Results 51 to 60 of about 181,747 (177)

Research on Iterative Learning Semi-active Control for Curve Passing of High-speed Train

机车电传动, 2020
When the high-speed train passes the curve, its dynamics performance deteriorates. In order to improve the dynamic performance of high-speed train when passing through different curves, the influence of semi-active control with yaw damper on its dynamic ...
Yongjun AI, Chunjun CHEN, Xin LI, Jianrong ZHOU   +3 more
doaj  

Are PIIGS so different? An empirical analysis of demand and supply shocks [PDF]

Panoeconomicus, 2017
This paper analyses responses to supply and demand shocks in PIIGS countries. We compare the results obtained for PIIGS with those of Germany and the USA, and also with those of France, which despite its government’s efforts demonstrate ...
Syssoyeva-Masson Irina, Sousa Andrade João   +1 more
doaj   +1 more source

Testing Covariance Stationarity [PDF]

Econometric Reviews, 2007
In this paper, we show that the widely used stationarity tests such as the Kwiatkowski Phillips, Schmidt, and Shin (KPSS) test have power close to size in the presence of time-varying unconditional variance. We propose a new test as a complement of the existing tests.
Zhijie Xiao, Luiz Renato Lima
openaire   +1 more source

Water Level Temporal Variability of Lake Mégantic during the Period 1920–2020 and Its Impacts on the Frequency of Heavy Flooding of the Chaudière River (Quebec, Canada)

Hydrology
The objective of this study is to analyze the temporal variability in water levels of Lake Mégantic (27.4 km2) during the period 1920–2020 in relation to anthropogenic and natural factors on the one hand, and its impact on the intensity and frequency of ...
Samuel Goulet, Ali Arkamose Assani, Alexandre Roy   +2 more
doaj   +1 more source

On the Autocorrelation and Stationarity of Multi-Scale Returns

Mathematics
In this article, we conduct a statistical analysis of the autocorrelation functions (ACF) of multi-scale logarithmic returns computed over maximal monotonic uninterrupted trends (runs) in financial indices’ daily data. We analyze the Dow Jones Industrial
Carlos Manuel Rodríguez-Martínez, Héctor Francisco Coronel-Brizio, Horacio Tapia-McClung, Manuel Enríque Rodríguez-Achach, Alejandro Raúl Hernández-Montoya   +4 more
doaj   +1 more source

Stationarity and Memory of ARCH Models [PDF]

Sufficient conditions for strict stationarity of ARCH(8) are established, without imposing covariance stationarity and for any specification of the conditional second moment coefficients.
Paolo Zaffaroni
core  

“On a skinny horse in bad weather…”: the problem of availability of land medical care in Russia at the turn of the 19th and 20th centuries (according to the data of the Tula province)

Studia Humanitatis, 2022
The article discusses the evolution of “accessibility” concept in zemstvo medicine at the turn of the 19th and 20th centuries. The main theoretical approaches to the definition of this concept at different stages of the development of medical thought are
Lyubushkin Alexander Dmitrievich
doaj  

Exponential-Gaussian Distribution and Associated Time Series Models

Revstat Statistical Journal, 2023
Exponential-Gaussian distribution has already appeared in the literature and it is widely used in many fields. In this paper, we study its application in time series through a model-based approach. An autoregressive process of order one with exponential-
Nitha K.U, Krishnarani S.D.
doaj  

Nonlinearity and stationarity of inflation rates: The results in the case of the Western Balkans [PDF]

Ekonomski Signali, 2019
In this article, we explored the nature of the dynamics and behavior of inflation in the case of the Western Balkans. The inflation rate, according to the test results, in most of the countries can be modeled as a stationary process.
Obradović Saša, Obradović Gordana
doaj