Results 11 to 20 of about 23,472 (239)
An investigation into in-sample and out-of-sample model selection for nonstationary autoregressive models. [PDF]
Br J Math Stat PsycholAbstract The stationary autoregressive model forms an important base of time‐series analysis in today's psychology research. Diverse nonstationary extensions of this model are developed to capture different types of changing temporal dynamics. However, researchers do not always have a solid theoretical base to rely on for deciding a‐priori which of ...
Zhang Y +4 more
europepmc +2 more sources
Spatial Nonstationarity and Autoregressive Models [PDF]
Environment and Planning A: Economy and Space, 1998 Until relatively recently, the emphasis of spatial analysis was on the investigation of global models and global processes. Recent research, however, has tended to explore exceptions to general processes, and techniques have been developed which have as their focus the investigation of spatial variations in local relationships. One of these techniques,
Brunsdon, Chris +2 more
openaire +4 more sources
Journal of Water and Climate Change, 2021 The changing nature of the Earth's climate and rapid urbanization lead to the change of rainfall characteristics in urban areas, the stability of rainfall series is destroyed and it is a difficult challenge to consider this change in urban drainage ...
Zening Wu, Shifeng Liu, Huiliang Wang
doaj +1 more source
On Nonstationarity of Human Contact Networks [PDF]
2010 IEEE 30th International Conference on Distributed Computing Systems Workshops, 2010 The measurement and the analysis of the temporal patterns arising in human networks is of fundamental importance to many application domains including targeted advertising, opportunistic routing, resource provisioning (e.g., bandwidth allocation in infrastructured wireless networks) and, more in general, modeling of human social behavior. In this paper
Salvatore Scellato +3 more
openaire +2 more sources
Uncertainties and risks in reservoir operations under changing hydroclimatic conditions
Journal of Water and Climate Change, 2021 Uncertainties and risks associated with hydroclimatic variations pose a challenge to the management and planning of water resources systems. This study demonstrates the importance of understanding the changing hydrologic regime of the Feather River Basin
Ali Aljoda, Shaleen Jain
doaj +1 more source
Assessing design floods for Brazilian hydropower plants spillways under nonstationarity conditions [PDF]
RBRHNonstationarity presents a challenge for hydrological design, particularly for large structures that require high return period floods. This paper assesses the statistical properties of annual maximum daily streamflows from 152 hydropower plants (HPPs ...
Laís Mariana Wosniack +1 more
doaj +2 more sources
Mitigation of spatial nonstationarity with vision transformers
Computers & Geosciences, 2023 Spatial nonstationarity, the location variance of features' statistical distributions, is ubiquitous in many natural settings. For example, in geological reservoirs rock matrix porosity varies vertically due to geomechanical compaction trends, in mineral deposits grades vary due to sedimentation and concentration processes, in hydrology rainfall varies
Lei Liu +3 more
openaire +2 more sources
Frontiers in Earth Science, 2023 When large reservoirs are built and put into operation, the downstream hydrological processes will be altered significantly, and ecology and agricultural irrigation water of the basin will be affected to some extent.
Rongrong Li, Guoce Xu
doaj +1 more source
UNSTEADY FRICTION AND HEAT TRANSFER IN THE INITIAL PIPELINE SECTION AT THE RESET OF THERMAL LOAD
Известия высших учебных заведений: Проблемы энергетики, 2018 The results of numerical and experimental study of wall friction and heat transfer in a short cylindrical channel are presented. Hydrodynamic and thermal characteristics of nonstationary high-temperature gas flow are determined.
K. H. Gilfanov +4 more
doaj +1 more source
Analysis of Antarctic Ice Core Data (EPICA Dome C) with Flicker-Noise Spectroscopy [PDF]
, 2009 Evolution of Earth’s climate system over the past 800,000 years represents a complex process with successions of uneven glacial and interglacial periods. The length, amplitudes, and development of each climate cycle depend on a number of different
Jean Robert Petit +2 more
core +2 more sources