Analytical models of selected DiffServ network elements supporting Assured Forwarding (AF) service in a Differentiated Services (DiffServ) network are proposed in the dissertation. Simple analytical models for main network elements: meter/markers and droppers are provided. Models of the following meter/markers were proposed: Single Rate Three Color Marker (srTCM), Two Rate Three Color Marker (t...

Cattle handling is a dangerous activity on dairy farms, and cows are a major cause of injuries to livestock handlers. Even if dairy cows are generally tranquil and docile, when situations occur that they perceive or remember as aversive, they may become agitated and hazardous to handle. This study aimed to compare human-animal interactions, cow behavior, and handler safety when moving cows to d...

The objective of this paper is to study the M/M/R machine repair queueing system with mixed standbys. The life-time and repair time of units are assumed to be exponentially distributed. Failed units are repaired on FCFS basis. The standbys have switching failure probability q (0≤q≤1). The repair facility of the system consists of R permanent as well as r additional removable repairmen. Due to i...

The problem considered in this paper is the single server bulk service queuing system characterized by (i) Hyper-Poisson arrival time distribution with k branches, the mean arrival rates depending upon the state of the system; (ii) first come, first served queue discipline; (iii) exponential service time distribution, the mean service rate depending upon the state of the system; and (iv) finite...

This paper deals with the transient analysis of batch arrival retrial queueing system with general retrial times, priority service, balking, second optional service, Bernoulli vacation, extended vacation, breakdown, delayed repair and stand by server. Here we assume that customers arrive in batches according to compound Poisson processes, where the blocked customers either with probability p jo...

Is medical school only for the rich? T imes are getting tough in Canada for those who aspire to a post-secondary education but are not from wealthy families. Surveys done at the University of Western Ontario reveal that medical students are a privileged crew, coming from homes with family incomes in the top few percentiles. This phenomenon has intensified dramatically in the last few years, coi...

Three experiments, each using 280 pigs, were conducted in a simulated compartment to test the effect of angle of entrance (AOE) to the ramp (90°, 60°, 30°, or 0°), ramp slope (0°, 16°, 21°, or 26°), and an initial 20-cm step associated with 16° or 21° ramp slopes on the ease of handling, heart rate (HR), and behavior of near market-weight pigs during unloading. Heart rate (pigs and handler), un...

filled in later by what he hoped would be a more cooperative, post-Bush US government. Some diplomats mistakenly thought Gore was telling them to give up their tough stance at Bali. The biggest bit of theater wasn't generally reported as theater at all. And that was a European push to include non-binding language in the preamble of the Bali Roadmap. That language called on developed nations to ...