Results 41 to 50 of about 2,625,460 (280)

A Systematic Review on Attachment and Sleep at Preschool Age

open access: yesChildren, 2021
Sleep is a biological process that impacts nearly every domain of a child’s life. Sleep-wake regulation influences and it is highly influenced by developmental variables related to parent-child relationships, such as attachment.
Catarina Perpétuo   +2 more
doaj   +1 more source

An Ordinal factor analysis of requirements and challenges of information and communication technology system to train private agricultural insurance brokers in Iran [PDF]

open access: yes, 2009
This study was conducted to identify challenges and requirements of an information and communication technology (ICT) system to train brokers. Using the ordinal factor analysis, the challenges and requirements have been classified into six factors ...
Hosseini, Seyed Jamal Farajollah   +2 more
core  

Pixel Crosstalk and Correlation with Modulation Transfer Function of CMOS Image Sensor [PDF]

open access: yes, 2005
The Modulation Transfer Function is a common metric used to quantify image quality but inter-pixel crosstalk analysis is also of interest. Because of an important number of parameters influencing MTF, its analytical calculation and crosstalk ...
Estribeau, Magali, Magnan, Pierre
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Presidential Support in a Context of Crisis and Recovery in Peru, 1985-2008 Aprobación presidencial en tiempos de crisis y de recuperación económica en el Perú, 1985-2008

open access: yesJournal of Politics in Latin America, 2010
Largely due to the theoretical weight given to the role of economic crisis, the existing literature on presidential approval in Peru offers a variety of competing explanations about the factors that account for presidential support.
Moisés E. Arce, Julio F. Carrión
doaj  

Genetic Algorithm for Orthogonal Designs [PDF]

open access: yes, 2006
We show how to use Simple Genetic Algorithm to produce Hadamard matrices of large orders, from teh full orthogonal design or oder 16 with 9 variables, OD(16; 1, 1, 2, 2, 2, 2, 2, 2, 2).
Cousineau, Jason   +2 more
core   +1 more source

Blackhouse\u27s Kierkegaard: A single life (Book Review)

open access: yes, 2017
Backhouse, S. (2016). Kierkegaard: A single life. Grand Rapids: Zondervan. 304 pp. $24.99.
Vargas, Kristin
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

open access: yesAdvanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong   +16 more
wiley   +1 more source

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

open access: yesAdvanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan   +16 more
wiley   +1 more source

The Verdict Is In: The Impact of Crime on Public Trust in Central American Justice Systems El impacto de delincuencia sobre la confianza pública en el sistema de justicia en Centroamérica

open access: yesJournal of Politics in Latin America, 2010
Over the past two decades, the countries of Central America have confronted soaring crime rates. Justice systems of dubious quality provide thin shields against this crime crisis, despite substantial international and domestic investment in justice ...
Mary Fran T. Malone
doaj  

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