This paper considers econometric issues related to time-series data that have been subject to abrupt governmental interventions. The motivating example for this study is the Brazilian monthly inΒ―ation rate (1974 : 1Β±1993 : 6) which we use throughout for illustration. This series has been heavily inΒ―
An implementation of the exponential pyramid data structure with application to determination of symmetries in pictures
β Scribed by F Warren Burton; John G Kollias; Nikitas A Alexandridis
- Publisher
- Elsevier Science
- Year
- 1984
- Weight
- 454 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0734-189X
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This review describes the use of frequency-selective filters for the design of selective NMR experiments. Frequency-selective filters constitute 'user-friendly' and efficient alternatives to selective excitation in most applications. Different selective schemes are discussed, which are based either
Figure 2 a -f . The measurements were made with the feed positions indicated. ## Discussion The surprising result in Table 1 is the relatively wide bandwidth of the shorted patch. For h s 7 mm, which corresponds to about 0.058 at the center frequency, the impedance 0 bandwidth is 18.54%. For compa