Search results for "GLASS"
showing 10 items of 1153 documents
L'altro Novecento. Il minimalismo nella musica del nostro tempo
2005
Il termine "minimalismo" si diffonde nel lessico della critica d'arte fin dall'inizio degli anni Trenta, ma è divenuto oggi sinonimo di linearità e rigore negli ambiti dell'architettura, delle arti figurative e della musica, ma anche nei mondi paralleli della moda, della pubblicità e del design. Assumendo l'idea del rapporto fra "ornamento e delitto" come fil rouge che attraversa il Novecento e congliunge, nel segno di un'ascetica ricerca dell'essenza, le forme primordiali di Brancusi e gli aforismi di Anton Webern alle grandi sculture inespressive di Morris e Judd e al teatro di Robert Wilson, il volume è costituito da otto capitoli/saggi che si configurano come altrettante riflessioni sul…
Il controllo dell’employer branding nello spazio pubblico in rete
2017
Obiettivo di questo articolo è comprendere in che misura l’Employer Branding (EB) esprima un’autentica realtà aziendale oppure sia solo una ben orchestrata suggestione organizzativa. Dopo averne riscostruito il significato e l’impatto sul ciclo di gestione delle risorse umane (recruitment, commitment e retention), lo studio descrive tre modalità di controllo dell’EB: il controllo interno, professionale e pubblico. Le caratteristiche e le implicazioni critiche di un caso di controllo pubblico dell’EB quale Glassdoor.com vengono presentate. In particolare vengono illustrati la struttura, i servizi e le criticità della piattaforma crowdsourcing-based di Glassdoor.com (usi ritorsivo, scorretto,…
Appearance or reality? Monitoring of employer branding in public network space: the Glassdoor case
2017
To what extent does Employer Branding (EB) express the real‐life company working environment or merely constitutes a well‐orchestrated organizational image? After reconstructing its significance and impact on the managing of the human resource cycle (recruitment, commitment, and retention) this study describes three ways of monitoring EB: internal, professional and public control. They each make use of a variety of tools in order to assess the extent to which the appearance of the employer corresponds to an authentic reality. Then, there is a presentation of the features and critical issues of a case of public EB control: Glassdoor.com. More specifically, this is followed by descriptions of…
Women e-participation: glass ceiling decrease?
2012
This paper aims to review useful theoretical frame work able to encapsulate new frontiers of research on women political participation. In particular based on the feminist dichotomy of public and private sphere it investigates how Internet can enrol women in solving glass ceiling in political activism and participation considering its grassroots networked nature.
Shear elasticity of mixed cyanide orientational glass
1993
Four mixed crystals of KBr:KCN and NaCN:KCN, complemented by KCN, have been investigated by torque-shear measurements. The real and imaginary parts of the shear compliance ${\mathit{s}}_{44}$ at a measuring frequency of 2 Hz have been determined. Zero-field-cooling--field-cooling--remanent-shear-strain cycles have been performed. For (KBr${)}_{0.47}$(KCN${)}_{0.53}$ the creep after zero-field cooling and the elastic aftereffect after field cooling have been followed within a time window from 0.1 to ${10}^{4}$ s. Results on the nonlinear part of the shear compliance have been obtained. It is shown that the field-cooled strain represents the static limit of the elastic response. The results a…
Raman spectroscopy study of β-irradiated silica glass
2003
International audience; Natural and synthetic silica glass samples with different OH content have been submitted to β-irradiation at different doses from 106 to 5 × 109 Gy in a Van de Graaff accelerator. Structural changes under irradiation have been analyzed by Raman spectroscopy. The main findings are: (i) a decrease of the Si–O–Si angular dispersion and the average Si–O–Si angle as a function of dose and (ii) an increase of number of three-membered SiO4 ring concentration during irradiation. These results show therefore that purely electronic excitation from β-irradiation induces in a-SiO2 small but significant structural changes of the SiO4 membered ring statistics (size and dispersion)…
Baseline design of the filters for the LAD detector on board LOFT
2014
The Large Observatory for X-ray Timing (LOFT) was one of the M3 missions selected for the phase A study in the ESA's Cosmic Vision program. LOFT is designed to perform high-time-resolution X-ray observations of black holes and neutron stars. The main instrument on the LOFT payload is the Large Area Detector (LAD), a collimated experiment with a nominal effective area of ~10 m 2 @ 8 keV, and a spectral resolution of ~240 eV in the energy band 2-30 keV. These performances are achieved covering a large collecting area with more than 2000 large-area Silicon Drift Detectors (SDDs) each one coupled to a collimator based on lead-glass micro-channel plates. In order to reduce the thermal load onto …
Neural cell pattern formation on glass and oxidized silicon surfaces modified with poly(N-isopropylacrylamide)
1996
Control over the adsorption of proteins and over the adsorption and spatial orientation of mammalian cells onto surfaces has been achieved by modification of glass and other silicon oxide substrates with poly(N-isopropylacrylamide) (PNIPAM). The functionalization of the substrates was achieved either by a polymer-analogous reaction of aminosilanes with reactive N-(isopropylacrylamide) (NIPAM)-copolymers and by copolymerization of NIPAM with surface-bound methacrylsilane. The obtained coatings were characterized by FT-1R, ellipsometry, and surface plasmon resonance measurements. The adsorption of two proteins-fibrinogen and ribonuclease A-on these surfaces was studied in situ by real time su…
Cathodoluminescence decay kinetics in Ge+, Si+, O+ implanted SiO2 layers
2003
Abstract Cathodoluminescence spectral shapes and respective band decay times show no similarity between luminescence centers in different crystal and amorphous modifications of SiO2 and GeO2. On the other hand, the additionally produced red luminescence centers (650 nm) by oxygen implantation into SiO2 layers are of the same nature as in stoichiometric SiO2 and are attributed to the non-bridging oxygen hole center (NBOHC). On the other hand, the elevated blue luminescence (460 nm) in Si implanted SiO2 belongs to the silicon related oxygen deficient center (SiODC) as in stoichiometric layers also. Ge implantation into SiO2 and thermal post-annealing leads to a huge violet luminescence (400 n…
Thermodynamics and Structure of Plate-Like Particle Dispersions
2012
A considerable amount of mineral particles are found to have a plate-like shape. The work in this thesis concerns theoretical investigations, using a Monte Carlo method, of the properties of such particles in aqueous solutions. The objectives were first to create a model that could capture the essential physics of clay suspensions and also to understand the role of thermodynamics in certain chemical processes. For all investigations, the results are related to experimental studies. The acid-base behavior of clays have been studied, using the primitive model, and an excellent agreement between simulated and experimental results was found. The formation of gel phases as a function of the char…