• 한국의류학회지
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• 제46권4호
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• pp.565-582
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• 2022

In recent years, Jumchi-Hanji made of mulberry paper is used as a material for fashion items. This study examined the effect of the type of Choji method (Oebal-teugi or Ssangbal-teugi), layer number (one or two layers) and Jumchichigi time (20, 40, or 60 minutes) on the tensile, wet tensile, tearing and bursting strengths of Jumchi-Hanji. Jumchi-Hanjis used as test samples in this study were made from mulbery paper which was manufactured with either bleached or unbleached paper mulberry from Thailand. The results showed that Jumchi-Hanji made with two layers of mulberry papers had higher strength properties than Jumchi-Hanji made with only one layer. The strength properties of Jumchi-Hanji also increased with longer Jumchichigi time. Furthermore, this study confirmed that the effects of Jumchichigi time on Jumchi-Hanji strengths differed based on the type of Choji method, the layer number of mulberry papers used, and the specific strength property measured. Therefore, to guarantee the strength properties required by the application of Jumchi-Hanji paper as a fashion material, it is necessary to carefully consider the adequate Choji method and layer number to apply in the manufacture of Thai mulberry paper and the adequate duration time needed to perform Jumchichigi to Thai mulbery paper.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 하계종합학술대회 논문집(1)
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• pp.85-88
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• 2000

Distributed Control System(DCS) is one of the best solutions to implement control systems because it provides continuous observation of control process and execution of commands to induce proper operations. In this paper, a design of control network for DCS in nuclear power plant is proposed. The proposed control network on DCS has a simple architecture and deterministic property. Thus, the proposed control network offers hard real-time periodic service. It also has redundant media for the fault-tolerance. As a result, high safety and reliability required in nuclear power plant are guaranteed.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 추계종합학술대회 논문집
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• pp.483-486
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• 1998

In parallel system, the execution times of tasks cannot be accurately estimated and tasks may arrive at any time. In case, processors are overweighted with workload, the system utilization deteriorates. To solve this problem, dynamic load balancing that rearranges tasks in overloaded processors is required. We prospose the improved dynamic load balancing algorithm for $\textsc{k}-ary$ n-cubes using the property of ring and MWA which is the dynamic load balancing one for mesh. The proposed algorithm which uses the global load information has less communication cost than GDE, DDE and load difference within 1.

• Journal of applied mathematics & informatics
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• 제23권1_2호
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• pp.479-488
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• 2007

A sequential procedure is proposed in order to construct one-sided confidence intervals for a normal mean with guaranteed coverage probability and ${\beta}-protection$ when the normal mean and variance are identical. First-order asymptotic properties on the sequential sample size are found. The derived results hold with uniformity in the total parameter space or its subsets.

• 헤리티지:역사와 과학
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• 제53권1호
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• pp.64-87
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• 2020

한국의 문화재 관리 제도는 일제강점기에 제정 시행된 근대 문화재 법제와 구황실재산 관리 제도를 기반으로 성립되었다. 그동안 학계에서는 근대 문화재 법제를 중심으로 한 문화재 관리 제도에 대한 연구 성과는 축적해 왔으나 문화재 관리 제도의 또 다른 축을 이루고 있는 구황실재산 관리 제도에 대해서는 이를 문화재 제도사 관점에서 접근한 연구가 거의 없다. 구황실재산은 갑오개혁에 의해 봉건적 가산에서 분리 독립하였으나 일제의 식민지 침탈과정에서 정리 해체되어 일제강점기에는 식민지 왕가의 세습 재산으로 관리되었다. 그 후 정부 수립 후인 1954년 「구황실재산법」이 제정 시행됨으로써 구황실재산은 국유화와 함께 역사적 고전적 문화재로 규정되었고 구황실재산사무총국에 의해 관리되었다. 이때 구황실재산 중 영구 보존 재산으로 지정된 재산은 1963년 「문화재보호법」 1차 개정 시 부칙 제2조에 의거 국유 문화재로 정식 편입됨으로써 민족의 문화유산으로 인정받았다.결론적으로 말해서 한국의 문화재 형성과 문화재 관리 제도는 두 개의 서로 다른 연원인 근대 문화재 법제와 구황실 재산 관리 제도가 하나로 통합되어 이루어졌다고 할 수 있다. 근대 문화재 법제의 변천이 일본의 그것을 식민지 조선에 이식·적용하여 문화재를 규율하고 관리하는 과정이었다면 구황실재산 관리는 일제가 대한제국을 식민지화 하면서 구황실재산을 침탈하고 정리하여 운용한 과정이었다고 할 수 있다. 광복과 대한민국 정부수립으로 이 각기 다른 두 개의 흐름이 하나로 합쳐지는 계기가 마련되었고 마침내 1961년 문화재관리국 설치와 1962년 주체적인 「문화재보호법」 체제가 성립됨으로써 제도적 통합이 이루어졌다고 평가할 수 있다.

• 한국염색가공학회지
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• 제11권2호
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• pp.46-54
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• 1999

The conventional dyeing of wool/cotton blends involves a two bath two step method, i.e., after dyeing of the wool component with acid dyes in an acidic dyebath at $100^\circ{C}$, the dyeing of the cotton component with reactive dyes in an alkaline dyebath is performed. In order to overcome the disadvantage of the conventional two bath two step dyeing method of wool/cotton blends, it had prompted significant effort to the development of the one bath dyeing method which can accomplish savings in time, energy and water usage. To improve dyeing property of wool/cotton blends, cotton component was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. This study was carried out to investigate dyeing possibilities of wool/cationized cotton blends with acid dye/reactive dye by one bath two step method.

• Journal of Welding and Joining
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• 제18권6호
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• pp.74-82
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• 2000

The fluxless wetting properties of UBM-coated Si-wafer to the binary lead-free solders(Sn-Ag, Sn-Sb, Sjn-In, Sn0Bi) were estimated by wetting balance method. With the new wettability indices from the wetting curves of one side coated specimen, the wetting property estimation of UBM-coated Si-wafer was possible. For UBM of Si-chip, Au/Cu/Cr UBm was better than au/Ni/TI in the point of wetting time/ At general reflow process temperature, the wettability of high melting point solders(Sn-Sb, Sn-Ag) was better than that of low melting point one(Sn-Bi, Sn-In). The contact angle of the one side coated Si-plate to the solder could be calculated from the force balance equation by measuring the static state force and the tilt angle.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2007년도 춘계학술대회 논문집
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• pp.209-212
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• 2007

Rubber compounds have high viscoelastic property. One of the viscoelastic behaviors during profile extrusion is the swelling of extrudate. In this study, die swell of rubber compounds at the capillary die have been investigated through an experiment and computer simulation. They have been performed using fluidity tester in experiment and commercial CFD code, Polyflow in computer simulation. Die swell of rubber compounds for relaxation time at several modes under same conditions with the experiment were predicted using non-linear differential viscoelastic model, Phan-Thien-Tanner (PTT) model. The simulation was analyzed compared with the experiment. Viscoelastic behaviors for pressure, velocity and shear rate distribution were analyzed at the capillary die. It is concluded that the PTT model successfully represented the amount of the optimal die swell of rubber compounds for relaxation time at different modes.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.255-258
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• 2001

This introduces a improved method of the forward kinematics analysis, which finds the 6DOF motions and velocities from the given six cylinder lengths in the Steward platform. The numerical method(Newton Raphson Mehotd)of the forward kinematics analysises has the disadvantage of the long calculated time. To overcome this, we propose the competitive method that determine a proper initial value. Through the competitive method, we can select a proper initial value so that the calculate time is reduced. therefore we can give the property of the real time process to the forward kinematics analysis. We show the result comparing between general Newton-Raphson method and proposed one. From the result we verify the performance of the proposed method.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2010년도 하계학술대회 논문집
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• pp.115-115
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• 2010

This paper introduces a measurement system that measures behavior and electrical characteristics of overhead contact line irregular sections in real-time. For verification, we developed a prototype of the real-time overhead contact line irregular section behavior measurement system and a monitoring system for field tests. The current and temperature of contact wires and messenger wires were measured real-time by applying the system at KTX a commercial line. Therefore, acquiring data is possible with the developed system and this system that measures one of the fundamental and key factors, the catenary current, should be applicable to various areas such as detecting characteristics for designing overhead contact lines, enhancing speed, and enhancing energy.