Nonlinear Dynamic Analysis on Dual-Rotor-Bearing-Casing System for Marine Gas Turbine by Zhikai Xing, Qiang Wang, Yongbao Liu, Mo Li, Xin Zhang

“…To alleviate the vibration jump phenomenon, the radial clearance should be reduced to improve the coupling between the high- and low-pressure rotors. …”
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Hydraulic performance of a pre-aerated stilling basin: Experimental study. by Yu Zhou, Tengzhi Huang, Ke Xu, Jiakai Mei, Siwei Jia, Qiaoni Yu, Jinglin Qian

“…Spillway chutes are critical in dam flood control, particularly in high dams where high water heads and large discharge in narrow canyons amplify the demand for safe discharging. …”
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Surgical outcomes in patients with Achilles tendon rupture—a retrospective study by Hüseyin Kürüm, Hacı Bayram Tosun, Faruk Aydemir, Orhan Ayas, Kübra Orhan Kürüm, Funda İpekten

“…FHL-A can be utilized in addition to primary surgical intervention in individuals with high performance expectations before and after injury.…”
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Females have Lower Knee Strength and Vertical Ground Reaction Forces During Landing than Males Following Anterior Cruciate Ligament Reconstruction at the Time of Return to Sport by Zachary B. Sullivan, Barrie S. Sugarman, Mallory S. Faherty, Carrie Killelea, Dean C. Taylor, Daniel Le, Alison P. Toth, Jonathan C. Riboh, Lee H. Diehl, Jocelyn R. Wittstein, Annunziato Amendola, Timothy C. Sell

“…# Purpose There is a high rate of second anterior cruciate ligament (ACL) injury (ipsilateral graft or contralateral ACL) upon return-to-sport (RTS) following ACL reconstruction (ACLR). …”
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Monitoring the physical fitness of students aged 10-15 and 15-18 during online education by Olena Nesen, Lesia Korobeinikova, Iryna Ivanyshyn, Olga Goncharova

“…For example, there is a high correlation (0.95) between the results of the standing long jump and physical fitness in higher grades. …”
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Reliability of Critical Fitness Tests for Police Officers by João Daniel Freitas, Sérgio Antunes Ramos, Luís Miguel Massuça

“…In this methodological study, 122 cadets from the Portuguese Police Academy participated and carried out the fitness protocol (horizontal jump, handgrip strength, 60 s of sit-ups, and 20 m shuttle run tests) in two moments (test–retest), separated by one week (seven days). …”
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The effect of the Covid pandemic on stock market volatility: Separating initial impact from time-to-recovery by Jin Zeng, Yijia Zhang, Yun Yin, Peter G Moffatt

“…We develop an extension to the GARCHX model - named GARCHX-NL - that captures a key stylized fact for stock market return data seen during the COVID-19 pandemic: an abrupt jump in volatility at the onset of the crisis, followed by a gradual return to its precrisis level. …”
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Numerical Simulation of Dynamic Response Characteristics of Cutting Coal and Rock by a Roller Coal Cutter by Kesong Fan, Yutong Feng, Ruoyang Kong, Hua Wei, Wenlong Jiao, Chenghao Fu, Yunsen Zhou

“…The torque from high to low is as follows: sandstone, mudstone, and coal. …”
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A New Concept Proposal of the Tidal Level Designed for the Security of Coastal Levee during Storm Surge — Taking the Lingdingyang Estuary as an Example by LI Bin, HE Yong, FANG Shenguang

“…Based on the analysis of the design frequency tidal levels,storm surge water increase and flood inflow upstream of control stations in Lingdingyang Estuary over years,it showed that the tidal levels of designed frequency of 0.5%~2.0% raised from 0.2 to 1.0 m in recent years,the extreme storm surge elevations exceed 2.5 m commonly,and the current tidal level difference of adjacent design frequency was less than 0.2 m.During the emergence of the extreme storm surge elevation in the estuary flood upstream would not be appeared simutaneously,while the moderate tide was most likely encounterred.Therefore,there were some problems in the application of design frequency tidal levels in estuarine waters,such as the small tidal level difference between adjacent frequencies,the severe frequency jump of tide level during strong typhoon,and the failure to directly reflect the leading role of the extreme storm surge elevation in the elevation design of coastal levee.The concept of the tidal levels designed for storm surge security of coastal levee was proposed in the paper,which were composed of multi-year average high tidal level and the maximum extreme storm surge elevation,clearly and easily to be used.It highlights the main role played by coastal levee to resist the disaster by strong storm surge.The calculated values were close to and slightly more than the designed tidal levels of 100~200 year return period of main stations in the mouth of Lingdingyang estuary,Shiziyang water area and delta river network area after reviewed in 2020,proving its safety and reliability.The reviewed tidal levels of designed frequency in the Chiwan station in 2020 were likely too high by analysis preliminarily.The tidal level designed for storm surge security of coastal levee could be widely used in reinforcement design,safety risk assessment in storm surge and storm surge disaster warning and response.…”
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Dynamic Contagion of Systemic Risks on Global Main Equity Markets Based on Granger Causality Networks by Qiuhong Zheng, Liangrong Song

“…The causal relationships among different global stock markets exhibit a jump growth when each major crisis occurs. The contagion path is also short. …”
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An Electromechanical Pendulum Robot Arm in Action: Dynamics and Control by A. Notué Kadjie, P. R. Nwagoum Tuwa, Paul Woafo

“…It is found that the device exhibits period-n T oscillations and high amplitude oscillations when the electric current is at its smallest value. …”
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Guard Dogs to Protect Sheep Grazing in Fenced Pastures Against Wolf: a New and Still Challenging Practice by Baptiste Potet, Charles-Henri Moulin, Michel Meuret

“…It may be appropriate sometimes to allow guard dogs to cross fences, so that they do not have to wait for wolves to jump or dig underneath. But in a densely populated and frequented country such as France, allowing protection by dogs on the periphery of fenced pastures faces a high risk of conflict with other land users. …”
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Optical memory and counter using a graphene based hybrid plasmonic temporal integrator by Faezeh Bahrami-Chenaghlou, Amir Habibzadeh-Sharif, Afshin Ahmadpour

“…Furthermore, the performance of these INTs has been evaluated in detail as a high-speed optical memory and counter. It has been illustrated that due to the greater quality factor of the GHP-PRR, this circuit has more accuracy for realizing the first-order integration, optical memory, and counter than the GHP-ADRR-based INT.…”
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Correlation between physical, technical and tactical dimensions in under-20 category football players by Patrick Alan de Souza Pfeiffer, Júlio César Gomes da Silva, Eric de Lucena Barbosa, Rodrigo Wanderley de Sousa-Cruz, Luciano de Oliveira, Rodrigo Benevides Ceriani, Gilmário Ricarte Batista

“…Results and Conclusions Findings show that there are medium correlations between the technical-tactical and physical-tactical variables, as well as a high correlation between the technical-physical variables. …”
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Socio-economic transformations in the Baltic countries by Natalia V. Govorova

“…Rising cost of living, poverty and social exclusion have become the most significant problems for the population in recent years. A sharp jump in inflation at the turn of the 2020s has led to a deeper cost of living crisis than the European Union average. …”
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A Critique on Growth Studies and Analysis on the Shock Resistance of Iran’s Growth Rate in the Context of Resistance Economy by Seyyed Shamseddin Hosseini

“…Results of the paper show that the shock of oil sector has made the economic growth unstable due to its high dependency to foreign countries as a result of governmental supply monopoly, demand monopoly and the U.S. sanctions on Iran oil exports.…”
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Crisis risk in the 21st century and their impact on the banking sector by Vesić Tamara, Petronijević Jovan, Ravić Nenad

“…It was concluded that the Serbian banking sector has consistently submitted to the moratorium introduced by the NBS, most likely as a consequence of high liquidity and capital adequacy in previous periods. …”
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Des chiens pour protéger contre les loups des brebis en parcs clôturés : une pratique nouvelle et encore problématique by Baptiste Potet, Charles-Henri Moulin, Michel Meuret

“…It may be appropriate sometimes to allow guard dogs to cross fences, so that they do not have to wait for wolves to jump or dig underneath. But in a densely populated and frequented country such as France, allowing protection by dogs on the periphery of fenced pastures faces a high risk of conflict with other land users. …”
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Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam by Shuai Liu, Ke Yang, Chunan Tang, Xiaolou Chi

“…The key prevention and control areas of the workface were found to be related to the disturbed high-level immediate roof rupture during the lower slice mining process, rupture of the disturbed main roof, and sliding of disturbed overburden. …”
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Twinning and stacking fault-induced precipitation in an aluminum alloy by Yabo Fu, Vahid Yousefi Mehr, Mohammad Reza Toroghinejad, Xizhang Chen, Jinchuan Jie, Shijie Zhu

“…Detailed precipitation investigations have been conducted using high-resolution TEM. The results show that the Al, Mn, and Si elements segregate to form precipitates with complex crystal structures at different locations such as triple junctions. …”
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