2 resultados para persistency

em AMS Tesi di Dottorato - Alm@DL - Università di Bologna


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Il presente progetto di ricerca riguarda la terza trilogia di romanzi di Nuruddin Farah, “Past Imperfect” (2004-2011). L’analisi dei tre testi che compongono la trilogia – “Links” (2004), “Knots” (2007) e “Crossbones” (2011) – evidenzia la persistente rilevanza delle narrazioni e delle rappresentazioni della famiglia all’interno di tutta la produzione letteraria dell’autore. Questa prospettiva critica richiede l’impiego di una metodologia che riunisce vari aspetti della critica letteraria di matrice post-strutturalista e, per altri versi, di stampo materialista, assecondando così le due principali tendenze critiche presenti all’interno degli studi postcoloniali. Lo stesso approccio teorico-metodologico può essere applicato anche in altri due ambiti critici chiamati in causa dalla trilogia di Nuruddin Farah: la cosiddetta “world literature” e la cosiddetta “failed-state fiction”. L’analisi delle narrazioni e delle rappresentazioni della famiglia richiede, inoltre, un approccio interdisciplinare molto esteso, stimolando ricerche negli ambiti della semiotica, dell’antropologia, della psicanalisi, dei Gender Studies e dei Trauma Studies.

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The first chapter provides evidence that aggregate Research and Development (R&D) investment drives a persistent component in productivity growth and that this embodies a risk priced in financial markets. In a semi-endogenous growth model, this component is identified by the R&D in excess of equilibrium levels and can be approximated by the Error Correction Term in the cointegration between R&D and Total Factor Productivity. Empirically, the component results being well defined and it satisfies all key theoretical predictions: it exhibits appropriate persistency, it forecasts productivity growth, and it is associated with a cross-sectional risk premium. CAPM is the most foundational model in financial economics, but is known to empirically underestimate expected returns of low-risk assets and overestimate those with high risk. The second chapter studies how risks omission and funding tightness jointly contribute to explaining this anomaly, with the former affecting the definition of assets’ riskiness and the latter affecting how risk is remunerated. Theoretically, the two effects are shown to counteract each other. Empirically, the spread related to binding leverage constraints is found to be significant at 2% yearly. Nonetheless, average returns of portfolios that exploit this anomaly are found to mostly reflect omitted risks, in contrast to their employment in previous literature. The third chapter studies how ‘sustainability’ of assets affect discount rates, which is intrinsically mediated by the risk profile of the assets themselves. This has implications for the assessment of the sustainability-related spread and for hedging changes in the sustainability concern. This mechanism is tested on the ESG-score dimension for US data, with inconclusive evidence regarding the existence of an ESG-related premium in the first place. Also, the risk profile of the long-short ESG portfolio is not likely to impact the sign of its average returns with respect to the sustainability-spread, for the time being.