Πλοήγηση ανά Θέμα "Efficiency"
Αποτελέσματα 21-40 από 59
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Effects of satellite spatial resolution on gross primary productivity estimation through light use efficiency modeling
(2018)Terrestrial Gross Primary Productivity (GPP) describes the total amount of CO2 assimilated by plants in an ecosystem during photosynthesis and is considered the largest flux component of the global carbon cycle. One of the ... -
Efficiency and productivity change in the greek dairy industry
(2013)The objective of this paper is to measure the efficiency and the productivity change of Greek dairy firms, using non parametric approaches. This assessment is being achieved by the computation of the CRS and the VRS DEA ... -
Efficiency assessment across homogeneous specialty clinics in the region of thessaly, Greece
(2012)Background: Hospital care expenditure is the most significant cost driver in the health care sector. Reductions in public hospitals' expenses are among the principal austerity measures included in the memorandum recommendations. ... -
Efficiency of vibration mitigation measures (floating slabs) at the latest extensions on lines 2 and 3 of the Athens Metro
(2015)This paper describes the in situ evaluation of anti vibration mitigation measures introduced in the latest two extensions on lines 2 and 3 of the Athens Metro: (a) extension of line 3 from Aigaleo to Haidari and (b) extension ... -
Electrochemical reduction of carbon dioxide at nanostructured SnO2/carbon aerogels: The effect of tin oxide content on the catalytic activity and formate selectivity
(2017)Electrochemical reduction of CO2 has been considered as a promising method for the production of value-added chemicals. In this work, the electrochemical reduction of CO2 to formate is carried out over novel carbon aerogel ... -
Estimating Malmquist productivity indexes using probabilistic directional distances: An application to the European banking sector
(2017)Our paper by adopting the latest advances on the probabilistic characterization of directional distance functions as has been introduced by Daraio and Simar (2014), develops a Malmquist productivity index and presents its ... -
Exchange of services in networks: Competition, cooperation, and fairness
(2015)Exchange of services and resources in, or over, networks is attracting nowadays renewed interest. However, despite the broad applicability and the extensive study of such models, e.g., in the context of P2P networks, many ... -
An exergetic analysis of an ethanol FED SOFC-GT hybrid system
(2009)A parametric analysis optimization and comparison of the exergetic efficiency (2nd law) of two different Solid Oxide Fuel Cell based power plants (SOFC-GT and SOFC) is carried out in the present work. The fuel with which ... -
Filtration efficiency and pressure drop modelling of particulate filters with rear plug damage
(2021)A model suitable for wall-flow particulate filters with partial rear plug damage is developed and experimentally validated in this work. A ceramic filter with 16% of the rear plugs mechanically removed is tested at ... -
Heat waves occurrence and outdoor workers’ self-assessment of heat stress in slovenia and greece
(2019)Changing patterns of heat waves are part of the global warming effect and the importance of changes is reinforced by their negative impact on society. Firstly, heat waves were analyzed in Brnik (Slovenia) and Larisa (Greece) ... -
The impact of economic growth on environmental efficiency of the electricity sector: A hybrid window DEA methodology for the USA
(2018)This paper estimates the efficiency of the power generation sector in the USA by using Window Data Envelopment Analysis (W-DEA). We integrate radial and non-radial efficiency measurements in DEA using the hybrid measure ... -
An implicit numerical scheme for cyclic elastoplasticity and ratcheting under plane stress conditions
(2021)The paper reports the development of an implicit numerical scheme for plane stress cyclic elasto-plasticity, capable of integrating a wide range of hardening rules, and simulating multi-axial ratcheting in metal structural ... -
Integrated Hydro-Economic Modeling for Sustainable Water Resources Management in Data-Scarce Areas: The Case of Lake Karla Watershed in Greece
(2019)Hydro-economic models can serve as valuable tools to improve the understanding of system details, as well as to support decision-making and water resources management. However, hydro-economic models are not practically ... -
Integrated Modeling of Agronomic and Water Resources Management Scenarios in a Degraded Coastal Watershed (Almyros Basin, Magnesia, Greece)
(2022)The scope of this study is to assess the effects of agronomic and water resources management scenarios on groundwater balance, seawater intrusion, and nitrate pollution and the comparison of the developed scenarios relative ... -
The interconnections of academic research and universities’ “third mission”: Evidence from the UK
(2019)A considerable body of work acknowledges the importance and benefits of the university–industry relationship for the economy and society, but also for increasing the revenue of universities themselves (known also as ... -
Joint Strength or "Efficiency" Factors of Steel Lap Welded Joints for Use in Water Conveyance
(2019)Joint "efficiency" factors are proposed for pressure vessels, piping, and pipelines by ASME standards. For the particular case of non-radiographically-tested lap-welded joints, a low value of joint "efficiency" is proposed. ... -
LB-Grid: An SSD efficient Grid File
(2019)Recent advances in non-volatile memory technology have led to the introduction of solid state drives (SSD). NVMe SSDs are the latest development in flash based solid state drives and they were designed as a means of low ... -
A Low Complexity Indoor Visible Light Positioning Method
(2021)The continuous positioning of a mobile user equipment (MU) in a prompt way is a fundamental requirement in several indoor applications related to ubiquitous computation, assisted living environments, and security/surveillance ... -
Measurement of eco-efficiency and convergence: Evidence from a non-parametric frontier analysis
(2021)This study applies a nonparametric model to estimate the eco-efficiency across the US states over the period 1990–2017. To capture the environmental damage caused by anthropogenic activities, we utilize one global (CO2) ... -
Measuring Sustainability Efficiency Using a Two-Stage Data Envelopment Analysis Approach
(2015)In this article, we apply an additive two-stage data envelopment analysis estimator on a panel of 20 countries with advanced economies for the time period 1990-2011 in order to create a composite sustainability efficiency ...