3,788,132 research outputs found

    Accuracy of c-KIT in lung cancer prognosis; a systematic review protocol" instead of c-KIT expression in lung cancer prognostic evaluation - A systematic review protocol

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    Background: Extensive efforts have been made to investigate c-KIT expression in lung cancer specimens and its correlation with clinical outcomes, but the issue remains unresolved. Thus, this study will be conducted to clarify the prognostic value of c-KIT expression in lung cancer patients. Materials and Methods: We will search Pubmed, SCOPUS, and ISI web of sciences with no restriction of language. Studies with any design (except case reports or case series) evaluating correlations of c-KIT expression with survival or outcome in patients with lung cancer will be included. The outcome measures will include all types of survival indexes, including overall survival rate and disease free survival using Kaplan-Meier analysis and hazard ratios. Study selection and data extraction will be performed by two independent researchers. Quality assessment (assessment of risk of bias) and data synthesis will be implemented using Stata software version 11.1. Results: No ethical issues are predicted. These findings will be published in a peer-reviewed journal and presented at national and international conferences. Conclusions: This systematic review protocol is registered in the PROSPERO International Prospective Register of Systematic Reviews, registration number = CRD42015023391

    The Maupertuis principle and canonical transformations of the extended phase space

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    We discuss some special classes of canonical transformations of the extended phase space, which relate integrable systems with a common Lagrangian submanifold. Various parametric forms of trajectories are associated with different integrals of motion, Lax equations, separated variables and action-angles variables. In this review we will discuss namely these induced transformations instead of the various parametric form of the geometric objects

    Relational Representations in Reinforcement Learning: Review and Open Problems

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    This paper is about representation in RL.We discuss some of the concepts in representation and generalization in reinforcement learning and argue for higher-order representations, instead of the commonly used propositional representations. The paper contains a small review of current reinforcement learning systems using higher-order representations, followed by a brief discussion. The paper ends with research directions and open problems.\u

    Quantum optical effective-medium theory for loss-compensated metamaterials

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    A central aim in metamaterial research is to engineer sub-wavelength unit cells that give rise to desired effective-medium properties and parameters, such as a negative refractive index. Ideally one can disregard the details of the unit cell and employ the effective description instead. A popular strategy to compensate for the inevitable losses in metallic components of metamaterials is to add optical gain material. Here we study the quantum optics of such loss-compensated metamaterials at frequencies for which effective parameters can be unambiguously determined. We demonstrate that the usual effective parameters are insufficient to describe the propagation of quantum states of light. Furthermore, we propose a quantum-optical effective-medium theory instead and show that it correctly predicts the properties of the light emerging from loss-compensated metamaterials.Comment: 6 pages, 3 figures. Accepted for Physical Review Letter

    Missing bits of the solar jigsaw puzzle: small-scale, kinetic effects in coronal studies

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    The solar corona, anomalously hot outer atmosphere of the Sun, is traditionally described by magnetohydrodynamic, fluid-like approach. Here we review some recent developments when, instead, a full kinetic description is used. It is shown that some of the main unsolved problems of solar physics, such as coronal heating and solar flare particle acceleration can be viewed in a new light when the small-scale, kinetic plasma description methods are used.Comment: 10 pages, 6 figure

    Habeas Corpus and Due Process

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    The writ of habeas corpus and the right to due process have long been linked together, but their relationship has never been more unsettled or important. Following the September 11, 2001 attacks, the United States detained hundreds of suspected terrorists who later brought legal challenges using the writ. In the first of the landmark Supreme Court cases addressing those detentions, Hamdi v. Rumsfeld, the plurality chiefly relied on the Due Process Clause to explain what procedures a court must follow. Scholars assumed due process would govern the area. Yet in Boumediene v. Bush, the Court did not take the due process path and instead held that the Suspension Clause extended habeas corpus process to noncitizen detainees at Guant Ā“ anamo Bay. Boumediene correctly grounded the analysis in the Suspension Clause, not the Due Process Clause. The Court held that the Suspension Clause demands a traditional habeas process, simply asking whether the detention is legally and factually authorized. This view challenges the set of standards that judges currently use in executive detention cases and also has implications for domestic habeas; it could ground innocence claims in the Suspension Clause. More broadly, this Suspension Clause theory reflects commonalities in the structure of statutes and case law regulating habeas corpus across its array of applications to executive detention and postconviction review. Habeas review now plays a far more central role in the complex regulation of detention than scholars predicted, because habeas review does not depend on underlying due process rights. A judge instead focuses on whether a detention is authorized. As a result, habeas review can inversely play its most crucial role when prior process is inadequate. Put simply, the Suspension Clause can ensure that habeas corpus begins where due process ends
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