Search results for "generations"
showing 10 items of 54 documents
FISCAL POLICY, MACROECONOMIC STABILITY AND FINITE HORIZONS
2003
In this paper we analyse the stabilisation properties of distortionary taxes in a New Keynesian model with overlapping generations of finitely-lived consumers. In this framework, government debt is part of net wealth and this adds a number of interesting channels through which fiscal policy could affect output and inflation. Output volatility, in presence of technology shocks, is not substantially affected by the operation of automatic stabilisers but we find interesting composition effects. While the presence of finitely-lived households strengthens the stabilisation performance of distortionary taxes through the reduction of the volatility of consumption, it does so at the cost of more vo…
Giant axonal neuropathy and leukodystrophy
1991
Abstract An 11-year-old Persian boy, born to consanguineous parents, manifested a progressive gait abnormality beginning at 5 years of age. A severe cerebellar disorder developed with associated dysfunction of the peripheral nervous system, but no sign of mental impairment. The sensory and motor nerve conduction velocities were greatly reduced, especially in the lower extremities. Cerebrospinal fluid protein was normal. Computed tomography and magnetic resonance imaging revealed leukoencephalopathy, especially in the cerebellum, but also in periventricular areas. The diagnosis of giant axonal neuropathy was established by biopsy of the sural nerve. The few previous histologic examinations h…
SIL1 mutations and clinical spectrum in patients with Marinesco-Sjogren syndrome.
2013
Marinesco-Sjogren syndrome is a rare autosomal recessive multisystem disorder featuring cerebellar ataxia, early-onset cataracts, chronic myopathy, variable intellectual disability and delayed motor development. More recently, mutations in the SIL1 gene, which encodes an endoplasmic reticulum resident co-chaperone, were identified as the main cause of Marinesco-Sjogren syndrome. Here we describe the results of SIL1 mutation analysis in 62 patients presenting with early-onset ataxia, cataracts and myopathy or combinations of at least two of these. We obtained a mutation detection rate of 60% (15/25) among patients with the characteristic Marinesco-Sjogren syndrome triad (ataxia, cataracts, m…
El litigio climático ante la responsabilidad intergeneracional
2021
El carácter intergeneracional del litigio climático plantea un interés sobre la protección jurídica de las generaciones futuras. La preocupación intergeneracional no es novedosa en el Derecho, sin embargo, debido al ascendiente número de litigios climáticos presentados por jóvenes en nombre propio y en el de las generaciones futuras para demandar mayor ambición climática han incorporado nuevas formas de observar este fenómeno. En esta contribución se lleva a cabo un estudio sobre sus implicaciones, la relevancia que puede tener el reconocimiento en normas internacionales e internas de los vínculos intergeneracionales, y cómo, a través del litigio climático, es posible vislumbrar nuevas form…
Cooperation and cultural transmission in a coordination game
2009
Abstract The aim of this paper is to analyze if cooperation can be the product of cultural evolution in a two-stage coordination game, consisting of a production stage followed by a negotiation phase. We present an overlapping generations model with cultural transmission of preferences where the distribution of preferences in the population and the strategies are determined endogenously and simultaneously. There are several groups in the society; some of them play cooperatively and others do not. Socialization takes place inside the group, but there is a positive rate of migration among groups which parents anticipate. Our main result shows that all groups converge to the cooperative equili…
Synchronicity matters: defining the characteristics of digital generations
2015
This paper investigates whether or not the proposition that the second digital generation (or so-called digital natives) is more engaged in social use of the Internet than older generations is tenable. By analysing nationally representative questionnaire-based survey data collected from Finland in 2011 (N = 612), the study shows that rather than social use of the Internet in general, it is the synchronicity of online communication that distinguishes user generations. Results show that, in contrast to asynchronous modes of online communication (e.g. social networking sites, blogs and online discussion forums), synchronous modes (e.g. instant messaging and Internet calls) are clearly generati…
A "Swedish" actuarial balance sheet for a notional defined contribution pension scheme with disability and retirement benefits
2016
This paper proposes a “Swedish” type actuarial balance sheet for a notional defined contribution scheme embedding disability insurance within the retirement pension system. The underlying framework supporting the actuarial balance relies on a multistate overlapping generations model that includes the so-called survivor dividend and a minimum pension benefit for both contingencies. The proposed ABS splits the system into two parts: the actuarial part (pure NDC) and the redistributive part, which includes the assets and liabilities originating from non-contributory rights. The paper also contains a numerical example that sheds light on the real applicability of our proposal and confirms that …
Control of Electron Motion in a Molecular Ion: Dynamical Creation of a Permanent Electric Dipole
2007
The dynamics of a diatomic one-dimensional homonuclear molecule driven by a two-laser field is investigated beyond the usual fixed nuclei approximation. The dynamics of the nuclei is treated by means of Newton equations of motion; the full quantum description is used for the single active electron. The first laser pulse (pump) excites vibrations of the nuclei, while the second very short pulse (probe) has the role of confining the electron around one of the nuclei. We show how to use the radiation scattered in these conditions by the molecule to achieve real-time control of the molecular dynamics.
Dynamics of H2 molecule driven by an ultra-short laser field
2004
We describe, using a semiclassical approach, the molecular dynamics of a one-dimensional H2 molecule interacting with a laser, beyond the Born–Oppenheimer approximation. We observe and discuss different molecular behaviors, such as ionization and dissociation.
A multigenerational approach can detect early Cd pollution in Chironomus riparius.
2020
Abstract Cadmium (Cd) is a non-essential highly toxic metal and its presence in the environment has been a concern over the years. On the present study we adopt the spiked water exposure scenario to study early Cd contamination across five generations of the model organism Chironomus riparius. Animals were, at the beginning of each generation, submitted to 0, 1, 3.2, 10, 32 and 100 μg/L of Cd. Classical endpoints like total emergence, EmT50, fertility and the integrative fitness measure, population growth rate (PGR), were calculated at each generation. Results could demonstrate that exposure to brief and low Cd concentrations can affect all the measured endpoints and, therefore, initial Cd …