• 한국신뢰성학회지:신뢰성응용연구
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• 제17권2호
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• pp.168-180
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• 2017

Purpose: In this research, we develop an effectiveness analysis simulation model using Agent Based Modeling with Communication Effects for the development of a new weapon system. Methods: To describe the future battlefield that has more complexity, we develop Agent Based Modeling to describe communication Effects. We use the communication theory (Path-Loss Model) and the real map. Results: We have compared simulation model with real map and simulation model without real map. The Blue Survival Ratio of simulation model with real map is worse than one without real map since the performance of communication gets lower. Conclusion: There are many studies about the effectiveness analysis of a weapon system. Most of previous researches assumed no communication error. In the real world, however, it's not appropriate assumption. Therefore, this study considers the communication error and shows that it is important factor in the effectiveness analysis.

• 한국물환경학회지
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• 제34권1호
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• pp.33-45
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• 2018

In this study, we discussed the application of Watershed model and Load Duration Curves (LDC) in Total Water Load Management System. The Flow Duration Curves (FDC) and the LDC were generated using the results of the daily HSPF model and analyzed on monthly or yearly flow duration variability, and non-point pollutant discharge loads by entire flow conditions. As a result of the calibration and verification of the HSPF model, both the flow and the water quality were appropriately simulated. The simulated values were used to generate the Flow Duration Curve and the Load Duration Curve, and then the excess rate by entire flow conditions was analyzed. The point and non-point pollutant discharge loads for entire flow conditions were calculated. It is possible to evaluate the variability of water quality in specific flow duration through the curves reflecting the flow duration variability and to confirm the characteristics of the pollutant source. For a more scientific Total Water Load Management System, it is necessary to switch from a current system to a system that can take into account the entire flow conditions. For this, the application of the watershed model and load duration curve is considered to be the best alternative.

• 산업경영시스템학회지
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• 제35권1호
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• pp.93-100
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• 2012

The purpose of this study is to present the green management requisites effect on corporate performance. Corporate performance consists of customer and green performance, work satisfaction and financial performance. In order to carry out this research we obtained 175 survey sheets, inspect the twelve assumptions focused on reliability, appropriateness of the model. Validation results of hypothesis are summarized as follows. First, the green management components : system, resource/energy affect significantly to the customer and green performance. Second, the green management components : system, resource/energy influence significantly to work satisfaction. Finally, the strategy has on effect to the financial performance. This paper shows that the green management requisites have an effect on the corporate performance directly and significantly.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.641-642
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• 2015

Unlike for other building processes, BIM for earthwork does not need a large variety of 3D model shapes; however, it requires a 3D model that can efficiently reflect the changing features of the ground shape and provide soil type-dependent workload calculation and information on equipment for optimal management. Objects for earthwork have not yet been defined because the current BIM system does not provide them. The BIM technology commonly applied in the manufacturing center uses real-object data obtained through 3D scanning to generate 3D parametric solid models. 3D scanning, which is used when there are no existing 3D models, has the advantage of being able to rapidly generate parametric solid models. In this study, A method to generate 3D models for earthwork operations using reverse engineering is suggested. 3D scanning is used to create a point cloud of a construction site and the point cloud data are used to generate a surface model, which was then converted into a parametric model with 3D objects for earthwork

• 한국화재소방학회논문지
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• 제16권4호
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• pp.44-48
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• 2002

기업의 안전·보건, 환경(SHE: Safety, Health and Environment)과 관련된 중대산업사고는 큰 인적·물적 손실을 가져오기 때문에 사회적 책임에 관한 문제로 확산되고 있는 추세이다. 따라서 기업은 SHE 문제에 대해 수동적·소극적인 대응에서 벗어나 자발적인 SHE관리 수행이 필요하게 되었다. 본 연구에서는 국내 기업의 SHE 관리 실태를 조사하여 연구·분석하고, 그 결과를 활용하여 기업 스스로 자율적인 SHE 관리를 수행할 수 있는 KW[Kwangwoon]_SHE[Safety, Health and Environment] 관리 모델을 제시하였다. 이 모델은 SHE 관리에 있어서 관리비 투자에 대한 업무성과를 손쉽게 평가할 수 있도록 하였다.

• 한국CDE학회논문집
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• 제17권5호
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• pp.342-352
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• 2012

As a futuristic construction model, building information model (BIM) based project management system (PMIS) and mobile BIM simulator apps have been showing visible sign. However, researches on the BIM based 3D simulator using mobile device are hard to find result from limitation of mobile device (slow speed at huge 3D file, display size, and etc.) and undefined standard of business processes. Therefore, this research aims at studying application of mobile BIM apps based on cloud computing. Total 8 BIM cloud apps were selected and analyzed in the 5 application feasibility characteristics (speed, view, inquiry, markup, and usability). This research would be essential phase to construct BIM based mobile project management system using cloud computing in the future.

• 한국군사과학기술학회지
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• 제27권2호
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• pp.203-212
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• 2024

This paper describes the establishment of defense systems test works architecture model for the efficient operation of an expanded test organization and the provision of standardized test services after the integration of proving grounds in ADD. The system engineering vee model is applied to the defense system test works to define the project management model and the unit-test management model. In order to establish the defense systems test works architecture model, the process flow of test works, artifacts by life cycle, and interrelations between regulations and test works are explained, and Integrated Test Information System for implementation of architecture model is discussed. Through the defense systems test works architecture model presented in this study, it will contribute to quickly responding to the test requirements of complex and diverse defense systems, efficiently managing projects, and providing standardized test services.

• 한국수소및신에너지학회논문집
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• 제32권4호
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• pp.236-244
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• 2021

Fuel cell systems for medium duty truck require high power demands under driving. Since high power demands results in significant heat generation, thermal management is crucial for the performance and durability of medium duty truck. Therefore, various configurations of dual stacks with cooling systems are investigated to understand appropriate thermal management conditions. The simulation model consists of a dynamic fuel cell stack model, a cooling system model equipped with a controller, and the mounted controller applies a feedback controller to control the operating temperature. Also, In order to minimize parasitic power, the comparison of the cooling systems involved in the arrangement was divided into three case. As a result, this study compares the reaction of fuel cells to the placement of the cooling system under a variety of load conditions to find the best placement method.

• Journal of Power Electronics
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• 제18권2호
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• pp.533-546
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• 2018

This study proposes a comprehensive mathematical model that includes coil-system circuit and loss models for power converters in wireless power transfer (WPT) systems. The proposed model helps in understanding the performance of WPT systems in terms of coil-to-coil efficiency, overall efficiency, and output power capacity and facilitates system performance optimization. Three methods to achieve constant output power for variable-load systems are presented based on system performance analysis. An optimal method can be selected for a specific WPT system by comparing the efficiencies of the three methods calculated with the proposed model. A two-coil 1 kW WPT system is built to verify the proposed mathematical model and constant output power control methods. Experimental results show that when the load resistance varies between 5 and $25{\Omega}$, the system output power can be maintained at 1 kW with a maximum error of 6.75% and an average error of 4%. Coil-to-coil and overall efficiencies can be maintained at above 90% and 85%, respectively, with the selected optimal control method.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.44-51
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• 2008

근래에 지식경영이라는 용어는 일종의 캠페인과 같이 다양한 분야에서 다양한 범위와 방법으로 사용되고 있다. 지식경영은 좁게는 지식을 갖춘 개인으로부터 넓게는 조직 내외부를 잇는 네트워크의 개념까지 다루기도 하며, 현재의 특정문제 해결을 위한 특정지식부터 기업이나 조직의 과거성과를 재는 잣대와 미래전략 수립을 위한 키로 활용하기도 한다. 본 연구는 지식, 지식경영, 지식경영 기업에 관한 포괄적인 연구조사를 바탕으로 건설관리 기업을 위한 지식경영모델을 제시하고, 그 중 일부에 해당하는 VE 전문가시스템을 소개하였다. 본 연구의 결과는 현재 지식경영 체제를 위해 노력을 경주중인 건설기업에게는 현재의 지식경영 정책과 방향을 되돌아보며 부족하거나 놓친 부분을 검토할 수 있도록 할 것이며, 지식경영을 도입하려고 준비중인 기업에게는 지식경영 전략을 수립하는데 있어 참고할 수 있는 하나의 대안이 될 것이다.