OBJECT-ORIENTED ANALYSIS AND DESIGN CONCEPTS OF SPACE AND TIME Phần 3 ppsx

... Uncovering space- time paths 24 2.12 Conclusions 25 3 Object-oriented analysis and design 27 3. 1 History of the object-oriented paradigm 27 3. 2 Choosing an object-oriented method 32 3. 3 The main ... 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 relative spa...

Ngày tải lên: 08/08/2014, 00:23

... 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. ... Zealand in 19 53 time space (c) New Zealand in 1970 time space. (Reprinted by permission of Oxford Press. Source Gatrell 19 83, p. 111) Table 2 .3 Main charac...

Ngày tải lên: 08/08/2014, 00:23

... method (Shlaer and Mellor, 1988). OBJECT-ORIENTED ANALYSIS AND DESIGN 35 time, the state of an object involves all properties of this object (usually static) as well as the current values of these ... prospect of an object-oriented design method. His method improves the concepts of object orientation and their respective notations as a whole, overlapping with the...

Ngày tải lên: 08/08/2014, 00:23

... 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 ... present and future. The actual notion of present, past and future in the STDM relies on the Table 4.1 Main abstractions defined for a space- time path. OBJE...

Ngày tải lên: 08/08/2014, 00:23

... there exists a space- time path between the instances of the Assumption class and the GroundFeature class. In terms of Figure 6 .3 Execution of the public boundary entry scenario—stage 3 ... understanding of the STDM and the information stored in the database. 6.7 CONCLUSIONS This chapter has illustrated some examples of how space- time paths can be created by a user. T...

Ngày tải lên: 08/08/2014, 00:23

... 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...

Ngày tải lên: 08/08/2014, 00:23

... 37 sub-typing 37 table versioning 42 taxonomy of time 39 TEMPEST 12 temporal databases 39 temporal logic 11 time 17 absolute time 11 cyclical time 13 dimension 38 timestamp 10 relative time 13, 16 user-defined ... analysis methods 31 object-oriented analysis and design methods 32 choosing a method 32 literature review 27 main modelling constructs 36 o...

Ngày tải lên: 08/08/2014, 00:23