1,558 research outputs found

    Labor Market Effects of Trade and FDI: Recent Advances and Research Gaps

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    This paper pursues three aims. First, we provide a review of current theoretical advances which pertain to the relationship between trade, FDI and labor markets. We do so under the following (not mutually exclusive) headings: (1) slicing-up the value added chain and the turn to a task-based approach, (2) firm heterogeneity and labor markets, (3) complex offshoring (integration) and sourcing strategies and (4) location of firms and labor markets. Second, we overview existing empirical work covering the labor market effects of trade and FDI. Finally, we identify and summarize the existing research gaps and thereby we highlight promising avenues for future research.offshoring, outsourcing, FDI, trade, labor markets, agglomeration

    Effects of haloperidol and atypical neuroleptics on psychomotor performance and driving ability in schizophrenic patients - Results from an experimental study

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    The influence of antipsychotic treatment on the neuropsychological and psychomotor performance of schizophrenic patients is still a subject of investigation. The present study was designed to evaluate the effects of atypical neuroleptics in comparison with a conventional dopamine antagonist neuroleptic (haloperidol) on several dimensions of psychomotor performance (visual perception, attention, reaction time, and sensorimotor performance) considered to be of relevance in evaluating driving fitness. Psychomotor performance was assessed by means of the ART 90, a computerized Act and React Test which is generally used in diagnosis of psychomotor performance. The 49 participating patients were examined at discharge following psychopathological stabilisation; 20 received haloperidol, 29 received an atypical neuroleptic. Our findings demonstrate a remarkably reduced psychomotor performance in the haloperidol-treated group of schizophrenic patients compared with patients treated with atypical neuroleptics. Only 1 (5%) subject passed all subtests without major failures and could be regarded as competent to drive. Among patients with atypical neuroleptics, 7 patients (24%) passed all test parameters without major failures. Copyright (C) 2003 S. Karger AG, Basel

    On square positive extensions and cubature formulas

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    AbstractWe consider linear functionals Ld defined over Pd⊂P≔R[x1,
,xn] and study how to extend Ld to a square positive L:P→R, i.e. to a linear functional L with L(p2)â©Ÿ0 for all p∈P. We use the connection of square positive functionals to real ideals, to orthogonal polynomials, and to moment matrices. Finally, we report how such extension techniques are used to construct and analyse cubature formulas

    Rigid body dynamics with a scalable body, quaternions and perfect constraints

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    In this paper, we present a formulation of the quaternion constraint for rigid body rotations in the form of a standard perfect bilateral mechanical constraint, for which the associated Lagrangian multiplier has the meaning of a constraint force. First, the equations of motion of a scalable body are derived. A scalable body has three translational, three rotational, and one uniform scaling degree of freedom. As generalized coordinates, an unconstrained quaternion and a displacement vector are used. To the scalable body, a perfect bilateral constraint is added, restricting the quaternion to unit length and making the body rigid. This way a quaternion based differential algebraic equation (DAE) formulation for the dynamics of a rigid body is obtained, where the7×7 mass matrix is regular and the unit length restriction of the quaternion is enforced by a mechanical constraint. Finally, the equations of motion in the form of a DAE are linked to the Newton-Euler equations of motion of a rigid body. The rigid body DAE formulation is useful for the construction of (energy) consistent integrator

    Non-smooth modelling of electrical systems using the flux approach

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    The non-smooth modelling of electrical systems, which allows for idealised switching components, is described using the flux approach. The formulations and assumptions used for non-smooth mechanical systems are adopted for electrical systems using the position-flux analogy. For the most important non-smooth electrical elements, like diodes and switches, set-valued branch relations are formulated and related to analogous mechanical elements. With the set-valued branch relations, the dynamics of electrical circuits are described as measure differential inclusions. For the numerical solution, the measure differential inclusions are formulated as a measure complementarity system and discretised with a difference scheme, known in mechanics as time-stepping. For every time-step a linear complementarity problem is obtained. Using the example of the DC-DC buck converter, the formulation of the measure differential inclusions, state reduction and their numerical solution using the time-stepping method is shown for the flux approac
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