• Journal of the Society of Naval Architects of Korea
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• v.30 no.3
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• pp.16-28
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• 1993

The object-oriented paradigm is being recognized as the most effective technique to develope the complex, large software system. In this paper, we propose the modeling methodology using object-oriented technology for the ship compartmentation design(OO _COMDEF) based on the proposed modeling methodology. Illustrative examples to show the application of the prototype system are given.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.19 no.1
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• pp.1-5
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• 2023

This paper describes a newly-developed analysis methodology in comprehensive vibration assessment program (CVAP) of reactor internals to develop a valid-prototype for the design of nuclear power plants. The new analysis methodology developed in this study will be confirmed through a scale model testing (SMT). Based on the measurements obtained from dynamic pressure transducers in the SMT, a new non-dimensional equation is developed to apply the forcing functions at reactor internals for the prototype. In addition to the new non-dimensional equation, a computational fluid dynamics(CFD) is used to develop the application of the hydraulic loads at reactor internals for the prototype.

• Korean journal of communication and information
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• v.43
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• pp.81-113
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• 2008

As past paradigm discussion was restricted to the political issues and related antagonistic ideologies, there are desires to reignite discussion from the concrete theological practices and differences in methodological variations. Interactive Study does not require mere antithesis phase but requires interactive study creation as phase itself. The purpose of this study is to analyze quality methodology cases, and to provide basic data for the application of the methodology. For this purpose, current Journalism and Mass communication discussions will be examined and characteristics of quality study and traditional methodology types will be scrutinized. In further, researches in the scientific journals of Korean Association for Communication and Information Studies will be analyzed to point out trend of quality methodology. The scope of analysis includes theological background and methodology, sampling method, data collecting method, reliability analysis. Appliance of quality research method requires more rigid and detailed methodological discussions and applications.

• Journal of Astronomy and Space Sciences
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• v.31 no.3
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• pp.265-276
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• 2014

The application of software engineering is not common in the development of astronomical observation system. While there were component-wise developments in the past, large-scale comprehensive system developments are more common in these days. In this study, current methodologies of development are reviewed to select a proper one for the development of astronomical observation system and the result of the application is presented. As the subject of this study, a project of operation software development for an astronomical observation system which runs on the ground is selected. And the output management technique based on Component Based Development which is one of the relatively recent methodologies has been applied. Since the nature of the system requires lots of arithmetic algorithms and it has great impact on the overall performance of the entire system, a prototype model is developed to verify major functions and performance. Consequently, it was possible to verify the compliance with the product requirements through the requirement tracing table and also it was possible to keep to the schedule. Besides, it was suggested that a few improvements could be possible based on the experience of the application of conventional output management technique. This study is the first application of the software development methodology in the domestic astronomical observation system area. The process and results of this study would contribute to the investigation for a more appropriate methodology in the area of similar system development.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.4
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• pp.1000-1006
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• 2014

This study focuses on the fact that a OTT service is vigorously used for smart phones, and suggests a design of method to trace the experiences of watching television contents. For this purpose, we developed logging functions and embedded them into existing OTT service application to record flow and pattern of watching context. This paper suggests a log file format which can accurately and precisely record watching actions of users per-second methodology rather than former per-minute methodology. Moreover, this study shows that the application can trace watching attitude according to occurring events by characteristics and playing modes of realtime broadcasting, VOD, advertisement contents. In addition, based on the result of the study, this paper discusses educational, operational meaning of the method such as methodological application in mobile ethnography field or survey for total screening rate.

• Journal of Climate Change Research
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• v.10 no.3
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• pp.237-242
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• 2019

Ammonia is main precursor gas of secondary particulate matter and contributes almost 78% of total ammonia emission from the agricultural sector in Korea. The current method of estimating ammonia emission from fertilizer application, which contributes 7% of the total emission, has high uncertainty and needs to be improved to better predict PM2.5 concentration. In this study, we suggest an improvement method for ammonia emission quantification from fertilizer application. The first improvement was in the emission factor of NPK fertilizer by conducting a field study to verify the currently used factor. The improved NPK emission factor of 52.2 kg NH ton-1N was confirmed by comparing with the value from the EEA (European Environment Agency) and adjusting the value for the Korean climate and soil conditions. We also improved the amount of fertilizer usage by including the sales amount to the fertilizer supply amount of the Korean Farmers Association, increasing total fertilizer usage by 39.8%. As the statistical data on fertilizer supply and sales are compiled yearly, we estimated monthly emission of ammonia by considering cultivated areas and timing of fertilization for each crop. In summary, we suggest a novel and practical method to improve estimation methodology of ammonia emission from the field of fertilizer application: 1) emission factor of NPK fertilizer was reconfirmed; 2) total amount of fertilizer use was revised considering fertilizer sales; and 3) monthly emission of ammonia was realized by considering different crop practices. A bottom-up approach to compile activity data is needed to increase the estimation accuracy of monthly emission of ammonia, which is very helpful for predicting PM2.5 concentration.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.20 no.44
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• pp.93-101
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• 1997

This paper describes the application of Genetic Algorithms(GAs) to nonlinear constrained mixed optimization problems. Genetic Algorithms are combinatorial in nature, and therefore are computationally suitable for treating discrete and integer design variables. But, several problems that conventional GAs are ill defined are application of penalty function that can be adapted to transform a constrained optimization problem into an unconstrained one and premature convergence of solution. Thus, we developed an improved GAs to solve this problems, and two examples are given to demonstrate the effectiveness of the methodology developed in this paper.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2011.05a
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• pp.97-98
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• 2011

• 시스템엔지니어링워크숍
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• s.1
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• pp.165-168
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• 2003

A robot system in most industries has a complicated structure, which includes electric and electronic components, and mechanical parts. For this reason, building a robot system also has a very complicated design and maintenance processes. Especially to predict or assess the system's maintainability and safety is important for both designer and operator before it's production or installation of the system. This paper presents an application methodology of FMECA focused on safety in design of a robot system with point of view of reliability engineering.

• Proceedings of the KIEE Conference
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• 2002.07a
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• pp.419-421
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• 2002

This paper presents a methodology for the application of Unified Modeling Language (UML) to develop the new load management system. Development of new load management system in competitive electricity market is very complex since it requires too much data of power system. For the efficient and flexible design to develop of new load management system, a UML approach in applied which is composed of a class diagram, package diagram using Rational Rose Unified Process.