Software Design Models, Tools Processes（软件设计模型、工具的过程）.pdfVIP

Software Design Models, Tools Processes * Lecture 1: Software Design and Software Development Process Cecilia Mascolo *ThankstoAlanBlackwellandJim Arlowforlengmeusesomeoftheir slides. About Me •  Reader in Mobile Systems –  Systems Research Group •  Research on Mobile, Social and Sensor Systems •  More specifically, mobility modelling –  Instrumentation (sensing and mobile sensing) –  Analysis (social and complex networks) –  Exploitation (eg, recommender systems) Software Design •  Software Design is about modelling software systems •  “A system is an organised or complex whole: an assemblage or combination of things or parts forming a complex or unitary whole.” (Kast Rosenzweig) •  “A system is a set of interrelated elements” (Ackoff) LibrarySystem BooksDB UsersDB UserInterface Everyday Words “it is in the system”, “the system failed”, “rage against the system”, “you can’t buck the system”, “the system is down”, “the economic system”, “in-car stereo system”, “biological system”, “paperwork system”, “the financial environment”, “closed system”, “open system”, “dynamic system”, “in equilibrium” Weusethese“systemwords” alot.Whatdotheymean Organisation •  The predominant mode of organisation is hierarchical. Systems are composed of sub- systems, sub-systems are composed of sub-sub- systems and so on. •  In very complex cases we talk of “systems of systems” Example:Robotanditscomponents