• Proceedings of the KIEE Conference
• /
• 2001.05a
• /
• pp.248-250
• /
• 2001

In this paper, marginal loss factors are calculated for 12 load cases that represent the impact of marginal network tosses on nodal prices at the transmission network connection points at which generators are located. Based on comparison analysis of marginal loss factors on generation energy resources, we can find the characteristics of each plants according to its energy resources in KOREA.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2000.11a
• /
• pp.205-208
• /
• 2000

In this paper, a plate type ozonizer has been designed and manufactured to minimize the size of ozonizer. This ozonizer have following benefits: convenience of shift and installation maximize space utility. Therefore, ozone generation characteristics have been investigated by varying flow rate, supplied power and gap spacing of plate electrodes.

• Journal of information and communication convergence engineering
• /
• v.8 no.4
• /
• pp.457-460
• /
• 2010

we have analyzed tens of Giga pulse signal generation using sideband injection locking scheme. The numerical model for semiconductor lasers under the strong optical injection is based on the Lang's equation and has been extended in order to take into account the simultaneous injection of the multiple sidebands of the current-modulated laser. The numerical simulation results show that the unselected sidebands will affect the optical and RF-spectral characteristics even though the semiconductor laser is locked to the target sidebands.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.58 no.10
• /
• pp.1855-1860
• /
• 2009

This paper caused a distribution utility to generation of analysis fault several cases on the ground of substation in a energy meter three phase current, voltage data measurement to fault type and characteristics. Mother wavelet transformation of suitable to method algorithm from the distribution utility to generation of fault in image impedance etc several parameter for utility characteristics effective to probatory fault point extraction.

• Journal of the Korean Solar Energy Society
• /
• v.26 no.4
• /
• pp.47-54
• /
• 2006

The current power generation is very suitable renewable energy for the application to Korean western and south coastal regions where characterized as having high current speed. Being different from tidal power generation that needs tremendous dam structure to preserve water, the current power generation utilizes the ocean current flow without damaging to estuary area and its environment. There are still many areas to understand the characteristics of current power generation for the actual field installation. As designing muti module with several rotors, the interaction between rotors will occur that would affect the efficiency and RPM of each rotor. In this study, the interactions caused by gaps between rotors in multi module are studied.

• Journal of Industrial Technology
• /
• v.17
• /
• pp.169-174
• /
• 1997

This investigation was carried out to study on the generation property, management and seperate collection rate of solid waste in the Gu-Gok Falls. Generation rate of solid waste was 80.785kg/day and unit waste generation rates was $65.55g/day{\cdot}tourist$ one person. Physical component of solid waste were garbage 46%, papers 20%, empty bottles 10%, respectively. A plan is required to decrease generation rate of garbage waste. As result to investigate separated garbage can, papers and can were separated more than 60%. But empty bottles and scrap iron were separated less than 50%. P.E.T, steel can, aluminum can and empty bottles were 20% of total generation rate, and profit of reuse is \700,800/year.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.31 no.5
• /
• pp.283-289
• /
• 2018

In our study, we collected data from a 100 kW floating photovoltaic (PV) system installed in Gyeongnam Hapcheon Dam and observed correlations between the power generation of the floating PV system and the irradiance, water temperature, humidity, ambient temperature, wind speed, and module temperature. Firstly, there was little correlation between the water temperature and power generation. Secondly, the ambient temperature, wind speed, and humidity all showed greater correlations with power generation. Finally, the power generation was very highly correlated with the irradiance and module temperature. In conclusion, the power generation of the floating PV system is related individually to environmental factors.

• Journal of Communications and Networks
• /
• v.14 no.4
• /
• pp.385-395
• /
• 2012

This paper tackles the problem of generating shared secret keys based on the physical characteristics of the wireless channel. We propose intelligent quantization mechanisms for key generation, achieving high secret bits generation rate. Moreover, some practical issues affecting the performance of the key generation mechanism are deeply investigated. Mainly, we investigate the effects of delay and mobility on the performance and we enhance the key generation mechanism accordingly. As a result, this paper presents a framework towards robust key generation from multipath wireless channels.

• Journal of the Korean Society of Costume
• /
• v.56 no.6 s.105
• /
• pp.132-144
• /
• 2006

21C, the age of culture, has the effects on the whole aspects in society with its cultural features, and the social changes become the foundation to create the new culture. The W generation, which accounts for Woman, World, Well-being, and Web, etc, leads the trend as 'a new group of powerful consumers' of establishing a new pattern. The W generation prefers psychidelic make-up using pearl through the cyber space, a space for communication like the N generation. In addition, through the Internet, leading the society of fusion or hybrid, with gender and age broken-up, the feminine as well as kidult-like make-up has emerged. On the other hand, with the influence of well-being on the whole society, well-looking appears outside, and lohas inside. The W generation prefers glossy make-up in order to make the skin healthy and polished, and eco-friendly products with lohas.

• Journal of Power Electronics
• /
• v.2 no.1
• /
• pp.11-18
• /
• 2002

The development of the solar and the wind energy is necessary since the future alternative energies that have no pollution and no limitation are restricted. Currently MW Class power generation system has been developed, but it still has a few faults with the weather condition. In order to solve these existing problems, combined generation system of photovoltaic and wind power was suggested. It combines wind power energy and solar energy to have the supporting effect from each other. However, since even combined generation system cannot always generate stable output with everchanging weather condition, power storage apparatus that uses elastic energy of spiral spring to combined generation system was also added for the present study.