• 제어로봇시스템학회:학술대회논문집
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• 1987.10b
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• pp.513-518
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• 1987

In this paper the error equations of the SDINS aligned by the gyrocompass are derived considering that the alignment errors are correlated to the sensor errors. Also the navigation errors due to the correlated errors are simulated by this error equations. The simulations are performed by the covariance analysis method, assumed all the sensor errors are random constants. The simulation results show that while the INS maintains the alignment attitude the cancellation takes place between the correlated errors, but once the INS changes attitude this cancellation effect is perturbed.

• Journal of Environmental Science International
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• v.20 no.3
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• pp.351-360
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• 2011

The purpose of this study is to find out effects of environmental expression programs using environmental resources of the areas in which students live so that it verified the effects by developing environmental expression programs using local environmental resources and then teaching the programs to local students. The findings are as follows. First, environmental experience programs using local environmental resources help elementary school students Environmental Literacy. Second, the programs have a positive effect on changes in the students' Pro-environmental Attitude.

• Hwankyungkyoyuk
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• v.10 no.2
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• pp.213-228
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• 1997

This study was planned to test the educational effects of self-guiding environmental interpretation panel. For purpose of the study, self-guiding interpretation panel was set up along the trail of green shower area of Kwang-Reung Arboretum in 1995,and the environmental behavior related variables such as attitude, locus of control, personal responsibility, general knowledge, and intention to act were closen based on Hines and his colleagues' Responsible Environmental Behavior model(1987). The pre-test/post-test non-random control group design was introduced fo test the effects of panel. ANCOVA was used to test the differences between experimental and control group because of the need to consider the effects of other variable such as socio-economic variables on the changes of environmental behavior related variables. Among 5 environmental behavior related variables, the changes of attitude and knowledge were significantly different between experimental group and control group, and the experimental group's direction of change was more favorable for environment. It is concluded that the educational effects of self-guiding interpretation panel were partially accepted. Several recommendations and restrictions of the study are presented.

• The Journal of Information Systems
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• v.19 no.3
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• pp.237-261
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• 2010

IT service is increasing becoming a critical resource firms have to utilize effectively and efficiently. As the importance of IT service increases, the knowledge sharing between IT service people and users becomes more and more important. In this study, the IT service quality is posited as a critical independent construct that influences knowledge sharing attitude of users which in turn change the knowledge sharing intention. Service satisfaction is placed as a mediator between the quality and attitude to compare direct and indirect effect in the model. Results show that (1) IT service quality influences the knowledge sharing attitude of users directly, and indirectly through service satisfaction, (2) at the same time, however, the direct path from quality to attitude is found to be stronger than the indirect path through satisfaction, and (3) interestingly, satisfaction seems to have no direct effect on intention, but only through the attitude change as can be inferred from the theory of reasoned action. Outcome of this study implies the importance of IT service quality in improving the knowledge sharing activities between users and developers, and interestingly the aim of quality would not be targeted on satisfaction but on attitudinal changes.

• Journal of the Korean Society of Earth Science Education
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• v.8 no.2
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• pp.206-217
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• 2015

The purpose on this study is to identify how effectively experiential learning involving eco-activities make changes in environmental literacy and scientific attitude of elementary students by categorizing those activities into 5 fields of "marine", "rivers", "ecosystem", "climate" and "recycling" and applying those scheme specifically to 5th graders in a elementary school. The conclusion of this study is following. Firstly, after scientific attitude are applied to subjects, a significant disparity was found between experiment group and control group throughout all parts of environmental literacy. In the cognitive category, each specialist concerning his or her own topic was invited to educate the students, and subsequently a positive impact was detected in the category of environmental issue knowledge. In behavioral category, having eco-activities made a significant disparity in all sub-categories of environmental function, active participation, saving activities, recycling activities and so forth. Secondly, experiential learning involving eco-activities made a significant disparity between the two groups in terms of Scientific Attitude, showing effectiveness in all sub-categories except curiosity.

• Journal of the Korea Safety Management & Science
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• v.19 no.4
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• pp.301-307
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• 2017

The planing hull is characterized by a large change in the posture according to the speed, and the shape of the propeller varies, so that the hull resistance varies greatly depending on the propeller used. Especially, the Savitsky system, which is widely used for estimating the resistance of planing hull, does not consider the characteristics of these propeller and ship bottom spray rails. In this paper, in order to investigate the difference in resistance characteristics between the propeller and the bottom of the propeller of 6m and 12m class propeller using propeller such as outboard or stern drive, A comparative test was conducted on resistance and attitude posture changes in the Circulating Water Channel of Institute of Medium & Small Shipbuilding. As a result of comparison test, it was confirmed that there is a clear difference in the attitude change due to the presence of the bottom floor spray rail and the change in resistance characteristics due to the installation of the propeller. However, attitude change with the propeller was found to be insignificant.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.36 no.12
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• pp.1216-1221
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• 2008

A low earth orbit satellite with a fixed solar array always has a sun-pointing attitude during daylight, and changes into a nadir-pointing attitude for a imaging mission. Since external heating sources to the satellite panels are Earth　irradiation and Albedo during most of daylight in a sun-pointing attitude, the thermal environment condition is relatively stable. However, direct sunlight which is the greatest environmental heating has an affect on the satellite panels during a mission period (10% of one orbit) in a nadir-pointing attitude. In satellite thermal design, thermal effects of a nadir-pointing mission attitude due to this thermal environment change need to be evaluated although the duration of a nadir-pointing attitude is short. Therefore, a nadir-pointing attitude during a mission is incorporated into thermal model and by the thermal analysis result, thermal effects on the satellite are investigated.

• Proceedings of the KSCN Conference
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• 1998.11a
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• pp.114-114
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• 1998

• Journal of the Korean Society for Library and Information Science
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• v.43 no.1
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• pp.161-187
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• 2009

Today's society demands that Individuals need to acquire skills to select information they need, read critically that have been gathered and use them for their advantage. The ability to actively respond to information can be cultivated through reading which facilitates creative, critical thinking, and self-initiated learning. This research presents results from a study in which subject-centered approach to reading guidance was applied to elicit positive changes in reading attitudes and to contribute to the elevation of self-concept among adolescents. Using survey questionnaire, we compared the changes in reading attitude before and after treatment. The results indicate that subject-centered reading instruction brought positive changes in reading attitude among middle school students, contributed positively to the formation of self-concept and the improved student initiated learning.

• Journal of the Korean Society of Food Culture
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• v.34 no.1
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• pp.14-22
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• 2019

This study examined the effects of 'Dietary education for children's health UP' (DECHUP) on the changes in knowledge, attitudes, and practice (KAP) of nutrition and food safety in $5^{th}$ grade elementary school students in Incheon. The DECHUP program was conducted from May to October 2018 and consisted of education and activities focusing on the children's levels of understanding. Data were collected before, immediately after, and 6 weeks after DECHUP using the same method. All data were analyzed using SPSS ver 20.0. The level of knowledge and attitudes of the subjects to nutrition and food safety was significantly higher after than before DECHUP, but the attitude of boys did not show any significant difference after 6 weeks. Although there were no significant differences in the behavior for nutrition in the practice of the subjects, there were significant positive changes in the behavior of food safety. The higher the satisfaction of DECHUP, the more positive the change in knowledge, and the more positive the attitude and practice behaviors. Therefore, DECHUP has positive effects on the KAP of the subjects, and it will be helpful for elementary school students to form desirable eating habits if it can be carried out periodically and continuously.