• The Korean Journal of Malacology
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• v.18 no.2
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• pp.83-91
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• 2002

Reproductive cycle of natural population and artificial control experiments of gonadal development by the conditions of water temperatures-feeding and starvation of Ruditapes philippinarum were investigated by histological observations. The reproductive cycle of natural population in females and males can be categorized into five successive stages; early active (February to March), late active (April to May), ripe (April to August), partially spawned (May to October), and spent-inactive stage (August to March). In the artificial control experiments, gonadal development of this species was inhibited by the low water temperature (10$^{\circ}C$). In the experimental group which was exposed to artificial high water temperatures of 19$^{\circ}C$ and 22$^{\circ}C$, gonadal development was accelerated by the higher water temperatures and was faster (about one month) than that in natural populations. In the high water temperatures-feeding experimental group, the gonadal developmental phase was faster in the small-size group than that in the large-size group, and was faster in lower water temperature (10$^{\circ}C$)(p=0.01). The gonad developmental phases in the high water temperature (22-28$^{\circ}C$)-starvation experimental group showed faster (paired sample t-test, p=0.004) than those in the high water temperature-feeding group in females and males. In the high water temperature-feeding experimental group of female and male gonadal developments of small sized group were more sensitive than those in large sized group after 42 days cultivation, However, the gonadal development of male was more sensitive to the lower water temperature than female. On the whole, sexual maturation in the high water temperature experimental group was faster than those in the low water temperature group, and showed a significant difference (paired sample t-test, p=0.001) between female and male. In the starvation experimental group after 42 days, gonadal developments in the high water temperature-large male group showed faster than those in the high water temperature-large female group. However, in small size, gonad developmental phases showed the same pattern between feeding and starvation experimental groups. During the main spawning season, in the high water temperature-starvation experimental groups in females and males, their gonadal development showed faster than that in higher water temperature-feeding experimental group regardless of their sexes and individual sizes and showed a significant difference (paired sample t-test, p=0.004).

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.1-10
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• 2016

The purpose of this study was to examine the effect of aroma inhalation on stress, anxiety and depression in coronary care unit patients. The study was a nonequivalent control group non-synchronized design. Participants were thirty patients for the experimental group, and thirty-three patients for the control group. The instruments were VAS, the equipment, developed by Spielberger(1972) and adapted by Kim & Shin(1978), Beck Depression Inventory-II(BDI-II). Data were collected from 25 February, 2015 to 8 May, 2015. The data were analyzed number and percentage, $x^2$-test, t-test, paired t-test. There were no statistically significant effects of aroma inhalation treatment for patients in coronary care unit on the stress, anxiety, and depression. Therefore, it is required follow-up studies that it is tried in a variety of ways for reducing the stress, anxiety, and depression in coronary care unit patients,

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.12
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• pp.5759-5765
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• 2011

This study was done to compare the educational effects of two nursing students groups, CPR theoretical and practical education versus CPR theoretical education only. It would be used as a basis for more effective CPR training of future nursing students. The subjects in study were 72 nursing students in D college D city, from august 22 to august 24, 2011. The collected data were analyzed with SPSS WIN 18.0 program for the frequency, percentage, $x^2$-test, t-test and paired t-test. On the findings of this study, CPR training improved not only CPR performance but also self-efficacy in the both groups. Especially, the combination with theoretical and practical education was seen as a more effective methods. Therefore, combinational training would be required for more effective CPR training, rather than focusing on training for improving their simple knowledge. Furthermore, it will help nursing students to perform quickly and accurately CPR in unforeseen situations.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.3058-3068
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• 2014

This experimental research is aimed to apply a health promotion program based on Cox's interaction model to such college students as are on the brink of dyslipidemia, so as to investigate the effects of the program on the subjects' blood lipid indexes including total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL), and low-density lipoproteins (LDL). The subjects are 39 in all including the experimental group comprising 20 and the control group comprising 19. The analyses applied include descriptive statistics using SPSS WIN 18.0, $X^2$-test, independent t-test, and paired t-test. By means of nursing interventions which are an element of client-professional interaction, the following were offered including health information (exercise management, dietary management, health education), emotional support (sharing of experiences, encouragement, self expression), decision-making controlling (counselling by phone), and professional/ technical abilities; and blood lipid indexes were measured before and after the interventions. The results of this research found that TC, TG and LDL decreased significantly and HDL increased significantly in the experimental group, which indicates that the health promotion program was effective.

• The Journal of the Korea Contents Association
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• v.18 no.2
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• pp.490-501
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• 2018

This study was conducted to develop and test effects of E-book based Flipped Learning education for nursing students. This study was one-group pretest-posttest design. The data were collected from 54 second-year nursing students in the located Y city and August 28 2017 to October 16 2017. The data were analyzed by descriptive statistics, paired t-test, Pearson's correlation coefficient, and stepwise multiple regression with SPSS 20.0 program. The results showed that the program was effective in increasing the critical thinking disposition (t=-8.62, p<.001), academic self-efficacy (t=-9.62, p<.001) and major satisfaction (t=-8.11, p<.001). The result of the stepwise multiple regression indicates the critical thinking disposition predict 13.4% (F=9.22, p<.001) of major satisfaction. The result of the stepwise multiple regression indicates the critical thinking disposition predict 13.4% (F=9.22, p<.001) of major satisfaction. Therefore, strategies for enhancing critical thinking disposition is needed by applying various teaching and learning strategies for nursing students.

• Journal of the Korea Convergence Society
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• v.11 no.12
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• pp.373-381
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• 2020

The purpose of this study was performed to examine the effects of simulation integrated with problem based learning(S-PBL) on self-leadership, critical thinking disposition, goal commitment for nursing students. The design was a one group pre-post test. The subjects consisted of one group of 90 fourth year nursing students of K Colleage. The period for this study was from March to June in 2019. The collected data were analyzed by Paired t-test, Pearson correlation coefficient. This study showed significantly higher self-leadership(t=-16.22, p<.001), critical thinking disposition(t=-11.36, p<.001), goal commitment(t=-7.06, p<.001). There was a significant positive correlation between self-leadership and critical thinking disposition(r=.438, p<.001), self-leadership and goal commitment(r=.285, p<.001). In conclusion, this study show that integrated with problem based learning(S-PBL) can be used for improvement the self-leadership, critical thinking disposition, goal commitment. It is suggested to check the effect of simulation integrated with problem based learning applying various nursing situations in the future.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.11-17
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• 2023

This study investigates the effects of flipped learning on self-directed learning ability(SDLA), learning attitude, and lesson satisfaction for nursing students of the university. The research participants and data collection were conducted on 41 nursing students in A city from March 1 to June 16, 2022, and the research design is a one-group pretest-posttest design. SDLA, learning attitude, and lesson satisfaction were investigated, and flipped learning lectures were applied to the experimental group as experimental treatment. SPSS 27.0 version was used for statistical analysis and the Paired T-test was applied the effect test before and after the experiment. As a result, the learning attitude of nursing students showed a positive correlation with SDLA and lesson satisfaction, and the flipped learning education method showed SDLA (t=-8.73, p<.001) and learning attitude (t=-6.99, p<.001) and lesson satisfaction (t=-2.17, p<.05) All were statistically significant.

• The Korean Journal of Nuclear Medicine Technology
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• v.18 no.1
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• pp.153-157
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• 2014

Purpose: SLE (systemic lupus erythematosus) is an inflammatory autoimmune disease, characterized by various autoantibody. The detection of Anti double-stranded DNA (Anti-ds DNA) is important in the diagnostics of SLE, and include the American College of Rheumatology (ACR) diagnostic criteria for SLE. Also SLE disease activity and correlativity with the level Anti-ds DNA antibody have been reported and Anti-ds DNA antibody quantitative test is very useful for tracing before and after SLE treatment. When These Anti-ds DNA antibody test (Farr assay: $^{125}I$ labeled ds-DNA and bound Anti-ds DNA antibodies complex in serum is precipitated by ammonium sulfate and used to centrifugation, measured it) inhaled supernatant after centrifugation, a lipemic specimen does not facilitate the formation of precipitate and also occurs situation was inhaled with precipitate. To solve these problems, The Influence of the degree of lipemic specimen was evaluated. Materials and Methods: September 2012 to February 2013, We selected lipemic samples (n=81) of specimen commissioned by Anti-ds DNA antibody test. Lipemic samples were done pre-treatment (high-speed centrifugation: 14,000 rpm 5 mins) used a micro-centrifuge (Eppendorf Model 5415D). At the same time lipemic specimen and pre-treatment samples were performed Anti-ds DNA antibody test (Anti-ds DNA kit, Trinity Biotech, Ireland). Statistical analysis were analyzed Pearson's correlation coefficients and regression and paired t-test, and Difference (%). Results: Experimental group 1 (Lipemic Specimen Anti-ds DNA Ab concentration ${\leq}7IU/mL$) at y=0.368X+4.732, $R^2=0.023$, Pearson's correlation coefficient was 0.154, paired t-test (P=0.003), Difference (%) mean 65.7 and showed a statistically significant difference. Experimental group 2 (Lipemic Specimen Anti-ds DNA Ab concentration ${\geq}8IU/mL$) at y=0.983X+0.298, $R^2=0.994$, Pearson's correlation coefficient showed 0.997, paired t-test (P=0.181), Difference (%) mean -5.53 made no statistically significant difference. Conclusion: Lipemic sample of low Anti-ds DNA Ab concentration (2.5-7 IU/mL) and the result is obtained pre-treatment (high-speed centrifugation: 14,000 rpm 5 mins) were made a significant difference statistically. Anti-ds DNA is one of the primary auto-antibodies present in patients with SLE, and remain an important diagnostic test for SLE. Therefore, we recommend preprocessing (high-speed centrifugation: 14,000 rpm 5 mins) in order to exclude the influence of lipemic specimen.

• Journal of the Korea Convergence Society
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• v.9 no.2
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• pp.267-276
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• 2018

The purpose of this study was to verify the effectiveness of horticultural activities program for 4th grade nursing students' emotional intelligence and stress coping. The study method was a non-equivalent control group pretest-posttest design. Participants were recruited with 4th grade nursing students from two nursing colleges. They were assigned to the experimental group (n=29) or the control group (n=30) using a computerized blocked randomization. Horticultural activities program was consisted of 10 sessions which were 2 times a week for 80 mins at each session during 5 weeks. Pretest and posttest were used to measure emotional intelligence and stress coping using the same structured questionnaires. Data was analyzed using frequency analysis, descriptive statistics, ${\chi}^2-test$, t-test, Fisher's exact test, Kolmogorov-Smirnov, independent t-test and paired t-test. The result showed a significant difference that the experimental group's emotional intelligence(t=-3.33, p=.002) and stress coping(t=-2.35, p=.023) score was higher than the control group's. The results of this study suggests that the horticultural activities program is effective in terms of emotional intelligence and stress coping for $4^{th}$ grade nursing students.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.487-494
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• 2011

This paper is to investigate the efficacy of cyber education by self-assessment strategy. Self-assessment strategy contains self-monitoring function and self-control function. 202 students of online university attended and analyzed with frequency, correlation, t-test, Paired t-test. The major findings were as follows. The learners who experienced self-assessment in the initial stage of class had higher changes in social distance to the mentally disabled people positively than the learners who didn't experienced that. This self-assessment strategy can be assumed that it is effective strategy to improve e-learning efficacy and it will contribute to self-directed education for enhancement of on-line education.