At every iteration or timestep of the online phase some reduced-order modelling schemes for non-linear time-dependent systems, large linear systems must be assembled and then projected onto a reduced order basis small dimension. The are cheap to solve, but assembly projection become dominant computational cost. In this paper we introduce new hyper-reduction strategy called (RA) that drastically...

Algebraic multigrid (AMG) is an O(n) solution process for many large sparse linear systems. A hierarchy of progressively coarser grids is constructed that utilize complementary relaxation and interpolation operators. High-energy error is reduced by relaxation, while low-energy error is mapped to coarse-grids and reduced there. However, large parallel communication costs often limit parallel sca...

Introduction: Tuberculous otitis media (TOM) is an uncommon, insidious, and frequently misdiagnosed form of tuberculosis (TB). In particular, TOM is usually secondary to direct transmission from adjacent organs, while the primary form has been rarely reported. The main aim of treatment is to start the patient on an antitubercular regime and early surgical intervention to decompress the facial n...

The purpose of this paper is to identify the information needs of the small business and then to examine the various computer software acquisition options available that may be used to obtain the software necessary to help satisfy these information needs. The relationships between the acquisition options and their relative acquisition costs and associated risk levels of computer assisted crime ...

Data and actions are tightly coupled. On one hand, data analysis results trigger decision making and actions. On the other hand, the action of acquiring data is the very first step in the whole data processing pipeline. Data acquisition almost always has some costs, which could be either monetary costs or computing resource costs such as sensor battery power, network transfers, or I/O costs. Us...

During the 1990s, concerns that nonprofit (NP) hospitals were being sold at below-market prices to investor-owned (IO) chains helped to prompt the widespread adoption of state laws regulating the sale and conversion of nonprofits. In this paper, we provide a simple test of under-pricing using the IO acquirer's abnormal stock market returns at the time of the acquisition. Prior to regulation, we...

Multi-channel Analysis of Surface Waves (MASW) is a suitable technique for vertical shear-wave velocity profile determination whose efficiency and effectiveness depends on data acquisition parameters and processing procedures. In the present paper we compare the performances of three different methods to determine Rayleigh waves dispersion curves. Such curves are successively exploited for the ...