Search results for "Arity"
showing 10 items of 2893 documents
Studies of host-guest thin films of corona-poled betaine-type polar molecules by kelvin probe technique and atomic force microscopy
2004
In this work betaine-type molecules were investigated. As a result of the asymmetry of charge distribution, molecules possess in the ground state a considerable permanent dipole moment. The decay of surface potential of poled polymer films is dependent at least on two relaxation processes. The influence of glass transition of PMMA on thermal dependence of the surface potential is shown. The transition temperature, where no changes of the surface potential appeared, is related to glass transition temperature of the host-guest system. The topography of the film surface was obtained by AFM.
Studies on proton acceptor ability of SOx-containing compounds
1995
Abstract IR spectra, dipole moments and molar Kerr constants of complexes of phenols with compounds containing SO x groups were studied to establish the structure of the complexes and the parameters characterizing the proton acceptor capability of these compounds. ( μ H , Δ ( mK ), log K and δ 0 ). It has been suggested that the new parameter Δ ( mK ) — the structural additive difference of the molar Kerr constant — makes it possible to determine changes of polarity and polarizability of the systems during complex formation.
Studies on the proton acceptor ability of phosphoryl compounds
1996
Abstract Dipole moments and molar Kerr constants of complexes of phenols with phosphoryl compounds were studied to establish the structure of complexes and parameters characterizing the proton acceptor ability of these compounds. The structures of these complexes and parameters ( μ H , Δ ( mk ) S , log K and δ 0 ) were established. It has been suggested that a new parameter Δ ( mK ) S — structural additive difference of the molar Kerr constant — makes it possible to determine changes of polarity and polarizability of the systems during complex formation.
Ensikielen tunnistamisen merkityksestä suullisen kielitaidon arvioinnissa Yleisissä kielitutkinnoissa
2020
In this paper, we present a multidisciplinary study addressing fairness in the speaking test in a high-stakes language proficiency test in Finnish, National Certificates of Language Proficiency. The background of the research lies in studies on language assessment and (reversal) linguistic stereotyping and language attitudes. The focus L1 groups were Thai, Estonian, Finland Swedish, Arabic and Russian. Altogether 49 speech samples of test takers of these L1s were rated on a digital platform by 44 raters of the test system. The current paper reports on the sub-study that investigated whether the raters’ recognition of the test takers’ L1 affected their ratings and whether the effect differed…
Analysis of nonlinear coupling on the behavior of the sine-Gordon and Klein-Gordon models in bandwidth and forbidden bands
2017
In this thesis, we analyze the conditions of existence of the phenomenon of nonlinear supratransmission in two different models: a modified fifth-order Klein-Gordon system and a modified sine-Gordon system. The modified models considered here are those with mixed coupling, the pure linear coupling being associated with a nonlinear coupling. In particular, we quantify numerically the influence of the non-linear coupling coefficient on the threshold amplitude which triggers the phenomenon of non-linear supratransmission. Our main result shows that in both models, when the nonlinear coupling coefficient increases, the threshold amplitude triggering the phenomenon of nonlinear supratransmission…
Do we really know the predictors of competence-creating R&D subsidiaries? Uncovering the mediation of dual network embeddedness
2017
Abstract Many changes have been recorded in the R&D role played by the foreign subsidiaries of multinational corporations (MNCs), to the extent that today many are recognised as key players in the development of firm innovation-related competences. Given this trend, we examine the predictors of a subsidiary's R&D role as a competence-creating contributor to the MNC's long-term success. Traditionally, the predictors of subsidiaries' R&D roles have been sought in the specific features of the internal corporate and external host-country environments. However, we find that favourable corporate- and country-level conditions may not necessarily lead to the enhancement of a subsidiary's R&D role u…
Reviewing the views of ICT in development
2008
The role of information and communication technology (ICT) in national development is argued to depend on how ICT is viewed. Building on Orlikowski and lacono's classification of IT views we proposed in an earlier work that ICT can be conceptualized as: tool (means to achieve something), computational (the machine), ensemble (part of socio-economic context) and enabler (what ICT enables). We presented this as a hierarchy where the higher you go from the tool to the proxy view, the stronger ICT influences national development. In using our framework to evaluate ICT for development (ICT4D) projects, we realize that the notion of a hierarchy is untenable. Here, we argue that the relationship b…
The Model for Balancing Learning Workload
2015
Abstract It is advised and accepted that teachers carefully plan their lessons thus it is also crucial that there should be guidelines and recommendations on how students should plan their time to study and how much time is necessary to perform certain learning activities. This time management should be taken into account when planning students’ workload and for balancing it. During the research mental representations and approaches were reviewed and their role in the reasoning, as well as within the context of discerning the meaning and similarity. Examples are given for types of statistics and summaries that can help in evaluating the effectiveness and appropriateness of learning material…
Using Social Networks to Enhance Customer Relationship Management
2013
International audience; In recent years, the Web has evolved into an exchange platform. Customer Relationship Management (CRM) must follow this evolution and connect CRM tools to social networks in order to place companies in the center of all the exchanges. We propose, in this article, a community detection approach that identi fies clusters of customers of a company using their explicit and implicit behaviour. Our contribution is the definition of a composite pro le that integrates various informations gathered from di erent applications, such as the information system of the company, the existing CRM, or Twitter. We de ne a similarity measure, between a user and a tag, that takes into ac…
Managerial practices driving knowledge creation, learning and transfer in translational research: an exploratory case study
2014
Despite its growing popularity in the biomedical literature, the particular phenomenon of translational research management has not been addressed from an organizational and strategic perspective yet. Our study aims to fill this gap by identifying a set of managerial practices that could influence how knowledge is created, amplified and transferred from biomedical research both to clinical practice and the productive sector. As a result of the theoretical review, we have proposed a preliminary model to guide our empirical work. We have developed an exploratory case study to gather organisational information from an outstanding translational research center. The results obtained from the ana…