Article
Mechanics
Ziyun Kan, Jinwei Wu, Kaijun Dong, Fei Li, Haijun Peng
Summary: This paper proposes a multi-node sliding catenary cable element to accurately analyze cable systems with long-span and large sag effects. The effective numerical strategies and formulation development are presented, and the validity of the proposed framework is demonstrated through multiple examples. The numerical results highlight the significant influence of sliding effects on the mechanical behavior of catenary cable systems, which can be easily addressed using the methodology developed in this work.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Physics, Multidisciplinary
Muhammad Usman, Muhammad Hamid, Zafar Hayat Khan, Rizwan Ul Haq
Summary: The study introduces a novel approach using Gegenbauer wavelets to solve fractional cable equations, demonstrating accuracy and efficiency through convergence and error bound analysis.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Acoustics
Javaid Ahmad
Summary: The use of a cross-tie is effective in suppressing undesired stay cable vibrations, but the mechanics behind it are not fully understood. Studying the in-plane modal behavior of a cable network with sagged cables can provide insights into the dynamic behavior of long span bridges.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Computer Science, Artificial Intelligence
Saber Omidi, Yazadan Batmani, Sirwan Farhadi
Summary: This paper proposes a nonlinear suboptimal controller for cable-suspended planar parallel robots to track time-varying desired trajectories. The controller is designed by formulating a reference model, using pseudo-linearization technique, and solving a state-dependent Riccati equation. Both simulation and experimental results demonstrate the effectiveness of the proposed controller.
JOURNAL OF INTELLIGENT & ROBOTIC SYSTEMS
(2023)
Article
Mathematics, Applied
Zihan Yue, Wei Jiang, Zhuoyue Liu, Biao Zhang
Summary: In this paper, a meshless method is proposed to solve the two-dimensional distributed-order time-fractional cable equation. The method utilizes Gauss kernel-based basis functions as shape functions. The minimum residual approximate solution is then introduced to obtain an approximate solution, along with error estimation for well-posed equations. Finally, two numerical examples are provided to verify the accuracy of the proposed method.
APPLIED MATHEMATICS LETTERS
(2023)
Review
Neurosciences
Sandip Chatterjee
Summary: Ventriculosubgaleal shunts are used for treating hydrocephalus in low-birth-weight neonates, while ventriculocholecystal shunts are a last resort when all else fails.
Article
Environmental Sciences
Marina Povitkina, Sverker Carlsson Jagers
Summary: Since the 1960s, scholars have had mixed opinions about the relationship between democracy and environmental protection. This paper empirically examines the impact of different types of democracy on environmental commitments using recent data from the Varieties of Democracy project. The findings suggest that democracies with stronger social-liberal features tend to have stricter and more effective environmental policies.
GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS
(2022)
Article
Engineering, Marine
Yukitoshi Ogasawara, Wataru Natsu
Summary: This study examines the mechanism of cable damage related to laying repeaters in long-distance submarine cable systems and explores cost-effective methods to mitigate cable faults.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Mechanics
Anil Kumar Sharma, Sasanka Sekhar Sinha, Rajesh Kumar, Subir Kumar Saha
Summary: The paper presents a semi-analytical solution for static equilibrium analysis, demonstrating the limitations of numerical methods in such scenarios. It also provides guidelines on choosing initial guesses to accelerate solution convergence.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Engineering, Electrical & Electronic
J. Ogawa, S. Fukui, R. Iida, T. Obana
Summary: Based on previous studies, the AC loss characteristics of each layer in a high-temperature superconducting cable were experimentally investigated. A model was developed to estimate the AC loss by considering the maximum and minimum values of the loss, showing good agreement with experimental data. This model allows for estimating AC losses and designing the minimum AC loss load for a superconducting cable, specifically a three-layer twisted HTS cable.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Multidisciplinary
Ali Habibirad, Esmail Hesameddini, Hadis Azin, Mohammad Hossein Heydari
Summary: Distributed-order fractional calculus is a rapidly growing field within the broader area of fractional calculus, with significant applications in designing complex systems. This study utilizes the direct meshless local Petrov-Galerkin (DMLPG) technique to numerically solve the distributed-order time fractional Cable equation. The DMLPG method discretizes the equation in space variables using a generalized moving least square (GMLS) process, allowing for a more cost-effective integration compared to polynomial methods. The stability and convergence rate of the time-discrete technique are also demonstrated, and the problem is transformed into a system of linear algebraic equations.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Chemistry, Multidisciplinary
Anastasiia Sharko, Benjamin Spitzbarth, Thomas M. Hermans, Rienk Eelkema
Summary: This article introduces shunts in chemical reaction networks (CRNs), which are widely distributed in nature, allowing adaptability to both external and internal stimuli. By using weak oxidants, access to two shunts with different kinetics and fewer side reactions compared to the main cycle driven by strong oxidants can be achieved in this CRN. Additionally, a strategy is proposed to recycle one of the main products under flow conditions to partially reverse the CRN and control product speciation over time. These findings provide new levels of control in artificial CRNs driven by redox chemistry, bridging the gap between synthetic and natural systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Acoustics
Javaid Ahmad
Summary: The study discusses the effectiveness of cross-ties in suppressing cable vibrations in cable-stayed bridges and the issue of local modes. An energy-based approach is proposed to differentiate between different modes of cables and its advantages are discussed.
JOURNAL OF VIBRATION AND CONTROL
(2022)
Article
Engineering, Civil
Jiamin Guo, Yu Zhao, Sujith Mangalathu, Guangzhong Liu, Guangen Zhou, Weigang Chen
Summary: The study proposes a control equation and solving algorithm for feasible pre-stresses and verifies three new types of rotating surface cable domes. It develops cable domes with different rotating surfaces and verifies their feasibility through determining feasible pre-stresses using the algorithm. The results show that the proposed cable domes are feasible in nature and have sufficient stiffness to bear external loads, extending the traditional positive Gaussian curvature to zero and negative Gaussian curvature.
ENGINEERING STRUCTURES
(2021)
Article
Physics, Multidisciplinary
Umair Ali, Muhammad Naeem, Abdul Hamid Ganie, Dowlath Fathima, Fouad Mohammad Salama, Farah Aini Abdullah
Summary: This study investigates the fractional order cable model (FCM) using the Riemann-Liouville fractional derivatives (R-LFD). A modified implicit finite difference approximation is employed to numerically solve the FCM. The theoretical analysis of the proposed scheme, including stability and convergence, is conducted using the Fourier series approach. The results show that the scheme is unconditionally stable and the approximate solution converges to the exact solution. A numerical example is provided to demonstrate the application and feasibility of the proposed approach.
FRONTIERS IN PHYSICS
(2023)
Article
Mathematical & Computational Biology
Aine Byrne, Matthew J. Brookes, Stephen Coombes
JOURNAL OF COMPUTATIONAL NEUROSCIENCE
(2017)
Article
Mathematics, Applied
S. Visser, R. Nicks, O. Faugeras, S. Coombes
PHYSICA D-NONLINEAR PHENOMENA
(2017)
Article
Cell Biology
Emma McIvor, Stephen Coombes, Rudiger Thul
Article
Mathematics, Applied
S. Coombes, Y. M. Lai, M. Sayli, R. Thul
EUROPEAN JOURNAL OF APPLIED MATHEMATICS
(2018)
Article
Multidisciplinary Sciences
Simon Chamberland, Yulia Timofeeva, Alesya Evstratova, Kirill Volynski, Katalin Toth
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
Article
Physics, Multidisciplinary
Yi Ming Lai, Rudiger Thul, Stephen Coombes
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2018)
Article
Neurosciences
Prejaas Tewarie, Romesh Abeysuriya, Aine Byrne, George C. O'Neill, Stamatios N. Sotiropoulos, Matthew J. Brookes, Stephen Coombes
Review
Neurosciences
Aine Byrne, Reuben D. O'Dea, Michael Forrester, James Ross, Stephen Coombes
JOURNAL OF NEUROPHYSIOLOGY
(2020)
Article
Mathematics, Applied
Yi Ming Lai, Stephen Coombes, Ruediger Thul
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2020)
Article
Mathematics, Applied
Mustafa Sayli, Anne C. Skeldon, Rudiger Thul, Rachel Nicks, Stephen Coombes
Summary: The two-process model introduced by Borbely has been used to explain sleep-wake regulation in various species, including humans, for the past four decades. This model represents circadian and homeostatic processes with a one-dimensional nonautonomous and nonsmooth flow, where the rate of change of homeostatic sleep pressure switches at specific times. By analyzing the underlying nonsmooth flow, this study provides an equivalent description and a more detailed understanding of the model's periodic orbits and instabilities. The authors also propose using techniques from nonsmooth dynamical systems to study networks of the two-process model, considering the continuous interactions throughout the day-night cycle.
PHYSICA D-NONLINEAR PHENOMENA
(2023)
Article
Physics, Multidisciplinary
Aytul Gokce, Stephen Coombes, Daniele Avitabile
PHYSICAL REVIEW RESEARCH
(2020)
Article
Neurosciences
Michael Forrester, Jonathan J. Crofts, Stamatios N. Sotiropoulos, Stephen Coombes, Reuben D. O'Dea
NETWORK NEUROSCIENCE
(2020)
Article
Physics, Fluids & Plasmas
James Ross, Michelle Margetts, Ingo Bojak, Rachel Nicks, Daniele Avitabile, Stephen Coombes
Article
Physics, Fluids & Plasmas
Aine Byrne, Daniele Avitabile, Stephen Coombes
Article
Physics, Fluids & Plasmas
Rachel Nicks, Lucie Chambon, Stephen Coombes