19,873 research outputs found
Exact Requirements Engineering for Developing Business Process Models
Process modeling is a suitable tool for improving the business processes.
Successful process modeling strongly depends on correct requirements
engineering. In this paper, we proposed a combination approach for requirements
elicitation for developing business models. To do this, BORE (Business-Oriented
Requirements Engineering) method is utilized as the base of our work and it is
enriched by the important features of the BDD (Business-driven development)
method, in order to make the proposed approach appropriate for modeling the
more complex processes. As the main result, our method eventuates in exact
requirements elicitation that adapts the customers' needs. Also, it let us
avoid any rework in the modeling of process. In this paper, we conduct a case
study for the paper submission and publication system of a journal. The results
of this study not only give a good experience of real world application of
proposed approach on a web-based system, also it approves the proficiency of
this approach for modeling the complex systems with many sub-processes and
complicated relationships.Comment: (IEEE) 3th International Conference on Web Researc
On the irreducible action of psl(2, r) on the 3-dimensional einstein universe
We describe the orbits of the irreducible action of PSL(2, R) on the
3-dimensional Einstein universe Ein 1,2. This work completes the study in [2],
and is one element of the classification of cohomo-geneity one actions on Ein
1,2 ([5])
Some Correlators of WZW Models on Higher-Genus Riemann Surfaces
Using the conformal embedding on the torus, we can express some characters of
in terms of characters. Then with the help of crossing
symmetry, modular transformation and factorization properties of Green
functions, we will calculate a class of correlators of on arbitrary
Riemann surfaces. This method can apply to all WZW models which can be
conformally embedded in some WZW models.Comment: 19 page
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