• Journal of the Korea Furniture Society
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• v.24 no.4
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• pp.350-364
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• 2013

Based on the background of the times and theoretical background that influenced the formation of the works of Charles Rennie Mackintosh, one of representative architects of Art Nouveau, this study examined the formative characteristics of furniture design by period. In addition, his influences on the modern furniture design were also reviewed. In the latter half of the 19th century, due to Arts and Crafts Movement, the popularity of Art Nouveau was not high in England and due to conservative and traditional culture, Mackintosh had difficult time to display his ability in England. On the other hand, because Glasgow, one of industrial cities located in the center of Scotland where he had grown was an open and modern city, Mackintosh could win international fame in architecture and furniture design thanks to the atmosphere. Furthermore, it is found from the formative characteristics of his works that Historicism, Arts and Crafts Movement and Japanese culture and the influences of Continent became his theoretical background. His works creatively combined the noble design of Scotland and Art Nouveau to be considered a simple and pure style with a straight tendency and his working period can be divided into Beginning, Middle and Last Period according to the formative characteristics of furniture design. His constituting principle that decorated the structure influenced the Wien Secession's activities to form Wiener Werkstaette and this finally became the important background to develop to 'Modernism Design' through Art Deco and Bauhaus.

• Geomechanics and Engineering
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• v.16 no.2
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• pp.169-176
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• 2018

An attempt has been made here to study the propagation of SH-type surface waves in an elastic medium, which is initially stressed and heterogeneous and has a point source inside the medium. The upper portion of the composite medium is a sandy layer. It is situated on an initially stressed heterogeneous half-space, whose density, rigidity and internal friction are function of depth. The analysis has been carried out by using Fourier transform and Green's function approach. The phase velocity has been investigated for several particular situations. It has been shown that the results of the study agree with those the case of Love wave propagation in a homogeneous medium in the absence of the sandy layer, when the initial stress is absent. In order to illustrate the validity of the analysis presented here, the derived analytical expression has been computed numerically, by considering an illustrative example and the variances of the concerned physical variables have been presented graphically. It is observed that the velocity of shear wave is amply influenced by the initial stress and heterogeneity parameters and the presence of the sandy layer. The study has an important bearing on investigations of different problems in the earth's interior and also in seismological studies.

• Journal of the Korean Society of Clothing and Textiles
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• v.35 no.3
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• pp.254-266
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• 2011

This study analyzes the state and products of shopping malls that sell naturally dyed products in Japan. In this study, 37 natural dyeing shopping malls were selected. The results of this study are as follows. There are many natural dying internet shopping malls located in the areas of Tokyo, Kyoto, and Okayama. The most frequent dyes were indigo, followed by akane, persimmon, mud, vegetation, and tea. The highest ordered product categories were accessories, followed by adult clothes, and interior decoration products. The most frequent products were adult hats, followed by towels (handkerchiefs), scarves, T-shirts, and bags. For the price of products, 3,000-4,000${\yen}$ was the highest for T-shirts, with 2,000-3,000${\yen}$ and 4,000-S,000${\yen}$ for newborn baby and child clothing, 5,000-10,000${\yen}$ for hats and bags, 3,000-4,000${\yen}$ for scarves, and 1,000-2,000${\yen}$ for towels (handkerchief). Concerning product information, most of the shopping malls offer the product size and the product explanations, but over half of them did not show the properties or directions for handling the product.

• Journal of the Korean Chemical Society
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• v.39 no.1
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• pp.14-22
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• 1995

This paper is concerned with the design of optimal surface heating patterns that result in focusing acoustic energy inside a subsurface target volume at a specified target time. The surface of the solid is heated by an incident laser beam which gives rise to shear and compressional waves propagating into the solid. The optimal heating design process aims to achieve the desired energy focusing at the target with minimal laser power densities and minimal system disturbance away from the target. The optimality conditions are secured via the conjugated gradient method and by the finite element method along with using the half-space Green's function matrix. Good quality energy focusing is achived with the optimal designs reflecting the high directivity of the photothermally generated shear wave patterns.

• Journal of architectural history
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• v.25 no.6
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• pp.81-88
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• 2016

The purpose of this study is to inquire original design and character of dancheong in Yeongnamnu P avilion which features unusual portraits of twisting dragons and four heavenly creatures. Its artistic value and originality can be found in the portraits of four heavenly creatures which are painted on the interior seonjayeon(fan shape rafter) and in the unique design of crossbeam meoricho(flower decorations on each side of pillars). Yeongnamnu's crossbeam meoricho is janggu-meoricho type(meoricho with hourglass figure) with full-shape lotus and half-shape flower decorations. And it can be said that, dragon portrait painted on the border of lotus and flower decorations in green and yellow is a very unique style of dancheong, for the reason that it has scarcely been used before and ever since. The portrait of four heavenly creatures painted on each corner of seonjayeon is also found to be unique in design, for the reason that the design has rarely been used throughout history, with only two exceptions in mural tombs of Goguryeo and folding screen in Injeongjeon Hall of Changdeokgung P alace. With its unique and authentic feature along with its rarity in number, the portrait of four heavenly creatures painted on Yeongnamnu can be considered as quite symbolic and important.

• International Journal of Concrete Structures and Materials
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• v.11 no.1
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• pp.161-169
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• 2017

Flat slab systems are vastly used in multi-story buildings because of their savings in story height and construction time, as well as for their flexibility in architectural remodeling. However, they frequently suffer brittle punching-shear failure around columns, especially when subjected to lateral loads. Therefore, seismic codes labeled flat slabs as non-ductile systems. This research goal is investigating some construction alternatives to enhance flat slab ductility and deformability. The alternatives are: adding different types of punching-shear reinforcement, using discreet fibers in concrete mixes, and increasing thickness of slab around columns. The experimental study included preparation and testing of seven half-scale interior slab-column connections up to failure. The first specimen is considered a reference, the second two specimens made of concrete mixes with different volumetric ratios of polymer fibers. Another three specimens reinforced with different types of punching-shear reinforcement, and the last specimen constructed with drop panel of inverted pyramidal shape. It is found that using the inverted pyramid-shape drop panel of specimen, increases the punching-shear capacity, and the initial and the post-cracking stiffnesses. The initial elastic stiffnesses are different for all specimens especially for the slab with closed stirrups where it is experienced the highest initial stiffness compared to the reference slab.

• International Journal of Concrete Structures and Materials
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• v.11 no.2
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• pp.229-245
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• 2017

Post-earthquake observations revealed that seismic performance of beam-column connections in precast concrete structures affect the overall response extensively. Seismic design of precast reinforced concrete structures requires improved beam-column connections to transfer reversed load effects between structural elements. In Turkey, hybrid beam-column connections with welded components have been applied extensively in precast concrete industry for decades. Beam bottom longitudinal rebars are welded to beam end plates while top longitudinal rebars are placed to designated gaps in joint panels before casting of topping concrete in this type of connections. The paper presents the major findings of an experimental test programme including one monolithic and five precast hybrid half scale specimens representing interior beam-column connections of a moment frame of high ductility level. The required welding area between beam bottom longitudinal rebars and beam-end plates were calculated based on welding coefficients considered as a test parameter. It is observed that the maximum strain developed in the beam bottom flexural reinforcement plays an important role in the overall behavior of the connections. Two additional specimens which include unbonded lengths on the longitudinal rebars to reduce that strain demands were also tested. Strength, stiffness and energy dissipation characteristics of test specimens were investigated with respect to test variables. Seismic performances of test specimens were evaluated by obtaining damage indices.

• Journal of Families and Better Life
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• v.32 no.2
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• pp.1-11
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• 2014

This study investigated the characteristics of housing considerations of college students from post graduation to pre marriage. The data came from the survey with 267 college students in Ulsan and Daegu from November 26 through December 14, 2012 and were analyzed with descriptive statistics, cross-tabulation analysis with chi-squared test, and logistic regression analysis. Over half of the respondents desired to separate from parents for the adulthood and about forty-three percent of them wanted to live alone. Among the housing characteristics, location, utilities, housing type and facility features were important for the respondents desiring to live the single life, and specifically, apartment and efficiency with $33-66m^2$, low monthly rents, floor plan with bedroom, kitchen and bathroom, and good public transportations were the most and primarily preferred features of housing for their future housing consideration. The variables influencing future housing preferences for the respondents were the number of roommate and preferred housing type.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.65 no.2
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• pp.279-285
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• 2016

In this paper, a cogging torque of IPM(Interior Permanent Magnet)-type BLDC motor is analyzed by FE program and the optimized notch on the rotor surface is designed to minimize the torque ripple. A differential evolution strategy algorithm and a response surface method are employed to optimize the rotor notch. In order to verify the proposed algorithm, an IPM BLDC motor is used, which is 50 kW, 8 poles, 48 slots and 1200 rpm at the rated speed. Its characteristics of the motor is calculated by FE program and 4 design variables are set on the rotor notch. The initial shape of the notch is like a non-symmetric half-elliptic and it is optimized by the developed algorithm. The cogging torque of the final model is reduced to $1.5[N{\cdot}m]$ from $5.2[N{\cdot}m]$ of the initial, which is about 71 % reduction. Consequently, the proposed algorithm for the cogging torque reduction of IPM-type BLDC motor using the rotor notch design seems to be very useful to a mechanical design for reducing noise and vibration.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1075-1076
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• 2007

The HEV (Hybrid Electrical Vehicle) becomes commercialized recently because of high fuel efficiency and low air pollution. The highest output power system except the traction motor is an air conditioner compressor in HEV system. The full or hybrid electric compressor is applied for HEV. The general HEC (Hybrid Electric Compressor) requires the half power motor and drive system of the full electric compressor because the rated output power of motor drive system is designed to charge the minimum cooling capacity at the time of idle stop. Therefore, this hybrid electric is more economical and practical solution. In this paper, we studied about the motor drive system of hybrid electric compressor for HEV. The applied voltage specification is 42 V, an IPMSM (Interior Permanent Magnet Synchronous Motor) is designed and applied as the compressor drive motor.