Uncover surprises, risks, and potentially serious bugs with exploratory testing. Rather than designing all tests in advance, explorers design and execute small, rapid experiments, using what they learned from the last little experiment to inform the next. Learn essential skills of a master explorer, including how to analyze software to discover key points of vulnerability, how to design experiments on the fly, how to hone your observation skills, and how to focus your efforts. Software is full of surprises. No matter how careful or skilled you are, when you create software it can behave differently than you intended. Exploratory testing mitigates those risks. Part 1 introduces the core, essential skills of a master explorer. You'll learn to craft charters to guide your exploration, to observe what's really happening (hint: it's harder than it sounds), to identify interesting variations, and to determine what expected behavior should be when exercising software in unexpected ways. Part 2 builds on that foundation. You'll learn how to explore by varying interactions, sequences, data, timing, and configurations. Along the way you'll see how to incorporate analysis techniques like state modeling, data modeling, and defining context diagrams into your explorer's arsenal. Part 3 brings the techniques back into the context of a software project. You'll apply the skills and techniques in a variety of contexts and integrate exploration into the development cycle from the very beginning. You can apply the techniques in this book to any kind of software. Whether you work on embedded systems, Web applications, desktop applications, APIs, or something else, you'll find this book contains a wealth of concrete and practical advice about exploring your software to discover its capabilities, limitations, and risks.

Written for those starting a career in IT or whose career is well advanced, this career guide shows how to blaze a path to success through the jungle of modern IT. With a career spanning five decades, the author shares lessons he learned the hard way so readers do not have to learn them the hard way. By emphasizing the importance of business processes and applications to IT, this book explains how to understand the value and positioning of hardware and software technology in order to make appropriate decisions. It addresses the importance of IT architecture and the roles service and systems management play. It also explains service level agreements (SLAs) and provides sample SLAs. Readers learn how to conduct IT assessments using SWOT (strengths, weaknesses, opportunities, and threats) analysis. It also shows how to use root-cause analysis (RCA) to detect the sources of failure and poor performance. An overview of risk management and the steps involved in developing a business continuity plan are also included. The book looks at all facets of an IT professional's career. It explains how to build an IT team and examines the roles and responsibilities within the team. It shows how to provide professional customer care to IT clients. Business executives recognize the importance of IT, and this book shows technology professionals how to thrive in the business world. It covers: Making effective presentations Report and proposal writing Negotiating and persuasion skills Running productive meetings Time and stress management The book also discusses such important career skills as listening, continual and incremental learning, and communicating at all levels. From its templates and checklists to its comprehensive and holistic view of a successful IT career, this book is an indispensable guide for every professional working in IT today and tomorrow.

To be effective, data-intensive systems require extensive ongoing customisation to reflect changing user requirements, organisational policies, and the structure and interpretation of the data they hold. Manual customisation is expensive, time-consuming, and error-prone. In large complex systems, the value of the data can be such that exhaustive testing is necessary before any new feature can be added to the existing design. In most cases, the precise details of requirements, policies and data will change during the lifetime of the system, forcing a choice between expensive modification and continued operation with an inefficient design. Engineering Agile Big-Data Systems outlines an approach to dealing with these problems in software and data engineering, describing a methodology for aligning these processes throughout product lifecycles. It discusses tools which can be used to achieve these goals, and, in a number of case studies, shows how the tools and methodology have been used to improve a variety of academic and business systems.

Business managers have long known the power of the Balanced Scorecard in executing corporate strategy. Implementing the Project Management Balanced Scorecard shows project managers how they too can use this framework to meet strategic objectives. It supplies valuable insight into the project management process as a whole and provides detailed explanations on how to effectively implement the balanced scorecard to measure and manage performance and projects. The book details a tactical approach for implementing the scorecard approach at the project level and investigates numerous sample scorecards, metrics, and techniques. It examines recent research on critical issues such as performance measurement and management, continuous process improvement, benchmarking, metrics selection, and people management. It also explains how to integrate these issues with the four perspectives of the balanced scorecard: customer, business processes, learning and innovation, and financial. Filled with examples and case histories, the book directly relates the scorecard concept to the major project management steps of determining scope, scheduling, estimation, risk management, procurement, and project termination. It includes a plethora of resources on the accompanying downloadable resources-including detailed instructions for developing a measurement program, a full metrics guide, a sample project plan, and a set of project management fill-in forms.

This book covers the fundamental concepts in signal processing illustrated with Python code and made available via IPython Notebooks, which are live, interactive, browser-based documents that allow one to change parameters, redraw plots, and tinker with the ideas presented in the text. Everything in the text is computable in this format and thereby invites readers to "experiment and learn" as they read. The book focuses on the core, fundamental principles of signal processing. The code corresponding to this book uses the core functionality of the scientific Python toolchain that should remain unchanged into the foreseeable future. For those looking to migrate their signal processing codes to Python, this book illustrates the key signal and plotting modules that can ease this transition. For those already comfortable with the scientific Python toolchain, this book illustrates the fundamental concepts in signal processing and provides a gateway to further signal processing concepts.

This book provides guidelines for practicing design science in the fields of information systems and software engineering research. A design process usually iterates over two activities: first designing an artifact that improves something for stakeholders and subsequently empirically investigating the performance of that artifact in its context. This "validation in context" is a key feature of the book - since an artifact is designed for a context, it should also be validated in this context. The book is divided into five parts. Part I discusses the fundamental nature of design science and its artifacts, as well as related design research questions and goals. Part II deals with the design cycle, i.e. the creation, design and validation of artifacts based on requirements and stakeholder goals. To elaborate this further, Part III presents the role of conceptual frameworks and theories in design science. Part IV continues with the empirical cycle to investigate artifacts in context, and presents the different elements of research problem analysis, research setup and data analysis. Finally, Part V deals with the practical application of the empirical cycle by presenting in detail various research methods, including observational case studies, case-based and sample-based experiments and technical action research. These main sections are complemented by two generic checklists, one for the design cycle and one for the empirical cycle. The book is written for students as well as academic and industrial researchers in software engineering or information systems. It provides guidelines on how to effectively structure research goals, how to analyze research problems concerning design goals and knowledge questions, how to validate artifact designs and how to empirically investigate artifacts in context - and finally how to present the results of the design cycle as a whole.

In IT divisions and organizations, the need to execute in a competitive and complex technical environment while demonstrating personal integrity can be a significant personal and organizational challenge. Supplying concrete guidelines for those at an ethical crossroads, Ethics in IT Outsourcing explores the complex challenges of aligning IT outsourcing programs with ethical conduct and standards. This one-stop reference on the ethical structure and execution of IT outsourcing incorporates an easy-to-apply checklist of principles for outsourcing executives and managers. It examines certification programs, such as the online ethics training and certification offered by the Code of Ethics and Business Practice Standards for Outsourcing Professionals established by the International Association of Outsourcing Professionals (IAOP). Based upon significant research on the economic impact of outsourcing at a micro, macro, and corporate level, this volume defines a comprehensive set of ethical program components to ensure your program is aligned with ethical guidelines. Based on a solid foundation of documented research and analysis Examines the ethical impact of outsourcing on individuals, corporations, and society Outlines a new corporate capability-the Ethics PMO Includes a list of tools to help readers establish their own Ethics PMO Filled with authoritative insights based on the author's decades of experience working with large firms in IT and outsourcing, this book is suitable for both veteran IT practitioners and stakeholders new to the topic. A must-read for anyone seeking to understand the underlying issues in this area of growing importance, it will bring you up to speed on the recent developments you need to be aware of to ensure ethical personal, corporate, and societal decision-making. Readers are invited to participate in the growing dialog of business ethics, and IT outsourcing ethics in particular, at the author's website: www.ethicsinit.com

Technological advance affects almost all areas of human life. Rapid digitization, increased mobility, new biotechnologies, and nanotechnology deeply influence, amongst others, industrial production, entertainment, work, military affairs, and individual life. Besides overwhelmingly positive effects on wealth, comfort, innovation, and development, this also raises questions of unintended effects, of tensions with democracy, of the role of citizens, and of its sustainability facing environmental issues. Tools and procedures are needed to cope with this challenging situation. Technology assessment (TA) has been developed more than fifty years ago to enable science, the economy, and society to harvest the potential of new technology to the maximum extent possible and to deal responsibly with possible adverse effects. It was developed more than 50 years ago in the U.S. Congress and has diversified considerably in the meantime. Parliamentary TA in many European states and at the international level, participatory TA at the local and regional levels worldwide, and TA as part of engineering processes are the most relevant fields today. Technology assessment is a growing field of interdisciplinary research and scientific policy advice. This volume (a) gives an overview of motivations of TA, its history and its current practices, (b) develops a fresh theoretical perspective on TA rooted in social theory and philosophy, and (c) draws conclusions from the theoretical perspective for the further development of TA's practices. It provides the first comprehensive view on the growing field of TA at the international level.

While there are sporadic journal articles on socio-technical networks, there's long been a need for an integrated resource that addresses concrete socio-technical network (STN) design issues from algorithmic and engineering perspectives. Filling this need, Socio-Technical Networks: Science and Engineering Design provides a complete introduction to the fundamentals of one of the hottest research areas across the social sciences, networking, and computer science-including its definition, historical background, and models. Covering basic STN architecture from a physical/technological perspective, the book considers the system design process in a typical STN, including inputs, processes/actions, and outputs/products. It covers current applications, including transportation networks, energy systems, tele-healthcare, financial networks, and the World Wide Web. A group of STN expert contributors addresses privacy and security topics in the interdependent context of critical infrastructure, which include risk models, trust models, and privacy preserving schemes. Covers the physical and technological designs in a typical STN Considers STN applications in popular fields, such as healthcare and the virtual community Details a method for mapping and measuring complexity, uncertainty, and interactions among STN components The book examines the most important STN models, including graph theory, inferring agent dynamics, decision theory, and information mining. It also explains structural studies, behavioral studies, and agent/actor system studies and policy studies in different STN contexts. Complete with in-depth case studies, this book supplies the practical insight needed to address contemporary STN design issues.

* Targests readers with a background in programming, interested in an introduction/refresher in statistical hypothesis testing * Uses Python throughout * Provides the reader with the opportunity of using the book whenever needed rather than following a sequential path.

With the majority of IT projects being delivered late, over budget, or cancelled altogether, it is clear that traditional project management methodologies do not provide an effective framework for today's IT projects. It is evident that a new Return-on-Investment (ROI) oriented approach is required that focuses on the ROI of a project from its inception. Maximizing Benefits from IT Project Management: From Requirements to Value Delivery provides comprehensive guidelines for determining an accurate ROI before the project has progressed to the point where it's over budget and over-run. It applies an iterative approach to the entire project management life cycle that re-visits the ROI, re-assesses the value delivered, defines the project scope, and allows the project to be planned as successive iterations based on the value delivered. This book details a systematic and simplified approach for effectively and efficiently selecting and evaluating IT projects for your organization. Filled with equations, tables, and figures that facilitate understanding, it explains how to evaluate subsequent success of a project so that it is simpler to manage, more efficient, and yields the ROI estimated at the outset. Using the novel approach outlined in the book, you will be able to deliver value throughout the project life cycle and make sure your projects are delivered on time, on budget, and within the constraints of the resources available.

Although the precepts of software engineering have been around for decades, the field has failed to keep pace with rapid advancements in computer hardware and software. Modern systems that integrate multiple platforms and architectures, along with the collaborative nature of users who expect an instantaneous global reach via the Internet, require updated software engineering methods. Social Software Engineering: Development and Collaboration with Social Networking examines the field through the spectrum of the social activities that now compose it. Supplying an up-to-date look at this ever-evolving field, it provides comprehensive coverage that includes security, legal, and privacy issues in addition to workflow and people issues. Jessica Keyes, former managing director of R&D for the New York Stock Exchange and noted columnist, correspondent, and author with more than 200 articles published, details the methodology needed to bring mission-critical software projects to successful conclusions. She provides readers with the understanding and tools required to fuse psychology, sociology, mathematics, and the principles of knowledge engineering to develop infrastructures capable of supporting the collaborative applications that today's users require.

The Science of Biometrics: Security Technology for Identity Verification covers the technical aspects of iris and facial recognition, focusing primarily on the mathematical and statistical algorithms that run the verification and identification processes in these two modalities. Each chapter begins with a review of the technologies, examining how they work, their advantages and disadvantages, as well as some of their established market applications. Numerous approaches are examined. Facial recognition is much more of an emerging biometric technology than iris recognition; therefore, there are more algorithms that are currently being developed in that area. After this review, numerous applications of these two modalities are covered as well, some of which have just been commercially deployed while others are under research and development. Chapters 3 and 4 conclude with case studies to provide further application review. This book is directed to security managers, electronic security system designers, consultants, and system integrators, as well as electronic security system manufacturers working in access control and biometrics.

Even though Six Sigma programs have successfully been implemented in practice, many IT departments remain skeptical of the process or are unaware of how the tools can be used to improve system development. Removing the mystique surrounding this technique, Six Sigma Software Development, Second Edition demonstrates how Six Sigma tools and concepts can be used to enhance the system development process. Revised and updated, this second edition clearly explains Six Sigma concepts and their application, maps Six Sigma concepts and tools to all aspects of system development, and proposes the use of Six Sigma tools to evaluate and improve the overall performance of the IT department. In addition to classic Six Sigma, the book introduces Design for Six Sigma (DFSS) and illustrates when and how its tools and techniques can be used to increase the robustness and reliability of a new system. It also shows how the judicious application of lean tools can reduce the complexity of IT processes, thus shortening the time needed to translate customer requirements into completed systems and increasing customer satisfaction.

Organizations enjoy two kinds of strategic advantages. One is transitory: being in the right place with the right products at the right time. The other comes from having first class management and instituting processes that mobilize an organization, keeping in ahead of the competition. Which would you like to count on for your organization's success?Integrating ERP, CRM, Supply Chain Management, and Smart Materials explores how to create business opportunities and reap savings by: Restructuring and updating of ERP and CRM software as it integrates supply chain management and delivers new killer applications Evolving opportunities that will develop from the implementation of smart materials, automatic identification, classification systems, and quality assurance projects Auditing the implementation, operation, and maintenance of ERP and CRM software as well as the corrective action taken on the basis of resultsInternet commerce, online supply chain, and advances in technology - all available at increasingly lower costs - make systems of the past obsolete. However, just as new technology creates new opportunities, it can also create unforeseen consequences. By binding a wealth of interdependent issues between the covers of one book, Integrating ERP, CRM, Supply Chain Management, and Smart Materials gives you the tools you need to create proprietary, high value-added solutions.

This is the last in a four book series comprising a critical review of the Unified Process that includes a survey of the alternate software processes and the synthesis of a more robust process. The transition and production phases are the final phases of the Unified Process that provide for the deployment, operation and support of the system among the user groups. This volume includes a masters' collection of best practices that include practical advice for successfully launching the software, applying personal processes, developing and enhancing organizational software processes, achieving reuse, conducting project assessments, saving a troubled project, testing the system, avoiding a maintenance nightmare, and operating and supporting the software.

This book constitutes the refereed proceedings of the artificial intelligence in intelligent systems section of the 10th Computer Science Online Conference 2021 (CSOC 2021), held online in April 2021. Artificial intelligence in intelligent systems topics are presented in this book. Modern hybrid and bio-inspired algorithms and their application are discussed in selected papers.

Software is one of the most important products in human history and is widely used by all industries and all countries. It is also one of the most expensive and labor-intensive products in human history. Software also has very poor quality that has caused many major disasters and wasted many millions of dollars. Software is also the target of frequent and increasingly serious cyber-attacks. Among the reasons for these software problems is a chronic lack of reliable quantified data. This reference provides quantified data from many countries and many industries based on about 26,000 projects developed using a variety of methodologies and team experience levels. The data has been gathered between 1970 and 2017, so interesting historical trends are available. Since current average software productivity and quality results are suboptimal, this book focuses on "best in class" results and shows not only quantified quality and productivity data from best-in-class organizations, but also the technology stacks used to achieve best-in-class results. The overall goal of this book is to encourage the adoption of best-in-class software metrics and best-in-class technology stacks. It does so by providing current data on average software schedules, effort, costs, and quality for several industries and countries. Because productivity and quality vary by technology and size, the book presents quantitative results for applications between 100 function points and 100,000 function points. It shows quality results using defect potential and DRE metrics because the number one cost driver for software is finding and fixing bugs. The book presents data on cost of quality for software projects and discusses technical debt, but that metric is not standardized. Finally, the book includes some data on three years of software maintenance and enhancements as well as some data on total cost of ownership.

Going where no book on software measurement and metrics has previously gone, this critique thoroughly examines a number of bad measurement practices, hazardous metrics, and huge gaps and omissions in the software literature that neglect important topics in measurement. The book covers the major gaps and omissions that need to be filled if data about software development is to be useful for comparisons or estimating future projects. Among the more serious gaps are leaks in reporting about software development efforts that, if not corrected, can distort data and make benchmarks almost useless and possibly even harmful. One of the most common leaks is that of unpaid overtime. Software is a very labor-intensive occupation, and many practitioners work very long hours. However, few companies actually record unpaid overtime. This means that software effort is underreported by around 15%, which is too large a value to ignore. Other sources of leaks include the work of part-time specialists who come and go as needed. There are dozens of these specialists, and their combined effort can top 45% of total software effort on large projects. The book helps software project managers and developers uncover errors in measurements so they can develop meaningful benchmarks to estimate software development efforts. It examines variations in a number of areas that include: Programming languages Development methodology Software reuse Functional and nonfunctional requirements Industry type Team size and experience Filled with tables and charts, this book is a starting point for making measurements that reflect current software development practices and realities to arrive at meaningful benchmarks to guide successful software projects.

This open access book provides an overview of the dissertations of the five nominees for the Ernst Denert Award for Software Engineering in 2019. The prize, kindly sponsored by the Gerlind & Ernst Denert Stiftung, is awarded for excellent work within the discipline of Software Engineering, which includes methods, tools and procedures for better and efficient development of high quality software. An essential requirement for the nominated work is its applicability and usability in industrial practice. The book contains five papers describing the works by Sebastian Baltes (U Trier) on Software Developers'Work Habits and Expertise, Timo Greifenberg's thesis on Artefaktbasierte Analyse modellgetriebener Softwareentwicklungsprojekte, Marco Konersmann's (U Duisburg-Essen) work on Explicitly Integrated Architecture, Marija Selakovic's (TU Darmstadt) research about Actionable Program Analyses for Improving Software Performance, and Johannes Spath's (Paderborn U) thesis on Synchronized Pushdown Systems for Pointer and Data-Flow Analysis - which actually won the award. The chapters describe key findings of the respective works, show their relevance and applicability to practice and industrial software engineering projects, and provide additional information and findings that have only been discovered afterwards, e.g. when applying the results in industry. This way, the book is not only interesting to other researchers, but also to industrial software professionals who would like to learn about the application of state-of-the-art methods in their daily work.

Like other sciences and engineering disciplines, software engineering requires a cycle of model building, experimentation, and learning. Experiments are valuable tools for all software engineers who are involved in evaluating and choosing between different methods, techniques, languages and tools.

The purpose of Experimentation in Software Engineering is to introduce students, teachers, researchers, and practitioners to empirical studies in software engineering, using controlled experiments. The introduction to experimentation is provided through a process perspective, and the focus is on the steps that we have to go through to perform an experiment. The book is divided into three parts. The first part provides a background of theories and methods used in experimentation. Part II then devotes one chapter to each of the five experiment steps: scoping, planning, execution, analysis, and result presentation. Part III completes the presentation with two examples. Assignments and statistical material are provided in appendixes. Overall the book provides indispensable information regarding empirical studies in particular for experiments, but also for case studies, systematic literature reviews, and surveys. It is a revision of the authors' book, which was published in 2000. In addition, substantial new material, e.g. concerning systematic literature reviews and case study research, is introduced. The book is self-contained and it is suitable as a course book in undergraduate or graduate studies where the need for empirical studies in software engineering is stressed. Exercises and assignments are included to combine the more theoretical material with practical aspects. Researchers will also benefit from the book, learning more about how to conduct empirical studies, and likewise practitioners may use it as a "cookbook" when evaluating new methods or techniques before implementing them in their organization."

* Provides simple, conceptual descriptions of everyday technologies * Includes clear examples and diagrams that demonstrate the principles and techniques, not just a "how-to" punch list * Covers advanced topics for readers who want to dive into the deep end of the technology pool * Avoids jargon-where terminology does appear, the text will provide clear, concise definitions

The work presented in this book is based on empirical study undertaken as a case study to understand the challenges faced in massively open online course (MOOC) based learning and experimentation to understand the challenges for presenting theoretical and practical courses. The book proposes a flexible online platform. This solution provides flexibility in distance learning processes including course enrollment, learning, evaluation, and outcome of degrees. The proposed system not only gives students freedom to choose their courses in accordance with their needs but also use earned credit towards online degrees of any university of their choice.

In business, driving value is a key strategy and typically starts at the top of an organization. In today's digital age, driving software value is also an important, and often overlooked, key strategy. Executives, and the corporate board, need to expect the highest level of business value from the software the organization is developing, buying, and selling. In today's digital transformation marketplace, it is imperative that organizations start driving business value from software development initiatives. For many years, the cost of software development challenged organizations with questions such as: How do we allocate software development costs? Should these costs be considered an overhead expense? Are we getting the most value possible for our investment? A fundamental problem has been built into these questions - the focus on cost. In almost every other part of the organization, maximizing profit or, in the case of a not-for-profit, maximizing the funds available, provides a clear focus with metrics to determine success or failure. In theory, simply aligning software spending with the maximizing profit goals should be sufficient to avoid any questions about value for money. Unfortunately, this alignment hasn't turned out to be so simple, and the questions persist, particularly at the strategic or application portfolio level. In this book, Michael D.S. Harris describes how a software business value culture-one where all stakeholders, including technology and business-have a clear understanding of the goals and expected business value from software development. The book shows readers how they can transform software development from a cost or profit center to a business value center. Only a culture of software as a value center enables an organization to constantly maximize business value flow through software development. If your organization is starting to ask how it can change software from a cost-center to a value-center, this book is for you.

As human activities moved to the digital domain, so did all the well-known malicious behaviors including fraud, theft, and other trickery. There is no silver bullet, and each security threat calls for a specific answer. One specific threat is that applications accept malformed inputs, and in many cases it is possible to craft inputs that let an intruder take full control over the target computer system. The nature of systems programming languages lies at the heart of the problem. Rather than rewriting decades of well-tested functionality, this book examines ways to live with the (programming) sins of the past while shoring up security in the most efficient manner possible. We explore a range of different options, each making significant progress towards securing legacy programs from malicious inputs. The solutions explored include enforcement-type defenses, which excludes certain program executions because they never arise during normal operation. Another strand explores the idea of presenting adversaries with a moving target that unpredictably changes its attack surface thanks to randomization. We also cover tandem execution ideas where the compromise of one executing clone causes it to diverge from another thus revealing adversarial activities. The main purpose of this book is to provide readers with some of the most influential works on run-time exploits and defenses. We hope that the material in this book will inspire readers and generate new ideas and paradigms.