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A Rare Cause of Subepithelial Tumor in the Gastric Fundus
Da Mi Kim,김광하,Kyungbin Kim 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2
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An Esophageal Leiomyoma with Cystic Degeneration Mimicking a Malignant Neoplasm
Gwang Ha Kim,Dong Chan Joo,Moon Won Lee,Bong Eun Lee,Kyungbin Kim Ewha Womans University School of Medicine 2023 EMJ (Ewha medical journal) Vol.46 No.4
Esophageal subepithelial tumors (SETs) are commonly encountered during screening endoscopy, and leiomyomas are the most common SET of the esophagus. Almost all patients with esophageal leiomyomas are asymptomatic; however, some present with dysphagia, depending on the size of the tumor and the extent to which it encroaches on the lumen. The typical endosonographic features of esophageal leiomyomas include well-demarcated, homogeneously hypoechoic lesions with echogenicity similar to that of the surrounding proper muscle layer, but without cystic changes. Histopathologically, esophageal leiomyomas do not undergo cystic or myxoid degeneration. This report presents a case involving a 65-year-old man with a symptomatic esophageal SET and endosonographic features indicative of malignant neoplasms, who was diagnosed with esophageal leiomyoma with cystic and myxoid degeneration following surgical resection.
유압시스템용 Elbow형 Fitting 부품의 강도평가를 위한 유한요소해석
김용조,정경빈,이선홍,최창혁 慶南大學校 附設 工業技術硏究所 2003 硏究論文集 Vol.21 No.2
엘보형 피팅은 높은 유압시스템에서 사용되고 있기 때문에 요구되는 강도를 충족되도록 제작되어야 한다. 따라서 구멍가공에서 치수정밀도는 아주 중요하나 가공오차에 따른 강도평가는 부품의 신뢰성 확보를 위해 필요하다. 본 논문에서는 유한요소해석을 수행하여 가공오차에 따른 강도를 평가하였다. An elbow-typed fitting is widely used to transmit power in the hydraulic system of industrial machinery. The hydraulic system has pressure shock or surge to transmit the system operating fluid. The hydraulic system pressure should not exceed the rated working pressure for the fitting part. Pressure shock in the hydraulic system with fittings is used as reference value to determine the strength of the fitting and to establish safety factor. The hole of fitting may machined excessively in dimension and then its strength may lower. In the present paper, finite element analysis was carried out to evaluate the strength of the fitting used in the hydraulic system and also to establish standard for the safety.
유아교사에 대한 사회적 지지가 놀이교수효능감에 미치는 영향
김경수(Kyoung-Sook Kim),박경빈(Kyungbin Park) 한국홀리스틱융합교육학회 2023 홀리스틱융합교육연구 Vol.27 No.1
이 연구는 유아교사에 대한 사회적 지지가 놀이교수효능감에 미치는 영향을 살피고, 아이디어 내기의 매개효과를 알아보는데 목적이 있다. 이를 위해 서울과 경기 및 인천시의 유아 교사 622명에 대한 설문 자료를 바탕으로 SEM 구조 모형 분석을 실시하였으며, 이에 대한 연구결과는 다음과 같다. 첫째, 유아교사에 대한 사회적 지지는 아이디어 내기와 놀이교수효능감에 긍정적인 영향을 미쳤으며 아이디어 내기 또한 놀이교수효능감에 긍정적인 영향을 미치는 것으로 나타났다. 둘째, 아이디어 내기는 유아교사에 대한 사회적 지지와 놀이교수효능감의 관계를 매개하는 것으로 나타났다. 이로써 교사 창의성은 교사가 속한 사회문화적인 영향을 받으며 긍정적인 사회적 지지를 받은 교사는 아이디어를 매개로 놀이와 학습에 효과적인 전략을 발휘한다는 사실이 밝혀졌다. 본 연구는 유아교사에 대한 사회적 지지가 유아교사 개인과 교육 현장에 미치는 사회문화적인 영향에 대한 시사점을 제시하였다. Teachers' self-efficacy, namely teachers' beliefs in their ability to effectively handle the tasks, obligations, and challenges related to their professional activity, plays a key role in influencing important outcomes in students and well-being in the working environment. The purpose of this study was to examine the effect of social support on teachers' teaching efficacy about play, and to investigate whether ideation plays a mediating role for teachers in early childhood education. For this purpose, SEM structural model analysis was conducted based on the data of 622 early childhood teachers in Seoul, Gyeonggi province and Incheon, Korea. The results of this study are as follows. First, social support for early childhood teachers had a positive effect on ideation and teachers' teaching efficacy about play. and ideation also had a positive effect on teachers' teaching efficacy about play. Second, ideation was found to mediate the relationship between social support and teaching efficacy about play for early childhood teachers. As a result, ideation was influenced by the sociocultural environment to which the teacher belongs, and that teachers who receive positive social support demonstrate effective strategies for play and learning through ideas. This study presents implications for the socio-cultural impact of social support for early childhood teachers on individual teachers and the educational field.
김경숙(Kyoung-Sook Kim),박경빈(Kyungbin Park) 한국영재학회 2020 영재교육연구 Vol.30 No.4
본 연구는 유아교사들이 현장에서 지각할 수 있도록 유아영재성 행동척도의 타당화를 목적으로 수행되었다. 이를 위하여 서울 및 경기도와 강원도의 유치원과 어린이집에 재원 중인 만 5세 602명의 유아와 담임교사 30명을 대상으로 유아는 지적능력과 창의성 측정을 위한 검사를 수행하였으며 담임교사들은 설문을 통하여 자료를 수집하였다. 수집된 자료 중 결측치를 제외한 522부의 분석결과는 다음과 같다. 첫째, 탐색적 요인분석 결과 유아영재성 행동척도는 지적특성, 창의성, 동기특성, 리더십 4요인 총 25문항으로 구성되었다. 둘째, Cronbach의 α 신뢰도 분석 결과 본 척도가 유아의 영재성을 일관성 있게 측정하고 있음을 확인하였다. 셋째, 확인적 요인분석을 통해 타당도를 확인한 결과 구조 모형 및 집중타당성과 판별 타당성 조건을 만족하여 유아영재성 행동척도가 유아의 영재성을 측정하기에 타당함을 확인하였다. 이를 통해 유아교사가 현장에서 잠재된 유아의 영재성을 발굴하고 유아영재 연구에 유용하게 사용되기를 기대한다. The purpose of this study was to validate the use of a checklist to be used by preschool teachers to record behavior characteristics and potential giftedness in preschool children. Observations, literature review, and focus group interviews with experts were conducted to construct the rating scale. The rating scale was developed to mostly assess the educational situation in preschool children who spend most of their days in school. The content validity was verified over the course of eight meetings with experts in the field. Preschool directors with graduate or postgraduate degrees and who have had careers as preschool teachers were also consulted. With this purpose in mind, the research questions are as follows: 602 five-year-old preschool children and their 30 teachers from preschools located in Seoul, Gyeonggi-do Province, and Gangwon-do Province were selected as subjects for the research. Data from 522 subjects were used for the research. In order to check the component factors, the descriptive statistics, item-total correlation, correlation between items, and the internal consistency reliability were verified. There are four different characteristics in the checklist: intellectual, creativity, motivational, and leadership. The 25 total items in the checklist are divided in this manner: 8 items for intellectual characteristics with a reliability of Cronbach’s .94, 5 items for creativity characteristics with a reliability of Cronbach’s .86, 6 items for motivational characteristics with a reliability of Cronbach’s .90, 6 items for leadership category with a reliability of Cronbach’s .89, and the overall reliability was very high at Cronbach’s .95. The results of the confirmatory factor analysis indicated a high suitability of NFI .97, TLI .97, CFI .98 and the RMSEA value of .078, showing that the structure model satisfied the conditions for convergent validity and discriminant validity. In conclusion, CAPS is a rating scale that has secured reliability and validity that can aid teachers in recognizing potential giftedness in preschool students. Furthermore, it is hoped that the scale will be widely used as the basis for further research in gifted preschool children.
Yong Bo Park,김광하,Kyungbin Kim,Tae Kyoung Ha,Guk Bin Park,Young Min Kwak 대한상부위장관ㆍ헬리코박터학회 2021 Korean Journal of Helicobacter Upper Gastrointesti Vol.21 No.1
Gastric adenocarcinoma of fundic gland type is known to originate from the gastric mucosa of the fundic gland region without intestinal metaplasia. It is difficult to detect during endoscopy and diagnose histopathologically. The development of immunohistochemistry has enabled the diagnosis of gastric adenocarcinoma of fundic gland type by gastric phenotype. A 34-year-old man visited us for treatment of a 5 cm-sized low-grade dysplasia in the gastric fundus which was incidentally found during a health check-up endoscopy. Endoscopic submucosal dissection was performed successfully, and the final histopathology showed gastric adenocarcinoma of fundic gland type. Herein, we report a rare case of gastric adenocarcinoma of fundic gland type and its endoscopic and histopathologic findings.
( Wook Yi ),( Bo Hyun Kim ),( Byung Joo Lee ),( Kyungbin Kim ) 대한갑상선학회 2021 International Journal of Thyroidology Vol.14 No.1
Branchial cleft cysts are the most common lateral neck mass, and usually have well-delineated cystic structures under ultrasonography. Ultrasonography and fine needle aspiration cytology is very helpful during preoperative diagnosis. However, these cysts may occur in unusual locations and have a sonographic morphology similar to malignant thyroid neoplasm. A 61-year-old woman presented with thyroid nodules, and ultrasonography revealed a 0.8-cm, hypoechoic, solid nodule with microcalcifications in the right lobe of thyroid in the lower portion. Postoperative histopathological examination revealed the 0.8-cm hypoechoic nodule to be a branchial cleft cyst. In addition, concurrent medullary thyroid carcinoma (MTC) and papillary thyroid carcinoma (PTC) were found. Herein, we present a rare case of branchial cleft cyst mimicking malignant thyroid neoplasm concurrent with medullary and PTC.