• Journal of Korean Academic Society of Home Health Care Nursing
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• v.27 no.3
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• pp.356-371
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• 2020

Purpose: This study was conducted to assess the working conditions of home health nurses in hospital-based home health institutions nationwide. Methods: A secondary data analysis study was conducted based on the survey data on the working conditions of home health nurses, jointly conducted by the Korean Home Health Care Nurses Association and the Academic Society of Home Health Care Nurses in September 2020. Results: Of the home health nurses respondents, 82.4% worked in tertiary hospitals and general hospitals. Most of the working hours of home health nurses were 40 hours a week. Traffic accidents accounted for a significant proportion of accidents experienced by the home health nurse while performing their duties. Most of welfare and benefits systems applicable to home health institutions were in place. The time allocated to provision of home health nursing services was usually more than 30 minutes but less than 1 hour. The type of position of the individual in charge of home health care differed according to the type of medical institution. Conclusion: It is recommended that continuous investigation and analysis be conducted in order to establish a direction for improvement of home health nurses' working conditions, based on the related accumulated data.

• The Korean Journal of Health Service Management
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• v.8 no.3
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• pp.207-218
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• 2014

This study was to compare the recognition of future career and nurse's characteristics according to nursing school system. This study was based on cross sectional descriptive method. The data were analyzed by $x^2$-test, t-test, and ANOVA using PASW WIN 18.0 program. The data represented that students who were doing associated degrees or bachelor degrees, showed the similar level recognition of future career and nurse's characteristics. However they showed differences in recognition of the career where they could create and new things(t=2.933, p=.004) and working part time(t=2.328, p=.021). In regards to recognition of nurse's characteristics bachelor degrees students had higher professional ethics($4.59{\pm}.44$). This study proposed that these research results could be used for improving methodology of nursing education.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2008.11a
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• pp.328-333
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• 2008

Underground utility tunnels are important facilities not only as an essential social infrastructure for modern information society but as the economic and efficient carrier of various urban infrastructure including electric power lines, communication cables, gas pipes, water supply and drainage pipes and energy supplies to metropolitan and residential areas. It is the aim of this study to investigation study on the Maintenance Management for Fire Safety According to Analysis of Fire Accident in Korea.

• Proceedings of the KIEE Conference
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• 1997.07f
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• pp.2139-2142
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• 1997

The most important thing in vector control scheme is the knowledge of accurate electrical motor parameters. These parameters can computed by conventional motor test, such as no-load and locked rotor tests. However, the values from these tests are different from actual motor parameters, and the adjustment process of the parameters is time consuming. This paper presents an auto-tuning method for vector control of induction motor. The tuning algorithm is based on the rotor flux behavior of the induction motor for stepwise torque current command. The transient terminal voltage caused by the undesirable variation of the rotor flux is used for tuning the slip gain $K_5$ defined as the inverse of the rotor time constant. The electrical parameters of induction motor can also calculated by this method. The presented method is evaluated through the computer simulations.

• Journal of Environmental Health Sciences
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• v.32 no.3
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• pp.222-226
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• 2006

Smoking of tobacco cigarettes is associated with a rise in blood pressure together with increase in heart rate. This study was aimed to examine the acute effect of tobacco and non-tobacco cigarette smoking on the blood pressure and heart rate by randomized crossover study. In the results, systolic/diastolic blood pressure and heart rate changes after smoking were significantly different between male and female group. Blood pressure and heart rate were elevated after smoking, but statistical significance for the difference was identified only in the female group. Because Non-tobacco smoke made from leaves of E. ulmoides has no nicotine, its effect on blood pressure and heart rate was negligible. Remarkable difference of heart rate changes in women was observed between tobacco cigarette smoking group and non-tobacco cigarette smoking group.

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2003.10a
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• pp.171-171
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• 2003

• Biomedical Science Letters
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• v.13 no.2
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• pp.157-160
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• 2007

Endoplasmic reticulum (ER) plays formation of disulfide bonds and proper folding of secretory proteins. Cellular responses to ER stress enhances the stress-activated kinase pathway and the induces a lot of immediate-early genes. Among of them, the early growth response-1 (Egr-1), a transcription factor, which plays an important role in cell growth, development, differentiation, apoptosis and various types of injury. For that reason, we have tested the expression of Egr-1 against ER stress inducible drugs (tunicamycin, DTT, A23187 and BFA) to understand what kind of aspect occurred by ER stresses.

• Biomedical Science Letters
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• v.13 no.2
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• pp.153-155
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• 2007

Ferritin heavy chain 1 (FTH1) is an ubiquitous and highly conserved protein which plays a major role in iron homeostasis. The expression of FTH1 was specifically enhanced under various condition of endoplasmic reticulum (ER) stresses drugs such as Brefeldin A (BFA), DTT (Dithiothreitol), calcium ionophore A23187 and tunicamycin. We firstly report here that ER-stress induces up-regulated expression of FTH1 in FRTL-5 culture thyrocytes.

• 한국신재생에너지학회:학술대회논문집
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• 2008.05a
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• pp.526-529
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• 2008

The effect of air impurities on PEMFC performances were studied using electrochemical analysis, such as OCV monitoring, polarization, constant current operation, and electrochemical impedance spectroscopy. The nitrogen dioxide in air lowered the operation voltage at 1 A/$cm^2$ by 160 mV (10 ppm) and 227 mV (100 ppm), while the carbon monoxide effect was relatively not significant (30 mV at 100 ppm). For both nitrogen dioxide and carbon monoxide, the performances were largely recovered when pure air was provided again. Further study for additional air impurities and simulated air are under progress to provide fundamental data for the design of fuel cell vehicles.

• Journal of the Korean Society of School Health
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• v.17 no.2
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• pp.63-71
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• 2004

Purpose: This study was conducted to identify the epidemiological characteristics of school accidents in middle school students. Methods: The subjects in this study were the students of a middle school in Gangnung. The study period was one semester, from March 2 to July 15, 1999. Data were collected by one of the authors using a structured questionnaire, and the subjects who had school accidents and visited the school health care office were interviewed. The data was analyzed using the SPSS and SAS programs. Results: The semester incidence rate per 100 students was 31.6 cases. The daily accident rate was 2.8 cases, and the accident incidence density was 2.6 cases per 1,000 students days. The mean of accident incidence was 1.7 per student. The incidence was the highest in June. The most frequent cause of accidents was carelessness, and the accidents were most frequent at recess. Conclusion: It is necessary to conduct the analytic epidemiological study to identify the risk factors of school accidents.