• 소음진동
• /
• 제5권1호
• /
• pp.29-35
• /
• 1995

This paper presents the simultaneous optimal design of structure and LQG control systems for the improvement of riding comforts of active vehicle suspension systems. The performance index of riding comforts is extended to include frequency-weighted acceleration in the quadratic cost functional. Janeway human response curve with respect to acceleration is used to verify the usefulness of the presented method. The method is applied to a half model of an active vehicle suspension systems with elastic body moving on randomly profiled road. The values of stiffness of suspensions are used for the structural design variables. The conjugate gradient method is used for optimization. The simulated results of simultaneous optimization with frequency-weighted cost functional are compared with those without frequency- weighted cost functional.

• 동아시아식생활학회지
• /
• 제23권1호
• /
• pp.44-52
• /
• 2013

This study investigated hepatic functional improvement and anti-fibrotic effects of water extracts of black tea. Male Sprague-Dawley rats were divided into four groups (normal, control, and two experimental subgroups: Ba, Bb) and observed for 3 weeks. Liver fibrosis in rats developed from carbon tetrachloride ($CCl_4$) administration, except for the normal group. Except for the normal and control group, the two experimental subgroups were fed water extracts of black tea. The food efficiency ratio significantly increased in the experimental group compared to the control group. The experimental group had a significantly lower liver weight compared to the control group. The ratio of liver weight to body weight was significantly lower in the experimental group than the control group. The levels of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, blood urea nitrogen, and low-density lipoprotein-cholesterol in serum significantly decreased in the experimental group compared to the control group. The values of hydroxyproline and malondialdehyde in liver were even lower in the experimental group than the control group. In observations on liver histology, weaker inflammation and fibrosis were observed in the experimental group compared to the control group. In conclusion, water extracts of black tea help hepatic cells keep their functions, restraining and protecting the liver from impairments caused by $CCl_4$ administration, and can be effective as anti-fibrotic agents.

• 대한견주관절학회:학술대회논문집
• /
• 대한견주관절학회 2008년도 제16차 학술대회
• /
• pp.53-53
• /
• 2008

Twenty-six patients (12 male and 14 female) with symptomatic scapular winging caused by serratus anterior dysfunction were managed with split pectoralis major tendon transfer (sternal head) with autogenous hamstring tendon augmentation from 1998 to 2006. Twenty-five patients had positive results for long thoracic nerve palsy on electromyography. The mean duration of symptoms until surgery was 48 months (range 12~120 months). Four patients had non-traumatic etiologies and twenty-two patients had traumatic etiologies. At the final follow-up assessment for functional improvement, a Constant-Murley score was used. 21 patients were completely evaluated, while 5 patients who had less than 12 months follow-up were excluded. Pain relief was achieved in 19 of the 21 patients, with twenty patients showing functional improvement. The pain scores improved from 6.0 preoperatively to 1.8 postoperatively. The mean active forward elevation improved from $108^{\circ}$ (range $20^{\circ}\sim165^{\circ}$) preoperatively to $151^{\circ}$ (range $125^{\circ}\sim170^{\circ}$) postoperatively. The mean Constant-Murley score improved from 57.7 (range 21~86) preoperatively to 86.9 (range 42~98) postoperatively. A recurrence developed in one patient. Of the twenty-one patients, eight had excellent results, nine had good results, three had fair results, and one had poor results. Most patients with severe symptomatic scapular winging had functional improvement and pain relief with resolution of scapular winging.

• Archives of Plastic Surgery
• /
• 제47권6호
• /
• pp.505-515
• /
• 2020

Deviated nose is highly challenging in rhinoplasty since the surgeon should consider both aesthetic and functional aspects of the nose. Deviated nose correction is surgically complex, and a thorough understanding of the mechanical and physiological changes of intranasal structures, including the septum and turbinates, is necessary for functional improvement.

• 한방재활의학과학회지
• /
• 제28권2호
• /
• pp.91-104
• /
• 2018

Objectives The aim of this study is to investigate the effect of Acupotomy on the pain reduction and functional improvement of patients with Acute low back pain. Methods We studied 60 patients with Acute low back pain with Numeric Rating Scale (NRS) 5 or higher in admission and had admitted to Department of Korean Medicine Rehabilitation of Daejeon University from March 1, 2017 to October 31, 2017. 30 patients had received Acupotomy combined Korean Medicine treatment(such as acupuncture, moxabustion, herbal medicine, etc) and the other 30 had received Korean Medicine treatment only. The analysis was conducted as a retrospective study which analyzes the patient's medical records. Statistical analysis was performed using the IBM SPSS Statistics 24 program. We used NRS to evaluate pain reduction, used Range of Motion (ROM) and Roland Morris Disability Questionnaire (RMDQ) to evaluate function improvement, and used EuroQol-5 Dimension (EQ-5D) and EuroQoL-Visual Analogue Scale (EQ-VAS) to assess quality of life. Finally, a five-point Likert scale was used to assess treatment satisfaction. Results The analysis revealed that patients who were treated with Acupotomy showed statistically significant NRS reduction, improvement of ROM and RMDQ, improvement of EQ-5D and EQ-VAS and satisfaction compared to those who just recevied Korean Medicine treatment. Conclusions In conclusion, we found that the Acupotomy showed a positive effect on pain resolving, functional rehabilitation and quality of life in patients with Acute low back pain.

• 대한후두음성언어의학회지
• /
• 제5권1호
• /
• pp.29-37
• /
• 1994

We report the clinical treatment experience of a case with severe lateralization articulation disorder especially in /ㅅ/, who was treated with using a dynamic palatogram. The patient was 16-year-old male patient and he was taken several attempts of traditional speech therapy without improvement The authors tried to treat him with newly designed dynamic palatogram for two period with good results. We are going to review brief clinical experience with the patient and discuss the effectiveness and indications of the dynamic palatogram. In this study, we can summarize the effect of treatment as follows; Lateralization of the /ㅅ/ was improved markedly with using the dynamic palatogram, and we thought the improvement was achieved mainly by visual feedback control.

• 대한산업공학회지
• /
• 제41권2호
• /
• pp.209-219
• /
• 2015

This paper deals with a case study about productivity improvement in medium and small-sized manufacturing factories. It is popular to improve the productivity of lines by shortening the production cycles and assigning multi jobs to workers. We analyze the production lines and improve the productivity in the case study through multi-functional workers and shortened production lines. Based on the case study, we propose some guidelines to improve the productivity of production lines.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2008년도 춘계학술대회 논문집
• /
• pp.952-963
• /
• 2008

The collection of KTX trainset fault code is made by DEP software. We can improve software function and update data after understanding DEP software function and software structure. For the improvement of trainset function and its performance, the same improvement of performance and structure change as DEP software, which collects and analyzes train's fault information, are required. Accordingly, we made a research for functional strucfure of KTX fault code collection software, STR3F, variable declaration through Script.rxr file and code analysis method and proceeded research for realizing more improved user environment of DEL software and fault analysis method.

• 대한한방소아과학회지
• /
• 제35권3호
• /
• pp.67-88
• /
• 2021

Objectives The purpose of this study is to analyze randomized clinical trials (RCTs) on traditional Chinese medicine to summarize its efficacy and safety for the treatment of functional gastrointestinal disorders (FGIDs) in children. Methods We searched literatures published up to March 19, 2021 using two Chinese electronic databases. Data regarding patients, interventions, results, and adverse events were extracted from RCTs of herbal medicine for children with FGIDs. Results A total of 34 RCTs were included: 16 trials on functional dyspepsia, 7 trials on functional constipation, 6 trials on functional abdominal pain, 4 trials on irritable bowel syndrome, and 1 trial on functional diarrhea. 26 of 29 trials that reported total effective rate, the treatment group showed a significant improvement compared to the control group. Most of other evaluation indicators, such as symptom score, symptom disappearance time, and recurrence rate also demonstrated statistically significant improvement. Of the 16 studies which reported safety, 5 studies reported no adverse reactions in either group, and 4 studies reported no statistically significant differences in the incidence of adverse events between two groups. Also, reported adverse events were mostly mild. Conclusions Herbal medicine may help improve symptoms of FGIDs in children. However, due to limited types of studies on sub-diseases of FGIDs and small sample sizes in each study, additional large scale clinical studies on various other FGIDs are necessary.

• 한국복합재료학회:학술대회논문집
• /
• 한국복합재료학회 1999년도 추계학술발표대회 논문집
• /
• pp.40-43
• /
• 1999

Electrochemical surface treatment of PAN-based carbon fibers in acidic electrolyte has been studied in increasing the surface functional groups on fiber surfaces for the improvement of fiber-matrix adhesion of the resulting composites. According to the FT-IR and XPS measurements, it reveals that the oxygen functional groups on fibers are largely influence on the composite mechanical behaviors, whereas the nitrogen functional groups are not affected in the system. In this work, a good correlation between surface functionality and mechanical properties is established.