WELCOME to the last issue of 2017, the second extended issue of this year which brings together 12 papers. We start the issue with two survey papers that offer deep analyses of popular research areas. Robert Bodily and Katrien Verbert present a “Review of Research on Student-Facing Learning Analytics Dashboards and Educational Recommender Systems”. Research into systems that track learning anal...

Polymers for Advanced TechnologiesVolume 33, Issue 7 p. 2386-2386 CORRIGENDUMFree Access Corrigendum: Synthesis of millimeter-sized hydrogel beads by inverse Pickering polymerization using starch-based nanoparticles as emulsifier This article corrects the following: Kankan Zhai, Fan Zhang, Chao Wang, Xiaopeng Pei, Ying Tan, Yungang Bai, Baichao Yinchuan Kun Xu, Pixin Volume 31Issue 6Polymers Te...

I spent most of the years of the second world war serving in the Royal Army Medical Corps. In January 1939, 1 had been appointed consultant physician to the Brompton Hospital, remaining a member ofthe staff of the department of medicine at the British (now Royal) Postgraduate Medical School at Hammersmith, which I had joined at its inception in 1935. I was thus embarked on a career as a consult...

Problem A1 We call a finite set of positive integers feasible if every member of S has the form 23, and no member of S divides any other member of S. We call a positive integer n feasible if n = ∑ S for some feasible set S. We are required to show that every positive integer is feasible. If not, then there exists a smallest infeasible number n. If n is even, say n = 2k for some positive integer...

introduction extreme floods, hyperconcentrated and debris flows are common natural hazards in the basins which located in the northern slops of alborz mountain range (iranian north system). flood occurrence in golestan national park in 2001, 2002 and 2005( hosseinzadeh and jahadi toroghi 2012), yearly flash floods in masuleh catchment( rezaei, 2009), large flood in neka basin in 1999(poorahmad ...

Background: Although previous studies have assessed barriers to influenza vaccination in general populations, few studies have assessed barriers among ill persons to inform prevention programs. Methods: We conducted a telephone survey of patients hospitalized with laboratory-confirmed 2009 H1N1infection from December 2009 through April 2010 to evaluate pandemicvaccination coverage and identify ...