• 전자통신동향분석
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• 제38권2호
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• pp.12-25
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• 2023

Positioning, navigation, and timing information has become a key element in the national core infrastructure and for emerging technologies, such as autonomous driving, lunar exploration, financial systems, and drones. Therefore, the provision of that information by navigation satellite systems is becoming increasingly important. Existing systems such as GPS (Global Positioning System), GLONASS (GLObal NAvigation Satellite System), and BDS (BeiDou Navigation Satellite System) also provide augmentation, safety-of-life, search & rescue and short message communication and authentication services to increase their competitiveness. Those services and the signals generated for their provision have their own purpose and requirements. This article presents an overview of existing or planned satellite navigation satellite system services and signals, aiming to help understand their current status.

• International Journal of Knowledge Content Development & Technology
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• 제7권2호
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• pp.21-40
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• 2017

Considering the need for quality health information and resultant health care services in any society, this study was carried out to look into the status of library and information resources and services provided by medical libraries in Enugu State, Nigeria. The main objective of the study was to find out the information resources and services available for medical library users towards quality health care provision. Five (5) medical libraries of major teaching hospitals were used for the study with 980 registered users as the study population from where 245 users were sampled. Observation checklist was used to collect data on resources while questionnaire was used to collect data from the respondents on the services provided. The Medical Library Association Standard guided the analysis of data from observation while frequency counts and mean scores were used to analyze data from the questionnaire. Major findings showed that even though some of the required resources and services are available and provided the medical libraries, most of the required resources and services are not adequately provided by these libraries.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권2호
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• pp.668-685
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• 2019

Provision of higher throughput without sacrificing consistency guarantees in replication systems is a critical problem. In this paper, we propose a novel approach called Bidirectional Chain Replication (BCR) to improve throughput in traditional Chain Replication (CR) through better utilization of computing and communication resources of the chain. Unlike CR where the whole replicated data store is treated as a single unit, in BCR the replicated shared data at each server in the chain is split into two disjoint Logical Partitions ($LP_1$, $LP_2$). This forms two chains running concurrently on the same hardware in two opposite directions; the first chain ($CR_1$) exclusively manipulates data objects in $LP_1$, while the second chain ($CR_2$) exclusively manipulates data objects in $LP_2$, therefore, conflict is avoided and concurrency is guaranteed. The simultaneous employment of these two chains results in better utilization of hardware in the sense that the two chains can evenly share the workload, hence, throughput can be improved without sacrificing consistency. Experimental results showed an improvement of approximately 85% in throughput of BCR over CR.

• 한국정보시스템학회지:정보시스템연구
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• 제14권3호
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• pp.105-108
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• 2005

A comparison between various proposals for the provision of certified email is presented. In order to place the proposals in context, an outline of the basic principles of secure email is provided, as far as possible separating the issues of confidentiality, integrity and authenticity.

• 복식
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• 제57권3호
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• pp.78-89
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• 2007

The objectives of this research were to investigate the relationships between purchase motives and post-purchase satisfaction of cosmetics at internet shopping malls, and to reveal how cosmetic purchase motives and demographic variables influence to the post-purchase satisfaction. Subjects were 202 females in Seoul who had experiences of cosmetic shopping at internet. Five dimensions of cosmetic purchase motives at internet shopping malls were derived by factor analysis: 'information provision', 'service/quality', 'time saver', 'use convenience', and 'economical efficiency'. Consumers showed relatively high cosmetic purchase motives at internet shopping malls because the prices of on-line shopping mall products were cheaper than those of off-line, and because it was easy to compare various products at internet shopping malls. The motive of 'information provision' had significant positive relationships with the satisfaction of price, quality, color, volume, and skin suitability of cosmetics. The motive of 'time saver' and 'use convenience' had positive relationships with the satisfaction of price and quality. The motives of 'service/quality' and 'use convenience' were higher in career women than in college women. The middle class consumers and the consumers who use internet more had a high 'information provision' motive in shopping cosmetics at internet. The post-purchase satisfaction of cosmetics was influenced most by the experience postscripts and next by economical efficiency, frequency of access to the internet cosmetic malls, and social class(-) in order.

• 한국지리정보학회지
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• 제16권1호
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• pp.26-35
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• 2013

본 연구는 아시아 각국 중 활발히 경관계획이 수립되고 있는 일본과 우리나라를 대상으로 경관데이터베이스를 구축함과 동시에 경관제도를 비교하고 분석함을 목적으로 했다. 경관법 제정 후의 우리나라의 경관법(2008.3)과 일본의 경관법(2004.6) 그리고 그 조례와 시행사례를 한국과 일본을 대상으로 비교하여 특징을 파악했다. 일본에서는 2010년 12월 1일 현재 472개의 지자체가 경관행정단체이며 우리나라는 2010년 3월 1일 현재 83지자체가 경관행정단체임을 알 수 있었다. 한일 양국의 경관법은 전체적으로 보면 유사한 구조로 구성되어 있으나 우리나라의 경우 부칙과 벌칙규정이 없고 일본의 경관법에는 경관지구조항이 있다는 점 등이 특징이라 할 수 있다. 본 연구에서 도출된 결과들은 앞으로 동아시아지역의 경관계획 또는 경관제도의 확립 및 발전에 기초자료로서 활용할 수 있으리라 기대된다.

• 패션비즈니스
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• 제8권5호
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• pp.20-30
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• 2004

The subjects of the study were randomly male and female college students in Seoul. The 123 subjects had experience of purchasing clothes from Internet shopping mall. To analyze SPSS(ver 10.0) was used $X^2$, ANOVA, Correlation analysis, Multiple regression and Cronbach $\alpha$ were performed for verification. For significance judgement, .05 was used, which is commonly used in social science. The result of this study were most of them purchased closes once or twice a year through Internet shopping mall. The most popular item was T-shirts or sweater and money spent per visit was less than 100,000 won. Those who have used Internet for a longer period tend to purchase more items tend to purchase more frequently. Subjective satisfaction which is a sub factor of the product purchase and product purchase times have significant correlation and total purchase amount and the sub factors of purchase satisfaction. There is significant correlation among product information provision, which is a sub factor of purchase feature and product information provision, marketability, convenience of delivery, additional features and subjective satisfaction which are sub factors of purchase satisfaction. Clothing purchase factors influencing on subjective satisfaction are product information provision and marketability and marketability is the stronger influencing feature of the two.

• 성인간호학회지
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• 제25권2호
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• pp.231-239
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• 2013

Purpose: This study was conducted to identify the effects of video-audio information provision on physical discomfort, anxiety and nursing satisfaction of the clients for gastroscopy. Methods: The study design was nonequivalent control group pre-post test design. The subjects were 50 patients who visited H hospital health examination center for gastroscopy. Video-audio information developed by the authors was used as educational material for the treatment group. The data were collected between September 15 and November 15, 2010. The study instruments were the State-Trait Anxiety Inventory, the Physical Discomfort Scale, and the Nursing Satisfaction Scale. Results: The level of anxiety and physical discomfort in the treatment group were not significantly different from that in the comparison group (t=-0.28, p=.781; t=-0.34, p=.741). The level of clients' satisfaction with nursing care in the treatment group was significantly higher than in the comparison group (t=-4.12, p<.001). Conclusion: Use of video-audio information was effective in the increase in satisfaction with care. Therefore, it could be useful in the nursing practice, and be utilized as a way of nursing intervention to improve nursing satisfaction.

• Journal of electromagnetic engineering and science
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• 제10권4호
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• pp.276-281
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• 2010

In this paper, an electromagnetic induction on a telecommunication line by the distribution line of a power provision system or a feeder line of an electrified railway system has been verified through experiments. The basic cause of induction occurrence by these practical power provision systems is the returning current through the earth. This principle has been confirmed by the experiments documented in this paper which implemented these mechanisms to incur an induction. Experimental methods were used to produce the returning current through the earth. The experiment to find a relationship between inducing strength and the distance between the two phase lines in a power provision line has also been included to confirm that, when the distance is enlarged, the induction effect increases as the cross-nullification effect of magnetic fluxes decreases. An experiment for the existence of a shielding effect by another conduction length material has been addedas a protection measure against the induction.

• 융합보안논문지
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• 제5권1호
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• pp.1-9
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• 2005

XML은 웹 응용을 위한 데이터의 처리와 전송을 위해 가장 일반적인 툴이 되고 있다. 모든 온라인 비즈니스 솔루션에서 정책들은 광범위하게 사용되고 있으며, 접근 요청에 대한 'yes/no'와 같은 이분법적인 결정은 충분하지 않다고 인식되고 있다. 이 논문에서는 provision과 obligation을 지닌 로직 형식으로 표현하는 정책규칙을 보안정책 프로그래머들이 융통성있게 명시할 수 있고 구현할 수 있도록 XML로 변환하여 표현하는 기법을 개발하였다. 사용자 정보, 객체 정보, 액션들을 XML로 표현하기 위한 일반적인 형식을 정의하였으며, 이 세 요소를 기본 요소로 하여 정책들을 명시하기 위한 XML DTD를 개발하였다. 향후에는 권한부여 정책에 기반한 접근 제어뿐만 아니라 데이터의 성격에 따라 각 필드에 있는 데이터를 변환하고 부인방지 기법을 도입하는 등 다양한 보안 기능을 지원하기 위해 이들을 XML 정책 규칙으로 명시하는 것에 대해 연구하고자 한다.