• Korean Journal of Child Studies
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• v.29 no.4
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• pp.43-63
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• 2008

This study developed an experience-based economic education program and examined its effects on young children's economic concepts and purchasing behavior. Subjects were 60 5-year-old kindergarteners assigned to an experimental or a control group. Instruments for pre- and post-tests were the Economic Concept Task (Laney, 1995) and the Purchasing Behavior Task (Jang, 2004). Experimental group children participated in the economic education program for 5 weeks; control group children listened to economic stories. Differences between pre- and post-test in the experimental group showed that the economic education program was effective in development of concepts of scarcity, opportunity cost, resource/production, goods/services, and complements/substitutes. Children's purchasing behavior changed partially after application of the program.

• Journal of Welding and Joining
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• v.32 no.3
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• pp.1-10
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• 2014

The efficient application of any welding process depends on the understanding of associated process parameters influence on the weld quality. The weld quality includes the weld bead dimensions, temperature distribution, metallurgical phases and the mechanical properties. A detailed review on the experimental and numerical approaches to understand the parametric influence of a single wire submerged arc welding (SAW) and multi-wire SAW processes on the final weld quality is reported in two parts. The first part deals with the experimental approaches which explain the parametric influence on the weld bead dimensions, metallurgical phases and the mechanical properties of the SAW weldment. Furthermore, the studies related to statistical modeling of the present welding process are also discussed. The second part deals with the numerical approaches which focus on the conduction based, and heat transfer and fluid flow analysis based studies in the present welding process. The present paper is the first part.

• The Journal of Korea Robotics Society
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• v.8 no.2
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• pp.67-74
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• 2013

This paper presents interaction force control between a balancing robot and a human operator. The balancing robot has two wheels to generate movements on the plane. Since the balancing robot is based on position control, the robot tries to maintain a desired angle to be zero when an external force is applied. This leads to the instability of the system. Thus a hybrid force control method is employed to react the external force from the operator to guide the balancing robot to the desired position by a human operator. Therefore, when an operator applies a force to the robot, desired balancing angles should be modified to maintain stable balance. To maintain stable balance under an external force, suitable desired balancing angles are determined along with force magnitudes applied by the operator through experimental studies. Experimental studies confirm the functionality of the proposed method.

• Korean Parent-Child Health Journal
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• v.12 no.2
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• pp.160-176
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• 2009

Purpose: The purpose of this study was to identify patterns and trends of studies, analyze the research, and improve direction of nursing research related to the neonatal pain relief intervention in Korea. Method: The studies were selected from dissertation, nursing journals and others in Korea. Result: Until 1995, there were no studies related to the neonatal pain relief intervention. The most studies have been increased rapidly after 2005. Pure of true experimental design of research design was used 5, Quasi experimental design was 7, preexperimental design was 7. Participants were preterm baby was 8, full-term baby was 9, and preterm and full-term baby was 2. Utilization of instruments as follows: NIPS, PIPP, ABSS, NFCS, pulse oximeter, EKG monitoring, and stethoscope. Contents of the research studies were classified 4 different types, such as studies of about the effect of auditory stimulation, taste stimulation, tactile stimulation, and topical anesthetic cream. The results of 25 studies were effective for the neonatal pain relief, but the results of 5 studies weren't. Conclusion: In the future studies need to develop the various instrument which is assessment of neonatal pain. It is important to the integrated by meta analysis. Additionally, we should develop protocol nursing intervention for the effective pain release.

• Korean Journal of Adult Nursing
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• v.20 no.6
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• pp.895-904
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• 2008

Purpose: This study analyzes the trends of nursing researches about organ donation and transplantation, and recommends the direction of future nursing studies in Korea. Methods: Ninety-nine researches based upon organ donation and transplantation in Korea were analyzed by descriptive statistics. Results: Among them 58 papers were master's theses and 9 were doctoral dissertations. Articles about organ beneficiaries were seventy. The 47 articles among them were for kidney transplantation. By the types of research design, there were 73 quantitative studies, 19 qualitative studies, and 9 methodological studies. In correlation studies, the quality of life of subjects were evaluated the association with stress, social support, self-efficacy, and compliance. In experimental studies, the independent variables were self efficacy promotion exercise, steroid medication, educational programs regarding an organ transplantation and a brain death, DanJeon breathing exercise, and telephone counseling. The methods of qualitative studies were based on the grounded theory, phenomenology, interpretive phenomenology, and ethnography. The dominant concepts of qualitative researches were experiences of a decision-making of donors and of recipients for organ transplantation. Conclusion: Descriptive surveys or correlation studies were predominant on the nursing research about organ transplantation. Qualitative studies were conducted to some extent. It is recommended to conduct clinically applicable interventional researches with the experimental design.

• Journal of Korean Biological Nursing Science
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• v.20 no.2
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• pp.92-102
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• 2018

Purpose: The purpose of this study was to analyze the current status of studies related to the learning methods of biological nursing subjects in Korea. Methods: Five databases (KoreaMed, KMbase, NDSL, KISS, KiSTi) and grey literature were searched prior to February 2018. A total 12 studies met the inclusion criteria including 11 articles and 1 proceeding. Results: We included five experimental studies, five non-experimental studies, and two mixed method studies. First, most of the studies that applied a learning method focused on the subject of human anatomy and physiology; team-based learning was the method that was utilized the most. Second, the necessity of well-designed research was confirmed because the quality of included studies was low. Third, the research variables identified were mainly concentrated on the affective domain, and included satisfaction, motivation, self-efficacy, self-directed learning, confidence, attitude. We confirmed the need to develop a learning program that can also improve the cognitive and psychomotor domain variables in future research. Conclusion: The results of this study suggest that further research should be conducted with consideration the domain of research variables evenly. In addition, future studies should apply various learning methods and included randomized controlled trials.

• Korean Journal of Adult Nursing
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• v.13 no.1
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• pp.15-28
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• 2001

The purpose of this study was to identify the trends of resourcefulness researche studies for suggesting the future direction of study. Study design, types of subjects, measurement tools, study concept, and outcome were examined by reviewing 61 research studies published from 1980 to 1999. The results were as follows: 1. There were 24 works in the 1980s and 37 works in 1990, according to the published year of resourcefulness study. Nonexperimental studies like descriptive study, correlational study and comparative study were more frequent than experimental studies. 2. Research studies that consisted of 30- 100 subjects were the most numerous with 27 studies in all. The majority of study subjects was shown as healthy students and depressive patients. 3. Most studies used Rosenbaum's Self Control Schedule(SCS) for assessing resourcefulness. Reliabilities of resourcefulness researches were cronbach ${\alpha}=.70$ or more. According to statisitical tests done for internal validity, SCS was negatively correlated to maladaptation. Factor analysis revealed that the most parsimonious structure was 3 to 6 factors. The total communality variance in the SCS was about 40 %. Other tools used with the SCS were about coping, depression, satisfaction of life and symptoms, self management and health promotion. 4. In correlational studies, concepts like depression, anxiety, and psychological symptoms were related to resourcefulness negatively. Adaptive functioning, life satisfaction and self achievement had positive correlations to resourcefulness. 5. Studies on comparison between a healthy person and depressive patient or smoker and non-smoker were done. There were coping, depression, symptom, self efficacy, health problem and self-control as comparative concepts. 6. Study subjects consisted of depressive patients in 9 of 18 experimental studies. The majority of studies were done with cognitive-behavioral therapy as an experimental intervention. The most effective treatment was revealed in high resourcefulness group. Since the above findings, resourcefulness research increased since 1980 and mostly non-experimental design for quantitative study were done. In the field of nursing, research about resourcefulness was in an initial stage. It is expected that further research needed to be done. Recommendations on the basis of the present research suggest that it is necessary to replicate studies, develop nursing intervention enhancing resourcefulness and apply it to patients with chronic diseases including cancer.

• Toxicological Research
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• v.26 no.2
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• pp.83-93
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• 2010

Since it was first observed in late 1970s that human cancers often had decreased manganese superoxide dismutase (MnSOD) protein expression and activity, extensive studies have been conducted to verify the association between MnSOD and cancer. Significance of MnSOD as a primary mitochondrial antioxidant enzyme is unquestionable; results from in vitro, in vivo and epidemiological studies are in harmony. On the contrary, studies regarding roles of MnSOD in cancer often report conflicting results. Although putative mechanisms have been proposed to explain how MnSOD regulates cellular proliferation, these mechanisms are not capitulated in epidemiological studies. This review discusses most recent epidemiological and experimental studies that examined the association between MnSOD and cancer, and describes emerging hypotheses of MnSOD as a mitochondrial redox regulatory enzyme and of how altered mitochondrial redox may affect physiology of normal as well as cancer cells.

• International Journal of Computer Science & Network Security
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• v.22 no.12
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• pp.139-145
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• 2022

The study aimed to build a proposed program for training Social Studies teachers in the light of electronic functional competencies, the researcher used the experimental method with a quasi-experimental design, the study sample consisted of (37) Social studies teachers in Ismailia. A proposed program in the light of electronic functional competencies. A measure of awareness of the dimensions and components of electronic feasibility. The study concluded several results: There is a statistically significant difference at the level of (a ≤0.01) between the average scores of the teachers of the research group in the pre and post measurements of the measure of awareness of the dimensions and components of electronic functional competencies in favor of the teachers scores in the post-measurement. Training Social studies teachers on the functional electronic competencies necessary for them to keep up with educational developments.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.9 no.2
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• pp.1-9
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• 2014

Objectives : Many studies are being done in the method of experimental chuna science in China. The aim of this review is to understand and study the methods of experimental chuna science, focusing on the effects of chuna on circulatory system. Methods : We reviewed "實驗推拿學" and Chinese journals were searched using China National Knowledge Infrastructure(CNKI). Korean journals were searched using 3 Korean web databases(OASIS, NDSL, RISS). Results : By experimental chuna science, effect of chuna on blood pressure, cardiovascular system, hemorheologic system, blood flow velocity, circulation and lymphatic system were proved. Conclusions : Experimental chuna science is necessary for improvement of chuna to a higher level. In Korea, not many experimental studies are being done, especially in chuna and it has very narrow target diseases. For this reason we need to learn and adapt the methods of experimental chuna science of China.