Now showing items 12018-12037 of 29236

• #### Fourier inference for stochastic volatility models with heavy-tailed innovations ﻿

(Springer, 2018)
We consider estimation of stochastic volatility models which are driven by a heavy-tailed innovation distribution. Exploiting the simple structure of the characteristic function of suitably transformed observations we ...
• #### Fourier methods for analyzing piecewise constant volatilities ﻿

(Springer, 2017)
We develop procedures for testing whether a sequence of independent random variables has constant variance. If this is fulfilled, the modulus of a Fourier-type transformation of the volatility process is identically equal ...
• #### Fourier-type estimation of the power GARCH model with stable-Paretian innovations ﻿

(Springer, 2016)
We consider estimation for general power GARCH models under stable-Paretian innovations. Exploiting the simple structure of the conditional characteristic function of the observations driven by these models we propose ...
• #### Fourier-type monitoring procedures for strict stationarity ﻿

(Springer, 2018)
We consider model-free monitoring procedures for strict stationarity of a given time series. The new criteria are formulated as L2-type statistics incorporating the empirical characteristic function. Monte Carlo results ...
• #### Fourier-type tests involving martingale difference processes ﻿

(Taylor & Francis, 2017)
We develop testing procedures which detect if the observed time series is a martingale difference sequence. Furthermore, tests are developed that detect change–points in the conditional expectation of the series given its ...
• #### The fourth catalog of active galactic nuclei detected by the Fermi large area telescope ﻿

(IOP, 2020)
The fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Gamma-ray Space Telescope Large Area Telescope (4LAC) between 2008 August 4 and 2016 August 2 contains $2863$ objects located at high Galactic ...
• #### A fourth paradigm?  Some thoughts on atheism in Old Testament scholarship ﻿

(OTWSA/OTSSA, 2012)
In recent decades, OT scholarship has witnessed the emergence of undercurrents of what may be called a fourth paradigm. In contrast to the three familiar faith-based “paradigms,” this one is essentially atheistic. ...
• #### A fourth paradigm?  Some thoughts on atheism in Old Testament Scholarship ﻿

(Department of Biblical and Ancient Studies University of South Africa, 2012)
In recent decades, OT scholarship has witnessed the emergence of undercurrents of what may be called a fourth paradigm. In contrast to the three familiar faith-based "paradigms," this one is essentially atheistic. Scholars ...
• #### FPGA implementation of an enhanced digital detection algorithm for medium range RFID readers ﻿

(North-West University, 2008)
The School of Electrical, Electronic and Computer Engineering of the North-West University is conducting research about RFID (radio frequency identification) medium range reader systems for an international company, iPico. ...
• #### A fractional SEIR epidemic model for spatial and temporal spread of measles in metapopulations ﻿

(Hindawi Publishing Corporation, 2014)
Measles is a higher contagious disease that can spread in a community population depending on the number of people (children) susceptible or infected and also depending on their movement in the community. In this paper we ...
• #### Fractionation of an acidic hydrolysate from steam-treated wood using pervaporation ﻿

(North-West University (South Africa) , Potchefstroom Campus, 2017)
In this study, commercially available pervaporation membranes were evaluated for the recovery of organic acids and furfural from an acidic hydrolysate stream from steam treated wood. Membranes that did not comply with the ...
• #### Fragmentation revisited in the context of global environmental law and governance ﻿

(Juta, 2014)
This article argues that because of environmental law's usual focus on the fragmentation of international environmental law and international environmental governance, we have been missing out on an opportunity to consider ...
• #### Fragmentation: Friend or foe in the effective implementation of the cultural diversity convention in South Africa? ﻿

(VerLoren van Themaat Centre for Public Law Studies, University of South Africa, 2009)
• #### Fragmentation: Friend or foe in the effective implementation of the Cultural Diversity Convention in South Africa? ﻿

(VerLoren van Themaat Centre for Public Law Studies (UNISA), 2009)
It seems as if South Africa has never been as energetically involved in the international law-making arena as she was in the making of the UNESCO Convention on the Protection and Promotion of the Diversity of Cultural ...
• #### Framework and regulatory guidance to perform safety assesments for mining and mine remediation activities ﻿

(North-West University (South Africa) , Potchefstroom Campus, 2016)
This study provided the opportunity to apply the source-receptor-pathway method of solving challenges. The source being the initiation point of the challenge; the pathway, being the routes towards the receptor; and the ...
• #### Framework for a performance management system for municipalities ﻿

(North-West University, 2005)
It is imperative that all municipalities conform to their Integrated Development Plan (IDP) framework and develop a performance management system with specific and realistic measures. It is critical that the plan gets the ...
• #### A framework for advanced Information Communication Technologies integration within Higher Education Engineering Graphics and Design to improve spatial visualization ﻿

(North-West University (South Africa)., 2020)
The purpose of the study was to discover and define the impact of subject-specific advanced information communication technologies as a medium for the teaching and learning of Engineering Graphics and Design in higher ...
• #### A framework for applied quantitative trading strategies in South African equity markets ﻿

(North-West University, 2012)
This study discusses the history, origins and use of quantitative trading in the financial sector and it also lays the ground work for a framework of applied quantitative trading strategies in South African equity markets. ...
• #### A framework for awarding construction projects through term contracts ﻿

(North-West University (South Africa), 2019)
The term contracts in the construction environment often involve requirements for construction projects that originate from project managers that manage both capital and operational expenditure. The term contracts mainly ...
• #### A framework for best practice supply chain management in the chemical manufacturing industry ﻿

(North-West University (South Africa)., 2019)
Supply chain management is dynamic, complex and require specialised skills from a wide spectrum of disciplines. The complexity is exacerbated in the context of the chemical manufacturing industry under normal operating ...

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