Search results for "CONSTRUCTION"
showing 10 items of 2670 documents
Earth Construction: The Mechanical Properties of Adobe with the Addition of Laponite
2015
The contribution describes testing of compression strength, flexural strength and abrasion resistance of adobe made up of soil, water and sand (AS), soil, water, sand and straw (ASP), soil, water, sand and laponite nanoparticles (ASN). Embodied energy in materials presents an increasingly high percentage of the energy spent in the whole life cycle of a building. The same applies for carbon dioxide (CO2). Therefore, the development of new sustainable construction materi- als with lower embodied energy and lower CO2 emissions is needed. The use in construction of the brick made from soil, water and sand or straw, called adobe, boasts a millenary tradition and in recent years there has been re…
Seismic behavior of exterior RC beam-column joints without code-specified ties in the joint core
2021
Abstract Beam-column joint design for reinforced concrete (RC) buildings is a critical issue for modern earthquake engineering, because for these structural elements, the current codes provide several geometrical constraints and reinforcement provisions, which may be very complex to implement during the construction phase. To investigate how a construction error might influence the joint behavior, two identical full-scale exterior beam-column joints specimens are built, according to Italian Building Code specifications for the high ductility class, but without the required horizontal ties inside the joint panel. This construction error could be plausible because, according to the design dra…
Le città della Valle del Belice in Sicilia a cinquant’anni dal terremoto
2018
In seguito al drammatico terremoto che nel 1968 devastò 14 comuni della Valle del Belice, fu avviata una complessa macchina della ricostruzione, in cui le scelte non furono dettate da linee programmatiche omogenee ed univoche, determinando in alcuni casi la ricostruzione in situ dei centri distrutti, in altri il trasferimento in aree anche distanti dall’insediamento originario. La ricostruzione fu occasione per la comunità scientifica e professionale nazionale per sperimentare soluzioni progettuali che però, il più delle volte, non hanno tenuto conto della tradizione insediativa, tradendone le radici identitarie. Following the dramatic earthquake that devastated 14 municipalities in the Bel…
Rebuilding a Cultural Legacy in a New Town. Reshape Physical and Cultural Continuity between Old and New Town of Gibellina
2019
The article analyses the emblematic case of the post-earthquake reconstruction of the city of Gibellina. In the present case, the reconstruction process has led to serious errors caused by numerous wrong choices; most of these derive from the fact that the cultural heritage expressed by the places and the population was not taken into consideration. To restore the threads of memory broken by the earthquake, a research was carried out – by the writer – aimed at the reconstruction of the image of the old Gibellina; the old city, definitively erased from the ground, has been recomposed through the interpretation of the cadastral and statistical data and literary, iconographic, cartographic and…
'Niche Selection' and the evolution of a complex behavior in a changing environment--a simulation.
2000
One of the key problems in theoretical biology is the identification of the mechanisms underlying the evolution of complexity. This paper suggests that some difficulties in current models could be avoided by taking account of “niche selection” as proposed by Waddington [21] and subsequent authors [2]. Computer simulations, in which an evolving population of artificial organisms “selects” the niche(s) that maximize their fitness, are compared with a Control Model in which “Niche Selection” is absent. In the simulations the Niche Selection Model consistently produced a greater number of “fit” organisms than the Control Model; although the Niche Selection Model tended, in general, to produce o…
Reconnecting with poverty: new challenges of disaster management
2011
PurposeIt is clear that poverty can be a key factor to take into consideration at time of potentiating or mitigating the unexpected aftermaths of disasters. In some extent, the degree of vulnerability created by poverty leads scholars to preclude material conditions of life plays a pivotal role in disaster rebuilt. Nonetheless, the present paper aims to explore precisely the connection between the false conceptualization of poverty as pathways towards the conditions of disasters with the disaster in such.Design/methodology/approachThis thesis is that the poverty is a humanitarian disaster often intellectualized as cause of disaster in order for real liable actors not assume their faults. Th…
Local social services in disaster management: Is there a Nordic model?
2017
Abstract The Nordic states have extensive welfare systems in which the local social services are an important component. Despite a growing research on disaster resilience, we lack research examining in systematic way whether and how local social services in the Nordic countries contribute to resilience. Aiming to fill this gap, this article asks whether we can identify a common Nordic model of the role of local social services in disasters, or whether the countries have taken different paths. We use policy documents and legislation to examine the extent to which roles for local social services are embedded in the disaster management systems of the five Nordic countries. We analyze the insti…
Measuring Globalization of International Trade: Theory and Evidence
2009
Measuring globalization requires a Standard of Perfect International Integration as a benchmark that a single world space would reach under conditions of geographic neutrality in international trade. We define this standard and present indicators for openness, connectedness and integration, for each specific economy, and for the world economy. We apply our indicators to data on trade flows for 59 countries for the 1967-2004 period. Results show that trade integration is higher than what traditional openness indicators suggest. Several economies find high levels of integration, but the low degree of openness in some large economies jeopardizes the progress of globalization. © 2008 Elsevier L…
Life cycle assessment of low temperature asphalt mixtures for road pavement surfaces: A comparative analysis
2018
The increasing fuel consumption demand, the accelerated pressure imposed by the depletion of 5 scarce raw materials and the urgent environmental protection requirements are forcing the change of 6 pavement industry and academia community’s research endeavors towards the development of low 7 emissions road paving technologies able to significantly reduce mixing and compaction temperature as 8 well as the consumption of virgin raw materials. One set of relatively recent technologies in the field of 9 pavement materials that aims at addressing those concerns are the warm mix asphalt (WMA). In fact, 10 they have the potential to allow the reduction of energy consumption and airborne emissions d…
Leadership Manipulation and Ethics in Storytelling
2012
This article focuses on exerting influence in leadership, namely manipulation in storytelling. Manipulation is usually considered an unethical approach to leadership. We will argue that manipulation is a more complex phenomenon than just an unethical way of acting in leadership. We will demonstrate through an empirical qualitative study that there are various types of manipulation through storytelling. This article makes a contribution to the literature on manipulation through leadership storytelling, offering a more systematic empirical analysis and a more nuanced view of the topic than previously existed by outlining how managers engage in manipulative storytelling and what kind of ethics…