Results 81 to 90 of about 13,897 (205)
The Generics Revolution and the New Economic Geography of the Global Pesticide Industry
Journal of Agrarian Change, EarlyView.ABSTRACT The global pesticide industry transformed from one dominated by patented products and legacy multinationals with strong manufacturing bases in the United States and EU to one dominated by generic products produced in India and China. We use proprietary market research data, data from regulatory filings, industry press and bilateral trade data ...
Christian Berndt +4 more
wiley +1 more source
Stability and Cycles in a Cobweb Model with Heterogeneous Expectations [PDF]
We investigate the dynamics of a cobweb model with heterogeneous beliefs, generalizing the example of Brock and Hommes (1997). We examine situations where the agents form expectations by using either rational expectations, or a type of adaptive ...
Clem Tisdell +2 more
core
Chaotic scattering in solitary wave interactions: A singular iterated-map description
, 2007 We derive a family of singular iterated maps--closely related to Poincare maps--that describe chaotic interactions between colliding solitary waves. The chaotic behavior of such solitary wave collisions depends on the transfer of energy to a secondary ...
Moser J., Roy H. Goodman
core +1 more source
Finding Stars: Mapping the Geography of the World's Scientific Elites
Transactions of the Institute of British Geographers, EarlyView.Short Abstract Scientific excellence is clustering ever more tightly in a few ‘superstar’ cities. Four—New York, Boston, London and the San Francisco Bay Area—now host 12% of the world's top scientists. In contrast, the Global South remains largely absent, with the notable exception of Beijing's dramatic rise.
Andrés Rodríguez‐Pose +2 more
wiley +1 more source
Fractal and FractionalIn this paper, we aim to solve the issue of pattern formation mechanisms in a spatiotemporally discrete activator–inhibitor model that incorporates self- and cross-diffusions.
You Li +4 more
doaj +1 more source
The Chaos Dynamic of Multiproduct Cournot Duopoly Game with Managerial Delegation
Discrete Dynamics in Nature and Society, 2014 Although oligopoly theory is generally concerned with the single-product firm, what is true in the real word is that most of the firms offer multiproducts rather than single products in order to obtain cost-saving advantages, cater for the diversity of ...
Fang Wu, Junhai Ma
doaj +1 more source
Biomechanics and Evolution of the Primate Tongue
Evolutionary Anthropology: Issues, News, and Reviews, Volume 35, Issue 2, June 2026.ABSTRACT Primate tongue morphology and function are critical to understanding the evolution of feeding, swallowing, and vocalization. In this paper, we examine the primate tongue as a muscular hydrostat with regionally specialized neuromuscular compartments. We integrate anatomical, kinematic, and biomechanical modeling approaches to analyze how muscle
Yeganeh Sekhavati +2 more
wiley +1 more source
Mathematical and Computational ApplicationsThis study investigates the dynamic behavior of an SIRS epidemic model in discrete time, focusing primarily on mathematical analysis. We identify two equilibrium points, disease-free and endemic, with our main focus on the stability of the endemic state.
Mohamed Cherif Belili +3 more
doaj +1 more source
Morphology transition at depinning in a solvable model of interface growth in a random medium
, 2013 We propose a simple, exactly solvable, model of interface growth in a random medium that is a variant of the zero-temperature random-field Ising model on the Cayley tree.
Ohta, Hiroki +2 more
core +3 more sources
Ecology and Evolution, Volume 16, Issue 5, May 2026.This review paper summarises the current knowledge on hybrids between blue and fin whales, from historical to contemporary observations, highlighting morphological and genetic identification across the world oceans. ABSTRACT Hybrids between blue (Balaenoptera musculus) and fin (B.
Christophe Pampoulie +6 more
wiley +1 more source