• Journal of the Korean Applied Science and Technology
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• v.38 no.4
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• pp.1081-1092
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• 2021

The purpose of the study was to examine the effects of the 16-week combined exercise on the blood dopamine concentrations, functional fitness and QOL in patients with parkinson's disease. To this end, 24 persons parkinson's disease in over 60 years old who participated in this study were classified in to the exercise group(n=12) and control group(n=12), and then the exercise group was twice a week for 16-weeks, 70 min per session combined exercise was applied. The test dada were analyzed by two-way repeated measures ANOVA, paired t-test, and independent t-test. The alpha level of .05 of significance. As a result, first, parkinson's disease who regularly participated in the combined exercise significantly increased blood dopamine concentrations(p<.001). Second, parkinson's disease who regularly participated in the combined exercise significantly improved grip strength(p<.001), arm curl(p<.001), stand up and sit down a chair(p<.001), 3m walk and come back(p<.01). Third, parkinson's disease who regularly participated in the combined exercise significantly improved QOL(p<.001). Thus, the combined exercise had the positive effects and may be helpful to increased the blood dopamine concentration and improved functional fitness and QOL.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.26-37
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• 2019

Recently, standardization of installation progress and technology of site acceptance test(SAT) for energy storage system(ESS) are being required due to performance of ESS depending on working condition and environment even though the quality and safety of each component of ESS　is guaranteed. And also, it has been required to perform not only performance testing by H/W equipments but also performance verification by S/W tool, in order to more accurately and reliably validate the performance of the ESS in advanced countries. Therefore, this paper proposes evaluation algorithm for SAT to evaluate performance of ESS and presents modeling of SAT test equipment for ESS by using PSCAD/EMTDC. Furthermore, 30[kW] scaled portable test equipments is implemented based on the proposed algorithm and modeling. From the various simulation and test results, it is confirmed that performance of ESS related to characteristics of capacity and Round-trip efficiency, Duty-cycle efficiency, low voltage ride through(LVRT) and Anti-islanding can be accurately evaluated and that the simulation results of PSCAD/EMTDC are identical to test results of 30[kW] test equipment.

• Journal of the Korea Institute of Building Construction
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• v.19 no.4
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• pp.361-371
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• 2019

In 2017, the ratio of the number of victims and deaths in the construction industry was the highest with 25.2% and 29.6%, respectively. Especially, as safety accidents at construction sites continue to increase, the economic loss is greatly increased too. Therefore, in order to prevent safety accidents in the construction work, the safety risk assessment index by type of construction was developed, and the main results of this study are as follows. First, 17 factors related to safety accidents at construction sites were derived through survey and interview survey, and this study suggested 9 items(process, type of construction, progress rate, contract amount, number of floors, safety education, working days and weather) throughout the expert advisory meeting. Second, the risk assessment index for safety accidents was developed based on the ratio and intensity of safety accidents. Third, to verify the risk assessment model, the construction safety risk assessment index by type of construction was derived by surveying and analyzing the statistics of the construction accident. In addition, the risk strength was calculated by dividing human damage caused by construction safety accidents into those killed and injured. The risk assessment index based on the frequency and intensity of safety accidents by type of construction is expected to be utilized as basic data when assessing the risk of similar projects in the future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.6
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• pp.583-590
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• 2021

This paper is a study on the digitization of an analog 3D pen. The term digital implies features such as homeostasis, transformability, combinability, reproducibility, and convenience of storage. One device that produces a combination of these digital characteristics is a 3D printer, but its industrial use is limited due to low productivity and limitations with materials and physical characteristics. In particular, improvements are required to use 3D printers, such as better user accessibility owing to expertise and skills in modeling software and printers. Complementing this fact is the 3D pen, which is excellent in portability and ease of use, but has a limitation in that it cannot be digitized. Therefore, in order to secure a digitalization capability and ease of use, and to secure the safety of printing materials that pose controversial hazards during the printing process, research problems and alternatives have been derived by combining food, and digitization was demonstrated with a newly developed 3D pen. In order to digitize the 3D pen, a sensor in a structured device detects the motion of an analog 3D pen, and this motion is converted into 3D data (X-Y-Z coordinate values) through a spatial analysis algorithm. To prove this method, the similarity was confirmed by visualization using MeshLab version 1.3.4. It is expected that this food pen can be used in youth education and senior healthcare programs in the future.

• Journal of Industrial Convergence
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• v.20 no.5
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• pp.93-100
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• 2022

This study is a descriptive survey study that applies the planned behavior theory to identify the factors influencing the childbirth intention of unmarried men and women. Data were collected from April 05 to April 23, 2021 for 168 unmarried men and women. As a result of the study, in general characteristics, male, old, highly educated, occupational, and non-regular workers had statistically significantly higher childbirth intentions. As a result of examining the correlation between the variables constituting the theory of planned behavior(TPB), it was found that the more positive the attitude toward childbirth, the greater the subjective norm, and the greater the perceived behavior control, the higher the intention to give birth. Multiple regression analyses showed that the factors affecting fertility intention on men and women. The factors affecting fertility intention in men was attitude, with an explanatory power of 62.2% and the factors affecting fertility intention in women were attitudes and perceived behavioral control, and the explanatory power of these variables on fertility intention was 69.0%. In order to increase the intention to give birth, a comprehensive approach is needed, and the research is meaningful in that the results of this study provided basic data in the development of policies and education programs related to low birth rates in the future.

• Journal of Appropriate Technology
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• v.6 no.1
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• pp.37-44
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• 2020

Medical waste is any kind of waste that contains infectious material and recommended not to be transferred for infection control. As a means of disposal, incineration has better points than dumping or landfill in the quantity reduction, odorless and nonhazardous. However, open burning and incineration of health care wastes under bad circumstances, can result in the emission of environmental pollutants to air. A burial of biological waste brings pollution of soil and water. Most of sub divisional hospitals in Fiji transfer their medical wastes to divisional hospitals for incineration. In 2011, 62,518 kg of medical waste was incinerated in the three divisional hospitals. However, some medical wastes are considered as general waste and burnt or sent to landfill site, some are buried on site in some sub-divisional hospitals. In this regards, urgent education is necessary for awareness promotion to relevant personnel in medical waste treatment. On site incineration using small scale incinerator is more recommended than transportation of medical wastes treatment in Fiji. Moreover, remotely controllable and fixable small scale of incinerator is more desirable in sub-divisional hospitals. It is recommended that Fiji government to set up a legal framework for medical waste management (MWM), to develop specific guidelines for MWM, to set up a training system for MWM to ensure that all relevant personnel are trained, to develop a monitoring and supervision system for MWM, to clarify the future financing of MWM activities, and to improve the MWM infrastructure.

• Journal of Service Research and Studies
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• v.10 no.4
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• pp.57-70
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• 2020

Globally, cloud service is a core infrastructure that improves industrial productivity and accelerates innovation through convergence and integration with various industries, and it is expected to continuously expand the market size and spread to all industries. In particular, due to the global pandemic caused by COVID-19, the introduction of cloud services was an opportunity to be recognized as a core infrastructure to cope with the untact era. However, it is still at the preliminary stage for market expansion of cloud service in Korea. This paper aims to empirically analyze how cloud services can be accepted by users by each industry through extended Technology Acceptance Model(TAM), and what factors influence the acceptance and avoidance of cloud services to users. For this purpose, the impact and factors on the acceptance intention of cloud services were analyzed through the hypothesis test through the proposed extended technology acceptance model. The industrial sector selected four industrial sectors of education, finance, manufacturing and health care and derived factors by examining the parameters of TAM, key characteristics of the cloud and other factors. As a result of the empirical analysis, differences were found in the factors that influence the intention to accept cloud services for each of the four industry sectors, which means that there is a difference in perception of the introduction or use of cloud services by industry sector. Eventually it is expected that this study will not only help to understand the intention of using cloud services by industry, but also help cloud service providers expand and provide cloud services to each industry.

• Journal of Digital Convergence
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• v.20 no.1
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• pp.33-39
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• 2022

This study aims to investigate the online class preference depending on students' gender and school level. To achieve this aim, the study conducted a survey on 4,803 elementary, middle, and high school students in 17 regions nationwide. The valid data of 4,524 were then analyzed using the Apriori algorithm to discern the associated patterns of the online class preference corresponding to their gender and school level. As a result, a total of 16 rules, including 7 from elementary school students, 4 from middle school students, and 5 from high school students were derived. To be specific, elementary school male students preferred software-based classes whereas elementary female students preferred maker-based classes. In the case of middle school, both male and female students preferred virtual experience-based classes. On the other hand, high school students had a higher preference for subject-specific lecture-based classes. The study findings can serve as empirical evidence for explaining the needs of online classes perceived by K-12 students. In addition, this study can be used as basic research to present and suggest areas of improvement for diversifying online classes. Future studies can further conduct in-depth analysis on the development of various online class activities and models, the design of online class platforms, and the female students' career motivation in the field of science and technology.

• Journal of the Korean Applied Science and Technology
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• v.39 no.2
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• pp.205-219
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• 2022

This study is a descriptive research study to understand the effects of nurses' perception of the disabled, contact experience with the disabled, and human rights sensitivity on attitudes toward the disabled. The subjects of the study were 181 nurses working at two university hospitals in D City and one university hospital in C Special Self-Governing City. Data were collected from September 2, 2021 to October 6, 2021. The collected data wre analyzed using IBM SPSS 26.0 program, and analyzed with t-test, ANOVA, Pearson's Correlation Coefficients, and Multiple Regression Analysis. Factors affecting the subject's attitude toward people with disabilities were perception of people with disabilities(t=-3.96, p<.001), presence or absence of contact with patients with disabilities(t=3.23, p=.001), and the ability to perceive responsibility among human rights sensitivity(t=2.13, p=.035), whether or not they had completed education for improvement the awareness of the disabilities(t=2.90, p=.004), and whether they were recognized of the Act on the Right to Health and Medical Accessibility for the Disabled(t=2.44, p=.016), which showed 30% of explanatory power(F=9.36, p<.001). Accordingly, it is necessary to develop an educational program that can foster nurses' attitudes toward the disabled, including awareness of the disabled, human rights sensitivity, the Health Rights Act for the Disabled, and the experience of contact with the disabled.

• Journal of the Korean Applied Science and Technology
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• v.39 no.6
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• pp.864-873
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• 2022

The subjective health status of adolescence reflects one's overall socio-emotional function and is an important factor in determining the health-related quality of life during this period. This study was to identify the correlation between subjective health status and health equity of adolescents. Data from the 16th online survey of youth health behavior (2020) was used to analyze 39,987 adolescents. Health equity was used as indicator for residential areas, economic conditions perceived by students, household abundance, family type, and parental education. Subjective health status was classified as a healthy group("very healthy", "healthy") and unhealthy group("normal", "unhealthy", and "very unhealthy") in response to the question "how do you think your health is usually?" The data were analyzed using complex sample analysis by using SPSS/Win 22.0. Significant factors related to the subjective health status of subjects were the area of residence (OR=0.86, p=.031), economic level (OR=1.33-2.09, p<.001), and family type (OR=1.24, p=.033). The economic level perceived by adolescents was the most important variable related to the subjective health status of adolescents, and adolescents from multicultural families often perceived their health as unhealthy compared to adolescents from general families. Therefore, there is a need for continuous interest in adolescents with low economic levels and adolescents from multicultural families and specific strategies to improve their health status.