Search Results - "L. Jofre"

A scalable geometric multigrid solver for nonsymmetric elliptic systems with application to variable-density flows by Esmaily, M., Jofre, L., Mani, A., Iaccarino, G.

“…•The independence of the convergence rate from the size of the system is shown for uniform and nonuniform grids.•Our method is robust to large and sharp…”
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Effect of intraspecific competition on the demography of leaf-cutting ants: a matrix model approach by Jofre, L., de Torres Curth, M., Zimmerman, V., Farji-Brener, A. G.

“…Intraspecific competition is a pervasive phenomenon with important ecological and evolutionary consequences in ants. However, its effect at population level…”
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Integrated Bluetooth and UWB Antenna by Yildirim, B.S., Cetiner, B.A., Roqueta, G., Jofre, L.

“…A small-sized, low-profile, and planar integrated Bluetooth and ultrawideband (UWB) antenna is presented. The antenna exhibits a dual-band operation covering…”
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A dynamic load balancing method for the evaluation of chemical reaction rates in parallel combustion simulations by Muela, J., Borrell, R., Ventosa-Molina, J., Jofre, L., Lehmkuhl, O., Pérez-Segarra, C.D.

“…•Load balancing is a problematic issue in finite-rate combustion simulations.•Dynamic load balancing algorithms allow to speed up unbalanced parallel…”
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UWB Tomographic Radar Imaging of Penetrable and Impenetrable Objects by Jofre, LluÍs, Broquetas, Antoni, Romeu, Jordi, Blanch, SebastiÁn, Toda, Anna PapiÓ, Fabregas, Xavier, Cardama, Angel

“…In this paper, the capability of ultra-wide-band (UWB) sensor arrays for tomographic radar of electrically large objects is presented. The major concern when…”
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A Quad-Band Antenna for Public Safety Applications by Mopidevi, H., Damgaci, Y., Rodrigo, D., Jofre, L., Cetiner, B. A.

“…The design, fabrication, and characterization of a frequency-reconfigurable antenna for the United States Public Safety (PS) wireless communication…”
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The Effect of nest Size and Species Identity on Plant Selection in Acromyrmex Leaf-Cutting Ants by Jofre, Laura Elizabeth, Medina, Ana Irene, Farji-Brener, Alejandro Gustavo, Moglia, Marta Matilde

“…Leaf-cutting ants are key organisms because their role as primary consumers and potential agricultural pests. However, their foraging ecology was mostly…”
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Three-Dimensional Microfabricated Broadband Patch Antenna for WiGig Applications by Mopidevi, H., Hunerli, H. V., Cagatay, E., Biyikli, N., Imbert, M., Romeu, J., Jofre, L., Cetiner, B. A.

“…The design, microfabrication, and characterization of a broadband patch antenna capable of covering the entire IEEE 802.11ad (WiGig) frequency band (57-66 GHz)…”
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Reduced Overhead Training for Multi Reconfigurable Antennas with Beam-Tilting Capability by Eslami, H, Sukumar, C P, Rodrigo, D, Mopidevi, S, Eltawil, A M, Jofre, L, Cetiner, B A

“…This paper proposes low overhead training techniques for a wireless communication system equipped with a Multifunctional Reconfigurable Antenna (MRA) capable…”
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Microwave reflection tomographic array for damage detection of civil structures by Yoo Jin Kim, Jofre, L., De Flaviis, F., Feng, M.Q.

“…Microwave tomographic imaging technology using a bifocusing operator has been developed in order to detect the internal voids/objects inside concrete…”
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Short Asymmetrical Inductive Dipole Antenna for Direct Matching to High-Q Chips by Ballesteros, C., Vega, S., Santos, M. C., Jofre-Roca, L.

“…A planar antenna structure based on a folded asymmetrical dipole is presented, whose geometrical parameters are seen to independently determine either the real…”
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Optically Beamformed Wideband Array Performance by Jofre, L., Stoltidou, C., Blanch, S., Mengual, T., Vidal, B., Marti, J., McKenzie, I., del Cura, J.M.

“…Optical beamforming networks (OBFNs) are an interesting alternative for the design of wideband antenna arrays, mainly due to their low losses and weight, their…”
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Spherical wave near-field imaging and radar cross-section measurement by Broquetas, A., Palau, J., Jofre, L., Cardama, A.

“…The paper presents a new inverse synthetic aperture radar (ISAR) algorithm intended for radar cross-section (RCS) imaging and measurement from scattered…”
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Optimization of Linear Multielement Antennas for Selection Combining by Means of a Butler Matrix in Different MIMO Environments by Grau, A., Romeu, J., Blanch, S., Jofre, L., De Flaviis, F.

“…An optimized linear multielement antenna (MEA) is presented for selection combining schemes that improves the selection diversity gain and selection diversity…”
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Optical phase-based beamformer using MZM SSB modulation combined with crystal polarization optics and a spatial light modulator by Mengual, T., Vidal, B., Stoltidou, Chr, Blanch, S., Martí, J., Jofre, L., McKenzie, I., del Cura, J.M.

“…The performance of a widely tunable phase-based beamformer for phased array antennas using a new technique to cross-polarized the carrier and the sideband, in…”
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UWB Short-Range Bifocusing Tomographic Imaging by Jofre, L., Toda, A.P., Montana, J., Carrascosa, P.C., Romeu, J., Blanch, S., Cardama, A.

“…In this paper, the capability of ultra-wideband (UWB) sensor arrays for tomographic imaging of electrically large objects in 2-D and 3-D environments is…”
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Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation by León, T., López, J., Torres, R., Grau, J., Jofre, L., Cortina, J.-L.

“…Electrodialysis with bipolar membranes (EDBM) has drawn attention motivated by their application in generating reagents from salts. Due to the water splitting…”
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Simplified WDM optical beamforming network for large antenna arrays by Vidal, B., Mengual, T., Ibanez-Lopez, C., Marti, J., McKenzie, I., Vez, E., Santamaria, J., Dalmases, F., Jofre, L.

“…A novel approach to simplify optical beamforming networks based on wavelength-division-multiplexing (WDM) optical sources and a dispersive medium is proposed…”
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Miniature multi-element antenna for wireless communications by Jofre, L., Cetiner, B.A., De Flaviis, F.

“…We present a novel broad-band miniature antenna and employ it in a multi-element geometry with diversity capabilities for wireless communications. This antenna…”
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Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence by Pizzi, F., Rahmani, M., Romera-Castillo, C., Peters, F., Grau, J., Capuano, F., Jofre, L.

“…The dynamics and aggregation of microplastics in marine environments are investigated through high-fidelity direct numerical simulations with Lagrangian…”
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