• Korean Journal of Human Ecology
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• v.15 no.4
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• pp.527-539
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• 2006

The purpose of this study was to investigate the satisfaction and current conditions of playground environment in kindergartens and child care centers in Daejeon. Data were collected from 112 directors of kindergartens and child care centers through a structured questionnaire. Data were analyzed by using of frequency, percentage, mean, reliability analysis, crosstab, independent sample t-test, multiple regression. The major results showed the following. 1) 89.3% of subjects(100.0% of kindergartens and 79.7% of child care centers) have a playground. Most of playgrounds were located in the front yard. The playground's play equipments/areas were usually composed of slides, sand play areas, benches, empty playing fields, swings. Flowers/plants, shrubs were most of the natural factors of the playgrounds. 2) Slides and swimming pools of play equipments/areas were rated highest on the satisfaction level. Grass, flowers/plants, and shrubs as the natural factors of the playgrounds, were rated highest on the satisfaction level. 3) The playground was divided into 5 categories, which were made of manufactured play equipment settings, manipulative settings, rest settings, natural settings, adventure settings. Manufactured play equipment settings were rated highest on the satisfaction level. 4) Among 5 categories of the playground's play area, manufactured play equipment settings showed valid variables to playground's satisfaction level.

• Journal of Korean Neurosurgical Society
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• v.41 no.5
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• pp.295-300
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• 2007

Objective : Unilateral facet dislocation of the cervical spine occurs by flexion and rotation injuries and cannot be easily reduced by axial traction. We analyzed 14 consecutive patients with unilateral facet dislocation of the cervical spine to increase knowledge about anatomical reduction of locked facet and factors for successful reduction. Methods : Fourteen patients [10 men and 4 women] with unilateral facet dislocation of the cervical spine were retrospectively analyzed. Plain X-ray, computerized tomography scan, and magnetic resonance imaging were performed. All patients underwent manual reduction and surgery with anterior interbody fusion and plate fixation. The manual reduction was performed by neck flexion and rotation to the opposite side of dislocation, followed by rotation and flexion of the head toward the side of dislocation and extension with relaxation of traction. Mean follow-up period was 17 months. The level of spine, amount of subluxation, combined facet fracture, and time from injury to initial reduction were analyzed using the data obtained from medical records. Results : Thirteen [93%] patients were reduced successfully. Immediate reduction was achieved in 7 patients but failed in 7 patients. Seven patients underwent delayed closed reduction under general anesthesia, and successful reduction was achieved in 6 patients. Only one patient with bone chips between articular facets failed to achieve anatomical reduction. Conclusion : In order to reduce the locked facet more easily and safely, we recommend manipulative traction with anterior interbody fusion and plate fixation under general anesthesia after being aware of spinal cord injury with magnetic resonance imaging.

• International Commerce and Information Review
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• v.9 no.1
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• pp.235-257
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• 2007

In order to achieve the purpose, the present study reviews first research papers, both domestic and foreign, related to the e-SCM; it, then, sorts out the variables, economic and otherwise, that are believed to be the most important to the adaption factors of the e-SCM on Korean Hospitals. In recent days a growing concensus has been emerging among Korean Hospitals that a e-Supply Chain Management(SCM hereafter), if properly introduced and effectively managed, could secure a competitive edge in their Hospital business. Therefore, there is an urgent heed for an study that will attempt to find out the most significant factors, and most proprice Hospital environment, affecting the implementation of e-SCM in Korean Hospitals. For this study, 101 questionnaires were collected from the employee who is work at Korean Hospitals. We will make the concept by each variable clear through manipulative definition of each variable, also we will compose questions for the characteristics by each variable to be reflected. In relation to the questions required for the data analyses, 5 points Likert scale will use. The main findings are as follows: The relationship between the hospital types, hospital size and employee size and adaption degree of e-SCM was analyzed, respondents who had higher degree of hospital size and employee size showed higher level of adaption of e-SCM Regression analyses were carried out to examine the relative contribution of three set of variables on the adaption degree of e-SCM. This study explains that hospital environment factor, partner factor and IT infra factor are major factors in predicting the adaption degree of e-SCM. This study data has its limitation that collected by internet questionnaires. To present more solid data for the purpose of improving the study of e-SCM, further study which would complement the shortcomings is needed.

• Journal of The Korean Association of Information Education
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• v.14 no.4
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• pp.627-635
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• 2010

This study analysed the programming attitude and degree of achievement as the 6 types of learning styles which is suggested by Grasha and Reichmann(1974) after a performance of the programming education using the Diki-3000 which is the teaching tools of the specific manipulative activities, in order to prepare the programming education method according to the characteristics of elementary school learners. As the result of the study, the programming attitude according to the 6 types of the learning styles has indicated more positiveness in the independence type than in the dependence type, in the competition type than in the cooperation type, in the participation type than in the avoidance type. In the side of the degree of the achievement, the independent, competition, and participation types indicated more positive than the other types. Also, as the result of an structured interview with learners, which was conducted for deep understanding, there was an understanding of differences of requests to the programming learning classified by the learning styles, and suggestion of a plan for improvement of the Diki-3000 programming in the aspect of an educational environment, teaching tools, teaching contents, and teaching methods in this study.

• Communications of Mathematical Education
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• v.27 no.4
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• pp.567-580
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• 2013

As integrated essay writing is performed in university entrance examinations, teachers and students recognize the importance of integrated essay, but teachers have still difficulties of teaching methods. The purpose of this study is to derive educational implications through case of mathematics instruction for integrated essay education to pre-service mathematics teachers. The content knowledge of this class is a definition of conic section in mathematics and properties of conic section in an antenna reflector. The students have to discover them using the history of math, manipulative material, paper-folding and computer simulation. In this teaching and learning process the students can realize mathematical knowledge invented by humans through history of mathematics. The students can evaluate the validity of that as create and justify a mathematical proposition. Also, the students can explain the relation between them logically and descript cause or basis convincingly in the process of justifying. We should keep our study to instructional materials and teaching methods in integrated essay education.

• Communications of Mathematical Education
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• v.27 no.4
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• pp.581-609
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• 2013

Students' learning processes and mathematical levels should be correctly diagnosed in many different methods of assessment to help students learn mathematics. The study developed the model for the process-based assessment while using manipulatives in the middle school in order to improve problem solving, reasoning and communication which are emphasized in 2009 reformed curriculum as the areas of mathematical process. Identifying the principles of assessment, we created the assessment model for each area and carried out a preliminary study. Based on this, we revised the representative items and the observation checklist and then conducted a main study. Through the results of assessment, we found that students' thinking processes were well presented in scoring rubric for their responses on each item. It meant that the purpose of the assessment as a criterion-referenced test was achieved.

• Journal of the Korean School Mathematics Society
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• v.15 no.1
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• pp.27-51
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• 2012

This paper analyzed the pedagogical content knowledge (PCK) presented in three novice teachers' mathematics instruction. PCK was analyzed in terms of the knowledge of mathematics content, the knowledge of students' understanding, and the knowledge of teaching methods. Teacher A executed a concept-oriented instruction with manipulative materials because she had difficulties in learning mathematics during her childhood. Teacher B attempted to implement an inquiry-centered instruction in the lesson of looking for the area of a trapezoid. Teacher C focused on the real-life connection to mathematics instruction. There were substantial differences among the teachers' PCK revealed in mathematics teaching, depending on their instructional goals. The detailed analyses of three teachers' teaching in terms of their PCK will give rise to the issues and suggestions of professional development for beginning elementary school teachers in mathematics teaching.

• School Mathematics
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• v.17 no.3
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• pp.447-467
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• 2015

The purpose of this study is to examine how the learning experience understanding degree and radian as the measurement of arc affects the conceptual understanding of radian and measuring angle. For this purpose, we investigated pre-service teachers' understanding about measurement of angle using a length of arc, and then conducted a teaching experiment with two middle school students. The results of analyzing pre-service teachers' and students' response are as follows. Students' experience interpreting the concept of degree into measurement of arc had a positive effect on understanding of radian and students' learning process in which they got measurement of angle as measurement of arc enabled conceptual understanding of 'linear measuring'. Also a circle context and a strategy dividing by arc operated as effective strategies for solving various problems about an angle. Finally, we confirmed that providing direct manipulative activities as a chance to explore relationships between an angle and arc measure can help students' conceptual understanding of measuring angle.

• Journal of Korean Foot and Ankle Society
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• v.10 no.2
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• pp.242-246
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• 2006

Purpose: Frequency of sesamoid bone on hallucal interphalangeal joint has been described to be low probability in orthopaedic and anatomical literature. We have, however, experienced two cases of interphalangeal joint dislocation giving difficulty to usual manipulative reduction because of presence of sesamoid bone recently. In order to ascertain existence of sesamoid bone on interphalangeal joint of hallux in Korean adults, radiological study have been performed with feet of patients Materials and Methods: Between May 2003 and October 2006, 974 patients with 1098 radiographs of feet which were reached skeletal maturity over 18-year-old were examined. Unilateral or bilateral anteroposterior, lateral and oblique radiographs were observed by one same person and presence was recorded if there was sesamoid in films. Distance of long and short axes were measured in lateral view and cases of two sesamoids in interphalangeal joint were recorded. Statistical differences between left and right side or between men and women were evaluated by chi-square test. Results: Frequency of sesamoid was 980 cases (89.3%) and no occurrence in 118 cases (10.7%). Two sesamoids were observed in 3 cases. Average distance of long axis was 4.9 mm (range, 0.5-11.4) and average distance of short axis was 3.5 mm (range, 0.3-9.3). Unilateral sesamoid was observed in 7 patients (5.6%), bilateral absence was 7 patients (5.6%) and bilateral sesamoids in 110 patients (88.8%) out of 124 patients who took bilateral feet radiographs. Men has less frequency than women significantly (p=0.014) while there was no significant difference in frequency according to side(p>0.05). Conclusion: Sesamoid bone was seen in 980 feet (89.3%) out of 1098 normal Korean radiological studies of feet. We report 3 cases of two seamoids which was extremely rarely reported in literature. Korean frequency is similar with Japanese, but much higher than Caucasians and black Africans.

• Journal of Internet Computing and Services
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• v.7 no.5
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• pp.135-145
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• 2006

This paper presents a novel approach to real-time recognition of 3D environment and objects for intelligent robots. First. we establish the three fundamental principles that humans use for recognizing and interacting with the environment. These principles have led to the development of an integrated approach to real-time 3D recognition and modeling, as follows: 1) It starts with a rapid but approximate characterization of the geometric configuration of workspace by identifying global plane features. 2) It quickly recognizes known objects in environment and replaces them by their models in database based on 3D registration. 3) It models the geometric details on the fly adaptively to the need of the given task based on a multi-resolution octree representation. SIFT features with their 3D position data, referred to here as stereo-sis SIFT, are used extensively, together with point clouds, for fast extraction of global plane features, for fast recognition of objects, for fast registration of scenes, as well as for overcoming incomplete and noisy nature of point clouds. The experimental results show the feasibility of real-time and behavior-oriented 3D modeling of workspace for robotic manipulative tasks.