The rate-limiting step of some enzymatic reactions is a physical step, i.e. diffusion. The efficiency of such reactions can be improved through an increase in the arrival rate of the substrate molecules, e.g. by a directed passage of substrate (ligand) to active site after its random encounter with the enzyme surface. Herein, we introduce a cellular automata model simulating the ligand passage ...

A new model based on a combination of the polymeric multigrain and multilayer models has been developed to predict the polymerization rate, particle growth, morphology, effective parameters on broadening of the molecular weight distribution, number and weight average of the molecular weight, isotacticity index and bulk density of polymer. Mathematical correlations and the kinetics used in t...

a new model based on a combination of the polymeric multigrain and multilayer models has been developed to predict the polymerization rate, particle growth, morphology, effective parameters on broadening of the molecular weight distribution, number and weight average of the molecular weight, isotacticity index and bulk density of polymer. mathematical correlations and the kinetics used in this ...

Design patterns are recognized, named solutions to common design problems. The use of the most commonly referenced design patterns should promote adaptable and reusable program code. When a system evolves, changes to code involving a design pattern should, in theory, consist of creating new concrete classes that are extensions or subclasses of previously existing classes. Changes should not, in...

This article is concerned mainly with the software aspects of building reliable and efficient services on a cluster of workstations. A key technology to achieve such a goal is service replication. However, designing and implementing a replication system is a very difficult task. Based on an active replication model, this paper focuses on an objectoriented design pattern to simplify the design a...

3-D object recognition involves using image-computable features to identify 3-D object. A single view of a 3-D object may not contain sufficient features to recognize it unambiguously. One needs to plan different views around the given object in order to recognize it. Such a task involves an active sensor – one whose parameters (external and/or internal) can be changed in a purposive manner. In...

Argument structure patterns can be used to represent classes of safety arguments. Such patterns can become quite complex, making use of loops and choices, posing a potential challenge for comprehension and evaluation, offsetting the likely gains that might follow from creating arguments using them. We show how complex patterns can be constructed by composition of simpler patterns. We provide a ...