Showing 161 - 180 results of 265 for search 'BASE jumping', query time: 0.06s Refine Results
  1. 161

    Free Vibration Analysis of the Unified Functionally Graded Shallow Shell with General Boundary Conditions by Dongyan Shi, Shuai Zha, Hong Zhang, Qingshan Wang

    Published 2017-01-01
    “…The formulation is based on the first-order shear deformation theory (FSDT) and Rayleigh-Ritz technique. …”
    Get full text
    Article
  2. 162

    Biomechanics of Heading a Soccer Ball: Implications for Player Safety by Charles F. Babbs

    Published 2001-01-01
    “…To better understand the risk and safety of heading a soccer ball, the author created a set of simple mathematical models based upon Newton�s second law of motion to describe the physics of heading. …”
    Get full text
    Article
  3. 163

    Study on Ground Collapse of Covered Karst Soil Caves by Sudden Drop of Groundwater by Xuejun Chen, Ruijian Guo, Lingming Tang, Xiaochen Zhang

    Published 2021-01-01
    “…In this study, the ellipsoidal soil cave with vertical collapses in the covering karst area is studied. Based on certain assumptions, the mechanical model of karst collapse caused by groundwater drop was established. …”
    Get full text
    Article
  4. 164

    FIFA'S Medical Research Centre Program Exercise Prevent Football Athlete Injury Among Unimuda Sorong by Waskito Aji Suryo Putro, Wahyu Retno Widiyaningsih, Witri Suwanto, Saiful Anwar

    Published 2025-01-01
    “…However, football players are often injured due to collisions and errors in landing after jumping. Some factors that increase the occurrence of injuries are poor balance, and poor running speed. …”
    Get full text
    Article
  5. 165

    Motivational variables and their relationship with health determinants in physical education students by Diego Esteban Torres, Alberto Abarca Sos, Raúl Baños, Berta Murillo Pardo

    Published 2024-12-01
    “… The aim of this study was to evaluate whether a specific training program based on the individual force-velocity (FV) profile would decrease the FVimb (i.e., difference between the players’ actual and optimal profile) and, in turn, improve countermovement jump (CMJ) and change of direction (COD) performance. …”
    Get full text
    Article
  6. 166

    Research on Acoustic Emission and Electromagnetic Emission Characteristics of Rock Fragmentation at Different Loading Rates by Fujun Zhao, Yu Li, Zhouyuan Ye, Yong Fan, Siping Zhang, Haifan Wang, Yonghong Liu

    Published 2018-01-01
    “…The relationships among the generation of acoustic emission, electromagnetic emission, and the fracture stress of rock grain are investigated, which are based on the mechanism of acoustic emission and electromagnetic emission produced in the process of indenting rock. …”
    Get full text
    Article
  7. 167

    Movement Analysis of DIMAS SAPUTRA Smash with Kinovea in the West Kalimantan Regional KAPOLDA CUP I Volleyball Final by Muhammad Suhairi, Ade Rahmat, Rajidin, Syaparudin, Yuyun Rusmita

    Published 2023-08-01
    “…Biomechanics is a branch of science that studies the forms and types of human movement based on mechanical principles in a sport that can minimize the occurrence of sports injuries. …”
    Get full text
    Article
  8. 168

    The Effectiveness of Trunk and Balance Warm-up Exercises in Prevention, Severity, and Length of Limitation From Overuse and Acute Lower Limb Injuries in Male Volleyball Players by Yuki Muramoto, Hironobu Kuruma

    Published 2022-10-01
    “…Research has shown the effectiveness of exercise-based warm-up interventions for acute volleyball injuries. …”
    Get full text
    Article
  9. 169

    Modelling and in vivo evaluation of tendon forces and strain in dynamic rehabilitation exercises: a scoping review by Antonio I Cuesta-Vargas, Adrian Escriche-Escuder, Jose Casaña

    Published 2022-07-01
    “…Fourteen studies used an indirect methodology based on inverse dynamics, nine of them in the Achilles and five in the patellar tendon. …”
    Get full text
    Article
  10. 170

    The Effect of Six Weeks of Core Stability Training on Balance and Performance Improvement Among Male Taekwondo Athletes by Ebrahim Ebrahimi, Somayeh Mozafari

    Published 2024-08-01
    “…Participants were selected based on judgment sampling and randomly divided into two groups of 15 each. …”
    Get full text
    Article
  11. 171

    Specific Physical Performances of Young Male Basketball Players in Palestine: An Assessment by Maturity Status by Layla Jawabreh, Mohamed Tounsi, Ghazi Racil, Johnny Padulo, Gian Mario Migliaccio, Luca Russo, Yassine Trabelsi

    Published 2025-01-01
    “…The players were categorized by age groups (U-12 to U-16) and divided into five maturational groups based on their maturity offset, ranging from −1.5 to 2.5 years relative to peak height velocity (PHV). …”
    Get full text
    Article
  12. 172

    A supervised model to identify wolf behavior from tri-axial acceleration by Charlotte Lorand, Léa Bouet, Olivier Devineau, Marianna Chimienti, Alina L. Evans, Peggy Callahan, Mark Beckel, Timothy G. Laske, Ane Eriksen

    Published 2025-01-01
    “…We investigated the potential limits to the generalizability of these models to unlabeled data through individual-based cross-validation. Results We present: (1) a model classifying fine-scale acceleration data (32 Hz) into 12 distinct behaviors (lying, trotting, stationary, galloping, walking, chewing, sniffing, climbing, howling, shaking, digging and jumping) with a class recall of 0.77–0.99 (0.01–0.91 in cross-validation), (2) a model classifying activity data (5-min averages) into 3 behavior categories (static, locomotion and miscellaneous) with a class recall of 0.43–0.91 (0.39–0.92 in cross-validation). …”
    Get full text
    Article
  13. 173

    Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf by Pengfei Jiang, Peng Xiao, Fanbao Meng, Suolin Jing, Jingkai Zhang, Ge Wang, Peng Zhao

    Published 2020-01-01
    “…Within the allowable range of reading error, the results showed that the maximum displacement of medium-deep base point and shallow base point of two roadways was 15.2 cm and 10.9 cm, respectively; the pressure value had a more obvious jump increase when the distance between each measuring point and the working face was about 35 m, which means the range is strongly affected by the advance mining, and the area affected by advanced mining was 35 m ahead of the working face. …”
    Get full text
    Article
  14. 174
  15. 175

    INVARIAN AUTOMATIC CONTROL SYSTEM, USING THE INTERMEDIATE-FREQUENCY SIGNALS OF HEAT POWER PARAMETERS by G. T. Kulakov, A. N. Kukhorenko, I. M. Golinko

    Published 2015-03-01
    “…This method allow to increase essential system speed in processing of task jump and to reduce operation time of outside external disturbance up to two  values of regulated influence, and the usage of invariance principle is based on an additional measuring of the most dangerous perturbation influence and in connection with it the improvement of regulation quality is achieved.In this article the principle of invariance is applied in order to improve greatly external disturbance attack by consumption of over-heated steam. …”
    Get full text
    Article
  16. 176

    Detection of the Effect of Climate Change on the Mechanism of Heat Islands in Tehran Province by Niloofar Mohammadi, Zahra Hejazizadeh, Parviz Zeaiean Firouzabadi, Alireza Karbalaee

    Published 2024-03-01
    “…Examining the trend of the temperature time series with Mann-Kendall test of all stations showed an increasing trend, in the exam of the rainfall time series of the stations (Abali, Shemiran and Mehrabad) in the months of October and November, it was accompanied by sudden changes and jumps, which due to the increase in extreme events It is justifiable. in the HadGEM3 model according to the SSP5 scenario; The temperature forecast of Mehrabad station during the period (2060 to 2021) has shown the highest temperature compared to the base period in July with a 5% increase; And the most rainy period is projected to early autumn and winter in the period (2021-2060). …”
    Get full text
    Article
  17. 177

    Policies Affecting the Efficiency of Beef Production in Alberta: A Supply Chain Analysis by Derek Brewin

    Published 2024-06-01
    “…In the past 30 years, the average beef producer’s operating margin has never reached $50,000, despite the fact that the average beef farm’s asset base stands at more than $2 million. Better access to export markets, including the U.S., South Asia and North Africa, would help to remedy the producers poor returns. …”
    Get full text
    Article
  18. 178

    A Systemic Approach to Inceptive Constructions in Lithuanian by Rolandas Mikulskas

    Published 2023-12-01
    “…The judgments on the entrenchment of the inceptive markers were mainly based on the number of hits of the constructions they underlie in the register. …”
    Get full text
    Article
  19. 179

    EFFECTS OF RAREFIED GAS FLOW ON VELOCITY BOUNDARY AND TEMPERATURE CHARACTERISTICS OF AEROSTATIC GUIDE WAY by LONG Wei, GONG Ling, YANG ShaoHua

    Published 2018-01-01
    “…The most outstanding characteristics is shown as velocity slip and temperature jump. Based on LBM,velocity and temperature distribution in the radial direction can be achieved. …”
    Get full text
    Article
  20. 180

    Stability Analysis of Networked Control Systems with Random Time Delays and Packet Dropouts Modeled by Markov Chains by Li Qiu, Fengqi Yao, Xiaopin Zhong

    Published 2013-01-01
    “…This paper investigates the stability analysis problem for a class of discrete-time networked control systems (NCSs) with random time delays and packet dropouts based on unified Markov jump model. The random time delays and packet dropouts existed in feedback communication link are modeled by two independent Markov chains; the resulting closed-loop system is described by a new Markovian jump linear system (MJLS) with Markov delays. …”
    Get full text
    Article