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Journal articles on the topic 'Video Pitching'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Davis, J. T., Orr Limpisvasti, Derrick Fluhme, et al. "The Effect of Pitching Biomechanics on the Upper Extremity in Youth and Adolescent Baseball Pitchers." American Journal of Sports Medicine 37, no. 8 (2009): 1484–91. http://dx.doi.org/10.1177/0363546509340226.

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Background Increased pitch counts have been linked to increased complaints of shoulder and elbow pain in youth baseball pitchers. Improper pitching mechanics have not been shown to adversely affect the upper extremity in youth pitchers. Hypothesis The correct performance of 5 biomechanical pitching parameters correlates with lower humeral internal rotation torque and elbow valgus load, as well as higher pitching efficiency, in youth and adolescent pitchers. Study Design Descriptive laboratory study. Methods In sum, 169 baseball pitchers (aged 9-18) were analyzed using a quantitative motion ana

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Oyama, Sakiko, Araceli Sosa, Rebekah Campbell, and Alexandra Correa. "Reliability and Validity of Quantitative Video Analysis of Baseball Pitching Motion." Journal of Applied Biomechanics 33, no. 1 (2017): 64–68. http://dx.doi.org/10.1123/jab.2016-0011.

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Video recordings are used to quantitatively analyze pitchers’ techniques. However, reliability and validity of such analysis is unknown. The purpose of the study was to investigate the reliability and validity of joint and segment angles identified during a pitching motion using video analysis. Thirty high school baseball pitchers participated. The pitching motion was captured using 2 high-speed video cameras and a motion capture system. Two raters reviewed the videos to digitize the body segments to calculate 2-dimensional angles. The corresponding 3-dimensional angles were calculated from th

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Joseph, Corina, Rashinah Hossen, Mariam Rahmat, Josephine Avelind Noyem, and Voon Boo Ho. "Exploring the Readiness for Business Proposal Pitching Video Activity Using the Competition-based Learning Model Among Accounting Students." International Business Education Journal 14, no. 2 (2021): 13–24. http://dx.doi.org/10.37134/ibej.vol14.2.2.2021.

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The business plan competition using the competition-based learning model is one of the learning activities used for promoting entrepreneurial education and preparing future-ready entrepreneurial graduates. Using the competition-based learning model, a specific learning activity was conducted via the preparation of business proposal pitching video for the Strategic Management (MAF661) course with the theme ‘Sustainable Business Solution or Ideas in Response to COVID-19 Pandemic’. The study aimed to explore the perception of readiness among accounting students to engage in the competition-based

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Fry, Karl E., Andrew Pipkin, Kelcie Wittman, Scott Hetzel, and Marc Sherry. "Youth Baseball Pitching Stride Length: Normal Values and Correlation With Field Testing." Sports Health: A Multidisciplinary Approach 9, no. 3 (2016): 205–9. http://dx.doi.org/10.1177/1941738116679815.

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Background: Pitching biomechanical analysis has been recommended as an important component of performance, injury prevention, and rehabilitation. Normal values for youth pitching stride length have not been established, leading to application of normative values found among professional pitchers to youth pitchers. Hypotheses: The average youth pitching stride length will be significantly less than that of college and professional pitchers. There will be a positive correlation between stride length, lower extremity power, balance, and pitching experience. Study Design: Prospective cohort study.

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Wen, Bor-Jiunn, Che-Rui Chang, Chun-Wei Lan, and Yi-Chen Zheng. "Magnus-Forces Analysis of Pitched-Baseball Trajectories Using YOLOv3-Tiny Deep Learning Algorithm." Applied Sciences 12, no. 11 (2022): 5540. http://dx.doi.org/10.3390/app12115540.

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This study analyzed the characteristics of pitched baseballs from TV broadcast videos to understand the effects of the Magnus force on a pitched-baseball trajectory using aerodynamic theory. Furthermore, an automatic measurement and analysis system for pitched-baseball trajectories, ball speeds, and spin rates was established, capturing the trajectory of the baseball thrown by the pitcher before the catcher catches it and analyzing its related dynamic parameters. The system consists of two parts: (1) capturing and detecting the pitched baseball in all frames of the video using the YOLOv3-tiny

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Yamada, Kenji, Ingo Jahn, and David Buttsworth. "Experimental and Analytical Investigation of Hypersonic Fluid-Structure-Interactions on a Pitching Flat Plate Airfoil." Applied Mechanics and Materials 846 (July 2016): 157–62. http://dx.doi.org/10.4028/www.scientific.net/amm.846.157.

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Understanding the effects of unsteady flows is a critical area of hypersonic research. This paper presents a comparison of experimental results and analytical tools commonly used for the prediction of fluid structure interactions: Piston theory, Van Dyke’s theory, and Unsteady Shock Expansion theory. The investigation is carried out with a wedge-nosed flat-plate airfoil with pitching degree-of-freedom at Mach 6 flow conditions.High-speed Schlieren video is used to extract data about airfoil pitching motion and the unsteady shock structure. These data are compared to predictions from the variou

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DeFroda, Steven F., Charles A. Thigpen, and Peter K. Kriz. "Two-Dimensional Video Analysis of Youth and Adolescent Pitching Biomechanics." Current Sports Medicine Reports 15, no. 5 (2016): 350–58. http://dx.doi.org/10.1249/jsr.0000000000000295.

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Mariscal, Gonzalo, and Carlos Barrios. "Assessing Biomechanical and Clinical Outcomes of an Elbow Orthosis Intervention in Youth Baseball: Preliminary Results." Sports 12, no. 1 (2024): 24. http://dx.doi.org/10.3390/sports12010024.

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Proper orthosis design may help youth baseball players develop safer pitching mechanics to prevent elbow injuries. This study evaluated the impact of a custom elbow orthosis on pitching biomechanics and adverse events. Ten 11–12-year-old players (mean age 11.5 years) from a regional league team were recruited. The inclusion criteria were at least two years of baseball experience. Six players were randomly assigned to the orthosis group, with four in the control group. Anthropometric data and baseline characteristics were recorded. A video analysis assessed elbow flexion angle during pitching a

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Werner, Sherry L., John A. Guido, Ryan P. McNeice, Jasper L. Richardson, Neil A. Delude, and Gregory W. Stewart. "Biomechanics of Youth Windmill Softball Pitching." American Journal of Sports Medicine 33, no. 4 (2005): 552–60. http://dx.doi.org/10.1177/0363546504269253.

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Background Limited research attention has been paid to the potentially harmful windmill softball pitch. No information is available regarding lower extremity kinetics in softball pitching. Hypothesis The stresses on the throwing arm of youth windmill pitchers are clinically significant and similar to those found for college softball pitchers. Study Design Descriptive laboratory study. Methods Three-dimensional, high-speed (240-Hz) video and stride foot force plate (1200 Hz) data were collected on fastballs from 53 youth softball pitchers. Kinematic parameters related to pitching mechanics and

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Beaudry, Mason F., Anna G. Beaudry, James P. Bradley, et al. "Comparison of the “Tall and Fall” Versus “Drop and Drive” Pitching Styles: Analysis of Major League Baseball Pitchers During a Single Season." Orthopaedic Journal of Sports Medicine 11, no. 5 (2023): 232596712311736. http://dx.doi.org/10.1177/23259671231173691.

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Background: Previous research has documented the proportion of “tall and fall” (TF) and “drop and drive” (DD) pitching styles among Major League Baseball (MLB) pitchers who underwent ulnar collateral ligament reconstruction (UCLR). The proportion of these 2 styles among all MLB pitchers remains unknown. Purpose: To determine the proportion of the TF and DD pitching styles in all rostered MLB pitchers during a single season as well as the proportion of TF and DD pitchers who sustained an upper extremity (UE) injury and those who underwent UCLR. Study Design: Cross-sectional study; Level of evid

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Lyman, Stephen, Glenn S. Fleisig, James R. Andrews, and E. David Osinski. "Effect of Pitch Type, Pitch Count, and Pitching Mechanics on Risk of Elbow and Shoulder Pain in Youth Baseball Pitchers." American Journal of Sports Medicine 30, no. 4 (2002): 463–68. http://dx.doi.org/10.1177/03635465020300040201.

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Background Joint pain is thought to be an early sign of injury to a pitcher. Objective To evaluate the association between pitch counts, pitch types, and pitching mechanics and shoulder and elbow pain in young pitchers. Study Design Prospective cohort study. Methods Four hundred and seventy-six young (ages 9 to 14 years) baseball pitchers were followed for one season. Data were collected from pre- and postseason questionnaires, injury and performance interviews after each game, pitch count logs, and video analysis of pitching mechanics. Generalized estimating equations and logistic regression

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Chalmers, Peter N., Markus A. Wimmer, Nikhil N. Verma, et al. "The Relationship Between Pitching Mechanics and Injury: A Review of Current Concepts." Sports Health: A Multidisciplinary Approach 9, no. 3 (2017): 216–21. http://dx.doi.org/10.1177/1941738116686545.

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Context: The overhand pitch is one of the fastest known human motions and places enormous forces and torques on the upper extremity. Shoulder and elbow pain and injury are common in high-level pitchers. A large body of research has been conducted to understand the pitching motion. Evidence Acquisition: A comprehensive review of the literature was performed to gain a full understanding of all currently available biomechanical and clinical evidence surrounding pitching motion analysis. These motion analysis studies use video motion analysis, electromyography, electromagnetic sensors, and markere

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Nosu, K., Y. Yabuzaki, and K. Yamanaka. "Evaluation of baseball pitching form by ground reaction force measurement and video analysis." Journal of Visualization 12, no. 4 (2009): 293–94. http://dx.doi.org/10.1007/bf03181873.

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Chen, Yang, Haijun Wang, Junlong Xu, and Yu Du. "Design and application of an automated video inspection system for the inner wall of pressure vessels in nuclear power plant reactors." Journal of Physics: Conference Series 2902, no. 1 (2024): 012044. https://doi.org/10.1088/1742-6596/2902/1/012044.

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Abstract The pressure vessel of a nuclear power plant reactor is one of the key equipment in pressurized water reactor nuclear power plants, and its inner wall is an essential component of the pressure boundary in the primary loop. The inner wall of the reactor pressure vessel is subjected to long-term alternating stress and fluid erosion caused by the flow of the working fluid, which can easily form various surface defects such as pitting and unevenness. In order to timely detect and handle such defects while taking into account the maintenance period and personnel radiation risks, this paper

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Balakhonskaya, Liudmila V. "Pitch as a business PR-text: Communicative and pragmatic aspect." Media Linguistics 8, no. 3 (2021): 273–86. http://dx.doi.org/10.21638/spbu22.2021.306.

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The article discusses pitching as a communication technology and a pitch as a business PRtext. For a more complete and correct definition of the concepts of a pitch and pitching, the semantics of the multi-valued pitch lexeme underlying them are analyzed. The types of pitching are described by the field of activity, by the intended purpose and by the time of the presentation. The subject of the study was the textual features of the investment pitch as a PR communication tool. The main purpose of the work is to analyze the structural and content components of the investment pitch in the communi

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Seroyer, Shane T., Shane J. Nho, Bernard R. Bach, Charles A. Bush-Joseph, Gregory P. Nicholson, and Anthony A. Romeo. "The Kinetic Chain in Overhand Pitching: Its Potential Role for Performance Enhancement and Injury Prevention." Sports Health: A Multidisciplinary Approach 2, no. 2 (2010): 135–46. http://dx.doi.org/10.1177/1941738110362656.

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The overhead throwing motion is a coordinated effort of muscle units from the entire body, culminating with explosive motion of the upper extremity. The throwing motion occurs at a rapid pace, making analysis difficult in real time. Electromyographic studies and high-speed video recordings have provided invaluable details regarding the involved musculature, the sequence of muscle involvement, and associated kinematic variables. The goal of the present article is to provide an overview of the kinetic chain—that is, a detailed description of the muscular coordination during each phase of pitchin

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Malik, Ridwan Abdul, Ine Rachmawati, and Suhadi Parman. "PERANCANGAN DESAIN KARAKTER UNTUK “HEART AT WAR” PADA LEOLIT GAMES." SYNAKARYA Visual Communication Design Student Journal 5, no. 2 (2024): 31–48. http://dx.doi.org/10.33005/synakarya.v5i2.132.

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Industri video game di Indonesia berkembang pesat, dengan kontribusi dari developer lokal seperti Leolit Games yang berbasis di Semarang. Leolit Games sedang mengembangkan "Heart at War," sebuah game bergenre survival, management, dan simulation yang berfokus pada pendalaman cerita. Penelitian ini bertujuan merancang enam konsep desain karakter orisinal untuk game tersebut. Metode yang digunakan adalah Research & Development model PPE dari Richey & Klein, yang mencakup Planning, Production, dan Evaluation. Selain itu, penelitian ini juga berpedoman pada buku "Creative Character Design"

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Woldemelak, W. A. "Fighting Behaviour of Male Onion Thrips, Thrips tabaci (Thysanoptera: Thripidae) Lineages." Acta Phytopathologica et Entomologica Hungarica 55, no. 1 (2020): 123–30. http://dx.doi.org/10.1556/038.55.2020.011.

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Onion thrips, Thrips tabaci Lindeman, 1889 (Thysanoptera: Thripidae) has three distinctive reproductive modes: arrhenotokous, thelytokous and deuterotokous. This experiment was focused on the arrhenotokous leek-(L1) and tobacco-associated (T) T. tabaci lineages. These two lineages are distinctively varied genetically and in host adaptations. L1 and T lineages perform better on leek and tobacco plants, respectively. Fighting occurs between males when they compete for food, mating, and oviposition sites. The aim of this research was to examine the fighting behaviour and characterize the fighting

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Nakashima, Hirotaka, Gen Horiuchi, and Shinji Sakurai. "Standard of the Initial Ball Velocity for a Fly Ball in Baseball Hitting." Proceedings 49, no. 1 (2020): 137. http://dx.doi.org/10.3390/proceedings2020049137.

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This study aimed to determine the minimum required initial velocity to hit a fly ball toward the same field (left-field for right-handed batters), center field, and opposite field (right field for right-handed batters). Six baseball players hit fastballs launched by a pitching machine. The movements of the balls before and after bat-to-ball impact were recorded using two high-speed video cameras. The flight distance was determined using a measuring tape. Seventy-nine trials were analyzed, and the minimum required initial velocities of batted balls were quantified to hit balls 60, 70, 80, 90, 1

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Brandt, A., J. L. Mann, S. E. Rennie, A. P. Herzog, and T. B. Criss. "Three-Dimensional Imaging of the High Sea-State Wave Field Encompassing Ship Slamming Events." Journal of Atmospheric and Oceanic Technology 27, no. 4 (2010): 737–52. http://dx.doi.org/10.1175/2010jtecho712.1.

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Abstract Understanding and modeling ship wave slamming necessitates characterizing the surface wave field that results in slamming events. Shipboard measurements of the incoming wave field were made during sea trials of the twin-hull Sea Fighter (FSF-1), using a three-dimensional (3D), stereo-optic imaging system. The data obtained were processed using an image matching algorithm resulting in 3D video sequences of the incoming wave field at forward speeds of 16–40 kt in head seas at sea state 4. Six wave slamming events were captured, characterized, and compared to the average wave field prope

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Patil, Swapnali, Keshav Jaiwal, Prem Shinde, Tanmay Jain, and Prof. Shobha Patil. "SheEO: Empowering Women Entrepreneurs." International Journal of Ingenious Research, Invention and Development (IJIRID) 4, no. 2 (2025): 478–84. https://doi.org/10.5281/zenodo.15449513.

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<em>The rise of digital technologies has revolutionized the business landscape, particularly in terms of accessibility and scalability for entrepreneurs. In India, the entrepreneurial ecosystem has historically been male-dominated, but recent trends indicate a significant increase in women-led startups. SheEO, a web application, is designed to support and empower women entrepreneurs by providing a comprehensive platform for mentorship, funding, and resource access. The platform leverages matchmaking algorithms to offer a personalized feed, allowing users to connect directly with mentors and in

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Qiao, Jian. "Evaluation Algorithm for Team Strength Based on the Collected Healthcare Data through IoT and Smart Devices." Journal of Healthcare Engineering 2022 (January 7, 2022): 1–10. http://dx.doi.org/10.1155/2022/4969527.

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In the past, the fans used to evaluate the strength of the team according to the victory and defeat ranking or according to their own intuition and preferences, however, the strength of the team is difficult to measure in analytical figures. The team’s winning rate is not the only factor to be considered to determine the strength of the team. There are many factors to be considered for determining the strength of the team. According to the variation coefficient of basketball scoring frequency, the paper designs the principal model of basketball players’ pitching target system. The data is capt

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Ghaziani, Amin, Seth Abrutyn, and Letta Page. "The Importance of Contexts: A Q&A with the Graduate Editorial Board." Contexts 23, no. 4 (2024): 10–13. http://dx.doi.org/10.1177/15365042241294059.

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Over its nearly quarter-century existence, Contexts has relied on the contributions of dozens and dozens of talented, insightful, brilliant, dedicated, and hilarious graduate students, many of whom have gone on to become thought leaders within and beyond the discipline of sociology. In this training ground, they learn about the inner workings of an academic journal and a public-facing magazine—as well as the synergies and tensions that arise when collaborating with a team of editors to craft a publication meant to be both. Graduate editors’ roles involve tasks as disparate as searching for jus

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Basu, Christopher K., Francois Deacon, John R. Hutchinson, and Alan M. Wilson. "The running kinematics of free-roaming giraffes, measured using a low cost unmanned aerial vehicle (UAV)." PeerJ 7 (February 12, 2019): e6312. http://dx.doi.org/10.7717/peerj.6312.

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The study of animal locomotion can be logistically challenging, especially in the case of large or unhandleable animals in uncontrolled environments. Here we demonstrate the utility of a low cost unmanned aerial vehicle (UAV) in measuring two-dimensional running kinematics from free-roaming giraffes (Giraffa camelopardalis giraffa) in the Free State Province, South Africa. We collected 120 Hz video of running giraffes, and calibrated each video frame using metatarsal length as a constant object of scale. We tested a number of methods to measure metatarsal length. The method with the least vari

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Lopez Araujo, Lorenia, Eddy Jacobb Tolano Fierros, and Ivan de Jesús Toledo Domínguez. "Análisis por videografía 2D de la técnica de pitcheo de la categoría 13-16 años de la academia de béisbol de Itson (Analysis by 2D videography of the pitching technique of the 13-16 years category of the Itson baseball academy)." Retos 51 (October 17, 2023): 488–94. http://dx.doi.org/10.47197/retos.v51.98994.

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En el deporte es fundamental que el entrenador dirija adecuadamente la preparación física del deportista, su fin es lograr un máximo rendimiento de un atleta. Esto se alcanza trabajando armoniosamente la preparación física, psicológica y técnico- táctica, ya que, si el atleta cuenta con un alto desarrollo de fuerza, pero un pobre gesto técnico, no desplegará todo su potencial. El objetivo del estudio fue analizar la técnica de pitcheo de los lanzadores de las categorías 13-16 años de la academia de béisbol de Itson para la identificación del movimiento y la técnica mediante indicadores cinemát

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Wibowo, Bagus, Edi Sofyan, and Gembong Baskoro. "PROTOTYPE DESIGN OF SPEED DETECTION MOBILE APPLICATION FOR GOLFER’S SWING MOVEMENT USING COMPUTER VISION COMPARED TO PORTABLE RADAR AND ACCELEROMETER SYSTEMS." Proceedings of The Conference on Management and Engineering in Industry 1, no. 1 (2019): 49–52. http://dx.doi.org/10.33555/cmei.v1i1.7.

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Prototype Design of Golf Swing Speed Detection Mobile Application (GSSDMA)/Swing Vision (SV) has been researched and developed on this thesis with computer vision technique. Frames detection method has been implemented to performed calculation of the swing speed by manually identification of the frames from start of down swing to impact of the ball with Matlab Video Viewer as initial reference calculation, when head of golf club start to move to downswing as frame-zero/fr0 and frame-n/frn as end of the frame after the head of golf club impact to the ball and then the total frames can be determ

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Nevins, Derek, Lloyd Smith, and Jeff Kensrud. "Sensitivity of batted-ball speed to swing speed models." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 233, no. 3 (2019): 416–23. http://dx.doi.org/10.1177/1754337119835682.

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In baseball and softball, batted-ball velocities depend strongly on bat speed prior to contact. The purpose of this study was to characterize the sensitivity of hit. ball speed to swing speed models. A pitching machine was used to project balls at varying speeds considered to be age appropriate for female fastpitch softball batters ranging from 9 to 24 years of age. Participants swung bats of varying moment of inertia and high-speed video was used to measure bat and ball kinematics for each hit. Several power law swing speed models were compared, including a generic model for all participants,

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Shekhovtsov, O. V. "Quasi-three-dimensional modeling of the normal flapping flight of an elastic membrane ornithopter." Hydrodynamics and Acoustics 3(93), no. 3 (2024): 253–82. https://doi.org/10.15407/jha2024.03.253.

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A theoretical-experimental study of the aerodynamics of a membrane ornithopter flapping its wings in the mode of normal flapping flight with flow separation from the leading edges of the wings in still air was carried out using the improved method of discrete vortices generalized for viscous vortical media. The results of high-speed video recording of ornithopter wing flaps are used in the numerical modeling. The solution of the three-dimensional problem is reduced to two-dimensional solutions for the sections of an ornithopter wing: a quasi-three-dimensional problem of the dynamics of an inco

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Beaudry, Mason F., Anna G. Beaudry, James P. Bradley, et al. "Retrospective Analysis of Ulnar Collateral Ligament Reconstructions in Major League Baseball Pitchers: A Comparison of the “Tall and Fall” Versus “Drop and Drive” Pitching Styles." Orthopaedic Journal of Sports Medicine 10, no. 10 (2022): 232596712211280. http://dx.doi.org/10.1177/23259671221128041.

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Background: Previous pilot research has investigated differences in elbow valgus torque between the “tall and fall” (TF) and “drop and drive” (DD) pitching styles. Whether one of these pitching styles is associated with a greater rate of ulnar collateral ligament reconstruction (UCLR) is currently unknown. Purpose: To determine the proportion of Major League Baseball (MLB) pitchers using the TF and DD pitching styles who underwent UCLR over a 10-year period. Study Design: Cross-sectional study; Level of evidence, 3. Methods: The demographic characteristics of pitchers who underwent UCLR betwee

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Wang, Junshi, Dylan K. Wainwright, Royce E. Lindengren, George V. Lauder, and Haibo Dong. "Tuna locomotion: a computational hydrodynamic analysis of finlet function." Journal of The Royal Society Interface 17, no. 165 (2020): 20190590. http://dx.doi.org/10.1098/rsif.2019.0590.

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Finlets are a series of small non-retractable fins common to scombrid fishes (mackerels, bonitos and tunas), which are known for their high swimming speed. It is hypothesized that these small fins could potentially affect propulsive performance. Here, we combine experimental and computational approaches to investigate the hydrodynamics of finlets in yellowfin tuna ( Thunnus albacares ) during steady swimming. High-speed videos were obtained to provide kinematic data on the in vivo motion of finlets. High-fidelity simulations were then carried out to examine the hydrodynamic performance and vor

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Menzer, Alec, Yuchen Gong, Frank E. Fish, and Haibo Dong. "Bio-Inspired Propulsion: Towards Understanding the Role of Pectoral Fin Kinematics in Manta-like Swimming." Biomimetics 7, no. 2 (2022): 45. http://dx.doi.org/10.3390/biomimetics7020045.

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Through computational fluid dynamics (CFD) simulations of a model manta ray body, the hydrodynamic role of manta-like bioinspired flapping is investigated. The manta ray model motion is reconstructed from synchronized high-resolution videos of manta ray swimming. Rotation angles of the model skeletal joints are altered to scale the pitching and bending, resulting in eight models with different pectoral fin pitching and bending ratios. Simulations are performed using an in-house developed immersed boundary method-based numerical solver. Pectoral fin pitching ratio (PR) is found to have signific

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Steenstrup, Sophie Elspeth, Arnhild Bakken, Tone Bere, Declan Alexander Patton, and Roald Bahr. "Head injury mechanisms in FIS World Cup alpine and freestyle skiers and snowboarders." British Journal of Sports Medicine 52, no. 1 (2017): 61–69. http://dx.doi.org/10.1136/bjsports-2017-098240.

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IntroductionHead injuries represent a concern in skiing and snowboarding, with traumatic brain injuries being the most common cause of death.AimTo describe the mechanisms of head and face injuries among World Cup alpine and freestyle skiers and snowboarders.MethodsWe performed a qualitative analysis of videos obtained of head and face injuries reported through the International Ski Federation Injury Surveillance System during 10 World Cup seasons (2006–2016). We analysed 57 head impact injury videos (alpine n=29, snowboard n=13, freestyle n=15), first independently and subsequently in a consen

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Sevilla, Irene Joyce, and Lilibeth Edaño. "Quality And Acceptability of Instructional Videos in Teaching Softball." Psychology and Education: A Multidisciplinary Journal 36, no. 1 (2025): 19–30. https://doi.org/10.70838/pemj.360103.

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Softball is a popular team sport resembling baseball, typically played on a smaller field with a larger ball, utilizing underhand pitching. To address the lack of instructional materials and inadequate sports equipment in teaching softball, this study aimed to develop instructional videos for teaching softball at Lambayong National High School. The study utilized a research and development design among Grade 8 students who were randomly selected and assessed their acceptance in terms of usefulness, and ease of use and their satisfaction with using the developed videos. There were 5 validators

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Garbutt, Jane M., Joseph Grailer, Lillie Levin, et al. "4484 The Entrepreneurship for Biomedicine (E4B) Training Program." Journal of Clinical and Translational Science 4, s1 (2020): 68. http://dx.doi.org/10.1017/cts.2020.225.

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OBJECTIVES/GOALS: Regardless of their career choices, today’s biomedical researchers need to blend great science with core skills ininnovation and entrepreneurship (I&E). The objective of this NIH-funded education program was to develop and test a pragmatic training program to teach relevant I&E skills. METHODS/STUDY POPULATION: We used a modified Delphi approach to identify 15 relevant competencies for I&E and the essential topics to include in the program. Learner interviews identified preferences for online training programs (short, high-quality audio-visual content, ability to

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Wittmann, Frieder, Olivier Lambercy, and Roger Gassert. "Magnetometer-Based Drift Correction During Rest in IMU Arm Motion Tracking." Sensors 19, no. 6 (2019): 1312. http://dx.doi.org/10.3390/s19061312.

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Real-time motion capture of the human arm in the home environment has many usecases, such as video game and therapy applications. The required tracking can be based onoff-the-shelf Inertial Measurement Units (IMUs) with integrated three-axis accelerometers, gyroscopes,and magnetometers. However, this usually requires a homogeneous magnetic field to correctfor orientation drift, which is often not available inside buildings. In this paper, RPMC (RestPose Magnetometer-based drift Correction), a novel method that is robust to long term drift inenvironments with inhomogeneous magnetic fields, is p

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Li, Danling, Sichen Xia, and Kai Guo. "Using AI to enhance digital multimodal composing: EFL learners’ semiotic decision-making, self-efficacy, enjoyment, and continuance intention." Language Learning & Technology, July 7, 2025, 1–15. https://doi.org/10.64152/10125/73636.

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Research has demonstrated various advantages of integrating digital multimodal composing (DMC) into the teaching and learning of English as a foreign language (EFL). However, challenges persist, particularly due to the labor-intensive nature of multimodal production. As artificial intelligence (AI) technologies evolve, they provide valuable opportunities to enhance DMC, particularly through innovations like text-to-video generation. This study implemented an AI-enhanced approach to DMC in an academic English course, where students utilized AI-powered text-to-video technology to convert technic

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Jorre de St Jorre, Trina, Liz Johnson, and Gypsy O’Dea. "Me in a Minute." ASCILITE Publications, May 12, 2024, 117–20. http://dx.doi.org/10.14742/apubs.2017.753.

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Graduates require evidence of employability beyond marks and grades to differentiate themselves in the highly competitive labour market. Universities cannot guarantee employment, but they can engage students in learning and recognise achievement that is relevant to employment. Here, we share preliminary insights from interviews investigating student perceptions of an extra-curricular video strategy designed to develop and showcase graduate employability. The Me in a Minute video strategy provides students with support to film a one minute video pitch aimed at potential employers. Student perce

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Tammany, Justin E., Dennis G. O’Connell, Sarah E. Latham, Jordan A. Rogers, and Taylor S. Sugar. "The effect of grunting on overhead throwing velocity in collegiate baseball pitchers." International Journal of Sports Science & Coaching, April 7, 2021, 174795412110053. http://dx.doi.org/10.1177/17479541211005359.

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The purpose of this study was to determine the effect of grunting on overhead throwing velocity in collegiate baseball pitchers. A repeated-measures experimental design was used. Twenty-four division III collegiate baseball pitchers with a mean age of 20.3 ± 1.6 years voluntarily participated in the study. Subjects were shown a video demonstration of a pitcher grunting during the acceleration phase of pitching and asked to replicate the technique during three practice throws. Corrective verbal feedback from researchers was given regarding the timing of the grunt during practice throws. Subject

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Crotin, Ryan L., Ximena R. Iniguez, and Erin M. Carlson. "Proximal Chain Strength and Coordination Concepts to Maximize Injury Protection and Transfer of Training Effects for Competitive Baseball Players." Strength & Conditioning Journal, August 14, 2023. http://dx.doi.org/10.1519/ssc.0000000000000796.

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ABSTRACT Proximal injuries involving the core, intercostal musculature, and spine are the third leading cause of playing time loss in professional baseball. Long seasons and rotational unilaterality from hitting, throwing, and pitching exposes athletes to overuse risks, including disc herniation, spondyloses, spondylosis, facet joint syndromes, and pars lumbar fractures. This article describes injury epidemiology, rotational biomechanics including energy transfer dynamics, and offers injury prevention insights with minimal equipment. Ultimately, the goal of this article is to provide concepts

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Ballard, Christopher G., Kurt S. Anderson, and Leik Myrabo. "Flight Dynamics and Simulation of Laser Propelled Lightcraft." Journal of Computational and Nonlinear Dynamics 4, no. 4 (2009). http://dx.doi.org/10.1115/1.3187214.

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A seven degree-of-freedom (7DOF) dynamic model was developed to provide insight into the flight behavior of Type 200 and other related lightcraft, and to serve as a research tool for developing future engine-vehicle configurations for laser launching of nanosatellites (1–10+kg). Accurate engine, beam, and aerodynamics models are included to improve the predictive capability of the 7DOF code. The aerodynamic forces of lift, drag, and aerodynamic pitching moment were derived from FLUENT® computational fluid dynamics predictions, and calibrated against limited existing wind tunnel data. To facili

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Ghorbani, Saeed, Frerk Schuster, Martin Hillebrecht, and Andreas Bund. "EFFECT OF OBSERVING DIFFERENT MODEL DEMONSTRATIONS ON THE DEVELOPMENT OF INTERNAL MOTOR REPRESENTATION." GYMNASIUM XVII, no. 2 (2017). http://dx.doi.org/10.29081/gsjesh.2016.17.2.04.

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This study was designed to investigate the relative effects of observing video, point-light, and stick-figure model demonstrations on the development of internal motor representation of a highly complex sport skill. Forty one novice female and male students were randomly assigned to video, point-light, stick-figure and no-demonstration control groups. Internal motor representation was evaluated by a computer - based test using the error detection paradigm. Participants had to view ten digital photos representing different phases of a Baseball pitching and were instructed to identify by mouse-c

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"Projection Mapping: Interactive Operation using Kinect." International Journal of Recent Technology and Engineering 8, no. 4 (2019): 9307–13. http://dx.doi.org/10.35940/ijrte.d9492.118419.

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Recently “entertainment computing” (EC) technology becomes a hit term in Japan. There is a well-known “projection mapping” in this EC. Projection mapping is a video technique that synchronizes real space and virtual space, and the fascinating world view that the fusion of both produces attracts worldwide attention. On the other hand, recently, works combining dancer performance with projection mapping to create a fantastic world are drawing attention. However, in order to make the content persuasive, it is necessary for the performer to perform precise work, such as accurate alignment of the i

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Combes, Stacey A., Nick Gravish, and Susan F. Gagliardi. "Going against the flow: bumblebees prefer to fly upwind and display more variable kinematics when flying downwind." Journal of Experimental Biology 226, Suppl_1 (2023). http://dx.doi.org/10.1242/jeb.245374.

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ABSTRACT Foraging insects fly over long distances through complex aerial environments, and many can maintain constant ground speeds in wind, allowing them to gauge flight distance. Although insects encounter winds from all directions in the wild, most lab-based studies have employed still air or headwinds (i.e. upwind flight); additionally, insects are typically compelled to fly in a single, fixed environment, so we know little about their preferences for different flight conditions. We used automated video collection and analysis methods and a two-choice flight tunnel paradigm to examine thou

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Bakrania, Smitesh. "Toying With Engineering: Teaching Engineers to Be Entrepreneurial by Developing a Toy." Entrepreneurship Education and Pedagogy, July 15, 2021, 251512742110290. http://dx.doi.org/10.1177/25151274211029010.

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Most engineering design projects focus primarily on the engineering fundamentals. Studying the business case or manufacturability of a design is often left for other courses, if at all. To address this gap, an existing mechanical engineering course project was modified by embedding the interdependent entrepreneurial dimensions. In the past, junior engineering students developed a reciprocating air engines over two semesters. The modified project extended the engineering fundamentals into an entrepreneurial venture. To accomplish this, students were asked to propose an air engine toy for middle

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Lin Zhou. "Aerodynamic Characteristics and Trajectory Analysis of Badminton Shuttlecocks." Acta of Bioengineering and Biomechanics 26, no. 4 (2024). https://doi.org/10.37190/abb-02508-2024-01.

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Purpose This study aimed to investigate the aerodynamic characteristics and trajectory behavior of badminton shuttlecocks, focusing on the effects of design factors such as porosity, flexibility, and feather geometry on flight performance. The main research question was how shuttlecock design influences aerodynamic forces and resulting trajectories. Methods Wind tunnel tests were conducted on two feather and two synthetic shuttlecocks to measure drag, lift, and pitching forces across speeds of 10-50 m/s and angles of 0°-20°. Empirical correlations for drag and lift coefficients were derived vi

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Freehill, Michael, Edawrd Dopkowski, William Workman, et al. "Poster 381: Biomechanical Risk Factors for Ulnar Collateral Ligament Injury and the Ability to Readily Recognize Them." Orthopaedic Journal of Sports Medicine 12, no. 7_suppl2 (2024). http://dx.doi.org/10.1177/2325967124s00346.

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Objectives: Three biomechanical traits which are concerning for potential injury to the ulnar collateral ligament (UCL) in baseball players include: the Tommy John Twist, an open front (landing) foot position, and early swinging gate (opening) of the hips. Our objective was first to determine if these risk factors were more commonly found in those who had undergone an ulnar collateral ligament reconstruction (UCLR) versus controls and second to determine if viewing standard video and/or broadcast video would allow a predictable identification of these three factors. Our hypothesis was the thre

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Loughran, Galvin J., Ian Hollyer, Kevin Helenius, Michael Heffner, and Michael T. Freehill. "Arthroscopic Debridement and Resection of a Bennett Lesion in a Collegiate Baseball Pitcher." Video Journal of Sports Medicine 4, no. 5 (2024). http://dx.doi.org/10.1177/26350254241266288.

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Background: Overhead throwing athletes are predisposed to ossification along the superior to inferior posterior glenoid rim, termed thrower's exostosis or a Bennett lesion. These lesions can result in posterior shoulder pain during throwing and decreased shoulder range of motion, and they can be associated with posterior labral tears and undersurface rotator cuff tears. In this video technique, we describe the arthroscopic debridement and resection of a symptomatic unstable Bennett lesion in a collegiate baseball pitcher who had unsuccessful nonoperative treatment. Indications: Currently, ther

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Rotman, Dani, Jae-Man Kwak, Jorge Rojas Lievano, et al. "Radial Head Lag: A Possible Biomechanical Mechanism for Osteochondritis Dissecans of the Capitellum in Baseball Pitchers." American Journal of Sports Medicine, September 15, 2021, 036354652110339. http://dx.doi.org/10.1177/03635465211033971.

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Background: Osteochondritis dissecans (OCD) of the capitellum is common in throwing athletes and is believed to result from repetitive overloading on the radiocapitellar (RC) joint, although the cause and mechanism remain unclear. The torsional forces (moments) generated by the triceps during elbow extension pull only on the ulna; therefore, the radial head moves passively across the capitellum and is effectively “dragged along” by the ulna. Any laxity in the proximal radioulnar joint could lead to asynchronous motion between the radius and ulna, resulting in the radial head lagging behind the

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Haque, Mohammad Nasirul, Bo Cheng, Bret Tobalske, and Haoxiang Luo. "Active wing-pitching mechanism in hummingbird escape maneuvers." Bioinspiration & Biomimetics, August 11, 2023. http://dx.doi.org/10.1088/1748-3190/acef85.

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Abstract Previous studies suggested that wing pitching, i.e., the wing rotation around its long axis, of insects and hummingbirds is primarily driven by an inertial effect associated with stroke deceleration and acceleration of the wings and is thus passive. Here we considered the rapid escape maneuver of hummingbirds who were initially hovering but then startled by the frontal approach of a looming object. During the maneuver, the hummingbirds substantially changed their wingbeat frequency, wing trajectory, and other kinematic parameters. Using wing kinematics reconstructed from high-speed vi

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Glover, Bridgette. "Alternative Pathway to Television: Negotiating Female Representation in Broad City’s Transition from YouTube to Cable." M/C Journal 20, no. 1 (2017). http://dx.doi.org/10.5204/mcj.1208.

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IntroductionFor both consumers and creators, Web series have been viewed for some time as an appealing alternative to television series. As Alice explains, creating content for the Web was once seen as “a last resort” for projects that were unable to secure funding for television production (59). However, the Web has, in recent years, become a “legitimized” space, allowing Web series to be considered a media platform capable of presenting narratives of various genres (Alice 59). Moreover, due to the lack of restrictions and overheads placed on Web producers, it is argued that there is more cap

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