489 research outputs found

    Dehumanization or Communication : A Design for a ‘Global Village’

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    Session III : Posthumanism‘Dehumanisation is the chief symptom of the Modern World’ (‘The New Egos’, p.141). This phrase is attributed to Wyndham Lewis (1882–1957), a leading figure of Vorticism, the British avant-garde art movement. It appeared in Blast No. 1, published in 1914. Lewis practiced geometric abstraction as pursued by the avant-garde groups of his contemporaries. Moreover, at the beginning of the 20th century, he predicted the advent of a new world in which complex sensory media and machines would dominate humanity. In a modern society where machines undertake labour, there is no need for human bodies; ‘machinery went straight to nature and eliminated the middleman, Man’ (Diabolical Principle, p.162). In Blast, mechanised humans were described as‘dehumanized’and visualised in insect-or robot-like forms. Lewis’s prediction about this future humanity—referred to as New Egos—being governed alongside animated machines by an elite hierarchy and ultimately merging seems like something out of a science fiction novel. However, this dystopia has partially been realised in the 21st century. Nevertheless, Lewis’s prescience has remained buried and unnoticed in the history of modern and contemporary art and design for a long time. This paper examines Lewis’s conception of new urban design from the 1910s to the 1950s regarding both his graphic and literary works and crystalises their emergent ideas. Examining specific examples will reveal that his ideas are linked to the negative aspects of contemporary digitally connected society, culminating in his own use of sarcasm and satire

    On Inheritance of Quadratic First Integral of Linear System via Runge-Kutta Methods

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    This paper deals with a condition for any quadratic homogeneous first integral of an arbitrary linear system with constant coefficients to be conserved by a discrete system obtained by applying Runge-Kutta methods

    Symplectic Runge-Kutta Methods from the Viewpoint of Symmetry

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    The Weinstein generating function is introduced in order to represent a symplectic mapping, and it is shown that the representation is closely related to a certain symplectic Runge-Kutta method. Furthermore, the symmetry property is characterized by means of the generating function, and in relation to the symmetry, several stabilities intrinsic to linearly symplectic Runge-Kutta methods are studied. 2000 Mathematics Subject Classification. Primary 65L06; Secondary 70H0

    A Topic of Quadratic First Integral of Linear Symplectic System

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    It is shown that every quadratic first integral of a linear symplectic system is expressed as a linear combination of quadratic forms constructed from generalized eigenvectors corresponding to four coupled eigenvalues

    Occurrence of thiamin pyrophosphate-dependent 2-oxoglutarate decarboxylase in mitochondria of Euglena gracilis

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    Abstract2-Oxoglutarate decarboxylase which catalyzes the conversion of 2-oxoglutarate into succinate semialdehyde occurs in mitochondria of Euglena gracilis which lacks a 2-oxoglutarate dehydrogenase complex. The enzyme reaction required thiamin pyrophosphate, MgCl2, 2-mercaptoethanol and NADP+ for the maximum activity, and was not affected by pyruvate and oxalacetate. In the reaction, the enzyme consumed 2-oxoglutarate, evolved CO2 and formed succinate semialdehyde in stoichiometric relationship. The maximum enzyme activity was found at pH 7.0 and 40° C, and Km values for 2-oxoglutarate and thiamin pyrophosphate were 0.33 and 0.056 mM, respectively. These results indicate that the thiamin pyrophosphate-dependent Euglena decarboxylase belongs to a new type of decarboxylase to be designated as 2-oxoglutarate decarboxylase. The probable role of the new decarboxylase in Euglena mitochondria is discussed with regard to the tricarboxylic acid cycle

    Heme oxygenase-1 induction in the brain during lipopolysaccharide-induced acute inflammation

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    Delirium occurs in 23% of sepsis patients, in which pro-inflammatory cytokines and nitric oxide are suggested to be involved. However, in animal experiments, even a subseptic dose of lipopolysaccharide (LPS) injection induces both pro-inflammatory cytokines and inducible nitric oxide synthase in the brain, suggesting that the brain oxidative reaction can be induced in the subseptic condition. Then, we evaluated the changes of heme oxygenase-1 (HO-1), a sensitive oxidative marker, as well as interleukin (IL)-1ÎČ, IL-6, and inductible nitric oxide synthase (iNOS) mRNA in the hypothalamus and hippocampus of rats using real-time PCR after peripheral injection of LPS (2.0 mg/kg). As a result, these four kinds of mRNAs were induced significantly in both areas after LPS injection. These results suggest that peripheral inflammation induces an oxidative reaction in the brain, even if the inflammation is not lethal. It is also considered that several pathways are involved in brain HO-1 induction

    Supernova Nucleosynthesis and Extremely Metal-Poor Stars

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    We investigate hydrodynamical and nucleosynthetic properties of the jet-induced explosion of a population III 40M⊙40M_\odot star and compare the abundance patterns of the yields with those of the metal-poor stars. We conclude that (1) the ejection of Fe-peak products and the fallback of unprocessed materials can account for the abundance patterns of the extremely metal-poor (EMP) stars and that (2) the jet-induced explosion with different energy deposition rates can explain the diversity of the abundance patterns of the metal-poor stars. Furthermore, the abundance distribution after the explosion and the angular dependence of the yield are shown for the models with high and low energy deposition rates E˙dep=120×1051ergss−1\dot{E}_{\rm dep}=120\times10^{51} {\rm ergs s^{-1}} and 1.5×1051ergss−11.5\times10^{51} {\rm ergs s^{-1}}. We also find that the peculiar abundance pattern of a Si-deficient metal-poor star HE 1424--0241 can be reproduced by the angle-delimited yield for ξ=30∘−35∘\theta=30^\circ-35^\circ of the model with E˙dep=120×1051ergss−1\dot{E}_{\rm dep}=120\times10^{51} {\rm ergs s^{-1}}.Comment: 6 pages, 3 figures. To appear in "ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: From the Dawn of Universe to the Formation of Solar System", AIP Conf. Proc. 1016 (December 2007, Sapporo), eds. T. Suda, T. Nozawa, et al. (Melville: AIP

    Optimising the oral midazolam dose for premedication in people with intellectual disabilities and/or autism spectrum disorder

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    Background: In people with intellectual disabilities and/or autism spectrum disorder, oral midazolam (OM) is very effective as premedication for facilitating medical treatment. In this retrospective study, we investigated the optimal dosage of OM for premedication. Methods: Patients with intellectual disability and/or autism spectrum disorder who were given OM as a premedication were selected from anaesthesia records. The primary outcome variable was the dose of OM (mg/kg) required to produce an adequate sedation. Results: The mean OM dose required was 0.32 ± 0.10 mg/kg. The required OM dose decreased significantly as age and weight increased, and age and weight were also shown to be significantly associated with the dose of OM in the multivariate linear regression analysis. Conclusion: The dosage of OM to achieve adequate sedation should decrease as the patient ages. Furthermore, adequate sedation can be achieved with even lower doses of OM in obese people

    Capsaicin May Improve Swallowing Impairment in Patients with Amyotrophic Lateral Sclerosis: A Randomized Controlled Trial

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    Patients with neurodegenerative diseases are at an increased risk of dysphagia and aspiration pneumonia. In this study, we examined whether ingestion of capsaicin prior to swallowing changes the temporal dynamics of swallowing in such patients. In a crossover, randomized controlled trial, 29 patients with neurodegenerative diseases were given a soluble wafer containing 1.5 ÎŒg capsaicin or an identical placebo 20 min prior to testing. For evaluation with video fluoroscopy (VF), patients consumed a barium-containing liquid plus thickening material. The durations of the latency, elevating and recovery periods of the hyoid were assessed from VF. Overall, no significant differences were observed in the duration of each period between capsaicin and placebo treatments. However, reductions in the latency and elevating periods were positively correlated with baseline durations. In subgroup analyses, that correlation was observed in patents with amyotrophic lateral sclerosis (ALS) but not in patients with Parkinson’s disease. The consumption of wafer paper containing capsaicin before the intake of food may be effective in patients with dysphagia related with certain neurodegenerative diseases, particularly ALS patients. Further studies will be needed to validate this finding
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