Search results for "ASTER"

Levy targeting and the principle of detailed balance

2011

We investigate confining mechanisms for Lévy flights under premises of the principle of detailed balance. In this case, the master equation of the jump-type process admits a transformation to the Lévy-Schrödinger semigroup dynamics akin to a mapping of the Fokker-Planck equation into the generalized diffusion equation. This sets a correspondence between above two stochastic dynamical systems, within which we address a (stochastic) targeting problem for an arbitrary stability index μ ε (0,2) of symmetric Lévy drivers. Namely, given a probability density function, specify the semigroup potential, and thence the jump-type dynamics for which this PDF is actually a long-time asymptotic (target) …

Bibliotecas abiertas. El programa de visitas de la Biblioteca Valenciana Nicolau Primitiu. Información bibliográfica y difusión bibliotecaria. Biblio…

2022

En un contexto de reducción de la financiación pública y de cambio de paradigma en el acceso a la información, la supervivencia de las bibliotecas está ligada a un mayor y mejor conocimiento de la ciudadanía de sus colecciones, productos y servicios. En este estudio se analiza el programa de visitas de la Biblioteca Valenciana Nicolau Primitiu, sus características, destinatarios y tipologías, así como los resultados alcanzados hasta ahora. In a context of reduced public funding and a paradigm shift in access to information, the survival of libraries is linked to greater and better knowledge by citizens of their collections, products, and services. This study analyzes the visits program of t…

Cycloaddition reactions. A new type of cycloadduct from a substituted 2-vinylthiophen and dmad

1987

Abstract Cycloaddition reactions between 2-(1-cyanoallyl)thiophen and the dienophiles diethyl azodicarboxylate, N-phenylmaleimide , methyl propiolate, and dimethyl acetylenedicarboxylate are reported. Products include simple benzo[b] thiophen carboxylates (13,19) and reduced derivatives (8,9,10,12,18), as a mixture of diastereoisomers, except in the adduct with diethyl azodicarboxylate. With dimethyl acetylenedicarboxylate a new type of tricyclic compound was also found (20).

Stereoselective 1,3-Dipolar Cycloadditions of a Chiral Nitrone Derived from Erythrulose. An Experimental and DFT Theoretical Study

2000

We have investigated several 1,3-dipolar cycloadditions of a chiral nitrone prepared from L-erythrulose. While cycloadditions to carbon-carbon multiple bonds of dipolarophiles such as ethyl acrylate, ethyl propiolate, or dimethyl acetylenedicarboxylate were poorly stereoselective, reaction with acrylonitrile provided predominantly one diastereomeric adduct. Furthermore, the regioselectivity exhibited by the two structurally similar dipolarophiles ethyl acrylate and ethyl propiolate was found to be opposite. The molecular mechanisms of these cycloadditions have thus been investigated by means of density functional theory (DFT) methods with the B3LYP functional and the 6-31G and 6-31+G basis …

Posługa Kościoła wobec młodzieży na przykładzie diecezji opolskiej

2019

Synod Biskupów dotyczący duszpasterstwa młodzieży, który odbył się w 2018 roku, zauważa, iż posługa pastoralna prowadzona wśród ludzi młodych powinna odbywać się przede wszystkim na poziomie parafii w ramach duszpasterstwa zwyczajnego. Jednak działalność zbawcza Kościoła wśród młodzieży wymaga także obecności elementów duszpasterstwa nadzwyczajnego, co ma dokonywać się poprzez odpowiednie przygotowanie samego duszpasterza i pomagających mu animatorów. Takie działanie może przyczynić się do efektywności prowadzonych działań pastoralnych. Niewątpliwie konieczne wydają się również: wizja, strategia prowadzenia duszpasterstwa na szczeblu diecezji, dekanatu i parafii, a także znajomość kondycji …

La diplopia : studio epidemiologico nel quinquennio 2009-2013

2014

Durable Rural Development Through the 2014 - 2020 National Rural Development Program

2018

Abstract Rural Development Policy is a priority for the E.U., as half of the Union’s population lives in rural areas. This policy is focused on society’s durable development, under all its aspects: economic, social, cultural, and so on. The challenges which rural areas of member states face must be addressed, while at the same time applying European norms and standards for rural development. After Romania became a part of the E.U., rural areas here were supported through several national rural development programs, so as to create a durable and sustainable rural economy. Major changes are required to achieve this kind of development, such as replacing old agricultural structures, modernizin…

Path-wise versus kinetic modeling for equilibrating non-Langevin jump-type processes

2014

We discuss two independent methods of solution of a master equation whose biased jump transition rates account for long jumps of L\'{e}vy-stable type and nonetheless admit a Boltzmannian (thermal) equilibrium to arise in the large time asymptotics of a probability density function $\rho (x,t)$. Our main goal is to demonstrate a compatibility of a {\it direct} solution method (an explicit, albeit numerically assisted, integration of the master equation) with an {\it indirect} path-wise procedure, recently proposed in [Physica {\bf A 392}, 3485, (2013)] as a valid tool for a dynamical analysis of non-Langevin jump-type processes. The path-wise method heavily relies on an accumulation of large…

Decision Support for Disaster Risk Management: Integrating Vulnerabilities into Early-Warning Systems

2014

International audience; Despite the potential of new technologies and the improvements of early-warning systems since the 2004 Tsunami, damage and harm caused by disasters do not stop to increase. There is a clear need for better integrating the fragmented landscape of researchers and practitioners working on different aspects of decision support for disaster risk reduction and response. To demonstrate and discuss the advantages of integrated systems, we will focus in this paper on vulnerabilities and early-warning systems. While vulnerabilities are mostly used to allocate risk management resources (preparedness), early-warning systems are designed to initiate the response phase. Indicator …

Universal Design of Information Sharing Tools for Disaster Risk Reduction

2019

International audience; Disaster information sharing tools are an important aspect of disaster resilience, and it is of utmost importance that these tools are accessible and usable for as many potential users as possible. In this paper, we evaluate the accessibility of a selection of tools for crowdsourcing disaster situation information. As our evaluation shows that the selected tools are not fully accessible, we provide recommendations for mitigation, as well as highlight the importance of further research in this area.