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Full-Text Articles in Physical Sciences and Mathematics

Application Layer End-To-End Arguments: From Ends To Means, And Beyond Network Neutrality, Matthias Bärwolff May 2009

Application Layer End-To-End Arguments: From Ends To Means, And Beyond Network Neutrality, Matthias Bärwolff

Matthias Bärwolff

This paper observes that the ultimate objectives of the end-to-end arguments do not necessarily entail a preference for having functions with the end hosts rather than with the network. The horizontal connotations of the end-to-end metaphor collapse when it is elevated to an application layer argument featuring strong "second order" objectives such as those pursued by network neutrality adherents. An internet that serves those ends will have to allow for ISPs to tussle with end users over economic value and surplus considerations, and acknowledge the beneficial rôle of the resulting transactions between the internet’s stakeholders.


Fuzzy Control For Nonlinear Uncertain Electrohydraulic Active Suspensions With Input Constraint, Haiping Du, Nong Zhang Jan 2009

Fuzzy Control For Nonlinear Uncertain Electrohydraulic Active Suspensions With Input Constraint, Haiping Du, Nong Zhang

Faculty of Informatics - Papers (Archive)

This paper presents a Takagi-Sugeno (T-S) model-based fuzzy control design approach for electrohydraulic active vehicle suspensions considering nonlinear dynamics of the actuator, sprung mass variation, and constraints on the control input. The T-S fuzzy model is first applied to represent the nonlinear uncertain electrohydraulic suspension. Then, a fuzzy state feedback controller is designed for the obtained T-S fuzzy model with optimized H infin performance for ride comfort by using the parallel-distributed compensation (PDC) scheme. The sufficient conditions for the existence of such a controller are derived in terms of linear matrix inequalities (LMIs). Numerical simulations on a full-car suspension model …


Predicting Avian Distributions To Evaluate Spatiotemporal Overlap With Locust Control Operations In Eastern Australia, Judit K. Szabo, Pamela J. Davy, Michael Hooper, Lee Astheimer Jan 2009

Predicting Avian Distributions To Evaluate Spatiotemporal Overlap With Locust Control Operations In Eastern Australia, Judit K. Szabo, Pamela J. Davy, Michael Hooper, Lee Astheimer

Faculty of Science - Papers (Archive)

Locusts and grasshoppers cause considerable economic damage to agriculture worldwide. The Australian Plague Locust Commission uses multiple pesticides to control locusts in eastern Australia. Avian exposure to agricultural pesticides is of conservation concern, especially in the case of rare and threatened species. The aim of this study was to evaluate the probability of pesticide exposure of native avian species during operational locust control based on knowledge of species occurrence in areas and times of application. Using presence-absence data provided by the Birds Australia Atlas for 1998 to 2002, we developed a series of generalized linear models to predict avian occurrences …


The Chaperone Action Of Clusterin And Its Putative Role In Quality Control Of Extracellular Protein Folding, Amy Wyatt, Justin Yerbury, Stephen Poon, Rebecca Dabbs, Mark Wilson Dec 2008

The Chaperone Action Of Clusterin And Its Putative Role In Quality Control Of Extracellular Protein Folding, Amy Wyatt, Justin Yerbury, Stephen Poon, Rebecca Dabbs, Mark Wilson

Mark R Wilson

The function(s) of clusterin may depend upon its topological location. A variety of intracellular "isoforms" of clusterin have been reported but further work is required to better define their identity. The secreted form of clusterin has a potent ability to inhibit both amorphous and amyloid protein aggregation. In the case of amorphous protein aggregation, clusterin forms stable, soluble high-molecular-weight complexes with misfolded client proteins. Clusterin expression is increased during many types of physiological and pathological stresses and is thought to function as an extracellular chaperone (EC). The pathology of a variety of serious human diseases is thought to arise as …


The Privacy-Value-Control Harmonization For Rfid Adoption In Retail, Ben D. Renegar, K. Michael Dec 2008

The Privacy-Value-Control Harmonization For Rfid Adoption In Retail, Ben D. Renegar, K. Michael

Professor Katina Michael

Privacy concerns have, at least in part, impeded the adoption of radio frequency identification (RFID) in retail. The adoption of other automatic identification (auto-ID) applications shows that consumers often are willing to trade their privacy or their control of personal information against some value afforded by the application. In this paper, the interplay between privacy, value, and control is examined through a literature survey of four auto-ID applications: mobile phone, electronic toll collection, e-passports, and loyalty programs. The consumer value proposition for the use of RFID in retail is investigated through an online survey exploring end-user perceptions. The results of …