Results 81 to 90 of about 1,765,804 (200)

Diagnostic testing for earnings simulation engines in the Australian electricity market [PDF]

, 2009
This study has endeavoured to propose and implement a series of diagnostic tests to determine the appropriateness of electricity simulation engines (ESEs) for generating electricity load and price paths to be used as input in the determination of a ...
Chiarella, Carl, Stevenson, Max, Svec, Jiri   +2 more
core  

Isostatic phase transition and instability in stiff granular materials

, 1998
In this letter, structural rigidity concepts are used to understand the origin of instabilities in granular aggregates. It is shown that: a) The contact network of a noncohesive granular aggregate becomes exactly isostatic in the limit of large stiffness-
A. Coniglio, B. Miller, C. Liu, C. Moukarzel, C. Moukarzel, Cristian F. Moukarzel, E. Guyon, F. Radjai, H. M. Jaeger, Henry Crapo, J. Hemmingsson, M. Ammi, M. Nicodemi, P. Claudin, P. Claudin, P. Dantu, P. Dantu, S. N. Coppersmith, S. Ouaguenouni, S. Ouaguenouni, S. Roux, T. S. Tay   +21 more
core   +1 more source

A study on power supply restoration strategy considering flexible resource regulation ability

Engineering Reports
The rapid development of new energy technology can make this type of energy the primary power source in the future. However, new energy power generation is considerably affected by the environment, resulting in intermittent and fluctuating ...
Xuefeng Liu, Fuguo Jin, Feng Guo, Jiwei Yang, Xiaoyi Qian, Dejin Feng   +5 more
doaj   +1 more source

Free-Vibration and Buckling Analyses of Beams using Kriging-Based Timoshenko Beam Elements with the Discrete Shear Gap Technique

Civil Engineering Dimension
A family of locking-free Kriging-based Timoshenko beam elements with a new implementation of the discrete shear gap technique was recently developed (referred to as K-beam-DSG1 elements). Performance of the K-beam-DSG1 elements has been shown to be very
Foek Tjong Wong, Nelvin Tanoyo, Tonny C. Gosaria   +2 more
doaj   +1 more source

Terrestrial acidification and ecosystem services: effects of acid rain on bunnies, baseball, and Christmas trees

Ecosphere, 2017
Often termed “acid rain,” combined nitrogen and sulfur deposition can directly and indirectly impact the condition and health of forest ecosystems. Researchers use critical loads (CLs) to describe response thresholds, and recent studies on acid‐sensitive
Irina C. Irvine, Tara Greaver, Jennifer Phelan, Robert D. Sabo, George Van Houtven   +4 more
doaj   +1 more source

Regional variation in growth and survival responses to atmospheric nitrogen and sulfur deposition for 140 tree species across the United States

Frontiers in Forests and Global Change
Atmospheric deposition of nitrogen (N) and sulfur (S) alter tree demographic processes via changes in nutrient pools, soil acidification, and biotic interactions.
Rebecca M. Dalton, Jesse N. Miller, Tara Greaver, Robert D. Sabo, Kemen G. Austin, Jennifer N. Phelan, R. Quinn Thomas, R. Quinn Thomas, Christopher M. Clark   +8 more
doaj   +1 more source

Accuracies of southwell and force/stiffness methods in the prediction of buckling strength of hypersonic aircraft wing tubular panels [PDF]

Accuracies of the Southwell method and the force/stiffness (F/S) method are examined when the methods were used in the prediction of buckling loads of hypersonic aircraft wing tubular panels, based on nondestructive buckling test data.
Ko, William L.
core   +1 more source

Numerical Simulation Analysis of Influencing Factors of Buckling Stability of Deep Sea Ball Valve

Shiyou jixie, 2017
To ensure that the deep sea ball valve does not appear local or overall buckling failure under differential pressure and other external loads, the influence factors of buckling stability of deep sea ball valve have been studied.
Li Shuxun, Luo Xiangyao, Lei Yan, Zhang Lifang   +3 more
doaj  

Aspects of uncertainty in total reactive nitrogen deposition estimates for North American critical load applications. [PDF]

Sci Total Environ, 2019
Walker JT, Bell MD, Schwede D, Cole A, Beachley G, Lear G, Wu Z.   +6 more
europepmc   +1 more source

Cardiorespiratory and metabolic determinants during moderate and high resistance exercise intensities until exhaustion using dynamic leg press: comparison with critical load. [PDF]

Braz J Med Biol Res, 2018
Arakelian VM, Goulart CL, Mendes RG, Caruso FC, Baldissera V, Arena R, Borghi-Silva A.   +6 more
europepmc   +1 more source