Results 51 to 60 of about 9,050 (237)

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

Analysis of an N–Policy GI/M/1 Queue in a Multi–Phase Service Environmentwith Disasters

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2018
This paper investigates an N-policy GI/M/1 queue in a multi-phase service environment with disasters, where the system tends to suffer from disastrous failures while it is in operative service environments, making all present customers leave the system ...
Jiang Tao   +3 more
doaj   +1 more source

Discrete Time Hybrid Semi-Markov Models in Manpower Planning

open access: yesMathematics, 2021
Discrete time Markov models are used in a wide variety of social sciences. However, these models possess the memoryless property, which makes them less suitable for certain applications.
Brecht Verbeken, Marie-Anne Guerry
doaj   +1 more source

Between soft power and suspicion: Chinese international students as diasporic actors in U.S.‐China geopolitical tensions

open access: yesBritish 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
wiley   +1 more source

Wafer Sojourn Time Fluctuation Caused by Activity Time Variation in DualArm Cluster Tools

open access: yes, 2009
With wafer residency time constraints, wafer sojourn time in a processing module should be carefully controlled such that it is in a permissive range.
Zhou, Meng Chu   +3 more
core   +1 more source

Evaluating the Impact of Age on Prostate Cancer Overdiagnosis Using Long‐Term Follow‐Up From the CAP Randomised Trial

open access: yesInternational 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

A note on the catch-up time method for estimating lead or sojourn time in prostate cancer screening. [PDF]

open access: yesStat Med, 2013
Models of cancer screening assume that cancers are detectable by screening before being diagnosed clinically through symptoms. The duration of this preclinical phase is called sojourn time, and it determines how much diagnosis might be advanced in time ...
Draisma G, van Rosmalen J.
europepmc   +2 more sources

Comparison of multi-state Markov models for cancer progression with different procedures for parameters estimation. An application to breast cancer

open access: yesEpidemiology, Biostatistics and Public Health, 2022
Background: the knowledge of sojourn time (the duration of the preclinical screen-detectable period) and screening test sensitivity is crucial for understanding the disease progression and the effectiveness of screening programmes.
Leonardo Ventura   +5 more
doaj  

Multistate Markov model application for blood pressure transition among the Chinese elderly population: a quantitative longitudinal study

open access: yesBMJ Open, 2022
Objective To explore the transitions of different blood pressure states based on a multistate Markov model among the Chinese elderly population.Setting A community health centre in Xiamen, China.Participants 1833 elderly Chinese people.Methods A ...
Bin Zhao   +6 more
doaj   +1 more source

Ground Vehicle Tracking Using Context-Based Sojourn Time Dependent Markov Model and Pseudo-Measurement

open access: yesIEEE Access, 2020
Tracking maneuvering vehicles in complex dynamic environment is a challenging problem for advanced driver assistance system and autonomous driving systems. Most conventional vehicle tracking algorithms can not model the vehicle dynamic exactly because of
Zhen Tian, Ming Cen, Yinguo Li, Hao Zhu
doaj   +1 more source

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