• Journal of the Korea Institute of Military Science and Technology
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• v.24 no.1
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• pp.133-143
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• 2021

In government procurement programs, cost estimation and analysis support funding decisions and are the basis for other major decisions, too. Such estimating and analyzing the cost of the weapon systems are crucial in execution of the defense budget. However, existing cost estimations and analyses have focused on domestic R&D projects, thus those are not valid in application to foreign weapon acquisitions. This study aims at foreign weapon systems that are acquired from Direct Commercial Sales. Because the data for price estimation of a foreign weapon is usually not available, we suggest a price estimation model based on performance factors of the weapon. In this study, the proper price of the weapon system is estimated using the parametric cost estimating model. Using the data of helicopter-launched anti-tank guided missiles worldwide, we analyze the effect of each performance factor on the weapon system price by regression analysis, and use step-wise and ridge regression analysis to remove multi-collinearity. This study hopefully contributes to more reasonable decision making on proper price of weapons.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.584-585
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• 2021

As the production of new and renewable energy such as solar and wind power has diversified, microgrid systems that can simultaneously produce and consume have been introduced. In general, a decrease in electricity prices through solar power is expected in summer, so producer protection is required. In this paper, we propose a transparent and safe gift power transaction system between users using blockchain in a microgrid environment. A futures is simply a contract in which the buyer is obligated to buy electricity or the seller is obliged to sell electricity at a fixed price and a predetermined futures price. This system proposes a futures trading algorithm that searches for futures prices and concludes power transactions with automated operations without user intervention by using a smart contract, a reliable executable code within the blockchain network. If a power producer thinks that the price during the peak production period is likely to decrease during production planning, it sells futures first in the futures market and buys back futures during the peak production period to make a profit in the spot market. losses can be compensated. In addition, if there is a risk that the price of electricity will rise when a sales contract is concluded, a broker can compensate for a loss in the spot market by first buying futures in the futures market and liquidating futures when the sales contract is fulfilled.

• Journal of the Korean Society of Clothing and Textiles
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• v.24 no.7
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• pp.1056-1064
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• 2000

The aim of this paper was to look at distribution intensity of casual wear brand before and after IMF Management System. It also provides the guide to distribution design and reinforces the strategy of the brand of it. Since the firm especially in casual wear industry recently has had difficulty in how to decide and to select the distribution numbers in the domestic market. Based on the data in‘98 Korea Fashion Guide’and ‘Korean Fashion Brand Annual’, 78 brands had been analyzed with percentage, multiple regression. The results were as follows: In general, the lower the price of the product is and the higher the total sale is, the more intensive the distribution of the casual wear brand is before and after IMF Management System. The longer the launching period is, the more intensive the distribution of the casual wear industry is after IMF Management System. Besides, there is difference between the brand origins in the distribution intensity. In addition, two brand types were classified and tested. The distribution intensity of jean casual wear and uni-sex casual wear have related to the price after IMF and the total sale before and after IMF Management System while there is no relationship with the launching period before and after IMF Management System. The distribution intensity of the domestic brand have related to the price, and the total sale, while the foreign brand has a relationship with the total sale before and after IMF Management System. The foreign brand has related only to launching period after IMF Management System.

• The Journal of Fisheries Business Administration
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• v.23 no.2
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• pp.101-128
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• 1992

How to distribute fisheries catches from producer to consumer is very important for everybody joined fisheries marketing channels (FMC), because most people are influenced their revenue and expenditure through marketing channels. Many institutions in Korea after 1960's have tried to develop the rationalization of FMC, but they have not gotten the satisfactory results in general in spite of a lot fruits. Comparing with general manufacturing industry, the fisheries industry has some specializations in the marketing channels. It makes them unique structure included wholesale market system similiar to fresh (perishable) food market with expertised technology. Wholesale market collects, distributes the fisheries catches and evaluates in by auction or bidding without consideration of producer's opinion. It is very necessary institution to make a decision to equatible price for fresh food and to play an important role for marketing effectiveness with minimum total transation and with massed reserve among institutions. But it has two weak points to increase the marketing cost and to make products bad fresh (perishable). Therefore, both Producer and consumer want to find the direct channels not to pass through wholesale market and to get more profit. I wanted to explain what problems of traditional FMC are and why the direct channel is necessary as follows in this paper. Chapter II : The types and specialization of FMC Chapter III : The structure and problem of fisheries wholesale market channel Chapter IV Marketing cost of FMC and direct channel I suggested when the direct channel in FMC is designed, new planner must carry out marketing functions which are performanced by wholesaler, middle man and the joined members of auction at wholesale market. In view of consumption area, these functions are : (1) the finding of production partner to make a business ; (2) communication of information ; (3) collecting ; (4) distribution ; (5) selecting and grading ; (6) evaluating ; (7) financing and payment ; (8) organization, in view of consumption area. The government must support also the group or individual of new direct channels to succeed it with (1) furnishing of market information (2) supplying of land and facility (3) financing (4) feed-back of dierct channels totally (5) making an opportunity of communication between producer and consumer. I want to emphasize again wholesale market is necessary and important institution for equatible price of fresh food in spite of the its weak points. At the same time. the direct channels are necessary to reduce the marketing cost and to keep better fresh food.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.215-221
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• 2019

The development of blockchain-based art trading platforms has not been revitalized despite the recent recovery of the cryptocurrency market. In this paper, we found that blockchain-based art trading platform is not revitalized due to the large volatility of cryptocurrency price. As a solution, we propose a trading system using dual types of cryptocurrency that one is Stablecoin and the other is legacy cryptocurrency. Through cryptocurrency dualization, the proposed system can satisfy both user's requirements of stability of art price and value growth of the blockchain system. In addition, the proposed system is expected to be able to balance the use of dual cryptocurrencies and market capitalization ratios according to market principles. Finally, the proposed cryptocurrency dualization is expected to be used in other applications that require both the stability of the value of transactions and the growth of the value of the blockchain system.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.20 no.41
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• pp.79-86
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• 1997

This study is tested the information effects of convertible bond(CB). In orter to examine the abnormal stock returns of convertable day of CB, this study were selected 134 samples for the period from Jan.1988 to Dec.1994. There are some empirical studies which pesent evidents that CB are converted day of CB. The results of empirical study are summarized as follows. As in korea stock market, abnormal stock returns of CB have influenced on convertable day of CB. The day has some affirmative influences but it takes away stock price pressures, the amount of stock and dilution effects. As the results, related corporate stock price falled in preference to market abnormal returns.

• Journal of Korean Institute of Industrial Engineers
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• v.30 no.3
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• pp.241-249
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• 2004

By committing to a long-term replenishment contract, suppliers can mitigate the pressure to find new customers and afford to charge a discounted price to buyers seeking to lower their purchasing costs. In this paper, we develop an analytical model from buyer's perspective for the contracting process to investigate the buyer-supplier interactions. Based on the developed model, we propose an algorithm to derive optimal strategy for the contract. We consider a system with a single buyer and a supplier in a situation where the buyer's inventory is controlled by (R, S) policy under VMI setting. According to the contract, the supplier should replenish the buyer's inventory up to a fixed level every R times during a specified period. The buyer purchases any deficient amount from a spot market at a higher price. We show by computational experiment that our proposed algorithm finds the global optimum solution.

• KIEE International Transactions on Power Engineering
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• v.5A no.2
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• pp.193-198
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• 2005

This paper proposes a new method to handle transmission line losses using loss distribution factors (LDF) rather than marginal loss factors (MLF) in electricity market operation. Under a competitive electricity market, the bidding data are adjusted to reflect transmission line losses. To date the most proposed approach is using MLFs. The MLFs are reflected to bidding prices and market clearing price during the trading and settlement of the electricity market. In the proposed algorithm, the LDFs are reflected to bidding quantities and actual generations/ loads. Computer simulations on a 9-bus sample system will verify the effectiveness of the algorithm proposed. Moreover, the proposed approach using LDFs does not make any payments residual while the approach using MLFs induces payments residual.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.780-784
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• 2003

This parer propose a new method to calculate nodal price which is very useful data in electric market under non-optimal operation. To calculate nodal price, we employ marginal cost and power flow, and consider network loss, generator capability, and line capability. The proposed method is applied to the test system and the usefulness is verified.

• Korean Journal of Organic Agriculture
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• v.11 no.2
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• pp.23-42
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• 2003

The study must have standpoints for the stable market construction of the Environmental-Friendly agricultural products of the quality-certificated which has rapidly grown due to a discussion of the environment and agriculture, income increase and the interests on foods stability. The survey was conducted through face-to-face interview of 200 adults who are in their twenties or more in Cheonan-city. In this research, the Environmental-Friendly agriculture was a clean agriculture not using a fertilizer or chemicals and the agriculture which protects the environment by preventing the environmental pollution. In the analyses of the consumer's willingness to pay, the rice showed 69,851 won, and a lettuce and bean-curd showed 947 won and 1.412 won respectively. In terms of current issues of the policy, to establish the stable circulation structure and consumption strategy, there must be a clearness raise of the Quality Authentication (QA) Mark. To raise the trust through quality authentication, there must be transparency raise of information by distribution stages and the thorough post management of the official institutes. Also, to persue the competitive product differentiation, there must be the settlement of the product brand on the market, development of the new production technology and a classification of consumers by incomes. Finally to construct stable distribution and price system, there must be active participation of the local agricultural cooperatives in the distribution of the Environmental-Friendly agricultural products of the quality-certificated and the understanding of the proper price of the consumer market and flexible strategy of the price change.