• 디지털융복합연구
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• 제13권10호
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• pp.59-68
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• 2015

본 연구는 융복합 N스크린 서비스의 사업자의 비즈니스 모델에 따른 유료이용자와 무료이용자 간의 연계이용(multi-device use)과 이용행태 그리고 삶의 만족도를 비교 분석하였고, 이용자의 개인적, 관계적, 집단적 삶의 만족도에 각각 영향을 미치는 요인이 무엇인지 살펴보았다. 그 결과, N스크린 서비스의 유 무료 이용자 간 방송 콘텐츠를 연계이용을 하는 정도의 차이가 통계적으로 유의미하게 나타났다. 또한, 유료이용자가 무료이용자에 비해 개인적 만족도가 높은 것으로 나타났으며, N스크린 서비스의 유 무료이용에 따라, 삶의 만족도에 영향을 미치는 요인이 달리 나타났다. 무료이용자 집단에서는 학력과 동영상과 방송 콘텐츠 소비금액이 삶의 만족도에 영향을 미쳤으며, 유료이용자 집단에서는 방송 콘텐츠 연계이용이 삶의 만족도에 영향을 미쳤다. 본 연구를 통해 국내 N스크린 서비스 시장 상황에 대한 시사점과 산업적 전략을 제시, 이를 고려한 비즈니스 모델을 모색하는데 도움이 될 것이라 판단된다.

• 대한간호학회지
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• 제36권5호
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• pp.691-700
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• 2006

Purpose: This study was done to analyze variations in unit staffing and recommend policies to improve nursing staffing levels in intensive care units (ICUS). Method: A cross-sectional study design was used, employing survey data from the Health Insurance Review Agency conducted from June-July, 2003. Unitstaffing was measured using two indicators; bed-to-nurse (B/N) ratio (number of beds per nurse), and patient-to-nurse (P/N) ratio (number of average daily patients per nurse). Staffing levels were compared according to hospital and ICU characteristics. Result: A total of 414 institutions were operating 569 adult and 86 neonatal ICUs. Tertiary hospitals (n=42) had the lowest mean B/N (0.82) and P/N (0.76) ratios in adult ICUs, followed by general hospitals (B/N: 1.34, P/N: 0.97). Those ratios indicated that a nurse took care of 3 to 5 patients per shift. Neonatal ICUs had worse staffing and had greater variations in stafnng ratios than adult ICUs. About 17% of adult and 26% of neonatal ICUs were staffed only by adjunct nurses who had responsibility for a general ward as well as the ICU Conclusion: Stratification of nurse staffing levels and differentiation of ICU utilization fees based on staffing grades are recommended as a policy tool to improve nurse staffing in ICUs.

• 한국컴퓨터정보학회논문지
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• 제6권2호
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• pp.97-100
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• 2001

최근 인터넷 정보가전산업은 다양한 통신 기기와 통신이 가능하게 되었지만 각 가전기기들과의 통신이 많아지고 복잡해지고 있다 이런 기기들을 효과적으로 관리하고 기기 전체를 통합할 수 있는 홈네트워크 형태의 기술개발은 아직 진행 중에 있으며, 사용자에게 효과적인 QoS를 지원하기 위한 방법론의 고려가 부족한 실정이다. 그러므로 본 논문에서는QoS지원을 위해서 홈네트워크와 인터넷 기반의 policy-based network기술을 통합할 수 있는 미들웨어 서비스에 관하여 언급하였다.

• 한국경영과학회지
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• 제16권2호
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• pp.61-61
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• 1991

We propose a strategic R&D resource allocation and project selection model based on national R&D policy and objectives. First, contributions to R&D policy and objectives for each R&D area are evaluated by using analytical hierarchy process (AHP). Second, fuzzy Delphi are proposed to estimate R&D budget for each R&D area. Then, a project selection grid is also introduced to implement two-phased evaluation for R&D project selection. We also discuss how to improve the consistency in AHP and how to reduce the pairwise comparison in AHP. The proposed model enables the decision makers to allocate R&D budget, and to evaluate and select the R&D proposals based on both the contribution to national R&D policy and objectives, and the size of each R&D area concurrently

• 한국시스템다이내믹스연구
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• 제1권2호
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• pp.61-89
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• 2000

The purpose of this study is first, to find out what factors affect the cooperation and trust within the functions in the policy implementation network and in what mechanism these factors interact, second to investigate the whys to manage trust and cooperation successfully in the dynamic situation such as the network setting. For these purpose, this study reviews the concept and characteristics of policy implementation organizations, second, extracts the various factors affecting trust and cooperation in the network situation, third applies and analyzes the relationship among factors to system dynamics model based on the game theory. The results of this study could be summarized as follows: It was found that the utility change within the participants by persuasion ＆ mutual understanding and change of rule would be leading to success in policy implementation network. Also bureaucratic management such as power enforcement does not have any good impact in the managing network. In this study, system simulation method tried to analyze the hypothesis. Quantitative and case analyses were not accompanied and analysis was limited to two-person game theory. So there is some doubt this results could be generalized to actual situation which is N-person game.

• 산업경영시스템학회지
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• 제34권4호
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• pp.162-168
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• 2011

The most generalized form of the triadic operating policy for a controllable M/G/I queueing model is analyzed to obtain fundamental relations among the other forms of operating policies based on its corresponding expected busy period. Since it consists of three decision variables N, T and D, it could be possible to decompose into the simple, the dyadic and other forms of the triadic operating policies. The procedures to decompose the most generalized triadic policy into other forms of operating policies could provide a general methodology to identify each element associated with it.

• 산업경영시스템학회지
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• 제32권4호
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• pp.161-168
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• 2009

The most generalized form of the triadic operating policy for an M/G/1 queueing model is developed. It consists of three simple N, T and D operating policies and has a peculiar structure possessing concepts of dyadic policies. Using the concept of the pseudo probability density function of the busy period, its expected busy period for the controllable M/G/1 queueing model is derived. Since the obtained result is the most generalized form the triadic polity, the expected busy periods for all known dyadic policies are recovered as special cases from it.

• 대한가정학회지
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• 제40권2호
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• pp.143-159
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• 2002

Consumer Education Policy for -Focusing on developing Social support System- The purpose of this research is to understand the change of future consuming environment and the characteristics of future potential consumer: the net generations. With those research results, we deduced our goal, content and method of consumer education for these net generations. Finally, I suggested a scheme of the social construction by demand of our future society. Literature review and depth interview are used for this research. The main factors of the change of our future consuming environment are Digitalization, globalization, improvement of consumer sovereignty, Sustainable consumption culture, the increasing pursuit of safe life. It is necessary to educate our future consumer, net generations, the information searching skills in order to be able to obtain right information. We also need to educate them how to practice the safe life and Sustainable consumption and how to get consumers sovereignty. The method of the education requires interchangeable communication. We need social networking system for the support of consumer education, in order to build this social system. We need an administrative support from the government and financial support from corporations. We have suggested that it is very desirable to share all the information developed among Academic field, Consumer related organizations and schools by this network be build.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2013년도 하계학술대회
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• pp.394-397
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• 2013

본 연구는 N스크린 서비스의 이용행태(교차이용, 개인별 단말기 보유량, N스크린 이용을 위한 지불금액, N스크린 이용시간), 콘텐츠 특성(채널의 다양성, VOD의 다양성), 기능적 요인(시스템품질, 인터페이스, 결제시스템), 비용에 대한 이용자의 인식이 이용만족도와 지속이용의사에 미치는 영향을 살펴보았다. N스크린 유료 경험이 있는 이용자를 대상으로 (N=498), 웹을 통한 설문조사를 한 결과, 이용만족도에 가장 큰 영향을 미치는 요인은 기능적 요인 중 인터페이스로 나타났으며, 결제시스템, VOD의 다양성, 채널의 다양성, 비용 순으로 유의하게 나타났다. 본 연구는 이용자 차원에서 서비스 만족에 영향을 주는 요인들을 밝혀냄으로써, N스크린과 스마트TV의 활성화를 위한 기초 자료를 제공하는 데 의의가 있다.

• Journal of applied mathematics & informatics
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• 제23권1_2호
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• pp.505-516
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• 2007

In this paper, we provide some fundamental properties and basic theoretical results of K-class-based dedicated storage policy in a unit load system assuming the constant-space assumption that the number of storage locations for a class is not the maximum aggregate inventory position for a class but the sum of space requirement for products assigned to the class. The main theorem is that there exists a (K+1) -class-based storage layout whose expexted single command (SC) travel time is not greater than that of a K-class-based storage layout, i.e, $E(SC^*_{K+1}){\leq}E(SC^*_K)\;for\;K=1,{\cdots}$, (n-1).