Search results for "Planetar"

An Autonomous System to Take Angular Thermal-Infrared Measurements for Validating Satellite Products

2015

An autonomous system for field land surface temperature (LST) measurements taken at different observation angles was developed to be deployed easily at any conventional meteorological tower station. The system permits ground-truth data to be acquired on a continuous basis, and angularly scans land and sky hemispheres with a single thermal-infrared (TIR) radiometer. This paper describes the autonomous angular system and the methodology to assess ground-truth LST and relative-to-nadir emissivity data from system measurements. Ground-truth LSTs were used to validate satellite-retrieved LST products at two experimental sites (rice crop and shrubland areas). The relative-to-nadir emissivity valu…

Taxa a rischio nella flora vascolare della Sicilia

2011

Biogeographia vol. XgO( - 2011 (Pubblicato il 23 dicembre 2011) La Biogeografia de/Ia Sicilia Taxa a rischio nella flora vascolare della Sicilia FRANCESCO MARIA RAIMONDO, GIUSEPPE BAZAN, ANGELO TROIA Dzjzartimento di Biologia Ambientale e Biodiversitd, Universird di Palermo via Arc/aimfi 38, 90123 Palermo (Italy) Key words: threatened species, vascular flora, red list, Sicily. SUMMARY An analysis was made to update the regional red list of endangered vascular plants in Sicily which, with 3,252 taxa (including a noteworthy number of endemic species), is one of the richest areas in the Mediterranean region. Considering previous regional and national red lists, recent taxonomic and floristic lite…

Verifying the predicted risk of extinction based on ecological characteristics

2021

Red List status of species should reflect species extinction risk. Because data are limited and species response has a time lag, species may be threatened by extinction even if they are not Red‐Listed. The ability to predict species risk of extinction from ecological characteristics holds promises for proactively targeting conservation measures to species at high risk. In 2005, the risk of extinction from ecological characteristics was predicted for 81 species of Finnish butterflies. Now, after 15 years and two additional national Red List assessments, these predictions are verified. Species with a higher risk of extinction according to the original ecological extinction risk rank (EERR) ha…

Samtal om Budkavlen : hågkomster från 1970–1990-talen

2022

Med anledning av Budkavlens 100-årsjubileum fick jag i uppdrag att intervjua två av tidskriftens tidigare medarbetare – professor emeritus Nils Storå och intendent John Hackman – om deras erfarenheter av utgivningen av tidskriften under 1970–1990-talen. Nils Storå (f. 1933) var professor i nordisk etnologi under åren 1972–1997 och John Hackman (f. 1942) var amanuens vid Sjöhistoriska museet 1972–1975 och därefter intendent vid Etnologiska institutionen fram till sin pensionering 2005. Texten nedan ger en bild av hur det var att driva en humanistisk vetenskaplig tidskrift under 1900-talets sista decennier. Samtalet som återges är fiktivt i den meningen att jag valt att placera mina frågor oc…

Science for everyone

2022

Conjunctions and syntactic complexity: Development of the use of conjunctions in written learner Finnish

2022

Kielitaidon kehittymistä voidaan tutkia mittaamalla oppijankielen sujuvuutta, tarkkuutta ja kompleksisuutta. Kompleksisuus voidaan määritellä oppijankielen monipuolisuudeksi ja kehittyneisyydeksi, mutta syntaktista kompleksisuutta on kansainvälisessä toisen kielen oppimisen tutkimuksessa tyypillisesti mitattu alisteisiin lauserakenteisiin perustuvilla kvantitatiivisilla mittareilla. Tässä artikkelissa syntaktisen kompleksisuuden kehitystä tutkitaan tarkastelemalla rinnastus- ja alistuskonjunktioiden käyttöä suomi toisena kielenä -teksteissä Eurooppalaisen viitekehyksen eri taitotasoilla. Aineistona käytetään Jyväskylän yliopiston Cefling-hankkeen oppijansuomen korpuksen tekstejä. Rinnasteis…

Anonymization as homeomorphic data space transformation for privacy-preserving deep learning

2021

Industry 4.0 is largely data-driven nowadays. Owners of the data, on the one hand, want to get added value from the data by using remote artificial intelligence tools as services, on the other hand, they concern on privacy of their data within external premises. Ideal solution for this challenge would be such anonymization of the data, which makes the data safe in remote servers and, at the same time, leaves the opportunity for the machine learning algorithms to capture useful patterns from the data. In this paper, we take the problem of supervised machine learning with deep feedforward neural nets and provide an anonymization algorithm (based on the homeomorphic data space transformation),…

Konfigurowanie granic gatunkowych a problem polityczności. Przypadek posthumanizmu i transhumanizmu

2017

Przedmiotem artykułu są teoriopolityczne rozważania na temat posthumanizmu. Jest to podejście, które zrywa z humanistycznym dogmatem, że człowiek jest bytem najważniejszym w rzeczywistości. Zamiast tego posthumanizm dowartościowuje byty pozaludzkie (naturalne, sztuczne, rzeczy), z którymi ludzie wchodzą w rozmaite interakcje. Autor uznał, że problematyka posthumanistyczna może być rozpatrywana w perspektywie biopolityki, która zajmuje się relacjami między polityką a życiem. Jednakże w odróżnieniu od wcześniejszych ujęć wiążących biopolitykę z kontrolą populacji posthumanizm stawia na szali żywotność gatunkową. W artykule przedstawiono konsekwencje takiego myślenia dla problemu polityczności…

Three-dimensional core-collapse supernovae with complex magnetic structures: I. Explosion dynamics

2021

Magnetic fields can play a major role in the dynamics of outstanding explosions associated to violent events such as GRBs and hypernovae, since they provide a natural mechanism to harness the rotational energy of the central proto-neutron star and power relativistic jets through the stellar progenitor. As the structure of such fields is quite uncertain, most numerical models of MHD-driven core-collapse supernovae consider an aligned dipole as initial magnetic field, while the field's morphology can actually be much more complex. We present three-dimensional simulations of core-collapse supernovae with more realistic magnetic structures, such as quadrupolar fields and, for the first time, an…

The impact of non-dipolar magnetic fields in core-collapse supernovae

2019

The magnetic field is believed to play an important role in at least some core-collapse supernovae if its magnitude reaches $10^{15}\,\rm{G}$, which is a typical value for a magnetar. In the presence of fast rotation, such a strong magnetic field can drive powerful jet-like explosions if it has the large-scale coherence of a dipole. The topology of the magnetic field is, however, probably much more complex with strong multipolar and small-scale components and the consequences for the explosion are so far unclear. We investigate the effects of the magnetic field topology on the dynamics of core-collapse supernovae and the properties of forming proto-neutron star (PNS) by comparing pre-collap…