User Authentication Principles, Theory and Practice PDF Download

Author: Yaacov Apelbaum
Publisher: Fuji Technology Press
ISBN: 0980000009
Category : Computers
Languages : en
Pages : 166

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Author: Martine Diepenbroek
Publisher: Bloomsbury Publishing
ISBN: 135028128X
Category : Literary Criticism
Languages : en
Pages : 265

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Book Description
This book offers a comprehensive review and reassessment of the classical sources describing the cryptographic Spartan device known as the scytale. Challenging the view promoted by modern historians of cryptography which look at the scytale as a simple and impractical 'stick', Diepenbroek argues for the scytale's deserved status as a vehicle for secret communication in the ancient world. By way of comparison, Diepenbroek demonstrates that the cryptographic principles employed in the Spartan scytale show an encryption and coding system that is no less complex than some 20th-century transposition ciphers. The result is that, contrary to the accepted point of view, scytale encryption is as complex and secure as other known ancient ciphers. Drawing on salient comparisons with a selection of modern transposition ciphers (and their historical predecessors), the reader is provided with a detailed overview and analysis of the surviving classical sources that similarly reveal the potential of the scytale as an actual cryptographic and steganographic tool in ancient Sparta in order to illustrate the relative sophistication of the Spartan scytale as a practical device for secret communication. This helps to establish the conceptual basis that the scytale would, in theory, have offered its ancient users a secure method for secret communication over long distances.

Author: Karim Sadeghi
Publisher: Springer Nature
ISBN: 3031131614
Category : Education
Languages : en
Pages : 316

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This book brings together the current theory, research and practical perspectives from different parts of the world on language teacher identity in an attempt to better understand the nature of identities teachers in different contexts develop. By linking theory to pedagogy, the book examines how second language teacher identities are shaped and explores the various links between teacher identities and variables that affect the formation of identities. Theory and Practice in Second Language Teacher Identity includes a foreword by Jack Richards (University of Sydney and RELC), an afterword by Peter de Costa (Michigan State University) and holds 20 invited chapters by established and active scholars and teacher educators to discuss the various aspects of in-service and pre-service second language teacher identity development. It also addresses the way the COVID-19 pandemic has impacted teacher identities and examines under-researched issues, such as the intersection between gender and race in second language teacher identity development and identity construction in second languages other than English. What does it mean to be a teacher of English as a second language in an age of globalization, new media, technological revolution and de-institutionalized knowledge? How do teachers gain pre-service and in-service expertise, a sense of professional identity, and educational integrity? And how have they dealt with the extra-burden imposed by the pandemic? This thought-provoking volume offers valuable perspectives on these important issues in the professional development of English teachers worldwide. — Prof. Claire Kramsch, University of California, Berkeley, USA. The way we see ourselves and are seen by others influences our social and professional interactions. Teacher identity and sense of agency is therefore not merely a matter of research interest for it impacts learners and learning, which makes the topic of this book extremely important. With chapters located in a wide range of countries – from USA to Australia via UAE, Thailand and others – and drawing on a variety of research methods, the book synthesizes extant research and develops many new research avenues. It does so not only with theory in mind but with practical lessons for teachers and teacher educators and thus becomes an essential volume for our libraries and studies. — Prof. Michael Byram, University of Durham, UK. In this compelling collection, co-edited by Karim Sadeghi and Farah Ghaderi, the authors address key questions about language teacher identity in contemporary applied linguistics: What is the relationship between language teacher identity and language teacher agency? To what extent does ideology impact language teacher identity? How do language teachers navigate an increasingly globalized and unequal world? Authors from different regions of the world draw on diverse methodologies to share insightful research on both pre-service and in-service language teacher identity, making an important contribution to applied linguistics and TESOL at a time of great social and educational change. — Prof. Bonny Norton (FRSC), University Killam Professor and Distinguished University Scholar, University of British Columbia, Canada. “Theory and Practice in Second Language Teacher Identity” captures recent thinking about language teacher identity. The broad array of excellent chapter contributions explores multiple dimensions of identity, from teacher agency and emotions to the disruptive effects of the Covid pandemic on teachers’ professional lives and practices. The studies draw on a number of theoretical perspectives and demonstrate the use of both familiar and innovative research methodologies. The relevant topics, the up-to-date bibliographic sources, and the useful research findings make this edited volume an essential addition to your bookshelf. — Prof. Gary Barkhuizen, University of Auckland, New Zealand.

Author: William Stallings
Publisher: Pearson
ISBN: 0134484525
Category : Computers
Languages : en
Pages : 772

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This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. The Principles and Practice of Cryptography and Network Security Stallings’ Cryptography and Network Security, Seventh Edition, introduces the reader to the compelling and evolving field of cryptography and network security. In an age of viruses and hackers, electronic eavesdropping, and electronic fraud on a global scale, security is paramount. The purpose of this book is to provide a practical survey of both the principles and practice of cryptography and network security. In the first part of the book, the basic issues to be addressed by a network security capability are explored by providing a tutorial and survey of cryptography and network security technology. The latter part of the book deals with the practice of network security: practical applications that have been implemented and are in use to provide network security. The Seventh Edition streamlines subject matter with new and updated material — including Sage, one of the most important features of the book. Sage is an open-source, multiplatform, freeware package that implements a very powerful, flexible, and easily learned mathematics and computer algebra system. It provides hands-on experience with cryptographic algorithms and supporting homework assignments. With Sage, the reader learns a powerful tool that can be used for virtually any mathematical application. The book also provides an unparalleled degree of support for the reader to ensure a successful learning experience.

Author: Gary Barkhuizen
Publisher: Taylor & Francis
ISBN: 131728609X
Category : Language Arts & Disciplines
Languages : en
Pages : 287

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Book Description
Reflections on Language Teacher Identity Research is the first book to present understandings of language teacher identity (LTI) from a broad range of research fields. Drawing on their personal research experience, 41 contributors locate LTI within their area of expertise by considering their conceptual understanding of LTI and the methodological approaches used to investigate it. The chapters are narrative in nature and take the form of guided reflections within a common chapter structure, with authors embedding their discussions within biographical accounts of their professional lives and research work. Authors weave discussions of LTI into their own research biographies, employing a personal reflective style. This book also looks to future directions in LTI research, with suggestions for research topics and methodological approaches. This is an ideal resource for students and researchers interested in language teacher identity as well as language teaching and research more generally.

Author: Catherine A. Darnell
Publisher: Routledge
ISBN: 1000218031
Category : Education
Languages : en
Pages : 239

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Virtues and Virtue Education in Theory and Practice explores questions about the locality versus the universality of virtues from a number of theoretical and practical perspectives. Written by leading international scholars in the field, it considers the relevance of these debates for the practice of virtue and character education. This volume brings together experts from education, philosophy, and psychology to consider how different disciplines might learn from each other and how insights from theory and practice can be integrated. It shows that questions about virtue relativity or universality have not only theoretical significance but also important practical ramifications. The chapters explore different complexities of virtue ethics and different approaches to nurturing virtue and beyond, questioning how well virtues travel across geographical and cultural borders. By examining the philosophical literature and making links between theory and practice in an original way, the book offers scholarly research-informed suggestions for practice. It will be of great interest to researchers and academics and students in educational philosophy, character education, ethics, and psychology.

Author: Paul A. Schutz
Publisher: Springer
ISBN: 3319938363
Category : Education
Languages : en
Pages : 250

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Understanding teachers’ professional identities and their development is key to unpacking teachers’ professional lives, the quality of their instruction, their motivation and commitment to teach, and their career decision-making. This book features a number of scholars from around the world who represent a variety of disciplines, scientific paradigms, and inquiry methods in researching teacher identity. By bringing these chapters together, this volume initiates active scholarly conversations and extends the boundaries of teacher identity research and practice. This collection of chapters provides significant insight into teacher identity and will be essential reading for pre-service and in-service teachers, teacher educators, school administrators, professional developers, and policy makers at various levels.

Author: Roz Ivani?
Publisher: John Benjamins Publishing
ISBN: 9027217971
Category : Language Arts & Disciplines
Languages : en
Pages : 389

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Book Description
Writing is not just about conveying 'content' but also about the representation of self. (One of the reasons people find writing difficult is that they do not feel comfortable with the 'me' they are portraying in their writing. Academic writing in particular often poses a conflict of identity for students in higher education, because the 'self' which is inscribed in academic discourse feels alien to them.)The main claim of this book is that writing is an act of identity in which people align themselves with socio-culturally shaped subject positions, and thereby play their part in reproducing or challenging dominant practices and discourses, and the values, beliefs and interests which they embody. The first part of the book reviews recent understandings of social identity, of the discoursal construction of identity, of literacy and identity, and of issues of identity in research on academic writing. The main part of the book is based on a collaborative research project about writing and identity with mature-age students, providing: - a case study of one writer's dilemmas over the presentation of self;- a discussion of the way in which writers' life histories shape their presentation of self in writing;- an interview-based study of issues of ownership, and of accommodation and resistance to conventions for the presentation of self;- linguistic analysis of the ways in which multiple, often contradictory, interests, values, beliefs and practices are inscribed in discourse conventions, which set up a range of possibilities for self-hood for writers.The book ends with implications of the study for research on writing and identity, and for the learning and teaching of academic writing.The book will be of interest to students and researchers in the fields of social identity, literacy, discourse analysis, rhetoric and composition studies, and to all those concerned to understand what is involved in academic writing in order to provide wider access to higher education.

Author: Thomas S. C. Farrell
Publisher: Routledge
ISBN: 100051305X
Category : Education
Languages : en
Pages : 189

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This practical and engaging book introduces readers to reflective practice in English language teaching. Assuming no background knowledge, Thomas S. C. Farrell clearly and accessibly walks through ways that teachers can integrate and implement reflective practice in the classroom and in other contexts to benefit their teaching and their own professional development. Each chapter covers an important dimension of reflective practice and features many ready-to-use activities that are designed to empower teachers and allow them to overcome challenges they’ll face throughout their careers. Covering many types of reflection and the many purposes it serves, this book addresses written reflection, lesson planning, classroom observation, classroom management, group communication and more. This resource is ideal for preservice and early career language teachers and is an important supplement to courses in language education and applied linguistics programs.

Author: Terry Smith
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110718731
Category : Business & Economics
Languages : en
Pages : 743

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Brand Fusion: Purpose-driven brand strategy presents a compelling case for what consumers, customers, employees, and wider society are now demanding from companies – the development of brands that deliver profit with purpose, are sustainable, and create mutually beneficial meaning. It fuses theory-practice-application to purpose-driven brand strategies in order to develop a unique approach that has comprehensive theoretical underpinning as well as practical and thought-provoking lessons from industry. Data-driven case studies from a broad range of brands and contexts show the application of this learning–from micro-brands to corporates; charities to technology companies; retirement villages to aspiring high-growth start-ups. Brand Fusion: Purpose-driven brand strategy is an in-depth analysis of the philosophy and practice behind creating a purposeful brand.