• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.543-547
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• 2002

In this paper, we introduce a more improved camera modeling method for linear pushbroom images than the method proposed by Orun and Natarajan(ON). ON model shows an accuracy of within 1 pixel if more than 10 ground control points(GCPs) are provided. In general, there is high correlation between platform position and attitude parameters but ON model ignores attitude variation in order to overcome such correlation. We propose a new method that obtains an optimal solution set of parameters without ignoring the attitude variation. We first assume that attitude parameters are constant and estimate platform position's. Then we estimate platform attitude parameters using the values of estimated position parameters. As a result, we can set up an accurate camera model for a linear pushbroom satellite scene. In particular, we can apply the camera model to its surrounding scenes because our model provide sufficient information on satellite's position and attitude not only for a single scene but also for a whole imaging segment. We tested on two images: one with a pixel size 6.6m$\times$6.6m acquired from EOC(Electro Optical Camera), and the other with a pixel size 10m$\times$l0m acquired from SPOT. Our camera model procedures were applied to the images and gave satisfying results. We had obtained the root mean square errors of 0.5 pixel and 0.3 pixel with 25 GCPs and 23 GCPs, respectively.

• International Journal of Aeronautical and Space Sciences
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• 제8권2호
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• pp.67-75
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• 2007

An attitude control problem for a tethered spacecraft is studied. The tethered spacecraft is viewed as a multi-body spacecraft consisting of a base body, a massless tether that connects the base body and an end mass, and tether actuator dynamics. Moments about the pitch and roll axes of the base spacecraft arise by control of the point of attachment of the tether to the base spacecraft. The control objective is to stabilize the attitude of the base spacecraft while keeping the perturbations of the tether small. Analysis shows that linear equations of motion for the tethered spacecraft are not completely controllable. We study two different control design approaches: (1) we decouple the attitude dynamics from the tether dynamics and we design a linear feedback to achieve stabilization of the attitude dynamics, and (2) we decouple the controllable modes from the uncontrollable mode using Kalman decomposition and we design a linear feedback to achieve stabilization of the controllable modes. Simulation results show that, although it is difficult to control the tether, the tether motion can be maintained within an acceptable range while stabilizing the attitude dynamics of the base spacecraft.

• 한국치위생학회지
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• 제14권5호
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• pp.703-713
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• 2014

Objectives : The purpose of this study is to investigate the knowledge and attitude toward cardiopulmonary resuscitation(CPR) in some dental hygienists. Methods : A self-reported questionnaire was filled out by 207 dental hygienists in Gwangju from February to March, 2014. The questionnaire consisted of knowledge and attitude toward CPR dental hygienists. The data were analyzed using IBM SPSS 19.0 program for chi-square test, independent t-test, one-way ANOVA and multiple regression analysis. Results : Dental hygienists having basic life support(BLS) provider accounted for 16.9%. CPR knowledge was 8.40 and attitude was 3.59 points. There were positive correlations between CPR knowledge and attitude including education, performance, and confidence(r=.231, r=.207, r=.377). In the regression analysis, attitude toward CPR confidence were positively associated with BLS provider certificate within two years. Conclusions : Dental hygienists had low level of knowledge and confidence toward CPR. It is important to educate BLS provider course to the dental hygienists.

• 보건교육건강증진학회지
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• 제26권1호
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• pp.39-50
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• 2009

Objectives: The purpose of this study suggests effective elementary school based smoking prevention education for preventing students from smoking, by examining and analysing a variety factors related to their knowledge and attitude on smoking. Pre-post quasi-experimental study was designed to analyze the effects of knowledge and attitude toward smoking of elementary school students. Methods: Data were collected by questionnaires from 135 students of the control group and 359 students of the experimental group in Korea, from June 4 to July 20, 2007. The reliabilities of instruments were adequate (Cronbach's alpha=.73-.79). Data were analyzed by t-test, $\chi2$-test and ANCOVA using SAS V8 program. Results: The results were as follows; 1. The ANCOVA models of the knowledge and attitude toward smoking were very significant to explain about education effects. 2. After the smoking prevention education, the smoking knowledge and attitude of the experimental group was significantly improved, whereas those of control group didn't. Smoking prevention education for elementary school students increased their level of smoking knowledge and desirable attitude. Conclusion: Therefore, it is necessary to give and develop a more effective program which is suitable to the subjects's needs and low grades before start smoking. Furthermore more various teaching methods such as VTR, lectures, role play and long term education program are need to be effective to change attitude and to improve the smoking knowledge.

• 한국간호교육학회지
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• 제10권2호
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• pp.220-228
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• 2004

The purpose of this study was to identify the student nurses's attitude toward computerization and the factors related to their attitude. The subjects were 636 student nurses studying at one nursing college in Seoul, Korea. Questionnaires were used developed by Hwang & Park(2001) based on the Stronge & Brodt' s study(1985). Cronbach's alpha of the instrument in this study was. 81. The data were collected from September through November in 2003. Major results of this study were as follows. 97% Student nurses have personal computer, the mean hours of using computer were 2.51 and the mean hours of connecting internet were 2.19. The Attitude toward computerization were positive, the mean score was 3.43. Those who were higher grade, and thought that computer would be needed in nursing education, and perceived benefits of computerization, had more favorable attitude toward computerization. The result showed that positive attitude of student nurses would be needed in effective computerization of the health care system, therefore nursing education system and curriculum will be changed on student nurses's need.

• 한국치위생학회지
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• 제15권5호
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• pp.873-880
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• 2015

Objectives: The aim of the study was to investigate the attitude and influencing factors toward basic life support in the dental hygienists. Methods: A self-reported questionnaire was completed by 218 dental hygienists in Gwangju. The questionnaire consisted of the general characteristics of the subjects and attitude toward basic life support (BLS). The attitude included cognitive belief, behavioral components, and emotional components. The data were analyzed by independent t-test, one-way ANOVA and multiple regression analysis by using IBM SPSS 21.0 program. Results: The cognitive belief, behavioral component, and emotional components of attitude toward BLS had higher scores in those who were between 34-34 years old and had more than 10 years of career. Most of them worked in dental clinic and did not earn the BLS certificate. There were positive correlations between the cognitive belief, behavioral components, and emotional components toward BLS. By the regression analysis, cognitive belief toward BLS was positively associated with educational experience within a year, behavioral components, and emotional components. The behavioral components were associated with working between 5-10 years in dental clinic and the emotional components. Conclusions: The attitude toward BLS in the dental hygienists was low in cognitive belief, behavioral components, and emotional components. Therefore, BLS education must be expanded to the dental hygienists.

• 대한간호학회지
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• 제30권2호
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• pp.498-513
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• 2000

The purpose of this study is to construct the nursing-policy and nursing-theory of Korean style by understanding the type of recognition and attitude immanent in Korean people through of Korean people to the Shamanism(巫敎). And this paper is using Q methodology by operant definition. Because individual recognition and attitude to Shammanism is very subjective and individualistic and many-sided. Q statements in this paper are ultimately 38 statements divided into 5 regions, which are abstracted from 285 Q samples. 38 persons in all are objects of P-population. The results of analyses on the characters of each type are as follows. The men who belong to type I is positive to the Shamanism in recognition and attitude at the same time. The men who belong to type II are negative the analysis of the recognition and attitude to Shamanism in recognition, but positive to Shamanism in practical attitude. The men who belong to type III are evidently negative to Shamanism in recognition and attitude at the same time. The men who belong to type IV are positive to Shamanism, but negative or reservative to it in attitude. In conclusion, we could affirm that shamanic care-act which modern medicine discard as only superstition is very deeply rooted in the Korean people'need. In short, Korean people is already and always related to Shamnism, whether positively or negatively. I dare to think this paper might contribute the other disciplines of sciences as basic data.

• 대한간호학회지
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• 제37권7호
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• pp.1202-1211
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• 2007

Purpose: This study was done to investigate cybersex addiction, gender egalitarianism, sexual attitude and the allowance of sexual violence in adolescents, and to identify the relationships among these variables. Method: The participants were 690 students from two middle schools and three high schools in Seoul. Data was collected through self-report questionnaires which included a cybersex addiction index, a Korean gender egalitarianism scale for adolescents, a sexual attitude scale and a scale for the allowance of sexual violence. The data was analyzed using the SPSS program. Results: Of the adolescents, 93.3% reported not being addicted to cybersex, 5.7% reported being mildly addicted, 0.4% moderately addicted, and 0.6% severely addicted. Cybersex addiction, gender egalitarianism, sexual attitude and the allowance of sexual violence in adolescents were different according to general characteristics. Cybersex addiction of adolescents correlated with gender egalitarianism, sexual attitude and the allowance of sexual violence. Conclusion: Gender egalitarianism, sexual attitude and the allowance of sexual violence in adolescents were influenced by cybersex addiction. Therefore, nursing interventions for prevention and management of cybersex addiction need to be developed and provided to adolescents. In addition, varied programs for teaching sexuality to adolescents should be developed and provided.

• 한국의류학회지
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• 제39권2호
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• pp.257-270
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• 2015

This study investigates the effect of perceived value on attitude and purchase intention of upcycling fashion goods. The study also examines the effect of perceived value on attitudes according to fashion innovativeness. The qualitative data analysis results from NVivo 10.0 showed that consumers paid attention to the creative design value, environmental value, scarcity value of upcycling fashion goods. Next, 201 effective questionnaires were analyzed using SPSS 22.0 and AMOS 20.0. The results are as follows. First, there were 5 factor solutions for the perceived value of up-cycling fashion goods: environmental value, creative design value, functional value, emotional value, and self-expression value. Second, environmental value, functional value, and self-expression value positively affected attitude; however, creative design value and emotional value did not affect attitude. Third, attitude positively influenced purchase intention of upcycling fashion goods. Fourth, there was a significant difference in the magnitude of the effect of self-expression value on attitude according to fashion innovativeness. The results of this study provide useful information for marketers or managers interested in upcycling fashion goods.

• 대한지구과학교육학회지
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• 제5권3호
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• pp.225-234
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• 2012

The Purpose of this study is searching the effect of the flow level increasing by using flow learning on scientific achievement and attitude toward science in 4rd grade elementary school student's scientific learning factors, and the better way to approach scientific institude than now in used. Participants included 52 elementary school students. For this study, two classes were divided into experimental class and control class. The control class takes a regular instructions and the experimental class takes a flow learning instructions. Two chapter were selected, 'Plant's World' and 'Fossil and Rock', for this study. Students were treated for 18 hours. The results were as follows: First, flow learning related program about plant's world, fossil and rock is increasing 4rd grade elementary school students' flow level in science class. Second, students are not increasing their scientific achievement according to increasing their flow level. Third, students are not increasing their attitude toward science according to increasing their flow level. But in attitude toward scientific inquiry, adoption of attitude toward science and preference of job related science subordinated, students are increasing subordinate factors of attitude toward science.