Abstract Surging and streaming of glaciers are modulated by meltwater availability pressure which controls mechanical coupling at their beds. Using laboratory-scale experimental modelling palaeoglaciological mapping, we explore how subglacial drainage landsystems control efficiency ice flow velocities for terrestrial-based lobes resting on flat horizontal permeable Two end-members regimes, surg...

Abstract. Current studies of submarine groundwater discharge (SGD) are commonly conducted under aquifer baseflow conditions, neglecting the influence episodic events that can significantly increase supply nutrients and water. This limits our understanding social, biogeochemical, ecological impacts SGD. In this study, we evaluated an extreme precipitation event (EPE) on magnitude To do so, three...

The probability that a random walk or polygon in the 3-space or in the simple cubic lattice contains a knot goes to one at the length goes to infinity. Here, we prove that this is also true for slipknots consisting of unknotted portions, called the slipknot, that contain a smaller knotted portion, called the ephemeral knot. As is the case with knots, we prove that any topological knot type occu...

In an object oriented, distributed environment, program maintenance, which has never been the most predictable task, becomes even more uncertain. Java’s dynamic loading mechanism was developed to tackle some of the uncertainties. In doing so, it shifts the focus from the state of the sources to that of the binaries. This paper discusses some of the implications of that move.

Bovine ephemeral fever is an important viral disease of cattle in Australia. The disease occurred each year, principally in summer and autumn, between 1981 and 1985. Queensland and the northern half of New South Wales were areas of greatest activity with only sporadic cases being reported from the Northern Territory and the northern third of Western Australia. Since 1981, the disease has been e...

The ephemeral pairing problem requires two or more specific physical nodes in a wireless broadcast network, that do not yet know each other, to establish a short-term relationship between them. Such shortlived pairings occur, for example, when one pays at a check-out using a wireless wallet. This problem is equivalent to the ephemeral key exchange problem, where one needs to establish a high-en...

Recently, Isalam and Biswas proposed a new group key agreement (GKA) protocol for imbalanced mobile networks. In this letter, we will first prove that Isalam and Biswas’s GKA protocol cannot provide perfect forward secrecy. Then we will point out that their GKA protocol is vulnerable to ephemeral key compromise attack.

Motivated by the increasing prominence of loosely-coupled systems, such as mobile and sensor networks, the characteristics of which include intermittent connectivity and volatile data, we study the tagging of data with so-called expiration times. More specifically, when data are inserted into a database, they may be stamped with time values indicating when they expire, i.e. when they are regard...

A challenge for conservation management is to understand how population and habitat dynamics interact to affect species persistence. In real landscapes, timing and duration of disturbances can vary, and species' responses to habitat changes will depend on how timing of dispersal and reproduction events relate to the landscape temporal structure. For instance, increasing disturbance frequency ma...