• Journal of the Korean Applied Science and Technology
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• v.38 no.6
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• pp.1643-1653
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• 2021

This study is to investigate the effect of beauty lifestyle on the quality of life of middle-aged women. For this study, 417 middle-aged women aged 35-65 years living in Seoul, Gyeonggi, Gwangju, Sejong, and Daejeon were conducted from February 27, 2021 to March 14, 2021. As a result of this study, the correlation of quality of life of middle-aged women according to beauty lifestyle was positively correlated in the order of show-off type, appearance-seeking type, practicality-seeking type, and fashion-seeking type. In addition, it was found that the practical pursuit of beauty lifestyle and the pursuit of show-off affect the quality of life of middle-aged women. Therefore, it is necessary to develop customized communication information and marketing strategies for beauty products based on the ambivalent perspective that pursues economic efficiency and luxury for the practical and flaunting types that can have a positive impact on the quality of life of middle-aged women.

• Journal of Fashion Business
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• v.27 no.5
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• pp.44-59
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• 2023

This study aimed to elucidate any differences in fashion consumption tendencies among fashion consumers according to their MBTI personality types and fashion brand sensibility (Chanel vs. Off-White). Differences in fashion consumption tendencies (fashion sensitivity, fashion innovativeness, and fashion ostentation) were determined based on two of MBTI's four bipolar indicators: extroversion-introversion, sensing-intuition, thinking-feeling, and judging-perceiving. It was found that intuitive consumers showed higher fashion innovativeness than sensory consumers. In addition, feeling-type consumers showed more fashion-sensitive and ostentatious fashion consumption tendencies than thinking-type consumers. Fashion brand sensibility acted as a moderator in the relationship between personality type and fashion consumption tendency. Especially, moderating effects of fashion brand sensibility and fashion consumption tendencies were evident in sensing-intuition and judging-perceiving types. Among intuitive consumers, those who preferred Chanel brand sensibility exhibited higher tendencies for fashion ostentation than those who preferred Off-White brand sensibility. However, sensory type consumers showed no difference in fashion ostentation based on their preferred fashion brand sensibility. Interaction effects regarding fashion sensitivity and fashion innovativeness were not found. Among perceiving-type consumers who preferred Chanel brand sensibility, high fashion sensitivity was evident. Conversely, judgment-type consumers who preferred Off-White brand sensibility showed high fashion sensitivity. Interaction effects concerning fashion innovativeness and fashion ostentation were not found.

• Journal of Institute of Control, Robotics and Systems
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• v.11 no.6
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• pp.518-523
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• 2005

Strip off-center is one of the major problems in hot strip mill line. The key to good centering is having good equipment, modern control systems, excellent maintenance and an understanding of milling process. Therefore, this study aims to develop a system that is useful for quantitative analysis of strip off-center. In this study, the measuring method of strip off-center was thoroughly studied and the exclusive control board to line scan camera were designed. Also, the manipulated type housing for line scan camera was developed to adjust initial parameters for strip width and center line. In order to check the accuracy and usefulness of the developed system, FM stand in $\#2$ Hot Strip Factory in Pohang Steel Works was targeted.

• Journal of the Optical Society of Korea
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• v.20 no.4
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• pp.481-487
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• 2016

This study presents a new optical system for a combiner-type head-up display (HUD) with a cylindrical lens as an asymmetrical aberration corrector, instead of a freeform mirror. In the initial design process based on off-axial aberration analysis, we obtain an off-axis two-mirror system corrected for linear astigmatism and spherical aberration by adding a conic secondary mirror to an off-axis paraboloidal mirror. Thus, since the starting optical system for an HUD is corrected for dominant aberrations, it enables us to balance the residual asymmetrical aberrations with a simple optical surface such as a cylinder, not a complex freeform surface. From this design process, an optical system for an HUD having good performance is finally obtained. The size of the virtual image is 10 inches at 2 meters away from a combiner, and the area of the eye box is 130×50 mm².

• Journal of the Korean Institute of Telematics and Electronics A
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• v.31A no.6
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• pp.9-17
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• 1994

ATM (Asynchronous Transfer Mode) has a fixed-length packet transport scheme. It is one of the promising proposals in B-ISDN.Since the packet length is fixed, it can be potentially to perform the various service to users. In this paper, a queueing model for an ATM multip`exer loaded by CBR and ON/OFF input sources is considered, and the two-queue system which each type of input sources has a queue with a finite capacity is analyzed. The cell loss probabilities for a performance measures of ATM multiplexer are derived, and are also evaluated through numerical examples. As a result, the cell loss probability of ON/OFF sources for the queue size is rapidly decreased when the multiplexed number and burstiness are increased. Since cells of the CBR source have lower priority than cells of the ON/OFF source, cell loss probabilities of CBR sources are accordingly high independently of CBR cell arrival rate when the number of CBR sources is large.

• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.1
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• pp.190-195
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• 2004

An exhaust brake system is composed of a gate valve, a pneumatic cylinder and an on-off solenoid valve. An on-off solenoid valve which is a key component of the exhaust brake system ought to have characteristics such as high reliability and long life for reducing the foot brake and tires damage, and for driver's fatigue relief of middle/large size vehicles running a long distance. In this paper, an on-off solenoid valve which is used for vehicle brake system was studied. For the performance evaluation of the on-off solenoid, electromagnetic characteristics and dynamic characteristics are analyzed. On the basic study for the performance improvement of exhaust brake system, pneumatic circuit and pneumatic valve of on-off solenoid type were suggested and the performance of pneumatic valve through the test procedure was evaluated.

• Journal of the Korean institute of surface engineering
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• v.39 no.4
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• pp.153-159
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• 2006

Nanodiamond films were deposited on Si substrate by introducing a time dependent on/off modulation of $CH_4\;and\;O_2$ flows in a vertical-type microwave plasma enhanced chemical vapor deposition system. Surface morphology and diamond quality of the film were investigated as a function of the on/off modulation time interval. The diamond nucleation density on the substrate was enhanced under low temperature and low pressure condition. In addition, the diamond nucleation density was enhanced by increasing the on/off modulation time interval. Enhanced diamond quality was noticeable under the condition of a longer on/off modulation time interval. It was suggested that the nanodiamond nuclei formed the cluster formation.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.06a
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• pp.138-139
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• 2007

탄화규소반도체소자는 wide band-gap 반도체 재료로 고전압, 고속스위칭 특성이 우수하여 차세대 전력반도체소자로 매우 유망한 소자이다. 이러한 물리적 특성으로 전력변환소자인 고전압 MOSFET 소자를 개발하기 위한 연구가 활발히 진행되고 있다. 그러나 MOS 소자에서 가장 중요한 게이트 산화막의 특성이 소자에 적용하기에는 그 특성이 많이 취약한 상태이다. 따라서 이러한 단점을 해결하여 고전압 전력변환소자로 적용하기 위하여 게이트 산화막이 필요없는 JFET 소자가 많이 연구되고 있다. 본 논문에서는 JFET 소자를 normally-off type으로 동작시키기 위하여 게이트의 구조, 도핑농도 및 게이트 폭을 조절하여 simulation를 수행하였다. 케이트의 농도 및 접합깊이에 따라 normally-on 또는 off 특성에 큰 영향을 미치고 있으며 게이트 트렌치구조의 깊이에 따라서도 영향을 받는다. 본 simulation 결과 최적의 트렌치 길이, 폭 및 농도로 소자를 구성하여 $1.3m{\Omega}cm^2$의 온-저항 특성을 얻을 수 있었다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.04a
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• pp.343-350
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• 2004

LNGC suffers a great heat inflow during navigation and this heat inflow inevitably boils off the LNG. The boiled off gas(BOG) is normally consumed as a fuel for ship's engine. The boiled off LNG means a loss of cargo during transportation from the viewpoint of shipper. Therefore, a contract between shipper and ship operator is made on the limit of boiled off rate(BOR) under 0.15 ％／day based on laden voyage. This contract on BOR limit requires that ship's officer has a correct knowledge on BOR for his ship. But, in most cases ship is operated based on only officer's experiences. In this study, author presented a simple model to predict the boiled off gas(BOG) during navigation based on the existing precision heat exchange design technology about the heat distribution on the hull and heat inflow from outside through the hull. The BOG is calculated for ballast and laden voyage based on the actual weather conditions and verified by comparing with the measured BOG for the study ship. The study ship is a membrane type LNGC which is now servicing in Middle east route. Thus, the BOG prediction method which is presented in this study is expected to be used for an useful tool to manage the BOG in now servicing LNGC.

• The Korean Journal of Physiology and Pharmacology
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• v.13 no.5
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• pp.393-400
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• 2009

NO released by myenteric neurons controls the off contraction induced by electrical field stimulation (EFS) in distal esophageal smooth muscle, but in the presence of nitric oxide synthase (NOS) inhibitor, L-NAME, contraction by EFS occurs at the same time. The authors investigated the intracellular signaling pathways related with G protein and ionic channel EFS-induced contraction using cat esophageal muscles. EFS-induced contractions were significantly suppressed by tetrodotoxin ($1\;{\mu}M$) and atropine ($1\;{\mu}M$). Furthermore, nimodipine inhibited both on and off contractions by EFS in a concentration dependent meaner. The characteristics of 'on' and 'off contraction and the effects of G-proteins, phospholipase, and $K^+$ channel on EFS-induced contraction in smooth muscle were also investigated. Pertussis toxin (PTX, a $G_i$ inactivator) attenuated both EFS-induced contractions. Cholera toxin (CTX, $G_s$ inactivator) also decreased the amplitudes of EFS-induced off and on contractions. However, phospholipase inhibitors did not affect these contractions. Pinacidil (a $K^+$ channel opener) decreased these contractions, and tetraethylammonium (TEA, ${K^+}_{Ca}$ channel blocker) increased them. These results suggest that EFS-induced on and off contractions can be mediated by the activations Gi or Gs proteins, and that L-type $Ca^{2+}$ channel may be activated by G-protein ${\alpha}$ subunits. Furthermore, ${K^+}_{Ca^-}$ channel involve in the depolarization of esophageal smooth muscle. Further studies are required to characterize the physiological regulation of $Ca^{2+}$ channel and to investigate the effects of other $K^+$ channels on EFS-induced on and off contractions.