A Recognition Methodology for the Key Geometric Errors of a Multi-Axis Machine Tool Based on Accuracy Retentivity Analysis by Shijie Guo, Shufeng Tang, Dongsheng Zhang

“…This paper proposes a recognition methodology for key geometric errors using the feature extraction method and accuracy retentivity analysis and presents the approach of optimization compensation of the geometric error of a multiaxis machine tool. The universal kinematics relations of the multiaxis machine tool are first modelled mathematically based on screw theory. …”
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Are Elite Collegiate Female Athletes PRIME for a Safe Return to Sport after ACLR? An Investigation of Physical Readiness and Integrated Movement Efficiency (PRIME) by Courtney R Chaaban, Darren Hearn, Benjamin Goerger, Darin A Padua

“… # Purpose To compare elite collegiate female athletes who were able to successfully return to sport for at least one season following ACLR to their teammates with no history of ACLR with regard to self-reported knee function, kinetics, and kinematics during a double limb jump-landing task. # Study Design Cross-Sectional Study # Level of Evidence Level 3 # Methods Eighty-two female collegiate athletes (17 ACLR, 65 control) completed the knee-specific SANE (single assessment numeric evaluation) and three trials of a jump-landing task prior to their competitive season. vGRF data on each limb and the LESS (Landing Error Scoring System) score were collected from the jump-landing task. …”
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Investigating the Effect of Preimpact Energy Dissipation on Coefficient of Restitution regarding the Slope-Boulder Interaction by Ran Bi, Shaoying Li, Gou Liu, Jianxi Ren, Yongjun Song

“…The results show that (1) as the inclination of initial velocity, higher rebound height, and the declining normal coefficient of restitution occur, a determinable linear function could demonstrate relationships among energy dissipation and all coefficient of restitution; when initial velocity exceeds 5 m/s, the recovery ability shows and produces an increasing trend with respect to the variation of kinematic coefficient of restitution and kinetic energy coefficient of restitution. (2) As the surface material varies, slope hardness and rebound ability influence normal coefficient of restitution, and the surface roughness and rotation feature dominate tangential coefficient of restitution; considering preimpact slope and boulder interactions, four types of coefficient of restitution follow declining trend with different material sequence. (3) Slope angle affects normal coefficient of restitution, and tangential coefficient of restitution relatively descends 18% and inclines 10% when the angle ranges from 30° to 75°; regarding preimpact moving status, it differs from bounce times. …”
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Estimation of minimum foot clearance using a single foot-mounted inertial sensor and personalized foot geometry scan by Katherine Heidi Fehr, Jennifer Nicole Bartloff, Yisen Wang, Scott Hetzel, Peter G. Adamczyk

“…This method offers researchers and clinicians a rich understanding of a person’s gait by providing objective 3D foot kinematics and allowing a unique opportunity to view the regions of the foot where minimum clearance occurs. …”
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Lifting Techniques: Why Are We Not Using Evidence To Optimize Movement? by Nicholas B. Washmuth, Abby D. McAfee, C. Scott Bickel

“…There may be few biomechanical differences in spinal postures and gross loads on the lumbar spine between stoop, squat, and semi-squat lifting; however, each lift has distinct kinematic patterns that affects muscle activation patterns, and ultimately the movement system. …”
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Postural Control During Single-Leg Landing in Female Athletes After Anterior Cruciate Ligament Reconstruction by Ayane Ogura, Terumitsu Miyazaki, Hirofumi Ida, Satoshi Shibata, Masahiro Takemura

“… # Purpose The purpose of this study was to clarify the differences in muscle activities of APAs and CPAs, lower limb kinematics, and kinetics between athletes with a history of ACLR and healthy athletes during single-leg landing…”
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Does the 2D Frontal Plane Projection Angle Predict Frontal Plane Knee Moments during Stepping, Landing, and Change of Direction Tasks? by Rachel K Straub, Christopher M Powers

“…# Background Although dynamic knee valgus can be visually identified using the 2D frontal plane projection angle (FPPA), the validity of the FPPA in terms of predicting frontal plane knee kinematics has been questioned. The biomechanical utility of the FPPA may lie in its ability to predict frontal plane knee moments…”
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Two-dimensional flood model for risk exposure analysis of land use/land cover in a watershed by G. Puno, R. Puno, I. Maghuyop

“…The process involved utilizing a high-resolution digital elevation model and a set of high-precision instruments such as the real-time kinematic-global position system receiver, digital flow meter, deep gauge, and automatic weather station in collecting the respective data on bathymetry, river discharge, river depth, and rainfall intensity during a particular climatic event, needed for the model development, calibration and validation. …”
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DESIGN AND TEST OF A SUPPORT CUTTING ANTI-CLOGGING DEVICE WITH VIBRATION FOR A NO-TILL SEEDER by Mengnan Yin, Wenjun Wang, Yulong Chen, Long Zhou, Mingwei Li

“…Through theoretical calculations and kinematic analysis, the main structural parameters of the device were limited to small ranges of values: the mounting angle of the vibrating knife was in the range θ1 = 70–82°, the amplification was in the range l1 = 14–24 mm, and the frequency was in the range ωm = 240–340 rad/min. …”
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Effects of Age and Gender on Hand Motion Tasks by Wing Lok Au, Irene Soo Hoon Seah, Wei Li, Louis Chew Seng Tan

“…The aim of this study is to determine if there are any biological influences on these kinematic parameters. Methods. 80 healthy subjects performed hand motion tasks twice for each hand, with movements measured using a wireless motion sensor device (Kinesia, Cleveland Medical Devices Inc., Cleveland, OH). …”
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The Reliability and Validity of Gluteal Endurance Measures (GEMs) by B J Lehecka, Barbara S Smith, Todd Rundell, Thomas A Cappaert, Nils A Hakansson

“…Evidence suggests gluteal endurance is related to low back pain, running kinematics, balance, posture, and more. However, reliable and valid measures specific to gluteal endurance are lacking in the literature…”
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Which is more effective in thawing frozen rooster sperm: varying temperature or duration? by Mustafa Yiğit Nizam, Murat Selçuk, Burcu Esin

“…Sperm quality parameters, including motility, kinematic characteristics, abnormal morphology, and viability, were assessed at 0, 3, 6, 9, 12, 24, and 48 hours using a Computer-Assisted Semen Analyzer (CASA).ResultsPost-thaw motility varied significantly between thawing temperatures at 24 and 48 hours (p < 0.05). …”
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Design and Optimization of Power Harrow Soil Crushing Components for Coastal Saline–Alkali Land by Nan Xu, Zhenbo Xin, Jin Yuan, Zenghui Gao, Yu Tian, Chao Xia, Xuemei Liu, Dongwei Wang

“…This paper centers on the key soil crushing component, the harrow blade, and conducts research from the perspectives of kinematics and dynamics. Initially, the ranges of key structural and motion parameters are determined, such as the angle of the harrow blade cutting edge, the thickness of the of the harrow blade cutting edge, and the ratio of the circumferential speed to the forward speed. …”
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The association among ball speed and the rotation of pivot leg, pelvis, and trunk separation in collegiate baseball pitchers by Naoki Wada, Mitsuo Otsuka, Yuta Yamaguchi, Takehiko Tsuji, Takatoshi Kojo, Tokuyoshi Kono, Tetsunari Nishiyama

“…This study aimed to investigate the association between the pivot leg rotation, pelvis rotation, and trunk separation during the stride phase of baseball pitching in relation to ball speed. Three-dimensional kinematic data from 18 collegiate baseball pitchers were obtained during the maximal-effort pitches. …”
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Optimisation of trimethylolpropane ester synthesis from waste cooking oil methyl ester by response surface methodology, and its physicochemical properties and tribological characte... by Teuku Meurah Indra Riayatsyah, Arridina Susan Silitonga, Md Abul Kalam, Islam Md Rizwanul Fattah

“…The TWCOE biolubricant had a kinematic viscosity of 41.55 mm2/s at 40 °C and 6.93 mm2/s at 100 °C. …”
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The effects of different carbon-fiber plate shapes in shoes on lower limb biomechanics following running-induced fatigue by Yufan Xu, Chengyuan Zhu, Yufei Fang, Zhenghui Lu, Zhenghui Lu, Zhenghui Lu, Yang Song, Chen Hu, Dong Sun, Yaodong Gu

“…Two-way repeated measures ANOVA was used to compare kinematic and kinetic data, while SPM (Statistical Parametric Mapping) was used to assess the activation levels of lower limb muscles. …”
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New Insights on the Seismic Activity of Ostuni (Apulia Region, Southern Italy) Offshore by Pierpaolo Pierri, Marilena Filippucci, Vincenzo Del Gaudio, Andrea Tallarico, Nicola Venisti, Vincenzo Festa

“…Our results show right-lateral transtensional kinematics of the seismogenic faults along approximately E-W striking planes, with a tension, T, with a trend of about 60° (NE-SW direction) and a plunge of 20°. …”
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Immediate and long-term effects of zero-drop running shoes on lower extremity biomechanics by Zimeng Liu, Yulin Zhou, Hui Liu, Hui Liu, Peng Cheng, Peng Cheng, Zhiyi Zheng, Quanshou Zeng

“…ObjectiveThe purpose of the study was to investigate the immediate and long-term effects of zero-drop running shoes on lower extremity joint biomechanics.MethodsSeven male runners participated in this study (height: 1.74 ± 0.03 m, weight: 62.5 ± 3.1 kg, body mass index: 20.6 ± 0.7 kg/m2). Kinematic and kinetic data were collected when the participants ran at a speed of 13 ± 0.65 km/h in running shoes with zero and 15 mm drop both immediately and after the 8-week intervention wearing zero-drop running shoes. …”
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Accuracy of Markerless 3D Motion Capture Evaluation to Differentiate between On/Off Status in Parkinson’s Disease after Deep Brain Stimulation by Hector R. Martinez, Alexis Garcia-Sarreon, Carlos Camara-Lemarroy, Fortino Salazar, María L. Guerrero-González

“…However, some items such as left shoulder flexion (p=0.038), right shoulder rotation (p=0.011), and left trunk rotation (p=0.023) were different between Off patients and healthy controls. Significance. Kinematic data obtained with this markerless system could contribute to discriminate between PD patients and healthy controls. …”
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Design Optimization of a 3-PUU Parallel Machine for Friction Stir Welding Robots by Eka Marliana, Latifah Nurahmi, Arif Wahjudi, I. Made Londen Batan, Guowu Wei

“…A prototype of the optimal design was built, and a series of experiments were conducted to verify and validate the kinematic and dynamic models within the defined cuboid workspace, which provides foundations for further industrial applications of the proposed machine in FSW.…”
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