Apollo 17 regolith, 71501,262: A record of impact events and mare volcanism in lunar glasses

2009 ◽  
Vol 44 (6) ◽  
pp. 839-851 ◽  
Author(s):  
N. E. B. ZELLNER ◽  
J. W. DELANO ◽  
T. D. SWINDLE ◽  
F. BARRA ◽  
E. OLSEN ◽  
...  
Keyword(s):  
Mare Volcanism ◽  
Impact Events

scholarly journals Algorithmic Pricing and Price Gouging. Consequences of High-Impact, Low Probability Events

2021 ◽  
Vol 13 (5) ◽  
pp. 2542
Author(s):  
Juan Manuel Sánchez-Cartas ◽  
Alberto Tejero ◽  
Gonzalo León
Keyword(s):  
Algorithm Design ◽  
High Impact ◽  
Design Features ◽  
Market Conditions ◽  
External Market ◽  
Contestable Markets ◽  
Terror Attacks ◽  
Low Probability ◽  
Price Gouging ◽  
Impact Events

Algorithmic pricing may lead to more efficient and contestable markets, but high-impact, low-probability events such as terror attacks or heavy storms may lead to price gouging, which may trigger injunctions or get sellers banned from platforms such as Amazon or eBay. This work addresses how such events may impact prices when set by an algorithm and how different markets may be affected. We analyze how to mitigate these high-impact events by paying attention to external (market conditions) and internal (algorithm design) features surrounding the algorithms. We find that both forces may help in partially mitigating price gouging, but it remains unknown which forces or features may lead to complete mitigation.

scholarly journals Protective Capacity of Ice Hockey Helmets against Different Impact Events

2016 ◽  
Vol 44 (12) ◽  
pp. 3693-3704 ◽  
Author(s):  
J. Michio Clark ◽  
Andrew Post ◽  
T. Blaine Hoshizaki ◽  
Michael D. Gilchrist
Keyword(s):  
Ice Hockey ◽  
Protective Capacity ◽  
Impact Events

A hybrid model of the CO 2 geochemical cycle and its application to large impact events

1986 ◽  
Vol 286 (5) ◽  
pp. 361-389 ◽  
Author(s):  
J. F. Kasting ◽  
S. M. Richardson ◽  
J. B. Pollack ◽  
O. B. Toon
Keyword(s):  
Hybrid Model ◽  
Large Impact ◽  
Geochemical Cycle ◽  
Impact Events

Low Velocity Impact Resistance of CPVC Pipes Exposed to Natural Outdoor Weathering Conditions

2012 ◽  
Vol 445 ◽  
pp. 959-964
Author(s):  
Z. Khan ◽  
Necar Merah ◽  
A. Bazoune ◽  
S. Furquan
Keyword(s):  
Impact Resistance ◽  
Outdoor Exposure ◽  
Impact Testing ◽  
Low Velocity Impact ◽  
Pipe Material ◽  
Low Velocity ◽  
Impact Energies ◽  
The Impact ◽  
Impact Events ◽  
Outdoor Weathering

Low velocity drop weight impact testing of CPVC pipes was conducted on 160 mm long pipe sections obtained from 4-inch (100 mm) diameter schedule 80 pipes. Impact test were carried out for the base (as received) pipes and after their exposure to out door natural weathering conditions in Dhahran, Saudi Arabia. The results of the impact testing on the natural (outdoor exposure) broadly suggest that the natural outdoor exposures produce no change in the impact resistance of CPVC pipe material for the impact events carrying low incident energies of 10 and 20J. At the impact energies of 35 and 50J the natural outdoor exposures appear to cause appreciable degradation in the impact resistance of the CPVC pipe material. This degradation is noted only for the longer exposure periods of 12 and 18 months.

scholarly journals LABORATORY OBSERVATIONS OF IMPACTS ON COARSE SEDIMENT BEACHES

2011 ◽  
Vol 1 (32) ◽  
pp. 53
Author(s):  
Ian Ball ◽  
Edgar Mendoza-Baldwin ◽  
David Simmonds ◽  
Adrián Pedrozo-Acuña ◽  
Dominic E Reeve
Keyword(s):  
Full Scale ◽  
Impact Pressure ◽  
Coarse Grained ◽  
Laboratory Measurements ◽  
Coarse Sediment ◽  
Full Scale Tests ◽  
The Impact ◽  
Impact Events ◽  
Plunging Breaker

In this paper we present laboratory observations of plunging wave breaker impact pressure responses on a steep coarse-grained beach, extending previous work conducted by Pedrozo-Acuña et al. (2008). Scale laboratory measurements of plunging breaker impact events are reported and compared with the previous full-scale tests. These tests extend the previous relationships to a wider range of surf-similarity parameters and indicate a continued reduction in impact pressure as the transition from plunging impacts to surging impacts is approached. Additional results from scale tests conducted on a smooth impermeable slope also indicate the presence of a maximum impact pressure within the plunging breaker region; however also suggest it may be necessary to include roughness and permeability in the parameterization of the impact pressure.

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