We discuss a family of clusters C corresponding to the region whose boundary is formed by a fractional Brownian path y(i) and by the moving average function yn(i)≡1n∑k=0n−1y(i−k). Our model generates fractal directed patterns showing spatio-temporal complexity, and we demonstrate that...

The ageing of farmers and lack of successors are major concerns for the future of the sector. The paper analyses the age structure of family workers with a twofold objective. The ageing dynamics is analyzed in order to seek out its inertial components as well as any new trends there may be. The...

The Hurst exponent H of long range correlated series can be estimated by means of the detrending moving average (DMA) method. The computational tool, on which the algorithm is based, is the generalized variance σDMA2=1/(N-n)∑i=nN[y(i)-y˜n(i)]2, with y˜n(i)=1/n∑k=0ny(i-k) being the average...

The paper discusses the unsatisfactory results of the European policy for food quality. Economic justifications for public intervention in this field are briefly summarized. Financial aid, introduced by the 2003 Reform to reinforce the range of instruments to promote food quality, is also...

he paper assesses the performance of Made-in-Italy agri-food exports in recent years, making use of the concept of export sophistication and relative indicators. The results show Made-in-Italy agri-food exports enjoying overall good health, their level of sophistication actually being an...

La nota propone alcune riflessioni sul contributo che il settore primario può dare al mantenimento dell’identità culturale di un territorio ed al suo rafforzamento esplicando, così, una tra le diverse funzioni aggiuntive a quella primaria che vengono da più parti attribuite...

The impact ojMac Sharry rejorm on EU agriculture, jully implemented since 1996, has not been evaluated yet. The rejorm process has continued, mainly on the same guidelines, with Agenda 2000 and it is still going on with the so called Mid Term Review. This is why an evaluation ojthe effects ojthe...