Impact of Symmetric Vertical Sinusoid Alignments on Infrastructure Construction Costs: Optimizing Energy Consumption in Metropolitan Railway Lines Using Artificial Neural Networks

[EN] Minimizing energy consumption is a key issue from both an environmental and economic perspectives for railways systems; however, it is also important to reduce infrastructure construction costs. In the present work, an artificial neural network (ANN) was trained to estimate the energy consumption of a metropolitan railway line. This ANN was used to test hypothetical vertical alignments scenarios, proving that symmetric vertical sinusoid alignments (SVSA) can reduce energy consumption by up to 18.4% compared with a flat alignment. Finally, we analyzed the impact of SVSA application on infrastructure construction costs, considering different scenarios based on top-down excavation methods. When balancing reduction in energy consumption against infrastructure construction costs between SVSA and flat alignment, the extra construction costs due to SVSA have a return period of 25-300 years compared with a flat alignment, depending on the soil type and construction method used. Symmetric vertical sinusoid alignment layouts are thus suitable for scattered or soft soils, up to compacted intermediate geomaterials.This paper was realized thanks to the collaboration agreement signed between Ferrocarrils de la Generalitat Valenciana and Universitat Politecnica de Valencia, and funding obtained by the Spanish Ministry of Economy and Competitiveness through the project ''Strategies for the design and energy-efficient operation of railway and tramway infrastructure'' (Ref. TRA2011-26602).Pineda-Jaramillo, J.; Salvador Zuriaga, P.; Martínez Fernández, P.; Insa Franco, R. (2020). Impact of Symmetric Vertical Sinusoid Alignments on Infrastructure Construction Costs: Optimizing Energy Consumption in Metropolitan Railway Lines Using Artificial Neural Networks. Urban Rail Transit. 6(3):145-156. https://doi.org/10.1007/s40864-020-00130-714515663International Energy Agency (2018) Key world energy statistics. 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Predicting the traction power of metropolitan railway lines using different machine learning models

This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Rail Transportation on 2021, available online: http://www.tandfonline.com/10.1080/23248378.2020.1829513[EN] Railways are an efficient transport mean with lower energy consumption and emissions in comparison to other transport means for freight and passengers, and yet there is a growing need to increase their efficiency. To achieve this, it is needed to accurately predict their energy consumption, a task which is traditionally carried out using deterministic models which rely on data measured through money- and time-consuming methods. Using four basic (and cheap to measure) features (train speed, acceleration, track slope and radius of curvature) from MetroValencia (Spain), we predicted the traction power using different machine learning models, obtaining that a random forest model outperforms other approaches in such task. The results show the possibility of using basic features to predict the traction power in a metropolitan railway line, and the chance of using this model as a tool to assess different strategies in order to increase the energy efficiency in these lines.This work was supported by the Ministerio de Economia y Competitividad [TRA2011-26602].Pineda-Jaramillo, J.; Martínez Fernández, P.; Villalba Sanchis, I.; Salvador Zuriaga, P.; Insa Franco, R. (2021). Predicting the traction power of metropolitan railway lines using different machine learning models. International Journal of Rail Transportation. 9(5):461-478. https://doi.org/10.1080/23248378.2020.1829513S4614789

Primera cita de Epilobium ciliatum Raf. (Onagraceae) en la Comunidad Valenciana

Se comunica la presencia de la especie alóctona Epilobium ciliatum Raf. (Onograceae) en la Comunidad Valenciana (España). Esta cita constituye la segunda referencia para la especie en la Península Ibérica, tras su localización reciente en la Comunidad de Madrid. Se comentan algunos aspectos de su posible introducción en el territorio valenciano así como su estado como planta alóctona potencialmente invasora y los caracteres morfológicos más útiles para su identificación

Notas sobre el complejo taxonómico Cardamine flexuosa With. (Cruciferae) y su presencia en la Comunidad Valenciana

Se comunica la presencia de Cardamine flexuosa With. s. str. como primera cita para la Comunidad Valenciana y de Cardamine flexuosa subsp. debilis O. E. Schulz como primera cita para la provincia de Valencia. Se repasan ciertos aspectos nomenclaturales, taxonómicos, corológicos y ecológicos referentes a los dos táxones, así como de Cardamine hirsuta L., especie morfológicamente afín. Se propone una clave dicotómica para la identificación y discriminación de estos tres táxones. Se informa sobre la probable vía de entrada de C. flexuosa s.l. y se evalúa su estado como posible potencial invasor.First record of Cardamine flexuosa With. s. str. from the Valencian Community and first record of Cardamine flexuosa subsp. debilis O. E. Schulz from the Province of Valencia, both placed at Eastern Spain, are reported. Some nomenclatural, taxonomic, chorological and ecological aspects reporting both taxa are reviewed, as well as those related to Cardamine hirsuta L., a morphologically very similar species. A dichotomous key to identify and separate these three taxa is proposed. The introduction way of the alien species C. flexuosa s.l. is suggested and an evaluation of the status as a possible potential invasive species is made

Storing, reporting and comparing proteomics experiments using the miape generator tool

Comunicaciones a congreso

Preliminary study for simultaneous detection and quantification of androgenic anabolic steroids using ELISA and pattern recognition techniques

A first step towards the multidetection, identification and quantification of anabolic androgenic steroids by enzyme-linked immunosorbent assay (ELISA) has been performed in this study. This proposal combines multiple competitive ELISA assays with different cross-reactivity profiles and multivariate data analysis techniques. Data have been analyzed by principal component analysis in conjunction with a novel K-nearest line classifier. This proposal allows simultaneous detection of up to four different steroids in the range of concentration from 0.1 to 316.2 nM with a total rate of 90.6% of correct detection, even in the presence of cross-reactivities. A methodology for concentration prediction is also presented with satisfactory results

A wave packet Golden Rule treatment of vibrational predissociation

The time-dependent wave packet technique is applied to the Golden Rule treatment of vibrational predissociation. The wave packet at time zero is taken as the product of the quasibound wave function and the coupling inducing predissociation. The rate for vibrational predissociation can then be obtained by Fourier transform into the energy domain of the time-dependent wave packet autocorrelation function. The method has been applied to a model triatomic van der Waals molecule. It is shown that when the bound-state components of the wave packet are projected out, the time-dependent version of the Golden Rule approximation provides an alternative efficient technique to treat intramolecular decay. © 1991 American Institute of Physics.Peer Reviewe

Centaurea X sanchisiana nothosp. nov. (Asteraceae), a new hibrid for the iberian flora

Es descriu un nou híbrid del gènere Centaurea L. (Asteraceae) producte de l'encreuament entre C. Aspera L. i C. bofilliana Sennen ex Devesa & E. López, C. x sanchisiana nothosp. nov., a més de dues noves notovarietats, Var. malvarosae i var. pectiniformis. Aquestos híbrids han estat localitzats a Alatoz i Casas de Ves (Albacete, Espanya) i Borriana (Castelló, Espanya) respectivament. A més de les corresponents descripcions i diagnosis, s'hi aporten 4 lamines i una taula amb els principals trets diagnòstics que els diferencien deis parentals i de dos tàxons morfològicament pròxims. Es comparen trets reproductius de la nova notoespecie referits a !'involucre i al pol·len amb els de C. x pouzinii De. Es proposa una nova notosecció Calciseridia R. Roselló et al., nothosect. nov.A new hybrid of the genus Centaurea L. (Asteraceae), coming from the cross between C. aspera L. and C. bofilliana Sennen ex Devesa & E. López, C. x sanchisiana, nothosp. nov., and two new nothovarieties, var. ma/varosae and varo pectiniformis are described. These hybrids were found respectively in Alatoz and Casas de Ves (Albacete, Spain), and Borriana (Castellón, Spain). The plant descriptions and diagnosis, as well as iconography and the table showing the main diagnostic characters to distinguish them from both parentals and two morphologycally similar taxa are provided. New nothospecies's reproductive traits related to the involucre and pollen are compared with those of C. x pouzinii De. A new nothosection Calciseridia R. Roselló et al., nothosect. nov., is proposed

Centaurea × sanchisiana nothosp. nov. (Asteraceae), un nou híbrid per a la flora ibèrica

Es descriu un nou híbrid del gènere Centaurea L. (Asteraceae) producte de l’encreuament entre C. aspera L. i C. bofilliana Sennen ex Devesa & E. López, C. × sanchisiana nothosp. nov., a més de dues noves notovarietats, var. malvarosae i var. pectiniformis. Aquestos híbrids han estat localitzats a Alatoz i Casas de Ves (Albacete, Espanya) i Borriana (Castelló, Espanya) respectivament. A més de les corresponents descripcions i diagnosis, s’hi aporten 4 làmines i una taula amb els principals trets diagnòstics que els diferencien dels parentals i de dos tàxons morfològicament pròxims. Es comparen trets reproductius de la nova notoespecie referits a l’involucre i al pol·len amb els de C. × pouzinii DC. Es proposa una nova notosecció Calciseridia R. Roselló et al., nothosect. nov.Centaurea x sanchisiana nothosp. nov. (Asteraceae), a new hibrid for the iberian flora A new hybrid of the genus Centaurea L. (Asteraceae), coming from the cross between C. aspera L. and C. bofilliana Sennen ex Devesa & E. López, C. × sanchisiana, nothosp. nov., and two new nothovarieties, var. malvarosae and var. pectiniformis are described. These hybrids were found respectively in Alatoz and Casas de Ves (Albacete, Spain), and Borriana (Castellón, Spain). The plant descriptions and diagnosis, as well as iconography and the table showing the main diagnostic characters to distinguish them from both parentals and two morphologycally similar taxa are provided. New nothospecies’s reproductive traits related to the involucre and pollen are compared with those of C. × pouzinii DC. A new nothosection Calciseridia R. Roselló et al., nothosect. nov., is proposed

Irrigation control by mimicry

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