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Spacecraft Modeling Attitude Determination and Control Quaternion-Based Approach

Spacecraft Modeling Attitude Determination and Control Quaternion-Based Approach

This book discusses all spacecraft attitude control-related topics: spacecraft (including attitude measurements actuator and disturbance torques) modeling spacecraft attitude determination and estimation and spacecraft attitude controls. Unlike other books addressing these topics this book focuses on quaternion-based methods because of its many merits. The book lays a brief but necessary background on rotation sequence representations and frequently used reference frames that form the foundation of spacecraft attitude description. It then discusses the fundamentals of attitude determination using vector measurements various efficient (including very recently developed) attitude determination algorithms and the instruments and methods of popular vector measurements. With available attitude measurements attitude control designs for inertial point and nadir pointing are presented in terms of required torques which are independent of actuators in use. Given the required control torques some actuators are not able to generate the accurate control torques therefore spacecraft attitude control design methods with achievable torques for these actuators (for example magnetic torque bars and control moment gyros) are provided. Some rigorous controllability results are provided. The book also includes attitude control in some special maneuvers such as orbital-raising docking and rendezvous that are normally not discussed in similar books. Almost all design methods are based on state-spaced modern control approaches such as linear quadratic optimal control robust pole assignment control model predictive control and gain scheduling control. Applications of these methods to spacecraft attitude control problems are provided. Appendices are provided for readers who are not familiar with these topics. | Spacecraft Modeling Attitude Determination and Control Quaternion-Based Approach

GBP 48.99
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Strategic Security Forward Thinking for Successful Executives

Strategic Security Forward Thinking for Successful Executives

Strategic Security will help security managers and those aspiring to the position to think strategically about their job the culture of their workplace and the nature of security planning and implementation. Security professionals tend to focus on the immediate (the urgent) rather than the important and essential—too often serving as firefighters rather than strategists. This book will help professionals consider their roles and structure their tasks through a strategic approach without neglecting their career objectives. Few security management books for professionals in the field focus on corporate or industrial security from a strategic perspective. Books on the market normally provide recipes methods or guidelines to develop plans policies or procedures. However many do so without taking into account the personal element that is supposed to apply these methods. In this book the authors helps readers to consider their own career development in parallel with establishing their organisation security programme. This is fundamental to becoming and serving as a quality effective manager. The element of considering career objectives as part-and-parcel to this is both unique to only this book and vital for long-term career success. The author delineates what makes strategic thinking different in a corporate and security environment. While strategy is crucial in the running of a company the traditional attitude towards security is that it has to fix issues quickly and at low cost. This is an attitude that no other department would tolerate but because of its image security departments sometimes have major issues with buy-in and from top-management. The book covers the necessary level of strategic thinking to put their ideas into practice. Once this is achieved the strategic process is explained including the need to build the different steps into this process—and into the overarching business goals of the organisation—will be demonstrated. The book provides numerous hand-on examples of how to formulate and execute the strategic master plan for the organization. The authors draws on his extensive experience and successes to serve as a valuable resource to all security professionals looking to advance their careers in the field. | Strategic Security Forward Thinking for Successful Executives

GBP 44.99
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Primary Care Nutrition Writing the Nutrition Prescription

Primary Care Nutrition Writing the Nutrition Prescription

This book contains the necessary knowledge and tools to incorporate nutrition into primary care practice. As a practical matter this effort is led by a dedicated primary care physician with the help of motivated registered dietitians nurses psychologists physical therapists and office staff whether within a known practice or by referral to the community. It is essential that the nutrition prescription provided by the physician be as efficient as possible. While many team members have superior knowledge in the areas of nutrition exercise and psychology the health practitioner remains the focus of patient confidence in a therapy plan. Therefore the endorsement of the plan rather than the implementation of the plan is the most important task of the physician. This book proposes a significant change in attitude of primary health care providers in terms of the power of nutrition in prevention and treatment of common disease. It features detailed and referenced information on the role of nutrition in the most common conditions encountered in primary care practice. In the past treatment focused primarily on drugs and surgery for the treatment of disease with nutrition as an afterthought. Advanced technologies and drugs are effective for the treatment of acute disease but many of the most common diseases such as heart disease diabetes and cancer are not preventable with drugs and surgery. While there is mention of prevention of heart disease this largely relates to the use of statins with some modest discussion of a healthy diet. Similarly prevention of type 2 diabetes is the early introduction of metformin or intensive insulin therapy. | Primary Care Nutrition Writing the Nutrition Prescription

GBP 46.99
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