Results 51 to 60 of about 148,439 (334)
Advanced Functional Materials, EarlyView.In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa +19 more
wiley +1 more source
Shadow Economy: Determinants and Its Impact on Foreign Direct Investment
JIET (Jurnal Ilmu Ekonomi Terapan)The shadow economy poses a significant threat to government revenue and the effectiveness of economic policies. This paper investigates the causes of the shadow economy and its influence on foreign direct investment (FDI).
Unggul Heriqbaldi +1 more
doaj +1 more source
Research of speaker recognition system based on GMM-SVM
Gong-kuang zidonghua, 2014 According to the similarity of speech data of the same type and characteristic that data of different types has different geometrical distance, the paper proposed a speaker recognition system based on SVM-GMM.
ZHAO Lihui +3 more
doaj +1 more source
GMM with many weak moment conditions [PDF]
Working Paper Series, 2005 Using many moment conditions can improve efficiency but makes the usual GMM inferences inaccurate. Two step GMM is biased. Generalized empirical likelihood (GEL) has smaller bias but the usual standard errors are too small. In this paper we use alternative asymptotics, based on many weak moment conditions, that addresses this problem.
Whitney K. Newey, Frank Windmeijer
openaire +3 more sources
Advanced Materials, Volume 37, Issue 13, April 2, 2025.Metal‐covalent organic frameworks (MCOFs) are novel porous materials that exhibit the advantages of covalent and metal‐organic frameworks. However, it is extremely difficult to resolve their atomic structure and better understand their structure‐properties relation. This work utilizes a synergistic combination of advanced microscopy, spectroscopic, and
Seán Hennessey +11 more
wiley +1 more source
Exact computation of GMM estimators for instrumental variable quantile regression models
, 2017 We show that the generalized method of moments (GMM) estimation problem in instrumental variable quantile regression (IVQR) models can be equivalently formulated as a mixed integer quadratic programming problem.
Chen, Le-Yu, Lee, Sokbae
core +1 more source
Inference for Iterated GMM Under Misspecification
Econometrica, 2021 This paper develops inference methods for the iterated overidentified Generalized Method of Moments (GMM) estimator. We provide conditions for the existence of the iterated estimator and an asymptotic distribution theory, which allows for mild misspecification.
Hansen, BE, Lee, S
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Advanced Materials, EarlyView.Detecting proteins secreted by a single cell while retaining its viability remains challenging. A particles‐in‐particle (PiPs) system made by co‐encapsulating barcoded microparticles (BMPs) with a single cell inside an alginate hydrogel particle is introduced.
Félix Lussier +10 more
wiley +1 more source
Determinants of Bank Profitability in CEE Countries: Evidence from GMM Panel Data Estimates [PDF]
, 2021 Alexandra Horobeţ +3 more
openalex +1 more source
Advanced Materials, EarlyView.The ability to grow nanostructures based on inorganic helical crystals with long‐range order will enable a platform to realize physical states that arise from chirality. Herein, it is demonstrated that controlled vapor phase deposition of an atomically precise helical crystal, GaSI, into ultrathin 1D nanowires and quasi‐2D nanoribbons.
Kaitlyn G. Dold +15 more
wiley +1 more source