Zobrazeno 1 - 10
of 20
pro vyhledávání: '"P. V. Ushakumari"'
Autor:
P. V. Ushakumari
Publikováno v:
Journal of Interdisciplinary Mathematics. 23:127-143
We consider a two server stochastic inventory system under N-policy. Demand for the items occurs one at a time according to a Poisson process. Server1 is always available and Server2 is activated o...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb6922480f5c55a9a76b7598a8fc2ff6
https://doi.org/10.1080/09720502.2020.1721707
https://doi.org/10.1080/09720502.2020.1721707
Publikováno v:
2021 International Conference on Innovative Practices in Technology and Management (ICIPTM).
Waiting time in a queue is a common problem in all the service disciplines and some people may reluctant to join a queue due to long wait. These phenomena can be seen in the case of a railway ticket service also. A well-drafted model is needed for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::041d903e60e49f78a7d623c427fd1b62
https://doi.org/10.1109/iciptm52218.2021.9388368
https://doi.org/10.1109/iciptm52218.2021.9388368
Publikováno v:
IEEE Sensors Journal. 17:6006-6018
Real-time wireless sensor networks are an emerging technology for continuous environmental monitoring. But real-world deployments are constrained by resources, such as power, memory, and processing capabilities. In this paper, we discuss a set of tec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44e2a1b227f3c980fad00eca945e2fda
https://doi.org/10.1109/jsen.2017.2730225
https://doi.org/10.1109/jsen.2017.2730225
Autor:
P. V. Ushakumari
Publikováno v:
International Journal of Mathematics in Operational Research. 18:528
In this work, we study a two-server k-out-of-n: G repairable system with identical components. Lifetimes of components follow an exponential distribution with parameter λ. For the repair of failed components, we consider two servers called server1 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::000e5497bbdf21d416af32cffddc1d85
https://doi.org/10.1504/ijmor.2021.114209
https://doi.org/10.1504/ijmor.2021.114209
Publikováno v:
International Journal of Vehicle Information and Communication Systems. 5:26
Ocean network is a heterogeneous wireless network of fishing vessels at sea to provide internet over sea. The types of messages exchanged between fishing vessels include emergency data, normal data, voice and video messages. As the connectivity is in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aac54beacaa76073e0b86240bd48fff3
https://doi.org/10.1504/ijvics.2020.107180
https://doi.org/10.1504/ijvics.2020.107180
Autor:
P. V. Ushakumari
Publikováno v:
Journal of Applied Mathematics and Stochastic Analysis. 2006:1-22
We consider an (s,S) inventory system with random lead time and repeated demands of unsatisfied demands from the orbit. Whenever the inventory level falls to the level s, an order is placed to bring the level to S. The quantity ordered is M=S−s. De
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d129e8a1714d5c0184ede188b0d0901
https://doi.org/10.1155/jamsa/2006/81508
https://doi.org/10.1155/jamsa/2006/81508
Publikováno v:
Performance Evaluation. 57:221-234
We consider a k-out-of-n system with repair under the max(N, T) policy. Under this policy, the repair facility is activated for repair of failed units whenever the maximum of an exponentially distributed time duration T and the sum of N (1 ≤ N ≤
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ac53fc883ff1e40f3ff2727692d1e0c
https://doi.org/10.1016/j.peva.2003.10.006
https://doi.org/10.1016/j.peva.2003.10.006
Publikováno v:
Stochastic Analysis and Applications. 20:357-374
In this paper we consider the GI/M/1/1 retrial queue with finite number of retrials to each orbital customer and a finite number of orbits. The interarrival times from outside the system have a general distribution. The sojourn time of a unit in an o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00d3ddd37a24d9e4f15724243b9bf050
https://doi.org/10.1081/sap-120003439
https://doi.org/10.1081/sap-120003439
Publikováno v:
Journal of Applied Mathematics and Stochastic Analysis. 14:361-380
In this paper we study a k-out-of-n reliability system in which a single unreliable server maintains n identical components. The reliability system is studied under the (N,T) policy. An idle server takes a vacation for a random amount of time T and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::414e96fe4e770b8b3c39299025a37b3d
https://doi.org/10.1155/s1048953301000326
https://doi.org/10.1155/s1048953301000326
Publikováno v:
Mathematical and Computer Modelling. 31:99-108
In this note, we study a Markovian queueing system with accessible batches for service, but units depart individually. This system generalizes the M/M/C, bulk service, and accessible batch queueing systems. We compute the system size probabilities in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a2a9ff6b734ef1d09b96d5beb42c5a8
https://doi.org/10.1016/s0895-7177(99)00226-5
https://doi.org/10.1016/s0895-7177(99)00226-5