• Journal of Mechanical Science and Technology
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• 제15권6호
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• pp.743-751
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• 2001

A Prototype reaction wheel, named the Hankuk Aviation University (HAU) reaction wheel, has been developed for KAISTSAT satellite series. Torque and force disturbances are inherent in reaction wheels, and thus the force and torque characteristics should be examined for every newly developed reaction wheel. The torque and force disturbance noises in the prototype HAU reaction wheel are measured with a torque-measuring table developed for the present study. A new measuring procedure based on a simple principle is applied for the measurements. The frequency characteristics of the torque and force noises are analyzed by examining the power spectral density. The effect of the torque noise on the attitude stability is also examined through numerical simulations with a single-axis attitude model. The noise-induced attitude error and jitter and found to be well below the specified error limits for the KAISTSAT satellite series.

• 한국식생활문화학회지
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• 제22권5호
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• pp.590-596
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• 2007

The purpose of this study was to measuring the effects of health involvement, attitude, perceived behavioral control (PBC), behavioral intention on seafood consumption. A total of 235 questionnaires were completed. Structural equation model was used to measure the causal relationships among constructs. Results of the study demonstrated that the structural analysis result for the data also indicated excellent model fit. The direct effect of health involvement on attitude was statistically significant. The direct effects of health involvement, attitude and PBC on consumption were statistically significant. As expected, attitude, PBC and behavioral intention had significant direct effects on consumption. Moreover, health involvement had a significant indirect effect on behavioral intention through attitude and PBC. Health involvement also had a significant indirect effect on consumption through attitude, PBC and behavioral intention. Attitude and PBC had significant indirect effects on consumption through behavioral intention. In conclusion, based on structural analysis, a model was proposed of interrelations among health involvement, attitude, PBC, behavioral intention and seafood consumption. Other variables(sensory variable, habit, norm etc) may be incorporated to form models that consist of new antecedent and consequence pairs.

• 한국군사과학기술학회지
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• 제23권6호
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• pp.565-573
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• 2020

Unlike fin-stabilized projectiles, there has been some difficulty measuring the attitudes of spin-stabilized projectiles during the long-range flight due to their high spin rates. In this work, solar and geomagnetic sensors were used to measure the attitude of a spin-stabilized projectile. A method to calculate the attitude of the projectile from the signals of the sensors was introduced as well as the methods to process the signals of the sensors. To validate the methods, the attitude of a projectile was calculated with the sensor signals from the actual flight data.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.264-267
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• 2006

건설공사의 주요한 목적은 정해진 공정에 맞춰 공사가 완료되고 발주자가 공사에 대해 만족하는 것이다. 이러한 공사목적의 달성은 전적으로 시공사의 근무태도에 의존한다. 태도는 직접적으로 측정하기가 매우 어려워서, 관측 가능한 여러 지표들을 통해 추측해내야만 한다. 흔히 개인이나 기관에 의해 보여 지는 행동은 대상이나 사람, 주요 요점에 대한 태도를 대변한다. 본 논문의 목적은 진행 중인 건설공사에서 시공자의 태도를 측정하기 위한 체계(framework)를 개발하는 것이다. 본 논문에서 주요태도지표(KAI)는 현장조사를 통해 객관적이고 주관적으로 측정되었다. 제안된 KAI의 유효성은 역시 4가지 사례분석을 통해 확인되었다. 본 논문에 제시된 KAI는 시공사의 태도를 합리적으로 평가할 수 있고, 발주자와 프로젝트 매니저들이 건설공사를 효과적으로 관리할 수 있는데 도움을 줄 수 있을 것으로 판단된다. 본 논문은 차후 연구를 진행하는데 있어 일반적이고 포괄적인 기초자료로써 많은 도움을 줄 수 있으리라 사료된다.

• Journal of the Korean Data and Information Science Society
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• 제20권3호
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• pp.563-575
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• 2009

본 연구는 Priester 등 (2004)에 의해서 제시된 기억기반 선택상황에서 태도-의사결정 통합모형인 '고려상표군과 선택에 대한 태도 및 태도강도의 영향모형'을 자극기반 선택상황으로 확장하였다. 즉 태도 및 태도강도가 고려상표군과 선택변수에 대한 역할 (모형 타당성측면)과 외부자극 요소인 제품 디스플레이 위치에 따른 물리적 현저성 강도의 역할 (모형 일반화측면)을 통해 모형의 확장가능성을 검토하였다. 본 연구는 기존 연구와 같이 태도 그 자체를 측정하여 행동이나 행동의도를 파악하는 대신에 '행동에 대한 태도'를 직접 측정할 수 있는 실험조사 방법을 토대로 로지스틱 회귀분석을 통해 실증적으로 분석하였다. 본 연구 결과는 기억기반에서 태도-의사결정간의 관련성에 대한 통합모형으로 제시된 모형의 특성들을 자극기반 상황에서 이론적 배경과 실증분석을 통해 모형타당성을 확인하여 모형의 일반화 가능성을 보여주었다.

• Current Research on Agriculture and Life Sciences
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• 제19권
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• pp.9-16
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• 2001

This study addressed the effects of environmental attitude improved using forest environmental interpretation program. While previous research has focused developing interpretation program itself, this study analyzed the effects that environmental interpretation has improved toward pro-environmental attitude. This program was designed self-guiding interpretive techniques at Mt. Palgongsan Provincial Park. Environmental attitude was measured using 12 statements which was based on fifth-graders attitude scale in U.S.A. Data were collected from 84 elementary school participants in this program. Results showed that attitude scores of participants increased toward pro-environmental attitude. Especially, three statements (interest, safe and benefits of forest) are statistically significant differences between pre- and post survey. Results can be used by outdoor educators to evaluate and plan their environmental interpretation programs and methods.

• 한국정보시스템학회지:정보시스템연구
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• 제18권1호
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• pp.25-46
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• 2009

According to adaptive structuration theory, faithfulness of appropriation(FOA), and consensus on appropriation(COA) are variables for measuring appropriation in use of IT. FOA is the level of interpreting and using the intentions of the IT designers objectively and COA is the level of agreement on ways of using IT among or with user group independently of designers' intention. In traditional theories of IT adoption, computer self-efficacy(CSE), self evaluation on abilities of using computer, has been considered as one of the important individual differences. which would influence on beliefs of using IT. Therefore, considering the relationship among CSE, FOA, COA and attitude, we can hypothesize that CSE would play a moderation varaible among appropriation related variables relationships, FOA-attitude and COA-attitude. The objective of this study is an analysis of CSE's moderation effects in causality relationship among appropriation measuring variables. For this purpose, we propose a research model where there are four hypotheses for moderation effects of CSE on the relationships between appropriation variables. We test these hypotheses by sampling ERP and groupware users. In result, our proposed hypotheses except moderation effect of COA-usefulness are accepted. Main contribution of this study is to identify the relationship between CSE and AST. This study implies that very careful consideration of users' CSE is necessary in order to perform managerial activities based on FOA and COA in IT management department.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.56.5-56
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• 2001

In the three axis control of satellite by using reaction wheel and gyro, a reaction wheel produces the control torque by the wheel speed or momentum, and a gyro carries out measuring of the attitude angle and the attitude angular velocity In this study, dynamic modelling of the Low Earth Orbit (LEO) is consisted of the one from the rotational motion of the satellite with the basic rigid body and a flexible body model, and the gyro in addition to the reaction wheel model. The results obtained by the robust controller are compared with those of the PI (Proportional and Integration) controller which is commonly used for the stabilizing satellite.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.451-456
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• 2004

Attitude is very difficult to be measured directly; therefore it must be inferred frrom assumed relationship with observable indicators. In some aspects, behavior represents the attitude of a person about a thing, person or issue. In this paper a tool has been devised to measure the attitude of contractor in ongoing project. However, the tool has been tested in a completed technical school construction project in Nepal. The results show that the tool can reasonably measure the attitude of the contractors and can be helpful for the owners to control the projects.

• 복식문화연구
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• 제19권4호
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• pp.766-779
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• 2011

The purpose of this study is to find the levels of self-monitoring, self-consciousness and cosmetic attitude of female university students and to analyze the relationship between the levels of self-monitoring, self-consciousness and cosmetic attitude in an effort to strengthen external human beauty. The respondents were 264 university women attending a university Chung-Cheong Province in Korea. In this study, a questionnaire method was used. The questionnaire consisted of SMS(self-monitoring scale), the(self-consciousness scale), and a measurement of the cosmetic attitude. Earlier studies were used to create the measuring instruments with some adjustments for the purpose of this research. Factorial analysis, correlation analysis, multiple regression analysis were carried out with SPSS 18.0. The cosmetic attitude consisted of four factors, and those factors were related to self-monitoring and self-consciousness. The Four factors were happiness with change, manners to others, the instrument of change, and conformity. It was found that the cosmetic attitude reflected the personal internal mental states; hence, the cosmetic attitude was used as method to express the internal mind. Determining the correlations between self-monitoring, self-consciousness and the cosmetic attitude was useful in understanding the personal peculiarity of the cosmetic attitude. Moreover, in the cosmetic industry, it is likely meaningful to investigate the capability whether the variables of self-monitoring and self-consciousness can be applied in an effort to understand consumers' internal character.