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Renewable Sources of Plant Biostimulation: Microalgae as a Sustainable Means to Improve Crop Performance
No full textSeeking and Approaching Users in Domestic Environments: Testing a Reactive Approach on Two Commercial Robots
No full textWell-Being and Relational Goods: A Model-Based Approach to Detect Significant Relationships
No full textA statistical framework for modelling subjective perceptions expressed through ratings is presented. The paper deals with the relationships between personal covariates and self-declared happiness, taking into account several social activities, such as spending time with family and friends, participating in groups and associations, and so on. Our setting concerns a class of statistical models able to measure the effects on life satisfaction of the relational goods which have been proved significant in a large sample of respondents. By means of these models, the proposal enhances the different contributions of subjects’ covariates on their response patterns. The selected approach is based on a mixture model to interpret the assessed perception of two unobserved components, denoted as feeling and uncertainty, respectively, as a blend of real beliefs and indecision. Empirical evidence to support the usefulness of this methodological perspective is provided by a recent observational survey concerning happiness and relational goods
P. Perlingieri e C. Perlingieri, Il documento informatico, firme elettroniche e atto pubblico informatico
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Consulenza tecnico-scientifica finalizzata ad attività di studio, elaborazione dati e definizione dei criteri per la revisione del PUC di Carinola
No full textSovraurbanizzazione e Sovrappopolazione: un dilemma dell’umanità
No full textLa revisione di tale importante paradigma della politica maoista che per allineare la Cina agli altri paesi industrializzati si rendeva necessario contenere la popolazione che già a quel tempo era di oltre 600 milioni di abitanti, è stata motivata esclusivamente dal non generare flessioni del PIL del Paese per il calo numerico di consumatori. Il passaggio evidente nella scala di valori della vita umana da Essere a Consumatore spiega l’involuzione consumistica e iper-liberista in tutti i paesi del mondo con lievi sfumature in termini di difesa dei diritti faticosamente acquisiti dai lavoratori nel secolo scorso. Le dinamiche urbane delle esplosioni demografiche declinano gli stessi principi generatori e dalle Città Madri siamo giunti alle megalopoli, inferni di degrado urbano e sociale, di dimensioni mai conosciute prima nella storia. Da questa prospettiva risultano, dunque, del tutto inappropriate le tesi e gli strumenti con cui scienziati e parti politiche credono di trovare soluzioni in grado di coniugare la difesa dell’ambiente e lo sviluppo cosiddetto sostenibile. Nulla è sostenibile concretamente se non si parte dal consapevole controllo delle nascite da un lato e consumo di suolo produttivo di cibo e alimentazione per i popoli della Terra. Come sovrappopolazione e sovraurbanizzazione sono gli aspetti complementari della stessa medaglia cioè del sottosviluppo degli esseri umani allo stesso tempo se si intende realmente di contrastare il consumo di suolo fertile del Pianeta si deve, analogamente, contrastare l’esplosione demografica soprattutto per contenere la sofferenza di migliaia di bambini esposti alla violenza e allo sfruttamento di ogni tipo. Non resta che auspicare maternità e paternità consapevoli e non mettere al modo bambini e bambine oggetto di violenza, sfruttamento, commercio di organi e fame. Né può essere alimentato un modello di organizzazione spaziale e funzionale delle metropoli capitaliste schiacciando i diritti alla vita dei paesi più poveri
Eruption cyclicity of at La Soufrière, St Vincent over the past 5000 years - defining cycles and constraining activity
No full textLa Soufrière Volcano on the island of St Vincent, West Indies, has experienced four historical explosive
eruptions of varying magnitude occurring in 1718, 1812, 1902 and 1979, which define a crude 80-100 year
periodicity to the explosive activity. Recent fieldwork and extensive radiocarbon dating have established the
stratigraphy of these historic as well as of two recent prehistoric events (that occurred in ~1440 and 1580
AD), showing that basaltic andesite scoria-rich pyroclastic density currents (PDCs) were typical in the last
600 years. Our radiocarbon dating shows that a similar broad periodicity of 80-140 years for explosive
eruptions over the last 600 years, although there may have been a general decrease in magnitude and vigor of
the more recent eruptions.
Products on the eastern flank represent two or three notable eruptions of scoria–rich PDC and radiocarbon
dating indicate that these relate to two clusters of dates, one around ~2500 and another at ~4500 yr BP. These
dates suggest that the broad cyclicity of the period between 1000 and 5000 yr BP was characterized by
larger, less frequent, eruptions with relatively minor or no activity between these larger events. The spatial
distribution of the products indicates that PDCs in the last 600 years were significantly controlled by the pre-
existing crater topography, whereas the older events (2000-5000 yr BP) were not. This suggests that the
eruptions between 2000 and 5000 were significantly larger and more vigorous than those in the last 1000
years. It is possible that the size and time scale of these different events results in a bias, with smaller events
being missed or the time period studied is too short to completely capture longer-term cycles. Further
geochronology will refine the nature of eruptive cyclicity
TDR-based measurements of water content in construction materials for in-the-field use and calibration
No full textIn this paper, a time domain reflectometry (TDR)-based system for measuring water content of raw construction materials is presented. The proposed system relies on the fact that the presence of water leads to an increase of the dielectric permittivity of materials; therefore, from TDR-based permittivity measurements, it is possible to infer the water content value. In practical applications, the proposed system could be used for assessing the intrinsic water content of construction materials before they are poured into the concrete mixture. Knowing the intrinsic water content of the raw materials, in fact, would allow to evaluate the optimal amount of water that should be added to the mixture in order to achieve the desired waterto- cement ratio. This, in turn, would permit to fine-tune and control the mechanical properties of the final concrete structures. For assessing the feasibility of using the proposed system for the intended purpose, water content measurements were carried out on three construction materials, namely, sand, gray cement, and white portland cement. For each of these materials, a calibration curve relating water content to the apparent dielectric permittivity was derived; additionally, through repeated measurements, also a confidence interval was associated with the calibration curves