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Does the Width of the Bony Cochlear Nerve Canal Predict the Outcomes of Cochlear Implantation?
Chung, Juyong,Jang, Jeong Hun,Chang, Sun O,Song, Jae-Jin,Cho, Sung-Woo,Kim, So Young,Lee, Jun Ho,Oh, Seung-Ha Hindawi 2018 BioMed research international Vol.2018 No.-
<P>A narrow bony cochlear nerve canal (BCNC) is associated with sensorineural hearing loss necessitating cochlear implantation (CI). This study evaluated the implications of BCNC width for post-CI outcomes. A total of 56 children who had received CIs were included. The patients were divided into three groups according to the width of the BCNC (Group 1: diameter < 1.4 mm, <I>n</I> = 17; Group 2: diameter 1.4–2.0 mm, <I>n</I> = 14; Group 3: diameter > 2.0 mm, <I>n</I> = 25). The post-CI speech performances were compared among the three groups according to BCNC width. The correlation between BCNC width and post-CI speech performance was evaluated. Logistic regression analysis was also performed to investigate factors that can impact post-CI speech performance. Cochlear nerve deficiency (CND) occurred more frequently in Group 1. Groups 1 and 2 had significantly worse post-CI outcomes. Patients with intact cochlear nerves had significantly better post-CI outcomes than those with CND. When the cochlear nerve was intact, patients with a narrower BCNC showed less favorable results. Therefore, patients with either a narrow BCNC or CND seemed to have poorer outcomes. A narrow BCNC is associated with higher CND rates and poor outcomes. Measurement of BCNC diameter may help predict CI outcomes. </P>
Effect of the Order of Test Diets on the Accuracy and Safety of Swallowing Studies
정세희,Juyong Kim,Hyeonghui Jeong,이시욱 대한재활의학회 2014 Annals of Rehabilitation Medicine Vol.38 No.3
Objective To assess whether the order of test diets influences the results of swallowing studies with regard to their accuracy and safety.Methods Subjects with suspected dysphagia underwent a videofluoroscopic swallowing study (VFSS) and/or a fiberoptic endoscopic evaluation of swallowing (FEES) and repeated the study on the same day or within a week. The order of test diets comprised of two different sets: trial 1 with the fluid first and trial 2 with the semi-solid food first. Main outcome measurements were the modified penetration-aspiration scale (mPAS) and the pharyngeal residue severity scale (PRSS) for the vallecula and the pyriform sinus.Results Sixty-six patients (44 men and 22 women, aged 65.0±15.0 years) were enrolled in this study. Forty-three subjects were evaluated with VFSS only and 23 with both VFSS and FEES. As a result of the swallowing studies, there was no significant difference in each chosen diet sequence regarding mPAS and PRSS. Furthermore, there was no difference regarding the duration of studies, rate of premature study termination, rate of abnormal findings in post-study chest X-ray, and rate of fever or pneumonia post-study.Conclusion The accuracy and safety of the swallowing studies do not rely on the order of test diets.
VSB 전송 방식에서의 LMS 알고리듬과 Stop and Go 알고리듬을 혼합한 디지털 채널 등화기 설계
이주용,--,이재흥,-- 대전산업대학교 반도체기술연구소 1999 半導體技術硏究所報 Vol.1 No.-
In this paper, we designed a equalizer that removed the multipath of channel in 8-VSB transmission receiver. After doing the initial equalization with "LMS(Least Mean Square)" algorithm, this equalizer used "Stop-and-Go" algorithm, Because of estimating SER(Symbol to Error Ratio) every a training sequence. This can positively cope with transformation of channel and becuase of using fast clock than symbol-clock(10.76Mhz). We are able to reduce a multiplier.
Bae Abraham,Jeong Juyong,Park Byungyck 한국도로학회 2018 한국도로학회논문집 Vol.20 No.5
PURPOSES: A methodology using a 3D-engineering technique was developed for implementation in paving Quality Control (QC) practice in bridge overlay paving. METHODS: The as-built surface of a concrete-box-girder bridge tends to exhibit a certain level of undulation or roughness. This is usually caused by the inevitable limitation that camber prediction and construction cannot be perfectly matched. The undulation itself would not be a severe defect in a bridge structure, but it results in a challenge for achieving overlay pavement qualities such as pavement thickness and smoothness. One advantage of the 3D-engineering technique is that it allowed identification in advance, of conditions that will interfere with construction, thus preventing non-conformance qualities from being re-worked. RESULTS : Utilizing this technique, overlay paving was virtually simulated in advance, and insufficient thickness areas and rough sections were visually identified. Paving quantities were automatically computed. Paving level alternatives were correspondingly established based on analysis of the quantitative and 3D visual outputs. CONCLUSIONS: This study showed that this methodology could be successfully utilized for optimizing paving quantity and quality
Diagnostic Accuracy of Notified Cases as Pulmonary Tuberculosis in Private Sectors of Korea
정인아,Hee-Jin Kim,Juyong Kim,Soo-Yeon Oh,Jin Beom Lee,Jeong Ym Bai,Chang-Hoon Lee 대한의학회 2012 Journal of Korean medical science Vol.27 No.5
The diagnostic accuracy of the data reported in the Korean tuberculosis surveillance system (KTBS) has not been adequately investigated. We reviewed the clinical data of pulmonary tuberculosis (PTB) cases notified from private medical facilities through KTBS between January and June, 2004. PTB cases were classified into definite (culture-proven), probable (based on smear, polymerase chain reaction, histology, bronchoscopic finding, computed tomography, or both chest radiograph and symptoms) or possible (based only on chest radiograph) tuberculosis. Of the 1126 PTB cases, sputum AFB smear and culture were requested in 79% and 51% of the cases, respectively. Positive results of sputum smear and culture were obtained in 43% and 29% of all the patients, respectively. A total of 73.2%of the notified PTB cases could be classified as definite or probable and 81.7% as definite,probable, or possible. However, where infection was not confirmed bacteriologically or histologically, only 60.1% of the patients were definite, probable, or possible cases. More than 70% of PTB notified from private sectors in Korea can be regarded as real TB. The results may also suggest the possibility of over-estimation of TB burden in the use of the notification-based TB data.