1,721,359 research outputs found
"La gente del barrio es muy trabajadora". Un análisis de las experiencias residenciales y los imaginarios urbanos en un barrio de la ciudad de Rafaela, Argentina
No full textEn América Latina, el acceso a la vivienda se constituyó como un problema histórico. En Argentina, los programas de construcción de viviendas del Fondo Nacional de la Vivienda tuvieron como objetivo garantizar el acceso al hábitat y contrarrestar el déficit habitacional. A partir de un proyecto colaborativo de intervención-investigación, con base en un trabajo de campo cualitativo con entrevistas semiestructuradas y fotografías, este artículo se propone reflexionar sobre las experiencias residenciales y los imaginarios urbanos de vecinos y vecinas que habitan un barrio surgido de un programa de viviendas en 1986 en la ciudad de Rafaela, provincia de Santa Fe, Argentina. Partimos del supuesto de que las experiencias residenciales en torno al acceso a la vivienda y a la consolidación de un barrio construyen imaginarios urbanos que se sostienen a lo largo del tiempo y disputan sentidos sobre la ciudad.Fil: Zenklusen, Denise. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Universidad Nacional de Rafaela. Centro de Transferencia y Tecnología (CIT Rafaela); ArgentinaFil: Zenklusen, Denise. Universidad Nacional de Rafaela. Facultad de Ciencias Sociales y Humanidades; ArgentinaFil: Batiston, Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Universidad Nacional de Rafaela. Centro de Transferencia y Tecnología (CIT Rafaela); ArgentinaFil: Batistón, Victoria. Universidad Nacional de Rafaela. Facultad de Ciencias Sociales y Humanidades; ArgentinaFil: Russo, Mario. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Universidad Nacional de Entre Ríos, Instituto de Estudios Sociales; Argentina.Fil: Russo, Mario. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Universidad Nacional de Rafaela. Centro de Transferencia y Tecnología (CIT Rafaela); ArgentinaFil: Russo, Mario. Universidad Nacional de Rafaela. Facultad de Ciencias Sociales y Humanidades, Facultad de Tecnologías e Innovación para el Desarrollo; Argentin
In Reference to Real‐World Adverse Events After Type 2 Biologic use in Chronic Rhinosinusitis with Nasal Polyps
Full text linkSurrogate-based optimization of FFF build orientation for enhanced tensile strength, flatness, and surface roughness
No full textThe performance of parts produced using fused filament fabrication, a widely adopted additive manufacturing technology, is significantly influenced by build orientation. While previous studies have explored the effects of part orientation on mechanical and geometrical properties individually, their simultaneous interactions remain underexplored. This study addresses this gap by investigating the combined impact of build orientation, defined by three angles (
), on tensile strength, flatness deviation, and surface roughness of PET-G (Polyethylene Terephthalate Glycol) specimens. The methodology consists of two stages: (i) an experimental campaign to establish the relationships between orientation angles and the output variables, and (ii) a surrogate-based optimization approach, employing the weighted-sum method and genetic algorithm to identify configurations that achieve optimal compromises between mechanical and geometrical properties. Results demonstrate a strong dependency of all outputs on the orientation angles, particularly the out-of-plane rotation, and a negative correlation between tensile strength and geometrical quality metrics. Optimal performance is confined to specific regions of the input space, emphasizing the importance of a precise orientation control. A graphical approach, inspired by Voronoi-like regions, illustrates the interdependencies among outputs and maps achievable compromises in the output space. These optimal zones correspond to limited regions in the input space. Moving away from these configurations results in a rapid decline in performance, underscoring the sensitivity of the process to build orientation and the need for tightly defined parameters to ensure high-quality parts
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Simultaneous impact of build orientation on mechanical properties, geometrical measurements and surface roughness in material extrusion manufacturing
No full textPurpose
This paper aims to investigate how the build orientation simultaneously affects the tensile properties, geometrical measurements and surface roughness in material extrusion (MEX) produced parts.
Design/methodology/approach
An extensive experimental campaign was designed and carried out to elucidate the relationship between the rotation angles (input), defining the part orientation within the build volume, and the (output) variables measured by using 3D models reconstruction, roughness tester and tensile testing machine. Response surface methodology is used to capture the trend of each output relative to the input, while principal component analysis is used to identify relationships among outputs, providing a holistic understanding of how build orientation simultaneously influences mechanical properties, geometrical measurements and surface characteristics.
Findings
The study reveals that build orientation significantly affects nearly all output variables, with a pronounced dependency on the out-of-plane rotation angle. A key finding is the inverse correlation between mechanical strength and both geometrical measurements and surface roughness. This indicates that optimizing build orientation can enhance mechanical strength while minimizing geometrical defects.
Originality/value
This research, a newer addition to the existing literature, contributes to the field of additive manufacturing (AM) by offering an innovative analysis of the interaction between mechanical properties, geometric precision and surface roughness in relation to build orientation. It enhances the understanding of MEX processes and provides valuable insights into optimizing build orientation, thereby improving the competitiveness of AM over traditional production methods
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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