Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Queuing systems"”.
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Efficient Decentralized Multi-Agent Learning in Asymmetric Bipartite Queuing Systems
… decentralized multi-agent learning in bipartite queuing systems, a standard model for service systems. In particular, 𝑁 agents request service from 𝐾 servers in a fully decentralized way, i.e, by running the same algorithm without communication. Previous decentralized algorithms are restricted to …
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Analysis of email and phone queuing systems in a world-wide contact center network
Contact centers are operated by companies to answer customer inquiries via phone calls or email. Customers often equate the service they are provided while interacting with a contact center to the quality of a company's product offering. Therefore, a major concern is what service level the company …
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Approximate solutions for multi-server queuing systems with Erlangian service times and an application to air traffic management
… of certain M(t)/G(t)/n(t)/n(t) + q queueing systems. More specifically, we are interested in such systems under very general conditions such as time-varying demand and capacity, and high utilization, including occasional oversaturation. Conditions such as these cannot be addressed with …
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Management policies to handle multi queuing systems in a service oriented organization : a study of the Henri Bourassa driver licensing office in the City of Montreal
… of management policies to handle multi-tandem queuing systems characterized by stochastic demand is presented in this paper. This type of system is common in many high customer contact (HCC) service related organizations. An extensive study of the city of Montreal driver licensing office (Henri …
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Transient analysis of D(t)/M(t)/1 queuing system with applications to computing airport delays
… the first, a transient analysis of a D(t)/M(t)/1 queuing system is presented. The reason for focusing on such a system is that it may be useful in evaluating some of the benefits of a future Air Traffic Management (ATM) system, such as the Next Generation Air Transportation System (NGATS or …
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Queue with Random Arrivals and Exponential Service Times
… of simplified mathemtical models of such queuing systems. Initially, it was my aim to present a short but balanced survey of the literature; but I soon found myself unequal to the task. It is not so much the subject material as the inassessability of the literature which makes for the …
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Age of information and mobility
… It has become popular in the networking and queuing community, especially for studying delivery of real time status updates. In this thesis, we explore applications of AoI to mobile and adhoc networks. More specifically, we look at two problems - 1) Age optimal information collection and …
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Transmission scheduling for wireless and satellite systems
We study queuing systems with time-varying service rates, as a natural model of satellite and wireless communication systems. Packets arrive at a satellite to be transmitted to one of the sub-regions (channels) in a service area. The packets are stored in an on-board buffer and in a separate queue …
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Scheduling algorithms for arbitrary communication networks
… Standard methods for proving the stability of queuing systems fail us and hence we introduce a non-standard proof technique with potential wider applications.
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Operational effects of weigh-in-motion systems in weight enforcement
The effects of weigh-in-motion (WIM) systems on traffic operations and weight enforcement were compared and evaluated. The systems studied included high speed WIM, medium speed WIM and conventional static scales alone. The major measurements of effectiveness were traffic delay, queue, and the …
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Evaluating the impact of adopting 3d printing services on the retailers
… the Markov Decision Process, a framework for queuing systems is developed to examine the performance of various production/inventory strategies that optimize the system’s performance. Here, four strategies are developed: (i) providing only off-the-shelf products, (ii) providing only 3D printed …
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Dynamics and Phenomena in Stateful Multi-Agent Systems
… outcomes of complex processes in multi-agent systems. In many cases, such social systems are inherently algorithmic and strategic; in others, agents may act in simpler behavioral ways in response to some underlying randomness in their environment. In real-world settings, of course, both of …
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Prediction of waiting time for entities in independent and merged queues using Markov chain and machine learning techniques
… features in measuring the performance of systems; managers try to predict and minimize this factor. On the other hand, any system can have different customers. Thus, defining priorities can increase profitability and customer loyalty. Two models can emerge in these situations: the …
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Analysis, modeling and control of the airport departure process
… and the development of a stochastic and dynamic queuing model of the departure runway(s), based on the transient analysis of D(t)=Ek(t)=1 queuing systems. The parameters of the runway service process are estimated using operational data. Using the aircraft pushback schedule as input, the model …
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Sistemas de colas en tiempo discreto con entradas y servicios en bloque: estudio teórico y simulaciones comparativas
Los sistemas de colas se vienen estudiando desde inicios del siglo XX. Suele formarse una cola ante una instalación que proporciona determinado servicio. La teoría de colas pretende estudiar las fluctuaciones que se producen en estas situaciones: el número de clientes, el tiempo que debe esperar …