Application of the local Markov approximation method for the analysis of information processes processing algorithms with unknown discontinuous parameters under violation of the consistency property of their estimates

2014 ◽  
Vol 8 ◽  
pp. 6267-6294 ◽  
Author(s):  
O. V. Chernoyarov ◽  
Sai Si Thu Min ◽  
Yu. A. Guseva ◽  
B. I. Shakhtarin ◽  
A. A. Artemenko
Keyword(s):  
Approximation Method ◽  
Markov Approximation ◽  
Information Processes ◽  
Consistency Property ◽  
Processing Algorithms ◽  
Discontinuous Parameters

scholarly journals Markov Approximation Method for Optimal Service Orchestration in IoT Network

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 49538-49548 ◽  
Author(s):  
Wenchen He ◽  
Shaoyong Guo ◽  
Yun Liang ◽  
Xuesong Qiu
Keyword(s):  
Approximation Method ◽  
Markov Approximation ◽  
Service Orchestration ◽  
Optimal Service

A Linear Spline Markov Approximation Method for Random Maps with Position Dependent Probabilities

2020 ◽  
Vol 30 (03) ◽  
pp. 2050046
Author(s):  
Congming Jin ◽  
Jiu Ding
Keyword(s):  
Theoretical Analysis ◽  
Approximation Method ◽  
Chaotic Maps ◽  
Type Inequality ◽  
Markov Operator ◽  
Markov Approximation ◽  
Random Maps ◽  
Linear Spline ◽  
Finite Approximation ◽  
Better Than

We present a rigorous convergence analysis of a linear spline Markov finite approximation method for computing stationary densities of random maps with position dependent probabilities, which consist of several chaotic maps. The whole analysis is based on a new Lasota–Yorke-type inequality for the Markov operator associated with the random map, which is better than the previous one in the literature and much simpler to obtain. We also present numerical results to support our theoretical analysis.

scholarly journals New far-field extrapolation method for the computation of electric fields

2021 ◽  
Vol 51 (3) ◽  
Author(s):  
Xin Yang
Keyword(s):  
Electric Fields ◽  
Approximation Method ◽  
Time Domain ◽  
Far Field ◽  
Field Calculation ◽  
The Third ◽  
Scattering Field ◽  
Engineering Problems ◽  
Consistency Property ◽  
The Time Domain

The extrapolation of the electric field is studied theoretically both in frequency domain and time domain. Combining Gauss’s law with the approximation method in engineering, two new formulas for the scattering field calculation are derived from different logical ideas based on Stratton–Chu formula. The consistency property of the derived formulas is investigated, and the third formula for the scattering field calculation is further obtained. Finally, the time-domain extrapolation is discussed based on the formulas, followed by a simple numerical example. The results obtained are characterized by a simple form and intuitive physical meaning, and are helpful to calculate certain engineering problems.

Otoconia perfect/imperfect crystals

1994 ◽  
Vol 52 ◽  
pp. 42-43
Author(s):  
César D. Fermin ◽  
Dale Martin
Keyword(s):  
Image Processing ◽  
Room Temperature ◽  
Phosphotungstic Acid ◽  
Gallus Domesticus ◽  
Crystal Matrix ◽  
Organic Templates ◽  
Image Processing Algorithms ◽  
Processing Algorithms ◽  
Diffraction Patterns

Otoconia of higher vertebrates are interesting biological crystals that display the diffraction patterns of perfect crystals (e.g., calcite for birds and mammal) when intact, but fail to produce a regular crystallographic pattern when fixed. Image processing of the fixed crystal matrix, which resembles the organic templates of teeth and bone, failed to clarify a paradox of biomineralization described by Mann. Recently, we suggested that inner ear otoconia crystals contain growth plates that run in different directions, and that the arrangement of the plates may contribute to the turning angles seen at the hexagonal faces of the crystals.Using image processing algorithms described earlier, and Fourier Transform function (2FFT) of BioScan Optimas®, we evaluated the patterns in the packing of the otoconia fibrils of newly hatched chicks (Gallus domesticus) inner ears. Animals were fixed in situ by perfusion of 1% phosphotungstic acid (PTA) at room temperature through the left ventricle, after intraperitoneal Nembutal (35mg/Kg) deep anesthesia. Negatives were made with a Hitachi H-7100 TEM at 50K-400K magnifications. The negatives were then placed on a light box, where images were filtered and transferred to a 35 mm camera as described.

Analysis of field uniformity and quantitative evaluation of subsurface pitting corrosion in conductors via GPEC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 19-29
Author(s):  
Shuting Ren ◽  
Yong Li ◽  
Bei Yan ◽  
Jinhua Hu ◽  
Ilham Mukriz Zainal Abidin ◽  
...  
Keyword(s):  
Quantitative Evaluation ◽  
Eddy Current ◽  
Pitting Corrosion ◽  
Gradient Field ◽  
Uniform Field ◽  
Eddy Current Method ◽  
Optimal Position ◽  
Pulsed Eddy Current ◽  
Field Uniformity ◽  
Processing Algorithms

Structures of nonmagnetic materials are broadly used in engineering fields such as aerospace, energy, etc. Due to corrosive and hostile environments, they are vulnerable to the Subsurface Pitting Corrosion (SPC) leading to structural failure. Therefore, it is imperative to conduct periodical inspection and comprehensive evaluation of SPC using reliable nondestructive evaluation techniques. Extended from the conventional Pulsed eddy current method (PEC), Gradient-field Pulsed Eddy Current technique (GPEC) has been proposed and found to be advantageous over PEC in terms of enhanced inspection sensitivity and accuracy in evaluation and imaging of subsurface defects in nonmagnetic conductors. In this paper two GPEC probes for uniform field excitation are intensively analyzed and compared. Their capabilities in SPC evaluation and imaging are explored through simulations and experiments. The optimal position for deployment of the magnetic field sensor is determined by scrutinizing the field uniformity and inspection sensitivity to SPC based on finite element simulations. After the optimal probe structure is chosen, quantitative evaluation and imaging of SPC are investigated. Signal/image processing algorithms for SPC evaluation are proposed. Through simulations and experiments, it has been found that the T-shaped probe together with the proposed processing algorithms is advantageous and preferable for profile recognition and depth evaluation of SPC.

ROBOTICS PROJECTS IN SCHOOL INFORMATICS COURSE

2019 ◽  
pp. 52-56
Author(s):  
V. V. Tarapata
Keyword(s):  
Information Transmission ◽  
Educational Robotics ◽  
Project Approach ◽  
Teaching Tools ◽  
Modern School ◽  
Research Activities ◽  
Information Processes ◽  
History Of ◽  
Normative Basis ◽  
Typical Model

The article describes the prerequisites for the use of educational robotics in the school course of informatics, the history of the development of its directions and the normative basis for its use in modern school education. A typical model of an educational robotic project for the organization of research and project activities of students has been proposed. The technological chart of the lesson as an example of the implementation of a robotic project in the framework of the research activities on informatics is considered. Approaches to the organization of educational activities, teaching tools and ways of evaluation in informatics class on the theme “Information processes. Information transmission” when using the project approach are described.

Using the Combination of GM(1,1) and Taylor Approximation Method to Predict the Academic Achievement of Student

2014 ◽  
Vol 1 (2) ◽  
pp. 55-69 ◽  
Author(s):  
Phuoc-Hai Nguyen ◽  
◽  
Tian-Wei Sheu ◽  
Phung-Tuyen Nguyen ◽  
Duc-Hieu Pham ◽  
...  
Keyword(s):  
Academic Achievement ◽  
Approximation Method ◽  
Taylor Approximation
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