1,721,130 research outputs found
Le negoziazioni internazionali di materie prime. Implicazioni contrattuali e finanziarie
No full text(a cura di) Le strategie innovative delle imprese. Nuovi approcci al mercato, comprendente gli articoli «Il ruolo del sistema paese come determinante del successo competitivo dell’impresa: alcune riflessioni» e «Convergenza settoriale - information and communication technologies»,
No full text“MANAGING INDUSTRIAL DISTRICT FIRMS: STRATEGIC COMPROMISES BETWEEN SYSTEMIC TIES AND DYNAMIC CAPABILITIES”,
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Approccio sistemico e ruolo del sistema Paese nella definizione della capacità competitiva dell’impresa: alcune riflessioni
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Time dependent behaviour of continuous composite beams: comparison among different prestressing techniques
No full textThe long-term behaviour of continuous steel-concrete composite beams is investigated to evaluate the effectiveness of the principal prestressing systems generally used to prevent cracking of the concrete in the regions of the internal supports. Four prestressing techniques are considered: the first with imposed support settlements, the second with internal cables in cast-in-situ slab, the third with internal cables in precast concrete slab and the fourth with external cables. The time-evolution of the compressive stress on the slab is studied evaluating the magnitude of stress loss due to concrete creep. The study is carried out on a composite beam model with flexible shear connection which permits taking into account the slip at the beam-slab interface and calculating the longitudinal shear force distribution which is particularly important at the cable anchorage sections
Un modello di analisi delle traiettorie evolutive del sistema impresa. Struttura e governance
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