Download or read book Data Reconstruction from a Hard Disk Drive Using Magnetic Force Microscopy written by Vasu Kanekal and published by . This book was released on 2013 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to determine whether or not the data written on a modern high-density hard disk drive can be recovered via magnetic force microscopy of the disks' surface. To this end, a variety of image processing techniques are utilized to process the raw images into a readily usable form, and subsequently, a simulated read channel is designed to produce an estimate of the raw data corresponding to the magnetization pattern written on the disk. Using a specially prepared hard disk drive, the performance of this process is analyzed and techniques to improve it are investigated. Finally, some interesting results about maximal length shift register sequences are presented.

Download or read book Spin stand Microscopy of Hard Disk Data written by Isaak D. Mayergoyz and published by Elsevier. This book was released on 2010-07-07 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth exposition of spin-stand microscopy of hard disk data which is a new technique recently developed and extensively tested by the authors of the book. Spin-stand microscopy is the first magnetic imaging technique where imaging is performed ex-situ on a rotating disk mounted on a spin-stand. This technique is one of the fastest scanning-based microscopy techniques. It is non-invasive and has nano-scale resolution. For these reasons, it provides unique capabilities for the visualization of magnetization patterns recorded on hard disks. This book is self-contained and it covers in sufficient details the basic facts of magnetic data storage technology, the principles and theory of spin-stand microscopy, its experimental implementations, as well as its applications in hard disk diagnostics, imaging of overwritten patterns, computer forensics of hard disk files, and data-dependent magnetic thermal relaxations of recorded magnetization patterns. This book will be a valuable reference for the magnetic data storage community, magnetic microscopy professionals as well as engineers and scientists involved in computer data forensics, commercial data recovery, and the design of archival data storage systems. Conceptual novelty of the technique and the demonstration of its wide scope of applications Detailed exposition of the principles of spin-stand magnetic microscopy Comprehensive discussions of novel image reconstruction techniques Demonstration of high resolution spin-stand images of hard disk data Presentation of sector-by-sector ex-situ forensics of hard disk files Extensive studies of data-dependent thermal relaxations of magnetization patterns recorded on hard disks

Download or read book The Reconstruction of Magnetic Force Microscopy Images and Its Application to High Density Magnetic Recording written by Rajiv Madabhushi and published by . This book was released on 1996 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Data Recovery from Magnetic Media Using Magnetic Force Microscopy written by Terry R. Ferrett and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Essential Image Processing for Magnetic Resonance Force Microscopy written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers work performed on two-dimensional and three-dimensional reconstruction of magnetic images derived from synthetic data sets of a model magnetic-resonance force microscope. Specifically, Pixon LLC has employed its proprietary Pixon-method image reconstruction algorithm in order to perform the reconstructions. We find that the algorithm yields excellent results, in particular as regards image accuracy, resolution, and suppression of noise. A specific and robust regimen for performing the reconstructions within the Pixon-method paradigm has been developed. The regimen is robust against varying signal-to-noise ratio and varying tip-to-sample separation in the MRFM instrument model. Moreover, a data-capture scanning strategy has been discovered that optimizes performance of the reconstruction (resolution and sensitivity) while simultaneously minimizing the data acquisition time. These results should make straightforward the application of the algorithm in a real-world instrument. The results also favor adaptation of Pixon- method image reconstruction techniques to three-dimensional imaging with conventional magnetic-force microscopes.

Download or read book Texture Induced Variations in Switching Fields of Hard Disk Media Investigated by Magnetic Force Microscopy written by Albrecht Jander and published by . This book was released on 1999 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Full Vector Magnetization Reconstruction from Magnetic Force Microscopy Images in Longitudinal Recording Media written by Chi-Chun Hsu and published by . This book was released on 2001 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wear Characterisation of Magnetic Hard Disk Coatings Using Atomic Force Microscope written by Yijun Man and published by . This book was released on 1997 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Data Storage System Based on Patterned Magnetic Media and Magnetic Force Microscopy written by Jungmok Bae and published by . This book was released on 1999 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Fields for Computer Scientists and Engineers written by Robert J. McEliece and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book developed from a course on finite fields I gave at the University of Illinois at Urbana-Champaign in the Spring semester of 1979. The course was taught at the request of an exceptional group of graduate students (includ ing Anselm Blumer, Fred Garber, Evaggelos Geraniotis, Jim Lehnert, Wayne Stark, and Mark Wallace) who had just taken a course on coding theory from me. The theory of finite fields is the mathematical foundation of algebraic coding theory, but in coding theory courses there is never much time to give more than a "Volkswagen" treatment of them. But my 1979 students wanted a "Cadillac" treatment, and this book differs very little from the course I gave in response. Since 1979 I have used a subset of my course notes (correspond ing roughly to Chapters 1-6) as the text for my "Volkswagen" treatment of finite fields whenever I teach coding theory. There is, ironically, no coding theory anywhere in the book! If this book had a longer title it would be "Finite fields, mostly of char acteristic 2, for engineering and computer science applications. " It certainly does not pretend to cover the general theory of finite fields in the profound depth that the recent book of Lidl and Neidereitter (see the Bibliography) does.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms written by Matthew G. Kirschenbaum and published by MIT Press. This book was released on 2008 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new "textual studies" and archival approach to the investigation of works of new media and electronic literature that applies techniques of computer forensics to conduct media-specific readings of William Gibson's electronic poem "Agrippa," Michael Joyce's Afternoon, and the interactive game Mystery House.

Download or read book Essentials of Paleomagnetism written by Lisa Tauxe and published by Univ of California Press. This book was released on 2010-03-19 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book by Lisa Tauxe and others is a marvelous tool for education and research in Paleomagnetism. Many students in the U.S. and around the world will welcome this publication, which was previously only available via the Internet. Professor Tauxe has performed a service for teaching and research that is utterly unique."—Neil D. Opdyke, University of Florida

Download or read book Magnetic Resonance Imaging written by Robert W. Brown and published by John Wiley & Sons. This book was released on 2014-06-23 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition explores contemporary MRI principles and practices Thoroughly revised, updated and expanded, the second edition of Magnetic Resonance Imaging: Physical Principles and Sequence Design remains the preeminent text in its field. Using consistent nomenclature and mathematical notations throughout all the chapters, this new edition carefully explains the physical principles of magnetic resonance imaging design and implementation. In addition, detailed figures and MR images enable readers to better grasp core concepts, methods, and applications. Magnetic Resonance Imaging, Second Edition begins with an introduction to fundamental principles, with coverage of magnetization, relaxation, quantum mechanics, signal detection and acquisition, Fourier imaging, image reconstruction, contrast, signal, and noise. The second part of the text explores MRI methods and applications, including fast imaging, water-fat separation, steady state gradient echo imaging, echo planar imaging, diffusion-weighted imaging, and induced magnetism. Lastly, the text discusses important hardware issues and parallel imaging. Readers familiar with the first edition will find much new material, including: New chapter dedicated to parallel imaging New sections examining off-resonance excitation principles, contrast optimization in fast steady-state incoherent imaging, and efficient lower-dimension analogues for discrete Fourier transforms in echo planar imaging applications Enhanced sections pertaining to Fourier transforms, filter effects on image resolution, and Bloch equation solutions when both rf pulse and slice select gradient fields are present Valuable improvements throughout with respect to equations, formulas, and text New and updated problems to test further the readers' grasp of core concepts Three appendices at the end of the text offer review material for basic electromagnetism and statistics as well as a list of acquisition parameters for the images in the book. Acclaimed by both students and instructors, the second edition of Magnetic Resonance Imaging offers the most comprehensive and approachable introduction to the physics and the applications of magnetic resonance imaging.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Magnetic Microscopy of Nanostructures written by Herbert Hopster and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive collection of overview articles on novel microscopy methods for imaging magnetic structures on the nanoscale. Written by leading scientists in the field, the book covers synchrotron based methods, spin-polarized electron methods, and scanning probe techniques. It constitutes a valuable source of reference for graduate students and newcomers to the field.