Article
Energy & Fuels
Ding Rui, Jin Hui
Summary: With the increase in energy shortage, researchers have paid attention to energy saving in automobiles. However, the lack of an accurate practical fuel consumption model makes it difficult to estimate transient fuel consumption and evaluate the effectiveness of real-time fuel consumption control strategies. Therefore, this study aims to establish a more accurate and practical model based on the transient motion characteristics of vehicles. By integrating a steady-state base module and a transient correction module, the overall structure of the model ensures its accuracy and practicality.
Article
Optics
Heli Ma, Shenggang Liu, Tianjiong Tao, Long Chen, Longhuang Tang, Chengjun Li, Jian Wu, Xing Jia, Xiang Wang, Jidong Weng
Summary: Distance measurement technology plays an important role in scientific research and engineering applications. The optical frequency-domain interferometry ranging method (OFDI-RM) has gained attention for its high accuracy down to the micron and nanometer level. However, the short measuring range of OFDI-RM limits its widespread use. In this paper, a high-performance OFDI-RM with a long distance range, high accuracy, and high resolution is proposed and validated through experiments.
Article
Mathematics
Yeling Yang, Feng Yi, Chuancheng Deng, Guang Sun
Summary: This paper analyzes the accuracy of the CHAID algorithm, introduces the reasons, applicable conditions, and application scope of the CHAID algorithm, and highlights the differences in branching principles between the CHAID algorithm and other common decision tree algorithms. Through a case study and comparison of vehicle customer satisfaction data, the results show that CHAID can analyze data well and reliably detect correlated factors. This paper provides the necessary information to understand the CHAID algorithm, enabling better choices for accurate results when using decision tree algorithms.
Article
Chemistry, Analytical
Leehter Yao, Lei Yao, Yeong-Wei Wu
Summary: The paper proposed a new mathematical model for indoor positioning, analyzing the positioning errors and influencing factors of the mobile node, and determining the best installation position for anchors. The mobile node's positioning errors were reduced based on the mathematical model, which was verified through computer simulations and practical experiments.
Article
Engineering, Electrical & Electronic
Haiquan Lu, Yong Zeng
Summary: This paper studies the mathematical modeling and performance analysis of wireless communications with extremely large-scale arrays (XL-array). By explicitly modeling the physical area/aperture of the array elements, a generic model is proposed that accurately takes into account the variations of signal phase, amplitude and projected aperture across the array elements. Closed-form expressions for the resulting signal-to-noise ratio (SNR) with optimal beamforming are derived, and a new distance criterion, uniform-power distance (UPD), is introduced. Extensive numerical results are provided to demonstrate the importance of proper modeling for XL-array communications.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Engineering, Multidisciplinary
M. F. Khalil, Ibrahim El-Boghdady, E. R. Lotfy
Summary: Oil spill recovery using a rotating drum skimmer covered with a sponge layer was investigated experimentally. The results showed that the sponge-covered surface outperformed the standard steel surface in oil recovery, regardless of the viscosity of the collected oil. The porous cover improved the skimmer's performance by absorbing oil. Increasing the oil slick thickness led to a higher recovery rate with the sponge-covered drum compared to the plain steel drum. This study suggests the potential use of different porous sorbent materials to enhance efficiency and oil recovery rate.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Kukhyun Ryou, Hyungjoon Chang, Hojin Lee
Summary: This study used laboratory tests to determine the deposition characteristics of debris flow and their relationships with flow characteristics. The results showed that the runout distance, lateral width, and deposition area of debris flow increased with channel slope and decreased sediment volumetric concentration. Berm installation also led to significant reductions in these deposition characteristics. The study contributes to designing site-specific berms in the future for mitigating debris flow.
Article
Mathematics, Interdisciplinary Applications
Mingyan Li, Tiantian Gao, Jianxue Wang, Huanyu Wang
Summary: This paper improves the method for corporate HRM performance analysis by establishing a new index system and introducing fuzzy extenics factors to create an integrated model. The validity and feasibility of the proposed model are demonstrated through case analysis, providing new insights for both HRMPA theory and engineering practice.
DISCRETE DYNAMICS IN NATURE AND SOCIETY
(2022)
Article
Chemistry, Analytical
Pengzhang Dai, Dong Yao, Tianxiang Ma, Honghai Shen, Weiguo Wang, Qingyu Wang
Summary: Three-dimensional reconstruction based on the polarization properties of diffuse light has high accuracy theoretically but is limited by the performance parameters of the polarization detector. This paper establishes mathematical models connecting the reconstruction errors with detector parameters such as polarizer extinction ratio, installation error, full well capacity, and analog-to-digital bit depth, and provides suitable detector parameters through simulation. The models provided are of great significance for improving the accuracy of polarization 3D reconstruction.
Article
Environmental Sciences
Changliang Xiong, Daoxin Liu, Lin Wu, Lifeng Bao, Panpan Zhang
Summary: This study explores the high-precision unification of global height datum and proposes chronometric leveling as a solution. The height difference between two locations is measured through frequency comparison of high-precision optical clocks, and an error model is established to evaluate the performance of height measurement. The findings have important guiding significance for the future unification of the global height datum and related geoscience fields using high-accuracy chronometric leveling.
Article
Environmental Sciences
Semih Kuter, Kenan Bolat, Zuhal Akyurek
Summary: Snow is a critical component of the cryosphere, affecting the Earth's water cycle and energy balance. Remote sensing plays a crucial role in acquiring consistent and long time series data on snow cover extent. This study focuses on developing an improved snow cover product using machine learning, which outperforms the existing product and displays higher capability in detecting fine variations in snow cover extent.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Physiology
Caio Victor Sousa, Samuel Aguiar, Rafael Reis Olher, Rafael Cunha, Pantelis Theodoros Nikolaidis, Elias Villiger, Thomas Rosemann, Beat Knechtle
Summary: The analysis found that the importance of each discipline in predicting overall performance varies across different triathlon distances. Swimming is the most important predictor in Sprint and Olympic distance, while running is the most important predictor in IM 140.6.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Engineering, Mechanical
Christian Adams, Joachim Boes, Tobias Melz
Summary: This paper introduces similitude analysis methods for vibration analysis of rectangular plates and a performance measure, the Mahalanobis distance, to evaluate the accuracy of scaling laws in approximating the actual vibration responses. The study validates that the Mahalanobis distance is effective in assessing the performance of similitude analyses. It is found that scaling laws can sufficiently approximate the vibration responses of rectangular plates up to a maximum permissible amount of geometrical distortion.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Computer Science, Artificial Intelligence
Stefan A. G. van der Stockt, Gary Pampara, Andries P. Engelbrecht, Christopher W. Cleghorn
Summary: A new performance measure for dynamic optimization problems (DOPs) called relative error distance is proposed in this paper. This measure can better consider the impact of fitness landscape changes on performance, does not require the assumption of normal distribution of data, and is more suitable for comparing algorithms.
SWARM AND EVOLUTIONARY COMPUTATION
(2021)
Article
Environmental Sciences
Zhiqiao Xiong, Jianjiang Liu, Fei Yan, Daqian Shi
Summary: This paper examines the impact of neighboring the Environmental Protection Agency (EPA) on corporate ESG performance and finds that being a neighbor to the EPA significantly inhibits corporate ESG performance. The study also reveals that rent-seeking behavior is an important reason for this inhibitory effect, and third-party supervision and digital supervision can help mitigate this negative impact.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Engineering, Biomedical
Javad Sarvestan, Zdenek Svoboda, Jean-Pierre Baeyens, Ben Serrien
Summary: The performance of volleyball spikes in elite players can be influenced by task and environment-related constraints. This study examined the impact of awareness of the presence or absence of a defensive block by opponents on the performance and coordination pattern of spikes in elite volleyball attackers. The findings showed that providing attackers with information about opponents' condition or performance shifted their focus and consequently led to a deterioration in spike performance.
SPORTS BIOMECHANICS
(2023)
Article
Chemistry, Multidisciplinary
Hassan Sadeghi, Seyed Sadredin Shojaedin, Ali Abbasi, Elham Alijanpour, Marcus Fraga Vieira, Zdenek Svoboda, Kianoush Nazarpour
Summary: Comparison of lower-extremity intra-joint coordination and its variability between fallers and non-fallers older adults during gait showed significant differences in spatiotemporal gait parameters and joint coordination patterns. Fallers exhibited lower cadence, walking speed, and stride length but greater double support and stride time than non-fallers. Differences in segment coordination and its variability suggest potential adaptations resulting from decreased efficiency and inconsistencies in neuromuscular control, indicating reduced ability to generate power during the push-off phase in fallers.
APPLIED SCIENCES-BASEL
(2021)
Article
Rehabilitation
Javad Sarvestan, Alan R. Needle, Peyman Aghaie Ataabadi, Zuzana Kovacikova, Zdenek Svoboda, Ali Abbasi
Summary: The study found that applying ankle KT can reduce ankle joint range of motion and angular velocities, ground reaction force rate of loading, and mediolateral time to stability. Additionally, there was a decrease in the activity amplitudes of the lateral gastrocnemius and peroneus longus after initial ground contact when ankles were taped, while the peroneus longus activity amplitudes increased before initial ground contact.
JOURNAL OF SPORT REHABILITATION
(2021)
Article
Chemistry, Analytical
Denisa Nohelova, Lucia Bizovska, Nicolas Vuillerme, Zdenek Svoboda
Summary: This study examined the influence of different surfaces and dual-task conditions on gait variability and complexity in young healthy adults in an outdoor environment. The findings indicate that surfaces significantly impacted gait variability, while tasks affected both gait variability and complexity.
Article
Neurosciences
Javad Sarvestan, Peyman Aghaie Ataabadi, Fateme Yazdanbakhsh, Shahram Abbasi, Ali Abbasi, Zdenek Svoboda
Summary: Uphill walking results in adjustments in ankle, knee, and hip joint angles to provide a stable base of support, but may also lead to reduced ankle movement variability and potential injuries during long-term uphill walking.
Article
Rehabilitation
Shahab Alizadeh, Javad Sarvestan, Zdenek Svoboda, Fatemeh Alaei, Petr Linduska, Peyman Aghaie Ataabadi
Summary: This study compared the hamstring to quadriceps ratios between healthy, hamstring-injured, and ACL-injured soccer players. The results showed that healthy players had higher ratios compared to players with hamstring or ACL injuries. The angle-specific analysis helped to identify the range of strength deficiency, which could be used in the design of rehabilitation protocols.
PHYSICAL THERAPY IN SPORT
(2022)
Article
Chemistry, Analytical
Barbora Kolarova, Miroslav Janura, Zdenek Svoboda, Petr Kolar, Dagmar Tecova, Milan Elfmark
Summary: The study assesses postural control strategies in individuals with transtibial amputation, finding that they bear less weight on the prosthetic leg and have reduced inclination toward it compared to controls. Weight-bearing symmetry and inclination toward the prosthetic leg were positively correlated with prosthesis use duration in tTTA group.
Article
Sport Sciences
Lukas Slovak, David Zahradnik, Roman Farana, Zdenek Svoboda, Fatemeh Alaei, Javad Sarvestan
Summary: The study found that in volleyball spike jumps, U-18 and U-20 players performed better in force-time curve variables compared to U-14 and U-16 groups, showing significant improvements in velocity, power, and jump height. Additionally, significant correlations were found between relative peak rate of force development, relative average rate of force development, and relative peak power with jump height in different age groups.
INTERNATIONAL JOURNAL OF PERFORMANCE ANALYSIS IN SPORT
(2022)
Article
Sport Sciences
Mahdi Cheraghi, Sahar Boozari, Zdenek Svoboda, Zuzana Kovacikova, Alan R. Needle, Javad Sarvestan
Summary: This study found that lateral ankle support using KT can decrease ankle range of motion in the frontal plane and peroneus longus activity while improving jump height, ankle plantar flexion range of motion, and various kinematic and kinetic variables. The findings suggest that KT may be beneficial for supporting the ankle joint and improving jump performance among athletes with CAI.
SPORT SCIENCES FOR HEALTH
(2022)
Article
Medicine, General & Internal
Jan Belka, Karel Hulka, Michal Safar
Summary: This study compares the effects of high-volume continuous endurance training (HVT) and small-sided games (SSGs) on the development of aerobic performance and upper-limb strength in handball players. The results indicate that SSGs have a greater positive effect on these aspects compared to HVT.
MEDICINA DELLO SPORT
(2022)
Article
Multidisciplinary Sciences
Javad Sarvestan, Peyman Aghaie Ataabadi, Zdenek Svoboda, Fatemeh Alaei, Ryan B. Graham
Summary: Mobile phone use affects gait dynamics by impairing visual control and introducing additional cognitive demands. This study assessed the impacts of different types of mobile phone use on motor variability during gait and found that looking at the phone significantly increased the variability of hip and pelvis joint angles, but had no significant effect on the variability of center of mass position and muscle activation patterns.
Article
Psychology, Multidisciplinary
Jana Kvintova, Lucie Kremenkova, Roman Cuberek, Jitka Petrova, Iva Stuchlikova, Simona Dobesova-Cakirpaloglu, Michaela Pugnerova, Kristyna Balatova, Sona Lemrova, Miluse Viteckova, Irena Plevova
Summary: European policy on early childhood preschool education has undergone changes and innovations over the last decade, which have been reflected in the policies of individual EU countries, including the Czech Republic. This study assessed the influence of different preschool education systems in the Czech Republic on psychological variables of children, such as attitudes, motivations, and executive functions, which could contribute to future school achievement. The results showed that the type of kindergarten attended had a significant effect on school performance motivation, attitudes toward school, and executive functions of the children.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Rehabilitation
Kamila Banatova, Ludvik Valtr, Roman Cuberek
Summary: The purpose of this study was to adapt the MABC-2 Checklist to Czech primary schools by examining its content validity and feasibility. The study found that the checklist achieved satisfactory content validity and was considered clear, objective, and logically structured by experts and classroom teachers. The teachers also found its administration comprehensible and fast. The MABC-2 Checklist is applicable in the Czech school environment, but its adaptation to different countries should consider local children's common motor skills.
OCCUPATIONAL THERAPY IN HEALTH CARE
(2023)
Article
Sport Sciences
Karel Hulka, Matej Strniste, Michal Hruby
Summary: This study aimed to assess the influence of fatigue on internal and external load using game-based drills in junior and adult male basketball players. The results showed that fatigue significantly affected the distance covered and intensity of activity demands during the last three minutes of quarters, but did not affect the heart rate response of players.
Article
Sport Sciences
Karel Hulka, Matej Strnist
Summary: The study showed that both SSG and HVT training interventions were effective for aerobic improvement for the U19 category. HVT significantly improved aerobic performance in the U17 and U19 groups, while the effect was less pronounced for younger players.
