Results 1 to 10 of about 4,046,500 (265)

A Multidimensional Analysis of L2 Written Complexity: The Case of Sojourners

open access: yesTeanga: The Journal of the Irish Association for Applied Linguistics
This study investigated the developmental trajectories and the changing nature of the relationship between holistic proficiency, syntactic and lexical complexity in written L2 English.
Zeynep Köylü
doaj   +1 more source

Discrete-Time Retrial Queuing Systems with Last-Come-First-Served (LCFS) and First-Come-First-Served (FCFS) Disciplines: Negative Customer Impact and Stochastic Analysis

open access: yesMathematics
This paper examines a discrete-time retrial queuing system that incorporates negative customers, system breakdowns, and repairs. In this model, an arriving customer has the option to go directly to the server, pushing the currently served customer, if ...
Iván Atencia-Mckillop   +3 more
doaj   +1 more source

The Queueing Model MAP|PH|1|N with Feedback Operating in a Markovian Random Environment

open access: yesAustrian Journal of Statistics, 2016
Queueing systems with feedback are well suited for the description of message transmission and manufacturing processes where a repeated service is required. In the present paper we investigate a rather general single server queue with a Markovian Arrival
A.N. Dudin   +4 more
doaj   +1 more source

A Complex Model via Phase-Type Distributions to Study Random Telegraph Noise in Resistive Memories

open access: yesMathematics, 2021
A new stochastic process was developed by considering the internal performance of macro-states in which the sojourn time in each one is phase-type distributed depending on time.
Juan E. Ruiz-Castro   +3 more
doaj   +1 more source

A stochastic model for evaluating the progression of ductal carcinoma in situ breast cancer using Norwegian breast cancer screening program data

open access: yesInformatics in Medicine Unlocked
Background: Following widespread mammography screening for breast cancer, the incidence of ductal carcinoma in situ (DCIS) has increased sharply. However, the value of detecting DCIS by screening is uncertain as not all DCIS progresses to invasive breast
Xiaoxue Li   +3 more
doaj   +1 more source

Random -Policy Geo/G/1 Queue with Startup and Closedown Times

open access: yesJournal of Applied Mathematics, 2012
This study investigates a random -policy Geo/G/1 queue with startup and closedown times. is newly determined every time a new cycle begins. When random customers are accumulated, the server is immediately turned on but is temporarily unavailable to the
Tsung-Yin Wang
doaj   +1 more source

Design and analysis of AGV-based cross-docking operations using analytical models

open access: yesProduction and Manufacturing Research: An Open Access Journal, 2022
Cross-docking is important for logistics because it reduces inventory, lead-times, and shipments. However, dynamic imbalances between supply and demand usually results in some inventory being warehoused in cross-docks.
Xiao He, Vittaldas V. Prabhu
doaj   +1 more source

Sojourn Time in an Union of Intervals for Diffusions [PDF]

open access: yesMethodology and Computing in Applied Probability, 2012
We give a method for computing the iterated Laplace transform of the sojourn time in an union of intervals for linear diffusion processes. This random variable comes from a model occurring in biology concerning the clustering of membrane receptors. The way used hinges on solving differential equations.
openaire   +3 more sources

Analysis of a Discrete-Time Queueing Model with Disasters

open access: yesMathematics, 2021
Queueing models with disasters can be used to evaluate the impact of a breakdown or a system reset in a service facility. In this paper, we consider a discrete-time single-server queueing system with general independent arrivals and general independent ...
Mustafa Demircioglu   +2 more
doaj   +1 more source

Sojourn times in a processor sharing queue with multiple vacations

open access: yesQueueing systems, 2012
We study an M/G/1 processor sharing queue with multiple vacations. The server only takes a vacation when the system has become empty. If he finds the system still empty upon return, he takes another vacation, and so on.
U. Ayesta, O. Boxma, M. Verloop
semanticscholar   +1 more source

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