• 정보보호학회논문지
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• 제20권5호
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• pp.111-124
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• 2010

원격 검침 시스템(AMI : Advanced Metering Infrastructure)은 최근 활발히 추진 중인 스마트그리드의 핵심 인프라로, 구축비용 절감 및 운영의 효율성을 위해 무선 통신 기술 도입이 적극적으로 검토되고 있다. 하지만, AMI에 무선 통신 기술 적용 시 무선 통신의 보안 취약점 때문에 다양한 보안 위협이 발생 가능하기 때문에 이에 대한 대응책이 필요하다. 본 논문에서는 Binary CDMA 망을 이용한 AMI 네트워크 무선망 구조를 제시하고, 이에 대한 보안 대책으로 BSIM(Binary Subscriber Identity Module)을 중심으로 사용자 인증 및 무선 구간 암호화를 수행함으로써 AMI 무선 구간의 보안 위협을 감소시키는 방안에 대해 연구한다.

• Journal of the Korean Wood Science and Technology
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• 제49권3호
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• pp.254-266
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• 2021

Using forest resources involves solving complex and diverse tasks. At the same time, one of the key goals in the field is improving the quality of forest infrastructure. This direction requires adequate mathematical and economic justification. Moreover, creating an effective infrastructure will not only increase the accessibility and usage volumes of wood and other forest resources, but also contribute to the development of continuous and sustainable forest management. The existing practice of making decisions in terms of the organizational and technological aspects of logging, based on the personal experiences of managers or leading specialists in enterprises, hinders the achievement of constant optimal efficiency. The paper presents results that are a continuation of the research cycle of the authors' team in the fields of optimization and algorithmization of various logging processes. The focus of the study lies in the processing and movement of wood resources, the most valuable products of the investigated groups of enterprises. To this end, the paper presents a developed algorithm for determining an effective technological chain of transportation in logging operations, and for improving loading and unloading processing operations under dynamic natural and production conditions. This algorithm serves as the methodological basis for designing logging infrastructure in a dynamically changing environment.

• The Journal of Asian Finance, Economics and Business
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• 제10권2호
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• pp.183-193
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• 2023

This paper proposes and examines the economic impact of infrastructure improvement on the San-En-Nanshin region in the Chubu area of Japan. We develop a single transportation computable general equilibrium (CGE) model for each subregion within the San-En-Nanshin region. The explicit modeling of the transportation infrastructure is defined based on interregional commuting flows and business trips, considering the spatial structure of the San-En-Nanshin economy. A CGE model is integrated with an interregional transportation network model to enhance the framework's potential for understanding the infrastructure's role in regional development. To evaluate the economic impact of transportation improvement, we analyze the interrelationship between travel time savings and regional output and income. The economic impact analysis under the CGE framework reveals how transportation facilities and systems affect firm and household behavior and therefore induce changes in the production and consumption of commodities and transportation services. The proposed theoretical model was tested by using data from the 2005 IO tables of each subregion and the 2006 transport flow dataset issued by the Ministry of Land, Infrastructure, Transport, and Tourism in Japan. As a result, the paper confirms the positive effect of transportation investment on the total output and income of the studied region. Specifically, we found that while economic benefits typically appear in urban areas, rural areas can still potentially benefit from transportation improvement projects.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2002년도 학술대회지
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• pp.474-477
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• 2002

최근 정보기술은 여러 산업분야에 접목되어 보이지 않는 많은 효과를 창출하고 있다. 건설분야에서도 이러한 정보기술을 통한 정보화가 단계적으로 진행되고 있다. 유지관리 분야는 건설 제 단계 중 관심 및 중요도가 점차 고조되고 있는 분야로 시설물의 공용기간동안 체계적인 관리기법을 도입하여 생애주기비용을 최소화하며, 시설물의 기능을 향상시키려는 유지관리 주체들의 분주한 움직임이 한창이다. 본 연구는 이러한 주변환경에 부합하여 가장 효율적인 시설물 유지관리 정보시스템을 도입하기 위한 방향을 수립하는데 주요 초점을 두었다. 따라서 본 연구에서는 먼저, 대상시설물을 선정하고 시설물별 유지관리 주체들에 대한 환경 및 현황분석을 실시한 후 그 결과에 입각한 정보시스템 도입방향을 제시하였다. 기존의 유지관리 관린 정보시스템의 문제점을 보완하고, 유지관리. 주체의 실무자들이 직접 수행하는 유지관리 관련 업무를 개선할 수 있는 방안을 도출하고자 하였다.

• 한국전자통신학회논문지
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• 제2권3호
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• pp.191-198
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• 2007

u-City에서 도시기능과 관리의 효율화를 위해 기존 정보화 인프라를 혁신시키고 도시 내에 발생하는 모든 업무를 실시간으로 대처하여 주거, 행정, 문화 등 도시의 기능에 맞는 서비스를 제공하고 하기위한 센터가 필요하다. 도시의 통신망, 교통망, 시설물 등으로부터 도시정보를 수신하고 이를 통합적으로 분석하여 도시를 효과적으로 운영, 관리하고 거주민이나 관련 기관에 분석된 도시정보를 실시간으로 제공 해 주는 곳의 시설물 및 형태를 도시통합운영(관제)센터라 한다. 도시통합운영센터에서 서비스는 통합관제 플랫폼을 바탕으로 단위 서비스 간의 통합에서부터 도시를 구성하는 조직 사이의 수직적 통합과 각각의 계층에 놓인 서비스 사이의 수평적 통합으로 구성할 수 있다. 본고에서는 u-City 통합운영센터 플랫폼 및 구축방안에 대하여 알아보고 통합운영센터의 성공 방안에 대해 제언하였다.

• 한국경영과학회지
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• 제36권2호
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• pp.67-88
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• 2011

This study empirically investigated the effects of knowledge management(KM) strategic alignment on the KM activities as well as the product and process innovation of manufacturing firms. Based on the framework, which employs the usage levels of target costing systems(TCS) and information technology(IT) infrastructure, four types of KM strategies were identified and proposed：mixed, explorative, exploitative and negative strategies. In this research, these four types of KM strategies were empirically validated. According to the results of this study, it was found that when a explorative KM strategy is aligned with a low-cost strategy, KM activities are activated and the degree of a process innovation is increased. It was observed that in the case of the alignment between a differentiation strategy and a exploitative KM strategy, both KM activities and the level of a product innovation are enhanced. The results also demonstrated that for the enhancement of both a process and a product innovation through the activation of KM activities, a mixed KM strategy must be aligned with a composite business strategy, which focuses on a low-cost as well as a differentiation strategies. Accordingly, it is concluded that the KM activities and the levels of the product and process innovation can be activated or improved with the alignment of the KM strategies and business strategies.

• 한국정보과학회논문지:정보통신
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• 제37권1호
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• pp.66-71
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• 2010

본 논문에서는 차량통신망 내 V2I(Vehicle-to-Infrastructure) 환경에서 이동 중인 차량에게 끊김없는 인터넷 접속 서비스를 제공하기 위한 이동성 관리 기법을 제안한다. 기존의 PMIPv6(Proxy Mobile IPv6) 기반 이동성 관리 기법은 근거리 이동성 관리 프로토콜로 원거리 이동성을 가지는 차량통신 망에 그대로 적용하기는 어렵다. 따라서 본 논문에서는 차량통신망 환경에서 PMIPv6 프로토콜 적용을 위한 두 가지 시나리오를 도출하고 각 시나리오에서 요구되는 원거리 이동성 관리 기법을 제안한다. 또한 시뮬레이션을 통하여 제안 기법이 인터넷 서비스 단절시간을 크게 감소 시킬 수 있음을 보였다.

• 한국안전학회지
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• 제30권6호
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• pp.56-62
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• 2015

Recently, one of countermeasures against aging SOC infrastructures, performance-focused management including the serviceability, functionality, durability, and economics has been changed from the structural safety-focused evaluation has changed into The current inspection and diagnosis for the major SOC facilities in Korea has been carried out by the specific principle of details, and most of them checked by the visual inspection are focused on the repair and rehabilitation of the damaged structures, thus they are the preventive maintenance. However, the performance-focused management should be replaced for the effective and economic maintenance as wells as for the minimization of the damage. In this regard, this study the appropriacy of the current evaluation items about the concrete retaining wall, one of SOC infrastructures as the previous step forward the performance-focused management. In order to deduct the effective evaluation items in order, the entropy, analytic hierachy process (AHP), and promethee analysis were peformed and the results were compared and discussed.

• 간호행정학회지
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• 제12권3호
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• pp.373-384
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• 2006

Purpose: This is a pilot study to identify patient safety risk factors and strategies for patient safety management perceived by nurses. Methods: Data were collected and analyzed with an open questionnaire from April to May 2005, targeted on 100 nurses working in two hospitals. The issues were 'what are risk factors for patients, nurses, and other medical practitioners? How do they prevent with the aftermath of risk factors, causes of incidents?' For data analysis, types and frequency of risk factors were worked out, using the Australian Incident Monitoring System Taxonomy. Results: The types of patient safety risk factor perceived by nurses were as follows ; therapeutic devices or equipment, infrastructure and services (29.5%), nosocomial infections (16.3%), clinical processes or procedures (15.4%), behavior, human performance, violence, aggression, security and safety (12.2%), therapeutic agents (9.7%), injuries and pressure ulcers (8.7%), logistics, organization, documentation, and infrastructure technology (5.6%). Strategies for patient safety included training of prevention of infection, education about safety management for patients and medical professionals, establishment of reporting system, culture of care, pre-elimination of risk factors, cooperative system among employees, and sharing information. Conclusion: These results will be used to provide evidences for patient safety management and educational program.

• 한국IT서비스학회지
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• 제6권2호
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• pp.63-80
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• 2007

In this paper, the function factors contributing to ITA/EA functions in their organizations, are suggested. Also the reasons to the construction of IT governance system and their effects on the their organizations are discussed and the relationships are verified by empirical model. From the survey, the data of the 227 respondents were collected and regression analysis was performed for validating the research model. ITA/EA functions consist of the IT infrastructure systemization, ITA/EA business process support, IT investment efficiency factors. And the factors of IT resource and performance management, IT process management, IT service management are included to IT governance. The main analysis results described significantly are shows as follows. At first, IT resource and performance management factor is effected by the ITA/EA business process support factor and IT investment efficiency factor. In similarly, IT service management factor is also affected by the factors such as ITA/EA business process support, IT investment efficiency, and IT infrastructure systemization. In additional analysis, IT investment efficiency factor in official sectors, ITA/EA business process support factor in private sectors respectively are described as the significant factors on the IT governance.