• The Journal of Advanced Prosthodontics
• /
• v.14 no.3
• /
• pp.150-161
• /
• 2022

PURPOSE. The purpose of the study was to assess the influence of build orientations and density of support structures on the trueness of the 3D printed removable partial denture (RPD) frameworks. MATERIALS AND METHODS. A maxillary Kennedy class III and mandibular class I casts were 3D scanned and used to design and produce two 3D virtual models of RPD frameworks. Using digital light processing (DLP) 3D printing, 47 RPD frameworks were fabricated at 3 different build orientations (100, 135 and 150-degree angles) and 2 support structure densities. All frameworks were scanned and 3D compared to the original virtual RPD models by metrology software to check 3D deviations quantitatively and qualitatively. The accuracy data were statistically analyzed using one-way ANOVA for build orientation comparison and independent sample t-test for structure density comparison at (α = .05). Points study analysis targeting RPD components and representative color maps were also studied. RESULTS. The build orientation of 135-degree angle of the maxillary frameworks showed the lowest deviation at the clasp arms of tooth 26 of the 135-degree angle group. The mandibular frameworks with 150-degree angle build orientation showed the least deviation at the rest on tooth 44 and the arm of the I-bar clasp of tooth 45. No significant difference was seen between different support structure densities. CONCLUSION. Build orientation had an influence on the accuracy of the frameworks, especially at a 135-degree angle of maxillary design and 150-degree of mandibular design. The difference in the support's density structure revealed no considerable effect on the accuracy.

• Journal of Korean Elementary Science Education
• /
• v.29 no.3
• /
• pp.307-315
• /
• 2010

In this study, we investigated the effects of cooperative learning by the levels of students' performance goal orientation in science classes on 6th graders' science achievement and science learning motivation. Two classes (47 students) from an elementary school were respectively assigned to a control group and a treatment group. A performance goal orientation test and a science learning motivation test were administered as pretests. The intervention of cooperative learning lasted for 24 class periods. A researcher-made achievement test and the science learning motivation test were administered after the instructions. ANCOVA results indicated that the score of the treatment group was significantly higher than that of the control group in the achievement test. However, no interaction was found between the cooperative learning treatment and the levels of students' performance goal orientation. There were significant aptitude-treatment interactions in science learning motivation.

• Journal of the Korean Home Economics Association
• /
• v.38 no.1
• /
• pp.75-87
• /
• 2000

The aims of this study are to establish a mode of housing life style that meet the demands of families living in big cities, and the contribute to the development of a better housing life style pattern by considering metropolitan residents' choice of housing and basic concepts of their behavioral patterns. The results of this study were as follows: 1. Value orientation of family life was divided into value orientation of family and value orientation of housing. Value orientation of family was constituted of four factors such as 'harmony', 'leisure and hobbies', 'individual development and its support' , 'education' . Value orientation of housing is constituted of three factors such as 'physical characteristics of house' , '\`environmental condition', 'socio-economic conditions of housing'. The comprehensive life values were constituted of six factors such as 'the importance of communal family', 'the importance of housing decoration and housing life benefits', 'the importance of security and holding environment' , 'the importance of familial harmony', 'the importance of privacy', 'the importance of convenience and natural environment'. Based on three factors, were found to be fine types of value orientation of family life which were 'pursue healthy of family', 'comfort of family', 'clean environment', 'convenient environment', and 'harmonious relationship among family members'. Variables influencing the value orientation of family life were property and price of housing. 2. Consumption propensity when buying house, furniture and durables were constituted of four factors which were propensity to 'beauty', 'fashion', 'tradition and symbol', and 'pragmatic use'. Based on these factors, there were found to be four types of consumption propensity when buying house, furniture and durables which were 'fashion', 'tradition and symbol', 'beauty', and 'pragmatic use'. Variables influencing spending habits were found to be objective social class (SES), types of residence, wife's educational background, and price of housing. 3. Propensity to using space were constituted of three factors which were 'convenience', 'politeness and social grace', and 'housekeeping'. Based on these factors, there were found to be three types of propensity to using space which were 'individuality', 'convenience', and 'politeness and housekeeping'. Variables influencing propensity to use of space were found to be objective social class (SES), wife's educational background, types of homeownership and price of housing 4. According to this study, there were found to be six patterns of housing life style: 1) family that seeks formalist life, 2) family that seeks harmonious life, 3) family that seeks active healthy life, 4) family that combine various factors, 5) family that seeks convenience, 6) family that stresses environment.

• Animal Systematics, Evolution and Diversity
• /
• v.32 no.3
• /
• pp.197-206
• /
• 2016

Two cold-water coral taxa, Octocorallia in the class Anthozoa and Stylasteridae in the class Hydrozoa, were identified. Deep-water samples were collected in fishing nets at depths ranging between 20 and 200 m along the coasts of the East Sea in Korea from 1976 to 1993. The two species found in this study represent new records for Korea: Paragorgia arborea (Linnaeus, 1758) in the class Anthozoa, and Stylaster profundiporus Broch, 1936 in the class Hydrozoa. Two families, Paragorgiidae and Stylasteridae, are also newly recorded in Korea. Furthermore, the species name of another cold-water gorgonian species, Primnoa pacifica (Kinoshita, 1907) in the family Primnoidae, is amended in this report. The two newly recorded cold-water coral species from Korea are described in detail based on their morphological characteristics. Paragorgia arborea is characterized by its growth form, medulla and cortex, zooid dimorphism, canal system, and spicule composition. Stylaster profundiporus is distinguished by its external skeletal characteristics, such as the coordination of dactylopores and gastropores, presence or absence of gastrostyles and dactylostyles, cyclosystem orientation, ampullar position, gastropore tube shape, and coenosteal texture.

• The Journal of the Korea Contents Association
• /
• v.21 no.2
• /
• pp.395-405
• /
• 2021

This study explored the structural relationship between achievement goal orientation, learning motivation, and level of interest on the level of flow in distance PBL classes. A structural model was constructed through analysis of previous studies. Data for the verification of the structural model were collected from 59 students in the teaching courses. The study took PBL lessons remotely. After the PBL class was ended, flow, achievement goal orientation, learning motivation, and level of interest were measured. The collected data were analyzed using the structural equation model analysis method. As a result, the structural model proposed in this study was verified to be valid. It was verified that the level of interest mediated the influence of achievement goal orientation and learning motivation to influence commitment. Next, it was verified that the path through which the level of interest mediates the effect of achievement goal orientation has the greatest influence. Therefore, it is possible to suggest that the level of flow can be adjusted if the level of interest is adjusted in consideration of the achievement goal orientation of learners when operating distance PBL classes.

• Journal of Korean Home Economics Education Association
• /
• v.12 no.3
• /
• pp.129-143
• /
• 2000

The Survey of Teaching Practice and the Factors of Satisfaction on Teaching Practice in Home economics Education The purpose of this study was to investigate teaching practice and factors on satisfaction of educational practice in home economics education of middle and high school, to provide information for improving educational practice. The subjects were 365 college students who had the educational practice in 1999. A questionnaire was used. The results were as follows: 1. Seventy on point eight percent of the subjects choose their teaching-practice school by themselves, however 25.2% of them was recommended by college. Twenty five point six percent of the subjects satisfied the orientation of the college, but 32.8% of them didn’t. Thirty four point four percent of the subjects indicated the form of practice documents was good, whereas 27.9% of them it needed more improvement. 2. Fifty four point eight percent of the subjects used their own research room. The orientation of teaching-practice school was good(36.4%) but 20.0% of the subjects dissatisfied. Eighty nine percent of the subjects managed the class as vice supervisory teachers, 46^ of them had example instruction, the number of subjects practised at middle school and public school were more than high school and private school respectively. 3. The score of educational expertise of teachers was 3.66 and the teacher educators’was 3.85 The score of educational expertise of the teacher educators who were in college of education(3.87) was higher than in general teacher course(3.77) at p$\leq$0.05 4. The score of educational practice satisfaction in the all subjects was 3.67. The factors to effect the satisfaction of the educational practice were the kind of research room, the orientation plan of the practice school and the management of the class, The score of the educational practice satisfaction was correlated with the score of educational expertise of teachers and teacher educators. and the agrresive attitude to the teaching practice of the teacher educators.

• Journal of Korean Elementary Science Education
• /
• v.40 no.2
• /
• pp.210-226
• /
• 2021

The purpose of this study was to understand what orientations elementary school teachers have related to their science classes, what realities they encounter in real classes, how they overcome their frustrations and failures they experience. We employed a narrative inquiry method and analyzed the experiences of two early career elementary school teachers (Miss Park and Mr. Choi). Miss Park wanted to conduct students-driven inquiry classes, in which students become active investigators, but in reality, she faced herself who conducted teacher-driven classes. Mr. Choi wanted to conduct science classes based on constructivism, but in reality, he encountered himself as a knowledge giver rather than scaffolder. However, rather than giving up their orientations, the two teachers tried to keep them in their own way. It was expected that by understanding what strategies beginner teachers take when their theoretical orientation and ideals are not well implemented in actual educational reality, we could find a clue that will lead to a more successful transition from pre-service teacher to teacher.

• Journal of the Korea Institute of Building Construction
• /
• v.13 no.1
• /
• pp.10-19
• /
• 2013

Companies want universities to produce graduates with creativity and problem-solving skills, and for this reason universities have extended engineering design education, including in the field of architectural engineering. This paper investigates an engineering design class in the Department of Architectural Engineering, J University. The class was taught in 2010 and 2011using an Action Learning (AL) teaching-learning strategy. The students responded that the level of participation and satisfaction was high in the Action Learning classes, and role allocation or responsibility and communication of the project teams were very effective. But it was also found that as Action Learning is such a new method for students of engineering design, an orientation session that describes what to do and what to prepare should be given before the class starts.

• The Journal of Asian Finance, Economics and Business
• /
• v.8 no.8
• /
• pp.217-227
• /
• 2021

This paper aims to investigate factors affecting museum visits of young people in Vietnam by sending questionnaires to 2106 young people aged between 14-30 in Vietnam. With the support of SPSS version 2016 and STATA version 22, this paper illustrates that the empirical findings are appropriate with previous literature reviews. Research hypotheses such as learning purposes, intrinsic motivation, extrinsic motivation, and museum architecture are significantly and positively correlated with museum visits measured through customer visiting intention, customer satisfaction, and customer loyalty. Furthermore, males have a stronger interest in visiting the museum but a low re-visit intention than females. People with a higher level of education and higher income are also more likely to visit the museum than those with a lower level of education and income. Finally, the research results suggest that the family class and the orientation of parents play an important role in encouraging children to increase museum visiting intention; however, children of high-class families are less likely to have a high intention, satisfaction, and loyalty toward museum visitation than children of lower-class families.

• The Journal of the Korea Contents Association
• /
• v.18 no.2
• /
• pp.269-279
• /
• 2018

The purpose of this research is to investigate how an elementary English class is presented in terms of communicative properties using COLT and TALOS because previous studies mainly used COLT. A lack of TALOS has shown on the previous studies. Also, this study takes a close look into whether the English class is communicative or not communicative since previous studies criticized in that elementary English classes are not communicative. For the purposes of this research, COLT part B and TALOS low-inference were used to analyze one elementary English class which had won the grand prize at English class contest. The result of this study revealed that the class is communicative in terms of high quantity and quality of students utterances, high ratio of students' discourse initiation, students' unpredictable information giving utterances and extension of utterances. Findings from this study revealed the good elementary English class characteristics of this class: students' participation, focus on affective atmosphere, students-directed activities, and unconscious internalization of target expressions through repetition.