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Search Results: 1 - 10 of 378525 matches for " T.J. Boschloo "
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H. de Beukelaer, Nijver in het groen. Twee eeuwen industri le ontwikkeling in Achterhoek en Liemers
T.J. Boschloo
BMGN : Low Countries Historical Review , 1992,
Abstract:
J.G.S.J. van Maareveen, Briefwisseling van Nicolaas Gerard Pierson 1839-1909, I, 1851-1884
T.J. Boschloo
BMGN : Low Countries Historical Review , 1993,
Abstract:
Symplectic integrators revisited
Stuchi, T.J.;
Brazilian Journal of Physics , 2002, DOI: 10.1590/S0103-97332002000500022
Abstract: this paper is a survey on symplectic integrator algorithms (sia): numerical integrators designed for hamiltonian systems. as it is well known, n degrees of freedom hamiltonian systems have an important property: their ows preserve not only the total volume of the phase space, which is only one of the poincaré invariants, but also the volume of sub-spaces less then 2n. these invariants are inherited from the conservation of the symplectic area. it is usually demanded of integrators that they should preserve energy. in this survey the main point is to convince the readers that the preservation of the symplectic area or canonicity of the hamiltonian ow can be equally important, mainly when the concern is not one particular trajectory but the behavior of the phase space as a whole for long intervals of time. the kam theorem asserts that for any integrable hamiltonian perturbed by a small hamiltonian term, such as that caused by the construction of the sia, the perturbed dynamics preserves most of the incommensurate, nondegenerate, invariant tori. unstable objects and their invariant manifolds are structurally stable and will be well represented by symplectic integrators.
A collection of Book Reviews for Volume 56, Issue 1
T.J. Kruger
Koers : Bulletin for Christian Scholarship , 1991, DOI: 10.4102/koers.v56i1.735
Abstract:
MINING TREE-BASED ASSOCIATION RULES FROM XML DOCUMENTS
Saranya T.J.
International Journal of Advanced Technology & Engineering Research , 2012,
Abstract: The increasing amount of XML datasets available to casual users increases the necessity of investigating techniques to extract knowledge from these data. Data mining is widely applied in the database research area in order to extract frequent correlations of values from both structured and semi-structured datasets. In this work we describe an approach to mine Tree-based association rules from XML documents. Such rules provide information on both the structure and the content of XML documents; moreover, they can be stored in XML format to be queried later on. The mined knowledge is approximate, intentional knowledge used to provide: (i) Quick, approximate answers to queries and (ii) Information about structural regularities that can be used as data guides for document querying. A prototype of the proposed system is also briefly described.
Elucidar la contribución de las proteínas en las lágrimas: Un reto para los investigadores Elucidate the contribution of proteins to tears: A challenge for researchers
T.J. Millar
Archivos de la Sociedad Espa?ola de Oftalmología , 2006,
Abstract:
Symplectic integrators revisited
Stuchi T.J.
Brazilian Journal of Physics , 2002,
Abstract: This paper is a survey on Symplectic Integrator Algorithms (SIA): numerical integrators designed for Hamiltonian systems. As it is well known, n degrees of freedom Hamiltonian systems have an important property: their ows preserve not only the total volume of the phase space, which is only one of the Poincaré invariants, but also the volume of sub-spaces less then 2n. These invariants are inherited from the conservation of the symplectic area. It is usually demanded of integrators that they should preserve energy. In this survey the main point is to convince the readers that the preservation of the symplectic area or canonicity of the Hamiltonian ow can be equally important, mainly when the concern is not one particular trajectory but the behavior of the phase space as a whole for long intervals of time. The KAM theorem asserts that for any integrable Hamiltonian perturbed by a small Hamiltonian term, such as that caused by the construction of the SIA, the perturbed dynamics preserves most of the incommensurate, nondegenerate, invariant tori. Unstable objects and their invariant manifolds are structurally stable and will be well represented by symplectic integrators.
I. Hasenberg Butter, Academic economics in Holland 1800-1870
T.J. Kastelein
BMGN : Low Countries Historical Review , 1971,
Abstract:
De beste staat. Een quaestio politica bij Huber en Spinoza
T.J. Veen
BMGN : Low Countries Historical Review , 1973,
Abstract:
Bisphosphonates in osteoporosis: Where do we stand in 2009?
T.J de Villiers
Journal of Endocrinology, Metabolism and Diabetes of South Africa , 2009,
Abstract: Bisphosphonates were discovered 40 years ago and remain the market leader in the field of osteoporosis. Bisphosphonates are classified as inhibitors of bone resorption and they act by inhibiting the mevalonate pathway to inhibit protein prenylation with resultant inhibition of osteoclastic activity. There are three ethical bisphosphonates as well as generic alendronate that have been approved for the treatment of osteoporosis in South Africa. These drugs offer a wide range of variations in dose, frequency of administration and method of administration. The wide choice in method of administration may lead to improved individual compliance to treatment protocols. There is strong evidence to support antifracture efficacy at vertebral and hip sites in patients treated for up to three years but long-term data as well as prospective data in osteopenic patients are lacking. Gastrointestinal side-effects are common, but can often be avoided by taking medication in the prescribed fashion. The acute phase response to intravenous administration can be prevented by co-administration of oral paracetamol or ibuprofen. Bisphosphonates can cause bone pain. The Food and Drug Administration (FDA) has accepted evidence that bisphosphonates do not cause atrial fibrillation. Osteonecrosis of the jaw is a rare complication of oral bisphosphonates as used in osteoporosis but may be associated with high dose intravenous treatment in cancer patients. Atypical low energy femur shaft fractures have been associated with long-term usage of the bisphosphonates. A large national observational register-based study reported that these fractures share the same epidemiology and treatment response as classical hip fractures and are best classified as osteoporotic fractures. The cost-effectiveness and treatment options of the bisphosphonates will ensure that they remain significant players in years to come.
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