scholarly journals The Rule of Hessenberg Matrix for Computing Determinant of Centrosymmetric Matrices

CAUCHY ◽  
2020 ◽  
Vol 6 (3) ◽  
pp. 140-148
Author(s):  
Nur Khasanah ◽  
Agustin Absari Wahyu Kuntarini
Keyword(s):  
Special Structure ◽  
Basic Rule ◽  
Computational Process ◽  
Hessenberg Matrix ◽  
Centrosymmetric Matrix

The application of centrosymmetric matrix on engineering take their part, particulary about determinat rule. This basic rule needs computational process for determining appropiate algorithm. Therefore, by the algorithm of determinant kind of Hessenberg matrix, this is used for computing determinant of centrosymmetric matrix more efficiently. This paper shows the algorithm of lower Hessenberg and sparse Hessenberg matrix to construct the efficient alforithm of determinant of centrosymmetric matrix. By using the special structure of centrosymmetric matrix, the algorithm of these determinant are usefull for their own characterstics.

An Iterative Algorithm on the Spectral Radius of a Kind of Centrosymmetric Matrix

2013 ◽  
Vol 659 ◽  
pp. 108-112
Author(s):  
Di Zhao ◽  
Hong Yi Li
Keyword(s):  
Spectral Radius ◽  
Iterative Algorithm ◽  
Special Structure ◽  
Computation Cost ◽  
Reduction Property ◽  
Centrosymmetric Matrix

This article bases on the reduction property of the centrosymmetric matrix. We analyze the method of computing the spectral radius of the inverse M-matrices, and present an iterative algorithm for the spectral radius of a kind of centrosymmetric matrices with special structure. We show that the computation cost will be reduced significantly by using this algorithm.Introduction and Preliminaries

Test on Sound Transmission Characteristic of PTFE Micro-Aperture Membrane

2009 ◽  
Vol 60-61 ◽  
pp. 146-150 ◽  
Author(s):  
Wan Feng Lin ◽  
Wen Zhong Lou ◽  
Jing Xu ◽  
Ren Long Song ◽  
Liang Hu
Keyword(s):  
Test Data ◽  
Sound Transmission ◽  
Special Structure ◽  
Basic Rule ◽  
Transmission Characteristic ◽  
Aperture Diameter

: It is a test of sound transmission characteristic of PTFE Micro-aperture Membrane,through it we found that the PTFE Micro-aperture Membrane is an excellent material of sound transmission for its special structure, though the basic rule is of no difference from normal material. Something more important, from test data, it was discovered that PTFE will not affect sound transmission when aperture diameter reaches 0.22m, which is valuable for the research of sound transmission on Micro-aperture.

Red phosphorus embedded in TiO2/C nanofibers to enhance the potassium-ion storage performance

Nanoscale ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 6635-6643
Author(s):  
Die Su ◽  
Jing Dai ◽  
Min Yang ◽  
Jiaxing Wen ◽  
Jianping Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electronic Conductivity ◽  
Potassium Ion ◽  
Special Structure ◽  
Red Phosphorus ◽  
Storage Performance ◽  
Ion Storage

TiO2-RP/CN was fabricated and found to possess a special structure and an excellent electronic conductivity, and the electrodes show outstanding energy storage in K half/full cells.

scholarly journals Noise-Reducing Fabric Electrode for ECG Measurement

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4305
Author(s):  
Takamasa Terada ◽  
Masahiro Toyoura ◽  
Takahide Sato ◽  
Xiaoyang Mao
Keyword(s):  
Special Structure ◽  
Electrode Impedance ◽  
Electrode Structure ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Chip Type ◽  
Low Pass ◽  
Filter Fabric

In this work, we propose a fabric electrode with a special structure that can play the role of a noise reduction filter. Fabric electrodes made of the conductive fabric have been used for long-term ECG measurements because of their flexibility and non-invasiveness; however, due to the large impedance between the skin and the fabric electrodes, noise is easily introduced into the ECG signal. In contrast to conventional work, in which chip-type passive elements are glued to the electrode to reduce noise, the proposed electrode can obtain a noise-reduced ECG by changing the structure of fabric. Specifically, the proposed electrode was folded multiple times to form a capacitor with a capacitance of about 3 nF. It is combined with the skin-electrode impedance to form a low-pass filter. In the experiment, we made a prototype of the electrodes and measured ECG at rest and during EMG-induced exercise. As a result, the SNR values at rest and during exercise were improved about 12.02 and 10.29 , respectively, compared with the fabric electrode without special structure. In conclusion, we have shown that changing the fabric electrode structure effectively removes noise in ECG measurement.

Computational process optimization of array edges

2012 ◽  
Author(s):  
Bernd Küchler ◽  
Artem Shamsuarov ◽  
Thomas Mülders ◽  
Ulrich Klostermann ◽  
Seung-Hune Yang ◽  
...  
Keyword(s):  
Process Optimization ◽  
Computational Process

Analysis of Convective-Radiative Fins by Using Hybrid Spline Difference Method

2013 ◽  
Vol 284-287 ◽  
pp. 3345-3351
Author(s):  
Chi Chang Wang ◽  
Wu Jung Liao ◽  
Lu Ping Chao
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Finite Difference Method ◽  
Difference Method ◽  
Radiative Heat ◽  
High Accuracy ◽  
Spline Method ◽  
Computational Process ◽  
Numerical Accuracy ◽  
Constant Heat

This study used rectangular fins with constant heat transfer coefficient as material to discuss convective and radiative heat transfer, so as to prove that the hybrid spline difference method proposed in this study is an easy to operate method with high accuracy. According to the computational process described in this paper, the hybrid spline difference method is as simple as finite difference method and is easy to use. The complex computational process of traditional spline method can be simplified by using this method, but the numerical accuracy can be increased to second order. Therefore, the high accuracy numerical method of hybrid spline difference method replacing traditional spline method for future heat transfer analyses is expectable.

Porous N-doped graphitic carbon assembled one-dimensional hollow structures as high performance electrocatalysts for ORR

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12467-12471 ◽  
Author(s):  
Qiong Luo ◽  
Liyong Chen ◽  
Binhua Duan ◽  
Zhizhi Gu ◽  
Jing Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Graphitic Carbon ◽  
Special Structure ◽  
Dimensional Structure ◽  
Template Method ◽  
One Dimensional ◽  
Sacrificial Template ◽  
Hollow Structures ◽  
Electrocatalytic Performance ◽  
Hierarchical Porous

Hierarchical porous and hollow N-doped graphitic carbon with one-dimensional structure was successfully achieved by a sacrificial template method, and exhibited an enhanced electrocatalytic performance towards ORR due to its special structure.

Sign in / Sign up

Export Citation Format

Share Document