• Journal of the Korean Society of Costume
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• v.56 no.2 s.101
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• pp.32-44
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• 2006

Denim has been one of the most favored clothing item among young people regardless of regional difference. This study compared the styling of women's denim fashion in two Asian metro-cities, Seoul and Beijing, in order to understand how differ the fashion taste of both cities. Data was collected by taking photos of young women who wear denim clothing at the main streets of downtowns or famous shopping areas of both cities from the July of 2004 till the April of 2005. A total of 524 photos(Seoul 242, and Beijing 282) were put into content analysis. Results showed that there were several similarities and differences in denim styling between two cities in terms of the most widely worn denim items and the coordinate items, and the favored colors, silhouette, details of denim pants and the coordinate items. In Seoul, women favored denim look with little detail, fitted silhouette, and in more formal image. A few denim styles prevailed in each season which reflect current denim fashion trends. Meanwhile a wide variety of denim styles were found at Beijing without dominant denim trends, which means Beijing women put more emphasis on personal expression of their fashion taste instead of just following fashion trends.

• IEIE Transactions on Smart Processing and Computing
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• v.5 no.2
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• pp.100-106
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• 2016

Spectrum sensing is an integral part of cognitive radio, which seeks to address the perceived spectrum scarcity that is caused by inefficient utilization of the available spectrum. In this paper, a spectrum sensing system using energy detection for analog TV and FM broadcast transmitters as well as modified Integrated Services Digital Broadcasting Terrestrial (ISDB-T) signals is implemented on a software-defined radio platform using GNU' Not Unix (GNU) radio and the N200 Universal Software Radio Peripheral (USRP). Real-time implementation and experimental tests were conducted in Metro Cebu, a highly urbanized area in the southern part of the Philippines. Extensive tests and measurements were necessary to determine spectrum availability, particularly in the TV band. This is in support of the Philippine government' efforts to provide internet connectivity to rural areas. Experimental results have so far met IEEE 802.22 requirements for energy detection spectrum sensing. The designed system detected signals at -114 dBm within a sensing time of 100 ms. Furthermore, the required $P_d({\geq}90)$ and $P_{fa}({\leq}10)$ of the standard were also achieved with different thresholds for various signal sources representing primary users.

• International Journal of Costume and Fashion
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• v.6 no.2
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• pp.28-42
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• 2006

In present modern society, media contributes more to the constructing of personal identities than any other medium. Music video, a postmodernism branch among a variety of media, offers a complex experience of sounds combined with visual images. In particular. fashion in music video helps conveying contexts effectively and functions as a medium of immediate communication by visual effect. Considering the socio-cultural effects of music video. gender identity represented in fashion in it can be of great importance. Therefore, this study is geared to the reconsidering of gender identity represented through costumes in music video by analyzing fashions in it. Gender identity in socio-cultural category is classified as masculinity, femininity, and the third sex. By examining fashions based on the classification. this study will help to create new design concepts and to understand gender identity in fashion. The results of this study are as follows: First. masculinity in music video fashion was categorized into stereotyped masculinity, sexual masculinity. and metro sexual masculinity. Second, femininity in music video fashion was categorized into stereotyped femininity. sexual femininity, and contra sexual femininity. Third, the third sex in music video fashion was categorized into transvestism, masculinization of female, and feminization of male. This phenomenon is presented into music videos through females in male attire and males in female attire. Through this research, gender identity represented in fashion of music video was demonstrated, and the importance of the relationship between representation of identity through fashion and socio-cultural environment was reconfirmed.

• Journal of the Korean Society of Industry Convergence
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• v.23 no.1
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• pp.57-64
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• 2020

The construction market became generally opened to overseas and the domestic construction industry has competed with the international construction enterprise of which technical knowledge is superior. In order to compete with the international construction companies, domestic construction industry needs more continuous promotions on the research and development for improving the level of technique of the construction engineering to meet the international norm. This study aims to suggest the better standards of engineering output such as drawings and specifications to correspond the changing integration system and bidding system in preparation for growing international competition. The study starts with comparison and analyses of domestic and international methods and standards for preparing design drawings. And it continues to delve into actual drawing preparation practices, especially focusing on the ones for road and subway construction. Finally, the study presents a better way of the standardization of the main drawings such as general plan, longitudinal drawing, cross section, structural drawings and temporary structure for new bidding systems of historical cost estimation and whole specification tender and for promotion of international competitiveness.

• International Journal of Railway
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• v.5 no.2
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• pp.77-83
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• 2012

Railroad signaling systems are to control intervals and routes of trains. There are ATS, ATP, ATO and ATC system. Trains are operated in the section which is met on the signaling system because various signaling systems are used in Korea. Hence, trains are not operated in the section which is used in the other signaling system. To solve this problem, recently combined on-board system has been developed. The combined on-board system designed by doubling the ATS, ATP and ATC system to ensure the safety of system. The inductance of antenna is change and in return the resonance frequency of antenna is varied by the electromagnetic induction. Therefore, the information signal is not received exactly in the combined on-board system and in return accidents between trains occur. In this paper, electric model of the combined on-board system for considering the ATS and ATP antenna is presented. Moreover, the mutual inductance including the distance between the ATS and ATP antenna is calculated. As a result of the frequency response of the antennas, the mutual inductance met on operation range of resonance frequency is defined.

• Journal of the Korea Fashion and Costume Design Association
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• v.9 no.3
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• pp.99-113
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• 2007

This study aims to investigate the concepts and characteristics of Metrosexual and Ubersexual image which are the recent fashion phenomena representing the lifestyles of comtemporary men, and to analyze the design of contemporary men's fashion based on the represented characteristics of these sexual images. To accomplish these ends, various related publications, articles and papers, divers serial publications, and numerous internet articles are collectively reviewed for theoretical studies, and design analysis are conducted for content analysis(style, color, material, detail, etc) using photo data taken from the collections from 2001 through 2006. The results of this study shows that recent appearance of Metrosexual and Ubersexual fashion image represents the change of aesthetic standards in the contemporary society. With the influence of sociocultural phenomena which allow the pursuit of individual personality, the contemporary men, instead of expressing the socialized sexual identity, came to acquire the freedom of sexual identity which represents their personal desires. As an expression of hmnan will to pursue unrestricted sensibility and aesthetic sense, these sexual phenomena of Metrosexual and Ubersexual will be reinterpreted and reappear in various forms as the social atmosphere and aesthetic standards changes.

• Journal of Korean Library and Information Science Society
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• v.49 no.4
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• pp.73-91
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• 2018

This study attempts to suggest effective strategies for small library services in Busan metro area. There has been a steady increase of small libraries that provide user friendly services for local residents. Local governments that is interested in such roles as community spaces based on the familiarity and flexibility of small libraries keep building and operating small libraries in Korea. This study, in this regard, surveyed the small libraries established and operated by a specific local government and analyzed the significance and problems in managing small libraries. In this study, we obtained data from observations, dialogues with managers and users through actual visit surveys to find out the limitations and difficulties of local small libraries.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.45 no.2
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• pp.55-60
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• 2008

Packet-switched wavelength division multiplexing (WDM) ring networks have been extensively studied as solutions to the increasing amount of traffic in metropolitan area networks, which is widely expected to be a mix of unicast and multicast traffic. In this paper we study the fairness between unicasting and multicasting in slotted packet-switched WDM ring networks that employ a tunable transmitter and fixed tuned receiver at each node and a posteriori buffer selection. We find that single-step longest queue selection algorithm generally results in unfairness between unicasting and multicasting or a lilted relative priority for multicast vs. unicast traffic. We present the various virtual output queue structures and their performance.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.6
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• pp.294-301
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• 2013

The particle matter concentrations in the subway stations should be monitored and controlled for the health of commuters on the subway system. Seoul Metro and Seoul Metropolitan Rapid Transit Corporation are measuring several air pollutants regularly. In this paper, the reliability of the cheap instruments using light scattering method is improved with the help of a linear regression analysis technique to measure the $PM_{10}$ concentrations continuously in the subway stations. In addition, a monitoring system is implemented to display and record the data of $PM_{10}$, $CO_2$, humidity, and temperature. To transmit and receive these measured sensor data, CDMA M2M wireless communication method is applied.

• Transactions of Materials Processing
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• v.14 no.3 s.75
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• pp.251-256
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• 2005

3-D micro structures and micro tools were fabricated using Micro Electrical Discharge Machining (MEDM). To make micro structures, micro electrical discharge milling process was applied. During micro electrical discharge milling, electrode (tool) worn in the both axial and radial direction. To compensate tool wear which has significant influence on machining accuracy, machining path overlapping was proposed. Machining characteristics of micro electrical discharge milling was investigated in considering of depth of cut and capacitance of discharge circuit. Micro complex shaped tools were also fabricated using REDM (reverse electrical discharge machining). Sacrificial electrodes were machined through electrical discharge milling process and were used as electrode to make micro tools. Using this process several micro tools shape of 'ㄷ', 'ㅁ' and 'o' were fabricated. With these complex shaped tools, micro machining was successfully applied repeatedly.