• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권8호
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• pp.2875-2893
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• 2015

Existing coding aware routing algorithms focused on novel routing metric design that captures the characteristics of network coding. However, in packet coding algorithm, they use opportunistic coding scheme which didn't consider the queue state of the coding node and are equivalent to the conventional store-and-forward method in light traffic load condition because they never delay packets and there are no packets in the output queue of coding node, which results in no coding opportunity. In addition, most of the existing algorithms assume that all flows participating in the network have equal rate. This is unrealistic since multi-rate environments are often appeared. To overcome above problem and expand network coding to light traffic load scenarios, we present an enhanced coding-aware routing algorithm based on queue state and local topology (OQMCAR), which consider the queue state of coding node in packet coding algorithm where the control policy is of threshold-type. OQMCAR is a unified framework to merge single rate case and multiple rate case, including the light traffic load scenarios. Simulations results show that our scheme can achieve higher throughput and lower end-to-end delay than the current mechanisms using COPE-type opportunistic coding policy in different cases.

• 기술혁신연구
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• 제5권1호
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• pp.113-149
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• 1997

This paper, searching for the origin of the science and technology policy, is one of the research series on the original form of current S&T policy such as origin, evolution and changing patterns. Without understanding the origin, it is very difficult to understand the evolution and the current change of the policy. To answer this question, 2 kinds of conditions are set: 4 concepts for the origin of a policy and also 4 conditions for the S&T policy itself. As the origin of a policy, 4 concepts are set such as independence, continuance, diffusion and modern state as a policy body. Also as conditions for S&T policy, there may be 4 conditions such as policy targets, policy functions, administration body and the usage of the name of the policy. S&T can be distinguished as science, technology and S&T along it's development path. There, hence, are 2 origins of science and technology policy. French policy for modern science at the late 18th century and the establishment of the Agency of Science and Technology Policy of Japan in 1956 can be pointed out as the origin of the policy. The former can be called as the origin for natural science, and the latter as the origin for S&T. This study implies that new paradigm of S&T policy is a reflection for both the needs of new S&T and social needs. When there were big problems in a society and when there appeared new S&T, they exploited new S&T vigorously. This has been remained as a rememberable monuments in the history of the S&T policy.

• 사회복지연구
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• 제37호
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• pp.117-144
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• 2008

본 연구의 목적은 한국 복지국가의 지출변화를 추동하는 요인에 대한 이론적 가설들을 실증적으로 분석하는 것이 목적이다. 한국복지국가 지출결정요인을 분석하는 기존연구들은 종속변수로 사용되는 사회복지지출 자료의 신뢰성, 분석방법의 타당성을 충분히 확보하고 있지 못했다는 한계를 가지고 있다. 또한 분석시기가 1990년대 말까지만을 포괄하고 있어서, 최근의 한국복지국가 변화를 충분히 반영하지 못하고 있다. 본 연구는 1960년 이후부터 2003년까지를 분석에 포함하며, 일관된 기준을 가지고 구축된 '비교 사회정책 데이터(Comparative Social Policy Data set)'를 활용하고, 분석방법으로서 일반화최소제곱(GLS) 방식의 시계열 회귀분석을 사용함으로써 기존 연구의 한계를 극복하고자 하였다. 본 연구의 분석 결과는 첫째, 구조기능주의, 특히 산업화와 관련된 변수들이 가장 안정적이고 통계적으로 유의미하였다. 둘째, 실업률 변수의 영향은 독점자본주의의 심화를 반영한 결과라기보다는 경제위기 이후 실업의 증가에 대한 정부의 단기적 대응 결과로 해석하는 것이 타당하다. 셋째, 권력자원론 변수인 좌파정치의 한국적 적용은 매우 제한적으로만 타당한 것으로 분석된다. 결론적으로 한국복지국가의 발전에서 진보정치 영향력의 일면이 발견되긴했지만, 보다 정확한 결론을 위해서는 조금 더 관찰이 필요하며, 한국의 복지국가는 산업화론이 적용되는 초보적이고 자동적인 성장으로 특징 지워진다고 할 수 있다.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.17-22
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• 2022

This article defines the process of formation of anti-corruption consciousness as one of the areas of interaction between public authorities and civil society institutions. It is concluded that the implementation of the state anti-corruption policy in Ukraine may be more promising if the institutions of civil society are actively involved. The degree of citizen engagement can be increased by increasing social trust, as well as by increasing the level of political and legal education and culture. Particular attention should be paid to the organization of public control and monitoring of the activities of public authorities, impartial coverage of information on the fight against corruption in the media, as well as the joint conduct of an information and educational campaign and the promotion of the formation of anti-corruption consciousness among a large number of citizens.

• 대한산업공학회지
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• 제26권2호
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• pp.81-87
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• 2000

As for M/G/1 queueing system, we use various control policies, with which we can optimize the system. Up to now the most widely adopted policies are N-Policy, T-Policy, D-Policy, and so on. The existing researches are largely concerned to find an optimal operation condition or to optimize the system under single policy in M/G/1 system. There are, however, few literatures dealing with multiple control policies at once to enhance the flexibility of the model. In this study, we consider M/G/1 system adopting N-Policy and T-Policy simultaneously. If one of two conditions is satisfied, then, the server starts the service. We call this Min(N,T)-Policy. We find the probability distribution of the number of customers and mean waiting time in steady state and derive a cost function. Next, we seek the $N^*$, optimal threshold under various N values. Finally, we reveal the characteristics of cost function.

• 항공우주정책ㆍ법학회지
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• 제8권
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• pp.297-332
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• 1996

It is well observed in the satellite telecommunication policy of several States that legal constraints imposed upon the service coverage of satellite telecommunication as well as broadcasting are to be relaxed in a progressive way. Major aspects of such policy change lie in the adoption of policy refusing traditional concept of national frontier. In the case of direct broadcasting satellite service, while a debate upon the legal issues regarding the spill-over effect of that service is no more major concern of the States, many multinational enterprises are looking for strategic alliance for regional or global DBS project. On the other hand, an implementation plan for connecting the world through global mobile personal communication satellite system is being pursued by several joint effort of multinational firms. Legal issues arise regarding the regulatory competence of each State, Especially, a controversial issue is concerning the sovereign right well recognized upon the regulation of telecommunication. This study is focusing upon the evolution of such policy change for the purpose of allowing us to expect future develpment of worldwide satellite telecommunication policy environment.

• The Journal of Asian Finance, Economics and Business
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• 제9권1호
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• pp.153-166
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• 2022

The study estimates the Structured VAR and the Dynamic Stochastic General Equilibrium Model for the Vietnamese economy based on the new Keynesian model for small and open economies, with the output gap, inflation, policy interest rate, the Vietnamese exchange rate, and the inflation and interest rate in the United States. The paper aims to clarify the impulse response of the macro variables through their shocks. It offers to model the SVAR and DSGE processes, as well as describe why and how interest rate policy is important in the impulse response of macro variables like the output gap and inflation process. The study supports the central role of monetary policy by giving empirical evidence for the new Keynesian theory, according to which an interest rate shock causes the output gap to widen and inflation to decrease. Finally, the application of the DSGE model is becoming more and more popular in the State Bank of Viet Nam to improve its policy planning, analyzing, and forecasting policy towards sustainable and stable growth.

• 사회복지연구
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• 제42권1호
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• pp.31-54
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• 2011

본 논문은 건강보험정책결정과정에서의 참여민주주의를 중심으로 김대중·노무현 정부 복지국가 성격을 연구하였다. 참여민주주의는 한국 민주주의의 질적 발전 보다는 외환위기 이후 자본주의 구조조정을 위한 정치적 정당성 확보 전략에 의해 도입되었다. 따라서 참여민주주의가 복지국가 발전의 한 지표인 보장성강화를 획득해내는데 긍정적인 역할을 하였음에도 불구하고 신자유주의적 이념 추구, 국가재정책임성 미약, 정책결정과정에 가입자의 실질적인 참여 배제로 2007년 보장성강화정책은 결국 실패로 돌아가게 되었다. 과거 복지제도와 마찬가지로 김대중·노무현 정부 참여민주주의제도도 정치적 정당성 확보를 위해 도입되었으나 경제성장우선이데올로기의 제약하에서 운영되었다고 볼 수 있다. 그러나 참여민주주의제도는 '서비스'가 아닌 '권력'형태의 제도라는 점, 참여민주주의제도로 인한 권력의 부여가 보장성 강화요구를 통해 복지국가 발전에 긍정적인 역할을 하였다는 사실로 미루어 볼 때 김대중·노무현 정부가 과거 복지국가와는 차별적이다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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• pp.884-888
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• 2009

Vehicular Adhoc Networks(VANET)은 차량과 노변장치 또는 차량간 통신 기술로 MANET의 보다 구체적인 활용 분야이면서 MANET의 Quality of Service(QoS) 기술이 Video on Demand(VoD), Video streaming, Voice over IP(VoIP) 등 멀티미디어 데이터의 품질을 위하여 연구되고 있다면, VANET에서는 사고나 기타 예상될 수 있는 응급한 상황에 대하여, 즉시 주변 차량에 전달하여 사고를 미연에 방지하는 등의 부분에 초점이 맞추어져있다. 본 논문에서는 Link State Routing(LSR)을 이용하여 실제 네트워크를 구성하고, Common Open Policy Service(COPS)를 이용한 QoS Provisioning 모델을 구현하였다. 그리고 VANET의 특성에 맞는 보다 효율적인 k-hop Cluster, inter-domain policy negotiation에 대하여 제안한다.

• Journal of Electrical Engineering and Technology
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• 제13권5호
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• pp.2074-2079
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• 2018

Global state space's optimal policy is used for offline controller in the form of table by using Dynamic Programming. If an optimal policy table has a large amount of control data, it is difficult to use the system in a low capacity system. To resolve these problem, controller using the compressed optimal policy table is proposed in this paper. A DCT is used for compression method and the cosine function is used as a basis. The size of cosine function decreased as the frequency increased. In other words, an essential information which is used for restoration is concentrated in the low frequency band and a value of small size that belong to a high frequency band could be discarded by quantization because high frequency's information doesn't have a big effect on restoration. Therefore, memory could be largely reduced by removing the information. The compressed output is stored in memory of embedded system in offline and optimal control input which correspond to state of plant is computed by interpolation with Inverse DCT in online. To verify the performance of the proposed controller, computer simulation was accomplished with a one link inverted pendulum.