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Resultats globals: 68 registres trobats en 0.12 segons.
Articles, 60 registres trobats
Documents de recerca, 8 registres trobats
Articles 60 registres trobats  1 - 10següentfinal  anar al registre:
1.
360°-Beam-Steering Low-Sidelobe Time Reversal Microwave Power Transfer by Superposition of Multiple Weighted Radiation Modes / Hu, Lin (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ; Parrón Granados, Josep (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ; Paco Sánchez, Pedro Antonio de (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ; Zhao, Deshuang (University of Electronic Science and Technology of China) ; Wang, Bing-Zhong (University of Electronic Science and Technology of China)
This letter proposes a 360°-beam-steering low-sidelobe time reversal microwave power transfer (TR-MPT) method. The beam steering is implemented by only one circular patch antenna fabricated with multiple feeding ports. [...]
2024 - 10.1109/LAWP.2023.3346878
IEEE antennas and wireless propagation letters, Vol. 23, Issue 3 (March 2024) , p. 1134-1138  
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2.
13 p, 540.6 KB Volume entropy, weighted girths and stable balls on graphs / Balacheff, Florent Nicolas (University of Geneva. Department of Mathematics)
We prove new isoperimetric inequalities on graphs involving quantities linked with concepts from differential geometry. First, we bound from above the product of the volume entropy (defined as the log of the exponential growth rate of the universal cover) and the girth of weighted graphs in terms of their cyclomatic number. [...]
2007 - 10.1002/jgt.20236
Journal of Graph Theory, Vol. 55, Issue 4 (February 2007) , p. 291-305  
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3.
18 p, 2.2 MB Interpretation of coal compositional data on whole-coal versus ash bases through the weighted symmetric pivot coordinates method / Xu, Na (China University of Mining and Technology (Beijing). College of Geoscience and Survey Engineering) ; Wang, Ru (China University of Mining and Technology (Beijing). College of Geoscience and Survey Engineering) ; Engle, Mark A. (University of Texas at El Paso. Department of Earth, Environmental and Resource Sciences) ; Zhu, Wei (China University of Mining and Technology (Beijing). College of Geoscience and Survey Engineering) ; Li, Qiang (China University of Mining and Technology (Beijing). College of Geoscience and Survey Engineering) ; Wang, Zhiwei (China University of Mining and Technology (Beijing). College of Geoscience and Survey Engineering)
In addition to approaches based on a number of physical and chemical analyses, statistical methods have been commonly used for determining the modes of occurrence of elements in coal. The Pearson correlation coefficient of element concentrations vs. [...]
2023 - 10.57645/20.8080.02.12
SORT : statistics and operations research transactions, Vol. 47 Núm. 2 (2023) , p. 345-362  
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4.
9 p, 1.5 MB Deep machine learning for meteor monitoring : Advances with transfer learning and gradient-weighted class activation mapping / Peña-Asensio, Eloy (Universitat Autònoma de Barcelona. Departament de Química) ; Trigo Rodríguez, Josep Maria (Institut de Ciències de l'Espai) ; Grèbol-Tomàs, Pau (Institut de Ciències de l'Espai) ; Regordosa-Avellana, David (Spanish Meteor Network) ; Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química)
In recent decades, the use of optical detection systems for meteor studies has increased dramatically, resulting in huge amounts of data being analyzed. Automated meteor detection tools are essential for studying the continuous meteoroid incoming flux, recovering fresh meteorites, and achieving a better understanding of our Solar System. [...]
2023 - 10.1016/j.pss.2023.105802
Planetary and Space Science, Vol. 238 (November 2023) , art. 105802  
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5.
9 p, 1.6 MB Microanatomical findings with relevance to trigeminal ganglion enhancement on post-contrast T1-weighted magnetic resonance images in dogs / Santifort, Koen M. (Small Animal Referral Hospital Hart van Brabant) ; Glass, Eric N. (Red Bank Veterinary Hospital) ; Pumarola i Batlle, Martí (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals) ; Aige Gil, Vicente (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
Trigeminal ganglion contrast enhancement (TGCE) is reported to be a normal and a common finding on magnetic resonance imaging studies of dogs, cats and humans. The intent of the present study was to describe the anatomical characteristics of the trigeminal ganglion, its surrounding structures, and histological features that are relevant to explain or hypothesize on the reason for TGCE on T1-weighted post-contrast MRI studies of the brain in dogs. [...]
2023 - 10.3389/fvets.2023.1256947
Frontiers in Veterinary Science, Vol. 10 (september 2023)  
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6.
8 p, 1.6 MB T1/T2-weighted ratio in multiple sclerosis : A longitudinal study with clinical associations / Boaventura de Oliveira, Mateus (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Sastre-Garriga, Jaume (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Garcia-Vidal, Aran (Hospital Universitari Vall d'Hebron) ; Vidal-Jordana, Angela (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Quartana, Davide (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Carvajal-Junco, René (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Auger, Cristina (Hospital Universitari Vall d'Hebron) ; Alberich, Manel (Hospital Universitari Vall d'Hebron) ; Tintoré, Mar (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Rovira, Alex (Hospital Universitari Vall d'Hebron) ; Montalban, Xavier (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Pareto, Deborah (Hospital Universitari Vall d'Hebron) ; Universitat Autònoma de Barcelona
Background: T1w/T2-w ratio has been proposed as a clinically feasible MRI biomarker to assess tissue integrity in multiple sclerosis. However, no data is available in the earliest stages of the disease and longitudinal studies analysing clinical associations are scarce. [...]
2022 - 10.1016/j.nicl.2022.102967
NeuroImage, Vol. 34 (2022) , p. 102967  
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7.
23 p, 416.9 KB Weighted norm inequalites and indices / Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Milman, Mario (Florida Atlantic University. Department of Mathematics)
We extend and simplify several classical results on weighted norm inequalities for classical operators acting on rearrangement invariant spaces using the theory of indices. As an application we obtain necessary and sufficient conditions for generalized Hardy type operators to be bounded on Λp(w), Λp,∞ (w), Γp(w) and Γp,∞(w).
2006
Journal of Function Spaces and Applications, Vol. 4, Issue 1 (2006) , p. 43-71  
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8.
2 p, 186.0 KB Correction to : Lu et al. weighted gene co-expression network analysis identifies key modules and hub genes associated with mycobacterial infection of human macrophages. antibiotics 2021, 10, 97 / Lu, Lu (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular) ; Waddell, Simon J. (University of Sussex. Brighton and Sussex Medical School) ; Boix i Borràs, Esther (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular) ; Wei, RanLei (Sichuan University. Laboratory of Omics Technology and Bioinformatics) ; Bhakta, Sanjib (University of London. Department of Biological Sciences)
2021 - 10.3390/antibiotics10070792
Antibiotics, Vol. 10, Issue 7 (June 2021) , art. 792  
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9.
14 p, 1.1 MB Polygenic markers in patients diagnosed of autosomal dominant hypercholesterolemia in Catalonia : distribution of weighted LDL-c-raising SNP scores and refinement of variant selection / Martín-Campos, Jesús Maria (Institut d'Investigació Biomèdica Sant Pau) ; Ruiz-Nogales, Sheila (Institut d'Investigació Biomèdica Sant Pau) ; Ibarretxe, Daiana (Hospital Universitari Joan XXIII de Tarragona. Institut d'Investigació Sanitària Pere Virgili) ; Ortega, Emilio (Hospital Clínic. Servei d'Endocrinologia i Nutrició) ; Sánchez-Pujol, Elisabet (Hospital General de Granollers) ; Royuela-Juncadella, Meritxell (Altahia. Xarxa Assistencial Universitària de Manresa. Servei de Medicina Interna) ; Vila, Àlex (Hospital de Figueres) ; Guerrero, Carolina (Consorci Sanitari Hospital de Terrassa) ; Zamora, Alberto (Hospital de Blanes. Corporació de Salut del Maresme i La Selva. Servei de Medicina Interna) ; Soler i Ferrer, Cristina (Hospital de Santa Caterina (Salt, Girona)) ; Arroyo, Juan Antonio (Institut d'Investigació Biomèdica Sant Pau) ; Carreras, Gemma (Universitat Autònoma de Barcelona. Departament de Pediatria, Obstetrícia i Ginecologia i Medicina Preventiva i Salut Pública) ; Martínez-Figueroa, Susana (Institut d'Investigació Biomèdica Sant Pau) ; Roig, Rosa (Institut d'Investigació Biomèdica Sant Pau) ; Plana, Núria (Hospital Universitari Joan XXIII de Tarragona. Institut d'Investigació Sanitària Pere Virgili) ; Blanco Vaca, Francisco (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular)
Familial hypercholesterolemia (FH) is associated with mutations in the low-density lipoprotein (LDL) receptor (LDLR), apolipoprotein B (APOB), and proprotein convertase subtilisin/kexin 9 (PCSK9) genes. [...]
2020 - 10.3390/biomedicines8090353
Biomedicines, Vol. 8, Issue 9 (September 2020) , art. 353  
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10.
5 p, 1.1 MB Value of diffusion-weighted magnetic resonance imaging in the diagnosis of pyomyoma / Peris, Helena (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; del Riego, Javier (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; Criado, Eva (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; García-Chamón, Rosa Belén (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; Vall, Elisenda (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; Mayoral, María (Hospital Clínic i Provincial de Barcelona) ; Martín, Amaya (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; Universitat Autònoma de Barcelona. Departament de Medicina
Pyomyomas are rare lesions that develop from the suppurative degeneration of ischemic leiomyomas. Pyomyomas can lead to sepsis, so early diagnosis is crucial. Due to their rarity and often nonspecific findings on ultrasonography and computed tomography diagnosis is often delayed. [...]
2021 - 10.1016/j.radcr.2021.10.018
Radiology Case Reports, Vol. 17 Num. 1 (January 2022) , p. 137-141  
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Articles : 60 registres trobats   1 - 10següentfinal  anar al registre:
Documents de recerca 8 registres trobats  
1.
23 p, 259.3 KB Bernstein's problem on weighted polynomial approximation / Poltoratski, Alexei ; Centre de Recerca Matemàtica
We formulate a necessary and sufficient condition for polynomials to be dense in a space of continuous functions on the real line, with respect to Bernstein's weighted uniform norm. Equivalently, for a positive finite measure [lletra "mu" minúscula de l'alfabet grec] on the real line we give a criterion for density of polynomials in Lp[lletra "mu" minúscula de l'alfabet grec entre parèntesis].
Centre de Recerca Matemàtica 2011 (Prepublicacions del Centre de Recerca Matemàtica ; 1061)  
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2.
28 p, 245.7 KB Beurling-Landau densities of weighted Fekete sets and correlation kernel estimates / Ameur, Yacin ; Ortega Cerdà, Joaquim ; Centre de Recerca Matemàtica
Vegeu el resum a l'inici del document del fitxer adjunt.
Centre de Recerca Matemàtica 2011 (Prepublicacions del Centre de Recerca Matemàtica ; 1044)  
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3.
18 p, 223.1 KB Weighted norm inequalities for Fourier transforms of radial functions / Gorbachev, D. ; Liflyand, E. ; Tikhonov, Sergey Yu. ; Centre de Recerca Matemàtica
"Vegeu el resum a l'inici del document del fitxer adjunt".
Centre de Recerca Matemàtica 2010 (Prepublicacions del Centre de Recerca Matemàtica ; 937)  
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4.
25 p, 308.7 KB Sharp weighted bounds for fractional integral operators / Lacey, Michael T. (Georgia Institute of Technology (Atlanta, Estats Units d'Amèrica)) ; Moen, Kabe (University of Kansas. Department of Mathematics) ; Pérez Moreno, Carlos (Universidad de Sevilla) ; Torres, Rodolfo H. (University of Kansas. Department of Mathematics) ; Centre de Recerca Matemàtica
The relationship between the operator norms of fractional integral operators acting on weighted Lebesgue spaces and the constant of the weights is investigated. Sharp bounds are obtained for both the fractional integral operators and the associated fractional maximal functions. [...]
Centre de Recerca Matemàtica 2009 (Prepublicacions del Centre de Recerca Matemàtica ; 861)  
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5.
18 p, 229.3 KB Dividends and weighted values in games with externalities / Macho Stadler, Inés ; Pérez-Castrillo, David ; Wettstein, David ; Universitat Autònoma de Barcelona. Unitat de Fonaments de l'Anàlisi Econòmica ; Institut d'Anàlisi Econòmica
We consider cooperative environments with externalities (games in partition function form) and provide a recursive definition of dividends for each coalition and any partition of the players it belongs to. [...]
2008 (Working papers ; 758.08)  
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6.
30 p, 255.0 KB Weighted approval voting / Massó, Jordi ; Vorsatz, Marc ; Universitat Autònoma de Barcelona. Unitat de Fonaments de l'Anàlisi Econòmica ; Institut d'Anàlisi Econòmica
To allow society to treat unequal alternatives distinctly we propose a natural extension of Approval Voting by relaxing the assumption of neutrality. According to this extension, every alternative receives ex-ante a non-negative and finite weight. [...]
2006 (Working papers ; 668.06)  
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7.
14 p, 168.6 KB Weighted limits in simplicial homotopy theory / Gambino, Nicola ; Centre de Recerca Matemàtica
We extend the theory of Quillen adjunctions by combining ideas of homotopical algebra and of enriched category theory. Our results describe how the formulas for homotopy colimits of Bousfield and Kan arise from general formulas describing the derived functor of the weighted colimit functor.
Centre de Recerca Matemàtica 2008 (Prepublicacions del Centre de Recerca Matemàtica ; 790)  
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8.
33 p, 277.2 KB Weighted Hardy spaces for the unit disc: approximation properties / Boivin, André ; Gauthier, Paul M. ; Zhu, Changzhong ; Centre de Recerca Matemàtica
In this paper we study basic properties of the weighted Hardy space for the unit disc with the weight function satisfying Muckenhoupt's (Aq) condition, and study related approximation problems (expansion, moment and interpolation) with respect to two incomplete systems of holomorphic functions in this space.
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 735)  
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