1. Los números enteros 2. Las fracciones 3. Los números decimales 4. Proporcionalidad y porcentajes 5. Expresiones algebraicas 6. Ecuaciones de primer y segundo grado 7. Sistemas de ecuaciones lineales 8. Funciones 9. Proporcionalidad geométrica 10. Cuerpos geométricos 11. Longitudes, áreas y volúmenes 12. Estadística y probabilida

Soil and Sediment Remediation discusses in detail a whole set of remediative technologies currently available to minimise their impact. Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects of these technologies will be addressed. Special attention will be given to novel biotechnological processes that utilise sulfur cycle conversions, e.g. sulfur and heavy metal removal from soils. Also the potential of phytoremediation will be highlighted. In addition, treatment schemes for the clean-up of polluted megasites, e.g. harbours and Manufactured Gaswork Plants (MGP), will be elaborated. The aim of Soil and Sediment Remediation is to introduce the reader in: the biogeochemical characteristics of soil and sediments- new techniques to study soil/sediment processes (molecular probes, microelectrodes, NMR) clean up technologies for soils polluted with organic (PAH, NAPL, solvents) or inorganic (heavy metals) pollutants- preventative and remediative strategies and technologies available in environmental engineering novel process applications and bioreactor designs for bioremediation the impact of soil pollution on society and its economic importance.

This well known text helps students understand the art of model building - what type of model to build, building the appropriate model, testing it statistically, and applying the model to practical problems in forecasting and analysis.

From award-winning author Ken Liu comes his much anticipated second volume of short stories. Ken Liu is one of the most lauded short story writers of our time. This collection includes a selection of his science fiction and fantasy stories from the last five years—sixteen of his best—plus a new novelette. In addition to these seventeen selections, The Hidden Girl and Other Stories also features an excerpt from book three in the Dandelion Dynasty series, The Veiled Throne.

Discover frightening—and sometimes hilarious—visions of the future in this science fiction anthology featuring 12 short stories by Nebula and Hugo Award winners! New and established voices in science fiction offer original stories of the future. Tales from Who Fears Death’s Nnedi Okorafor, The Three-Body Problem’s Cixin Liu, and others reveal metal-melting viruses, vegetable-based heart transplants, search-and-rescue drones, and semi-automated sailing ships. Inside you’ll also find: • Ken Liu writes about a virtual currency that hijacks our empathy. • Elizabeth Bear shows us a smart home tricked into kidnapping its owner. • Clifford V. Johnson writes of a computer scientist seeing a new side of the artificial intelligence she invented. • J. M. Ledgard describes a 28,000-year-old AI who meditates on the nature of loneliness. Featuring a diverse collection of authors, characters, and stories rooted in contemporary real-world science, each volume in the Twelve Tomorrows series offers an inclusive and conceivable vision of the future—and celebrates the genre of hard science fiction pioneered by authors such as Isaac Asimov, Arthur C. Clarke, and Robert Heinlein. Contributors Elizabeth Bear, SL Huang, Clifford V. Johnson, J. M. Ledgard, Cixin Liu, Ken Liu, Paul McAuley, Nnedi Okorafor, Malka Older, Sarah Pinsker, Alastair Reynolds

This Open Access book summarizes the key findings from the second cycle of IEA’s International Computer and Information Literacy Study (ICILS), conducted in 2018. ICILS seeks to establish how well schools around the globe are responding to the need to provide young people with the necessary digital participatory competencies. Effective use of information and communication technologies (ICT) is an imperative for successful participation in an increasingly digital world. ICILS 2018 explores international differences in students’ computer and information literacy (CIL), namely their ability to use computers to investigate, create, and communicate at home, at school, in the workplace, and in the community. Participating countries also had an option to administer an assessment of students’ computational thinking (CT), focused on their ability to recognize aspects of real-world problems appropriate for computational formulation, and to evaluate and develop algorithmic solutions to those problems, so that the solutions could be operationalized with a computer. The data collected by ICILS 2018 show how digital competencies can be assessed using instruments representing authentic contexts for ICT use, and how students’ CIL and CT skills relate to school learning experiences, out-of-school contexts, and student characteristics. Those data also show how learning technologies are used in classrooms around the world. Background questionnaires asked students about their use of ICT, and collected information from teachers, schools, and national education systems about the resourcing and teaching of CIL (and CT) within their countries. The results of ICILS 2018 will enable policymakers and education systems to develop a better understanding of the contexts and outcomes of CIL (and CT) education programs.