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  • Zebrafish Melanophores Suggest Novel Functions of Cell Chirality in Tissue Formation
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Hiroaki Yamanaka; Shigeru Kondo

    Several types of cells show left–right asymmetric behavior, unidirectional rotation, or spiral movements. For example, neutrophil-like differentiated HL60 (dHL60) cells show leftward bias in response to chemoattractant. Neurons extend neurites, creating a clockwise spiral. Platelet cells shows unidirectional spiral arrangements of actin fibers. In the microfabricated culture environment, groups of

    更新日期:2021-01-14
  • Properties of Quantizer and Dequantizer Operators for Qudit States and Parametric Down-Conversion
    Symmetry (IF 2.645) Pub Date : 2021-01-14
    Peter Adam; Vladimir A. Andreev; Margarita A. Man’ko; Vladimir I. Man’ko; Matyas Mechler

    We review the method of quantizers and dequantizers to construct an invertible map of the density operators onto functions including probability distributions and discuss in detail examples of qubit and qutrit states. The biphoton states existing in the process of parametric down-conversion are studied in the probability representation of quantum mechanics.

    更新日期:2021-01-14
  • Application of Game Theory against Nature in Supporting Bid Pricing in Construction
    Symmetry (IF 2.645) Pub Date : 2021-01-14
    Łukasz Rzepecki; Piotr Jaśkowski

    The problem of setting prices for construction works is significant for both the investor and contractor companies. The periodically occurring instabilities in the economy require investment process participants to perform detailed market analyses and assessments, as well as to monitor price forecasts in construction. It is only after such an assessment that it is possible within the framework of the

    更新日期:2021-01-14
  • Design and Optimization of a Fuzzy Logic System for Academic Performance Prediction
    Symmetry (IF 2.645) Pub Date : 2021-01-14
    Juan A. Rojas; Helbert E. Espitia; Lilian A. Bejarano

    Currently, in Colombia, different problems in education exist; one of them is the inconvenience in tracing and controlling the learning trajectories that decide the topics taught in the country’s educational institutions. This work aims to implement a logic-based system that allows teachers and educational institutions to carry out a continuous monitoring process of students’ academic performance,

    更新日期:2021-01-14
  • The Exact Theory of the Stern–Gerlach Experiment and Why It Does Not Imply That a Fermion Can Only Have Its Spin Up or Down
    Symmetry (IF 2.645) Pub Date : 2021-01-14
    Gerrit Coddens

    The Stern–Gerlach experiment is notoriously counter-intuitive. The official theory is that the spin of a fermion remains always aligned with the magnetic field. Its directions are thus quantized: It can only be spin-up or spin-down. However, that theory is based on mathematical errors in the way it (mis)treats spinors and group theory. We present here a mathematically rigorous theory for a fermion

    更新日期:2021-01-14
  • Analysis of Fractal Structures in Dehydrated Films of Protein Solutions
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Maksim Baranov; Elena Velichko; Konstantin Greshnevikov

    The article deals with dendritic structures resulting from self-organization processes in aqueous solutions of albumin proteins. The methods for obtaining the structures and experimental results are presented. It is shown that dendrites are fractal structures that are symmetric under certain conditions of their formation and can have different characteristics depending on the isothermal dehydration

    更新日期:2021-01-13
  • Hadron–Quark Phase Transition in the SU (3) Local Nambu–Jona-Lasinio (NJL) Model with Vector Interaction
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Grigor Alaverdyan

    We study the hadron–quark hybrid equation of state (EOS) of compact-star matter. The Nambu–Jona-Lasinio (NJL) local SU (3) model with vector-type interaction is used to describe the quark matter phase, while the relativistic mean field (RMF) theory with the scalar-isovector δ-meson effective field is adopted to describe the hadronic matter phase. It is shown that the larger the vector coupling constant

    更新日期:2021-01-13
  • An Efficient Login Authentication System against Multiple Attacks in Mobile Devices
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Yang Li; Xinyu Yun; Liming Fang; Chunpeng Ge

    Access management of IoT devices is extremely important, and a secure login authentication scheme can effectively protect users’ privacy. However, traditional authentication schemes are threatened by shoulder-surfing attacks, and biometric-based schemes, such as fingerprint recognition and face recognition, that are commonly used today can also be cracked. Researchers have proposed some schemes for

    更新日期:2021-01-13
  • Influence of Mach Number of Main Flow on Film Cooling Characteristics under Supersonic Condition
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Bo Zhang; Yuan-Xiang Chen; Zhi-guo Wang; Ji-Quan Li; Hong-hu Ji

    The flow and heat transfer characteristics of a film jet inclined to different supersonic situations with a varying Mach number of the main flow were numerically investigated. In supersonic situations, complicated waves are generated by the obstacle of the film jet. In this work, extra pressure is exerted onto the film jet, causing better film attachment to the wall. The strengthening of attachment

    更新日期:2021-01-13
  • Unpaired Image Denoising via Wasserstein GAN in Low-Dose CT Image with Multi-Perceptual Loss and Fidelity Loss
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Zhixian Yin; Kewen Xia; Ziping He; Jiangnan Zhang; Sijie Wang; Baokai Zu

    The use of low-dose computed tomography (LDCT) in medical practice can effectively reduce the radiation risk of patients, but it may increase noise and artefacts, which can compromise diagnostic information. The methods based on deep learning can effectively improve image quality, but most of them use a training set of aligned image pairs, which are difficult to obtain in practice. In order to solve

    更新日期:2021-01-13
  • Research Review on Parking Space Detection Method
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Yong Ma; Yangguo Liu; Lin Zhang; Yuanlong Cao; Shihui Guo; Hanxi Li

    The parking assist system is an essential application of the car’s active collision avoidance system in low-speed and complex urban environments, which has been a hot research topic in recent years. Parking space detection is an important step of the parking assistance system, and its research object is parking spaces with symmetrical structures in parking lots. By analyzing and investigating parking

    更新日期:2021-01-13
  • Implementing a Symmetric Lightweight Cryptosystem in Highly Constrained IoT Devices by Using a Chaotic S-Box
    Symmetry (IF 2.645) Pub Date : 2021-01-13
    Badr M. Alshammari; Ramzi Guesmi; Tawfik Guesmi; Haitham Alsaif; Ahmed Alzamil

    In the Internet of Things (IoT), a lot of constrained devices are interconnected. The data collected from those devices can be the target of cyberattacks. In this paper, a lightweight cryptosystem that can be efficiently implemented in highly constrained IOT devices is proposed. The algorithm is mainly based on Advanced Encryption Standard (AES) and a new chaotic S-box. Since its adoption by the IEEE

    更新日期:2021-01-13
  • Transverse–Spin Quark Distributions from Asymmetry Data and Symmetry Arguments
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Vincenzo Barone; Franco Bradamante; Anna Martin

    The transversity and the Sivers distribution functions of quarks incorporate important information about the transverse-spin and transverse-momentum structure of nucleons. We show how these distributions can be directly determined point by point from leptoproduction asymmetry data collected for various targets and produced hadrons by the COMPASS Collaboration. Only simple symmetry relations are used

    更新日期:2021-01-12
  • On the Arcsecant Hyperbolic Normal Distribution. Properties, Quantile Regression Modeling and Applications
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Mustafa Ç. Korkmaz; Christophe Chesneau; Zehra Sedef Korkmaz

    This work proposes a new distribution defined on the unit interval. It is obtained by a novel transformation of a normal random variable involving the hyperbolic secant function and its inverse. The use of such a function in distribution theory has not received much attention in the literature, and may be of interest for theoretical and practical purposes. Basic statistical properties of the newly

    更新日期:2021-01-12
  • A Type of Time-Symmetric Stochastic System and Related Games
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Qingfeng Zhu; Yufeng Shi; Jiaqiang Wen; Hui Zhang

    This paper is concerned with a type of time-symmetric stochastic system, namely the so-called forward–backward doubly stochastic differential equations (FBDSDEs), in which the forward equations are delayed doubly stochastic differential equations (SDEs) and the backward equations are anticipated backward doubly SDEs. Under some monotonicity assumptions, the existence and uniqueness of measurable solutions

    更新日期:2021-01-12
  • Picture Fuzzy Geometric Aggregation Operators Based on a Trapezoidal Fuzzy Number and Its Application
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Minxia Luo; Huifeng Long

    The picture fuzzy set is a generation of an intuitionistic fuzzy set. The aggregation operators are important tools in the process of information aggregation. Some aggregation operators for picture fuzzy sets have been proposed in previous papers, but some of them are defective for picture fuzzy multi-attribute decision making. In this paper, we introduce a transformation method for a picture fuzzy

    更新日期:2021-01-12
  • Dyson’s Equations for Quantum Gravity in the Hartree–Fock Approximation
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Herbert W. Hamber; Lu Heng Sunny Yu

    Unlike scalar and gauge field theories in four dimensions, gravity is not perturbatively renormalizable and as a result perturbation theory is badly divergent. Often the method of choice for investigating nonperturbative effects has been the lattice formulation, and in the case of gravity the Regge–Wheeler lattice path integral lends itself well for that purpose. Nevertheless, lattice methods ultimately

    更新日期:2021-01-12
  • Strong-Interaction Matter under Extreme Conditions from Chiral Quark Models with Nonlocal Separable Interactions
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Daniel Gómez Dumm; Juan Pablo Carlomagno; Norberto N. Scoccola

    We review the current status of the research on effective nonlocal NJL-like chiral quark models with separable interactions, focusing on the application of this approach to the description of the properties of hadronic and quark matter under extreme conditions. The analysis includes the predictions for various hadron properties in vacuum, as well as the study of the features of deconfinement and chiral

    更新日期:2021-01-12
  • Free Convection Heat Transfer and Entropy Generation in an Odd-Shaped Cavity Filled with a Cu-Al2O3 Hybrid Nanofluid
    Symmetry (IF 2.645) Pub Date : 2021-01-12
    Mohammad Ghalambaz; Seyed Mohsen Hashem Zadeh; Ali Veismoradi; Mikhail A. Sheremet; Ioan Pop

    The present paper aims to analyze the thermal convective heat transport and generated irreversibility of water-Cu-Al2O3 hybrid nanosuspension in an odd-shaped cavity. The side walls are adiabatic, and the internal and external borders of the enclosure are isothermally kept at high and low temperatures of Thand Tc, respectively. The control equations based on conservation laws are formulated in dimensionless

    更新日期:2021-01-12
  • Influence of Load and Phase of Contraction on Lateral Symmetries in Flywheel Squats
    Symmetry (IF 2.645) Pub Date : 2021-01-11
    Darjan Smajla; Darjan Spudić; Nejc Šarabon

    Assessment of lateral symmetries (LS) of lower limbs has been widely investigated. However, there are no studies about LS during exposure to high eccentric and concentric loads during flywheel (FW) squats. A total of 422 young, physically active participants performed squats on an FW device with different equidistant loads (0.05, 0.125 and 0.2 kg∙m2). The mean and peak force of the left and right leg

    更新日期:2021-01-11
  • Solid-State Structural Transformation and Photoluminescence Properties of Supramolecular Coordination Compounds
    Symmetry (IF 2.645) Pub Date : 2021-01-11
    Dipankar Ghosh; Oddný Ragnarsdóttir; Daníel Arnar Tómasson; Krishna K. Damodaran

    The combination of strong coordination bonds and hydrogen bonding interactions were used to generate a series of supramolecular coordination materials (SCMs), which was achieved by reacting a bis-pyridyl amide ligand, namely N-(4-pyridyl)nicotinamide (4PNA) with copper(II), zinc(II), and cadmium(II) benzoates. The SCMs were structurally characterized using X-ray diffraction and the key intermolecular

    更新日期:2021-01-11
  • An Ensemble of Global and Local-Attention Based Convolutional Neural Networks for COVID-19 Diagnosis on Chest X-ray Images
    Symmetry (IF 2.645) Pub Date : 2021-01-11
    Ahmed Afifi; Noor E Hafsa; Mona A. S. Ali; Abdulaziz Alhumam; Safa Alsalman

    The recent Coronavirus Disease 2019 (COVID-19) pandemic has put a tremendous burden on global health systems. Medical practitioners are under great pressure for reliable screening of suspected cases employing adjunct diagnostic tools to standard point-of-care testing methodology. Chest X-rays (CXRs) are appearing as a prospective diagnostic tool with easy-to-acquire, low-cost and less cross-contamination

    更新日期:2021-01-11
  • Forecasting Model and Related Index of Pig Population in China
    Symmetry (IF 2.645) Pub Date : 2021-01-11
    Fan Zhang; Fulin Wang; Fulin Wang

    The systematic and reasonable prediction of pig population is the basis for balance and symmetry between the supply and demand of hogs, which is of great significance to the pig industry. Based on the population prediction model and according to the principle of pig months transfer, this paper referred to the modeling principle and method of the discrete population quantity prediction model and established

    更新日期:2021-01-11
  • Relation Representation Learning Via Signed Graph Mutual Information Maximization for Trust Prediction
    Symmetry (IF 2.645) Pub Date : 2021-01-11
    Yongjun Jing; Hao Wang; Kun Shao; Xing Huo

    Trust prediction is essential to enhancing reliability and reducing risk from the unreliable node, especially for online applications in open network environments. An essential fact in trust prediction is to measure the relation of both the interacting entities accurately. However, most of the existing methods infer the trust relation between interacting entities usually rely on modeling the similarity

    更新日期:2021-01-11
  • Chiral Soliton Models and Nucleon Structure Functions
    Symmetry (IF 2.645) Pub Date : 2021-01-09
    Herbert Weigel; Ishmael Takyi

    We outline and review the computations of polarized and unpolarized nucleon structure functions within the bosonized Nambu-Jona-Lasinio chiral soliton model. We focus on a consistent regularization prescription for the Dirac sea contribution and present numerical results from that formulation. We also reflect on previous calculations on quark distributions in chiral quark soliton models and attempt

    更新日期:2021-01-10
  • A Comprehensive Study of HBase Storage Architecture—A Systematic Literature Review
    Symmetry (IF 2.645) Pub Date : 2021-01-09
    Muhammad Umair Hassan; Irfan Yaqoob; Sidra Zulfiqar; Ibrahim A. Hameed

    According to research, generally, 2.5 quintillion bytes of data are produced every day. About 90% of the world’s data has been produced in the last two years alone. The amount of data is increasing immensely. There is a fight to use and store this tremendous information effectively. HBase is the top option for storing huge data. HBase has been selected for several purposes, including its scalability

    更新日期:2021-01-10
  • Fuzzy Heuristics and Decision Tree for Classification of Statistical Feature-Based Control Chart Patterns
    Symmetry (IF 2.645) Pub Date : 2021-01-10
    Munawar Zaman; Adnan Hassan

    Monitoring manufacturing process variation remains challenging, especially within a rapid and automated manufacturing environment. Problematic and unstable processes may produce distinct time series patterns that could be associated with assignable causes for diagnosis purpose. Various machine learning classification techniques such as artificial neural network (ANN), classification and regression

    更新日期:2021-01-10
  • Path Planning of Hydraulic Support Pushing Mechanism Based on Extreme Learning Machine and Descartes Path Planning
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Suhua Li; Jiacheng Xie; Xuewen Wang; Fang Ren; Xin Zhang; Qingbao Bao

    As a floating system connecting hydraulic support and scraper conveyor, the path planning of pushing mechanism is of great significance for their coordinated movement. In this paper, a method for path planning of hydraulic support pushing mechanism based on extreme learning machine (ELM) and Descartes path planning is proposed. According to the motion characteristics of moving mechanism, it is transformed

    更新日期:2021-01-08
  • wUUNet: Advanced Fully Convolutional Neural Network for Multiclass Fire Segmentation
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Vladimir Sergeevich Bochkov; Liliya Yurievna Kataeva

    This article describes an AI-based solution to multiclass fire segmentation. The flame contours are divided into red, yellow, and orange areas. This separation is necessary to identify the hottest regions for flame suppression. Flame objects can have a wide variety of shapes (convex and non-convex). In that case, the segmentation task is more applicable than object detection because the center of the

    更新日期:2021-01-08
  • Obstacle Comparisons to Achieving Distance Learning and Applying Electronic Exams during COVID-19 Pandemic
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Raed Bashitialshaaer; Mohammed Alhendawi; Zohra Lassoued

    This study aims to identify obstacles and barriers to achieving quality distance learning and the use of electronic exams, comparing them to pursue success in the distance education system during the coronavirus pandemic (COVID-19). It also aimed to determine the similarity and differences between the two main components of distance education. This is based on a sample of evaluations from professors

    更新日期:2021-01-08
  • Extended Hořava Gravity with Physical Ground-State Wavefunction
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Fu-Wen Shu; Tao Zhang

    We propose a new extended theory of Hořava gravity based on the following three conditions: (i) power-counting renormalizable, (ii) healthy IR behavior and (iii) a stable vacuum state in a quantized version of the theory. Compared with other extended theories, we stress that any realistic theory of gravity must have physical ground states when quantization is performed. To fulfill the three conditions

    更新日期:2021-01-08
  • Neutral Delay Differential Equations: Oscillation Conditions for the Solutions
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Omar Bazighifan; Hammad Alotaibi; Abd Allaah A. Mousa

    The purpose of this article is to explore the asymptotic properties for a class of fourth-order neutral differential equations. Based on a comparison with the differential inequality of the first-order, we have provided new oscillation conditions for the solutions of fourth-order neutral differential equations. The obtained results can be used to develop and provide theoretical support for and to further

    更新日期:2021-01-08
  • Controlling Safety of Artificial Intelligence-Based Systems in Healthcare
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Mohammad Reza Davahli; Waldemar Karwowski; Krzysztof Fiok; Thomas Wan; Hamid R. Parsaei

    In response to the need to address the safety challenges in the use of artificial intelligence (AI), this research aimed to develop a framework for a safety controlling system (SCS) to address the AI black-box mystery in the healthcare industry. The main objective was to propose safety guidelines for implementing AI black-box models to reduce the risk of potential healthcare-related incidents and accidents

    更新日期:2021-01-08
  • Properties of Commuting Graphs over Semidihedral Groups
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Tao Cheng; Matthias Dehmer; Frank Emmert-Streib; Yongtao Li; Weijun Liu

    This paper considers commuting graphs over the semidihedral group SD8n. We compute their eigenvalues and obtain that these commuting graphs are not hyperenergetic for odd n≥15 or even n≥2. We further compute the Laplacian spectrum, the Laplacian energy and the number of spanning trees of the commuting graphs over SD8n. We also discuss vertex connectivity, planarity, and minimum disconnecting sets of

    更新日期:2021-01-08
  • Linear and Non-Linear Middle Infrared Spectra of Penicillin G in the CO Stretching Mode Region
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Elena Ragnoni; Sara Catalini; Maurizio Becucci; Andrea Lapini; Paolo Foggi

    In this work we report the linear and non-linear IR spectral response characterization of the CO bonds of PenicillinG sodium salt in D2O and in DMSO−d6 solutions. In order to better characterize the spectral IR features in the CO stretching region, broadband middle infrared pump-probe spectra are recorded. The role of hydrogen bonds in determining the inhomogeneous broadening and in tuning anharmonicity

    更新日期:2021-01-08
  • Positive Solutions for a Class of Nonlinear Singular Fractional Differential Systems with Riemann–Stieltjes Coupled Integral Boundary Value Conditions
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Daliang Zhao; Juan Mao

    In this paper, sufficient conditions ensuring existence and multiplicity of positive solutions for a class of nonlinear singular fractional differential systems are derived with Riemann–Stieltjes coupled integral boundary value conditions in Banach Spaces. Nonlinear functions f(t,u,v) and g(t,u,v) in the considered systems are allowed to be singular at every variable. The boundary conditions here are

    更新日期:2021-01-08
  • Induction Motor Multiclass Fault Diagnosis Based on Mean Impact Value and PSO-BPNN
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Chun-Yao Lee; Hong-Yi Ou

    This paper presents a feature selection model based on mean impact value (MIV) to solve induction motor (IM) fault diagnosis on the current signal. In this paper, particle swarm optimization (PSO) is combined with back propagation neural network (BPNN) to classify the current signal of IM. First, the purpose of this study is to establish IM fault diagnosis system. Additionally, this study proposes

    更新日期:2021-01-08
  • Blood Pressure Correlates Asymmetrically with Neuropeptidase Activities of the Left and Right Frontal Cortices
    Symmetry (IF 2.645) Pub Date : 2021-01-08
    Ana Belén Segarra; Isabel Prieto; Inmaculada Banegas; Magdalena Martínez-Cañamero; Marc de Gasparo; Manuel Ramírez-Sánchez

    It was suggested that the brain-heart connection is asymmetrically organized. However, evidence connecting neurochemical factors from each brain hemisphere with changes in cardio-vascular functions have not yet been reported. In order to analyze potential asymmetrical connections between brain neurochemical factors with cardio-vascular functions, we studied the level of correlations between the left

    更新日期:2021-01-08
  • Stereoselective Synthesis of Chiral α-SCF3-β-Ketoesters Featuring a Quaternary Stereocenter
    Symmetry (IF 2.645) Pub Date : 2021-01-07
    Monica Fiorenza Boselli; Chiara Faverio; Elisabetta Massolo; Laura Raimondi; Alessandra Puglisi; Maurizio Benaglia

    The development of new and efficient methods, reagents, and catalysts for the introduction of fluorine atoms or fluorinated moieties in molecular scaffolds has become a topic of paramount importance in organic synthesis. In this framework, the incorporation of the SCF3 group into organic molecule has often led to beneficial effects on the drug’s metabolic stability and bioavailability. Here we report

    更新日期:2021-01-07
  • Two-Dimensional Numerical Model for Stability Analysis of Tunnel Face Based on Particle Flow Code
    Symmetry (IF 2.645) Pub Date : 2021-01-07
    Tingwei Xie; Kaihang Han

    In this paper, numerical simulations of face stability of shallow tunnels are carried out by using the particle discrete element codes PFC2D from the microscopic view. Progressive instability of the tunnel face is achieved through the withdrawal of the baffle used to simulate the tunnel face. Under different retreating displacement of the tunnel face, the evolution laws of support pressure on the tunnel

    更新日期:2021-01-07
  • Experimental Study on Heating Performances of Integrated Battery and HVAC System with Serial and Parallel Circuits for Electric Vehicle
    Symmetry (IF 2.645) Pub Date : 2021-01-07
    Taek-Kyu Lim; Kunal Sandip Garud; Jae-Hyeong Seo; Moo-Yeon Lee; Dong-Yeon Lee

    The objective of the present study is to conduct experiments for investigating heating performances of integrated system with serial and parallel circuits for battery and heating ventilation and air conditioning system (HVAC) of electric vehicles under various operating conditions. In addition, the artificial neural network (ANN) model is proposed to accurately predict the heating performances of integrated

    更新日期:2021-01-07
  • Symmetric Properties for Dirichlet-Type Multiple (p,q)-L-Function
    Symmetry (IF 2.645) Pub Date : 2021-01-07
    Kyung-Won Hwang; Ravi P. Agarwal; Cheon Seoung Ryoo

    The main aim of this article is to investigate some interesting symmetric identities for the Dirichlet-type multiple (p,q)-L function. We use this function to examine the symmetry of the generalized higher-order (p,q)-Euler polynomials related to χ. First, the generalized higher-order (p,q)-Euler numbers and polynomials related to χ are defined. We also give a few new symmetric properties for the Dirichlet-type

    更新日期:2021-01-07
  • Improving Quantum Search on Simple Graphs by Pretty Good Structured Oracles
    Symmetry (IF 2.645) Pub Date : 2021-01-07
    Matteo G. A. Paris; Claudia Benedetti; Stefano Olivares

    Quantum search algorithms provide a way to speed up combinatorial search, and have found several applications in modern quantum technology. In particular, spatial search on graphs, based on continuous-time quantum walks (CTQW), represents a promising platform for the implementation of quantum search in condensed matter systems. CTQW-based algorithms, however, work exactly on complete graphs, while

    更新日期:2021-01-07
  • Personal Credit Risk Evaluation Model of P2P Online Lending Based on AHP
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Fengpei Wu; Xiang Su; Young Seok Ock; Zhiying Wang

    With the rapid development of the P2P (peer-to-peer) online lending industry, which is facing significant credit risk, personal credit evaluation is an important method to reduce credit risk. Based on the various indexes of personal credit risk evaluation of domestic and foreign commercial banks, and according to the characteristics of P2P online lending, this paper analyzes the factors that affect

    更新日期:2021-01-06
  • A Novel Video Steganography-Based Botnet Communication Model in Telegram SNS Messenger
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Minkyung Kwak; Youngho Cho

    In botnets, a bot master regularly sends command and control messages (C & C messages) to bots for various purposes, such as ordering its commands to bots and collecting critical data from bots. Although such C & C messages can be encrypted by cryptographic methods to hide them, existing botnet detection mechanisms could detect the existence of botnets by capturing suspicious network traffics between

    更新日期:2021-01-06
  • Influence of Time Delay on Controlling the Non-Linear Oscillations of a Rotating Blade
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Yasser Salah Hamed; Ali Kandil

    Time delay is an obstacle in the way of actively controlling non-linear vibrations. In this paper, a rotating blade’s non-linear oscillations are reduced via a time-delayed non-linear saturation controller (NSC). This controller is excited by a positive displacement signal measured from the sensors on the blade, and its output is the suitable control force applied onto the actuators on the blade driving

    更新日期:2021-01-06
  • Design, Analysis, and Comparison of Control Strategies for an Industrial Robotic Arm Driven by a Multi-Level Inverter
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Claudio Urrea; Daniel Jara

    In this article, we present the design and implementation of different control strategies for the position of a 2-Degree-of-Freedom (DoF) robotic arm, namely gain scheduling per trenches, gain scheduling by interpolation, adaptive control, and fuzzy logic. The first link of this robot is driven by an Alternating Current Brushless Permanent Magnet Motor (ACBPMM) through a three-phase multi-level inverter

    更新日期:2021-01-06
  • Pattern Recognition of Grating Perimeter Intrusion Behavior in Deep Learning Method
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Xianfeng Li; Sen Xu; Xiaopeng Hua

    An intrusion behavior recognition method based on deep learning is proposed in this paper in order to improve the recognition accuracy of raster perimeter intrusion behavior. The Mach–Zehnder fiber optic interferometer was used to collect the external vibration signal sensing unit, capture the external vibration signal, use the cross-correlation characteristic method to obtain the minimum frame length

    更新日期:2021-01-06
  • Characterization of Insulin Mucoadhesive Buccal Films: Spectroscopic Analysis and In Vivo Evaluation
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Maram Diab; Al-Sayed Sallam; Imad Hamdan; Randa Mansour; Rohanah Hussain; Giuliano Siligardi; Nidal Qinna; Enam Khalil

    Insulin mucoadhesive buccal films (MBF) are a noninvasive insulin delivery system that offers an advantageous alternative route of administration to subcutaneous injection. One major concern in the formulation of insulin MBF is the preservation of an insulin secondary structure in the presence of the other film components. Buccal films were formulated using chitosan, glycerin, and L-arginine. The MBF-forming

    更新日期:2021-01-06
  • Scalarized Nutty Wormholes
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Rustam Ibadov; Burkhard Kleihaus; Jutta Kunz; Sardor Murodov

    We construct scalarized wormholes with a NUT charge in higher curvature theories. We consider both Einstein-scalar-Gauss-Bonnet and Einstein-scalar-Chern-Simons theories, following Brihaye, Herdeiro and Radu, who recently studied spontaneously scalarised Schwarzschild-NUT solutions. By varying the coupling parameter and the scalar charge we determine the domain of existence of the scalarized nutty

    更新日期:2021-01-06
  • A Novel Global Sensitivity Measure Based on Probability Weighted Moments
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    Shufang Song; Lu Wang

    Global sensitivity analysis (GSA) is a useful tool to evaluate the influence of input variables in the whole distribution range. Variance-based methods and moment-independent methods are widely studied and popular GSA techniques despite their several shortcomings. Since probability weighted moments (PWMs) include more information than classical moments and can be accurately estimated from small samples

    更新日期:2021-01-06
  • Lacunary Möbius Fractals on the Unit Disk
    Symmetry (IF 2.645) Pub Date : 2021-01-06
    L. K. Mork; Keith Sullivan; Darin J. Ulness

    Centered polygonal lacunary functions are a type of lacunary function that exhibit behaviors that set them apart from other lacunary functions, this includes rotational symmetry. This work will build off of earlier studies to incorporate the automorphism group of the open unit disk D, which is a subgroup of the Möbius transformations. The behavior, dimension, dynamics, and sensitivity of filled-in

    更新日期:2021-01-06
  • Functional Lateralization of the Mirror Neuron System in Monkey and Humans
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Antonino Errante; Leonardo Fogassi

    To date, both in monkeys and humans, very few studies have addressed the issue of the lateralization of the cortical parietal and premotor areas involved in the organization of voluntary movements and in-action understanding. In this review, we will first analyze studies in the monkey, describing the functional properties of neurons of the parieto-frontal circuits, involved in the organization of reaching-grasping

    更新日期:2021-01-05
  • Generalized Semi-Symmetric Non-Metric Connections of Non-Integrable Distributions
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Tong Wu; Yong Wang

    In this work, the cases of non-integrable distributions in a Riemannian manifold with the first generalized semi-symmetric non-metric connection and the second generalized semi-symmetric non-metric connection are discussed. We obtain the Gauss, Codazzi, and Ricci equations in both cases. Moreover, Chen’s inequalities are also obtained in both cases. Some new examples based on non-integrable distributions

    更新日期:2021-01-05
  • Evaluating the Coding Performance of 360° Image Projection Formats Using Objective Quality Metrics
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Ikram Hussain; Oh-Jin Kwon; Seungcheol Choi

    Recently, 360° content has emerged as a new method for offering real-life interaction. Ultra-high resolution 360° content is mapped to the two-dimensional plane to adjust to the input of existing generic coding standards for transmission. Many formats have been proposed, and tremendous work is being done to investigate 360° videos in the Joint Video Exploration Team using projection-based coding. However

    更新日期:2021-01-05
  • Detection of False Synchronization of Stereo Image Transmission Using a Convolutional Neural Network
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Joanna Kulawik; Mariusz Kubanek

    The subject of the work described in this article is the detection of false synchronization in the transmission of digital stereo images. Until now, the synchronization problem was solved by using start triggers in the recording. Our proposal checks the discrepancy between the received pairs of images, which allows you to detect delays in transferring images between the left camera and the right camera

    更新日期:2021-01-05
  • Fluctuation–Dissipation Relations in Active Matter Systems
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Lorenzo Caprini; Andrea Puglisi; Alessandro Sarracino

    We investigate the non-equilibrium character of self-propelled particles through the study of the linear response of the active Ornstein–Uhlenbeck particle (AOUP) model. We express the linear response in terms of correlations computed in the absence of perturbations, proposing a particularly compact and readable fluctuation–dissipation relation (FDR): such an expression explicitly separates equilibrium

    更新日期:2021-01-05
  • New Conditions for Univalence of Confluent Hypergeometric Function
    Symmetry (IF 2.645) Pub Date : 2021-01-05
    Georgia Irina Oros

    Since in many particular cases checking directly the conditions from the definitions of starlikeness or convexity of a function can be difficult, in this paper we use the theory of differential subordination and in particular the method of admissible functions in order to determine conditions of starlikeness and convexity for the confluent (Kummer) hypergeometric function of the first kind. Having

    更新日期:2021-01-05
  • Non-Extensive Thermodynamics Effects in the Cosmology of f(T) Gravity
    Symmetry (IF 2.645) Pub Date : 2021-01-04
    Asmaa G. Shalaby; Vasilis K. Oikonomou; Gamal G. L. Nashed

    Using f(T) gravitational theory, we construct modified cosmological models via the first law of thermodynamics by using the non-extensive thermodynamics framework, the effects of which are captured by the parameter δ. The resulting cosmological equations are modified compared to the standard Einstein-Hilbert ones, with the modifications coming from the f(T) gravitational theory and from the non-extensive

    更新日期:2021-01-04
  • On Quasi Gyrolinear Maps between Möbius Gyrovector Spaces Induced from Finite Matrices
    Symmetry (IF 2.645) Pub Date : 2021-01-04
    Keiichi Watanabe

    We present some fundamental results concerning to continuous quasi gyrolinear operators between Möbius gyrovector spaces induced by finite matrices. Such mappings are significant like as operators induced by matrices between finite dimensional Hilbert spaces. This gives a novel approach to the study of mappings between Möbius gyrovector spaces that should correspond to bounded linear operators on real

    更新日期:2021-01-04
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