A Current Analysis of Black Head Football Coaches and Offensive Coordinators at the NCAA DI-FBS Level by Robert Turick, Trevor Bopp

“…The findings of our study, which were interpreted using racial tasking (Bopp & Sagas, 2014) as our theoretical lens, found that a) Black representation at the head coach and offensive coordinator position has plateaued, b) White head coaches statistically have higher winning percentages than their Black counterparts, c) White head coaches are afforded nearly a year more on average than Black head coaches to lead their programs, and d) that White offensive coordinators tend to manage more prolific passing teams (e.g., attempts, yards, and touchdowns) than their Black counterparts. The performance of Black coaches compared with their White counterparts has not favored Black coaches which may create prejudice in the mind of athletic administrators. …”
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Analysis of Vibration Attenuation and Energy Consumption of Blasting Demolition Chimney: A Case Study by Shuren Wang, Jiyun Zhang, Jingtao Li, Fuli Kong, Junqi Fan

“…However, the blasting vibration and the touchdown vibration of the parts of the chimney falling to the ground will cause noise disturbance to the local residents. …”
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Decreased Performance and Return to Play Following Anterior Cruciate Ligament Reconstruction in National Football League Wide Receivers by Colin J. Burgess, D.O., Erik Stapleton, D.O., M.S., Kenneth Choy, B.A., Cesar Iturriaga, M.D., Randy M. Cohn, M.D.

“…Those that RTP also saw decreased performance statistics in targets (353.6 vs 125.2 P < .001), receptions (208.0 vs 74.4, P = .001), receiving yards (2691.0 vs 987.9, P = .001), and touchdowns (17.4 vs 6.2, P = .002). Conclusions: Sixty-nine percent of wide receivers who underwent ACL reconstruction were able to RTP at an average of 10.9 months, or 331.4 days. …”
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Return to Play After Mini-Open Repair of Achilles Tendon Ruptures in the NFL Athlete by Stephen Greenfield MD, Robert Anderson MD

“…Average yards per run/catch, attempts per game, number of 20+ yard plays and touchdowns were recorded. Data was analyzed with Welch’s method 2-Sample t test in Minitab. …”
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Outcome of Turf Toe Injuries in NFL Players by Selene G. Parekh MD, MBA, FAOA, Tejas J. Parekh

“…The performance of each offensive skill player was analyzed separately by calculating their power rating (total yards divided by 10 plus touchdowns multiplied by 6) for the 3 seasons prior to injury, the injury season (index season) and the 2 seasons immediately following. …”
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Variations of the surface characteristics of Ryugu returned samples by Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean-Pierre Bibring, Cedric Pilorget, Vincent Hamm, Rosario Brunetto, Lucie Riu, Lionel Lourit, Damien Loizeau, Tania Le Pivert-Jolivet, Guillaume Lequertier, Aurelie Moussi-Soffys, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Sei-ichiro Watanabe, Yuichi Tsuda

“…Abstract Hayabusa2 spacecraft successfully collected rock samples from the surface of C-type near-Earth asteroid 162173 Ryugu through two touchdowns and brought them back to Earth in 2020. At the Extraterrestrial Sample Curation Center in JAXA, we performed initial description of all samples to obtain fundamental information and prepare the database for sample allocation. …”
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Adaptive discretisation and dual-rate time-stepping of mooring cable dynamics by Low, Chee Meng, Ng, Eddie Yin-Kwee, Narasimalu, Srikanth, Chua, Kie Hian, Kim, Youngkook

“…The numerical modelling of touchdown/liftoff effects requires a finer discretisation at the touchdown point to avoid the production of spurious line tension fluctuations. …”
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Development of an Autoland System for General Aviation Aircraft by Siegel, Diana, Hansman, R. John

“…The performance of the final design is evaluated in simulation in terms of touchdown point dispersion, sink rate and attitude on touchdown.…”
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Development of an autoland system for general aviation aircraft by Siegel, Diana

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Skipping on uneven ground: trailing leg adjustments simplify control and enhance robustness by Roy Müller, Emanuel Andrada

“…To drive the model, the following parameters were estimated from nine subjects skipping across a single drop in ground level: leg lengths at touchdown, leg stiffness of both legs, aperture angle between legs, trailing leg angle at touchdown (leg landing first after flight phase), and trailing leg retraction speed. …”
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An Influence of Trench Formation on Steel Catenary Risers Based on a Hysteretic Nonlinear Seabed Model by Reza Siahtiri, Abdolrahim Taheri

“…A steel catenary riser (SCR) attached to a floating platform at its upper end encounters fluctuations in and near its touchdown zone (TDZ), which causes the interaction with the seabed. …”
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Bumblebees land remarkably well in red–blue greenhouse LED light conditions by Lana J. de Vries, Frank van Langevelde, Coby van Dooremalen, Ilse G. Kornegoor, Martin J. Lankheet, Johan L. van Leeuwen, Marc Naguib, Florian T. Muijres

“…In both conditions, the landing approaches were interspersed by one or several hover phases, followed by leg extension and touchdown. The time between leg extension and touchdown was 25% (0.05 s) longer in red–blue light than in white light, caused by a more tortuous flight path in red–blue light. …”
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Equivalent running leg lengths require prosthetic legs to be longer than biological legs during standing by Janet H. Zhang-Lea, Joshua R. Tacca, Owen N. Beck, Paolo Taboga, Alena M. Grabowski

“…We calculated standing and running BioL and ProsL lengths and assessed the running-to-standing leg length ratio (Lratio) at three instances during ground contact: touchdown, mid-stance, and take-off. Athletes with UTTA had 2.4 cm longer standing ProsL than BioL length (p = 0.030), but their ProsL length were up to 3.3 cm shorter at touchdown and 4.1 cm shorter at mid-stance than BioL, at 3–11.5 m/s. …”
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Evaluation and mitigation of modelling errors in numerical simulations of mooring line and seabed contact by Low, Chee Meng

“…Specifically, the modelling of line touchdown-liftoff effects requires a finer mooring line discretisation at the touchdown point to avoid the production of spurious line tension fluctuations. …”
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‘Whip from the hip’: thigh angular motion, ground contact mechanics, and running speed by Kenneth P. Clark, Christopher R. Meng, David J. Stearne

“…During high-speed running, lower limb vertical velocity at touchdown has been cited as a critical factor needed to generate large vertical forces. …”
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Impacts of Flight Operations on the Risk of Runway Excursions by Feiyin Wang, Jintong Yuan, Xiaochen Liu, Pengtao Wang, Mao Xu, Xiaoyu Li, Hang Li

“…A total of 2087 flights were classified on the basis of touchdown distance, taxiing distance, and magnetic heading changes and were divided into three styles based on these indicators. …”
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Posture alteration as a measure to accommodate uneven ground in able-bodied gait. by Soran Aminiaghdam, Reinhard Blickhan, Roy Muller, Christian Rode

“…Two-way repeated measures ANOVAs revealed step-specific effects of posture on the kinematic behavior of gait mostly at toe-off of the pre-perturbation step and the step-down as well as at touchdown of the step-up. In preparation to step-down, with increasing trunk flexion the discrepancy in hip-center of pressure distance, i.e. effective leg length, (shorter at toe-off versus touchdown), compared with level steps increased largely due to a greater knee flexion at toe-off. …”
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Comparative Analysis of the Diagonal Stride Technique during Roller Skiing and On-Snow Skiing in Youth Cross-Country Skiers by Mujia Ma, Shuang Zhao, Ting Long, Qingquan Song, Hans-Christer Holmberg, Hui Liu

“…The hip movement, knee flexion, and calf anteversion at ski/roller ski touchdown and take-off, pole inclination at pole touchdown, body anteversion angle, and trunk anteversion angle at pole touchdown were the points that required caution when transferring preseason practice roller skiing to on-snow skiing.…”
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Insights into the formation and evolution of extraterrestrial amino acids from the asteroid Ryugu by Christian Potiszil, Tsutomu Ota, Masahiro Yamanaka, Chie Sakaguchi, Katsura Kobayashi, Ryoji Tanaka, Tak Kunihiro, Hiroshi Kitagawa, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Eizo Nakamura

“…Amino acid concentrations from 2 particles returned from different touchdown sites on the surface of Ryugu are reported. …”
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Landing stability analysis for lunar landers using computer simulation experiments by Yuanyuan Liu, Shunguang Song, Ming Li, Chunjie Wang

“…In the overall design and performance prediction of spacecrafts intended to accomplish soft landing on the moon, touchdown dynamics analysis during the landing phase is one of the most important tasks. …”
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