Results 11 to 20 of about 32,803 (265)

Density and temperature profiles after low-Z and high-Z shattered pellet injections on DIII-D

Nuclear Fusion, 2023
In this work we utilize the recently upgraded Thomson scattering diagnostic to resolve density and temperature plasma profiles after pure deuterium and mixed neon/deuterium shattered pellet injections (SPIs) on DIII-D.
A. Lvovskiy, A. Matsuyama, T. O’Gorman, D. Shiraki, J.L. Herfindal, E.M. Hollmann, C. Marini, R. Boivin, N.W. Eidietis, M. Lehnen   +9 more
doaj   +1 more source

Mitigating Routing Misbehavior in Disruption Tolerant Networks [PDF]

IEEE Transactions on Information Forensics and Security, 2012
In disruption tolerant networks (DTNs), selfish or malicious nodes may drop received packets. Such routing misbehavior reduces the packet delivery ratio and wastes system resources such as power and bandwidth. Although techniques have been proposed to mitigate routing misbehavior in mobile ad hoc networks, they cannot be directly applied to DTNs ...
Qinghua Li, Guohong Cao
openaire   +1 more source

Mitigation of Flooding Disruption Attacks in Hierarchical OLSR Networks [PDF]

2011 Ninth Annual Communication Networks and Services Research Conference, 2011
The Hierarchical Optimized Link State Routing (HOLSR) protocol was designed to improve scalability of heterogeneous Mobile Ad-Hoc Networks (MANETs). HOLSR is derived from the OLSR protocol and implements Multipoint Relay (MPR) nodes as a flooding mechanism for distributing control information.
Cervera, Gimer, Barbeau, Michel, Garcia Alfaro, Joaquin, Kranakis, Evangelos   +3 more
openaire   +1 more source

Mitigation of disruptions by fast helium gas puffs

Nuclear Fusion, 2001
In order to mitigate the effect of disruptions in tokamaks, it is proposed to inject quickly a relatively large amount of helium; first experiments on this topic have been performed on TEXTOR. For this purpose, a fast valve has been developed which releases 10 mbar L of helium gas within 1 ms; the valve is located at a vessel flange such that a fast ...
Finken, K.H., Mank, G., Kramer-Flecken, A., Jaspers, R.   +3 more
openaire   +2 more sources

Development of the upgraded single crystal dispersion interferometer (SCDI-U) and its first measurements of the line integrated electron densities in KSTAR during shattered pellet injections

Nuclear Fusion, 2023
Dispersion interferometers (DI) are widely used to measure line integrated electron densities in many fusion devices. A recent development of a heterodyne single crystal DI (SCDI) with a laser wavelength of 1064   nm (Lee et al 2021 Rev. Sci. Instrum. 92
Dong-Geun Lee, Kwan Chul Lee, J.-W. Juhn, Jae-seok Lee, Jayhyun Kim, SooHwan Park, Michael Lehnen, Yong-Hwa Park, Jae-Hak Jeong, Jaebeom Yim, Y.-C. Ghim   +10 more
doaj   +1 more source

Comparing Mitigation Strategies for Supply Chain under Operational Disruptions Using Monte Carlo Simulation [PDF]

Port Said Engineering Research Journal, 2021
Although supply chain disruptions have been under study since the 1990’s, they attracted more attention last year due to the COVID-19 pandemic. Not only researchers, but all people realized how disruptions can negatively affect the performance of ...
Raghda Taha, Amin El-Kharbotly, Yomna Sadek   +2 more
doaj   +1 more source

The constraint of plasma power balance on runaway avoidance

Nuclear Fusion, 2023
In a post-thermal-quench plasma, mitigated or unmitigated, the plasma power balance is mostly between collisional or Ohmic heating and plasma radiative cooling.
Christopher J. McDevitt, Xian-Zhu Tang, Christopher J. Fontes, Prashant Sharma, Hyun-Kyung Chung   +4 more
doaj   +1 more source

Blast disruption using 3D grids/perforated plates for vehicle protection

Defence Technology, 2023
In this work, blast disruption and mitigation using 3D grids/perforated plates were tested for underbelly and side protection of vehicles. Two vehicle simulants were used: a small-scale one for side vehicle protection assessment and a true-to-scale ...
Thérèse Schunck, Dominique Eckenfels, Laurent Sinniger   +2 more
doaj   +1 more source

A global analysis of coastal flood risk to the petrochemical distribution network in a changing climate

Resilient Cities and Structures, 2022
The global petroleum distribution network already faces a significant threat of disruption due to annual coastal flooding of major refining centers, which is expected to further increase with the effects of climate change.
Kendall M. Capshaw, Jamie E. Padgett
doaj   +1 more source

Disruption tails and post-disruption instability mitigation in the supply chain

IFAC-PapersOnLine, 2019
Abstract We study the coordination effects of production and ordering policies in the supply chain (SC) that experiences capacity disruptions and recovery. Discrete-event simulation methodology is used for analysis with real company data and real disruptions.
Dmitry Ivanov, Maxim Rozhkov
openaire   +1 more source