Search results for "WIG"
showing 10 items of 132 documents
Effects of the cluster surface on the electronic shell structure: faceting, roughness and softness
1995
Several simple models have been used to study the effects of the surface on the electronic shell structure in metal clusters. The main results are as follows: The icosahedral clusters have the same electronic shell structure as the sphere up to about 1000 atoms. The surface roughness causes the distribution of the level spacings to be a Wigner distribution. By varying the softness of the potential we can obtain potentials where the simplest classical orbits are the ‘five-point star’ or even ‘the three-point star’.
Essere donna: note sul pensiero pedagogico di Edith Stein e sulla sua amicizia con Hedwig Conrad-Martius
2018
At the beginning of the phenomenological movement, in the so-called "Circle of Monaco and Göttingen", the women students of Husserl played a not marginal role. They have led to the intention of going "to the things themselves" a specific light: the specificity of a feminine phenomenology can be traced in the eidetic interest, i.e. not naturalistic or empirical, for the theme of the structure of the human soul. In this context, the objective of these pages is to focus in particular on one aspect of Edith Stein's strictly pedagogical reflection on the structure of the person: the question about "own nature" and the "vocation" of women. It is considered in the light of her close friendship wit…
Trajectory tracking for an Ultralight WIG
2007
In this paper we present our research about a particular ultralight WIG. We have carried out the design of a Flight Control System that has to fix the control variables trend through a non-linear mathematical model, because of the particular geometric and aerodynamic configuration of this WIG. So, the non-linear mathematical model design has to reproduce exactly the aircraft behaviour either OGE or IGE. In particular, through classical semi-empirical relations, analytical equations have been obtained in order to evaluate incidence variations, downwash and upwash angles due to the ground. In the present paper only longitudinal dynamic is considered, because of its peculiarity in WIG's aircra…
Additional reports for Italian moss flora.
2013
As a result of the study of both recent collections and a review of herbarium specimens, the following taxa are reported for the first time from various Italian regions: Hedwigia stellata Hedenas, Hedwigia ciliata var. leucophaea Bruch & Schimp., Pleurozium schreberi (Willd. ex Brid.) Mitt. and Ptychostomum compactum Hornsch. var. compactum. The last taxon is new for southern Italy, while the report of Pleurozium schreberi confirms the occurrence of this species in southern Italy after more than half a century. Moreover, Crossidium laxefilamentosum Frey & Kurschner represents the second report of this species from Italy.
Il cammino a ritroso: Schorn, Creuzer e il significato della scultura nel «Kunst-Blatt»
2012
The article investigates the reception of Creuzer's crucial text «Symbolik und Mythologie der alten Völker, besonders der Griechen» by the editor of the German art review «Kunst-Blatt».
2006
Understanding evolutionary processes that drive genome reduction requires determining the tempo (rate) and the mode (size and types of deletions) of gene losses. In this study, we analysed five endosymbiotic genome sequences of the gamma-proteobacteria (three different Buchnera aphidicola strains, Wigglesworthia glossinidia, Blochmannia floridanus) to test if gene loss could be driven by the selective importance of genes. We used a parsimony method to reconstruct a minimal ancestral genome of insect endosymbionts and quantified gene loss along the branches of the phylogenetic tree. To evaluate the selective or functional importance of genes, we used a parameter that measures the level of ad…
Multiple paternity and mating group size in the European earwig,Forficula auricularia
2014
The patterns of multiple paternity among the progeny of females are key properties of genetic mating systems. Female multiple mating should evolve due to direct or indirect benefits, but it may also partly be driven by the encounter rate with different potential mates. 2. In this study this hypothesis was experimentally tested in the European earwig (Forficula auricularia L.) by establishing experimental mating groups that differed in the number of males and females (i.e. density). The number of sires and mean sibling relatedness in each clutch were estimated using microsatellite-based paternity analysis. 3. As predicted, the mean number of sires per clutch was significantly increased, and …
Pielgrzymka Ślązaków do Rzymu i Viterbo w 1967 r. Na drodze polsko-niemieckiego pojednania
2018
W dniach od 11 do 21 maja 1967 r. grupa 641 niemieckich Ślązaków pielgrzymowała do Rzymu i Viterbo. Ich celem było wspólne dziękczynienie za dar kanonizacji św. Jadwigi, jakiej w 1267 r. dokonał w Viterbo papież Klemens IV. W taki sposób chciano publicznie zamanifestować obecność Ślązaków w przestrzeni publicznej. W Rzymie i Viterbo modlono się wspólnie za śląską ojczyznę i śląskie rodziny, podzielone poglądami politycznymi, narodowymi i wreszcie żelazną kurtyną. Główne uroczystości dziękczynne miały miejsce w katedrze w Viterbo. Dodatkowo świętowano 100. rocznicę powstania śląskiej grupy maltańskiej, którym patronuje św. Jadwiga, skupiającej w swoich szeregach przedstawicieli najważniejszy…
Solipsismin kritiikki Wittgensteinin myöhäisfilosofiassa
2007
Tässä tutkielmassa käsittelen solipsismin teemaa Ludwig Wittgensteinin myöhäiskauden filosofiassa. Tavoitteena on tarkastella huolellisesti Wittgensteinin solipsismiin liittyviä tekstikokonaisuuksia ja huomautuksia ja selvittää, kuinka näiden kautta hahmottuu moniosainen ja voimakas kritiikki solipsismia vastaan. Esitän, että Wittgensteinin kriittiset argumentit kehittyivät hänen käytyään 1930-luvun alussa ajattelussaan läpi metodologisen solipsismin vaiheen; esitän myös, että Wittgensteinin solipsismin kritiikki pohjautui ”minän” ja ”aistimuksen” käsitteiden kieliopilliseen tarkasteluun; ja että hän tulkitsi metafyysisen solipsismin lähteeksi taipumuksen käyttää tiettyjä käsitteitä irrotet…
Radon transform as a set of probability distributions
2009
It is proved that the Radon transform of the Wigner function gives the probability distributions related to measuring the observable operators obtained as linear combinations of position and momentum of the relevant particle. The generalization to an arbitrary number of degrees of freedom is given.