Using the ring of complex quaternions, the more active view of weakly coupled gauge fields is formulated in such a way that, in the SU(.2) x U(1) model of Salam, Ward, and Weinberg, for example, AS # 0, AQ 2 0 effects are properly suppressed without the appearance of a new quark field in the Lagrangian-only p, n, and h. quark fields appear. Here, S is strangeness and Q is electric charge. The s...

BACKGROUND Changes in patient length of stay (the duration of 1 clinic visit) as a result of the introduction of an electronic patient file system forced an anesthesia department to change its outpatient clinic organization. In this study, we sought to demonstrate how the involvement of essential employees combined with mathematical techniques to support the decision-making process resulted in ...

Queuing theory has extensively studied the problem of estimating job execution times in steady state conditions both in the case of single queues and queuing networks. This paper discusses the use of closed Queuing Network (QN) models during finite time intervals to estimate the execution time of jobs submitted to a computer system. More specifically, the paper presents the Epochs algorithm tha...

Modeling and predicting age differences in driver mental workload and performance may help the invehicle system design to reduce or prevent information overloading on older drivers. However, few computational models exist that account for age differences in mental workload. We propose a new computational modeling approach to model workload and performance—a queuing network approach based on que...

We study the stochastic machine replenishment problem, which is a canonical special case of closed multiclass queuing systems in Markov decision theory. The problem models the scheduling of processor repairs in a multiprocessor system in which one repair can be made at a time and the goal is to maximize system utilization. We analyze the performance of a natural greedy index policy for this pro...

We show how agent-based simulation is used for analyzing different queuing strategies in the youth health care sector. The simulation model represents an authentic business case and is parameterized with actual market data. We discuss the differences between four queuing strategies which are based on push/pull allocation and centralized/decentralized queuing strategies. The model incorporates, ...

We present an analytical framework for providing Quality of Service (QoS) using queuing policies that achieves a given target distribution of packets in a network queue. Queuing policies are employed in an attempt to control the sending and receiving rates subject to the uncertainties in the environments. To a large extent, the stationary distribution of packets in the queue resulted from emplo...

................................................................................................................................................... 9 CHAPTER 1: INTRODUCTION .................................................................................................................. 11 1.1 BACKGROUND .............................................................................................

We present a new hybrid approach to performance management, combining disparate strengths of Reinforcment Learning (RL) with model-based (e.g. queuing-theoretic) approaches. Our method trains nonlinear function approximators using offline RL on data collected while a model-based policy controls the system. By training offline we avoid potentially poor performance in live online training, while ...

To improve customer satisfaction through prompting waiting time is a key way for a call center. The practice shows that the length of prompted waiting time has an important effect on customer satisfaction and the utility of the call center. Based on queuing theory we develop a maximum system utility optimization model with consideration of customer psychology behavior. First, we study the impac...