Cloud providers and companies running large-scale data centers offer near-line, cold, and archival data storage, which trade access latency and throughput performance for cost. These often require physical rack-scale storage designs, e.g. Facebook/Open Compute Project (OCP) Cold Storage or Pelican, which co-design the hardware, mechanics, power, cooling and software to minimize costs to support...

The main result of this paper is a new classification theorem for links (smooth embeddings in codimension 2). The classifying space is the rack space and the classifying bundle is the first James bundle. We investigate the algebraic topology of this classifying space and report on calculations given elsewhere. Apart from defining many new knot and link invariants (including generalised James-Ho...

pollution of water and soils by heavy metals is an emerging problem in industrialized countries.the present study was conducted to investigate the heavy metals concentration in water and sedimentsamples from ship breaking sites of sitakunda to assess the potential ecological risk posed by heavy metalusing different methods. heavy metals concentration was analyzed by atomic absorption spectrosco...

We introduce the notion of N-reduced dynamical cocycles and use these objects to define enhancements of the rack counting invariant for classical and virtual knots and links. We provide examples to show that the new invariants are not determined by the rack counting invariant, the Jones polynomial or the generalized Alexander polynomial.

Datacenters have traditionally been designed and deployed as a collection of server racks, where each rack consists of approximately 42 units of servers connected to one or two edge switches. In this model, computation is generally localized within a single server, and the edge switches provide 10 or 40 Gbps of non-blocking bandwidth between servers in the same rack. Although the traditional mo...

A heavy load drop into the spent fuel pool, or onto the spent fuel pool wall, can affect the structural integrity of the spent fuel pool. A loss-of-inventory from the spent fuel pool could occur as a result of a heavy load drop. The staff evaluated heavy loads as Generic Technical Activity A-36, which resulted in the publication of NUREG-0612 [Ref. 1]. Cask handling is expected to be the domina...

Load balancing algorithms goal is to keep all nodes normally loaded through migration of modules from heavy loaded nodes to lightly loaded nodes. In addition, load balancing must involve low communication overhead and respond quickly to load imbalance in the system. In previous load balancing algorithms, classification of node as heavy, light or normal loaded node is done by using concept of th...

this study was conducted to assess the concentration of some heavy metals and to examine their contamination hazard in atmospheric dust of urban, industrial and non-urban areas in bushehr province, southwestern iran. fifty dust samples from the leaves of the palm trees and fifty surface soil samples from bushehr and assaluyeh cities as urban and industrial areas, respectively, and also from the...

OBJECTIVE Metal contamination of humans in war areas has rarely been investigated. Weaponry's heavy metals become environmentally stable war remnants and accumulate in living things. They also pose health risks in terms of prenatal intake, with potential long term risks for reproductive and children's health. We studied the contribution of military attacks to the load of 23 metals in the hair o...

This article is designed to solve the problem of system load imbalance and low efficiency introduced by massive parallel tasks running on some heavy nodes in the Cloud Computing environment. This study proposes a load balancing algorithm based on virtual machine migration which includes load balancing architecture, load gathering, load monitoring, load forecasting, migration trigger time, sourc...