177 research outputs found

    Group Work and Cognitive Style: A Discursive Investigation

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    This article investigates the relationship between work-group members’ cognitive style (as measured by Allinson and Hayes’s Cognitive Style Index), the group’s task and setting, and the way in which group members behave in the group. Behavior of a homogeneous analytic, a homogeneous intuitive, and a heterogeneous group was observed in a mechanistic setting and analyzed using discourse analysis. This study is discussed in light of a previous study in which homogeneous analytic and homogeneous intuitive groups worked in an organic setting. These two studies use different methodologies (quantitative approach versus qualitative discursive). The benefits of methodological eclecticism are discussed

    Accuracy of CT-guided transthoracic needle biopsy of lung lesions: Factors affecting diagnostic yield

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    Adjoint bi-continuous semigroups and semigroups on the space of measures

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    For a given bi-continuous semigroup T on a Banach space X we define its adjoint on an appropriate closed subspace X^o of the norm dual X'. Under some abstract conditions this adjoint semigroup is again bi-continuous with respect to the weak topology (X^o,X). An application is the following: For K a Polish space we consider operator semigroups on the space C(K) of bounded, continuous functions (endowed with the compact-open topology) and on the space M(K) of bounded Baire measures (endowed with the weak*-topology). We show that bi-continuous semigroups on M(K) are precisely those that are adjoints of a bi-continuous semigroups on C(K). We also prove that the class of bi-continuous semigroups on C(K) with respect to the compact-open topology coincides with the class of equicontinuous semigroups with respect to the strict topology. In general, if K is not Polish space this is not the case

    Irreducibility and Asymptotics of Stochastic Burgers Equation Driven by α-stable Processes

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    The irreducibility, moderate deviation principle and ψ\psi-uniformly exponential ergodicity with ψ(x):=1+∥x∥0\psi(x):=1+\|x\|_0 are proved for stochastic Burgers equation driven by the a˚\aa-stable processes for a˚∈(1,2),\aa\in (1,2), where the first two are new for the present model, and the last strengthens the exponential ergodicity under total variational norm derived in \cite{Do-Xu-Zh-14}
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