Agent Design of SmArt License Management System Using Gaia Methodology

Modern software services and data centers require a license management system to regulate the agreements that have been reached between subscriber and provider. License management helps to track usage and protect service from abuse. License agreements provide the basis for enforcement and regulation. The automation of license agreements is desired by providers and subscribers to improve transaction efficiency, give flexibility, and minimize unwanted cost. We have proposed a framework, called SmArt (Semantic Agreement) system, that enables agreement automation in the autonomic computing context using ontology and agent technologies. This paper applies the SmArt system to the domain of license management and presents its agent design with Gaia methodology

Policy Driven Licensing Model for Component Software

Today, it is almost inevitable that software is licensed, rather than sold outright. As a part of the licensing policy, some protection mechanisms, whether hardware, legal or code-based, are invariably built into the license. The application of such mechanisms has primarily been in the realm of off-the-shelf, packaged, consumer software. However, as component-based software gradually becomes mainstream in software development, new component-oriented licensing systems are required. This paper proposes an enterprise component licensing model for the management of software component licenses. The model provides a comprehensive license management framework allowing for extensibility and flexibility. Furthermore, we identify differences between stand-alone software and component software, describe a high level model for policy driven component licensing, and discuss both the benefits and drawbacks of the enterprise component licensing model for the management of software component licenses

Extreme case of Faraday effect: magnetic splitting of ultrashort laser pulses in plasmas

The Faraday effect, caused by a magnetic-field-induced change in the optical properties, takes place in a vast variety of systems from a single atomic layer of graphenes to huge galaxies. Currently, it plays a pivot role in many applications such as the manipulation of light and the probing of magnetic fields and material's properties. Basically, this effect causes a polarization rotation of light during its propagation along the magnetic field in a medium. Here, we report an extreme case of the Faraday effect where a linearly polarized ultrashort laser pulse splits in time into two circularly polarized pulses of opposite handedness during its propagation in a highly magnetized plasma. This offers a new degree of freedom for manipulating ultrashort and ultrahigh power laser pulses. Together with technologies of ultra-strong magnetic fields, it may pave the way for novel optical devices, such as magnetized plasma polarizers. In addition, it may offer a powerful means to measure strong magnetic fields in laser-produced plasmas.Comment: 18 pages, 5 figure