Search results for "ddc:"

Almost sure rates of mixing for i.i.d. unimodal maps

2002

International audience; It has been known since the pioneering work of Jakobson and subsequent work by Benedicks and Carleson and others that a positive measure set of quadratic maps admit an absolutely continuous invariant measure. Young and Keller-Nowicki proved exponential decay of its correlation functions. Benedicks and Young, and Baladi and Viana studied stability of the density and exponential rate of decay of the Markov chain associated to i.i.d. small perturbations. The almost sure statistical properties of the sample stationary measures of i.i.d. itineraries are more difficult to estimate than the "averaged statistics". Adapting to random systems, on the one hand partitions associ…

The Sustainability Factor: How Much Do Pension Expenditures Improve in Spain?

2020

The reform of 2013 represented a qualitative leap in the reform of the Spanish pension system. Unlike its predecessors, it introduced two automatic resetting mechanisms similar to those of other European countries. The first is the sustainability factor, scheduled to come into effect in 2019 but delayed until 2023, and its ultimate reversal cannot be ruled out. The objective of this study was to quantify the savings, or the lowest expenditure, that can be achieved in the Spanish public contributory pension system by applying it. These savings are measured in terms of cash&mdash

Liquidity Synchronization, Its Determinants and Outcomes under Economic Growth Volatility: Evidence from Emerging Asian Economies

2021

This study investigates the country-level determinants of liquidity synchronization and degrees of liquidity synchronization during economic growth volatility. As a non-diversifiable risk factor, liquidity co-movement shock spreads market-wide and thus disrupts the overall functioning of the financial market. Firms in Asian markets operate in legal and regulatory environments distinct from those of firms analyzed in the previous literature. Comprehensive analyses of liquidity synchronicity in emerging markets are limited. A major knowledge gap pertaining to Asian emerging markets serves as the primary motivation for this study. Seven Asian emerging economies are selected from the MSCI emerg…

The impact of the coronavirus crisis on European societies. What have we learnt and where do we go from here? – Introduction to the COVID volume

2021

The coronavirus pandemic, which first impacted European societies in early 2020, has created a twofold crisis by combining a health threat with economic turmoil. While the crisis has affected all European societies very significantly, its impact varies across countries, social groups, and societal domains. In an effort to provide a first overview of the effect of the coronavirus crisis, in this editorial we discuss contributions of 58 papers published as part of this special issue. These early research papers illustrate the varied impact of the pandemic on various areas of social life. The first group of studies in this special issue analyzes the effect of the pandemic on social inequalitie…

Mechanical ventilation and Streptococcus pneumoniae pneumonia alter mitochondrial homeostasis.

2018

Abstract Required mechanical ventilation (MV) may contribute to bacterial dissemination in patients with Streptococcus pneumoniae pneumonia. Significant variations in plasma mitochondrial DNA (mtDNA) have been reported in sepsis according to the outcome. The impact of lung stretch during MV was addressed in a model of pneumonia. Healthy or S. pneumoniae infected rabbits were submitted to MV or kept spontaneously breathing (SB). Bacterial burden, cytokines release, mitochondrial DNA levels, integrity and transcription were assessed along with 48-hour mortality. Compared with infected SB rabbits, MV rabbits developed more severe pneumonia with greater concentrations of bacteria in the lungs, …

How far do tadpoles travel in the rainforest? : Parent-assisted dispersal in poison frogs

2019

Parents can influence offspring dispersal through breeding site selection, competition, or by directly moving their offspring during parental care. Many animals move their young, but the potential role of this behavior in dispersal has rarely been investigated. Neotropical poison frogs (Dendrobatidae) are well known for shuttling their tadpoles from land to water, but the associated movements have rarely been quantified and the potential function of tadpole transport in dispersal has not been addressed. We used miniature radio-transmitters to track the movements of two poison frog species during tadpole transport, and surveyed pool availability in the study area. We found that parental male…

Research Data in Chemistry : Results of the first NFDI4Chem Community Survey

2020

Zeitschrift für anorganische und allgemeine Chemie : ZAAC 646(21), 1748-1757 (2020). doi:10.1002/zaac.202000339

Cooperativity in the Iron(II) Spin-Crossover Compound [Fe(ptz)6](PF6)2 under the Influence of External Pressure (ptz = 1-n-Propyltetrazole)

1997

The iron(II) spin-crossover compound [Fe(ptz)(6)](PF(6))(2) (ptz = 1-propyltetrazole) crystallizes in the triclinic space group Ponemacr;, with a = 10.6439(4) Å, b = 10.8685(4) Å, c = 11.7014(4) Å, alpha = 75.644(1) degrees, beta = 71.671(1) degrees, gamma = 60.815(1) degrees, and Z = 1. In [Fe(ptz)(6)](PF(6))(2), the thermal spin transition is extremely steep because of cooperative effects of elastic origin. The transition temperature at ambient pressure is 74(1) K. An external pressure of 1 kbar shifts the transition temperature to 102(1) K, corresponding to a stabilization of the low-spin state, which is smaller in volume. The volume difference between the high-spin and the low-spin stat…

On the G‐Quadruplex Binding of a New Class of Nickel(II), Copper(II), and Zinc(II) Salphen‐Like Complexes

2021

Revision of the Eurasian species of Aegilips Haliday, 1835 (Hymenoptera: Figitidae: Anacharitinae)

2022

The knowledge of Aegilips in Eurasia is updated. One new species is described: Aegilips insularis Mata-Casanova and Pujade-Villar sp. nov., from Portugal (Madeira). The genus is also cited for the first time in the Indomalayan region with specimens of A. atricornis found in Northern India and Pakistan. Aegilips curvipes Giraud, 1860, Aegilips gemellus Belizin, 1961, Aegilips laevis (Hedicke, 1914), Aegilips montanus Belizin, 1951 and Aegilips punctatus Belizin, 1951 are synonymized with A. nitidulus (Dalman, 1823). Aegilips vena Fergusson, 1985 is synonymized with Aegilips zaitzevi Kovalev, 1974. Aegilips notatus Belizin, 1951, and Aegilips punctulatus Hedicke, 1928 are designated as incert…