bluuebunny/crossref_metadata_2025_split huggingface dataset:
El videoarte, creatividad salvaje y disección social:
Authors: Obradors Matilde 
Published: January 2019

Desde los años 60, la práctica del vídeo evoluciona en continua discordia con el lenguaje televisivo e introduce términos como “composición multimedia”, puesto que aglutina diferentes expresiones contemporáneas. Los videoartistas predijeron la situación de las actuales "autopistas de la información”. El vídeoarte muestra de manera perturbadora una creatividad que podríamos denominar “salvaje” y se le considera pionero del carácter híbrido transmediático. El presente artículo aborda la identidad de la práctica videográfica y analiza el Barcelona Loop Festival, y en concreto, el certamen del año 2013. La metodología se ha basado en la revisión bibliográfica y el posterior análisis de los ejes preponderantes que conforman las narrativas de la muestra. Analizar las piezas de video del Festival Loop que nació en 2003, en Barcelona, como la primera feria a nivel mundial dedicada exclusivamente al videoarte, nos permite tomar el pulso a las tendencias que adopta la imagen en movimiento y conocer los fundamentos creativos que ponen en práctica actualmente los artistas.
Intereses y perspectivas formativas en economía social y solidaria de los estudiantes universitarios
Authors: Hernández Arteaga Isabel , Pérez Muñoz Colombia , Rua Castañeda Sohely 
Published: January 2019

Este artículo es resultado de un proceso de investigación educativa, cuyo objetivo fue analizar e interpretar las preguntas que formulan estudiantes universitarios sobre la economía social y solidaria, dando cuenta de su interés y perspectivas formativas. El estudio se realizó con la participaron de 96 jóvenes universitarios, que en su plan de estudios de pregrado contempla la formación en economía social y solidaria y que para el momento del estudio se encontraban matriculados en uno de los cursos específicos sobre el tema. El estudio concluye que los estudiantes demandan aprendizajes significativos y una participación activa en los procesos de construcción de conocimiento. Asimismo, se identifica la necesidad del desarrollo de enfoques educativos que logren construir mayores niveles de complejidad del pensamiento del estudiante sobre las mencionadas temáticas. El estudio replicado en otros contextos de educación superior puede contribuir al mejoramiento de enfoques, contenidos y metodologías que permitan la mayor articulación de la formación con un escenario de desempeño profesional en el sector de la economía solidaria desde la innovación, el emprendimiento o la vinculación laboral a organizaciones ya existentes en los territorios.
Els mecanismes de referència en la interfície gramàtica-discurs. Cohesió, coherència i cognició
Authors: Ribera i Condomina Josep E. , Marín Jordà Maria Josep , Alturo Monné Núria 
Published: January 2019

La cohesió referencial integra una sèrie de mecanismes gramaticals i lèxics de tipus fòric que estableixen lligams de caràcter sintàctic i semàntic entre les entitats discursives. Mitjançant la referència, els significats textuals s’entreteixeixen, de manera que es creen una sèrie de xarxes correferencials i de sentit a través de les quals s’encadenen els mots per contribuir a la cohesió textual.
Com a fenomen que inclou la pronominalització, l’el·lipsi o anàfora zero, la dixi textual (que es concreta bàsicament en l’ús no exofòric de demostratius) i una varietat de mecanismes de cohesió lèxica (relacions de repetició, reiteració i associació), la cohesió referencial se situa en la interfície entre el nivell gramatical i el pragmaticodiscursiu. D’una banda, explicita relacions sintacticosemàntiques de tipus estructural i jeràrquic entre els constituents oracionals; d’altra banda, palesa el grau d’activació de les entitats discursives en la memòria dels interlocutors i constitueix una evidència de l’organització discursiva, que permet interpretar la progressió temàtica i la coherència. Així doncs, la diversitat de mecanismes de referència es vincula a la cohesió textual, en el nivell microestructural; esdevé una empremta, palesa i palpable, de les relacions de coherència, en el nivell de la macroestructura, i permet resseguir els processos cognitius en què interactuen els interlocutors per tal de fer efectiva la comunicació –l’objectiu definitori del discurs– en el nivell contextual i pragmàtic.
Els castells de Corbera i de Cullera: de hisn musulmà a castrum cristià
Authors: Clari Hidalgo Pablo 
Published: January 2019

Resum: Durant l’època islàmica i els primers anys després de la conquesta, els castells, dins del territori valencià, van ser un dels elements més importants pel que fa a la vertebració de la societat valenciana. Al present treball anem a analitzar l’evolució de dos castells valencians, que encara que ambdós és troben pròxims, esdevenen dues versions diferents una vegada la conquesta va ser una realitat. Aquets són el castell de Corbera i Cullera. Ambdues construccions tenen un origen islàmic i per tant la seua funció original és similar protegir els habitants dels voltants, encara que després de la conquesta cadascun d’ells viurà un destí diferent marcat, en aquest cas, per la seua ubicació, o menys o més estratègica..Paraules clau: castell, conquesta, fortificació, Cullera, CorberaAbstract: During the Islamic period and the first years after the conquest, the valencian’s castles, were one of the most important elements regarding the vertebration of the valencian society. On the current academic paper, we are going to analyze the evolution of two valencian castles, even though both of them are close to each other. They become different versions, once the conquest became a reality. These are the castles of Corbera and Cullera. Both constructions have an Islamic origin and because of that their original function is similar, even thought, after the conquest everyone of them will live a different destiny, marked in this case, by their more or less strategic location.Keywords: castle, conquest, fortification, Cullera, Corbera
Canvi lexicosemàntic: salpuscar ‘esquitar’ i variants, un petit enigma
Authors: Martines Josep 
Published: January 2019

Resum: Aquest article mostra quin degué ser l’origen del verb salpuscar i la variant salbuscar, sinònim de l’actual esquitar o esquitxar . Subratlla les possibilitats que ofereixen els corpus textuals digitals i la necessitat de tenir present l’estudi contrastiu de llengües (especialment d’atendre l’occità) i la història de la cultura quan es fa semàntica i lexicologia diacròniques del català. Així mateix, s’hi apliquen nocions bàsiques de la semàntica cognitiva en l’estudi del canvi lingüístic. Paraules clau: semàntica i lexicologia diacròniques, etimologia, canvi semàntic en català, salpuscar, semàntica cognitiva.Abstract: This article shows what must have been the origin of the Catalan verb salpuscar and its variant salbuscar, synonym of the current verb esquitar o esquitxar (‘to splash’). It highlights the possibilities offered by digital textual corpora and the need to bear in mind the contrastive study of languages (especially when it comes to Occitan) and the cultural history when diachronic semantics and lexicology of Catalan are done. Likewise, basic notions of cognitive semantics are applied in the study of linguistic change. Keywords: diachronic semantics and lexicology, etymology, semantic change in catalan, salpuscar, cognitive semantics.
A protocol for a survey of patient perceptions about outpatient joint replacement surgery (The RAAPID survey)
Authors: Woolnough Taylor , Madden Kim , Adili Anthony , Khanna Vickas , deBeer Justin , Winemaker Mitchell , Wood Thomas , Tushinski Daniel 
Published: January 2019

Background: Total knee arthroplasty (TKA) and total hip arthroplasty (THA), are the second and third most common surgical procedures performed in Canada, accounting for more than 600,000 acute care bed days and over $1 billion CAD in healthcare spending. The demand for these procedures, both in Canada and internationally, is only expected to increase. Same-day discharge has been demonstrated to be safe and effective in properly selected patients and has the potential to greatly decrease the cost of THA and TKA, collectively referred to as total joint arthroplasty (TJA). The existing literature focuses on implementing outpatient TJA from the physician’s perspective. However, patient opinions do not always align with physician opinions. To date, only one study has explored patients’ perspectives regarding outpatient TJA; many questions remain unanswered. To effectively implement or expand outpatient joint replacement programs, detailed exploration of the patient perspective is necessary.
Methods: This study is a multicentre cross-sectional survey to primarily determine the proportion of patients who are open to outpatient TJA. Adult patients scheduled for primary TJA surgery or those who have received TJA surgery in the past year will be included in the survey. The secondary objectives of this survey are to determine patient characteristics associated with openness to outpatient TJA, describe patient concerns regarding outpatient TJA, and identify potential methods to increase patient comfort with outpatient TJA.
Discussion: Resource expenditure and clinical practice are increasingly guided by subjective patient outcomes, especially in the area of joint replacement. With the current focus on cost-efficiency in healthcare, there is increasing interest in outpatient TJA. By exploring how patients perceive outpatient TJA, this study may serve to guide the development of educational resources and programs to enhance and support outpatient TJA. Addressing concerns identified by patients in an evidence-based manner has the potential to improve patient satisfaction and outcomes in the growing trend of outpatient TJA.
Comparison of non-magnetic and magnetic beads multiplex assay for assessment of Plasmodium falciparum antibodies
Authors: Ondigo Bartholomew N. , Park Gregory S. , Ayieko Cyrus , Nyangahu Donald D. , Wasswa Ronald , John Chandy C. 
Published: January 2019

Background
New reagents have emerged allowing researchers to assess a growing number of vaccine-associated immune parameters. Multiplex immunoassay(s) are emerging as efficient high-throughput assays in malaria serology. Currently, commercial vendors market several bead reagents for cytometric bead assays (CBA) but relative performances are not well published. We have compared two types of bead-based multiplex assays to measure relative antibody levels to malarial antigens.

Methods
Assays for the measurement of antibodies to five Plasmodium falciparum vaccine candidates using non-magnetic and magnetic fluorescent microspheres were compared for their performances with a Bio-Plex200 instrument. Mean fluorescence intensity (MFI) was determined from individuals from western Kenya and compared to known positive and negative control plasma samples.

Results
P. falciparum recombinant antigens were successfully coupled to both non-magnetic and magnetic beads in multiplex assays. MFIs between the two bead types were comparable for all antigens tested. Bead recovery was superior with magnetic beads for all antigens. MFI values of stored non-magnetic coupled beads did not differ from freshly coupled beads, though they showed higher levels of bead aggregation.

Discussion
Magnetic and non-magnetic beads performed similarly in P. falciparum antibody assays. Magnetic beads were more expensive, but had higher bead recovery, were more convenient to use, and provided rapid and easy protocol manipulation. Magnetic beads are a suitable alternative to non-magnetic beads in malarial antibody serology.
In vivo evidence for pre‐symptomatic neuroinflammation in a MAPT mutation carrier
Authors: Bevan‐Jones W. Richard , Cope Thomas E. , Jones P. Simon , Passamonti Luca , Hong Young T. , Fryer Tim , Arnold Robert , Coles Jonathan P. , Aigbirhio Franklin I. , O'Brien John T. , Rowe James B. 
Published: January 2019

AbstractNeuroinflammation occurs in frontotemporal dementia, however its timing relative to protein aggregation and neuronal loss is unknown. Using positron emission tomography and magnetic resonance imaging to quantify these processes in a pre‐symptomatic carrier of the 10 + 16 MAPT mutation, we show microglial activation in frontotemporal regions, despite a lack of protein aggregation or atrophy in these areas. The distribution of microglial activation better discriminated the carrier from controls than did protein aggregation at this pre‐symptomatic disease stage. Our findings suggest an early role for microglial activation in frontotemporal dementia. Longitudinal studies are needed to explore the causality of this pathophysiological association.
Integrating PGM‐Free Catalysts into Catalyst Layers and Proton Exchange Membrane Fuel Cell Devices
Authors: Banham Dustin , Choi Ja‐Yeon , Kishimoto Takeaki , Ye Siyu 
Published: January 2019

AbstractWhile proton exchange membrane fuel cells (PEMFCs) continue to expand into commercial markets, there is still pressure to decrease cost. One of the largest opportunities to reducing cost is to reduce the amount of platinum‐group metal (PGM) catalysts used in the electrodes (particularly the cathode). Over the past decade, exciting advances in the Fe/N/C family of PGM‐free oxygen reduction reaction (ORR) catalysts has provided great optimism that not only can PGMs at the cathode be reduced but possibly be completely eliminated. In fact, in September 2017, Ballard Power Systems announced the commercialization of the world's first PEMFC product to utilize a PGM‐free catalyst at the cathode (FCgen‐micro (non‐precious‐metal catalyst, NPMC)). However, for these catalysts to be used in more demanding applications, an improved understanding and new design approaches for PGM‐free catalyst layers will be required. Herein, some of the latest research on both modeling and experimental studies in the field of PGM‐free catalyst layer research are discussed. In addition, a short discussion on Ballard's new NPMC is provided.
High‐Precision Stereolithography of Biomicrofluidic Devices
Authors: Kuo Alexandra P. , Bhattacharjee Nirveek , Lee Yuan‐Sheng , Castro Kurt , Kim Yong Tae , Folch Albert 
Published: January 2019

AbstractStereolithography (SL) is emerging as an attractive alternative to soft lithography for fabricating microfluidic devices due to its low cost and high design efficiency. Low molecular weight poly(ethylene glycol)diacrylate (MW = 258) (PEG‐DA‐258) has been used for SL 3D‐printing of biocompatible microdevices at submillimeter resolution. However, 3D‐printing resins that simultaneously feature high transparency, high biocompatibility, and high resolution are still lacking. It is found that photosensitizer isopropyl thioxanthone can, in a concentration‐dependent manner, increase the absorbance of the resin (containing PEG‐DA‐258 and photoinitator Irgacure‐819) by over an order of magnitude. This increase in absorbance allows for SL printing of microdevices at sub pixel resolution with commercially available desktop printers and without compromising transparency or biocompatibility. The assembly‐free, rapid (<15 h) 3D‐printing of a variety of complex 3D microfluidic devices such as a 3D‐fluid router, a passive chaotic micro‐mixer, an active micro‐mixer with pneumatic microvalves, and high‐aspect ratio (37:1) microchannels of single pixel width is demonstrated. These manufacturing capabilities are unavailable in conventional microfluidic rapid prototyping techniques. The low absorption of small hydrophobic molecules and microfluidic labeling of cultured mammalian cells in 3D‐printed PEG‐DA‐258 microdevices is demonstrated, indicating the potential of PEG‐DA‐based fabrication of cell‐based assays, drug discovery, and organ‐on‐chip platforms.
A Simplified Approach for Obtaining Optical Properties of VO2 Thin Films, and Demonstration of Infrared Shape‐Shifting Devices
Authors: Figueroa José , Cao Yunqi , Dsouza Henry , Pastrana Juan , Sepúlveda Nelson 
Published: January 2019

AbstractMicrometer‐sized VO2‐based devices with integrated resistive heaters of different configurations are fabricated. Quality of the VO2 films is confirmed by measuring the characteristic drop in transmittance and negative differential emissivity for these films. A two‐interface model for optical transmittance, reflectance, and absorbance is presented. This method and analytic model presents an advantage over most typically used approaches in that it does not require direct measurements of the material's optical constants to estimate transmittance. By combining the substrate and the VO2 film into one layer with a reduced optical admittance, the two‐interface model is reduced to a single‐layer model. Moreover, the present work demonstrates the implementation of the developed VO2‐based devices in adaptive camouflage and shape‐converting applications. Electrical pulses are used to program different emissivity states to convert geometric shapes inside a fully integrated VO2‐based electro‐optical window. This results in the reconfiguring of thermal images to either create new shapes, or shift from one to another.
Impact of Eumelanin–PEDOT Blending: Increased PEDOT Crystalline Order and Packing–Conductivity Relationship in Ternary PEDOT:PSS:Eumelanin Thin Films
Authors: Migliaccio Ludovico , Altamura Davide , Scattarella Francesco , Giannini Cinzia , Manini Paola , Gesuele Felice , Maglione Maria Grazia , Tassini Paolo , Pezzella Alessandro 
Published: January 2019

AbstractA recently developed protocol allows to prepare high quality thin films integrating eumelanin pigment with standard commercial poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). The new blend combines noteworthy water stability and substrate adhesion with valuable electro‐optical properties, so it can be used as anodic material in indium tin oxide‐free organic light emitting diodes. Starting from these results, the present work systematically addresses the parameters affecting the blend conductivity. In particular, X‐ray scattering analysis discloses that low quantities of eumelanin modifies molecular packing of the ternary blend, mainly in intermolecular distances and possibly in the degree of crystalline order of PEDOT, having anyway very little effect on the decay of the blend conductivity. Because of the synergetic effects observed here between the eumelanin and the PEDOT:PSS, this study provides a promising ground to access multifunctional materials for applications in advanced electronic devices and bioelectronics.
Enhanced Seebeck Effect of a MAPbBr3 Single Crystal by an Organic and a Metal Modified Layer
Authors: Sun Lin , Xu Ling , Xiong Yan , Wu Ping , Xie Guo , Hu Bin 
Published: January 2019

AbstractThe organic–inorganic hybrid lead halide perovskite single crystal has drawn much attention of researchers for excellent characteristics, such as more excellent stability than the polycrystalline film. However, during the crystal preparation process, there are inevitably generated surface defect states, which seriously affect the charge transport properties of the single crystal. In this article, the MAPbBr3 single crystal is prepared by the inverse temperature crystallization method, the semiconductor characteristics of the crystal surface defect states are studied by the Seebeck effect method, and the crystal Seebeck coefficient is enhanced. It is confirmed that there are N‐type defect states on the surface of the MAPbBr3 single crystal. Then the organic semiconductor layer and metal surface modified layer are utilized to reduce the concentration of defects and got the enhancement of the Seebeck coefficient of MAPbBr3 single crystal. At last, the Au/MAPbBr3/PFO/Au structure device is designed and prepared to improve the thermoelectric properties of the MAPbBr3 single crystal. Results show that the thermal voltage keeps increasing, and the Seebeck coefficient is also enhanced.
C−C Bond Formation of Benzyl Alcohols and Alkynes Using a Catalytic Amount of KOtBu: Unusual Regioselectivity through a Radical Mechanism
Authors: Kumar Amit , Janes Trevor , Chakraborty Subrata , Daw Prosenjit , von Wolff Niklas , Carmieli Raanan , Diskin‐Posner Yael , Milstein David 
Published: January 2019

AbstractWe report a C−C bond‐forming reaction between benzyl alcohols and alkynes in the presence of a catalytic amount of KOtBu to form α‐alkylated ketones in which the C=O group is located on the side derived from the alcohol. The reaction proceeds under thermal conditions (125 °C) and produces no waste, making the reaction highly atom efficient, environmentally benign, and sustainable. Based on our mechanistic investigations, we propose that the reaction proceeds through radical pathways.
Improved toughness of poly(ether‐block‐amide) via melting blending with thermoplastic polyurethane for biomedical applications
Authors: Xue Yunyun , Tang Zhihong , Qin Minglin , Yu Muhuo , Li Zhaomin 
Published: January 2019

ABSTRACTBiocompatible polyether‐block‐amide (PEBA) copolymers have been widely applied in invasive medical devices. Due to the high hard segment ratios and poor toughness, PEBAs generally suffer from low fracture extensibility, large brittleness, and low compliance. Modification of PEBA with thermoplastic polyurethane (TPU) elastomer via melting blending is thus needed to improve the toughness. Mechanical experiments exhibited that when the content of TPU was 3% (w/w), the elongation at break and the notched impact strength of PEBA/TPU composite were improved by 12.4 and 30.5%, respectively. Field emission scanning electron microscopy results illustrated that there existed two toughening mechanisms in PEBA/TPU composites, including the crazing with a shear‐yield mechanism and the single‐layer crack extension mechanism. Moreover, Fourier transform infrared spectroscopy revealed that the intermolecular interaction between PEBA and TPU was enhanced due to hydrogen bonding, leading to the tensile mechanical properties and toughness increased. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47397.
Characterization of 30 microsatellite markers in distylous Primula sinolisteri (Primulaceae) using HiSeq sequencing
Authors: Wang Xinjia , Zhong Li , Wu Zhikun , Sun Huaying , Wang Hong , Li Dezhu , Barrett Spencer C. H. , Zhou Wei 
Published: January 2019

Premise of the StudyMicrosatellite markers were developed for Primula sinolisteri, a perennial distylous herb belonging to section Obconicolisteri (Primulaceae), to facilitate future investigations of the population genetics and mating patterns of populations in this species.Methods and ResultsWe developed 30 microsatellite markers for P. sinolisteri using HiSeq X‐Ten sequencing and measured polymorphism and genetic diversity in a sample of 36 individuals from three natural populations. The markers displayed relatively high polymorphism, with the number of observed alleles per locus ranging from one to 19 (mean = 4.42). The observed and expected heterozygosity ranged from 0–1.000 and 0.083–0.882, respectively. Twenty‐nine of the loci were also successfully amplified in homostylous P. sinolisteri var. aspera.ConclusionsThe microsatellite markers we have identified in P. sinolisteri provide powerful tools for investigating patterns of population genetic diversity and the evolutionary relationships between heterostyly and homostyly in this species.