• 한국ITS학회 논문지
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• 제10권2호
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• pp.66-76
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• 2011

관광지ITS는 해당 관광지역에 관련한 관광과 교통(명승지, 도로망, 주차, 소요시간 등)에 관한 정보를 제공하는 시스템이다. 하지만 관광주유행동의 관점에서 관광지 정보제공 시스템이 아직 충분히 고려되지 못하고 있다. 관광주유행동의 의사결정에 있어 다양한 정보 니즈가 존재하기 때문에 정보이용과 주유행동의 관련성이 매우 중요하다. 본 연구는 관광지ITS구축을 향한 기본적인 정보니즈 분석과 기존 주유행동 모형 재구축의 기초적 시사점 도출을 목적으로 후지5호 관광지의 정보이용과 주유행동의 관련성 분석을 수행하였다. 구조방정식을 이용한 관련성 분석결과, 주유행동의 단계에 따른 정보이용이 지역인지도와 주유행동에 영향을 미치고 있었다. 이는 관광주유행동분야에서도 정보에 의존하고 있다는 점을 밝히고 있다. 또한 이러한 결과는 관광지ITS에 관한 기초적 정보를 제시하고 있다.

• 무역상무연구
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• 제12권
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• pp.163-200
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• 1999

The CISG entrusts many problems to trade or practice : for example the problems which can't be compromised between civil law system and common law system ; the problems in which the application of usage or practice in universal ; the problems of rapid change according to trade circumstance. The purpose of this paper is to confirm whether the CISG is accomodating the usage or practice in its Text, and to find which topic is most closely related to usage or practice in CISG. The Article 9 in the CISG is a provision of usages or practices applicable to contract. But the problems of the CISG in the accomodation of usages or practices are that it lacks the definitions of ‘usage’ and ‘practices’, the CISG is not concerned with the validity of any usage according to Article 4, and the application of usage or practice may differ in litigation and arbitration The topics such as delivery of goods, payment of price and the transfer of risk are most closely related to usages and practices. The delivery of goods and the transfer of risk are determined by the trade terms like FOB or CIF. But the method of identification and the risk for the sale of goods in transit can't be determined by the trade terms in INCOTERMS(1990). So the CISG may serve as complementing role. In payment of price, the trade term does not refer to the time and place of payment. So the CISG may be the basis of interpretation. Likewise the usages and practices such as trade terms, UCP and so on, can be expected to play a significant role in complementing and interpreting the CISG.

• 디지털융복합연구
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• 제10권11호
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• pp.343-349
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• 2012

사용 조절 모델은 보호된 컨텐츠의 사용에 대한 포괄적인 기술을 허용하는 새로운 접근 조절 모델의 시초이다. 이 범례에서 객체로의 접근에 관련된 결정은 요청 시간에만 제한되어있지 않다. 그것은 보호된 객체의 사용과 결합되며 사용과 병렬식으로 진행되는 지속적 처리가 된다. 사용 조절의 실현은 오랫동안 보안 문서의 전파에 있어서 조절 능력을 잃게 되는 문제를 해결하려한 연구 과제이다. 클라우드 컴퓨팅의 발현으로 문서들이 클라우드에 저장이 되고 문서를 보거나 편집할 수 있는 프로세서들이 클라우드안에 상주하며 문서들은 브라우저와 같은 신 클라이언트에 의해 접근이 가능해진다. 우리는 그러한 시나리오가 이해 당사자의 정책에 기반을 둔 문서 사용 보안에 대한 사용 조절의 실행에 있어 이상적인 기회를 제공하는 사실에 주목한다. 본 논문에서는 클라우드 기반의 어플리케이션에서 더 나은 멀티미디어 컨텐츠를 실행하기 위한 멀티미디어 컨텐츠 관리(MCM)를 제안한다. 그리고 클라우드 컴퓨터의 발현과 사용을 통해 보안된 객체의 사용에 있어 매끄러운 조절을 제공하기 위한 강력한 구성을 설계한다. 우리는 이러한 실현을 위해 설계 원칙을 기술하고 제안 구조를 논한다.

• 한국콘텐츠학회논문지
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• 제15권5호
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• pp.142-150
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• 2015

본 연구에서는 IPTV 및 디지털케이블의 SVOD 서비스 홀드백 변경 전후의 VOD 이용 행태를 분석하여, 방송 콘텐츠 유통 전략 변화가 소비자의 VOD 이용행태에 어떠한 변화가 일어났는가를 연구하였다. 연구결과, SVOD 홀드백이 1주에서 3주로 변경된 후, 이용건수는 50%까지 감소한 반면, 월정액 상품인 PPM의 증가로 유료 VOD 매출은 증가하였다. 시계열 분석결과, SVOD 이용건수, 가입자당 SVOD 이용건수, 가입자당 PPV 이용금액은 통계적으로 유의미하게 감소하였고, 가입자당 VOD 이용금액은 유의미하게 증가하였다. 또한, 드라마 장르별 SVOD 이용은 미니시리즈, 주말드라마, 주말특별드라마, 시트콤 등의 이용이 유의미하게 감소하였다. 본 연구로 방송사의 콘텐츠 유통 정책 변화가 이용자의 VOD 이용행태에 어떠한 변화가 일어났는지를 실증적으로 파악할 수 있었으며, 방송사 및 플랫폼 사업자에게 VOD 유통전략 수립 및 VOD 이용 활성화를 위한 방향을 제시할 수 있을 것으로 기대한다.

• 한국생활과학회지
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• 제20권2호
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• pp.311-325
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• 2011

The purpose of this study was to analyze patterns of time usage of the retired elderly so as to improve their quality of life. The subjects of this study were 225 elderly people in Jeonnam Province. The statistics used for data analysis were frequency, percentage, mean, standard deviation, t-test, and multiple regression. The major findings were as follows : (1) The retired elderly spend more time in physiological activities and leisure, and there was no day difference in time use. (2) On weekdays, the variables affecting labor time were age, former job, health state, and education. On the weekends, education, health state, and former job had significant effects on the amount of time spent on labor. (3) The variables affecting participation and volunteer time were: monthly living expenses, age, spouse, former job, and house, on weekdays, and on the weekends, significant factors were spouse, age, and former job. (4) The variables affecting leisure time were education, age, monthly living expenses, religion, and economic state, on the weekdays, and on weekends, the significant factors were education, economic state, house, religion, and former job.

• Asian Pacific Journal of Cancer Prevention
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• 제15권6호
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• pp.2821-2823
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• 2014

Background: Esophageal and gastric cancer generally have a poor prognosis and may share common risk factors. It has been demonstrated that the pesticide usage may contribute to development of many cancer types. In this study, the relation between amount of pesticides used in agriculture and esophageal and gastric cancer incidence was researched. Materials and Methods: Findings from the data bank of the Ministry of Health Provincial Health Directorate Cancer Records Center between the years of 1998-2010 were used. All patients who were diagnosed with gastric and esophageal cancer histopathologically were included. Data for annual pesticide usage were obtained from Provincial Agriculture Directorate for the same time period. Statistical analysis was performed using the Spearman test. Results: One thousand eight hundred and ninety-six patients were involved in the study, 1,233 males (65%) and 663 females (35%), 230 with esophageal cancer (12.1%) and 1,666 with gastric cancer (87.9%). No statistically significant relation was apparent between pesticide amount used and esophageal cancer (p: 0.87). Conclusions: In our study, there was no relationship between pesticide usage and esophageal or gastric cancer. However, the time between pesticide usage and cancer development was not known, qualifying the comparison.

• 한국치위생학회지
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• 제18권4호
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• pp.597-605
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• 2018

Objectives: This study examined the relationship between oral health symptoms and Internet usage of Korean adolescents for the purpose of identifying problems associated with Internet usage of adolescents and of preparing measures that can raise awareness on the importance of their oral health management. Methods: The data used in this study is from the 2015 Youth Health Behavior Online Survey (YHBOS). Data from all survey participants (n=68,043) were used in the final analysis, using SPSS Ver. 22.0. General linear models were constructed to analyze the relationship between oral health symptoms and Internet usage of adolescents. Results: In the relationship between Internet usage and oral disease symptoms, those who brush less than once a day during weekdays and weekend tended to use Internet at the highest levels: 72.5%, 78.3% (p<0.001). The following variables were found to be related with spending longer time at Internet: male students (p<0.001), students in lower grades (p<0.001), students with lower performance (p<0.001), and those from families of lower economic level (p<0.001). Moreover, those who brush their teeth less than once a day and those who experienced oral disease symptoms, such as pain during chewing, throbbing and shooting pain, and bad breath in the past year spent longer time at Internet. Conclusions: The above findings show that Internet usage and demographic characteristics of the adolescents are associated with their oral health management. Therefore, guidance and interventions are needed for adolescents with problematic Internet use, while continued education is also needed to raise awareness about the importance of oral health management during adolescence.

• 정보보호학회논문지
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• 제14권4호
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• pp.97-110
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• 2004

현재의 웹 규모는 과거와 비교할 수 없을 만큼 복잡해지고 사용자의 패턴 또한 다양해지고 있다. 웹에 대한 공격은 점차 증가하고 있으며 이에 대한 탐지는 점점 어려워지고 있다. 이러한 웹사이트의 효과적인 관리를 위하여 시각화를 통한 사용자들의 사용패턴과 보안 측면에서 이상행위 발생에 대한 신속하고 적절한 정보전달이 필요하다. 본 연구에서는 이러한 필요성에 기반을 두어 웹 서버의 access log를 분석하여 웹 사용 현황과 이상행위에 대한 효율적인 실시간 시각화를 위한 요구사항을 제안하고 이를 만족시키기 위해 SAD Viewer라는 툴을 개발하였다. 그리고 실제 시그네춰 위반 공격, DoS 공격, 코드레드 공격, Whisker 공격에 대한 실험을 통하여 구현된 Viewer가 효율적으로 사용자들의 사용패턴과 이상행위를 시각화함을 보여주었다.

• 대한의용생체공학회:의공학회지
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• 제44권2호
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• pp.147-156
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• 2023

Efforts to employ smart home sensors to monitor the indoor activities of elderly single residents have been made to assess the feasibility of a safe and healthy lifestyle. However, the bathroom remains an area of blind spot. In this study, we have developed and evaluated a new edge computer device that can automatically detect water usage activities in the bathroom and record the activity log on a cloud server. Three kinds of sound as flushing, showering, and washing using wash basin generated during water usage were recorded and cut into 1-second scenes. These sound clips were then converted into a 2-dimensional image using MEL-spectrogram. Sound data augmentation techniques were adopted to obtain better learning effect from smaller number of data sets. These techniques, some of which are applied in time domain and others in frequency domain, increased the number of training data set by 30 times. A deep learning model, called CRNN, combining Convolutional Neural Network and Recurrent Neural Network was employed. The edge device was implemented using Raspberry Pi 4 and was equipped with a condenser microphone and amplifier to run the pre-trained model in real-time. The detected activities were recorded as text-based activity logs on a Firebase server. Performance was evaluated in two bathrooms for the three water usage activities, resulting in an accuracy of 96.1% and 88.2%, and F1 Score of 96.1% and 87.8%, respectively. Most of the classification errors were observed in the water sound from washing. In conclusion, this system demonstrates the potential for use in recording the activities as a lifelog of elderly single residents to a cloud server over the long-term.

• 한국IT서비스학회지
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• 제15권1호
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• pp.211-226
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• 2016

Most of the SNS users argue that they feel techno-stress or digital fatigue when they use SNS. As the relationships in the SNS expand, users may feel work overload, digital fatigue, and techno-stress which are caused by the time and effort for the retaining the existing relationships established via SNS. The SNS activities require users' time and effort to update their profiles and the current news of them, responding to online friends' contents. Thus, more relationships they have, more stress they can feel. This study tries to examine the key factors that can affect subjective well-being of individuals in Social Network Service (SNS) usage. Therefore, this study, based on the previous literature, investigates what the sources of SNS stress are and how SNS stress and flow affect subjective well-being of SNS users. Major findings of this study from an empirical analysis with 201 SNS user respondents who have accessed SNS at least one time within one month are as follows. First, perceived opportunity cost and reputation recognition in SNS usage were found to have significant effects on negative emotion. Second, individual's flow in SNS was significantly affected by challenges and interactions, and had a significant impact on positive emotion. However, SNS users' flow did not show a positive relationship with their satisfaction of life. This study contributes to the expansion of theoretical discussion about the effect of individual's SNS usage on quality of life in validating whether SNS usage can bring individuals subjective well-being. Implications of the study findings and future research directions are also discussed.