New Perspectives in the Use of Ink Evidence in Forensic Science

Download New Perspectives in the Use of Ink Evidence in Forensic Science PDF Online Free

Author :
Publisher :
ISBN 13 : 9782940098439
Total Pages : 163 pages
Book Rating : 4.0/5 (984 download)

DOWNLOAD NOW!


Book Synopsis New Perspectives in the Use of Ink Evidence in Forensic Science by : Cédric Neumann

Download or read book New Perspectives in the Use of Ink Evidence in Forensic Science written by Cédric Neumann and published by . This book was released on 2008 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Foundations of Forensic Document Analysis

Download Foundations of Forensic Document Analysis PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118729935
Total Pages : 276 pages
Book Rating : 4.1/5 (187 download)

DOWNLOAD NOW!


Book Synopsis Foundations of Forensic Document Analysis by : Michael J. Allen

Download or read book Foundations of Forensic Document Analysis written by Michael J. Allen and published by John Wiley & Sons. This book was released on 2015-09-28 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forensic document examination is a long established specialty and its practitioners have regularly been shown to have acquired skills that enable them to assist the judicial process. This book, aimed primarily at students studying forensic science and document examination in particular, introduces all of the essential ideas that are to be found in the work of the forensic document examiner in a concise and straightforward way. Each examination type is described not only in terms of its procedural basis but also the science and reasoning that underpins it. The reader will be able to relate the different kinds of interpretation skills used by the document examiner to those used in other forensic disciplines. This book will be an invaluable text for all students taking courses in Forensic Science or related subjects. The book will also be a useful reference for researchers new to this field or practitioners looking for an accessible overview. The author will be adding new references that are relevant as they are published and some more worked examples from time to time. Please visit qdbook.blogspot.co.uk for more details.

Handbook of Analytical Techniques for Forensic Samples

Download Handbook of Analytical Techniques for Forensic Samples PDF Online Free

Author :
Publisher : Elsevier
ISBN 13 : 0128223014
Total Pages : 480 pages
Book Rating : 4.1/5 (282 download)

DOWNLOAD NOW!


Book Synopsis Handbook of Analytical Techniques for Forensic Samples by : Chaudhery Mustansar Hussain

Download or read book Handbook of Analytical Techniques for Forensic Samples written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2020-11-28 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Analytical Techniques for Forensic Samples: Current and Emerging Developments discusses in detail the current trends and latest analytical techniques and methods commonly employed in forensic analysis in order to ensure the proper facilitation of justice. This book is useful for readers who wish to stay updated on the latest trends in the forensic analysis of samples encountered at crime scenes. Technological advancements, such as biosensors, nanotechnology, and taggant technology have upped the level of analysis in forensic science. These emergent technologies, incorporated with existing analytical techniques, are leading to more precise, accurate, and specific examination of forensic samples. Lab-on-a-chip technology has also eased several kinds of on-site analyses done by investigating teams at different types of crime scenes. This book covers the evolution of forensic sample analysis as well as these emerging trends and new technologies. Includes an entire section of experimental exercises for self-teaching and key concept review Covers laboratory protocols used in forensic science laboratories for the analysis of various samples through different analytical techniques Condenses the many aspects of forensic analytical chemistry into a single resource with easy-to-understand language for everyone from students to practitioners

Instrumental Thin-Layer Chromatography

Download Instrumental Thin-Layer Chromatography PDF Online Free

Author :
Publisher : Elsevier
ISBN 13 : 0124172849
Total Pages : 665 pages
Book Rating : 4.1/5 (241 download)

DOWNLOAD NOW!


Book Synopsis Instrumental Thin-Layer Chromatography by : Colin Poole

Download or read book Instrumental Thin-Layer Chromatography written by Colin Poole and published by Elsevier. This book was released on 2014-09-22 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: Instrumental Thin-Layer Chromatography delivers comprehensive coverage of this separation tool with particular emphasis on how this tool can be used in advanced laboratories and integrated into problem-solving scenarios. Significant improvements in instrumentation have outpaced the development of information resources that describe the latest state-of-the-art and demonstrate the full capabilities of TLC. This book provides a contemporary picture of the fundamentals and practical applications of TLC at a level suitable for the needs of professional scientists with interests in project management where TLC is a common tool. Compact, highly focused chapters convey essential information that defines modern TLC and how it can be effectively implemented in most areas of laboratory science. Numerous figures and tables provide access to material not normally found in a single source yet are required by working scientists. Contributions written by recognized authoritative and visionary experts Focuses on state-of-the-art instrumental thin-layer chromatography and advanced applications across many areas Provides guidance on the analysis of complex, dirty mixtures of compounds Offers a cost-effective analytic technique for laboratories working under strict budgets

Forensic Science

Download Forensic Science PDF Online Free

Author :
Publisher : Taylor & Francis
ISBN 13 : 143985386X
Total Pages : 602 pages
Book Rating : 4.4/5 (398 download)

DOWNLOAD NOW!


Book Synopsis Forensic Science by : Stuart H. James

Download or read book Forensic Science written by Stuart H. James and published by Taylor & Francis. This book was released on 2014-01-13 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering a range of fundamental topics essential to modern forensic investigation, the fourth edition of the landmark text Forensic Science: An Introduction to Scientific and Investigative Techniques presents contributions from experts in the field who discuss case studies from their own personal files. This edition has been thoroughly updated to r

Modeling and Simulation of Functional Nanomaterials for Forensic Investigation

Download Modeling and Simulation of Functional Nanomaterials for Forensic Investigation PDF Online Free

Author :
Publisher : IGI Global
ISBN 13 : 1668483270
Total Pages : 397 pages
Book Rating : 4.6/5 (684 download)

DOWNLOAD NOW!


Book Synopsis Modeling and Simulation of Functional Nanomaterials for Forensic Investigation by : Rakha, Allah

Download or read book Modeling and Simulation of Functional Nanomaterials for Forensic Investigation written by Rakha, Allah and published by IGI Global. This book was released on 2023-06-12 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology continues to contribute to the progress of innovations in the area of forensic science ranging from sensing, DNA monitoring, and counterfeiting to fingerprinting. In recent years, functional nanomaterials are widely applied in nanoscience and forensic investigation. They can be used in future interdisciplinary research by scientists, engineers, and biotechnologists. Modeling and Simulation of Functional Nanomaterials for Forensic Investigation focuses on multiple applications related to forensics and provides information linked with nanoparticles. This book provides nanotechnology results in improving the sensitivity of established forensic techniques. It further focuses on different fabrication and characterization techniques of nanomaterials and relates their characteristics with forensic applications. Covering topics such as explosive detection, nano-forensic testing, and nano-trackers, this premier reference source is a comprehensive resource for material engineers, chemical engineers, nanotechnologists, biotechnologists, forensic scientists, students and educators of higher education, researchers, and academicians.

Handbook of Trace Evidence Analysis

Download Handbook of Trace Evidence Analysis PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118962109
Total Pages : 480 pages
Book Rating : 4.1/5 (189 download)

DOWNLOAD NOW!


Book Synopsis Handbook of Trace Evidence Analysis by : Vincent J. Desiderio

Download or read book Handbook of Trace Evidence Analysis written by Vincent J. Desiderio and published by John Wiley & Sons. This book was released on 2020-08-18 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers new trace evidence techniques and expanding areas of analysis, along with key theory and applications Developed around the need for updated information in the disciplines of trace evidence the Handbook of Trace Evidence Analysis focuses on the increasing awareness and need for validation, modern methods for addressing and controlling contamination, the shift towards incorporating statistical analyses into the interpretation phase and cutting edge research into new forensic science methods and their application. Beginning with an overview of the topic and discussing the important role that information derived from trace materials can provide during investigations, the book then presents chapters on key techniques. The first being the critical nature of microscopy, and the methods employed for the recognition, collection, and preservation of trace evidence. Subsequent chapters review the core disciplines of trace evidence examination: paints and polymers, hairs, fibers and textiles and glass. Each chapter contains in-depth discussions on the origin of the materials involved, including any natural or synthetic processes involved in their production, the nuances involved in their detection, and the methods of analysis that are used to extract valuable information from samples. In addition, suggested workflows in method and testing selections, as well as addressing specific scientific challenges as well as the limitations of knowledge on the transfer, persistence and background abundance of trace materials are discussed. The book ends by examining the interpretation of trace evidence findings from a historical perspective and examining the methods that are currently being developed. Provides an in-depth introduction to the general area of trace evidence and discusses current and new techniques Consolidates trace evidence and materials categories of testing into one reference series Offers a detailed focus on technical approaches and guidelines to trace evidence Includes analytical schemes/workflows and valuable guides for the interpretation of data and results The Handbook of Trace Evidence will appeal to forensic science academics, students, and practitioners in the trace evidence and materials science disciplines, as well as DNA analysts, toxicologists, forensic anthropologists, crime laboratory managers, criminal justice students and practitioners, and legal professionals. It would also be a valuable resource for every crime laboratory reference library.

A Tactical Management Model of Forensic Evidence Processes

Download A Tactical Management Model of Forensic Evidence Processes PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.:/5 (796 download)

DOWNLOAD NOW!


Book Synopsis A Tactical Management Model of Forensic Evidence Processes by : Colin James Armstrong

Download or read book A Tactical Management Model of Forensic Evidence Processes written by Colin James Armstrong and published by . This book was released on 2010 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis argues for the development of a tactical management model of forensic evidence processes. Seeking desired justice outcomes beyond a single jurisdiction to address transnational crime is difficult. Not only are laws and legal systems different, evidence processing is not standardised. Management of forensic evidence demands global and local solutions. Without international consensus for the standardisation of evidence definitions, terminologies, and processes impartial interpretations of evidence will continue to be subjected to prejudices and biases. Scientific and technological progress is changing the political nature of justice. Stakeholders with different perspectives and different objectives exasperate problems with forensic evidence processing. Law enforcers, forensic scientists, and the judiciary understand evidence from different perspectives and maintain conflicting and at times disparaging views of each other. This situation results in injustices that sees the innocent convicted and the guilty unpunished. Law enforcement personnel are at the beginning of the forensic evidence lifecycle and flawed evidence processing at this point must progress to unjust consequences. Most practitioners in the forensic evidence lifecycle are perceived to be professional and academically qualified but law enforcers are often seen as blue collar workers. Using the design science approach, this research aims to alleviate that situation by contributing a new framework for building better forensic evidence solutions. This objective is to be achieved after investigating the scope and nature of the problem interviewing evidence practitioners with law enforcement, forensic science, and judiciary perspectives and reviewing pertinent literature. The design science approach facilitated iterative develop of a preliminary model during the consultative data collection phase. Combining high level theory building with practitioners feedback of the abstracted problem and solution building phase led to the development of a meta model. The resulting meta model and constituent parts address challenges to tactical management of forensic evidence processes to provide a holistic management tool. The meta model provides a framework for six component models addressing the perspective and reason for the intervention, the building of evidence knowledge, analysis of the relationships between evidence items, building forensic evidence networks of investigated cases, an evidence resource library, and finally evidence classification schemes. The meta model and incorporated component models provide the forensic evidence practitioner community with a global level holistic framework, and meaningful local level models addressing standardising the practicalities of forensic evidence processes. Evaluation of the meta model and components was conducted iteratively during interviews where potential solutions were explored whilst gathering data from evidence experts. The high level and global nature of the meta model proved testing and validation a challenge. Another limitation was the impracticality of fully evaluating some component models because they would require large implementation projects that should be guided by international cooperation and agreements. This thesis makes a foundational level contribution for developing evidence scholarship in inter jurisdictional systems to improve and standardise evidence processing practices and systems underpinning the emerging science of forensic evidence.

Emerging Technologies for the Analysis of Forensic Traces

Download Emerging Technologies for the Analysis of Forensic Traces PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 3030205428
Total Pages : 275 pages
Book Rating : 4.0/5 (32 download)

DOWNLOAD NOW!


Book Synopsis Emerging Technologies for the Analysis of Forensic Traces by : Simona Francese

Download or read book Emerging Technologies for the Analysis of Forensic Traces written by Simona Francese and published by Springer Nature. This book was released on 2019-09-30 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a line of communication between academia and end users/practitioners to advance forensic science and boost its contribution to criminal investigations and court cases. By covering the state of the art of promising technologies for the analysis of trace evidence using a controlled vocabulary, this book targets the forensics community as well as, crucially, informing the end users on novel and potential forensic opportunities for the fight against crime. By reporting end users commentaries at the end of each chapter, the relevant academic community is provided with clear indications on where to direct further technological developments in order to meet the law requirements for operational deployment, as well as the specific needs of the end users. Promising chemistry based technologies and analytical techniques as well as techniques that have already shown to various degrees an operational character are covered. The majority of the techniques covered have imaging capabilities, that is the ability to visualize the distribution of the target molecules within the trace evidence recovered. This feature enhances intelligibility of the information making it also accessible to a lay audience such as that typically found with a court jury. Trace evidence discussed in this book include fingermarks, bodily fluids, hair, gunshot residues, soil, ink and questioned documents thus covering a wide range of possible evidence recovered at crime scenes.

Encyclopedia of Forensic Sciences

Download Encyclopedia of Forensic Sciences PDF Online Free

Author :
Publisher : Academic Press
ISBN 13 : 0123821665
Total Pages : 2253 pages
Book Rating : 4.1/5 (238 download)

DOWNLOAD NOW!


Book Synopsis Encyclopedia of Forensic Sciences by :

Download or read book Encyclopedia of Forensic Sciences written by and published by Academic Press. This book was released on 2012-12-28 with total page 2253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forensic science includes all aspects of investigating a crime, including: chemistry, biology and physics, and also incorporates countless other specialties. Today, the service offered under the guise of "forensic science’ includes specialties from virtually all aspects of modern science, medicine, engineering, mathematics and technology. The Encyclopedia of Forensic Sciences, Second Edition, Four Volume Set is a reference source that will inform both the crime scene worker and the laboratory worker of each other’s protocols, procedures and limitations. Written by leading scientists in each area, every article is peer reviewed to establish clarity, accuracy, and comprehensiveness. As reflected in the specialties of its Editorial Board, the contents covers the core theories, methods and techniques employed by forensic scientists – and applications of these that are used in forensic analysis. This 4-volume set represents a 30% growth in articles from the first edition, with a particular increase in coverage of DNA and digital forensics Includes an international collection of contributors The second edition features a new 21-member editorial board, half of which are internationally based Includes over 300 articles, approximately 10pp on average Each article features a) suggested readings which point readers to additional sources for more information, b) a list of related Web sites, c) a 5-10 word glossary and definition paragraph, and d) cross-references to related articles in the encyclopedia Available online via SciVerse ScienceDirect. Please visit www.info.sciencedirect.com for more information This new edition continues the reputation of the first edition, which was awarded an Honorable Mention in the prestigious Dartmouth Medal competition for 2001. This award honors the creation of reference works of outstanding quality and significance, and is sponsored by the RUSA Committee of the American Library Association

Strengthening Forensic Science in the United States

Download Strengthening Forensic Science in the United States PDF Online Free

Author :
Publisher : National Academies Press
ISBN 13 : 0309142393
Total Pages : 348 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!


Book Synopsis Strengthening Forensic Science in the United States by : National Research Council

Download or read book Strengthening Forensic Science in the United States written by National Research Council and published by National Academies Press. This book was released on 2009-07-29 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scores of talented and dedicated people serve the forensic science community, performing vitally important work. However, they are often constrained by lack of adequate resources, sound policies, and national support. It is clear that change and advancements, both systematic and scientific, are needed in a number of forensic science disciplines to ensure the reliability of work, establish enforceable standards, and promote best practices with consistent application. Strengthening Forensic Science in the United States: A Path Forward provides a detailed plan for addressing these needs and suggests the creation of a new government entity, the National Institute of Forensic Science, to establish and enforce standards within the forensic science community. The benefits of improving and regulating the forensic science disciplines are clear: assisting law enforcement officials, enhancing homeland security, and reducing the risk of wrongful conviction and exoneration. Strengthening Forensic Science in the United States gives a full account of what is needed to advance the forensic science disciplines, including upgrading of systems and organizational structures, better training, widespread adoption of uniform and enforceable best practices, and mandatory certification and accreditation programs. While this book provides an essential call-to-action for congress and policy makers, it also serves as a vital tool for law enforcement agencies, criminal prosecutors and attorneys, and forensic science educators.

Inside the Cell

Download Inside the Cell PDF Online Free

Author :
Publisher : Bold Type Books
ISBN 13 : 1568584709
Total Pages : 399 pages
Book Rating : 4.5/5 (685 download)

DOWNLOAD NOW!


Book Synopsis Inside the Cell by : Erin E Murphy

Download or read book Inside the Cell written by Erin E Murphy and published by Bold Type Books. This book was released on 2015-10-06 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Josiah Sutton was convicted of rape. He was five inches shorter and 65 pounds lighter than the suspect described by the victim, but at trial a lab analyst testified that his DNA was found at the crime scene. His case looked like many others -- arrest, swab, match, conviction. But there was just one problem -- Sutton was innocent. We think of DNA forensics as an infallible science that catches the bad guys and exonerates the innocent. But when the science goes rogue, it can lead to a gross miscarriage of justice. Erin Murphy exposes the dark side of forensic DNA testing: crime labs that receive little oversight and produce inconsistent results; prosecutors who push to test smaller and poorer-quality samples, inviting error and bias; law-enforcement officers who compile massive, unregulated, and racially skewed DNA databases; and industry lobbyists who push policies of "stop and spit." DNA testing is rightly seen as a transformative technological breakthrough, but we should be wary of placing such a powerful weapon in the hands of the same broken criminal justice system that has produced mass incarceration, privileged government interests over personal privacy, and all too often enforced the law in a biased or unjust manner. Inside the Cell exposes the truth about forensic DNA, and shows us what it will take to harness the power of genetic identification in service of accuracy and fairness.

Bitemark Evidence

Download Bitemark Evidence PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 9781439818633
Total Pages : 680 pages
Book Rating : 4.8/5 (186 download)

DOWNLOAD NOW!


Book Synopsis Bitemark Evidence by : Robert B.J. Dorion

Download or read book Bitemark Evidence written by Robert B.J. Dorion and published by CRC Press. This book was released on 2011-03-16 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experts in the field of bitemark evidence confront complexities ranging from the identification and collection of evidence, to microscopic analysis, to legal implications and courtroom admissibility. Now in its second edition, Bitemark Evidence reflects the knowledge, training, experience, opinions, and research of 27 authors from around the world

Forensic Chemistry Handbook

Download Forensic Chemistry Handbook PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 111806223X
Total Pages : 544 pages
Book Rating : 4.1/5 (18 download)

DOWNLOAD NOW!


Book Synopsis Forensic Chemistry Handbook by : Lawrence Kobilinsky

Download or read book Forensic Chemistry Handbook written by Lawrence Kobilinsky and published by John Wiley & Sons. This book was released on 2011-11-17 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise, robust introduction to the various topics covered by the discipline of forensic chemistry The Forensic Chemistry Handbook focuses on topics in each of the major chemistry-related areas of forensic science. With chapter authors that span the forensic chemistry field, this book exposes readers to the state of the art on subjects such as serology (including blood, semen, and saliva), DNA/molecular biology, explosives and ballistics, toxicology, pharmacology, instrumental analysis, arson investigation, and various other types of chemical residue analysis. In addition, the Forensic Chemistry Handbook: Covers forensic chemistry in a clear, concise, and authoritative way Brings together in one volume the key topics in forensics where chemistry plays an important role, such as blood analysis, drug analysis, urine analysis, and DNA analysis Explains how to use analytical instruments to analyze crime scene evidence Contains numerous charts, illustrations, graphs, and tables to give quick access to pertinent information Media focus on high-profile trials like those of Scott Peterson or Kobe Bryant have peaked a growing interest in the fascinating subject of forensic chemistry. For those readers who want to understand the mechanisms of reactions used in laboratories to piece together crime scenes—and to fully grasp the chemistry behind it—this book is a must-have.

Crime Scene Investigation

Download Crime Scene Investigation PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (327 download)

DOWNLOAD NOW!


Book Synopsis Crime Scene Investigation by : National Institute of Justice (U.S.). Technical Working Group on Crime Scene Investigation

Download or read book Crime Scene Investigation written by National Institute of Justice (U.S.). Technical Working Group on Crime Scene Investigation and published by . This book was released on 2000 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a guide to recommended practices for crime scene investigation. The guide is presented in five major sections, with sub-sections as noted: (1) Arriving at the Scene: Initial Response/Prioritization of Efforts (receipt of information, safety procedures, emergency care, secure and control persons at the scene, boundaries, turn over control of the scene and brief investigator/s in charge, document actions and observations); (2) Preliminary Documentation and Evaluation of the Scene (scene assessment, "walk-through" and initial documentation); (3) Processing the Scene (team composition, contamination control, documentation and prioritize, collect, preserve, inventory, package, transport, and submit evidence); (4) Completing and Recording the Crime Scene Investigation (establish debriefing team, perform final survey, document the scene); and (5) Crime Scene Equipment (initial responding officers, investigator/evidence technician, evidence collection kits).

Investigating Chemistry

Download Investigating Chemistry PDF Online Free

Author :
Publisher : Macmillan
ISBN 13 : 0716764334
Total Pages : 482 pages
Book Rating : 4.7/5 (167 download)

DOWNLOAD NOW!


Book Synopsis Investigating Chemistry by : Matthew Johll

Download or read book Investigating Chemistry written by Matthew Johll and published by Macmillan. This book was released on 2006-03-17 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Matthew Johll's book introduces students from a non-science background to the fundamentals of chemistry through an array of examples and applications from real-life crime scenes, Sherlock Holmes stories and authentic accounts of drug deals, murders and thefts.

Interpreting Evidence

Download Interpreting Evidence PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118492455
Total Pages : 216 pages
Book Rating : 4.1/5 (184 download)

DOWNLOAD NOW!


Book Synopsis Interpreting Evidence by : Bernard Robertson

Download or read book Interpreting Evidence written by Bernard Robertson and published by John Wiley & Sons. This book was released on 2016-07-28 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the correct logical approach to analysis of forensic scientific evidence. The focus is on general methods of analysis applicable to all forms of evidence. It starts by explaining the general principles and then applies them to issues in DNA and other important forms of scientific evidence as examples. Like the first edition, the book analyses real legal cases and judgments rather than hypothetical examples and shows how the problems perceived in those cases would have been solved by a correct logical approach. The book is written to be understood both by forensic scientists preparing their evidence and by lawyers and judges who have to deal with it. The analysis is tied back both to basic scientific principles and to the principles of the law of evidence. This book will also be essential reading for law students taking evidence or forensic science papers and science students studying the application of their scientific specialisation to forensic questions.