• Journal of Electrical Engineering and Technology
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• v.13 no.2
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• pp.998-1007
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• 2018

The advent of Wireless Sensor Networks (WSN) has led to their use in numerous applications. Sensors are autonomous in nature and are constrained by limited resources. Designing an autonomous topology with criteria for economic and energy conservation is considered a major goal in WSN. The proposed honey-hive clustering consumes minimum energy and resources with minimal transmission delay compared to the existing approaches. The honey-hive approach consists of two phases. The first phase is an Intra-Cluster Min-Max Discrepancy (ICMMD) analysis, which is based on the local honey-hive data gathering technique and the second phase is Inter-Cluster Frequency Matching (ICFM), which is based on the global optimal data aggregation. The proposed data aggregation mechanism increases the optimal connectivity range of the sensor node to a considerable degree for inter-cluster and intra-cluster coverage with an improved optimal energy conservation.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.05a
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• pp.181-184
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• 2004

This study was conducted to investigate the adequate irradiation dose to eliminate harmful fungi inoculated if beef jerky with a 10% higher moisture content and improved textural property. Aspergillus flavus (approximately $10^6\;CFU/cm^2$) was tested in broth, spore suspension, and inoculated jerky. $D_{10}$ values of A. flavus were 0.36 kGy in the broth and suspension, and 0.47 kGy in the jerky. The results indicate that gamma irradiation can be effectively used to control the fungus growth in beef jerky with an improved quality and higher moisture content.

• Proceedings of the Membrane Society of Korea Conference
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• 1999.07a
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• pp.3-7
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• 1999

Government efforts on membrane technology started in early 1980 with Membrane Development Program supported by the Ministry of Science and Technology. Several independent research projects on liquid separation, gas separation, hollow fiber producing program etc. were carried out during the 1980s. The RaCER was commissioned by MOCI for the general management of the project which had its aims in establishing the base for developing membranes, modules and systems for liquid separation in August 1993. More recently, in June 1995, a program for developing membranes for oxygen separation, nitrogen separation and hydrogen separation was initiated. This paper outlines the brief history of membrane technology development in Korea from the introduction of membrane filtration technology during the late 1960s to present.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.375-379
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• 2016

Recently derived energy dissipation equation by Chamani(2008) and the profile function of the free overfall by Marchi(1993) were verified with present experiment data. The experiment was conducted in hydraulic laboratory, Hanyang University where the flume is 7m long and 0.44m wide, and the height of the drop structure is 0.205m. Water depth and free overfall profile data were collected using an ultra sonic distance sensor and photographic images. The time-averaged water depth data and the free overfall profile were analyzed to examine the energy dissipation pattern over the drop structure

• Transactions of the Korean hydrogen and new energy society
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• v.34 no.6
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• pp.562-574
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• 2023

Carbon neutrality has been suggested to overcome the global climate crisis caused by global climate change. Hydrogen energy is a major way to achieve carbon neutrality, and the developments and policies of hydrogen technology have been proposed to achieve this goal. To commercialize hydrogen energy resources, it is necessary to understand the overall value chain composed of hydrogen production, storage, and utilization and to present the direction of technological developments. In this paper the hydrogen strategies of major countries, including Europe, the United States, Japan, China, and South Korea will be analyzed, and hydrogen technologies by value chain will also be explain. This paper will contribute to understanding the overall hydrogen policy and technology, as both policy and technology are summarized.

• New & Renewable Energy
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• v.20 no.1
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• pp.26-37
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• 2024

Renewable energy sources play a key role in achieving carbon neutrality and zero net emissions in the power generation sector. Various efforts have been made to support the deployment of renewable energy, particularly solar photovoltaic and wind power, including policies to internalize the external cost of carbon emissions. In this study, we conducted a financial analysis of a 800 MW floating photovoltaic system and compared it with ground solar power generation. Additionally, we conducted a cost-benefit analysis that included the social cost of carbon. The findings showed that the floating photovoltaic project can meet the profitability target through an appropriately designed internalization of the social cost of carbon.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.09a
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• pp.731-732
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• 2005

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1366-1367
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• 2011

저탄소 녹생성장의 국가정책에 부응하고 친환경 하수처리장 운영관리 및 에너지 자립률 향상을 위해 신재생에너지 설비 사용과 고효율 전기설비를 적용하여 안정적 하수처리장 운영을 하고자 함.

• 한국지구물리탐사학회:학술대회논문집
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• 2010.10a
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• pp.59-62
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• 2010

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.782-783
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• 2007

Exhaustion of fossil fuel resources and high oil price, and furthermore environmental crisis due to emission of carbon dioxide from fossil fuel are serious problems in these days. In order to overcome these problems it is necessary to find and utilize the every energy saving measures and to make maximum utilization of renewable energy resources. The objective of this paper is to develop an instrument to verify the feasibility of Co-Generation System application in an Apartment Complex.