• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.394-400
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• 2018

Recently, it is expected to significantly increase the defense budget by acquiring large-scale weapons systems to enhance defensive capabilities. In order to secure funds needed to acquire such weapons systems, it is necessary to improve the efficiency of the defense budget. In addition, interest in economic factors affecting the domestic economy such as export opportunities and employment creation are increasing, as well as budget reduction of the defense acquisition business. In order to respond to these demands, this study conducted cost- benefit analysis and examined economic ripple effects in the implementation of defense procurement projects. However, research on economic analysis methodology considering characteristics of defense acquisition projects is still in its early stage. This study proposes a methodology to analyze the economic feasibility of defense acquisition projects and conducted a case study on the economic feasibility of the ${\bigcirc}{\bigcirc}$ guided missile project which is being prepared against local provocation. The proposed economic analysis method provides the cost-effectiveness analysis that has been performed in many weapon system acquisition projects in connection with the more general cost-benefit analysis method. This study contributes to the establishment of an improved theoretical methodology for weapon system acquisition projects.

• Information Systems Review
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• v.11 no.1
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• pp.49-67
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• 2009

E-mail marketing is the cheapest channel in target marketing. The channel works amazingly well for marketers who know how to use it. The e-mail marketers are able to integrate transactional and behavioral data to improve the targeting content of e-mail marketing campaigns. The cost in e-mail marketing is low and e-mail marketing makes no pollution. But, the e-mail response rate is lower than all the other channels. So, it is very hard for companies to increase their sales volumes, though the companies are ready to execute e-mail marketing campaigns on the side of computer systems. Marketers can send messages easily to target customers compared to other channels. But, the possibility to be read by the customers is low. Normal e-mails are continually devalued by spam mails. This study shows the influence of e-mail marketing to increase sales used by credit cards, on the basis of the real data promoted by A bank, in the Republic of Korea. The analysis on the traits of the respondent can help marketers to target customers. If additional studies on the response prediction model on the basis of traits of potential respondents are done, the targeting method to increase the effectiveness of e-mail marketing will be better structured and organized.

• Journal of Korean Society of Forest Science
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• v.81 no.3
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• pp.203-213
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• 1992

The purpose of this study is to segment recreationists into groups which are homogeneous with respect to their spending patterns and trip characteristics. Date were derived from a larger study aimed at developing nationally representative expenditure profiles for recreation visitors to Corps of Engineers projects. Segmentation of these data reduces variance and helps to identify distinctive final demand vectors for input - output application. A - priori and cluster analysis approaches for identifying segments are compared. The a - priori segmentation approach identified 12 segments and the cluster analysis approach identified 3 segments. The 3 nonresident clusters - labeled "day use", "overnight", and "overnight camping" - show lower mean squares within groups than the a - priori segments on almost all nonresident spending categories with an exception of boating expenses. For the Corps of Engineers, implications of these findings for the estimation of economic impacts are discussed.

• Journal of the Korea Society of Computer and Information
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• v.6 no.3
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• pp.122-130
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• 2001

The purpose of this study is to find the economic effect of educational investment. In order to finding this. I have investigated to historical background of educational investment and as the method of analysis I examined the rate of return approach such as the residual approach. and the simple correlations approach. Historically, economics of education has concentrated on surrounding the relationship between education and economy, which the implicit assumption that investment in education contributed to increase the quality and productivity of the labor force and thus raise future individual and national income levels. First of all, at this paper I found to need boldness to increasing the amount of education budget annually and also positively studying about economics of education in Korea for high and good quality analysis of expansion economy and education.

• Environmental and Resource Economics Review
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• v.14 no.4
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• pp.923-941
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• 2005

Odor problem of livestock operation is important issue in a local community. I quantified the property price impact of 199 livestock operations for 3,355 housing sales in the U.S (Colorado). Spatial hedonic model was adopted to deal with spatial autocorrelation in housing market. Small beef and dairy operations, which are the traditional agricultural sector, seem to create a positive rural lifestyle amenity effect. However, the impact of livestock operation on rural residential sales turns to negative if the operation is over a certain size and species. Large hog and sheep operation seems to bring fatal economic loss from the local community perspective if it close to residential area. Livestock odor is one of the negative externality, the results provide the potential social cost of the livestock sector in the region. Policy makers may incorporate this social cost in the regional planning to minimize the social and maximize the development effect. Therefore, local officials and private individuals should carefully consider the location and characteristics of new residential properties and livestock operations alike.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.337-339
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• 2003

코드검증은 소프트웨어공학에서 제안한 개발 프로세스 상의 여러 절차 중 비용 대 효과 측면에서 가장 효과적이라고 알려져 있다. 그러나 코드검증 절차 도입 초기에는 적용에 따른 기대 수준이 낮으며, 추가 작업에 대한 개발자와 관리자의 부담이 높기 때문에 투입시간, 자원할당 등의 계획은 설득력 있는 근거를 바탕으로 체계적으로 수립되어야 한다. 본 논문에서는 기존 제품 개발 시 발생되었던 결함의 원인 분석과 결함 제거에 투입된 공수 산출을 바탕으로 코드검증 절차를 개발 프로세스 상에 도입, 계획할 수 있는 방안을 제시한다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2007.10a
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• pp.227-230
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• 2007

대규모 노천광산의 개발과정에서 배수 및 운반 설계는 매우 중요한 작업 요소이며, 그 결과에 따라 채광 효율성과 광산 운영비용이 크게 달라질 수 있다. 본 연구에서는GIS를 이용하여 노천광산의 배수 및 운반 시스템을 최적화할 수 있는 새로운 채굴적 설계 방안을 제시하였다. 대부분의 노천광산에서 빈번하게 수행되는 지상 지형측량 결과를 이용하여 수치표고모델을 생성하였고, 수계분석 알고리즘을 적용하여 강우시 노천광산 배수 시스템의 특성을 분석하였다. 또한, 최적경로 분석 알고리즘과 다중 의사결정 기법을 접목하여 폐석 트럭의 최적 운반경로를 분석하고, 트럭 운반 시스템의 효율성을 평가할 수 있는 방법을 제시하였다. 인도네시아 파시르 석탄 노천광산을 대상으로 적용시험을 수행한 결과, 배수 및 운반 설계 과정에서 GIS가 효과적으로 활용될 수 있음을 확인할 수 있었다.

• Journal of Digital Convergence
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• v.11 no.1
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• pp.199-209
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• 2013

This study empirically investigates how the switching barriers influence the consumer's perceived intention to change his or her current favorite internet shopping mall. Drawing from switching cost theory, variables pertaining to trust, shopping mall service quality, product price, web page quality, switching barriers were examined to examine the consumer's behavioral intention to switch to another shopping mall. The interaction effect of consumer involvement was also included in the research model. The results of the study report that customer satisfaction and switching cost influence shopping switching intention, while the effect of attractiveness of the shopping mall was not significant in the statistical analysis. Furthermore, a moderating effect of consumer involvement was not found significant in the PLS analysis. The study demonstrates the shopping mall owners try to increase the customer's overall satisfaction and raise the switching barrier by providing mileage advantages, for instance.

• Journal of Labour Economics
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• v.40 no.1
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• pp.1-36
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• 2017

This study aimed to analyze influencing factors to increase the wage differential between large enterprise and subcontracted small-medium enterprises by using panel data composed of 19 manufacturing industries for 16 years from 1999 to 2014. According to the results of analysis, in large enterprises the elasticity of substitution between the labor inputs and the subcontracted product supplies from small-medium enterprises was significantly less than 1. So, the increase in wages of workers of large enterprises, whose degree of employment protection was relatively high, seemed to increase the share of wage cost in total cost and was resulted to decrease the cost share of subcontracted product supplies significantly. This was interpreted to be able to exert a negative influence upon the price of subcontracted product supplies and the wages of workers in subcontracted small-medium enterprises, and, therefore, to increase the wage differentials between large enterprises and subcontracted small-medium enterprises. Furthermore, it was also found that the increases in the labor union participation rate at large enterprises and the openness rate of the industry concerned were contributing to make such effects much stronger significantly. In order to mitigate the wage differentials and the polarizing trend in labor market, we can suggest to establish a certain kind of flexible wage system and to introduce co-bargaining practices with the workers of subcontracted small-medium enterprises within large enterprises, and also for the workers of small-medium enterprises, to prepare new social systems to upgrade their human resources and job skills drastically.

• The Journal of the Korea Contents Association
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• v.12 no.2
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• pp.388-397
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• 2012

Recently, KOSDAQ company's cyber IR activities has increased. Major advantages offered by the Internet include low cost and high accessibility the Internet is used as a strategic tool of many KOSDAQ companies in IR activity. Thus, this study tried to empirically analyze the overall impact of cyber IR. And this study examine the difference in impact of cyber IR activity on stock prices in the period before and after depending on ownership structure and venture or not. The main result of the study can be summarized as follows. First, IR activities have a positive impact on KOSDAQ firms stock price. This means that the investors are recognizing IR activity of KOSDAQ firm as a good news. Second, The lower stock ownership have great impact on stock prices. The act of reporting and monitoring system are performing effectively to lower stock ownership as compared with higher stock ownership. Third, The return rate of KOSDAQ venture firms with IR enforcement effect appears high than KOSDAQ firms with IR enforcement.