Listar por tema "SYSTEMS"
Mostrando ítems 1-20 de 86
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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). ... -
Analysis of multiplicity phenomena in longitudinal fins under multi-boiling conditions
(2004)A numerical bifurcation analysis is carried out in order to determine the solution structure of longitudinal fins subject to multi-boiling heat transfer mode. The thermal analysis can no longer be performed independently ... -
Approximation Algorithms for Mobile Data Caching in Small Cell Networks
(2014)Small cells constitute a promising solution for managing the mobile data growth that has overwhelmed network operators. Local caching of popular content items at the small cell base stations (SBSs) has been proposed to ... -
Arbuscular Mycorrhizal Fungi: A Blessing or A Curse for Weed Management in Organic Olive Crops?
(2011)Arbuscular Mycorrhizal (AM) fungi form symbiotic associations with the roots of many plants including important weeds. Cultural practices affect the populations and the infectivity of AM fungi. Density, biomass, root ... -
Asymptotic optimality of the Round-Robin policy in multipath routing with resequencing
(2006)We consider a model of a multipath routing system where arriving customers are routed to a set of identical, parallel, single server queues according to balancing policies operating without state information. After completion ... -
Behavioural Adaptation towards Efficient Resource Sharing under the Lack of Communication
(2013)This paper introduces a novel multi-agent model for simulating water sharing scenarios under various irrigation policies, together with a novel self adaptive learning algorithm that achieves efficient resource allocation. ... -
Brain hemisphericity and developmental dyslexia
(2013)The present study examined the link between brain hemisphericity and dyslexia in secondary school students, using the Preference Test (PT), a widely used self-report index of preferred hemisphere thinking styles. The ... -
A case study of investigating reliability and maintainability in a Greek juice bottling medium size enterprise (MSE)
(2009)The reliability and maintainability analysis of an automated mechanical equipment of juice bottling industry for a period of forty-five months at machine, workstation and entire line level was made. The descriptive statistics ... -
A comparison of centralized and distributed meta-scheduling architectures for computation and communication tasks in Grid networks
(2009)The management of Grid resources requires scheduling of both computation and communication tasks at various levels. In this study, we consider the two constituent sub-problems of Grid scheduling, namely: (i) the scheduling ... -
Comparison of computational intelligence based classification techniques for remotely sensed optical image classification
(2006)Several computational intelligence components, namely neural networks (NNs), fuzzy sets, and genetic algorithms (GAs), have been applied separately or in combination to the process of remotely sensed data classification. ... -
Comparison of two commercial methods with PCR restriction fragment length polymorphism of the tuf gene in the identification of coagulase-negative staphylococci
(2006)Aims: Two commercial methods for the identification of coagulase-negative staphylococci (CNS) were compared with the restriction fragment length polymorphism (RFLP) of the amplified tuf gene, which served as the reference ... -
Conditional symmetries and the canonical quantization of constrained minisuperspace actions: The Schwarzschild case
(2013)A conditional symmetry is defined, in the phase space of a quadratic in velocities constrained action, as a simultaneous. conformal symmetry of the supermetric and the superpotential. Iris proven that such a symmetry ... -
Context dependency of comfort and energy performance in mixed-mode offices
(2011)This article investigates the context dependency of comfort and energy performance in mixed-mode offices in the climate of Athens, Greece. It is based on a parametric study using the simulation software EnergyPlus. Context ... -
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 ... -
Cross-layer adaptive techniques for throughput enhancement in wireless OFDM-based networks
(2006)Although independent consideration of layers simplifies wireless system design, it is inadequate since: 1) it does not consider the effect of co-channel user interference on higher layers; 2) it does not address the impact ... -
Current strategies for dairy waste management: A review
(2006)Industrial waste management is nowadays one of the main issues for ensuring a sustainable environment. Dairy waste management in particular is very crucial in view of the high organic matter and high nutrient levels contained ... -
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 ... -
Degradation and Adsorption of Pesticides in Compost-Based Biomixtures as Potential Substrates for Biobeds in Southern Europe
(2010)Biobeds have been used in northern Europe for minimizing point source contamination of water resources by pesticides. However, little is known regarding their use in southern Europe where edaphoclimatic conditions and ... -
Delineation of management zones in an apple orchard in Greece using a multivariate approach
(2013)Management zone (MZ) delineation is important for the application of Precision Agriculture because farm management decisions are based on it. Several factors were used for the MZ delineation including crop and soil ... -
Design optimization of quarter-car models with passive and semi-active suspensions under random road excitation
(2005)A methodology is presented for optimizing the suspension damping and stiffness parameters of nonlinear quarter-car models subjected to random road excitation. The investigation starts with car models involving passive ...