Article
Chemistry, Multidisciplinary
Manuel Vicente Garnacho-Castano, Juan Hernandez-Lougedo, Pablo Garcia-Fernandez, Jose Luis Mate-Munoz
Summary: The study found that performing eccentric-concentric muscle actions in bench press and military press exercises can enhance athletes' acceleration, rate of force development, and power output. In bench press exercise, the eccentric muscle action prior to concentric movement was found to be a key factor in enhancing kinematic and kinetic performance.
APPLIED SCIENCES-BASEL
(2021)
Article
Automation & Control Systems
Alain Ajami, Jean-Paul Gauthier, Ludovic Sacchelli
Summary: The issue of dynamic output stabilization is a common and crucial problem in control theory, especially for nonlinear systems with varying observability properties over time. This paper successfully addresses the problem for a specific kinematic model used for drones, which has particularly poor observability properties.
Article
Environmental Sciences
Qingsong Li, Yi Dong, Dingjie Wang, Jie Wu, Liang Zhang
Summary: The article introduces a high-output-rate relative positioning method based on real-time differential global navigation satellite systems (DGNSS) and inertial navigation systems (TC-GNSS/INS) integration algorithms, and investigates the effect of data broadcast rates and sampling rates on the integrated relative positioning accuracy. Experimental results show that the proposed method can provide centimeter-level-accuracy relative positions at a high output rate, even with a low bit rate.
Article
Automation & Control Systems
Amanda Spagolla, Alvaro A. Lemaire, Cecilia F. Morais, Ricardo C. L. F. Oliveira, Pedro L. D. Peres
Summary: This paper addresses the problems of H-2 and H-∞ control design for positive continuous-time linear systems with uncertain parameters. It proposes a method based on linear matrix inequalities to obtain stabilizing gain and H-2 (or H-∞) guaranteed cost. The method allows for independent optimization of the gain and the Lyapunov matrix, and does not require a diagonal structure on the matrix used to enforce closed-loop positivity.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Article
Nanoscience & Nanotechnology
Senlin Tang, Jiawei Zong, Zheng Zhu, Zhizhi Wang, Wenjing Pan, Lian Zhao, Runfeng Chen, Mingguang Li
Summary: A highly efficient phase-transition pathway using a PDMS-based facial mask incubation technique is developed to reduce the crystallization rate and aggregation behavior of perovskite, resulting in the formation of phase-pure perovskite films. The perovskite films produced through this technique exhibited a smooth surface, decreased defect states, and alleviated lattice strain, leading to high-performance perovskite solar cells with respectable efficiency and superior stability in storage and light soaking conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Automation & Control Systems
Shengxiong Wen, Yaowu Ding, Xuan Wu, Kun Bai
Summary: This article introduces a spherical-motor-based visual tracking system that provides 3 degrees of freedom in one joint, reducing unwanted inertia and friction. The article establishes a kinematic model for the omnidirectional visual tracking configuration and derives an image-based visual servo algorithm. It proposes a cascaded visual tracking controller to precisely control the spherical motor, and compares its performance to a conventional gimbal system in tracking flying targets. The results show that the proposed system avoids singularities and provides fast and precise visual tracking.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Sport Sciences
John F. T. Fernandes, Jorge Arede, Hannah Clarke, Amador Garcia-Ramos, Alejandro Perez-Castilla, Jonty P. Norris, Celeste A. Wilkins, Amelia F. Dingley
Summary: This study aimed to investigate the mechanical and kinetic differences between unloaded and band-assisted countermovement jumps (CMJs). Participants performed CMJs in three conditions: unloaded, low band, and moderate band. The results showed that band assistance altered force, time, and velocity variables during CMJs.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2023)
Article
Automation & Control Systems
Thomas Berger, Lukas Lanza
Summary: This paper considers the tracking control problem of linear minimum phase systems with known arbitrary relative degree, taking into account possible output measurement losses. A control law is proposed to guarantee the evolution of the tracking error within a prescribed performance range when the output signal is available. The paper explicitly derives the maximum duration of measurement losses and the minimum time of measurement availability, both of which strongly depend on the internal dynamics of the system. The effectiveness of the controller is demonstrated through a simulation of a mass-on-car system.
IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
(2023)
Article
Automation & Control Systems
Qun Lu, Jian Chen, Qianjin Wang, Dan Zhang, Mingxuan Sun, Chun-Yi Su
Summary: This paper addresses the problem of practical fixed-time trajectory tracking for wheeled mobile robots subject to kinematic disturbances and input saturation. A two-input two-output interference system is established to transform the WMR model under kinematic disturbances considering the under-actuated characteristics. The paper proposes a fixed-time extended state observer to estimate the lumped disturbances and develops a practical fixed-time output feedback control law for trajectory tracking. The effectiveness of the proposed approach is demonstrated through simulation results.
Article
Psychiatry
Jonathon R. Howlett, Heekyeong Park, Martin P. Paulus
Summary: Inhibitory control dysfunctions are important in psychiatric disorders but the precise nature of these dysfunctions is not well understood. Computational modeling using a PID control framework has identified preemptive and reactive components in motor inhibition. This study examined the relationship between inhibitory control processing and motor control in a transdiagnostic sample. The results suggest that computational indices of motor control performance may serve as markers of neural systems involved in inhibitory control.
TRANSLATIONAL PSYCHIATRY
(2023)
Article
Engineering, Electrical & Electronic
Xu Zhu, Tao Yang, Pei-Ling Chi, Ruimin Xu
Summary: This article proposes a novel reconfigurable filtering vector-sum phase shifter (RFPS) with a continuous phase shift range of >= 300 degrees and tunable operating frequency range from 1.05 to 1.3 GHz. It features a pure passive design, vector summing, low-cost, low-noise, easy-design, and high flexibility. Experiment results show the RFPS has a continuous phase-control range of more than 300 degrees with a tunable filtering response covering the frequency range from 1.05 to 1.3 GHz.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2022)
Article
Automation & Control Systems
Eli Gershon, Uri Shaked
Summary: This article introduces a descriptor method for designing static output-feedback controllers for linear, continuous-time, retarded, stochastic systems with a prescribed H-infinity performance. A design solution is obtained for the uncertain case, where the parameters of the system matrices reside in a given polytope. The theory is also extended to the gain-scheduling case and demonstrated through two examples.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2022)
Article
Biochemistry & Molecular Biology
Iris Adam, Alyssa Maxwell, Helen Rossler, Emil B. Hansen, Michiel Vellema, Jonathan Brewer, Coen P. H. Elemans
Summary: By studying the bird song system, this research reveals the size distribution of MUs in avian syringeal muscles and its control resolution on vocal output. The study shows that avian syringeal muscles have extremely small MUs, allowing for very fine control steps in vocalization.
Article
Engineering, Electrical & Electronic
Dhiman Das, Sukumar Mishra, Bhim Singh
Summary: This article introduces the operational characteristics and closed-loop control of the dual active bridge (DAB) designed in the analog domain, experimentally verifying the transfer function of control parameters and establishing a laboratory prototype for battery charging/discharging and microgrid applications.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Robert Jesionowski, Yuri Shtessel, Franck Plestan
Summary: This paper proposes a novel approach that combines relative degree (RD) methods with sliding mode control (SMC) to achieve stable control designs for both minimum phase and nonminimum phase systems. By introducing the concept and algorithm of Practical Generalized RD (PGRD), the internal dynamics of nonminimum phase systems are eliminated, and a bounded solution is generated to ensure system stability.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2023)
Article
Sport Sciences
Luca Paolo Ardigo, Antonio Buglione, Luca Russo, Drazen Cular, Fabio Esposito, Christian Doria, Johnny Padulo
Summary: The aim of this study was to compare the metabolic cost between marathon shoes and track spikes on a running track. The results showed that there was no significant difference in metabolic cost between the two shoe conditions at different speeds. However, there may be a potential benefit of using track spikes at higher speeds, although further research is needed to confirm this.
RESEARCH IN SPORTS MEDICINE
(2023)
Article
Gerontology
Ewertton de Souza Bezerra, Antonio Renato Pereira Moro, Raphael Luiz Sakugawa, Eduardo Lusa Cadore, Mikel Izquierdo, Juliano Dal Pupo
Summary: The present study aimed to investigate the effects of different types of exercise on muscle strength and functional performance in older adults after heavy resistance training. The results showed that both multi-joint and single-joint exercises produced similar improvements in maximal strength and functional performance.
AGEING INTERNATIONAL
(2023)
Article
Sport Sciences
Rafael L. Kons, Jonathan Ache-Dias, Rodrigo G. Gheller, Chris Bishop, Daniele Detanico
Summary: This study describes the bilateral deficit (BLD) during the countermovement jump (CMJ) in judo athletes and explores its relationship with judo-specific performance. The results show that BLD is present in all CMJ parameters and is negatively correlated with performance in the Special Judo Fitness Test (SJFT).
RESEARCH IN SPORTS MEDICINE
(2023)
Article
Sport Sciences
Johnny Padulo, Moshe Ayalon, Fabio A. Barbieri, Roberto Di Capua, Christian Doria, Luca P. Ardigo, Antonio Dello Iacono
Summary: This study investigated the effects of gradient and speed on running variability (RV) and local dynamic stability (LDS) during uphill running. The results showed that both gradient and speed increased heart rate and perceived exertion. Additionally, gradient increased running variability and impaired local dynamic stability.
SPORTS HEALTH-A MULTIDISCIPLINARY APPROACH
(2023)
Article
Neurosciences
Rodrigo Ghedini Gheller, Rafael Lima Kons, Juliano Dal Pupo, Daniele Detanico
Summary: The aim of this systematic review was to investigate the effect of specific sprint and vertical jump training interventions on the transfer of speed-power parameters. Both training interventions induced improvements in vertical jump and linear sprint performance as well as transfer of training to speed-power performance. However, vertical jump training had a greater transfer effect on linear sprint than sprint training.
Meeting Abstract
Physiology
Fabio Esposito, Nicholas Toninelli, Stefano Longo, Giuseppe Coratella, Susanna Rampichini, Eloisa Limonta, Marta Borrelli, Christian Doria, Johnny Padulo, Emiliano Ce
Article
Sport Sciences
R. G. Gheller, R. L. Kons, J. Dal Pupo, D. Detanico
Summary: This study aimed to determine if different SSC methods obtained through the vertical jump test present the same characteristics and to compare the SSC methods between athletes of different sports. The results showed strong correlations and excellent agreement between the methods for jump height and power output. Furthermore, team sports athletes had higher SSC utilization compared to combat sports athletes.
Article
Engineering, Mechanical
Rodrigo G. Gheller, Rafael L. Kons, Wladymir Kulkamp, Juliano Dal Pupo, Daniele Detanico
Summary: This study aimed to test the reliability and criterion validity of the Ergonauta encoder for assessing CMJ performance, specifically jump height and mean propulsive velocity. The results showed that the Ergonauta encoder is reliable and valid for evaluating CMJ performance, particularly in measuring jump height and mean propulsive velocity.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECHNOLOGY
(2023)
Article
Rehabilitation
Daniele Detanico, Rafael L. Kons
Summary: This study investigated the impact of age categories (U13, U15, and U18) on physical performance in young judo athletes. The results showed that U18 athletes had higher somatic maturity, training experience, and physical performance compared to U13 and U15 categories, with no differences between U13 and U15. Training experience, chronological age, and somatic variables were correlated with physical performance in all age categories.
JOURNAL OF BODYWORK AND MOVEMENT THERAPIES
(2023)
Review
Sport Sciences
Gian Mario Migliaccio, Luca Russo, Mike Maric, Johnny Padulo
Summary: Breathing is a natural and necessary process, with variations in pace and frequency depending on the individual's status. In sports, breathing can impact performance both physically and psychologically. This review aims to integrate the physiological and psychological aspects of breathing in sports performance to provide a comprehensive understanding.
Review
Engineering, Mechanical
Jader Sant' Ana, Rafael Lima Kons, Daniele Detanico, Fernando Diefenthaeler
Summary: New technologies, including mobile technology and wearables, have expanded the possibilities for real-time data acquisition and scientific analysis, providing practical solutions to challenges faced by coaches and athletes in combat sports. However, there is a lack of research on the application of new assessment and monitoring technologies in combat sports, highlighting the need for further scientific validation studies.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECHNOLOGY
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Rafael Lima Kons, Daniele Detanico, Filipe Estacio Costa, Emerson Franchini, Xurxo Dopico-Calvo, Jose Morales Aznar, Irineu Loturco, Anthony Weldon
Summary: This study investigated the practices and perspectives of judo coaches in strength and conditioning (S&C) across different countries. The results showed that all participants considered S&C to be very important in judo. Squats, weightlifting, judo-specific movements, and stretching/mobility exercises were identified as the most important exercises for different aspects of judo. The most frequently mentioned issues and desired improvements in S&C were motivation, increased staffing, expertise, and technology integration.
INTERNATIONAL JOURNAL OF SPORTS SCIENCE & COACHING
(2023)
Review
Sport Sciences
Rafael L. L. Kons, Lucas B. R. Orssatto, Jonathan Ache-Dias, Kevin De Pauw, Romain Meeusen, Gabriel S. Trajano, Juliano Dal Pupo, Daniele Detanico
Summary: This systematic umbrella review examined 29 meta-analyses on the effects of plyometric training. The findings suggest that plyometric training has positive effects on physical fitness and sports performance. However, caution is needed due to the lack of studies with control groups.
SPORTS MEDICINE-OPEN
(2023)
Article
Neurosciences
John J. Buchanan, Alberto Cordova
Summary: Research has shown that spontaneous visual coupling supports frequency entrainment, phase attraction, and intermittent interpersonal coordination during the switch from a novision (NV) to vision (V) context among co-actors. The experiments demonstrate that similar self-paced frequencies result from same amplitude movements, while different amplitudes lead to disparate frequencies. In experiment 1, co-actors were instructed to maintain amplitude without explicit instructions for coordination, which limited frequency and phase entrainment in the V context. In experiment 2, co-actors were instructed to maintain amplitude and intentionally coordinate together, resulting in significant frequency modulations and the production of various stable relative phase patterns.
HUMAN MOVEMENT SCIENCE
(2024)
