In the early 1990’s, Kim and Roush developed path methods for establishing strong shift equivalence (SSE) of positive matrices over a dense subring U of R. This paper gives a detailed, unified and generalized presentation of these path methods. New arguments which address arbitrary dense subrings U of R are used to show that for any dense subring U of R, positive matrices over U which have just...

Background: Square-Stepping Exercise (SSE) was developed as a novel exercise form that combines physical and cognitive training. Participants watch, recognize, memorize and follow step patterns which an instructor demonstrates on a 4 by 10 square-patterned SSE mat without viewing printed pattern diagrams. The purpose of this study was to examine the effects of SSE on cognitive function. Methods...

BACKGROUND We examined the risk of stroke or systemic embolism (SSE) conferred by heart failure (HF) and left ventricular systolic dysfunction (LVSD) in the Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation Trial (ARISTOTLE), as well as the effect of apixaban versus warfarin. METHODS AND RESULTS The risk of a number of outcomes, including the composite of...

A searchable symmetric encryption (SSE) scheme allows a client to store a set of encrypted files on an untrusted server in such a way that he can efficiently retrieve some of the encrypted files containing (or indexed by) specific keywords keeping the keywords and the files secret. In this paper, we first extend the model of SSE schemes to that of verifiable SSE schemes, and formulate the UC se...

− The calibration of radiation thermometers requires knowledge of the target size effect on the thermometer output, namely the size of source effect (SSE). The measurement of an instrument SSE allows to calculate a correction, or an estimation for this source of uncertainty. For a correct determination of SSE it is necessary to use large aperture radiation sources of uniform spectral radiance. ...

BACKGROUND Cutaneous melanoma is the fastest growing tumor of the skin and the median life span of patients with advanced disease is less than a year. Melanoma-related mortality can be reduced through early detection via clinical skin exams and patient self-examination. Despite the potential to reducing the medical burden associated with clinical skin exams, systematic and regular skin self-exa...

The social Simon effect (SSE) occurs if two participants share a Simon task by making a Go/No-Go response to one of two stimulus features. If the two participants perform this version of the Simon task together, a Simon effect occurs (i.e., performance is better with spatial stimulus-response correspondence), but no effect is observed if participants perform the task separately. The SSE has bee...

OBJECTIVES To examine specific behaviors used by older adults while ascending and descending stairs and to assess the relationships between confidence and stair performance. DESIGN Cross-sectional. SETTING Center for Locomotion Studies, The Pennsylvania State University. PARTICIPANTS Sixteen male (mean age=82.7, range= 77-89) and 16 female (mean age=82.2, range=77-87) community-dwelling a...

[1] Slow slip events (SSE) in many subduction zones incrementally stress the adjacent locked megathrust, suggesting that they could potentially either trigger or evolve into damaging earthquakes. We explore this with 2D quasidynamic simulations with rate-state friction, dilatancy, and coupled 1D pore-fluid and heat transport. Steady-state weakening friction allows transient slip to nucleate, bu...

OBJECTIVE Chlorpyrifos (CP) as an organophosphorus pesticide is thought to induce oxidative stress in human cells via producing reactive oxygen species (ROS) that leads to the presence of pathologic conditions due to apoptosis along with acetylcholinesterase (AChE) inhibition.This study aimed to evaluate the apoptotic effects of CP and to assess the protective potential of CeO2nanoparticle (CNP...