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Clusters or networks of economies? A macroeconomy study through Gross Domestic Product

Ausloos, M.; Lambiotte, R. - In: Physica A: Statistical Mechanics and its Applications 382 (2007) 1, pp. 16-21

We study correlations between web-downloaded gross domestic product (GDP)'s of rich countries. GDP is used as wealth signatures of the country economical state. We calculate the yearly fluctuations of the GDP. We look for forward and backward correlations between such fluctuations. The...

Persistent link: https://www.econbiz.de/10010873163

Towards a physics of Internet traffic in a geographic network

Baker, R.G.V. - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 4, pp. 1133-1148

A set of equations from a biased random walk are shown to describe the time-based Gaussian distributions of Internet traffic relative to the Earth’s time zones. The Internet is an example of a more general physical problem dealing with motion near the speed of light relative to different time...

Persistent link: https://www.econbiz.de/10010872056

Entropy correlation distance method. The Euro introduction effect on the Consumer Price Index

Miśkiewicz, Janusz - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 8, pp. 1677-1687

size and the corresponding statistical distance is defined. The results are compared with the the usual correlation … distance measure for the time series themselves. As an example this entropy correlation distance method (ECDM) is applied to … several series, as those of the Consumer Price Index (CPI) in order to test some so called globalisation processes. Distance …

Persistent link: https://www.econbiz.de/10011059447

Interpreting the concept of joint unpredictability of asset returns: A distance approach

Focker, Fulvia; Triacca, Umberto - In: Physica A: Statistical Mechanics and its Applications 369 (2006) 2, pp. 765-770

joint unpredictability in term of distance between information sets. We conclude that the joint unpredictability requires a …

Persistent link: https://www.econbiz.de/10011064388

Morphological similarity of road networks and cracks

Ohnishi, Teruaki; Okada, Osami; Shirakata, Hirofumi - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 18, pp. 4127-4133

An investigation was made regarding to what extent road network patterns are reproduced by a crack model from a viewpoint that they seem to resemble crack patterns in morphology. A desiccation model using double-layered cellular meshes was considered with the parameters representing the...

Persistent link: https://www.econbiz.de/10010873149

The sampling properties of Hurst exponent estimates

Ellis, Craig - In: Physica A: Statistical Mechanics and its Applications 375 (2007) 1, pp. 159-173

The classical rescaled adjusted range (R/S) statistic is a popular and robust tool for identifying fractal structures and long-term dependence in time-series data. Subsequent to Mandelbrot and Wallis [Water Resour. Res. 4 (1968) 909] who proposed the statistic be measured over several subseries...

Persistent link: https://www.econbiz.de/10010873288

Learning in innovation networks: Some simulation experiments

Gilbert, Nigel; Ahrweiler, Petra; Pyka, Andreas - In: Physica A: Statistical Mechanics and its Applications 378 (2007) 1, pp. 100-109

the market strongly selects on the results. The simulation experiments show the impact of different learning activities …

Persistent link: https://www.econbiz.de/10010873790

Analytical studies of CO2 emission in a mixed traffic flow with different vehicles

Li, Zhipeng; Chen, Lizhu; Xu, Shangzhi; Qian, Yeqing - In: Physica A: Statistical Mechanics and its Applications 413 (2014) C, pp. 320-328

In this paper, we investigate the CO2 emission in a traffic flow mixed with multi-class vehicles by use of an improved optimal velocity model with different vehicles. We explore numerically the dependence of the total CO2 emission rate and the additional CO2 emission on the variation of the...

Persistent link: https://www.econbiz.de/10010906999

A manipulator game model of urban public traffic network

Chang, Hui; Xu, Xiu-Lian; Hu, Chin-Kun; Fu, Chunhua; … - In: Physica A: Statistical Mechanics and its Applications 416 (2014) C, pp. 378-385

Urban public traffic networks are typical complex systems. Understanding their evolution mechanism attracts much attention in recent years. Here, we propose that the evolution of urban public traffic network can be considered as a game process between two network manipulators, i.e., passengers...

Persistent link: https://www.econbiz.de/10010939956

Transport in disordered interacting systems: numerical results for one-dimensional spinless electrons

Schreiber, Michael; Epperlein, Frank; Vojta, Thomas - In: Physica A: Statistical Mechanics and its Applications 266 (1999) 1, pp. 443-449

The combined influence of disorder and interactions on the transport properties of electrons in one dimension is investigated. The numerical simulations are carried out by means of the Hartree–Fock-based diagonalization, a very efficient method to determine the low-energy properties of a...

Persistent link: https://www.econbiz.de/10010871691