Results 11 to 20 of about 1,126,182 (144)

Measurement and Evaluation [PDF]

open access: yesFundamentals of Air Cleaning Technology and Its Application in Cleanrooms, 2013
Under the guidance of the sampling theory, correct sampling procedures are taken, after which measurement can be performed with a variety of methods to determine the particle size, number, and distribution. After scientific evaluation is made on the measurement results, the correct conclusion can be finalized.
David A. Erlandson   +2 more
europepmc   +4 more sources

Incorporating test-taking engagement into the item selection algorithm in low-stakes computerized adaptive tests

open access: yesLarge-scale Assessments in Education, 2023
In low-stakes assessment settings, students’ performance is not only influenced by students’ ability level but also their test-taking engagement. In computerized adaptive tests (CATs), disengaged responses (e.g., rapid guesses) that fail to reflect ...
Guher Gorgun, Okan Bulut
doaj   +1 more source

A structural equation modeling approach for examining position effects in large-scale assessments

open access: yesLarge-scale Assessments in Education, 2017
Position effects may occur in both paper–pencil tests and computerized assessments when examinees respond to the same test items located in different positions on the test.
Okan Bulut, Qi Quo, Mark J. Gierl
doaj   +1 more source

Estimating Explanatory Extensions of Dichotomous and Polytomous Rasch Models: The eirm Package in R

open access: yesPsych, 2021
Explanatory item response modeling (EIRM) enables researchers and practitioners to incorporate item and person properties into item response theory (IRT) models.
Okan Bulut   +2 more
doaj   +1 more source

Indicators Affecting the International Outlook of Universities

open access: yesSAGE Open, 2022
In this study, the variables that affect the International Outlook of Universities are examined. The international outlook was treated as a dependent variable.
Tülin Otbiçer Acar
doaj   +1 more source

Extracting a Connected River Network from DEM by Incorporating Surface River Occurrence Data and Sentinel-2 Imagery in the Danjiangkou Reservoir Area

open access: yesRemote Sensing, 2023
Accurate extraction of river network from the Digital Elevation Model (DEM) is a significant content in the application of a distributed hydrological model.
Lijie Lu   +6 more
doaj   +1 more source

An Improved QAA-Based Method for Monitoring Water Clarity of Honghu Lake Using Landsat TM, ETM+ and OLI Data

open access: yesRemote Sensing, 2022
Secchi disk depth (ZSD) is used to quantify water clarity as an important water-quality parameter, and one of the most used mechanistic models for ZSD is the quasi-analytical algorithm (QAA), of which the latest version is QAA_v6. There are two models in
Miaomiao Chen   +6 more
doaj   +1 more source

Object-Based Wetland Vegetation Classification Using Multi-Feature Selection of Unoccupied Aerial Vehicle RGB Imagery

open access: yesRemote Sensing, 2021
Wetland vegetation is an important component of wetland ecosystems and plays a crucial role in the ecological functions of wetland environments.
Rui Zhou   +5 more
doaj   +1 more source

Rapid assessment of communication consistency: sentiment analysis of public health briefings during the COVID-19 pandemic

open access: yesAIMS Public Health, 2022
Background: A key component of the initial public health response to the COVID-19 pandemic involved the use of mass media briefings led by public health officials to communicate updates during a time of great uncertainty and rapidly changing information.
Okan Bulut, Cheryl N. Poth
doaj   +1 more source

The Hierarchical Rater Thresholds Model for Multiple Raters and Multiple Items

open access: yesOpen Education Studies, 2021
In educational measurement, various methods have been proposed to infer student proficiency from the ratings of multiple items (e.g., essays) by multiple raters. However, suitable models quickly become numerically demanding or even unfeasible as separate
Molenaar Dylan   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy