Erlang loss systems with shortest idle server first service discipline: Maintenance considerations

Madadi, Mahboubeh; Heydari, Mohammadhossein; Maillart, Lisa M.; Cassady, Richard; Zhang, Shengfan

doi:10.1080/24725854.2022.2149906

Cited by 2 publications

(1 citation statement)

References 44 publications

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“…In addition to these, there are various other queue routing strategies that are introduced in the analytics literature such as "Shortest Idle Server First" (Shortest Idle Server First (SISF)) [145] and "Minimum Expected Delay Faster Server First" [205]. However, we do not include those in this study due to their irrelevance to our aim.…”

Section: Queue Routing Strategiesmentioning

confidence: 99%

Operations research and analytics methods to improve equitable access to public services

Kaya

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brother, whose love and guidance are with me in whatever I pursue. Your unwavering support, patience, and care have made me the person I am today (and the Russian classics you made me read growing up).Last but not least, I want to express my deepest appreciation to my loving and supportive partner, Carl, who has always been there for the best and the worst to provide his unending inspiration. There were times knowing that he believed in me was my only motivation to keep trying. v TABLE OF CONTENTS ACKNOWLEDGMENTS iii LIST OF TABLES vii LIST OF FIGURES ix

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Section: Queue Routing Strategiesmentioning

confidence: 99%

Operations research and analytics methods to improve equitable access to public services

Kaya

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Software Portfolio Optimization: Access Rejection versus Underutilization

2023

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Several types of network and non-network licenses control users’ access to software. The literature on efficient selection of software licenses has mostly addressed queuing models intended to estimate the probability of denial of access for a user. Under that approach, however, the lower one sets the rejection probability, the greater the likelihood that licenses will be underused. We follow the literature in describing demand for software access with an Erlang queuing model and present a general integer program for optimizing mixed-license software portfolios under constraints on two types of risk: access rejection and license underutilization. The program, in which the number of licenses of each type is a decision variable, minimizes the total licensing cost while satisfying constraints on access denial and license underutilization. We evaluate and illustrate the ability of an efficient enumerative algorithm to solve the common problem of selecting an appropriate mix of floating and network named user licenses. Our case-study analysis indicates the potential for reducing the cost of licensing while also limiting problems associated with lack of access and underutilization.

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Erlang loss systems with shortest idle server first service discipline: Maintenance considerations

Cited by 2 publications

References 44 publications

Operations research and analytics methods to improve equitable access to public services

Operations research and analytics methods to improve equitable access to public services

Software Portfolio Optimization: Access Rejection versus Underutilization

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