Results 11 to 20 of about 6,466,077 (225)

Systematic errors in the maximum-likelihood regression of Poisson count data: introducing the overdispersed χ2 distribution [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2023
This paper presents a new method to estimate systematic errors in the maximum-likelihood regression of count data. The method is applicable in particular to X-ray spectra in situations where the Poisson log-likelihood, or the Cash goodness-of-fit ...
M. Bonamente
semanticscholar   +1 more source

Nonparametric modeling of cosmological database on the χ2 distribution [PDF]

open access: yesPhysical Review D, 2021
In the $\Lambda$CDM model, cosmological observations from the late and recent universe reveal a puzzling $\sim 4.5\sigma$ tension in the current rate of universe expansion.
Maryam Vazirnia, A. Mehrabi
semanticscholar   +1 more source

Study on the distribution of ABO blood group in patients with pancreatic cancer

open access: yesZhongguo shuxue zazhi, 2023
Objective To investigate whether there is a correlation between the differences in ABO blood group distribution in patients with pancreatic cancer, and to evaluate the relative risk.
Xiaoliang YANG   +6 more
doaj   +1 more source

A gap in the double white dwarf separation distribution caused by the common-envelope evolution: astrometric evidence from Gaia [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2022
The trajectory of the center of light of an unresolved binary is different from that of its center of mass. Binary-induced stellar centroid wobbling can therefore be detected as an excess in the goodness-of-fit of the single-star astrometric model.
V. Korol, V. Belokurov, S. Toonen
semanticscholar   +1 more source

Regional and epidemiological characteristics of tuberculosis and treatment outcomes in West China

open access: yesFrontiers in Public Health, 2023
ObjectiveTo understand the prevalence and treatment outcome of tuberculosis in a typically regional County from 2016 to 2021, so as to provide reference and basis for the prevention and treatment of tuberculosis in this area.MethodsDescriptive ...
Qiaolan Wang   +3 more
doaj   +1 more source

Distribution Features of Skeletal Metastases: A Comparative Study between Pulmonary and Prostate Cancers. [PDF]

open access: yesPLoS ONE, 2015
Bone scintigraphies are widely applied for detecting bone metastases. The aim of this study was to investigate distribution features of bone metastases in pulmonary and prostate cancers.
Changyin Wang, Ying Shen, Shaobo Zhu
doaj   +1 more source

Trends in CD4+ Cell Counts, Viral Load, Treatment, Testing History, and Sociodemographic Characteristics of Newly Diagnosed HIV Patients in Osaka, Japan, From 2003 through 2017: A Descriptive Study

open access: yesJournal of Epidemiology, 2023
Background: The CD4 cell count of patients during diagnosis and distribution of CD4 cell counts in the patient population are important to understand infection-diagnosis interval and incidence rate of human immunodeficiency virus (HIV) infection ...
Fumiko Kagiura   +9 more
doaj   +1 more source

Superstatistical generalisations of Wishart-Laguerre ensembles of random matrices [PDF]

open access: yes, 2008
Using Beck and Cohen's superstatistics, we introduce in a systematic way a family of generalized Wishart–Laguerre ensembles of random matrices with Dyson index β = 1, 2 and 4. The entries of the data matrix are Gaussian random variables whose variances η
Abul-Magd, AY, Akemann, G, Vivo, P
core   +2 more sources

Confidence Interval Estimation for Intraclass Correlation Coefficient Under Unequal Family Sizes [PDF]

open access: yes, 2009
Confidence intervals (based on the χ2 -distribution and (Z) standard normal distribution) for the intraclass correlation coefficient under unequal family sizes based on a single multinormal sample have been proposed. It has been found that the confidence
Bhandary, Madhusudan, Fujiwara, Koji
core   +2 more sources

CT location distribution of subarachnoid hemorrhage and its value in intracranial aneurysm detection

open access: yesChinese Journal of Contemporary Neurology and Neurosurgery, 2022
Objective To compare the CT location distribution of subarachnoid hemorrhage (SAH) caused by aneurysms at different locations, and to explore the value of CT hemorrhage distribution for improving the detection of aneurysms in CTA in diagnosing aneurysm ...
WANG Zhi-ping, ZHANG Yi-sen, QU Li-ying
doaj   +1 more source

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