• 한국항만학회지
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• 제14권4호
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• pp.451-461
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• 2000

The design and maintenance of navigation channel and water facilities of an harbor which is located at the mouth of river or at the estuary area are difficult due to the complexity of estuarial water and sediment circulation. Effects of deepening navigable waterways, of changing coastline configurations, or of discharging dredged material to the open sea are necessary to be investigated and predicted in terms of water quality and possible physical changes to the coastal environment. A borad analysis of the transport mechanism in the estuary area was made in terms of sediment property, falling velocity, concentration and flow characteristics. In order to simulate the transport processes, a two-dimensional finite element model is developed, which includes erosion, transport and deposition mechanism of suspended sediments. Galerkin’s weighted residual method is used to solve the transient convection-diffusion equation. The fluid domain is subdivided into a series of triangular elements in which a quadratic approximation is made for suspended sediment concentration. Model could deal with a continuous aggregation by stipulating the settling velocity of the flocs in each element. The model provides suspended sediment concentration, bed shear stress, erosion versus deposition rate and bed profile at the given time step.

• 한국멀티미디어학회논문지
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• 제6권2호
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• pp.259-266
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• 2003

본 논문에서는 블록 내의 움직임 정도에 따라 다단계의 블록 레벨을 설정하고, 각 블록 레벨에 따라 각기 다른 움직임 예측을 수행하는 다단계 움직임 예측 알고리즘을 제안한다. 이는 움직임이 없거나 적은 영역에서의 잉여 탐색 과정을 제거하여 계산적 효율성을 증대하고, 움직임 정도가 큰 영역에 대해서는 움직임 예측 과정을 심화시켜 예측의 정확성을 향상시킨다. 실험결과 프레임 당 적은 수의 블록으로 고정된 크기의 블록을 가진 전역 탐색 블록 정합 알고리즘과 Three-Step 탐색 알고리즘보다 MSE를 20% 정도 감소시켰으며 연산량은 전역 탐색 블록 정합 알고리즘과 비교하여 98%, Three-Step 탐색 알고리즘과 비교하여 56% 정도 절감하는 효과를 얼을 수 있었다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.458-464
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• 2008

The objective of this paper is to seek an alternative to figure out appropriate ways since difficulties lie in the introduction of LRT system to be operated by governments and self-governing local governments in the country. This situation can act as a main cause of breakdown in domestic railway industry by deepening of outflow of national wealth and technological dependency. Policy makers are required to get awareness of justification and necessity of Project management such as project strategy, goals, operating budgets, risks, investment revenue prior to preparing the outline of the introduction of LRT system shall consider securing budget in light of performance, reliability, and safety withe the help of system engineering activities during the entire project cycle such as design, construction, quality management, and commissioning before mapping out the basic plans for LRT project. In view of the current domestic conditions, the first time within the country, Seoulmetro is training professional as trust education of specialist training about LRT system, SE and PM education. This study leads to participating in PM/SE business by human power who finished from education of domestic specialist for LRT introduction corporation and businesses, it is published for introduction of specialist education and business revitalization.

• 아태비즈니스연구
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• 제10권1호
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• pp.87-103
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• 2019

In December 2017, the Moon Jae-in administration announced a major policy shift away from nuclear and coal, committing itself to the vision of creating a society where renewable sources account for 20% of its electricity generation by 2030. This energy transition involves not just a technical transition from conventional energy sources to renewable energy but also active participation of multiple stakeholders in the energy governance. While energy policy making has long been dominated by the central government in Korea with the aim of managing the supply for rapid industrialization and economic growth, the Moon administration aims to diffuse the central government's authority across various actors in society. Among those actors, this study focuses on the roles that local governments play in energy transition. Despite deepening local autonomy since 1995, Korean local governments have remained policy targets or recipients in the energy policy domain. This article discusses how such a traditional role has evolved under the new administration's energy transition policy and examines what challenges and limitations local governments face in creating a more decentralized energy governance system.

• 한국기계가공학회지
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• 제17권6호
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• pp.158-163
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• 2018

Major producers have already built compressors since World War I and have been monopolizing all domestic and overseas markets based on the accumulated technology, and the dependency of the manufacturers over the entire industry is deepening. Therefore, it is expected that the technological gap with developed countries will be larger without development of the related technology. Therefore, it is necessary to develop a unique technology for a new type of high efficiency compression system. In this study, we present localization of Hydraulic Compressor which can meet the technical trends such as cost reduction, efficiency improvement, environmental friendliness, wide operating range, low capacity / high capacity compatibility, size reduction, easy operation and easy maintenance.

• 한국환경보건학회지
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• 제45권4호
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• pp.295-309
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• 2019

Eight years have passed since the Korean government's medical agency officially reported that the fatal lung disease found in some hospitals in 2011 was caused by chemical disinfectants used in household humidifiers, marking the introduction of the humidifier disinfectant disaster. Over the past eight years, a medical-scientific approach has been taken by the Korean government in its efforts to solve the problems in terms of relief of and compensation for the potential victims. One of the unintended consequence of this approach has been the fact that the number of "official victims" recognized by the government is quite small compared to the total number of applicants who claim to be suffering from the humidifier disinfectant disaster. This is mainly due to the fact that the medical-scientific approach relies on excessively strict, rigid, and narrow medical-scientific criteria provided by medical experts for judging the degree of applicants' bodily damage from the use of humidifier disinfectants. As a result, this medical-scientific approach is becoming increasingly criticized by patients' organizations mainly composed of rejected applicants. Based on the analysis of the limits of this medical-scientific approach and after clarifying the social implications of the disaster from a sociological perspective, this paper proposes certain social approaches focused on participatory governance as a means of dealing with the current issue. Finally, the paper emphasizes that the act of taking social responses to the humidifier disinfectant disaster should also be considered a process of enlarging and deepening democracy in Korea.

• 문화기술의 융합
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• 제5권2호
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• pp.53-57
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• 2019

오늘날 여군들은 군 특성상 복무기간 중, 훈련, 당직근무, 잦은 야근과 이사 등의 직업적 환경과 가족구성에서 발생하는 자녀 양육문제 등 수많은 고충을 감내하며, 극심한 스트레스를 호소하고 있다. 또한 여군들은 군대의 고유한 임무와 끊임없는 훈련의 반복 및 잦은 야간근무로 인한 고충은 지속 심화되어가고 있는 현상이다. 이러한 이유에서 자녀 보육을 담당해야 할 여군의 막중한 책임과 스트레스는 극에 달하고 있다. 따라서 본 연구는 육아기간 여군의 복무여건을 보장하고, 양육문제를 개선하기 위한 제도적 방안을 연구할 필요성이 있다.

• 한국컴퓨터정보학회논문지
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• 제24권1호
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• pp.257-263
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• 2019

This paper is a study on mathematical aspects that can be basic for understanding and applying the contents of machine learning. If you are familiar with mathematics in the field of computer science, you can create algorithms that can diversify researches and implement them faster, so you can implement many real-life ideas. There is no curriculum standard for mathematics in the field of machine learning, and there are many absolutely lacking mathematical contents that are taught in the curriculum presented at existing universities. Machine learning now includes speech recognition systems, search engines, automatic driving systems, process automation, object recognition, and more. Many applications that you want to implement combine a large amount of data with many variables into the components that the programmer generates. In this course, the mathematical areas required for computer engineer (CS) practitioners and computer engineering educators have become diverse and complex. It is important to analyze the mathematical content required by engineers and educators and the mathematics required in the field. This paper attempts to present an effective range design for the essential processes from the basic education content to the deepening education content for the development of many researches.

• The Journal of Asian Finance, Economics and Business
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• 제8권1호
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• pp.723-732
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• 2021

On September 25, 2015, 193 countries of the United Nations (UN) General Assembly, signed the 2030 Agenda to work towards attaining 17 Sustainable Development Goals (SDGs) and its associated 169 targets and 232 indicators. With one of the largest renewable energy programs, India is well-poised to be a role model for low-carbon transformation to other Asian countries. However, bridging the financing gap is critical to ensure that the country meets its SDG targets. Though the SDGs identified by the UN are broad-based and interdependent, for ease of analysis we have grouped them into five themes - people, planet, prosperity, peace, and partnership - based on existing UN models. This paper investigates the financing gap for 'green' projects linked to planet-related SDG targets in India. It builds an argument for utilizing green bonds as an instrument to bridge the gap. After establishing the potential of green bonds in raising the finance to meet India's planet-related SDG targets, we look at the current policy landscape and suggest recommendations for successful execution. The paper concludes that deepening of the corporate fixed income securities market and firming up guidelines in line with India's climate action plans are inevitable before green bonds can be considered a viable financing option.

• Acta Via Serica
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• 제6권1호
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• pp.55-90
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• 2021

In the last several decades, and especially since the Chinese launching of the Belt and Road (BRI) initiative in 2013, the Chinese presence in Central Asia has intensified. Russia and Chinese leaders deny that there is any conflict of interests between them, while the standard narrative has been that the two states adhere to a functional division of tasks in which China concentrates on economic activity while Russia acts as the security guarantor for the region. This article argues that the professed equanimity between the Russian and Chinese leaderships masks the emergence of widening cracks in their relationship with regard to Central Asia. The convenient narrative of a functional division of tasks between the two states is called into question by China's increasingly active presence in the military and security sector in the region, but China's influence is growing throughout the Central Asian economic, political, and social order. China's movement into Central Asia challenges Russia's claim to act as an equal partner of China, as well as its pretensions to regional hegemony. This development reflects the widening disparity between the two states with respect to their power capabilities but it also exposes the interactions between Russia and China in Central Asia as the most vulnerable aspect of their relationship. In Central Asia, a defensive Russia encounters an ascendant China.