• Journal of Digital Convergence
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• v.17 no.12
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• pp.67-75
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• 2019

This study was conducted to analyze the effects of mathematics classes using engineering tools on students' mathematics academic achievement and mathematics learning attitude, focusing on the basic figure and drawing sections of the first grade of middle school. Eighty students of first-grade at H Middle School in South Gyeongsang province were divided into two groups, taking a total of six weeks of classes using engineering tools(Algeomath) and traditional tools, and covariate analysis(ANCOVA) was used to analyze students' mathematics academic achievements and changes in mathematical learning attitude. The analysis found that classes using engineering tools were effective in students' mathematics academic achievements and attitude of learning math. Based on the results of the study, the necessity of utilizing various engineering tools in the future secondary school math class and the prospect and implications of the classes were discussed.

• Korean Journal of Childcare and Education
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• v.9 no.1
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• pp.201-220
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• 2013

This study focused on science activities that need collaborative inquiry process and evaluate the effects of small group's science cooperative learning according to personality types on young children's science activities. The subjects are 30 five-year-old kindergarteners. They have been divided equally into three groups, extroversion(E), interversion(I), and heterogeneous group of EI mixed group depending on EI indicators through K-ABC cognitive ability tests and MMTIC personality types targeting. Both of groups have 10 members each. For data analysis, scientific attitude was analyzed with ANCOVA, scientific knowledge development was done with frequency analysis. As a result, first there was a difference in scientific knowledge development between the homogeneous group and heterogeneity group in small group's cooperative learning. Through the results of a Scheffe post-hoc test, there was a significant difference between E and I homogeneous groups but there was no difference between I homogeneous group and the heterogeneity group, and between E homogeneous group and the heterogeneity group, I homogeneous group had the most effective group composition in scientific attitude improvement.

• Education of Primary School Mathematics
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• v.10 no.2
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• pp.125-139
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• 2007

The purpose of this study seeks entry into a method to make the use of educational aids popular. To achieve it, it is observed that instructions applying worksheets to make an activation of use of educational aids have influences on mathematical achievement and mathematical disposition and attitude. All variables exception with the frequence of use of educational aids are controlled in both experimental group and comparative group. According to the result, there is no significant difference of mathematical achievement in pre t-test between two groups, while experimental group get 10 points higher than comparative group in average (t=0.519, p<0.01). On the other hand, within intra-experimental group the influences of use of educational aids on mathematical achievement is positive without the achievement levels of students. The difference dependent on the levels of student is sought by ANCOVA using prescores as a covariance, and it appears in the significance level of 5%(F=4.885, p<0.05), and the effect is more in the lower level of students than in the middle and high level.

• Journal of Preventive Medicine and Public Health
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• v.37 no.3
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• pp.225-231
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• 2004

Objectives : This study was performed to examine the influence of smoking on the blood cadmium concentration in university students. Methods : The study included 300 university students. A questionnaire interview was used to collect data. The urine cotinine and blood cadmium levels were measured as biological exposure indices. The data were analyzed using t-tests ANOVA and ANCOVA. Results : The median value of blood cadmium concentration was equal in both males and females ($0.8{\mu}g/l$). This level was relatively low in comparison with the reference value suggested by WHO (2001). ANCOVA showed that smoking related variables, urine cotinine and smoking amount, were significantly associated with the blood cadmium level (P=0.004, 0.015). However, the values with regard to traffic related air pollution were not significantly associated with the blood cadmium level. Conclusions : Smoking is an important source of nonoccupational cadmium exposure in young people. The Blood cadmium level is at least 10% higher in active smokers than in passive or nonsmokers. The level of urine cotinine can be used as an indicator of non-occupational exposure of respirable cadmium due to smoking, as there is a good correlation bestween smoking amount and the urine cotinine level.

• Journal of Korean Public Health Nursing
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• v.26 no.1
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• pp.82-90
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• 2012

Purpose: This study was conducted in order to compare muscle strength and gait ability of hemodialysis patients with those of healthy adults. Methods: Data were collected through a questionnaire, by testing of muscle strength and gait ability of 40 hemodialysis patients and 40 healthy adults. $X^2$-test, t-test, and ANCOVA were used in performance of data analysis. Results: First, variables including of occupation ( $X^2$=22.40,p<.001), body weight (t=-3.72, p<.001), and BMI ( $X^2$=14.65, p<.001) differed significantly between patients in the hemodialysis group and subjects in the healthy adult group. Second, using ANCOVA analysis with correction for related variables, such as occupation, body weight, and BMI as covariates, numbers for lift/reach (F=8.15, p<.001) and sit-to-stand (F=5.47, p=.001), and both maximum safe speed (F=9.17, p<.001) and normal comfortable speed (F=8.89, p<.001) were significantly lower for patients in the hemodialysis, compared with subjects in the healthy adult group. Conclusion: According to the results, muscle strength and gait ability of patients in the hemodialysis group were lower than those of subjects inthe healthy adult group. These findings suggest the importance and necessity for an interventional exercise and rehabilitation program for hemodialysis patients.

• Journal of Korean society of Dental Hygiene
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• v.15 no.2
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• pp.205-216
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• 2015

Objectives: The purpose of the study is to investigate the psychological state of the patients according to skeletal class III malocclusion symptoms. Methods: The subjects were 200 skeletal class III malocclusion patients. The questionnaire consisted of general characteristics, clinical manifestation, and T score of Korean version of self-rated Symptom Checklist-90-Revision modified by Jae-hwan Kim. The data were analyzed using SAS version 9.2 and t-test, ANOVA, and ANCOVA were used. Clinical manifestation included subjective recognition and radiological analysis. The subjective recognition of the patients consisted of self-satisfaction of the appearance, phonation, mastication, and temporomandibular joint pain. T score consisted of somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, and psychoticism. Results: The most serious factor in 9 scales was the severe TMJ pain by ANCOVA. Male patients had a higher T score in phobic anxiety, psyochoticism, somatization and depression than female patients. Those having low appearance satisfaction had the problem in interpersonal sensitivity. Obsessive-compulsive symptoms were conspicuous in phonation difficulty and temporomandibular pain. Conclusions: The patients with skeletal class III malocclusion have more satisfaction with appearance, pronunciation, and phonation than those with skeletal class III malocclusion and overjet. Proper dental treatment will improve the communication and quality of life.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.3
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• pp.1197-1206
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• 2013

The purpose of this study was to develop a suction care education program and to evaluate the effects on clinical performance, self-efficacy, and problem-solving process regarding suction practice. The participants were 96 in second-year nursing students at P university in Pusan, Korea. The data was collected from Oct. 6th toward Oct. 19th, 2011, and analyzed by ${\chi}^2$, t-test, ANCOVA test using SPSS 18.0. The scores of clinical performance were 23.72 in the experimental group who learned this program and 22.16 in the control group, and were statistically significant(p<.001). Self-efficacy were 7.58 in the experimental group and 7.08 in the control group, which was statistically significant(p=.03), and the pre-to-post difference of self-efficacy was statistically significant as well(p<.001). However, there were no significant differences in the problem-solving process(p=.06) and the pre-to-post difference related to this(p=.011). This study showed that clinical performance and self-efficacy were improved by suction care education program.

• Fire Science and Engineering
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• v.32 no.3
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• pp.123-133
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• 2018

This study analyzed the effects influencing the elderly's knowledge on fire safety and practices of fire safety accident prevention after developing a Fire Safety Education Program for the elderly. The program was developed through verification using some experts and a pilot study after selecting the objective, goals, contents, and teaching & learning methods of the program based on the basic survey and literature review. The effects of the program were verified by conducting some non-equivalent control group pre- and post-tests after dividing the targets into the experimental group (the Fire Safety Education Program for the elderly was implemented) and control group (only printed hand-outs were given) among 48 elderly people no younger than 65 years of age. A paired t-test revealed some statistically significant differences between the scores of the pre- and post-tests of the experimental and control groups. ANCOVA found that the effects of the program were significantly higher than those of the printed hand-outs because the post-test scores of the experimental group were higher than those of the control group.

• The Journal of the Korea Contents Association
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• v.9 no.9
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• pp.243-248
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• 2009

Among 74 patients who came to pain clinic to treat their backache, 37 patient were randomly allocated to experimental(finger-pressure therapy)group and another 37 patients were allocated to control(transcutaneous electrical nerve stimulator)group. The extent of backache was compared before and after experiment by ANCOVA test at both groups(p<0.005). The reduction of pain level by visual analogue scale at experimental group was statistically significantly bigger than control group when motion with front flexion(1.92), extension after front flexion(2.22), right flexion(1.23), and left flexion(1.21)(p<0.05).

• Journal of Digital Convergence
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• v.19 no.12
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• pp.597-604
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• 2021

The purpose of this study is a descriptive research to investigate the difference between career preparation behavior and major satisfaction level according to whether or not nursing students have taken career courses for nursing students to mke rational career choices. The participants were 221 nursing students. Data collection was conducted from December 1 to 15, 2019. The data was analysis with frequency and percentage, 𝛘²-test, mean and standard deviation and ANCOVA by using SPSS/WIN 20.0 program. The results were of this study showed that carrier preparation behavior(F=438.08, p<.001), Major Satisfaction(F=461.45, p<.001) have been confirmed significant difference depend on attending to college career course therefore, it is suggested to use career courses as a strategy to help nursing students make successful career decisions.