Search results for " coordination"
showing 10 items of 215 documents
A particular coordination structure of Indo-European flavour
2005
The article aims to account for the various, often unexpected positions of the conjunction in coordinated constructions of ancient Indo-European languages, among them Hittite, Ancient Greek, Latin and Vedic Sanskrit. The coordination possibilities of ancient Indo-European languages are derived from the binary branching hypotheses of Universal Grammar, with the result that not only seemingly idiosyncratic facts of a number of languages receive a principled explanation, but also a speculative hypothesis of Universal Grammar receives empirical support; ancient Indo-European languages realize possibilities that are derivable from the Munn-Kayne theory but have not been attested so far.
Essays on labour market institutions and macroeconomic dynamics
2019
Labour market reforms play an important role in the public debate and policy recommendations. This thesis aims to find evidence on how labour market institutions are related to economic dynamics and adjustment. The thesis contains an introductory chapter and three essays. The first essay uses data of OECD countries to study whether differences in labour market institutions explain the differences in business cycle dynamics across OECD countries. The second and third essays use theoretical models to study centralized wage-setting and wage-setting coordination. The results of the first essay suggest that labour market institution variables have explanatory power for the heterogeneity in the v…
Improving IEEE 802.11 Performance in Chain Topologies through Distributed Polling and Network Coding
2009
Wireless multi-hop networks often rely on the use of IEEE 802.11 technology. Despite of the robustness of the IEEE 802.11 Distributed Coordination Function (DCF) for working in various network scenarios, it has been proven that critical inefficiencies can arise in the case of multi-hop packet forwarding. In this paper, we propose a MAC scheme, based on the virtualization of the Point Coordination Function, optimized for working on chain topologies with bidirectional traffic flows. Our scheme is based on a token-like access mechanism coupled with network coding. The basic idea is the use of multiple Point Coordinators (PCs) along the node chain, which are elected by passing special token fra…
The Role of Chronic Physical Activity in Alleviating the Detrimental Relationship of Childhood Obesity on Brain and Cognition
2021
Shu-Shih Hsieh was supported by the Postdoctoral Research Abroad Program from the Ministry of Science and Technology in Taiwan (reference number: 109-2917-I-564-034). Francisco B. Ortega's research activity was supported by funds from Spanish Ministry of Economy and Competitiveness (Reference number: DEP2016-79512-R and DEP2017-91544-EXP) and the Andalusian Operational Programme supported with European Regional Development Funds (ERDF in English, FEDER in Spanish, project ref: B-CTS-355-UGR18).
Coordination chemistry on surfaces through vapor phase processing: smart molecular/graphene heterostructures based on spin-crossover complexes and 2D…
2023
Los compuestos de coordinación están últimamente focalizando la atención de los investigadores en el campo de la nanociencia. Particular interés están generando aquellos compuestos con propiedades magnéticas de cara a su integración a la nanoescala en ramas como la electrónica y/o la espintrónica moleculares. Sin embargo, para su uso real en dispositivos destinados a estas aplicaciones, su procesabilidad es un requisito indispensable. En el marco de esta necesidad, la presente tesis doctoral se ha destinado al estudio del procesado sobre superficies mediante técnicas de fase gas de dos tipos distintos de compuestos de coordinación. Por tanto, el trabajo se ha dividido en dos partes. La prim…
Reversible stimulus-responsive Cu(i) iodide pyridine coordination polymer
2015
We present a structurally flexible copper–iodide–pyridine-based coordination polymer showing drastic variations in its electrical conductivity driven by temperature and sorption of acetic acid molecules. The dramatic effect on the electrical conductivity enables the fabrication of a simple and robust device for gas detection. X-ray diffraction studies and DFT calculations allow the rationalisation of these observations.
Spin state switching in iron coordination compounds
2013
The article deals with coordination compounds of iron(II) that may exhibit thermally induced spin transition, known as spin crossover, depending on the nature of the coordinating ligand sphere. Spin transition in such compounds also occurs under pressure and irradiation with light. The spin states involved have different magnetic and optical properties suitable for their detection and characterization. Spin crossover compounds, though known for more than eight decades, have become most attractive in recent years and are extensively studied by chemists and physicists. The switching properties make such materials potential candidates for practical applications in thermal and pressure sensors …
Synthesis of a rod-based porous coordination polymer from a nucleotide as a sequential chiral inductor
2021
We report the two-step synthesis of a novel chiral rod-based porous coordination polymer (PCP). The chemical approach consists of the use of a previously prepared bis(ethylenediamine) copper monomer [Cu(en)]2(NO3)2 [where en = ethylenediamine] reacting with the cytidine 5′-monophosphate (CMP) nucleotide. The bis(ethylenediamine) copper compound—stabilized by axial coordination of nitrate counter-anions—reacts in the presence of sodium salt of CMP to yield right-handed copper(II) chains of P helicity with formula [Cu2(en)2(CMP)2]·5H2O (1). The axial coordination of the CMP2- ligands through the N3 and O2 sites (free nitrogen and carbonyl groups) of the cytosine nucleobase and oxygen atoms of…
The Hold-Up Problem in Agricultural Contracts. A Study of Contractual Correlations Between Polish Groups of Agricultural Producers and First Recipien…
2018
Problem pułapki przed- i post-kontraktowej ma miejsce, gdy partnerzy cechują się oportunizmem, kontrakt jest niekompletny i występuje konieczność dokonania inwestycji zarówno o charakterze specyficznym, jak i ogólnego użytku. Na problem pułapki kontraktowej mogą być narażeni producenci rolni choćby ze względu na słabszą pozycję rynkową czy też niski poziom zintegrowania horyzontalnego. W artykule wyznaczono dwa cele. Pierwszy stanowi identyfikację umów rolnych, z których realizacją wiązało się dokonanie inwestycji w aktywa trwałe (problem pułapki post-kontraktowej). Drugim zaś jest rozpoznanie grup producentów rolnych, które według własnej opinii były w toku swej działalności narażone na wy…
Anticipatory postural adjustments during joint action coordination
2019
International audience; There is a current claim that humans are able to effortlessly detect others’ hidden mental state by simply observing their movements and transforming the visual input into motor knowledge to predict behaviour. Using a classical paradigm quantifying motor predictions, we tested the role of vision feedback during a reach and load-lifting task performed either alone or with the help of a partner. Wrist flexor and extensor muscle activities were recorded on the supporting hand. Early muscle changes preventing limb instabilities when participants performed the task by themselves revealed the contribution of the visual input in postural anticipation. When the partner perfo…