268 research outputs found
Manuale di Storia Romana 5 edizione
No full textCapitoli dal XXV al XXX (storia romana della tarda antichità
SHA, Vita Cari 2-3: un excerptum di biologismo storico
No full textHo presentato in questa rivista, della quale sono collaboratore assiduo, per gentile concessione delle colleghe Christiane Reitz e Marietta Horster, la relazione tenuta alla Fondation Hardt l’8/2/8 nel corso del III Workshop su “Verdichten, Ordnen und Vermitteln – Texte und Verkürzungen”, promosso dall’Università di Rostock e da loro magistralmente organizzato e diretto. Nell’applicazione del biologismo alla storia di Roma, l’excursus di SHA, Car. 2-3 segna il punto d’arrivo di un percorso tracciato da Varrone Reatino con il De vita populi Romani; la reviviscenza tardoantica del poligrafo si verifica attraverso vari autori, in primis Agostino, che presenta alcuni passi del De civitate Dei decisivi per chiarire punti controversi comuni all’HA e al Seneca di Lattanzio, risalenti entrambi in ultima analisi a Varrone. Da costoro, oltre che da Floro, il più aderente nel rispettare la demarcazione varroniana al 264 fra adulescentia e iuventus, ha preso le mosse il sedicente Vopisco, caratteristico nel riproporre la tripartizione delle singole età peculiare di Varrone, a quanto asserito da Servio. Tutti gli epigoni varroniani, a partire da Seneca, hanno postdatato al principato postaugusteo la diagnosi di senectus imperii a causa dell’amissa libertas, suggerita a Varrone dall’esperienza triumvirale e della dittatura di Cesare
Magali Bessone et Mathieu Renault, W. E. B. Du Bois. Double conscience et condition raciale
No full textMagali Bessone et Mathieu Renault, chercheur et chercheuse en philosophie, livrent un essai sur William Edward Burghart Du Bois pour comprendre le contexte brûlant faisant état de diverses luttes sociales et politiques. Par exemple, celles portées par le mouvement Black Lives Matter (« les vies noires comptent ») depuis 2013 aux États-Unis qui redonnent du relief à la figure incontournable de W. E. B. Du Bois. Le mouvement afro-américain milite comme lui contre le racisme systémique envers l..
Prototyping of Lunar surface geological sampling tools for Moon spacewalk simulations by ESA
No full textApollo Lunar missions returned to scientists on Earth the first collection of geological extra-terrestrial planetary
samples, other than meteorites. Scientists around the world are still studying rocks and soil samples that were
collected, by the Apollo 11 through 17 missions, using modern equipment, methods and technologies. The return of samples has allowed the field of planetary science to advance in ways unthinkable with the restrictions of in-situ analysis and remote observations.
As for every other aspect of the Apollo programme, the design and manufacturing of the tools utilized by
astronauts for sample collection had to meet rigorous planetary protection requirements, whilst respecting stringent environmental and operability constraints. Many of those tools went through various redesign efforts, based on feedback from the very skillful and resourceful astronauts using them. In future planetary exploration missions, geological and geo-microbiological sampling will be a key to further development of our understanding of the evolution of the solar system, and to develop successful technologies for in-situ resource utilization and 3D printing. Designing and manufacturing technologies and ergonomics have developed since the 1960s, and so have chemical and biological hazard containment protocols, and analytical tools. Whilst it is important to solidly build on the lessons learned in the Apollo era, there is a serious opportunity for innovative design solutions. The European Space Agency (ESA) Neutral Buoyancy Facility (NBF) based in the European Astronaut Centre (EAC) in Cologne has a large experience in performing 0g simulations for ISS (International Space Station) Extra Vehicular Activities (EVA), and has recently engaged in simulations of Lunar surface operations, replicating reduced gravity and mobility constraints, in order to prepare future human and robotics surface operations. One of the main objectives within this area is prototyping and testing new geological sampling tools which could be used in future human surface Lunar missions. The tools are being developed in cooperation with the team of planetary geologists of the PANGAEA project (Planetary ANalogue Geological and Astrobiological Exercise for Astronauts), and field tested during the PANGAEA Space Analogue test campaigns.
This paper discusses the requirements and objectives to be met while developing such tools, the challenges
related to EVA suits and Lunar environment which impact the astronauts’ mobility and tools performance. It presents the status of development achieved during NBF and PANGAEA analogue field testing. The examples include a variety of sample collectors, containers, markers and the outcome of test performed in various mission scenarios
Human Physiology During Exposure to the Cave Environment : a Systematic Review With Implications for Aerospace Medicine
No full textBackground: Successful long-duration missions outside low-Earth orbit will depend on technical and physiological challenges under abnormal environmental conditions. Caves, characterized by absence of light, confinement, three-dimensional human movement and long-duration isolation, are identifiably one of the earliest examples of scientific enquiry into space analogs. However, little is known about the holistic human physiological response during cave exploration or prolonged habitation. Objectives: The aim of our review was to conduct a systematic bibliographic research review of the effects of short and prolonged exposure to a cave environment on human physiology, with a view to extend the results to implications for human planetary exploration missions. Methods: A systematic search was conducted following the structured PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines for electronic databases. Results: The search retrieved 1,519 studies. There were 50 articles selected for further consideration, of which 31 met our inclusion criteria. Short-term cave exposure studies have investigated visual dysfunction, cardiovascular, endocrine-metabolic, immunologic-hematological and muscular responses in humans. Augmentations of heart rate, muscular damage, initial anticipatory stress reaction and inflammatory responses were reported during caving activity. Prolonged exposure studies mainly investigated whether biological rhythms persist or desist in the absence of standard environmental conditions. Changes were evident in estimated vs. actual rest-activity cycle periods and external desynchronization, body temperature, performance reaction time and heart rate cycles. All studies have shown a marked methodological heterogeneity and lack reproduction under controlled conditions. Conclusions: This review facilitates a further comparison of the proposed physiological impact of a subterranean space analog environment, with existing knowledge in related disciplines pertaining to human operative preparation under challenging environmental conditions. This comprehensive overview should stimulate more reproducible research on this topic and offer the opportunity to advance study design and focus future human research in the cave environment on noteworthy, reproducible projects
Il matrimonio dei culti acattolici
No full textLa ricerca esamina la disciplina giuridica del matrimonio, con specifico riferimento alla disciplina di questo istituto cui possono ricorrere gli appartenenti a culti diversi da quello cattolico affinchè i matrimonio da loro celebrati nell''osservanza della forma confessionale ottengano il riconoscimento degli effetti civili.
L''attenzione si concentra pertanto, in primo luogo, sulla disciplina matrimoniale contenuta nella legge n. 1159/1929, c.d. legge sui culti ammessi, tuttora applicabile alle confessioni religiose che non abbiano stipulato un''intesa con lo Stato ai sensi dell''art. 8.3 Cost.
In secondo luogo l''autore esamina le diverse regolamentazioni dell''istituto matrimoniale, rinvenibili nelle intese di cui sopra, distinguendo un gruppo di intese che, sotto questo profilo, contengono discipline pressoché identiche - si tratta di quelle stipulate con valdesi, avventisti, ADI, battisti e luterani - dall''intesa ebraica, unica a presentare qualche specificità degna di rilievo.
In ultimo, l''autore formula qualche prospettiva per il futuro, anche alla luce della possibile emanazione di una legge generale unilaterale sulla libertà religiosa che sostituisca la citata legge n. 1159/192
Machine learning for recognizing minerals from multispectral data
No full textMachine Learning (ML) has found several applications in spectroscopy, including recognizing minerals and estimating elemental composition. ML algorithms have been widely used on datasets from individual spectroscopy methods such as vibrational Raman scattering, reflective Visible-Near Infrared (VNIR), and Laser-Induced Breakdown Spectroscopy (LIBS). We firstly reviewed and tested several ML approaches to mineral classification from the existing literature, and identified a novel approach for using Deep Learning algorithms for mineral classification from Raman spectra, that outperform previous state-of-the-art methods. We then developed and evaluated a novel method for automatic mineral identification from combining measurements with two complementary spectroscopic methods using Convolutional Neural Networks (CNN) for Raman and VNIR, and cosine similarity for LIBS. Specifically, we evaluated fusing Raman + VNIR, Raman + LIBS or VNIR + LIBS spectra in order to classify minerals. ML methods applied to combined spectral methods presented here are shown to outperform the use of a single data source by a significant margin. Our approach was tested on both open access experimental Raman (RRUFF) and VNIR (USGS, RELAB, ECOSTRESS) libraries, as well as on synthetic LIBS (NIST) spectral libraries. Our cross-validation tests show that multi-method spectroscopy paired with ML paves the way towards rapid and accurate characterization of rocks and minerals. Future solutions combining Deep Learning Algorithms, together with data fusion from multi-method spectroscopy, could drastically increase the accuracy of automatic mineral recognition compared to existing approaches
Il diritto della distribuzione commerciale
No full textCollana Consumatori oggi, diretta da M. Bessone e P. Perlingier
The Electronic FieldBook: A system for supporting distributed field science operations during astronaut training and human planetary exploration
No full textScientific exploration will play an important role in future human missions to the Moon and Mars. Extra-Vehicular Activities (EVA) on the surface of these objects will be supported by a host of technologies driving operations and data collection. In order to enhance the scientific return of each EVA and utilise expertise located on Earth, it is necessary to record, index and store all the scientific information collected on a planetary surface, and rapidly distribute it amongst the relevant mission support personnel in a structured way. How this information is stored and shared amongst mission support elements will make a significant difference to the feedback that can be provided to EVA teams before, during, and after exploratory EVAs. The Electronic Fieldbook (EFB) is an innovative information system, developed by the European Space Agency (ESA) in the context of their astronaut field training courses and test campaigns, composed of deployable hardware and software designed to fulfil this role. The system uses peer-to-peer networking and mesh protocols to provide disruption tolerant data transmission, as well as information harmonisation and sharing among all system users. Its software stack is platform agnostic, and the system is able to interface with external instruments and tools to gather and centralise data. A combination of commercial off the shelf and custom hardware currently supports the EFB network and interfaces. Users can collect scientific data and document sampling procedures through attaching images, instrument readings, written and audio notes, and other metadata, and have it automatically distributed to all authorised users across its network. Through this system, the EFB enables real-time situational awareness to all science instructors and simulated mission support positions, such as mission control, science backrooms, and Intra-Vehicular crew. The EFB has been developed in the context of the CAVES and PANGAEA astronaut training programmes developed by ESA and is targeting deployment in future lunar and Martian human exploration missions
Il diritto dei consumi. Realtà e prospettive
No full textCollana Consumatori oggi, diretta da M. Bessone e P. Perlingier
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