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Software testing and/or software monitoring: differences and commonalities
No full textValidation is an essential part of the software life cycle. The actual functional and non-functional behaviour of an application needs to be checked against the expected or intended behaviour. Both testing and monitoring are widely used approaches for this purpose. More traditionally testing is considered as a technique for fault removal and forecasting during development. Monitoring is instead conceived for run-time observation of deployed software. Testing and monitoring approaches are usually contrasted as being, respectively, in-the-laboratory vs. in-the-field, and active vs. passive. In this talk I will overview concepts and techniques for software testing and monitoring, and will discuss how for modern pervasive and dynamic software systems the two approaches tend to converge in combined and synergic ways
Consolidated Roadmap
No full textThe present document is the final consolidated version of a roadmap on the long term preservation of Linked Data. Based on current state of the art on digital preservation and Linked Data and a description of related use cases, corresponding challenges and limitations of existing approaches are identified. Then, based on these challenges, a detailed roadmap is proposed for dealing with ingestion of Linked Datasets and changes into the dataset. Keeping track of changes and related technical, challenges are also addressed. Organizational and financial aspects of Linked Data preservation are presented as well. Another issue analysed in this report is how Linked Data can be used for digital preservation. A critical assessment of existing problems, approaches and proposals for Linked Data preservation is included, leading to a set of recommendations and a proposed research agenda
Quality Plan
No full textThis is the Quality Plan for the Learn PAd project, establishing standard procedures for project management and reporting, for communication, for publication of results and documents preparation. The aim is to ensure timely and high-quality achievement of project results. The document is based on and refines project official documents such as the Grant Agreement and the Description of Work. The current document reflects information and decisions available at time of preparation. As the project evolves, further refined versions will be released for internal distribution
Contaminanti nello zooplancton
Get PDFNot availableIndagini su DDT e sostanze pericolose nell\u27ecosistema del Lago Maggiore. Programma 2013-2015. Rapporto annuale 2013 - Contaminanti nello zooplancto
Heliographic signalling in Haploglenius Burmeister, 1839 (Neuroptera Ascalaphidae)
Get PDFThe males of the ascalaphid genus Haploglenius are equipped with a movable pronotal flap, covering a white thoracic membrane, whose function remains poorly known. Few recent original observations, conducted on undisturbed specimens in their natural environment, suggest that this structure is part of a complex visual communication system based on intermittently showing the bright, reflecting, thoracic white area on a dark background. This behaviour is probably associated with courtshi
Breathless and sensitive: groundwater copepod metabolism and response to pollutants
No full textAlthough poorly investigated, there are evidences that groundwater taxa have a lower metabolic rate if compared to their surface-water relatives. This feature allows stygobiotic organisms to be at ease in an environment where food is scarce and poorly nutrient. Moreover, the stability of chemico-physical conditions in groundwater habitats does not require continuous physiological adjustments in contrast to what happens for epigean species in surface water. In this light, to have a fast metabolism is not a benefit but rather a waste of energy. However, what happens to groundwater populations if the chemico-physical environment begins to change rapidly? This scenario is more and more common nowadays, due to anthropogenic contaminations which are depressing groundwater quality worldwide. The effect of adaptation to groundwater environment of groundwater copepods was investigated. Metabolic rate of the stygobiotic copepod species Diacyclops belgicus (Kiefer, 1936) is lower than that of strictly related epigean Eucyclops serrulatus (Fischer, 1851), both belonging to family Cyclopidae and co-occurring in the same habitat. Relationship of oxygen consumption as a function of body mass is allometric for E. serrulatus, irrespective of the ontogenetic stages, isometric for juveniles and oximetric for adults of D. belgicus. The constant metabolic rates observed for adults of D. belgicus is advantageous in oligotrophic groundwater habitats, where large fluctuations in oxygen availability also occur. On the contrary, juvenile stages of this species are able to develop faster when the trophic resources are available, so quickly reaching sexual maturity. However, these metabolic adaptations might delay the onset of defence mechanisms against toxicants. D. belgicus proved to be more sensitive that E. serrulatus to a wide range of pollutants. A review of the available data concerning ecotoxicological studies performed on stygobiotic copepods and an analysis of their sensitivity to pollutants in comparison to epigean freshwater relatives is presented
Changes in management, climate and N deposition explain recent deviation from expected growth in mature Spruce and Beech forests in Italy
Get PDFA study on the effect of N deposition on tree grwoth in Italian forest
Batch growth of Chlorella Vulgaris CCALA 896 versus semi-continuous regimen for enhancing oil-rich biomass productivity
Get PDFThe aim of this study was to induce lipid accumulation in Chlorella cells by creating stressful growth conditions. Chlorella vulgaris CCALA 896 was grown under various batch growth modes in basal and modified BG-11 and Kolkwitz culture broths, using a continuous light regimen of 150 ?E/m2/s, at 30 ?C. In order to perform the experiments, two indoor photobioreactor shapes were used: a cylindrical glass photobioreactor (CGPBR) with a working volume of 350 mL, and a flat glass photobioreactor (FGPBR) with a working volume of 550 mL. Stress-eliciting conditions, such as nitrogen and phosphorous starvation, were imposed in order to induce lipid accumulation. The results demonstrated that more than 56% of the lipids can be accumulated in Chlorella biomass grown under two-phase batch growth conditions. The highest biomass productivity of 0.30 g/L/d was obtained at the highest nominal dilution rate (0.167 day?\u271) during a semi-continuous regimen, using a modified Kolkwitz medium. During the pH-stress cycles, the amount of lipids did not increase significantly and a flocculation of Chlorella cells was noted
Limnology in the 21st century: the importance of freshwater ecosystems as model systems in ecology and evolution
Get PDFIn 1990, in order to celebrate the 50th anniversary of the former Italian Institute of Hydrobiology, now Institute of Ecosystem Study, a special issue summarising the advances in limnology was published by Memorie dell\u27Istituto Italiano di Idrobiologia, now Journal of Limnology. After 25 years, it is time again for a synthesis of what limnology did in the past, but mostly for suggestions on widening the horizon of the discipline, by including new tools and techniques. We hope that limnology will live long, and we celebrate the 75th anniversary of the Institute with this special issue, containing manuscripts on the advances in the field and introducing recent and new lines of research in lentic waters studies
ASSESSMENT OF MACROZOOBENTHIC DISTRIBUTION IN THE MANFREDONIA GULF (EASTERN MEDITERRANEAN)
No full textSoft bottom macrozoobenthic distribution, as well as its composition, biomass and diversity were studied at 9 stations in the Gulf of Manfredonia. Polychaeta were numerically the dominant component (71%), followed by Crustacea (21%) and Bivalvia (2%). The highest biodiversity was observed at the stations in near-shore of the study area