https://oak.chosun.ac.kr/handle/2020.oak/18789 Thu, 09 Apr 2026 21:57:16 GMT 2026-04-09T21:57:16Z https://oak.chosun.ac.kr/handle/2020.oak/18800 Title: Fabrication of Antimicrobial Wound Dressings Using Silver-Citrate Nanorods and Analysis of Their Wound-Healing Efficacy Author(s): Yong Jin Park; Jisu Jeong; Jae Seok Kim; Dong Soo Choi; Goang-Won Cho; Jin Seong Park; Jong Kuk Lim Abstract: Staphylococcus epidermidis is well-known not only as an innocuous normal flora species commonly isolated from human skin, but also as an important bacterial species to keep skin healthy, because this species can protect the human skin from pathogenic microorganisms. However, S. epidermidis turns into a potential pathogen in damaged skin, because these bacteria can easily form a biofilm on the wound area and provide antimicrobial resistance to other microorganisms embedded in the biofilm. Thus, it is important to kill S. epidermidis in the early stage of wound treatment and block the formation of biofilms in advance. In the present study, hydrogel wound dressings were fabricated using polyvinyl alcohol/ polyethylene glycol containing silver citrate nanorods, which have been proven to have strong antimicrobial activity, especially against S. epidermidis, and their wound-healing efficacy was investigated in vivo using a rat experiment. Mon, 31 Dec 2018 15:00:00 GMT https://oak.chosun.ac.kr/handle/2020.oak/18800 2018-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/18801 Title: Effects of a Critical Thinking Course for Korean Nurses in RN-BSN Program Author(s): Nam-Joo Je; Shin-Young Lee; Seonah Lee Abstract: Critical thinking is essential to implementing the nursing process requiring timely decision making. The study examined the effects of a critical thinking course for nurses in the RN-BSN program. The study used a pre- and post-test design with a control group. The experimental group was a convenience sample of 24 working nurses attending a health college. The control group was 24 fellow nurses. The nursing process-based critical thinking course was provided to the experimental group two and half hours a week for 8 weeks. Teaching methods included lectures followed by a summary and quiz, brainstorming and action learning, and lecturer feedback. A pamphlet about views of professional occupation was provided to the control group. The data were collected using self-report questionnaires and analyzed to examine differences in the test scores before and after the intervention. The scores of critical thinking disposition, problem-solving process, and clinical competence increased significantly in the experimental group but did not in the control group. The difference between the two groups was also statistically significant in critical thinking disposition, problem-solving process, and clinical competence. It is necessary that a robust educational program or training to enhance critical thinking ability of nurses are provided in clinical settings and that nurses keep going on thinking critically in their practice. Mon, 31 Dec 2018 15:00:00 GMT https://oak.chosun.ac.kr/handle/2020.oak/18801 2018-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/18798 Title: Robust Similarity Retrieval for Radial Distortion of Object Shape Based on the Normalized Phase Angles and Moment Author(s): Young Eun An; Tae Yeun Kim Abstract: In the content-based image search properties, form information is simple because only the contours of objects are available, and although it can effectively extract the characteristics of the objects, it is sensitive to external noise. The radial distortion, one of these noises, is most prominent in the eyewear and, due to the structural characteristics of the imaging equipment, radiative distortion occurs in almost all imaging equipment. It is very important to determine the similarity of the objects in the images in which these distortions occurred to the actual objects. In order to improve this problem, we propose a strong image search technique for formative noise and radiative distortion using regularization phase angles and moments. Through simulation using Wang DB, the proposed algorithm proved excellent performance for radiation distortion that occurs in general. In addition, a system optimized for database can be implemented by making appropriate changes to the threshold values, enabling image retrieval with the desired level of confidence in various systems. The algorithm proposed in this paper is expected to be utilized as an optimal imaging system by extracting morphological form information of multimedia data. Mon, 31 Dec 2018 15:00:00 GMT https://oak.chosun.ac.kr/handle/2020.oak/18798 2018-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/18799 Title: A Ratio Variation of Nicomachus's Theorem Author(s): Seon-Hong Kim Abstract: In this paper, we study a ratio variation of Nicomachus' theorem by computing ${\sum\limits_{k=1}^{n}}[rk]$ and ${\sum\limits_{k=1}^{n}}[rk]^3$, where r is a rational number. Mon, 31 Dec 2018 15:00:00 GMT https://oak.chosun.ac.kr/handle/2020.oak/18799 2018-12-31T15:00:00Z