265 citations · 3.7k across the 158 of their papers we have counts for
9 papers · 1 filter
Adjustable reach in a network centrality based on current flows
Aleks J. Gurfinkel, Per Arne Rikvold
Centrality, which quantifies the "importance" of individual nodes, is among the most essential concepts in modern network theory. Most prominent centrality measures can be expresse…
Absorbing Random Walks Interpolating Between Centrality Measures on Complex Networks
Aleks J. Gurfinkel, Per Arne Rikvold
Centrality, which quantifies the "importance" of individual nodes, is among the most essential concepts in modern network theory. As there are many ways in which a node can be impo…
Centrality Fingerprints for Power Grid Network Growth Models
Aleks Jacob Gurfinkel, Daniel A. Silva, Per Arne Rikvold
In our previous work, we have shown that many of the properties of the Florida power grid are reproduced by deterministic network growth models based on the minimization of energy…
A Universal Lifetime Distribution for Multi-Species Systems
Yohsuke Murase, Takashi Shimada, Nobuyasu Ito +1
Lifetime distributions of social entities, such as enterprises, products, and media contents, are one of the fundamental statistics characterizing the social dynamics. To investiga…
Architecture of the Florida Power Grid as a Complex Network
Yan Xu, Aleks Jacob Gurfinkel, Per Arne Rikvold
We study the Florida high-voltage power grid as a technological network embedded in space. Measurements of geographical lengths of transmission lines, the mixing of generators and…
Modeling power grids
P. A. Rikvold, I. Abou Hamad, B. Israels +1
We present a method to construct random model power grids that closely match statistical properties of a real power grid. The model grids are more difficult to partition than a rea…
Floridian high-voltage power-grid network partitioning and cluster optimization using simulated annealing
Ibrahim Abou Hamad, Per Arne Rikvold, Svetlana V. Poroseva
Many partitioning methods may be used to partition a network into smaller clusters while minimizing the number of cuts needed. However, other considerations must also be taken into…
Spectral matrix methods for partitioning power grids: Applications to the Italian and Floridian high-voltage networks
Ibrahim Abou Hamad, Brett Israels, Per Arne Rikvold +1
Intentional islanding is used to limit cascading power failures by isolating highly connected "islands" with local generating capacity. To efficiently isolate an island, one should…
Waiting-time distribution for a stock-market index
Jae Woo Lee, Kyoung Eun Lee, Per Arne Rikvold
We investigate the waiting-time distribution of the absolute return in the Korean stock-market index KOSPI. We define the waiting time as a time interval during which the normalize…