Search results for "Wing"
showing 10 items of 1549 documents
The colour to knows the project ideas. The drawings of Giuseppe Damiani Almeyda
2012
Giuseppe Damiani Almeyda is insert into a historical context in which the issue of colour is living a phase of discovery and awareness. Author of numerous architectural works of international attention, arrives in Palermo in 1859, first like engineering of Civil Engineering to become a professor at the Faculty of Engineering. In the XIX century a lot of researchers of psychology, physics, optics, art and architecture are involved in meticulous research that could explain the reasons of colour, its alteration, the complementary compositions, the diagrams, the optical cones, its applications in the Greek and Roman culture. Thus, high-sounding names such as Thomas Young, James Clerk Maxwell, W…
Postfazione
2021
In 1933, Emil Kaufmann revealed the figure of Jean-Jacques Lequeu to a wider audience for the first time by publishing, in his Von Ledoux bis Le Corbusier, a number of drawings by the then almost unknown architect from Normandy to support the thesis, still debated today, that sees Claude-Nicolas Ledoux's "revolutionary" architecture as the origin of a natural line of sight which, starting from the purity of neoclassical forms, leads directly to the works of the masters of the modern movement. The afterword analyses Felice Romano's study of the Novelle Méthode.
Three Projects for Council Houses by Lina Bo Bardi: from Virtual Reconstruction to Graphical Analysis
2018
The paper deals with the studies conducted in 1951 in Brazil by Lina Bo Bardi on the issue of council houses. The three examples were never realised but do help to describe the intention of the architect to promote a “rational” way of living, from a small house to an urban complex. The first project concerns a small house with a close relationship between architecture and nature. The second project concerns three housing units that embody the idea of the housing cell as a constituent piece of a community. The housing typologies to which the architect has referred are: the indigenous maloca, a community house used by the Amazon natives; the Italian peasant house with its living room; and the…
Disegni e incisioni di Tarquinio Ligustri da Viterbo conservati presso collezioni private e pubbliche italiane, francesi e tedesche
2021
In international, Italian, French and German public collections, but also among private collections, there are architectural drawings by the quadrature painter Tarquinio Ligustri da Viterbo, made after 1596 and depicting portals of his invention. This corpus is mostly unpublished and has remained anonymous for centuries. It consists of a consistent body of preparatory drawings kept at the Kunstbibliothek in Berlin, and a small number of engravings made from them, distributed in loose form but also bound in a rare miscellaneous volume published in the second half of the seventeenth century by Giovanni Giacomo De Rossi‘s famous Roman printing house Alla Pace. The detailed examination of the d…
Image Segmentation based on Genetic Algorithms Combination
2005
The paper describes a new image segmentation algorithm called Combined Genetic segmentation which is based on a genetic algorithm. Here, the segmentation is considered as a clustering of pixels and a similarity function based on spatial and intensity pixel features is used. The proposed methodology starts from the assumption that an image segmentation problem can be treated as a Global Optimization Problem. The results of the image segmentations algorithm has been compared with recent existing techniques. Several experiments, performed on real images, show good performances of our approach compared to other existing methods.
AN EKF BASED PROCEDURE FOR AUTOMATIC PATH FOLLOWING IN TURBULENT AIR
2017
Aim of the present paper is to propose a procedure to afford an accurate automatic path following in turbulent air. The technique is based on the simultaneous employment of two different EKF. The first estimates disturbances, the second one estimates deflection that are necessary to reject the estimated disturbances. The first EKF uses measurements gathered in turbulent air. The second EKF obtains command laws able to follow the desired flight path rejecting disturbances. To purchase the objective, aerodynamic coefficients have been modified by adding entirely new derivatives or synthetic increments to basic ones. The modified aircraft parameters are determined by augmenting the aircraft’s …
CFD Study of an Innovative Catamaran with Asymmetrical Hulls
2013
The purpose of this paper is the study of the shape of catamaran with asymmetrical hulls by both experimental and numerical viewpoint. The experimental study is based on the towing tank tests on a catamaran hulls shape obtained from previous works, showing that the wave resistance is very low produces a lower energy loss and a greater effectiveness. The hulls shape is optimized by the CFD application by force of commercial software, which shows that the reduction of wasted energy is very sensitive to make some changes; in particular three different width of the catamaran are tested and their performances are compared.
STUDIO DI UN AMMORTIZZATORE ELETTROMAGNETICO A RECUPERO DI ENERGIA
2013
Questo lavoro ha come obiettivo principale lo studio teorico e con supporto di software F.E.M. di un dispositivo che consenta recupero energetico da una sospensione automobilistica. In sostituzione allo smorzatore viscoso, che dissipa l’energia cinetica del veicolo a seguito dell’attraversamento di strade sconnesse o ostacoli più marcati, si è usato uno smorzatore elettromagnetico che svolga le funzioni dello smorzatore viscoso consentendo un recupero di energia elettrica. Lo smorzatore elettromagnetico è di tipo a magneti permanenti e il suo funzionamento si basa sul fenomeno dell’induzione elettromagnetica. Il modello matematico descrive il funzionamento dello smorzatore, restituendo i va…
A Chemical Approach to the Estimate of the Optical Band Gap and Bowing Parameter in Mixed d,d-Metal Oxides
2012
Dynamic Control of Static Converters for the Transition from Grid-on to Grid-off Operation of AC/DC Microgrids
2022
In this paper, specific control logics defined for generators, controllable loads and electric energy storage systems are illustrated in order to improve the reliability of AC/DC hybrid microgrids in their grid-off operation following failure events such as short-circuits, line breaks, sudden disconnections of generating units or loads, etc. After defining specific control schemes, these were modelled in a digital environment and finally tested with dynamic simulations. Finally, the paper highlights the role of virtual synchronous machine control for the self-healing capacity of islanded hybrid microgrids.