• Journal of the Korean association of regional geographers
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• v.13 no.5
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• pp.595-607
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• 2007

The purpose of this paper is to investigate if any effects of GI cooperative learning method, which is compared to the effects of traditional competitive teaching-learning method on the students' academic attitude in middle school social studies classes. Conclusively, it is asserted to be a much more effective teaching-learning method. Some statistical evidences were gathered by questionnaire method just after the experimental classes being applied for a semester to the 241 first year middle school students in a small city. Using the t-test procedure, it is conformed that GI cooperative learning method can draw much more positive changes in the academic attitude of the students. In short, such positive changes in student's academic learning attitude can be related with the increase of self-trust in learning processes, the change in the conception of the subject, and the spontaneous interaction and verbal communication among the group members.

• Journal of Gifted/Talented Education
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• v.26 no.1
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• pp.77-99
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• 2016

The purpose of this study was to examine the effect of GI-STEAM program on leadership, creative personality, and learning flow of elementary Gifted Students. GI-STEAM program was the convergence model of Group Investigation that belongs to Co-learning and STEAM framework of learning criterion. The participants were 16 gifted students in a Korean elementary school located in Gyeong-gi province. The experimental design was one group pretest-posttest design. After a pretest on leadership, creative personality, and learning flow was conducted, classes were carried out as GI-STEAM program for the gifted student and a post-test was conducted. The study results of the class that was conducted twelve times for two weeks are as follows. First, Individual area of leadership is meaningfully developed in statistics after GI-STEAM program. The sub-domains of leadership, such as the communication, organization management, society commitment and teamwork showed a statistically significant improvement. Second, the domain of creative personality didn't show meaningful difference after GI-STEAM program. However, the aesthetic in the sub-domains of the creative personality showed a statistically significant improvement. Third, learning flow was meaningfully developed in statistics after GI-STEAM program. The sub-domains of the leadership, such as the balance between challenge and ability, integration with behavior and consciousness, concrete feedback and Autotelic experience showed a statistically significant improvement. In conclusion, GI-STEAM is an effective program for improving ability of communication, aesthetic sensibility, which are core competency of 'creative-convergence' gifted students. For this reason, it is highly considered that various programs applying GI-STEAM should be developed.

• Journal of The Korean Association For Science Education
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• v.25 no.1
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• pp.26-40
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• 2005

Based on the Vygotskian perspective that a learner's thinking is constituted in his or her talk and the assumption that student talk in the classroom may occur in more than one way, this study examined discursive practices of students in Korean high school science classrooms. Data came from $11^{th}$ grade earth science classrooms where the Group Investigation (GI) method was implemented. Data source included verbatim transcripts developed from video recordings of class sessions in which students presented their science projects to the whole class and exchanged questions and answers during the presentations. The analysis of the videotape transcripts revealed five different modes of student talk, including 1) retrieving information, 2) reformulating information, 3) building on one's own experience, 4) elaborating current understanding, and 5) negotiating meanings with others. Considering that each of the five modes had different value for learning science, it was recommended that the teacher should engage students in more active modes of discourse and guide them into more sophisticated understanding of science.

• Journal of Veterinary Science
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• v.24 no.2
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• pp.33.1-33.7
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• 2023

Background: Laminitis is a complex and debilitating disease of horses. Numerous predisposing factors contribute to laminitis development, however the exact pathogenesis remains undetermined. Serum T4, cortisol, and histamine are components of the innate stress response and could play a causative or contributory role. Stress hormone concentrations in laminitis are largely unknown. Objective: To evaluate parameters associated with stress response in horses with laminitis, and compare these to healthy horses and horses with gastrointestinal (GI) disease. Methods: Thirty-eight adult horses presenting for non-medical conditions, GI abnormalities, or clinical laminitis were prospectively enrolled. Horses were assigned to the appropriate disease group (healthy, GI disease, and laminitis) and had blood drawn on presentation to the hospital. Samples were analyzed for plasma endogenous adrenocorticotrophic hormone (eACTH), serum cortisol, serum thyroid hormone, and plasma histamine. Results: Stress hormone concentrations were significantly different between horses in the laminitis and GI disease groups. Plasma histamine levels were highest in horses with laminitis, compared with GI disease and controls. Both horses with laminitis and GI disease had increased plasma eACTH when compared to healthy horses. Horses with GI disease had higher serum cortisol concentrations than horses with laminitis or controls. Serum T4 was lower in horses with GI disease than in horses with laminitis and controls. Conclusions: Horses with laminitis had relative increases in both plasma histamine and eACTH concentrations. Serum T4 and cortisol concentrations of horses with laminitis did not differ significantly when compared to healthy horses. The role of stress hormones in equine disease warrants further investigation.

• Korean Journal of Child Studies
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• v.23 no.6
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• pp.103-119
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• 2002

In this investigation of the effectiveness of the Project Approach Method the 32 4-to 5-year-old subjects (16 each in the experimental and comparative groups) were pre-tested before the Project Approach Method was applied (23 times over 7 weeks) in the experimental group while the comparative group had science activities using standard unit methods of instruction. Then, all the children had a posr-test. Data were analyzed by t-test and ANCOVA. Results showed differences between the experimental group and the comparative group in their scientific problem solving ability. Specifically, effects were found on 14 sub-factors, but no difference were found on 3 sub-factors.

• Journal of the Korean Society of Safety
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• v.31 no.2
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• pp.41-48
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• 2016

Recently, the frequency and intensity of localized heavy rain and typhoon due to the abnormal climate has increased, and especially the damage by an avalanche of earth and rocks similar to the landslide of Umyeon Mountain has become a social issue. However, the standardized damage investigation method doesn't yet exist, so the systematic analysis of the data has not been carried out. In this regard, this study developed assessment items to conduct standardized damage investigation of debris flow. To achieve this, preliminary assessment items were derived from analysis of literature review and the Delphi technique of 12 experts who are engaged in research facility, academia and industry was conducted. As a result, 29 assessment items which can be classified into 6 groups were determined. Surveying the relevant hand-on workers, details assessment items in each group were determined by exploratory factor analysis and reliability analysis.

• Journal of the Korean Mathematical Society
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• v.49 no.4
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• pp.733-743
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• 2012

For the "Hopf bundle" $S^1{\rightarrow}S^{2n,1}{\rightarrow}\mathbb{C}H^n$, horizontal lifts of simple closed curves are studied. Let ${\gamma}$ be a piecewise smooth, simple closed curve on a complete totally geodesic surface $S$ in the base space. Then the holonomy displacement along ${\gamma}$ is given by $$V({\gamma})=e^{{\lambda}A({\gamma})i}$$ where $A({\gamma})$ is the area of the region on the surface $S$ surrounded by ${\gamma}$; ${\lambda}=1/2$ or 0 depending on whether $S$ is a complex submanifold or not. We also carry out a similar investigation for the complex Heisenberg group $\mathbb{R}{\rightarrow}\mathcal{H}^{2n+1}{\rightarrow}\mathbb{C}^n$.

• Journal of Physiology & Pathology in Korean Medicine
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• v.22 no.6
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• pp.1537-1543
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• 2008

The purpose of this study was investigation to examine the prevention diabetic mellitus and treatment effect on Gastrodia Elata Blume(GEB) dieted at prior and after induced diabetic application. Prior induced diabetic 3 weeks ago application GEB dieted. It is to analysis changes in body weight, blood glucose, SOD, CAT and histopathological findings. For the fingding significantly concentration diabetic rats were divided into 3 different experimental groups and each groups were induced diabetic. Experimental group Ⅰ (STZ-induced diabetic rats; n=10), experimental group Ⅱ (after induced DM and GEB dieted rats; n=10), experimental group Ⅲ (Prior GEB dieted thereafter DM induced; n=10). Prior and After GEB dieted application was that body weight, blood glucose were increase in experimental group Ⅱ, Ⅲ. Specially, group Ⅲ was significantly change than group Ⅱ at 1st weeks. and the level of CAT were significantly decrease in experimental group Ⅱ, Ⅲ than group Ⅰ. but SOD level was increase in experimental group Ⅱ, Ⅲ than group Ⅰ. In histological observation; group Ⅰ showed decrease in the intensity and incidence of vacuolations, cellular infiltration and hypertrophy of in liver and kidney. The Gomori's stain result, group Ⅰ showed disruption ${\beta}$-cell in pancrease.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.26 no.3
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• pp.51-81
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• 2015

The Presidential Archives is a research institute that manages presidents' historical records and archives. It provides various education programs based on the presidential records and archives for teachers and students. The Ministry of Education introduced free-learning semester and has conducted test trials in 42 schools since 2013. All of the middle schools will conduct the free-learning semester from 2016. The $7^{th}$ educational curriculum includes creative experience activities. The Ministry of Education recommended that schools should cooperate with local public organizations for experience activities. But, It is difficult to cooperate with each other. This study proposed the experience education programs using the presidential records and archives for social studies education curriculum in order to do the meaningful education in the class of the creative experience activities. To do it, this study analyzes current situation, deducts the problems caused in domestic and foreign Archives experience education program, and adopts the cooperative learning models and components suited to experience activities.

• Journal of Pharmaceutical Investigation
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• v.23 no.1
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• pp.33-39
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• 1993

Polymerized vesicles were prepared from monomeric cholesterol-containing surfactant. These vesicles were used to extract the free cholesterol. To introduce spacer group into [cholesteryloxycarbonylmethyl] [2-(methacryloyloxy)ethyl]dimethylammonium chloride (CHODAMA), [5-[ (cholesteryloxy)carbonyl]pentyl] [2-(methacryloyloxy)ethyl]dimethylammonium bromide (CHODAMA-5) and [10-[(cholesteryloxy)carbonyl]decyl] [2-(methacryloyloxy)ethyl]dimethylammonium bromide (CHODAMA-10) were synthesized, In both case of polymerized vesicle with CHODAMA-5 and CHODAMA-10, the permeability was decreased and the amount of extracted cholesterol was also decreased, compared with the polymerized vesicle of CHODAMA.