Results 11 to 20 of about 1,338,644 (306)

NbTi foil thermally controlled switches for superconducting converters with operation frequency up to 50 Hz. Part 1: Experiment [PDF]

, 1992
The increase of the operation frequency of superconducting converters up to 50 Hz opens new ways to improve their parameters. Thermally controlled switches using NbTi foil are able to operate at industrial frequency with reasonable efficiency and dynamic
Kate, H.H.J. ten, Markovsky, N.V., Mulder, G.B.J., Shevchenko, O.A.   +3 more
core   +8 more sources

Nonstationary Bandits with Habituation and Recovery Dynamics [PDF]

Operations Research, 2020
In many sequential decision-making settings where there is uncertainty about the reward of each action, frequent selection of specific actions may reduce expected reward while choosing less frequently selected actions could lead to an increase. These effects are commonly observed in settings ranging from personalized healthcare interventions and ...
Yonatan Mintz, Anil Aswani, Philip Kaminsky, Elena Flowers, Yoshimi Fukuoka   +4 more
openaire   +3 more sources

Hot Deformation Behavior and Microstructure Evolution of High-Strength Al-Zn-Mg-Cu Alloy

Metals, 2022
An isothermal compression experiment was conducted to study the rheological behavior of Al-4.57Zn-1.50Mg-1.92Cu high-strength aluminum alloy at strain rates ranging from 0.1 to 20 s−1 and temperatures in the range of 573 to 773 K.
Jun Cai, Lin Chen, Juan Yang, Wen Wang, Ben Ding, Qingxiang Yang, Ke Qiao, Kuaishe Wang   +7 more
doaj   +1 more source

Catastrophic dynamics limit Atlantic cod recovery [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2019
Collapses and regime changes are pervasive in complex systems (such as marine ecosystems) governed by multiple stressors. The demise of Atlantic cod ( Gadus morhua ) stocks constitutes a text book example of the consequences of overexploiting marine living resources, yet the drivers of these nearly synchronous ...
Camilla Sguotti, Saskia A. Otto, Romain Frelat, Tom J. Langbehn, Marie Plambech Ryberg, Martin Lindegren, Joël M. Durant, Nils Chr. Stenseth, Christian Möllmann   +8 more
openaire   +5 more sources

Role of Vanadium Addition on Hot Deformation Behavior of Aluminum Alloy 5083

Metals, 2019
The effect of V addition on the hot deformation behavior of AA5083 was investigated. Single axial compression tests were conducted on the cast and homogenized samples with strain rates ranging from 0.01 to 10 s−1 and deformation temperatures ...
Lijuan Wang, Xiangjie Wang, Xiao Zhu, Xin Xu, Jianzhong Cui, Bin Liao, Xiaodong Wang, Xiaodong Wu   +7 more
doaj   +1 more source

Some aspects of microstructure and properties of Al-Mg alloys after shear spinning and cold rolling [PDF]

Hemijska Industrija, 2013
Three commercial Al-Mg alloys containing 3 wt.% to 6 wt.% of Mg (AlMg3, AlMg4.5Mn and AlMg6Mn) were subjected to different forming processes: shear spinning and cold rolling.
Radović Ljubica M., Nikačević Milutin Z., Jordović Branka M.   +2 more
doaj   +1 more source

Fatigability and Recovery of Arm Muscles with Advanced Age for Dynamic and Isometric Contractions [PDF]

, 2013
This study determined whether age-related mechanisms can increase fatigue of arm muscles during maximal velocity dynamic contractions, as it occurs in the lower limb.
Hunter, Sandra K., Schlinder-Delap, Bonnie, Yoon, Tejin   +2 more
core   +2 more sources

Dynamic Social Networks in Recovery Homes [PDF]

American Journal of Community Psychology, 2013
AbstractAcute treatment aftercare in the form of sober living environments—i.e., recovery houses—provide an inexpensive and effective medium‐term treatment alternative for many with substance use disorders. Limited evidence suggests that house‐situated social relationships and associated social support are critical determinants of how successful these ...
Leonard A, Jason, John M, Light, Edward B, Stevens, Kimberly, Beers   +3 more
openaire   +2 more sources

Disturbance–recovery dynamics inform seafloor management for recovery

Frontiers in Ecology and the Environment, 2022
Over most of the world’s estuaries, coasts, and continental shelves, key indicators of seafloor biodiversity, anthropogenic stress, and ecological sustainability emphasize the need to shift habitat management and conservation from prevention of degradation to actions focused on ecological recovery.
Judi Hewitt, Rebecca Gladstone‐Gallagher, Simon Thrush   +2 more
openaire   +1 more source

Microstructure Evolution Behavior of Spray-Deposited 7055 Aluminum Alloy during Hot Deformation

Metals, 2022
The evolution behaviors of the second phase, substructure and grain of the spray-deposited 7055 aluminum alloy during hot compression at 300~470 °C were studied by scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) and ...
Di Feng, Rui Xu, Jichen Li, Wenjie Huang, Jingtao Wang, Ying Liu, Linxiang Zhao, Chengbo Li, Hao Zhang   +8 more
doaj   +1 more source