• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.687-692
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• 1991

To reduce the complexity in constructing a fuzzy logic controller of multivariable systems, three major methods are presented. One is the method of constructing single-input-single-output fuzzy logic controllers after decoupling the target system. Another is the method of using fuzzy relation matrices which indicate the relation between each input and output. The other is the method of using the hierarchically classified inputs which dominantly influence one output than other inputs. Using the last two methods, simulation results of fuzzy logic controller implemented on 160MW boiler-turbine plant model are also shown.

• 영어어문교육
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• 제16권4호
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• pp.153-184
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• 2010

On the bases of the 5 principles and the 4 criteria for designing and developing of the listening and the reading test of National English Ability Test (NEAT), this study presents Item-Types Decision-Making Model as a blueprint for designing and constructing the two tests. It sets up the criteria for validating item types, designs a modular type of test specifications, constructs an item-types bank, and specifies a complementary type of test specifications of the two tests. To gather all these threads up, it constructs Item-Types Decision-Making Model which consists of such components as the item-type pool, the validity criteria and the procedures of testing item types, the item-types bank, the modular and the complementary type test specification. Thus, it shows how the Model works in developing and constructing the two level-differentiated listening and reading tests (the 2nd and the 3rd rank) of NEAT. Finally, it discusses some implications and applications of the Model to the two level-differentiated tests (the A and the B type) of 2014 CSAT (College Scholastic Ability Test) systems, National Assessment of Educational Achievement (NAEA), and classroom testing. In conclusion, Item-Types Decision-Making Model functions as a testing template in an item development system and as a matrix in an item-types bank system.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제6권1호
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• pp.1-10
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• 2000

Spatial analysis in GIS provides an important way that helps the end-users decision-making. For such a reason, query model for analysis should be able to support the users view conceptually in constructing query statements. The traditional approaches in design of query model used to extend the functionality of model that basically designed for manipulation of attribute-operations by appending operators for spatial operations to the query statements of model. However, by the reason of spatial operation's characteristics that are different from those of attribute operations In nature, the structures of query statements in previous approaches are unnatural, inconsistent, and therefore those query models in previous approaches are not able to support the users view in retrieving analysis. In this paper, we proposed the methodology for constructing of user query and internal processing this query based on object-oriented paradigm, in the view of spatial operations by using the basic concept that spatial query is a methodology for spatial analysis. In addition, we presented a strong possibility of designing spatial query model that might actively have interaction with its user by implementing CIW(Class-Information Window) query interface corresponded with the methodology proposed in this paper.

• 영재교육연구
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• 제22권2호
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• pp.291-315
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• 2012

본 연구에서는 달의 위상 변화에 대한 과학적 모형 구성 수업에서 나타나는 영재 학생들의 모형 생성 및 발달 과정의 특징과 학생과 교사의 활동이 이 과정에 미치는 영향에 대해 알아보고자 하였다. 이를 위해 과학영재 학생을 대상으로 과학적 모형 구성 수업을 실시하였다. 수업 전체 및 모둠별 활동을 영상 촬영, 음성 녹음하였으며 선택한 모둠에 대한 면담을 실시하고 학생들의 활동지를 분석 자료로 활용하여 모둠별 개인별 학생들의 모형 생성 및 발달과정을 재구성하였으며, 학생들의 활동 양상과 교사의 역할이 여기에 미치는 영향을 도출하였다. 모둠 내에서의 토론이 모둠의 모형 생성 및 발달과정에 기여하며, 표적 모형과 초기모형의 유사성 정도에 따라 개인 모형의 발달 과정이 달라졌다. 모둠활동에 적극적으로 참여하는 학생이 많을수록 초기 모형은 다양해지고 최종 모형도 더욱 정교하게 나타났으며, 교사는 모형의 생성 및 발달과정에 큰 영향을 미치는 것으로 나타났다.

• 기술혁신학회지
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• 제4권2호
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• pp.198-210
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• 2001

The purpose of this study is to suggest information system focused on the delivery system for national internet shopping mall. It is specifically summarized as follows. First, I showed the necessary required contents for constructing information system focused on the delivery system. Next, I suggested the theoretical model of the necessary information system for practicing information system, which is based on the above contents. The result of this study is to support for constructing information delivery system required for information system of internet shopping mall. And is to do a role of guide for practicing it, which is regarded as constructing a practical business guideline.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 추계종합학술대회
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• pp.126-131
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• 2002

초고속 통신망의 구축에 있어서 가장 많은 투자를 요구하는 부분이 가입자망의 광대역화이다. 본 논문에서는 가입자망의 구성방식을 조사한 다음, 각 구성방식을 분석한 후 경제성 비교방식을 통하여 최적가입자망을 추출하고자 하였다. 최적의 초고속 가입자망 구축을 위해 노드당 비용측면과, 격자형에서 성형과 링형을 여러 환경에서 측정, 비교ㆍ분석하여 경제적인 면에서 최적의 초고속망 구축방안을 제시하였다.

• Communications for Statistical Applications and Methods
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• 제10권3호
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• pp.997-1005
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• 2003

We can use the logistic model for categorical data when the response variables are binary data. In this paper we consider the problem of constructing the confidence intervals for logistic model in I${\times}$J${\times}$2 contingency table. These constructions are simplified by applying logit transformation. This transforms the problem to consider linear form which called the logit model. After obtaining the confidence intervals for the logit model, the reverse transform is applied to obtain the confidence intervals for the logistic model.

• Journal of Electrical Engineering and Technology
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• 제10권3호
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• pp.1058-1065
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• 2015

This paper present a current predicting control method for PMSM (permanent magnet synchronous motor) to improve the tracking performance of stator current, which regards the current vector as the control target. Solving the model state equation in the static frame (α-β frame), the dynamic change of current vector will be gained as three independent terms. These change terms, which contain the prediction of current vector, are discretized and simplified by Taylor series expansion and used to get the voltage vector as the predictive control quantity. SVPWM will transform the control voltage to the switching signal of inverter, which is newly deduced for the current vector. Simulation and experiment results are given to testy and verify the performance of this method.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2005년도 추계학술대회 및 정기총회
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• pp.112-116
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• 2005

The purpose of this study is to design a deployment model structuring a product flatform and derivative products in product family concepts to be competitive in market

• Communications for Statistical Applications and Methods
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• 제8권1호
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• pp.15-27
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• 2001

One proposal is made for constructing nonparametric estimator of slope parameters in a regression model under symmetric error distributions. This estimator is based on the use of idea of Johns for estimating the center of the symmetric distribution together with the idea of regression quantiles and regression trimmed mean. This nonparametric estimator and some other L-estimators are studied by Monte Carlo.