Results 41 to 50 of about 3,299,364 (288)

Asymptotics of the discrete log-concave maximum likelihood estimator and related applications

open access: yes, 2012
The assumption of log-concavity is a flexible and appealing nonparametric shape constraint in distribution modelling. In this work, we study the log-concave maximum likelihood estimator (MLE) of a probability mass function (pmf).
Balabdaoui, Fadoua   +3 more
core   +1 more source

Quasi maximum likelihood estimation and prediction in the compound Poisson ECOGARCH(1,1) model [PDF]

open access: yes, 2006
This paper deals with the problem of estimation and prediction in a compound Poisson ECOGARCH(1,1) model. For this we construct a quasi maximum likelihood estimator under the assumption that all jumps of the log-price process are observable.
Czado, Claudia, Haug, Stephan
core   +1 more source

Inpatient Food Insecurity and Pediatric Hematology Oncology Hospitalization Outcomes

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Children with cancer and blood disorders are at risk for food insecurity (FI). We aimed to describe the association of inpatient food insecurity (IFI) and hospitalization outcomes among patients admitted to the pediatric hematology oncology service. Of 325 caregivers screened for IFI, 60 (18.6%) screened positive.
Joanna M. Robles   +4 more
wiley   +1 more source

Physically consistent joint prediction of porosity and shale volume via core-calibrated deep learning in well-consolidated sandstones

open access: yesScientific Reports
In clay-sand reservoirs, shale volume affects porosity and permeability, with porosity governing storage capacity; these properties influence reserve and productivity predictions, which directly affect reservoir and economic assessments.
Weizhi Sun   +4 more
doaj   +1 more source

Analytic Expression for the Joint x and Q^2 Dependences of the Structure Functions of Deep Inelastic Scattering [PDF]

open access: yes, 2007
We obtain a good analytic fit to the joint Bjorken-x and Q^2 dependences of ZEUS data on the deep inelastic structure function F_2(x, Q^2). At fixed virtuality Q^2, as we showed previously, our expression is an expansion in powers of log (1/x) that ...
C. Adloff   +6 more
core   +2 more sources

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song   +15 more
wiley   +1 more source

Pore structure and gas content evaluation of coal-rock gas using well log data

open access: yesUnconventional Resources
The pore structure of coal significantly affects the adsorbability, desorption, and seepage behavior of coal-rock gas. This study firstly represents a comprehensive assessment of pore structure and fractal dimension characteristics for the low-medium ...
Fei Zhao   +7 more
doaj   +1 more source

Analysis of Psychological Well-Being from a Compositional Data Analysis Perspective: A New Approach

open access: yesBehavioral Sciences, 2023
Well-being is a widely studied construct in psychology. In 1989, Carol Ryff proposed the “Scale of Psychological Well-Being (SPWB)”, which has been validated in multiple languages.
María Cortés-Rodríguez   +4 more
doaj   +1 more source

Anomaly Detection in Log Data using Graph Databases and Machine Learning to Defend Advanced Persistent Threats

open access: yes, 2017
Advanced Persistent Threats (APTs) are a main impendence in cyber security of computer networks. In 2015, a successful breach remains undetected 146 days on average, reported by [Fi16].With our work we demonstrate a feasible and fast way to analyse real ...
Schindler, Timo
core   +1 more source

Feasibility and Preliminary Efficacy of Integrative Neuromuscular Training for Childhood Cancer Survivors: A Pilot Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survivors of childhood acute lymphoblastic leukemia (ALL) often exhibit early deficits in muscle and movement competence, which can compromise long‐term health. Integrative neuromuscular training (INT), a multifaceted approach combining fundamental movement activities with strength exercises, may help address these deficits during ...
Anna Maria Markarian   +7 more
wiley   +1 more source

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