OBJECT-ORIENTED ANALYSIS AND DESIGN CONCEPTS OF SPACE AND TIME Phần 8 ppt

... relative space- time view 14 2.7 Choosing the view for a GIS 16 2 .8 Time geography 16 2.9 Time geography and GIS 19 2.10 Main elements of a space- time path 20 2.10.1 State as an element of the space- time ... book 7 2 Concepts of space and time 9 2.1 The space- dominant view 9 2.2 The time- dominant view 11 2.3 The absolute space- time view 12 2.4 The rela...

... in space and time, i.e. the space- time path (relative space- time view). However, by having space and time as orthogonal dimensions, Time Geography requires the absolute view of space and time. ... structures of a space- time path: identity, location and direction. Any OBJECT-ORIENTED DESIGN FOR TEMPORAL GIS 26 (1977), Carlstein, Parkes and Thrift (19 7...

... time has been proposed for event time (Copeland and Maier, 1 984 ), effective time (Ben-Zvi, 1 982 ), logical time (Dadam, Lum and Werner, 1 984 ; Lum et al., 1 984 ), state (Clifford and Warren, 1 983 ) ... method (Shlaer and Mellor, 1 988 ). OBJECT-ORIENTED ANALYSIS AND DESIGN 35 time, the state of an object involves all properties of this object (usually static...

... nearness of states and events on the space- time path of a lifespan of an entity. The demise circumstance characterises the closure of a space- time path. It can occur on the space- time path at any time ... chapter. OBJECT-ORIENTED DESIGN FOR TEMPORAL GIS 46 feasibility of applying object-oriented methods to the problem of handling space and time in GIS....

... examples of how space- time paths can be created by a user. The states and events designed in the STDM are visualised as edit menus within the system. This allows a better understanding of how space- time ... Defanti and Brown, 1 987 ) so users need to have a natural acuity for recognising and interpreting visual patterns (Fedra, 1992; Buttenfield, 1993), and an intuitive un...

... data model capture the synergy between space and time of a space- time path in Time Geography. In terms of STDM, spatio-temporal data types offer the advantage of defining object classes with properties ... simultaneously defined in space and time (2D space, time) . An event in space and time can be defined as (point, point). Otherwise an event having a certain...

... maps 35 space 17 absolute space 9 relative space 13, 16 space- time entity representation 5 space- time maps 14 space- time path 16, 20–5 configuration 21, 47 creation 58, 84 demise 61, 89 direction ... Journal of Geographical Information Sciences, in Press. INDEX 1 18 Smalltalk 28, 32 Smallworld 19, 30, 39, 90 case tool 81 magik 82 , 87 object-oriented features 8...