In this submission, we propose an efficient identity-based and implicitly authenticated key agreement protocol IDAK based on pairing techniques. Though both Weil and Tate pairing could be used for IDAK, we recommend Tate pairing for IDAK to avoid extra ephemeral value validation process. The security of IDAK was formally proved in [22] in Bellare-Rogaway model with random oracle. In additon, ID...

We consider how Fibre Channel switches can be cascaded to form a Fibre Channel fabric. We begin with an analytical model of topology performance that provides a theoretical upper bound on fabric per$ormance and a method for the practical evaluation of fabric topologies. We then consider the prevention of buffer-cycle deadlock in Fibre Channel networks. We show that though some topologies implic...

51_10 Representing the second largest source of external funding for developing countries, remittances – money transfers by migrants to their relatives or other persons in countries of origin – are recognized by governments and international organizations as important tools for reducing household poverty and enhancing local development.1 However, it is often implicitly assumed in research, poli...

How many perfect matchings are contained in a given bipartite graph? An exercise in Godsil’s 1993 Algebraic Combinatorics solicits proof that this question’s answer is an integral involving a certain rook polynomial. Though not widely known, this result appears implicitly in Riordan’s 1958 An Introduction to Combinatorial Analysis. It was stated more explicitly and proved independently by S.A. ...

The 2010 German 4G spectrum auction was an unusually large simultaneous ascending multi-band auction. The bidding was competitive and the final assignment was efficient. However, our analysis suggests that independent and rational bidders had an opportunity to coordinate implicitly on a lowrevenue outcome. Coordination was difficult, though, because of a multiplicity of focal points. One import...

Kangaroo is a wide-area data movement system that provides high-throughput data movement by overlapping CPU and I/O[1,2]. Though Kangaroo is a persistent data mover, network and/or disk failures can reduce data availability, because Kangaroo can't route the data around failures. We demonstrate that by using multiple paths to the destination, we can improve availability without significant overh...

We present a model of articular cartilage lesion formation to simulate the effects of cyclic loading. This model extends and modifies the reaction-diffusion-delay model by Graham et al., 2012 for the spread of a lesion formed though a single traumatic event. Our model represents 'implicitly' the effects of loading, meaning through a cyclic sink term in the equations for live cells. Our model fo...

So far, tractable planning problems reported in the literature have been defined by syntactical restrictions. To better exploit the inherent structure in problems, however, it is probably necessary to study also structural restrictions on the state-transition graph. Such restrictions are typically computationally hard to test, though, since this graph is of exponential size. Hence, we take an i...

We analyze behavior on a TV game show where players’ earnings depend upon several factors. Attractive players fare better than less attractive ones, even though they perform no differently on every dimension. They also exhibit and engender the same degree of cooperativeness. Nevertheless, they are substantially less likely to be eliminated by their peers, even when this is costly. Our results s...

Most economists conclude that the U.S. regions have converged in per capita earnings during a majority of the 20th century, though controversy abounds over the methods employed to test for such convergence. Using time-series techniques, this paper finds evi dence that the U.S. regions have conditionally converged in per capita earnings. The findings in this paper differ from cross-sectional stu...