29,801 research outputs found
Microgenesis, Method and Object: A Study of Collaborative Activity in a Spanish as a Foreign Language Classroom
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Developing a taxonomy for the understanding of business and it alignment paradigms and tools
The alignment of information technology with business objectives tends to be a managerial priority in modern organisations. Thus, practitioners and researchers have proposed different approaches to assess this relationship, some following similar approaches whilst others proposing different ones. The variety of approaches proposed, however, has created confusion about the applicability and context in which these approaches can be used. Thus, aiming to tackle this challenge, this paper proposes a taxonomy that organises and compares studies of alignment assessment in terms of their theoretical constructors and their practical use. The taxonomy is build around two research sources: a) a review of the literature of alignment and b) a framework for comparing IS methodologies. The structure of the taxonomy permits insights into studies by means of six theoretical (objective, nature of strategy, paradigm, dimension, type of measurement, model) and six practical constructors (audience, scope, output, techniques, product, target). The taxonomy is then applied to six assessment studies. The benchmarking analysis of these helped to identify their theoretical basis and its practical use, and confirms the need for more practical mechanisms to assess alignment. Additionally, it becomes apparent that process perspectives and social understanding of alignment are the two main paradigms for alignment
Effect of facility variation on the acoustic characteristics of three single stream nozzles
The characteristics of the jet noise produced by three single stream nozzles were investigated statistically at the NASA-Lewis Research Center outdoor jet acoustic facility. The nozzles consisted of a 7.6 cm diameter convergent conical, a 10.2 cm diameter convergent conical and an 8-lobe daisy nozzle with 7.6 cm equivalent diameter flow area. The same nozzles were tested previously at cold flow conditions in other facilities such as the Royal Aircraft Establishment (RAE) 7.3 m acoustic wind tunnel. The acoustic experiments at NASA covered pressure ratios from 1.4 to 2.5 at total temperatures of 811 K and ambient. The data obtained with four different microphone arrays are compared. The results are also compared with data taken at the RAE facility and with a NASA prediction procedure
On closing for flows on 2-manifolds
For some full measure subset B of the set of iet's (i.e. interval exchange
transformations) the following is satisfied: Let X be a , , vector field, with finitely many singularities, on a compact
orientable surface M. Given a nontrivial recurrent point of X, the
holonomy map around p is semi-conjugate to an iet If
then there exists a vector field Y, arbitrarily close to X, in
the topology, such that Y has a closed trajectory passing through p.Comment: 7 pages, 1 figur
Hydrogen bonds and asymmetrical heat diffusion in a-Helices. A Computational Analysis
In this work, we report the heat rectifying capability of a-helices. Using
molecular dynamics simulations we show an increased thermal diffusivity in the
C-Terminal to N-Terminal direction of propagation. The origin of this effect
seems to be a function of the particular orientation of the hydrogen bonds
stabilizing these a-helices. Our results may be relevant for the design of
thermal rectification devices for materials science and lend support to the
role of normal length hydrogen bonds in the asymmetrical energy flow in
proteins
EU Law, International Law, and Economic Sanctions Against Terrorism: The Judiciary in Distress?
This Article seeks to examine the relationship between European Union (“EU”) law, international law, and the protection of fundamental rights in light of recent case law of the European Court of Justice (“ECJ”) and the Court of First Instance (“CFI”) relating to economic sanctions against individuals. It first looks at the judgment in Kadi. After a short presentation of the factual and legal background, it explores the question of whether the EU has competence to adopt smart sanctions. It then examines whether the EU is bound by resolutions of the UNSC, whether the ECJ has jurisdiction to review Community measures implementing such resolutions, and looks at the applicable standard of judicial scrutiny. It analyzes the contrasting views of the CFI, the Advocate General, and the ECJ, taking account also of the case law of the European Court of Human Rights (“ECtHR” or “Strasbourg Court”). Further, the Article explores the consequences of annulling the contested regulation. It then turns to discussing CFI case law in relation to sanctions lists drawn up not by the UNSC but by the Community. The Article concludes by welcoming the judgment of the ECJ. While its reasoning on the issue of Community competence is questionable, once such competence is established, it is difficult to support the abrogation of Community standards for the protection of fundamental rights. Such standards should ensure procedural due process while recognizing the importance of public security
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