Results 51 to 60 of about 1,274,653 (285)

Marriage of matching doors: Marital sorting on parental background in China

open access: yesDemographic Research, 2016
Background: Who marries whom has important implications for the (re-)production of social inequalities. Whereas previous studies on marital sorting have mainly focused on the husband's and the wife's traits, in this research I assess the importance of ...
Yang Hu
doaj   +1 more source

Multiple reflection expansion and heat kernel coefficients [PDF]

open access: yes, 2001
We propose the multiple reflection expansion as a tool for the calculation of heat kernel coefficients. As an example, we give the coefficients for a sphere as a finite sum over reflections, obtaining as a byproduct a relation between the coefficients ...
A. E. M. van de Ven   +38 more
core   +3 more sources

Defining Roles in Pediatric Palliative Care: Perspectives From Oncology and Palliative Care Teams

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Early integration of pediatric palliative care (PPC) is associated with improved symptom management, quality of life, and healthcare utilization for children with cancer. Despite this, variation persists in how PPC is understood, operationalized, and integrated within pediatric oncology programs. In particular, ambiguity surrounding
Leeat Granek   +13 more
wiley   +1 more source

Gloger's Rule or Historical Conjecture? Tests in Mammals

open access: yesEcology and Evolution
Gloger's rule states that homeotherms are darker at lower latitudes; however, a number of 19th‐century naturalists also suggested that animals are more brightly coloured in the tropics than in temperate regions. Using phylogenetic comparative methods, we
Natasha Howell, Tim Caro
doaj   +1 more source

Differential frequency of autotomy in two colour morphs of the grasshopper Atractomorpha lata (Orthoptera: Pyrgomorphidae) on dense and sparse grass substrates

open access: yesEuropean Journal of Entomology
Background colour matching is considered highly effective in preventing the detection of an animal by visual predators. In a grasshopper species with green-brown polymorphism, a green morph on grass and a brown morph on bare ground or dead litter may be ...
Jun-Ya IDE
doaj   +1 more source

X-ray background synthesis: the infrared connection [PDF]

open access: yes, 2002
We present a synthesis model of the X-ray background based on the cross-correlation between mid-infrared and X-ray surveys, where the distribution of type 2 sources is assumed to follow that of luminous infrared galaxies while type 1 sources are traced ...
A. C. Fabian   +61 more
core   +2 more sources

The Role of Invasive Procedures in the Treatment of Complicated Gastrointestinal Graft‐Versus‐Host Disease in Pediatric Patients

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Gastrointestinal graft‐versus‐host disease (GI GVHD) following hematopoietic stem cell transplant is typically managed with medical therapy, but surgery and angioembolization may be warranted in selected cases with life‐threatening complications.
Gaia Brunetti   +12 more
wiley   +1 more source

Camouflage Using Surface Disruption: The Importance of Corners Versus Edges

open access: yesEcology and Evolution
Disruptive colouration is a common mode of camouflage used by predators and prey to conceal their body contours. However, it is unclear how disruptive colouration hinders the detection and recognition of three‐dimensional (3D) body shapes.
Ruby McLellan   +3 more
doaj   +1 more source

Topological distance-constrained feature descriptor learning model for vessel matching in coronary angiographies

open access: yesVirtual Reality & Intelligent Hardware, 2021
Background: Feature matching technology is vital to establish the association between virtual and real objects in virtual reality and augmented reality systems. Specifically, it provides them with the ability to match a dynamic scene. Many image matching
Xiaojiao Song   +4 more
doaj   +1 more source

Hospitalization Through Families’ Eyes: Comparing Inpatient Care Quality for Children With Sickle Cell Disease and Cystic Fibrosis in Canada

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Sickle cell disease (SCD) is a chronic, inherited hemoglobinopathy that requires frequent hospitalization for disease‐related complications. Canadian data on inpatient care is limited. This study compared caregiver‐reported hospital experiences of children with SCD to those with cystic fibrosis (CF), a chronic, autosomal recessive ...
Hailey M. Zwicker   +11 more
wiley   +1 more source

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