10,549 research outputs found
ASEAN-5 Macroeconomic Forecasting Using a GVAR Model
This paper examines and evaluates macroeconomic forecasts for the original ASEAN-5 members in the context of a global vector autoregressive (GVAR) model covering 20 countries, grouped into nine countries/regions. After estimating the GVAR model, we generate 12 one-quarter-ahead forecasts for the next quarter including real GDP, inflation, short-term interest rates, real exchange rates, and real equity prices over the period 2009Q1â2011Q4, with four out-of-sample forecasts over the period 2009Q1â2009Q4. Forecast evaluation results based on the panel Diebold-Mariano (DM) tests show the GVAR forecasts tend to outperform forecasts based on the benchmark country-specific models, especially for short-term interest rates and real equity prices, emphasizing the interdependencies in the global financial market.Macroeconomic Forecasting; Global vector autoregressive model (GVAR); Southeast Asia
Implementing a neutral-atom controlled-phase gate with a single Rydberg pulse
One can implement fast two-qubit entangling gates by exploiting the Rydberg
blockade. Although various theoretical schemes have been proposed,
experimenters have not yet been able to demonstrate two-atom gates of high
fidelity due to experimental constraints. We propose a novel scheme, which only
uses a single Rydberg pulse illuminating both atoms, for the construction of
neutral-atom controlled-phase gates. In contrast to the existing schemes, our
approach is simpler to implement and requires neither individual addressing of
atoms nor adiabatic procedures. With parameters estimated based on actual
experimental scenarios, a gate fidelity higher than 0.99 is achievable.Comment: 6 pages, 5 figure
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Chemical Constituents and Biological Activity of Asam Aur Aur (Garcinia Parvifolia) and Jinggau (Ploiarium Alternifolium)
Chemical and biological studies were carried out on two plants, Garcinia parvifolia (Guttiferae) and Ploiarium alternifolium (Theaceae). The chemical investigations covered xanthones, benzophenones, anthraquinones, and triterpenes.
The stem bark of Garcinia parvifolia and Ploiarium alternifolium were investigated and this resulted in the isolation of ten known compounds. These compounds were isolated using common chromatographic techniques and were identified by using spectroscopic experiments such as NMR, MS, IR and UV.
Detailed chemical studies on Garcinia parvifolia have yielded two triterpenoids, stigmasterol and ÎČ-sitosterol, three xanthones, 6-deoxyjacareubin, daphnifolin and rubraxanthone, one benzophenone, isoxanthochymol and one alkaloid, caffeine. Meanwhile, investigations on Ploiarium alternifolium have afforded three anthraquinones, ploiariquinone A, emodin and 1,8-dihydroxy-3-methoxy-6-methyl-anthraquinone.
The larvicidal test was carried out towards the larvae of Aedes aegypti. The crude chloroform, ethyl acetate and methanol extracts of Garcinia parvifolia were weakly active against the larvae of Aedes aegypti with LC50 values of 204.26, 194.96 and 236.44 ÎŒg/ml respectively while the crude chloroform extract of Ploiairum alternifolium was weakly active against the larvae of Aedes aegypti with an LC50 value of 159.12 ÎŒg/ml.
The antimicrobial assay was carried out towards four pathogenic bacteria, Methicillin Resistant Staphylococcus aureus, Pseudomonas aeruginosa, Staphylococcus choleraesuis and Bacillus subtilis. For the microbes MRSA, P. aeruginosa and S. choleraesuis there were no inhibition by all the crude extracts of Garcinia parvifolia. The crude chloroform and methanol extracts of Ploiarium alternifolium showed no activity towards the microbe S. choleraesuis.
Cytotoxic tests were performed using HL-60 Cell Line. The crude hexane, chloroform and ethyl acetate extracts of Garcinia parvifolia were considered to be active against the HL-60 cell line with IC50 values of less than 30 ÎŒg/ml. The rude chloroform extract of Ploiarium alternifolium was also considered to be active against the HL-60 cell line with an IC50 value of 23.3 ÎŒg/ml. The crude methanol extract of Ploiarium alternifolium showed the most significant activity with an IC50 value of 5.2 ÎŒg/ml.
The antifungal activity testing of the plant extracts were carried out against the fungi Candida albican, Aspergillus ochraceaus, Sacchoromyces cerevisiae and Candida lypolytica. No activity was observed for all the crude extracts
Measuring the impact of the self-image reformation program on women pastors of Manchu Autonomous Counties (in China)
https://place.asburyseminary.edu/ecommonsatsdissertations/1423/thumbnail.jp
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