Metodologie e tecniche di analisi dei dati per il Click Streaming

Si presentano i risultati di un progetto riguardante l’analisi del comportamento del consumatore, mediante lo studio delle tracce lasciate sui file di log dei server Apache, e la successiva progettazione e realizzazione di un ClickStream Data Warehouse. Il lavoro si è avvalso dei dati di 2 applicazioni e-commerce. Lo studio dei file di log effettuato si è focalizzato su un duplice aspetto: da un lato l’analisi delle caratteristiche dei consumatori e della loro propensione all’acquisto, mediante tecniche di Data Mining, e dall’altro l’individuazione dei percorsi più frequentatati dai navigatori, con particolare riferimento ai Modelli Markoviani

I Prodotti agroalimentari e floricoli tipici tra conservazione e innovazione

Recent EU and National policies for agriculture and rural development are mainly focused to foster the production of high quality products as a result of the increasing demand of food safety, typical foods and traditional processing methods. Another word very often used to describe foods in these days is “typicality” which pools together the concepts of “food connected with a specific place”, “historical memory and tradition” and “culture”. The importance for the EU and the National administrations of the above mentioned kind of food is demonstrated, among other things, by the high number of the PDO, PGI and TSG certificated products in Italy. In this period of global markets and economical crisis farmers are realizing how “typical products” can be an opportunity to maintain their market share and to improve the economy of local areas. At the same time, new tools and strategy are needed to reach these goals. A lack of knowledge has being recognized also on how new technologies and results coming from recent research can help in exploiting traditional product and in maintaining the biodiversity. Taking into account the great variety and richness of typical products, landscapes and biodiversity, this report will describe and analyze the relationships among typicality, innovation and research in horticulture. At the beginning “typicality” and “innovation” will be defined also through some statistical features, which ranks Italy at the first place in terms of number of typical labelled products, then will be highlighted how typical products of high quality and connected with the tradition and culture of specific production areas are in a strict relationship with the value of agro-biodiversity. Several different examples will be used to explain different successful methods and/or strategies used to exploit and foster typical Italian vegetables, fruits and flowers. Finally, as a conclusion, since it is thought that innovation should be compatible with typical products without interfere and modify the link between product and area of production the role of research will be defined and quantified

Studi sui danni da raffreddamento dell'arancio «Valencia late» in relazione allo stadio di maturazione dei frutti e alle temperature di conservazione

The Authors refert on «Valencia late» orange susceptibility to chilling injury in relation to picking period and storage temperature. Four fortnightly pickings have been carried out and two temperatures, 3° and 6°C, have been adopted. The results show a close relation between chilling injury and period of picking, particularly if the fruit are stored at 3°C. The fruits of the first and, in minor extent, those of the forth picking have been more resistant to the disorders than the second and third ones. At 6°C the percentage of affected fruits have been low with exception of the second picking. Therefore it appears that the optimal temperature, for «Valencia late» orange long-term storage, is 6°C which may vary depending upon fruit maturation stage

Test morfoqualitativi e chimici applicabili ai frutti di agrumi frigoconservati

A preliminary bibliographical research provided the methods to be followed for a morpho-qualitative control of refrigerated citrus fruit. The different methods were then checked in order to determine the procedures through which the qualitative aspects and their changes in refrigerated citrus fruit are best shown. The methods which can be suggested to those in charge for this type of control are then described

La Nutrizione minerale del mirto

An open field research and a pot-grown plant trial have been planned in order to evaluate the influence of mineral nutrition, i.e. nitrogen fertilization, on the agronomic and qualitative response of myrtle variety selections. In a randomized field located in the DESA experimental station in Oristano, Sardinia (Italy) during February 2004 three different levels (0g, 50g and 100g) of NH4NO3 at 26% were applied on 15 plants of three myrtle cultivars named BOS1, BOS 2 and CPT 5. At harvest time plant size (height and diameter) and yield were recorded and on 100 leaves the macro and micro elements (N, P, K, Na, Ca, Mg, Cu, Zn, Fe e Mn) content was measured. On 100 ripe fruits, berry and seed weights were determined and the amount of SST, total acids, pH, polyphenols and anthocyans were also recorded. Nitrogen fertilization induced increase in fruit number and yield and reduced fruit size in different extent among the selections. On fruit quality (total acids, SST) the influence of the genetic factor was higher than fertilization. In the pot-grown plant trial the response of three-year old self rooted myrtle plants of the CPT 5 variety selection to an eight nitrogen fertilization levels applications (0g, 4g, 8g, 12g, 16g, 20g, 24g, 28g,) was evaluate measuring the percentage of plant survival, the leaf number and the macro and microelements content. The nitrogen fertilization (until 12g) positively influenced plant growth while higher levels of nitrogen caused toxic effect

Weekly versus three weeks chemotherapy for advanced ovarian cancer. A meta-analysis

Aim: Three weeks paclitaxel and carboplatin has been considered the standard of care for primary treatment of ovarian cancer (OC). Whether weekly therapy will further improve the clinical outcomes or not is still unclear. We conducted a meta-analysis to compare the two regimens. Method: Articles were selected with a systematic approach, using PubMed databases. Trials concerning comparison between carboplatin plus weekly paclitaxel (dose-dense regimen) and carboplatin plus paclitaxel every 3 weeks were considered. Outcomes included overall survival (OS), progression free survival (PFS) and severe acute toxicity. Results: Dose-dense regimen was associated with significant improvement of PFS compared with standard schedule, with HR of 0.73 (95% CI 0.61-0.88, p = 0.001). There was no difference in OS between treatment regimens (HR 0.95, 95% CI 0.77-1.16, p=0.06), as well as in term of severe acute toxicity. Conclusion: Dose-dense regimen is superior to standard schedule in terms of PFS. Further studies are necessary to firmly confirm this evidence in advanced OC treatment

Frigoconservazione degli agrumi: prime esperienze in Sardegna sulla conservazione delle cultivar di arancio «Washington navel», «Tarocco» e «Valencia late»

A two-year research on cold storage of «Washington navel» «Tarocco », «Valencia late». oranges conducted in Sardinia showed considerable differences among cultivars tested. Changes in the main morpho-qualitative fruit characteristics during a two-month storage at 6° C and 85% relative humidity were studied. Among the cultivars compared, «Valencia late» orange was found the most resistant to storage conditions. Fungicide treatment with Imazalil, in wax at 1500 ppm, proved to be the bes t for controlling rot development, while TBZ (3000 ppm) was not very eftective; but the combination of OPP and TBZ in wax provided adeguate control. Weight losses during storage was also evaluated and related to wax treatment

Applicazione di marcatori molecolari per la caratterizzazione di genotipi di <i>Myrtus communis</i> l.

The application of molecular markers technology to evaluate the genetic diversity within the species Myrtus communis L. has been aimed to analyse 38 selected genotypes, collected from different natural populations growing in Sardinia and prospected as improved varieties for myrtle cultivation. The results obtained showed the high efficiency in evidencing polymorphisms of ISSR (Inter Simple Sequence Repeat) molecular marker, thus proving to be useful in the evaluation of genetic relationship among the selections. The application of cpSSR (Chloroplast Simple Sequence Repeat) marker gave less reliable results, since data obtained were not suitable for the genotypes fingerprinting