BACKGROUND AND OBJECTIVES In this single-institution study, we aimed to compare the safety, feasibility, and outcomes of single-incision laparoscopic sigmoidectomy (SILSS) with multiport laparoscopic sigmoidectomy (MLS) for recurrent diverticulitis. METHODS Between October 2011 and February 2013, 60 sigmoidectomies were performed by the same surgeon. Forty patients had a MLS and 20 patients h...

The celebrated multi-armed bandit (MAB) problem, originating from the work of Gittins et al. [GGW89], presumes a condition on the arms called the martingale assumption. Recently, A. Gupta et al. obtained an LP-based 1 48 -approximation for the problem with the martingale assumption removed [GKMR11]. We improve the algorithm to a 4 27 -approximation, with simpler analysis. Our algorithm also gen...

Acute kidney injury (AKI) is a serious medical condition affecting millions of people. Patients in intensive care unit (ICU) who develop AKI have increased morbidity and mortality, prolonged length of stay in ICU and hospital and increased costs, especially when they require renal replacement therapy. In the latter case, morbidity and mortality increase further. In order to meet the needs of th...

Background: There have been several attempts to systematically assess performance in bronchoscopy. Earlier validation studies have used bronchoscopy simulators, not real-life performance in patients. Objectives: The aim of this study was to explore the reliability and validity of an assessment tool aimed for the use in a clinical setting. Methods: Five junior residents, 5 senior residents and 9...

*Correspondence: Olav Aursjø and Knut J. Måløy, Department of Physics, University of Oslo, PO Box 1048 Blindern, NO-0316 Oslo, Norway e-mail: [email protected]; [email protected] We present an experimental study of two-phase flow in a quasi-two-dimensional porous medium. The two phases, a water-glycerol solution and a commercial food grade rapeseed/canola oil, having an oil to water-gly...

Jan I. Pedersen*, Philip T. James, Ingeborg A. Brouwer, Robert Clarke, Ibrahim Elmadfa, Martijn B. Katan, Penny M. Kris-Etherton, Daan Kromhout, Barrie M. Margetts, Ronald P. Mensink, Kaare R. Norum, Mike Rayner and Matti Uusitupa Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, POB 1046 Blindern, 0316 Oslo, Norway London School of Hygiene and Tropical Medicine,...

We provide a non-interleaving operational semantics for the pi-calculus as asynchronous transition systems, which generalizes the standard interleaving structural operational semantics and unfolds to standard, stable prime event structures. We follow the approach taken by Mukund and Nielsen in providing non-interleaving semantics for CCS by infering the so-called prefixing (structural or subjec...

Author’s Affi liation: The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts Corresponding Author: Michael T. Hemann, The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 76-361B, Cambridge, MA 02139. Phone: 617324-1964; Fax: 617-252-1891; E-mail: hemann...

THE DYNAMICS OF HOUSING PRICES: AN INTERNATIONAL PERSPECTIVE∗ by Peter Englund Yannis M. Ioannides Department of Economics Department of Economics University of Uppsala VPI&SU S–751 20 Uppsala Sweden Blacksburg, VA 24061-0316 Telephone: 46-18-181105 Telephone: 1-703-231-7981 Email: Email: yannis@vtvm1 This paper provides an international perspective on the dynamics of housing prices in alternat...