• 한국정보과학회논문지:소프트웨어및응용
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• 제33권5호
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• pp.460-469
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• 2006

이기종의 분산시스템들을 통합하여 기업 환경에 적용할 수 있도록 여러 다양한 연구들과 시도들이 이루어지고 있다. 그러나 웹서비스가 갖는 특별한 구조 즉, 서비스 제공자, 서비스 요청자, 그리고 서비스 저장소의 세 역할을 갖기 때문에, 웹서비스 기술에 기존의 시스템 개발 방법론을 직접 적용하기는 어렵다. M4WSD(Method for Wes Services Development)는 웹서비스 개발 프로세스 모델로서, 요구사항 분석 단계에서 유도되는 유스케이스 모델을 기반으로 하는 웹 서비스 개발 절차 및 가이드라인을 포함하고 있다. 본 논문에서는 각 서비스를 구현하기 위하여 주요 구현 전략을 어떻게 결정하는지에 초점을 맞춘다. 본 논문에서 제시하는 평가 가이드라인은 구현 전략을 결정하는 문제를 구조화할 수 있도록 한다.

• 공학교육연구
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• 제18권2호
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• pp.77-88
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• 2015

Recently, there has been an increasing interest in 'Flipped Learning,' an IT-based learner-centered teaching-learning method corresponding to meet the paradigm of the future education. For smooth Flipped Learning, there are three steps in total: a pre-class should precede; then, in the structure of classes in the classroom, in-class learning among peer learners should be done; and lastly, the operation of a post-class should be done. For successful Flipped Learning, class elements in each step should be designed with a time difference, interconnected so as to achieve a single educational objective. However, it was found that there was a limitation in that the teaching-learning model of the preceding Flipped Learning consisted of the order of analysis, design, development, implementation and evaluation as general procedures, so it would not sufficiently consider the situations of Flipped Learning only. On this background, this thesis proposes a differentiated Flipped Learning model for mastery learning in a subject of an institute of technology as a model of systematic instructional design and presents a case of a class applied to an actual subject of computer engineering.

• 보건행정학회지
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• 제14권1호
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• pp.89-120
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• 2004

The purpose of this empirical study is to test hypotheses in order to identify the cost drivers that drive indirect costs in general hospitals in Korea. In various cases' studies, it has been suggested that overhead costs are driven by volume and complexity variables, how they are structurally related and how the cost impacts of these variables can be A unique feature of the research is the treatment of complexity as an endogenous variable. It is hypothesized that level of hospital complexity in terms of the number of services provided(i.e., “breath" complexity) and the intensity of individual estimated in practice. overhead services(ie., “depth" complexity) are simultaneous determined with the level of costs needed to support the complexity. Data used in this study were obtained from the Database of Korean Health Industry Development Institute, Health Insurance Review Agency and analyzed using simultaneous equation model, path model. The results found those volume and complexity variables are all statistically signi-ficance drivers of general hospital overhead costs. This study has documented that the level of service complexity is a significant determinant of hospital overhead costs, caution should be exercised in interpreting this as supportive of the cost accounting procedures associated with ABC. with ABC.

• International Journal of Aeronautical and Space Sciences
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• 제17권1호
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• pp.45-53
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• 2016

This work is mainly done by too many manual operations in the aircraft structure design process resulting in heavy workload, low efficiency and quality, non-standardized processes and procedures. A top-down associated design method employing the template parametric technology is proposed here in order to improve the quality of design and efficiency of aircraft wing structure at the preliminary design stage. The appropriate parametric tool is chosen and the rapid design system of knowledge-driven aircraft wing structure is developed. First, a skeleton model of aircraft wing structure is rapidly built up through the template encapsulated design knowledge. Associated design is then introduced to realize the association between the typical structural part and skeleton model. Finally, the related elements are referenced from skeleton model, and a typical structural part reflecting an automatic response for design changes of the upstream skeleton model is quickly constructed within the template. The rapid design system proposed and developed in this paper is able to formalize the design standardization of aircraft wing structure and thus the rapid generation of different aircraft wing structure programs and achieve the structural design knowledge reuse as well.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 추계학술대회논문집
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• pp.474-478
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• 2006

It is becoming more significant to develop a rotary voice coil motor(VCM) type's actuator for small form factor (SFF) optical disk drive(ODD), as portables are getting more and more popularized nowadays. The actuator which is applicable to small-sized ODD with a compact flash(CF) II card size was developed and fabricated. The experimental results showed that the finite element(FE) model is different from the fabricated model. And so flexible mode frequencies did not satisfy specifications of small-sized ODD, and tuning. Tuning procedures were required to improve dynamic characteristics of the fabricated actuator through finite difference method(FDM). At first, design variables were extracted through parameter study and the tuned FE model was improved by design of experiment(DOE). Consequently, It was confirmed that the improved model was applicable to SFF ODD.

• 대한조선학회 특별논문집
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• 대한조선학회 2008년도 특별논문집
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• pp.106-111
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• 2008

A hull form is 181K DWT Bulk Carrier, of which new design and hull form have been developed using CFD tools and model tests. The basic concept design of hull form has been carried out with considering the factors, which are a lot of influence of the wave and viscosity resistance. The considered factors of particular are LCB, DLWL shape, tern and stem profile, Cp-curve shape, etc. Numerical calculations are carried out in the initial design stage and experimental model tests are also carried out in towing tank of MOERI. The variation of the significantly effective characteristics is carried out to achieve optimized hull form. The results from numerical calculations and model test as well as the design procedures to obtain an optimized hull form resent in this paper.

• 한국가정과교육학회지
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• 제9권2호
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• pp.101-114
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• 1997

The objectives of the unit ‘Family Relations’in high school Home Economics Education is to help the students cultivating proper values and self-esteem, maintaining harmonious personal relations not only by understanding human relationships in family, but also by acquiring role play, and is to wisely cope with many problems occurring in social life, which are indispensable for those living in modern society. But at present it is hard for the students to gain those abilities mentioned above, for the present unit ‘Family Relations’lays special emphasis only on memorizing specific knowledge about the understanding of a family. To improve the present educational situation, this study develops a new teaching-learning method based on the role play model concerning the ‘Family Relation’area of high school Home Economics Education curriculum. This study is theoretically based on the literature and previous studies on present problems of our various family relations, and solving its problems, and suggests lesson model of role play and its effect. This study was performed as following procedures： the ‘Family Relation’unit of the present high school Home Economics Education curriculum was analyzed, and surveyed students to discover the conflicts and their solutions the high school students are now experiencing in their family relations. Accordingly, a new lesson model of the ‘Family Relation’area, applying role play was developed. Based on the developed lesson plan, two-hour classes were experimented and positive evaluation was given by students.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.234-235
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• 2015

In South Korea, small photovoltaic equipment is increasingly adopted in more detached houses on the constant basis. With this broader use of small photovoltaic equipment, its systematic maintenance becomes all the more necessary. However, photovoltaic facility maintenance has been concentrated solely on large-scale solar energy generation plants in the country while hardly covering smaller facilities. In this research, the JEM rule and extant maintenance company services were analyzed to develop a proper maintenance model for small photovoltaic equipment. The maintenance service procedures designed herein are as follows: A small photovoltaic equipment user chooses a maintenance company and signs a contract. Once a contract is made, the Korea Energy Management Corporation provides a certain kind of incentive to the company. The company provides maintenance service to the user and receives a service fee. If such a maintenance service model is in place, small photovoltaic equipment efficiency is expected to increase and users could receive systematic maintenance services. Also the new creation of small photovoltaic equipment maintenance service would form a new market to generate more jobs for the society.

• Structural Engineering and Mechanics
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• 제72권1호
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• pp.31-41
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• 2019

Structural integrity assessment of piping components is of paramount important for remaining life prediction, residual strength evaluation and for in-service inspection planning. For accurate prediction of these, a reliable fracture parameter is essential. One of the fracture parameters is stress intensity factor (SIF), which is generally preferred for high strength materials, can be evaluated by using linear elastic fracture mechanics principles. To employ available analytical and numerical procedures for fracture analysis of piping components, it takes considerable amount of time and effort. In view of this, an alternative approach to analytical and finite element analysis, a model based on relevance vector machine (RVM) is developed to predict SIF of part through crack of a piping component under fatigue loading. RVM is based on probabilistic approach and regression and it is established based on Bayesian formulation of a linear model with an appropriate prior that results in a sparse representation. Model for SIF prediction is developed by using MATLAB software wherein 70% of the data has been used for the development of RVM model and rest of the data is used for validation. The predicted SIF is found to be in good agreement with the corresponding analytical solution, and can be used for damage tolerant analysis of structural components.

• 대한조선학회논문집
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• 제31권3호
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• pp.1-11
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• 1994

CSDP(Computerized Ship Design and Production) 연구사업에서는 선체설계업무를 지원하는 "선체CAD시스템"개발을 수행하였다. 본 시스템 개발을 위해서 시스템 요구분석을 수행하여 현재의 선체설계에 관련된 설계업무의 내용과 흐름을 분석하였다. 이러한 요구분석 결과를 토대로 선체CAD 시스템을 이용할 때 설계단계마다 요구되는 설계 정보를 생성하기 위한 전산화된 선체 모델을 정의하였다. 선체모델의 표현과 구현을 하기 위해서는, 형상정보 뿐만 아닌 설계개념까지도 표현할 수 있는 제품모델의 구현을 위해서 객체지향기법을 적용하므로써 실제의 선체설계업무를 전산화된 선체모델에 반영할 수 있는 모델의 자료구조와 컴퓨터 내에서의 처리기법을 제시하였다.