Structural Test and Analysis of a Hybrid Inflatable Antenna

NASA is developing ultra-lightweight structures technology for communication antennas for space missions. One of the research goals is to evaluate the structural characteristics of inflatable and rigidizable antennas through test and analysis. Being able to test and analyze the structural characteristics of a full scale antenna is important to enable the simulation of various mission scenarios to determine system performance in space. Recent work completed to evaluate a Hybrid Inflatable Antenna concept will be discussed. Tests were completed on a 2-m prototype to optimize its static shape and identify its modal dynamics that are important for analytical model validation. These test results were used to evaluate a preliminary finite element model of the antenna, and this model development and correlation activity is also described in the paper

Decision Agriculture

In this chapter, the latest developments in the field of decision agriculture are discussed. The practice of management zones in digital agriculture is described for efficient and smart faming. Accordingly, the methodology for delineating management zones is presented. Modeling of decision support systems is explained along with discussion of the issues and challenges in this area. Moreover, the precision agriculture technology is also considered. Moreover, the chapter surveys the state of the decision agriculture technologies in the countries such as Bulgaria, Denmark, France, Israel, Malaysia, Pakistan, United Kingdom, Ukraine, and Sweden. Finally, different field factors such as GPS accuracy and crop growth are also analyzed

Rinnegare edmund burke? english votes for english laws e rappresentanza politica

L'articolo analizza la riforma dei Regolamenti parlamentari della House of Commons, che modificano le fasi del procedimento legislativo attraverso l'introduzione della procedura "English Votes for English Votes". L'articolo poi si interroga, criticamente, sulle implicazioni giuridiche della modifica sul moderno concetto di rappresentanza politica, il c.d. trustee model of representation

Senato rappresentativo dei territori e procedimento legislativo: profili di diritto comparato

Il testo prende in esame il disegno di legge costituzionale Renzi-Boschi, con particolare riferimento alla trasformazione del Senato della Repubblica in una camera a rappresentanza territoriale. L'analisi della composizione e delle funzioni del Senato, per come concepite dalla riforma, sarà arricchita dal confronto con l'organizzazione dei sistemi bicamerali di Francia, Spagna e Germania