal tract in the following aspects, using 9 L. Respirometer made in Collins Inc.; 1. Maximum phonation time 2. Maximum phonation volume 3. Mean flow rate 4. Vocal velocity index

• Journal of East-Asian Urban History
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• v.1
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• pp.7-24
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• 2019

A. J. Toynbee published a book called Travel to China(1931) after traveling around the Asian continent in 1929. The book mostly focuses on Japan, China and the relationship between the two countries. Toynbee visited major cities in Japan and China by train. Most of the Japanese cities he saw were turning into modern cities in the process of spontaneous modernization mixed with its tradition. On the other hand, Chinese cities that he visited showed him various characteristics, including traditional, colonial, or semi-colonial cities. The modern cities of Japan and China in the late 1920s were transformed into various aspects under the influence of tradition, spontaneous modernization, colonial or anti-colonial modernization. How did Toynbee look at cities in East Asia? How did he recognize the relationship between tradition, modernization and colonization while visiting this area? Toynbee emphasizes the weight and influence of tradition especially in the development of modern cities in Japan and China. So, are modern European cities born out of their own traditions? Modern cities everywhere in the East and West were newly developed under the influence of tradition. Toynbee's attitude, which emphasizes especially its tradition in the modern cities of East Asia, seems to reflect his Orientalistic view.

• Bulletin of the Korean Chemical Society
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• v.26 no.5
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• pp.808-810
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• 2005

• The Bulletin of The Korean Astronomical Society
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• v.32 no.2
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• pp.67.1-67.1
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• 2007

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.09a
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• pp.431-434
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• 2003

In this paper we introduce a modified objective function for fuzzy c-means clustering with logistic regression model in the presence of noise cluster. The logistic regression model is commonly used to describe the effect of one or several explanatory variables on a binary response variable. In real application there is very often no sharp boundary between clusters so that fuzzy clustering is often better suited for the data.