In this paper we review and further develop a class of strong stability-preserving (SSP)high-order time discretizations for semidiscrete method of lines approximations of par-tial differential equations. Previously termed TVD (total variation diminishing) timediscretizations, these high-order time discretization methods preserve the strong stabil-ity properties of first-order Eu...

We apply the concept of effective order to strong stability preserving (SSP) explicit Runge–Kutta methods. Relative to classical Runge–Kutta methods, effective order methods are designed to satisfy a relaxed set of order conditions, but yield higher order accuracy when composed with special starting and stopping methods. The relaxed order conditions allow for greater freedom in the design of ef...

Strong stability-preserving (SSP) Runge–Kutta methods were developed for time integration of semidiscretizations of partial differential equations. SSP methods preserve stability properties satisfied by forward Euler time integration, under a modified time-step restriction. We consider the problem of finding explicit Runge–Kutta methods with optimal SSP time-step restrictions, first for the cas...

Providing Quality of Service (QOS) in an efficient and scalable manner in the Internet is a topic of active research. The technologies that have drawn the most attention are Integrated Services (IntServ), Differential Services (DiffServ) and Label Switching(MPLS). While these technologies are orthogonal in many respects and can coexist, they are all similar with respect to the fact that some or...

A large literature has been concerned with the impacts of recent welfare reforms on income, earnings, transfers, and labor-force attachment. While one strand of this literature relies on observational studies conducted with large survey-sample data sets, a second makes use of data generated by experimental evaluations of changes to means-tested programs. Much of the overall literature has focus...

OBJECTIVES Precursors to 1/3 of colorectal cancer (CRC), serrated polyps have been under-detected by screening due to their inconspicuous, non-hemorrhagic, and proximal nature. A new multi-target stool DNA test (multi-target sDNA) shows high sensitivity for both CRC and advanced adenomas. Screen detection of serrated polyps by this approach requires further validation. We sought to assess and c...

The purpose of this study was to compare the resulting full width at half maximum of slice sensitivity profiles (SSP) generated by several commercially available point response phantoms, and determine an appropriate imaging technique and analysis method. Four CT phantoms containing point response objects designed to produce a delta impulse signal used in this study: a Fluke CT-SSP phantom, a Ga...

BACKGROUND Disorders of rotator cuff tendons results in acute pain limiting the normal range of motion for shoulder. Of all the tendons in rotator cuff, supraspinatus (SSP) tendon is affected first of any pathological changes. Diagnosis of SSP tendon using ultrasound is considered to be operator dependent with its accuracy being related to operator's level of experience. METHODS The automatic...

Providing Quality of Service (qos) in an eecient and scalable manner in the Internet is a topic of active research. The technologies that have drawn the most attention are Integrated Services (IntServ), Diierential Services (DiiServ) and Label Switching(mpls). While these technologies are orthogonal in many respects and can coexist, they are all similar with respect to the fact that some or all...

Direction of arrival estimation in coherent multipath environment by using the superresolution technique often requires decorrelation techniques. Spatial smoothing preprocessings are the most popular scheme as the techniques. In mobile environment, position change of the target/transmitter often brings us decorrelation effect. Multiple transmitting signals by an antenna array like a MIMO transm...