• KSCI Review
• /
• v.2 no.1
• /
• pp.13-34
• /
• 1995

• The Journal of the Korea Contents Association
• /
• v.16 no.3
• /
• pp.676-693
• /
• 2016

Although the methodology and models to assess the economic value of technology assets such as patents are being presented in various ways, there does not exist a structured assessment model which enables to objectively assess a database property's value, and thus there is a need to enhance the application feasibility of practical purposes such as licensing of DB assets, commercialization transfer, security, etc., through the establishment of the valuation model and the life-cycle decision logic. In this study, during the valuation process of DB assets, the size of customer demand group expected and the amount of demand, the size and importance of data sets, the approximate degree of database' contribution to the sales performance of a company, the life-cycle of database assets, etc. will be analyzed whether they are appropriate as input variables or not. As for most of DB assets, due to irregular updates there are hardly cases their life-cycle expires, and thus software package's persisting period, ie. 5 years, is often considered the standard. We herein propose the life-cycle estimation logic and valuation models of DB assets based on the concept of half life for DB usage frequency under the condition that DB assets' value decays and there occurs no data update over time.

• Proceedings of the KIEE Conference
• /
• 2009.07a
• /
• pp.430_431
• /
• 2009

철도시스템은 급전, 기계, 전기신호 등의 분야가 결합된 시스템으로 대규모자본을 효율적으로 이용해야만 하는 문제를 안고 있다. 특히, 자기부상열차 시스템은 고도의 기술력이 필요로 하고, 현재 국내에서 개발 단계에 있는 시스템으로 비용 관련 연구가 더욱 필요한 실정이다. 따라서 국외의 철도시스템 및 자기부상열차 시스템에 대한 수명주기비용(Life Cycle Cost, LCC) 연구 동향을 바탕으로 하여 국내의 자기 부상열차 시스템에 적용할 수 있는 수명주기비용에 관한 모델을 제안하고자 한다.

• Management & Information Systems Review
• /
• v.29 no.4
• /
• pp.23-44
• /
• 2010

This study examines the value-relevance of accruals and discretionary accruals. Also, by examining the effects of the corporate life-cycle on these relationship, this study is able to provide evidence of the value-relevance of accruals and discretionary accruals measures in the economic context of life-cycle theory. This study uses results based on life-cycle classification methods developed by Anthony and Ramesh(1992), adjust Jones model and Dechow Dechev(2002) model. We classify firms using individuals variables(sales growth, capital expenditure growth, employee growth) and then use a composite score obtained from all variables for classification. Our sample consists of 272 firms listed in the Korean Stock Exchange during 14 years(1996-2009). Our final sample for regression variables consists of 2,448 firm-year observations. This evidence implies that the value-relevance of accruals and discretionary accruals in the growth and mature stage can have positive impact on the price but in the decline the value-relevance of accruals and discretionary accruals can have negative impact on the price. The results mean that discretionary accruals communicate managements' private information in the growth stage, but. earnings management in the decline stage. The results of this study suggest that corporate life cycle stages influence the value-relevance of accruals and discretionary accruals measures.

• Journal of Korea Technology Innovation Society
• /
• v.21 no.4
• /
• pp.1207-1236
• /
• 2018

This paper explores the life cycle of innovation cluster, especially focussing on the Korean representative innovation cluster, Daedeok Innopolis. For this purpose, we review theoretically how an innovation cluster has been growing up. In particular, we discuss how a cluster has been formed and activated by governmental innovation policies from an evolutionary perspective. By doing so, the study identifies the typical features of an innovation cluster according to each dimensions of the cluster life cycle. The results of this study are as follows: First, in this study, Daedeok Innopolis has characteristics of latency, emergence, growth, and maturity from evolutionary perspective. Second, the governmental structure of the Daedeok Innopolis is a strong government-led and top-down structure, which has features of inclusiveness and flexibility such as umbrella policy. Third, the Daedeok Innopolis can be seen that adaptive or renewal development, as while, it can be applied fine adjustment the innovation cluster policy towards the recognition of innovation obstacle at each dimensions of the life cycle. Therefore, these discussions expose what kind of policy interventions should be addressed to form and develop the innovation cluster according to the cluster life cycle, as while, the development of adaptive policies during the risk and take-off period. Ultimately, the study provides that a different kind of policy instruments and tools should be implemented according to innovation cluster development and its distinctive characteristic per each dimensions of the cluster life cycle.

• Transactions of the Korean Society of Mechanical Engineers
• /
• v.15 no.1
• /
• pp.49-60
• /
• 1991

Fatigue behavior of carbon fiber reinforced polyimide composite materials was studied experimentally and analytically. The physical variables, such as cyclic displacements and hysteresis loop energy were observed during fatigue tests. Fatigue life of the investigated [0/90]$_{2S}$ laminates was predicted by H'||'&'||'H models which was proposed based on the fatigue modulus and resultant strain. The predicted fatigue life by H'||'&'||'H curves was reasonably close to the experimental data. Fractography study shows that fatigue failure mechanism of [0/90]$_{2S}$ laminated composite materials involves failure break, matrix tearing and fiber-matrix debonding as well as delamination of layers.

• Aerospace Engineering and Technology
• /
• v.9 no.2
• /
• pp.90-97
• /
• 2010

A study about the fatigue life of copper alloy which is used in inner jacket of regenerative cooling chamber of liquid rocket engine has been performed. Mechanical properties of the material and fatigue life have been taken from tensile tests and low-cycle fatigue tests at room temperature and several elevated temperatures. Original universal slopes method, modified universal slopes method, Mitchell's method, Baumel and Seeger's method, and Ong's method have been used for predicting the fatigue data. It was found that the novel life prediction method should be developed for the copper alloys since almost all data have not been predicted well with the widely used methods.

• Journal of Korea Technology Innovation Society
• /
• v.12 no.2
• /
• pp.430-456
• /
• 2009

The industrial Technology Development Program enables the recipient to set up technology infrastructure and to facilitate technology diffusion. In return, government charges royalties to the program recipient. However, the current royalty system is not effective form. This study analyzes the various aspects of royalty collection methods applied to the Industrial Technology Development Program and recommends the following: a) to establish a royalty collection system with appropriate charges for both fixed royalties and running royalties, dependent upon type of technology development b) to seek a method to setup different collection periods for industrial categories in consideration of product life cycle c) to review on ownership of intangible property. In addition, in order to manage the entire royalty process effectively, prompt establishment is needed in order for a responsible evaluation institute to create task forces to evaluate technology value, to transfer technology, to support technology commercialization, to collect and manage royalty and expand and report result.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.50 no.9
• /
• pp.663-668
• /
• 2022

Since the early 2000s, the United States has applied TLCSM to reduce life cycle costs while maintaining the weapons system's combat readiness. With the application of TLCSM, the ILS concept centered on the acquisition stage shifted to IPS, a concept that manages life cycle costs throughout the entire life cycle. In addition, LSAR for developing ILS has switched to LPD for developing IPS. In this study, LSAR in Korea and LPD in the United States were compared and analyzed, and policies necessary for the introduction of LPD in Korea were proposed.

• The Journal of Society for e-Business Studies
• /
• v.24 no.2
• /
• pp.199-216
• /
• 2019

The public SW market is 3 trillion won, which is less than 10% of the total SW market. However, due to the nature of the domestic market, it is an important market with a relatively large impact on small and medium-sized software companies. In this market, government is operating the Public SW Project Demand Forecasting System in order to support the marketing activities of small and medium sized SW companies and establish a fair market order. The current system has limitations such as lack of user convenience, insufficient analysis capability and less business connection. This study was conducted to identify the problems of these systems and to propose a new system for improving the convenience of users and expanding the information utilization of SMEs. To this end, we analyzed the requirements of each stakeholder. We proposed the 2-phased forecasting cycle, the management cycle, and the system life cycle of public SW projects and created a unified identifier (UID) so that the information of those projects can be identified and linked among them. As a result, an integrated reference model of project information management based on system life cycle was developed, which can explain the demand forecasting and project information, and the improved processes was also designed to implement them. Through the result of this study, it is expected that integrated management of public SW projects will be possible.