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Spatial Memory and Spatial Orientation
2008Navigating through a remembered space depends critically on the ability to stay oriented with respect to the remembered environment and to reorient after becoming lost. This chapter describes the roles of long-term spatial memory, sensorimotor spatial memory, and path integration in determining spatial orientation.
Jonathan W. Kelly, Timothy P. McNamara
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IEEE Transactions on Vehicular Technology, 2008
Spatial modulation (SM) is a recently developed transmission technique that uses multiple antennas. The basic idea is to map a block of information bits to two information carrying units: 1) a symbol that was chosen from a constellation diagram and 2) a unique transmit antenna number that was chosen from a set of transmit antennas.
Raed Mesleh +4 more
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Spatial modulation (SM) is a recently developed transmission technique that uses multiple antennas. The basic idea is to map a block of information bits to two information carrying units: 1) a symbol that was chosen from a constellation diagram and 2) a unique transmit antenna number that was chosen from a set of transmit antennas.
Raed Mesleh +4 more
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Spatial Flows and Spatial Patterns
Environment and Planning A: Economy and Space, 1984The misspecification of gravity spatial interaction models has recently been described by the author. The bias in parameter estimates that results from such misspecification appears to produce the ‘map pattern effect’ or ‘spatial structure bias’ in estimated distance-decay parameters.
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Design of Spatial Constellation for Spatial Modulation
IEEE Wireless Communications Letters, 2020In order to achieve the transmission of more extra information bits, a new design, called spatial modulation with spatial constellation design (SM-SC), is proposed to extend the size of a spatial constellation diagram in spatial modulation (SM) system by designing the component formation of the transmitted spatial constellation vector (TSV).
Fuchun Huang, Yiju Zhan
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Spatial Externalities, Spatial Multipliers, And Spatial Econometrics
International Regional Science Review, 2003This article outlines a taxonomy of spatial econometric model specifications that incorporate spatial externalities in various ways. The point of departure is a reduced form in which local or global spillovers are expressed as spatial multipliers. From this, a range of familiar and less familiar specifications is derived for the structural form of a ...
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Spatial Embedding and Spatial Context
2009A serious issue in urban 2D remote sensing is that even if you can identify linear features it is often difficult to combine these to form the object you want - the building. The classical example is of trees overhanging walls and roofs: it is often difficult to join the linear pieces together.
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Spatial strategies for parallel spatial modelling
Geographical Information Systems, 1996Abstract Abstract. To achieve high levels of performance in parallel geoprocessing, the underlying spatial structure and relations of spatial models must be accounted for and exploited during decomposition into parallel processes. Spatial models are classified from two perspectives, the domain of modelling and the scope of operations, and a framework ...
Yuemin Ding, Paul J. Densham
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Spatial pattern and spatial autocorrelation
1995The spatial pattern of a distribution is defined by the arrangement of individual entities in space and the geographic relationships among them. The capability of evaluating spatial patterns is a prerequisite to understanding the complicated spatial processes underlying the distribution of a phenomenon.
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Applied Categorical Structures, 2002
The paper gives an appropriate notion of a prime element of a quantale and characterizes spatial quantales as those quantales having enough primes. This result solves a problem stated by \textit{J. W. Pelletier} and the reviewer [``Simple involutive quantales'', J. Algebra 195, 367-386 (1997; Zbl 0894.06005)].
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The paper gives an appropriate notion of a prime element of a quantale and characterizes spatial quantales as those quantales having enough primes. This result solves a problem stated by \textit{J. W. Pelletier} and the reviewer [``Simple involutive quantales'', J. Algebra 195, 367-386 (1997; Zbl 0894.06005)].
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Spatial attention systems in spatial neglect
Neuropsychologia, 2015It has been established that processes relating to 'spatial attention' are implemented at cortical level by goal-directed (top-down) and stimulus-driven (bottom-up) networks. Spatial neglect in brain-damaged individuals has been interpreted as a distinguished exemplar for a disturbance of these processes.
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