• 한국항행학회논문지
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• 제20권2호
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• pp.116-126
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• 2016

본 논문에서는 선내에서 수집되는 데이터를 이용하는 선박과 육상의 어플리케이션 서비스의 효율적인 데이터 통합관리를 위한 선박용 어플리케이션 시스템을 설계하고 모듈을 구현하였다. 선박용 어플리케이션 시스템은 선내 수집 데이터를 활용하는 선박과 육상의 서비스를 지원하고 개별 장비간 원활한 연동 서비스를 제공하기 위하여 IALA에서 논의되고 있는 데이터 공유 시스템 모델과 ISO 16425의 XML 구조를 적용하였으며, 시스템 운영을 위한 공통 모듈과 데이터 수집 및 통합관리를 위한 윈도우 서비스, 관리를 위한 웹서비스 모듈을 구현하였다.

• 수산해양교육연구
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• 제28권5호
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• pp.1508-1516
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• 2016

This research intended to analyse the perception level of seafarers in order to propose enhancement of health management for seafarers and improvement of marine telemedicine assistance system. To this end, questionnaire survey was conducted for 422 seafarers in relation to current status of utilizing Emergency Medical Advice by radio(EMAR). By trading area, experience of benefiting EMAR by coastal seafarers was higher than that of ocean-going seafarers. By kinds of ships the rate of utilizing EMAR by fisherman was higher than that of seafarers of merchant ships. The level of satisfaction on the EMAR was 14.9% and regarded to be very low while the answering rate of necessity and urgency toward introducing marine telemedicine assistance system for the future through utilizing telemedicine equipment what is called U-helath including motion pictures information was very high. The answering rate of willingness to provide their personal health information positively when introducing marine telemedicine system was very high(97.4%). It is thus necessary to permit marine telemedicine service system, establish service model of marine telemedicine through conducting demonstration projects, promote marine telemedicine actively at the level of government, etc.

• 한국생활과학회지
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• 제5권2호
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• pp.109-121
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• 1996

The purpose of this study are (1) to examine the reality of contacting with fashion catalogues, (2) to examine the consumer's attitude towards fashion catalogues, (3) to examine the correlation between consumer's attitude towards fathion catalogue by sex and age. It was found that, concerning frequency of contacting with fashion catalogues, women contact with them more frequently than men, and lower ages than higher ages. Also, it was shown that, both man and woman with merchandise catalogues, lower ages with merchant catalogues, and higher ages with mail order catalogues. With regard to methods of contacting with catalogue, it was found that men come to contact mainly through mail, women through the displayed goods in the sales shops, lower ages through the displayed goods in the sales shops and higher ages through mail. Concerning the consumer's attitude towards fashion catalogues, meaningful difference was shown in interesting level, attention level, information offering level and information utilizing level by sex. By age, meaningful difference was shown in interesting level, attention level, information offering level, information reliability level, information utilizing level and purchasing satisfying level. Regarding correlation between consumer's attitude towards fashion catalogues by sex, meaningful correlation was shown between all consumer's attitude. By age, meaningful correlation was not found, between 36 to 45 years old, between information reliability level and interesting level, and attention level, and information offering level, and information utilizing level but meaningful correlation was shown between consumer's other attitude.

• International Journal of Contents
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• 제2권2호
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• pp.6-9
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• 2006

The style of war in the $21^{st}$ century became digitalized cooperative union tactic, which relies heavily on the system providing real time information. Critical information is provided during the war from sensing to shooting. Therefore, epochal development in observation, reconnaissance (ISR), commanding (C4I) and precision strike (PGM) are necessary. Application of ubiquitous computing and network technologies in national defense is necessary for carrying out with various types of wars in the $21^{st}$ century. Therefore, the author wants to research core technology sector that can be developed and applied in preparation of ubiquitous national defense era. Also plans for applying recent u-Defense technology to the military sector had been suggested. Particularly, the author have suggested plans for utilizing combined future information technologies such as ad-hoc network, RFID for the logistic supply in construction of u-Defense system. By utilizing these information technologies, combat power and strategic capabilities of the military can be enhanced greatly.

• Journal of Electrical Engineering and Technology
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• 제11권4호
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• pp.1020-1026
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• 2016

Motion estimation (ME) algorithms supporting quarter-pixel accuracy have been recently introduced to retain detailed motion information for high quality of video in the state-of-the-art video compression standard of H.264/AVC. Conventional sub-pixel ME algorithms in the spatial domain are faced with a common problem of computational complexity because of embedded interpolation schemes. This paper proposes a low-complexity sub-pixel motion estimation algorithm in the transform domain utilizing shifting matrix. Simulations are performed to compare the performances of spatial-domain ME algorithms and transform-domain ME algorithms in terms of peak signal-to-noise ratio (PSNR) and the number of bits per frame. Simulation results confirm that the transform-domain approach not only improves the video quality and the compression efficiency, but also remarkably alleviates the computational complexity, compared to the spatial-domain approach.

• Journal of Multimedia Information System
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• 제5권4호
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• pp.245-256
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• 2018

This study estimated rainfall information more effectively by image signals through the information system of weather radar. Based on this, we suggest the way to estimate quantitative precipitation utilizing overlapped observation area of radars. We used the overlapped observation range of ground hyetometer observation network and radar observation network which are dense in our country. We chose the southern coast where precipitation entered from seaside is quite frequent and used Sungsan radar installed in Jeju island and Gudoksan radar installed in the southern coast area. We used the rainy season data generated in 2010 as the precipitation data. As a result, we found a reflectivity bias between two radar located in different area and developed the new quantitative precipitation estimation method using the bias. Estimated radar rainfall from this method showed the apt radar rainfall estimate than the other results from conventional method at overall rainfall field.

• 기술사
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• 제29권5호
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• pp.99-103
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• 1996

In this paper we discuss Gigabit information communication service utilizing Gigabit information super-highway, multimedia data processing technology for the services, multimedia communication protocol for transmitting multimedia data and construction of Gigabit information communication network which can be accessed everywhere and present items which should be tactically prepared for high-level information society of the 21 st century.

• 복식
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• 제56권1호
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• pp.56-69
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• 2006

The purposes of this study were to identify cosmetics purchasing behavior according the 20-30 year old men's lifestyle. The results were as follows; 1. The factors of men's lifestyle were sense of fashion, participation of social activities, use of web-based information, sense of androgyny, economical efficiency, provision of web-base information, sport activities, and pursuit of change, and they were segmented into a passive stagnant group, a economic web-base information utilizing group, a positive social activity participation group, and a sensitive appearance change pursuit group. 2. Passive stagnant group used less information sources patronized cosmetics specialty store, did not select their cosmetics by themselves, and spent less for their cosmetics. Economic web-base information utilizing group used information sources positively, patronized cosmetics discount store or internet shopping, and spent less for cosmetics. Positive social activity participation group patronized cosmetics specialty store or discount store, but did not select cosmetics by themselves. Sensitive appearance change pursuit group patronized department store or internet shopping for cosmetics, selected cosmetics by themselves, and spent more. 3. Passive stagnant group showed a tendency of older, less educated, and lower incomes, but economic web-base information utilizing group were among the age of 20's, lower educated, and the unmarried with average incomes. Positive social activity participation group showed a tendency of older, highly educated, and the married with jobs, but sensitive appearance change pursuit group were among the age of 20's and university students with more incomes and pocket money.

• Spatial Information Research
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• 제23권3호
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• pp.67-77
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• 2015

본 연구는 IPCC의 2003 우수실행지침에 따른 국제기준의 온실가스 인벤토리 LULUCF 부문의 통계 구축방안제시를 목적으로 진행되었다. 우리나라의 온실가스 인벤토리 LULUCF 부문 통계는 현재 전용된 정보를 구축하지 못하고 있는 문제점이 있는 것으로 분석되었으며, 선행연구들도 각 카테고리 내에서의 정보구축에 한정하고 있었다. 이에 경기도를 사례로 위성영상, KLIS, UPIS 등의 각종 정보를 활용하여 LULUCF 부문의 변화정보를 분석하였다. 그 결과 LULUCF 항목별 분류체계 마련, 위성영상을 활용한 통계 정확도 향상, 구축방법에 대한 추가적 연구가 필요하다는 시사점을 도출하였다. 이러한 이론적 배경 및 선행연구, 사례분석을 통해 향후 국가 온실가스 인벤토리 LULUCF 부문의 체계적 통계구축을 위해 과거 20년간의 전용정보의 체계적 구축, 위성영상과 각종 토지정보체계를 활용한 토지이용 변화 매트릭스 구축방안을 제시하였다. 이러한 연구결과를 참조로 온실가스 통계 구축을 위한 다양한 연구가 지속적으로 이루어져야 할 것이다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권7호
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• pp.3351-3369
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• 2017

In recent years, datacenters, network devices and computers have proliferated. The power consumed by information and communication technology (ICT) devices has inflated in an extraordinary manner. Green communication has emerged as a new approach to reduce and optimize power consumption in ICT sector. Many methods and protocols have been proposed and implemented to achieve green communication. Nevertheless, the increase of power consumption remains a problem. In this work, we attempt to reduce and optimize power consumption of network devices in datacenters environment utilizing software defined network (SDN) paradigm. To gain more insight of the power consumption requirements of network switches, a power measurement system is constructed to measure power consumption levels of network devices. Subsequently, we propose a duplication resolver algorithm (DRA) to power off/on switches reactively. DRA algorithm reduces the required time by switches to construct their flow tables after rebooting. To this end, DRA-based external circuit has been constructed utilizing Ethernet module and an Arduino kit to control power supplies of network devices. To facilitate our work, a testbed has been constructed utilizing Ryu SDN controller, HP2920-24G switches and Arduino kits. Our results show that DRA algorithm can reduce both the power usage and start-up time delay of network switches after failures.