Article
Multidisciplinary Sciences
Artur Struzik, Slawomir Winiarski, Jerzy Zawadzki
Summary: The purpose of this study was to investigate the differences in leg stiffness between the dominant and non-dominant lower limb during a two-legged countermovement jump. The results revealed significant inter-limb asymmetry of leg stiffness in both the countermovement and take-off phases.
Article
Computer Science, Interdisciplinary Applications
Jingheng Shu, Hedi Ma, Xin Xiong, Bingmei Shao, Tinghui Zheng, Yang Liu, Zhan Liu
Summary: Understanding the motional regular and dynamic information during mandibular motions is essential for investigating temporomandibular joint dysfunctions. This study developed a method to record and analyze condylar trajectory, velocity, and acceleration in asymptomatic individuals. Differences in velocity and acceleration were observed during various mandibular motions, highlighting the importance of understanding the dynamic information of TMJs through sagittal space, velocity, and acceleration measurements.
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
(2021)
Article
Engineering, Chemical
Liu Yang, Huan Chen, Junyu Xiao, Yuchao Fan, Shaoyun Song, Yonglin Zhang, Xiaopeng Liu
Summary: The study investigated the force-structure property of coating castor seed to understand the breaking behavior and rupture mechanism of castor seed episperm during coat shelling process. Results showed that compression distance had a significant effect on episperm cracking, while pressing velocity had minimal impact. Temperature changes altered the physical property of the episperm, leading to a slope decline in breaking force.
Article
Multidisciplinary Sciences
Peijian Shi, Kexin Yu, Karl J. Niklas, Julian Schrader, Yu Song, Renbin Zhu, Yang Li, Hailin Wei, David A. Ratkowsky
Summary: This study used empirical nonlinear equations to generate ovate leaf shapes and found that the modified equations had better fitting results compared to the unmodified equations. The MLRF equation provided the best overall fit for describing ovate leaf shapes among the tested species.
Article
Neurosciences
Amornthep Jankaew, Shing-Jye Chen, Cheng-Chieh Lin, Cheng-Hsin Tsai, Ming-Tung Huang, Cheng-Feng Lin
Summary: The study found that adjusting the outsole of motion control shoes can improve trunk symmetry and decrease ground reaction force during walking in individuals with mild leg length discrepancy. This provides additional information for prescribing or recommending footwear adjustment to improve walking symmetry in these patients.
Article
Automation & Control Systems
Jie Deng, Yingxiang Liu, Jing Li, Shijing Zhang, Kai Li
Summary: This letter proposes a bipedal alternating inertial actuation mode (BAIAM) to improve the displacement linearity of stepping piezoelectric platforms. Experimental results confirm the effectiveness of the proposed method in achieving linear outputs for precision fields requiring a large travel range, planar two-degree-of-freedom motion.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Chemistry, Physical
Zhuheng Li
Summary: By using a nonlinear spring element in a numerical method, the accuracy of simulating the concrete mode I crack propagation process is improved. The iterative process applied in the simulation verifies the accuracy and applicability of the approach.
Article
Rehabilitation
John Fournier, Guy Trudel, Robert J. Feibel, Hans Uhthoff, Dennis McGonagle, T. Mark Campbell
Summary: Knee flexion contracture is associated with leg length inequality and/or morbidity in knee osteoarthritis. Analysis of two databases shows a correlation between knee flexion contracture and leg length inequality.
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Zilong Qiu, Annelies Malfliet, Muxing Guo, Bart Blanpain
Summary: This study proposes a new iteration scheme that assumes the inertial force between particles is different at each point, in contrast to previous studies where the inertial force is assumed to be the same at the first two distances. The study also found that when the measured inter-particle distance is inaccurate, both identical and non-identical force schemes may lead to unreasonably oscillating force. Additionally, the use of curve fitting functions, such as 4th order polynomial and 2nd order sine functions, has been shown to be the most robust in predicting the inertial force on particles even with less accurate measured distances.
ISIJ INTERNATIONAL
(2021)
Article
Engineering, Aerospace
Fei Wu, Zhiping Liu, Kazhong Deng, Guobin Chang
Summary: The research suggests that utilizing daily polar displacement and the angle of polar displacement with respect to the X axis of the terrestrial frame can improve accuracy in modeling and forecasting. The proposed method shows significant advantages in polar motion prediction, with increased accuracy compared to conventional approaches.
ADVANCES IN SPACE RESEARCH
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Cun-Jing Zheng, Ben-Heng Xiao, Hua Huang, Nan Zhou, Tai-Yu Yan, Yi Xiang J. Wang
Summary: The study confirmed that fitting IVIM data without utilizing b=0 images can improve the stability of liver IVIM measurement, particularly for the perfusion fraction parameter.
QUANTITATIVE IMAGING IN MEDICINE AND SURGERY
(2022)
Article
Engineering, Civil
Chun-Chung Chen, Sheng-Yuan Siao, Chi-Rung Jiang, Bo-Han Lee, Fang-Yao Yeh
Summary: The study analyzed the structural effects of unequal leg lengths on transmission towers, finding that different leg length configurations primarily affect the extension part and tower leg components, while having minimal impact on the upper parts of the tower structure. The research provides valuable insights for disaster prevention and reduction efforts in the future.
Article
Engineering, Marine
Xiaoxu Du, Naveed Ali, Lianying Zhang
Summary: The study evaluates the underwater effects of wave forces on motion characteristics of the Blended winged-body underwater glider (BWB UG), using panel method and simulations under Airy wave theory and head sea conditions. The results show that different frequencies and amplitudes of wave forces affect the stability and navigation of the UG.
Article
Materials Science, Textiles
Rui Dan, Zhiqin Liu, Zhen Shi
Summary: This study simulated the displacement distribution of the human body wearing compression garment using computerized tomography scanning and finite element method. The functional relationship between pressure/displacement ratio and angle was obtained through quadratic curve fitting. The research indicated that this relationship remains almost unchanged regardless of the type of compression garment worn or the state of the human body. This conclusion provides an important reference for evaluating clothing pressure comfort and optimizing clothing structure.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Agriculture, Dairy & Animal Science
Yudong Wang, Xianou Fu, Sihui Wang, Ichraf Mabrouk, Yuxuan Zhou, Yupu Song, Tuoya Liu, Jingyun Ma, Fangming Zhuang, Xue Zhang, Keyi Xu, Yongfeng Sun
Summary: This study used mathematical models to assess feather growth and development during the embryonic period in Jilin white geese, and determined which growth model accurately described feather growth patterns. The logistic growth model was found to be the most suitable for describing the overall changes in feather growth. Feather growth curve parameters may provide new strategies for genetic improvement programs in Jilin white geese.
JOURNAL OF ANIMAL SCIENCE
(2023)
Review
Computer Science, Interdisciplinary Applications
Mariana Silva, Bruno Freitas, Renato Andrade, Oscar Carvalho, Daniel Renjewski, Paulo Flores, Joao Espregueira-Mendes
Summary: This systematic review examined the characteristics and methods used in human lower limb or knee joint biomechanical models, revealing a wide range of experimental setups and modeling strategies. However, there is a lack of standardized methods for reporting the characteristics and methods of these models.
ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
(2021)
Correction
Biology
Michael Guenther, Daniel F. B. Haeufle, Syn Schmitt
JOURNAL OF THEORETICAL BIOLOGY
(2020)
Article
Biophysics
Falk Moerl, Michael Guenther, Julia M. Riede, Maria Hammer, Syn Schmitt
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
(2020)
Article
Physiology
Robert Rockenfeller, Michael Guenther, Norman Stutzig, Daniel F. B. Haeufle, Tobias Siebert, Syn Schmitt, Kay Leichsenring, Markus Boel, Thomas Goetz
FRONTIERS IN PHYSIOLOGY
(2020)
Article
Biology
Michael Guenther, Falk Moerl
Summary: This study validates a reductionist spine model's predictions using human intradiscal pressure data, and examines the compressive stress on intervertebral discs in different species. The results demonstrate that human everyday compressive disc stresses are lower than those in big quadrupedal animals, and that erecting the spine significantly reduces the pressure.
Article
Biophysics
Johanna Vielemeyer, Roy Mueller, Nora-Sophie Staufenberg, Daniel Renjewski, Rainer Abel
Summary: Research has shown that in different support phases of human walking, the direction of ground reaction forces and the height of the virtual pivot point may vary due to the vertical movement of the center of mass and differences in contact time.
JOURNAL OF BIOMECHANICS
(2021)
Editorial Material
Medicine, General & Internal
Michael Guenther, Falk Moerl, Robert Rockenfeller
FRONTIERS IN MEDICINE
(2022)
Editorial Material
Medicine, General & Internal
Falk Moerl, Michael Guenther, Robert Rockenfeller
FRONTIERS IN MEDICINE
(2022)
Article
Multidisciplinary Sciences
R. Rockenfeller, M. Guenther, F. Moerl
Summary: Counts of SARS-CoV-2-related deaths have been used to justify severe measures, but recent studies show that the reported excess mortality is an exaggeration. In Germany, the excess mortality for the years 2020 and 2021 is much lower than previously estimated, with a negative count of -18,500 in 2020 and a minor positive count of 7,000 in 2021. The analysis also suggests that the number of Germans who died due to, rather than with, CoViD-19 is no more than 59,500.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Proceedings Paper
Robotics
Alexandra Buchmann, Bernadett Kiss, Alexander Badri-Sproewitz, Daniel Renjewski
Summary: This study investigates the role of GAS and SOL in APO and finds that the elastic MTU properties shape the impulsive APO, eliminating the need for complex ankle actuation.
ROBOTICS IN NATURAL SETTINGS, CLAWAR 2022
(2023)
Article
Physics, Fluids & Plasmas
Daniel Renjewski, Susanne Lipfert, Michael Guenther
Summary: This article proposes a mathematical model that captures the dynamics of human foot during walking and analyzes the functional interplay of biomechanical contributors. It identifies the foot as the key functional element in walking and provides insights for gait therapy, assistive device development, and humanoid robot design and control.
Proceedings Paper
Engineering, Biomedical
Mariana Silva, Bruno Freitas, Paulo Flores, Oscar Carvalho, Daniel Renjewski, Joao Espregueira-Mendes
2019 6TH IEEE PORTUGUESE MEETING IN BIOENGINEERING (ENBENG)
(2019)
Article
Robotics
Daniel F. B. Haeufle, Isabell Wochner, David Holzmueller, Danny Driess, Michael Guenther, Syn Schmitt
FRONTIERS IN ROBOTICS AND AI
(2020)
Article
Biology
Iain Hunter, Raz Leib
Summary: Natural movement is related to health, but it is difficult to measure. Existing methods cannot capture the full range of natural movement. Comparing movement across different species helps identify common biomechanical and computational principles. Developing a system to quantify movement in freely moving animals in natural environments and relating it to life quality is crucial. This study proposes a theoretical framework based on movement ability and validates it in Drosophila.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Andy Gardner
Summary: Fisher's geometric model is a useful tool for predicting key properties of Darwinian adaptation, and here it is applied to predict differences between the evolution of altruistic versus nonsocial phenotypes. The results suggest that the effect size maximizing probability of fixation is smaller in the context of altruism and larger in the context of nonsocial phenotypes, leading to lower overall probability of fixation for altruism and higher overall probability of fixation for nonsocial phenotypes.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Thomas F. Pak, Joe Pitt-Francis, Ruth E. Baker
Summary: Cell competition is a process where cells interact in multicellular organisms to determine a winner or loser status, with loser cells being eliminated through programmed cell death. The winner cells then populate the tissue. The outcome of cell competition is context-dependent, as the same cell type can win or lose depending on the competing cell type. This paper proposes a mathematical framework to study the emergence of winner or loser status, highlighting the role of active cell death and identifying the factors that drive cell competition in a cell-based modeling context.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Haruto Tomizuka, Yuuya Tachiki
Summary: Batesian mimicry is a strategy in which palatable prey species resemble unpalatable prey species to avoid predation. The evolution of this mimicry plays a crucial role in protecting the unpalatable species from extinction.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Jason W. Olejarz, Martin A. Nowak
Summary: Gene drive technology shows potential for population control, but its release may have unpredictable consequences. The study suggests that the failure of suppression is a natural outcome, and there are complex dynamics among wild populations.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Hamid Ravaee, Mohammad Hossein Manshaei, Mehran Safayani, Javad Salimi Sartakhti
Summary: Gene expression analysis is valuable for cancer classification and phenotype identification. IP3G, based on Generative Adversarial Networks, enhances gene expression data and discovers phenotypes in an unsupervised manner. By converting gene expression profiles into images and utilizing IP3G, new phenotype profiles can be generated, improving classification accuracy.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Beatrix Rahnsch, Leila Taghizadeh
Summary: This study forecasts the evolution of the COVID-19 pandemic in Germany using a network-based inference method and compares it with other approaches. The results show that the network-inference based approach outperforms other methods in short-to mid-term predictions, even with limited information about the new disease. Furthermore, predictions based on the estimation of the reproduction number in Germany can yield more reliable results with increasing data availability, but still cannot surpass the network-inference based algorithm.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Rongsheng Huang, Qiaojun Situ, Jinzhi Lei
Summary: Maintaining tissue homeostasis requires appropriate regulation of stem cell differentiation. Random inheritance of epigenetic states plays a pivotal role in stem cell differentiation. This computational model provides valuable insights into the intricate mechanism governing stem cell differentiation and cell reprogramming, offering a promising path for enhancing the field of regenerative medicine.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Patrick Vincent N. Lubenia, Eduardo R. Mendoza, Angelyn R. Lao
Summary: This study compares insulin signaling in healthy and type 2 diabetes states using reaction network analysis. The results show similarities and differences between the two conditions, providing insights into the mechanisms of insulin resistance, including the involvement of other complexes, less restrictive interplay between species, and loss of concentration robustness in GLUT4.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Nuverah Mohsin, Heiko Enderling, Renee Brady-Nicholls, Mohammad U. Zahid
Summary: Mathematical modeling is crucial in understanding radiobiology and designing treatment approaches in radiotherapy for cancer. This study compares three tumor volume dynamics models and analyzes the implications of model selection. A new metric, the point of maximum reduction of tumor volume (MRV), is introduced to quantify the impact of radiotherapy. The results emphasize the importance of caution in selecting models of response to radiotherapy due to the artifacts imposed by each model.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Armindo Salvador
Summary: Michael Savageau's Biochemical Systems Analysis papers have had a significant impact on Systems Biology, generating core concepts and tools. This article provides a brief summary of these papers and discusses the most relevant developments in Biochemical Systems Theory since their publication.
JOURNAL OF THEORETICAL BIOLOGY
(2024)