• 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.

• 경영과학
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• 제29권1호
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• pp.115-129
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• 2012

Service Encounter employees play a crucial role in service delivery and building relationships with customers and their attitudes and behaviors towards customers determine customers' perceived service quality and satisfaction. Past research indicates that TQM managerial practices are a critical determinant of employee's attitude and performance in the workplace. Therefore, this study investigates a model examining the relationship among TQM, employees' attitude and service performance in a hospital. Our measurement results were acceptable in terms of reliability and validity. The statistical testing shows significance on the positive relationship in the sequential order of TQM, employee's attitude and service performance. In conclusion, the theoretical and practical implications of this study were discussed, along with its limitations.

• 로봇학회논문지
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• 제9권4호
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• pp.216-224
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• 2014

This paper compares methods for attitude estimation of a UUV(Unmanned Underwater Vehicle). Attitude estimation plays a key role in underwater navigation using DVL(Doppler Velocity Log). The paper proposes attitude estimation methods using EKF(Extended Kalman Filter), UKF(Unscented Kalman Filter), and CF(Complementary Filter). It derives methods using the measurements from MEMS-AHRS(Microelectromechanical Systems-Attitude Heading Reference System) and DVL. The methods are used for navigation in a test pool and their navigation performance is compared. The results suggest that even if there is no measurement relative to some absolute landmarks, DVL-only navigation can be useful for navigation in a limited time and range.

• 한국전자거래학회지
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• 제5권1호
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• pp.159-192
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• 2000

In spite of seemingly conflicting findings, a meta-analysis of studies published between 1971 and 1998 demonstrates an unambiguous relationship between attitude and IS use. The apparent contradictions arise principally because of methodological inconsistencies in the way that attitude was measured (belief or affect) and the timing of the measurement of attitude vis-5-vis the use of the technology. We found that the affective dimension of attitude is more powerful than the cognitive dimension for explaining IS use. However, neither is particularly strong in predicting future use.

• 대한가정학회지
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• 제45권5호
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• pp.1-13
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• 2007

The purpose of this study was to explore the well-being attitude and use the expectation-disconfirmation model to assess consumer satisfaction with well-being products. The consumer expectations, performance and disconfirmation scales were composed of 7 items of 5-likert scales. Consumer satisfaction with well-being products was measured with one-item-measurement scale. The results of this study are as follows. 1. The well-being attitude consists of 4 factors. : consumption of the well-being products, pursuit of mental well-being, criticism of commercial fashion, and pursuit of harmony with natural life. 2. Well-being attitude influences the consumers' expectation, performance, and satisfaction with well-being products. 3. Consumer expectation for well-being products has no influence on satisfaction, but performance and disconfirmation have a high degree of influence on satisfaction.

• 한국조리학회지
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• 제23권7호
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• pp.50-62
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• 2017

The purpose of this study was to analyze the relationships among variables focusing on what kinds of characteristics of eco-friendly consumption value affect dietary attitude, nutrient intake behavior, health behavior and quality of life, and establish a relationship model. The subjects of this study were 238 eco-friendly consumers. SPSS 23.0 and LISREL 8.50 were adopted to examine measurement model by using analysis method. The results were as followings; First, eco-friendly consumption value has a positive impact on dietary attitude and health behavior. Second, dietary attitude affects nutrient intake behavior positively. Third, the impact of nutrient intake behavior on health behavior is significant. From the results of this investigation, it was found that eco-friendly consumption value affects dietary attitude, health behavior and that the health behavior was positively influential on quality of life. It was also verified that eco-friendly consumption value affects dietary attitude, nutrient intake behavior, and health behavior. Moreover, it was also confirmed that the higher eco-friendly consumption value is, the higher dietary attitude, trust, health behavior and quality of life will be, thereby improving the good healthy life provided.

• International Journal of Aeronautical and Space Sciences
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• 제18권3호
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• pp.565-573
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• 2017

This paper presents a multistage in-flight alignment (MIFA) method for a strapdown inertial navigation system (SDINS) suitable for moving vehicles with no initial attitude references. A SDINS mounted on a moving vehicle frequently loses attitude information for many reasons, and it makes solving navigation equations impossible because the true motion is coupled with an undefined vehicle attitude. To determine the attitude in such a situation, MIFA consists of three stages: a coarse horizontal attitude, coarse heading, and fine attitude with adaptive Kalman navigation filter (AKNF) in order. In the coarse horizontal alignment, the pitch and roll are coarsely estimated from the second order damping loop with an input of acceleration differences between the SDINS and GPS. To enhance estimation accuracy, the acceleration is smoothed by a scalar filter to reflect the true dynamics of a vehicle, and the effects of the scalar filter gains are analyzed. Then the coarse heading is determined from the GPS tracking angle and yaw increment of the SDINS. The attitude from these two stages is fed back to the initial values of the AKNF. To reduce the estimated bias errors of inertial sensors, special emphasis is given to the timing synchronization effects for the measurement of AKNF. With various real flight tests using an UH60 helicopter, it is proved that MIFA provides a dramatic position error improvement compared to the conventional gyro compass alignment.

• 한국과학교육학회지
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• 제29권5호
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• pp.501-512
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• 2009

The purpose of this research is to compare the attitudes of female students in Korea toward science with the child-rearing attitude of their parents they perceived and their sex-role identity. The participants in this study were 374 female middle- and high-school students, chosen randomly from Seoul and Gyenggi-do in South Korea. We used three different forms of questionnaires in this research: "Scale of Parents' Child-rearing Behaviors Perceived by Teenagers", "Korea Sex-role Survey", and "Attitude Toward Science Measurement." The significant results were acquired after we had analyzed the comparison of the attitude of female students toward science with their perception on their parents' child-rearing attitude, especially on their fathers. The fathers' "monitoring" and "over-expectation" factors affected the attitudes of female students toward science; on the other hand, any child-rearing attitudes of their mothers did not influence their attitudes toward science. We also analyzed the attitudes of female students about science based on their sex-role identities. In consequence, we found that meaningful differences existed in four types of gender-role identity: androgyny type, masculinity type, femininity type and undifferentiated type. In particular, the androgyny type was characterized by a higher score in attitude toward science compared with the undifferentiated type.

• 한국과학교육학회지
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• 제33권2호
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• pp.466-477
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• 2013

본 연구의 목적은 사회적 구성주의 관점에서 개발된 과학에 대한 태도 척도의 타당성 검증과 척도의 활용 가능성을 살펴보는데 있다. 설문지를 통해 833명의 중학교 2학년 학생들의 자료가 수집되었다. 먼저 요인분석을 통해 사회적 구성주의 관점을 고려한 Krogh와 Thomsen(2005)의 문화적 경계넘기 중 평판 척도(reputation in culture border crossings: R-CBC)의 타당성을 살펴보았는데 요인분석 결과 타당성이 검증되었다. 다음으로 상관관계를 통해 수렴 타당도와 변별타당도를 살펴보았는데 사회적 구성주의에 기반을 둔 R-CBC 척도와 Simpson-Troost Attitude Questionnaire(STAQ) 척도는 높은 정적상관을 보였다. 사회적 구성주의에 기반한 STAQ 척도와 개인적 구성주의에 기반한 Test of Science-Related Attitudes(TOSRA) 척도는 낮은 상관성을 보였고 R-CBC 척도는 TOSRA 척도와 상관성이 거의 없는 것으로 나타났다. 마지막으로 희망 진학 고등학교별 과학에 대한 태도를 3개 척도를 통해 비교 분석하였는데 R-CBC 척도와 STAQ 척도로 측정된 학생들의 과학에 대한 태도는 학교유형별(과학고, 인문고, 실업고) 차이를 보였다. 이는 사회적 구성주의 관점에 기반을 둔 척도가 중학생의 과학고 진학 희망을 예측할 수 있는 평가 도구임을 보여주는 것이다.

• 한국과학교육학회지
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• 제15권3호
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• pp.332-348
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• 1995

The use of attitude as a psychological concepts dates back to 1918(Thomas and Znaniecki). Assessment of attitudes has been conducted by a number of researchers since then in a wide range of contexts: religion, government, industry, community interrelations, and education; and sociology and psychology. In science, the number of research summaries and meta-analyses points to the significance of the concept of attitude toward science. However, in spite of the wide spread use of attitude assessment in science, many of the existing instruments have severe limitations. Those limitations serve as the rationale for the construction of a new instrument to assess attitudes toward science The term "attitude" and "science" are somewhat ambiguous, taking on different meanings for different people in different contexts. Very often an assessment includes several dimensions of attitude and, therefore, provides no clear idea of what was really measured. As a result there is no consistency with respect to the construct among attitude instruments. To clarify this issue, Gauld(1982), Munby(1983a, 1983b), Blosser(1984) and Haladyna and Shaughnessy(1982) offer some guiding descriptions. Attitude as it relates to science is divided into two areas-scientific attitude and attitude toward science. Scientific attitude refers to a particular approach a person assumes for solving problems, for assessing ideas and information, and for making decisions. It includes such scientific methods and predispositions as objectivity, suspended judgement, critical evaluation, and skepticism. Munby(1983a, 1983b) characterized scientific attitude as thinking as scientists do, that is, acting on evidence in a disciplined way. Attitude toward science. on the other hand, may address scientific attitudes, scientists, scientific careers, methods of teaching science, scientific interests, parts of curriculum, or the subject of science in the classroom (Blosser,1984). It may refer to belief about processes, theoretical products, technological products, or the science-technology relationship (Munby, 1983).