October 2005 | Volume 3 | Issue 10 | e347 | e353 Viewed under a microscope, the coronavirus appears almost beautiful, thanks to the halo-like crown formed by its surface proteins. (“Corona” means “crown” in Latin.) Aesthetics aside, this genus of viruses is responsible for a wide range of animal and human diseases, from the common cold to the deadly severe acute respiratory syndrome, familiarly...

This paper explores the steady-state properties and the dynamic behavior of a generalization of the classical cobweb model. Under fairly general demand and cost functions, producers form naïve expectations about future prices and select their output so as to maximize expected profits. Unlike the traditional setup, producers have the choice between two markets, and tend to enter that which was m...

Based on a nonlinear demand function and market-clearing price, cobweb model is introduced in this paper. A gradient mechanism that depends the marginal profit adopted to form 1D discrete dynamic map. Analytical studies show map possesses four fixed points only one attains maximization. The stability/instability conditions for point are calculated numerically studied. numerical provide some ins...

The crystallization of a new macromolecule is still very much a trial and error process. In an e ort to uncover useful trends in the crystallization of new macromolecules, Samudzi, Fivash and Rosenberg[12] performed a cluster analysis on the Biological Macromolecule Crystallization Database(BMCD)[7]. The crystallization parameters that were studied in order to di erentiate among the experiments...