Results 21 to 30 of about 2,587 (144)
On the Discrete-Time Geo/G/1 Queue with Vacations in Random Environment
Discrete Dynamics in Nature and Society, 2016 A discrete-time Geo/G/1 queue with vacations in random environment is analyzed. Using the method of supplementary variable, we give the probability generating function (PGF) of the stationary queue length distribution at arbitrary epoch.
Jianjun Li, Liwei Liu
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British Educational Research Journal, EarlyView.Abstract This study examines the under‐theorized political role and identity of Chinese international students, who emerge as significant actors caught between U.S. soft power ambitions and rising geopolitical suspicion. Amid escalating U.S.‐China tensions, these students are forced to confront environments shaped by competing geopolitical discourses ...
Jing Yu
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International Journal of Cancer, EarlyView.Lung cancer is detected primarily through screening, incidental findings, or presentation with symptoms. In Japan, the impact of detection pathway on prognosis is poorly understood, limiting evaluation of screening effectiveness. The authors of the present study analyzed Japanese National Cancer Registry data, comparing clinical characteristics and net
Ryo Koto +7 more
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Analysis of Repairable Geo/G/1 Queues with Negative Customers
Journal of Applied Mathematics, 2014 We consider discrete-time Geo/G/1 queues with negative customers and a repairable server. The server is subject to failure due to a negative customer arrival. As soon as a negative customer arrives at a system, the server fails and one positive (ordinary)
Doo Ho Lee, Kilhwan Kim
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International Journal of Cancer, EarlyView.Uncertainty persists over whether the benefits of prostate‐specific antigen (PSA) screening outweigh harms from overdiagnosis, a key barrier to population‐wide adoption. Here, English male mortality rates were analyzed alongside long‐term data from the UK Cluster Randomized Trial of PSA Testing for Prostate Cancer (CAP) to estimate age‐specific ...
Adam R. Brentnall +5 more
wiley +1 more source
The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review
Journal of Field Robotics, EarlyView.ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton +4 more
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Commercial treaties and political transformation in Sulu and Southeast Asian littorals, c. 1830–1840
Asia‐Pacific Economic History Review, EarlyView.Abstract This article re‐examines an economic treaty concluded between Spain and the Sulu Sultanate in 1836. Analysing the Tausug (Jawi) and Spanish treaty versions alongside archival sources from Spain, the Philippines, and England, it traces the impact of indigenous agency beyond the formal signatories on economic and political transformations ...
Eleonora Poggio +2 more
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Sojourn Times in a Queueing System with Breakdowns and General Retrial Times
Mathematics, 2021 This paper centers on a discrete-time retrial queue where the server experiences breakdowns and repairs when arriving customers may opt to follow a discipline of a last-come, first-served (LCFS)-type or to join the orbit.
Ivan Atencia, José Luis Galán-García
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Curating the Unexpected: Stéphane Thidet's “Weeping Stones” Transformed During COVID‐19
Curator: The Museum Journal, EarlyView.ABSTRACT A monumental work by French artist Stéphane Thidet became the nexus for an unexpected interaction between an art installation and wildlife. “Weeping Stones,” which presents a desert‐like world, devoid of greenery, was featured in an exhibition we co‐curated at the Genia Schreiber University Gallery, Tel Aviv, Israel, in January 2020.
Tamar Mayer +3 more
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Queueing Systems with Random Volume Customers and a Sectorized Unlimited Memory Buffer
International Journal of Applied Mathematics and Computer Science, 2021 In the present paper, we concentrate on basic concepts connected with the theory of queueing systems with random volume customers and a sectorized unlimited memory buffer.
Tikhonenko Oleg +2 more
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