http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
가동코일 및 DC 모터로 작동되는 유연 빔의 끝점 제어
유화준,남윤수 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B
In a modern control field, a control engineer who has theoretical backgrounds with some practical knowledge is demanded. That is to say, an engineer who can understand and operate the various pals such as modeling, simulation, system analysis, signal processing, statistics, and hardware is required. In order to prove the theoretical backgrounds and operate various hardwares, a lot of experimental devices for students are designed in universities. Since the conventional experimental devices are manufactured abroad and the prices of the devices are too high, it is difficult to have. If a low cost experimental device can be developed, it will be very useful for a control engineering education. In this paper, an experimental rig which has two control inputs and three sensor outputs to control the end point of a flexible beam is designed and manufactured. This rig can be used for a control field education.
개인주의-집단주의 및 귀인양식이 대학생의 전문적 도움추구태도에 미치는 영향
성수진,유순화 부산대학교 과학교육연구소 2006 교사교육연구 Vol.45 No.-
The purpose of this study was to examine the influence of individualism-collectivism(horizontal individualism, horizontal collectivism, vertical individualism, vertical collectivism) and causal attribution style on college students’ attitudes toward seeking professional help in Korea. Three hundred and eleven college students(197 men and 114 women) participated in this research. Each participant responded to three instruments; The Attitude Toward Seeking Professional Help Scale, The Individualism-Collectivism Scale, Attributional Style Questionnaire. To analyze the data, correlation analysis and stepwise regression analysis were conducted. The result of correlation analysis indicated that attribution style, horizontal individualism and horizontal collectivism were positively correlated to attitudes toward seeking professional help, and vertical individualism was negatively correlated to attitudes toward seeking professional help. The result of stepwise regression analysis indicated that the horizontal individualism, horizontal collectivism and vertical individualism had significant influence on attitudes toward seeking professional help. Causal attribution style didn't have significant influence on attitudes toward seeking professional help.
자기주권 신원증명 기반 스마트 계약 구현을 위한 자격증명 시스템 제안
유수민(Su-Min Yoo),유수빈(Soo-Bin Yoo),조정화(Jung-Hwa Jo),손애선(Ae-Seon Son) 한국정보기술학회 2020 한국정보기술학회논문지 Vol.18 No.12
Modern society has introduced a public key infrastructure that verifies the proof of data senders while ensuring data leakage on the Internet, providing digital certificate technology based on symmetric and asymmetric key encryption for safe data exchange and identity authentication online. But CAof security is fragile, CA of all users using digital certificates are also vulnerable, and also in a data breach. There is a secondary damage that can be caused by information leaked. In order to prevent damage caused by digital certificates and key leaks, this paper proposes a system to ensure the integrity of data by using the distributed ledger environment, the Block chain, and secure the security to exchange the open key safely in a decentralized structure using the open key of the DID (Decentralized Identifier) Document registered in the block chain.
Real-time PCR과 Colony forming unit법을 이용한 타액 내 2종의 구강미생물 총량분석
유수민 ( Su-min Yoo ),정성국 ( Seong-kug Jeong ),유현준 ( Hyun-jun Yoo ),장종화 ( Jong-hwa Jang ) 한국치위생학회(구 한국치위생교육학회) 2017 한국치위생학회지 Vol.17 No.1
Objectives: The purpose of this study was to compare colony forming unit (CFU) method and multiplex real-time polymerase chain reaction (MRT-PCR) method for accurate quantitative analysis of bacteria. Methods: We compared the CFU method and the MRT-PCR method, which are still used in Korea, for Prevotella intermedius (P. intermedius), a periodontal disease pathogen selected by MRT-PCR, and Streptococcus mutans (S. mutans), a dental caries causative organism. The subjects of this study were 30 patients who visited the C dental hospital. Results: Total microorganisms in MRT-PCR method were significantly higher in both types of bacteria (p<0.05), since DNA of dead bacteria was also analyzed. This was because the periodontal dise(-) anaerobes, and even dead bacteria contain large amounts of toxic substances called LPS in the extracellular membrane, and fimbriae and pili, which are motility structures, still remain as a strong toxic substance in periodontal tissue. Conclusions: Therefore, in terms of the total amount of bacteria found, the MRT-PCR method will be a useful technique for searching all the bacteria in the oral cavity including live bacteria, as well as sterilization.
Soo-Yoon Sung(Soo-Yoon Sung),Jin Ho Song(Jin Ho Song),Byoung Hyuck Kim(Byoung Hyuck Kim),Yoo-Kang Kwak(Yoo-Kang Kwak),Kyung Su Kim(Kyung Su Kim),Gyu Sang Yoo(Gyu Sang Yoo),Hwa Kyung Byun(Hwa Kyung Byu 대한방사선종양학회 2024 Radiation Oncology Journal Vol.42 No.1
Advances in radiotherapy (RT) techniques, including intensity-modulated RT and image-guided RT, have allowed hypofractionation, increasing the fraction size over the conventional dose of 1.8–2.0 Gy. Hypofractionation offers advantages such as shorter treatment times, improved compliance, and under specific conditions, particularly in tumors with a low α/β ratio, higher efficacy. It was initially explored for use in RT for prostate cancer and adjuvant RT for breast cancer, and its application has been extended to various other malignancies. Hypofractionated RT (HFRT) may also be effective in patients who are unable to undergo conventional treatment owing to poor performance status, comorbidities, or old age. The treatment of brain tumors with HFRT is relatively common because brain stereotactic radiosurgery has been performed for over two decades. However, re-irradiation of recurrent lesions and treatment of elderly or frail patients are areas under investigation. HFRT for head and neck cancer has not been widely used because of concerns regarding late toxicity. Thus, we aimed to provide a comprehensive summary of the current evidence for HFRT for brain tumors and head and neck cancer and to offer practical recommendations to clinicians faced with the challenge of choosing new treatment options.
Yoo, Su-Min Cho, Ja-Won Hwang, Kyung-Sook Kim, Chan-Ho Chae, Sang-Kun, Sung, Young-Eun Lee, John-Hwa International Journal of Clinical Preventive Denti 2011 International Journal of Clinical Preventive Denti Vol.7 No.1
Objective: The aim of this study was to ascertain the effects on oral environment improvement including the control of dental plaque, the prevention of gingivitis and the repression of oral malodor using dentifrice mixed with hydrated silica, sodium monofluorophosphate, green tea extract and cetylpyridinium chloride. Methods: The experiment was conducted of 95 of Korean male and female adult volunteers using by double blind method. Before the experiment started, the subjects removed their tartar mechanically to make the oral conditions of all subjects same. After 2 weeks for no residual effect, the oral environmental index was measured as baseline value. For 3 months, the subjects were instructed to use dentifrice experimented and the effect of hydrated silica, sodium monofluorophosphate, green tea extract and cetylpyridinium chloride was analyzed comparing experiment group 1 and 2 with control group. Results: The changes of gingivitis and plaque index of 2 experiment groups, which is to figure out the improvement of gingivitis, were significantly different compared to that of control group (p<0.05). Changes of oral malodor of 2 experiment groups were significantly different compared to that of control group (p<0.05). After 3 months freshness of 2experiment groups were significantly different compared to that of control group (p<0.05). The experiment group had freshness at about 7.83, experiment group 1 at about 7.97 while the control group at about 3.15. Conclusion: The most effective improvement especially shown on the oral conditions were dentifrice that contains.
Yoo, Jae Il,Choi, Chi Won,Kim, Hwa Su,Yoo, Jung Sik,Jeong, Young Hee,Lee, Yeong Seon Korea Centers for Disease Control and Prevention 2012 Osong Public Health and Research Persptectives Vol.3 No.2
<P><B>Objectives</B></P><P><I>Candida glabrata</I> is one of the most common causes of <I>Candida</I> bloodstream infections worldwide. Some isolates of <I>C glabrata </I>may be intermediately resistant to azoles, with some strains developing resistance during therapy or prophylaxis with fluconazole. In this study, we used a proteomic approach to identify differentially expressed proteins between fluconazoleresistant and -susceptible strains.</P><P><B>Methods</B></P><P>Membrane and cellular proteins were extracted from fluconazolesusceptible and fluconazole-resistant <I>C glabrata </I>strains. Differentially expressed proteins were compared using two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis. Proteins with >1.5-fold difference in expression were identified by liquid chromatography tandem mass spectrometry (LC-MS/MS).</P><P><B>Results</B></P><P>A total of 65 proteins were differentially expressed in the cellular and membrane fractions. Among the 39 cellular proteins, 11 were upregulated and 28 were downregulated in fluconazole-resistant strains in comparison with fluconazole-susceptible strains. In the membrane fraction, a total of 26 proteins were found, of which 19 were upregulated and seven were downregulated. A total of 31 proteins were identified by LC-MS/MS that are involved in glycolysis, carbohydrate transport, energy transfer, and other metabolic pathways. Heat shock proteins were identified in various spots.</P><P><B>Conclusion</B></P><P>Heat shock and stress response proteins were upregulated in the membrane fraction of the fluconazole-resistant <I>C glabrata </I>strain. Compared with susceptible strains, fluconazole-resistant strains showed increased expression of membrane proteins and decreased expression of cellular proteins.</P>
Yoo Jeong Rae,Heo Sang Taek,Kim Misun,Kim Miyeon,Kang Myeong Jin,Kim Eui Tae,Kang Su Yeon,Lee Keun Hwa 대한의학회 2023 Journal of Korean medical science Vol.38 No.20
Background: Severe fever with thrombocytopenia syndrome virus (SFTSV) is transmitted through tick bites. Ticks are potential vectors for the bacterium Coxiella burnetii that causes Query fever. Here, we analyzed SFTSV and C. burnetii co-infection rates in ticks in rural areas of Jeju Island, South Korea. Methods: Free ticks were collected from the natural environment of the island between 2016 and 2019, and SFTSV RNA was extracted. Additionally, ribosomal RNA gene sequencing was used to identify Coxiella species. Results: Haemaphysalis longicornis was the most common tick species followed by H. flava. Tick number gradually increased from April, peaked in August, and was lowest in March. Of all the collected ticks, 82.6% (2,851/3,458) were nymphs, 17.9% (639/3,458) adults, and 0.1% (4/3,458) larvae. SFTSV-infected ticks comprised 12.6% of all ticks; their numbers were the lowest in November–December, increased from January, and were mostly identified in the adult stage during June–August. C. burnetii infections were detected in 4.4% of the SFTSVinfected H. longicornis ticks. C. burnetii co-infection was mainly observed in the nymph stage of H. longicornis, with the highest infection rate in January, followed by December and November. Conclusion: Our findings suggest that Jeju Island has a high SFTSV and potential C. burnetii infection in ticks. This study provides important insights regarding SFTS and Q fever risk to humans in South Korea.