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Novel explanation of the Active Galactic Nuclei. The Power Source of Quasars as a result of vacuum polarization by the gravitational singularities on the distributional BHs horizon

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Journal of Physics: Conference Series 2021年第1期1730卷

作者： Jaykov Foukzon Elena R Men'kova Alexander A Potapov Department of mathematics Israel Institute of Technology Haifa 3200003 Israel All-Russian Research Institute for Optical and Physical Measurements Moscow 119361 Russia Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences Moscow 125009 Russia JNU-IREE Joint Laboratory of Fractal Method and Signal Processing Department of Electronic Engineering College of Information Science and Technology Jinan University Guangzhou People's Republic of China

In this paper we argue that the current paradigm for AGN and quasars is essentially incomplete and a rivision is needed. Remind that the current paradigm for AGN and quasars is that their radio emission is explained by synchrotron radiation from relativistic electrons that are Doppler boosted through bulk motion. In this model, the intrinsic brightness temperatures cannot exceed 1011 to 1012 K. Typical Doppler boosting is expected to be able to raise this temperature by a factor of 10. The observed brightness temperature of the most compact structures in BL Lac, constrained by baselines longer than 5.3G, must indeed exceed 2 × 1013K and can reach as high as ˜ 3 × 1014K. This is difficult to reconcile with current incoherent synchrotron emission models from relativistic electrons, requiring alternative models such as emission from relativistic protons. However the proton, as we know, is 1836 times heavier than an electron and absolutely huge energy is required to accelerated it to sublight speed. These alternative models such as emission from relativistic protons can be suported by semiclassical gravity effect finds its roots in the singular behavior of quantum fields on curved distributional space- times presented by rotating gravitational singularities.

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Direct Location for Multiple Passive radars without and with Reference

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Journal of Physics: Conference Series 2019年第1期1169卷

作者： K. K. Song Y. X. Yang H. F. Peng National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu China.

The problem of stationary target location by multiple passive radar sensors that using unknown and non-cooperative opportunity illuminator is considered. Traditional two-step approach which estimating the time difference of arrival (TDOA) and angle of arrival (AOA) firstly and locating using those parameters secondly. We explore the direct location with multiple passive radar sensors without estimating the intermediate parameters. As the reference path from the transmitter to receivers may be blocked in practice, we discuss the both cases that location without and with reference path. Two maximum likelihood algorithms of direct location are proposed for multiple passive radar sensors without and with reference. Monte Carlo simulations indicate that the direct location algorithm is superior to two-step approach with TDOA and AOA at low SNR for multiple passive radar sensors.

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System of control and supervision of the solar distiller to install in Douar Al Hamri of the rural district of Boughriba (Province of Berkane)

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Materials Today: Proceedings 2019年 13卷 587-596页

作者： I. Atmane M. Melhaoui K. Kassmi Z. Mahdi S. Alexopoulos K. Schwarzer H. Chayeb N. Bachiri Mohamed First University Faculty of Science Laboratory of Electromagnetic Signal Processing & Renewable Energy LESPRE Team Electronic Materials & Renewable Energy EMRE Oujda Morocco Association Humain and Environnement of Berkane (AHEB) Berkane Morocco Solar-Institut Jülich (SIJ) FH Aachen Germany Engineering Office of Energy and Environmental Technology (IBEU) Jülich Germany

Climate change and global warming are causing sea level rise and thus the degradation of groundwater quality by excess salt. In this context, the purpose of this work is the establishment of a system for the remote acquisition and supervision of a multi-stage solar distiller to supply drinking water to the Douar Al Hamri in the rural district of Boughriba in the province of Berkane (Oujda Region). The system implemented will allow instantaneous monitoring the operation of the station in real time to ensure the amount and quality of produced fresh water, and remote intervention in case of failure or malfunctioning of the systems. In this paper, after describing the operation of the solar distiller, the structure of its control and supervision system is presented, including: the start-up and shutdown of the distiller, tracking of its functionality, data acquisition, and control connection to the electricity grid or photovoltaic generators.

关键词： Desalination system USB link 3GModem Internet HTTP Protocol Microcontroller Remote supervision and control

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AIM 2019 challenge on real-world image super-resolution: Methods and results

arXiv

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arXiv 2019年

作者： Lugmayr, Andreas Danelljan, Martin Timofte, Radu Fritsche, Manuel Gu, Shuhang Purohit, Kuldeep Kandula, Praveen Suin, Maitreya Rajagopalan, A.N. Joon, Nam Hyung Won, Yu Seung Kim, Guisik Kwon, Dokyeong Hsu, Chih-Chung Lin, Chia-Hsiang Huang, Yuanfei Sun, Xiaopeng Lu, Wen Li, Jie Gao, Xinbo Bell-Kligler, Sefi Computer Vision Lab ETH Zurich Indian Institute Of Technology Madras India Image Communication & Signal Processing Laboratory Hanyang University Seoul Korea Republic of CVML Chung-Ang University Department Management Information Systems National Pingtung University of Science and Technology Department of Electrical Engineering National Cheng-Kung University Xidian University Weizmann Institute of Science Israel

This paper reviews the AIM 2019 challenge on real world super-resolution. It focuses on the participating methods and final results. The challenge addresses the real world setting, where paired true high and low-resolution images are unavailable. For training, only one set of source input images is therefore provided in the challenge. In Track 1: Source Domain the aim is to super-resolve such images while preserving the low level image characteristics of the source input domain. In Track 2: Target Domain a set of high-quality images is also provided for training, that defines the output domain and desired quality of the superresolved images. To allow for quantitative evaluation, the source input images in both tracks are constructed using artificial, but realistic, image degradations. The challenge is the first of its kind, aiming to advance the state-of-the-art and provide a standard benchmark for this newly emerging task. In total 7 teams competed in the final testing phase, demonstrating new and innovative solutions to the problem. Copyright © 2019, The Authors. All rights reserved.

关键词： Optical resolving power

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Robust pulmonary segmentation for chest radiography, combining enhancement, adaptive morphology and innovative active contours

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Research on Biomedical Engineering 2018年第3期34卷 234-245页

作者： Vital, Daniel Aparecido Sais, Barbara Teixeira Moraes, Matheus Cardoso Laboratory of Image and Signal Processing Institute of Science and Technology Federal University of São Paulo São José dos CamposSP Brazil

Introduction: Statistical data reveal that approximately 140 million radiological exams are performed annually in Brazil. These exams are designed to detect and to analyze fractures, caused by different types of trauma;as well as, to diagnose pathologies such as pulmonary diseases. For better visualization of those lesions or abnormalities, methods of image segmentation can be implemented. Such methods lead to the separation of the region of interest, which allows extracting the characteristics and anomalies of the desired tissue. However, the methods developed by researchers in this area still have restrictions. Consequently, we present an automatic pulmonary segmentation approach that overcomes these constraints. Methods: This method is composed of a combination of Discrete Wavelet Packet Frame (DWPF), morphological operations and Gradient Vector Flow (GVF). The methodology is divided into four steps: Pre-processing - the original image is enhanced by discrete wavelet;processing - where occurs a combination of the Otsu threshold with a series of morphological operations in order to identify the pulmonary object;Post-processing - an innovative form of using GVF improves the binary information of pulmonary tissue, and;Evaluation – the segmented images were evaluated for accuracy of detection the pulmonary region and border. Results: The evaluation was carried out by segmenting 247 digital X-ray challenging images of the thorax human. The results show high for values of Overlap (97,63% ± 3.34%), and Average Contour Distance (0.69mm ± 0.95mm). Conclusion: The results allow verifying that the proposed technique is robust and more accurate than other methods of lung segmentation, besides being a fully automatic method of lung segmentation. © 2018, Brazilian Society of Biomedical Engineering. All Rights Reserved.

关键词： Image segmentation

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The design and synchronous control of a new lower back exoskeleton

The design and synchronous control of a new lower back exosk...

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第37届中国控制会议

作者： Yujuan SUN Haoping WANG Yang TIAN Nanjing University of Science ＆ Technology School of AutomationSino-French International Joint Laboratory of Automatic Control and Signal Processing（LaFCAS）

A new wearable power assist device for lower back support is proposed in this *** waist power assist suit is designed to relieve lower back pain and it is equipped with four push rods to realize the three-dimensional rotation around the human waist *** model of the device including the kinematics and the dynamics is presented on the basis of the freedom analysis.A kind of lumbar rehabilitation movement is put *** ensure the coordination work of the four motors,an improved mean deviation coupling control strategy is proposed in this *** demonstrate the effectiveness of the proposed synchronous control strategy,simulation is carried out in Matlab/Simulink and the simulation results show better performances than the compared deviation coupling cooperative control.

关键词： lower back exoskeleton Kinematics dynamics mean deviation coupling cooperative control

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Trajectory Tracking Control of a Stratospheric Airship with Fuzzy Sliding mode Control

Trajectory Tracking Control of a Stratospheric Airship with ...

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第37届中国控制会议

作者： Shuyu Yao Haoping Wang Yang Tian Nanjing University of Science ＆ Technolog Sino-French International Joint Laboratory of Automatic Control and Signal Processing （LaFCAS）Nanjing University of Science and Technology

This paper considers a fuzzy sliding mode control for the trajectory tracking control of a stratospheric airship. Firstly,dynamic modeling and kinematic modeling of the stratospheric airship are proposed. Secondly, the design and stability analysis of the controller are given. Finally, numerical simulations are presented to demonstrate the performance of the proposed controller, and the simulation results indicate that fuzzy sliding mode control reduces chattering effectively and ensures faster convergence and better tacking precision against sliding mode control（SMC）.

关键词： Stratospheric airship Trajectory tracking control Fuzzy sliding mode control

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Welcome Messages from BigTrust 2018

Proceedings - 15th IEEE International Conference on Mobile A...

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Proceedings - 15th IEEE International Conference on Mobile Ad Hoc and Sensor Systems, MASS 2018 2018年 XXVII页

作者： Liu, Qin Jiang, Wenjun Bhuiyan, Md Zakirul Alam You, Ling Xiao, Mingjun Hunan University China Fordham University United States National Key Laboratory of Science and Technology on Blind Signal Processing China University of Science and Technology of China China

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A proper version of synthesis-based sparse audio declipper

arXiv

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arXiv 2018年

作者： Záviška, Pavel Rajmic, Pavel Mokrý, Ondřej Průša, Zdeněk Signal Processing Laboratory Brno University of Technology Brno Czech Republic Acoustics Research Institute Austrian Academy of Science Vienna Austria

Methods based on sparse representation have found great use in the recovery of audio signals degraded by clipping. The state of the art in declipping within the sparsity-based approaches has been achieved by the SPADE algorithm by Kitić et. al. (LVA/ICA'15). Our recent study (LVA/ICA'18) has shown that although the original S-SPADE can be improved such that it converges faster than the A-SPADE, the restoration quality is significantly worse. In the present paper, we propose a new version of S-SPADE. Experiments show that the novel version of S-SPADE outperforms its old version in terms of restoration quality, and that it is comparable with the A-SPADE while being even slightly faster than A-SPADE. Copyright © 2018, The Authors. All rights reserved.

关键词： Restoration

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Dynamic range impact on 3D MIMO channel characteristics in rural-macro scenario at 3.5 GHz 12

Dynamic range impact on 3D MIMO channel characteristics in r...

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12th European Conference on Antennas and Propagation, EuCAP 2018

作者： Zhang, Weite Tian, Lei Wu, Zhongyuan Zhang, Jianhua Zheng, Yi Cao, Jingmin Key Lab of Universal Wireless Communications Ministry of Education China State Key Lab of Networking and Switching Technology Beijing University of Posts and Telecommunications Mailbox NO.92 Beijing100876 China China Mobile Research Institude Beijing China National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu Sichuan China

ISBN: (纸本)9781785617911

Rural-macro (RMa) is an important scenario for fifth generation (5G) deployment, and there is a strong diffraction in RMa making it difficult to distinguish between line-of-sight (LoS) and non-line-of-sight (NLoS) case. Since the environmental condition is closely related to the dynamic range of channel impulse response (CIR), this paper studies the dynamic range impact on characteristics of three dimensional (3D) multiple-input multiple-output (MIMO) channels based on 3.5 GHz measurement campaign in RMa. The space-alternating generalized expectation-maximization (SAGE) algorithm is employed to estimate multipath component parameters. The channel statistical characteristics, channel capacity and eigenvalues of CIR matrix are calculated for different CIR dynamic ranges. The results show that the delay spread, the angle spread, the channel capacity and the sub-channel correlation are linearly related to the dynamic range of CIR. Thus, the results give a new perspective to study channel characteristics based on CIR dynamic range in RMa scenario. © 2018 Institution of Engineering and *** Rights Reserved.

关键词： Channel capacity

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