International Journal of Circuits, Systems and Signal Processing

  
ISSN: 1998-4464
Volume 14, 2020

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of NAUN Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.

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Volume 14, 2020


Title of the Paper: Latency and Reliability Improvements of High Critical Tasks in Mixed Criticality Systems

 

Authors: Hakduran Koc, Vamsi Krishna Karanam

Pages: 561-570

https://doi.org/10.46300/9106.2020.14.72

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Abstract: Reliability and execution latency of high critical tasks are crucial for a successful execution in a mixed criticality system with tight design constraints. In this paper, we focus on two main design problems, namely latency-constrained maximum reliability problem and reliability-constrained minimum latency problem, for the applications running tasks of different criticality. The target architecture can run in two operating modes: low criticality mode (normal operating mode) and high criticality mode. For the former problem, we first find the minimum execution latency assuming the system runs in low criticality mode. Then, using this latency as lower bound, we present a heuristic algorithm to improve the reliability of high critical tasks in the application. The proposed algorithm assigns high critical tasks to the highest reliable processing elements in the technology library, and then, schedules low critical tasks without exceeding the given latency constraint. Similarly, for the latter problem, we first determine the highest reliability assuming the system runs in low criticality mode. Then, considering the overall system reliability, the proposed approach reduces the latest completion time of high critical tasks by giving them priority over low critical ones when selecting processing elements. The experimental evaluation conducted using task graphs shows up to 14.69% reliability improvement and 20.05%, on the average, latency improvement for the high critical tasks in the system


Title of the Paper: The Generalized Haar Spaces and Their Adaptive Decomposition

 

Authors: A.Yuri K.Demjanovich, Tatjana A.Safonova, Mikhail A.Terekhov, V. Belyakova

Pages: 548-560

https://doi.org/10.46300/9106.2020.14.71

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Title of the Paper: DC-DC converter Topologies for LED Driver Circuit: A Review

 

Authors: Deepak Agrawal, Rajneesh Kumar Karn, Deepak Verma, Rakeshwri Agrawal

Pages: 542-547

https://doi.org/10.46300/9106.2020.14.70

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Abstract: It has been noticed that in commercial lighting, in terms of efficiency light-lamps based on light-emitting diodes(LEDs) are far better as compared to those where traditional high-pressure sodium (HPS) lamps which are still in use in major underdeveloped and developing areas worldwide in specifically street lighting. The LED driver is an electrical device which controls power flow to the single LED or a string of the LEDs or controls to the current flowing through the LEDs. Available conventional topologies for LED drivers have several demerits such as flickering issues, high losses, luminance problems, low power factor, more number of switches etc. So, the need of the hour is to develop efficient, compact, long lifetime, high power factor and flicker-free LED drivers. The LED have numerous advantages such as high luminous efficiency, life span and it has no mercury in its composition. Therefore, recently researchers of this area has been setting a goal to utilize LED as a good alternative to save electricity from major parts of this planet.In this paper, various topologies of LED drivers are presented. This paper also portrays simulation of a LED driver which is based on the combination of the buck-boost converter as power factor correction stage (PFC) and buck converter as dc-dc power conversion (PC) stage. Both the stages are integrated using single switch only so it is basically integrated LED driver circuit.


Title of the Paper: Study of Temporal Correlations in the Urban Noise Monitoring Networkof Milan, Italy

 

Authors: Roberto Benocci, H. Eduardo Roman, Chiara Confalonieri, Giovanni Zambon

Pages: 533-541

https://doi.org/10.46300/9106.2020.14.69

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Abstract: The European Life project, called DYNAMAP, has been devoted to provide a realimage of the noise generated by vehicular trafficin urban and suburban areas, developing a dynamic acoustic map based on a limited numberof low-cost permanent noise monitoring stations.In the urban area of Milan, the system has beenimplemented over the pilot area named Area 9.Traffic noise data, collected by the monitoringstations, each one representative of a numberof roads with similar characteristics (e.g. dailytraffic flow), are used to build-up a “real time”noise map. DYNAMAP has a statistical structure and this implies that information capturedby each sensor must be representative of an extended area, thus uncorrelated from other stations. The study of the correlations among thesensors represents a key-point in designing themonitoring network. Another important aspectregards the “contemporaneity” of noise fluctuations predicted by DYNAMAP with those effectively measured at an arbitrary location. Integration times heavily affect the result, with correlation coefficients up to 0.8-0.9 for updating timesof 1h. Higher correlations are observed when averaging over groups of roads with similar traffic flow characteristics


Title of the Paper: Research on Supply Chain Architecture Oflogistics Network Platform Based on Blockchain Technology

 

Authors: Lijuan Liu, Chao Li

Pages: 526-532

https://doi.org/10.46300/9106.2020.14.68

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Abstract: With the development of productivity, supply chaincame into being. This study briefly introduced the blockchain andsupply chain technology, constructed the blockchain-based supplychain logistics platform for managing the information of the supplychain, carried out the interface test on the logistics platform system inthe laboratory, and made an analysis by taking XX flour factory inSichuan province as an example. The laboratory interface test resultsshowed that the system platform could be normally applied to the flourfactory’s supply chain management. The case analysis results showedthat the supply chain that applied blockchain technology couldeffectively resist abnormal data modification to ensure the reliability ofsupply chain information and quickly trace the supply chain problemsto improve the efficiency of supply chain management.


Title of the Paper: Research on E-commerce Payment Security and Privacy Protection Based on Improved B2C Model

 

Authors: Zhihe Wang

Pages: 520-525

https://doi.org/10.46300/9106.2020.14.67

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Abstract: The popularity of Internet and mobile terminals promotes the development of e-commerce. However, e-commerce which is not necessary to face to face poses a major challenge to the payment security and privacy protection of consumers. This paper briefly introduces the traditional business to customer (B2C) e-commerce model. A third-party privacy server was introduced to provide a double encryption algorithm for the model, and then the traditional and improved B2C models were simulated to verify the performance of the two models in the confidentiality of the transaction information and the security of the transaction information transmission process. The results showed that the intruder could not directly obtain the sensitive privacy information such as payment information and order information of consumers even if he invaded the database of the online store when the improved B2C model was used; after the transaction information was intercepted and decrypted under the two B2C models, the decryption integrity decreased with the increase of the transaction information quantity, while under the same transaction information quantity, the decryption integrity of the improved B2C model was lower


Title of the Paper: A Novel Way to Select the Optimal Electrical Power Demand Management Provider for Robust Smart Grid

 

Authors: Kyoung Jong Park

Pages: 511-519

https://doi.org/10.46300/9106.2020.14.66

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Abstract: The smart grid is an integrated management of power demand and supply that cannot be achieved without efficient power demand management because it integrates information technology and shares power information in real time to maximize power efficiency. Efficient power demand management must prevent or minimize risks in advance between the customer and the demand management provider. This study proposes a method that can evaluate the risks that impede efficient power demand management and select the most robust demand management provider with respect to these risks. This paper applies the Grey system theory to obtain objectivity by calculating the quantitative value and risk ambiguity of uncertainty. Six power demand management service providers are evaluated through the opinion of four risk management experts considering eight risk factors with a view to selecting the optimum power demand management service provider for the consumer. In conclusion, this study applies the Grey system theory to the risk factors of six power demand management service providers, determines the ranking from the best power demand management service provider to the inferior power demand management service provider, and provides the most desirable provider to customers.


Title of the Paper: A Multi Fusion Data Mining Algorithm for Solar Energy Efficiency

 

Authors: Yue Lin, Zhan Shuo, Bai Jing, Kanae Shunshoku

Pages: 499-510

https://doi.org/10.46300/9106.2020.14.65

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Abstract: The output power of renewable energy has the characteristics of random fluctuation, which have the harmful effect on stability of renewable power grid and causes the problem of low utilization ratio on renewable energy output power. Thus, this paper proposed a method to predict the output power of renewable energy based on data mining technology. Data mining is performed using linear regression algorithm, decision tree, and random forest. The simulation experiment results show the variation of solar radiation size and inclination angle, which improves solar panel position control accuracy and solar energy utilization in solar photovoltaic power generation systems. And this provides the scientific basis for theory and application of the efficiency of utilizing solar energy.


Title of the Paper: Radiated Susceptibility Analysis of Single-wire Transmission Lines by Means of Modified Stochastic Reduced-order Modeling

 

Authors: Diego Bellan

Pages: 492-498

https://doi.org/10.46300/9106.2020.14.64

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Abstract: This work investigates the statistical radiated susceptibility of an electrically-short transmission line (TL) consisting of a single wire over a ground plane. The angular parameters of the impinging plane wave and the height of the wire over the ground plane are modelled as random variables with Gaussian/Uniform distributions. The statistical properties of the current in the TL terminations (i.e., mean value, standard deviation, and cumulative distribution function) are derived through a properly defined numerical methodology consisting in a modified version of the conventional Stochastic Reduced-Order Model (SROM) approach. The proposed methodology consists in a straightforward approximation of the input continuous random variables with small-size discrete random variables. In contrast with conventional SROM, no numerical pre-processing is needed. The modified SROM proposed in this paper demonstrates high efficiency when compared with classical Monte Carlo approach. The proposed technique can be applied to the statistical analysis of much more complex systems whose input/output relationship requires a huge computational burden and for which the conventional Monte Carlo approach is not suitable.


Title of the Paper: A Vision Calibration Method of Robot based on Halcon

 

Authors: Cheng Gao

Pages: 482-491

https://doi.org/10.46300/9106.2020.14.63

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Abstract: Visual calibration is an important research direction in the field of robot vision control, and is also one of the current research hotspots. In this paper, the principle of software calibration is described in detail, and a software calibration method based on Halcon optimization is studied and designed. By using the operator in the function library, the internal and external parameters of the camera are calibrated. The influence of the terminal center of the robot and the radial distortion of the camera lens is fully considered. The method is used to establish the camera. The relationship between the image coordinated system and the robot world coordinated system. Experiments show that the method has high calibration accuracy and practicability, and is suitable for industrial robot vision system calibration.


Title of the Paper: Semi-supervised Optimization Algorithm Based on Laplacian Eigenmaps

 

Authors: Qinjuan Luo, Jian Wen, Yutong Wu, Mingkai Wang

Pages: 474-481

https://doi.org/10.46300/9106.2020.14.62

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Abstract: As a member of many dimensionality reduction algorithms, manifold learning is the hotspot of recent dimensionality reduction algorithm. Despite it is good at retaining the original space structure, there is no denying that its effect of classifying still has room for improvement. Based on Laplacian Eigenmap, which is one of the manifold learning algorithm, this paper committed to optimize the algorithm combined with a semi-supervised learning ideas, which can improve the recognition rate. Finally, the better method of two forms is tested in the surface electromyography system and plant leaf identification system. The experimental results show that this semi-supervised method does well in classifying


Title of the Paper: Approximations With Polynomial, Trigonometric, Exponential Splines of the Third Order and Boundary Value Problem

 

Authors: I.G.Burova, E.F.Muzafarova

Pages: 460-473

https://doi.org/10.46300/9106.2020.14.61

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Abstract: This paper is devoted to the construction of local approximations of functions of one and two variables using the polynomial, the trigonometric, and the exponential splines. These splines are useful for visualizing flows of graphic information. Here, we also discuss the parallelization of computations. Some attention is paid to obtaining two-sided estimates of the approximations using interval analysis methods. Particular attention is paid to solving the boundary value problem by using the polynomial splines and the trigonometric splines of the third and fourth order approximation. Using the considered splines, formulas for a numerical differentiation are constructed. These formulas are used to construct computational schemes for solving a parabolic problem. Questions of approximation and stability of the obtained schemes are considered. Numerical examples are presented.


Title of the Paper: Three-channel Laser Diode Driver for Multimedia Laser Projectors

 

Authors: Svetozar Ilchev, Rumen Andreev, Zlatoliliya Ilcheva, Ekaterina Otsetova-Dudin

Pages: 451-459

https://doi.org/10.46300/9106.2020.14.60

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Abstract: The paper describes the design, implementation andtest results of a three-channel laser diode driver intended for use inmultimedia laser projectors. Our development goals were to create acompact and power-efficient driver, which achieves good colormixing and supports high modulation frequencies. It is compatiblewith most laser diode configurations used in multimedia laserprojectors with a total optical output power of several watts. Thedriver is equipped with three protected signal modulation inputs. Itneeds a single regulated power supply between 9V and 18V andcontrols up to three cooling fans intended for the thermalmanagement of the laser diodes. Our initial tests show that the driverworks very well and is suitable for the long-term operation inprojector systems. In the future, we plan to perform more tests on thesignal feedback for various input signal combinations, which shouldresult in optimizations of the feedback configuration andimprovements of the modulation response of the driver.


Title of the Paper: Continuous Local Splines of the Fourth Order of Approximation and Boundary Value Problem

 

Authors: I.G.Burova

Pages: 440-450

https://doi.org/10.46300/9106.2020.14.59

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Abstract: This paper discusses the construction of polynomial and non-polynomial splines of the fourth order of approximation. The behavior of the Lebesgue constants for the left, the right, and the middle continuous cubic polynomial splines are considered. The non-polynomial splines are used for the construction of the special central difference approximation. The approximation of functions, and the solving of the boundary problem with the polynomial and non-polynomial splines are discussed. Numerical examples are done.


Title of the Paper: The Effect of Tourism Development on Economic Growth in Taiwan: Export Growth as Mediator

 

Authors: Tzu-Kuang Hsu, I-Hsun Tsai

Pages: 435-439

https://doi.org/10.46300/9106.2020.14.58

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Abstract: In this paper, we employed an innovative method, called a quantile mediation analysis, which combines a quantile regression and mediation analysis to examine the impact of tourism development on economic growth whether through export growth or not from 1990 to 2018 in Taiwan. The result of the traditional ordinary least square approach shows that Taiwan’s tourism development affects economic growth through the full mediation effect of export growth for the period of 1990-2018 and there is no direct relation from tourism development to economic growth. Moreover, the results of this innovative analysis indicate that Taiwan’s tourism development also affects economic growth through the full mediation effect of export growth at below 0.6 distributions of economic growth, but at above 0.6 distributions of economic growth, there exist direct and partially indirect effect from tourism development to economic growth. From the results, we suggest that Taiwan’s government should focus on the export growth if she wants to promote Taiwan’s economic growth when the economy is in a recession, not focus on tourism development.


Title of the Paper: Sharp Bounds on the Spectral Radius of Nonnegative Matrices and Comparison to the Frobenius’ Bounds

 

Authors: Maria Adam, Nicholas Assimakis, Fotis Babouklis

Pages: 423-434

https://doi.org/10.46300/9106.2020.14.57

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Abstract: In this paper, a new upper bound and a new lower bound for the spectral radius of a nοnnegative matrix are proved by using similarity transformations. These bounds depend only on the elements of the nonnegative matrix and its row sums and are compared to the well-established upper and lower Frobenius’ bounds. The proposed bounds are always sharper or equal to the Frobenius’ bounds. The conditions under which the new bounds are sharper than the Frobenius' ones are determined. Illustrative examples are also provided in order to highlight the sharpness of the proposed bounds in comparison with the Frobenius’ bounds. An application to linear invariant discrete-time nonnegative systems is given and the stability of the systems is investigated. The proposed bounds are computed with complexity O(n2).


Title of the Paper: Retinal Image Enhancement using Ordering Gap Adjustment and Brightness Specification

 

Authors: P. Vonghirandecha, S. Kansomkeat, S. Intajag

Pages: 414-422

https://doi.org/10.46300/9106.2020.14.56

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Abstract: Color retinal image enhancement plays an important role in improving an image quality suited for reliable diagnosis. For this problem domain, a simple and effective algorithm for image contrast and color balance enhancement namely Ordering Gap Adjustment and Brightness Specification (OGABS) was proposed. The OGABS algorithm first constructs a specified histogram by adjusting the gap of the input image histogram ordering by its probability density function under gap limiter and Hubbard’s dynamic range specifications. Then, the specified histograms are targets to redistribute the intensity values of the input image based on histogram matching. Finally, color balance is improved by specifying the image brightness based on Hubbard’s brightness specification. The OGABS algorithm is implemented by the MATLAB program and the performance of our algorithm has been evaluated against data from STARE and DiaretDB0 datasets. The results obtained show that our algorithm enhances the image contrast and creates a good color balance in a pleasing natural appearance with a standard color of lesions.


Title of the Paper: Image Classification Search System based on Deep Learning Method

 

Authors: Zhang Lin, Yang Fengshang

Pages: 407-413

https://doi.org/10.46300/9106.2020.14.55

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Abstract: Image classification is to distinguish different types of images based on image information. It is an important basic issue in computer vision, and is also the fundamental for image detection, image segmentation, object tracking, and behavior analysis. Deep learning is a new field in machine learning research. Its motivation is to simulate the neural network of the human brain for analytical learning. Like the human brain, deep learning can interpret the data of images, sounds, and texts. The system is based on the Caffe deep learning framework. Firstly, the data set is trained and analyzed, and a model based on deep learning network is built to obtain the image feature information and corresponding data classification. Then the target image is expanded based on the bvlc-imagenet training set model, and finally achieve "search an image with an image" web application.


Title of the Paper: An Illumination Estimation Algorithm based on Outdoor Scene Classification

 

Authors: Ning Li, Chunxiao Li, Songnan Chen, Jiangming Kan

Pages: 400-406

https://doi.org/10.46300/9106.2020.14.54

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Abstract: The illumination estimation algorithm belongs to the field of color constancy, aiming to restoring the color of image through estimating the RGB of scene illumination. In different scenarios, the performance of a general algorithm varies greatly. If the scene can be predicted, it can be inferred that the scenarios related optimal algorithms is better than a general algorithm for estimating illumination. In this paper, a novel algorithm based on outdoor scene classification was proposed: firstly, the support vector machine (svm) classifiers was used to identify scene types , and then the scenarios related optimal algorithms was selected, finally used the RGB values of scene illumination were calculated.


Title of the Paper: Robust Signals Detection Algorithm Based on Cyclostationarity in Impulsive Noise

 

Authors: Shun Na, Penghui Li, Jing Zhang, Yang Liu, Yong Tie, Yongjun Jia

Pages: 392-399

https://doi.org/10.46300/9106.2020.14.53

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Abstract: A robust method for detecting the communication signals impinging on an antenna with interference and non-Gaussian impulsive noise is introduced in this paper. Degradation of the conventional cyclic detector which based on max-output-SNR criterion in impulsive noise is shown both theoretically and experimentally. By fusing second-order cyclostationarity and fractional lower-order statistics, a type of cyclic fractional lower-order statistics is developed which is defined for exploiting cyclostationarity property. Then, a new robust type of detection algorithm is developed using the theory of optimal filtering based on max-output-SNR criterion and alpha-stable distribution, including the fractional lower-order cyclic matched filter, which is formulated for detecting the communication signals in the presence of interference and non-Gaussian alpha-stable distribution impulsive noise. It is shown that the new method is robust to Gaussian and non-Gaussian impulsive noises, and is immune to the interfering signals which occupy the same spectral band as that of the received signal. Simulation results show the robustness and effectiveness of the proposed algorithm.


Title of the Paper: A Control System of SEMG Signal Based on Deep Learning

 

Authors: Weibo Song, Wei Wang, Fengjiao Jiang

Pages: 386-391

https://doi.org/10.46300/9106.2020.14.52

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Abstract: The research of control system based on sEMG signal is a popular field at present. It collects bioelectricity of human body through surface electrode. It has the new characteristic of subject fusion, and it is the combination of engineering technology and medical theory, specifically the application of cross combination of control science and electrophysiology. In this paper, the human surface EMG signal is taken as the research object, and a manipulator control system based on one-dimensional convolutional neural network (CNN) is proposed, and the functions and implementation methods of each part of the system are analyzed. The experimental results show that the recognition accuracy of the training model is 0.973, and the design scheme of EMG signal recognition and classification system with deep learning method is feasible. The successful design of the system provides technical support and theoretical basis for the further study of electrophysiological signals


Title of the Paper: APTITUDE Framework for Learning Data Classification Based on Machine Learning

 

Authors: Adelina Aleksieva-Petrova, Veska Gancheva, Milen Petrov

Pages: 379-385

https://doi.org/10.46300/9106.2020.14.51

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Abstract: Learning analytics refers to the machine learning to provide predictions of learner success and prescriptions to learners and teachers. The main goal of paper is to proposed APTITUDE framework for learning data classification in order to achieve an adaptation and recommendations a course content or flow of course activities. This framework has applied model for student learning prediction based on machine learning. The five machine learning algorithms are used to provide learning data classification: random forest, Naïve Bayes, k-nearest neighbors, logistic regression and support vector machines


Title of the Paper: A Statistical Measurement of Randomness Based on Pattern Vectors

 

Authors: Ray-Ming Chen

Pages: 372-378

https://doi.org/10.46300/9106.2020.14.50

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Abstract: Randomness of data or signals has been applied and studied in various theoretical and industrial elds. There are many ways to de- ne and measure randomness. The most popular one probably is the statistical testing for random- ness. Among the approaches adopted, Runs Test is a highly used technique in testing the random- ness. In this article, we demonstrate the inef- cient aspects of Runs Test and put forward a new approach, or pattern-vector-based statistic, based on pattern vectors that could e ectively enhance the precision of testing randomness. A random binary sequence is supposedly to have less or no patterns. Based on this, we put for- ward our randomness-testing statistic. We also run an experiment to demonstrate how to apply this statistic and compare the eciency or failure rate with Runs Test in dealing with a set of ran- domly generated input sequences. Moreover, we devise a statistically-justi able measure of ran- domness for any given binary sequence. In the end, we demonstrate a way to combine this new device with Kalman lters to enhance the data assimilation.


Title of the Paper: Smooth Path Planning of Ackerman Chassis Robot based on Improved ant Colony Algorithm

 

Authors: Guannan Lei, Yili Zheng

Pages: 361-371

https://doi.org/10.46300/9106.2020.14.49

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Abstract: In the domain of robotics and autonomous driving, the automatic path planning of vehicle collision-free motion is an essential task on the navigation level. It is found that the traditional path planning algorithm and the ployline path cannot fully meet the driving requirements of Ackerman chassis robot. In order to solve the autonomous navigation problem of Ackerman chassis mobile robot in structured environment, this paper presents a new improved algorithm. The method of configuration space can introduce the robot's own structural size parameters into the algorithm. Through convex polygon detection method, the local U-shaped area in the map is transformed into a closed area. The essence of these two strategies is to preprocess the map. The initial pheromone distribution is no longer globally uniform, but is distributed according to the terrain. The volatilization factor of pheromone is changed from static constant to dynamic one, which is combined with Poisson distribution law. This strategy makes the improved pheromone distribution law not only avoid the randomness and blindness in the initial stage of the algorithm, but also ensure the ant colony's exploration behavior and guiding role in the middle stage of the algorithm. Path smoothing is also a challenging task. This algorithm optimizes the path step by step by improving the evaluation function, removing redundant nodes and 2-turning algorithm. Thus, a collision free smooth path suitable for Ackerman robot is obtained. This paper combines a variety of algorithm improvement strategies, not only improving the performance of ant colony algorithm path exploration, but also planning a smooth curve path suitable rather than polyline for Ackerman mobile robot tracking. The algorithm is coded and simulated by MATLAB, and the feasibility and effectiveness of the algorithm are verified. This will provide an important basis for the subsequent algorithm migration and lay the foundation for the path tracking control of the Ackermann chassis robot.


Title of the Paper: An Automatic Monitoring Method of Slope Deformation in Open-pit mine based on BP Neural Network and GIS Technology

 

Authors: Yan-Jun He, Tao Chen, Liu Han

Pages: 353-360

https://doi.org/10.46300/9106.2020.14.48

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Abstract: At present, the research on BP neural network has achieved good results in many industries and fields, but there are few projects in the application research of mineral resources mining. Under the social background of the rapid development of electronic information technology, BP neural network and GIS technology are combined to carry out research and application, which will provide a new research path for slope deformation monitoring and disaster prevention in mining area. Therefore, in the paper, the key technology of open-pit mine slope deformation automatic monitoring based on BP neural network and GIS technology was put forward. Firstly, the advantages of BP neural network were analyzed and BP neural network was selected as the prediction model of slope deformation. The artificial fish swarm algorithm was used to improve the BP neural network to improve the performance of the model. Based on the analysis and construction of GIS technology, the combination application of BP neural network and GIS technology was discussed. Through practice, the application effect of the technology was verified, and it has good theoretical and practical value


Title of the Paper: A Portable Environmental Parameter Monitor Based on STM32

 

Authors: Pingchuan Zhang, Jie Liu and Sa Zhang

Pages: 346-352

https://doi.org/10.46300/9106.2020.14.47

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Abstract: In this paper, a portable monitoring system with environmental parameters as breakthrough point is proposed, and focuses on the research and development of a portable instrument for monitoring the quality of indoor environmental parameters. This paper studies and designs a portable environment parameter detector based on STM32 development board, which collects monitoring data through external sensors. Write your own based on STM32 platform of data acquisition and processing procedures, the successful implementation of the, temperature, humidity, formaldehyde, CO, real-time monitoring of environmental parameters such as methane, and through the LCD screen display in real time. Testing environment parameter meter, real-time display of the corresponding data and collecting sample data processing analysis of a day, to achieve the desired goal.


Title of the Paper: An Image Fusion Algorithm based on Modified Contourlet Transform

 

Authors: Pai Zhang

Pages: 340-345

https://doi.org/10.46300/9106.2020.14.46

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Abstract: Multi-focus image fusion has established itself as a useful tool for reducing the amount of raw data and it aims at overcoming imaging cameras’ finite depth of f ield by combining information from multiple images with t he same scene. Most of existing fusion algorithms use the method of multi-scale decompositions (MSD) to fuse the s ource images. MSD-based fusion algorithms provide much better performance than the conventional fusion methods .In the image fusion algorithm based on multi-scale decomposition, how to make full use of the characteristics of coefficients to fuse images is a key problem.This paper proposed a modified contourlet t ransform(MCT) based on wavelets and nonsubsampled directional filter banks(NSDFB). The image is decomposed in wavelet domain,and each highpass subband of wavelets is further decomposed into multiple directional subbands by using NSDFB. The MCT has the important features of directionality and translation invariance. Furthermore, the MCT and a novel region energy strategy are exploited to perform image fusion algorithm. simulation results shows t hat the proposed method can the fusion results visually and also improve in objective evaluating parameters.


Title of the Paper: Improving Patient Voice Intelligibility by using a Euclidian Distance-Based Approach to Improve Voice Assistant Accuracy

 

Authors: A. M. Mutawa

Pages: 329-339

https://doi.org/10.46300/9106.2020.14.45

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Abstract: Voice assistance (VA) is gaining domestic consumer attention in a variety of products, such as Amazon Alexa, Google Home, Apple’s Siri, and Microsoft’s Cortana. Furthermore, VA has recently shown its usefulness and ability to improve inpatient experience in hospitals and clinics. Nevertheless, none of the VA products has an accuracy rate greater than 90%. The accuracy decreases even more in noisy or public environments. Hence, improving VA accuracy in noisy environments requires a speech signal algorithm with good quality and intelligibility. There is great interest in developing an objective intelligibility measure that shows maximum correlation with subjective speech intelligibility and that can measure the effect of speech enhancement algorithms on the processing of noisy speech signals. In this paper, Euclidian distance-based speech intelligibility prediction is proposed to measure the correlation with subjective intelligibility in different noisy environments. This paper also presents a comparative analysis and general background research in speech intelligibility improvement. The results show that no single algorithm is effective in improving the intelligibility of speech signals.


Title of the Paper: A Magnetic Field Gradiometer based on the Laser Helium Optically Pumped Magnetic Field Sensors

 

Authors: Chao Wang, Zhijian Zhou, Defu Cheng and Jie Zhang

Pages: 318-328

https://doi.org/10.46300/9106.2020.14.44

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Abstract: The theory of ows is one of the most important parts of Combinatorial Optimiza- tion and it has various applications. In this pa- per we study optimum (maximum or minimum) ows in directed bipartite dynamic network and is an extension of article [9]. In practical situa- tions, it is easy to see many time-varying opti- mum problems. In these instances, to account properly for the evolution of the underlying sys- tem overtime, we need to use dynamic network ow models. When the time is considered as a variable discrete values, these problems can be solved by constructing an equivalent, static time expanded network. This is a static approach


Title of the Paper: Optimum Flows in Directed Bipartite Dynamic Network. The Static Approach

 

Authors: Camelia Schiopu, Eleonor Ciurea

Pages: 309-317

https://doi.org/10.46300/9106.2020.14.43

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Abstract: The theory of ows is one of the most important parts of Combinatorial Optimiza- tion and it has various applications. In this pa- per we study optimum (maximum or minimum) ows in directed bipartite dynamic network and is an extension of article [9]. In practical situa- tions, it is easy to see many time-varying opti- mum problems. In these instances, to account properly for the evolution of the underlying sys- tem overtime, we need to use dynamic network ow models. When the time is considered as a variable discrete values, these problems can be solved by constructing an equivalent, static time expanded network. This is a static approach


Title of the Paper: The Reasonable and Conscious Understanding System of reality Under Uncertainty

 

Authors: B. Khayut, L. Fabri, M. Avikhana

Pages: 296-308

https://doi.org/10.46300/9106.2020.14.42

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Abstract: The modern autonomous Expert and Statistical Systems of Artificial Intelligence (AI) cannot continuously, independently and consciously think, learn and develop. This is happening because the models, methods and technologies of their processing in these systems cannot synchronously actualized (trained), function, independently, systemically, situationally, continuously, accurately and on their own in the conditions unpredictability, uncertainty of changing situations and lack of data, information and knowledge about the objects during the process of their continuous perception from the fuzzy environmental reality. Consequently, the need arises to create self-learning, self-developing and self-organized computational intelligent systems that continuously perceive and process changing data, information and knowledge in their changing, uncertainty and previously unknown situation in the surrounding reality. To solve the above problems and to create a system of General AI, we offer the new concept of creating a Computational Intelligent System of a Reasonable and Conscious Understanding of reality under uncertainty through of developed by us following models, methods and technologies of: a) perception the reality of environment, b) self-developing memory, c) situational control of data, information, knowledge, objects, models and processes, d) presentation, generalization and explanation of knowledge, e) fuzzy inference, f) decision making, g) reasoning and thinking, h) cognition, and h) Dialog Control in communication with human, robots and systems through of the intelligent interface, which integrating this functionality into a coherent Reasonable and Conscious Understanding System of reality Under Uncertainty.


Title of the Paper: Arabic Word Dependent Speaker Identification System Using Artificial Neural Network

 

Authors: Aws Al-Qaisi

Pages: 290-295

https://doi.org/10.46300/9106.2020.14.41

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Abstract: The security of systems is a vital issue for any society. Hence, the need for authentication mechanisms that protect the confidentiality of users is important. This paper proposes a speech based security system that is able to identify Arabic speakers by using an Arabic word شكرا)) which means “Thank you”. The pre-processing steps are performed on the speech signals to enhance the signal to noise ratio. Features of speakers are obtained as Mel-Frequency Cepstral Coefficients (MFCC). Moreover, feature selection (FS) and radial basis function neural network (RBFNN) are implemented to classify and identify speakers. The proposed security system gives a 97.5% accuracy rate in its user identification process.


Title of the Paper: Cloud Based Mission Critical Calls at the Edge

 

Authors: I. Atanasov, E. Pencheva, A. Nametkov

Pages: 282-289

https://doi.org/10.46300/9106.2020.14.40

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Abstract: Multi-access Edge Computing (MEC) technology outsources the cloud services at the edge of the mobile network for delay-sensitive, bandwidth hungry applications. The technology addresses the requirements of mission critical communications for ultralow latency and high reliability in a sustainable and affordable way. The paper studies MEC capabilities to handle mission critical calls exposing the network functions for traffic gating and rerouting. Following the RESTful approach to define MEC services, information flows, interfaces with data model and data format are presented. The injected latency by the service is theoretically evaluated.1


Title of the Paper: Bounds on Complexity when Sorting Reals

 

Authors: Marcel Jirina

Pages: 276-281

https://doi.org/10.46300/9106.2020.14.39

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Abstract: A family of multivalue collocation methods for the numerical solution of differen- tial problems is proposed. These methods are developed in order to be suitable for the solu- tion of stiff problems, since they are highly stable and do not suffer from order reduction, as they have uniform order of convergence in the whole integration interval. In addition, they permits to have an effcient implementation, due to the fact that the coeffcient matrix of the nonlinear sys- tem for the computation of the internal stages has a lower triangular structure with one-point spectrum. The uniform order of convergence is numerically computed in order to experimentally verify theoretical results.


Title of the Paper: One-Point Spectrum Nordsieck Almost Collocation Methods

 

Authors: Dajana Conte, Raffaele D'Ambrosio, Maria Pia D'Arienzo, Beatrice Paternoster

Pages: 266-275

https://doi.org/10.46300/9106.2020.14.38

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Abstract: A family of multivalue collocation methods for the numerical solution of differen- tial problems is proposed. These methods are developed in order to be suitable for the solu- tion of stiff problems, since they are highly stable and do not suffer from order reduction, as they have uniform order of convergence in the whole integration interval. In addition, they permits to have an effcient implementation, due to the fact that the coeffcient matrix of the nonlinear sys- tem for the computation of the internal stages has a lower triangular structure with one-point spectrum. The uniform order of convergence is numerically computed in order to experimentally verify theoretical results.


Title of the Paper: A Short Review of Some Mathematical Methods to Detect Fake News

 

Authors: Giuseppe Giordano, Serena Mottola, Beatrice Paternoster

Pages: 255-265

https://doi.org/10.46300/9106.2020.14.37

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Abstract: In this work we aim to illustrate some mathematical methods recently appeared in the scientic literature to detect fake news. The problem of fake news is an increasingly present topic in our society, from public debate to scien- tic research. The number of fake news produced is constantly increasing especially for the advan- tages of those who spread them. In fact, emotion- ally compelling news, in line with our thoughts, capture our attention, and lead to clicks and views, in the hope of attracting advertising. Un- derstanding whether a news is false or not is not an easy problem to solve, given the large amount of data present on the internet. The detection mechanism should predict the information very quickly in order to stop the spread of fake news. This work is a review of four methods to de- tect fake news recently appeared in the litera- ture [22, 33, 39, 47]. Different methodologies are observed among the various methods: statistical approach, articial neural network, articial in- telligence and text approach. Furthermore, some results are shown.


Title of the Paper: Nonlinear Mechanics Study of Concrete T-beam Bridge With Cracking Damage Based on Numerical Simulation

 

Authors: Pulu Han

Pages: 249-254

https://doi.org/10.46300/9106.2020.14.36

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Abstract: The cracking damage of concrete bridge will seriously affect the overall safety of a structure. In this study, based on the numerical simulation, finite element analysis was carried out on the concrete T beam through the ANSYS software, and the selection of elements and the constitutive relationship of materials in the numerical simulation were introduced. It was found from the results of numerical simulation that the cracks of T beam continued to develop under the action of load, the concrete entered the plastic state from the elastic state and the mid-span deflection increased with the increase of load. In the case of the change of cracks, the larger the crack height, the larger the crack range of the beam. With the increase of load, the structural rigidity continued to degenerate, and the compressive stress of the concrete also increased. The research in this paper proves the validity of numerical simulation in the study of nonlinear mechanics of beam bridge and also makes some contributions to the study of crack damage of beam bridge.


Title of the Paper: Circuit Theory Analysis of Parity-Time-symmetric Wireless Power Transfer System

 

Authors: Yu Jin, Wangqiang Niu, Wei Gu

Pages: 241-248

https://doi.org/10.46300/9106.2020.14.35

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Abstract: Wireless power transfer (WPT) technology reduces the risks brought by connection between electrical equipment and power source, it has been widely used in various fields in recent years. To overcome issues of low transfer efficiency and poor robustness when coupling coefficient varies, a WPT system based on parity-time (PT) symmetric circuit is proposed, which consists of two RLC oscillators. The system state equation is obtained by circuit theory, then be analyzed to derive the system resonance frequency, transmission efficiency, and phase difference between Tx and Rx. A simulation based on PSIM is established to verify the theoretical derivation of transmission characteristics. The simulation results illustrate that the resonance frequency of the WPT system is adjusted automatically in the strong coupling region when the coupling coefficient changes, the output voltage across the load resistance always equals source voltage on the transmitter. Compared with the non-parity-time symmetric system, PT-symmetric WPT system could achieve higher transfer efficiency over a longer distance, this scheme can transfer power with constant efficiency of over 80% in a certain region. A set of simulations with variation load resistance are considered to verify the system robustness. All results are consistent with theoretical derivation and analysis


Title of the Paper: Factor Analysis Models in Enterprise Costs Management

 

Authors: G. Bakulina, V. Fedoskin, M. Pikushina, V. Kukhar, E. Kot

Pages: 232-240

https://doi.org/10.46300/9106.2020.14.34

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Abstract: The process of substantiation, adoption and implementation of a managerial decision requires a lot of analytical work, which is based on the use of various economic calculations. Objective and accurate results of such an analysis are always in demand when developing and justifying managerial decisions. To estimate the impact of factor indicators on the effective feature, various factor analysis techniques have been developed based on such widely used research methods as the chain substitution method and the method of absolute differences. The main advantages of these methods are simplicity, efficiency and easy interpretation of the results. However, most of them do not give an accurate assessment of the influence of factors, since they do not take into account the sequence of replacement of indicators when performing calculations, depending on the degree of their significance. To analyze diversified production the problem arises how to estimate the impact of the composition of produced heterogeneous products on effective economic indicators, such as profit and total costs. Such a situation leads to the implementation of an incorrect production diversification strategy and errors in the formation of an optimal market composition. The article discusses and substantiates ways to eliminate identified problems in the construction of factor models on the example of agricultural production.


Title of the Paper: Isotropy Analysis of Parallel Six-Axis Accelerometer on Circular Hyperboloids

 

Authors: Chengxin Du, Jiaguo Tang, Chunzhan Yu, Qin Yin, Yili Zheng

Pages: 222-231

https://doi.org/10.46300/9106.2020.14.33

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Abstract: This paper introduced the isotropic accelerometer using the circular hyperboloids method, which based on modified Gough-Stewart platform (GSP). By the static model of the accelerometer, the isotropy is defined on the acceleration matrix. On the basis of the isotropy condition, the relationship between isotropy index and geometric parameters of circular hyperboloids was investigated. Calculating the isotropy index by the optimization tool, this paper verified that it is feasible to achieve isotropy for the accelerometer. Then taking mass into account, a case is presented to optimize the parameters to construct isotropic accelerometer on circular hyperboloids. According to the 3D model of isotropic accelerometer, the static characteristic simulation was carried out by the finite element method. Based on the simulation experimental results, the calibration matrix was deduced, and the experimental isotropy index was obtained. Comparing the theoretical and experimental isotropy index, the method of circular hyperboloids was proved to be reliable and valid to construct isotropic accelerometer


Title of the Paper: Energy and Mode Filtering in a Graphene Channel With Unevenly Spaced Barriers with a Smooth Profile

 

Authors: Paolo Marconcini

Pages: 213-221

https://doi.org/10.46300/9106.2020.14.32

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Abstract: We simulate the transport and shot noise behavior of graphene armchair ribbons with a series of parallel, unevenly spaced potential barriers with a smooth profile (which could result from the electrostatic effect of negatively biased gates). We analyze the effect of Klein tunneling and resonant tunneling on the individual modes propagating through the graphene channel, showing that this structure can behave as a mode and an energy filter for the charges injected from the contacts. Moreover, we study the different transport regimes (ballistic, strong localized, and diffusive) that can take place inside the graphene ribbon and the effect on the shot noise behavior of the device.


Title of the Paper: Markov-Modulated Linear Regression Parameter Estimation Using a Convolution of Exponential Densities

 

Authors: Nadezda Spiridovska

Pages: 205-212

https://doi.org/10.46300/9106.2020.14.31

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Abstract: When one applies statistical models, he usually makes the assumption that the data or error come from a normal distribution. In order to verify or to estimate the parameters of the normal distribution, the typical approaches would be normality tests and model selections. In this article, we come up with two methods that could fit the data via normal distribution and measure the fitness. This would serve an alternative for model selection. Unlike statistical approaches - parametric or non-parametric statistics - we use approximation approaches to measure the optimal similarity between a given data set and its induced normal distributions and then search for the optimal normal distribution that has the best similarities. The degree of similarity is defined by two approaches: the overlapped area and the arccos function. The idea is to look at the patterns between data set induced step function and sampled normal distributions in the form of approximated step probability density functions. Our analytical approach could measure the degree of normality, or the similarity with normal distributions, which could then used in pioneering findings for related statistical inferences


Title of the Paper: Two Optimal Measurements of Normality for Finite Set of Discrete Data

 

Authors: Ray-Ming Chen

Pages: 197-204

https://doi.org/10.46300/9106.2020.14.30

Abstract: When one applies statistical models, he usually makes the assumption that the data or error come from a normal distribution. In order to verify or to estimate the parameters of the normal distribution, the typical approaches would be normality tests and model selections. In this article, we come up with two methods that could fit the data via normal distribution and measure the fitness. This would serve an alternative for model selection. Unlike statistical approaches - parametric or non-parametric statistics - we use approximation approaches to measure the optimal similarity between a given data set and its induced normal distributions and then search for the optimal normal distribution that has the best similarities. The degree of similarity is defined by two approaches: the overlapped area and the arccos function. The idea is to look at the patterns between data set induced step function and sampled normal distributions in the form of approximated step probability density functions. Our analytical approach could measure the degree of normality, or the similarity with normal distributions, which could then used in pioneering findings for related statistical inferences


Title of the Paper: Design of On chip Spiral Inductors for Millimeter Wave Frequency Synthesizers

 

Authors: Nithin M., Harish M. Kittur

Pages: 191-196

https://doi.org/10.46300/9106.2020.14.29

Abstract: The energy storing element, inductor plays a vital role in CMOS based high frequency integrated circuits, especially in signal generation and impedance matching blocks.An on chip inductor is considered as a critical component because its performance directly impacts the associated circuitry when it is used as a load device or as a matching element. Out of the various requirements of an inductor which resides inside a chip, the inductance value,quality factor and self resonance frequency with smaller area is often preferred. This paper focuses on the lumped model of inductors for high frequency circuits working in the Millimeter wave region from 30 GHz to 300 GHz. For millimeter wave oscillators,inductance value in the range of pico Henry are essential and hence a complete model of an inductor is presented. Using electromagnetic simulator SONNET, all the parameters are extracted. The extracted model is used in the design of an LC Oscillator for millimeter wave band. A Q factor of 26 is achieved for an inductor value close to 153 pH at 60 GHz.The circuits employing this inductor shows promising results when simulated using 45 nm CMOS pdks


Title of the Paper: A Study of Authenticated Communication Based on Magic Square and Goldbach’s Conjecture

 

Authors: Hui-Shan Li, Chenglian Liu

Pages: 184-190

https://doi.org/10.46300/9106.2020.14.28

Abstract: Although the magic square is a historical and universal study, its progress has been limited, to numeric games, which is closer to digital games or word games, and lacks the connection with mainstream mathematics. Recently, its study has extended from exciting mathematical games to various novel applications, such as image encryption, decryption processing, watermarking solutions, and student group learning problems, or different engineering applications. In terms of employment in information security, it is the blue ocean that requires more innovative research to enrich its content. In this study, we engage the magic square and Goldbach’s Conjecture to develop an innovative method to search prime numbers


Title of the Paper: A Back-stepping Control based on Bounded Function for Four-wheel Drive Omni-directional Mobile Robots

 

Authors: Jianping Chen, Jianbin Wang

Pages: 175-183

https://doi.org/10.46300/9106.2020.14.27

Abstract: As the simply structure and flexible design, back-stepping technique has been widely applied in robot trajectory tracking control. However, there is velocity jumping problem in conventional back-stepping tracking control for four-wheel drive omni-directional mobile robots. In this paper, an improved back-stepping controller based on a bounded function is proposed. To improve control performance, a smooth and bounded tracking velocity, arising from the function, is used to instead of the jumping velocity. Simulation results of tracking different paths and comparison with the conventional back-stepping technique show that the approach is effective, and the system has a good performance with smooth outputs.


Title of the Paper: Diameter Measurement of Cylindrical Products With Displacement Compensation Along the Optical Axis

 

Authors: V. V. Rakhmanov, S. V. Dvoynishnikov, D. O. Semenov

Pages: 169-174

https://doi.org/10.46300/9106.2020.14.26

Abstract: The problem of diameter measurement of cylindrical products using the adapted triangulation method is considered. A method to improve the accuracy of measurement is proposed by determining the displacement of an object in the work area along the optical axis. The description of the layout of the laboratory installation and the results of applying the method for exemplary objects are given.


Title of the Paper: Towards a Dynamic Multi-Agent Based Scaffolding Framework

 

Authors: Panayotis Papazoglou, Sarantos Psycharis, Konstantinos Kalovrektis

Pages: 160-168

https://doi.org/10.46300/9106.2020.14.25

Abstract: Students have different abilities, skills and background and thus the corresponding learning process is different. Moreover, the teacher strategy, the available equipment, etc, play a crucial role in the learning curve. Scaffolding is a learning approach for dynamically supporting student during the learning process. The final goal is to restrict this support and to increase the student autonomy. This paper presents a basic idea for developing a dynamic multi-agent computer based scaffolding framework. Multi-agent technology constitutes an adaptive approach regarding the needed scaffolding. This paper also shows the modelling approach regarding the multi agent concepts. Finally, some theoretical indicative learning paths for different students are presented.


Title of the Paper: Algorithms for Detection Gender Using Neural Networks

 

Authors: Maksat Kalimoldayev, Orken Mamyrbayev, Nurbapa Mekebayev, Aizat Kydyrbekova

Pages: 154-159

https://doi.org/10.46300/9106.2020.14.24

Abstract: In this paper, we investigate two neural architecture for gender detection tasks by utilizing Mel-frequency cepstral coefficients (MFCC) features which do not cover the voice related characteristics. One of our goals is to compare different neural architectures, multi-layers perceptron (MLP) and, convolutional neural networks (CNNs) for both tasks with various settings and learn the gender -specific features automatically.


Title of the Paper: A Note on the Cumulative and the Accumulated Hazard Function

 

Authors: Dejan Škanata

Pages: 149-153

https://doi.org/10.46300/9106.2020.14.23

Abstract: In probability and statistics, reliability theory and survival analysis, there exists a 20-year-old dilemma, initially raised by L.M. Leemis, on whether the cumulative or the accumulated hazard function in the discrete domain is more appropriate to be used in various types of applications. Here, we propose that priority should be given to the accumulated hazard function.


Title of the Paper: Model for 1/f Noise in Graphene and in More Common Semiconductors

 

Authors: Paolo Marconcini

Pages: 144-148

https://doi.org/10.46300/9106.2020.14.22

Abstract: Measurements performed on several graphene samples have shown the presence of a minimum of the flicker noise power spectral density near the charge neutrality point. This behavior is anomalous with respect to what is observed in more usual semiconductors. Here, we report our explanation for this difference. We simulate the 1/f noise behavior of devices made of graphene and of more common semiconductors, through a model based on the validity of the mass-action law and on the conservation of the charge neutrality. We conclude that the minimum of the flicker noise at the charge neutrality point can be observed only in very clean samples of materials with similar mobilities for electrons and holes.


Title of the Paper: Discovery of Incomplete Diagnostic Model based on Learning

 

Authors: Wang Xiaoyu, Li Chuang, Ye Liang

Pages: 137-143

https://doi.org/10.46300/9106.2020.14.21

Abstract: The model-based diagnosis uses the common reasoning of offline model and online observation to obtain whether and why faults occur. However, the diagnosis is based on the premise of complete model. Once there are unknown behaviors in the diagnosis process, the diagnosis results will not be obtained. In this paper, a method of incomplete model discovery based on online diagnosis process is proposed: In the online diagnosis process, the data of the complete model are learned and the model is trained and adjusted. When the incomplete behavior is found, the nature of the incomplete behavior is determined according to the historical diagnostic data and online observation data, and the corresponding transition/state/event is generated and added to the model to further obtain the definite diagnosis results.


Title of the Paper: Comparative Analysis of Two Generalized Methodologies for Circuit Optimization

 

Authors: Alexander Zemliak, Fernando Reyes, Sergio Vergara, Olga Felix

Pages: 131-136

https://doi.org/10.46300/9106.2020.14.20

Abstract: The design process for analog network design is formulated on the basis of the optimum control theory. The artificially introduced special control vector is defined for the redistribution of computational costs between network analysis and parametric optimization. This redistribution minimizes computer time. The problem of the minimal-time network design can be formulated in this case as a classical problem of the optimal control for some functional minimization. There is a principal difference between the new approach and before elaborated methodology. This difference is based on a higher level of the problem generalization. In this case the structural basis of design strategies is more complete and this circumstance gives possibility to obtain a great value of computer time gain. Numerical results demonstrate the effectiveness and prospects of a more generalized approach to circuit optimization.


Title of the Paper: Multivariable Constrained Adaptive Predictive Control based on Closed-loop Subspace Identification

 

Authors: Xiaosuo Luo, Xueshan Lin

Pages: 124-130

https://doi.org/10.46300/9106.2020.14.19

Abstract:In order to deal with nonlinear, time-varying, and multivariable constrained characteristics in closed-loop industrial processes, a multivariable constrained adaptive predictive control (CAPC) method based on closed-loop subspace identification is proposed. The state-space model is obtained through the closed-loop subspace identification algorithm, which is regarded as the system model. The algorithm is implemented online to update the R matrix with a receding window. By comparing the prediction errors before and after updating, it considers whether or not to update the system model. The model is then used to design the model predictive controller, which involves the solution of a quadratic program solving multivariable constraints. This paper presents a comparison between the performance of the proposed control method when applied to a 2-CSTR system, and that of an open-loop subspace CAPC method. The superiority of the proposed method is illustrated by the simulation results.


Title of the Paper: A Fast and Efficient Lossless Compression Technique for Greyscale Images

 

Authors: T. Kavitha, K. Jaya Sankar

Pages: 114-123

https://doi.org/10.46300/9106.2020.14.18

Abstract:The growth of cloud based remote healthcare and diagnosis services has resulted, Medical Service Providers (MSP) to share diagnositic data across diverse environement. This medical data are accessed across diverse platforms, such as, mobile and web services which needs huge memory for storage. Compression technique helps to address and solve storage requirements and provides for sharing medical data over transmission medium. Loss of data is not acceptable for medical image processing. As a result, this work considers lossless compression for medical in particular and in general any greyscale images. Modified Huffman encoding (MH) is one of the widely used technique for achieving lossless compression. However, due to longer bit length of codewords the existing Modified Huffman (MH) encoding technique is not efficient for medical imaging processing. Firstly, this work presents Modified Refined Huffman (MRH) for performing compression of greyscale and binary images by using diagonal scanning method. Secondly, to minimize the computing time parallel encoding method is used. Experiments are conducted for wide variety of images and performance is evaluated in terms of Compression Ratio, Computation Time and Memory Utilization. The proposed MRH achieves significant performance improvement in terms of Compression Ratio, Computation Time and Memory Usage over its state-of-the-art techniques, such as, LZW, CCITT G4, JBIG2 and Levenberg–Marquardt (LM) Neural Network algorithm. The overall results achieved show the applicability of MRH for different application services.


Title of the Paper: Near-infrared Spectroscopy Detection Method for Compressive Strength of Fraxinus mandschurica

 

Authors: Hao Liang, Linyin Xing, Jian Wen, Chao Gao, Jianhui Lin

Pages: 108-113

https://doi.org/10.46300/9106.2020.14.17

Abstract: This study used near-infrared (NIR) spectroscopy as a non-destructive test to predict the compressive strength (i.e., modulus of rupture (MOR) and the modulus of elasticity (MOE)) of Fraxinus mandshurica parallel to the wood grain. Tests were conducted with 120 small and clear wood samples to obtain the diffuse NIR reflectance spectra of the radial and tangent surfaces of the wood samples. Standard normal variable transformation (SNV) combined with Savitzky-Golay (SG) convolution smoothing algorithm was used to filter the raw NIR spectra. Uninformative variables elimination (UVE) and a genetic algorithm (GA) were utilized to identify specific wavelengths in the spectra that directly correlated to compression strength. Finally, a partial least squares (PLS) regression model was developed with the identified wavelengths to determine the MOR and MOE of the samples. The results showed the correlation coefficients of the prediction models for MOR and MOE were 0.88 and 0.89, respectively. The root mean square errors of prediction for MOR and MOE models were 7.37 and 0.49, respectively. Based on these results, it is feasible to accurately estimate the compressive strength of Fraxinus mandshurica (parallel to the grain) using NIR spectroscopy.


Title of the Paper: A Low-cost Webcam-based Eye Tracker and Saccade Measurement System

 

Authors: Ahmad Aljaafreh, Murad Alaqtash, Naeem Al-Oudat, Jafar Abukhait, Ma’en Saleh

Pages: 102-107

https://doi.org/10.46300/9106.2020.14.16

Abstract:Eye movements are integrated with cognitive processes, which indeed make it a helpful research basis for the investigation of human practices. Eye movements can be deployed in discovering several cognitive processes of the brain. This research utilizes low-resolution webcam to develop an eye tracker and saccades measurement tool to extensively lower the gadgets expenses. A consistent algorithm is developed to suit the quality of the webcam using open-source software (Python) to record the time series of the eye location. Likewise, several algorithms are proposed to extract high-level eye movement saccadic measurements from the raw gaze outputs. A pilot study is performed on ten normal participants and Multiple Sclerosis (MS) patients. Experimental results demonstrate that the proposed system is quick, simple and efficient for eye tracking and saccade measurement. The developed tool can be used by clinicians and medical physicians for the diagnosis and identification of neurological disorders


Title of the Paper: An Excitation Circuit of the Cell in Optically Pumped Magnetometer

 

Authors: Chao Wang, Zhijian Zhou, Defu Cheng

Pages: 94-101

https://doi.org/10.46300/9106.2020.14.15

Abstract:Cell is the key component in an optically pumped magnetometer. It is necessary to light the cell before measurement and to maintain the illuminated state. The accuracy and stability of magnetic values from the instrument are closely related to the brightness and stability of the cell. The cell is also the largest power dissipation component in the sensor probe, so the overall energy consumption of the magnetometer is highly correlated with it. This paper studies the excitation circuit of cell in the magnetometer. Firstly, we demonstrate the resistivity characteristic of a cell using simulations. After that, based on the combination of signal source impedance and transmission line impedance, the matching network of excitation circuit is analyzed. We demonstrate that both T-network and Π-network can achieve the impedance matching of the transmitter circuit by a simulation experiment, under the condition of 50MHz signal, 10Ω source impedance, and 50Ω transmission line impedance. T-network shows the best performance in frequency selectivity and energy transfer. Finally, the simulation experiment also proves that a circuit composed of a self-coupled coil and an LC parallel resonant network can realize the impedance matching and the passband selection of the receiver circuit by optimizing values of the inductance and capacitance, and turns of the self-coupled coil simultaneously. The power consumption of the whole high-frequency excitation circuit of cell in the optically pumped magnetometer is only about 6W.


Title of the Paper: An Novel Atomic Scalar Magnetometer Using Laser

 

Authors: Chao Wang, Zhijian Zhou, Defu Cheng

Pages: 88-93

https://doi.org/10.46300/9106.2020.14.14

Abstract:The measurement precision of commercial atom scalar magnetometer is relatively backward compared with that of quantum magnetometer. However, the application of quantum magnetometers such as SERF requires more stringent environmental background requirements, which is not suitable for magnetic field measurement in the geomagnetic environment. The purpose of this paper is to design a 4He atom scalar magnetometer using ECDL laser. Compared with the conventional atomic scalar magnetometer, this magnetometer has higher measuring precision and can work normally in the geomagnetic environment. In order to achieve the above goals, the sensitivity formula of the atomic scalar magnetometer is first deduced and calculated, and the key physical factors that directly affect the sensitivity are the optical pumping rate, transverse relaxation rate, and longitudinal relaxation rate. Then, the light source and 4He cell are determined as key components which affect sensitivity. On this basis, the optical path of the 4He atomic scalar magnetometer using laser is designed in this paper. The light path ensures the stability of the laser wavelength of 1083.207nm by the saturation absorption spectrum method, and it ensures the circularly polarized light enters the 4He cell through the combination of various optical components. This paper also studies the electric excitation technology of the 4He cell. And, combined with simulation experiments, the High-Frequency discharge excitation circuit with high energy transfer efficiency and corresponding matching network are determined. Through the optical wavelength meter, it can be determined that the optical path designed in this paper can guarantee the wavelength stability of 1083.207nm for a long time. By analyzing the detection signals of PD, the circularly polarized light enters the 4He cell in the light circuit designed in this paper has a higher degree of polarization. The High-Frequency discharge excitation circuit designed in this paper can light up the cell smoothly, and the input power when the circuit works stably is about 6W. Finally, the static sensitivity of the magnetometer is 5pT/Hz1/2. The 4He atom scalar magnetometer using ECDL laser designed in this paper has high static sensitivity, which basically meets the design requirements, and the instrument can be used normally in the geomagnetic environment. However, the instrument still has a lot of room for improvement, including optical path and cell performance optimization, and we will continue to study in this direction.


Title of the Paper: Blockchain-based Biometric Election System

 

Authors: Ketevan Tsomaia, Archil Prangishvili, Levan Imnaishvili, Maguli Bedineishvili

Pages: 83-87

https://doi.org/10.46300/9106.2020.14.13

Abstract: The use of biometric technology in the electoral process has undoubtedly produced positive results in terms of protecting the electoral process, speeding up the results and enhancing the feeling of objectivity among the voters. But there is still room for falsification of election results, as the number of votes received by the candidates and the used ballot papers are kept centrally. It is also important to ensure the reliability of the templates for the biometric characteristics of the voters. In order to solve these problems, this work proposes the distributed database of key data, in particular, the blockchain storage technology. The electoral process scheme and the blockchain-based biometric election system architecture and protocols are elaborated according to the proposed method.


Title of the Paper: Low-Cost and Ultra-Low-Power Consuming RTUs for Use in IoT Systems

 

Authors: Ivan Ganchev, Zhanlin Ji, Máirtín O’Droma

Pages: 76-82

https://doi.org/10.46300/9106.2020.14.12

Abstract: This paper presents the design and realization of low-cost and ultra-low-power consuming remote transfer units (RTUs), working as communication gateways for collecting, aggregating, and forwarding IoT data to information centers (servers) in the cloud for further processing and data mining. Two types of RTUs, targeting different application scenarios and utilizing different communication standards, were designed – one, based on the General Packet Radio Service (GPRS) standard, and another – on the NarrowBand Internet of Things (NB-IoT) standard. The developed RTUs were experimentally tested and their use was successfully demonstrated in different IoT systems.


Title of the Paper: Research on Map Construction and Location of Laboratory Service Robot based on Iterative Closest Point

 

Authors: Jian Wu, Ruting Yao, Yili Zheng, Jinhao Liu

Pages: 69-75

https://doi.org/10.46300/9106.2020.14.11

Abstract: The development of mobile robots has led to their wide application in a variety of fields. This study focuses on the intelligent application of mobile robots in laboratory management, especially the environmental awareness and self-positioning of a robot in the laboratory. In this study, a wheeled mobile robot is selected and equipped with a 2D laser scanner. Based on this, a Robot Operating System (ROS) environment is built. The nearest neighbor iterative closest point (ICP) matching algorithm is utilized to perceive the laboratory service environment, construct the indoor map in real time, and locate the robot precisely. Subsequently, data collected in the corridors and indoor environment of the experimental building are used to test the accuracy of the ICP matching algorithm. The results showed that the minimum translation error is as low as 0.0003 m and that the minimum rotation angle error is less than 0.5°. In addition, the positioning and mapping of the robot were analyzed. The experimental results show that the ICP matching algorithm is well suited to map construction and positioning of the laboratory service robot. This is of great significance for further research on laboratory service robots.


Title of the Paper: Determination the Specific Parameters for Uniform Power Separation of Optical Signals

 

Authors: Al-Gawagzeh Mohammed Yousef

Pages: 63-68

https://doi.org/10.46300/9106.2020.14.10

Abstract: This paper will study the importance of using the features of anisotropic medium to decrease the effect of Attenuation and dispersion on the transmitted signals in the fiber optic system due to the power exchange between waves, a calculation for specific cases were made. Also to determine the half-length of the beat region ξ1 for a certain composition of the spiral single mode optical fibers depending on the parameters of the spiral to construct spiral single mode optical fibers based on photo elasticity. Also in this paper we will try to define specific parameters for uniform power separation of the optical signal


Title of the Paper: Transfer Learning-Based Convolutional Neural Network Image Recognition Method for Plant Leaves

 

Authors: Yue Zhao,Yili Zheng, Honglei Shi, Lu Zhang

Pages: 56-62

https://doi.org/10.46300/9106.2020.14.9

Abstract: To improve the accuracy of plant leaf image recognition with a small dataset of plant leaves, a convolution neural network (CNN) plant leaf image recognition method based on transfer learning is proposed. First, a plant leaf image database was expanded by pre-processing the original plant leaf images through random horizontal and vertical rotation and random zooming. The expanded dataset was then processed by mean removal and divided into training and testing sets at a ratio of 4:1. Second, transfer learning training was performed on the plant leaf dataset using existing models (AlexNet and InceptionV3) that were pre-trained on a large dataset. To ensure these models can be adapted to image recognition for plant leaves, the original parameters of the last fully connected layer were replaced, whereas those of all other convolution layers were retained. Finally, the method proposed in this paper was compared to support vector machine, deep belief network, and CNN through testing on the ICL database. A Tensorflow training network model was used in the comparison test, and the results were visualized by Tensorboard. The testing results showed a considerable improvement in recognition accuracy when using the pre-trained AlexNet and InceptionV3 models, where the training dataset accuracies were 95.31% and 95.4%, respectively.


Title of the Paper: Study and Research the Tensor of Dielectric Permittivity and Attenuation Transient in the Bended on Spiral Optical Fiber

 

Authors: Al-Gawagzeh Mohammed Yousef, Al-Hadidi Mohammed Rasoul

Pages: 49-55

https://doi.org/10.46300/9106.2020.14.8

Abstract: This paper investigates the assumption of spiralshaped index leads to an optimal result for the optical fiber modes. It also shows how to decrease the effect of optical fibers parameters such as attenuation and dispersion on the quality of transmitted signals, and to improve it into an acceptable form. The dielectric permeability tensor εij related to the curvature and torsion parameters ( χ , υ ) in the coordinates system ( r, φ ) was analyzed. The dependence of εij tensor on the bent on spiral optical fiber parameters was mathematically calculated. Also to study the exchange of power between the waves HEo 11 and HEe 11 .The Transient attenuation dependence on spiral parameters of optical fiber with a length of (one kilometer) as a case study will be studied also.


Title of the Paper: On the Prime Geodesic Theorem for SL4

 

Authors: Dzenan Gusic

Pages: 42-48

https://doi.org/10.46300/9106.2020.14.7

Abstract: In 1949, A. Selberg discovered a real variable (an elementary) proof of the prime number theorem. A number of authors have adapted Selberg’s method to achieve quite a good corresponding error term. The Riemann hypothesis has never been proved or disproved however. Any generalization of the prime number theorem to the more general situations is known in literature as a prime geodesic theorem. In this paper we derive yet another proof of the prime geodesic theorem for compact symmetric spaces formed as quotients of the Lie group SL4 (R). While the first known proof in this setting applies contour integration over square boundaries, our proof relies on an application of modified circular boundaries. Recently, A. Deitmar and M. Pavey applied such prime geodesic theorem to derive an asymptotic formula for class numbers of orders in totally complex quartic fields with no real quadratic subfields.


Title of the Paper: A Novel Sliding Mode Controller for Underactuated Vertical Takeoff and Landing Aircraft

 

Authors: Yu Wang

Pages: 34-41

https://doi.org/10.46300/9106.2020.14.6

Abstract: Compared with other control methods, the biggest advantage of using sliding mode variable structure control method lies in its strong robustness which could be used to directly handle the strong nonlinear flight control system. However, this control method requires switching between different switching surfaces, which will inevitably cause buffeting problems, so that the energy consumption increases. Therefore, how to overcome this disadvantage to achieve the superior performance of sliding mode variable structure control method is the current research focus. This paper studies the trajectory tracking of under-actuated VTOL aircraft with three degrees of freedom and two control inputs under various coupling effects. By the input and coordinate transformation, the dynamic equation of the system is transformed into decoupled standard under-actuated form and the sliding mode controller is designed. Then Lyapunov stability theorem is used to derive sliding mode control law which could ensure that the system asymptotically converges to the given trajectory. The simulation has demonstrated the effectiveness of this method


Title of the Paper: Bayesian Change Point Estimation Based on Masked Data in Exponential Distribution Parallel System

 

Authors: Yuejun Liu, Huaikou Miao

Pages: 28-33

https://doi.org/10.46300/9106.2020.14.5

Abstract: Change point reflects a qualitative change in things. It has gained some applications in the field of reliability. In order to estimate the position parameters of the change point, a Bayesian change point model based on masked data and Gibbs sampling was proposed. By filling in missing lifetime data and introducing latent variables, the simple likelihood function is obtained for exponential distribution parallel system under censored data. This paper describes the probability distributions and random generation methods of the missing lifetime variables and latent variables, and obtains the full conditional distributions of the change point position parameters and other unknown parameters. By Gibbs sampling and estimation of unknown parameters, the estimates of the mean, median, and quantile of the parameter posterior distribution are obtained. The specific steps of Gibbs sampling are introduced in detail. The convergence of Gibbs sampling is also diagnosed. Random simulation results show that the estimations are fairly accurate.


Title of the Paper: Approximate Formulas for Zeta Functions of Selberg’s Type in Quotients of SL4

 

Authors: Dzenan Gusic

Pages: 21-27

https://doi.org/10.46300/9106.2020.14.4

Abstract: The goal of the paper is to derive some approximate formulas for the logarithmic derivative of several zata functions of Selberg’s type for compact symmetric spaces formed as quotients of the Lie group SL4 (R). Such formulas, known in literature as Tutchmarsh-Landau style approximate formulas, are usually applied in order to obtain prime geodesic theorems in various settings of underlying locally symmetric spaces.


Title of the Paper: Stability Analysis of Networked Control Systems with Multi-Packet Dropout based on Switched System Approach

 

Authors: Zijian Dong, Liang Tian, Huanhuan Luo, Guiping Zhou, Li Wang

Pages: 13-20

https://doi.org/10.46300/9106.2020.14.3

Abstract: Networked control system models with packet dropout in multi-packet transmission were established under hypothetical conditions in this paper, and the system was seen as a switched system. The causes of packet dropout in networked control system are analyzed in view of single-packet transmission and multi-packet transmission respectively. Based on Lyapunov stability theory, the property of the networked control system with multi-packet dropout was analyzed from the point of view of an asynchronous dynamic system. The method which determined the multi-packet dropout boundary to keep the system steady was given. The simulation results show the influences of multi-packet dropout on the system performance and prove the validity of the analytical method proposed in this paper.


Title of the Paper: Identification of Small Unmanned Flying Objects

 

Authors: Lucjan Setlak, Rafał Kowalik

Pages: 7-12

https://doi.org/10.46300/9106.2020.14.2

Abstract: Detecting obstacles during the flight and avoiding them is desirable in the case of unmanned aerial vehicles intended for observation of a residential area, refers especially to lightweight micro-aviation vehicles of multi-rotor type, and is also a serious problem because their load capacity is limited, therefore only electronic sensors can be connected to the object. Usually the sensors built into the system are either based on a type vision (monocular or stereo camera) or on a laser camera. However, each of the sensors has its advantages and disadvantages, which is why the article presents the concept of a system for collecting data characterizing the flight of a UAV object and including them in the object identification process. The main purpose of this work is to perform selected studies (analysis, mathematical model, simulations) in the field of identification of small unmanned flying objects. A dynamic model describing UAV motion was developed, which took into account flight parameters using various identification methods. The structure of this work is contained in four chapters, in which, among others, the second chapter deals with the review of existing identification systems for small UAV objects, based on an analysis of the literature on the subject of research. The third chapter covers the issues related to aerodynamics and mechanics of small UAV objects and concerns linear longitudinal equations of UAVs based on Newton's second law. This chapter also describes the algorithm used for dynamic description along with incorrect filtering of "on-line" learning patterns and characterizes the least squares recursive method used for the simulation. Based on the analysis, mathematical models created, simulations performed and the results obtained based on them, practical conclusions presented in the final part of the article were formulated.


Title of the Paper: A Novel Network Flow Prediction Method based on Cuckoo Search Algorithm Optimizing BP Neural Network

 

Authors: Liqiang Fan

Pages: 1-6

https://doi.org/10.46300/9106.2020.14.1

Abstract: Network traffic modeling and forecasting is the basis of network management and security warning. According to the characteristics of the nonlinear network flows, chaos, polygon, etc., in order to improve the prediction accuracy of network traffic, and puts forward the a cuckoo search cable calculation method and BP neural network by network traffic prediction model, BP neural network is used by the network of the learning sample book training, die quasi cloth Valley bird found nest eggs to find the optimal model parameters and the mining network flow number in simulation experiment according to measure the trial model of can. Simulation results show that compared with the reference model, CS-BPNN improves the prediction accuracy of network traffic, network traffic trends are described more accurately, provides a new research tool with network traffic prediction.