Instrumented contact experiments are performed on three metallic glasses to systematically study shear band formation near a stress concentration. The results suggest that high local stresses at a point in the glass are insufficient to initiate a shear band. Rather, the yield strength must be exceeded along the entire length of a viable shear path in order for a shear band to form. Because of t...

INTRODUCTION Bone quality is largely dependent on the toughness of the tissue since age-related degradation in toughness makes bone more susceptible to fracture [1]. The observed decrease in bone toughness with age is mainly due to significant decreases in the capacity of the tissue to dissipate energy during the post-yield deformation [2]. Thus, understanding the post-yield behavior of bone is...

The article presents the results of tests on SHC-40 hydraulic props equipped with two types valve blocks: standard (with spring steel cylinder) and BZG-2FS gas spring). research was conducted using impact mass 4,000 kg extreme dynamic load free fall 20,000 released from different heights h. involved a camera speed image capture up to 1,200 frames/sec, which made it possible register stream liqu...

Late-onset Alzheimer's disease (LOAD), which is characterized by progressive deterioration in cognition, function, and behavior, is the most common cause of dementia and the sixth leading cause of all deaths, placing a considerable burden on Western societies. Most studies aiming to identify genetic susceptibility factors for LOAD have focused on non-Hispanic white populations. This is, in part...

We define matching between ventricle and afterload to imply that the ventricle is adapted to its afterload to yield maximum external work output. For the ventricle, this optimal adaption will depend on end-diastolic dimension, heart rate, and contractility. Because contractility is impaired during ventricular failure, we propose that the adaption between ventricle and load is not as good during...

Cvetković et al. [Appl. Math. Comput. 217 (2010), 2468–2480] presented an algorithm for dynamic load balancing in discrete load model based on the eigenvectors of the adjacency matrix of the processor network. In case of integral graphs, whose eigenvalues are integers and whose eigenvector basis may be chosen to consist of integers only, this algorithm executes in integer arithmetic, providing ...

This paper considers policies for distributing requests in clustered Web servers, wherein multiple server machines are conngured to function as a single high(er) performance Web server. We evaluate various load distribution policies with respect to both their ability to achieve good load balance (the primary goal) and also to their impact on the eeec-tiveness of per-machine caching. Trace-drive...

Mobility support in IP networks requires the use of servers to forward packets to mobile hosts and to maintain information pertaining to a mobile host’s location in the network. In one proposed protocol, the mobile-IP protocol, location and packet forwarding functions are provided by servers referred to as home agents. These home agents may become the bottleneck when there are a large number of...

This paper considers policies for distributing requests in clustered Web servers, wherein multiple server machines are configured to function as a single high(er) performance Web server. We evaluate various load distribution policies with respect to both their ability to achieve good load balance (the primary goal) and also to their impact on the effectiveness of per-machine caching. Trace-driv...