• 한국의상디자인학회지
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• 제25권2호
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• pp.31-44
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• 2023

Fashion design in the metaverse is not simply a 3D avatar or virtual fashion, it is an important clue for shopping trends, and the role of fashion design has grown even more because avatars and humans are identified and active. This study, I attempts to understand the metaverse platform accurately and find out the scope of fashion design within the metaverse platform. In addition, we want to provide basic data that can expand the field by using fashion design in various ways on the metabus platform. This study investigated and analyzed various metaverse fashion cases, articles, software, and methods used by metaverse fashion creators, and the results are as follows. First, the metaverse platform is a new level of virtual interaction where users and creators communicate through the convergence of augmented reality, lifelogging, mirror world, and virtual world. Second, most of the users of the metaverse platform are generation Z, and metaverse creators who make money by producing avatars or items, including fashion design, are emerging as a new job field. Third, many fashion brands created spaces on the Metaverse platform, collaborated with games, or opened fashion weeks for publicity, marketing, and sales. Fourth, as a 3D program for metaverse fashion creator activities, open-source software is easier and free of charge compared to programs for fashion design specialists, and most costumes can be reproduced, so it will be easier for fashion design majors to utilize.

• Journal of Power Electronics
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• 제15권2호
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• pp.530-543
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• 2015

Air-cooling method is adopted on the basis of the requirements for the thermal stability and convenient field use of an electrical source transmitter. The power losses of the transmitter are determined after calculating the losses of the alternating current (AC)-direct current (DC) power supply, the constant-current circuit, and the output circuit. According to the analysis of the characteristics of a heat sink with striped fins and a fan, the engineering calculation expression of the Nusselt number and the design process for air-cooled dissipation are proposed. Experimental results verify that the error between calculated and measured values of the transmitter losses is 12.2%, which meets the error design requirements of less than 25%. Steady-state average temperature rise of the heat sink of the AC-DC power supply is $22^{\circ}C$, which meets the design requirements of a temperature rise between $20^{\circ}C$ and $40^{\circ}C$. The transmitter has favorable thermal stability with 40 kW output power.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1996년도 춘계학술발표회논문집(2)
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• pp.467-472
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• 1996

This study discusses special aspects of severe accident related recriticality modeling and analysis in the Advanced Neutron Source (ANS) reactor.$^{1, 2)}$ The analytical comparison of three elements core to former two elements case is conducted including evaluation of suitable nuclear cross-section sets to account for the effects of system configulation, fuel and moderator mixture temperature, material dispersion and the other thermal-hydraulics. Three elements core ANS reactor is the alternative core design which was proposed as a modified core design, with three fuel elements instead of two, that would allow operation with only 50% enriched uranium (former uranium fuel is the baseline design value of 93%) A comprehensive test matrix of calculations to evaluate the threat of a criticality event in the ANS is described. Strong dependencies still on geometry, material constituents, and thermal-hydraulic conditions are verified. Therefore, the concepts of mitigative design features are qualified.d.

• JSTS:Journal of Semiconductor Technology and Science
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• 제12권1호
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• pp.88-98
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• 2012

In this paper, the relationship between the bandwidth (BW) and power efficiency of a source follower based (SFB) filter is quantitatively analyzed, and a design methodology for a SFB filter for optimized BW - power consumption is introduced. The proposed design methodology achieves a maximum BW at a target quality (Q) factor for the given power consumption constraint by controlling design factors individually. In order to achieve the target BW from the maximized BW, a tuning method is introduced. Through the proposed design methodology, a fourth order Butterworth filter was implemented in 0.18 ${\mu}m$ CMOS technology. The measured BW, power consumption, and IIP3 are 100 MHz, 33 ${\mu}W$, and 9 dBm, respectively. Compared with other filter structures, the measured results show high BW - power efficiency.

• 대한전기학회논문지:시스템및제어부문D
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• 제51권11호
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• pp.514-520
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• 2002

n industrial computer vision systems, the image quality is dependent on the parameters such as light source, illumination method, optics, and surface properties. Most of them are related with the lighting system, which is designed in heuristic based on the designer's experimental knowledge. In this paper, a design code by which the optimal lighting method and light source for computer vision systems can be found are suggested based on experimental results. The design coed is applied to the design of the lighting system for the transistor marking inspection system, and the overall performance of the machine vision system with the lighting system show the effectiveness of the proposed design code.

• 전력전자학회논문지
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• 제7권5호
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• pp.490-498
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• 2002

본 논문에서는 전압형 PWM 컨버터의 교류 입력측 LCL 필터의 설계기법을 제안한다 기존의 전압형 PWM 컨버터에서 전원계통으로 흘러 들어가는 스위칭 고조파전류를 억제하기 위해 교류 입력측에 LCL 필터를 설치하는 것은 매우 경제적이고 효과적인 방법이다 필터 커패시터로 스위칭 고조파전류를 흡수하며 공진을 억제하기 위해 수동 댐핑 저항을 이용한다 UPS용의 LCL 필터 구조 PWM 컨버터의 설계예시를 보였으며 제안한 설계기법의 타당성을 입증하기 위해 PSIM을 이용한 시뮬레이션을 행하였다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 하계학술발표대회 논문집
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• pp.202-208
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• 2008

The objectives of this study are to collect the population of each cooling system for gas and electric driven systems, and propose sample design for five cooling systems; ice storage systems, system air-conditioning system, turbo system as electric driven cooling systems, and absorption system and Gas driven Heat Pump (GHP) system as gas driven cooling systems. The sample design are carried out based on types of business, capacity, installation region and year. This study proposes criterion of the sample design for cooling systems for each energy source.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 춘계학술발표대회 논문집
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• pp.247-248
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• 2005

Human beings are perhaps most outstanding in longing for the beauty in order. The natural form have a power to be self-respect and also a repetitious pattern. Such natural forms will be the source of design, its constituent principles. Such natural forms will be the source of design, its constituent principle is that the minimum energy system constitutes the maximum and various systems, its forms come int being during the harmony of forces, and various systems, its forms come into being during the harmony of forces, and it has a light structure to surmount any influence resulting from the increasement of its size. Therefore, in organizing space, such order of natural forms will provide space with vitality and can express the relation of freedom as order.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 A
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• pp.345-347
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• 1996

Current source AC/DC converter with snubber energy recovery for high efficiency and high power converter was proposed. In this paper, design of the converter is presented. Voltage charged snubber condenser on commutation process is analyzed by theoretical analysis, simulation and experimental result.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1986년도 한국자동제어학술회의논문집; 한국과학기술대학, 충남; 17-18 Oct. 1986
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• pp.601-606
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• 1986

In this paper, two methods of power circuit simulation is described in order to obtain the back data for design of current source inverter. One is steady-state analysis by differential equations during the various operating modes. Another method uses switching function, which represents the switching pattern of inverter, and direct-guadrature model of induction motor. The results of digital computer simulation by two methods are compared with the results of laboratory test.