Dynamic bandwidth allocation with SLA awareness for QoS in ethernet passive optical networks

Quality-of-service (QoS) support in Ethernet passive optical networks is a crucial concern. We propose a new dynamic bandwidth allocation (DBA) algorithm for service differentiation that meets the service-level agreements (SLAs) of the users. The proposed delay-aware (DA) online DBA algorithm provides constant and predictable average packet delay and reduced delay variation for the high-and medium-priority traffic while keeping the packet loss rate under check. We prove the effectiveness of the proposed algorithm by exhaustive simulations

Application of automatic vehicle location in law enforcement: An introductory planning guide

A set of planning guidelines for the application of automatic vehicle location (AVL) to law enforcement is presented. Some essential characteristics and applications of AVL are outlined; systems in the operational or planning phases are discussed. Requirements analysis, system concept design, implementation planning, and performance and cost modeling are described and demonstrated with numerous examples. A detailed description of a typical law enforcement AVL system, and a list of vendor sources are given in appendixes

A study and experiment plan for digital mobile communication via satellite

The viability of mobile communications is examined within the context of a frequency division multiple access, single channel per carrier satellite system emphasizing digital techniques to serve a large population of users. The intent is to provide the mobile users with a grade of service consistant with the requirements for remote, rural (perhaps emergency) voice communications, but which approaches toll quality speech. A traffic model is derived on which to base the determination of the required maximum number of satellite channels to provide the anticipated level of service. Various voice digitalization and digital modulation schemes are reviewed along with a general link analysis of the mobile system. Demand assignment multiple access considerations and analysis tradeoffs are presented. Finally, a completed configuration is described

Citizen journalism in the 2007 Australian Federal Election

Citizen journalists and news and political bloggers are set to have a considerable impact on journalistic coverage of the 2007 Australian federal election campaign. Already, even before the election proper has been called, the alternative viewpoints of citizen journalists and bloggers can be seen to have significantly disrupted the previously relatively static arrangements between government and opposition parties and the journalistic establishment, and to have challenged standard modes of reporting and interpreting political events. This paper discusses the role of citizen journalists and news and political bloggers in the 2007 Australian federal election campaign by examining four key sites of such alternative reporting, analysis, and commentary: the hyperlocal citizen journalism site Youdecide2007.org, the leading left-of-centre political group blog Larvatus Prodeo, the influential psephologist blogger Possums Pollytics, and ABC Online’s attempt at blogging the election campaign, The Poll Vault. It analyses the content and style of such initiatives, and tracks the take-up of their work across the wider Australian blogosphere and beyond (in part building on network mapping methodologies as outlined in Bruns, 2007), and on that basis presents an insight into the place of news and political blogging and citizen journalism within the wider Australian mediasphere throughout the federal election campaign