Results 111 to 120 of about 170,681 (274)

Dose and combined effects of DIF-1 and DIF-2 on chemotaxis in HM1030 (dmtA-).

open access: yes, 2013
(A) Effects of DIF concentrations on chemotaxis. HM1030 cells starved for 6 h were spotted on PB agar containing 3 mM caffeine plus various concentrations of DIF-1 (top) or DIF-2 (middle and bottom) and assayed for chemotaxis toward the doses of cAMP ...
Yuzuru Kubohara (371026)   +1 more
core   +1 more source

Manipulating the Difference between the Day and Night Temperatures Can Enhance the Quality of Astragalus membranaceus and Codonopsis lanceolata Plug Seedlings

open access: yesAgronomy, 2019
Astragalus membranaceus Bunge and Codonopsis lanceolata Benth. et Hook. f. are two famous medical species in Korea, China, and Japan, mainly used for treating diseases including cancer, obesity, and inflammation.
Ya Liu, Xiuxia Ren, Byoung Ryong Jeong
doaj   +1 more source

Using multilabel classification neural network to detect intersectional DIF with small sample sizes

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract This study introduces InterDIFNet, a multilabel classification neural network for detecting intersectional differential item functioning (DIF) in educational and psychological assessments, with a focus on small sample sizes. Unlike traditional marginal DIF methods, which often fail to capture the effects of intersecting identities and require ...
Yale Quan, Chun Wang
wiley   +1 more source

Composite marginal likelihood estimation of higher‐order diagnostic classification models under high dimensionality

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Although full‐information maximum likelihood (FIML) estimation is widely used for diagnostic classification models (DCMs), its computational efficiency deteriorates sharply in high‐dimensional settings. This scalability challenge is increasingly critical as DCMs are applied to large‐scale assessments, psychological testing and longitudinal ...
Minho Lee, Yon Soo Suh
wiley   +1 more source

Influence of DIF on the Growth of "K-Y cross" Cabbage (Brassica oleracea L. var. capitata L.) Seedlings

open access: yes, 2014
DIF處理對甘藍穴盤苗株高與莖長的影響反應十分相似,0DIF和-DIF處理之株高及莖長均顯著小於+DIF處理。在莖徑方面,也以+DIF處理之莖徑較粗,處理5天者為3.08mm及10天者為3.10mm。當DIF由正值遞減至負值時,葉面積、地上部乾重及地下部乾重均呈現減少的趨勢。定植後的0-7天,以-DIF處理10天之苗株在定植後平均相對生長速率上,有較差的表象,如:株高0.002cm/day、葉面積6.58cm2/day、地上部乾重27.3mg/day及地下部乾重5.52mg/day,但在定植後7 ...
Woo-Nang Chang   +5 more
core  

Establishing Shape Correspondences: A Survey

open access: yesComputer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

DIF in Spanish and Mathematics from Costa Rica’s national tests in reported students with ADHD

open access: yesActualidades Investigativas en Educación, 2017
The detection of differential item functioning (DIF) is fundamental to ensure instruments’ invariance, and, therefore, a better estimate of the construct being measured across the different groups of examinees. The purpose of this research was to provide
Eiliana Montero Rojas   +1 more
doaj   +1 more source

In vivo differentiation of scarring alopecia using line‐field confocal optical coherence tomography: a pilot study

open access: yesJDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background and Objectives: Diagnosing cicatricial alopecia is challenging. Even with histology, a definitive diagnosis cannot always be made. Line‐field confocal optical coherence tomography (LC‐OCT), a non‐invasive imaging method with high resolution used in vivo, has proven helpful in diagnosing scarring alopecia.
Marie‐Christine Nutz   +5 more
wiley   +1 more source

Systematic DIF review

open access: yes, 2018
Systematic review of empirical DIF literature - Flore, Oberski & ...
Paulette Flore
core   +1 more source

Identification of items that show nonuniform DIF

open access: yes, 1996
This study compared three procedures-the Mantel- Haenszel (MH), the simultaneous item bias (SIB), and the logistic regression (LR) procedures-with respect to their Type I error rates and power to detect nonuniform differential item functioning (DIF).
Narayanan, Pankaja, Swaminathan, H.
core   +1 more source

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