Revised and expanded to reflect the most recent innovations in the field, The Scientific Examination of Documents, Fourth Edition is a handy, accessible volume detailing current best-practices for forensic document examination. Since the first edition published in 1989, there have been drastic changes in the field of forensic document examination-both from the use of the analytic techniques available to the professional examiner-and the changes to technology in office and printing equipment and inks. The purpose of analyzing any material used in the production of a questioned document, such as an ink or a piece of paper, is to compare it with another material elsewhere in the questioned document itself-or on another document-to determine whether or not they share a common origin. There may also be a need to provide information for the investigator about the possible origins of the document. This latest edition reflects the myriad changes and advances that have occurred in the last 10 to 15 years. Topics covered include: current thinking on handwriting interpretation; accidental and deliberate modification of handwriting; the proper collection of samples; a discussion of shredded documents; professional accreditation standards, qualifications, and training; and modern digital imaging and analysis of documents and handwriting utilizing software and imaging, including reconstruction of an image from erasures, obliteration and other document altering methods. A new section addresses cognitive bias and Chapter 8 is completely updated to cover the advances in print and photocopied documents, based on current technology, and analytical developments in the comparison of such documents. Key features: Discusses issues regarding handwritten, photocopied, and printed documents-including inkjet versus digital printing Presents the advances and capabilities modern office fax, photocopy, and printing technologies-and implications for document examination Details and reinforces the importance of ensuring proper scientific methods during an examination Addresses current Raman spectroscopy, UV-VIS, mass spectroscopy, and SEM analysis techniques Highlights the importance, and implications, of biological and fingerprint evidence from documents that can be collected, examined, and utilized in a case The Scientific Examination of Documents, Fourth Edition serves as an invaluable resource to established professionals, those just entering the field, and legal and investigative professionals outside the discipline who have a professional interest dealing with questioned documents in the course of their work.

Prison Time in Sana'a tells the story of Dr Abdulkader Al-Guneid's harrowing experience inside jail in Yemen's capital shortly after it was taken over by Houthi rebels. In his hometown of Taiz, Al-Guneid, a medical doctor, had been an outspoken figure on Yemeni politics for decades. In recent years, his social media and interviews were read around the world and attracted a global following from an audience anxious to hear an unbiased explanation of the underlying roots of the conflict. Ultimately, his activism placed him in the movement's crosshairs, leading to his abduction on 5 August 2015 and incarceration in an undisclosed Houthi jail in Sana'a. For the next 300 days, Al-Guneid shared his time with American hostages, Houthi fighters, Al Qaeda militants and ordinary Yemenis caught up in the chaos of war. Following his release, he wrote about his experience in exhaustive and gripping detail from exile in Canada. Initially typing his entire account on his mobile phone, his story has since been distilled into a deeply personal account of his incarceration offering an extraordinarily candid perspective on the Yemen crisis from deep within Houthi-held territory.

Revised and expanded to reflect the most recent innovations in the field, The Scientific Examination of Documents, Fourth Edition is a handy, accessible volume detailing current best-practices for forensic document examination. Since the first edition published in 1989, there have been drastic changes in the field of forensic document examination-both from the use of the analytic techniques available to the professional examiner-and the changes to technology in office and printing equipment and inks. The purpose of analyzing any material used in the production of a questioned document, such as an ink or a piece of paper, is to compare it with another material elsewhere in the questioned document itself-or on another document-to determine whether or not they share a common origin. There may also be a need to provide information for the investigator about the possible origins of the document. This latest edition reflects the myriad changes and advances that have occurred in the last 10 to 15 years. Topics covered include: current thinking on handwriting interpretation; accidental and deliberate modification of handwriting; the proper collection of samples; a discussion of shredded documents; professional accreditation standards, qualifications, and training; and modern digital imaging and analysis of documents and handwriting utilizing software and imaging, including reconstruction of an image from erasures, obliteration and other document altering methods. A new section addresses cognitive bias and Chapter 8 is completely updated to cover the advances in print and photocopied documents, based on current technology, and analytical developments in the comparison of such documents. Key features: Discusses issues regarding handwritten, photocopied, and printed documents-including inkjet versus digital printing Presents the advances and capabilities modern office fax, photocopy, and printing technologies-and implications for document examination Details and reinforces the importance of ensuring proper scientific methods during an examination Addresses current Raman spectroscopy, UV-VIS, mass spectroscopy, and SEM analysis techniques Highlights the importance, and implications, of biological and fingerprint evidence from documents that can be collected, examined, and utilized in a case The Scientific Examination of Documents, Fourth Edition serves as an invaluable resource to established professionals, those just entering the field, and legal and investigative professionals outside the discipline who have a professional interest dealing with questioned documents in the course of their work.

This book introduces magnetic bearings--mechatronic devices that produce contact-free electromagnetic force to support a load, such as a moving train or a spinning rotor. Compared to traditional bearings, magnetic bearings offer several advantages: no friction, low heat generation, no required lubrication, quiet operation, and fast and stable rotation. For these reasons, magnetic bearings have been used in rotary ventricular assist devices (VADs) to increase design life, reduce or eliminate material wear and bearing maintenance, as well as to increase biocompatibility by eliminating high fluid stresses and heat generation, both of which are associated with hemolysis, platelet activation and aggregation, and thrombus growth. The book covers the principles of these bearings, how they are used in integrated control and electronics systems, and useful information on several major brands of current assist devices.