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Fioretti, Guido - In: Physica A: Statistical Mechanics and its Applications 374 (2007) 2, pp. 707-714

The productions function maps the inputs of a firm or a productive system onto its outputs. This article expounds generalizations of the production function that include state variables, organizational structures and increasing returns to scale. These extensions are needed in order to explain...

Persistent link: https://www.econbiz.de/10010872862

Gradually truncated log-normal in USA publicly traded firm size distribution

Gupta, Hari M.; Campanha, José R.; Aguiar, Daniela R. de; … - In: Physica A: Statistical Mechanics and its Applications 375 (2007) 2, pp. 643-650

We study the statistical distribution of firm size for USA and Brazilian publicly traded firms through the Zipf plot technique. Sale size is used to measure firm size. The Brazilian firm size distribution is given by a log-normal distribution without any adjustable parameter. However, we also...

Persistent link: https://www.econbiz.de/10010589966

Do larger firms have more interfirm relationships?

Saito, Yukiko Umeno; Watanabe, Tsutomu; Iwamura, Mitsuru - In: Physica A: Statistical Mechanics and its Applications 383 (2007) 1, pp. 158-163

In this study, we investigate interfirm networks by employing a unique data set containing information on more than 800,000 Japanese firms, about half of all corporate firms currently operating in Japan. First, we find that the number of relationships, measured by the indegree, has a fat-tail...

Persistent link: https://www.econbiz.de/10011062293

On the size distribution of firms: additional evidence from the G7 countries

Gaffeo, Edoardo; Gallegati, Mauro; Palestrini, Antonio - In: Physica A: Statistical Mechanics and its Applications 324 (2003) 1, pp. 117-123

We analyze the average size distribution of a pool of the G7 group's firms over the period 1987–2000. In particular, firm sizes are measured employing different proxies, and after conditioning on business cycle phases. We find that: (i) the empirical distributions are all consistent with a...

Persistent link: https://www.econbiz.de/10011062912

Robustness of cooperation in memory-based prisoner’s dilemma game on a square lattice

Ren, Guangming; Wang, Xingyuan - In: Physica A: Statistical Mechanics and its Applications 408 (2014) C, pp. 40-46

Cooperation in prisoner’s dilemma game can be promoted significantly by introducing memory effects. In this work, we … numerically investigated robustness of cooperation by introducing an attack probability, with which an individual in cooperation … vanishment of the cooperators. Our work could be helpful to understand the emergence of cooperation in systems consisting of …

Persistent link: https://www.econbiz.de/10010872905

Mixed strategy and coevolution dynamics in social networks

Zhong, Weicai; Abbass, Hussein A.; Bender, Axel; Liu, Jing - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 2, pp. 410-417

We investigate coevolution dynamics of both individual strategies and social ties as they adapt within the snowdrift game with mixed strategies. We propose a partner selection mechanism based on the concept of trust. Here trust is considered an instrument for an individual both selecting the...

Persistent link: https://www.econbiz.de/10010873413

Promotion of cooperation induced by the interplay between structure and game dynamics

Fu, Feng; Chen, Xiaojie; Liu, Lianghuan; Wang, Long - In: Physica A: Statistical Mechanics and its Applications 383 (2007) 2, pp. 651-659

random from the neighbors of the punished agent. It is found that the promotion of cooperation is attributed to the entangled … extensive numerical simulations. Our results to some extent reflect the underlying mechanism promoting cooperation. …

Persistent link: https://www.econbiz.de/10010873458

Spatial social dilemmas: Dilution, mobility and grouping effects with imitation dynamics

Vainstein, Mendeli H.; Arenzon, Jeferson J. - In: Physica A: Statistical Mechanics and its Applications 394 (2014) C, pp. 145-157

We present an extensive, systematic study of the Prisoner’s Dilemma and Snowdrift games on a square lattice under a synchronous, noiseless imitation dynamics. We show that for both the occupancy of the network and the (random) mobility of the agents there are intermediate values that may...

Persistent link: https://www.econbiz.de/10010873543

Motif structure and cooperation in real-world complex networks

Salehi, Mostafa; Rabiee, Hamid R.; Jalili, Mahdi - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 23, pp. 5521-5529

important in many applications. The cooperation between selfish individuals is one of the most interesting collective phenomena …. In this paper we address the interplay between the motifs’ cooperation properties and their abundance in a number of real …

Persistent link: https://www.econbiz.de/10010873697

Adoption of different strategies in diversity-optimized populations promotes cooperation

Sun, Lei; Yang, Dong-Ping - In: Physica A: Statistical Mechanics and its Applications 394 (2014) C, pp. 158-165

evolution of cooperation. In the prisoner’s dilemma game, the whole population which adopts different strategies against …

Persistent link: https://www.econbiz.de/10010873803