Research Output per year

## Personal profile

### Ancillary activities

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*Ancillary activities are updated daily*

## Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

- 2 Similar Profiles

Retrials
Mathematics

Servers
Engineering & Materials Science

Manpower Planning
Mathematics

Retrial Queue
Mathematics

Call Centres
Mathematics

M/G/1 Queue
Mathematics

Waiting Time Distribution
Mathematics

Gamma distribution
Mathematics

## Research Output 1996 2018

## A retrial queueing system with a variable number of active servers: Dynamic manpower planning in a call center

Nobel, R., 2018,*Queueing Theory and Network Applications - 13th International Conference, QTNA 2018, Proceedings.*Springer/Verlag, p. 33-47 15 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 10932 LNCS)

Research output: Chapter in Book / Report / Conference proceeding › Conference contribution › Academic › peer-review

Manpower Planning

Call Centres

Retrials

Queueing System

Servers

## Retrial queueing models in discrete time: a short survey of some late arrival models

Nobel, R. D., 2016, In : Annals of Operations Research. 247, 1, p. 37-63 27 p.Research output: Contribution to Journal › Article › Academic › peer-review

Open Access

Discrete-time

Queueing model

Generating function

Performance measures

Probability distribution

## Optimal control for an M^X/G/1/N+1 queue with two service modes

Ridder, A. A. N. & Nobel, R. D., 2014,*COMPUTATIONAL INTELLIGENCE, CYBER SECURITY AND COMPUTATIONAL MODELS.*Krishnan, G. S. S., Anita, R., Lakshmi, R. S., Kumar, M. S., Bonato, A. & Grana, M. (eds.). New Delhi: Springer, p. 47-59 13 p. (Advances in Intelligent Systems and Computing; no. 246)

Research output: Chapter in Book / Report / Conference proceeding › Chapter › Academic

Queue

Optimal control

Batch

Buffer

Queueing model

## A retrial queueing system with a variable number of active servers

Nobel, R. D., 2007,*Mathematical and Computational Models.*Nadarajan, R., Anitha, R. & Porkodi, C. (eds.). New Delhi, India: Narosa Publishing House

Research output: Chapter in Book / Report / Conference proceeding › Chapter › Academic

## Waiting-time probabilities in the M/G/1 retrial queue

Nobel, R. D. & Tijms, H. C., 2006, In : Statistica Neerlandica. Journal of the Netherlands Society for Statistics and Operations Research. 60, p. 73-79Research output: Contribution to Journal › Article › Academic

Retrial Queue

Retrials

M/G/1 Queue

Waiting Time Distribution

Gamma distribution