• 한국정보과학회논문지:소프트웨어및응용
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• 제37권5호
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• pp.363-369
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• 2010

데모-기반 학습은 사용자가 직접 작업을 시연함으로써 로봇에게 쉽게 새로운 작업지식을 가르칠 수 있다는 장점이 있다. 하지만 기존의 많은 데모-기반 학습법들은 상태공간과 정책들을 표현하기 위해 속성-값 벡터 모델을 이용하였다. 속성-값 벡터 모델의 제한성으로 인해, 이들은 학습과정의 효율성도 낮고 학습된 정책의 재사용성도 낮았다. 본 논문에서는 기존의 속성-값 모델 대신 관계적 모델을 이용하는 새로운 데모-기반 작업 학습법을 제안한다. 이 방법에서는 사용자 데모 기록에서 추출한 훈련 예들에 관계적 개체-기반 학습법을 적용함으로써, 동일 작업영역내의 다른 유사한 작업들에도 활용하기 용이한 관계적 개체-기반 정책을 유도한다. 이 관계적 정책은 (상태, 목표) 쌍으로 표현되는 임의의 한 상황에 대해 이것에 대응하는 하나의 실행동작을 결정해주는 역할을 한다. 본 논문에서는 데모-기반 관계적 정책 학습법에 대해 자세히 소개한 후, 로봇 시뮬레이터를 이용한 실험을 통해 이 학습법의 효과를 분석해본다.

• 한국시스템다이내믹스연구
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• 제8권2호
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• pp.275-294
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• 2007

The Roh administration, participatory government, has pursued deconcentration policies for promoting the balanced national development since 2002. The main policy instrument of the deconcentration policy is that the transferring of public institutions from capital region to local areas. However, it has been argued that these policies have resulted in another problems of policy side-effects, for instance, decreasing the national competitiveness. This paper aims to explore the problems of side-effects of deconcentration policies based on the Systems Thinking approach. On the Systems Thinking approach basis, this paper analysed the policy side-effects placed the focus on intended feedback loops and unintended feedback loops of the deconcentration policies.

• KDI Journal of Economic Policy
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• 제44권4호
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• pp.1-24
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• 2022

We investigate how reforestation contributed to stabilization of riverine water levels in South Korea. For the purpose, we estimate an equation capturing dynamic relationships among rainfall, upstream-area tree stock, and downstream water levels in three river systems of Hongcheon, Mangyeong, and Hyeongsan, using daily observations of precipitation and water levels for the period from 1985 to 2005. Simulation based on estimation results shows that increase in the tree stock in a river basin leads to a significantly suppressed peaking in riverine water levels in response to an abrupt and concentrated rain in the upstream area. For instance, an hour-long concentration of 100mm rain results in 0.7m rise in water level if the volume of growing stock is 1 million m³, whereas the rise in water level stays below 0.27m with 5 million m³ in the growing-stock volume.

• 정보보호학회논문지
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• 제18권5호
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• pp.149-160
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• 2008

개인 사용자들은 정보통신 서비스 이용을 위해 필요 이상의 개인정보를 공개하므로 프라이버시를 심각하게 침해당한다. 이러한 불완전한 개인정보관리 인프라를 보완하기 위해 P3P나 EPAL, XACML 같은 개인정보보호 플랫폼 기술이 개발되고 있지만, 이들은 개별주체들을 대상으로 보호자원에 대한 접근통제정책을 적용하므로 역할기반 접근통제를 원하는 기업이나 기관에는 적합하지 않다. 본 논문에서는 프라이버시를 강화한 역할기반 접근통제 정책을 표현하는 언어를 제안한다. 제안된 프라이버시 강화형 역할기반 접근통제 정책은 XACML을 변형한 것으로, XACML의 장점인 매칭과 조건 표현을 사용하며 프라이버시를 강화하기 위해 목적, 의무사항을 별도의 엘리먼트로 표현한다. 본 논문에서는 퍼미션 배정 정책에 관한 정책언어 모델을 제안하고, 개인정보보호 법률에 기초한 정책 시나리오와 도큐먼트 인스턴스를 제공한다. 또한 사용자의 요청컨텍스트와 그에 대한 응답컨텍스트도 제공한다.

• Clinical and Experimental Vaccine Research
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• 제12권1호
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• pp.1-12
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• 2023

Widespread public vaccination is one of the effective mechanisms to ensure the health and prevent deaths in societies. The coronavirus disease 2019 (COVID-19) vaccine is a stark instance in this regard. Vaccine development is a complex process requiring firm-level capabilities, various infrastructures, long-term planning, and stable and efficient policies. Due to the global demand for vaccines during the pandemic, the national capability to produce vaccines is critical. To this end, the current paper investigates influential factors, at the firm- and policylevel, in the COVID-19 vaccine development process in Iran. By adopting a qualitative research method and conducting 17 semi-structured interviews and analyzing policy documents, news, and reports, we extracted internal and external factors affecting the success and failure of a vaccine development project. We also discuss the characteristics of the vaccine ecosystem and the gradual maturity of policies. This paper draws lessons for vaccine development in developing countries at both firm and policy levels.

• 가정∙방문간호학회지
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• 제7권1호
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• pp.15-25
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• 2000

This article was trying to suggest an agenda and alternatives of home health care policy for the future home care growth and development and examine the significance of new health care law and regulations. In addition. It was to analyze and drive the home care system problems. of which was made an announcement on the 11th of April. that home health care project must be centered from the nationwide general hospital. As we have learned from the developed countries, the home health care have been closely related health care policy among the field of nursing area. Therefore. we need to understand our national health care policy and need to predict the future direction and goal of our home health care policy in order to enhance the growth and activation of health care system. Additionally. we also need to have a vision and ability to develop under our own health care policy with systematic and rational home care business escaping from past perspective and standpoint. We must create a master plan of home care system to fulfill one part of system of the function and an important role in order to pursue an advanced health care plan under our system. For instance. in the 21th century as we establish a master plan for the growth of our country home care plan with improving plan systematically and also we need to produce many highly qualified researching and good personal who can develop and maintain the system efficiently. Specially. based on the unique characteristics of our health care system and the direction of development of plan, we need to find and correct the problems which we have faced the present time, so that we can provide and reach the goal of advanced health care system which our government want to pursue. Finally. we have to strive our best effort to make our home health care system can be positioned and stand the right direction to have the benefit for every individual citizen in our country.

• 한국시뮬레이션학회논문지
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• 제1권1호
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• pp.55-63
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• 1992

This paper presents a simulation based analysis of a service robot operating in a robot-centered FMC, in which the robot is located at the approximate center of the cell and the machines are arranged in a partial circle around it. The robot's function is to locate and service the parts which require a series of unloading, moving, and loading operations. The main purpose of the analysis is to determine the best movement decision for the robot's arm in each instance. The results from the study, based on both statistical and nonstatistical analysis suggest the best policy for the robot's arm's movement that holds promise for application to the robot-centeredFMC.

• STI Policy Review
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• 제6권2호
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• pp.54-86
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• 2015

The study examines the U.S. Small Business Innovation Research (SBIR) program, with a focus on the recent Reauthorization, and compares, in the political context, the U.S. and East Asian countries-Japan, Korea and Taiwan-that adopted the U.S. SBIR program. For the systematic analysis and cross-country comparison, the study employs Kingdon (2003)'s framework-his political theory and Garbage Can Model-to identify political participants and processes underlying the SBIR Reauthorization and to analyze the differences in problem, policy, and politics streams between the U.S. and East Asian countries. For the cross-country comparison, specifically, the study uses various data sources such as OECD, Global Entrepreneurship Monitor, Hofstede's Cultural Dimensions, and World Value Survey. Based on the analysis outcomes, implications of U.S. practices on East Asian countries are extracted as follows. East Asian countries tend to: Have higher entrepreneurial aspiration while lower entrepreneurial activity and attitude than the U.S.; bear higher long term orientation and uncertainty avoidance while lower individualism than the U.S.; and have greater expectations of technology development and higher confidence in political parties while participating less in political action than the U.S. Drawing on the differences, the following policy recommendations are suggested. East Asian countries should: Improve entrepreneurs' access to resources (in particular, financial resource) in order to link their high entrepreneurial aspiration to actual entrepreneurial activities; cultivate failure-tolerating culture and risk-taking entrepreneurs, for instance, by providing a second chance to SBIR-participating businesses that failed to materialize their innovative ideas; and leverage their high expectations of new technology in order to take bold actions regarding their SBIR programs, and update the programs by drawing out constructive dialogues between SBIR stakeholders.

• 한국정보통신학회논문지
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• 제11권7호
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• pp.1235-1241
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• 2007

컨버전스는 디지털 기술 기반의 제품과 서비스가 융합되고, 새로운 형태의 제품과 서비스를 창출하는 것으로부터 시작하여, 소비자 요구의 다양화, 사회 트랜드에도 반영되어, 다양하고 빠르게 진행되고 있다. 따라서 본 논문에서 u-Gov가 추구하는 행정의 이념을 달성하기 위하여 컨버전스 진화에 의한 u-Gov의 역할로써 국내의 전자정부 컨버전스 시도로 올 수 있는 영향과 정책 마련의 필요성을 가지고, 컨버전스 사회변화에 따른 활용사례를 제시하고, 여기에서 나타날 수 있는 이점을 고찰하였다. 그리고 컨버전스 이슈의 분석을 통해 향후 컨버전스 정책추진 방향을 제시하였다.

• International Journal of Contents
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• 제16권2호
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• pp.30-40
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• 2020

This study performed GIS and statistical analyses on the location and spatial characteristics of the slum in Daejeon. Spatial data of 648 slum residents in Daejeon were collected and 131 residents among them were surveyed. The results showed the trends of higher rent, lower social exclusion and closer neighboring relations in slum center than the surrounding areas, which could be interpreted as the interrelated multilateral effects of the micro- (housing), meso- (relations), exo- (community) and macro- (government policy) systems. The strong bonds among neighbors and various supports from social service facilities elevated the slum area's rent and diminished residents' social exclusion more than housing conditions (for instance, poor hygiene and low safety). Slum tenants willingly paid a premium for their substandard housings and refused moving to governmentally provided modern housing units. In urban development, administrative authorities need to be cautious about slum uprooting. Much rather an alternative renewal approach is needed which protects the slum's intimate relations while improving its overall living standards.