Results 31 to 40 of about 194,680 (247)

Nonlinear Vibration of a Functionally Graded Nanobeam Based on the Nonlocal Strain Gradient Theory considering Thickness Effect

open access: yesAdvances in Civil Engineering, 2020
In this work, a nonlocal strain gradient beam model considering the thickness effect is developed to study the nonlinear vibration response of a functionally graded nanobeam.
Dang-Van Hieu   +2 more
doaj   +1 more source

Psychometric properties of Grit-S scale in university students: An application of the graded response model

open access: yesCogent Education, 2023
This study adopted an item response theory to evaluate the Grit-S scale and its dimensions (i.e., Consistency of interest [G-CI] and Perseverance of effort [G-PE]) among university students (N = 450) using two unidimensional Graded Response (GR ...
Amal Alhadabi
doaj   +1 more source

An application of item response theory to psychological test development

open access: yesPsicologia: Reflexão e Crítica, 2016
Item response theory (IRT) has become a popular methodological framework for modeling response data from assessments in education and health; however, its use is not widespread among psychologists. This paper aims to provide a didactic application of IRT
Cristian Zanon   +3 more
doaj   +1 more source

Numerical Investigation on Free Vibration Response of Bi-Directional Porous Functionally Graded Circular/Annular Plates [PDF]

open access: yesMechanics of Advanced Composite Structures, 2022
The article presents non-axisymmetric free vibration results of porous bi-directional functionally graded (BDFG) plates. The bi-directional grading index changes with the thickness (z-) and radial (r-) directions and porosity distributions are classified
Dilsukh Vasara   +3 more
doaj   +1 more source

A Joint Model for Graded Responses and Response Times

open access: yesPsychometrika
Abstract While the joint modeling of item responses and response times (RTs) has received considerable attention, most existing approaches remain limited to dichotomous items and are not applicable to assessments involving polytomous or mixed-format items.
Xinyu, Zhang   +3 more
openaire   +2 more sources

Evaluation of Buss-Perry aggression Questionnaire with item response theory (IRT) [PDF]

open access: yesPsihologija, 2012
The aim of this research was to examine the psychometric properties of the Buss-Perry Aggression Questionnaire on Serbian sample, using the IRT model for graded responses.
Dinić Bojana, Janičić Bojan
doaj   +1 more source

Modeling Response Time and Responses in Multidimensional Health Measurement

open access: yesFrontiers in Psychology, 2019
This study explored calibrating a large item bank for use in multidimensional health measurement with computerized adaptive testing, using both item responses and response time (RT) information.
Chun Wang, David J. Weiss, Shiyang Su
doaj   +1 more source

Central Nervous System Neuroblastoma, FOXR2‐Activated: A Pooled Analysis of Published Clinical Outcomes

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) neuroblastoma, FOXR2‐activated, is a recently recognized entity in the WHO CNS5 classification, defined by activation of the FOXR2 transcription factor and unique histopathological features. This review synthesizes available literature and pooled clinical data, providing insight into demographics ...
Sudarshawn Damodharan   +1 more
wiley   +1 more source

Personalized Zebrafish Models for Fusion‐Positive Pediatric Sarcomas

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Clinical sequencing efforts have revolutionized our approaches to categorizing pediatric cancers in real time. This has dramatically improved our ability to profile pediatric tumors, identify actionable vulnerabilities, and influence clinical care.
Lisa H. Hall   +2 more
wiley   +1 more source

Dynamic response of functionally graded plate under harmonic load with variable gradient parameters

open access: yesScience and Engineering of Composite Materials, 2022
This article used the strip element method to study the dynamics problems of the functionally graded plate with variable gradient parameters under the harmonic loads.
Tian Jianhui   +4 more
doaj   +1 more source

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