H. Eugene Stanley

TL;DR: In this paper, the authors study the statistics of the return intervals τ q between two consecutive return losses below a threshold − q, in various stocks, currencies and commodities, and find that the probability distribution function of τ q scales with the mean return interval τ q in a quite universal way, which may enable us to extrapolate rare events from the behavior of more frequent events with better statistics.

TL;DR: In this paper, the authors consider the conductance G between two arbitrarily chosen nodes where each link has the same unit resistance and predict a broad range of values of G, with a power-law tail distribution, where gG=2λ−1, where λ is the decay exponent for the scale-free network degree distribution.

TL;DR: This work defines two algorithms and provides theoretical results on the topological properties of these graphs associated with different types of real-value series and proposes a method to measure the systematic risk using the image-limited penetrable horizontal visibility graph.

TL;DR: In this paper, Raman spectra of macrotetrolide nactins are reported for crystalline nonactin, monactin and tetranactin in solution, and their conformations are found to be sufficiently open to permit the ester carbonyl groups to form hydrogen bonds with CH3OH; this gives rise to characteristic changes in the vibration frequencies associated with the esters groups.