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Browsing by Subject "Efficiency"

Now showing items 1-20 of 235

A class of efficient high-order iterative methods with memory for nonlinear equations and their dynamics

Howk, Cory L.; Hueso, J.L.; Martínez Molada, Eulalia; Teruel-Ferragud, Carles (John Wiley & Sons, 2018)

[EN] In this paper we obtain some theoretical results about iterative methods with memory for nonlinear equations. The class of algorithms we consider focus on incorporating memory without increasing the computational cost ...
A New High-Order Jacobian-Free Iterative Method with Memory for Solving Nonlinear Systems

Behl, Ramandeep; Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón; Bhalla, Sonia (MDPI AG, 2021-09-01)

[EN] We used a Kurchatov-type accelerator to construct an iterative method with memory for solving nonlinear systems, with sixth-order convergence. It was developed from an initial scheme without memory, with order of ...
A new risk reduction indicator for dam safety management combining efficiency and equity principles

Serrano Lombillo, Armando José; Morales Torres, Adrián; Escuder Bueno, Ignacio; Altarejos García, Luis (Taylor & Francis, 2016)

[EN] Large dams are critical infrastructures whose failure could produce high economic and social consequences. Risk analysis has been shown to be a suitable methodology to assess these risks and to inform dam safety ...
A new three-step class of iterative methods for solving nonlinear systems

Capdevila-Brown, Raudys Rafael; Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón (MDPI AG, 2019-12)

[EN] In this work, a new class of iterative methods for solving nonlinear equations is presented and also its extension for nonlinear systems of equations. This family is developed by using a scalar and matrix weight ...
A physically based methodology to extrapolate performance maps of radial turbines

Payri González, Francisco; Serrano Cruz, José Ramón; Fajardo, Pablo; Reyes Belmonte, Miguel Ángel; Gozalbo Belles, Ricardo (Elsevier, 2012-03)

This paper details a physically based methodology to perform an extrapolation of the radial turbine performance maps, both mass flow characteristics and the efficiency curve. This method takes into account a narrow range ...
A power consumption monitoring, displaying and evaluation system for home devices

Miquel Murcia, Antoni; Belda Ortega, Román; De Fez Lava, Ismael; Arce Vila, Pau; Fraile Gil, Francisco; Guerri Cebollada, Juan Carlos; Martínez Zaldívar, Francisco José; Gallardo Bermell, Sergio (2013)

[EN] This paper presents an implementation of a smart meter monitoring system based on Arduino platform and accessible from Android mobile devices. On the one hand, it has been developed a measure device, based on Arduino, ...
A Project focused on the Development of a Hybrid Floating Solar Device with Thermoelectric Generators for the Rursee in Heimbach in Germany

Penáguila Rubio, Esther (Universitat Politècnica de València, 2023-03-29)

[ES] Este Proyecto de Fin de Grado lleva a cabo el diseño de una idea conceptual de una estructura flotante para transportar un panel flotante. El objetivo de este trabajo es determinar la viabilidad técnica y económica ...
Acerca de la eficacia y de la eficiencia

López Ujaque, José Manuel (Universitat Politècnica de València, 2014-12-20)

[EN] The western concept of efficacy originates from a classic understanding of our relation with the environment around us. We often establish an ideal architectural shape –eîdos– which we define as a goal –télos– and we ...
Achieving clean and efficient engine operation up to full load by combining optimized RCCI and dual-fuel diesel-gasoline combustion strategies

Benajes, Jesús; García Martínez, Antonio; Monsalve-Serrano, Javier; Boronat-Colomer, Vicente (Elsevier, 2017-03-15)

[EN] This experimental work investigates the capabilities of the reactivity controlled compression ignition combustion concept to be operated in the whole engine map and discusses its benefits when compared to conventional ...
Advice to water management practitioners on competition, efficiency and new business opportunities

Hoffjan, Andreas; Müller, Nicole Annett; Di Federico, Vittorio; Liserra, Tonino (2014-07-30)

The water sector faces several challenges, which may demand a rethink of several important aspects within historically grown, traditional business models. The need for cost-effectiveness and the lack of public funding goes ...
An analysis of innovation in textile companies: an efficiency approach

Puertas Medina, Rosa María; Martí Selva, María Luisa; Calafat Marzal, Maria Consuelo (Willey, 2020-01)

[EN] The elimination of trade contingency measures in 2005 triggered a process of renewal in the textile sector, requiring major investments. The divide between efficiency and innovation has become an issue of major ...
An efficient and scalable block parallel algorithm of Neville elimination as a tool for the CMB maps problem

Alonso, P.; Cortina, R.; Ranilla, J.; Vidal Maciá, Antonio Manuel (Springer Verlag (Germany), 2012-02)

Abstract This paper analyses the performance of several versions of a block parallel algorithm in order to apply Neville elimination in a distributed memory parallel computer. Neville elimination is a procedure to transform ...
An experimental investigation on the influence of piston bowl geometry on RCCI performance and emissions in a heavy-duty engine

Benajes Calvo, Jesus Vicente; Pastor Soriano, José Vicente; García Martínez, Antonio; Monsalve Serrano, Javier (Elsevier, 2015-10)

This experimental work investigates the effects of piston bowl geometry on RCCI performance and emissions at low, medium and high engine loads. For this purpose three different piston bowl geometries with compression ratio ...
An investigation on the particulate number and size distributions over the whole engine map from an optimized combustion strategy combining RCCI and dual-fuel diesel-gasoline

Benajes, Jesús; García Martínez, Antonio; Monsalve-Serrano, Javier; Boronat-Colomer, Vicente (Elsevier, 2017-05-15)

[EN] Literature demonstrates that, for premixed low temperature combustion concepts, particulate matter cannot be directly extrapolated from soot emissions measurements, as typically done for conventional diesel combustion. ...
Analysis of efficiency and profitability of franchise services

García Martin, Constantino Jose; Medal Bartual, Amparo; Peris-Ortiz, Marta (Taylor & Francis (Routledge), 2014)

The present study analyses the relative efficiency of franchise services and characterises the best companies, confirming the relationship between efficiency and profit. These companies are from the trade and other ...
Analysis of efficiency of pig farms in the Valencian community (Spain)

Calafat Marzal, Maria Consuelo; Martí Selva, María Luisa; Puertas Medina, Rosa María (Universidade Federal Rural de Pernambuco, 2016-01)

[EN] In recent decades, the livestock sector has been immersed in profound changes due to legislative changes, concerning both its polluting potential. Community, national and regional policies were designed to change ...
Analysis of the effects of wall temperature swing on reciprocating internal combustion engine processes

Andruskiewicz, Peter; Najt, P; Durrett, Russell; Biesboer, S; Schaedler, T; Payri, Raul (SAGE Publications, 2018)

[EN] A thermal wall temperature swing model was built to capture the transient effects of various material properties and coating layers on the intra-cycle wall temperature of an internal combustion engine. This model was ...
Analysis of the efficiency of African countries through their Ecological Footprint and Biocapacity

Martí Selva, María Luisa; Puertas Medina, Rosa María (Elsevier, 2020-06-20)

[EN] Population inequality and climate change are two of the factors that aremost disruptive to the ecological balance; accordingly, there have been countless studies in recent years focusing on analysing the Ecological ...
Análisis coste-utilidad con datos de vida real de los nuevos tratamientos con anticuerpos monoclonales en la profilaxis de migraña

Tirado Escuder, Elena (Universitat Politècnica de València, 2023-03-20)

[ES] Las cefaleas son un importante problema sociosanitario por sus implicaciones en la calidad de vida de los pacientes, el coste económico derivado de su elevada incapacidad, el diagnóstico complejo y la elevada prevalencia ...
Análisis de la eficiencia de los motores de inducción que operan bajo diferentes condiciones de fallo

Herrera Guachamin, Jonathan Giovanny (Universitat Politècnica de València, 2018-11-30)

[ES] La presencia de distintas anomalías o defectos en un motor eléctrico puede acarrear consecuencias catastróficas, como paradas intempestivas de la propia máquina con las consiguientes interrupciones de la producción y ...