Spanish Ministerio De Economia Research Articles

Correlation function and the inverse problem in the BD interaction* *This study is partly supported by the National Natural Science Foundation of China (11975083, 12365019, 12275076), the Central Government Guidance Funds for Local Scientific and Technological Development, China (Guike ZY22096024), the Natural Science Foundation of Changsha (kq2208257), the Natural Science Foundation of Hunan province (2023JJ30647), and the Natural Science Foundation

We study the correlation functions of the system, which develops a bound state of approximately , using inputs consistent with the state. Then, we address the inverse problem starting from these correlation functions to determine the scattering observables related to the system, including the existence of the bound state and its molecular nature. The important output of the approach is the uncertainty with which these observables can be obtained, considering errors in the correlation functions typical of current values in correlation functions. We find that it is possible to obtain scattering lengths and effective ranges with relatively high precision and the existence of a bound state. Although the pole position is obtained with errors of the order of 50% of the binding energy, the molecular probability of the state is obtained with a very small error of the order of 6%. All these findings serve as motivation to perform such measurements in future runs of high energy hadron collisions.

Sequential single pion production explaining the dibaryon "d*(2380)" peak* *R. M. acknowledges support from a CIDEGENT program with Ref. CIDEGENT/2019/015 and from the Spanish national grant PID2019-106080GB-C21. N. I. recieved partial support from JSPS Overseas Research Fellowships and the JSPS KAKENHI Grant Number (JP19K14709). This study was also partly supported by the Spanish Ministerio de Economia y Competitividad and European

In this study, we investigate the two step sequential one pion production mechanism, that is, followed by the fusion reaction , to describe the reaction with in state . In this reaction, a narrow peak identified with a "" dibaryon has been previously observed. We discover that the second reaction step is driven by a triangle singularity that determines the position of the peak of the reaction and the high strength of the cross section. The combined cross section of these two mechanisms produces a narrow peak with a position, width, and strength, that are compatible with experimental observations within the applied approximations made. This novel interpretation of the peak accomplished without invoking a dibaryon explains why this peak has remained undetected in other reactions.

The decay and the mixing * *This work is partly supported by the National Natural Science Foundation of China (11975083, 12147211). This work is also partly supported by the Spanish Ministerio de Economia y Competitividad and European FEDER funds (FIS2017-84038-C2-1-P B) and Generalitat Valenciana (PROMETEO/2020/023). This project has received funding from the European Unions Horizon 2020 research and innovation programme

We study the and reactions, and pay attention to the different sources of isospin violation and mixing of and resonances where these resonances are dynamically generated from meson–meson interactions. We find that the main cause of isospin violation is isospin breaking in the meson–meson transition T matrices, and the other source is that the loops involving kaons in the production mechanism do not cancel due to the different masses of charged and neutral kaons. We obtain a branching ratio for production of the order of . Future experiments can address this problem, and the production rate and shape of the mass distribution will definitely help to better understand the nature of scalar resonances.

Progress report on the MEDAMI 2019 and CTR research at the DMIL in i3M

The DMIL work presented in this paper has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 695536). It has also been supported by the Spanish Ministerio de Economia, Industria y Competitividad under Grant TEC2016-79884-C2-1-R. The author would like to thank all current and former members of the DMIL at i3M for their continuous contributions to this work.

Exploring the Photocyclization Pathways of Styrylthiophenes in the Synthesis of Thiahelicenes: When the Theory and Experiment Meet.

The introduction of thiophene rings to the helical structure of carbohelicenes has electronic effects that may be used advantageously in organic electronics. The performance of these devices is highly dependent on the sulfur atom topology, so a precise knowledge of the synthetic routes that may afford isomeric structures is necessary. We have studied the photocyclization pathway of both 2- and 3-styrylthiophenes on their way to thiahelicenes by experiment and theory. To begin with, the synthesis of stereochemically well-defined 2- and 3-styrylthiophenes allowed us to register first, and simulate later, the UV–vis electronic spectra of these precursors. This information gave us access through time-dependent density functional theory calculations to the very nature of the excited states involved in the photocyclization step and from there to the regio- and stereochemical outcome of the reaction. For the widely known case of a 2-styrylthiophene derivative, the expected naphtho[2,1-b]thiophene type of ring fusion was predicted and experimentally observed by synthesis. On the contrary, 3-styrylthiophene derivatives have been seldom used in synthetic photocyclizations. Among the two possible structural outcomes, only the naphtho[1,2-b]thiophene type of ring fusion was found to be mechanistically sound, and this was actually the only compound observed by synthesis.

Three-Dimensional Proxies to Dental Wear Characterization in a Known Age-at-Death Skeletal Collection

This research was funded by the Spanish Ministerio de Economia y Competitividad grant number CGL2014-52611-C2-1-P.

Offshore manufacturing and firm innovation: the moderating role of technological capabilities

We are grateful to the Fundacion SEPI for providing access to the ESEE data and to the Spanish Ministerio de Economia y Competitividad (ECO2015-68257-R) for its financial support. We very much appreciate helpful comments from two anonymous reviewers.

Visual acuity assessment in phakic and pseudophakic eyes under red, green, and blue illumination

espanolProposito: Valorar el impacto de la iluminacion cuasi-monocromatica en la agudeza visual (AV) en ojos faquicos y pseudofaquicos utilizando diferentes longitudes de onda. Metodo: El trabajo se realizo con 61 ojos clasificados en dos grupos: 31 faquicos jovenes y 30 pseudofaquicos implantados con una lente intraocular acrilica monofocal. La AV lejana fue medida usando un optotipo expresamente disenado para el trabajo iluminandolo secuencialmente con tres luces LED de longitud de onda nominal de (B) 455nm, (G) 530nm, (R) 625nm y blanca (W) (CCT= 6500K). Adicionalmente se midio la AV cercana usando las mismas iluminaciones en el grupo de jovenes faquicos. Resultados: La mejor AV lejana en ojos faquicos se obtuvo con las iluminaciones roja y blanca mientras que en el grupo de pseudofaquicos esta se obtuvo con las iluminaciones verde y blanca. La AV con iluminacion azul fue la que obtuvo peores resultados en ambos grupos. No se encontraron diferencias estadisticamente significativas en la AV cercana para las iluminaciones R, G y B, pero fue significativamente mejor con iluminacion W que con iluminacion B. Conclusion: Los valores de AV lejana revelan el impacto de la diferencia cromatica de refracion (CDRx) provocada por la aberracion cromatica longitudinal de los ojos evaluados. Con iluminacion roja, la capacidad acomodativa de los ojos jovenes faquicos compensa la aberracion. En ojos pseudofaquicos, se observa una disminucion natural de la AV. En estos casos, ademas, la perdida de la acomodacion y un resultado refractivo postoperatorio calculado para una longitud de onda de diseno verde, hacen que la AV obtenida con luz verde sea igual a la obtenida con luz blanca. La AV cercana media obtenida en ojos faquicos jovenes revela un equilibrio en la capacidad de acomodacion con iluminacion R, G y B, si bien la AV cercana es significativamente superior con luz blanca que con luz azul. EnglishPurpose: To assess the impact of the quasi-monochromatic illumination on visual acuity (VA) in phakic and monofocal pseudophakic eyes using different wavelengths. Methods: Sixty-one eyes classified in two groups (phakic and pseudophakic) participated in this study: 31 young phakic and 30 pseudophakic implanted with an acrylic monofocal intraocular lens. Distance VA was measured with custom optotype illuminated sequentially with three LED lights of nominal wavelengths (B) 455nm, (G) 530nm, (R) 625nm and white (W) LED light (CCT= 6500K). Near VA was additionally assessed in young phakic eyes under the same illuminations. Results: Best mean distance VA was obtained under red and white lights in young phakic eyes, whereas it was obtained under white and green lights in pseudophakic eyes. For both groups, the blue illumination led to the worst mean distance VA outcomes. No significant differences were found among mean near VA for R, G an B lights, but it was significantly better under W light than under B light. Conclusion: The measured distance VA values reveal the impact of the chromatic difference of refraction caused by the longitudinal chromatic aberration of the tested eyes. This aberration, is compensated by the accommodation capability of young phakics under red light. In the case of monofocal elderly pseudophakic eyes, a natural age-related decrease in the VA is observed. Additionally, the lack of accommodation, and a postoperative refraction outcome likely targeted for a green design wavelength, make the mean distance VA under green light match the one under white light. The mean near VA results in young phakic subjects revealed a balanced accommodation capability to every R, G, B illumination, but significantly higher under W light than under B light.

Peacock.jl: Photonic crystals in Julia

S.J.P. acknowledges his studentship from the Centre for Doctoral Training on Theory and Simulation of Materials at Imperial College London funded by EPSRC Grant No. EP/L015579/1. V.G. acknowledges the Spanish Ministerio de Economia y Competitividad for financial support through the grant NANOTOPO (FIS2017-91413-EXP) and also the Ministerio de Ciencia, Innovacion y Universidades through the grant MELODIA (PGC2018-095777-B-C21).

Ξbb and Ωbbb molecular states * * Partly supported by the National Natural Science Foundation of China (11975083, 11947413, 11847317, 11565007, 11735003, 1191101015). Q. X Yu acknowledges the support from the National Natural Science Foundation of China (11775024, 11575023, 11805153) and China Scholarship Council. Partly supported by the Spanish Ministerio de Economia y Competitividad and European FEDER funds (FIS2017- 84038-C2-1-P

Using the vector exchange interaction in the local hidden gauge approach, which in the light quark sector generates the chiral Lagrangians and has produced realistic results for and the hidden charm pentaquark states, we study the meson-baryon interactions in the coupled channels that lead to the and excited states of the molecular type. We obtain seven states of the type with energies between and MeV, and one state at MeV.

Insights Into Efficient k-Nearest Neighbor Classification With Convolutional Neural Codes

The increasing consideration of Convolutional Neural Networks (CNN) has not prevented the use of the k-Nearest Neighbor (kNN) method. In fact, a hybrid CNN-kNN approach is an interesting option in which the network specializes in feature extraction through its activations (Neural Codes), while the kNN has the advantage of performing a retrieval by means of similarity. However, this hybrid approach also has the disadvantages of the kNN search, and especially its high computational cost which is, in principle, undesirable for large-scale data. In this paper, we present the first comprehensive study of efficient kNN search algorithms using this hybrid CNN-kNN approach. This has been done by considering up to 16 different algorithms, each of which is evaluated with a different parametrization, in 7 datasets of heterogeneous composition. Our results show that no single algorithm is capable of covering all aspects, but rather that each family of algorithms is better suited to specific aspects of the problem. This signifies that Fast Similarity Search algorithms maintain their performance, but do not reduce the cost as much as the Data Reduction family does. In turn, the Approximated Similarity Search family is postulated as a good option when attempting to balance accuracy and efficiency. The experiments also suggest that considering statistical transformation algorithms such as Linear Discriminant Analysis might be useful in certain cases.

A computational technique to predict the level of glucose of a diabetic patient with uncertainty in the short term

This work has been partially supported by the Spanish Ministerio de Economia y Competitividad under grant MTM2017-89664-P and RTI2018-095180-B-I00 and by Fundacion Eugenio Rodriguez Pascual 2019 -GLENO Project

Water Distribution Networks Optimization Using Disjunctive Generalized Programming

The authors gratefully acknowledge the financial support from the National Council for Scientific and Technological Development - CNPq (Brazil), the Coordination for the Improvement of Higher Education Personnel - Process 88881.171419/2018-01- CAPES (Brazil) and the Spanish Ministerio de Economia, Industria y Competitividad CTQ2016-77968-C3-02-P (FEDER, UE).

Tropical nights on the Spanish Mediterranean coast, 1950-2014

R.S.N. was funded by a 'Juan de la Cierva' postdoctoral grant FJCI-2017-31595. J.M. thanks the Spanish Ministerio de Economia y Competitividad and the European Regional Development Fund (FEDER) through the project CGL2015-64268-R (MINECO/FEDER, UE). O.M.R. thanks the Climatology Group (2017SGR1362, Catalan Government) and the CLICES Project (CGL2017-83866-C3-2-R).

The X(4140) and X(4160) resonances in the reaction * * Partly supported by the National Natural Science Foundation of China (11735003, 11522539, 11505158, 11475015, 11647601), supported by the Youth Innovation Promotion Association CAS (2016367), Key Research Projects of Henan Higher Education Institutions (20A140027), and the Academic Improvement Project of Zhengzhou University. This work is also partly supported by the Spanish

We investigate the invariant mass distribution in the reaction at a center-of-mass energy of GeV measured by the BESIII collaboration, which concluded that no significant signals were observed for because of the low statistics. We show, however, that the invariant mass distribution is compatible with the existence of the state, appearing as a peak, and a strong cusp structure at the threshold, resulting from the molecular nature of the state, which provides a substantial contribution to the reaction. This is consistent with our previous analysis of the decay measured by the LHCb collaboration. We strongly suggest further measurements of this process with more statistics to clarify the nature of the and resonances.

Empirical characterisation of the indoor multi‐user MIMO channel in the 3.5 GHz band

This work has been supported by the Spanish Ministerio de Economia, Industria y Competitividad under the projects TEC2017-86779-C2-1-R and TEC2017-86779-C2-2-R.

Optimal Control of the Two-Dimensional Stationary Navier--Stokes Equations with Measure Valued Controls

The first author was supported by the Spanish Ministerio de Economia, Industria y Competitividad under research projects MTM2014-57531-P and MTM2017-83185-P. The second author was supported by the ERC advanced grant 668998 (OCLOC) under the EU’s H2020 research program.

Error Estimates for Semilinear Parabolic Control Problems in the Absence of Tikhonov Term

The first two authors were partially supported by the Spanish Ministerio de Economia, Industria y Competitividad through research projects MTM2014-57531-P and MTM2017-83185-P.

Erebia epiphronandErebia orientalis: sibling butterfly species with contrasting histories

We thank the association ZERYTNHIA (http://www.asociacion-zerynthia.org/) for its support and the government of La Rioja for financing a specific study some years ago, as well as for the administrative authorization for the collection of samples. Financial support for this research was provided by Spanish Agencia Estatal de Investigacion and European Regional Development Fund, Grant Number CGL2016-76322-P (AEI/FEDER, UE) and by Spanish Ministerio de Economia, Industria y Competitividad, Agencia Estatal de Investigacion and European Social Fund thorugh predoctoral fellowship BES-2017–080641 (MINECO/AEI/FSE) to JCH.

Experimental Stark widths and shifts of Mn iispectral lines

This work has been supported by project FIS2014–54285-P of the Spanish Ministerio de Economia y Competitividad.