• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.65 no.7
• /
• pp.1128-1134
• /
• 2016

Demand response provides customer load reductions based on high market prices or system reliability conditions. One type of demand response, price-based program, induces customers to respond to changes in product rates. However, there are large-scale general and industrial customers that have difficulty changing their energy consumption patterns, even with rate changes, due to their electricity demands being commercial and industrial. This study proposes an in-house pricing model for large-scale general and industrial customers, particularly those with multiple business facilities, for self-regulating demand-side management and cost reduction. The in-house pricing model charges higher rates to customers with lower load factors by employing peak to off-peak ratios in order to reduce maximum demand at each facility. The proposed scheme has been applied to real world and its benefits are demonstrated through an example.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.58 no.4
• /
• pp.694-699
• /
• 2009

Combined cycle plants which feature distinct advantages for power generation such as fast response, high efficiency, environmental friendliness, fuel flexiblity represent the majority of new generating plant installations across the globe. Combined cycle plants have different operating modes where the operating parameters can differ greatly depending which mode is operating at the time. This paper addresses the bidding strategy model of combined cycle plants in a competitive electricity market by using a characteristic of multiple operating modes of combined cycle plants. Simulation results of case studies show that an operating mode among multiple ones is selected strategically in generation bidding for more profit of generation company.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.28 no.3
• /
• pp.44-50
• /
• 2014

This paper describes reasonable methods by considering change of outdoor temperature into Customer Baseline Load(CBL) of Demand Resources in Smart Demand Resource Market, which controls peak power demand and maintains reliability of power system. The Smart Demand Resouce Market, which KPX(Korea Power Exchange) implement, is explained and then effects for CBL calculated by considering temperature correction factor are established. Finally, four methods for calculation of CBL are proposed and those results are compared and analyzed.

• Proceedings of the KIEE Conference
• /
• 2000.07a
• /
• pp.379-381
• /
• 2000

In the new electric industry, many of generators and consumers exist in competitive market and electric price is determined by the response of suppliers and consumers. Power supply and consumption make change the electric price and social welfare depends on the elasticity that indicates sensitivity to changes of price related on the electric demand or supply. If elasticity is changed, social welfare that represents the sum of producers and customers surplus will be changed together. This paper investigates the change of the social welfare depending on the elasticity, and presents the propriety of competitive electric market.

• Journal of the Korean Society of Food Culture
• /
• v.10 no.5
• /
• pp.419-425
• /
• 1995

General views of 1,436 housewives respondents through the country on commercial kochujang (fermented hot pepper-soybean paste) were surveyed by questionnaires. The 65.0% of total respondents had experience of purchasing commercial kochujang on the market, mostly super market (43.0%) of respondents, and the respondents who has job and live in apartment purchased the commercial products more often than the others (80.5%). The reason for purchasing commercial products were convenience (36.1%) and short of time (13.0%). The critera for purchasing commercial product were previous experience (40.1%) and well known trademark (20.6%) and not for purchasing were concerning of noxiousness (29.2%) and inferior taste (25.0%). Respondents prefered glass packing (44.3%) and plastic bottle (20.2%) of 500 g pack for single usage (42.3%). The most important standards for kochujang taste were pungency (59.1%) and savory taste (28.6%). The problems indicated to commercial products were inferior taste (32.2%), especially too sweet (52.6%), and safety (20.6%).

• Journal of the Korean Operations Research and Management Science Society
• /
• v.17 no.3
• /
• pp.101-135
• /
• 1992

An an exploratory attempt, this study examines the patterns of strategic changes of the firms and changes in strategic group structure in response to environmental changes of the industry. Empirical analyses of 39 firms in the Korean tile industry for the period of 1986-1990 reveals that :1) environmental changes had different impacts on attractiveness of different product/market segments :2) the relatively large firms in less attractive product/market segments were more likely to change their domains :3) according to their specific target product/market segments, the firms tended to strengthen different resource capabilities which were identified as key success factorss to compete in each target segment : and 4) these differences in strategic changes of the firms resulted in the changes in strategic group structure during the same period. Implications and the limitations of this study are finally discussed.

• Proceedings of the KIEE Conference
• /
• 2002.11b
• /
• pp.372-374
• /
• 2002

The Optimal Power Flow(OPF) is the optimization model that has different constraints and the specified objective function, which is very useful tool for efficient system and market operation in the competitive electricity market. The existed OPF models focus on the minimization of generation fuel cost under informed demand values at each bus Recently, the studies of OPF model with demand function considering the response behavior of customers in the deregulated electricity market have been executed. This paper implements the OPF model using demand function with specified price elasticity, and provides the analysis of related results.

• Asia pacific journal of information systems
• /
• v.11 no.3
• /
• pp.63-89
• /
• 2001

The purpose of this research is to develop strategic alternatives for the high-tech products development by comparatively studying characteristics of the industry and R&D structures in Korea and the US. Some of the environmental, strategic, organizational and project teams' characteristics are studied. Data were collected from Korea and US high-tech companies through interviews and questionnaires and event analysis method was used to analyze them. The findings are as follows: First, when the level of market concentration is high, cycle time tends to be longer. Therefore, if there are many competitors in the market, new products development should be swift due to competitive pressures. Second, the developmental strategy should be directed toward the existing customers to speed up new products development. That is, a defensive strategy would result in a shorter cycle time and response time compared to a strategy directed to a niche market. Third, when the level of formalization is high, cycle time tends to be shorter. This means that formal procedures for new products idea development or new products development policies shorten new products development time.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2013.05a
• /
• pp.265-267
• /
• 2013

Recently, It is being reduction to market of the domestic construction industry for the instability of the domestic market structure. So it is necessary to plan response measures for to ensure the competitiveness of the construction market of overseas. The purpose of the study is suggest of improvement of the project delivery system for the efficiency of the construction of the unit modular housing of considering the reducing cost and technological competitiveness of the domestic construction industry.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2005.07a
• /
• pp.497-499
• /
• 2005

A portable terminal assistant market grows rapidly every year and it requires many change in research on display devices. Among many newly developing methods, OLED(Organic Light Emitting Diode) is considered an advanced flat display device because its excellent characteristics, including high speed response, full color performance, low power consumption and flux of panel. However changes in the market of display shows that the market will require 3-dimensional images, but it is hard for existing 2-dimensional displays to make 3-dimensional images. Therefore we will try to find various methods such as holograms. In this paper, we will show existing flat displays can make 3-dimensional images by applying Lenticular Screen printing techniques on the organic semiconductor display device.