153 kr
Skickas inom 5-8 vardagar
153 kr
Skickas inom 5-8 vardagar
182 kr
Skickas inom 5-8 vardagar
1 272 kr
Skickas inom 10-15 vardagar
1 744 kr
Läs direkt efter köp
519 kr
Skickas inom 10-15 vardagar
906 kr
Läs direkt efter köp
915 kr
Läs direkt efter köp
840 kr
Skickas inom 5-8 vardagar
This volume sets out for the first time the historical and current status of all the bird species found in Wales together with their present distribution. The rugged countryside of Wales has long been a destination for successive generations of naturalists, ornithologists, oologists and, latterly, birdwatchers. Since the pioneering days of Willoughby and Ray, Pennant and Edward Llwyd, a growing number of intrepid travellers have recorded the wildlife and other natural riches of the mountains and coastlines of Wales. Despite these beginnings and the more recent twentieth century vogue for birdwatching, no volume on the birds of Wales has been produced until now to serve the increasing need for scientifically valid information for conservation purposes. In the years that have passed since the first naturalists visited Wales, changes of unimaginable scale have taken place in the Welsh countryside which have had equally dramatic impacts on the native bird communities. A succession of bird species have either been eliminated deliberately by the hand of man - mainly birds of prey - or have been dispossessed by changes in land use, the spread of industrialisation, urbanisation and pollution, trends which continue today to the increasing detriment of even some of our most familiar countryside birds. Much fine habitat remains however, and new species have come in to colonise Wales and add to the magic of its countryside. The three authors, all staff of the RSPB in Wales, have between them an accumulated experience of some 80 years of first-hand knowledge of birds in the Principality. Their knowledge and love of the birds and Wales itself makes this authoritative volume a landmark both in Welsh and ornithological publishing.
1 026 kr
Skickas inom 10-15 vardagar
1 260 kr
Läs direkt efter köp
Data mining is the art and science of intelligent data analysis. By building knowledge from information, data mining adds considerable value to the ever increasing stores of electronic data that abound today. In performing data mining many decisions need to be made regarding the choice of methodology, the choice of data, the choice of tools, and the choice of algorithms.
Throughout this book the reader is introduced to the basic concepts and some of the more popular algorithms of data mining. With a focus on the hands-on end-to-end process for data mining, Williams guides the reader through various capabilities of the easy to use, free, and open source Rattle Data Mining Software built on the sophisticated R Statistical Software. The focus on doing data mining rather than just reading about data mining is refreshing.
The book covers data understanding, data preparation, data refinement, model building, model evaluation, and practical deployment. The reader will learn torapidly deliver a data mining project using software easily installed for free from the Internet. Coupling Rattle with R delivers a very sophisticated data mining environment with all the power, and more, of the many commercial offerings.
38 kr
Läs direkt efter köp
231 kr
Skickas inom 5-8 vardagar
188 kr
Lyssna direkt efter köp
An unabridged reading of this novelisation of a ''missing'' TV adventure featuring the Celestial Toymaker."Slick and polished...immersive productions of much-loved novelisations...long may we enjoy them." - Doctor Who MagazineDrawn into ''the nexus of the primeval cauldron of Space-Time'', the Doctor and Peri are somewhat surprised to find themselves at Blackpool Pleasure Beach.Is it really just chance that has brought them to the funfair? Or is their arrival somehow connected with the sinister presence of a rather familiar Chinese Mandarin?Once again the Doctor encounters his deadly adversary the Celestial Toymaker in this adventure by Graham Williams, planned but never made for the TV series in 1986.Reading produced by Neil Gardner/Ladbroke Audio.Sound design by Simon Power.Executive producer for BBC Audio: Michael Stevens© 2023 BBC Studios Distribution Ltd (P) 2023 BBC Studios Distribution Ltd
164 kr
Skickas
573 kr
Skickas inom 10-15 vardagar
739 kr
Läs direkt efter köp
573 kr
Skickas inom 10-15 vardagar
739 kr
Läs direkt efter köp
1 139 kr
Skickas inom 10-15 vardagar
1 470 kr
Läs direkt efter köp
This book constitutes the refereed proceedings of the 15th Australasian Conference on Data Mining, AusDM 2017, held in Melbourne, VIC, Australia, in August 2017.
The 17 revised full papers presented together with 11 research track papers and 6 application track papers were carefully reviewed and selected from 31 submissions. The papers are organized in topical sections on clustering and classification; big data; time series; outlier detection and applications; social media and applications.
754 kr
Skickas inom 10-15 vardagar
930 kr
Läs direkt efter köp
The 20 revised full papers presented were carefully reviewed and selected from 56 submissions. The papers are organized in sections on research track, application track, and industry showcase.
856 kr
Skickas inom 10-15 vardagar
1 037 kr
Läs direkt efter köp
*Due to the COVID-19 pandemic the conference was held online.
856 kr
Skickas inom 10-15 vardagar
1 007 kr
Läs direkt efter köp
422 kr
Tillfälligt slut