Complex sociotechnical systems' are systems made up of numerous interacting parts, both human and non-human, operating in dynamic, ambiguous and safety critical domains. Cognitive Work Analysis (CWA) is a structured framework specifically developed for considering the development and analysis of these complex socio-technical systems. Unlike many human factors approaches, CWA does not focus on how human-system interaction should proceed (normative modelling) or how human-system interaction currently works (descriptive modelling). Instead, through a focus on constraints, it develops a model of how work can be conducted within a given work domain, without explicitly identifying specific sequences of actions (formative modelling). The framework leads the analyst to consider the environment the task takes place within, and the effect of the imposed constraints on the way work can be conducted. It provides guidance through the process of answering the questions of why the system exists, what activities can be conducted within the domain as well as how these activities can be achieved, and who can perform them. The first part of the book contains a comprehensive description of CWA, introducing it to the uninitiated. It then presents a number of applications in complex military domains to explore and develop the benefits of CWA. Unlike much of the previous literature, particular attention is placed on exploring the CWA framework in its entirety. This holistic approach focuses on the system environment, the activity that takes place within it, the strategies used to conduct this activity, the way in which the constituent parts of the system (both human and non-human) interact and the behaviour required. Each stage of this analysis identifies the constraints governing the system; it is contended that through this holistic understanding of constraints, recommendations can be made for the design of system interaction; increasing the ability of users to cope with unanticipated, unexpected situations. This book discusses the applicability of the approach in system analysis, development and evaluation. It provides process to what was previously a loosely defined framework.
Having an accurate understanding of what is going on is a key commodity for teams working within military systems. 'Situation awareness' (SA) is the term that is used within human factors circles to describe the level of awareness that operators have of the situation that they are engaged in; it focuses on how operators develop and maintain a sufficient understanding of 'what is going on' in order to achieve success in task performance. Over the past two decades, the construct has become a fundamental theme within the areas of system design and evaluation and has received considerable attention from the human factors research community. Despite this, there is still considerable debate over how SA operates in complex collaborative systems and how SA achievement and maintenance is best supported through system, procedure and interface design. This book focuses on the recently developed concept of distributed situation awareness, which takes a systems perspective on the concept and moves the focus on situation awareness out of the heads of individual operators and on to the overall joint cognitive system consisting of human and technological agents. Situation awareness is viewed as an emergent property of collaborative systems, something that resides in the interaction between elements of the system and not in the heads of individual operators working in that system. The first part of the book presents a comprehensive review and critique of existing SA theory and measurement approaches, following which a novel model for complex collaborative systems, the distributed SA model, and a new modelling procedure, the propositional network approach, are outlined and demonstrated. The next part focuses on real-world applications of the model and modelling procedure, and presents four case studies undertaken in the land warfare, multinational warfare and energy distribution domains. Each case study is described in terms of the domain in question, the methodology employed, and the findings derived in relation to situation awareness theory. The third and final part of the book then concentrates on theoretical development, and uses the academic literature and the findings from the case study applications to validate and extend the distributed SA model described at the beginning of the book. In closing, the utility of the distributed SA model and modeling procedure are outlined and a series of initial guidelines for supporting distributed SA through system design are articulated.
This book provides an overview of, and practical guidance on, the range of human factors (HF) methods that can be used for the purposes of accident analysis and investigation in complex sociotechnical systems. Human Factors Methods and Accident Analysis begins with an overview of different accident causation models and an introduction to the concepts of accident analysis and investigation. It then presents a discussion focussing on the importance of, and difficulties associated with, collecting appropriate data for accident analysis purposes. Following this, a range of HF-based accident analysis methods are described, as well as step-by-step guidance on how to apply them. To demonstrate how the different methods are applied, and what the outputs are, the book presents a series of case study applications across a range of safety critical domains. It concludes with a chapter focussing on the data challenges faced when collecting, coding and analysing accident data, along with future directions in the area. Human Factors Methods and Accident Analysis is the first book to offer a practical guide for investigators, practitioners and researchers wishing to apply accident analysis methods. It is also unique in presenting a series of novel applications of accident analysis methods, including HF methods not previously used for these purposes (e.g. EAST, critical path analysis), as well as applications of methods in new domains.
This book presents a human factors and ergonomics evaluation of a digital Mission Planning and Battle-space Management (MP/BM) system. An emphasis was placed on the activities at the Brigade (Bde) and the Battle Group (BG) headquarters (HQ) levels. The analysts distributed their time evenly between these two locations. The human factors team from Brunel University, as part of the HFI DTC, undertook a multi-faceted approach to the investigation, including: - observation of people using the traditional analogue MP/BM processes in the course of their work - cognitive work analysis of the digital MP/BM system - analysis of the tasks and goal structure required by the digital MP/BM - assessment against a usability questionnaire - analysis of the distributed situation awareness - an environmental survey. The book concludes with a summary of the research project's findings and offers many valuable insights. For example, the recommendations for short-term improvements in the current generation of digital MP/BM system address general design improvements, user-interface design improvements, hardware improvements, infrastructure improvements and support improvements. In looking forward to the next generation digital MP/BM systems, general human factors design principles are presented and human factors issues in digitising mission planning are considered.
This second edition of Human Factors Methods: A Practical Guide for Engineering and Design now presents 107 design and evaluation methods including numerous refinements to those that featured in the original. The book acts as an ergonomics methods manual, aiding both students and practitioners. Offering a 'how-to' text on a substantial range of ergonomics methods, the eleven sections represent the different categories of ergonomics methods and techniques that can be used in the evaluation and design process.
Military command and control is not merely evolving, it is co-evolving. Technology is creating new opportunities for different types of command and control, and new types of command and control are creating new aspirations for technology. The question is how to manage this process, how to achieve a jointly optimised blend of socio and technical and create the kind of agility and self-synchronisation that modern forms of command and control promise. The answer put forward in this book is to re-visit sociotechnical systems theory. In doing so, the problems of 21st century command and control can be approached from an alternative, multi-disciplinary and above all human-centred perspective. Human factors (HF) is also co-evolving. The traditional conception of the field is to serve as a conduit for knowledge between engineering and psychology yet 21st century command and control presents an altogether different challenge. Viewing military command and control through the lens of sociotechnical theory forces us to confront difficult questions about the non-linear nature of people and technology: technology is changing, from platform centric to network centric; the interaction with that technology is changing, from prescribed to exploratory; and complexity is increasing, from behaviour that is linear to that which is emergent. The various chapters look at this transition and draw out ways in which sociotechnical systems theory can help to understand it. The sociotechnical perspective reveals itself as part of a conceptual toolkit through which military command and control can be transitioned, from notions of bureaucratic, hierarchical ways of operating to the devolved, agile, self-synchronising behaviour promised by modern forms of command and control like Network Enabled Capability (NEC). Sociotechnical system theory brings with it a sixty year legacy of practical application and this real-world grounding in business process re-engineering underlies the entire book. An attempt has been made to bring a set of sometimes abstract (but no less useful) principles down to the level of easy examples, design principles, evaluation criteria and actionable models. All of these are based on an extensive review of the current state of the art, new sociotechnical/NEC studies conducted by the authors, and insights derived from field studies of real-life command and control. Time and again, what emerges is a realisation that the most agile, self-synchronising component of all in command and control settings is the human.
This work provides a pan-European survey of the Jacobite phenomenon. It examines Jacobitism in all three kingdoms - and offers an interpretation of the impact of the Jacobites on the history of Britain and Europe. This book also provides a survey of the debates that still surround the subject and acquaints the student with the most recent writing and research. Szechi explains what Jacobitism was and what it did. He then goes on to examine who the Jacobites were, particularly focusing on their socio-economic status, social networks and religious affiliations. He also looks in detail at the ideology of Jacobitism and the rediscovered voice of popular Jacobitism. Additionally, such areas as the Irish dimension and the Jacobite diaspora are explored. This textbook aims to lead students clearly and thoroughly through one of the most complex subjects in 18th century history.
The Idea of the Cottage in English Architecture is a history of the late Georgian phenomenon of the architect-designed cottage and the architectural discourse that articulated it. It is a study of small buildings built on country estates, and not so small buildings built in picturesque rural settings, resort towns and suburban developments. At the heart of the English idea of the cottage is the Classical notion of retreat from the city to the countryside. This idea was adopted and adapted by the Augustan-infused culture of eighteenth-century England where it gained popularity with writers, artists, architects and their wealthy patrons who from the later eighteenth century commissioned retreats, gate-lodges, estate workers' housing and seaside villas designed to 'appear as cottages'. The enthusiasm for cottages within polite society did not last. By the mid-nineteenth century, cottage-related building and book publishing had slowed and the idea of the cottage itself was eventually lost beneath the Tudor barge-boards and decorative chimneystacks of the Historic Revival. And yet while both designer and consumer have changed over time, the idea of the cottage as the ideal rural retreat continues to resonate through English architecture and English culture.
Lacking the romantic imagery of the 1745 uprising of supporters of Bonnie Prince Charlie, the Jacobite rebellion of 1715 has received far less attention from scholars. Yet the ’15, just eight years after the union of England and Scotland, was in fact a more significant threat to the British state. This book is the first thorough account of the Jacobite rebellion that might have killed the Act of Union in its infancy. Drawing on a substantial range of fresh primary resources in England, Scotland, and France, Daniel Szechi analyzes not only large and dramatic moments of the rebellion but also the smaller risings that took place throughout Scotland and northern England. He examines the complex reasons that led some men to rebel and others to stay at home, and he reappraises the economic, religious, social, and political circumstances that precipitated a Jacobite rising. Shedding new light on the inner world of the Jacobites, Szechi reveals the surprising significance of their widely supported but ultimately doomed rebellion.
This book describes the major achievements and discoveries relevant to bacterial protein toxins since the turn of the new century illustrated by the discovery of more than fifty novel toxins (many of them identified through genome screening). The establishment of the three-dimensional crystal structure of more than 20 toxins during the same period offers deeper knowledge of structure-activity relationships and provides a framework to understand how toxins recognize receptors, penetrate membranes and interact with and modify intracellular substrates. - Edited by two of the most highly regarded experts in the field from the Institut Pasteur, France - 14 brand new chapters dedicated to coverage of historical and general aspects of toxinology - Includes the major toxins of both basic and clinical interest are described in depth - Details applied aspects of toxins such as therapy, vaccinology, and toolkits in cell biology - Evolutionary and functional aspects of bacterial toxins evaluated and summarized - Toxin applications in cell biology presented - Therapy (cancer therapy, dystonias) discussed - Vaccines (native and genetically engineered vaccines) featured - Toxins discussed as biological weapons, comprising chapters on anthrax, diphtheria, ricin etc.
A comprehensive reference on diabetes mellitus, covering basic biochemistry, physiology, and pathogenesis, as well as clinical diagnosis and treatment. The Sixth Edition includes five new chapters, plus new material on the genetic basis of the disease, new hypoglycemic drugs, mechanisms of hormone action, and regulation of hormone secretion.
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