196,008 research outputs found
Verso un’innovativa pianificazione di attrezzature e servizi
No full textXXIX CONGRESSO INU
Cagliari, 28/29 aprile 2016 - sezione Innovazione - Verso un’innovativa pianificazione di attrezzature e serviz
Studi urbanistici per il Comune di San Gregorio Magno
No full textXXIX CONGRESSO INU
Cagliari, 28/29 aprile 2016 - sezione Innovazione - Studi urbanistici per il Comune di San Gregorio Magn
A GIS-BIM Approach for the Evaluation of Urban Transformations. A Methodological Proposal
No full textThe implementation and monitoring of the urban transformations provided by the planning tools require a control by the responsible territorial authorities on the compliance of the proposed transformations with the technical and binding rules of the current plans. Considering the complexity of the urban and territorial scale, professionals need a tool capable of satisfying the planning, design and management needs of urban space. The large amount of data and the possibilities of managing the multiple information contained in a BIM model can, indeed, be integrated usefully and declined at higher scales than the single building one, since they can be extended from the sphere of pure architectural design to planning sector. In such a wide context, the GIS-BIM approach can represent a real shift of paradigm aimed at managing the complexity of urban processes more effectively
A GIS-BIM Approach for the Evaluation of Retrofit Actions in Urban Planning. A Methodological Proposal
No full textIn the last years, the increase in urbanization has caused the deterioration of urban environments. Consequently, a series of evaluation frameworks has been developed to monitor the sustainability of urban transformations. Considering the complexity of the urban and territorial scale, professionals need a tool capable of satisfying the planning, design and management needs of urban space. The large amount of data and the possibilities of managing the multiple information contained in a BIM model can, indeed, be integrated usefully and declined at higher scales than the single building one, since they can be extended from the sphere of pure architectural design to the spatial field. In such a wide context, the GIS-BIM approach can represent a real shift of paradigm aimed at managing the complexity of urban processes more effectively. In this paper a methodology focused on the integration of GIS and BIM to design sustainable spatial scenarios of urban transformations will be presented and applied to a case study in south of Italy
Design Methods for Dual Polarized Metasurface Antennas: Three Simple Approaches
No full textMetasurface (MTS) antennas are based on the transformation of a cylindrical-wavefront surface wave (SW) into a general wavefront leaky wave (LW). The MTS aperture is constituted by a grounded dielectric slab printed with an electrically dense distribution of subwavelength patches realizing space-variable, homogenized tensor impedance boundary conditions (IBCs). One of the challenges in this type of antenna is related to obtaining dual polarization operations by using the same impedance modulation. In this article, we explore and compare three simple approaches to obtain two beams with orthogonal polarizations by feeding two ports. A first known method is based on exciting both a transverse electric (TE) and a transverse magnetic (TM) SW mode on the same modulated impedance. A second method exploits the concept of impedance modulation sharing, according to which two distinct modulations, designed to radiate different polarizations when properly illuminated by distinct offset feeding points, are superimposed on the same aperture. A third method consists in duplexing an outward (radially diverging) and an inward (converging to the center) SW. Simple analytical formulas are presented for the synthesis of the impedance that allows for the control of the inward/outward waves to ensure balanced radiation performances in terms of aperture efficiency for the two polarizations. A comparison in terms of performances between the latter two approaches is presented
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