154 research outputs found

    IO vs OI in Higher-Order Recursion Schemes

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    We propose a study of the modes of derivation of higher-order recursion schemes, proving that value trees obtained from schemes using innermost-outermost derivations (IO) are the same as those obtained using unrestricted derivations. Given that higher-order recursion schemes can be used as a model of functional programs, innermost-outermost derivations policy represents a theoretical view point of call by value evaluation strategy.Comment: In Proceedings FICS 2012, arXiv:1202.317

    Reliability-Aware Power Management Of Multi-Core Systems (MPSoCs)

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    Long-term reliability of processors in embedded systems is experiencing growing attention since decreasing feature sizes and increasing power consumption have a negative influence on the lifespan. Among other measures, the reliability can be influenced significantly by Dynamic Power Management (DPM), since it affects the processor\u27s temperature. Compared to single-core systems reconfigurable multi-core SoCs offer much more possibilities to optimize power and reliability. The impact of different DPM-strategies on the lifespan of multi-core processors is the focus of this presentation. It is shown that the long-term reliability of a multi-core system can be influenced deliberately with different DPM strategies and that temperature cycling greatly influences the estimated lifespan. In this presentation, a new reliability-aware dynamic power management (RADPM) policy is explained

    Need for nursing care support in cancer patients: Registry-linkage study in Germany

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    Aim: In Germany, very little is known about the need for assistance and nursing care support among cancer patients after hospitalization. The aim of this study was to describe nursing care support for cancer patients and to analyse whether these patients need more care assistance than other persons in need for care. Methods: This was a registry linkage study conducted in 2011. Cases were identified from the population-based cancer registry for the Muenster District in north-western Germany and in factually anonymised form linked by a semi-automatic probabilistic procedure (the standard procedure of the cancer registry) with medical examination records of patients applying for assistance and nursing care support from the regional statutory health insurance. The application records of 4,029 patients with colon, breast and prostate cancer were compared to a reference group of 13,104 non-cancer patients. Results: In only 41.7% of colon, 45.8% of breast and 37.4% of prostate cancer patients was the malignancy the main underlying diagnostic cause for the application of assistance and nursing care. These patients were on average younger (mean age 71.1 vs. 76.8 years) than the non-cancer reference group, required higher levels of support (79.5 vs. 58.1% “considerable” or higher level care need) and their applications were less likely to be rejected (odds ratios [ORs] 0.26, 0.28, and 0.31, respectively). By contrast, the proportion of successful applications and the level of support granted did not differ between multimorbid cancer patients with other main diagnoses as compared to non-cancer applicants. Conclusion: Patients with colon, breast or prostate cancer do not need per se more nursing care than non-cancer patients. Only if cancer is the main underlying diagnosis for nursing care support, higher levels of support are needed

    Calcium Phosphate Nanoparticle-Based Vaccines as a Platform for Improvement of HIV-1 Env Antibody Responses by Intrastructural Help

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    Incorporation of immunodominant T-helper epitopes of licensed vaccines into virus-like particles (VLP) allows to harness T-helper cells induced by the licensed vaccines to provide intrastructural help (ISH) for B-cell responses against the surface proteins of the VLPs. To explore whether ISH could also improve antibody responses to calcium phosphate (CaP) nanoparticle vaccines we loaded the nanoparticle core with a universal T-helper epitope of Tetanus toxoid (p30) and functionalized the surface of CaP nanoparticles with stabilized trimers of the HIV-1 envelope (Env) resulting in Env-CaP-p30 nanoparticles. In contrast to soluble Env trimers, Env containing CaP nanoparticles induced activation of naĂŻve Env-specific B-cells in vitro. Mice previously vaccinated against Tetanus raised stronger humoral immune responses against Env after immunization with Env-CaP-p30 than mice not vaccinated against Tetanus. The enhancing effect of ISH on anti-Env antibody levels was not attended with increased Env-specific IFN-Îł CD4 T-cell responses that otherwise may potentially influence the susceptibility to HIV-1 infection. Thus, CaP nanoparticles functionalized with stabilized HIV-1 Env trimers and heterologous T-helper epitopes are able to recruit heterologous T-helper cells induced by a licensed vaccine and improve anti-Env antibody responses by intrastructural help

    Floodplain management in temperate regions : is multifunctionality enhancing biodiversity?

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    Background: Floodplains are among the most diverse, dynamic, productive and populated but also the most threatened ecosystems on Earth. Threats are mainly related to human activities that alter the landscape and disrupt fluvial processes to obtain benefits related to multiple ecosystem services (ESS). Floodplain management therefore requires close coordination among interest groups with competing claims and poses multi-dimensional challenges to policy-makers and project managers. The European Commission proposed in its recent Biodiversity Strategy to maintain and enhance European ecosystems and their services by establishing green infrastructure (GI). GI is assumed to provide multiple ecosystem functions and services including the conservation of biodiversity in the same spatial area. However, evidence for biodiversity benefits of multifunctional floodplain management is scattered and has not been synthesised. Methods/design: This protocol specifies the methods for conducting a systematic review to answer the following policy-relevant questions: a) what is the impact of floodplain management measures on biodiversity; b) how does the impact vary according to the level of multifunctionality of the measures; c) is there a difference in the biodiversity impact of floodplain management across taxa; d) what is the effect of the time since implementation on the impact of the most important measures; and e) are there any other factors that significantly modify the biodiversity impact of floodplain management measures? Within this systematic review we will assess multifunctionality in terms of ESS that are affected by an implemented intervention. Biodiversity indicators included in this systematic review will be related to the diversity, richness and abundance of species, other taxa or functional groups. We will consider if organisms are typical for and native to natural floodplain ecosystems. Specific inclusion criteria have been developed and the wide range of quality of primary literature will be evaluated with a tailor-made system for assessing susceptibility to bias and the reliability of the studies. The review is intended to bridge the science-policy interface and will provide a useful synthesis of knowledge for decision-makers at all governance levels

    Scaling analysis of the magnetic monopole mass and condensate in the pure U(1) lattice gauge theory

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    We observe the power law scaling behavior of the monopole mass and condensate in the pure compact U(1) gauge theory with the Villain action. In the Coulomb phase the monopole mass scales with the exponent \nu_m=0.49(4). In the confinement phase the behavior of the monopole condensate is described with remarkable accuracy by the exponent \beta_{exp}=0.197(3). Possible implications of these phenomena for a construction of a strongly coupled continuum U(1) gauge theory are discussed.Comment: Added references [1

    Need for nursing care support in cancer patients: Registry-linkage study in Germany

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    Aim: In Germany, very little is known about the need for assistance and nursing care support among cancer patients after hospitalization. The aim of this study was to describe nursing care support for cancer patients and to analyse whether these patients need more care assistance than other persons in need for care.Methods: This was a registry linkage study conducted in 2011. Cases were identified from the population-based cancer registry for the Muenster District in north-western Germany and in factually anonymised form linked by a semi-automatic probabilistic procedure (the standard procedure of the cancer registry) with medical examination records of patients applying for assistance and nursing care support from the regional statutory health insurance. The application records of 4,029 patients with colon, breast and prostate cancer were compared to a reference group of 13,104 non-cancer patients.Results: In only 41.7% of colon, 45.8% of breast and 37.4% of prostate cancer patients was the malignancy the main underlying diagnostic cause for the application of assistance and nursing care. These patients were on average younger (mean age 71.1 vs. 76.8 years) than the non-cancer reference group, required higher levels of support (79.5 vs. 58.1% “considerable” or higher level care need) and their applications were less likely to be rejected (odds ratios [ORs] 0.26, 0.28, and 0.31, respectively). By contrast, the proportion of successful applications and the level of support granted did not differ between multimorbid cancer patients with other main diagnoses as compared to non-cancer applicants.Conclusion: Patients with colon, breast or prostate cancer do not need per se more nursing care than non-cancer patients. Only if cancer is the main underlying diagnosis for nursing care support, higher levels of support are needed.

    High-statistics finite size scaling analysis of U(1) lattice gauge theory with Wilson action

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    We describe the results of a systematic high-statistics Monte-Carlo study of finite-size effects at the phase transition of compact U(1) lattice gauge theory with Wilson action on a hypercubic lattice with periodic boundary conditions. We find unambiguously that the critical exponent nu is lattice-size dependent for volumes ranging from 4^4 to 12^4. Asymptotic scaling formulas yield values decreasing from nu(L >= 4) = 0.33 to nu(L >= 9) = 0.29. Our statistics are sufficient to allow the study of different phenomenological scenarios for the corrections to asymptotic scaling. We find evidence that corrections to a first-order transition with nu=0.25 provide the most accurate description of the data. However the corrections do not follow always the expected first-order pattern of a series expansion in the inverse lattice volume V^{-1}. Reaching the asymptotic regime will require lattice sizes greater than L=12. Our conclusions are supported by the study of many cumulants which all yield consistent results after proper interpretation.Comment: revtex, 12 pages, 9 figure

    Nachgefragt: 25 Fragen und Antworten zum Stand des Wissens rund um Ă–ko-Landbau und Bio-Lebensmittel - Argumentationsleitfaden zum Ă–kologischen Landbau fĂĽr Multiplikatoren

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    „Ist Bio denn wirklich gesünder?“ Dies ist nur eine der vielen Fragen, die immer wieder gestellt werden, wenn es um Ökologischen Landbau und Bio-Lebensmittel geht. Und: Sie werden mit dem wachsenden Bio-Markt und der zunehmenden Beliebtheit seiner Produkte immer häufiger, immer kritischer und nach wie vor oftmals vorurteilsbeladen und polemisch gestellt. Dieser Argumentationsleitfaden will die Diskussion versachlichen. Auf dem Stand des Wissens stellt er die Vorzüglichkeit der ökologischen Lebensmittelwirtschaft sachlich, fundiert und übersichtlich dar und benennt ebenso Bereiche, bei denen noch Defizite und somit Handlungsbedarf besteht. Damit werden Fragestellungen aufgegriffen, die in der gesellschaftlichen Auseinandersetzung um die biologische Lebensmittelwirtschaft immer wieder zu Diskussionen und Auseinandersetzungen führen. Zu den Themenfeldern Grundlagen, Erzeugung, Verarbeitung, Vermarktung, Qualität, Umweltwirkungen sowie ökologische Lebensmittelwirtschaft und Gesellschaft werden 25 Fragen so beantwortet, dass die wichtigsten Gesichtspunkte zu der jeweiligen Frage „auf einen Blick“ in einer logischen Argumentationskette zur Verfügung stehen. Quellenverweise ermöglichen es, einzelne Sachverhalte zu vertiefen. Damit ist der Argumentationsleitfaden ein wichtiges Instrument für Journalisten und Politiker, die Fragen zur ökologischen Lebensmittelwirtschaft haben, sich schnell und doch umfassend zu informieren. Ebenso soll der Leitfaden für die Multiplikatoren der Branche, wie Verbandsvertreter oder Ausbilder, eine Hilfe in der täglichen Arbeit sein. Sei es, um sich auf eine Podiumsdiskussion vorzubereiten, einem Pressevertreter weiterführende Quellen nennen zu können oder um bei der Verkäuferschulung Antworten auf häufig gestellte Kundenfragen besprechen zu können
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