pancreatic stent proximal migration is a well known complication of pancreatic duct stenting, which occurs in about 5-6% of cases. serious complications should be avoided by retrieval of the stent via different endoscopic techniques. we report a new technique previously reported only once (in a pancreatic duct with underlying pathology), to remove the proximally migrated pancreatic stent in a n...

H. G. Reynolds, H. Yoshioka, G. Neumann, P. Lang ASL, GE Healthcare, Milwuakee, WI, United States, Radiology, Brigham and Women's Hospital, Boston, MA, United States Introduction: Magnetic resonance imaging (MRI) is an excellent modality for non-invasive evaluation of cartilage lesions in knees. T2-weighted contrast with low to intermediate cartilage signal and high fluid signal is one of the p...

This paper describes an approach to architectural modeling that is currently under development at Boston University’s School of Management. The approach builds both on our research on process modeling and systems design and also on our experience teaching design to students in the school’s MS·MBA program. The guide in its current form is focused primarily on the practical business of actually c...

*David S. Johnson is with the U.S. Bureau of Labor Statistics. Timothy M. Smeeding is the Maxwell Professor of Public Policy at Syracuse University. The opinions and conclusions are solely those of the author and should not be construed as representing the opinions or policies of SSA or any agency of the Federal Government or of the Center for Retirement Research at Boston College. The authors ...

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Feedforward networks composed of units which compute a sigmoidal function of a weighted sum of their inputs have been much investigated. We tested the approximation and estimation capabilities of networks using functions more complex than sigmoids. Three classes of functions were tested: polynomials, rational functions, and flexible Fourier series. Unlike sigmoids, these classes can fit non-mon...

In this paper we introduce the concept of weighted deficiency for abstract and pro-p groups and study groups of positive weighted deficiency which generalize Golod-Shafarevich groups. In order to study weighted deficiency we introduce weighted versions of the notions of rank for groups and index for subgroups and establish weighted analogues of several classical results in combinatorial group t...

In this paper we introduce the concept of weighted deficiency for abstract and pro-p groups and study groups of positive weighted deficiency which generalize Golod-Shafarevich groups. In order to study weighted deficiency we introduce weighted versions of the notions of rank for groups and index for subgroups and establish weighted analogues of several classical results in combinatorial group t...