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Now showing items 4081-4090 of 4210
The Abstract MAC Layer
(2010-08-26)
A diversity of possible communication assumptions complicates the study of algorithms and lower bounds for radio networks. We address this problem by defining an abstract MAC layer. This service provides reliable local ...
Reliably Detecting Connectivity using Local Graph Traits
(2010-09-09)
Local distributed algorithms can only gather sufficient information to identify local graph traits, that is, properties that hold within the local neighborhood of each node. However, it is frequently the case that global ...
Learning and Invariance in a Family of Hierarchical Kernels
(2010-07-30)
Understanding invariance and discrimination properties of hierarchical models is arguably the key to understanding how and why such models, of which the the mammalian visual system is one instance, can lead to good ...
MAC Design for Analog Network Coding
(2010-08-02)
Most medium access control mechanisms discard collided packets and consider interference harmful. Recent work on Analog Network Coding (ANC) suggests a different approach, in which multiple interfering transmissions are ...
Comparison of User Traffic Characteristics on Mobile-Access versus Fixed-Access Networks
(2011-05-03)
We compare Web traffic characteristics of mobile- versus fixed-access end-hosts, where herein the term "mobile" refers to access via cell towers, using for example the 3G/UMTS standard, and the term "fixed" includes Wi-Fi ...
Library Cache Coherence
(2011-05-02)
Directory-based cache coherence is a popular mechanism for chip multiprocessors and multicores. The directory protocol, however, requires multicast for invalidation messages and the collection of acknowledgement messages, ...
Gasping for AIR Why we need Linked Rules and Justifications on the Semantic Web
(2011-04-16)
The Semantic Web is a distributed model for publishing, utilizing and extending structured information using Web protocols. One of the main goals of this technology is to automate the retrieval and integration of data and ...
Approximations in the HMAX Model
(2011-04-14)
The HMAX model is a biologically motivated architecture for computer vision whose components are in close agreement with existing physiological evidence. The model is capable of achieving close to human level performance ...
Collusive Dominant-Strategy Truthfulness
(2011-04-22)
Fifty years ago, Vickrey published his famous mechanism for auctioning a single good in limited supply. The main property of Vickrey's mechanism is efficiency in dominant strategies. In absence of collusion, this is a ...
ARBAC Policy for a Large Multi-National Bank
(2011-04-27)
Administrative role-based access control (ARBAC) is the first comprehensive administrative model proposed for role-based access control (RBAC). ARBAC has several features for designing highly expressive policies, but current ...