A text introductorio, absolutely unpublished, that explains to chemistries, and also to geologists and biologos, like can suitably select the statistical techniques that allow them to obtain the Maxima excellent information from the data of the investigations.
Esta segunda parte del libro "Trends in Electrochemistry and Corrosion at the beginning of the 21st century", dedicado al Prof. Josep M. Costa en ocasión de su 70 aniversario, recoge un total de 40 artículos y revisiones originales, tanto científicas como tecnológicas, correspondientes al campo de la Corrosión. Estos trabajos están escritos en español e inglés por unos 140 investigadores de todo el mundo, y muestran el enorme desarrollo de la investigación internacional en diversas materias de gran interés en la Corrosión de principios de este siglo XXI. Los trabajos se han agrupado en 5 capítulos generales que versan sobre los campos de Corrosión en Ambientes Corrosivos Seleccionados, Protección contra la Corrosión y Monitorización, Recubrimientos, Nuevos Materiales y Tratamientos, y Educación en la Corrosión....This second part of the book "Trends in Electrochemistry and Corrosion at the beginning of the 21st century", dedicated to Professor Josep M. Costa in occasion of his 70th birthday, collects 40 original papers and reviews, both scientific and technologic, corresponding to the field of Corrosion. These works are written in English and Spanish by about 140 researchers of all around the world and show the large development of the international research in several topics of great interest in Corrosion at the beginning of the 21st Century. The works have been gathered into five general chapters devoted to the fields of Corrosion in Selected Environments, Corrosion Protection and Monitoring, Coatings, New Materials and Treatments, and Corrosion Education
(Dissertation is written in Spanish.) Using PSpice of MiscroSim to simulate power converters sometimes brings awkward complications such as the simulation of real magnetic components. It deals a little bit of work to bring a good agreement between experimental and simulated results. Simulation with linear inductors or transformers does not produce good results. The reason is that real magnetic components present saturation and hysteresis, a phenomenon that characterises magnetic materials. The hysteresis or B-H loop of a magnetic component is highly dependent on frequency, waveform (not very important for ferrite material), temperature, excitation level, etc. Although PSpice includes in its magnetic library a list of non-linear components, rarely these parameters are coincident with our working conditions or simply they are not specified. In all of these cases it is necessary the modelling of non-linear magnetic cores for each particular application. Here we present a systematic procedure to obtain real PSpice parameters to model magnetic materials using the Jiles & Atherton theory. The procedure is totally general and models the static B-H loop given by any manufacturer as well as the one that can be obtained in accordance with some specific working conditions. This is really important, since it helps the designer in obtaining model parameters for any high frequency applications, which are not correctly presented in PSpice libraries. The modelled magnetic material is used for power electronics circuit simulation, which uses magnetic materials, working at frequencies in the region of kH, to construct transformers and inductors. Magnetic materials are the most critical components in electronics simulators due to their non-linear behaviour. This work examines the modelling of the magnetic core hysteresis for high-frequency applications. As example of application, a buck converter with their inductor working near saturation is implemented and their experimental waveforms are compared with the simulated ones obtained with this model. With this procedure a good concordance between experimental and simulated B-H loop is obtained and the simulation of the power converter is reached properly.
These proceedings derive from an international conference on the history of computing and education. This conference is the second of hopefully a series of conferences that will take place within the International Federation for Information Processing (IFIP) and hence, we describe it as the "Second IFIP Conference on the History of Computing and Education" or simply "History of Computing and Education 2" (HCE2). This volume consists of a collection of articles presented at the HCE2 conference held in association with the IFIP 2006 World Computer Congress in Santiago, Chile. Articles range from a wide variety of educational and computing perspectives and represent activities from five continents. The HCE2 conference represents a joint effort of the IFIP Working Group 9. 7 on the History of Computing and the IFIP Technical Committee 3 on Education. The HCE2 conference brings to light a broad spectrum of issues. It illustrates topics in computing as they occurred in the "early days" of computing whose ramifications or overtones remain with us today. Indeed, many of the early challenges remain part of our educational tapestry; most likely, many will evolve into future challenges. Therefore, these proceedings provide additional value to the reader as it will reflect in part the future development of computing and education to stimulate new ideas and models in educational development. These proceedings provide a spectrum of interesting articles spanning many topics of historical interest.
This bestselling professional reference has helped over 100,000 engineers and scientists with the success of their experiments. The new edition includes more software examples taken from the three most dominant programs in the field: Minitab, JMP, and SAS. Additional material has also been added in several chapters, including new developments in robust design and factorial designs. New examples and exercises are also presented to illustrate the use of designed experiments in service and transactional organizations. Engineers will be able to apply this information to improve the quality and efficiency of working systems.
Written in Spanish by an experienced instructor, this textbook introduces students with no prior background in linguistics to the syntax of Spanish, exploring the building blocks of complex linguistic expressions. Variations across Spanish are highlighted and varieties spoken by bilinguals are included. New concepts are clearly presented through a gradual progression from simpler to more complex concepts, with definitions of key terms highlighted in boxes. Recent theoretical developments are presented in a theory-neutral framework, offering students a balanced perspective. Chapter learning objectives, numerous detailed examples, and summaries, enable students to build a solid knowledge and understanding of syntactic ideas from scratch. Both advanced and introductory exercises are included in every chapter, allowing students at all levels to put concepts into practice. Further reading suggestions, and expansion boxes highlight more complex developments, providing students with a platform for further exploration. This is an essential resource for introductory courses on Spanish syntax and linguistics.