Results 131 to 140 of about 118,516 (301)

Using M-quantile models as an alternative to random effects to model the contextual value-added of schools in London [PDF]

open access: yes
The measurement of school performance for secondary schools in England has developed from simple measures of marginal performance at age 16 to more complex contextual value-added measures that account for pupil prior attainment and background.
James J Brown, Nikos Tzavidis
core  

Fluorescence Tuning of Carbon Dots from Red to Blue via UV‐Induced Photochemical Etching

open access: yesAdvanced Science, EarlyView.
A UV‐driven photochemical process enables continuous color evolution of carbon dots from red to blue using a single irradiation parameter. Progressive photoetching restructures graphitic domains and surface states, allowing full visible‐spectrum emission control.
Nanzhi Zheng   +6 more
wiley   +1 more source

The specification of the propensity score in multilevel observational studies

open access: yes
Propensity Score Matching (PSM) has become a popular approach to estimation of causal effects. It relies on the assumption that selection into a treatment can be explained purely in terms of observable characteristics (the “unconfoundedness assumption ...
Mealli, Fabrizia, Arpino, Bruno
core  

Multilevel Models for Longitudinal Data

open access: yes, 2007
Repeated measures and repeated events data have a hierarchical structure which can be analysed by using multilevel models. A growth curve model is an example of a multilevel random-coefficients model, whereas a discrete time event history model for ...
Steele, F.A, Fiona Steele
core   +1 more source

Field‐Free Spin‐Splitting‐Torque Driven Stochastic Neuron Mimicking the Neuromorphic Imagination for High‐Performance Recognition

open access: yesAdvanced Science, EarlyView.
The human brain's imagination, which enables autonomous driving hazard avoidance by completing missing visual information, relies on Gaussian‐stochastic neuron. We report the altermagnetic RuO2 spintronic neurons integrating field‐free switching and intrinsic Gaussian stochasticity, building an all‐spin ANN for high‐quality image repairing and high ...
Junwei Zeng   +9 more
wiley   +1 more source

The impact of objective and subjective measures of air quality and noise on house prices: a multilevel approach for downtown Madrid [PDF]

open access: yes
Air quality is one of the major concerns in big cities. It is therefore of interest to evaluate properly air pollution. Specifically, this paper aims at measuring how air quality is incorporated in transaction prices in downtown Madrid. For that purpose,
Julie Le Gallo, Coro Chasco
core  

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

The neo-fascist territorial legacy and the success of the Lega in the 2019 European elections: a multilevel approach

open access: yesItalian Political Science, 2019
In Italy, the Lega obtained outstanding electoral success in the 2019 European elections, becoming the first party on the political spectrum. Previous literature has argued that this performance can be attributed to the leadership of Matteo Salvini, who ...
Moreno Mancosu, Riccardo Ladini
doaj  

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