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Comparison of Long-Term Average Speech Spectra in Reading Context and Spontaneous Speech
Kyungju Lee,In-Ki Jin 한국언어재활사협회 2017 Clinical Archives of Communication Disorders Vol.2 No.1
Purpose: The purpose of this study was to compare the long-term average speech spectra (LTASS) between reading context and spontaneous speech. Methods: A continuous discourse for reading context and answers of an interview for the spontaneous speech were recorded by twenty speakers using a recording system in random order. Recorded stimuli were normalized to a root-mean-square (RMS) level of 65 dB SPL. Then, LTASS were analyzed as a function of frequency. Results: There were no statistical differences between the two different styles in both male and female participants. Differences between the two styles were less than 2.1 dB in male participants and less than 2.9 dB in female participants across all frequency areas. Conclusions: Results of this study indicate that reading context can be considered as a form to reflect the speech understanding in real life like spontaneous speech.
이희훈(Heehoon Lee),이경주(Kyungju Lee),남진아(Jina Nam),이보경(Bokyung Lee),정의훈(Euihoon Jung) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.2D
MPEG-4 BIFS는 장면서술언어로서 본 논문에서는 MPEG-4 영상을 이용한 양방향 멀티미디어 서비스를 구현하는데 그 목적이 있으며, 장면서술은 MPEG-4 장면을 구성하는 객체들의 시공간적 구성관계를 기술하는 것이다. 또한, 본 논문에서는 MPEG-4에 정의된 다양한 데이터 포맷들로 영상 신호와 대응되는 실시간 데이터정보를 Display 하여 사용자 입력을 받아 그 정보를 사용자에게 보여 줌으로써 양방향 서비스를 사용자에게 제공할 수 있도록 하였으며, 양방향데이터서비스가 지원되는 플레이어를 개발하였다.
Lee, Jee Hoo,Lim, Hyunwook,Kim, Kyungju,Yim, Hyung Eun,Yoo, Kee Hwan Korean Society of Pediatric Nephrology 2015 Childhood kidney diseases Vol.19 No.2
Purpose: Although the American Academy of Pediatrics provides clinical guidelines for urinary tract infection (UTI) infants, guidelines are not appropriate for neonates and infants less than 2 months of age due to insufficient data. The aim of this study was to evaluate the characteristics of neonates and young infants less than 2 months old (group 1) with UTI compared to older infants from 2 to 12 months old (group 2). Methods: We reviewed UTI patients aged 0 to 12 months admitted to the pediatric department in the last 5 years. Clinical characteristics such as age, sex, fever duration, recurrence, progression to acute pyelonephritis (APN), malformations like hydronephrosis and vesicoureteral reflux (VUR), and laboratory results were compared between group 1 and group 2. Results: 615 patients were included in this study. Group 1 had 94 cases and group 2 had 521 cases. Escherichia coli was the most commonly isolated pathogen in urine cultures. Fever duration was shorter in group 1 (vs.) 2 ($1.91{\pm}1.43$ days vs. $3.42{\pm}2.40$ days, P<0.05). As compared to group 2, group 1 had a higher proportion of patients with antenatal hydronephrosis and hydronephrosis found after admission (10.6% vs. 3.6% and 75.5% vs. 55.9%, P<0.05). There were differences between two groups in white blood cell (WBC) count (Group 1: $13,694{\pm}5,315/{\mu}L$, Group 2: $15,271{\pm}6,130/{\mu}L$, P<0.05) and C-reactive protein (Group 1: $32.02{\pm}35.17mg/L$, Group 2: $46.51{\pm}46.63mg/L$, P<0.05). Conclusion: Compared to older infants, UTI in neonates and young infants shows milder clinical manifestations except higher rates of hydronephrosis but outcome is alike.
( Kyungju Kim ),( Ji Won Jang ),( Ji Hyeon Moon ),( Jeonghee Shin ),( Eun Hee Lee ),( Byung Min Choi ),( Young Sook Hong ),( Min Jeong Oh ) 대한주산의학회 2019 Perinatology Vol.30 No.1
Objective: Intrauterine inflammation caused by chorioamnionitis has been related with various perinatal morbidities which increase the risk of bronchopulmonary dysplasia (BPD). C-reactive protein (CRP) is a well known biomarker of inflammation. We aimed to investigate the relationship between histological chorioamnionitis (HCA) and BPD, and also to observe the changes of CRP in BPD. Methods: Low-birth-weight infants (LBWIs) admitted to the neonatal intensive care unit between January 2011 and October 2017 were reviewed. Perinatal morbidities associated with BPD including maternal HCA were observed. Also, changes of CRP were analyzed. Results: A total of 584 LBWIs were analyzed and 168 (28.8%) had HCA and 46 (7.9%) had BPD. The development of BPD was associated with gestational age, birth weight, 1 and 5 minutes Apgar scores, the presence of preterm premature rupture of membrane, prenatal antibiotics, respiratory distress syndrome (RDS), ventilator application, early onset sepsis, necrotizing enterocolitis, intraventricular hemorrhage, retinopathy of prematurity, patent ductus arteriosus and HCA. The multiple logistic regression model for BPD showed that the risk factors of BPD were lower gestational age, lower birth weight, patent ductus arteriosus (PDA). Chorioamnionitis was not a significant risk factor for BPD (aOR, 1.477; 95% CI, 0.376-5.806). Infants with BPD were likely to have higher CRP on day 0 and day 7. Conclusion: Our study suggests that the primary risk factors of BPD in LBWIs are lower gestational age, lower birth weight, RDS, ventilator application and PDA rather than HCA. In infants with BPD, CRP was significantly higher on day 0 and day 7.
Jee Hoo Lee,Hyunwook Lim,Kyungju Kim,Hyung Eun Yim,유기환 대한소아신장학회 2015 Childhood kidney diseases Vol.19 No.2
Purpose: Although the American Academy of Pediatrics provides clinical guidelines for urinary tract infection (UTI) infants, guidelines are not appropriate for neonates and infants less than 2 months of age due to insufficient data. The aim of this study was to evaluate the characteristics of neonates and young infants less than 2 months old (group 1) with UTI compared to older infants from 2 to 12 months old (group 2). Methods: We reviewed UTI patients aged 0 to 12 months admitted to the pediatric department in the last 5 years. Clinical characteristics such as age, sex, fever duration, recurrence, progression to acute pyelonephritis (APN), malformations like hydronephrosis and vesicoureteral reflux (VUR), and laboratory results were compared between group 1 and group 2. Results: 615 patients were included in this study. Group 1 had 94 cases and group 2 had 521 cases. Escherichia coli was the most commonly isolated pathogen in urine cultures. Fever duration was shorter in group 1 (vs.) 2 (1.91±1.43 days vs. 3.42±2.40 days, P<0.05). As compared to group 2, group 1 had a higher proportion of patients with antenatal hydronephrosis and hydronephrosis found after admission (10.6% vs. 3.6% and 75.5% vs. 55.9%, P<0.05). There were differences between two groups in white blood cell (WBC) count (Group 1: 13,694±5,315/μL, Group 2: 15,271±6,130/μL, P<0.05) and C-reactive protein (Group 1: 32.02±35.17 mg/L, Group 2: 46.51±46.63 mg/L, P<0.05). Conclusion: Compared to older infants, UTI in neonates and young infants shows milder clinical manifestations except higher rates of hydronephrosis but outcome is alike.
한경주(Han KyungJu),황혜숙(Hwang HyeSuk),김유성(Kim YuSung),이지은(Lee JiEun),정상용(Jeong SangYong),류연희(Ryu YeonHe),최선미(Choi SunMi),구성태(Koo SungTae) 한국한의학연구원 2007 한국한의학연구원논문집 Vol.13 No.2
The aim of the study was to analyze recent trends of experimental studies regarding to acupuncture and moxibustion (AM) through reviewing the 492 papers in the PubMed database in order to help researchers from overlapping study on the same theme and to spur them to investigate experimental studies on AM with understanding the current flow of that. For the analysis, we include papers in which abstract was written in English. First, we performed quantitative analysis of the experimental studies using whole of the first filtrated 492 papers. From this analysis, we could obtain the followings: "Trends of study in the most frequently appeared journals and leading authors in experimental study of AM", "The number of papers and name of journals by leading authors in experimental study of AM", "Trends of Korean papers in the most frequently appeared journals and Korean leading authors in experimental study of AM", "Classification of experimental studies related to acupuncture and moxibustion according to intervention methods or individual country" and "Assortment of experimental studies related to acupuncture and moxibustion in terms of intervention methods on leading countries". Second, we collected 72 papers considering impact factor of the journal and influential effect of the papers' result for qualitative analysis, and we divided the papers into pain related one or not, because the effect of AM on pain is major subject of AM study. The results showed that experimental studies regarding to AM still has several weakness such as limited usage of acupuncture points and inclined application of electroacupucture even though there are 361 acupuncture points in the human body and various kinds of stimulation methods using traditional needles and moxibustion. Therefore, we suggest that researchers should pay more attention to the study on basic AM research creatively and systematically through strengthening and enhancing the cooperation among colleges, research institutes and hospitals. Moreover, in order to promote the basic research of the AM, it is required that we need cross-disciplinary research as well as international collaboration research.
박재호(Park, Jaeho),이경주(Lee, Kyungju),송상우(Song, Sangwoo),조슬기(Jo, Seulki),문병무(Moon, Byungmoo) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
Dye-sensitized solar cells(DSSCs) have been recognized as an alternative to the conventional p-n junction solar cells because of their simple fabrication process, low production cost, and transparency. A typical DSSC consists of a transparent conductive oxide (TCO) electrode, a dye-sensitized oxide semiconductor nanoparticle layer, liquid redox electrolyte, and a Pt-counter electrode. In dye-sensitized solar cells, charge recombination processes at interfaces between coducting glass, TiO₂, dye, and electrolyte play an important role in limiting the photon-to-electron conversion efficiency. A layer of ZTO thin film less than ~200nm in thickness, as a blocking layer, was deposited by DC magnetron sputtering method directly onto the anode electrode to be isolated from the electrolyte in dye-sensitized solar cells(DSCs). This is to prevent the electrons from back-transferring from the electrode to the electrolyte (I^-/I₃^-). The presented DSCs were fabricated with working electrode of Ga-doped ZnO glass coated with blocking ZTO layer, dye-attached nanoporous TiO₂ layer, gel electrolyte and counter electrode of Pt-deposited GZO glass. The effects of blocking layer were studied with respect to impedance and conversion efficiency of the cells.