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This article provides an overall view of available techniques for integrating Petri-nets and object-oriented concepts. In order to outline specific characteristics, all identified techniques will be grouped into three categories. For each of these categories, one representative technique will be selected as well as demonstrated using the example of a simple(More)
The mobile agent paradigm can be employed effectively for the decentralized management of complex networks. Nevertheless, legacy management protocols such as SNMP need to be supported for reasons of migration and efficiency. We show how the integration of the two paradigms leads to a flexibly adjustable decentralized management architecture. NetDoctor is a(More)
The effects of growth conditions, trace metals, carbon and nitrogen source on ochratoxin A (OTA) production by Aspergillus ochraceus NRRL 3174 were investigated in submerged liquid culture medium. No correlation between biomass production and OTA synthesis was observed. OTA production depended on the initial pH and was influenced by changing the pH of the(More)
This chapter aims to address some of the fundamental issues that are often encountered in optimization problems, making them difficult to solve. We explain why these issues make optimization problems hard to solve and present some possible countermeasures for dealing with them. By doing this, we hope to help both practitioners and fellow researchers to(More)
AIMS The objective of this study was to evaluate the capability of Fusarium culmorum to produce non-hydrophobin surface-active proteins in vitro, to isolate and characterize such proteins from liquid cultures, to analyse their effect on overfoaming (gushing) of beer and to elucidate their prevalence in pure cultures and infected malt. METHODS AND RESULTS(More)
In this paper we introduce a new approach for genetic programming, called rule-based genetic programming, or RBGP in short. A program evolved in the RBGP syntax is a list of rules. Each rule consists of two conditions, combined with a logical operator, and an action part. Such rules are independent from each other in terms of position (mostly) and(More)