Abstract

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A new type of stochatstic grammars is introduced tor inw~stigation: weakly restricted stochastic grammars. In this p~Lper we will concentrate oil the consistcl,cy prol)lcnt. ~1'o find conditions for stoch~stlc gramma.rs to be consistm~t, the theory of multitype Galton-Watson branciting processes and gelmrating functions is of central ilnporl,~utce. The unrestricted stochastic grammar formalism generates the s~tme class of langu~gcs as the wc~kly rcstricl.cd for malisln, q'}te inside-outside algorithm is adapt.cd for use with weakly restricted granlmars.

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In this article, we present a solution to digital rights management (DRM) for electronic publishing and document management services provided by a third-party application service provider (ASP). We identify legal requirements that service providers have to guarantee with respect to DRM. We elaborate on related technological requirements and implement specific DRM service components compliant with the Open Digital Rights Language (ODRL) standard. Moreover, we show how digital rights of document content can be specified and subsequently enforced using ODRL. We conclude by discussing legal implications of technological innovation-for example, the conflicts that may arise between digital rights enforcement and privacy protection measures, and how it is possible to resolve them.

Abstract:The Rapid Service Development (RSD) metholology defines an integrated, model-based approach for quickly and efficiently developing e-business services, with a focus on business-to-business transactions. This paper shows how RSD is applied in a pilot project to develop a web-based application for selling interior products. In the project Tapestria, an e-marketplace that sells interior fabrics to the U.S. market, is extended to support the sale of rugs. We show how RSD is applied to identify and develop business roles, processes, functions and transactions. Also, the next step of the software design for the (web-based) front office and back office is covered. The paper is concluded with an evaluation of the development process.