• Journal of Digital Convergence
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• v.17 no.12
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• pp.281-288
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• 2019

The purpose of this study is to identify the impact on patient safety management activities. In this study, 134 nurses from three local hospitals were investigated for patient safety culture recognition, patient safety capacity, and patient safety management activities, and the impact on patient safety management activities was thus attempted. The patient safety culture recognition level was 4.25/5, the patient safety capacity was 4.37/5, the patient safety management activity was 4.26/5, and the patient safety awareness and patient safety capability(r=.765, p<.001) and Patient Safety Capacity and Patient Safety Management Activity (r=.837, p<.001) and Patient Safety Capacity and Recognition of Patient Safety Culture(r=.728, p<.001) had a significant amount of correlation. Factors affecting patient safety management activities(β=.582, p<.001), Patient Safety Culture Recognition(β=.3632, p<.001), position(β=-.132, p=.009) Patient safety requires strengthening the capabilities of nurses and systematic training and evaluation of continuous patient safety activities.

• Journal of the Korean Society of Radiology
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• v.15 no.5
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• pp.613-620
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• 2021

The purpose of this study is to propose a convolutional neural network model that can classify normal and abnormal(cardiomegaly) in chest X-ray images. The training data and test data used in this paper were used by acquiring chest X-ray images of patients diagnosed with normal and abnormal(cardiomegaly). Using the proposed deep learning model, we classified normal and abnormal(cardiomegaly) images and verified the classification performance. When using the proposed model, the classification accuracy of normal and abnormal(cardiomegaly) was 99.88%. Validation of classification performance using normal images as test data showed 95%, 100%, 90%, and 96% in accuracy, precision, recall, and F1 score. Validation of classification performance using abnormal(cardiomegaly) images as test data showed 95%, 92%, 100%, and 96% in accuracy, precision, recall, and F1 score. Our classification results show that the proposed convolutional neural network model shows very good performance in feature extraction and classification of chest X-ray images. The convolutional neural network model proposed in this paper is expected to show useful results for disease classification of chest X-ray images, and further study of CNN models are needed focusing on the features of medical images.

• Journal of vocational education research
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• v.37 no.1
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• pp.101-118
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• 2018

The purpose of this study was to investigate the effect size of the difference of job satisfaction by type of employment by combining data from previous studies. For this purpose, the total of 95 articles analyzed. For the analysis of data, CMA(Comprehensive Meta-Analysis) 2.0 program was used and statistical significance was set at 5%(${\alpha}=0.05$). The main conclusions of this study are as follows. First, regular workers have higher job satisfaction than non-regular workers and the effect size of employment type is medium. Second, among five constituents of job satisfaction, the difference of wage and promotion satisfaction is greater than the difference of satisfaction in human relations, work and working environment satisfaction. Third, the job satisfaction of regular and non-regular workers differs according to the occupation areas. Fourth, there is a big difference in job satisfaction in financial, insurance, food and service occupation areas, and regular workers have higher job satisfaction than non - regular workers. On the other hand, non-regular workers have higher job satisfaction than regular workers in health, medical, social occupation areas.

• Korean Journal of Clinical Laboratory Science
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• v.50 no.4
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• pp.391-398
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• 2018

Mesenchymal stem cells (MSCs) are an attractive resource for refractory patients because of their anti-inflammatory/immunomodulatory capability and multi-lineage differentiation potential. The transplantation of MSCs has led to positive results in preclinical and clinical application to various diseases, including autoimmune disease, cardiovascular disease, cancer, liver cirrhosis, and ischemic stroke. On the other hand, studies have shown that paracrine factors, not direct cell replacement for damaged cells or tissue, are the main contributors in MSC-based therapy. More recently, evidence has indicated that MSC-derived exosomes play crucial roles in regulating the paracrine factors that can mediate tissue regeneration via transferring nucleic acids, proteins, and lipids to the local microenvironment and cell-to-cell communication. The use of these exosomes is likely to be beneficial for the therapeutic application of MSCs because their use can avoid harmful effects, such as tumor formation involved in cell transplantation. Therefore, therapeutic applications using MSC-derived exosomes might be safe and efficient strategies for regenerative medicine and tissue engineering. This review summarizes the recent advances and provides a comprehensive understanding of the role of MSC-derived exosomes as a therapeutic agent.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.110-124
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• 2019

In recent years, over-supply of hospitals has made hospital management more difficult and hospitals have introduced innovative hospital management to enhance customer satisfaction. The purpose of this study is to investigate the effect of innovativeness of hospitals on customer satisfaction by using mediating effects of hospital capacity and location strategy. The subjects of this study were selected from 120 patients and caregivers who were hospitalized in Seoul and Metropolitan area hospitals and conducted questionnaire and statistical analysis. The results of this study are as follows: Firstly, this paper shows hospital Innovativeness does not significantly affect customer satisfaction. Unlike private companies, it is urgent to develop innovativeness measuring tools that are unique to hospitals differentiated from those of general companies. Secondly, although the impact of Innovativeness on hospital internal competency and location strategy was similar, location strategy(${\beta}=0.357$) had a greater impact on customer satisfaction than internal competency(${\beta}=0.283$). This suggests that the medical institution should take precedence over the detailed preparations based on its location marketability, traffic infrastructure, building sales and medical concentration from the time of its opening. Thirdly, this paper confirms through empirical analysis that the relationship between hospital Innovativeness and customer satisfaction is completely mediated by internal capacity and location strategy. The hospital's Innovativeness is affecting customer satisfaction by enhancing the hospital's internal competencies and inducing an active attitude toward establishing a location strategy.

• Journal of the Korean Society of Radiology
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• v.13 no.1
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• pp.39-44
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• 2019

Radiation safety management is being considered very important since radioactive isotopes such as Co-60 and Ir-192 are widely used in fields such as non-destructive test(NDT). In this study, the applicability of Mercury(II) Iodide($HgI_2$) source for tracing system was evaluated. To make sure the unit cell sensor's reliability, we evaluated the electrical properties of the sensor made with $HgI_2$, and then position dependence of the sensor was analyzed and compared with the dose distribution from the planning system. As a result of the evaluation, high reliability of the sensor was shown through the linearity of R-sq > 0.990 and reproducibility of CV < 0.015. In the position dependence evaluation, the maximum value was measured at the isocenter of the sensor and gradually decreased according to the distance. However, the dose distribution data from the planning system was turned out that has difference with that of the sensor up to 30%. This seems to come from the difference between single-point measuring based planning system and area measuring based sensor.

• 한국사회정책
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• v.20 no.3
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• pp.171-195
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• 2013

One of the current issues in Workers' Compensation Insurance is about the coverage range. Korea uses the definition of worker under the Labor Standards Act in Workers' Compensation Act and solved the problems associated with the coverage range of insurance group by the exceptional clause only for the groups which was raised about the need for the social protection. The purpose of this paper is to draw implications for solving problems which are associated with the coverage range of insurance group by reviewing the German literature. We focus on volunteers and persons in special types of employment. German government supports the activity of volunteers by providing with the protection service against the accidents. This paper shows how the coverage range is extended from the dependent employees in the introduction of the Workers' Compensation Insurance to the people who need social protection focusing on the volunteers. The implications of this research are following. First, German system shows that Workers' Compensation Insurance can be extended to the groups which do not belong to the dependent employee but are worthy of protection. Second, it is necessary to provide volunteers in the social welfare system with the protection service against the accidents and the statutory accident scheme is recommendable to use. Third, volunteers in the social welfare system need to be compulsory insured. Fourth, Korea should find their own way in solving problems associated with persons in special types of employment.

• The Journal of the Korea Contents Association
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• v.20 no.12
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• pp.635-645
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• 2020

An "OpenNote" can be defined as the sharing of medical records between patient and doctors by online, and is a new trial to allow patients to access their medical records any time. To identify the need for the introduction of OpenNotes, which is expanding medical recrods, this study has researched the awareness and attitude towards medical records and OpenNotes among hospital workers in charge of part of medical servises. One of the results in this study is that recognizing his or her own records can impact his or her understanding his or her health status. Also, the subjects who were participated in this study generally agreed with the usefulness of the OpenNote and were willing to participate in the OpenNote. Meanwhile the subjects are admitting counterfeiting the medical records or falsifying them. The conclusion has been shown that patient-doctor sharing of medical records could help patients better understand their health information and encourage their self-care. When patients can access their own medical records easily, Unnecessary misunderstandings and distrust of records between patients and medical staff can be markedly reduced then it can help to build up the trust in a doctor-patient relationship. Considering not only the health utility of OpenNotes but also the impact on the trust of doctors, the pilot project of OpneNotes for experimental verification is proposed.

• Journal of the Korean Applied Science and Technology
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• v.38 no.3
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• pp.651-661
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• 2021

Eruca sativa, called arugula, is a perennial plant in the Brassicaceae family, an edible plant commonly used in Italian cuisine. To study as a cosmetic material application E. sativa was extracted with 70% ethanol (ES). Then ES was fractionated using n-hexane, chloroform, ethyl acetate, n-butyl alcohol and water (EHex, EEA, ECHCl₃, EBuOH and EDW). EEA showed mushroom tyrosinase inhibitory activity. ES, EEA and EBuOH showed inhibition of tyrosinase activity. As a result, ES is expected to have skin whitening efficacy. ES was applied to 0.05, 0.1% the toner and emulsion formulation to test the stability. The anti-microbial activity of eight bacteria and fungi including Staphylococcus aureus and Propionibacterium acnes which cause dermatitis and acne was evaluated. EEA showed effects in all of microorganisms. The toner and emulsion containing ES with 0.05, 0.1% were passed in the challenge test. At -20, 4, 25, 55 ℃ and daylight, there was no significant change on pH, viscosity for 4 months. However, emulsions had phase separation phenomenon at 55 ℃, so the base formulation needs improvement. In addition, through the skin penetration test, EEA penetrated 0.058% in 6 hr, predicting the clinical efficacy. This means that E. sativa can contribute whitening agent and the synergistic effect of preservatives.

• Korean Journal of Clinical Laboratory Science
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• v.53 no.1
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• pp.81-87
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• 2021

The prevalence of type 2 diabetes mellitus (T2DM) is increasing worldwide. T2DM is one of the most common types of diabetes and is caused by increased insulin resistance and reduced insulin secretion. Peroxisome proliferator-activated receptor γ coactivator 1 alpha (PPARGC1A) is a master modulator of mitochondrial biogenesis and of gluconeogenesis in liver. In this study, we analyzed genetic polymorphisms of PPARGC1A gene in a middle-aged Korean population with T2DM. Using the genotype data of 736 T2DM cases and 4544 healthy controls obtained from the Korean Association Resource (KARE), we analyzed genetic correlations between single nucleotide polymorphisms (SNPs) of PPARGC1A and T2DM. Fifteen SNPs of PPARGC1A demonstrated a statistically significant association with T2DM. Of these, rs10212638 exhibited the strongest correlation with T2DM (P-value=0.015, OR=1.29, CI=1.05~1.59), and the minor G allele of PPARGC1A increased the risk of T2DM. This is the first study to report a significant association between genetic polymorphisms in PPARGC1A and T2DM and suggests that SNPs of PPARGC1A display genetic correlations to the etiology of T2DM.