Results 191 to 200 of about 1,430,072 (322)

Graphene oxide/exfoliated black phosphorus van der Waals heterojunctions for PEDOT:PSS‐free‐based organic light‐emitting diodes achieving excellent electroluminescence performance

open access: yesFlexMat, EarlyView.
A novel two‐dimensional heterojunction assembled from graphene oxide and exfoliated black phosphorus via van der Waals interactions is proposed to replace widely used poly(3,4‐ethylenedioxythiophene)‐polystyrene sulfonate for efficient hole injection layer in organic light‐emitting diodes, achieving impressive electroluminescence performance.
Yuefeng Li   +9 more
wiley   +1 more source

Beta Forecasting With Realized Beta Estimators and Machine Learning Algorithms

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT This paper applies machine learning algorithms to the modeling of realized betas for the purposes of forecasting stock systematic risk. Higher levels of beta forecast accuracy are demonstrated, relative to other studies in the literature. These improvements are also highly significant, both statistically and economically.
Bao Doan   +3 more
wiley   +1 more source

Testing the Social Investment Principle Around Childbirth: Little Evidence for Personality Maturation Before and After Becoming a Parent

open access: yesEuropean Journal of Personality, EarlyView., 2020
Abstract In line with the social investment principle, becoming a parent should lead to more mature behaviour and an increase in conscientiousness, agreeableness, and emotional stability. However, previous research provided mixed results that do not support this idea.
Eva Asselmann   +2 more
wiley   +1 more source

Swallowing‐Related Quality of Life After Carotid Body Tumor Resection: A Longitudinal Trajectory Analysis

open access: yesHead &Neck, EarlyView.
ABSTRACT Objectives To identify longitudinal swallowing‐related QoL trajectories after carotid body tumor (CBT) resection and explore associated characteristics. Methods A prospective study assessed swallowing‐related QoL using the MD Anderson Dysphagia Inventory at nine timepoints from preoperation to 12 months postdischarge.
Pan Chen   +8 more
wiley   +1 more source

Revisiting the Relationship Between Job Insecurity and Work Engagement: The Moderating Roles of Contract Type and Trait Negative Affectivity

open access: yesHuman Resource Development Quarterly, EarlyView.
ABSTRACT This study proposes and tests a curvilinear effect of job insecurity on work engagement, while also examining the moderating roles of employment contract type (permanent vs. temporary) and trait negative affectivity on this relationship. Utilizing two waves of time‐lagged data from a sample of 397 participants (273 permanent and 124 temporary ...
Hui‐Hsien Hsieh, Kuo‐Yang Kao
wiley   +1 more source

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