• East Asian Economic Review
• /
• v.20 no.2
• /
• pp.191-228
• /
• 2016

This paper analyzes the role of absorptive capacity in R&D spillovers through strategic R&D investments in a game-theoretic framework. In the model, a firm's effective R&D is composed of idiosyncratic R&D, which produces its own innovations, and identical R&D, which improves absorptive capacity. The model shows that in the presence of absorptive capacity firms have a tendency to underinvest (overinvest) in idiosyncratic (identical) R&D relative to the social optimum. As the spillover becomes larger, firms decrease their own R&D while they become more inclined towards strategic exploitation of rivals' efforts. Since the former effect overpowers the latter, the total amount of R&D decreases as the spillover increases. This is socially undesirable, providing a potential justification for a governmental subsidy for idiosyncratic R&D and a tax on identical R&D. The findings may have important implications for newly industrialized or emerging countries that consider a redirection of national R&D policy and intellectual property rights (IPR) regime.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2000.11a
• /
• pp.140-143
• /
• 2000

This research presents new type of remote monitoring and control solution of PLC that can be used bi-directional and efficient management of factory automation through internet. This system has client/server architect for information handling between PLC and remote computer where a user can control and monitor target PLC. Actually the authors redirect RS232C connection between PLC and server computer into Internet connection between PLC and remote client computer using supplied PLC tool program So user feel like in front of PLC panel when he operates remote PLC through Internet. Each client/server program is constructed with Java language for security. In this paper the internet-based remote control system was proposed and proved validity by being applied to redirection of PLC control for factory automation.

• Proceedings of the IEEK Conference
• /
• 2008.06a
• /
• pp.649-650
• /
• 2008

In order to resolve mechanical limit in HDD, recently, the hybrid hard disk combining HDD and a flash memory was launched. In this paper, we propose a simulator for hybrid hard disk which considers redirection, flushing and spin-down function to complement the difference between HDD and hybrid hard disk. The simulator was implemented in linux kernel 2.6.20 by modifying system calls related with file system. The experiment shows that the power consumption of hybrid hard disk is 47% smaller than that of hard disk in laptop PC.

• Journal of Chest Surgery
• /
• v.28 no.2
• /
• pp.177-179
• /
• 1995

Sinus venosus type atrial septal defect is commonly associated with partial anomalous pulmonary venous return[PAPVR . Ideal surgical repair of sinus venosus ASD with PAPVR demands complete closure of septal defect with redirection of the anomalous pulmonary venous return to the left atrium without obstructing the superior vena cava[SVC or the anomalous pulmonary vein and without injury of sinoatrial node and residual shunt. In our two patients, the closure of sinus venosus ASD and correction of PAPVR could be accomplished by simple direct sutures without using a patch or flap. Both patients had a good outcome.

• Journal of Global Scholars of Marketing Science
• /
• v.3
• /
• pp.235-251
• /
• 1999

This research deals with the basic ideas and implementation used for developing competitive advantage in the market they serve. The market to which a company belongs is continuously evolving, not static. Therefore, the company is required to adopt a suitable strategy in the market it serves. Marketing strategy establishment requires continual adjustment in the strategy content and redirection in organizational actions to address emerging market problems and opportunities. Much of the strategic implementation is characterized by firefights aimed at solving emerging, unforeseen problems. The concept of strategy was originally introduced to provide companies with a rational means of coping with environmental changes. An old Oriental proverb said that "knowing myself and then understanding others is the best way to success". In line with the proverb, the starting point of marketing strategy establishment for the competitive advantage is to understand the activities of a company wholly. After analyzing the scope of its activities, a company has to understand the market structure, to review competitive environments, to formulate the base of the competitive strategy and to adopt differentiation strategies for obtaining the competitive advantage.

• Journal of Information Technology Services
• /
• v.3 no.2
• /
• pp.53-64
• /
• 2004

For many reasons, SI(Systems Integration) projects can fail. Sometimes, they can result in considerable financial losses to the organizations that undertake them. These projects are abandoned or redirected. However, the cost of project abandonment or redirection can represent a tremendous waste of organizational resources. By managing failure factors carefully, project managers can prevent projects from failing. Types of project failure can be categorized into escalation and de-escalation. Project escalation is that, as projects progress, the project scopes keep increasing. Project de-escalation is that, as projects progress, the project scopes keep decreasing. This study examine relative importance of risk factors that cause project escalation and de-escalation.

• 한국연소학회:학술대회논문집
• /
• 2006.04a
• /
• pp.32-38
• /
• 2006

A premixed flame propagating in a tube suffers strong variation in its shape and structure depending on boundary conditions. The effects of thermal boundary conditions and flow fields on flame propagation are numerically investigated. Navier-Stokes equations and species equations are solved with a one-step irreversible global reaction model of methane-air mixture. Finite volume method using an adaptive grid method is applied to investigate the flame structure. In the case of an adiabatic wall, friction force on the wall significantly affected the flame structure while in the case of an isothermal wall, local quenching near the wall dominated flame shapes and propagation. In both cases, variations of flow fields occurred not only in the near field of the flame but also within the flame itself, which affected propagation velocities. This study provides an overview of the characteristics of flames in small tubes at a steady state.

• Proceedings of the Korean Information Science Society Conference
• /
• 2007.10d
• /
• pp.540-544
• /
• 2007

인터넷의 급속한 성장은 사람들의 정보 습득 방식에 큰 변화를 주었다. 인터넷 이용자들은 과거와 비교도 할 수 없을 만큼의 많은 지식을 손쉽게 접할 수 있게 되었다. 하지만, 그로 인해 여러 가지 문제점들이 생겨나게 됐는데, 웹 스팸도 그 중 하나이다. 웹 스팸은 웹을 통한 불법적인 활동으로 이득을 보려는 활동을 통칭할 수 있다. 웹 스팸은 검색 엔진 결과 리스트의 순위를 올리기 위해 사용되는 것이 대부분이지만, 점점 검색 엔진 결과 리스트의 순위와 관련 없는 것들에서도 나타나 생겨나고 있다. 웹 스팸은 종류도 다양할뿐더러, 아직까지 모든 웹 스팸을 예방할 확실한 방법이 제시되지 못하고 있다. 이 논문에서는 여러 웹 스팸 중 페이지-하이딩 스팸에 속하는 URL 리다이렉션에 대해 다루고자 한다. 다른 웹 스팸과 마찬가지로, 현재까지 자동적으로 URL 리다이렉션을 탐지하는 방법이 제시되지 못하고 있는 실정이다. 이 논문에서는 검색 엔진 결과 리스트의 순위를 사용하여 URL 리다이렉션을 탐지 기법을 제안하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2003.05c
• /
• pp.2157-2160
• /
• 2003

인터넷의 급속한 발전과 네트워크 시스템의 다양화는 인간에게 편리함을 주는 여러 인프라의 혜택을 주는 반면에 악의적인 사용자로부터의 독창적이고 새로운 유형의 침입들을 야기하고 있다. 하지만, 현재 대부분의 보안 시스템이 침입에 대한 탐지 및 대응 기술에 역점을 두고 알려지지 않은 침입에 대한 탐지 및 신속한 대응이 어렵다. 본 논문에서는 세션 재지정을 이용한 HoneyPot 시스템과 다른 보안 툴과의 연동을 위한 설계 및 구현에 관해서 연구함으로써 기존의 HoneyPot 시스템이 가지는 대응 방법뿐 아니라 능동적이고 효과적인 대응방법에 대해서 제시한다.

• The Transactions of the Korea Information Processing Society
• /
• v.5 no.12
• /
• pp.3221-3229
• /
• 1998

본 논문은 광역 이동컴퓨팅 환경에서 계층적인 네트워크 확장에 적합한 새로운 계층적 위치수정(Location Update)과 경로설정(Routing) 방안을 제안한다. 제안된 방안은 통신을 가장 빈번하게 요구하는 고객영역(Patron Area)의 경계에 있는 일단의 방향선회(Redirection)에이전트들로 위치수정을 제한하기 때문에 위치수정의 수를 줄이게 된다. 계층적 방향선회 개념의 적용으로 고객영역 내에서 호스트 이동에 대한 위치수정 부담이 없어진다. 가벼워진 위치수정에도 불구하고 이동호스트의 홈(Home) 네트워크의 홈 에이전트를 거치지 않고 대부분의 통신이 이루어지기 때문에 최적에 가까운 경로설정을 제공한다. 제안된 방안은 위치수정 및 경로설정의 효율성 관점에서 기존의 계층 및 비 계층 위치수정 방안과 비교 분석하였다.