Results 31 to 40 of about 65,792 (310)

Achievable Performance of Blind Policies in Heavy Traffic [PDF]

Mathematics of Operations Research, 2018
For a GI/GI/1 queue, we show that the average sojourn time under the (blind) Randomized Multilevel Feedback algorithm is no worse than that under the Shortest Remaining Processing Time algorithm times a logarithmic function of the system load. Moreover, it is verified that this bound is tight in heavy traffic, up to a constant multiplicative factor ...
N. Bansal (Nikhil), B. Kamphorst (Bart), A.P. Zwart (Bert)   +2 more
openaire   +4 more sources

Optimizing the Capacity Allocation of the Chinese Hierarchical Healthcare System under Heavy Traffic Conditions

Mathematics
In this study, we explore optimal service allocation within the Chinese hierarchical healthcare system with green channels, providing valuable insights for practitioners to understand how optimal service allocation is affected by various realistic ...
Linjia Wu, Kevin Han, Han Wu, Yu Shi, Canyao Liu   +4 more
doaj   +1 more source

Heavy-traffic limits for nearly deterministic queues [PDF]

ACM SIGMETRICS Performance Evaluation Review, 2010
We establish heavy-traffic limits for "nearly deterministic" queues, such as the G/D/n many-server queue. Waiting times before starting service in the G/D/n queue are equivalent to waiting times in an associated Gn/D/ 1 model, where the G
Sigman, Karl, Whitt, Ward
openaire   +4 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

The influence of heavy goods vehicle traffic on accidents on different types of Spanish interurban roads

, 2009
This paper illustrates a methodology developed to analyze the influence of traffic conditions, i.e. volume and composition on accidents on different types of interurban roads in Spain, by applying negative binomial models.
González Fernández, María Camino, Aparicio Izquierdo, Francisco, Gómez Méndez, Álvaro, Arenas Ramírez, Blanca del Valle   +3 more
core   +1 more source

Estimating passenger car equivalent of heavy vehicles at roundabout entry using micro-traffic simulation [PDF]

, 2019
Passenger Car Equivalent (PCE) is a unit used to represent the impact of a large vehicle on a road by expressing it as the number of equivalent passenger vehicles.
Easa, S, Pajecki, Robert, Ahmed, Faisal, Zheng, Xinyi, Qu, Xiaobo, Yang, Y, Easa, Said, Qu, X, Zheng, X, Pajecki, R, Yang, Yanqun, Ahmed, F   +11 more
core   +1 more source

How the Volume of Traffic Affected Air Quality During the Extreme Event of COVID-19 Lockdown in a Small City

Promet (Zagreb), 2022
The extreme traffic measures during the COVID-19 lockdown provided a unique opportunity to gain better insight into the relationship between traffic characteristics and NO2 concentrations in Maribor, a small Slovenian city.
Branka Trček, Rok Kamnik
doaj   +1 more source

On Queues in Heavy Traffic

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1962
SUMMARY We say that a single server queue is in “heavy traffic” when the traffic intensity p is less than, but very near, unity. Then the equilibrium waiting time w will be large, and it is proved that, under certain conditions, the distribution of (1 – p)w tends, as p tends to 1, to a negative exponential distribution.
openaire   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Respiratory symptoms in children living near busy roads and their relationship to vehicular traffic: results of an Italian multicenter study (SIDRIA 2). [PDF]

, 2009
BACKGROUND: Epidemiological studies have provided evidence that exposure to vehicular traffic increases the prevalence of respiratory symptoms and may exacerbate pre-existing asthma in children.
BUGIANI M., Ciccone, Giovannino, VIEGI G., G. Ciccone, Galassi, Claudia, Dell'orco, Valerio, Gabriele Giannella, Cadum, Ennio, GALASSI C., Migliore, Enrica, Chellini Elisabetta, CADUM E., A. Biggeri, Cadum E, Bisanti, Luigi, Galassi, C, Viegi Giovanni, Galassi C, MIGLIORE E., GIANNELLA G., N. Pearce, G. Galassi, Calabrese Roberto, Enrica Migliore, null null, Pearce N, R. Calabrese, Cadum Ennio, Armenio, Lucio, Viegi G, Luigi Bisanti, CHELLINI E., Berti Giovanna, Giannella G, FORASTIERE F., Chellini E, ARMENIO L., Ennio Cadum, Neil Pearce, Bugiani Massimiliano, Migliore Enrica, Giovannino Ciccone, SESTINI P., L. Armenio, Bisanti Luigi, Dell'orco V, Pearce, Neil, Armenio L, G. Giannella, Bugiani M, PISTELLI R., CORBO G., Berti G, Biggeri A, Forastiere, Francesco, Sestini Piersante, CICCONE G., P. Sestini, BERTI G., Calabrese R, Elisabetta Chellini, Pistelli, Riccardo, DELL'ORCO V., Lucio Armenio, Viegi, Giovanni, Roberto Calabrese, Giovanna Berti, Annibale Biggeri, Pearce Neil, Pistelli, R, Giovanni Viegi, Claudia Galassi, Dell'Orco Valerio, Pistelli R, BISANTI L., Corbo, Giuseppe, Luciana Indinnimeo, G. Berti, Piersante Sestini, Valerio Dell'Orco, Armenio Lucio, Giannella Gabriele, Corbo G, Corbo Giuseppe, Enea Bonci, BIGGERI A., PEARCE N., R. Pistelli, Sestini P, E. Migliore, E. Chellini, Biggeri, Annibale, Sestini, Piersante, Ciccone Giovannino, Forastiere Francesco, G. Corbo, Bisanti L, Chellini, Elisabetta, Pistelli Riccardo, CALABRESE R., V. Dell'orco, Corbo, Giuseppe Maria, Giannella, Gabriele, Bugiani, Massimiliano, L. Bisanti, Riccardo Pistelli, G. Viegi, SIDRIA-2 Collaborative Group, Giuseppe Corbo, Forastiere F, Biggeri Annibale, F. Forastiere, Ciccone G, Massimiliano Bugiani, Calabrese, Roberto, Calabrese, R, M. Bugiani, E. Cadum, Francesco Forastiere, Berti, Giovanna, Galassi Claudia, Migliore E   +121 more
core   +1 more source