Results 1 to 10 of about 10,568,821 (148)

A Three-factor Model of Social Media Addiction

open access: yesРоссийский психологический журнал, 2022
Introduction. Social media addiction is one of the most widespread non-medical addictions. Its numerous negative consequences have created a psychological problem, which has made it essential to study factors of social media addiction.
Виктор П. Шейнов   +1 more
doaj   +1 more source

Cognitive Trait Model: Measurement Model for Mastery Level and Progression of Learning

open access: yesMathematics, 2022
This paper seeks to establish a framework which operationalizes cognitive traits as a portion of the predefined mastery level, the highest level expected to successfully perform all of the relevant tasks of the target trait. This perspective allows us to
Jaehwa Choi
doaj   +1 more source

Survival of the Fittest: The Long-run Productivity Analysis of the Listed Information Technology Companies in the US Stock Market

open access: yesEconomics: Journal Articles, 2023
This article tries to estimate the operating efficiency among 30 years (1989–2018) in the information technology (IT) industry, where technologies are everchanging. The balanced panel data model of Kneip et al.
Qiao Guangshun
doaj   +1 more source

De-Biased Graphical Lasso for High-Frequency Data

open access: yesEntropy, 2020
This paper develops a new statistical inference theory for the precision matrix of high-frequency data in a high-dimensional setting. The focus is not only on point estimation but also on interval estimation and hypothesis testing for entries of the ...
Yuta Koike
doaj   +1 more source

Federal Budget and State Fiscal Policy: Macroeconomic Adaptation until 2025 [PDF]

open access: yesФинансовый журнал, 2023
The article examines the modern concept of the state fiscal policy in Russia and the possibilities of its implementation through the federal budget in the face of new global challenges.
Mikhail E. Kosov   +3 more
doaj   +1 more source

Sklar’s theorem, copula products, and ordering results in factor models

open access: yesDependence Modeling, 2021
We consider a completely specified factor model for a risk vector X = (X1, . . ., Xd), where the joint distributions of the components of X with a risk factor Z and the conditional distributions of X given Z are specified.
Ansari Jonathan, Rüschendorf Ludger
doaj   +1 more source

The Casual Factor Models of Mathematics Learning Achievement [PDF]

open access: yesJournal of Humanities and Social Sciences Mahasarakham University, 2022
The objectives of the study were. 1) to find the correlation among achievement motivation, attitudes towards mathematics, educational support from parents, teacher’s teaching quality and classroom atmosphere with mathematics learning achievement.
Phubet Srimahaprom   +2 more
doaj  

A comparison of the VAR model and the PC factor model in forecasting inflation in Montenegro [PDF]

open access: yesEkonomski Anali, 2013
Montenegro started using the euro in 2002 and regained independence in 2006. Its main economic partners are European countries, yet inflation movements in Montenegro do not coincide with consumer price fluctuations in the eurozone.
Lipovina-Božović Milena
doaj   +1 more source

Hierarchically nested factor model from multivariate data [PDF]

open access: yes, 2007
We show how to achieve a statistical description of the hierarchical structure of a multivariate data set. Specifically we show that the similarity matrix resulting from a hierarchical clustering procedure is the correlation matrix of a factor model, the
Anderberg M. R.   +9 more
core   +1 more source

All Happy Emotions Are Alike but Every Unhappy Emotion Is Unhappy in Its Own Way: A Network Perspective to Academic Emotions

open access: yesFrontiers in Psychology, 2020
Quantitative research into the nature of academic emotions has thus far been dominated by factor analyses of questionnaire data. Recently, psychometric network analysis has arisen as an alternative method of conceptualizing the composition of ...
Markus Mattsson   +2 more
doaj   +1 more source

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