Article
Computer Science, Interdisciplinary Applications
D. C. Barnes
Summary: A new approach to Darwin particle-in-cell plasma simulation is presented in this paper. By utilizing a finite-element approach, the exact solenoidal vector potential is achieved, enabling the representation of the multi-species particles as an action-at-a-distance Hamiltonian system. Applying recently-developed explicit symplectic methods results in a time-explicit algorithm with desired properties. Efficient inversion of the elliptic systems for the electrostatic and magneto-static parts is accomplished using an algebraic multi-grid algorithm. The algorithm is implemented in a two-dimensional Cartesian-geometry code and tested on Weibel instability and Alfven wave dynamics, demonstrating its effectiveness. Possible extensions to arbitrary meshes and a partially time-implicit scheme are briefly discussed.
JOURNAL OF COMPUTATIONAL PHYSICS
(2022)
Article
Psychology, Multidisciplinary
M. Clara de Paula Couto, Tingting Huang, Klaus Rothermund
Summary: This study examined explicit and implicit endorsement of prescriptive age stereotypes and found strong age-specificity in the endorsement. Younger and older participants showed differences in endorsing prescriptive age stereotypes, and explicit and implicit endorsement did not correlate with each other.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Orthopedics
Li-Juan Jie, Melanie Kleynen, Kenneth Meijer, Anna Beurskens, Susy Braun
Summary: This study compared the effects of implicit and explicit motor learning on walking speed in people after stroke in the chronic phase of recovery, finding no significant differences between the two approaches. Physical therapists can use tailored implicit and explicit motor learning strategies to improve walking speed in this patient population.
Article
Psychology, Social
Mariah F. Purol, Jeewon Oh, Meghan C. Abrom, Hana Bernard, Anna Forest, Seija D. Huhtala, Hyonjoon Kim, Haoyan Lin, Caitlin M. Meredith, Corrin S. Misak, Alex Mison, Kelsey Mongoven, Maddy Nomer, Ayushi Patel, Jamie L. Quaglia, Jada N. Ross, Naila Saric, Ivy Shi, Jessica R. Skaff, Kayla Stevenson, Antoinette Wingo, Sophia Wood, Hannah G. Yestrepsky, William J. Chopik
Summary: Past research suggests that personality differs with age, with older adults being more conscientious, agreeable, and less neurotic than younger adults. This study found that implicit and explicit measures of personality yielded consistent age patterns, indicating that changing motivations over time might not significantly affect the validity of personality measures.
PERSONALITY AND INDIVIDUAL DIFFERENCES
(2022)
Article
Automation & Control Systems
Jose Eduardo Carvajal-Rubio, Juan Diego Sanchez-Torres, Michael Defoort, Mohamed Djemai, Alexander G. Loukianov
Summary: This article introduces explicit and implicit methods for discrete-time realizations based on homogeneous sliding mode, both of which exhibit homogeneity and maintain accuracy within a finite time frame. The implicit method finds solutions by solving generalized equations involving support variables and the current state of the system, using the unique positive root of a polynomial to define the required solution. Numerical studies show that the implicit method outperforms the explicit one, aligning with the time discretization results of other continuous-time algorithms.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Neurosciences
Julia Moser, Laura Batterink, Yiwen Li Hegner, Franziska Schleger, Christoph Braun, Ken A. Paller, Hubert Preissl
Summary: Humans are highly sensitive to patterns in the environment and use statistical learning for cognition. This study examined the neural mechanisms of statistical learning using an auditory nonlinguistic paradigm. Neural entrainment reflects implicit learning of patterns, while the emergence of explicit knowledge varies across individuals depending on factors such as attention and exposure time.
Article
Computer Science, Artificial Intelligence
Mohammed Fadhel Aljunid, Manjaiah Doddaghatta Huchaiah
Summary: Due to the expansion of e-business, the availability of products on the internet has increased. Collaborative Filtering (CF) is the most effective recommendation method, but it faces data sparsity and cold start problems. This study proposes a new neural recommendation model based on non-iid (Non-Independent and Identically Distributed) for CF, incorporating explicit and implicit coupling interactions, and performs better than existing methods according to experiments on large real-world datasets.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Article
Psychology, Social
Krishna Savani, Michael W. Morris, Katrina Fincher, Jackson G. Lu, Scott Barry Kaufman
Summary: Newcomers' acculturation rate depends on both their explicit and implicit aptitude, with the latter playing a crucial role in learning interpersonal norms through trial-and-error experience.
JOURNAL OF PERSONALITY AND SOCIAL PSYCHOLOGY
(2022)
Article
Engineering, Multidisciplinary
Delfim Soares Jr
Summary: This paper proposes a novel hybrid explicit/implicit time marching procedure for wave propagation analyses. The method considers local self-adjustable time integration parameters and establishes explicit/implicit subdomains at an element level, incorporating automated computations and extending stability limits.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Delfim Soares Jr
Summary: This paper proposes a new explicit-implicit time-marching formulation that adapts to the properties of the model and its computed responses. The formulation includes three time-integration parameters that are locally and adaptively computed for each element, enabling enhanced numerically dissipative and non-dissipative analyses. These parameters also determine the explicit and implicit subdomains of the model, providing an easy-to-implement and apply solution approach. Numerical results demonstrate the excellent performance and effectiveness of this new technique, combining the best features of explicit and implicit formulations.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Psychology, Social
Pieter Van Dessel, Kate Ratliff, Skylar M. Brannon, Bertram Gawronski, Jan De Houwer
Summary: Research suggests that people may perceive a relationship between stimuli even when no such relationship exists, leading to illusory correlation effects which play a role in forming stereotypes and evaluations of minority groups. Different theories exist regarding the attribution of illusory correlation effects, with results supporting the theory that such effects are attributed to processes during belief expression rather than belief formation.
PERSONALITY AND SOCIAL PSYCHOLOGY BULLETIN
(2021)
Article
Mathematics
Eric T. Chung, Yalchin Efendiev, Wing Tat Leung, Wenyuan Li
Summary: This work extends previous research on developing partially explicit methods for linear multiscale problems to nonlinear problems, proposing a splitting approach and deriving a stability condition that requires contrast-independent spaces for slow components of the solution. Numerical results show that the proposed methods provide results similar to implicit methods with a time step independent of the contrast.
Article
Mathematics, Applied
Yanyan Du, Qimin Zhang, Anke Meyer-Baese
Summary: The paper examines the numerical solution and convergence of stochastic age-dependent capital system, introduces a penalty factor to maintain positivity, and validates the theoretical results through an example.
APPLIED NUMERICAL MATHEMATICS
(2021)
Article
Mathematics
Boris Chetverushkin, Yalchin Efendiev, Wing Tat Leung
Summary: This paper investigates the design and stability of contrast-independent partially explicit time discretizations for Quasi-Gas-Dynamics (QGD) Equations in multiscale high-contrast media. The proposed method achieves results similar to implicit methods while the time step remains independent of the contrast.
Article
Psychology, Multidisciplinary
Jeanine Lee McHugh Skorinko, Craig DiGiovanni, Katherine Rondina, Amy Tavares, Jennifer Spinney, Mariam Kobeissi, Luisa Perez Lacera, Daniel Vega, Paul Beatty, Melissa-Sue John, Aidan Doyle
Summary: The current research examines the influence of perspective taking on social tuning, focusing on the alignment of one's self-views and explicit attitudes with those of an interaction partner. Six different experiments were conducted, manipulating perspective taking mindset and providing information about the partner's views. The results showed that perspective takers were more likely to align their self-views and explicit attitudes with the partner's attitudes, but social tuning did not occur for implicit attitudes.
FRONTIERS IN PSYCHOLOGY
(2023)
Article
Neurosciences
Faezeh Mohammadi Sanjani, Abbas Bahram, Moslem Bahmani, Mina Arvin, John van der Kamp
Summary: Texting negatively affects driving performance, but balance training can offset this effect, especially in older adults. Texting increases perceived workload while driving, but balance training reduces it. Driving performance and perceived workload are indirectly associated with changes in postural stability.
Editorial Material
Sport Sciences
Elmar Kal, Toby Ellmers, Jed Diekfuss, Marinus Winters, John van der Kamp
BRITISH JOURNAL OF SPORTS MEDICINE
(2022)
Article
Sport Sciences
Kai Krabben, David Mann, Maria Lojanica, Daniel Mueller, Nadia Dominici, John van der Kamp, Geert Savelsbergh
Summary: This study used eye tracking and motion capture systems to find that judokas predominantly fixate on their opponent's chest during combat sports, requiring at least a 30-40 degree radius visual field to simultaneously monitor both hands of the opponent most of the time. These findings have important implications for visually impaired Paralympic judo athletes.
JOURNAL OF SPORTS SCIENCES
(2022)
Article
Hospitality, Leisure, Sport & Tourism
Ran Zheng, John van der Kamp, Xinyong Song, Geert Savelsbergh
Summary: While research has shown that the resultant constraint is more stringent for female goalkeepers, both male and female goalkeepers adapted to this constraint, albeit with differences in diving action.
PSYCHOLOGY OF SPORT AND EXERCISE
(2022)
Article
Neurosciences
Raimey Olthuis, John van der Kamp, Koen Lemmink, Simone Caljouw
Summary: This study explores the interaction between verbal and visual constraints during movement execution and finds that verbalization during movement can bias late movement control. The results show that action endpoints tend to align with the direction of the spoken word, indicating the temporal unfolding of visual and verbal constraints during the swiping action.
EXPERIMENTAL BRAIN RESEARCH
(2022)
Article
Psychology, Developmental
Biko Blommenstein, John van der Kamp
Summary: The study found that children who learn to ride a bike using a balance bike start practicing at a younger age, have shorter practice duration, and are able to independently ride a bike at a younger age compared to children who learn with a bike with training wheels. The advantage of the balance bike may be associated with its active challenge to postural control. Further research is needed to explore the impact of training bicycles on the further development of cycling skills.
BRITISH JOURNAL OF DEVELOPMENTAL PSYCHOLOGY
(2022)
Article
Psychology, Experimental
Ivonne H. F. Duiser, Annick Ledebt, John van der Kamp, Geert J. P. Savelsbergh
Summary: The increased use of computers at primary school may negatively impact handwriting ability. However, classroom-based handwriting, touch typewriting, or alphabet tuition did not significantly improve letter recognition and discrimination in novice primary school children.
JOURNAL OF COGNITIVE PSYCHOLOGY
(2022)
Article
Neurosciences
Ivonne H. F. Duiser, Annick Ledebt, John van der Kamp, Geert J. P. Savelsbergh
Summary: This study examined the effects of support lines (number and separation) on handwriting characteristics of primary school students. The results showed that support lines can reduce the size of handwriting, but they also adversely affect velocity and smoothness. Children with unsatisfactory handwriting wrote larger and had more lifts during the baseline condition.
Article
Psychology, Multidisciplinary
Stephan Zahno, John van der Kamp
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Neurosciences
Marjan Kok, Jennifer Nuij, Elmar Kal, John van der Kamp
Summary: This study examined the effects of explicit and implicit learning methods on motor learning and self-efficacy in basketball layup among 11 to 14-year old students. The results showed that both explicit and implicit learning methods similarly improved movement skill, and verbal working memory capacity and propensity for conscious processing did not predict the learning outcomes.
HUMAN MOVEMENT SCIENCE
(2022)
Article
Education & Educational Research
Johanna E. A. Brocken, John van der Kamp, Rene Wormhoudt, Matthieu L. Lenoir, Geert J. P. Savelsbergh
Summary: The purpose of this study is to measure the concurrent validity of the Athletic Skills Track (AST) by examining its correlation with the holistic judgments of experts about movement quality. The results show that the holistic ratings of movement quality by teachers are significantly correlated with AST time, indicating that higher ratings are associated with shorter completion time. In addition to holistic ratings, age also explains part of the variance in AST time, while gender does not. This study suggests that the AST has good concurrent validity and can provide a fast, indirect indication of movement quality.
JOURNAL OF TEACHING IN PHYSICAL EDUCATION
(2022)
Article
Psychology, Experimental
Yihong You, Alberto Failla, John van der Kamp
Summary: The aim of this study was to determine if top-down controlled response inhibition on a stop-signal task can be trained. Previous studies had conflicting results, possibly due to consistent signal-response combinations during training and testing. The experimental group received training with varying signal-response combinations, while the control group received training on a different task. Results showed no decrease in stop-signal reaction time during and after training, with substantial evidence for the null hypothesis. However, the experimental group did show improvements in go reaction times and stop signal delays after training. These findings suggest that top-down controlled response inhibition may be difficult to improve.
Review
Neurosciences
Ran Zheng, John van der Kamp, Matt Miller-Dicks, Jose Navia, Geert Savelsbergh
Summary: In penalty situations, penalty takers can benefit from using deceptive actions to increase the likelihood of scoring a goal, but the effectiveness of such actions is lower in real-life situations compared to video-based experiments.
HUMAN MOVEMENT SCIENCE
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Tom de Joode, John van der Kamp, Geert J. P. Savelsbergh
Summary: In adult football, small-sided games promote increased action variability and more creative actions compared to regular 11v11 formats. A study was conducted to examine if this observation holds true for elite youth football players. The results showed that the small-sided game format led to a significantly higher number of different and creative actions compared to the regular-sided game format.
PSYCHOLOGY OF SPORT AND EXERCISE
(2023)
Article
Sport Sciences
Carola Minkels, John van der Kamp, Peter J. Beek
Summary: This study examined the extent to which swimming instructors in the Netherlands cater to the basic needs of autonomy, competence, and relatedness, and whether an SDT-based teaching program prompts instructors to meet these needs. The study also explored the predictors of SDT employment in swimming lessons, including the teaching program, education and experience of the instructor, and group size.
FRONTIERS IN SPORTS AND ACTIVE LIVING
(2023)