• Journal of the Korean earth science society
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• v.23 no.8
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• pp.666-675
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• 2002

The purpose of this study was to develop the level-defferentiated Web Based Instruction(WBI) program, to examine its effects on the science achievement self-directed learning characteristics, and the students’ perceptions on the WBI learning. For this purpose, the advanced and complementary WBI program of level-differentiated curriculum was developed to adapt to class fields and examine instruction facilitating efficiency. Designed and developed the WBI program make it possible to teach students according to the level-differentiated learning for the chapter, ‘weather and climate’ in high school science curriculum. The results of this study are as follows: First, level-differentiated WBI was effective to encourage self-concept, learning eagerness, future-oriented self-apprehension, creativity, self-assessment of the student’s self-directed teaming characteristics. There was no interaction effect of treatment and students’ learning ability at the self-directed learning characteristics. Second, the scores of science achievement of WBI group were significantly higher than those of conventional lecture group. There was interaction effect of treatment and students’ learning ability. However level-differentiated WBI has no effect on openness, initiative, responsibility of the student’s self-directed learning characteristics. There was interaction effect of treatment and students’ learning ability at the science achievement, Third, in the perception questionnaire of WBI teaming, many students showed the WBI teaming was good in terms of causing interaction between learners and web based learning materials including various images and animations. However there are several students who showed learning difficulties. For example they wonder which part is more important and what order is proper to study in hypertext environment.

• Journal of Korean Public Health Nursing
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• v.32 no.2
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• pp.181-193
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• 2018

Purpose: This paper reports the results of a descriptive study that aims to identify the factors that affect the parental efficacy of mothers with preschoolers on child sexual education. Methods: Using a structured questionnaire, data were collected from 189 mothers who had preschoolers in four kindergartens in Seoul and Gyeonggi Province from June to August, 2015. Results: The factors that had an effect on the parental efficacy of mothers with preschoolers on child sexual education were marital intimacy (${\beta}=.32$, p<.001), the degree of perceived sexual knowledge (${\beta}=.29$, p<.001), sexual education experience from one's parents (${\beta}=.21$, p=.001), and educational level (${\beta}=.14$, p=.021); the explanatory power was 28.9%. Conclusion: The factors affecting the parental efficacy of mothers with preschoolers on child sexual education were marital intimacy, subjective sexual knowledge, sexual education experience from one's parents, and the educational level. In developing a sex education program for mothers with preschoolers, it is necessary to reflect the contents that can enhance marital intimacy. In addition, it is necessary to develop a differentiated mother sex education program considering her demographic characteristics and career in sexual health.

• Journal of Family Resource Management and Policy Review
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• v.10 no.4
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• pp.65-85
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• 2006

The purposes of this study are to classify housewives based on their perception of benefits sought of preschool child education commodity and to identify the characteristics of each type. For empirical analysis, the data for this study were collected from 400 full-time housewives with preschool child living in Seoul. The statistical methods adopted fur data analysis are cluster analysis, one-way ANOVA, Duncan's multiple range test and discriminant analysis. The major findings of this study are as follows : First, four housewives' types can be categorized by the level of those 3 dimensions. The name fur the types was given as 'sticking to one's belief type', 'taking importance to early stimulation type' 'conforming to and imitating others type', and 'believing blindly in education commodity type'. Second, the result of discriminant analysis shows that 'housewives' education level and their education-related values' element was the most crucial in classifying the housewives, and 'considering child's characteristics and educational home environment' element was the next. The results of this study suggest several implications fur the education of parents with preschool child. Parents' education programs differentiated by the objects and the problems should be developed : which are suitable for each housewives' type.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.8
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• pp.3519-3524
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• 2014

Background: Esophageal squamous cell carcinoma (ESCC) is a common cancer with poor prognosis. It has been hypothesized that Oct4 positive radioresistant stem cells may be responsible for tumor recurrence. Hence, we evaluated Oct4 expression in ESCC in pre-treatment, post neo-adjuvant residual and post-surgical recurrent tumours. Materials and Methods: Endoscopic mucosal biopsies were used to study Oct4 expression and the observations were correlated with histological tumor grades, patient data and clinical background. Results: All patients presented with dysphagia with male predominance and a wide age range. Majority of the patients had intake of mixed diet, history of alcohol and tobacco intake was documented in less than half of the patients. Oct 4 expression was significantly higher in poorly differentiated (PDSCC) and basaloid (BSCC) subtypes than the other better differentiated tumor morphology. Oct4 was also expressed by adjoining esophageal mucosa showing low grade dysplasia and basal cell hyperplasia (BCH). Biopsies in PDSCC and BSCC groups were more likely to show a positive band for Oct4 by polymerase chain reaction (PCR). Dysplasia and BCH mucosa also showed Oct4 positivity by PCR. All mucosal biopsies with normal morphology were negative for Oct4. Number of tissue samples showing Oct4 positivity by PCR was higher than that by the conventional immunohistochemistry (p>0.05). Oct4 expression pattern correlated only with tumor grading, not with other parameters including the clinical background or patient data. Conclusions: Our observations highlighted a possible role of Oct4 in identifying putative cancer stem cells in ESCC pathobiology and response to treatment. The implications are either in vivo existence of Oct4 positive putative cancer stem cells in ESCC or acquisition of cancer stem cell properties by tumor cells as a response to treatment given, resulting ultimately an uncontrolled cell proliferation and treatment failure.

• Journal of Fisheries and Marine Sciences Education
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• v.20 no.1
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• pp.107-120
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• 2008

Building a competency of pre-service school teachers is one of the critical factors to decide right direction of k-12 computer & information education. In this context, we can realize of the importance of computer & information curriculum for pre-service school teachers. The purpose of this study is to explore the case of the CEL(Computer Educator License) program in Indiana University and to find the developmental direction of technology education for pre-service school teachers. To achieve the purpose of study, the methods and procedures involved the following steps: The literature reviews of technology education were performed. The analysis framework based on case study method was designed for collecting data. Data were composed of related documents, web resources, and interview resources. And collected data were analyzed. The finding and recommendation of this study were the importance of following factors: (a) technology integration in the curriculum for pre-service school teachers, (b) differentiated management with skill-based technology education, (c) leadership for using and diffusing technology in the school, and (d) connected curriculum with the national standard indicator.

• Journal of the Korea Society of Computer and Information
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• v.22 no.4
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• pp.107-113
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• 2017

The results showed that the male teachers' have higher expectations of the free learning semester compared to the female teachers'. Furthermore, the teachers who had experienced the free learning semester felt less job burdens than the teachers who did not. In addition, the subject teachers showed higher expectations of the free learning semester than the general teachers or the homeroom teachers. Therefore, in order to establish a stable system of free learning semester, it should be preceded by development of differentiated program of special education, free learning semester, strengthening of advance training, establishment of the system for participating in the whole school and the simplification of administration.

• The Mathematical Education
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• v.44 no.1 s.108
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• pp.15-40
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• 2005

This study basically investigates the meaning and properties of performance task applicable to mathematics classroom and it finds out how to run effectively performance task activities included in the present mathematics textbooks. To accomplish this, this study deals with twelves kinds of mathematics textbooks for ninth graders and is proceeded on the basis of textbook analysis and teacher interview. Considering a situation that in future mathematics textbook would be developed, according to the analytic results of this study, common understanding of performance task and qualified performance task are needed, a variety of tasks classified by differentiated level are needed. In addition, each task should be dealt with the contents related to curious and interesting real-life situations. Furthermore, fairness of checking and recording should be established and teachers' positive attitudes to applying performance tasks to math class are needed.

• The Korean Journal of Ecology
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• v.11 no.3
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• pp.137-144
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• 1988

The use of modern pollen spectra for comparative interpretation of fossil pollen sequence requires the ability to distinguish different vegetation types by their pollen spectra, which may show similarities to fossil assemblages. Tertiary marine and non-marine sediments, the Yeonil Group, of the Yeonil area, Korea, was found thirty-two palynomorphic genera. One of the characteristic features of Yeonil geo-flora is predominance of coniferous trees over shrubs, herbs, and ferns. Miocene deposits of Yeonl area, Korea, ae differentiated with five zones. According to the pollen diagram it can be inferred the climate of the Tertiary Miocene of the Yeonil area, Korea.

• Journal of Families and Better Life
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• v.19 no.6
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• pp.129-143
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• 2001

The purpose of this study is to assert the necessity of family business education and suggest the family business education program. For this purpose, curricula of entrepreneurship program, family business program in business school and of extension center of college of human ecology are compared. Two programs in the former are on the basis of management curriculum. But family business program in business school focuses the system and characteristics of family business and is short term program compared with the entrepreneurship program emphasizes the new venture and is well-developed. And family business program in college of human ecology is not differentiated from that in business school. Through these analysis, this study suggests the program which considers the importance of the family function as well as the business function in family business. So, family business program contains following three courses; family resource management, business management and entrepreneur process.

• Research in Mathematical Education
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• v.22 no.1
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• pp.1-17
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• 2019

This study aims to examine changes in teaching and learning conceptions and sense of efficacy as well as relationships between them. Data were collected from 121 Korean preservice teachers before and after a 4-week teaching practicum. The results indicated that constructivist conceptions of teaching and learning increased over the practicum period and teacher efficacy shifted as well. In addition, correlations among the constructs were strengthened over the practicum period. Interestingly, constructivist conceptions related to differentiated education were not significant, while traditional conceptions related to teacher-guided lessons were significant after the practicum. These results imply that Korean preservice teachers still place value on the traditional perspective, even though constructivism dominates the current educational policies of Korea.