Results 101 to 110 of about 455,232 (324)

Genetic Confirmations of Dwarf Lemurs Across Madagascar Highlights Complex Biogeographic Patterns 马达加斯加全境鼠狐猴的遗传确认揭示了复杂的生物地理模式

open access: yesIntegrative Conservation, EarlyView.
Using a diagnostic mitochondrial marker gene, we document the presence of furry‐eared dwarf lemurs, a species known from Madagascar's eastern montane rainforests, in several forest fragments across the island's central highlands. These findings raise new questions about when this species colonized these sites, how they tolerate these changing and ...
Marina B. Blanco   +27 more
wiley   +1 more source

The Adoption and Enforcement of a Technological Regime: The Case of the first IT Regime [PDF]

open access: yes
In this paper we explore the process of adoption and enforcement of a number of new information processing technologies, such as the typewriter, calculators, tabulation gears and book-keeping machines, starting from the 1880s in the United States.
Andreas Reinstaller, Werner Hölzl
core  

Bidirectional Associations Between Body Image Concerns and Sense of Competence and Relatedness in Students: Gender and Age Differences

open access: yesJournal of Adolescence, EarlyView.
ABSTRACT Introduction Psychological difficulties can impede the satisfaction of competence and relatedness needs, which are essential for students' well‐being and academic achievement. Body image concerns are common psychological difficulties among youth.
Fanny‐Alexandra Guimond   +7 more
wiley   +1 more source

The Role of Macroeconomic Policy in Overcoming Slow Economic Growth - International Comparisons and Policy Perspectives [PDF]

open access: yes
A fundamental point of this paper is, that - given existing structures (!) - the persistent problem of high unemployment in Europe cannot be attributed to tendencies in "jobless-growth" but is mainly caused by the fact that GDP-growth has been - and is ...
Ewald Nowotny
core  

Genetic and environmental influences on sleep quality, ability to settle, and crying duration in 2‐ and 5‐month‐old infants: A longitudinal twin study

open access: yesJCPP Advances, EarlyView.
This study found that genetic factors largely influence crying duration and settle ability in infancy, while shared environmental factors primarily affect the number of night wakeups. Etiological influences tended to change from 2 to 5 months, reflecting a highly plastic period in infant brain development and in child‐environment interactions. Abstract
Charlotte Viktorsson   +5 more
wiley   +1 more source

%QLS SAS Macro: A SAS Macro for Analysis of Correlated Data Using Quasi-Least Squares [PDF]

open access: yes
Quasi-least squares (QLS) is an alternative computational approach for estimation of the correlation parameter in the framework of generalized estimating equations (GEE). QLS overcomes some limitations of GEE that were discussed in Crowder (1995).
Han-Joo Kim, Justine Shults
core   +1 more source

Leveraging the Public School System to Combat Adolescent Obesity: The Limits of Arkansas’s Statewide Policy Initiative [PDF]

open access: yes, 2018
Purpose: This study assessed the effectiveness of one of the earliest statewide policy initiatives to address obesity via schools—Arkansas’s Act 1220 of 2003—on adolescent obesity.
Gee, Kevin A
core   +1 more source

Trends in the incidence of attention deficit hyperactivity disorder in children and early risk factors

open access: yesJCPP Advances, EarlyView.
Abstract Background Few studies have used nationwide registry data from both primary and secondary healthcare services to examine the incidence of attention‐deficit/hyperactivity disorder (ADHD) in children while accounting for early risk factors. We aimed to investigate trends in ADHD diagnoses and associated risk factors.
Marika Leppänen   +8 more
wiley   +1 more source

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