http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한국 학생들의 영어 어두자음 발화학습에 관한 실험 연구
강석근,이희천 서울대학교 어학연구소 2002 語學硏究 Vol.38 No.1
The purpose of this paper is to examine through experiment if Korean students can learn sounds like /r/, /f/, /b/ and /v/ precisely, sounds which Korean does not contain, and to discover methods whereby this learning may be accomplished. To this end, we prepared two kinds of test materials with 30 questions each, consisting of pairs with /l, r/, /f, p/, and /b, v/ in word-initial positions. In the tests, 40 third-year students from Janghang Technical High School served as subjects. The subjects were divided into two groups: an experimental group and a control group. The tests consisted of two steps. First, we examined each group's pronunciation ability of the above consonants in word-initial positions. Next, after teaching the experimental group the differences between the consonants above with special programs, we examined their degree of improvement. The results showed that the pronunciation ability of the experimental group improved more than that of the control group. In conclusion, although most of the subjects of the control group had difficulty in pronouncing the sounds that Korean does not contain, they improved their pronunciation ability to some degree by learning the place and manner of articulation, and through reetitive practice.
Kang, Seok-Hui,Chung, Byung-Ha,Choi, Sun-Ryoung,Lee, Ja-Young,Park, Hoon-Suk,Sun, In-O,Choi, Bum-Soon,Park, Cheol-Whee,Kim, Yong-Soo,Yang, Chul-Woo The Korean Association of Internal Medicine 2011 The Korean Journal of Internal Medicine Vol.26 No.1
<P><B>Background/Aims</B></P><P>Many studies have compared patients with systemic lupus erythematosus (SLE) on renal replacement therapy (RRT) with non-lupus patients. However, few data are available on the long-term outcome of patients with end-stage renal disease (ESRD) secondary to SLE who are managed by different types of RRTs.</P><P><B>Methods</B></P><P>We conducted a retrospective multicenter study on 59 patients with ESRD who underwent maintenance RRT between 1990 and 2007 for SLE. Of these patients, 28 underwent hemodialysis (HD), 14 underwent peritoneal dialysis (PD), and 17 patients received kidney transplantation (KT). We analyzed the clinical outcomes in these patients to determine the best treatment modality.</P><P><B>Results</B></P><P>The mean follow-up period was 5 ± 3 years in the HD group, 5 ± 3 years in the PD group, and 10 ± 5 years in the KT group (<I>p</I> = 0.005). Disease flare-up was more common in the HD group than in the KT group (<I>p</I> = 0.012). Infection was more common in the PD and HD groups than in the KT group (HD vs. KT, <I>p</I> = 0.027; PD vs. KT, <I>p</I> = 0.033). Cardiovascular complications were more common in the HD group than in the other groups (<I>p</I> = 0.049). Orthopedic complications were more common in the PD group than in the other groups (<I>p</I> = 0.028). Bleeding was more common in the HD group than in the other groups (<I>p</I> = 0.026). Patient survival was greater in the KT group than in the HD group (<I>p</I> = 0.029). Technique survival was lower in the PD group than in the HD group (<I>p</I> = 0.019).</P><P><B>Conclusions</B></P><P>Among patients with ESRD secondary to SLE, KT had better patient survival and lower complication rates than HD and lower complication rates than PD. The prognosis between the HD and PD groups was similar. We conclude that if KT is not a viable treatment option, any alternative treatment should take into account the patient's general condition and preference.</P>
Hui-Seok Chai,Byoung-Wook Kang,Jin-Seok Kim,Jae-Chul Kim 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.6
In the power plant using high temperature fuel cells such as Molten Carbonate Fuel Cell(MCFC), and Solid Oxide Fuel Cell(SOFC), the generated electric power per area of power generation facilities is much higher than any other renewable energy sources. - High temperature fuel cell systems are capable of operating at MW rated power output. - It also has a feature that is short for length of the line for connecting the interior of the generation facilities. In normal condition, these points are advantages for voltage drops or power losses. However, in abnormal condition such as fault occurrence in electrical system, the fault currents are increased, because of the small impedance of the short length of power cable. Commonly, to minimize the thermal-mechanical stresses on the stack and increase the systems reliability, we divided the power plant configuration to several banks for parallel operation. However, when a fault occurs in the parallel operation system of power main transformer, the fault currents might exceed the interruption capacity of protective devices. In fact, although the internal voltage level of the fuel cell power plant is the voltage level of distribution systems, we should install the circuit breakers for transmission systems due to fault current. To resolve these problems, the SFCL has been studied as one of the noticeable devices. Therefore, we analyzed the effect of application of the SFCL on bus tie in a fuel cell power plants system using PSCAD/EMTDC.
The Clinical Significance of Physical Activity in Maintenance Dialysis Patients
Kang, Seok Hui,Do, Jun Young,Jeong, Hye Yun,Lee, So-Young,Kim, Jun Chul Karger Medical and Scientific Publishers 2017 Kidney & blood pressure research Vol. No.
<P>Background: The aim of the present study was to evaluate the effects of physical activity on various aspects in Asian dialysis patients. Methods: This was a retrospective cohort study. Study participants were recruited from 27 hospitals or dialysis centers in Korea (n = 1611). The participants were divided into 3 groups according to the degree of regular exercise: Inactive group, Intermediate group, and Active group. Results: The proportions of patients with frailty and the presence of each component decreased as physical activity increased. The presence and numbers of disabilities decreased as physical activity increased. The number of participants with a history of fall during the last 12 months was 149 (20.5%) in the Inactive group, 88 (16.9%) in the Intermediate group, and 48 (13.2%) in the Active group. Physical component scale and mental component scale scores increased as physical activity increased. The survival rate for all-cause death at 500 days was 95.5% in the Active group, 95.2% in the Intermediate group, and 93.5% in the Inactive group. Conclusion: High physical activity was associated with favorable results for most health-related quality of life scale scores, including frailty, disability, and exhaustion, in Korean dialysis patients. (C) 2017 The Author(s) Published by S. Karger AG, Basel</P>
( Seok Hui Kang ),( Kyu Hyang Cho ),( Jong Won Park ),( Kyung Woo Yoon ),( Jun Young Do ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: Advances in bioimpedance analysis (BIA) technologies now enable visceral fat area (VFA) to be assessed using this method. The aim of this study was to evaluate the clinical relevance and usefulness of VFA as a predictor of chronic kidney disease (CKD) and metabolic syndrome (MS), using BIA. Methods: We identifi ed 24,791 adults who underwent voluntary routine health checkups at Yeungnam University Hospital. In total 22,480 patients were recruited into our study. Participants were divided into 3 tertiles based on their VFA: low, middle, and high tertiles. CKD was defi ned as an estimated glomerular fi ltration rate (eGFR) <60 mL/min/1.73 m2. Results: The higher tertile of VFA was associated with a higher prevalence of diabetes mellitus, hypertension, and male sex. Waist-to-hip ratio, body mass index, blood pressure, lean mass, body fat %, and fasting glucose, total cholesterol, triglyceride, GGT, AST, ALT, and uric acid levels all increased as the VFA tertile increased (P < 0.001 for all variables). The prevalence of CKD was 6.9% in the low tertile, 13.9% in the middle tertile, and 25.2% in the high tertile (P < 0.001). The prevalence of MS was 2.2% in the low tertile, 12.8% in the middle tertile, and 36.7% in the high tertile (P < 0.001). The AUROC values for VFA were higher than those for BMI and WHR. For VFA, the sensitivity and specifi city for predicting CKD were 62.66% (95% CI, 61.0-64.3) and 64.22% (95% CI, 63.5-64.9), respectively, and 77.65% (95% CI, 76.3-79.0), and 68.81% (95% CI, 68.1-69.5), respectively for predicting MS. Conclusions: Our results demonstrated that the VFA, measured by BIA, is a simple method for predicting the risk of CKD and MS.
( Seok Hui Kang ),( Byung Ha Chung ),( Sun Ryoung Choi ),( Ja Young Lee ),( Hoon Suk Park ),( In O Sun ),( Bum Soon Choi ),( Cheol Whee Park ),( Yong Soo Kim ),( Chul Woo Yang ) 대한내과학회 2011 The Korean Journal of Internal Medicine Vol.26 No.1
Background/Aims: Many studies have compared patients with systemic lupus erythematosus (SLE) on renal replacement therapy (RRT) with non-lupus patients. However, few data are available on the long-term outcome of patients with end-stage renal disease (ESRD) secondary to SLE who are managed by different types of RRTs. Methods: We conducted a retrospective multicenter study on 59 patients with ESRD who underwent maintenance RRT between 1990 and 2007 for SLE. Of these patients, 28 underwent hemodialysis (HD), 14 underwent peritoneal dialysis (PD), and 17 patients received kidney transplantation (KT). We analyzed the clinical outcomes in these patients to determine the best treatment modality. Results: The mean follow-up period was 5 ± 3 years in the HD group, 5 ± 3 years in the PD group, and 10 ± 5 years in the KT group (p = 0.005). Disease flare-up was more common in the HD group than in the KT group (p = 0.012). Infection was more common in the PD and HD groups than in the KT group (HD vs. KT, p = 0.027; PD vs. KT, p = 0.033). Cardiovascular complications were more common in the HD group than in the other groups (p = 0.049). Orthopedic complications were more common in the PD group than in the other groups (p = 0.028). Bleeding was more common in the HD group than in the other groups (p = 0.026). Patient survival was greater in the KT group than in the HD group (p = 0.029). Technique survival was lower in the PD group than in the HD group (p = 0.019). Conclusions: Among patients with ESRD secondary to SLE, KT had better patient survival and lower complication rates than HD and lower complication rates than PD. The prognosis between the HD and PD groups was similar. We conclude that if KT is not a viable treatment option, any alternative treatment should take into account the patient`s general condition and preference. (Korean J Intern Med 2011;26:60-67)
The relationship between disability and clinical outcomes in maintenance dialysis patients
( Seok Hui Kang ),( Jun Young Do ),( Jun Chul Kim ) 영남대학교 의과대학 2021 Yeungnam University Journal of Medicine Vol.38 No.2
Background: Dialysis patients are prone to having disabilities. We aimed to evaluate the association between disability and various clinical outcomes in Korean dialysis patients. Methods: This study consisted of 1,615 dialysis patients from 27 centers. We evaluated disability by using four questions on the activities of daily living (ADLs) concerning whether help was needed for feeding, dressing/undressing, getting in/out of bed, or taking a bath/shower. We divided the patients into three groups: no disability (Non-D, none of the four ADL domains required help; n=1,312), mild disability (Mild-D, one ADL domain required some/full help; n=163), or moderate to severe disability (MS-D, two or more ADL domains required some/full help; n=140). We evaluated falls, frailty, health-related quality of life (HRQoL), mortality, and hospitalization. Results: The numbers of participants with a fall during the last 1 year were 199 (15.2%), 42 (25.8%), and 44 (31.4%) in the Non-D, Mild-D, and MS-D groups, respectively (p<0.001). The numbers of participants with frailty in the Non-D, Mild-D, and MS-D groups were 381 (29.0%), 84 (51.5%), and 93 (66.4%), respectively (p<0.001). In both univariate and multivariate analyses, the physical component scale and mental component scale scores decreased as the grade of disability increased (p<0.001 for both scores). Hospitalization-free survival rate at 500 days was 64.2%, 56.7%, and 51.1% in the Non-D, Mild-D, and MS-D, respectively (p=0.001 for trend). Patient survival rate at 500 days was 95.3%, 89.5%, and 92.3% in the Non-D, Mild-D, and MS-D, respectively (p=0.005 for trend). Conclusion: Disability was associated with falls, frailty, HRQoL scales, and survival trends in Korean dialysis patients.