• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.459-462
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• 2008

건설산업의 지속적 발전과 상생을 위해 일반건설업체와 전문건설업체의 파트너링 형성이 절실히 요구되고 있다. 일반건설업체에서는 협력사와의 상생협력을 위해 다양한 지원활동을 펼치고 있으며, 특히 재무지원이 가장 효과적인 지원으로 주목받고 있다. 본 연구의 목적은 전문건설업체와의 상생협력을 위한 일반건설업체의 재무지원 현황 및 특징을 분석하기 위해 사용될 수 있는 분석 기본틀(analysis framework)을 개발하는데 있다.

• 대한지구과학교육학회지
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• 제11권1호
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• pp.63-77
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• 2018

본 연구는 한국 STEAM 프로그램에 공학 설계(Engineering Design)가 얼마나 반영되었는지 분석한 것이다. Gusey et al. (2014)의 STEM 프로그램 분석도구를 바탕으로 41개의 STEAM 프로그램을 분석하는 예비 연구를 진행하였으며 그 결과를 바탕으로 한국 STEAM 프로그램의 특성에 맞게 유형을 분류할 수 있는 핵심 요소와 분석 도구를 제안하였다. 한국 STEAM 프로그램의 분석 요소는 Gusey et al. (2014)가 제안한 요소와 더불어 과학 탐구과정과 과학 내용과 관련된 5개의 요소들이 추가되었다. 본 연구에서 제안된 요소와 분석틀을 사용하여 76개의 프로그램을 분석한 결과 한국STEAM 프로그램은 공학설계 요소의 반영 비율이 낮고(28.5%) 과학 내용 중심적이며(62.3%) 완전한 공학 설계 과정이 반영된 프로그램은 5.8%에 불과했다.

• Earthquakes and Structures
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• 제23권1호
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• pp.35-57
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• 2022

This article presents a computationally efficient framework for multi-objective seismic design optimization of steel moment-resisting frame (MRF) structures based on the nonlinear dynamic analysis procedure. This framework employs the uniform damage distribution philosophy to minimize the weight (initial cost) of the structure at different levels of damage. The preliminary framework was recently proposed by the authors based on the single excitation and the nonlinear static (pushover) analysis procedure, in which the effects of record-to-record variability as well as higher-order vibration modes were neglected. The present study investigates the reliability of the previous framework by extending the proposed algorithm using the nonlinear dynamic design procedure (optimization under multiple ground motions). Three benchmark structures, including 4-, 8-, and 12-story steel MRFs, representing the behavior of low-, mid-, and high-rise buildings, are utilized to evaluate the proposed framework. The total weight of the structure and the maximum inter-story drift ratio (IDRmax) resulting from the average response of the structure to a set of seven ground motion records are considered as two conflicting objectives for the optimization problem and are simultaneously minimized. The results of this study indicate that the optimization under several ground motions leads to almost similar outcomes in terms of optimization objectives to those are obtained from optimization under pushover analysis. However, investigation of optimal designs under a suite of 22 earthquake records reveals that the damage distribution in buildings designed by the nonlinear dynamic-based procedure is closer to the uniform distribution (desired target during the optimization process) compared to those designed according to the pushover procedure.

• 대한임베디드공학회논문지
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• 제13권6호
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• pp.305-312
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• 2018

Software has been used to develop many functions of the modern weapon systems which has a high mission criticality. Weapon system software must consider multi-threaded processing to satisfy growing performance requirement. However, developing multi-threaded programs are difficult because of concurrency faults, such as unintended data races. Especially, it is important to prepare analysis for debugging the data races, because the weapon system software may cause personal injury. In this paper, we present an efficient framework of analysis, called ConDeWS, which is designed to determine the scope of dynamic analysis through using the result of static analysis and fault analysis. As a result of applying the implemented framework to the target software, we have detected unintended data races that were not detected in the static analysis.

• 한국IT서비스학회지
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• 제12권1호
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• pp.143-161
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• 2013

Convergence is now the trend of knowledge information society. Information technology and knowledge transfer are main sources of convergence. There are many articles which studied outcomes of convergence while there are few articles that try to study the process of convergence. The purpose of this study is to investigate how convergence is dynamically formalized. For the analysis, we used Institutional Analysis and Development(IAD) framework from the point of convergence. IAD framework could synthetically study the origin and the process of convergence. We investigated the case of sillicon valley whether or not dynamics of ICT convergence could be explicable by IAD framework. The results shows that ICT technology and knowledge could be the enabler for the formation of convergence. ICT technology accelerates convergence and knowledge convergence from information converge different technologies and industries. This article provides a theoretical foundation for future research to analyze dynamics of ICT convergence by the IAD framework. For the future work, it is recommended that a study is to be empirically analyzed the dynamics of ICT convergence.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권6호
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• pp.2591-2611
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• 2020

Botnets have become one of the most significant threats to Internet-connected smartphones. A botnet is a combination of infected devices communicating through a command server under the control of botmaster for malicious purposes. Nowadays, the number and variety of botnets attacks have increased drastically, especially on the Android platform. Severe network disruptions through massive coordinated attacks result in large financial and ethical losses. The increase in the number of botnet attacks brings the challenges for detection of harmful software. This study proposes a smart framework for mobile botnet detection using static analysis. This technique combines permissions, activities, broadcast receivers, background services, API and uses the machine-learning algorithm to detect mobile botnets applications. The prototype was implemented and used to validate the performance, accuracy, and scalability of the proposed framework by evaluating 3000 android applications. The obtained results show the proposed framework obtained 98.20% accuracy with a low 0.1140 false-positive rate.

• International Journal of Naval Architecture and Ocean Engineering
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• 제10권6호
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• pp.661-669
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• 2018

Engineering system problems consist of multi-objective optimisation and the performance analysis is generally time consuming. To optimise the system concerning its performance, many researchers perform the optimisation using an approximation model. The Response Surface Method (RSM) is usually used to predict the system performance in many research fields, but it shows prediction errors for highly nonlinear problems. To create an appropriate metamodel for marine systems, Lee (2015) compares the prediction accuracy of the approximation model, and multi-objective optimal design framework is proposed based on a confirmed approximation model. The proposed framework is composed of three parts: definition of geometry, generation of approximation model, and optimisation. The major objective of this paper is to confirm the applicability/usability of the proposed optimal design framework and evaluate the prediction accuracy based on sensitivity analysis. We have evaluated the proposed framework applicability in derrick structure optimisation considering its structural performance.

• Human Ecology Research
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• 제62권2호
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• pp.197-216
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• 2024

The dual aims of this study were i) to explore the effectiveness of an assessment method that can measure the competencies learned through high school home economics and ii) develop a competency-based assessment framework for high school home economics, including components of competency-based assessment, item development system, and other elements. The study involved the following stages: literature analysis, draft development, concretization, validity verification, and final version. Based on the results of the literature analysis and expert deliberation, a competency-based assessment framework for high school home economics was developed which comprised three dimensions: 'core idea' × 'process' × 'context and value'. Based on this, an item analysis table was presented to systematize various activities for the competency-based assessment of high school home economics, following which a holistic rubric suitable for competency assessment tasks was proposed by referring to the newly developed 'process' dimension assessment criteria. This study is significant in that it is the first to propose a competency-based assessment framework that systematically presents a variety of assessment activities. These will facilitate the development of assessment standards and tools that teachers can refer to or trust in the changing school environment due to the introduction of the standard-based assessment system based on a high school credit system, and the guarantee of a minimum achievement level.

• 정보화연구
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• 제11권1호
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• pp.25-32
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• 2014

웹 마이닝은 사용자의 웹 이용 분석을 위해 웹에서 발생한 데이터를 대상으로 유용한 패턴을 찾아내는 기법이다. 하지만 기존의 웹 마이닝은 웹 로그의 연속적인 특성을 충분히 반영하여 분석하지 못하였다. 이를 보완하기 위하여 본 연구에서는 프로세스 마이닝을 활용하여 프로세스 모델에 의한 순차적인 관계에 따른 웹 접속 로그를 분석하는 프레임워크를 제시한다. 프로세스 모델에 기반한 웹 로그 분석은 웹 페이지들을 이동한 사용자들의 행위를 이해하고 문제점과 개선방안을 도출하는 데 유용하게 사용될 수 있다. 본 연구에서는 제안한 방법론을 이용하여 대학정보시스템의 웹 로그를 분석하여 적용 가능성과 그 분석 결과를 제시하였다.

• 융합보안논문지
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• 제10권4호
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• pp.13-19
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• 2010

시대의 흐름에 따라 기업의 지속적인 비지니스 연계 보증을 위하여 IT의 비중이 높아지면서, IT가 조직의 하나의 부분으로서 작용하는 것이 아닌 전사적인 차원에서 정보화 사회의 경쟁 화두로서 인식되어가고 있다. 정보보안 거버넌스는 정보의 무결성, 서비스 연속성, 정보자산의 보호라는 3가지 목적으로 시작된다. 이는 기업 거버넌스에 필수적이며 투명한 부분이 되어야 하고, IT프레임워크와 연계되어야 한다. 기존의 정보보안 거버넌스 프레임워크는 그 범위가 넓어 소규모 기업 거버넌스와 이해관계를 가지지 못한 문제점이 있다. 따라서 본 논문은 단순화된 정보보안 거버넌스 프레임워크를 제안하여, 문제점을 해결하고, 제안하는 프레임워크의 안전성 분석과 효율성 분석을 통하여 제안 방법의 효율성에 관하여 알아보았다.