A novel method for chromatic dispersion estimation with lower computation complexity in fractional domain

2018 ◽  
Author(s):  
Yiwen Ma ◽  
Peng Guo ◽  
Aiying Yang ◽  
Yaojun Qiao ◽  
Yueming Lu
Keyword(s):  
Chromatic Dispersion ◽  
Computation Complexity ◽  
Novel Method

Novel method for fiber chromatic dispersion measurement based on microwave photonic technique

2012 ◽  
Vol 10 (7) ◽  
pp. 070602-70604 ◽  
Author(s):  
Min Zhang Min Zhang ◽  
Shanfeng Li Shanfeng Li ◽  
Nuannuan Shi Nuannuan Shi ◽  
Yiying Gu Yiying Gu ◽  
Pengsheng Wu Pengsheng Wu ◽  
...  
Keyword(s):  
Chromatic Dispersion ◽  
Microwave Photonic ◽  
Dispersion Measurement ◽  
Novel Method

scholarly journals A Novel Method Based on Oblique Projection Technology for Mixed Sources Estimation

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Weijian Si ◽  
Xiaolin Li ◽  
Yilin Jiang ◽  
Liangtian Wan
Keyword(s):  
Array Signal Processing ◽  
Near Field ◽  
Location Estimation ◽  
Noise Power ◽  
Oblique Projection ◽  
Computation Complexity ◽  
Range Estimation ◽  
Localization Algorithms ◽  
Partial Area ◽  
Novel Method

Reducing the computational complexity of the near-field sources and far-field sources localization algorithms has been considered as a serious problem in the field of array signal processing. A novel algorithm caring for mixed sources location estimation based on oblique projection is proposed in this paper. The sources are estimated at two different stages and the sensor noise power is estimated and eliminated from the covariance which improve the accuracy of the estimation of mixed sources. Using the idea of compress, the range information of near-field sources is obtained by searching the partial area instead of the whole Fresnel area which can reduce the processing time. Compared with the traditional algorithms, the proposed algorithm has the lower computation complexity and has the ability to solve the two closed-spaced sources with high resolution and accuracy. The duplication of range estimation is also avoided. Finally, simulation results are provided to demonstrate the performance of the proposed method.

scholarly journals Risk Evaluation in Failure Mode and Effects Analysis Based on D Numbers Theory

2019 ◽  
Vol 14 (5) ◽  
pp. 672 ◽  
Author(s):  
Baoyu Liu ◽  
Yong Deng
Keyword(s):  
Failure Mode ◽  
Risk Evaluation ◽  
Risk Priority Number ◽  
Computation Complexity ◽  
Numerical Example ◽  
Risk Coefficient ◽  
Complex Calculation ◽  
Novel Method ◽  
D Numbers

Failure mode and effects analysis (FMEA) is a useful technology for identifying the potential faults or errors in system, and simultaneously preventing them from occurring. In FMEA, risk evaluation is a vital procedure. Many methods are proposed to address this issue but they have some deficiencies, such as the complex calculation and two adjacent evaluation ratings being considered to be mutually exclusive. Aiming at these problems, in this paper, A novel method to risk evaluation based on D numbers theory is proposed. In the proposed method, for one thing, the assessments of each failure mode are aggregated through D numbers theory. For another, the combination usage of risk priority number (RPN) and the risk coefficient newly defined not only achieve less computation complexity compared with other methods, but also overcome the shortcomings of classical RPN. Furthermore, a numerical example is illustrated to demonstrate the effectiveness and superiority of the proposed method.

scholarly journals Secure PDF Text Steganography by Transforming Secret Into Imperceptible Coding

2020 ◽  
Vol 8 (5) ◽  
pp. 4885-4891
Keyword(s):  
Extraction Process ◽  
Experimental Result ◽  
Computation Complexity ◽  
Hidden Information ◽  
Secret Data ◽  
Hiding Capacity ◽  
Secret Information ◽  
Text Steganography ◽  
Novel Method ◽  
Cross Reference

In this paper, we have proposed an approach of PDF based text Steganography by considering the hiding capacity and security of secret information, and improved imperceptibility of stego-cover file. In proposed approach secret information are transformed into compact and encrypted form of imperceptible coding, and then translated into bits form, thereafter embedded into targeted locations of PDF file by applying new cross-reference coding technique in incremental updates of PDF file with less computation complexity. The proposed extraction process provides authentication of received stego-cover file such that only desired file is accepted for the extraction process otherwise fake file is discarded by recipient. Time complexity has been improved significantly by implementing a novel method of PDF steganography for embedding the secret data. Experimental result demonstrates that proposed method provides efficient algorithms in terms of improved security of hidden information.

scholarly journals SIMILARITIES/DISSIMILARITIES ANALYSIS OF PROTEIN SEQUENCES BASED ON PCA-FFT

2017 ◽  
Vol 25 (01) ◽  
pp. 29-45 ◽  
Author(s):  
PENGYAO PING ◽  
XIANYOU ZHU ◽  
LEI WANG
Keyword(s):  
Principal Component Analysis ◽  
Time Series ◽  
Fourier Transformation ◽  
Protein Sequences ◽  
Principal Component ◽  
Spike Protein ◽  
Fast Fourier Transformation ◽  
Computation Complexity ◽  
Novel Method ◽  
Simulation Results

In this paper, a novel method to analyze the similarity/dissimilarity of protein sequences based on Principal Component Analysis-Fast Fourier Transformation (PCA-FFT) is proposed, in which, the PCA is utilized to transform protein sequences into time series and the FFT is utilized to analyze the time series while considering them as signals. To test the effectiveness of our newly proposed method, it is applied to analyze the similarity/dissimilarity of 16 different ND5 protein sequences and 29 different spike protein sequences, respectively. Furthermore, the correlation analysis is presented for comparing with others methods, and the simulation results show that it has better performances in the aspects of computation complexity and recognition degree than some existing methods.

A novel method for chromatic-dispersion monitoring

2012 ◽  
Vol 285 (13-14) ◽  
pp. 3050-3053
Author(s):  
Lijun Li ◽  
Ge Fan
Keyword(s):  
Chromatic Dispersion ◽  
Novel Method

The removal and morphology of intact biofilms from implanted venous access devices

1995 ◽  
Vol 53 ◽  
pp. 1020-1021
Author(s):  
M.A. Gregory ◽  
G.P. Hadley
Keyword(s):  
Patient Selection ◽  
Surgical Oncology ◽  
Venous Access ◽  
Common Procedure ◽  
Indwelling Catheters ◽  
Careful Patient ◽  
Novel Method ◽  
The Subject ◽  
Vascular Catheters ◽  
Venous Access Devices

The insertion of implanted venous access systems for children undergoing prolonged courses of chemotherapy has become a common procedure in pediatric surgical oncology. While not permanently implanted, the devices are expected to remain functional until cure of the primary disease is assured. Despite careful patient selection and standardised insertion and access techniques, some devices fail. The most commonly encountered problems are colonisation of the device with bacteria and catheter occlusion. Both of these difficulties relate to the development of a biofilm within the port and catheter. The morphology and evolution of biofilms in indwelling vascular catheters is the subject of ongoing investigation. To date, however, such investigations have been confined to the examination of fragments of biofilm scraped or sonicated from sections of catheter. This report describes a novel method for the extraction of intact biofilms from indwelling catheters.15 children with Wilm’s tumour and who had received venous implants were studied. Catheters were removed because of infection (n=6) or electively at the end of chemotherapy.

A Flattened AWG Demultiplexer with Low Chromatic Dispersion

2003 ◽  
Vol 22 (3) ◽  
pp. 141-149
Author(s):  
DAOXIN DAI ◽  
SAILING HE
Keyword(s):  
Chromatic Dispersion
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