Relationships between remotely sensed fisheries distribution information and selected oceanographic parameters in the Mississippi Sound

A feasibility study to demonstrate the potential of satellites for providing fisheries significant information was conducted in the Mississippi Sound and adjacent offshore waters. Attempts were made to relate satellite acquired imagery to selected oceanographic parameters and then to relate these parameters to aircraft remotely sensed distribution patterns of resident surface schooling fishes. Initial results suggest that this approach is valid and that the satellite acquired imagery may have important fisheries resource assessment implications

Guardando al «Siculorum» del 1948

Riflettere sulla prima annata del «Siculorum», datata 1948, vuol dire anzitutto per noi riconnetterci simbolicamente al principio, alle pagine da cui tutto ha avuto inizio, ma significa anche specchiarci in una temperie sociale, culturale e politica molto diversa. Si tratta, in altre parole, di un'occasione per comprendere noi stessi a partire da un passato recente ma lontanissimo, vista la velocità estrema dei cambiamenti succedutisi lungo questi settant'anni. Cominciamo insomma la nostra sezione di reprint non da un dibattito intorno ad un tema specifico, sollecitato dalla ristampa digitale di un grande libro, bensì da un tentativo di conversazione e di pensiero sul nostro ieri e sul nostro oggi, in vista di un domani incerto, difficilmente prevedibile ma (altrettanto) ineludibile. In questa riflessione, i primi due numeri del «Siculorum Gymnasium» ci fanno da falsariga e da apripista, in quanto pongono implicitamente alcune questioni decisive, anche in ordine al senso della cultura umanistica, al suo ruolo e ai suoi spazi nella società, ai suoi orizzonti di ricerca e ai suoi atteggiamenti etici, ai suoi saperi e alle sue forme. Abbiamo inviato i due numeri della prima annata in digitale a quattro studiosi, rappresentanti di diverse aree della ricerca umanistica. Abbiamo richiesto loro di rispondere ad alcune questioni poste dalla redazione

A linear domain decomposition method for two-phase flow in porous media

This article is a follow up of our submitted paper [11] in which a decomposition of the Richards equation along two soil layers was discussed. A decomposed problem was formulated and a decoupling and linearisation technique was presented to solve the problem in each time step in a fixed point type iteration. This article extends these ideas to the case of two-phase in porous media and the convergence of the proposed domain decomposition method is rigorously shown.Comment: 8 page

A Comparison of Different Methods for Rainfall Imputation: A Galician Case Study

[Abstract] Abstract With the ultimate goal of developing models that involve the use of environmental variables, a GIS-based application is being developed that is circumscribed to the region of Galicia (Spain). Ten-minute data of six meteorological variables were collected from 150 stations of the MeteoGalicia network over a period of 18 years, but the time series data are not complete. In order to estimate missing rainfall data, four imputation methods were evaluated in this study: missForest, MICE, Amelia II, and inverse distance weighting (IDW). Crossvalidation results show that the precipitation is out of phase in the different stations due to their geographical locations, and the imputation can be improved with a displacement of the time series; on the other hand, the missForest method provided better results in the imputation of this meteorological variable than the MICE, Amelia, or IDW

Ductility and linear energy density of Ti6Al4V parts produced with additive powder bed fusion technology

Hybrid metal forming processes involve the integration of commonly used sheet metal forming processes, as bending, deep drawing and incremental forming, with additive manufacturing processes as Powder Bed Fusion. In recent ybears, these integrations have been more developed for manufacturing sectors characterized by components with complex geometries in low numbers, as the aerospace sector. Hybrid additive manufacturing overcomes the typical limitations of additive manufacturing related to low productivity, metallurgical defects and low dimensional accuracy. In this perspective, a key aspect of hybrid processes is the production of parts characterized by high strength and ductility. In the present work, a study was carried out on the influence of process parameters, such as laser power and scanning speed, on material ductility for Ti6Al4V alloy samples produced by Selective Laser Melting. In particular, the material strength and ductility were related to the process linear energy density (LED)

Validation of the Italian version of the Burn Specific Health Scale-Brief

Introduction A growing awareness of psychological and functional impairment due to burns have led to the development of specific instruments to evaluate Quality of Life in this population, such as the Burn Specific Health Scale - Brief (BSHS-B), whose psychometric properties have been consistently verified. The aim of this study was to translate the BSHS-B into Italian and to investigate its reliability and validity. Methods Translation procedures were carried out according to accepted standards. Internal reliability was assessed using Cronbach's alpha coefficient. Concurrent validity was evaluated through correlations between the BSHS-B and the Short-Form 36 Health Survey (SF-36), the Self-report Clinical Inventory (SCL-90), and the Body Uneasiness Test (BUT). Results The overall Cronbach's alpha value for the scale was 0.887. Significant correlations were found between the Italian BSHS-B domains, the SF-36 subscales (Spearman's rho: 0.184-0.414), and several SCL-90 subscales (Spearman's rho: -0.173 to -0.477). Furthermore, the affect and relationship domain and the skin domain of the BSHS-B negatively correlated with the compulsive self-monitoring and depersonalization subscales of the BUT. Conclusion The Italian translation of BSHS-B has shown satisfactory internal consistency, criterion validity, and convergent validity, supporting its application in routine clinical practice as well as in international studies. © 2013 Elsevier Ltd and ISBI

A Wind-powered Rover for a Low-Cost Venus Mission

Venus, with a surface temperature of 450 C and an atmospheric pressure 90 times higher than that of the Earth, is a difficult target for exploration. However, high-temperature electronics and power systems now being developed make it possible that future missions may be able to operate in the Venus environment. Powering such a rover within the scope of a Discovery class mission will be difficult, but harnessing Venus' surface winds provides a possible way to keep a powered rover small and light. This project scopes out the feasibility of a wind-powered rover for Venus surface missions. Two rover concepts, a land-sailing rover and a wind-turbine-powered rover, were considered. The turbine-powered rover design is selected as being a low-risk and low-cost strategy. Turbine detailed analysis and design shows that the turbine can meet mission requirements across the desired range of wind speeds by utilizing three constant voltage generators at fixed gear ratios

The Production of Biodiesel From Jatropha Curca and Its Social Impact

The social impact of planting and harvesting the jatropha curca for the production of biodiesel in the province of Manabí is shown, where there are several municipalities involved in this process, mainly the populations that live in rural areas where the conditions are created for their improvement of quality and good living from the income they receive for performing these tasks. A social relationship model was designed that links the social development of rural areas in the province of Manabí with the sowing, harvesting and industrialization of jatropha curca in social development, demonstrating the benefit of using indigenous natural resources for the in the improvement of the quality of life of the populations directed to the economic, energetic, social and environmental sustainable development