Search results for "Ocean Engineering"
showing 10 items of 404 documents
Some conventional and unconventional educational column stability Problems
2006
Two interesting problems are considered for enriching the curriculum of the Strength of Materials course, in the light of recently developed functionally graded materials (FGMs), characterized with the smooth variation of the elastic modulus. These are problems associated with buckling of columns with variable flexural rigidity along the axis of the column. A simple semi-inverse method is proposed for determining closed-form solutions of axially inhomogeneous columns. In order for the presentation to be given in one package, the conventional problems are also recapitulated along with the novel ones. The main approach adopted here is the use of the second-order differential equation, instea…
Sur la présence de matières organiques mésocénozoïques dans des humus actuels (bassin de Chaillexon, Doubs, France)
1998
Abstract The optical analysis in the Chaillexon watershed (Doubs, France), of the present soils' humus layers' organic matter points out the contribution of Meso-Cenozoic organic matter in addition to the one produced by vegetal cover. Their relative occurrence varies in each layer: in the reverse of that of vegetal organic matter, the relative amount of Meso-Cenozoic organic matter increases according to the depth. That result shows that the total organic matter amounts in soils (and its evaluation) do not only depend on the net primary production and that geological formations have to be taken into account. Moreover, it suggests that present and past detrital supplies are concerned with ‘…
Nuove generazioni: la genitorialità nelle famiglie contemporanee
2017
Anche l'Italia, come altri Paesi, ha accolto, sia nella sua cornice sociale sia in quella giuridica, nuove forme familiari che hanno suscitato disorientamento in alcune fasce della popolazione; coppie di fatto, omosessuali, miste sono soltanto alcuni esempi, infatti, che hanno creato disagio soprattutto in adulti sposati, in soggetti anziani o nei più conservatori. Le critiche, o i dubbi, si muovono nello specifico attorno all'idoneità educativa delle famiglie contemporanee, che si formano, si trasformano, si espandono, si dividono e scompaiono . Si tratta, però, di trasformazioni che non compromettono il valore sociale della famiglia stessa o il livello di benessere dei singoli componenti;…
Metodologies competencials en la formació literària de mestres: experiències didàctiques per fomentar el pensament reflexiu: Competence-based methodo…
2023
L’objectiu d’aquest article és descriure i analitzar alguns projectes d’educació literària realitzats durant els últims vuit anys en el marc de la formació de docents per tal de reflexionar sobre la importància de l’ús de metodologies actives i competencials per l’ensenyament de la literatura al context universitari. Aquests projectes conformen experiències didàctiques com ara tallers d’escriptura, rutes literàries i l’ús dels videojocs per al foment lector. Presentem un comentari qualitatiu dels resultats d’aprenentatge més significatius i de la valoració dels estudiants a partir de la tria de diverses mostres. Finalment, arribem a la conclusió que aquestes experiències promouen no només l…
INCOME AND QUALITY OF LIFE INFLUENCE ON CITIZENS' PARTICIPATION IN ACTIVITIES OF LOCAL GOVERNMENTS IN LATVIA
2018
The aim of the paper is to analyse the factors influencing the citizen participation in activities of local governments in relation to quality of life in Latvia. The use of the CLEAR model, elaborated by a group of British researchers under guidance of Gerry Stoker, shows the possibilities of participation and engagement of citizens based on theoretical aspects. Latvia, as a member state of the EU, needs to develop and to involve more citizens in different social activities, since it has comparatively small experience in democratic processes due to its past of 50 years being a part of another country — the Soviet Union. The opportunities to participate in the European Parliament’s election …
A New Solution for Sea Wave Energy Harvesting, the Proposal of an Ironless Linear Generator
2020
The paper investigates an innovative ironless linear generator, installable inside a wave energy converter, in order to produce electricity from sea waves. This energy source is considered strategic for the future, especially in small islands
Automated Plankton Classification With a Dynamic Optimization and Adaptation Cycle
2022
With recent advances in Machine Learning techniques based on Deep Neural Networks (DNNs), automated plankton image classification is becoming increasingly popular within the marine ecological sciences. Yet, while the most advanced methods can achieve human-level performance on the classification of everyday images, plankton image data possess properties that frequently require a final manual validation step. On the one hand, this is due to morphological properties manifesting in high intra-class and low inter-class variability, and, on the other hand is due to spatial-temporal changes in the composition and structure of the plankton community. Composition changes enforce a frequent updating…
Anti-inflammatory activity in selected Antarctic benthic organisms
2014
Antarctic benthos was prospected in search for anti-inflammatory activity in polar benthic invertebrates, in two different geographical areas: deep-bottoms of the Eastern Weddell Sea and shallow-waters of the South Shetland Islands. A total of 36 benthic algae and invertebrate species were selected to perform solubility tests in order to obtain extracts that were soluble at an innocuous ethanol concentration (0.2%) for cell culture, and further test them for anti-inflammatory activity. From these, ethanol extracts of ten species from five different phyla resulted suitable to be studied in cell macrophage cultures (RAW 264.7). Cytotoxicity (MTT method) and production of inflammatory mediator…
Global-Scale Environmental Niche and Habitat of Blue Shark (Prionace glauca) by Size and Sex: A Pivotal Step to Improving Stock Management
2022
25 pages, 10 figures, 2 tables, supplementary material https://www.frontiersin.org/articles/10.3389/fmars.2022.828412/full#supplementary-material.-- Data Availability Statement: The blue shark habitat data are available on the JRC Data Catalogue (https://data.jrc.ec.europa.eu/dataset?q=fish%20habitat) (or upon request) and habitat maps are available online (https://fishreg.jrc.ec.europa.eu/web/fish-habitat/habitatmapping). Chlorophyll-a data are available online (https://oceancolor.gsfc.nasa.gov/cgi/l3). The abiotic environmental and mesopelagic micronekton data are available online (https://marine.copernicus.eu/access-data).