A new mathematical model based on the alternative process routings in presence of a queuing system in a dynamic cellular manufacturing system has been proposed in this paper.This model integrates two problems of cell formation and inter-cell layout and also an efficiency factor which is defined for minimizing the cell load variation through the maximizing the busy time for all machine types. In...

Optimizing the operation of IEEE 802.11 networks requires estimatingthe load of the wireless channel. The channel busy fraction, which is thefraction of time in which the wireless channel is sensed busy due to suc-cessful or unsuccessful transmissions, can be used as indicator for this pur-pose. It can be obtained from e.g. the IEEE 802.11k channel load reportor hardware-spe...

The heat shock protein Hsp90 is a molecular chaperone which assists the refolding of misfolded proteins, but also has highly selective functions in normal metabolism. These dual functions enable Hsp90 to connect environmental conditions with developmental processes and to buffer genetic changes.

With the advent of multicores, multithreaded programming has acquired increased importance. In order to obtain good performance, the synchronization constructs in multithreaded programs need to be carefully implemented. These implementations can be broadly classified into two categories: busy-wait and schedule-based. For shared memory architectures, busy-wait synchronizations are preferred over...

Consider a uid queue fed by N on/oo sources. It is assumed that the silence periods of the sources are exponentially distributed, whereas the activity periods are generally distributed. The innow rate of each source, when active, is at least as large as the outtow rate of the buuer. We make two contributions to the performance analysis of this model. Firstly, we determine the Laplace-Stieltjes ...

Telomeres are the terminal structures at the ends of linear chromosomes that represent a solution to the end replication problem. Specific binding of the six-protein subunit complex shelterin to telomeric, repetitive TTAGGG DNA sequences contributes to the stable architecture and maintenance of telomeres. Proteins involved in the DNA damage response are also localized at telomeres, and play a r...

This paper presents a sensitivity investigation of the expected busy period for a controllable M/G/1 queueing system by means of a factorial design statistical analysis. We studies the effect of four important factors (parameters) that influence the expected busy period of an M/G/1 system, in which the server operates -policy in his idle period. A 2 4 factorial experimental design is used ...

The busy period for a queue is cast as the area swept under the random walk until it first returns to zero. Encompassing non-i.i.d. increments, the large-deviations asymptotics of the busy period B is addressed, under the assumption that the increments satisfy standard conditions, including a negative drift. The main conclusions provide insight on the probability of a large busy period, and the...