1,720,969 research outputs found
Strengthening of the masonry bearing building stock in Albania with composite materials Merita Guri; Diana Lluka; Egla Luca
No full textExternally bonded grids are used in this study as a means of increasing the loadcarrying and deformation capacity of the masonry bearing building stock in Albania, subjected the seismic spectrum. For the improvement of the seismic performance of this type of residential stock with load bearing masonry, we will focus on polymer materials such as TRM (Textile-reinforced mortar). Purpose of this study is to asses and to improve the seismic performance of projects type of masonry stock building chosen in Albania, which are projected in accordance with Codes [KTP-78, 1978; KTP-89, 1989, EC-8]. This assessment will be done according to instructions of ATC40 and FEMA 440, knowing nonlinear behaviour of masonry. Reinforced building with polymer materials such as TRM resulted in a better performance than that without reinforcement. Improvement was observed in two main directions, the carrying capacity and displacements form the seismic spectrum. Based on the findings of this work the use of externally bonded grids TRM comprises a promising solution for the structural upgrade of existing masonry structures in our country
"Seismic Design for Architects: Outwitting the Quake" Author: Andrew Charleson. First publication Elsevier, Architectural Press. ISBN: 978-0-7506-8550-4 "Projektimi Antisizmik per Arkitekt - Te tregohesh me i zgjuar se termeti" - PhD Egla Luca - ISBN:978-9928-4459-0-2 Polis_Press
No full textThis book talks about seismic design in the eyes of architects, how can architects design better and safer buildings in seismic areas. This is a perfect book not only for architects but for structural engineers also to better understand how the earthquake impact our everyday life
Comparison of seismic structural behavior of high-rise buildings with and without base isolation
No full textComparison of the seismic structural behavior of high-rise buildings with and without energy dampers. PhD. Eng. Egla Luca – UBT – Higher Education Institution, Lagjja Kalabria, 10000 p.n., Prishtine, Kosovo [email protected] ; [email protected] Albania is one of the countries most prone to seismic oscillations in the Balkans (Aliaj, Sulstarova, Peci, Muco, 2004). Recent devastating earthquakes have shown that reinforced concrete buildings have suffered maximum damage and are responsible for the loss of life. Due to reasons such as design codes, non-appropriate seismic detailing and lack of experience in high-rise building construction, these types of structures are vulnerable to earthquakes. It is therefore important to evaluate the seismic performance of high-rise buildings in Albania. In Albania, as a country with high seismic hazard, it is very important the design and seismic evaluation of buildings. From the economic perspective, there are two options: repair or demolition. The opportunity to choose is given by the assessment of their actual condition. (Luca Guri, Lluka, , 2015) High-rise buildings during their lifetime are subject to dynamic loads continuously, caused by the wind, seismic oscillations, vibrations caused by machineries, etc. In some cases, under the action of strong earthquakes, structures undergo large displacements and may suffer significant structural damage, and even be destroyed. With the growth of population every year, more and more increases the role of high structures, and therefore the design of these structures should have a greater importance. In other words, the design of high-rise structures in seismic areas as Albania is a major challenge. The most dangerous consequence of the earthquake is the collapse of the building caused by large displacements of the structure. Therefore, the structure should have sufficient ductility which is imperative to limit the displacements, in this way and Force - Displacement effect will be smaller. This can be accomplished by placing to the structure elements that stiffener it, such as a shear walls or steel braces, or dumpers. The focus of this paper is to analyze the use of base isolators as a method to limit the displacement of the building and therefore to prevent the collapse of high-rise buildings in seismic regions. Base isolation technique was developed as an attempt to reduce the effects on buildings and their structural elements during seismic events, and is becoming one of the most effective methods for a wide range of problems of structures under the seismic action. In recent decades, based isolation has become one of the most accepted techniques for seismic protection of buildings. On the other hand, seismic isolation is widely regarded as an efficient method for problematic structures, which are characterized by specific seismic requirements. Seismic Isolation is also used in the rehabilitation of existing buildings and strengthening of weak structures. This paper focuses on the impact that base isolation and above ground isolation, systems have on the seismic response of the buildings
"Sustainability,Restorative to Regenerative An exploration in progressing a paradigm shift in built environment thinking, from sustainability to restorative sustainability and on to regenerative sustainability" COST Action CA16114 RESTORE: REthinking Sustainability TOwards a Regenerative Economy, Working Group One Report: Restorative Sustainability EDITORS Martin Brown, Edeltraud Haselsteiner, Diana Apró, Diana Kopeva, Egla Luca, Katri-Liisa Pulkkinen and Blerta Vula Rizvanolli
No full textIt is now some 30 years since Brundtland defined sustainable development, broadly defined as not doing anything today to compromise tomorrow’s generation, and in doing so defined sustainability for business and enterprises globally. Many in the built environment have taken this passive ‘do nothing’ approach, as license to do the least possible. Consequently, we have and we continue to compromise future generations. The built environment is a huge influencer on ‘sustainability’, we spend over 90% of our time working, living and playing within our buildings. Despite sustainability and corporate social responsibility initiatives it is irresponsible that we have generally failed to grasp our influence and to address the potential to move the needle on wider global sustainability and climate issues. Buildings, and the manner in which we design, construct and maintain them have been a significant contributor to climate breakdown we are witnessing. Restorative and regenerative approaches can flip this enabling buildings to become part of climate regeneration solutions. Maybe sustainability is not a journey, but a state of equilibrium, based on giving as much as we take. On the negative side where we take more, we are unsustainable and no matter how much we reduce our impacts we will always remain unsustainable. On the positive side 'to do more good' we open doors to restore environments an
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
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