Results 1 to 10 of about 43,120 (100)

Asymptotically optimal idling in the GI/GI/N+GI queue [PDF]

open access: yesOperations Research Letters, 2022
We formulate a control problem for a GI/GI/N+GI queue, whose objective is to trade off the long-run average operational costs (i.e., abandonment costs and holding costs) with server utilization costs. To solve the control problem, we consider an asymptotic regime in which the arrival rate and the number of servers grow large.
Yueyang Zhong   +2 more
openaire   +2 more sources

GIS AND DISEASE [PDF]

open access: yesAnnual Review of Public Health, 2002
▪ Abstract  Geographic information systems (GIS) and related technologies like remote sensing are increasingly used to analyze the geography of disease, specifically the relationships between pathological factors (causative agents, vectors and hosts, people) and their geographical environments.
openaire   +3 more sources

Perfect sampling of GI/GI/c queues [PDF]

open access: yesQueueing Systems, 2018
We introduce the first class of perfect sampling algorithms for the steady-state distribution of multi-server queues with general interarrival time and service time distributions. Our algorithm is built on the classical dominated coupling from the past protocol. In particular, we use a coupled multi-server vacation system as the upper bound process and
Jose Blanchet, Jing Dong, Yanan Pei
openaire   +3 more sources

Nanomedicine in GI

open access: yesAmerican Journal of Physiology-Gastrointestinal and Liver Physiology, 2011
Recent advances in nanotechnology offer new hope for disease detection, prevention, and treatment. Nanomedicine is a rapidly evolving field wherein targeted therapeutic approaches using nanotechnology based on the pathophysiology of gastrointestinal diseases are being developed.
Laroui, Hamed   +6 more
openaire   +6 more sources

The different identities of GIS and GIS diffusion [PDF]

open access: yesInternational Journal of Geographical Information Science, 1999
GIS managers traditionally consider three perspectives of the nature of GIS when introducing GIS into an organization. When the GIS is developed to address focused and well de® ned problems of the organization, these perspect- ives adequatelydescribethe changingidentities of GISin thestudyof itsdiA usion.
Ian Williamson, Tai O. Chan
openaire   +2 more sources

On the Distribution of AoI for the GI/GI/1/1 and GI/GI/1/2 Systems: Exact Expressions and Bounds [PDF]

open access: yesIEEE INFOCOM 2019 - IEEE Conference on Computer Communications, 2019
Since Age of Information (AoI) has been proposed as a metric that quantifies the freshness of information updates in a communication system, there has been a constant effort in understanding and optimizing different statistics of the AoI process for classical queueing systems.
Jaya Prakash Champati   +2 more
openaire   +3 more sources

GIS and Computational Notebooks [PDF]

open access: yesSSRN Electronic Journal, 2021
Researchers and practitioners across many disciplines have recently adopted computational notebooks to develop, document, and share their scientific workflows - and the GIS community is no exception. This chapter introduces computational notebooks in the geographical context.
Geoff Boeing, Dani Arribas-Bel
openaire   +5 more sources

Historical GIS

open access: yes, 2022
The historical GIS is, without any doubt, a powerful means of communication of historical phenomena for the public and also of collecting georeferenceable historical source through crowdsourcing activities, but the complexity of the data model underlying a GIS can also distance the public from understanding the complexity of the phenomena themselves ...
Paolo Mogorovich, Enrica Salvatori
openaire   +2 more sources

GIS and Types of GIS Education Programs

open access: yesProcedia - Social and Behavioral Sciences, 2012
AbstractRecent developments in mapping technologies that forms data for planning and decision mechanism, makes it necessary to use these technologies by forming “clever maps” through geographical information systems (GIS). Up to now, the concept of GIS couldn’t be understood both in educational institutions and at private sector.
openaire   +2 more sources

The limits of GIS: Towards a GIS of place

open access: yesTransactions in GIS, 2018
AbstractIn this article we reflect back on our decade‐long collaboration on the geographies of the Holocaust to argue for a GIS of place. Our previous work on ghettoization in Budapest and on the spatio‐temporal patterns of Jewish persecution in Italy had a marked spatial dimension, both in the research questions we set out to answer and the methods we
Alberto Giordano, Tim Cole
openaire   +5 more sources

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