Search results for "Semi"
showing 10 items of 3894 documents
Reliable numerical solution of a class of nonlinear elliptic problems generated by the Poisson-Boltzmann equation
2020
We consider a class of nonlinear elliptic problems associated with models in biophysics, which are described by the Poisson-Boltzmann equation (PBE). We prove mathematical correctness of the problem, study a suitable class of approximations, and deduce guaranteed and fully computable bounds of approximation errors. The latter goal is achieved by means of the approach suggested in [S. Repin, A posteriori error estimation for variational problems with uniformly convex functionals. Math. Comp., 69:481-500, 2000] for convex variational problems. Moreover, we establish the error identity, which defines the error measure natural for the considered class of problems and show that it yields computa…
Time-dependent screening explains the ultrafast excitonic signal rise in 2D semiconductors
2020
We calculate the time evolution of the transient reflection signal in an MoS$_2$ monolayer on a SiO$_2$/Si substrate using first-principles out-of-equilibrium real-time methods. Our simulations provide a simple and intuitive physical picture for the delayed, yet ultrafast, evolution of the signal whose rise time depends on the excess energy of the pump laser: at laser energies above the A- and B-exciton, the pump pulse excites electrons and holes far away from the K valleys in the first Brillouin zone. Electron-phonon and hole-phonon scattering lead to a gradual relaxation of the carriers towards small $\textit{Active Excitonic Regions}$ around K, enhancing the dielectric screening. The acc…
Tutti insieme appassionatamente. In settimana bianca al family hotel
2020
Family hotels are accommodation facilities designed for families with children. They present super-safe playrooms and entertainment services, swimming pools, restaurants and wellness centers. They promote themselves as idyllic places for adults and children. They promise freedom and happyness for all members of the family. We will analyse the organisation of spaces and times of this structures pointing out the strictly codified discplinary sistemt that stands behind this perfect organisation.
Going in Homer: The Role of Verb-Inherent Actionality Within Self-Propelled Motion-Event Encoding
2019
The paper aims at investigating the encoding of self-propelled motion events in Homeric Greek in the light of the typology of motion events, taking into account the case of to go. The verbal class of the self-propelled motion refers to those verbs expressing the idea of a simple translational motion, such as to go, to move, without any information about the manner of motion (see, by contrast, the class of the manner-of-motion verbs, such as to run, to swim) or about the path of motion (see, by contrast, the class of the path verbs, such as to enter, to exit). According to Talmy (2000), world languages can be distinguished depending on whether they prototypically express the semantic compone…
Young generation and accessibility to health dissemination: TikTok as a case study.
2022
Social media interactions represent an accessible way for young people to get health information and provide a form of public discourse about health. It is against this backdrop that experts and other health professionals have turned to digital platforms (e.g., TikTok) to share educational content about timely or touchy topics, and to spread awareness, specifically among younger users. This paper aims to explore these digital platforms where professionals provide health information that is specifically tailored for a young audience and attempts to explore the discursive negotiation of healthcare and health accessibility in digital social settings. In light of a social media critical discour…
Perceiving Many Things Simultaneously : Medieval Reception of an Aristotelian Problem
2022
Semiconductor-photocatalyzed sulfoxidation of alkanes.
2008
Alueellisten TV-uutislähetysten heijastama käsitys Keski-Suomen alueellisesta identiteetistä
2001
Il paesaggio agrario della biodiversità/Agricultural landscape of biodiversity
2009
Per una storia della semiotica: teorie e metodi (Quaderni del Circolo Semiologico Siciliano, 11),
1981
Volume degli atti dell’VIII Convegno internazionale dell’Associazione italiana di studi semiotici tenuta a Palermo nel 1980.