Results 61 to 70 of about 43,954 (215)

Estimating Causal Effects With Observational Data: Guidelines for Agricultural and Applied Economists

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT Most research questions in agricultural and applied economics are causal in nature: they study how changes in one or more variables (such as policies, prices or weather) affect one or more other variables (e.g., income, crop yields or pollution).
Arne Henningsen   +6 more
wiley   +1 more source

Síndrome do nevo de cabelo lanoso Woolly hair nevus syndrome

open access: yesAnais Brasileiros de Dermatologia, 2004
Nevo de cabelo lanoso é condição rara, não hereditária, caracterizada por cabelos claros, enovelados, localizados em uma ou mais áreas do couro cabeludo.
Josenildo Rodrigues de Oliveira   +2 more
doaj   +1 more source

Repetitive DNA is Functional and Encodes Parts of the Non‐Coding RNA Repertoire

open access: yesAdvanced Genetics, 2022
This is a commentary on the article by Eviatar Nevo and Kexin Li entitled “Sympatric Speciation in Mole Rats and Wild Barley and Their Genome Repeatome Evolution: A Commentary”, published recently in Advanced Genetics.
James A. Shapiro
doaj   +1 more source

Network Structure and the Efficiency Gains from Mergers: Evidence from U.S. Freight Railroads

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT The trade‐off between market power and efficiency gains is central to antitrust analyses of mergers, but empirical evidence quantifying efficiencies remains limited. Using transaction‐level data from U.S. freight railroads (1985–2005), this article quantifies merger‐induced cost efficiencies, driven mainly by eliminating inter‐railroad ...
Yanyou Chen
wiley   +1 more source

Elastorrexis papulosa: una forma particular de nevo conjuntivo

open access: yesRevista de la Asociación Colombiana de Dermatología y Cirugía Dermatológica, 2017
La elastorrexis papulosa es una dermatosis rara, habitualmente adquirida, caracterizada por pápulas asintomáticas, no foliculares, de color de piel normal, situada en tronco y brazos, con una histopatología que muestra intensa fragmentación de las ...
Hugo Néstor Cabrera   +4 more
doaj   +1 more source

How many $n$-vertex triangulations does the $3$-sphere have? [PDF]

open access: yes, 2013
It is known that the $3$-sphere has at most $2^{O(n^2 \log n)}$ combinatorially distinct triangulations with $n$ vertices.
Nevo, Eran, Wilson, Stedman
core  

Demand Estimation with Text and Image Data

open access: yesThe RAND Journal of Economics, EarlyView.
ABSTRACT We propose a demand estimation approach that leverages unstructured data to infer substitution patterns. Using pre‐trained deep learning models, we extract embeddings from product images and textual descriptions and incorporate them into a mixed logit demand model.
Giovanni Compiani   +2 more
wiley   +1 more source

Nevo melanocítico congénito gigante

open access: yesRevista Ecuatoriana de Pediatría, 2020
Introducción: Los Nevos Melanocíticos Congénitos (NMC) son lesiones cutáneas que frecuentemente están presentes desde el nacimiento, sin embargo, la presencia de un NMC gigante mayor a 20 cm es infrecuente, motivo de presentación del caso. Caso: Niño
Patricia Paredes Lascano   +2 more
doaj   +1 more source

‘Handcuffed Parenthood’: Parents of Young At‐Risk Children Who Were Removed From Their Homes in East Jerusalem

open access: yesChild &Family Social Work, EarlyView.
ABSTRACT Parents of children who were removed from home are generally under‐researched, and there is a shortage of knowledge concerning their perceptions and experiences, particularly in complex contexts. Using a context‐informed perspective and intersectionality theory, this study aims to better understand the experiences of parents regarding their ...
Mayis Eissa, Anat Zeira
wiley   +1 more source

‘Fatherhood Under Suspicion’: The Experiences of Fathers of At‐Risk Children From East Jerusalem Following Out‐of‐Home Placement

open access: yesChild &Family Social Work, EarlyView.
ABSTRACT Fathers, particularly in conservative patriarchal societies and politically complex contexts, are often underrepresented in research on child protection and out‐of‐home placements. Addressing this significant knowledge gap, this study focuses on Palestinian fathers from East Jerusalem whose young children were removed from their homes by court
Mayis Eissa
wiley   +1 more source

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