Author: Zeljko Obrenovic Publisher: Createspace Independent Publishing Platform ISBN: 9781978330092 Category : Languages : en Pages : 140
Book Description
Designers deal with an overwhelmingly rich reality, undetermined requirements, highly intricate social situations, lack of information, as well as lack of resource and time restrictions. Every designer is faced and challenged by this complexity. A central thesis explored in this book is that complexity characteristic for design activities emerges from an inherent *instability of design activities*. We will argue that this instability is a consequence of messy, dynamic, highly interdependent and unpredictable dynamics between design situations, design outcomes, and design resources. Design situations, design outcomes and design resources are complex structures that are not independent of each other. They are also continuously changing, in great part due to forces that are beyond designers' control. In this book, we describe 11 patterns of design dynamics. The patterns of dynamics illustrate how designers deal with ambiguity, uncertainty, and complexity when they attempt to change the world. As such, these patterns are universal to all design disciplines. Design disciplines may differ in which situations they address, which outcomes they create and which resources they use. But the way how people deal with ambiguity, uncertainty, and complexity is cross-disciplinary. Consequently, we present examples of patterns of dynamics from a very diverse set of design disciplines. Patterns of Design Dynamics: Co-evolution of Problem-Solution Puzzle Solving Solution Looking for a Problem Pandora's Box The Force Awakens Your Design Is Your Reflection You Are a Reflection of Your Design Design-by-Buzzword Conformity Commitment Cherry Picking
Author: David T. Harrje Publisher: ISBN: Category : Liquid propellant rockets Languages : en Pages : 668
Book Description
The solution of problems of combustion instability for more effective communication between the various workers in this field is considered. The extent of combustion instability problems in liquid propellant rocket engines and recommendations for their solution are discussed. The most significant developments, both theoretical and experimental, are presented, with emphasis on fundamental principles and relationships between alternative approaches.
Author: Vigor Young Publisher: AIAA ISBN: 9781600864186 Category : Liquid propellant rockets Languages : en Pages : 606
Book Description
Annotation Since the invention of the V-2 rocket during World War II, combustion instabilities have been recognized as one of the most difficult problems in the development of liquid propellant rocket engines. This book is the first published in the United States on the subject since NASA's Liquid Rocket Combustion Instability (NASA SP-194) in 1972. In this book, experts cover four major subject areas: engine phenomenology and case studies, fundamental mechanisms of combustion instability, combustion instability analysis, and engine and component testing. Especially noteworthy is the inclusion of technical information from Russia and China--a first.
Author: Robin G. McInnes Publisher: Thomas Telford ISBN: 9780727731326 Category : Science Languages : en Pages : 776
Book Description
During 2000/2001 exceptionally high winter rainfall resulted in major ground instability problems on the Isle of Wight, and coincided with the completion of important research on the predicted impacts of climate change on unstable coastal and mountainous areas. These proceedings highlight the importance of implementing coastal and landslide management strategies and integrating the research findings into strategic planning and development control policies.
Author: Michal Polak Publisher: Oxford University Press, USA ISBN: 9780195143454 Category : Language Arts & Disciplines Languages : en Pages : 488
Book Description
The field of developmental instability has generated a large amount of controversy recently, mostly because of fierce disagreement over the genetic basis of fluctuating asymmetry and its role in mate selection. This book is a timely and innovative critical evaluation of a burgeoning field. The book explores the premise that complex organismal, ecological and evolutionary processes can be understood as emergent properties of the "epigenetic machine," that is, the mechanisms fundamental to all organisms responsible for building and organizing phenotypes from information translated from DNA.
Author: Edward M. Lenoe Publisher: Springer Science & Business Media ISBN: 1468410334 Category : Technology & Engineering Languages : en Pages : 858
Book Description
The Fourth Conference on Fibrous Composites in Structural Design was a successor to the First-to-Third Conferences on Fibrous Composites in Flight Vehicle Design sponsored by the Air Force (First and Second Conferences, September 1973 and May 1974) and by NASA (Third Conference, November 1975) which were aimed at focusing national attention on flight vehicle applications of a new class of fiber reinforced materials, the advanced com posites, which afforded weight savings and other advantages which had not been previously available. The Fourth Conference, held at San Diego, California, 14-17 November 1978, was the fi rst of these conferences to be jointly sponsored by the Army, Navy and Ai r Force together with NASA, as well as being the first to give attention to non-aerospace applications of fiber reinforced composites. While the design technology for aerospace applications has reached a state of relative maturity, other areas of application such as mi litary bridging, flywheel energy storage systems, ship and surface vessel components and ground vehicle components are in an early stage of development, and it was an important objective to pinpoint where careful attention to structural design was needed in such applications to achfeve maximum structural performance payoff together with a high level of reliability and attractive economics.
Author: C. Steve Suh Publisher: John Wiley & Sons ISBN: 1118402782 Category : Technology & Engineering Languages : en Pages : 295
Book Description
Presents new developments on machine tool vibration control based on discontinuous dynamical systems Machining instability is a topical area, and there are a wide range of publications that cover the topic. However, many of these previous studies have started by assuming that the behavior of the system can be linearised. Meanwhile, there are many recent advances in the fields of signal processing, nonlinear dynamics, and nonlinear control, all of which are relevant to the machining stability problem. This book establishes the fundamentals of cutting mechanics and machine tool dynamics in the simultaneous time-frequency domain. The new nonlinear control theory developed by the authors that facilitates simultaneous control of vibration amplitude in the time-domain and spectral response in the frequency-domain provides the foundation for the development of a controller architecture universally viable for the control of dynamic instability including bifurcation and chaos. Once parameters underlying the coupling, interaction, and evolution of different cutting states and between the tool and workpiece are established, they can then be incorporated into the architecture to create a control methodology that mitigate machining instability and enable robust, chatter-free machine tool design applicable in particular to high speed micro- and nano-machining. Presents new developments on machine tool vibration control based on discontinuous dynamical systems Provides a clear and concise approach to the understanding and control of machine tool and workpiece vibrations from an alternative view, contributing to an in-depth understanding of cutting dynamics and robust control of machining instability Equips the reader with the knowledge to understand the dynamics of cutting and operation of machine-tool systems in different conditions as well as the concept of cutting instability control Includes data examples in MATLAB coding
Author: Zeljko Obrenovic
Author: David T. Harrje
Author: Vigor Young
Author: Robin G. McInnes
Author: Michal Polak
Author: 
Author: Edward M. Lenoe
Author: 
Author: C. Steve Suh
Author: E. William Conrad