Results 141 to 150 of about 18,391 (273)

Global agricultural value chains and food prices

American Journal of Agricultural Economics, EarlyView.
Abstract We study the relationship between the extent of participation in global agricultural value chains (GAVCs) and food prices at the country level. Using longitudinal data on a sample of 138 countries for the period 2000–2015 and a shift‐share instrumental variable design, we study how the extent of a country's participation in GAVCs in a given ...
Bernhard Dalheimer, Marc F. Bellemare
wiley   +1 more source

Evaluation of the Ionospheric Corrections Generated by Smartphones with Different Real-Time Products. [PDF]

Sensors (Basel)
Zhang Y, Jiang Y, Gao Y.
europepmc   +1 more source

P4s Are Either Unhelpful or Unnecessary. Proposing a Better AI‐Powered Solution to Predict Patients' Preferences

Bioethics, EarlyView.
ABSTRACT The Personalized Patient Preference Predictor (P4) has been proposed as an AI tool to aid surrogate decision‐making when incapacitated patients lack advance directives. Unlike population‐level Patient Preference Predictors (PPPs), which infer preferences from demographic correlations, P4s fine‐tune large language models (LLMs) on a patient's ...
Beatrice Marchegiani
wiley   +1 more source

BDSet: A First-ever BDS Satellite-based PPP Augmentation Dataset Since 2023. [PDF]

Sci Data
Ouyang C, Shi J, Hou C, Peng W, Guo J, Yao Y.   +5 more
europepmc   +1 more source

Bayesian inference for dynamic Q matrices and attribute trajectories in hidden Markov diagnostic classification models

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley   +1 more source

A new in silico model to precisely design focused ultrasound brain therapies. [PDF]

Med Phys
Conti A, Grossi M, De Andrade PC, Duggento A, Toschi N.   +4 more
europepmc   +1 more source

Latent Poisson count models for action count data from technology‐enhanced assessments

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Recent advances in computerized assessments have enabled the use of innovative item formats (e.g., drag‐and‐drop, scenario‐based), necessitating a flexible model that can capture systematic influence of item types on action counts. In this study, we present a refinement scheme that can explicitly model common features of items and allows ...
Gregory Arbet, Hyeon‐Ah Kang
wiley   +1 more source

Impact of Satellite Clock Corrections and Different Precise Products on GPS and Galileo Precise Point Positioning Performance. [PDF]

Sensors (Basel)
Kiliszek D, Korolczuk K.
europepmc   +1 more source

Public Dental Expenditure and Dental Visits in Europe and Japan

Community Dentistry and Oral Epidemiology, EarlyView.
ABSTRACT Background Dental care is important for oral health, but access to dental services is subject to social inequalities and varies between countries. Despite this, few cross‐national studies have examined how public dental expenditure relates to dental service use among older adults. This study aimed to investigate the associations between public
Yuko Inoue, Jun Aida, Richard G. Watt, Anja Heilmann   +3 more
wiley   +1 more source

Single-base station positioning for photovoltaic power plant inspection UAVs based on PPP-B2b signal. [PDF]

Sci Rep
Zhou L, Xie W, Hu L, Zheng S.
europepmc   +1 more source