• 한국과학교육학회지
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• 제32권6호
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• pp.1072-1086
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• 2012

Science, Technology, Engineering, and Mathematics (STEM) education in the U.S. has been identified as a significant national reform in K-16 education and curriculum in order to prepare students for the global economy of the 21st century. Korea has been facing very similar challenges to improve science, technology and mathematics education, in particular, the affective aspect of learning science and mathematics. Science, Technology, Engineering, Arts, and Mathematics (STEAM) education has become a crucial issue in Korean education system. The major purpose of this exploratory study is to inform the exemplary framework of STEAM education in the U.S. for Korea and to provide descriptive and analytical accounts on STEAM teaching and learning as an innovative integrated convergence education. This study integrates the outcomes of research papers on STEM education and recent literature. It employs content analysis methodology qualitatively by analyzing and synthesizing the findings, conclusions, discussions, and recommendations of accumulated research works related to STEM/STEAM education. This study will help gain a stronger sense of the STEAM framework and will guide to develop the educational programs for Korea.

• 공학교육연구
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• 제23권1호
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• pp.26-36
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• 2020

This study aims to investigate the effect of college choice factors on withdrawal intention of first-year undergraduates in STEM majors. The data for this study were collected from a national sample of 4-year institutions that participated in Collegiate Longitudinal Study funded by the National Research Foundation of Korea during 2013-2014. The data included 1,484 students in STEM majors from 30 institutions, and this study used bivariate and multivariate analytic methods to answer the research questions. This study found that while the internal dimensions of college choice showed a negative effect on the intention to dropout, external dimensions of college choice such as college environment, financial accessibility, admission possibility had a positive effect on the intention. The findings indicate that it is necessary to pay attention to college choice for enrollment management to prevent first-year undergraduates in STEM majors from dropping out.

• Journal of Multimedia Information System
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• 제7권1호
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• pp.87-96
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• 2020

Parents' desire for daily English practice for students and the urge for a etter English education has led to a demand for a highly qualified educational curriculum. In addition to getting deep-dive insights into parents' decision-making process, the increasingly important role of STEM education method has been proved in accordance with plenty of evidenced-based many of previous research. This study was conducted to examine the five independent factors affecting parents' intentions when designating English centers for their children, respectively named: Facility, Teachers, Brands, Social factors and Tuition. Through a preliminary approach, 235 samples were analyzed. Analysis of the sample responses reveals the importance level of five independent factors affecting Parents' intention to choose English centers in descending order: Facilities, Teachers, Brands, Tuition and Social factors. Furthermore, a positive correlation was found between STEM and Intention to choose English centers, indicating that whether the center applies STEM-related curriculum in English courses or not, in fact, has a significant impact on parents' decision. In terms of attitude towards STEM, further statistical tests revealed an interesting finding, which is the fact that how STEM affects Intention of parents is directly proportional to the Attitude towards STEM. With the help of SPSS 20 and AMOS 20, the SEM analysis was processed in order to draw conclusions about factors impacting Intentions to choose English centers. Combining with Multi-group analysis, the major role of STEM education has been assessed in relation to plenty of correlations. In light of recent major and massive growth of English teaching market in Vietnam, several suggestions and recommendations in terms of sustainable developments have been displayed in this research.

• Molecules and Cells
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• 제38권7호
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• pp.643-650
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• 2015

The use of conditioned medium from mesenchymal stem cells may be a feasible approach for regeneration of bone defects through secretion of various components of mesenchymal stem cells such as cytokines, chemokines, and growth factors. Mesenchymal stem cells secrete and accumulate multiple factors in conditioned medium under specific physiological conditions. In this study, we investigated whether the conditioned medium collected under hypoxic condition could effectively influence bone regeneration through enhanced migration and adhesion of endogenous mesenchymal stem cells. Cell migration and adhesion abilities were increased through overexpression of intercellular adhesion molecule-1 in hypoxic conditioned medium treated group. Intercellular adhesion molecule-1 was upregulated by microRNA-221 in mesenchymal stem cells because microRNAs are key regulators of various biological functions via gene expression. To investigate the effects in vivo, evaluation of bone regeneration by computed tomography and histological assays revealed that osteogenesis was enhanced in the hypoxic conditioned medium group relative to the other groups. These results suggest that behavioral changes of endogenous mesenchymal stem cells through microRNA-221 targeted-intercellular adhesion molecule-1 expression under hypoxic conditions may be a potential treatment for patients with bone defects.

• 한국과학교육학회지
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• 제32권8호
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• pp.1356-1366
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• 2012

As the recent demand for human resources in science, technology, engineering, and mathematics (STEM), the development of professional STEM teacher is called worldwide. It is becoming a critical need in teacher education in order to educate student teachers, and prepare pre-service and beginning teachers for high quality of teaching competency. To promote the competency for $21^{st}$ century STEM teachers, the epistemology of technological pedagogical content knowledge (TPACK) is currently considered as the essential qualities of knowledge for highly qualified teachers. The aim of this study is explore the effect of case-based learning approach on TPACK competency of pre-service STEM teachers. In order to develop the pre-service teachers' competency regarding effective integration of technologies into teaching specific content areas, a series of innovative case study teaching in science and mathematics was presented to 43 participants of pre-service physics, chemistry, biology, mathematics, and computer teachers during a course of information and communication technology (ICT) in Education at Khon Kaen University, Thailand. After finishing a case presentation, the pre-service teachers were encouraged into a forum of critical open discussion by considering the potential impact of the case and the TPACK framework. They were investigated instructional design competency of using ICT tools into student learning process and their personal beliefs about ICT in educational process both before and after. The participant's reactions and learning was evaluated by using a self-reported questionnaire and an implementation log of content-specific learning process design, respectively. Results showed a change of their beliefs and the transformation of their TPACK competency in STEM teaching. In an effort to better serve the needs of high quality STEM teachers, the results of this study illustrated that the competency of TPACK could be particularly considered as a core attributes for future STEM teachers. By the way, case-based learning approach can play an effective part in preparing and professing the TPACK competency for STEM teachers.

• 공학교육연구
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• 제14권6호
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• pp.48-50
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• 2011

This paper deals with STEM(science, technology, engineering and mathematics) education program scheduled by ICEE (innovation center for engineering education) of Jeonju University and applied to the first-year students of high school in Jeonju. The outline of the program has been expressed, and the response of lecturers and students have been discussed. Students have experienced the various engineering topics with experiments, and had the chance to trigger to think over their majors in the future university.

• 대한지구과학교육학회지
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• 제10권1호
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• pp.1-16
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• 2017

본 연구는 북미 토착민인 인디언 학생들을 대상으로 설계된 문화 반영적 융합교육(STEM)을 이용한 문제해결 수업을 보여준다. 이 수업은 악기상을 고려한 Shelter Design 또는 피난처 설계에 관한 것이었다. 이 수업은 인디언 학생들을 대상으로 6일간 여름방학캠프 프로그램으로 적용되었으며 모든 수업은 인디언 보호구역에 있는 학교에서 실시되었다. 본 연구를 위한 데이터로는 학생들의 Shelter Design 그림, 그림에 대한 부연 설명, 그리고 학생용 학습지였다. 데이터는 질적 분석 방법에 의해 분석되었다. 본 연구의 결과 학생들은 문화 반영적(STEM) 수업 후 STEM 지식을 더 많이 습득하였으며, Shelter Design활동을 하는 동안 학생들의 문화적 지식과 일상생활 경험 등을 활용하여 문제를 해결하는 것으로 드러났다.

• 공학교육연구
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• 제27권1호
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• pp.13-31
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• 2024

In recent times, STEM graduates are confronting a decline in employment rates influenced by economic, social, cultural, and policy-related factors. Career decisions are closely linked to education, college experiences, and university settings. To comprehend the reasons behind the decline in STEM employment, it is essential to explore the relationships among these factors. This study aims to comprehensively examine differences in career motivation and career exploration behavior among 2,393 STEM undergraduates in Korea. Additionally, factors affecting career motivation and career exploration behavior were investigated. The findings indicate significant differences in perceived career motivation and career exploration behavior based on individual backgrounds and university characteristics. And analyzing the data, 37.8% of career motivation is explained by contextual supports, career barriers, individual backgrounds (grade, GPA), university characteristics (major fields, location), field to enter after graduation, and timing of job preparation. For career exploration behavior, 30.1% is explained by contextual supports, career barriers, individual backgrounds (gender, grade, GPA), university characteristics (major field, location), field to enter after graduation, and timing of job preparation. Practical implications underscore the need for tailored educational and policy support, considering individual backgrounds and university characteristics, to effectively address challenges faced by STEM graduates in the evolving employment landscape.

• 과학교육연구지
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• 제41권1호
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• pp.36-59
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• 2017

인문계고등학생의 이공계 진로동기를 진단하고 상태를 알기 위해 진로동기 형성과정에 대한 연구의 필요성이 제기되었다. 이에 본 연구는 근거이론 접근을 사용하여 인문계고등학생의 입장에서 진로동기 형성과정을 밝힘으로써 맥락에 적합한 실체이론을 개발하고자 하였다. 이공계 교과 담당교사에게 이공계 직업을 결정하고 직업목표를 설정하고 달성하려고 노력한 경험이 있는 학생을 추천해달라고 부탁하여 인문계고등학교에 재학 중인 남학생 21명, 여학생 21명 총 42명을 선정하였다. 연구결과 개방코딩 과정에서 319개의 개념과 56개의 하위범주, 19개의 범주가 도출되었다. 인문계고등학생의 이공계 진로동기 형성과정은 '이공계관련 직업을 생각하게 된 계기'라는 인과적 조건과 '학교 안팎의 이공계관련 교육과 경험'이라는 맥락적 조건의 영향을 받아 '자기이해와 이공계 직업이해'이라는 중심현상에 대해 '사회적 지지와 장애물'의 중재적 조건의 영향을 받으면서 '이공계 직업목표 달성을 위한 노력'의 전략을 사용하여 '이공계 진로에 대한 만족감'의 결과로 나타났다. 과정분석, 핵심범주, 유형분석을 통하여 진로동기 관련 요인을 추출하였으며, 연구결과를 토대로 우리 나라 상황에 맞는 진로동기이론과 학교 안팎의 진로교육의 방향에 대해서도 논의하였다. 실질적인 이공계 진로교육을 개발하고 적용하는 데 기초자료를 제공할 것으로 기대된다.

• Journal of Applied Biological Chemistry
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• 제50권4호
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• pp.187-195
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• 2007

The cord blood serves as a vehicle for the transportation of oxygen and nutrients to the fetus. In the past, the human cord blood has generally been discarded after birth. However, numerous studies have described the regenerative ability of the cord blood cells in various incurable diseases. The umbilical cord blood (UCB)-derived stem cells are obtained through non-invasive methods that are not harmful to both the mother and the fetus. Furthermore, the cord blood stem cells are more immature than the adult stem cells and expand readily in vitro. The mesenchymal stem cells (MSCs) have the capacity to differentiate in vitro into various mesodermal (bone, cartilage, tendon, muscle, and adipose), endodermal (hepatocyte), and ectodermal (neurons) tissues. This review describes the immunological properties of the human UCB-MSCs to assess their potential usefulness in the allogeneic transplantation for the regenerative medicine.