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- Chou, S. K., et al.
(author)
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Priority areas at the frontiers of ecology and energy
- 2018
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In: ECOSYSTEM HEALTH AND SUSTAINABILITY. - : TAYLOR & FRANCIS INC. - 2096-4129 .- 2332-8878. ; 4:10, s. 243-246
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Journal article (peer-reviewed)abstract
- The complexity of economic development and humanitarian crises means that energy science and technology should be involved in actions that address almost every major challenges of ecosystem health and sustainability. Energy is the engine of the world economy and the key to ecosystems' functioning, which also has a great impact on global warming. The energy crisis, environmental pollution, overuse of natural resources, water supply shortages, global climate disruption, and deteriorating ecosystems are major challenges to address in order to achieve the United Nations Sustainable Development Goals (SDGs). In light of the frontiers in energy sciences and disruptive innovation in eco-tech, we recognize the need to review and establish working mechanisms that identify and examine issues that are critical to future sustainable development, to offer advice to decision-makers in different social sectors (public and private), to secure a shared future for mankind, and to achieve shared prosperity and common interests through international communications and collaborations.
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| 3. |
- Vågberg, Daniel, et al.
(author)
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Pressure distribution and critical exponent in statically jammed and shear-driven frictionless disks
- 2014
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In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics. - 1539-3755 .- 1550-2376. ; 89:2, s. 022201-
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Journal article (peer-reviewed)abstract
- We numerically study the distributions of global pressure that are found in ensembles of statically jammed and quasistatically sheared systems of bidisperse, frictionless disks at fixed packing fraction phi in two dimensions. We use these distributions to address the question of how pressure increases as phi increases above the jamming point phi(J), p similar to |phi - phi(J) |(y). For statically jammed ensembles, our results are consistent with the exponent y being simply related to the power law of the interparticle soft-core interaction. For sheared systems, however, the value of y is consistent with a nontrivial value, as found previously in rheological simulations.
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| 4. |
- Wu, Yegang, et al.
(author)
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Search for hyperuniformity in mechanically stable packings of frictionless disks above jamming
- 2015
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In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics. - : American Physical Society. - 1539-3755 .- 1550-2376. ; 92:5
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Journal article (peer-reviewed)abstract
- We numerically simulate mechanically stable packings of soft-core, frictionless, bidisperse disks in two dimensions, above the jamming packing fraction phi(J). For configurations with a fixed isotropic global stress tensor, we investigate the fluctuations of the local packing fraction phi(r) to test whether such configurations display the hyperuniformity that has been claimed to exist exactly at phi(J). For our configurations, generated by a rapid quench protocol, we find that hyperuniformity persists only out to a finite length scale and that this length scale appears to remain finite as the system stress decreases towards zero, i.e., towards the jamming transition. Our result suggests that the presence of hyperuniformity at jamming may be sensitive to the specific protocol used to construct the jammed configurations.
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