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Spatial Patterns and Temporal Variability of Drought in Western Iran

Raziei, Tayeb; Saghafian, Bahram; Paulo, Ana; Pereira, Luis - In: Water Resources Management 23 (2009) 3, pp. 439-455

An analysis of drought in western Iran from 1966 to 2000 is presented using monthly precipitation data observed at 140 … gauges uniformly distributed over the area. Drought conditions have been assessed by means of the Standardized Precipitation … Index (SPI). To study the long-term drought variability the principal component analysis was applied to the SPI field …

Persistent link: https://www.econbiz.de/10010997509

An Application of GPCC and NCEP/NCAR Datasets for Drought Variability Analysis in Iran

Raziei, Tayeb; Bordi, Isabella; Pereira, Luis - In: Water Resources Management 25 (2011) 4, pp. 1075-1086

drought monitoring and early warning system in Iran. To overcome this obstacle, we have evaluated the applicability of GPCC … and NCEP/NCAR precipitation datasets for drought analysis in Iran. For this purpose, drought variability across the … and NCEP/NCAR datasets identify the same sub-regions of drought variability and they are in good agreement with …

Persistent link: https://www.econbiz.de/10010794808

A new approach for developing comprehensive agricultural drought index using satellite-derived biophysical parameters and factor analysis method

Mokhtari, Mohammad; Adnan, Robiah; Busu, Ibrahim - In: Natural Hazards 65 (2013) 3, pp. 1249-1274

The accurate assessment of drought and its monitoring is highly depending on the selection of appropriate indices …. Despite the availability of countless drought indices, due to variability in environmental properties, a single universally … drought index has not been presented yet. In this study, a new approach for developing comprehensive agricultural drought …

Persistent link: https://www.econbiz.de/10010996524

Financial conditions indexes for Asian economies

Debuque-Gonzales, Margarita; Socorro Gochoco-Bautista, Maria - 2013

Financial conditions indexes (FCIs) are constructed for five Asian economies, namely, Hong Kong, China; Japan; the Republic of Korea; Malaysia; and Singapore, using a principal component analysis (PCA) methodology from Hatzius et al. (2010) and quarterly data. Various financial stress indicators are...

Persistent link: https://www.econbiz.de/10009734252

Discussion of "principal volatility component analysis" by Yu-Pin Hu and Ruey Tsay

McAleer, Michael - 2014

Persistent link: https://www.econbiz.de/10010359780

Discussion of "Principal Volatility Component Analysis" by Yu-Pin Hu and Ruey Tsay

McAleer, Michael - 2014

Persistent link: https://www.econbiz.de/10010348324

Discussion of "Principal Volatility Component Analysis" by Yu-Pin Hu and Ruey Tsay

McAleer, Michael - 2014

This note discusses some aspects of the paper by Hu and Tsay (2014), "Principal Volatility Component Analysis". The key issues are considered, and are also related to existing conditional covariance and correlation models. Some caveats are given about multivariate models of time-varying...

Persistent link: https://www.econbiz.de/10010250536

Treatments of non-metric variables in partial least squares and principal component analysis

Yoon, Jisu; Krivobokova, Tatyana - 2015

This paper reviews various treatments of non-metric variables in Partial Least Squares (PLS) and Principal Component Analysis (PCA) algorithms. The performance of different treatments is compared in the extensive simulation study under several typical data generating processes and...

Persistent link: https://www.econbiz.de/10010498613

On dynamic forward rate modeling and principal component analysis

Bermin, Hans-Peter - In: International journal of theoretical and applied finance 17 (2014) 5, pp. 1-20

Persistent link: https://www.econbiz.de/10010437211

Risikoprämien von Unternehmensanleihen : eine theoretische und empirische Untersuchung

Lu, Yun - 2013

Persistent link: https://www.econbiz.de/10010408632

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