This paper aims to present a comprehensive investigation to obtain the structural calculations needed to design a rigid panel of aluminum alloy for the wing box beam of an ATR 72–500 aircraft. For this design process, several types of materials, including composites like CFRP, are considered so it is possible to compare the actual existing part made of aluminum to them, thus checking the advantages these new materials offer. The research presents an introduction to structural design and provides a study of the relevant literature. The aircraft's principal characteristics and performance abilities were collected so that structural loads can be computed. Research used several methods, a design using conventional methods, applying the theory of elasticity is performed using the Theory of Farrar, allowing us to obtain an analytical solution to the problem, followed by checking the obtained results using Ansys FEM software combined with the parts being designed with CATIA. Furthermore, this same panel is calculated using composite materials instead of conventional aluminum, allowing us to compare both solutions. This research shed light on the intricate process of aircraft structural design, materials selection, and calculation methodologies, highlighting the ongoing pursuit of new and advanced materials. This paper makes clear that using composite materials presents several advantages over traditional ones, allowing for lighter, safer, more fuel-efficient, and more sustainable aircraft. The use of composite materials in the construction of airplane structures is driven by many factors. The results show that the chosen composite materials reduce weight, are durable, have low maintenance requirements, reduce noise, enhance fuel economy, and are resistant to corrosion.
How to conceptualize online sociability in the 21st century? To answer this question, Communities at a Crossroads looks back at the mid-2000s. With the burst of the creative-entrepreneur alliance, the territorialisation of the internet and the commercialization of interpersonal ties, that period constituted a turning point for digital communitarian cultures. Many of the techno-libertarian culture’s utopias underpinning the ideas for online sociability faced systematic counter evidence. This change in paradigm has still consequences today.Avoiding both empty invocations of community and swift conclusions of doom, Annalisa Pelizza investigates the theories of actions that have underpinned the development of techno-social digital assemblages after the ‘golden age’ of online communities. Communities at a Crossroads draws upon the analysis of Ars Electronica’s Digital Communities archive, which is the largest of its kind worldwide, and in doing so presents a multi-faceted picture of internet sociability between the two centuries.Privileging an anti-essentialist, performative approach over sociological understandings of online communities, Communities at a Crossroads proposes a radical epistemological turn. It argues that in order to conceptualize contemporary online sociability, we need first to abandon the techno-libertarian communalist rhetoric. Then, it is necessary to move beyond the foundational distinction between Gemeinschaft and Gesellschaft, and adopt a material semiotic approach. In the end, we might have to relinquish the effort to define online or digital communities and engage in more meaningful mapping exercises.
MULTIFILE
For over 30 years, the concept of home has been a popular, yet contested subject of research for scholars from different disciplines, e.g. architecture, philosophy, sociology, psychology and cultural studies. In line with this multifaceted, interesting subject, quite some studies have been devoted to the subject of homemaking.However, when reviewing the literature on home and homemaking, a great deal of scholars seems to have overlooked to date the home situation, and thus the homemaking activities and practices of single person households, or so called ‘solo livers’. This is remarkable because the number of single person households is increasing worldwide, as different recent studies show e.g. (Palmer G. , 2006), (Klinenberg, 2012), (Jamieson & Simpson, 2013). The aim of this working paper – which is part of a PhD proposal in progression – is to address the homemaking process from the perspective of solo living people in the geographical setting of the Provence of Groningen, in the northern part of the Netherlands. An underlying assumption is that by focusing on the homemaking of solo living people, i.e. on the individual level, this typical human phenomenon can be studied in its ‘purest form’.In the paper on homemaking in low-cost areas, Aziz & Ahmad (2012) connect the concepts of appropriation, attachment and identity as homemaking mechanisms, through which residents strive to achieve satisfaction and turn the surrounding area into their home. Aziz & Ahmad seek to identify specific behavioural components, called ‘attributes’, that belong to these three different concepts, in which they make a distinction between physical and social attributes. This focus of this paper is on the concept of appropriation as homemaking mechanism and how this concept can be refined to serve as conceptual framework.
