• 한국정보과학회:학술대회논문집
• /
• 한국정보과학회 2006년도 한국컴퓨터종합학술대회 논문집 Vol.33 No.1 (B)
• /
• pp.154-156
• /
• 2006

핸드폰이나 PDA가 보편화되면서 위치인식 기술의 중요성이 높아졌다. 자동차용 네비게이션, 물류시스템의 상품 운반현황 추적과 같은 상용 서비스들도 활성화되고 있다. 이러한 위치기반 서비스(LBS : Location based service)에서, 보다 개인화된 위치정보를 제공하기 위해서는 지도에 나타나지 않는 개인의 위치를 스스로 학습하고, 인지할 수 있는 시스템이 필요하다. 본 논문에서는 GPS나 Cell ID와 같은 기존 위치 인식 장비로부터 읽혀진 위치데이터를 스스로 학습하여, 사람이 이해하고 사용할 수 있는 장소라는 개념으로 확장하는 시스템을 구축하는 방범에 대해 연구하였다.

• 디지털산업정보학회논문지
• /
• 제8권3호
• /
• pp.23-31
• /
• 2012

With the advance of Smart TV technologies, TV watchers can enjoy the Internet and games while watching TV programs. Besides retrieving with some keywords in the Internet, people may want to access local information such as notifications from town, messages from children's schools, shopping information from local marts, and even reminder messages for visiting from hospitals while watching TV without using web-browser. In this paper, we introduce the daily life notification service scenarios and its functional and non-functional requirements. Furthermore, we also propose a system that provides the notification services, consists of smart TV apps and server systems. We also introduce the system architecture and the component design of the system. Our work will help smart TV service developers because this paper will give them some service scenarios, requirements, and system architecture and its component design.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2015년도 추계학술발표대회
• /
• pp.520-522
• /
• 2015

저전력 블루투스(BLE, Bluetooth Low Energy)를 이용해 사람이나 사물의 위치를 파악하는 근거리 무선 통신 기술을 제공한다. 과거에는 GPS로 건물 밖의 이동 데이터만 확인 가능 했다면, Beacon은 실내에서의 객체 이동 위치 데이터와 이동 경로를 측정 할 수 있는 기술이다. 본 애플리케이션에서는 BLE를 통한 비콘셀이 항시 ID를 주변으로 뿌리고, 이를 인식한 단말기가 수신한 ID를 통해 Beacon 서비스 서버에 접속하여 정보를 받는 방식으로, Beacon이 설치된 장소에서 특정 범위 안에 있는 단말기기는 Beacon 서버를 통하여 관광지의 정보 서비스를 제공한다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2009년도 춘계학술대회 논문집 특별세미나,특별/일반세션
• /
• pp.547-556
• /
• 2009

In this paper, we tried to find the engineering feasibility of the component functions of the seven selected application technologies which are going to be installed on the next generation high speed train as the IT and smart sensor application technologies. The component functions of the seven applications, including the "Emergency or reminder notification", were identified and analyzed. In order to justify the feasibility of applications development, effect analysis and sufficiency analysis were performed. In effect analysis, how each function has an effect on safety, convenience, and efficiency of the passengers and attendants was evaluated. In sufficiency analysis, the importance and implementability of each function as a component was evaluated. The feasibility analysis was focused on the technical aspects of the functions. The following work will be the settlement of the final applications that are going to be designed and implemented. This will be done by studying the strategic feasibility in relation to the service or business of the high speed train.

• 한국컴퓨터정보학회논문지
• /
• 제24권2호
• /
• pp.41-48
• /
• 2019

Digital image watermarking techniques have been studied in various fields in order to protect the copyright of multimedia contents mostly composed by images. JPEG compression is a representative copyright attack for image watermarking. The CRT-based watermarking methods in DCT domain have been studied, because these are robust for JPEG compression attack. In this paper, we propose a new method with improved performance compared with the existing CRT based methods in DCT domain. The proposed method selects the DCT block according to the denseness at the watermark insertion phase, and iteratively adjust the CRT Conditional coefficients at the watermark extraction. This paper shows that it is more robust for the JPEG compression attacks through experimental results.

• 경영과정보연구
• /
• 제39권1호
• /
• pp.15-34
• /
• 2020

체면민감성은 한국 사회에서 소비문화를 설명하는 중요한 개념으로 소비자의 구매행동에 크게 관여하고 있다. 본 연구는 소비자의 체면민감성이 충동구매성향 및 만족에 미치는 영향을 분석하고자 하였으며, 충동구매성향은 체면민감성이 만족에 미치는 영향관계에서 매개변수로 작용하는가에 대해 탐색하였다. 연구결과는 다음과 같다. 첫째, 체면민감성의 하위요인인 타인의식성과 형식격식성은 충동구매성향의 하위요인에 모두 유의한 영향을 미치는 것으로 나타났으며, 창피의식성은 충동구매성향의 하위요인에 부분적으로 유의한 영향을 미치는 것으로 나타났다. 둘째, 충동구매성향의 하위요인인 암시충동구매와 상기충동구매는 만족에 유의한 영향을 미치는 반면, 자극충동구매와 순수충동구매는 만족에 유의한 영향을 나타나지 않았다. 셋째, 체면민감성의 하위요인인 타인의식성은 만족에 유의한 영향을 미치는데, 형식격식성과 창피의식성은 만족에 유의한 영향을 미치지 않았다. 마지막으로 체면민감성과 만족의 영향관계에서 충동구매성향은 매개변수로 작용하는가에 대해 분석한 결과, 체면민감성의 하위요인인 타인의식성이 암시충동구매와 상기충동구매의 매개를 통해 소비자의 만족에 유의한 영향을 미치는 것으로 나타났다. 이를 통해 기업이나 마케터들에게 보다 의미있는 이론적 시사점, 실무적 시사점, 그리고 마케팅 전략 수립 등에 도움이 될 것으로 기대한다.

• 가정과삶의질연구
• /
• 제19권1호
• /
• pp.95-110
• /
• 2001

Recently a number of large discount store and those of its users was increasing. The purpose of this study is to investigate the tendency of impulse buying and analyzes factors which influence impulse buying. The data had been collected from questionaries with 474 consumers who visit large discount store. The major statistical methods used for data analysis are frequency, percentile, mean, t-test, multiple regression analysis, one-way ANOVA, and Duncans multiple range test utilizing SPSS Win pc+program. The results of this study are as follows : 1. The four different kind of impulse buying is measured. The overall level of impulse buying is 2.76. Suggestion impulse buying(M=3.19) is the highest, and the lowest is pure impulse buying(M=2.66). 2. In the area of demographic variables is significantly different in the age of twenties and thirties(p<.05). A visit frequency and membership. In the area of in-store variables is significantly different by all factors at impulse buying except waiting time. Especially, point-of-purchase(POP) advertisement and discount sale are very important variables. A visit frequency and membership are significantly different in the area of consumer-related variables. 3. Waiting time, a visit frequency, a POP advertisement, and a discount sale have the positive effects on overall impulse buying. Pure impulse buying is influenced by shopping list, POP advertisement and a stores atmospher. Buying companion, membership, kind of store and waiting time have the effect on reminder impulse buying. Suggestion impulse buying is influenced by school career, shopping list and POP advertisement. Planned impulse buying is influenced by sex, POP advertisement, buying companion and discount sale.

• 한국환경과학회지
• /
• 제13권5호
• /
• pp.449-467
• /
• 2004

Interannual and decadal scale changes in body size of Pacific saury, catch and catch per unit effort were examined to investigate the environmental effects on the stock structure and abundance in the Tsushima Warm Current region. Interannual changes in thermal conditions are responsible for the different occurrence (catch) rates of sized group of the fish. Changes in body size due to environmental variables lead the stock to be homogeneous during the period of high abundance, while one of the reminder cohorts supports the stock during the period of low level of abundance. Migration circuits of two cohorts of saury stock are hypothesized on the basis of short life span and spatio-temporal changes of the stock structure in normal environmental conditions. Changes in upper ocean structure and production cycles by the decadal scale climate changes lead changes in stock structure and recruitment, resulting in the fluctuation of saury abundance. Hypothesized mechanism of the effects of climate changes on stock structure and abundance is illustrated on the basis of changes in thermal regime and production cycle.

• Journal of Chest Surgery
• /
• 제24권11호
• /
• pp.1068-1073
• /
• 1991

Bleeding after open heart surgery with cardiopulmonary bypass was a cause of concern. requiring reexploration of the chest in approximately 8 percent of patients who have had operations on the heart. From April., 1983 to October, 1991, 16 patients[2%] out of 777 patients who underwent open cardiac surgery had emergency reexploration with bleeding at the Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital. In 12 cases[75%], reexploration was performed for continuous bleeding and the reminder[4 cases] were performed for suspected tamponade & hypotension. There were 9 cases[56%] of congenital heart disease and 7 cases of acquired heart disease. The mean blood loss were 997$\pm$472ml /sq. M in total cases and 1442$\pm$ 647ml /sq. M in cases repair of cyanotic heart disease. The mean interval till reoperation was 16.6hr [1hr~72hr] and 41 hr[12~72hr] in tamponade cases and 8.4hr[1hr~24hr] in continuous bleeding cases. The bleeding sites were identified in 7 cases: aortotomy site in 2 cases, ventriculotomy site, SVC, thymus, pleura and sternum wiring site in each other case. But no specific sites was found in the remaining 9 cases. The 8 cases had complications but all except 1 cases with hypoxic brain damage were recovered without sequale. We conclude that emergency thoractomy after open heart surgery may be lifesaving and-/or diminishing complications with bleeding if performed promptly with excessive bleeding, tamponade and unexpected hypotension.

• Clinical and Experimental Pediatrics
• /
• 제52권6호
• /
• pp.710-712
• /
• 2009

선천성 매독은 매우 드문 질환이기는 하나 심각한 질환을 유발할 수 있어 모자보건의 주요부분을 차지하고 있다. 4개월 남아가 좌측 팔의 운동장애로 내원하여 시행한 방사선 사진에서 상완골 골절이 발견되었으며 아동학대가 의심되어 시행한 추가 검사에서 선천성 매독으로 진단되었고 환아와 환아 부모에 대한 치료가 이루어졌다. 저자들은 이 환아의 진단과 치료과정에 대해 보고하면서 임산부와 신생아에 대한 매독선별검사의 중요성에 대해 강조하는 바이다.