816 research outputs found

    A comparative approach to technology adoption: Explaining inter-technology variation in behavioral intention to adopt

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    This article takes a fresh approach to technology adoption, using a detailed comparison between adoption decision-making on a variety of eID technologies to illuminate the theoretical question of how technology’s characteristics influence the antecedent factors of behavioural intention to use. Selecting four characteristics whose relevance is suggested but not really tested by the existing literature, namely the hedonic or utilitarian ways the technology is used, the familiarity of the technology for the user, the level of state intervention in the implementation or regulation of the technology use and the potential privacy intrusion the technology represents, we investigate whether diversity in these characteristics accounts for variation in the technology-adoption model. The model developed and used in this research is an integration of selected elements from TAM and DOI which enables a precise analysis of the technology adoption process. Using hypothesized scenarios in a survey among 3,947 people from 4 EU27 countries, this study provides empirical evidence –through SEM-PLS analysis- of individual decision-making processes, demonstrating that the variables measured in TAM-based models should be taken into account along with the characteristics of the individual technology considered

    Habitat utilization and feeding ecology of small round goby in a shallow brackish lagoon

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    We examined small-scale distribution and feeding ecology of a non-native fish species, round goby (Neogobius melanostomus (Pallas, 1814)), in different habitats of a coastal lagoon situated in the south-western Baltic Sea. First observations of round goby in this lagoon were reported in 2011, 3 years before the current study was conducted, and information on this species’ basic ecology in different habitats is limited. We found that mainly juvenile round gobies are non-randomly distributed between habitats and that abundances potentially correlate positively with vegetation density and thus structural complexity of the environment. Abundances were highest in shallower, more densely vegetated habitats indicating that these areas might act as a refuge for small round gobies by possibly offering decreased predation risk and better feeding resources. Round goby diet composition was distinct for several length classes suggesting an ontogenetic diet shift concerning crustacean prey taxa between small (≤ 50 mm total length, feeding mainly on zooplankton) and medium individuals (51–100 mm, feeding mainly on benthic crustaceans) and another diet shift of increasing molluscivory with increasing body size across all length classes. Differences in round goby diet between habitats within the smallest length class might potentially be related to prey availability in the environment, which would point to an opportunistic feeding strategy. Here, we offer new insights into the basic ecology of round goby in littoral habitats, providing a better understanding of the ecological role of this invasive species in its non-native range, which might help to assess potential consequences for native fauna and ecosystems

    Self-consistent study of Anderson localization in the Anderson-Hubbard model in two and three dimensions

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    We consider the change in electron localization due to the presence of electron-electron repulsion in the \HA model. Taking into account local Mott-Hubbard physics and static screening of the disorder potential, the system is mapped onto an effective single-particle Anderson model, which is studied within the self-consistent theory of electron localization. We find rich nonmonotonic behavior of the localization length ξ\xi in two-dimensional systems, including an interaction-induced exponential enhancement of ξ\xi for small and intermediate disorders although ξ\xi remains finite. In three dimensions we identify for half filling a Mott-Hubbard-assisted Anderson localized phase existing between the metallic and the Mott-Hubbard-gapped phases. For small UU there is re-entrant behavior from the Anderson localized phase to the metallic phase.Comment: 7 pages, 4 figures, accepted for publication in Phys. Rev. B, journal versio

    Family management and firm performance in family SMEs: the mediating roles of management control systems and technological innovation

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    The aim of this research is to analyze the mediating role of the use of management control systems (MCS) and the achievement of technological innovation (TI) in the relationship between family management and firm performance in family small and medium-sized enterprises (SMEs). A questionnaire was conducted by 617 managers of family SMEs in Spain, and our model was tested using partial least squares. Our findings show that both MCS and TI play crucial mediating roles in the understanding of the relationship between family management and firm performance. As a result, family-managed firms that utilize MCS and produce TI are much more likely to generate better performance. These results encourage family managers to use formal MCS because in that way they will contribute to obtaining better firm performance, directly and indirectly through TI. We focus on private family SMEs, because these specific firms contribute significantly to the economies worldwide. This paper contributes to resolve the controversy regarding the relationship between family management and firm performance introducing MCS and TI as mediating factors.Agência financiadora Ministry of Science and Innovation, Spain (MICINN) UID/SOC/04020/2013 Universidad de Malaga Universidad de Cartagenainfo:eu-repo/semantics/publishedVersio

    Small Disks and Semiclassical Resonances

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    We study the effect on quantum spectra of the existence of small circular disks in a billiard system. In the limit where the disk radii vanish there is no effect, however this limit is approached very slowly so that even very small radii have comparatively large effects. We include diffractive orbits which scatter off the small disks in the periodic orbit expansion. This situation is formally similar to edge diffraction except that the disk radii introduce a length scale in the problem such that for wave lengths smaller than the order of the disk radius we recover the usual semi-classical approximation; however, for wave lengths larger than the order of the disk radius there is a qualitatively different behaviour. We test the theory by successfully estimating the positions of scattering resonances in geometries consisting of three and four small disks.Comment: Final published version - some changes in the discussion and the labels on one figure are correcte

    Investigating the uses of corporate reputation and its effects on brand segmentation, brand differentiation and brand positioning: evidence from the Taiwanese pharmaceutical industry

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    This study advances current knowledge on building a brand strategy that includes corporate reputation. It employs three theories – value creation, strategic resources and corporate communication – to study the uses of corporate reputation and its effect on brand segmentation, brand differentiation and brand positioning. In the context of the Taiwanese pharmaceutical industry, a sequential mixed method approach is applied and data are analyzed using PLS SEM. Findings demonstrate the relative impacts of three uses of corporate reputation (value creation, strategic resources and corporate communication) on brand image strategy (brand segmentation, brand differentiation and brand positioning) and the implications are evaluated. This study discovers that the inclusion of medicine prices is necessary and that it negatively moderates the impact of the overall uses of corporate reputation on overall brand image strategy. This research contributes empirically as one of the few that tests reputation-and-branding-building models outside the USA and Europe
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