Parcourir par sujet "NETWORKS"
Voici les éléments 1-20 de 25
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Adaptive channel assignment in SDMA-based wireless LANs with transceiver resource limitations
(2006)Beamforming with adaptive antenna arrays is the most promising means for increasing data rates of wireless systems, since it enables channel reuse by several users in a cell through space division multiple access (SDMA). ... -
Capacity and Stable Throughput Regions for the Broadcast Erasure Channel With Feedback: An Unusual Union
(2013)We consider a source node broadcasting to two receivers over a general erasure channel with receiver feedback. We characterize the capacity region of the channel and construct algorithms based on linear network coding ... -
Challenges in Auction Theory Driven Spectrum Management
(2011)Dynamic spectrum markets of the future will involve complex spectrum transactions among operators and users. The nontrivial dynamics in channel quality and spatiotemporal spectrum availability call for new ways of spectrum ... -
A Collaborative Biomedical Image-Mining Framework: Application on the Image Analysis of Microscopic Kidney Biopsies
(2013)The analysis and characterization of biomedical image data is a complex procedure involving several processing phases, such as data acquisition, preprocessing, segmentation, feature extraction, and classification. The ... -
Convex Approximation Algorithms for Back-Pressure Power Control
(2012)Throughput-optimal multihop wireless network operation entails a key physical-layer optimization problem: maximizing a weighted sum of link rates, with weights given by the differential queue backlogs. This emerges in joint ... -
Convex approximation techniques for joint multiuser downlink beamforming and admission control
(2008)Multiuser downlink beamforming under quality of service (QoS) constraints has attracted considerable interest in recent years, because it is particularly appealing from a network operator's perspective (e.g., UNITS, 802.16e). ... -
Coordinating Interfering Transmissions in Cooperative Wireless LANs
(2011)In this paper we present a cooperative medium access control (MAC) protocol that is designed for a physical layer that can decode interfering transmissions in distributed wireless networks. The proposed protocol pro-actively ... -
Cross-Layer Antenna Beamforming and Power Control in Wireless Uplinks
(2009)We consider backlog-driven power control and antenna beamforming as a means to maximize network throughput in a wireless uplink, where a base station receives with an antenna array from single-antenna wireless users. ... -
Defining the level of the Non-Revenue Water in Kozani, Greece: is it a typical case?
(2015)Water Losses in pipe networks usually represent the biggest "water use" due to the high leakage occurring. Water utilities are forced to apply effective Non-Revenue Water (NRW) reduction strategies, as climate change ... -
Evaluation and Properties of the Budding Yeast Phosphoproteome
(2012)We have assembled a reliable phosphoproteomic data set for budding yeast Saccharomyces cerevisiae and have investigated its properties. Twelve publicly available phosphoproteome data sets were triaged to obtain a subset ... -
Frequency-based cache management policies for collaborative and non-collaborative topologies of segment based video caching proxies
(2006)This paper examines a novel cache management policy applied to non-collaborative and collaborative environments of more than one proxy server that serve homogeneous or even heterogeneous client requests for video streaming ... -
GOrevenge: A Novel Generic Reverse Engineering Method for the Identification of Critical Molecular Players, Through the Use of Ontologies
(2011)The ever-increasing use of ontologies in modern biological analysis and interpretation facilitates the understanding of the cellular procedures, their hierarchical organization, and their potential interactions at a system's ... -
The impact of space division multiplexing on resource allocation: A unified treatment of TDMA,OFDMA and CDMA
(2008)Space division multiple access (SDMA) with an antenna array at the transmitter is a promising means for increasing system capacity and supporting rate-demanding services. However, the presence of an antenna array at the ... -
An intelligent web recommendation system for ubiquitous geolocation awareness
(2013)Because of the rapid development of World Wide Web in recent years, it has become the basic source of information for millions of people around the world. However, the huge volume of data transferred through the web often ... -
Layered multicast rate control based on Lagrangian relaxation and dynamic programming
(2006)In this paper, we address the rate control problem for layered multicast traffic, with the objective of solving a generalized throughput/fairness objective. Our approach is based on a combination of Lagrangian relaxation ... -
Maximum-Throughput Access Control in Wireless LANs Through Max-Weight-Inspired Policies
(2010)The design of efficient medium access control (MAC) protocols that are backward compatible to legacy IEEE 802.11-based protocols is a central issue in the literature. This paper draws inspiration from utility-driven ... -
Modeling of signaling pathways in chondrocytes based on phosphoproteomic and cytokine release data
(2014)Objective: Chondrocyte signaling is widely identified as a key component in cartilage homeostasis. Dysregulations of the signaling processes in chondrocytes often result in degenerative diseases of the tissue. Traditionally, ... -
On minimizing the resource consumption of cloud applications using process migrations
(2013)According to the pay-per-use model adopted in clouds, the more resources an application running in a cloud computing environment consumes, the greater the amount of money the owner of the corresponding application will be ... -
Optimal control of flexible servers in two tandem queues with operating costs
(2008)We consider two-stage tandem queuing systems with dedicated servers in each station and flexible servers that can serve in both stations. We assume exponential service times, linear holding costs, and operating costs ... -
Optimal decentralized Kalman filter and Lainiotis filter
(2013)A method to implement the optimal decentralized Kalman filter and the optimal decentralized Lainiotis filter is proposed; the method is based on the a priori determination of the optimal distribution of measurements into ...