Marcel Fouda Ndjodo

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A virtual workflow specification is a formal description of business process in the real world and whose execution is done in a virtual organisation. Workflows are activities that involve the coordinated execution of multy tasks performed by different processing entities. Among the processing entities are human resources. These latter belong to an(More)
In our previous work on business process, we have provided the foundation for formalization based on the environment concept. The environment is defined as a set of observers whose values change according to the actions of tasks. From their values, observers are grouped to form a set of states. A state is defined as the characteristic of an environment from(More)
In this paper, we define a new business process modeling approach based on the abstraction of the execution environment which is presented as a set of observers. The triggering condition of a task is linked to the state of the environment rather than a predefined order between tasks as suggested by other modeling approaches. Relying on the environment and(More)
Purpose – In the field of information systems, workflow modelling has attracted a lot of researchers. Most works in the domain do not take into consideration the concrete execution of resulting workflows. This failure puts beside the time and resource concepts. The aim of this paper is to develop a model that allows to deal with the execution of workflows(More)
FORM, which was developed at Pohand University of Science and Technology (POSTECH) in South Korea, is a systematic method that looks for and captures commonalities and variabilities of a product line in terms of “features”. The results of the analysis are used to develop reusable product line assets (architectures and components). This method includes(More)
FROM/BCS is a promising product line engineering method which has the advantage of integrating variability in software development diagrams or models and to explicitly give variants of variation points. This approach has been proposed to allow transposition of industrial chain production to software world. However, to come closer to the real reduction of(More)
The management of requirement is as complex as there are misunderstanding between designers and end users. To tackle this complexity, we present a business rules specification framework. This approach is defined in an incremental manner. The formalism to specify business rules is first defined for the definition of the basic model, this model is then(More)
This paper introduces basic concepts describing a hierarchical algebraic structure called multisorted tree algebra. This structure is constructed by placing multisorted algebra at the bottom of a hierarchy and placing at other intermediate nodes the aggregation of algebras placed at their immediate subordinate nodes. These constructions are different from(More)
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