ANALISIS BREAK EVENT POINT (BEP) PADA PABRIK TEH PT. PERKEBUNAN NUSANTARA VI UNIT USAHA KAYU ARO

Unit Root Tests for Time Series with a Structural Break When the Break Point Is Known

Unit root tests for time series with level shifts are considered. The level shift is assumed to occur at a known time point. In contrast to some other proposals the level shift is modeled as part of the intercept term of the stationary component of the data generation process which is separated from the unit root component. In this framework simple shift functions result in a smooth transition ...

Aluminum break-point contacts

Trend Break or Unit Root in GDP of Iran

It has been suggested that existing estimates of the long-run impact of a surprise move in income may have a substantial upward bias due to the presence of a trend break in 1970s (1350s) and 1980s (1360s) gross domestic product (contained oil) data of Iran. This article shows that the statistical evidence does not warrant abandoning the no-trend-break null hypothesis at the 5% significance leve...

On the end-point issue in unit root tests in the presence of a structural break

This paper shows that the spurious rejection problem illustrated by Leybourne et al. (1998) [Leybourne, S.J., Mills, T., Newbold, P., 1998. Spurious rejections by Dickey–Fuller tests in the presence of a break under the null. Journal of Econometrics 87, 191–203] is restricted to the DF type test, which is based on the conditional likelihood function discarding the first observation.  2000 Else...

Frequency of thalassemia carrier and Hb variant and the quality of stored donor blood

Metode: Penelitian ini menggunakan disain potong lintang dengan sampel berasal dari 138 donor darah. Dilakukan skrining talasemia dan Hb varian pada keseluruhan sampel, yang meliputi pemeriksaan hitung sel darah lengkap, analisis Hb metode HPLC dan analisis DNA untuk deteksi pembawa sifat talasemia α. Uji kualitas darah simpan dilakukan melalui penghitungan persen hemolisis sel darah merah pada...