• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.10
• /
• pp.3761-3771
• /
• 2010

This study, based on social capital theory, aims to explore how social network characteristics among organization members affect the absorptive capacity which is the ability to recognize the value of new information, assimilate it, and apply it to commercial ends. This paper also empirically investigates how the absorptive capacity will have an effect on organizational innovation performances toward achieving competitive advantages in the knowledge society. According to the degree of relationship intensity, social network shows two different characteristics: strong tied network and weak tied network. As strong tied network and weak tied network have relatively different network characteristics, this study assumes that each network affects the absorptive capacity with different aspects. Furthermore, we consider the moderation effect of a social network manager's ability in the relationship between social network and absorptive capacity. We surveyed innovative project performers who are engaged in the knowledge based industries. The empirical analysis results show that both strong tied and weak tied network positively affect the absorptive capacity. Successively, the absorptive capacity also has a positive impact on innovation performances.

• Convergence Security Journal
• /
• v.3 no.1
• /
• pp.31-37
• /
• 2003

This paper proposed a model supporting secure mechanism both group communication service and subgroup communication service of TETRA system that the standard developed by the technical committee Radio Equipment and Systems(RES) of the European Telecommunications Standards Institute(ETSI) provides a pure digital information technology for the transmission of speech and data. In each scheme, members in a subgroup maintains its subgroup key, which is not distributed, but computed by each member in the subgroup only with his own secret information and public values and secure subgroup members in a same subgroup can communication securely each other by using their subgroup key. Also, all members in group can share securely a group key. In communication services of TETRA system, this model supports mechanism for both group and subgroup communication are simultaneously needed.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2004.05a
• /
• pp.527-531
• /
• 2004

일반적으로 통신 산업에서 기술혁신은 매우 활발하게 이루어지는 반면 조직혁신은 상대적으로 미진하게 진행된다. 왜냐하면 조직혁신은 사업전략의 변화와 달리 변화의 도입과정을 거쳐 정착단계에 이르기까지 많은 비용과 시간이 소요되는 과정이기 때문이다. 그러나 조직혁신 과정이 많은 비용과 시간이 소요된다고 할지라고 급변하는 환경 변화 하에서 기업의 비전을 효율적으로 달성하기 위해서는 기업의 사업목표에 적합한 조직구조와 문화의 정착이 선결되어야 한다. 따라서 본 연구는 조직혁신에 관한 이론 및 모형 고찰을 통하여 통신사업자의 바람직한 조직혁신 방안을 도출하고자 하는 것을 목적으로 하고 있다. 이를 위해 조직혁신 분석 모형을 개발하고, 이 모형을 통해 통신사업자의 조직${\cdot}$구성원 ${\cdot}$기업문화 등의 혁신을 위한 방안을 도출하였다는 점에서 그 의의가 있다고 하겠다. 그러나 통신 사업자들을 위한 성공적 조직혁신 방안이 다른 산업 분야의 조직혁신 방안과 뚜렷한 차별화를 보이지 못하고 있다는 점과 통신 사업자들을 대상으로 하는 실증적 분석이 제대로 이루어지지 못했다는 점에서 그 한계점이 있다고 하겠다. 향후 본 연구를 기반으로 하는 연구에서는 좀 더 구체적인 통신 사업자들을 위한 차별화된 전략적 대안 및 구체적 실행 방안 도출이 요구되며, 주요 통신 사업자들을 대상으로 하는 내부설문 등을 통해 사업자의 구성원들이 필요로 하는 조직혁신 방안을 도출할 필요가 있다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2002.04b
• /
• pp.361-363
• /
• 2002

최근 객체지향 기법보다 효율적인 재사용성과 대체성을 지원하는 컴포넌트 기법에 대한 인식의 확대로 많은 업무용 시스템들에 대한 컴포넌트 기반 시스템으로의 재개발 또는 재개발 요구가 증가하고 있으며 이에 따라 레거시 시스템을 컴포넌트 기반 시스템으로 전환하기 위한 연구 또한 활발히 진행되고 있다. 본 논문에서는 레거시 시스템의 사용자 인터페이스를 컴포넌트화 하기 위한 전환 프로세스를 제시한다. 전환 프로세스는 레거시 시스턴 사용자 인터페이스 구성 분석, 컴포넌트 유형 분석, 컴포넌트 전환 패턴 개발. 컴포넌트 설계 및 구현 사용자 인터페이스 요구사망 테스트의 다섯 단계로 구성되어 있다. 레거시 시스템 사용자 인터페이스 구성 분석단지에서는 사용자 인터페이스의 화면구성파 내부로직을 분석하고 사용자 인터페이스의 컴포넌트화 단위를 결정하며 컴포넌트 유형 분석단계에서는 사용자 인터페이스를 구현할 컴포넌트 기술을 결정한다. 컴포넌트 전환 패턴 개발단계에서는 사용자 인터페이스를 컴포넌트화 시키기 위한 전판 패턴을 설계하며 컴포넌트 설계 및 구현 단계에서는 설계된 전환 패턴에 따라 사용자 인터페이스를 컴포넌트화한다. 사용자 인터페이스 요구사항 테스트단계에서는 개발된 컴포넌트가 레거시 시스템의 사용자 인터페이스에 대한 요구사항을 만족하는가를 확인한다. 제시한 프로세스를 적용할 래거시 시스템의 사용자 인터페이를 컴포넌트화한 구현 사례를 통해 사용자 인터페이스와 관련된 코드의 재사용 방범을 제시한다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.12
• /
• pp.5721-5727
• /
• 2012

In this study, we examine the effect of customers's participation and satisfaction on performance of IT project. This study collected data from the project team members of the next-generation internet banking project in K Bank. We found that customers's participation has positive effect on their satisfaction of IT project and the satisfaction also has a positive influence on performance of IT project. Implications and directions for future research are discussed.

• Journal of Energy Engineering
• /
• v.20 no.1
• /
• pp.1-7
• /
• 2011

The performance and life-cycle costs of electric vehicle(EV) and hybrid electric vehicle(HEV) depend inherently on battery packs. Temperature uniformity in a pack is an important factor for obtaining optimum performance for an EV or HEV battery pack, because uneven temperature distribution in a pack leads to electrically unbalanced battery cells and reduced pack performance. In this work, a three-dimensional modeling was carried out to investigate the effects of operating conditions on the thermal behavior of a lithium-ion battery pack for an EV or HEV application. Thermal conductivities of various compartments of the battery were estimated based on the equivalent network of parallel/series thermal resistances of battery components. Heat generation rate in a cell was calculated using the modeling results of the potential and current density distributions of a battery cell.

• Journal of KIISE:Computer Systems and Theory
• /
• v.34 no.12
• /
• pp.656-664
• /
• 2007

Field-Programmable Gate Arrays (FPGAs) are a revolutionary new type of user-programmable integrated circuits that provide fast, inexpensive access to customized VLSI. However, as the target application speed increases, power-consumption and wire-delay on interconnection become more critical factors during programming an FPGA. Especially, the interconnection of the FPGA consumes 65% of the total FPGA power consumption. A previous research show that if the length of interconnection is shirked, power-consumption can be reduced because an interconnection has a lot of effect on power-consumption. For solving this problem that reducing the number of wires routed, the three dimension FPGA is proposed. However, this structure physical wires and an area of switches is increased by making topology complex. This paper propose a novel FPGA architecture that modifies the three dimension FPGA and compare the number of interconnection of Virtex II and 3D FPGA with the proposed FPGA architecture using the FPGA Editor of Xilinx ISE and a global routing and length estimation program.

• Journal of Digital Convergence
• /
• v.15 no.3
• /
• pp.47-54
• /
• 2017

In this study, the organizational performance is divided into the policy perspective, the customer perspective, and the internal viewpoint rather than the financial perspective. The public institutions selected as examples of this study are public institutes under the Ministry of Environment, which are established to promote environmental industry development and environmental technology development projects, and promote the dissemination and practical use of developed environmental technologies. The public institutions that were the target of the study were concerned about how to define organizational performance and how to improve organizational performance. In addition, the institutions were interested in measuring performance in terms of customers and policies rather than financial performance. As a result of this study, it was found that the public institutions which were the subject of study were not very high in terms of policy, customer, and internal performance. In order to enhance the organization's policy performance, customer performance and internal performance, it is necessary to communicate smoothly among the members of the organization, horizontal organizational structure, encourage participation in the client's policy process, and redesign the business process from the customer's perspective.

• Journal of Korean Tunnelling and Underground Space Association
• /
• v.2 no.3
• /
• pp.37-45
• /
• 2000

In recent years two reflection methods, i.e. GPR and seismic Impact-Echo, are usually performed to obtain the information about tunnel lining structures composed of concrete lining, shotcrete, water barrier, and voids at the back of lining. However, they do not lead to a desirable resolution sufficient for the inspection of tunnel safety, due to many problems of interest including primarily (1) inner thin layers of lining structure itself in comparison with the wavelength of source wavelets, (2) dominant unwanted surface wave arrivals, (3) inadequate measuring strategy. In this sense, seismic physical modeling is a useful tool, with the use of the full information about the known physical model, to handle such problems, especially to study problems of wave propagation in such fine structures that are not amenable to theory and field works as well. Thus, this paper deals with various results of seismic physical modeling to enable to show a possibility of detecting the inner layer boundaries of tunnel lining structures. To this end, a physical model analogous to a lining structure was built up, measured and processed in the same way as performed in regular reflection surveys. The evaluated seismic section gives a clear picture of the lining structure, that will open up more consistent direction of research into the development of an efficient measuring and processing technology.

• Journal of Advanced Marine Engineering and Technology
• /
• v.38 no.6
• /
• pp.751-760
• /
• 2014

The unmanned underwater vehicle(UUV) requires the highly dense energy source because of its limited space. Especially, for the UUV designed for long-term operation, it should be reviewed first whether it is possible to install the energy source against required total power. Therefore, this study identifies whether it is possible to install the energy source for the energy requirement of the UUV. And fuel and oxidizer requirement for the fuel cell system are calculated to determine its location and layout inside of the vehicle. Finally, we design the closed type 1kW polymer-electrolytic fuel cell system and check the applicability to underwater operations with UUV.