• 한국콘텐츠학회논문지
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• 제22권9호
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• pp.260-270
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• 2022

「국유재산법」 개정으로 국유지 활용여건이 개선되었다. 새정부도 민간투자활성화와 재정투자 여력 확보를 위해 국유지 활용 필요성을 제시하고 있다. 본 연구는 이러한 정책기조 변화에 맞춰 일본의 국유지 활용정책과 유효활용 사례를 살펴보고 국유지 관리와 활용증진 관점에서 정책적 시사점을 찾아 보고자 하였다. 일본의 국유지 활용정책 방향은 효율적인 국유지 관리를 통해 보유 중인 국유지의 최적이용을 유도하며, 국·공유지 연계와 민간참여 등을 통해 적극적인 국유지 활용을 도모함으로써 국유지 가치를 높이고 미이용 국유지를 감소시킴으로써 궁극적으로 저가에 국유지가 매각되는 것을 억제하는 방향으로 정책이 추진되고 있는 것으로 나타났다. 국유지 유효활용 촉진을 위해 먼저 명확한 정책 방향을 정립하는 것이 필요하다. 그리고 투명한 정보공개시스템 구축, 부처간 이해관계 조정이 가능한 강력한 컨트롤타워 구축이 요구된다. 효율적인 국유지 활용을 위한 정책수립의 출발점은 실질적인 국유지 주인은 국민이라는 인식의 전환이다.

• KIEE International Transaction on Systems and Control
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• 제2D권2호
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• pp.92-96
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• 2002

This paper is concerned with properties of a Lyapunov functional of state delay systems. It is shown that if a state delay system has a pure imaginary pole for some state delay, then no Lyapunov functional satisfying a Lyapunov condition exists periodically with respect to change of the state delay. This periodic property is unique in state delay systems and has been well known in the frequency domain stability conditions. However, in the time domain stability conditions using a Lyapunov functional, the periodic property is not known explicitly.

• International Journal of Automotive Technology
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• 제7권1호
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• pp.101-107
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• 2006

The force and moment simulation of a steady-state rolling tire taking the effect of tread pattern into account is described using a steady-state transport method with ABAQUS. Tread meshes can not fully consider a tread pattern because detailed tread meshes are not allowed in the steady-state transport method. Therefore, the tread elements are modeled to have orthotropic property instead of isotropic property. The force and moment simulation has been carried out for the cases of both isotropic and orthotropic properties of tread elements. Both cases of simulation results are then compared with the experimental results. It is verified that the orthotropic case is in a better agreement with the experimental result than the isotropic case. Angle effects of tread pattern have been studied by changing the orientation angle of orthotropic property of tread. It is shown that the groove angle in the tread shoulder region has a more effect on force and moment of a tire than that in the tread center region.

• 대한산업공학회지
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• 제28권3호
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• pp.247-255
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• 2002

The objective of this paper is to clarify the decomposition property for $M^{X}$/G/1 queues with generalized vacations so that the decomposition property is better understood and becomes more applicable. As an example model, we use the $M^{X}$/G/1 queue with setup time. For this queue, we correct Choudhry's (2000) steady-state queue size PGF and derive the steady-state waiting time LST. We also present a meaningful interpretation for the decomposed steady-state waiting time LST.

• International Journal of Computer Science & Network Security
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• 제22권11호
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• pp.284-290
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• 2022

The study considers trends and prospects for developing virtual (augmented) reality and civil transactions in relation to digital property. In jurisprudence, there is a need to determine the legal status of virtual and augmented reality to regulate legal relations in the digital environment. Legal relations using new digital technologies require the creation of new legislative approaches and rules of their legal regulation. The article dwells on the legal status of virtual (augmented) reality and determines the methods of regulating legal relations in the sphere of digital property. The study utilized methods for collecting single and multiple facts in order to identify the main trends in the civil circulation of digital assets, as well as private law methods. The methods of generalization, concreteness, induction and deduction reveal the legal nature and main features of virtual (augmented) reality and digital property. The paper highlights the specifics of virtual reality and civil transactions in relation to digital assets. The research has concluded that the sale, exchange and other actions with digital objects in virtual reality have distinctive features, while digital property has also unique characteristics since it is involved in civil circulation and legal relations.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.2250-2257
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• 2008

This study examined the existing issues and current status of how to best approach the establishment of railroad asset of the corporation in the long run. It also explored some preventative measures for further problems. Based on the law of state property and related railroad statutes, the research referred to basic plans for railroad management of Korea Rail Network Authority, the outcome of file research, handbook of asset management, guidelines and policy of Ministry of Finance and Economy for state property management, recommendations of the Board of Audit and Inspection and fact-finding research of state property (miscellaneous properties). The findings are making a few suggestions on the service of the Korea Rail Network Authority and Korail.

• 정보처리학회논문지D
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• 제11D권1호
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• pp.115-122
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• 2004

소프트웨어 시스템 모델링에서는 정형적 기법으로 소프트웨어를 모델링하고 분석하여 소프트웨어 시스템이 가지는 문제점들을 구현에 앞서 미리 찾아 해결하고자 한다. 페트리 네트는 그래픽 정형 명세 언어로 병행적 시스템, 실시간 시스템, 통신 프로토콜 등의 소프트웨어 시스템 모델링 및 분석에 널리 이용되고 있다. 페트리 네트 분석에서, 교착상태(deadlock), 수행가능성(liveness) 등의 일반적인 시스템 특성 분석은 주로 도달성 분석을 통해 이루어지며 시스템 요구사항에 관한 고유 특성 분석은 모델 검사(model checking) 방법을 통해 이루어진다 하지만 도달성 분석과 모델 검사 방법에서는 기본적으로 시스템의 모든 가능한 상태들을 나열하여 분석하므로 모델의 규모가 커짐에 따라 상태가 기하급수적으로 증가하는 상태 폭발(state explosion) 문제가 발생한다. 이 논문에서는 상태 폭발을 회피하면서 시스템의 요구사항을 체계적으로 분석할 수 있는 새로운 방법을 제안하고자 한다. 먼저 분석하고자 하는 요구사항을 속성 네트로 나타낸 후, 시스템 모델과 속성 네트를 합성하여 분석한다. 이러한 합성 분석에서는 분석 대상 속성과 연관되지 않는 모델의 부분들을 축약 규칙에 따라 축약함으로써 분석 도메인을 점진적으로 줄어 나갈 수 있으며 요구사항 만족 여부를 간단히 검사할 수 있는 장점이 있다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.847-850
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• 2008

Three thermally stable red dyes of azo, quinacridone and perylene derivatives were synthesized and dye-based color filters were manufactured for liquid crystal display. Aggregation behavior of the dyes and their spectral property in film state were investigated by concentration dependent spectroscopy and field emission scanning electron microscopy (FE-SEM). These dyes have remarkable difference on their aggregation behavior in film state. Such difference of aggregation behavior affects the spectral property of the film, and it can cause decreasing the transmittance of dye-based color filters.

• Kyungpook Mathematical Journal
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• 제34권2호
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• pp.259-273
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• 1994

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제53권3호
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• pp.129-134
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• 2004

To analyze the performance of the gas circuit breaker(GCB), the flow field variables such as temperature, pressure and density should be evaluated accurately In the puffer chamber of puffer type GCB, the pressure rise may Exceed 20 bar and in this range of high pressure, $SF_6$ gas deviates the ideal gas property. Therefore, the real gas property of $SF_6$ should be taken into consideration for the accurate analysis of flow field. This paper presents the analysis technique of cold gas flow in GCB employing the real gas state equation of SF6. The FVFLIC method is Employed to solve the axisymmetric Euler equation. To reduce the computational effort of real gas state equation, the relationship between density and pressure is approximated by the polynomial at the temperature of 300K. The proposed method is applied to the test GCB model and simulation results show good agreement with the experimental ones.