Search results for "RAM"
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Ruolo delle politiche urbane contro la segregazione e per il riconoscimento di un plurale diritto alla città
2015
L'articolo affronta il complesso ruolo delle politiche urbane alla luce del profondo cambiamento della società italiana, sempre più segnata da fenomeni di frammentazione e impoverimento. La suddetta analisi è condotta attraverso la lettura delle trasformazioni della dimensione spaziale la cui natura segregativa si riscontra con maggiore frequenza oggi nelle realtà urbane italiane, coinvolgendo vecchi e nuovi abitanti, con plurali articolazioni di popolazioni e spazi e conseguenti disuguaglianze che caratterizzano i primi nella fruizione dei secondi.
Tēlainība politikas valodā
2017
Bakalaura darba tēma ir “Tēlainība politikas valodā”. No visiem tēlainās izteiksmes līdzekļiem šajā darbā tiek aplūkotas metaforas. Darba mērķis ir konstatēt metaforu tipus un to funkcijas runās, kas izskan no Saeimas tribīnes. Darba teorētiskajā daļā tiek raksturots politikas jēdziens un indivīda vieta politikā, noskaidrotas politikas valodas galvenās iezīmes, kā arī pētīts metaforas jēdziens.
Populisma līmeņa izvērtējums jaundibināto politisko partiju komunikācijā Latvijā
2022
Bakalaura darba nosaukums ir “Populisma līmeņa izvērtējums jaundibināto politisko partiju komunikācijā Latvijā”. Darba mērķis ir noteikt populisma līmeņus jaundibināto politisko partiju komunikācijā Latvijā. Darba uzdevumi ietver temata teorētiskā rāmja izstrādi, kurā apkopotas populisma iezīmes, darbības sfēras, populistisku līderu komunikācijas iezīmes un sociālo mediju izmantošana politiskās komunikācijas veidošanā; jaundibināto politisko partiju “Katram un katrai” un “Latvija pirmajā vietā” manifestu, rezolūciju, vēlēšanu programmu un publicēto video materiālu analīzi, nosakot kādas populistiskas komunikācijas pazīmes ir novērojamas partiju politiskajā komunikācijā un sabiedrībai sniegt…
Voronoin diagrammin sovellukset reitinhaussa
2017
Reitinhaussa on tavoitteena löytää sopiva reitti paikasta toiseen. Reitinhaulle on sovelluksia monella alalla. Tässä tutkielmassa käsitellään erään laskennallisen geometrian rakenteen, Voronoin diagrammin, käyttöä reitinhaussa. Voronoin diagrammin avulla saadaan löydettyä reittejä, jotka pysyttelevät mahdollisimman kaukana esteistä. Tällainen reitti ei ole pituudeltaan optimaalinen, minkä takia sitä muokataan useissa sovelluksissa lyhyemmäksi säilyttäen kuitenkin tarvittava etäisyys esteisiin. Tutkielmassa esitellään myös sovelluksia, joissa käytetään Voronoin diagrammin eri variaatioita tai yhdistetään se muihin menetelmiin. Lisäksi Voronoin diagrammiin perustuvia reitinhakumenetelmiä vert…
Experimental and theoretical studies on corals. I. Toward understanding the origin of color in precious red corals from Raman and IR spectroscopies a…
2010
An attempt to explain the origin of the vivid red color in precious pink and red corals was undertaken. Raman and IR spectroscopies were applied to characterize white, pink and red corals. The position of the Raman signal near 1500 cm−1 of some corals and pearls was associated by several authors with the presence of the mixture of all‐trans‐polyenic pigments, containing 6–16 conjugated CC bonds or β‐carotenoids. This hypothesis was examined theoretically by performing extensive B3LYP‐DFT calculations of vibrational spectra of the model polyenic compounds. The B3LYP/6‐311++G** predicted positions of the dominating Raman mode depend on the number of CC units (Cn parameter) and can be accura…
Modeling red coral (Corallium rubrum) and African snail (Helixia aspersa) shell pigments: Raman spectroscopy versus DFT studies
2016
Pigments from red coral (Corallium rubrum) and African snail (Helixia aspersa) shell were studied non-invasively using Raman spectroscopy with 1064-nm laser beam. The two observed bands because of organic pigments confined in biomineralized CaCO3 matrix at about 1500 and 1100 cm−1 were assigned to ν(C[DOUBLE BOND]C) and ν(C―C), respectively. Both signals originate from polyene(s) of largely unknown structure, containing several conjugated C[DOUBLE BOND]C bonds. The small peak at 1016 cm−1 in the Raman spectrum of coral pigment was assigned to in-plane ―CH3 rocking or structural deformation of polyene chain because of spatial confinement in the mineral matrix. The organic pigments in red cor…
Raman Investigations to Identify Corallium rubrum in Iron Age Jewelry and Ornaments
2016
International audience; During the Central European Iron Age, more specifically between 600 and 100 BC, red precious corals (Corallium rubrum) became very popular in many regions, often associated with the so-called (early) Celts. Red corals are ideally suited to investigate several key questions of Iron Age research, like trade patterns or social and economic structures. While it is fairly easy to distinguish modern C. rubrum from bone, ivory or shells, archaeologists are confronted with ancient, hence altered, artifacts. Due to ageing processes, archaeological corals lose their intensive red color and shiny surface and can easily be confused with these other light colored materials. We pr…
Enhanced chain dynamics in loop-sorting-systems by means of layout optimization and a kinematic model of the polygon action
2012
Published version of an article in the journal: Structural and Multidisciplinary Optimization. Also available from the publisher at: http://dx.doi.org/10.1007/s00158-011-0743-7 Poor dynamics owing to polygon action is a known concern in mechanical applications of closed articulated chains. In this paper a kinematic model of the polygon action in large chains of loop-sorting-systems is proposed. Through optimization techniques the chain dynamics is improved by minimizing the polygon action using a parametric model of the track layout as design variables. Three formulations of the kinematic polygon action are tested on an average sized planer tracks layout to find a superior model. Verificati…
Low-temperature single crystal X-ray diffraction and high-pressure Raman studies on [(CH3)2NH2]2[SbCl5]
2007
The structure of bis(dimethylammonium) pentachloroantimonate(III), [(CH{sub 3}){sub 2}NH{sub 2}]{sub 2}[SbCl{sub 5}], BDP, was studied at 15 K and ambient pressure by single-crystal X-ray diffraction as well as at ambient temperature and high pressures up to 4.87(5) GPa by Raman spectroscopy. BDP crystallizes in the orthorhombic Pnma space group with a=8.4069(4), b=11.7973(7), c=14.8496(7) A, and Z=4; R{sub 1}=0.0381, wR{sub 2}=0.0764. The structure consists of distorted [SbCl{sub 6}]{sup 3-} octahedra forming zig-zag [{l_brace}SbCl{sub 5}{r_brace}{sub n}]{sup 2n-} chains that are cross-linked by dimethylammonium [(CH{sub 3}){sub 2}NH{sub 2}]{sup +} cations. The organic and inorganic substr…
Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction
2016
Poly(butylene succinate)/MWCNTs nanocomposites with improved dispersion and with nanotubes embedded/immobilized into the polymer matrix were here prepared by an alternative "grafting to" method based on thenitroxide radical coupling reaction. Poly(butylene succinate) (PBS) was grafted on the surface of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) modified multi-walled carbon nanotubes (MWCNTs) via a nitroxide radical coupling reaction. TEMPO functionalized MWCNTs (MWCNTs-g-TEMPO) were synthesized using the Cu(I)-catalyzed azide/alkyne click chemistry approach and the covalent bond of the nitroxide moieties onto the MWCNTs was confirmed via electron paramagnetic resonance (EPR) spectroscopy.…