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        검색결과 34

        1.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper presents a study on the design and implementation of a secure contactless system leveraging Quick Response (QR) codes as a core component. The main goal of this system is to bridge the gap between strong security and improved user experience within the realm of digital interaction. The system's versatility can be expanded with broad compatibility with a variety of applications. Utility can be expanded to areas such as contactless payments, electronic ticketing, secure identity verification, and convenient access to medical records. The international standardization of QR codes ensures seamless cross-platform compatibility, strengthening their role in the digital ecosystem. We actually create and develop a non-contact security QR code system and check the expandability of the system. This study highlights the pivotal role of QR codes within the realm of secure contactless systems. Through its effective balance of digital security and user convenience, QR codes are emerging as an important element in the continued development of a secure and user-friendly digital environment. The potential for future research lies in exploring more complex use cases and further advancements that improve both security and user-centered design.
        4,000원
        3.
        2019.03 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        The incidence of stomach cancer has been found to be gradually decreasing; however, it remains one of the most frequently occurring malignant cancers in Korea. According to statistics of 2017, stomach cancer is the top cancer in men and the fourth most important cancer in women, necessitating methods for its early detection and treatment. Considerable research in the field of bioinformatics has been conducted in cancer studies, and bioinformatics approaches might help develop methods and models for its early prediction. We aimed to develop a classification method based on deep learning and demonstrate its application to gene expression data obtained from patients with stomach cancer. Data of 60,483 genes from 334 patients with stomach cancer in The Cancer Genome Atlas were evaluated by principal component analysis, heatmaps, and the convolutional neural network (CNN) algorithm. We combined the RNA-seq gene expression data with clinical data, searched candidate genes, and analyzed them using the CNN deep learning algorithm. We performed learning using the sample type and vital status of patients with stomach cancer and verified the results. We obtained an accuracy of 95.96% for sample type and 50.51% for vital status. Despite overfitting owing to the limited number of patients, relatively accurate results for sample type were obtained. This approach can be used to predict the prognosis of stomach cancer, which has many types and underlying causes.
        4,000원
        6.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was designed to optimize ethanol extraction process of unfertilized corn silk (UCS) to maximize phytochemical contents and bioactivities. The response surface methodology (RSM) with central composite design (CCD) was employed to obtain the optimal extraction conditions. The influence of ethanol concentration, extraction temperature and extraction time on total polyphenol contents, total flavonoid contents, maysin contents, 2,2-diphenyl-1- picrylhydrazyl(DPPH) radical scavenging activities and tyrosinase inhibition were analyzed. For all dependable variables, the most significant factor was ethanol concentration followed by extraction temperature and extraction time. The following optimum conditions were determined by simultaneous optimization of several responses with the Derringer’s desirability function using the numerical optimization function of the Design-Expert program: ethanol concentration 80.45%, extraction temperature 53.49°C, and extraction time 4.95 h. Under these conditions, the predicted values of total polyphenol contents, total flavonoid contents, maysin contents, DPPH radical scavenging activity and tyrosinase inhibition were 2758.74 μg GAE/g dried sample, 1520.81 μg QUE/g dried sample, 810.26 mg/100g dried sample, 56.86% and 43.49%, respectively, and the overall desirability (D) was 0.74.
        4,200원
        7.
        2017.09 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        Recently, N-terminal pro-brain natriuretic peptide (NTproBNP) has been widely used in the areas of diagnosis, monitoring treatment efficiency, and prognosis for various heart diseases, especially heart failure (HF). In this paper, we try to estimate the prognostic significance of NT-proBNP as a risk evaluation marker in Non-ST-segment Elevation Myocardial Infarction (NSTEMI) patients. We selected NSTEMI patients who underwent percutaneous coronary intervention (PCI) primarily using a drug-eluting stent within 24 h after the onset of chest pain. We compared incidences of major adverse cardiac events (MACE) including death, myocardial infarction (MI), stent thrombosis (ST), and target vessel revascularization (TVR) in two patient groups according to a high or low serum concentration of NT-proBNP, which was measured in the emergency room (ER). We intend to minimize selection bias selecting comparing groups, considering covariate of observed variables together using propensity score matching (PSM) and propensity score weighting (PSW) based on propensity score (PS) to control the difference in baseline characteristics between high- and low NT-proBNP groups. We found that as the log NT-proBNP value increases by 1 through a hazard function of COX’s analysis, the risk of MACE increases by 1.312 times. This result indicated that the NT-proBNP level on ER admission can be used as a significant prognostic indicator to estimate 1 year of MACE in NSTEMI patients who were treated with PCI within 24 h after the onset of chest pain.
        4,000원
        11.
        2014.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study aims to identify the effect of home physical therapy on patients who left the hospital after total knee arthroplasty, compared to the Daily living group, when it was applied to them, under the guidance of physical therapists. As research subjects, 20 patients that were scheduled to leave the hospital after unilateral total knee arthroplasty, were chosen, and they were randomly divided into a home physical therapy group(10 patients) and an Daily living group(10 patients) in order to conduct an experiment. During the 4-week research, home physical therapy was offered for 40 mins once for 5 days a week, and muscular strength, gait components were measured. For muscular strength, quadriceps muscle strength, hamstring muscle strength were measured, and as gait components, endurance, speed, step time, single-limb support were analysed. For this experiment, pre- and post-measurement were performed, and collected data were analyzed using SPSS ver. 18.0 statistical program. From the analysis of data, the following study results were obtained. Home physical therapy group and Daily living group both showed significant improvements in quadriceps muscle strength, hamstring muscle strength, and quadriceps muscle strength, hamstring muscle strength of home physical therapy group more significantly improved than Daily living group's. In relation to gait components, gait endurance, gait speed, step time significantly improved in both of home physical therapy group and Daily living group, whereas home physical therapy group only showed significant improvements in single-limp support. According to the comparison between two groups, gait speed, single-limp support and step time improved more significantly in the home physical therapy group than in the Daily living group. In conclusion, positive results were revealed in both home physical therapy group and Daily living group, with regard to muscular recovery of lower limbs of patients discharged from the hospital after total knee arthroplasty and walking, but considering the comparison results between two groups, it seems that applying home physical therapy is more effective than maintaining a daily life.
        4,000원
        12.
        2013.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        절화용 스탠다드 국화 ‘백설’의 전처리제 효과에 대한 연구에서1-MCP 0.5g·m-3 처리구가 대조구에 비해 2일 정도 꽃봉오리의꽃잎착색과 조기개화가 지연되었으며 개화 정도도 9일 까지 개화를지연시켜 품질선도를 유지시킬 수 있었다. Promalin(GA4+7+BA)100mg·L-1과 500mg·L-1 처리구에서도 개화지연 효과가 나타났으나,500mg·L-1 이상의 고농도에서는 잎과 꽃의 조기 위조현상을 나타내었다. 또한 생체중의 변화에서도 1-MCP 0.5g·m-3, 1.0g·m-3 및Promalin(GA4+7+BA) 100mg·L-1 처리구에서 대조구에 비해 현저히 증가되었다. 이상의 결과로 고찰해보면 1-MCP 0.5g·m-3와Promalin(GA4+7+BA) 100mg·L-1 처리는 절화 국화 ‘백설’의 수확 후 꽃봉오리 화색변화 및 조기개화를 억제시켜 품질 선도유지에매우 효과적임을 알 수 있었다.
        3,000원
        13.
        2013.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Experts of medicine, philosophy and psychology found that human somatotypes were related to personality or physical characteristics and classified somatotypes into various forms. This study explored the changes and types of somatotyping methods from Before Christ to present day and identified the status of studies of somatotypes in the area of physical therapy. This study covered the methods applied in various majors with a focus on those provided in books and papers of Heath BH. and Carter JEL. Based on the results, there are officially twelve assessment methods. Currently, the method of Heath & Carter is most widely applied. Somatotypes are studied in many areas. It is actively explored in the area of pain physical therapy, thermotherapy and integumentary physical therapy. Also, the soft tissue physical therapy area seeks interdisciplinary studies. This study found that there were various assessment methods in diverse areas. It is likely that continuous studies will develop new assessment methods. It is hoped that in the area of physical therapy, somatotypes shall be applied more amply.
        4,000원
        14.
        2012.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 절화 국화 ‘백마’의 수확 후 몇가지 포 장재 처리가 선도유지 및 품질에 미치는 영향을 알아 보기 위하여 수행되었다. 개화단계의 결과, PE필름 처 리구에서 대조구에 비해 6일째 개화가 25% 지연되는 결과를 나타내었다. 꽃크기 변화의 경우 기능성 한지 포장재 처리구에서 대조구에 비해 실험 6일째 꽃의 직 경 변화 속도가 19% 지연되는 결과를 나타내었다. 화 색변화의 경우 기능성 한지 포장재(I, II, III) 처리구 모두 대조구에 비해 2일 정도 화색변화가 지연되는 결과를 나타내었다. 생체중 변화의 경우 신문지, PE 필 름, 기능성 한지 포장재(I, II, III) 모두 대조구에 비 해서 높은 수분흡수량을 나타내었다. 특히, 포장재 II 는 절화 국화 ‘백마’의 선도유지에 관련된 품질요인인 개화단계, 꽃크기, 화색변화, 생체중, 에틸렌 발생량에 긍정적으로 작용함을 알 수 있다.
        4,000원
        15.
        2012.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to examine the degree of knowledge of care workers working at long term care hospitals and nursing homes on pressure ulcer. A total of 81 care workers including 34 at long term care hospitals and 47 at nursing homes were surveyed. 24 questions were used to evaluate their degree of knowledge on pressure ulcer. Their knowledge on pressure ulcer scored 12.84 out of the total score of 24 points(SD=3.40), which was equal to 53.50 (SD=24.23) out of 100 points. Their knowledge on the prevention of pressure ulcer was highest among the subareas of evaluation. Their knowledge on pressure ulcer statistically significantly differed according to education on pressure ulcer(P<.05). A pressure ulcer is a skin disorder that may be prevented and cured. At this point when long term care facilities are rapidly increasing, care workers highlevel knowledge on and good management of pressure ulcer is very important. Practically educating them on pressure ulcer including the provision of recent, updated relevant knowledge will be necessary.
        4,000원
        16.
        2011.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        절화 국화 ‘백마’의 수확 후 수송조건 및 생장조절제 처리가 선도유지 및 품질에 미치는 영향을 알아보기 위하여 절화 국화 ‘백마’를 공시재료로 사용하였다. 수 송조건 실험 결과 저장온도에 따른 절화 품질은 5oC 저 온 저장시 상온(대조구)저장과 20oC 저장 보다 효과적 임을 확인하였다. 또한 수송방법에 따른 절화 품질은 물올림 처리 후 수직 수송방법이 다른 처리구에 비하여 우수한 효과를 나타내었다. 특히 생장조절제 uniconazole 10 mg/L−1 문무 처리는 개화를 지연시켜 선도를 유지 시켰으며 daminozide 1,000배 분무 처리는 꽃목 굽음을 지연시켜 절화 국화 품질 유지에 우수한 결과를 나타 내었다.
        4,000원
        17.
        2011.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to investigate the influence of handicraft activities on hand promptness and grasp in the elderly. Subjects were comprised of 14 senior citizens between the ages of 70-85, with 7 subjects in the experiment group and 7 in the control group. Subjects in the experiment group practiced various handicrafts twice a day, while those in the control group did not participate in any special activity. The Jebsen Taylor Hand Function Test was used to evaluate the results, while a dynamometer and pinch gauge were used to measure hand promptness and grasp. The 7 senior citizens in the experiment group were able to increase their hand promptness and grasping skills. Conclusively, handicrafts can help improve hand promptness and grasp in the elderly. Furthermore, the development and improvement of such skills can have a positive influence on the daily lives of senior citizens. Such skills are expected to improve the overall neuro-function in the elderly population.
        4,000원
        18.
        2010.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The majority of strokes are caused by ischemia and result in brain tissue damage, leading to problems of the central nervous system including hemiparesis, dysfunction of language and consciousness, and dysfunction of perception. The purpose of this study was to investigate the effects of Poly(ADP-ribose) polymerase(PARP) on necrosis in neuronal cells that have undergone needle electrode electrical stimulation(NEES) prior to induction of ischemia. Ischemia was induced in male SD rats(body weight 300g) by occlusion of the common carotid artery for 5 min, after which the blood was reperfused. After induction of brain ischemia, NEES was applied to Zusanli(ST 36), at 12, 24 and 48 hours. Protein expression was investigated using immuno-reactive cells, which react to PARP antibodies in cerebral nerve cells, and Western blotting. The results were as follows: In the cerebral cortex, the number of PARP reactive cells after 24 hours significantly decreased(p<.05) in the NEES group compared to the GI group. PARP expression after 24 hours significantly decreased(p<.05) in the NEES group compared to the GI group. As a result, NEES showed the greatest effect on necrosis- related PARP immuno-reactive cells 24 hours after ischemia, indicating necrosis inhibition, blocking of neural cell death, and protection of neural cells. Based on the results of this study, NEES can be an effective method of treating dysfunction and improving function of neuronal cells in brain damage caused by ischemia.
        4,000원
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