Πλοήγηση ανά Θέμα "optimization"

Algorithms for energy-driven agent placement in wireless embedded systems with memory constraints

Tziritas, N.; Loukopoulos, T.; Lalis, S.; Lampsas, P. (2011)

The agent programming paradigm provides an easy to use framework for coding embedded applications in a pervasive environment. Under this model, applications are structured as mobile agents that can be flexibly installed ...

Assessment of natural and anthropogenic impacts in groundwater, utilizing multivariate statistical analysis and inverse distance weighted interpolation modeling: the case of a Scopia basin (Central Greece)

Charizopoulos N., Zagana E., Psilovikos A. (2018)

In Scopia basin, central Greece, a hydrochemical investigation was completed. Groundwater samples from 41 sites were used to assess the natural and anthropogenic impacts in groundwater, utilizing the principal component ...

Bridging the gap between multi-objective optimization and spatial planning: a new post-processing methodology capturing the optimum allocation of land uses against established transportation infrastructure

Karakostas S.M. (2017)

The optimal allocation of multiple land uses constitutes a complex multi-objective optimization problem with unknown feasible objective space and optimal planning alternatives. Despite the effectiveness of evolutionary ...

Convex Approximation Algorithms for Back-Pressure Power Control

Matskani, E.; Sidiropoulos, N. D.; Tassiulas, L. (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 ...

Development of a Spatial Decision Support System (SDSS) for the active forest-urban fires management through location planning of mobile fire units

Sakellariou S., Samara F., Tampekis S., Sfougaris A., Christopoulou O. (2020)

Critical time of response constitutes the foundation for effective and timely forest fires management. It is the milestone for strategic and operational fire planning. Aim of the paper is the development of a Spatial ...

An eco-efficient and economical optimum evaluation technique for the forest road networks: the case of the mountainous forest of Metsovo, Greece

Tampekis S., Samara F., Sakellariou S., Sfougaris A., Christopoulou O. (2018)

The sustainable forest management can be achieved only through environmentally sound and economically efficient and feasible forest road networks and transportation systems that can potentially improve the multi-functional ...

Energy-aware joint power, packet and topology optimization by simulated annealing for WSNs

Xenakis, A.; Foukalas, F.; Stamoulis, G.; Khattab, T. (2013)

Energy-aware connectivity in wireless sensor networks (WSNs) can increase their network lifetime. This can be achieved by optimizing the power control, a particular communication mechanism and the topology control. To this ...

Evaluation of the ductility features in steel structures with softening moment-rotation behaviour based on a nonconvex optimization formulation

Karakostas, S. M.; Mistakidis, E. S. (2000)

In order to determine the ductility features of steel structures, several approaches have been introduced in the bibliography. In this paper a certain method is proposed which considers the actual form of the moment-rotation ...

Heuristics for flight and maintenance planning of mission aircraft

Kozanidis, G.; Gavranis, A.; Liberopoulos, G. (2014)

Flight and Maintenance Planning (FMP) of mission aircraft addresses the question of which available aircraft to fly and for how long, and which grounded aircraft to perform maintenance operations on, in a group of aircraft ...

Hydrologic processes simulation using the conceptual model Zygos: the example of Xynias drained Lake catchment (central Greece)

Charizopoulos N., Psilovikos A. (2016)

In the catchment of Xynias drained Lake, hydrologic processes simulation took place using a lumped approach with the conceptual model Zygos. The model implements a conceptual soil moisture accounting scheme extended with ...

Improving hybrid SOFC-GT systems performance through turbomachinery design

Bakalis, D. P.; Stamatis, A. G. (2014)

A methodology to improve the performance of a hybrid solid oxide fuel cell gas turbine (SOFC-GT) system for the whole operating range is proposed. The method suggests a way to estimate the geometric parameters of the ...

Integrated biodepuration of pesticide-contaminated wastewaters from the fruit-packaging industry using biobeds: Bioaugmentation, risk assessment and optimized management

Karas P.A., Perruchon C., Karanasios E., Papadopoulou E.S., Manthou E., Sitra S., Ehaliotis C., Karpouzas D.G. (2016)

Wastewaters from fruit-packaging plants contain high loads of toxic and persistent pesticides and should be treated on site. We evaluated the depuration performance of five pilot biobeds against those effluents. In addition ...

Integrated Railway Planning in the North West Peloponnese: A Service Ecologies Perspective

Carydi I. (2019)

Railway planning in Greece has for many years been oriented towards the technological modernisation of the railway network. The relevant planning agendas have often left the wider socio-spatial interests untouched, delivering ...

Joint Time-Domain Resource Partitioning, Rate Allocation, and Video Quality Adaptation in Heterogeneous Cellular Networks

Argyriou, A.; Kosmanos, D.; Tassiulas, L. (2015)

Heterogenous cellular networks (HCN) introduce small cells within the transmission range of a macrocell. For the efficient operation of HCNs it is essential that the high-power macrocell shuts off its transmissions for an ...

Land-use planning via enhanced multi-objective evolutionary algorithms: optimizing the land value of major Greenfield initiatives

Karakostas S.M. (2016)

The successful implementation of major development initiatives relies on the sound allocation of land uses against critical design criteria and constraints. The discovery of optimum development plans introduces severe ...