Results 21 to 30 of about 1,292,486 (242)

An innovative approach to partial discharge measurement and analysis in DC insulation systems during voltage transient and in steady state

High Voltage, 2021
Measuring partial discharges in DC insulation systems is an issue due to the lack of a reference relating the voltage waveform to the physics of discharge phenomena.
Gian Carlo Montanari, Riddhi Ghosh
doaj   +1 more source

A convex pseudo-likelihood framework for high dimensional partial correlation estimation with convergence guarantees [PDF]

, 2014
Sparse high dimensional graphical model selection is a topic of much interest in modern day statistics. A popular approach is to apply l1-penalties to either (1) parametric likelihoods, or, (2) regularized regression/pseudo-likelihoods, with the latter ...
Khare, Kshitij, Oh, Sang-Yun, Rajaratnam, Bala   +2 more
core   +2 more sources

A new tumor-associated antigen prognostic scoring system for spontaneous ruptured hepatocellular carcinoma after partial hepatectomy

Cancer Biology & Medicine, 2018
Objective: Spontaneous hepatocellular carcinoma (HCC) rupture can be fatal, and hepatic resection could achieve a favorable long-term survival among all strategies of tumor rupture.
Jingjing Wu, Peng Zhu, Zhanguo Zhang, Bixiang Zhang, Chang Shu, Lin Chen, Renjie Feng, Abdoul aziz Mba'nbo koumpa, Ganxun Li, Qianyun Ge   +9 more
doaj   +1 more source

ANALISIS SURVIVAL DENGAN COX PROPORTIONAL HAZARD PADA KASUS DEMAM TIFOID

Majalah Ilmiah Matematika dan Statistika, 2022
A common problem found in survival data is the presence of censored data. The length of hospitalization of Typhoid fever patients until declared cured is one of example of this data. Here, we use Cox regression model to analysis this data.
Nurul Azizah Baisaku, Jajang Jajang, Nunung Nurhayati   +2 more
doaj   +1 more source

A Goodness-of-Fit Test for Log-Linearity in Cox Proportional Hazards Model Under Monotonic Covariate Effects

Mathematics
The Cox proportional hazards (PH) model is widely used because it models the covariates to the hazard through a log-linear effect. However, exploring flexible effects becomes desirable within the Cox PH framework when only a monotonic relationship ...
Huan Chen, Chuan-Fa Tang
doaj   +1 more source

Partial mixture model for tight clustering of gene expression time-course

BMC Bioinformatics, 2008
Background Tight clustering arose recently from a desire to obtain tighter and potentially more informative clusters in gene expression studies. Scattered genes with relatively loose correlations should be excluded from the clusters.
Li Chang-Tsun, Yuan Yinyin, Wilson Roland   +2 more
doaj   +1 more source

Local partial-likelihood estimation for lifetime data

, 2006
This paper considers a proportional hazards model, which allows one to examine the extent to which covariates interact nonlinearly with an exposure variable, for analysis of lifetime data.
Fan, Jianqing, Lin, Huazhen, Zhou, Yong
core   +2 more sources

Partial trisomy 9: prenatal diagnosis and recurrence within same family

Clinical Case Reports, 2017
Key Clinical Message Trisomy 9 can be suspected and confirmed in the prenatal period since the 11–13.6 weeks of screening. In cases of partial trisomy 9, the diagnosis is important especially to counseling the couple due to the increased likelihood of ...
Jana López‐Félix, Leticia Flores‐Gallegos, Luz Garduño‐Zarazúa, Teresa Leis‐Márquez, Luz Juárez‐García, Ricardo Meléndez‐Hernández, Ernesto Castelazo‐Morales, Dora Mayén‐Molina   +7 more
doaj   +1 more source

Bayesian Inference in Auditing with Partial Prior Information Using Maximum Entropy Priors

Entropy, 2018
Problems in statistical auditing are usually one⁻sided. In fact, the main interest for auditors is to determine the quantiles of the total amount of error, and then to compare these quantiles with a given materiality fixed by the auditor, so that ...
María Martel-Escobar, Francisco-José Vázquez-Polo, Agustín Hernández-Bastida   +2 more
doaj   +1 more source

Optimal bispectrum constraints on single-field models of inflation [PDF]

, 2014
We use WMAP 9-year bispectrum data to constrain the free parameters of an 'effective field theory' describing fluctuations in single-field inflation. The Lagrangian of the theory contains a finite number of operators associated with unknown mass scales ...
A. Achucarro, A.A. Starobinsky, A.A. Starobinsky, C. Burrage, C. Cheung, C. Cheung, D. Babich, D. Baumann, D. Baumann, D. Seery, D. Seery, D.M. Regan, David Seery, Donough Regan, G. Hailu, Gemma J. Anderson, J. Byun, J. Elliston, J. Elliston, J. Martin, J.M. Maldacena, J.R. Fergusson, J.R. Fergusson, L. Senatore, L. Senatore, L.V. Keldysh, L.V. Keldysh, M. Dias, N. Arkani-Hamed, N. Bartolo, N. Bartolo, N. Bartolo, P. Creminelli, P. Creminelli, P. Creminelli, P.D. Meerburg, Planck collaboration, R. Bean, R.H. Ribeiro, S. Hotchkiss, T. Battefeld, WMAP collaboration, WMAP collaboration, X. Chen   +43 more
core   +2 more sources