Search results for "Key"
showing 10 items of 1962 documents
Area-efficient FPGA-based FFT processor
2003
A novel architecture for computing the fast Fourier transform on programmable devices is presented. Main results indicate that the use of one CORDIC operator to perform the multiplication by all the ‘twiddle factors’ sequentially leads to an area saving up to 35% with respect to other cores.
IS PUTTING USERS FIRST AN ORGANISATIONAL KEY TO SUCCESS IN CROSS-PROFESSIONAL COOPERATION? An interview study about cooperation between service units…
2019
Cooperation among professionals in health, social and educational sectors is much needed to let the patient/client/pupil experience an entirety of services provided. However, cooperation is not easy in general. It seems even more challenging when it comes to service provisions to people affected by dual diagnoses. Our research question is influenced by this challenge and reads: What promotes cross-units’ cooperation between professionals involved in service provisions for people affected by both intellectual disability and mental illness? The knowledge is constructed by means of interviewing municipality-employed professionals (N = 21) about their experiences with successful cases. The stud…
Collaborative business planning in initial vocational education and training
2015
There is a growing demand to enhance entrepreneurship. This study aims at producing knowledge that can assist teachers in designing and supporting collaborative learning of entrepreneurship in vocational education. A qualitative case study approach was adopted. The outcome of this study provides a better understanding of the factors that hinder and enable collaboration, as related to entrepreneurship education in initial vocational education and training. In practice, nine dimensions of descriptive factors that hindered the exercise and nine distinct descriptive factors that acted as enablers were identified. This study suggests that, although the script of the learning task creates the set…
Opening the gates or coping with the flow? Governing access to higher education in Northern and Central Europe
2014
Published version of an article in the journal: Higher Education. Also available from the publisher at: http://dx.doi.org/10.1007/s10734-014-9830-1 Access to higher education has become a key policy issue in most European countries in since the last half of the last century. We trace the historical development of the ways in which governments in two countries within the region, Norway and Poland, have attempted to steer developments. Three access waves or phases are identified and contextualized, by illuminating dominant policy logics and tensions. Our analysis suggests that “coping with the flow” reflects a continuous attempt to instrumentalize higher education and make it serve different …
Mars-105 study : Time-courses and relationships between coping, defense mechanisms, emotions and depression
2013
International audience; This study investigated the time-courses and the relationships between coping, defense mechanisms, emotions and depression considered as key factors in adaptation to ICE (Isolated and Confined Extreme) environments. During the space simulation, the Mars-105 experiment, positive emotion decreased significantly and significant positive correlations were found between mature defenses and both positive emotions and Task-Oriented Coping (TOC), as well as between Disengagement-Oriented Coping (DOC) and symptoms of depression. These findings show the impact of space simulation on affective states and the relations of defense to both coping and emotion, which underline the r…
Automated Synthesis of Application-layer Connectors from Automata-based Specifications
2019
Abstract Ubiquitous and Pervasive Computing, and the Internet of Things, promote dynamic interaction among heterogeneous systems. To achieve this vision, interoperability among heterogeneous systems represents a key enabler, and mediators are often built to solve protocol mismatches. Many approaches propose the synthesis of mediators. Unfortunately, a rigorous characterization of the concept of interoperability is still lacking, hence making hard to assess their applicability and soundness. In this paper, we provide a framework for the synthesis of mediators that allows us to: (i) characterize the conditions for the mediator existence and correctness; and (ii) establish the applicability bo…
A new Aphid genus and species (Hemiptera: Aphididae: Macrosiphini) living on ferns in Costa Rica and Mexico
2013
AbstractAphid species colonising ferns belong to the subfamily Aphidinae (Hemiptera: Aphididae) and the majority of these to the tribe Macrosiphini. A new genus in this tribe and its type species: Gibbomyzus pteridophytorumnew genus, new species, are established. Apterous and alate viviparous females are described from specimens collected on Blechnum buchtienii Rosenstock (Blechnaceae) in Costa Rica and on Pteridium aquilinum (Linnaeus) Kuhn (Dennstaedtiaceae) and an unidentified fern in Mexico. The taxonomic validity of the two new taxa is discussed based on morphological and molecular data. Morphologically, the new genus is compared with genera with swollen siphunculi recorded in the New …
New discoveries in New World Atissini as revealed in revision of Pelignellus Sturtevant & Wheeler (Diptera: Ephydridae)
2019
Pelignellus is resurrected from synonymy with Atissa and is revised. The genus and both included species—P. subnudus Sturtevant & Wheeler from the USA (California) and P. freidbergi n. sp. from Central America (Costa Rica, El Salvador, Panama)—are described with an emphasis on structures of the male terminalia, which are fully illustrated. The species are keyed and their distribution data are provided. For perspective and to facilitate recognition of genera and species, the tribe Atissini is diagnosed and a key to genera is provided.
Synthèse de ligands macrocycliques comportant des fragments aromatiques et leur application pour la détection des cations métalliques
2011
The PhD thesis deals with the synthesis of polyazaligands using Pd-catalyzed amination of aryl halides. The manuscript consists of two parts. In the first part the scope of the Pd-catalyzed amination reaction for the synthesis of polyazamacrocyclic ligands is studied. The Pd-catalyzed amination of 2,7-dibromonaphthalene, 3,3’-dibromobiphenyl and 6,6’-dibromo-2,2’-bipyridyl with linear polyamines and oxadiamines is thoroughly investigated, and corresponding nitrogen- and oxygen-containing macrocycles is synthesized in yields up to 45%. The dependence of the formation of macrocycles and cyclic oligomers on the nature of the starting compounds is established. Two alternative approaches to cycl…
Simulation and laboratory experimental tests of a line to shield medium voltage power line communication system
2011
A complete model of a power-line communication (PLC) system on a medium-voltage (MV) network in the case of a line-shield configuration is presented in this paper. An MV cable model in a line-shield configuration is considered together with the power transformers, the signal coupling networks, and the receiving and transmitting line coupling interface of a ST7540 FSK power-line transceiver. Simulations of the complete model of the system under consideration have been carried out for different line lengths, with and without power transformers and derivation branches. The model is validated by experimental tests performed in the laboratory. The measured results confirm the reliability of the …