Derek Hatley's Books

Process for System Architecture and Requirements Engineering

By: Derek Hatley,Peter Hruschka,Imtiaz Pirbhai

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Process for System Architecture and Requirements Engineering

By: Derek Hatley,Peter Hruschka,Imtiaz Pirbhai

This is the digital version of the printed book (Copyright © 2000). Derek Hatley and Imtiaz Pirbhai—authors of Strategies for Real-Time System Specification—join with influential consultant Peter Hruschka to present a much anticipated update to their widely implemented Hatley/Pirbhai methods. Process for System Architecture and Requirements Engineering introduces a new approach that is particularly useful for multidisciplinary system development: It applies equally well to all technologies and thereby provides a common language for developers in widely differing disciplines. The Hatley-Pirbhai-Hruschka approach (H/H/P) has another important feature: the coexistence of the requirements and architecture methods and of the corresponding models they produce. These two models are kept separate, but the approach fully records their ongoing and changing interrelationships. This feature is missing from virtually all other system and software development methods and from CASE tools that only automate the requirements model. System managers, system architects, system engineers, and managers and engineers in all of the diverse engineering technologies will benefit from this comprehensive, pragmatic text. In addition to its models of requirements and architecture and of the development process itself, the book uses in-depth case studies of a hospital monitoring system and of a multidisciplinary groundwater analysis system to illustrate the principles. Compatibility Between the H/H/P Methods and the UML: The Hatley/Pirbhai architecture and requirements methods—described in Strategies for Real-Time System Specification—have been widely used for almost two decades in system and software development. Now known as the Hatley/Hruschka/Pirbhai (H/H/P) methods, they have always been compatible with object-oriented software techniques, such as the UML, by defining architectural elements as classes, objects, messages, inheritance relationships, and so on. In Process for System Architecture and Requirements Engineering, that compatibility is made more specific through the addition of message diagrams, inheritance diagrams, and new notations that go with them. In addition, state charts, while never excluded, are now specifically included as a representation of sequential machines. These additions make definition of the system/software boundary even more straightforward, while retaining the clear separation of requirements and design at the system levels that is a hallmark of the H/H/P methods—not shared by most OO techniques. Once the transition to software is made, the developer is free to continue using the H/H/P methods, or to use the UML or any other software-specific technique.

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Page Count

467

Publisher

Addison-Wesley

Published Date

ISBN 10

0133488543

ISBN 13

9780133488548

Strategies for Real-Time System Specification

By: Derek Hatley,Imtiaz Pirbhai

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Strategies for Real-Time System Specification

By: Derek Hatley,Imtiaz Pirbhai

This is the digital version of the printed book (Copyright © 1987). Here is a casebook, a practical reference, and an indispensable guide for creating a systematic, formal methodology for large, real-time, software-based systems. The book introduces the widely implemented Hatley/Pirbhai methods, a major extension of the DeMarco analysis method describing how external events control the system's operating behavior. The techniques are used in major avionics and electronics companies worldwide, and are automated by most major CASE tools, including TurboCASE/Sys by StructSoft, Inc. Large software-based systems, especially those for real-time applications, require multi-mode operation, direct interaction with a rapidly changing physical environment, and fast response times. In the past, the development of such systems was prone to massive cost and schedule overruns, and to inadequate performance and reliability. Strategies for Real-Time System Specification addresses these problems by integrating a finite-state machine structure into classical analysis methods. The book contains nearly 200 diagrams, many of which illustrate the requirements specification of a flight management system for a major avionics developer.

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581

Publisher

Addison-Wesley

Published Date

ISBN 10

0133492354

ISBN 13

9780133492354

A Tale of Trees

How Britain Nearly Lost its Ancient Woodland

By: Derek Niemann

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A Tale of Trees

How Britain Nearly Lost its Ancient Woodland

By: Derek Niemann

We are a nation that loves its ancient woods and trees. But in the space of just 40 years, more than a third of our ancient woods were destroyed. How and why did this happen? A Tale of Trees is the untold story of how we nearly lost our greatest national treasure.

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Page Count

159

Publisher

Short Books

Published Date

ISBN 10

1780722761

ISBN 13

9781780722764

Mechatronics and the Design of Intelligent Machines and Systems

By: David Allan Bradley,Derek Seward,David Dawson,Stuart Burge

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Mechatronics and the Design of Intelligent Machines and Systems

By: David Allan Bradley,Derek Seward,David Dawson,Stuart Burge

Mechatronics as a discipline has an ever growing impact on engineering and engineering education as a defining approach to the design, development, and operation of an increasingly wide range of engineering systems. The increasing scope and complexity of mechatronic systems means that their design and development now involve not only the technical aspects of its core disciplines, but also aspects of organization, training, and management. Mechatronics and the Design of Intelligent Machines and Systems reflects the significant areas of development in mechatronics and focuses on the higher-level approaches needed to support the design and implementation of mechatronic systems. Throughout the book, the authors emphasize the importance of systems integration. Each chapter deals with a particular aspect of the design and development process, from the specification of the system to software design and from the human-machine interface to the requirements for safe operation and effective manufacture. Notable among this text's many features is the use of a running case study-the autonomous and robotic excavator LUCIE-to illustrate points made in various chapters. This, combined with the authors' clear prose, systematic organization, and generous use of examples and illustrations provides students with a firm understanding of mechatronics as a discipline, some of the problems encountered in its various areas, and the developing techniques used to solve those problems.

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Page Count

361

Publisher

CRC Press

Published Date

ISBN 10

1482268396

ISBN 13

9781482268393

Poorly Soluble Drugs

Dissolution and Drug Release

By: Gregory K. Webster,Robert G. Bell,J. Derek Jackson

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Poorly Soluble Drugs

Dissolution and Drug Release

By: Gregory K. Webster,Robert G. Bell,J. Derek Jackson

This book is the first text to provide a comprehensive assessment of the application of fundamental principles of dissolution and drug release testing to poorly soluble compounds and formulations. Such drug products are, vis-à-vis their physical and chemical properties, inherently incompatible with aqueous dissolution. However, dissolution methods are required for product development and selection, as well as for the fulfillment of regulatory obligations with respect to biopharmaceutical assessment and product quality understanding. The percentage of poorly soluble drugs, defined in classes 2 and 4 of the Biopharmaceutics Classification System (BCS), has significantly increased in the modern pharmaceutical development pipeline. This book provides a thorough exposition of general method development strategies for such drugs, including instrumentation and media selection, the use of compendial and non-compendial techniques in product development, and phase-appropriate approaches to dissolution development. Emerging topics in the field of dissolution are also discussed, including biorelevant and biphasic dissolution, the use on enzymes in dissolution testing, dissolution of suspensions, and drug release of non-oral products. Of particular interest to the industrial pharmaceutical professional, a brief overview of the formulation and solubilization techniques employed in the development of BCS class 2 and 4 drugs to overcome solubility challenges is provided and is complemented by a collection of chapters that survey the approaches and considerations in developing dissolution methodologies for enabling drug delivery technologies, including nanosuspensions, lipid-based formulations, and stabilized amorphous drug formulations.

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Page Count

728

Publisher

CRC Press

Published Date

ISBN 10

9814745464

ISBN 13

9789814745468

A Brief History of Circumnavigators

By: Derek Wilson

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A Brief History of Circumnavigators

By: Derek Wilson

Going round the world" is an idea that has excited people ever since it was realized that the earth was a sphere. The appeal has something to do with encompassing all the known environment and exploring the unknown, not only on the surface of the planet but within the spirit of the explorer. The story of circumnavigation is thus a long saga of human adventure, travel and discovery. Beginning with the fateful day in 1521 when Ferdinand Magellan was speared to death on Mactan and Juan de Elcano took up the challenge of bringing his surviving companions home, the story continues through four centuries crammed with astonishing exploits by men and women of many nations. Some of the names that feature are well-known, others less so.

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Page Count

271

Publisher

Robinson

Published Date

ISBN 10

1472113292

ISBN 13

9781472113290

Citizens of a Christian Nation

Evangelical Missions and the Problem of Race in the Nineteenth Century

By: Derek Chang

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Citizens of a Christian Nation

Evangelical Missions and the Problem of Race in the Nineteenth Century

By: Derek Chang

In America after the Civil War, the emancipation of four million slaves and the explosion of Chinese immigration fundamentally challenged traditional ideas about who belonged in the national polity. As Americans struggled to redefine citizenship in the United States, the "Negro Problem" and the "Chinese Question" dominated the debate. During this turbulent period, which witnessed the Supreme Court's Plessy v. Ferguson decision and passage of the Chinese Exclusion Act, among other restrictive measures, American Baptists promoted religion instead of race as the primary marker of citizenship. Through its domestic missionary wing, the American Baptist Home Missionary Society, Baptists ministered to former slaves in the South and Chinese immigrants on the Pacific coast. Espousing an ideology of evangelical nationalism, in which the country would be united around Christianity rather than a particular race or creed, Baptists advocated inclusion of Chinese and African Americans in the national polity. Their hope for a Christian nation hinged on the social transformation of these two groups through spiritual and educational uplift. By 1900, the Society had helped establish important institutions that are still active today, including the Chinese Baptist Church and many historically black colleges and universities. Citizens of a Christian Nation chronicles the intertwined lives of African Americans, Chinese Americans, and the white missionaries who ministered to them. It traces the radical, religious, and nationalist ideology of the domestic mission movement, examining both the opportunities provided by the egalitarian tradition of evangelical Christianity and the limits imposed by its assumptions of cultural difference. The book further explores how blacks and Chinese reimagined the evangelical nationalist project to suit their own needs and hopes. Historian Derek Chang brings together for the first time African American and Chinese American religious histories through a multitiered local, regional, national, and even transnational analysis of race, nationalism, and evangelical thought and practice.

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Page Count

246

Publisher

University of Pennsylvania Press

Published Date

ISBN 10

0812205952

ISBN 13

9780812205954

Process for System Architecture and Requirements Engineering

By: Derek Hatley,Peter Hruschka,Imtiaz Pirbhai

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Process for System Architecture and Requirements Engineering

By: Derek Hatley,Peter Hruschka,Imtiaz Pirbhai

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467

Publisher

Addison-Wesley

Published Date

ISBN 10

0133488543

ISBN 13

9780133488548

Strategies for Real-Time System Specification

By: Derek Hatley,Imtiaz Pirbhai

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Strategies for Real-Time System Specification

By: Derek Hatley,Imtiaz Pirbhai

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581

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Addison-Wesley

Published Date

ISBN 10

0133492354

ISBN 13

9780133492354

Book's by Derek Hatley

Process for System Architecture and Requirements Engineering

Process for System Architecture and Requirements Engineering

Strategies for Real-Time System Specification

Strategies for Real-Time System Specification

A Tale of Trees

A Tale of Trees

Mechatronics and the Design of Intelligent Machines and Systems

Mechatronics and the Design of Intelligent Machines and Systems

Poorly Soluble Drugs

Poorly Soluble Drugs

A Brief History of Circumnavigators

A Brief History of Circumnavigators

Citizens of a Christian Nation

Citizens of a Christian Nation

Process for System Architecture and Requirements Engineering

Process for System Architecture and Requirements Engineering

Strategies for Real-Time System Specification

Strategies for Real-Time System Specification

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