• 대한지구과학교육학회지
• /
• 제5권1호
• /
• pp.95-104
• /
• 2012

The purpose of this study is to examine what effects the experiment class to stress discussion of small groups in scientific experiment class of the elementary school has on scientific achievement and attitude on the science of the students comparing to the usual scientific experiment class. For that purpose, this study has divided 49 students at the 6th grade of the M elementary school in P City into test groups of 24 students and control groups of 25 students. Classes have been progressed by giving sufficient time to the test groups for discussion by each small groups after experiment while by allowing the control groups to finish the experiment with arrangement of the experiment results. Conclusions of this study include: First, the more familiar the experiment materials are and the easier the experiment procedures are to be operated by the students, the more actively the small group discussion activities have been deployed. It shows that the students need a certain level of background knowledge before experiment for vital discussing activities. Second, it is appeared that the test groups given the scientific experiment class stressing small group discussing activity have significantly high scores comparing to the control groups given the existing scientific experiment class. It shows that the small group discussing activities have effects on promoting understanding of the students on the scientific achievement for the scientific experiment class. Third, it is appeared that the test groups given the scientific experiment class stressing small group discussing activity significantly high scores on attitude about the science comparing to the control groups given the existing scientific experiment class. It is considered that the students could have opportunities to compare their own thoughts with others and to have reflective thought to change their thoughts through the small group discussing activity. As shown above, it shows that the experiment class to stress discussing activities is more effective to increase scientific achievement and attitude about the science than the scientific experiment class to get and arrange the experiment results from the existing experiment classes.

• 한국전기전자재료학회논문지
• /
• 제23권2호
• /
• pp.128-132
• /
• 2010

Photonic crystal is dielectric materials or a set of different dielectric materials with periodic structure. Line defect is obtained by leaving out a row of rods along the $\Gamma$-X direction. We showed the change of group velocity in waveguide mode and found resultant small group velocity. Characteristics of the small group velocity were described by electric field distribution. Investigating the phase shift, it is confirmed if small group velocity is positive or negative.

• Asian Journal of Business Environment
• /
• 제9권2호
• /
• pp.27-34
• /
• 2019

Purpose - From the advanced path of development and current situation, the development of enterprises plays a tremendous role in promoting national economic growth and raising the overall national strength. Therefore, this paper aims at examining the mutual effect between small & medium enterprises and economic growth. Research design, data, and methodology - In order to address the operating mutual effect between the small & medium enterprises and economic growth more clearly, this paper sets Alibaba Group and Hangzhou as an example. Meanwhile, the annual data from 2000 to 2017 will be employed, and an empirical analysis will be performed under the vector error correction model. Results - The findings display that the total revenue of Alibaba Group has a positive effect on economic growth in city of Hangzhou. However, the Granger Causality test implies that there is only a unidirectional causality between total revenue of Alibaba Group and economic growth in Hangzhou. More specifically, 1% increase in total revenue of Alibaba Group can result in 0.272% in economic growth of Hangzhou in the long run. Conclusions - In summary, for the long run, the local governments should promulgate a series of policies to assist the small & medium enterprises like Alibaba Group to improve the local economic growth as seen in the city of Hangzhou.

• 한국보육지원학회지
• /
• 제13권6호
• /
• pp.69-86
• /
• 2017

Objective: This study was conducted to investigate the effects of small-group arithmetic word problem activities with concrete materials on 5 year old children's mathematical ability and attitude. Methods: A total of 34 five-year-old children (control group 16 children, experimental group18 children) attending two kindergartens in P city participated in this study. Fifteen small-group arithmetic word problem activities with concrete materials were conducted in the classroom of the experimental group twice a week for eight weeks. Before and after the activities, all the participants individually took a basic arithmetic test, mathematical word problem solving test, and mathematical attitudes test. Results: First, we observed that the children in the experimental group achieved significantly higher scores on the mathematical ability tests, including the basic arithmetic test and mathematical word problems solving test when compared to the children in the control group. Second, we also found that children in the experimental group showed higher improvement in the mathematical attitudes test than their counterparts. Conclusion/Implications: The results of this study suggest that small-group arithmetic word problem activities with concrete materials are effective in improving children's mathematical ability and attitudes.

• Journal of Korean Neurosurgical Society
• /
• 제46권3호
• /
• pp.210-214
• /
• 2009

Objective : Several surgical procedures have been reported for the treatment of chronic subdural hematoma (CSDH). We compared the results of treatments for CSDH obtained from one burr-hole craniostomy with closed system drainage with or without irrigation, two burr-hole craniostomy with closed system drainage with irrigation, and small craniotomy with irrigation and closed-system drainage. Methods : Eighty-seven patients with CSDH underwent surgery at our institution from January 2004 to December 2008. Our patients were classified into three groups according to the operative procedure; group I, one burr-hole craniostomy with closed system drainage with or without irrigation (n=25), group II, two burr-hole craniostomy with closed system drainage with irrigation (n=32), and group III, small craniotomy with irrigation and closed-system drainage (n=30). Results : Age distribution, male and female ratio, Markwalder's grade on admission and at the time of discharge, size of hematoma before and after surgery, duration of operation, Hounsfield unit of hematoma before and after surgery, duration of hospital treatment, complication rate, and revision rate were categories that we compared between groups. Duration of operation and hospitalization were only two categories which were different. But, when comparing burr hole craniostomy group (group I and group II) with small craniotomy group (group III), duration of post-operative hospital treatment, complication and recurrence rate were statistically lower in small craniotomy group, even though operation time was longer. Conclusion : Such results indicate that small craniotomy with irrigation and closed-system drainage can be considered as one of the treatment options in patients with CSDH.

• 대한가정학회지
• /
• 제33권2호
• /
• pp.151-157
• /
• 1995

This is a study on types of foodservice system, the menu, role of the Dietitian, management of the facilities and utensil through the survey conducted at 105 enterprises located in Seoul industrial foodservices which were evenly divided into three groups ; large size of feeding group, medium size of feeding group, small size of feeding group. The sresults are below, 1. Most institutional foodservice was enterprise under direct management. 2. Selective menu was set for the large size of feeding group than small size of feeding group. At budget making, personal management and purchansing management, the dietition role was not important in the large size of feeding group than in the small size of feeding group. 3. Equipped rate of facilities and utensil were greater volume for the large size of feeding group.

• 한국간호교육학회지
• /
• 제27권2호
• /
• pp.152-162
• /
• 2021

Purpose: The purpose of this study was to examine the effect of nursing record education on the knowledge and performance of nursing record of nurses at small- and medium-sized hospitals. Methods: The participants were 62 nurses working in two small- and medium-sized hospitals. Thirty-two nurses comprised the experimental group, and 30 nurses comprised the control group. Nursing record education was provided for the experimental group. Data were analyzed by x²-test and t-test analysis using the IBM SPSS statistics 25.0 Program. Results: After education, the knowledge (t=2.43, p=.019), performance (t=2.19, p=.033) and behavior scores (t=2.42, p=.018) on nursing record were significantly higher in the experimental group than in the control group. Based on this result, nursing record education is an effective intervention to improve nurses' knowledge and performance in writing nursing records in small- and medium-sized hospitals. Conclusion: We suggest the development of a systematic and standardized education program on nursing record including its legal aspects, for nurses in small- and medium-sized hospitals. The results of this study can be used as basic data for developing a nursing record education program for small- and medium-sized hospitals.

• 한국과학교육학회지
• /
• 제36권4호
• /
• pp.519-526
• /
• 2016

이 연구는 스마트 기기를 활용한 소집단 학습이 학생들의 학업 성취도, 학습 동기, 과학 수업에 대한 태도, 스마트 기기를 활용한 소집단 학습에 대한 인식 측면에 미치는 영향에 관하여 조사하고자 하였다. 서울시에 소재한 남녀 공학 고등학교 2학년 4개 학급(133명)을 통제 집단과 처치 집단으로 무선 배치하였다. 스마트 기기를 활용한 소집단 학습 전략은 협력적 활동지 작성을 강조하였다. 수업 처치는 '산과 염기'와 '중화반응'에 대하여 6차시 동안 실시하였다. 수업 처치 후, 학업 성취도 검사, 학습 동기 검사, 과학 수업에 대한 태도 검사, 스마트 기기를 활용한 소집단 학습에 대한 인식 검사를 실시하였다. 이원 공변량 분석 결과, 학업 성취도 검사 점수에서 사전 화학 성취도와의 상호작용 효과가 유의미하게 나타났다. 스마트 기기를 활용한 소집단 학습에서 하위 수준 학생들이 상위 수준의 학생들에게 도움을 받을 기회가 많아져서 성취도가 유의미하게 향상되었을 수 있다. 학습 동기, 과학 수업에 대한 태도에서 처치 집단의 교정 평균이 통제 집단에 비하여 유의미하게 높았다. 스마트 기기를 활용한 소집단 학습에 대한 학생들의 인식도 긍정적인 것으로 나타났다. 이 연구에 대한 교육적 함의를 논의하였다.

• 한국지구과학회지
• /
• 제41권3호
• /
• pp.307-319
• /
• 2020

이 연구의 목적은 소집단 활동에서 의사소통 구조와 집단 내 지위에 따라 지구과학 영재들의 언어적 상호 작용에 차이가 있는지를 알아보기 위한 것이다. 이를 위하여 지구의 밀도를 측정하는 소집단 탐구 활동을 실시하였으며, 이 과정에서 소집단 간의 의사소통 구조가 서로 다른 공유형 집단 4개, 독점형 집단 4개 등 8개 소집단을 선정하였다. 이후 언어적 상호작용을 분석하기 위한 분석틀을 개발하여 소집단 간의 특성 차이를 비교하였으며, 그 결과는 다음과 같다. 첫째, 의사소통 구조에 관계없이 모든 소집단에서 학생들은 핑퐁(pingpong)형의 단순한 의사소통 구조를 보이고 있었다. 둘째, 소집단의 의사소통 구조 및 집단 내 지위에 관계없이 모든 소집단에서 '제재', '지시', '불만', '자신감 부족'과 같은 부정적인 상호작용이 우세하게 나타났다. 셋째, 소집단 내의 방관자의 지위에 있는 학생들은 상대방에게 지시하는 행동, 상대방의 행동을 저지하는 행동, 그리고 구성원의 태도나 능력에 대한 불만 표현 등의 언어적 상호 작용을 주로 보이고 있었다. 그러므로 교사는 소집단 활동에서 학생들이 상위 수준의 언어적 상호 작용을 구사하도록 지도해야 하고, 부정적 상호 작용이 발생하지 않도록 학생들의 의사소통에 관여해야 한다. 또한 교사는 사전에 소집단 내 방관자의 지위에 있는 학생들에 대한 성취 수준을 확인하고 이들이 소집단 활동에 보다 적극적으로 참여할 수 있도록 지도할 필요가 있다. 이 연구는 학생들의 문제 해결 능력과 의사소통 능력을 향상시키기 위한 교수학습 설계에 활용될 수 있다는 점에서 의의가 있다.

• 한국과학교육학회지
• /
• 제17권3호
• /
• pp.251-260
• /
• 1997

The instructional influences of cooperative learning strategies, which emphasize mutual interdependency of learners, group goal, and individual accountability, upon students' achievement, the attitude toward science instruction and the perception of learning environment were investigated. Before instruction, the prior knowledge test about atoms and molecules, the test of attitudes toward science instruction, and the perception questionnaire of learning environment were administered, and the grade in the previous mathematics course was obtained. These scores were used as covariates. Mid-term examination score was used as blocking variable. For instruction, three different strategies-traditional individual learning, small group learning, and cooperative learning-were used and teaching materials for the units of mole and stoichiometry were also prepared. After instruction, the researcher-made achievement test, the test of attitudes toward science instruction, and the perception questionnaire of learning environment were administered. The perception questionnaire of group activities was also administered to the two treatment groups. In the quantitative subtest, the scores of cooperative learning group and small group learning group were significantly higher than those of traditional individual learning group. However, the cooperative learning group's scores in the achievement test and the qualitative subtest were significantly higher than those of small group learning group and traditional individual learning group. The students in the cooperative learning group were found to have the most positive perception of learning environment but to have similar attitudes toward science instruction. No interaction between the treatment and the level of the previous achievement was found in any of the analyses. In the perception questionnaire of group activities, students in both small group learning group and cooperative learning group exhibited positive perception of group activities. However, students in the cooperative learning group tended to think that their activities were related with their group's success. Educational implications are discussed.