Aspects of noncanonical Hamiltonian field theory are reviewed. '·1any systems are Hamiltonian in the sense of possessing Poisson bracket structures, yet the equations are not in canonical form. A particular sys tem of thi s type is cons idered, namely reduced magnetohydrodynamics (RllHD) which was derived for tokamak modelling. The notion of a liePoisson bracket is reviewed; these are special P...

Missing data is a common problem in statistical analyses. To make use of information with incomplete observation, missing values can be imputed so that standard methods used to analyze the data. Variables are often categorical and miss ing pattern may not monotone. Currently, commonly imputation for non-monotone do allow di rect inclusion variables. Categorical variables converted numerical bef...

Christopher P. Evans *, Frans M.J. Debruyne , Heather Payne , Eduardo Solsona , Pierre Teillac , Andrea Tubaro f Department of Urology, University of California, Sacramento, CA, United States Department of Urology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands Department of Urology, University College London Hospitals NHS Foundation Trust, London, United Kingdom Departme...

Following the print publication of this article, the authors noted that an acknowledgment of the support given by Lesley Bell-Sakyi (University of Edinburgh) had been inadvertently omitted. The Ixodes ricinus tick cell line IRE/CTVM19 was provided by Lesley Bell-Sakyi. The authors have added the following publication to the references: Bell-Sakyi, L., E. Zweygarth, E.F. Blouin, E.A. Gould, and ...

The early initiation of enteral nutrition is considered to be standard care in patients with severe acute pancreatitis. Enteral nutrition was always delivered through a nasojejunal tube that had been placed en− doscopically or radiographically [1]. How− ever, variable success rates have been re− ported for different techniques for placing nasojejunal tubes [2± 4]. Without any di− rect or indire...

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Low-energy electron diffraction (LEED) is considered as elastic electron-atom scattering (EEAS) operating in a target crystal waveguide, where signal carrier wave wavenumber modulated by exchange-correlation (XC) interaction. A potential designed using KKR (Korringa-Kohn-Rostoker) muffin-tin (MT) model built on overlapping MT spheres that implement atoms with double degree of freedom, radius an...

BACKGROUND To understand teaching performance of individual faculty, the climate in which residents' learning takes place, the learning climate, may be important. There is emerging evidence that specific climates do predict specific outcomes. Until now, the effect of learning climate on the performance of the individual faculty who actually do the teaching was unknown. OBJECTIVES THIS STUDY: ...

Network embedding, aiming to project a network into low-dimensional space, is increasingly becoming focus of research. Semi-supervised embedding takes advantage labeled data, and has shown promising performance. However, existing semi-supervised methods would get unappealing results in the completely-imbalanced label setting where some classes have no nodes at all. To alleviate this, we propose...