1,721,108 research outputs found
Life-Cycle of Structures and Infrastructure Systems
No full textLife-Cycle of Structures and Infrastructure Systems collects the lectures and papers presented at IALCCE 2023 – The Eighth International Symposium on Life-Cycle Civil Engineering held at Politecnico di Milano, Milan, Italy, 2-6 July, 2023. This Open Access Book contains the full papers of 514 contributions, including the Fazlur R. Khan Plenary Lecture, nine Keynote Lectures, and 504 technical papers from 45 countries.
The papers cover recent advances and cutting-edge research in the field of life-cycle civil engineering, including emerging concepts and innovative applications related to life-cycle design, assessment, inspection, monitoring, repair, maintenance, rehabilitation, and management of structures and infrastructure systems under uncertainty. Major topics covered include life-cycle safety, reliability, risk, resilience and sustainability, life-cycle damaging processes, life-cycle design and assessment, life-cycle inspection and monitoring, life-cycle maintenance and management, life-cycle performance of special structures, life-cycle cost of structures and infrastructure systems, and life-cycle-oriented computational tools, among others.
This Open Access Book provides an up-to-date overview of the field of life-cycle civil engineering and significant contributions to the process of making more rational decisions to mitigate the life-cycle risk and improve the life-cycle reliability, resilience, and sustainability of structures and infrastructure systems exposed to multiple natural and human-made hazards in a changing climate. It will serve as a valuable reference to all concerned with life-cycle of civil engineering systems, including students, researchers, practicioners, consultants, contractors, decision makers, and representatives of managing bodies and public authorities from all branches of civil engineering
Effects of Climate Change on Life-Cycle Performance of Structures and Infrastructure Systems: Safety, Reliability and Risk: Preface
No full textDamage modeling and nonlinear analysis of concrete bridges under corrosion
No full textA general approach to nonlinear analysis of concrete bridges under corrosion is presented. This approach is based on the formulation of a three-dimensional reinforced concrete beam finite element which accounts for both mechanical and geometrical nonlinearity. The formulation considers uniform and localized (pitting) corrosion and damage modeling includes the reduction of cross-sectional area of corroded bars, the reduction of ductility of reinforcing steel, the deterioration of concrete strength, and the spalling of concrete cover. The beam finite element is validated with reference to the results of experimental tests carried out on beams with corroded reinforcement. The three-dimensional structural analysis of a reinforced concrete arch bridge under different damage scenarios shows the effectiveness and application potentialities of the proposed formulation for life-cycle assessment and design of concrete bridges exposed to corrosion
Lifetime structural robustness of concrete bridge piers under corrosion
No full textThe lifetime structural robustness of concrete bridge piers under environmental damage is investigated in deterministic and probabilistic terms. Criteria and methods for the definition of lifetime performance indicators and the quantitative evaluation of structural robustness are presented. The effects of damage on the structural performance are evaluated by using a methodology for life-cycle assessment of concrete structures in aggressive environments. The proposed approach is applied to a reinforced concrete bridge pier with box cross-section. The results highlight the important role of the environmental exposure and demonstrate the effectiveness of the proposed measures in comparing the robustness associated to different exposure scenarios
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
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
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