• 한국가정과교육학회지
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• 제31권4호
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• pp.115-128
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• 2019

본 연구는 중학생을 대상으로 자아존중감과 소비자사회화 영향요인이 합리적 소비행동에 어떠한 영향을 미치는 지 살펴보았다. 이에 편의표집 방법을 이용하여 서울, 경기, 충청, 전남, 광주 지역의 중학생을 대상으로 자료를 수집하여 총 412부를 분석하였다. SPSS 프로그램을 이용하여 기초통계분석, 크론바하 알파, t-검정, 단계적 회귀분석 등을 실시하였으며 분석 결과는 다음과 같다. 첫째, 합리적 소비행동은 3.18, 자아존중감은 3.54로 다소 높게 나타났으며, 소비자사회화 영향요인의 경우, 부모가 3.13으로 가장 높았으며, 학교 2.83, 대중매체 2.78, 또래집단 2.73 순으로 나타났다. 둘째, 성별에 따라 중학생의 합리적 소비행동, 소비자사회화 영향요인이 다른 지 평균비교를 한 결과, 합리적 소비행동의 경우 성별 차이가 나지 않았지만, 소비자사회화 영향요인의 경우 학교를 제외한 대중매체, 또래집단, 부모 등이 여학생이 남학생보다 높게 나왔다. 셋째, 자아존중감과 소비자사회화 영향요인이 합리적 소비행동에 어떠한 영향을 미치는 지 살펴본 결과, 용돈 액수와 대중매체, 또래집단 등은 합리적 소비행동에 부적관계를 나타냈으며 자아존중감과 부모는 합리적 소비행동에 긍정적인 영향이 있는 것으로 나타났다. 이에 중학생들이 합리적 소비행동을 하는 소비자가 되기 위해 가정과수업에서 자아존중감을 높이고 또래집단의 영향이 긍정적일 수 있도록 지도하는 것이 필요하다는 함의점을 갖는다.

• 한국구조물진단유지관리공학회 논문집
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• 제1권1호
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• pp.53-64
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• 1997

Recently, safety evaluation of structures has received great concern in this country. One major problem in safety evaluation is that the results are often quite different depending upon evaluation authority. This is mainly due to arbitrary selection of various modification factors when employing allowable stress method for safety evaluation, The purpose of the present study is, therefore, to establish a rational method to determine the modification factors, especially the stress modification factor and the deterioration modification factor based on visual examination. It is thought that the proposed method yields a rational and consistent result for safety evaluation and may efficiently be used for realistic evaluation of load capacity of bridge structures.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1143-1145
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• 2003

Some of satellites such as IKONOS don't provide the orbital elements so that we can’ utilize the physical sensor model. Therefore, Rational Function Model(RFM) which is one of mathematical models could be a feasible solution. In order to improve 3D geopositioning accuracy of IKONOS stereo imagery, Rational Polynomial Coefficients(RPCs) of the RFM need to be updated with Ground Control Points(GCPs). In this paper, a method to improve RPCs of RFM using GCPs and 3D cube is proposed. Firstly, the image coordinates of GCPs are observed. And then, using offset values and scale values of RPC provided, the image coordinates and ground coordinates of 3D cube are initially determined and updated RPCs are computed by the iterative least square method. The proposed method was implemented and analyzed in several cases: different numbers of 3D cube layers and GCPs. The experimental results showed that the proposed method improved the accuracy of RPCs in great amount.

• 한국소음진동공학회논문집
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• 제15권6호
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• pp.712-717
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• 2005

This paper presents a system identification method for multi-input, multi-output (MIMO) systems, by which a rational polynomial transfer function model is identified from experimentally determined frequency response function data. Analytically determined information is incorporated in this method to obtain a more reliable model, even in the frequency range where the excitation energy is limited. To verify the suggested method, shaking table test for an actively controlled two-story, bench-scale building employing an active mass damper is conducted. The results show that the proposed method is quite effective and robust for system identification of MIMO systems.

• 한국CDE학회논문집
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• 제3권4호
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• pp.243-250
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• 1998

In parametric surface interpolation, the choice of the parameter values to the set of scattered points makes a great deal of difference in the resulting surface. A new method is developed and tested for the parametrization in NURBS surface global interpolation. This method uses the parameter value at the maximal value of relevant rational basis function, to assign the parameter values to the arbitrary set of design data. This method gives us several important advantages in geometric modeling, the freedom of the selection of knot values, the feasible transformation of the data set to the matrix, the possibility of affinite transformation between the design data and generated surface, etc.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.119-123
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• 2010

Causes of the levee collapse are directly or indirectly associated with geotechnical engineering as well as hydraulics. In this paper, literature survey and analysis were conducted to present the alternatives in geotechnical engineering issues for rational levee design. The alternatives include the reasonable river-bed soil utilization and precautions of numerical analysis and slope stability analysis, disruption type and improvement method of drainage facility.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.155.1-155
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• 2001

The main contribution of this research is that it gives:(1) a rational criterion to select the best self-localizing method for a particular situation, and (2) an appropriate arrangement of the landmarks to minimize the error. In this paper, the authors propose a set of indices to evaluate the accuracy of the self-localizing methods, and the indices are derived from a sensitivity which is defined as the ratio of the localizing error to sensor error. And then, we compare the accuracy of self-localizing a mobile robot with landmarks based on the indices, and propose a rational way to minimize the localizing error.

• Journal of applied mathematics & informatics
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• 제8권3호
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• pp.899-907
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• 2001

Complex variable methods are used to solve the first and the second fundamental problems for infinite plate with two holes having arbitrary shapes which are conformally mapped on the domain outside of the unit circle by means of rational mapping function. Some applications are investigated and some special cases are derived.

• 호남수학학술지
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• 제41권4호
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• pp.823-835
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• 2019

A solution for Nevanlinna-Pick interpolation problem with low complexity is constructed via non-recursive method. More precisely, a stable rational function satifying the given interpolation data in the complex right half plane is found by solving a homogeneous interpolation problem related to a minial interpolation problem for the given data in the right half plane together with its mirror-image data.

• 한국공간구조학회지
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• 제1권1호
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• pp.19-24
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• 2001

A structural system developed and named 'Pantadome system' by the author has been applied to six major spatial structures of various shapes and dimensions in different corners of the world. It is a structures system (not a construction method) incorporation a temporary 'kinematic mechanism' in it for a rational construction of domical structures. Nara Convention Hall has recently been constructed successful on the principle of Pantadome System. In the present paper raison d'etre, principle and newly applied examples of Panatadome System are presented.