Results 21 to 30 of about 2,744,037 (263)

Different Models, Different Outcomes? A Comparison of Approaches to Land Use Modeling in the Dutch Limes [PDF]

open access: yesHeritage, 2021
Current advances in spatial simulation bring unprecedented possibilities for spatio-temporal modeling. In this paper, we focus on modeling the impact of settlement on land use in the Roman period in the Dutch river area, on the northern frontier of the Roman Empire.
Philip Verhagen   +2 more
openaire   +3 more sources

Periconceptional folic acid supplementation and sex difference in prevention of neural tube defects and their subtypes in China: results from a large prospective cohort study

open access: yesNutrition Journal, 2018
Background Folic acid (FA) supplementation is known to prevent neural tube defects (NTDs). We examined whether this preventive effect differs by the sex of the infant.
Jufen Liu   +4 more
doaj   +1 more source

Dose Land Negotiation Policy Promote or Suppress Hidden Debts of Local Governments?

open access: yesLand, 2023
Using panel data from 275 prefecture-level cities in China spanning from 2003 to 2019, this paper employs the multiperiod difference-in-differences method to empirically analyze the policy effect of land negotiation policy on local governments’ hidden ...
Yinglan Zhao   +3 more
doaj   +1 more source

Flexible Regression Models for Rate Differences, Risk Differences and Relative Risks [PDF]

open access: yesThe International Journal of Biostatistics, 2015
Abstract Generalized additive models (GAMs) based on the binomial and Poisson distributions can be used to provide flexible semi-parametric modelling of binary and count outcomes. When used with the canonical link function, these GAMs provide semi-parametrically adjusted odds ratios and rate ratios.
Donoghoe, Mark W., Marschner, Ian C.
openaire   +2 more sources

Alternatives to polynomial trend-corrected differences-in-differences models [PDF]

open access: yesApplied Economics Letters, 2018
A common problem with differences-in-differences (DD) estimates is the failure of the parallel-trend assumption.
openaire   +4 more sources

The Impacts of Rural E-Commerce on County Economic Development: Evidence from National Rural E-Commerce Comprehensive Demonstration Policy in China

open access: yesJournal of Theoretical and Applied Electronic Commerce Research
County economies are essential drivers of national economic development, acting as critical engines for growth and regional equilibrium. This study uses the National Rural E-commerce Comprehensive Demonstration policy, initiated by the Ministry of ...
Yan Yu, Hongbo Tu, Qingsong Tian
doaj   +1 more source

Data factor marketization empowering enterprise innovation quality: New evidence from Chinese patent citations

open access: yesInternational Review of Economics & Finance
This study investigates the relationship between data factor marketization (DFM) and enterprise innovation quality (EIQ) through econometric analysis.
Ning Xu, Longchao Xu, Xiang-Wu Yan
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Double/debiased machine learning for difference-in-differences models [PDF]

open access: yesThe Econometrics Journal, 2020
SummaryThis paper provides an orthogonal extension of the semiparametric difference-in-differences estimator proposed in earlier literature. The proposed estimator enjoys the so-called Neyman orthogonality (Chernozhukov et al., 2018), and thus it allows researchers to flexibly use a rich set of machine learning methods in the first-step estimation.
openaire   +1 more source

A Bibliometric Analysis of Publications in Uremic Toxins From 1991 to 2024

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Uremic toxins are a growing area of research in nephrology, with significant implications in the progression and treatment of chronic kidney disease (CKD) and the management of end‐stage kidney disease (ESKD). This bibliometric analysis aims to evaluate the global research trends, key contributors, and the impact of publications in ...
Yuh‐Shan Ho   +7 more
wiley   +1 more source

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