1,721,270 research outputs found
Application of computational modeling and simulation for the prediction and optimization of time-cost performance in building construction projects and processes.
No full textIlustracionesTradicionalmente la industria de la construcción se ha caracterizado por su reticencia al uso de tecnologías digitales y adopción de prácticas que permitan avanzar a una cultura de innovación y reinventarse frente a sus pobres resultados, especialmente frente a su capacidad de estimación de plazos y presupuestos. Sus recurrentes retrasos y sobrecostos en la ejecución de proyectos, así como particularmente un rezago en la adopción de nuevas tecnologías no le han permitido capitalizar avances de la ciencia y tecnología aplicable al sector para elevar su productividad (WEF, 2016) (Rahman et al., 2020). Otro aspecto preocupante es la forma en que se concibe el ciclo de vida de los proyectos, ya que reflejan una fragmentación (Mossman, 2020) que condiciona el desarrollo del aprendizaje por experiencia, es decir, lograr cambios adaptativos a los inputs de su entorno (Witteman, 1997) y aprovechar la evaluación de datos que le pueden servir como base de pronóstico (CII, 2013 a). La referenciación en otras industrias y la articulación de escenarios CAE (Clúster-Academia-Empresa) (Rúa Machado et al., 2022) pueden ser una vía para consolidar criterios y establecer formas de conocimiento basados en datos y uso tecnologías. Esta propuesta de investigación plantea el uso de nuevas tecnologías, como el modelamiento y la simulación computacional, para incentivar la apropiación de prácticas que permitan la predictibilidad y capacidad de estimar y optimizar tiempo-costo a partir de datos documentados su en el sector AECO (Architecture, Engineering, Construction and Operactions) en Colombia, aportando al desarrollo de confiabilidad y la disminución de sobrecostos y retrasos en las obras. (Tomado de la fuente)Traditionally, the construction industry has been characterized by its reluctance to use digital technologies and adopt practices that allow for advancing towards a culture of innovation and reinventing itself in the face of its poor results, especially regarding its ability to estimate timelines and budgets. Its recurrent delays and cost overruns in project execution, as well as a particular lag in the adoption of new technologies, have not allowed it to capitalize on advances in science and technology applicable to the sector to increase its productivity (WEF, 2016) (Rahman et al., 2020). Another concerning aspect is the way in which the project life cycle is conceived, as it reflects a fragmentation (Mossman, 2020) that conditions the development of learning from experience, that is, achieving adaptive changes to the inputs from its environment (Witteman, 1997) and taking advantage of data evaluation that can serve as a basis for forecasting (CII, 2013 a). Benchmarking in other industries and the articulation of CAE (ClusterAcademia-Enterprise) scenarios (Rúa Machado et al., 2022) can be a way to consolidate criteria and establish forms of knowledge based on data and use of technologies. This research proposal suggests the use of new technologies, such as computational modeling and simulation, to encourage the appropriation of practices that allow for predictability and the ability to estimate and optimize time-cost based on documented data in the AECO (Architecture, Engineering, Construction and Operations) sector in Colombia, contributing to the development of reliability and the reduction of cost overruns and delays in construction works.MaestríaMagíster en ConstrucciónInnovación y Optimización de la GestiónTecnología en la construcción.Construcción Y Hábitat.Sede Medellí
Flammability features of native and non-native woody species from the southernmost ecosystems: a review
No full textOTO y AFR están financiados por ANID/Basal FB210015 (CENAMAD) y agradecen el apoyo recibido de ANID SCIA-Anillo ACT210052. AFR reconoce subvenciones DIUFRO PP23-0016 y Capital Semilla PCS 2021/017 CENAMAD. RAG gracias a ANID/Basal FB210006. Dos revisores hicieron una serie de comentarios y sugerencias que mejoraron enormemente el manuscrito
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Casaviva
No full textPráctica Académica (Diseño Industrial)-Universidad Católica de Pereira. Facultad de Arquitectura y Diseño, Pereira, 1999Universidad Católica de Pereira ; Tutor : Ramirez, Andres Felip
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