Results 31 to 40 of about 47,678 (266)

Heavy-traffic limits for waiting times in many-server queues with abandonment

, 2009
We establish heavy-traffic stochastic-process limits for waiting times in many-server queues with customer abandonment. If the system is asymptotically critically loaded, as in the quality-and-efficiency-driven (QED) regime, then a bounding argument ...
Talreja, Rishi, Whitt, Ward
core   +1 more source

Global Markets and Market-Space Competition

Symphonya, 2003
Globalisation imposes transition in the spatial competition relationships, specifically the abandonment of a competition domain coinciding with specific physical or administrative contexts (a product category, a country, a region, a geographical area ...
Silvio M. Brondoni
doaj   +1 more source

Convergence to Equilibrium States for Fluid Models of Many-server Queues with Abandonment [PDF]

, 2013
Fluid models have become an important tool for the study of many-server queues with general service and patience time distributions. The equilibrium state of a fluid model has been revealed by Whitt (2006) and shown to yield reasonable approximations to ...
Long, Zhenghua, Zhang, Jiheng
core   +2 more sources

Fluid Models of Many-server Queues with Abandonment

, 2009
We study many-server queues with abandonment in which customers have general service and patience time distributions. The dynamics of the system are modeled using measure- valued processes, to keep track of the residual service and patience times of each
A. Mandelbaum, A. Mandelbaum, A. Mandelbaum, A. Puhalskii, A.A. Puhalskii, A.A. Puhalskii, D. Gamarnik, G. Pang, H. Kaspi, H.C. Gromoll, H.C. Gromoll, H.C. Gromoll, J. Zhang, J. Zhang, J.E. Reed, J.G. Dai, J.K. Hunter, Jiheng Zhang, K.L. Chung, L. Brown, O. Garnett, O. Kallenberg, P. Billingsley, P. Jelenković, R.M. Dudley, S. Asmussen, S. Halfin, S. Lang, S. Zeltyn, S.N. Ethier, W. Kang, W. Whitt, W. Whitt, W. Whitt   +33 more
core   +2 more sources

Dynamic Learning of Sequential Choice Bandit Problem under Marketing Fatigue

, 2019
Motivated by the observation that overexposure to unwanted marketing activities leads to customer dissatisfaction, we consider a setting where a platform offers a sequence of messages to its users and is penalized when users abandon the platform due to ...
Cao, Junyu, Sun, Wei
core   +1 more source

Enhanced Infection Resistance and Regenerative Healing of Titanium Implants via Peptide‐Loaded Biodegradable Coatings

Advanced Materials Technologies, EarlyView.
This study presents a new biodegradable coating for titanium implants using a natural antimicrobial peptide, caerin 1.9. Applied via solvent casting, the coating offers sustained antibacterial protection and promotes healing. Tested on 3D‐printed porous titanium scaffolds, it effectively prevented infection—including against resistant bacteria—while ...
Hejie Li, Tianfang Wang, Nicolas Soro, Guoying Ni, Meg Allom, D. İpek Kurtböke, Xiaosong Liu, Damon Kent   +7 more
wiley   +1 more source

Stationary Distribution Convergence of the Offered Waiting Processes for GI/GI/1+GI Queues in Heavy Traffic

, 2019
A result of Ward and Glynn (2005) asserts that the sequence of scaled offered waiting time processes of the $GI/GI/1+GI$ queue converges weakly to a reflected Ornstein-Uhlenbeck process (ROU) in the positive real line, as the traffic intensity approaches
Lee, Chihoon, Ward, Amy R., Ye, Heng-Qing   +2 more
core   +1 more source

Taylorism, targets and the pursuit of quantity and quality by call centre management [PDF]

, 2002
The paper locates the rise of the call centre within the context of the development of Taylorist methods and technological change in office work in general.
Bain, P.M., Gall, G., Mulvey, G., Taylor, P., Watson, A.C.   +4 more
core   +1 more source

Zinc Exposure Causes Disulfidptosis to Induce Miscarriage by Up‐Regulating GATA1/METTL1/SLC7A11 Axis

Advanced Science, EarlyView.
Zn exposure up‐regulates GATA1, promoting GATA1‐mediated METTL1 and SLC7A11 transcription. It also enhances METTL1‐mediated m7G modification on SLC7A11 mRNA, increasing SLC7A11 mRNA stability. Ultimately, Zn exposure up‐regulates SLC7A11 at both transcriptional and post‐transcriptional levels, causing disulfidptosis. Knockdown of murine Slc7a11, Gata1,
Wenxin Huang, Yi Sun, Yanxin Wang, Haijun Yan, Xiaoping Yue, Weidong Wu, Xueyu Chen, Jinfang Zhang, Yanbing Lin, Qiong Lei, Nan Ji, Shuaishuai Xing, Liqin Zeng, Qingzheng Kang, Depeng Zhao, Geng Guo, Huidong Zhang   +16 more
wiley   +1 more source

Bottom‐Up Coacervate‐Based Artificial Cells: Integrating Cellular Hallmarks into Complex Life‐Like Systems

Angewandte Chemie, EarlyView.
Current interest in artificial cell research underscores its potential to deepen our understanding of life's fundamental processes. This review highlights advances in bottom‐up coacervate‐based artificial cell engineering via combined integration of cellular hallmarks.
Arjan Hazegh Nikroo, Angshuman Das, Madelief A. M. Verwiel, Jan C. M. van Hest   +3 more
wiley   +2 more sources