All Stories

  1. Autonomous Navigation System for a Differential Drive Mobile Robot

    Article • Journal of Testing and Evaluation, January 2024, ASTM International

    Antonio Lopes

  2. Adaptive fuzzy variable fractional-order sliding mode vibration control of uncertain building structures

    Article • Engineering Structures, May 2023, Elsevier

    Antonio Lopes

  3. State-of-charge estimation for lithium-ion batteries based on incommensurate fractional-order observer

    Article • Communications in Nonlinear Science and Numerical Simulation, April 2023, Elsevier

    Antonio Lopes

  4. A Numerical Algorithm for Solving Nonlocal Nonlinear Stochastic Delayed Systems with Variable-Order Fractional Brownian Noise

    Article • Fractal and Fractional, March 2023, MDPI AG

    Antonio Lopes

  5. State-of-health estimation of Lithium-ion battery based on back-propagation neural network with adaptive hidden layer

    Article • Neural Computing and Applications, March 2023, Springer Science + Business Media

    Antonio Lopes

  6. Integration of Stand-Alone Controlled Active Power Filters in Harmonic Power Flow of Radial Distribution Networks

    Article • Energies, March 2023, MDPI AG

    Antonio Lopes

  7. Disturbance observer-based delayed robust feedback control design for a class of uncertain variable fractional-order systems: Order-dependent and delay-dependent stability

    Article • ISA Transactions, March 2023, Elsevier

    Antonio Lopes

  8. Identifying Weak Adhesion in Single-Lap Joints Using Lamb Wave Data and Artificial Intelligence Algorithms

    Article • Applied Sciences, February 2023, MDPI AG

    Antonio Lopes

  9. Numerical Design of a Thread-Optimized Gripping System for Lap Joint Testing in a Split Hopkinson Apparatus

    Article • Sensors, February 2023, MDPI AG

    Antonio Lopes

  10. Improved Parameter Identification for Lithium-Ion Batteries Based on Complex-Order Beetle Swarm Optimization Algorithm

    Article • Micromachines, February 2023, MDPI AG

    Antonio Lopes

  11. Stability and Stabilization of Fractional-Order Uncertain Nonlinear Systems With Multiorder

    Article • IEEE Transactions on Circuits & Systems II Express Briefs, February 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  12. Solving a System of Integral Equations in Rectangular Menger Probabilistic Metric Spaces and Rectangular Menger Probabilistic b-Metric Spaces

    Article • Symmetry, December 2022, MDPI AG

    Antonio Lopes

  13. Investigation and Analysis of Sea Surface Temperature and Precipitation of the Southern Caspian Sea Using Wavelet Analysis

    Article • Axioms, December 2022, MDPI AG

    Antonio Lopes

  14. Assessing the research and teaching performance of the mechanical engineering teaching staff at FEUP

    Article • International Journal of Mechanical Engineering Education, December 2022, SAGE Publications

    Antonio Lopes

  15. Robot-Assisted Gravity Offloading Testing of Aerospace Structures

    Article • Journal of Testing and Evaluation, December 2022, ASTM International

    Antonio Lopes

  16. Asymptotic Stability of Fractional-Order Incommensurate Neural Networks

    Article • Neural Processing Letters, November 2022, Springer Science + Business Media

    Antonio Lopes

  17. Variable Fractional-Order Equivalent Circuit Model for Lithium-Ion Battery via Chaotic Adaptive Fractional Particle Swarm Optimization Method

    Article • Symmetry, November 2022, MDPI AG

    Antonio Lopes

  18. LMI-Based Delayed Output Feedback Controller Design for a Class of Fractional-Order Neutral-Type Delay Systems Using Guaranteed Cost Control Approach

    Article • Entropy, October 2022, MDPI AG

    Antonio Lopes

  19. A New Approach to Approximate Solutions of Single Time-Delayed Stochastic Integral Equations via Orthogonal Functions

    Article • Symmetry, October 2022, MDPI AG

    Antonio Lopes

  20. A Chebyshev collocation method for solving the non-linear variable-order fractional Bagley–Torvik differential equation

    Article • International Journal of Nonlinear Sciences and Numerical Simulation, October 2022, De Gruyter

    Antonio Lopes

  21. Guaranteed Cost Consensus for a Class of Fractional-order Uncertain Multi-agent Systems with State Time Delay

    Article • International Journal of Control Automation and Systems, September 2022, Springer Science + Business Media

    Antonio Lopes

  22. Improved Confidence Interval and Hypothesis Testing for the Ratio of the Coefficients of Variation of Two Uncorrelated Populations

    Article • Mathematics, September 2022, MDPI AG

    Antonio Lopes

  23. Measuring Cross-Correlations, Contagion and Long-Range Behavior between Fires in Brazil and Some Time Series Related to Its Economic Growth

    Article • Fire, September 2022, MDPI AG

    Antonio Lopes

  24. Hybridization of Block-Pulse and Taylor Polynomials for Approximating 2D Fractional Volterra Integral Equations

    Article • Fractal and Fractional, September 2022, MDPI AG

    Antonio Lopes

  25. Fuzzy Fractional-Order PD Vibration Control of Uncertain Building Structures

    Article • Fractal and Fractional, August 2022, MDPI AG

    Antonio Lopes

  26. Parameter Identification for Lithium-Ion Battery Based on Hybrid Genetic–Fractional Beetle Swarm Optimization Method

    Article • Mathematics, August 2022, MDPI AG

    Antonio Lopes

  27. Adaptive state-of-charge estimation of lithium-ion batteries based on square-root unscented Kalman filter

    Article • Energy, August 2022, Elsevier

    Antonio Lopes

  28. Nonlinear Dynamics

    Article • Mathematics, July 2022, MDPI AG

    Antonio Lopes

  29. Spectral Solutions for Fractional Black–Scholes Equations

    Article • Mathematical Problems in Engineering, July 2022, Hindawi Publishing Corporation

    Antonio Lopes

  30. Fractional Order Systems and Their Applications

    Article • Fractal and Fractional, July 2022, MDPI AG

    Antonio Lopes

  31. Multiplicity results for a nonlocal fractional problem

    Article • Computational and Applied Mathematics, July 2022, Springer Science + Business Media

    Antonio Lopes

  32. Numerical Approximation of the Fractional Rayleigh–Stokes Problem Arising in a Generalised Maxwell Fluid

    Article • Fractal and Fractional, July 2022, MDPI AG

    Antonio Lopes

  33. Damage Classification Methodology Utilizing Lamb Waves and Artificial Neural Networks

    Article • Journal of Testing and Evaluation, June 2022, ASTM International

    Antonio Lopes

  34. Special issue: Machines and components solutions and applications

    Article • Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, June 2022, SAGE Publications

    Antonio Lopes

  35. Revisiting the Formula for the Ramanujan Constant of a Series

    Article • Mathematics, May 2022, MDPI AG

    Antonio Lopes

  36. Feature extraction and visualization for damage detection on adhesive joints, utilizing lamb waves and supervised machine learning algorithms

    Article • Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, April 2022, SAGE Publications

    Antonio Lopes

  37. Synchronization of Incommensurate Fractional-Order Chaotic Systems Based on Linear Feedback Control

    Article • Fractal and Fractional, April 2022, MDPI AG

    Antonio Lopes

  38. Multidimensional scaling and visualization of patterns in global large-scale accidents

    Article • Chaos Solitons & Fractals, April 2022, Elsevier

    Antonio Lopes

  39. Development of a Multi-Station Creep Machine for Adhesive Joint Testing

    Article • Journal of Testing and Evaluation, March 2022, ASTM International

    Antonio Lopes

  40. Nonlinear Differential Equations with Distributed Delay: Some New Oscillatory Solutions

    Article • Mathematics, March 2022, MDPI AG

    Antonio Lopes

  41. How Many Fractional Derivatives Are There?

    Article • Mathematics, February 2022, MDPI AG

    Antonio Lopes

  42. Effect of mechanical properties and geometric dimensions on electromechanical impedance signatures for adhesive joint integrity monitoring

    Article • Mechanics of Advanced Materials and Structures, February 2022, Taylor & Francis

    Antonio Lopes

  43. Intelligence, Beliefs on IQ and Learning Style predict Academic Performance in Mechanical Engineering Students

    Article • U Porto Journal of Engineering, February 2022, Faculdade de Engenharia - Universidade do Port

    Antonio Lopes

  44. Leader-follower non-fragile consensus of delayed fractional-order nonlinear multi-agent systems

    Article • Applied Mathematics and Computation, February 2022, Elsevier

    Antonio Lopes

  45. State-of-Charge Estimation of Lithium-Ion Batteries Based on Fractional-Order Square-Root Unscented Kalman Filter

    Article • Fractal and Fractional, January 2022, MDPI AG

    Antonio Lopes

  46. In memory of Professor José António Tenreiro Machado (1957–2021)

    Article • Nonlinear Dynamics, January 2022, Springer Science + Business Media

    Antonio Lopes

  47. A pseudo-spectral scheme for variable order fractional stochastic Volterra integro-differential equations

    Article • AIMS Mathematics, January 2022, American Institute of Mathematical Sciences (AIMS)

    Antonio Lopes

  48. Shifted Fractional-Order Jacobi Collocation Method for Solving Variable-Order Fractional Integro-Differential Equation with Weakly Singular Kernel

    Article • Fractal and Fractional, December 2021, MDPI AG

    Antonio Lopes

  49. Fractional-order shifted Legendre collocation method for solving non-linear variable-order fractional Fredholm integro-differential equations

    Article • Computational and Applied Mathematics, December 2021, Springer Science + Business Media

    Antonio Lopes

  50. Strain-induced effects of topological deformed graphene

    Article • Journal of Magnetism and Magnetic Materials, December 2021, Elsevier

    Antonio Lopes

  51. Fractional-Order Sensing and Control: Embedding the Nonlinear Dynamics of Robot Manipulators into the Multidimensional Scaling Method

    Article • Sensors, November 2021, MDPI AG

    Antonio Lopes

  52. Overview in Summabilities: Summation Methods for Divergent Series, Ramanujan Summation and Fractional Finite Sums

    Article • Mathematics, November 2021, MDPI AG

    Antonio Lopes

  53. Guaranteed Cost Leaderless Consensus Protocol Design for Fractional-Order Uncertain Multi-Agent Systems with State and Input Delays

    Article • Fractal and Fractional, September 2021, MDPI AG

    Antonio Lopes

  54. Structural health monitoring of adhesive joints using Lamb waves: A review

    Article • Structural Control and Health Monitoring, September 2021, Wiley

    Antonio Lopes

  55. Selecting the future

    Article • Journal on Teaching Engineering, September 2021, Faculdade de Engenharia - Universidade do Port

    Antonio Lopes

  56. Numerical solutions for variable-order fractional Gross–Pitaevskii equation with two spectral collocation approaches

    Article • International Journal of Nonlinear Sciences and Numerical Simulation, August 2021, De Gruyter

    Antonio Lopes

  57. State of Charge Estimation of Lithium-Ion Batteries Based on Fuzzy Fractional-Order Unscented Kalman Filter

    Article • Fractal and Fractional, August 2021, MDPI AG

    Antonio Lopes

  58. Uniform Manifold Approximation and Projection Analysis of Soccer Players

    Article • Entropy, June 2021, MDPI AG

    Antonio Lopes

  59. Assessing the Effect of Laboratory Activities on Core Curricular Units of an Engineering Master’s Program: A Multivariate Analysis

    Article • Mathematical Problems in Engineering, June 2021, Hindawi Publishing Corporation

    Antonio Lopes

  60. Entropy analysis of human death uncertainty

    Article • Nonlinear Dynamics, May 2021, Springer Science + Business Media

    Antonio Lopes

  61. Correlating entrance data and first year academic performance of students enrolled in the Integrated Master in Mechanical Engineering at the University of Porto

    Article • International Journal of Mechanical Engineering Education, May 2021, SAGE Publications

    Antonio Lopes

  62. Dynamical Analysis of the Dow Jones Index Using Dimensionality Reduction and Visualization

    Article • Entropy, May 2021, MDPI AG

    Antonio Lopes

  63. Development of a Split Hopkinson Pressure Bar Machine for High Strain Rate Testing of Bonded Joints

    Article • Journal of Testing and Evaluation, May 2021, ASTM International

    Ricardo Carbas, Antonio Lopes

  64. Design of a new pneumatic impact actuator of a Split Hopkinson Pressure Bar (SHPB) setup for tensile and compression testing of structural adhesives

    Article • Mechanism and Machine Theory, May 2021, Elsevier

    Antonio Lopes

  65. A review of structural health monitoring of bonded structures using electromechanical impedance spectroscopy

    Article • Structural Health Monitoring, March 2021, SAGE Publications

    Antonio Lopes

  66. Reformulation of the Integrated Master in Mechanical Engineering (MIEM) at FEUP in Two Cycles of Studies (Bachelor and Master)

    Article • U Porto Journal of Engineering, February 2021, Faculdade de Engenharia - Universidade do Port

    Antonio Lopes

  67. Shifted fractional Legendre spectral collocation technique for solving fractional stochastic Volterra integro-differential equations

    Article • Engineering With Computers, January 2021, Springer Science + Business Media

    Antonio Lopes

  68. A Review of Fractional Order Entropies

    Article • Entropy, December 2020, MDPI AG

    Antonio Lopes

  69. Multidimensional scaling analysis of generalized mean discrete-time fractional order controllers

    Article • Communications in Nonlinear Science and Numerical Simulation, December 2020, Elsevier

    Antonio Lopes

  70. Thermal Chamber for Adhesives Creep Multi-Station Testing Machine

    Article • U Porto Journal of Engineering, November 2020, Faculdade de Engenharia - Universidade do Port

    Antonio Lopes

  71. Modeling and visualizing competitiveness in soccer leagues

    Article • Applied Mathematical Modelling, November 2020, Elsevier

    Antonio Lopes

  72. Spontaneous activation under atrial fibrosis: a model using complex order derivatives

    Article • Communications in Nonlinear Science and Numerical Simulation, November 2020, Elsevier

    Antonio Lopes

  73. A variable-order fractional proportional-integral controller and its application to a permanent magnet synchronous motor

    Article • Alexandria Engineering Journal, October 2020, Elsevier

    Antonio Lopes

  74. Analysis of a rectangular prism n-units RLC fractional-order circuit network

    Article • Alexandria Engineering Journal, October 2020, Elsevier

    Antonio Lopes

  75. A COMPLEX ORDER MODEL OF ATRIAL ELECTRICAL PROPAGATION FROM FRACTAL POROUS CELL MEMBRANE

    Article • Fractals, September 2020, World Scientific Pub Co Pte Lt

    Antonio Lopes

  76. Novel Torsion Machine to Test Adhesive Joints

    Article • July 2020, Springer Science + Business Media

    Antonio Lopes

  77. Computer Analysis of Human Belligerency

    Article • Mathematics, July 2020, MDPI AG

    Antonio Lopes

  78. Output-feedback-guaranteed cost control of fractional-order uncertain linear delayed systems

    Article • Computational and Applied Mathematics, July 2020, Springer Science + Business Media

    Antonio Lopes

  79. Symmetry in Complex Systems

    Article • Symmetry, June 2020, MDPI AG

    Antonio Lopes

  80. A novel color image encryption algorithm based on a fractional-order discrete chaotic neural network and DNA sequence operations

    Article • Frontiers of Information Technology & Electronic Engineering, June 2020, Journal of Zhejiang University SCIENCE

    Antonio Lopes

  81. Rare and extreme events: the case of COVID-19 pandemic

    Article • Nonlinear Dynamics, May 2020, Springer Science + Business Media

    Antonio Lopes

  82. Fractional-order modelling of epoxy resin

    Article • Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, May 2020, Royal Society Publishing

    Antonio Lopes

  83. Shifted fractional Jacobi collocation method for solving fractional functional differential equations of variable order

    Article • Chaos Solitons & Fractals, May 2020, Elsevier

    Antonio Lopes

  84. Numerical assessment of strain rate in an adhesive layer throughout double cantilever beam and end notch flexure tests

    Article • Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, April 2020, SAGE Publications

    Antonio Lopes

  85. Improved Decentralized Fractional PD Control of Structure Vibrations

    Article • Mathematics, March 2020, MDPI AG

    Antonio Lopes

  86. Fractional Dynamics in Soccer Leagues

    Article • Symmetry, March 2020, MDPI AG

    Antonio Lopes

  87. Highly accurate technique for solving distributed-order time-fractional-sub-diffusion equations of fourth order

    Article • Computational and Applied Mathematics, February 2020, Springer Science + Business Media

    Antonio Lopes

  88. Variable coefficient fractional-order PID controller and its application to a SEPIC device

    Article • IET Control Theory and Applications, January 2020, the Institution of Engineering and Technology (the IET)

    Antonio Lopes, Professor Jose Tenreiro Machado

  89. Fractional Dynamics and Pseudo-Phase Space of Country Economic Processes

    Article • Mathematics, January 2020, MDPI AG

    Antonio Lopes

  90. Multidimensional Scaling Locus of Memristor and Fractional Order Elements

    Article • Journal of Advanced Research, January 2020, Elsevier

    Antonio Lopes

  91. Vehicle Lateral Dynamic Identification Method Based on Adaptive Algorithm

    Article • IEEE Open Journal of Vehicular Technology, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  92. The Fractional View of Complexity

    Article • Entropy, December 2019, MDPI AG

    Antonio Lopes

  93. Time-fractional dependence of the shear force in some beam type problems with negative Young modulus

    Article • Applied Mathematical Modelling, December 2019, Elsevier

    Antonio Lopes

  94. A computational perspective of the periodic table of elements

    Article • Communications in Nonlinear Science and Numerical Simulation, November 2019, Elsevier

    Antonio Lopes

  95. The Lorentz transformations and one observation in the perspective of fractional calculus

    Article • Communications in Nonlinear Science and Numerical Simulation, November 2019, Elsevier

    Antonio Lopes

  96. Multidimensional Scaling and Visualization of Patterns in Prime Numbers

    Article • Communications in Nonlinear Science and Numerical Simulation, November 2019, Elsevier

    Antonio Lopes

  97. On the Numerical Computation of the Mittag–Leffler Function

    Article • International Journal of Nonlinear Sciences and Numerical Simulation, October 2019, De Gruyter

    Prof. Manuel D Ortigueira, Antonio Lopes

  98. Fractional-order kinematic analysis of biomechanical inspired manipulators

    Article • Journal of Vibration and Control, October 2019, SAGE Publications

    Antonio Lopes

  99. Delay-dependent criterion for asymptotic stability of a class of fractional-order memristive neural networks with time-varying delays

    Article • Neural Networks, October 2019, Elsevier

    Antonio Lopes

  100. Development of a Drop Weight Machine for Adhesive Joint Testing

    Article • Journal of Testing and Evaluation, August 2019, ASTM International

    Antonio Lopes

  101. Electrochemical impedance spectroscopy characterization of beverages

    Article • Food Chemistry, August 2019, Elsevier

    Antonio Lopes

  102. On the Complexity Analysis and Visualization of Musical Information

    Article • Entropy, July 2019, MDPI AG

    Antonio Lopes

  103. Computational scheme for solving nonlinear fractional stochastic differential equations with delay

    Article • Stochastic Analysis and Applications, June 2019, Taylor & Francis

    Dr. Behrouz Parsa moghaddam, Antonio Lopes

  104. Sufficient conditions for existence and uniqueness of fractional stochastic delay differential equations

    Article • Stochastics, June 2019, Taylor & Francis

    Dr. Behrouz Parsa moghaddam, Antonio Lopes

  105. Shifted Jacobi–Gauss-collocation with convergence analysis for fractional integro-differential equations

    Article • Communications in Nonlinear Science and Numerical Simulation, June 2019, Elsevier

    Antonio Lopes

  106. Complexity Analysis of Escher’s Art

    Article • Entropy, May 2019, MDPI AG

    Antonio Lopes

  107. Fractional-order modeling of a diode

    Article • Communications in Nonlinear Science and Numerical Simulation, May 2019, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  108. Fractional Rényi entropy⋆

    Article • The European Physical Journal Plus, May 2019, Springer Science + Business Media

    Antonio Lopes

  109. A computational approach for the non-smooth solution of non-linear weakly singular Volterra integral equation with proportional delay

    Article • Numerical Algorithms, April 2019, Springer Science + Business Media

    Antonio Lopes

  110. Shifted fractional Jacobi spectral algorithm for solving distributed order time-fractional reaction–diffusion equations

    Article • Computational and Applied Mathematics, April 2019, Springer Science + Business Media

    Antonio Lopes

  111. Preface

    Article • April 2019, De Gruyter

    Antonio Lopes

  112. Preface

    Article • April 2019, De Gruyter

    Antonio Lopes

  113. Applications in Engineering, Life and Social Sciences, Part A

    Article • March 2019, De Gruyter

    Antonio Lopes, Prof. Omar Abu Arqub

  114. Applications in Engineering, Life and Social Sciences, Part B

    Article • March 2019, De Gruyter

    Antonio Lopes

  115. Numerical solution of mixed-type fractional functional differential equations using modified Lucas polynomials

    Article • Computational and Applied Mathematics, March 2019, Springer Science + Business Media

    Antonio Lopes

  116. Ranking the scientific output of researchers in fractional calculus

    Article • Fractional Calculus and Applied Analysis, February 2019, De Gruyter

    Professor Jose Tenreiro Machado, Antonio Lopes

  117. Entropy Analysis of Soccer Dynamics

    Article • Entropy, February 2019, MDPI AG

    Antonio Lopes

  118. Artistic painting: A fractional calculus perspective

    Article • Applied Mathematical Modelling, January 2019, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  119. On Fractional-Order Characteristics of Vegetable Tissues and Edible Drinks

    Article • January 2019, Springer Science + Business Media

    Antonio Lopes

  120. Analysis of Spontaneous EEG Activity in Alzheimer’s Disease Patients by Means of Multiscale Spectral Entropy

    Article • October 2018, Springer Science + Business Media

    Antonio Lopes

  121. Robust asymptotic stability of interval fractional-order nonlinear systems with time-delay

    Article • Journal of the Franklin Institute, October 2018, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  122. Power Law Behaviour in Complex Systems

    Article • Entropy, September 2018, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  123. A space–time spectral approximation for solving nonlinear variable-order fractional sine and Klein–Gordon differential equations

    Article • Computational and Applied Mathematics, August 2018, Springer Science + Business Media

    Antonio Lopes

  124. A fractional perspective to the modelling of Lisbon’s public transportation network

    Article • Transportation, August 2018, Springer Science + Business Media

    Antonio Lopes

  125. Atrial Rotor Dynamics Under Complex Fractional Order Diffusion

    Article • Frontiers in Physiology, July 2018, Frontiers

    Antonio Lopes

  126. Complex Systems and Fractional Dynamics

    Article • Entropy, July 2018, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  127. Complexity Analysis of Global Temperature Time Series

    Article • Entropy, June 2018, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  128. How Hydrogen Dielectric Strength Forces the Work Voltage in the Electric Discharge Machining

    Article • Micromachines, May 2018, MDPI AG

    Professor José Duarte Marafona, Antonio Lopes

  129. Towards fractional sensors

    Article • Journal of Vibration and Control, April 2018, SAGE Publications

    Antonio Lopes

  130. Dynamical analysis of the global business-cycle synchronization

    Article • PLoS ONE, February 2018, PLOS

    Professor Jose Tenreiro Machado, Antonio Lopes

  131. Corrigendum to “On the computation of the multidimensional Mittag–Leffler function” [Commun. Nonlinear Sci. Numer. Simulat. 53 (2017) 278–287]

    Article • Communications in Nonlinear Science and Numerical Simulation, February 2018, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  132. Discrete-time generalized mean fractional order controllers

    Article • IFAC-PapersOnLine, January 2018, Elsevier

    Antonio Lopes

  133. On spectral methods for solving variable-order fractional integro-differential equations

    Article • Computational and Applied Mathematics, December 2017, Springer Science + Business Media

    Antonio Lopes

  134. On the computation of the multidimensional Mittag-Leffler function

    Article • Communications in Nonlinear Science and Numerical Simulation, December 2017, Elsevier

    Prof. Manuel D Ortigueira, Professor Jose Tenreiro Machado, Antonio Lopes

  135. On the mathematical modeling of soccer dynamics

    Article • Communications in Nonlinear Science and Numerical Simulation, December 2017, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  136. Design of fractional-order hyper-chaotic multi-scroll systems based on hysteresis series

    Article • The European Physical Journal Special Topics, December 2017, Springer Science + Business Media

    Antonio Lopes

  137. Generation of a family of fractional order hyper-chaotic multi-scroll attractors

    Article • Chaos Solitons & Fractals, December 2017, Elsevier

    Antonio Lopes

  138. Fractional-Order Model of Wine

    Article • November 2017, Springer Science + Business Media

    Antonio Lopes

  139. Milk Characterization Using Electrical Impedance Spectroscopy and Fractional Models

    Article • Food Analytical Methods, October 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  140. Stability and synchronization of fractional-order memristive neural networks with multiple delays

    Article • Neural Networks, October 2017, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  141. The role of fractional calculus in modeling biological phenomena: A review

    Article • Communications in Nonlinear Science and Numerical Simulation, October 2017, Elsevier

    Antonio Lopes

  142. Analysis and implementation of a force control strategy for drilling operations with an industrial robot

    Article • Journal of the Brazilian Society of Mechanical Sciences and Engineering, September 2017, Springer Science + Business Media

    Antonio Lopes

  143. Computational comparison and pattern visualization of forest fires

    Article • Chaos Solitons & Fractals, September 2017, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  144. Stabilization of Uncertain Multi-Order Fractional Systems Based on the Extended State Observer

    Article • Asian Journal of Control, August 2017, Wiley

    Antonio Lopes

  145. Tidal Analysis Using Time–Frequency Signal Processing and Information Clustering

    Article • Entropy, July 2017, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  146. Nonlinear phenomena in mechanical robots and multibody mechanical systems

    Article • Advances in Mechanical Engineering, July 2017, SAGE Publications

    Professor Jose Tenreiro Machado, Antonio Lopes

  147. Complex systems in mechanical engineering

    Article • Advances in Mechanical Engineering, July 2017, SAGE Publications

    Professor Jose Tenreiro Machado, Antonio Lopes

  148. Approximation of data using non-integer harmonics series

    Article • Nonlinear Dynamics, June 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  149. A fractional perspective on the trajectory control of redundant and hyper-redundant robot manipulators

    Article • Applied Mathematical Modelling, June 2017, Elsevier

    Antonio Lopes

  150. Analysis and pattern identification on smart sensors data

    Article • June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  151. Temperature time series: Pattern analysis and forecasting

    Article • June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  152. Multidimensional scaling analysis of soccer dynamics

    Article • Applied Mathematical Modelling, May 2017, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  153. Computational Comparison and Visualization of Viruses in the Perspective of Clinical Information

    Article • Interdisciplinary Sciences Computational Life Sciences, April 2017, Springer Science + Business Media

    Antonio Lopes

  154. Fractional Jensen–Shannon Analysis of the Scientific Output of Researchers in Fractional Calculus

    Article • Entropy, March 2017, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  155. Dynamics of Commodities Prices: Integer and Fractional Models

    Article • Fundamenta Informaticae, March 2017, IOS Press

    Professor Jose Tenreiro Machado, Antonio Lopes

  156. Complex and Fractional Dynamics

    Article • Entropy, February 2017, MDPI AG

    Antonio Lopes

  157. Computational Complexity

    Article • Entropy, February 2017, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  158. Computational Analysis of the U.S. Forest Fires

    Article • Journal of Computational and Nonlinear Dynamics, January 2017, ASME International

    Professor Jose Tenreiro Machado, Antonio Lopes

  159. Jacobi Collocation Approximation for Solving Multi-dimensional Volterra Integral Equations

    Article • International Journal of Nonlinear Sciences and Numerical Simulation, January 2017, De Gruyter

    Professor Jose Tenreiro Machado, Antonio Lopes

  160. Demonstrations and Applications of Fractional-Order Devices

    Article • January 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  161. Devices

    Article • January 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  162. Fractional-Order Models of Vegetable Tissues

    Article • January 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  163. Future Directions

    Article • January 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  164. Introduction to Fractional-Order Elements and Devices

    Article • January 2017, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  165. Entropy Analysis of a Railway Network’s Complexity

    Article • Entropy, October 2016, MDPI AG

    Antonio Lopes

  166. On the fractional-order modeling of wine

    Article • European Food Research and Technology, October 2016, Springer Science + Business Media

    Antonio Lopes

  167. Design and implementation of grid multi-scroll fractional-order chaotic attractors

    Article • Chaos An Interdisciplinary Journal of Nonlinear Science, August 2016, American Institute of Physics

    Antonio Lopes

  168. The N -link pendulum: Embedding nonlinear dynamics into the multidimensional scaling method

    Article • Chaos Solitons & Fractals, August 2016, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  169. Relative fractional dynamics of stock markets

    Article • Nonlinear Dynamics, July 2016, Springer Science + Business Media

    Antonio Lopes

  170. Multidimensional scaling analysis of virus diseases

    Article • Computer Methods and Programs in Biomedicine, July 2016, Elsevier

    Antonio Lopes

  171. Empirical Laws and Foreseeing the Future of Technological Progress

    Article • Entropy, June 2016, MDPI AG

    Antonio Lopes

  172. Special issue on advances in fractional dynamics in mechanical engineering

    Article • Advances in Mechanical Engineering, June 2016, SAGE Publications

    Jordan Hristov, Antonio Lopes

  173. Analysis of global terrorism dynamics by means of entropy and state space portrait

    Article • Nonlinear Dynamics, April 2016, Springer Science + Business Media

    Antonio Lopes

  174. Dynamics of the N-link pendulum: a fractional perspective

    Article • International Journal of Control, January 2016, Taylor & Francis

    Professor Jose Tenreiro Machado, Antonio Lopes

  175. Application of Fractional Techniques in the Analysis of Forest Fires

    Article • International Journal of Nonlinear Sciences and Numerical Simulation, January 2016, De Gruyter

    Professor Jose Tenreiro Machado, Antonio Lopes

  176. Multidimensional Scaling Visualization Using Parametric Entropy

    Article • International Journal of Bifurcation and Chaos, December 2015, World Scientific Pub Co Pte Lt

    Antonio Lopes

  177. Visualizing control systems performance: A fractional perspective

    Article • Advances in Mechanical Engineering, December 2015, SAGE Publications

    Professor Jose Tenreiro Machado, Antonio Lopes

  178. Analysis and visualization of complex phenomena

    Article • November 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Jose Tenreiro Machado, Antonio Lopes

  179. Analysis of Terrorism Data-series by means of Power Law and Pseudo Phase Plane

    Article • The interdisciplinary journal of Discontinuity Nonlinearity and Complexity, November 2015, L&H Scientific Publishing, LLC

    Antonio Lopes

  180. Entropy Analysis of Industrial Accident Data Series

    Article • Journal of Computational and Nonlinear Dynamics, October 2015, ASME International

    Professor Jose Tenreiro Machado, Antonio Lopes

  181. Experiments with a Virtual Lab for Industrial Robots Programming

    Article • International Journal of Online Engineering (iJOE), September 2015, International Association of Online Engineering (IAOE)

    Antonio Lopes

  182. Fractional State Space Analysis of Economic Systems

    Article • Entropy, July 2015, MDPI AG

    Antonio Lopes

  183. Integer and fractional-order entropy analysis of earthquake data series

    Article • Nonlinear Dynamics, June 2015, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  184. Modeling vegetable fractals by means of fractional-order equations

    Article • Journal of Vibration and Control, April 2015, SAGE Publications

    Professor Jose Tenreiro Machado, Antonio Lopes

  185. Multidimensional Scaling Visualization Using Parametric Similarity Indices

    Article • Entropy, March 2015, MDPI AG

    Professor Jose Tenreiro Machado, Antonio Lopes

  186. Dynamical Analysis and Visualization of Tornadoes Time Series

    Article • PLoS ONE, March 2015, PLOS

    Professor Jose Tenreiro Machado, Antonio Lopes

  187. A review on the characterization of signals and systems by power law distributions

    Article • Signal Processing, February 2015, Elsevier

    Professor Carla M. A. Pinto, Professor Jose Tenreiro Machado, Antonio Lopes

  188. Temporal Patterns in Earthquake Data-series

    Article • January 2015, De Gruyter

    Professor Jose Tenreiro Machado, Antonio Lopes

  189. State space analysis of forest fires

    Article • Journal of Vibration and Control, January 2015, SAGE Publications

    Professor Jose Tenreiro Machado, Antonio Lopes

  190. Analysis of Natural and Artificial Phenomena Using Signal Processing and Fractional Calculus

    Article • Fractional Calculus and Applied Analysis, January 2015, De Gruyter

    Professor Jose Tenreiro Machado, Antonio Lopes

  191. Fractional State Space Analysis of Temperature Time Series

    Article • Fractional Calculus and Applied Analysis, January 2015, De Gruyter

    Professor Jose Tenreiro Machado, Antonio Lopes

  192. Power Law Behavior and Self-Similarity in Modern Industrial Accidents

    Article • International Journal of Bifurcation and Chaos, January 2015, World Scientific Pub Co Pte Lt

    Professor Jose Tenreiro Machado, Antonio Lopes

  193. Experimental results with a variable geometry ejector using R600a as working fluid

    Article • International Journal of Refrigeration, October 2014, Elsevier

    Antonio Lopes

  194. The Persistence of Memory

    Article • Nonlinear Dynamics, August 2014, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  195. Dynamic Analysis and Pattern Visualization of Forest Fires

    Article • PLoS ONE, August 2014, PLOS

    Professor Jose Tenreiro Machado, Antonio Lopes

  196. Double power laws, fractals and self-similarity

    Article • Applied Mathematical Modelling, August 2014, Elsevier

    Professor Carla M. A. Pinto, Professor Jose Tenreiro Machado, Antonio Lopes

  197. Analysis of temperature time-series: Embedding dynamics into the MDS method

    Article • Communications in Nonlinear Science and Numerical Simulation, April 2014, Elsevier

    Professor Jose Tenreiro Machado, Antonio Lopes

  198. Virtual experiment for teaching robot programming

    Article • February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  199. Rhapsody in fractional

    Article • Fractional Calculus and Applied Analysis, January 2014, De Gruyter Open Sp. z o.o.

    Prof. Manuel D Ortigueira, Professor Jose Tenreiro Machado, Antonio Lopes

  200. Analysis of Forest Fires by means of Pseudo Phase Plane and Multidimensional Scaling Methods

    Article • Mathematical Problems in Engineering, January 2014, Hindawi Publishing Corporation

    Professor Jose Tenreiro Machado, Antonio Lopes

  201. Casualties Distribution in Human and Natural Hazards

    Article • January 2014, Springer Science + Business Media

    Antonio Lopes, Professor Carla M. A. Pinto

  202. Haptic System for Determining the Young Modulus of Materials

    Article • International Journal of Online Engineering (iJOE), December 2013, International Association of Online Engineering (IAOE)

    Antonio Lopes

  203. Effect of post-cure on the glass transition temperature and mechanical properties of epoxy adhesives

    Article • Journal of Adhesion Science and Technology, December 2013, Taylor & Francis

    Antonio Lopes

  204. Multidimensional scaling visualization of earthquake phenomena

    Article • Journal of Seismology, November 2013, Springer Science + Business Media

    Professor Carla M. A. Pinto, Professor Jose Tenreiro Machado, Antonio Lopes

  205. Effect of Cure Temperature on the Glass Transition Temperature and Mechanical Properties of Epoxy Adhesives

    Article • The Journal of Adhesion, October 2013, Taylor & Francis

    Antonio Lopes

  206. Analysis and Visualization of Seismic Data Using Mutual Information

    Article • Entropy, September 2013, MDPI AG

    Antonio Lopes

  207. Dynamic analysis of earthquake phenomena by means of pseudo phase plane

    Article • Nonlinear Dynamics, September 2013, Springer Science + Business Media

    Professor Jose Tenreiro Machado, Antonio Lopes

  208. Fractional dynamics and MDS visualization of earthquake phenomena

    Article • Computers & Mathematics with Applications, September 2013, Elsevier

    Professor Carla M. A. Pinto, Professor Jose Tenreiro Machado, Antonio Lopes

  209. Hapticbender system study of young modulus

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  210. Robotics virtual lab based on off-line robot programming software

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  211. Fractional order models of leaves

    Article • Journal of Vibration and Control, April 2013, SAGE Publications

    Professor Jose Tenreiro Machado, Antonio Lopes

  212. A review of virtual reality and haptics for product assembly: from rigid parts to soft cables

    Article • Assembly Automation, April 2013, Emerald

    Antonio Lopes

  213. A review of virtual reality and haptics for product assembly (part 1): rigid parts

    Article • Assembly Automation, February 2013, Emerald

    Antonio Lopes

  214. Power Law and Entropy Analysis of Catastrophic Phenomena

    Article • Mathematical Problems in Engineering, January 2013, Hindawi Publishing Corporation

    Professor Carla M. A. Pinto, Professor Jose Tenreiro Machado, Antonio Lopes

  215. Root Locus Practical Sketching Rules for Fractional-Order Systems

    Article • Abstract and Applied Analysis, January 2013, Hindawi Publishing Corporation

    Professor Jose Tenreiro Machado, Antonio Lopes

  216. Haptic Guidance in a Collaborative Robotic System

    Article • January 2013, Springer Science + Business Media

    Antonio Lopes

  217. Virtual reality and haptics for dental surgery: a personal review

    Article • The Visual Computer, September 2012, Springer Science + Business Media

    Antonio Lopes

  218. A review of power laws in real life phenomena

    Article • Communications in Nonlinear Science and Numerical Simulation, September 2012, Elsevier

    Professor Carla M. A. Pinto, Professor Jose Tenreiro Machado, Antonio Lopes

  219. Single-Objective Spreading Algorithm

    Article • August 2012, Springer Science + Business Media

    Antonio Lopes

  220. “Feeling” young modulus of materials

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  221. Virtual Reality and Haptics for Product Assembly

    Article • International Journal of Online Engineering (iJOE), January 2012, International Association of Online Engineering (IAOE)

    Antonio Lopes

  222. Dynamical behaviour of multi-particle large-scale systems

    Article • Nonlinear Dynamics, January 2012, Springer Science + Business Media

    Antonio Lopes

  223. Dynamical Analysis of the Global Warming

    Article • Mathematical Problems in Engineering, January 2012, Hindawi Publishing Corporation

    Antonio Lopes

  224. Cut and Suture Support on Volumetric Models in the CyberMed Framework

    Article • Procedia Technology, January 2012, Elsevier

    Antonio Lopes

  225. Design of a Parallel Robotic Manipulator Using Evolutionary Computing

    Article • International Journal of Advanced Robotic Systems, January 2012, SAGE Publications

    Antonio Lopes

  226. Design and implementation of a haptic‐based virtual assembly system

    Article • Assembly Automation, September 2011, Emerald

    Antonio Lopes

  227. Efficient Dynamic Modeling of a Hexa-Type Parallel Manipulator

    Article • September 2011, Springer Science + Business Media

    Antonio Lopes

  228. Comparison of packet loss compensation in nonlinear Networked Control Systems using the methods Extended Kalman Filter and Unscented Kalman Filter

    Article • September 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  229. A new type haptics-based virtual environment system for assembly training of complex products

    Article • The International Journal of Advanced Manufacturing Technology, May 2011, Springer Science + Business Media

    Antonio Lopes

  230. Adding tactile information to remote & virtual labs

    Article • April 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  231. Complete Dynamic Modeling of a Stewart Platform Using the Generalized Momentum Approach

    Article • January 2011, Springer Science + Business Media

    Antonio Lopes

  232. MaxiMin MOPSO Design of Parallel Robotic Manipulators

    Article • January 2011, Springer Science + Business Media

    Antonio Lopes

  233. Optimization of the Workpiece Location in a Machining Robotic Cell

    Article • International Journal of Advanced Robotic Systems, January 2011, SAGE Publications

    Antonio Lopes

  234. Maximin spreading algorithm

    Article • July 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Jose Tenreiro Machado, Antonio Lopes

  235. WIMAX/802.16 BROADBAND WIRELESS NETWORKS

    Article • April 2010, World Scientific Pub Co Pte Lt

    Antonio Lopes, Michel Barbeau

  236. A Remote Laboratory in Engineering Measurement

    Article • IEEE Transactions on Industrial Electronics, December 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes, Prof. Joaquim Mendes

  237. Fractional Order Sliding Mode Controller Design for Fractional Order Dynamic Systems

    Article • October 2009, Springer Science + Business Media

    Antonio Lopes

  238. Complete dynamic modelling of a moving base 6-dof parallel manipulator

    Article • Robotica, September 2009, Cambridge University Press

    Antonio Lopes

  239. Dynamic modeling of a Stewart platform using the generalized momentum approach

    Article • Communications in Nonlinear Science and Numerical Simulation, August 2009, Elsevier

    Antonio Lopes

  240. The generalized momentum approach to the dynamic modeling of a 6-dof parallel manipulator

    Article • Multibody System Dynamics, October 2008, Springer Science + Business Media

    Antonio Lopes

  241. A force–impedance controlled industrial robot using an active robotic auxiliary device

    Article • Robotics and Computer-Integrated Manufacturing, June 2008, Elsevier

    Antonio Lopes

  242. Acceleration‐based force‐impedance control of a six‐dof parallel manipulator

    Article • Industrial Robot the international journal of robotics research and application, August 2007, Emerald

    Antonio Lopes

  243. Acceleration Based Force-Impedance Control of a 6-dof Parallel Robotic Manipulator

    Article • August 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes

  244. Modelling and simulation of artificial locomotion systems

    Article • Robotica, August 2005, Cambridge University Press

    Professor Manuel F Silva, Professor Jose Tenreiro Machado, Antonio Lopes

  245. Integer vs. Fractional Order Control of a Hexapod Robot

    Article • January 2005, Springer Science + Business Media

    Professor Manuel F Silva, Professor Jose Tenreiro Machado, Antonio Lopes

  246. Fractional Order Control of a Hexapod Robot

    Article • Nonlinear Dynamics, December 2004, Springer Science + Business Media

    Professor Manuel F Silva, Professor Jose Tenreiro Machado, Antonio Lopes

  247. Comparison of Fractional and Integer Order Control of an Hexapod Robot

    Article • January 2003, ASME International

    Professor Manuel F Silva, Antonio Lopes

  248. POWER ANALYSIS OF MULTI-LEGGED SYSTEMS

    Article • IFAC Proceedings Volumes, January 2002, Elsevier

    Antonio Lopes, Professor Manuel F Silva

  249. Infrared thermography based pipeline leak detection

    Article • NDT & E International, December 1996, Elsevier

    Antonio Lopes

  250. Gait selection for quadruped and hexapod walking systems

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Manuel F Silva, Professor Jose Tenreiro Machado, Antonio Lopes

  251. Performance analysis of multi-legged systems

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Manuel F Silva, Antonio Lopes

  252. Optimal Location of the Workpiece in a PKM-based Machining Robotic Cell

    Article • IGI Global

    Antonio Lopes

  253. Optimal Location of the Workpiece in a PKM-Based Machining Robotic Cell

    Article • IGI Global

    Antonio Lopes

  254. Performance analysis of multi-legged systems

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Antonio Lopes, Professor Manuel F Silva