• International Journal of Advanced Culture Technology
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• v.9 no.2
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• pp.18-31
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• 2021

The purpose of the present study was to present evidence for driving interventions for the elderly by conducting programs that can improve visual perception and cognitive function in a driving simulator for elderly drivers and analyse their effects. Three elderly subjects who were 65 years or older, did not have physical and cognitive impairments, and were able to drive themselves participated in the present study. A total of 12 intervention sessions, of which subjects participated in 10 sessions of nine different visual perception and cognitive function programs available in a driving simulator, were conducted and pre- and post-program assessments were conducted (two assessments in total). The assessments included the evaluation of visual perception, frontal lobe function, concentration, safe driving behaviour, and self-efficacy. The results showed positive effects of the driving simulator program on the visual perception, frontal lobe function, concentration, safe driving behaviour, and self-efficacy of all subjects. Changes in the simulator results showed remarkable improvement in the response evaluation, judgment evaluation, and predictive power evaluation, but showed difficulties in interference tasks and depth perception in common. The results showed positive effects of driving simulator training on the driving ability of the elderly, and consistent provision of such training is expected to improve the quality of life of the elderly by securing the safety of driving and actively supporting social participation.

• Journal of the Korea Institute of Military Science and Technology
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• v.25 no.2
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• pp.210-217
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• 2022

Chemical warfare agents(CWA) such as nerve agents and vesicating agents show lethality by skin contamination. Skin protection, therefore, is one of the top priorities to deal with the growing threat from CWA. In an attempt to develop the most effective topical skin protectant(TSP), candidate substances including PFPE(perfluorinated polyether), PTFE(polytetrafluoroethylene), glycerin, and polysaccharides were evaluated in forms of various formulations against nerve agent simulant DMMP(dimethylmethyl phosphonate) penetration. The protective efficacy of the formulation against DMMP penetration was estimated as the onset time of color change of the KM9 chemical agent detection paper. Based on this study, it was found that several PFPE- and glycerin-based formulations exhibit remarkably superior efficacy as a protective cream. This protective cream is expected to be used as TSP for military application after further research.

• Journal of People, Plants, and Environment
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• v.23 no.4
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• pp.465-473
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• 2020

Background and objective: Aronia melanocarpa, called black chokeberry, is a natural product belonging to the family rosaceae, and is known to contain polyphenolic antioxidants including cyanidin-3-galactoside, cyanidin-3-arabinoside, cyanidin-3-xyloside, and cyanidin-3-glucoside Because of the abundance of anthocyanins, Aronia has been studied to be used in various industries. Methods: Aronia melanocarpa extract was treated 24 hours a day to RAW 264.7 cells with inflammations induced by LPS. After extracting total RNA, the amount of inflammatory cytokine expression was measured using RT-PCR. After processing the Aronia liposome using Aronia extract and the layer-by-layer electrostatic deposition method in keratinocyte cells at the same time, we checked the synthesis of Hyaluronic acid enhanced through the formation of Aronia liposome using ELISA. Results: The treatment of Aronia extract in inflammation-induced RAW 264.7 cells conducted to check the anti-inflammatory efficacy of Aronia extract inhibited inflammatory cytokines including TLR4, TNF-α, IL-1β, COX-2, and iNOS and increased the mRNA expression of HAS2 genes related to moisturizing. Based on the anti-inflammatory and moisturizing effect of Aronia extract, the Aronia liposome technology was introduced to Aronia extract to produce Aronia liposome. Conclusion: The liposome formation of Aronia extract is expected to be used as a functional material in treating various inflammatory skin diseases by controlling the moisture content of the corneocytes by increasing the expression rate of genes associated with the synthesis of hyaluronic acid, while retaining the efficacy of its components.

• Korean Circulation Journal
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• v.53 no.5
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• pp.273-293
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• 2023

Pulsed field ablation (PFA) was recently rediscovered as an emerging treatment modality for the ablation of cardiac arrhythmias. Ultra-short high voltage pulses are leading to irreversible electroporation of cardiac cells subsequently resulting in cell death. Current literature of PFA for pulmonary vein isolation (PVI) consistently reported excellent acute and long-term efficacy along with a very low adverse event rate. The undeniable benefit of the novel ablation technique is that cardiac cells are more susceptible to electrical fields whereas surrounding structures such as the pulmonary veins, the phrenic nerve or the esophagus are not, or if at all, minimally affected, which results in a favorable safety profile that is expected to be superior to the current standard of care without compromising efficacy. Nevertheless, the exact mechanisms of electroporation are not yet entirely understood on a cellular basis and pulsed electrical field protocols of different manufactures are not comparable among one another and require their own validation for each indication. Importantly, randomized controlled trials and comparative data to current standard of care modalities, such as radiofrequency- or cryoballoon ablation, are still missing. This review focuses on the "pearls" and "pitfalls" of PFA, a technology that has the potential to become the future leading energy source for PVI and beyond.

• Journal of Physiology & Pathology in Korean Medicine
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• v.23 no.1
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• pp.7-14
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• 2009

Bile juice prevents deposition of cholesterol in the blood vessel, digests fat, and absorbs fatty acid and vitamins, and it plays a great role on metabolism. Recently, emotional stimulus and mentally over-depression cause a person to come to illness, and westernization of way of life makes more patients with cholelithiasis, resulting into without bile secretion after cholelithotomy. Ageing, and gastrectomy and kidney transplantation are also the causes of more cholelithiasis occurrences. To solve these medical problems, we studied how Fel Sus Scrofa, which is not different from human bile juice, was used in the traditional Korean medicine. We I researched flavor, property, efficacy of Fel Sus Scrofa and how it was used by folk medicine, and we studied the usage examples of Fel Sus Scrofa in Sanghanlon and Dongeuibogam. The property of Sus Scrofa is bitter and cold. Its efficacy is to deposit glycogen. So it is known that it has been widely used, with many edible forms, without any humoral loss, for the inflammatory disease from various fever, problems of urine and feces, cutaneous disease, pulmonary disease, opthalmopathy, fever, thirst from diabetes, hepatocystic duct disorder. Fel Sus Scrofa can be used internally and externally to prevent humoral loss, and to control cutaneous disease among various pediatric disorder full of fever. And as we have in mind that it also can be used to treat patients with cholestasis after cholecystectomy, it is expected that post study of it must be done.

• Information Systems Review
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• v.12 no.1
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• pp.81-105
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• 2010

This research explores the role of personal performance expectation, task-technology fit, perceived rewards, shared vision, usefulness of knowledge sharing, top management support, organization culture, organizational commitment, KMS self-efficacy as antecedents which affect knowledge sharing activity as a consequence and investigates relationships among variables considering characteristics. The results show that members' perceived personal performance expectation, task-technology fit, perceived rewards, shared vision, usefulness of knowledge sharing, top management support, organization culture, organizational commitment, KMS self-efficacy has a positive effect perspectively on knowledge sharing in a organization. Especially, the fact that perceived members' task-technology fit, perceived rewards, usefulness of knowledge sharing is more important than other variables was confirmed. The results of this study, knowledge-sharing activities of the enterprise, members of the organization's business strategy for the activation process is expected to help.

• Journal of Acupuncture Research
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• v.30 no.5
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• pp.117-123
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• 2013

Objectives : The purpose is to review large-scale clinical researches, the acupuncture randomized trials(ART) and the acupuncture in routine care(ARC), concerning efficacy and effectiveness of acupuncture performed in Germany. Methods and Results : We have reviewed the studies that were searched by keyword 'acupuncture' as the title and'Witt CM' as one of the main authors in PubMed. Sixteen clinical reports focused on the ART and ARC studies were analyzed among all thirty six were searched. Six studies were related with the ART and eight were focused on the ARC, and other two were on both. Finally, across all researches except osteoarthritis of knee trials in the ART, compared the acupuncture group with the control were significantly improved. On the other hand, ARC showed that additional acupuncture plus routine care was more effective than routine care alone and the response to treatment of the non-randomized group did not differ the one of the randomized acupuncture group. Conclusions : The results may suggest that acupuncture treatment has obvious clinical effectiveness. These results are expected to inspire domestic research and clinical applications in Korea, and more rigorous research on the efficacy of acupuncture should be guaranteed.

• The Journal of the Korea Contents Association
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• v.14 no.2
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• pp.396-408
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• 2014

The purpose of this study is to examine the effect of the psychiatric nursing simulation practicum, which was developed for the therapeutic relationship forming and communication, psychiatric nursing assessment training utilizing simulated patients, on self-directed learning, learning self-efficacy and learning satisfaction. As a one group pre-test and post-test design, this test conducted 8 hours of intervention on 119 senior nursing students as study subjects. As a result, self-directed learning and learning self-efficacy were seen to be significantly improved after the program compared to before the program, and these variables displayed a moderate-level static correlation with learning satisfaction. These results can be deemed representative of the fact that, concerning psychiatric nursing practicum, a simulation teaching using simulated patients is effective. The results of this study are expected to contribute to improving field-centered psychiatric nursing practicum and the quality of psychiatric clinical work.

• Journal of Digital Convergence
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• v.16 no.4
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• pp.259-265
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• 2018

This study investigates convergent factors associated with occupational stress among General Hospital Administrative Staff(GHAS). The survey was administered to 221 staffs from 11 general hospitals located in J city from November 1st, 2016 to January 31st, 2017, using structured self-administered questionaries without respondents' personal information. The hierarchical multiple regression analysis shows the following results. The occupational stress of respondents turned out to be significantly higher in following groups: a group in which organizational justice-distributive is lower, a group in which self-esteem is lower, a group in which self-efficacy is lower. The results show explanatory power of 39.5%. The results of the study indicate that the efforts, to increase organizational justice-distributive, to increase self-esteem, to increase self- efficacy, are required to decrease the occupational stress among GHAS. These results are expected to be utilized for organizational and personnel management to reduce occupational stress in GHAS. In the following study, the research of additional factors and the analysis of structural equation model about the occupational stress among GHAS will be needed.

• Journal of Digital Convergence
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• v.16 no.6
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• pp.117-126
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• 2018

This study investigated the antecedents of VR(virtual reality) headsets acceptance and the causal relationships among self-efficacy, content diversity, the perceived usefulness, the perceived easy of use, the perceived playfulness and the adoption intention. We collected 238 survey responses and formed structural equation modeling with AMOS 23.0. The results of the analysis can be summarized as follows. The diversity of contents and self-efficacy had significant effects on perceived usefulness, perceived ease of use and perceived enjoyment, thus increasing the intention of acceptance. Perceived usefulness, perceived ease of use and perceived enjoyment had significant effects on the intention of acceptance. Perceived ease of use indirectly had an effect through increasing perceived enjoyment. The price did not affect the adoption intention and marketing communication increased the intention of acceptance. The results are expected to provide useful information to the companies related to VR.