• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.126-136
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• 2018

The purpose of this study was to develop a severity-adjustment model for predicting mortality in acute stroke patients using machine learning. Using the Korean National Hospital Discharge In-depth Injury Survey from 2006 to 2015, the study population with disease code I60-I63 (KCD 7) were extracted for further analysis. Three tools were used for the severity-adjustment of comorbidity: the Charlson Comorbidity Index (CCI), the Elixhauser comorbidity index (ECI), and the Clinical Classification Software (CCS). The severity-adjustment models for mortality prediction in patients with acute stroke were developed using logistic regression, decision tree, neural network, and support vector machine methods. The most common comorbid disease in stroke patients were hypertension, uncomplicated (43.8%) in the ECI, and essential hypertension (43.9%) in the CCS. Among the CCI, ECI, and CCS, CCS had the highest AUC value. CCS was confirmed as the best severity correction tool. In addition, the AUC values for variables of CCS including main diagnosis, gender, age, hospitalization route, and existence of surgery were 0.808 for the logistic regression analysis, 0.785 for the decision tree, 0.809 for the neural network and 0.830 for the support vector machine. Therefore, the best predictive power was achieved by the support vector machine technique. The results of this study can be used in the establishment of health policy in the future.

• Journal of Digital Convergence
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• v.16 no.11
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• pp.419-432
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• 2018

The purpose of this study is to develop a hospice intervention program and present basic study data using a method of Meta analysis. Fifteen theses from 2002 to 2017 were collected from the on-line database at Korean Education and Research Information Service and other journals related hospice. Main keywords were 'hospice' and intervention'. The selected 15 theses were analyzed with publication bias, outcome of effect size, non-overlap percentage(U3), 95% confidence intervals and homogeneity. The result of the study is summarized as follows; Publication bias was stable and the effect size of hospice program was significant at. 99. The effective and significant regulation effects were publication years with 2003 to 2007(ES=1.24), publication types with journals(ES=1.33), majors with nursing sciences(ES=1.02), ages with 29 to 30(ES=1.09), later session(ES=1.06) and aroma(ES=1.12). Accordingly, this thesis has its meaning in that it used a Meta-analysis to analyze domestic theses of hospice intervention programs for the first time in Korea. This thesis will prodide specific guidance to researchers trying to develop and utilize hospice intervention programs resulting in helpful usages in professional hospice institutions with implementations of programs.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.505-510
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• 2018

This study aimed to compare the elimination effect of dental plaque between general toothbrushes and chewing toothbrushes, so as to investigate whether the chewing toothbrushes have the practicality as the alternatives of general toothbrushes and their utilities in the real life. The study subjects were 30 healthy adults in their 20s who maintained the good dental condition over 16 teeth without systemic diseases, and the decline rates of dental plaque index after usages of general and chewing toothbrushes were calculated. Upon the comparisons of dental plaque decline rates before and after the usages of general and chewing toothbrushes, PHI index was declined from 7.02 to 1.91 in case of the general toothbrush demonstrating dental plaque decline by 72.79%, while it was declined from 6.72 to 4.08 in the chewing toothbrush demonstrating decline by 39.29%. Currently, a variety of dental care items are available in the Korean market, hence, various studies are required on the dental care items so as for the people to properly choose the items.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.511-521
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• 2018

The purpose of this study was to investigate the effect of critical thinking, clinical decision making ability, patient safety knowledge and attitude ability to perform patient safety activities during clinical practice on nursing student's. Data were analyzed using t-tests and one-way ANOVA using the SPSS 21.0 program. As a result, the subjects' safety nursing activities was positively correlated critical thinking disposition(r=.278, p=.001), clinical decision making ability(r=.202, p=.014), patient safety attitude(r=.421, p<.001).The significant predictors of perform safety nursing activities were gender(${\beta}=.175$, p=.031), patient safety education(${\beta}=-2.266$, p=.025), critical thinking disposition(${\beta}=3.354$, p=.001), patient safety attitude(${\beta}=.368$, p<.001). These factors explained 31.5% of the variance(R2=.561, F=4.56 p<.001). It is necessary to establish a curriculum for critical thinking disposition, clinical decision making ability, and patient safety education in order to improve patient safety performance necessary for clinical practice education of nursing college students.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.541-553
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• 2018

The purpose of this study was to analyze the differences in the frequency and importance of basic nursing practice between comprehensive nursing care service wards and general wards and to provide basic data for the efficient of services. The subjects of this study were 99 comprehensive nursing care service and 90 general wards. Data were collected from February 1 to 28, 2018 and analyzed using a t-test, one-way ANOVA, Pearson's correlation coefficient, Scheffe test. The results showed that the frequency of basic nursing practice was higher by 2.43, and there were significant differences in personal hygiene, nutrition and excretion, exercise & activity. The recognition of the importance of basic nursing was high in both groups, but comprehensive nursing care service wards were slightly higher at 4.24 points. However, as the frequency of practice is lower than the recognition of the importance of basic nursing, a method to increase the frequency of practice is necessary. These results suggest that comprehensive nursing care service wards should provide appropriate nursing staff and system development so the nurses can provide care service as professionals.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.489-503
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• 2018

The purpose of this study was to explore traumatic experiences and posttraumatic growth of nursing students who were in clinical training. The data were collected from 490 nursing students at four nursing colleges with clinical training experience more than 1 year, from November 20th 2017 to December 20th. Collected data were analyzed through t-test, ANOVA, and $Scheff{\acute{e}}$ test with the SPSS/WIN 25.0 program, and qualitative data were analyzed by content analysis. 26.5% of the subjects had traumatic experiences in their daily life, 61.2% in the clinical practice. Their posttraumatic growth was scored 2.63 out of 5 on average. The contents of traumatic experiences were 'Violence experienced by medical staff','Negative perception of nursing care','Non-Educational Practical Environment' Clinical practice in a harsh environment, Witness of a serious patient, et al. The findings can be used as important basic data for the development of nursing practice education program for encouraging the posttraumatic growth of nursing students.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.359-371
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• 2018

The aim of this study was to investigate experience and education needs on medication and emergency situations for young children of child caregivers. The data from 190 caregivers were collected using open-ended questionnaires composed of four items and analysed by content analysis. The categories derived for each theme were as follows: experience of medication of six categories(no referral for medication, young children refused medication, inaccurate referral, a variety of medication, sick children but not having medication), education need of four categories(for child caregivers, for parents, for children, guideline required), experience of emergency situation of six categories(skin damage or bleeding, decreased consciousness due to seizures, high fever persisted, asphyxiation due to foreign body, dislocation or fracture, emergency not knowing how to cope), education need of emergency situation of five categories(contents, methods, cycle, necessity, institutionalization). It is required to improve more practically the education contents and methods related to medication and emergency situation of child caregivers.

• Journal of Navigation and Port Research
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• v.43 no.3
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• pp.153-159
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• 2019

Marine accidents and legal violations result from mistakes and negligences of ship officers, deck officers and engine officers, during the ship navigation and lay days. Due to these accidents and violations, these officers are subjected to disciplinary actions for certification. The disciplinary action, namely certificate punishment is carried out by right rules, processes and equity. However, it is revealed that present situations are different from the principles. For the purpose of finding current states relating to certificate punishment, this study examines and analyses 737 punishment cases, accomplished in 'B' regional office of oceans & fisheries for 5 years from 2014 to 2018. The contents to be analyzed are reprimand agencies, certificate kinds, officers ranks at that time, disciplinary level, violated acts, annual reprimand state, punishment rule and it process, and disciplinary reduction levels. From such valuations various problems, such as disciplinary level deviations among laws, insufficient punishments rules, disciplinary certificate deviation, insufficient reprimand reduction rules, and lack function of crew administrative disciplinary council, are identified. Finally, methods to alleviate the problems identified will be proposed. This study, for the first time analyses the actual administrative disciplinary cases for ship officers'certificates and proposes improvement plans for its incorporation in Korea, This analysis will be useful in the examination of the study for the ship officers and making a plan for them.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.10-23
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• 2019

Although social big data can provide a multi-faceted perspective on school bullying experiences among children and adolescents, the complexity and variety of unstructured text presents a challenge for systematic collection and analysis of the data. Development of an ontology, which identifies key terms and their intricate relationships, is crucial for extracting key concepts and effectively collecting data. The current study elaborated on the definition of an ontology, carefully described the 7 stage development process, and applied the ontology for collecting and analyzing school bullying social big data. As a result, approximately 2,400 key terms were extracted in top-, middle-, and lower-level categories, concerning domains of participants, causes, types, location, region, and intervention. The study contributes to the literature by explaining the ontology development process and proposing a novel alternative research model that uses social big data in school bullying research. Findings from this ontology study may provide a basis for social big data research. Practical implications of this study lie in not only helping to understand the experience of school bullying participants, but also in offering a macro perspective on school bullying as a social phenomenon.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.271-278
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• 2019

The aim of this study was to investigate the effects of virtual reality training on upper extremity function and activities of daily living in patients with sub-acute stroke. The present study enrolled 18 patients with sub-acute stroke. All subjects were assigned into either the experimental group (n=9) or control group (n=9). Both groups received conventional occupational therapy for 30 minutes/day, 5 times a week, for 4 weeks. Additionally, the experimental group performed virtual reality training in each session for 30 minutes/day, and the control group conducted conventional occupational therapy in each session for 30 minutes/day. The outcome measures were performed through the Fugl-Meyer Assessment (FMA) and the Korean-modified Barthel Index (K-MBI) before and after intervention. In results, the experimental group showed significant improvements in the scores of FMA and K-MBI after intervention (p<.05). The control group showed significant improvements in the shoulder/elbow/forearm, wrist, and hand sub-domains of the FMA and K-MBI (p<.05). After intervention, the experimental group showed significantly greater improvements in the total score and in the wrist and hand sub-domains of the FMA than control group (p<.05). These findings suggest that virtual reality training may have positive effects on the improvements of upper extremity function in patients with sub-acute stroke.