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Ayhan Bulent,Chow Mo-Yuen,Song Myung-Hyun The Korean Institute of Electrical Engineers 2005 KIEE International Transactions on Electrical Mach Vol.b5 No.2
Broken rotor bars in induction motors can be detected by monitoring any abnormality of the spectrum amplitudes at certain frequencies in the motor current spectrum. Broken rotor bar fault detection schemes should rely on multiple signatures in order to overcome or reduce the effect of any misinterpretation of the signatures that are obscured by factors such as measurement noises and different load conditions. Multiple Discriminant Analysis (MDA) and Artificial Neural Networks (ANN) provide appropriate environments to develop such fault detection schemes because of their multi-input processing capabilities. This paper describes two fault detection schemes for broken rotor bar fault detection with multiple signature processing, and demonstrates that multiple signature processing is more efficient than single signature processing.
Hizir Kazdal,Ayhan Kanat,Osman Ersagun Batcik,Bulent Ozdemir,Senol Senturk,Murat Yildirim,Leyla Kazancioglu,Ahmet Sen,Sule Batcik,Mehmet Sabri Balik 대한척추외과학회 2017 Asian Spine Journal Vol.11 No.5
Study Design: Retrospective. Purpose: This study investigated the possible association of persistent low back pain (LBP) with caesarean section (CS) under spinal anesthesia. Overview of Literature: Many women suffer from LBP after CS, which is commonly performed under spinal anesthesia. However, this type of LBP is poorly understood, and there is poor consensus regarding increased risk after spinal anesthesia. Methods: We examined two groups of patients who underwent cesarean delivery under spinal anesthesia. Group I included patients who presented to a neurosurgical clinic complaining of LBP for at least 6 months. Group II was a control group with patients without LBP. We analyzed clinical and sagittal angle parameters, including age, body mass index, parity, central sagittal angle of the sacrum (CSAS), and sacral slope (SS). Results: Fifty-three patients participated in this study: 23 (43.1%) in Group I and 30 (56.9%) in Group II. Non-parametric Mann–Whitney U-tests showed that age, parity, and CSAS significantly differed between the two groups at 6 months. Conclusions: Age, parity, and CSAS appear to be associated with increased risk for LBP after CS under spinal anesthesia. Future prospective studies on this subject may help validate our results.
Polat Dursun,Tevfik Berk Bildaci,Hulusi Bulent Zeyneloglu,Esra Kuscu,Ali Ayhan 대한비뇨의학회 2011 Investigative and Clinical Urology Vol.52 No.9
Purpose: Midurethral synthetic slings for female stress urinary incontinence are minimally invasive polypropylene mesh tapes that are inserted under the midurethra with trocars. In the past decade, this new technology has become the most commonly performed procedure for female stress urinary incontinence, replacing the traditional open procedures. However, its effectiveness in pre- and postmenopausal women has not previously been compared. Materials and Methods: We assessed the clinical outcome of the transobturator tape (TOT) procedure in premenopausal (n=45) and postmenopausal (n=49) women by means of self-report and the Urinary Distress Inventory 6 (UDI-6) questionnaire. Results: The mean age of the pre- and postmenopausal women was 44 and 60 years, respectively. Mean parity was 2.4 and 3, respectively. There were no significant differences with respect to mean operation time, duration of hospitalization, or intraoperative and postoperative complications. However, premenopausal women were more satisfied with the operation than were postmenopausal women (p=0.014). Also, UDI-6 scores were significantly better in premenopausal women (p=0.027). Conclusions: The TOT operation appeared to be more effective in premenopausal women with stress urinary incontinence. However, further studies with larger sample sizes are needed to confirm our results. Purpose: Midurethral synthetic slings for female stress urinary incontinence are minimally invasive polypropylene mesh tapes that are inserted under the midurethra with trocars. In the past decade, this new technology has become the most commonly performed procedure for female stress urinary incontinence, replacing the traditional open procedures. However, its effectiveness in pre- and postmenopausal women has not previously been compared. Materials and Methods: We assessed the clinical outcome of the transobturator tape (TOT) procedure in premenopausal (n=45) and postmenopausal (n=49) women by means of self-report and the Urinary Distress Inventory 6 (UDI-6) questionnaire. Results: The mean age of the pre- and postmenopausal women was 44 and 60 years, respectively. Mean parity was 2.4 and 3, respectively. There were no significant differences with respect to mean operation time, duration of hospitalization, or intraoperative and postoperative complications. However, premenopausal women were more satisfied with the operation than were postmenopausal women (p=0.014). Also, UDI-6 scores were significantly better in premenopausal women (p=0.027). Conclusions: The TOT operation appeared to be more effective in premenopausal women with stress urinary incontinence. However, further studies with larger sample sizes are needed to confirm our results.