Short-term wind power prediction based on extreme learning machine with error correction

Introduction: Large-scale integration of wind generation brings great challenges to the secure operation of the power systems due to the intermittence nature of wind. The fluctuation of the wind generation has a great impact on the unit commitment. Thus accurate wind power forecasting plays a key role in dealing with the challenges of power system operation under uncertainties in an economical and technical way. Methods: In this paper, a combined approach based on Extreme Learning Machine (ELM) and an error correction model is proposed to predict wind power in the short-term time scale. Firstly an ELM is utilized to forecast the short-term wind power. Then the ultra-short-term wind power forecasting is acquired based on processing the short-term forecasting error by persistence method. Results: For short-term forecasting, the Extreme Learning Machine (ELM) doesn’t perform well. The overall NRMSE (Normalized Root Mean Square Error) of forecasting results for 66 days is 21.09 %. For the ultra-short term forecasting after error correction, most of forecasting errors lie in the interval of [−10 MW, 10 MW]. The error distribution is concentrated and almost unbiased. The overall NRMSE is 5.76 %. Conclusion: The ultra-short-term wind power forecasting accuracy is further improved by using error correction in terms of normalized root mean squared error (NRMSE)

Corroboree or native dance at Durhambak on the banks of the upper Manning, New England, Australia, 1 [picture] /

Attributed to Henry Darcy by Rex Nan Kivell. Evidence supplied by a researcher identifies the artist as Henry Danger, with it being likely that the attribution to Henry Darcy was a result of transcription errors in the years prior to acquisition by Rex Nan Kivell.; Rex Nan Kivell Collection NK213.; The modern location of Durhambak is uncertain, however it may be Durhambah on the lower Manning near Taree rather than being in the New England region.; Title from inscription on mount.; (ANL)T2696

Index and directory to map of the country bordering upon the River Hunter : the lands of the Australian-Agricultural Company, with the ground plan and allotments of King's Town, New South Wales : containing a detail of the annual quit rent and amount of the redemption of the same ; also historical notes upon the tenure and principle of granting lands in the colony since 1810 ; also for the guidance of emigrant settlers, a description of the unlocated country in the vicinity of Hunter's River ; useful geographical notes on Liverpool Plains ; the present regulations and conditions upon which grants and sales of land are made by government, with observations thereon, with a view of the present state of agriculture in the colony, price of land, advice to settlers, &c. the whole forming with regard to land affairs in that colony, a complete emigrant's guide /

With: Map of the River Hunter, and its branches : shewing the Lands reserved thereon for Church purposes, the Locations made to Settlers, and the Settlement and part of the Lands of the Australian Agricultural Company at Port Stephens together with the Station of the Mission to the Aborigines belonging to the London Missionary Society on Lake Macquarie, New South Wales / engraved and published August 1st. 1828, by J. Cross, 18 Holborn, opposite Furnivals Inn, London. To Lieut. General Sir Thos. McDugall Brisbane, KCB, late Governor in Chief of N.S. Wales and its dependencies, to whose liberal administration the Colony is much indebted for her present Wealth and Respectability, This Map in remembrance thereof is respecfully dedicated, by his Obliged & Obedt. Servant, Henry Dangar / engraved and published August 1st. 1828, by J. Cross, 18 Holborn, opposite Furnivals Inn, London. To Lieut. General Sir Thos. McDugall Brisbane, KCB, late Governor in Chief of N.S. Wales and its dependencies, to whose liberal administration the Colony is much indebted for her present Wealth and Respectability, This Map in remembrance thereof is respecfully dedicated, by his Obliged & Obedt. Servant, Henry Dangar.; One of Library's copies bound with F2234. ANL; Library's FRM F1184 (FC) copy bears the bookplate of James Edge-Partington. ANL; Ferguson, J.A. Australia, 1184; Also available in an electronic version via the Internet: http://nla.gov.au/nla.aus-vn4977259

Corroboree or native dance at Durhambak on the banks of the upper Manning, New England, Australia, 2 [picture] /

Attributed to Henry Darcy by Rex Nan Kivell. Evidence supplied by a researcher identifies the artist as Henry Danger, with it being likely that the attribution to Henry Darcy was a result of transcription errors in the years prior to acquisition by Rex Nan Kivell.; Rex Nan Kivell Collection NK212.; The modern location of Durhambak is uncertain, however it may be Durhambah on the lower Manning near Taree rather than being in the New England region.; Title from inscription on mount.; (ANL)T2695

A Review: Crinum asiaticum

Crinum asiaticum (Amaryllidaceae) commonly known as Nagdovan in Gujarati is distributed throughout India. The plant is used traditionally in warm infestation. Medicinally, it has been proven to possess various pharmacological activities like antitumour, anti inflammatory, antimicrobial, antiemetic, antiuretic, haemogogue, and anthelmintic activities. Further, studies reveal the presence of various phytochemical constituents mainly phenolics, alkaloids and fatty acids. These studies reveals that Crinum asiaticum is a source of medicinally active compounds and having a various important pharmacological effects so this drug encourage finding its new therapeutic uses.Keywords: Amaryllidaceae, Antitumor, Crinum asiaticum, Nagdovan

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Optimization and characterization of chromium(VI) reduction in saline condition by moderately halophilic Vigribacillus sp isolated from mangrove soil of Bhitarkanika, India

A Gram-positive moderately halophilic Cr(VI) tolerant bacterial strain H4, isolated from saline mangrove soil, was identified as Vigribacillus sp. by biochemical characterization and 16S rRNA analysis. In LB medium, the strain could tolerate up to 1000 mg L−1 Cr(VI) concentra-tion and reduced 90.2 and 99.2% of 100 mg L−1 Cr(VI) under optimized set of condition within 70 h in absence and presence of 6 wt.% NaCl, respectively. The fitting of time course reduction data to an exponential rate equation yielded the Cr(VI) reduction rate constants in the range (0.69–5.56) × 10−2 h−1. Analyses of total chromium and bacterial cell associated with reduced product by AAS, SEM/EDS, TEM/SAED, FT-IR and UV–vis–DRS indicated the formation of about 35% of insoluble Cr(III) either as Cr(OH)3 precipitate in nanometric size or immobilized on the bacterial cell surface while the remaining 65% of reduced chromium was present as soluble Cr(III) in the growth medium. Powder XRD analysis revealed the amorphous nature of the precipitated Cr(OH)3. The high Cr(VI) reducing ability of the strain under saline condition suggests the Vigribacillus sp. as a new and efficient strain capable of remediating highly saline Cr(VI) polluted industrial effluent

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