In this paper, the application of bluetooth in vehicle hands free system was described, then the hardware and software structure of system had been designed. Finally, selection about electron parts and chip of electro...In this paper, the application of bluetooth in vehicle hands free system was described, then the hardware and software structure of system had been designed. Finally, selection about electron parts and chip of electronic equipments was presented in detail.展开更多
<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:""><span style="font-family:Verdana;"> Scoliosis is a complex...<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:""><span style="font-family:Verdana;"> Scoliosis is a complex musculoskeletal torsional deformity of spine that includes: Lateral curvature in the anterior-posterior plane with a Cobb angle greater than 10 degrees, Angulation in the sagittal plane, or Rota</span><span style="font-family:Verdana;">tion in the transverse plane. Scoliosis classified into neuromuscular, idi</span><span style="font-family:Verdana;">opathic, or congenital. Radiological evaluation is done by plain radiography, computed tomography (CT), and magnetic resonance (MR). We aimed to eva</span><span style="font-family:Verdana;">luate patients with idiopathic kyphoscoliosis who underwent a freehand</span><span style="font-family:Verdana;"> posterior approach for scoliosis correction through transpedicular screws fixation. </span><b><span style="font-family:Verdana;">Setting:</span></b><span style="font-family:Verdana;"> Al-Azhar University Hospitals. </span><b><span style="font-family:Verdana;">Subjects and Methods:</span></b><span style="font-family:Verdana;"> Study was performed on 12 patients with idiopathic kyphoscoliosis who underwent a freehand posterior approach for scoliosis correction through transpedicular screws fixation in Al-Azhar University Hospitals between 2015 to 2018 & follow up for one year. </span><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"> Early outcome showed improved Cobb’s angle and coronal balance significantly after surgery. Correction is 95% in 2 cases (17%), 80% correction in 8 cases (66%), 60% correction in 2 cases (17%). 2 </span><span style="font-family:Verdana;">cases have CSF leakage which improved with conservative treatment. Late</span><span style="font-family:Verdana;"> follow-up shows improvement of patient deformity and cosmetic appearance </span><span style="font-family:Verdana;">to the degree of patient satisfaction occur in 7 cases (58%) associated with</span><span style="font-family:Verdana;"> high SRS-30 total scores. However, assessment of the pain in comparison to preoperative assessment show improvement of pain in 4 cases (33%), persistent in 4 cases (33%), appear in 4 cases (33%). </span><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"> Freehand one-stage correction management of idiopathic kyphoscoliosis through the posterior approach is a safe and effective for near-total correction of deformity with a good outcome with minimal complications.展开更多
This paper considers an optimal sequential inspection schedule for a second-hand product after that the free nonrenewable warranty is expired. The length of warranty is prespecified and during the warranty period, the...This paper considers an optimal sequential inspection schedule for a second-hand product after that the free nonrenewable warranty is expired. The length of warranty is prespecified and during the warranty period, the product is minimally repaired by the dealer when it fails. Following the expiration of the non-renewing warranty, the product is inspected and upgraded sequentially a fixed number of times at the expenses of the customer.At each inspection, the failure rate of the product is reduced proportionally so that the product is upgraded. The product is assumed to deteriorate as it ages and the replacement of the product occurs when a fixed number of inspections are rendered. In addition,the intervals between two successive inspections are assumed to decrease monotonically. The main objective of this paper is to determine the optimal improvement level to upgrade the product at each inspection so that the expected maintenance cost during the life cycle of the product is minimized from the perspective of the customer. Under the given cost structures, we derive an explicit formula to obtain the expected maintenance cost incurred during the life cycle of the product and discuss the method to find the optimal level of the improvement analytically in case the failure times follow the Weibull distribution. Numerical results are analyzed to observe the impact of relevant parameters on the optimal solution.展开更多
文摘In this paper, the application of bluetooth in vehicle hands free system was described, then the hardware and software structure of system had been designed. Finally, selection about electron parts and chip of electronic equipments was presented in detail.
文摘<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:""><span style="font-family:Verdana;"> Scoliosis is a complex musculoskeletal torsional deformity of spine that includes: Lateral curvature in the anterior-posterior plane with a Cobb angle greater than 10 degrees, Angulation in the sagittal plane, or Rota</span><span style="font-family:Verdana;">tion in the transverse plane. Scoliosis classified into neuromuscular, idi</span><span style="font-family:Verdana;">opathic, or congenital. Radiological evaluation is done by plain radiography, computed tomography (CT), and magnetic resonance (MR). We aimed to eva</span><span style="font-family:Verdana;">luate patients with idiopathic kyphoscoliosis who underwent a freehand</span><span style="font-family:Verdana;"> posterior approach for scoliosis correction through transpedicular screws fixation. </span><b><span style="font-family:Verdana;">Setting:</span></b><span style="font-family:Verdana;"> Al-Azhar University Hospitals. </span><b><span style="font-family:Verdana;">Subjects and Methods:</span></b><span style="font-family:Verdana;"> Study was performed on 12 patients with idiopathic kyphoscoliosis who underwent a freehand posterior approach for scoliosis correction through transpedicular screws fixation in Al-Azhar University Hospitals between 2015 to 2018 & follow up for one year. </span><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"> Early outcome showed improved Cobb’s angle and coronal balance significantly after surgery. Correction is 95% in 2 cases (17%), 80% correction in 8 cases (66%), 60% correction in 2 cases (17%). 2 </span><span style="font-family:Verdana;">cases have CSF leakage which improved with conservative treatment. Late</span><span style="font-family:Verdana;"> follow-up shows improvement of patient deformity and cosmetic appearance </span><span style="font-family:Verdana;">to the degree of patient satisfaction occur in 7 cases (58%) associated with</span><span style="font-family:Verdana;"> high SRS-30 total scores. However, assessment of the pain in comparison to preoperative assessment show improvement of pain in 4 cases (33%), persistent in 4 cases (33%), appear in 4 cases (33%). </span><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"> Freehand one-stage correction management of idiopathic kyphoscoliosis through the posterior approach is a safe and effective for near-total correction of deformity with a good outcome with minimal complications.
基金supported by the Research Base Construction Fund Support Program funded by Chonbuk National University in 2013the Mid-career Research Program(2016R1A2B4010080)through NRF Grant funded by MEST
文摘This paper considers an optimal sequential inspection schedule for a second-hand product after that the free nonrenewable warranty is expired. The length of warranty is prespecified and during the warranty period, the product is minimally repaired by the dealer when it fails. Following the expiration of the non-renewing warranty, the product is inspected and upgraded sequentially a fixed number of times at the expenses of the customer.At each inspection, the failure rate of the product is reduced proportionally so that the product is upgraded. The product is assumed to deteriorate as it ages and the replacement of the product occurs when a fixed number of inspections are rendered. In addition,the intervals between two successive inspections are assumed to decrease monotonically. The main objective of this paper is to determine the optimal improvement level to upgrade the product at each inspection so that the expected maintenance cost during the life cycle of the product is minimized from the perspective of the customer. Under the given cost structures, we derive an explicit formula to obtain the expected maintenance cost incurred during the life cycle of the product and discuss the method to find the optimal level of the improvement analytically in case the failure times follow the Weibull distribution. Numerical results are analyzed to observe the impact of relevant parameters on the optimal solution.