9 tales of space and time

... (Armenhakis, 1993; Egenhofer and Al-Taha, 1992; Svensson and Huang, 1991) Only recently has there been an increase in research efforts for combining spatial and temporal database developments One of the ... 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 period of time could be defined as (point,

Ngày tải lên: 08/08/2014, 00:23

... in space and space-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 ... 1Figure 2.3 (a) New Zealand in absolute space (b) New Zealand in 1953 time space (c) NewZealand in 1970 time space (Reprinted by permission of Oxford Press Source Gatrell 1983, p 111) Table 2.3 ... representation) Space and time are joined in a single space-time path Space and time are considered inseparable within a path, and it is the timing component which gives structure to space and thus

Ngày tải lên: 08/08/2014, 00:23

... reference object-oriented data model (NIST, 1991; ODMG, 1994; Kim, 1991) Although the ANSI Standards Committee has not yet recognised the ODMG-93 as an official standard, they have begun to define some ... Pircher and Muller (1990). 5 Object-Oriented Design LanguagE is a design-specific component of the Shlaer-Mellor method (Shlaer and Mellor, 1988). Trang 2incisive and comprehensive prospect of an ... actually a generalisation of event diagrams of the dynamic model of OMT (Rumbaugh et al., 1991) combined with the interaction diagrams of Jacobson’s method (Jacobson et al., 1992). Booch’s method distinguishes

Ngày tải lên: 08/08/2014, 00:23

... involved in each of these elements of a space-time path The origin of a space-time path can be associated with an event element or a state element For instance, the creation of a space-time path can ... space-time path, not the space-time path itself The historical view of the observer is reduced to the perception of nearness of states and events on the space-time path of a lifespan of an entity The ... the closure of a space-time path It can occur on the space-time path at any time during the lifespan of an entity The effectiveness of the STDM in handling the creation, evolution and demise circumstances

Ngày tải lên: 08/08/2014, 00:23

... Demarcation classes The origin of a space-time path in the VMDS can never be modified In this example the origin of a space-time path is created once the properties of the Assumption class have ... creation of a space-time path It shows the properties previously defined for the Assumption class of the STDM: statement, validated, and valid from/to In this example the boundary commission demand ... view of the VMDS This is still true even though the space-time path does not exist at this stage In other words, the relationship between the instance of the Assumption class and the instance of

Ngày tải lên: 08/08/2014, 00:23

... Dynamic and Mobile GIS: Investigating Changes in Space and Time Edited by Jane Drummond, Roland Billen, Elsa João and David Forrest © 2006 Taylor & Francis Chapter 9 Generalisation of Large-Scale ... Suchith Anand1, J Mark Ware2 and George Taylor2 1 Centre for Geospatial Science, University of Nottingham, England 2 Faculty of Advanced Technology, University of Glamorgan, Wales 9.1 Introduction ... implementation of this algorithm is described in Section 9.7, and some experimental results are presented The chapter concludes in Section 9.8 with a summary of the results and a discussion of future

Ngày tải lên: 12/08/2014, 04:22

... Z) (Brooks & Vokey,1991; Mathews et al., 1989; Reber, 1969; Shanks, Johnstone, & Staggs, 1997)and even across sense modalities (Altmann, Dienes, & Goode, 1995) Thissuggests that what ... arising out of the use of this material. Trang 2Seeing and hearing in space and time: Effects of modality and presentation rate on implicit statistical learningChristopher M Conway Department of Psychological ... M SE t(11) Visual-temporal 9.9 0.53 0.16 8.9 0.65 1.68Visual-spatial 9.3 0.69 0.97 9.25 0.54 1.39Auditory 10.8 0.47 1.76 10.75 0.48 1.57 Mean values reported out of 20 possible correct T-tests

Ngày tải lên: 12/10/2022, 20:55

... coffee acidity (FigureS2undS3) For the test data AUC values for acidity were 0.989–0.993, whereas the test data kmax values were 0.957–0.98 For flavor, test-data AUC and kmax values were 0.989–0.995 ... values were 0.989–0.995 and 0.932–0.98, respectively Fig 3 Suitability change of flavor and acidity by 2050 as average of the 25 CaNaSTA ensemble members (left) and current and future quality ... sensitivity of coffee (Coffea arabica) and the likely impact of climate change on coffee suitability, yield, increased pest and disease pressure and farmers’ liveli-hoods The objectives of this paper

Ngày tải lên: 19/11/2022, 11:40

... GIS, and remote sensing increase the availability of large-scale ecological data, most often collected at coarse grains (Lonsdale 1993; Castle 1998; Withers & Meentemeyer 1999).The use of fractal ... are dependent upon the spatial scale (i.e extent and resolution) of observations and analysis (Levin 1992; Zajac et al 1998; Murdoch & Aronson 1999; Englund et al 2001; Saunders et al 2002) For ... et al 1984; Hulme & Borelli 1999; Meyer & Schmid 1999).On the other hand, soil disturbances can remove seeds from the seed bank by improving germination conditions (Eriksson & Eriksson 1997; Fisher

Ngày tải lên: 02/10/2024, 01:43

... is a professor at the New University of Lisbon and has been a visiting professor at both Cornell University (1988-89) and MIT (1998-99) He was a senior consultant in the Expo98 project and senior ... geographical and socio-economic analysis, but it was in the 1990s that STIS really began to take off (Langran, 1993; Worboys, 1994a) Time in this volume has been promoted to the volume theme, ‘Dynamic and ... (p ) ISBN 0‑8493‑9092‑3 Geographic information systems Mobile communication systems Space and time I Drummond, Jane, 1950‑ II Billen, Roland III Title IV Series G70.212.D96 2007 910.285‑‑dc22

Ngày tải lên: 12/08/2014, 04:22

... The first includes COO (cell of origin) positioning, TOA (time of arrival), AOA (angle of arrival), TDOA (time difference of arrival), and E-OTD (enhanced-observed time difference) positioning ... anytime’ The rate of mobile multi-media communications via satellite is 96 KB per second, which is twice the rate of current 2 and 2.5G mobile communication systems Within 3G systems, the rate of ... Dynamic and Mobile GIS: Investigating Changes in Space and Time Edited by Jane Drummond, Roland Billen, Elsa João and David Forrest © 2006 Taylor & Francis

Ngày tải lên: 12/08/2014, 04:22

... Brinn (1999) and Etzioni (1999), have argued for greater transparency in place of privacy Proponents of greater transparency cite the practical difficulties of protecting privacy in the face of changing ... al., 1999), and collaborative user interfaces (Hudson and Smith, 1996) The need for location privacy is recognised in some of the earliest literature on information privacy (e.g Westin, 1967) and ... (Schmidt et al., 1999) Location information is one of the most important aspects of an individual’s (physical) context (see, for example, Ljungstrand’s discussion of context awareness and mobile phones,

Ngày tải lên: 12/08/2014, 04:22

... dominating metaphysics (Hartshorne, 1998; Rosenthal, 1999), as well as GIScience ontologies (for example, Casati et al., 1998; Fonseca and Egenhofer, 1999; Smith and Mark, 1998; Thomasson, 2001) Spatiotemporal ... Wasserman and Faust, 1994) and physics (e.g Dorogovtsev and Mendes, 2002) The network described by nens may be of a single type of process, such as Hortonian overland flow, or of a collection of different ... information on direction and velocity of processes Determining the average direction and average velocity of a certain type of process may be of particular import to analysing and understanding climate

Ngày tải lên: 12/08/2014, 04:22

... (Hunter, 1996) and the source of errors (Collins and Smith, 1994) such as during data collection, data input, data storage, data manipulation, data output and the use of results. Cockcroft (1997) ... Dynamic and Mobile GIS: Investigating Changes in Space and Time 136 WHERE s.fl_line_id > 0 and s.fl_line_id=r.object_id and s.tmax=0 and s.ogroup=6 and r.tmax=0 and r.ogroup=6 ... have any number of islands (and the number of islands is encoded as an explicit attribute), it must be checked whether the correct number of parcel references are specified and if they all

Ngày tải lên: 12/08/2014, 04:22

... (1 895 ) ã A Modern Utopia ( 190 5) ã The Invisible Man (1 897 ) ã The Island of Dr. Moreau (1 896 ) ã The Food of the Gods and How It Came to Earth ( 190 4) ã The Sleeper Awakes ( 191 0) ã The Story of ... swift and white behind. And then death. China was lit glowing white, but over Japan and Java and all the is- lands of Eastern Asia the great star was a ball of dull red fire because of the steam and ... stick with strips of rabbit skin. And afterwards he walked up and down the ledge, striking with it, and muttering to himself, and thinking of Uya. It felt very fine and heavy in the hand. Several...

Ngày tải lên: 22/03/2014, 23:20

... Produces Spacetime Curvature, and Spacetime Curvature Determines the Motion of Mass. Einstein’s equation makes a quantitative connection be- tween mass and the amount of curvature of spacetime it ... Structure of Space and Time http://www.nap.edu/catalog /96 80.html 22 GRAVITATIONAL PHYSICS: EXPLORING THE STRUCTURE OF SPACE AND TIME ã Measure the temperature and polarization fluctuations of the ... implications—from cosmology and black hole physics, to a new understanding of space and time, to a possible unification of all of the known forces and particles in natureare enormous. Copyright â National Academy of...

Ngày tải lên: 12/02/2014, 16:20

... Unified Framework?, 34 What Do the Properties of Particles Reveal About the Nature and Origin of Matter and the Properties of Space and Time? , 39 What Are Dark Energy and Dark Matter and How Has Quantum Mechanics ... Secretary of Energy and the Director of the Na- tional Science Foundation, working with the White House Office of Science and Technology Policy and the Office of Management and Budget and in consultation ... Nature of Space and Time: Charting the Course for Elementary Particle Physics http://www.nap.edu/catalog/11641.html R EVEALING THE HIDDEN NATURE OF SPACE AND TIME 26 tance of the interdependence of...

Ngày tải lên: 14/03/2014, 10:20

... hyperbolic and let p and q be points of U that can be joined by a time like or null curve. Then there is a time like or null geodesic between p and q which maximizes the length of time like or ... Euclidean spacetime. This spacetime is periodic in the imaginary time direction with period β = T −1 . If one does the path integral in flat spacetime identified with period β in the imaginary time ... occurrence of singularities by the existence of incomplete geodesics that can not be extended to infinite values of the affine parameter. Definition of Singularity A spacetime is singular if it is timelike...

Ngày tải lên: 24/04/2014, 17:06

... 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 path 21 2.10.2 Event as an element of the space- time ... 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 space view 13 2.5 The relative time view 13 2.6 The relative space- time ... analysis and design 2 1.2 Spatio-temporal data in GIS 3 1.3 Time geography 5 1.4 The spatio-temporal data model 6 1.5 Aims of this research 7 1.6 Organisation of this book 7 2 Concepts of space and time...

Ngày tải lên: 08/08/2014, 00:23