Results 1 to 10 of about 4,062 (48)

Introducing carsharing schemes in low‐density areas: The case of the outskirts of Le Mans (France)

open access: yesRegional Science Policy &Practice, Volume 15, Issue 2, Page 239-255, April 2023., 2023
Abstract Nowadays, the issue of rural development has a central place on the agenda of policymakers, particularly in the field of transportation. In low‐density areas, there is a lack of alternatives to car use, but at the same time internal combustion vehicles are currently contested in Western societies for their impacts on global warming. As part of
Jean Leroy   +2 more
wiley   +1 more source

Capacity per Unit-Energy of Gaussian Random Many-Access Channels [PDF]

open access: yes, 2020
We consider a Gaussian multiple-access channel with random user activity where the total number of users $\ell_n$ and the average number of active users $k_n$ may be unbounded.
Koch, Tobias, Ravi, Jithin
core   +2 more sources

Fundamental Limits of Coded Caching: Improved Delivery Rate-Cache Capacity Trade-off [PDF]

open access: yes, 2016
A centralized coded caching system, consisting of a server delivering N popular files, each of size F bits, to K users through an error-free shared link, is considered.
Amiri, Mohammad Mohammadi, Gunduz, Deniz
core   +2 more sources

Calcium Hydroxide Nanoparticles and Hypogeum Environment: Test to Understand the Best Way of Application

open access: yesJournal of Nanomaterials, Volume 2014, Issue 1, 2014., 2014
For a long time the conservation of archaeological artefacts has been based on the principles of compatibility and minimal intervention. This involves a series of partially unsolved problems, concerning the products used for deteriorated structures consolidation.
Andrea Macchia   +7 more
wiley   +1 more source

Energy-Efficient Symbol-Level Precoding in Multiuser MISO Based on Relaxed Detection Region [PDF]

open access: yes, 2015
This paper addresses the problem of exploiting interference among simultaneous multiuser transmissions in the downlink of multiple-antenna systems. Using symbol-level precoding, a new approach towards addressing the multiuser interference is discussed ...
Alodeh, Maha   +2 more
core   +2 more sources

Decentralized Coded Caching Attains Order-Optimal Memory-Rate Tradeoff [PDF]

open access: yes, 2014
Replicating or caching popular content in memories distributed across the network is a technique to reduce peak network loads. Conventionally, the main performance gain of this caching was thought to result from making part of the requested data ...
Maddah-Ali, Mohammad Ali, Niesen, Urs
core   +1 more source

Adaptive group testing as channel coding with feedback [PDF]

open access: yes, 2012
Group testing is the combinatorial problem of identifying the defective items in a population by grouping items into test pools. Recently, nonadaptive group testing - where all the test pools must be decided on at the start - has been studied from an ...
Aldridge, Matthew
core   +1 more source

On privacy amplification, lossy compression, and their duality to channel coding

open access: yes, 2018
We examine the task of privacy amplification from information-theoretic and coding-theoretic points of view. In the former, we give a one-shot characterization of the optimal rate of privacy amplification against classical adversaries in terms of the ...
Renes, Joseph M.
core   +1 more source

Fundamental Limits of Caching [PDF]

open access: yes, 2014
Caching is a technique to reduce peak traffic rates by prefetching popular content into memories at the end users. Conventionally, these memories are used to deliver requested content in part from a locally cached copy rather than through the network ...
Maddah-Ali, Mohammad Ali, Niesen, Urs
core   +1 more source

Improving compressed sensing with the diamond norm

open access: yes, 2016
In low-rank matrix recovery, one aims to reconstruct a low-rank matrix from a minimal number of linear measurements. Within the paradigm of compressed sensing, this is made computationally efficient by minimizing the nuclear norm as a convex surrogate ...
Eisert, Jens   +3 more
core   +1 more source

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