1,354,243 research outputs found
Il settore orafo in Italia.
No full textIl capitolo descrive la rete del valore nel settore, i tipi di concorrenti e i canali distributivi
Il processo produttivo e lo sviluppo nuovi prodotti.
No full textNel capitolo si analizza lo sviluppo dei nuovi prodotti nel settore e i ruoli coinvolti nel processo
La segmentazione del settore
No full textNel capitolo si considerano i criteri di segmentazione del settore partendo da quelli tradizionali per descrivere i più nuovi
Latently Mediating: A Bayesian Take on Causal Mediation Analysis with Structured Survey Data
No full textIn this paper, we propose a Bayesian causal mediation approach to the analysis of experimental data when both the outcome and the mediator are measured through structured questionnaires based on Likert-scaled inquiries. Our estimation strategy builds upon the error-in-variables literature and, specifically, it leverages Item Response Theory to explicitly model the observed surrogate mediator and outcome measures. We employ their elicited latent counterparts in a simple g-computation algorithm, where we exploit the fundamental identifying assumptions of causal mediation analysis to impute all the relevant counterfactuals and estimate the causal parameters of interest. We finally devise a sensitivity analysis procedure to test the robustness of the proposed methods to the restrictive requirement of mediator's conditional ignorability. We demonstrate the functioning of our proposed methodology through an empirical application using survey data from an online experiment on food purchasing intentions and the effect of different labeling regimes
The Determinants of the EU Import Demand for Soybean and Maize: What Role for GMOs?
No full textIn this work, we analyse EU soybean and maize imports using a demand system borrowed from the differential approach to firm theory. Alongside providing own-price and cross-price (i. e. cross-country) elasticities for these two products, we test whether source-specific characteristics exert any influence on complementarity and substitution patterns between international exporters. Specifically, we look at country differences stemming from supply chain efficiency and the asynchronous approval of Genetically Modified (GM) varieties. We do so by introducing two measurements for such features into a linear demand model specified by Laitinen and Theil (1978). Estimation results suggest that the EU import structure is not affected by differences in supply chain efficiency between overseas suppliers while, depending on the product, asynchronous approval does seem to have an influence. We find that imports of maize are more sensitive than those of soybeans to differences in approval statuses between international exporters and the EU. Since soybean availability is a limiting factor for the EU feed industry, avoiding stock shortages may be a priority for European importers, hence the weaker effect of asynchronous approval. On the other hand, the substantial EU self-sufficiency for maize places more emphasis on product characteristics and prices
How Differently Do Farms Respond to Agri-environmental Policies? A Probabilistic Machine-Learning Approach
No full textThis study evaluates the extent to which farmers respond heterogeneously to the agri-environmental policies implemented in the European Common Agricultural Policy (CAP). Our identification and estimation strategy combines a theory-driven research design formalizing all possible sources of heterogeneity with a Bayesian additive regression trees algorithm. Results from a 2015–2018 panel of Italian farms show that the responsiveness to these policies may differ substantially across farms and farm groups. This suggests room for improvement in implementing these policies. We also argue that the specific features of the CAP call for a careful implementation of these empirical techniques
Product Differentiation and Brand Competition in the Italian Breakfast Cereal Market: a Distance Metric Approach
No full textThis article employs a nation-wide sample of supermarket scanner data to study product and brand competition in the Italian breakfast cereal market. A modified Almost Ideal Demand System (AIDS), that includes Distance Metrics (DMs) as proposed by Pinkse, Slade and Brett (2002), is estimated to study demand responses, substitution patterns, own-price and cross-price elasticities. Estimation results provide evidence of some degree of brand loyalty, while consumers do not seem loyal to the product type. Elasticity estimates point out the presence of patterns of substitution within products sharing the same brand and similar nutritional characteristics
How Differently Do Farms Respond to Agri-environmental Policies? A Probabilistic Machine-Learning Approach
No full textThis study evaluates to what extent farmers respond heterogeneously to the agri-environmental policies implemented within the European Common Agricultural Policy (CAP). Our identification and estimation strategy combines a theory-driven research design formalizing all possible sources of heterogeneity with a Bayesian additive regression trees algorithm. Results from a 2015-2018 panel of Italian farms show that the responsiveness to these policies may differ substantially across farms and farm groups. This suggests room for improvement in the implementation of these policies. We also argue that the specific features of the CAP call for a careful implementation of these empirical techniques
I "primi acquirenti"
No full textLa quota percentuale della produzione italiana di latte vaccino raccolta nel 2011/12 dai quattro maggiori “primi acquirenti” – vale a dire il CR4 – risulta pari al 13,4%; tale quota sale al 20,3% se si considerano le otto maggiori imprese: sono le stesse, collocate per giunta nel medesimo ordine, della campagna precedente. Entrambi gli indicatori, CR4 e CR8, nel 2011/12 evidenziano su base campagna una lieve flessione, ma a medio termine, vale a dire nel corso delle ultime sei campagne, risultano in forte crescita, anche per il fatto che le tre imprese di Lactalis (Galbani, Caravaggio Latte e Italatte) sono confluite in Italatte Spa, che dal 2007/08 è diventata il maggiore “primo acquirente” del Paese con una quota nel 2011/12 del 4,4%, in flessione di 0,7 punti percentuali nel corso dell’ultima campagna. Ai primi quattro posti, oltre a Italatte, si collocano nell’ordine, Granlatte, Soresina e Santangiolina, vale a dire una impresa privata multinazionale e tre cooperative, due attive in ambito locale e una a livello nazionale. Seguono, oltre a Parmalat, che fa parte del gruppo Italatte, altre tre cooperative: Consorzio Produttori Latte Milano, Assegnatari Associati Arborea e Consorzio Agri Piacenza Latte
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